diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2002-04-30 21:08:42 +0000 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2002-04-30 21:08:42 +0000 |
| commit | 005b39c856917f060973f8d07c98d111b67d0a7f (patch) | |
| tree | 47f03e86ef15c8deebf35096f358adca27892850 | |
| parent | 9a633fa3b9b5c772daf4cbca89093bfcd387359b (diff) | |
| download | nasm-005b39c856917f060973f8d07c98d111b67d0a7f.tar.gz nasm-005b39c856917f060973f8d07c98d111b67d0a7f.tar.bz2 nasm-005b39c856917f060973f8d07c98d111b67d0a7f.zip | |
NASM 0.98.26
50 files changed, 1259 insertions, 6085 deletions
@@ -27,6 +27,7 @@ N: Frank Kotler E: fbkotler@nettaxi.com D: Bug smashing. D: Documentation - "KATMAI" and "3DNow!" instructions supported by 0.98 +D: General coordination and moral support. N: Stephen Silver E: nasm@argentum.freeserve.co.uk @@ -88,3 +89,8 @@ N: Edward J. Beroset E: beroset@mindspring.com D: added %substr and %strlen +N: Stanislav Karchebny, aka berkus, madfire, daemonhunter +E: madfire@users.sourceforge.net +D: multiple sections support for -fbin format +D: cvs maintenance +D: webpage at http://nasm.2y.net maintenance diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..13f7c28 --- /dev/null +++ b/ChangeLog @@ -0,0 +1,6 @@ + +2002-04-11 Stanislav Karchebny <berk@madfire.net> + + * Started ChangeLog instead of Changes. ChangeLog is better because all recent changes + are on top of the file, easy for inspection. + Old entries from doc/Changes will eventually be added here. diff --git a/Doxyfile b/Doxyfile deleted file mode 100644 index 1bb1cc3..0000000 --- a/Doxyfile +++ /dev/null @@ -1,752 +0,0 @@ -# Doxyfile 1.2.5 - -# This file describes the settings to be used by doxygen for a project -# -# All text after a hash (#) is considered a comment and will be ignored -# The format is: -# TAG = value [value, ...] -# For lists items can also be appended using: -# TAG += value [value, ...] -# Values that contain spaces should be placed between quotes (" ") - -#--------------------------------------------------------------------------- -# General configuration options -#--------------------------------------------------------------------------- - -# The PROJECT_NAME tag is a single word (or a sequence of words surrounded -# by quotes) that should identify the project. - -PROJECT_NAME = "NASM - the Netwide Assembler" - -# The PROJECT_NUMBER tag can be used to enter a project or revision number. -# This could be handy for archiving the generated documentation or -# if some version control system is used. - -PROJECT_NUMBER = 0.98 - -# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) -# base path where the generated documentation will be put. -# If a relative path is entered, it will be relative to the location -# where doxygen was started. If left blank the current directory will be used. - -OUTPUT_DIRECTORY = doxy - -# The OUTPUT_LANGUAGE tag is used to specify the language in which all -# documentation generated by doxygen is written. Doxygen will use this -# information to generate all constant output in the proper language. -# The default language is English, other supported languages are: -# Dutch, French, Italian, Czech, Swedish, German, Finnish, Japanese, -# Korean, Hungarian, Norwegian, Spanish, Romanian, Russian, Croatian, -# Polish, Portuguese and Slovene. - -OUTPUT_LANGUAGE = English - -# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in -# documentation are documented, even if no documentation was available. -# Private class members and static file members will be hidden unless -# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES - -EXTRACT_ALL = YES - -# If the EXTRACT_PRIVATE tag is set to YES all private members of a class -# will be included in the documentation. - -EXTRACT_PRIVATE = NO - -# If the EXTRACT_STATIC tag is set to YES all static members of a file -# will be included in the documentation. - -EXTRACT_STATIC = YES - -# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all -# undocumented members of documented classes, files or namespaces. -# If set to NO (the default) these members will be included in the -# various overviews, but no documentation section is generated. -# This option has no effect if EXTRACT_ALL is enabled. - -HIDE_UNDOC_MEMBERS = NO - -# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all -# undocumented classes that are normally visible in the class hierarchy. -# If set to NO (the default) these class will be included in the various -# overviews. This option has no effect if EXTRACT_ALL is enabled. - -HIDE_UNDOC_CLASSES = NO - -# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will -# include brief member descriptions after the members that are listed in -# the file and class documentation (similar to JavaDoc). -# Set to NO to disable this. - -BRIEF_MEMBER_DESC = YES - -# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend -# the brief description of a member or function before the detailed description. -# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the -# brief descriptions will be completely suppressed. - -REPEAT_BRIEF = YES - -# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then -# Doxygen will generate a detailed section even if there is only a brief -# description. - -ALWAYS_DETAILED_SEC = NO - -# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full -# path before files name in the file list and in the header files. If set -# to NO the shortest path that makes the file name unique will be used. - -FULL_PATH_NAMES = NO - -# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag -# can be used to strip a user defined part of the path. Stripping is -# only done if one of the specified strings matches the left-hand part of -# the path. It is allowed to use relative paths in the argument list. - -STRIP_FROM_PATH = - -# The INTERNAL_DOCS tag determines if documentation -# that is typed after a \internal command is included. If the tag is set -# to NO (the default) then the documentation will be excluded. -# Set it to YES to include the internal documentation. - -INTERNAL_DOCS = NO - -# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will -# generate a class diagram (in Html and LaTeX) for classes with base or -# super classes. Setting the tag to NO turns the diagrams off. - -CLASS_DIAGRAMS = YES - -# If the SOURCE_BROWSER tag is set to YES then a list of source files will -# be generated. Documented entities will be cross-referenced with these sources. - -SOURCE_BROWSER = YES - -# Setting the INLINE_SOURCES tag to YES will include the body -# of functions and classes directly in the documentation. - -INLINE_SOURCES = NO - -# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct -# doxygen to hide any special comment blocks from generated source code -# fragments. Normal C and C++ comments will always remain visible. - -STRIP_CODE_COMMENTS = YES - -# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate -# file names in lower case letters. If set to YES upper case letters are also -# allowed. This is useful if you have classes or files whose names only differ -# in case and if your file system supports case sensitive file names. Windows -# users are adviced to set this option to NO. - -CASE_SENSE_NAMES = YES - -# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen -# will show members with their full class and namespace scopes in the -# documentation. If set to YES the scope will be hidden. - -HIDE_SCOPE_NAMES = NO - -# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen -# will generate a verbatim copy of the header file for each class for -# which an include is specified. Set to NO to disable this. - -VERBATIM_HEADERS = YES - -# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen -# will put list of the files that are included by a file in the documentation -# of that file. - -SHOW_INCLUDE_FILES = YES - -# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen -# will interpret the first line (until the first dot) of a JavaDoc-style -# comment as the brief description. If set to NO, the JavaDoc -# comments will behave just like the Qt-style comments (thus requiring an -# explict @brief command for a brief description. - -JAVADOC_AUTOBRIEF = NO - -# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented -# member inherits the documentation from any documented member that it -# reimplements. - -INHERIT_DOCS = YES - -# If the INLINE_INFO tag is set to YES (the default) then a tag [inline] -# is inserted in the documentation for inline members. - -INLINE_INFO = YES - -# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen -# will sort the (detailed) documentation of file and class members -# alphabetically by member name. If set to NO the members will appear in -# declaration order. - -SORT_MEMBER_DOCS = YES - -# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC -# tag is set to YES, then doxygen will reuse the documentation of the first -# member in the group (if any) for the other members of the group. By default -# all members of a group must be documented explicitly. - -DISTRIBUTE_GROUP_DOC = NO - -# The TAB_SIZE tag can be used to set the number of spaces in a tab. -# Doxygen uses this value to replace tabs by spaces in code fragments. - -TAB_SIZE = 4 - -# The ENABLE_SECTIONS tag can be used to enable conditional -# documentation sections, marked by \if sectionname ... \endif. - -ENABLED_SECTIONS = - -# The GENERATE_TODOLIST tag can be used to enable (YES) or -# disable (NO) the todo list. This list is created by putting \todo -# commands in the documentation. - -GENERATE_TODOLIST = YES - -# The GENERATE_TESTLIST tag can be used to enable (YES) or -# disable (NO) the test list. This list is created by putting \test -# commands in the documentation. - -GENERATE_TESTLIST = YES - -# This tag can be used to specify a number of aliases that acts -# as commands in the documentation. An alias has the form "name=value". -# For example adding "sideeffect=\par Side Effects:\n" will allow you to -# put the command \sideeffect (or @sideeffect) in the documentation, which -# will result in a user defined paragraph with heading "Side Effects:". -# You can put \n's in the value part of an alias to insert newlines. - -ALIASES = - -# The MAX_INITIALIZER_LINES tag determines the maximum number of lines -# the initial value of a variable or define consist of for it to appear in -# the documentation. If the initializer consists of more lines than specified -# here it will be hidden. Use a value of 0 to hide initializers completely. -# The appearance of the initializer of individual variables and defines in the -# documentation can be controlled using \showinitializer or \hideinitializer -# command in the documentation regardless of this setting. - -MAX_INITIALIZER_LINES = 30 - -# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources -# only. Doxygen will then generate output that is more tailored for C. -# For instance some of the names that are used will be different. The list -# of all members will be omitted, etc. - -OPTIMIZE_OUTPUT_FOR_C = NO - -#--------------------------------------------------------------------------- -# configuration options related to warning and progress messages -#--------------------------------------------------------------------------- - -# The QUIET tag can be used to turn on/off the messages that are generated -# by doxygen. Possible values are YES and NO. If left blank NO is used. - -QUIET = NO - -# The WARNINGS tag can be used to turn on/off the warning messages that are -# generated by doxygen. Possible values are YES and NO. If left blank -# NO is used. - -WARNINGS = YES - -# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings -# for undocumented members. If EXTRACT_ALL is set to YES then this flag will -# automatically be disabled. - -WARN_IF_UNDOCUMENTED = YES - -# The WARN_FORMAT tag determines the format of the warning messages that -# doxygen can produce. The string should contain the $file, $line, and $text -# tags, which will be replaced by the file and line number from which the -# warning originated and the warning text. - -WARN_FORMAT = "$file:$line: $text" - -# The WARN_LOGFILE tag can be used to specify a file to which warning -# and error messages should be written. If left blank the output is written -# to stderr. - -WARN_LOGFILE = - -#--------------------------------------------------------------------------- -# configuration options related to the input files -#--------------------------------------------------------------------------- - -# The INPUT tag can be used to specify the files and/or directories that contain -# documented source files. You may enter file names like "myfile.cpp" or -# directories like "/usr/src/myproject". Separate the files or directories -# with spaces. - -INPUT = . - -# If the value of the INPUT tag contains directories, you can use the -# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp -# and *.h) to filter out the source-files in the directories. If left -# blank all files are included. - -FILE_PATTERNS = *.c *.h - -# The RECURSIVE tag can be used to turn specify whether or not subdirectories -# should be searched for input files as well. Possible values are YES and NO. -# If left blank NO is used. - -RECURSIVE = NO - -# The EXCLUDE tag can be used to specify files and/or directories that should -# excluded from the INPUT source files. This way you can easily exclude a -# subdirectory from a directory tree whose root is specified with the INPUT tag. - -EXCLUDE = - -# If the value of the INPUT tag contains directories, you can use the -# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude -# certain files from those directories. - -EXCLUDE_PATTERNS = - -# The EXAMPLE_PATH tag can be used to specify one or more files or -# directories that contain example code fragments that are included (see -# the \include command). - -EXAMPLE_PATH = - -# If the value of the EXAMPLE_PATH tag contains directories, you can use the -# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp -# and *.h) to filter out the source-files in the directories. If left -# blank all files are included. - -EXAMPLE_PATTERNS = - -# The IMAGE_PATH tag can be used to specify one or more files or -# directories that contain image that are included in the documentation (see -# the \image command). - -IMAGE_PATH = - -# The INPUT_FILTER tag can be used to specify a program that doxygen should -# invoke to filter for each input file. Doxygen will invoke the filter program -# by executing (via popen()) the command <filter> <input-file>, where <filter> -# is the value of the INPUT_FILTER tag, and <input-file> is the name of an -# input file. Doxygen will then use the output that the filter program writes -# to standard output. - -INPUT_FILTER = - -# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using -# INPUT_FILTER) will be used to filter the input files when producing source -# files to browse. - -FILTER_SOURCE_FILES = NO - -#--------------------------------------------------------------------------- -# configuration options related to the alphabetical class index -#--------------------------------------------------------------------------- - -# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index -# of all compounds will be generated. Enable this if the project -# contains a lot of classes, structs, unions or interfaces. - -ALPHABETICAL_INDEX = NO - -# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then -# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns -# in which this list will be split (can be a number in the range [1..20]) - -COLS_IN_ALPHA_INDEX = 5 - -# In case all classes in a project start with a common prefix, all -# classes will be put under the same header in the alphabetical index. -# The IGNORE_PREFIX tag can be used to specify one or more prefixes that -# should be ignored while generating the index headers. - -IGNORE_PREFIX = - -#--------------------------------------------------------------------------- -# configuration options related to the HTML output -#--------------------------------------------------------------------------- - -# If the GENERATE_HTML tag is set to YES (the default) Doxygen will -# generate HTML output. - -GENERATE_HTML = YES - -# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. -# If a relative path is entered the value of OUTPUT_DIRECTORY will be -# put in front of it. If left blank `html' will be used as the default path. - -HTML_OUTPUT = html - -# The HTML_HEADER tag can be used to specify a personal HTML header for -# each generated HTML page. If it is left blank doxygen will generate a -# standard header. - -HTML_HEADER = - -# The HTML_FOOTER tag can be used to specify a personal HTML footer for -# each generated HTML page. If it is left blank doxygen will generate a -# standard footer. - -HTML_FOOTER = - -# The HTML_STYLESHEET tag can be used to specify a user defined cascading -# style sheet that is used by each HTML page. It can be used to -# fine-tune the look of the HTML output. If the tag is left blank doxygen -# will generate a default style sheet - -HTML_STYLESHEET = - -# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes, -# files or namespaces will be aligned in HTML using tables. If set to -# NO a bullet list will be used. - -HTML_ALIGN_MEMBERS = YES - -# If the GENERATE_HTMLHELP tag is set to YES, additional index files -# will be generated that can be used as input for tools like the -# Microsoft HTML help workshop to generate a compressed HTML help file (.chm) -# of the generated HTML documentation. - -GENERATE_HTMLHELP = NO - -# The DISABLE_INDEX tag can be used to turn on/off the condensed index at -# top of each HTML page. The value NO (the default) enables the index and -# the value YES disables it. - -DISABLE_INDEX = NO - -# This tag can be used to set the number of enum values (range [1..20]) -# that doxygen will group on one line in the generated HTML documentation. - -ENUM_VALUES_PER_LINE = 4 - -# If the GENERATE_TREEVIEW tag is set to YES, a side panel will be -# generated containing a tree-like index structure (just like the one that -# is generated for HTML Help). For this to work a browser that supports -# JavaScript and frames is required (for instance Netscape 4.0+ -# or Internet explorer 4.0+). - -GENERATE_TREEVIEW = YES - -# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be -# used to set the initial width (in pixels) of the frame in which the tree -# is shown. - -TREEVIEW_WIDTH = 250 - -#--------------------------------------------------------------------------- -# configuration options related to the LaTeX output -#--------------------------------------------------------------------------- - -# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will -# generate Latex output. - -GENERATE_LATEX = YES - -# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. -# If a relative path is entered the value of OUTPUT_DIRECTORY will be -# put in front of it. If left blank `latex' will be used as the default path. - -LATEX_OUTPUT = latex - -# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact -# LaTeX documents. This may be useful for small projects and may help to -# save some trees in general. - -COMPACT_LATEX = NO - -# The PAPER_TYPE tag can be used to set the paper type that is used -# by the printer. Possible values are: a4, a4wide, letter, legal and -# executive. If left blank a4wide will be used. - -PAPER_TYPE = a4wide - -# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX -# packages that should be included in the LaTeX output. - -EXTRA_PACKAGES = - -# The LATEX_HEADER tag can be used to specify a personal LaTeX header for -# the generated latex document. The header should contain everything until -# the first chapter. If it is left blank doxygen will generate a -# standard header. Notice: only use this tag if you know what you are doing! - -LATEX_HEADER = - -# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated -# is prepared for conversion to pdf (using ps2pdf). The pdf file will -# contain links (just like the HTML output) instead of page references -# This makes the output suitable for online browsing using a pdf viewer. - -PDF_HYPERLINKS = NO - -# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of -# plain latex in the generated Makefile. Set this option to YES to get a -# higher quality PDF documentation. - -USE_PDFLATEX = NO - -# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. -# command to the generated LaTeX files. This will instruct LaTeX to keep -# running if errors occur, instead of asking the user for help. -# This option is also used when generating formulas in HTML. - -LATEX_BATCHMODE = NO - -#--------------------------------------------------------------------------- -# configuration options related to the RTF output -#--------------------------------------------------------------------------- - -# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output -# The RTF output is optimised for Word 97 and may not look very pretty with -# other RTF readers or editors. - -GENERATE_RTF = YES - -# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. -# If a relative path is entered the value of OUTPUT_DIRECTORY will be -# put in front of it. If left blank `rtf' will be used as the default path. - -RTF_OUTPUT = rtf - -# If the COMPACT_RTF tag is set to YES Doxygen generates more compact -# RTF documents. This may be useful for small projects and may help to -# save some trees in general. - -COMPACT_RTF = NO - -# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated -# will contain hyperlink fields. The RTF file will -# contain links (just like the HTML output) instead of page references. -# This makes the output suitable for online browsing using a WORD or other. -# programs which support those fields. -# Note: wordpad (write) and others do not support links. - -RTF_HYPERLINKS = NO - -# Load stylesheet definitions from file. Syntax is similar to doxygen's -# config file, i.e. a series of assigments. You only have to provide -# replacements, missing definitions are set to their default value. - -RTF_STYLESHEET_FILE = - -#--------------------------------------------------------------------------- -# configuration options related to the man page output -#--------------------------------------------------------------------------- - -# If the GENERATE_MAN tag is set to YES (the default) Doxygen will -# generate man pages - -GENERATE_MAN = YES - -# The MAN_OUTPUT tag is used to specify where the man pages will be put. -# If a relative path is entered the value of OUTPUT_DIRECTORY will be -# put in front of it. If left blank `man' will be used as the default path. - -MAN_OUTPUT = man - -# The MAN_EXTENSION tag determines the extension that is added to -# the generated man pages (default is the subroutine's section .3) - -MAN_EXTENSION = .3 - -#--------------------------------------------------------------------------- -# Configuration options related to the preprocessor -#--------------------------------------------------------------------------- - -# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will -# evaluate all C-preprocessor directives found in the sources and include -# files. - -ENABLE_PREPROCESSING = YES - -# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro -# names in the source code. If set to NO (the default) only conditional -# compilation will be performed. Macro expansion can be done in a controlled -# way by setting EXPAND_ONLY_PREDEF to YES. - -MACRO_EXPANSION = NO - -# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES -# then the macro expansion is limited to the macros specified with the -# PREDEFINED and EXPAND_AS_PREDEFINED tags. - -EXPAND_ONLY_PREDEF = NO - -# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files -# in the INCLUDE_PATH (see below) will be search if a #include is found. - -SEARCH_INCLUDES = YES - -# The INCLUDE_PATH tag can be used to specify one or more directories that -# contain include files that are not input files but should be processed by -# the preprocessor. - -INCLUDE_PATH = - -# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard -# patterns (like *.h and *.hpp) to filter out the header-files in the -# directories. If left blank, the patterns specified with FILE_PATTERNS will -# be used. - -INCLUDE_FILE_PATTERNS = - -# The PREDEFINED tag can be used to specify one or more macro names that -# are defined before the preprocessor is started (similar to the -D option of -# gcc). The argument of the tag is a list of macros of the form: name -# or name=definition (no spaces). If the definition and the = are -# omitted =1 is assumed. - -PREDEFINED = - -# If the MACRO_EXPANSION and EXPAND_PREDEF_ONLY tags are set to YES then -# this tag can be used to specify a list of macro names that should be expanded. -# The macro definition that is found in the sources will be used. -# Use the PREDEFINED tag if you want to use a different macro definition. - -EXPAND_AS_DEFINED = - -#--------------------------------------------------------------------------- -# Configuration::addtions related to external references -#--------------------------------------------------------------------------- - -# The TAGFILES tag can be used to specify one or more tagfiles. - -TAGFILES = - -# When a file name is specified after GENERATE_TAGFILE, doxygen will create -# a tag file that is based on the input files it reads. - -GENERATE_TAGFILE = - -# If the ALLEXTERNALS tag is set to YES all external classes will be listed -# in the class index. If set to NO only the inherited external classes -# will be listed. - -ALLEXTERNALS = NO - -# The PERL_PATH should be the absolute path and name of the perl script -# interpreter (i.e. the result of `which perl'). - -PERL_PATH = /usr/bin/perl - -#--------------------------------------------------------------------------- -# Configuration options related to the dot tool -#--------------------------------------------------------------------------- - -# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is -# available from the path. This tool is part of Graphviz, a graph visualization -# toolkit from AT&T and Lucent Bell Labs. The other options in this section -# have no effect if this option is set to NO (the default) - -HAVE_DOT = NO - -# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen -# will generate a graph for each documented class showing the direct and -# indirect inheritance relations. Setting this tag to YES will force the -# the CLASS_DIAGRAMS tag to NO. - -CLASS_GRAPH = YES - -# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen -# will generate a graph for each documented class showing the direct and -# indirect implementation dependencies (inheritance, containment, and -# class references variables) of the class with other documented classes. - -COLLABORATION_GRAPH = YES - -# If the ENABLE_PREPROCESSING, INCLUDE_GRAPH, and HAVE_DOT tags are set to -# YES then doxygen will generate a graph for each documented file showing -# the direct and indirect include dependencies of the file with other -# documented files. - -INCLUDE_GRAPH = YES - -# If the ENABLE_PREPROCESSING, INCLUDED_BY_GRAPH, and HAVE_DOT tags are set to -# YES then doxygen will generate a graph for each documented header file showing -# the documented files that directly or indirectly include this file - -INCLUDED_BY_GRAPH = YES - -# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen -# will graphical hierarchy of all classes instead of a textual one. - -GRAPHICAL_HIERARCHY = YES - -# The tag DOT_PATH can be used to specify the path where the dot tool can be -# found. If left blank, it is assumed the dot tool can be found on the path. - -DOT_PATH = - -# The MAX_DOT_GRAPH_WIDTH tag can be used to set the maximum allowed width -# (in pixels) of the graphs generated by dot. If a graph becomes larger than -# this value, doxygen will try to truncate the graph, so that it fits within -# the specified constraint. Beware that most browsers cannot cope with very -# large images. - -MAX_DOT_GRAPH_WIDTH = 1024 - -# The MAX_DOT_GRAPH_HEIGHT tag can be used to set the maximum allows height -# (in pixels) of the graphs generated by dot. If a graph becomes larger than -# this value, doxygen will try to truncate the graph, so that it fits within -# the specified constraint. Beware that most browsers cannot cope with very -# large images. - -MAX_DOT_GRAPH_HEIGHT = 1024 - -# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will -# generate a legend page explaining the meaning of the various boxes and -# arrows in the dot generated graphs. - -GENERATE_LEGEND = YES - -#--------------------------------------------------------------------------- -# Configuration::addtions related to the search engine -#--------------------------------------------------------------------------- - -# The SEARCHENGINE tag specifies whether or not a search engine should be -# used. If set to NO the values of all tags below this one will be ignored. - -SEARCHENGINE = NO - -# The CGI_NAME tag should be the name of the CGI script that -# starts the search engine (doxysearch) with the correct parameters. -# A script with this name will be generated by doxygen. - -CGI_NAME = search.cgi - -# The CGI_URL tag should be the absolute URL to the directory where the -# cgi binaries are located. See the documentation of your http daemon for -# details. - -CGI_URL = - -# The DOC_URL tag should be the absolute URL to the directory where the -# documentation is located. If left blank the absolute path to the -# documentation, with file:// prepended to it, will be used. - -DOC_URL = - -# The DOC_ABSPATH tag should be the absolute path to the directory where the -# documentation is located. If left blank the directory on the local machine -# will be used. - -DOC_ABSPATH = - -# The BIN_ABSPATH tag must point to the directory where the doxysearch binary -# is installed. - -BIN_ABSPATH = /usr/local/bin/ - -# The EXT_DOC_PATHS tag can be used to specify one or more paths to -# documentation generated for other projects. This allows doxysearch to search -# the documentation for these projects as well. - -EXT_DOC_PATHS = diff --git a/Mkfiles/README b/Mkfiles/README new file mode 100644 index 0000000..7e68499 --- /dev/null +++ b/Mkfiles/README @@ -0,0 +1,4 @@ +These are pre-created Makefiles for various platforms, use them if +GNU autoconf/automake packages are not supported on your system. + +Copy appropriate Makefile to ../Makefile and run make. @@ -0,0 +1,27 @@ + NASM, the Netwide Assembler. + Version 0.98.26. + +Many many developers all over the net respect NASM for what it is +- a widespread (thus netwide), portable (thus netwide!), very +flexible and mature assembler tool with support for many output +formats (thus netwide!!). + +Now we have good news for you: NASM is licensed under LGPL. +This means its development is open to even wider society of +programmers wishing to improve their lovely assembler. + +The NASM project is now situated at SourceForge.net, the most +famous Open Source development center on The Net. + +Visit our development page at http://nasm.2y.net and our +SF project at http://sf.net/projects/nasm + +The NASM documentation is in process of severe re-arrangement +(especially the License issues with sourcecode, the old +license can be found in doc/License), all files from previous +releases that didn't go thru the process yet are placed in doc/ +subdirectory. Look there if you don't find a file you need here. + + + With best regards, + NASM crew. diff --git a/README.1st b/README.1st deleted file mode 100644 index aa9557b..0000000 --- a/README.1st +++ /dev/null @@ -1,100 +0,0 @@ -PROLOGUE - -One day someone wrote that nasm needs: - -> - A good ALIGN mechanism, similar to GAS's. GAS pads out space by -> means of the following (32-bit) instructions: -> 8DB42600000000 lea esi,[esi+0x0] -> 8DB600000000 lea esi,[esi+0x0] -> 8D742600 lea esi,[esi+0x0] -> 8D7600 lea esi,[esi+0x0] -> 8D36 lea esi,[esi] -> 90 nop -> It uses up to two of these instructions to do up to 14-byte pads; -> when more than 14 bytes are needed, it issues a (short) jump to -> the end of the padded section and then NOPs the rest. Come up with -> a similar scheme for 16 bit mode, and also come up with a way to -> use it - internal to the assembler, so that programs using ALIGN -> don't knock over preprocess-only mode. -> Also re-work the macro form so that when given one argument in a -> code section it calls this feature. - -Well palign is your friend. - - - This is a modified version of nasm-0.98.24 that can accept -two new directives.The two new directives that control -the align mechanism are 'palign' and 'p2align'.They are nasm directives -that don't depend on preprocessor but rather align the code while assembling -in a gas-like style. - The syntax of these directives is - -[palign n] where '0 <= n <= 6' and -[p2align n] where '0 <= n <=6' - - The use of these directives is - -[palign n] - - Pad the location counter to a particular storage boundary. -The n is a number between 0 and 6 of low-order zero bits the location counter -must have after advancement. -For example `palign 3' advances the location counter until -it a multiple of 8.If the location counter is already a multiple of 8, -no change is needed. -If n=0 then nothing is done -if n => 6 then palign advances the location counter until it a multiple -of 64.For now the maximum is 64 bytes,if you want more use the ALIGN macro. - -[p2align n] - - This directive do almost the same thing with a little exception. -It will continue aligning until a directive [p2align 0] meet or until -the current section changes.So this piece of code - - BITS 32 - SECTION .text - [p2align 5] - - ;some code here - - - SECTION .data - - ;some data here - -guarantee that all the instructions in the code segment will be aligned -in a 32 byte boundary so than no instruction break the cache line on a -pentium processor. - -BUGS - -Well my english are very very bad. -This optimization will not work -for now for 16-bit code. -Also there may be a problem with the prefixes like ds,es,rep,lock etc - -so this code will work - - 'rep movsd' - -but this may not work - - 'rep' - 'movsd' - -if you want to be sure put the prefix in the same line -with the instruction. - -Also don't try this in a data or a bss segment.Use the ALIGN macro better - -FEEDBACK - -If you have any suggestion, comment or found a bug please email me -and i will try to reply immediately. -From your feedback it depends this project to get better as i intend -to implement more things and improve the code in the next version of nasm. - -AUTHOR -Panos Minos 03-04-2002 -email: <panosminos@mycosmos.gr> , <panosminos1@mycosmos.gr> diff --git a/README03.txt b/README03.txt deleted file mode 100644 index 8d35390..0000000 --- a/README03.txt +++ /dev/null @@ -1,49 +0,0 @@ - - README - NASM, the Netwide Assembler - - - Changes from 0.98 release to 98.03 as of 27-Jul-2000 - ==================================================== - -1. Added signed byte optimizations for the 0x81/0x83 class -of instructions: ADC, ADD, AND, CMP, OR, SBB, SUB, XOR: -when used as 'ADD reg16,imm' or 'ADD reg32,imm.' Also -optimization of signed byte form of 'PUSH imm' and 'IMUL -reg,imm'/'IMUL reg,reg,imm.' No size specification is needed. - -2. Added multi-pass JMP and Jcc offset optimization. Offsets -on forward references will preferentially use the short form, -without the need to code a specific size (short or near) for -the branch. Added instructions for 'Jcc label' to use the -form 'Jnotcc $+3/JMP label', in cases where a short offset -is out of bounds. If compiling for a 386 or higher CPU, then -the 386 form of Jcc will be used instead. - -This feature is controlled by a new command-line switch: "O", -(upper case letter O). "-O0" reverts the assembler to no -extra optimization passes, "-O1" allows up to 5 extra passes, -and "-O2"(default), allows up to 10 extra optimization passes. - -3. Added a new directive: 'cpu XXX', where XXX is any of: -8086, 186, 286, 386, 486, 586, pentium, 686, PPro, P2, P3 or -Katmai. All are case insensitive. All instructions will -be selected only if they apply to the selected cpu or lower. -Corrected a couple of bugs in cpu-dependence in 'insns.dat'. - -4. Added to 'standard.mac', the "use16" and "use32" forms of -the "bits 16/32" directive. This is nothing new, just conforms -to a lot of other assemblers. (minor) - -5. Changed label allocation from 320/32 (10000 labels @ 200K+) -to 32/37 (1000 labels); makes running under DOS much easier. -Since additional label space is allocated dynamically, this -should have no effect on large programs with lots of labels. -The 37 is a prime, believed to be better for hashing. (minor) - -6. Integrated patchfile 0.98-0.98.01. I call this version -0.98.03, for historical reasons: 0.98.02 was trashed. - ---John Coffman <johninsd@san.rr.com> 27-Jul-2000 - -(end)
\ No newline at end of file diff --git a/README09b.txt b/README09b.txt deleted file mode 100644 index affb91a..0000000 --- a/README09b.txt +++ /dev/null @@ -1,82 +0,0 @@ - - README - NASM, the Netwide Assembler - - - Changes from 0.98.07 release to 98.09b as of 28-Oct-2001 - ======================================================== - -1. More closely compatible with 0.98 when -O0 is implied -or specified. Not strictly identical, since backward -branches in range of short offsets are recognized, and signed -byte values with no explicit size specification will be -assembled as a single byte. - -2. More forgiving with the PUSH instruction. 0.98 requires -a size to be specified always. 0.98.09b will imply the size -from the current BITS setting (16 or 32). - -3. Changed definition of the optimization flag: - - -O0 strict two-pass assembly, JMP and Jcc are - handled more like 0.98, except that back- - ward JMPs are short, if possible. - - -O1 strict two-pass assembly, but forward - branches are assembled with code guaranteed - to reach; may produce larger code than - -O0, but will produce successful assembly - more often if branch offset sizes are not - specified. - - -O2 multi-pass optimization, minimize branch - offsets; also will minimize signed immed- - iate bytes, overriding size specification. - - -O3 like -O2, but more passes taken, if needed - - - Changes from 0.98 release to 98.03 as of 27-Jul-2000 - ==================================================== - -1. Added signed byte optimizations for the 0x81/0x83 class -of instructions: ADC, ADD, AND, CMP, OR, SBB, SUB, XOR: -when used as 'ADD reg16,imm' or 'ADD reg32,imm.' Also -optimization of signed byte form of 'PUSH imm' and 'IMUL -reg,imm'/'IMUL reg,reg,imm.' No size specification is needed. - -2. Added multi-pass JMP and Jcc offset optimization. Offsets -on forward references will preferentially use the short form, -without the need to code a specific size (short or near) for -the branch. Added instructions for 'Jcc label' to use the -form 'Jnotcc $+3/JMP label', in cases where a short offset -is out of bounds. If compiling for a 386 or higher CPU, then -the 386 form of Jcc will be used instead. - -This feature is controlled by a new command-line switch: "O", -(upper case letter O). "-O0" reverts the assembler to no -extra optimization passes, "-O1" allows up to 5 extra passes, -and "-O2"(default), allows up to 10 extra optimization passes. - -3. Added a new directive: 'cpu XXX', where XXX is any of: -8086, 186, 286, 386, 486, 586, pentium, 686, PPro, P2, P3 or -Katmai. All are case insensitive. All instructions will -be selected only if they apply to the selected cpu or lower. -Corrected a couple of bugs in cpu-dependence in 'insns.dat'. - -4. Added to 'standard.mac', the "use16" and "use32" forms of -the "bits 16/32" directive. This is nothing new, just conforms -to a lot of other assemblers. (minor) - -5. Changed label allocation from 320/32 (10000 labels @ 200K+) -to 32/37 (1000 labels); makes running under DOS much easier. -Since additional label space is allocated dynamically, this -should have no effect on large programs with lots of labels. -The 37 is a prime, believed to be better for hashing. (minor) - -6. Integrated patchfile 0.98-0.98.01. I call this version -0.98.03, for historical reasons: 0.98.02 was trashed. - ---John Coffman <johninsd@san.rr.com> 27-Jul-2000 - -(end)
\ No newline at end of file @@ -0,0 +1,8 @@ +Things to do (incorporate with doc/Wishlist): + +1. i18n via gettext +2. Convert shallow code model to deep code model. Tired of messing between +lots of unrelated files (especially .c/.h stuff). +3. Automated dependency generation for Makefile. Current looks awful and will break +if anything changes. +4. (as result of 2) Move output modules out*.c to output/ subdir. (?) diff --git a/c16.mac b/c16.mac deleted file mode 100644 index 50b5d5e..0000000 --- a/c16.mac +++ /dev/null @@ -1,82 +0,0 @@ -; NASM macro set to make interfacing to 16-bit programs easier -*- nasm -*- - - - -%imacro proc 1 ; begin a procedure definition - -%push proc - - global %1 - -%1: push bp - - mov bp,sp - -%ifdef FARCODE PASCAL ; arguments may start at bp+4 or bp+6 - -%assign %$arg 6 - -%define %$firstarg 6 - -%else - -%assign %$arg 4 - -%define %$firstarg 4 - -%endif - -%define %$procname %1 - -%endmacro - - - -%imacro arg 0-1 2 ; used with the argument name as a label - -%00 equ %$arg - - ; we could possibly be adding some - - ; debug information at this point...? - -%assign %$arg %1+%$arg - -%endmacro - - - -%imacro endproc 0 - -%ifnctx proc - -%error Mismatched `endproc'/`proc' - -%else - - mov sp,bp - - pop bp - -%ifdef PASCAL - - retf %$arg - %$firstarg - -%elifdef FARCODE - - retf - -%else - - retn - -%endif - -__end_%$procname: ; useful for calculating function size - -%pop - -%endif - -%endmacro - diff --git a/c32.mac b/c32.mac deleted file mode 100644 index f0c116b..0000000 --- a/c32.mac +++ /dev/null @@ -1,52 +0,0 @@ -; NASM macro set to make interfacing to 32-bit programs easier -*- nasm -*- - - - -%imacro proc 1 ; begin a procedure definition - -%push proc - - global %1 - -%1: push ebp - - mov ebp,esp - -%assign %$arg 8 - -%define %$procname %1 - -%endmacro - - - -%imacro arg 0-1 4 ; used with the argument name as a label - -%00 equ %$arg - -%assign %$arg %1+%$arg - -%endmacro - - - -%imacro endproc 0 - -%ifnctx proc - -%error Mismatched `endproc'/`proc' - -%else - - leave - - ret - -__end_%$procname: ; useful for calculating function size - -%pop - -%endif - -%endmacro - diff --git a/changed.asm b/changed.asm deleted file mode 100644 index 29818d1..0000000 --- a/changed.asm +++ /dev/null @@ -1,383 +0,0 @@ -;This file demonstrates many of the differences between NASM version X and NASM -;version 0.97 -; -; changed.asm is copyright (C) 1998 John S. Fine -; -; It may be redistributed under the same conditions as NASM as described in -; Licence file in the NASM archive -;_________________________________ -; -; nasm changed.asm -l changed.lst -; -; When assembled without any -d switches, it includes examples which: -; Work correctly in version X -; and Work incorrectly and/or display warnings in version 0.97 -; and Do not prevent the generation of output in version 0.97 -; -; Not all the differences can be seen in the .lst file. I suggest that you use -; "ndisasm changes" to examine the code actually generated. -;_________________________________ -; -; nasm changed.asm -l changed.lst -doldmsg -; -; When assembled with -doldmsg, it adds examples which: -; Work correctly in version X -; and Generate error messages in version 0.97 and do not generate output -;_________________________________ -; -; nasm changed.asm -l changed.lst -doldcrash -; -; When assembled with -doldcrash, it adds examples which: -; Work correctly in version X -; and Cause NASM to crash in version 0.97 -;_________________________________ -; -; nasm changed.asm -l changed.lst -dnewmsg -; -; When assembled with -dnewmsg, it adds examples which: -; Generate error messages in version X -; and Generate wrong output without warning or error message in version 0.97 -;----------------------------------------------------------------------------- - -; Please note that I have reported the name of the person who made the -; correction based on very limited information. In several cases, I am sure I -; will identify the wrong author. Please send me any corrections; I don't -; intend to insult or exclude anyone. - -;----------------------------------------------------------------------------- -; Bug fixed by Simon in assemble() -; -; The following generated "call next" / "call next-1" instead of -; two copies of "call next" -; - times 2 a16 call next -next: - -;----------------------------------------------------------------------------- -; Bug fixed by John in parse_line() (and other routines) -; -; This used to jmp to prior.1, when it should be here.1 -; -prior: -.1: -here: jmp .1 -.1: - -;----------------------------------------------------------------------------- -; Bug fixed by John in assemble() -; -; Strings used in dq and dt were not zero filled correctly -; - dq 'b' - - -;----------------------------------------------------------------------------- -; Bug fixed by Simon in isn_names[] -; -; Was not recognised as an instruction -; - int01 ; Instead of INT1 - -;----------------------------------------------------------------------------- -; Bug fixed by Jim Hague in ??? -; -; Forward references were instruction level rather than per operand -; - shr word [forwardref],1 -forwardref: - -;----------------------------------------------------------------------------- -; Bug fixed by John in preproc.c -; -; It used to silently discard id characters appended to a multi-line -; macro parameter (such as the x in %1x below). -; -%macro xxx 1 -%1: nop -%{1}x: jmp %1x -%endmacro -xxx yyy - -;----------------------------------------------------------------------------- -; Bug added by John in preproc.c 0.98-J4, removed by John in 0.98-J5 -; -; Tested here to make sure it stays removed -; -%macro TestElse 1 -%if %1=0 -%elif %1=1 -nop -%endif -%endmacro -TestElse 1 - -%ifdef oldmsg -;*************************************************************** -; -; The following examples will generate error messages in 0.97 and will generate -; correct output in the new version. - -;----------------------------------------------------------------------------- -; Bug fixed by Simon in isns.dat -; -; The optional "near" was not permitted on JMP and CALL -; - jmp near here - -;----------------------------------------------------------------------------- -; Feature added by Simon in stdscan() -; -; You can now use the numeric value of strings in %assign -; -%assign xxx 'ABCD' - dd xxx - -;----------------------------------------------------------------------------- -; Feature added by John in add_vectors() -; -; Stranger address expressions are now supported as long as they resolve to -; something valid. -; - mov ax, [eax + ebx + ecx - eax] - -;----------------------------------------------------------------------------- -; Bug fixed by Simon in ??? -; -; The EQU directive affected local labels in a way that was inconsistent -; between passes -; -.local: -neither equ $ - jmp .local - -;----------------------------------------------------------------------------- -; Feature added by Jules in parse_line -; -; You can override a size specifier -; -%define arg1 dword [bp+4] - cmp word arg1, 2 - -;----------------------------------------------------------------------------- -; Bug fixed by John in preproc.c -; -; You could not use a label on the same line with a macro invocation, if the -; macro definition began with a preprocessor directive. -; - struc mytype -.long resd 1 - endstruc - -lbl istruc mytype - at mytype.long, dd 'ABCD' - iend - -;----------------------------------------------------------------------------- -; Warning removed by John in preproc.c -; -; In order to allow macros that extend the definition of instructions, I -; disabled the warning on a multi-line macro referencing itself. -; -%endif ;NASM 0.97 doesn't handle %0 etc. inside false %if -%macro push 1-* ; -%rep %0 ; -push %1 ; -%rotate 1 ; -%endrep ; -%endmacro ; -%ifdef oldmsg ; - - push ax,bx - -;----------------------------------------------------------------------------- -; Warning removed by John in preproc.c -; -; To support other types of macros that extend the definition of instructions, -; I disabled the warning on a multi-line macro called with the wrong number of -; parameters. PUSH and POP can be extended equally well by either method, but -; other intruction extensions may need one method or the other, so I made both -; work. -; -; Note that neither of these warnings was really needed, because a later stage -; of NASM would almost always give an adequate error message if the macro use -; really was wrong. -; -%endif -%macro pop 2-* -%rep %0 -pop %1 -%rotate 1 -%endrep -%endmacro -%ifdef oldmsg - - pop ax,bx -%endif - - -%ifdef newmsg ;*************************************************************** - -;----------------------------------------------------------------------------- -; Bug fixed by John in parse_line() (and other routines) -; -; This invalid code used to assemble without errors -; -myself equ myself+1 - jmp myself - -;----------------------------------------------------------------------------- -; Change made by John in preproc.c -; -; In 0.97, an id that appears as a label on a macro invocation was always -; prepended to the first line of the macro expansion. That caused several -; bugs, but also could be used in tricks like the arg macro in c16.mac and -; c32.mac. -; -; In version X, an id that appears as a label on a macro invocation will -; normally be defined as a label for the address at which the macro is -; invoked, regardless of whether the first line of the macro expansion is -; something that can take a label. The new token %00 may be used for any -; of the situations in which the old prepend behavior was doing something -; tricky but useful. %00 can also be used more than once and in places -; other than the start of the expansion. -; -%endif -%assign arg_off 0 - -%imacro arg 0-1 2 ;arg defined the old way - equ arg_off -%assign arg_off %1+arg_off -%endmacro - -%ifdef newmsg -arg_example arg -%endif - -%imacro arg2 0-1 2 ;arg defined the new way -%00 equ arg_off -%assign arg_off %1+arg_off -%endmacro - -%ifdef oldmsg -arg_example2 arg2 - -;----------------------------------------------------------------------------- -; Change made by Jules and John in INSNS.DAT -; -; Various instruction in which the size of an immediate is built-in to the -; instruction set, now allow you to redundantly specify that size as long -; as you specify it correctly -; - AAD byte 5 - AAM byte 5 - BT bx, byte 3 - BTC cx, byte 4 - BTR dx, byte 5 - BTS si, byte 6 - IN eax, byte 0x40 - INT byte 21h - OUT byte 70h, ax - RET word 2 - RETN word 2 - RETF word 4 - -; note "ENTER" has not been changed yet. - -;----------------------------------------------------------------------------- -; Enhancement by hpa in insns.dat et al -; -; Simplified adding new instructions, and added some missing instructions -; - int03 ; Instead of INT3 - ud1 ; No documented mnemonic for this one - ud2 - sysenter - sysexit - syscall - sysret - fxsave [ebx] - fxrstor [es:ebx+esi*4+0x3000] - -;----------------------------------------------------------------------------- -; Enhancement by hpa in insns.dat et al -; -; Actually make SSE work, and use the -p option to ndisasm to select -; one of several aliased opcodes -; - sqrtps xmm0,[ebx+10] ; SSE opcode - paddsiw mm0,[ebx+10] ; Cyrix opcode with the same byte seq. - -;----------------------------------------------------------------------------- -; Enhancement by hpa in preproc.c -; -; Support %undef to remoce a single-line macro -; -%define TEST_ME 42 -%ifndef TEST_ME -%error "TEST_ME not defined after %define" -%endif - -%undef TEST_ME -%ifdef TEST_ME -%error "TEST_ME defined after %undef" -%endif - -;----------------------------------------------------------------------------- -; Bug fix by hpa in insns.dat -; -; PSHUFW and PINSRW weren't handling the implicit sizes correctly; all of -; the entries below are (or should be) legal -; - pshufw mm2, mm1, 3 - pshufw mm3,[ebx],2 - pshufw mm7,[0+edi*8],1 - - pshufw mm2, mm1, byte 3 - pshufw mm3,[ebx],byte 2 - pshufw mm7,[0+edi*8],byte 1 - - pshufw mm2, mm1, 3 - pshufw mm3, qword [ebx], 2 - pshufw mm7, qword [0+edi*8], 1 - - pshufw mm2, mm1, byte 3 - pshufw mm3, qword [ebx], byte 2 - pshufw mm7, qword [0+edi*8], byte 1 - - pinsrw mm1, [esi], 1 - pinsrw mm1, word [esi], 1 - pinsrw mm1, [esi], byte 1 - pinsrw mm1, word [esi], byte 1 - - -%endif ; oldmsg - -%ifdef oldcrash ;************************************************************* - -This_label_is_256_characters_long__There_used_to_be_a_bug_in_stdscan_which_made_it_crash_when_it_did_a_keyword_search_on_any_label_longer_than_255_characters__Now_anything_longer_than_MAX_KEYWORD_is_always_a_symbol__It_will_not_even_try_a_keyword_search___ - -;----------------------------------------------------------------------------- -; Bug fixed by John in preproc.c -; -; Builds of NASM that prohibit dereferencing a NULL pointer used to crash if a -; macro that started with a blank line was invoked with a label -; -%macro empty_macro 0 - -%endm - -emlabel empty_macro - jmp emlabel - -;----------------------------------------------------------------------------- -; Enhancement by Conan Brink in preproc.c -; -; Allow %rep to be nested -; -%rep 4 -%rep 5 - nop -%endrep -%endrep - -%endif diff --git a/doc/Changes b/doc/Changes new file mode 100644 index 0000000..f383182 --- /dev/null +++ b/doc/Changes @@ -0,0 +1,542 @@ +Change log for NASM +=================== + +This is the Changelog for the official releases; this is a modified +version. For the changes from the official release, see the MODIFIED file. + +0.90 released October 1996 +-------------------------- + +First release version. First support for object file output. Other +changes from previous version (0.3x) too numerous to document. + +0.91 released November 1996 +--------------------------- + +Loads of bug fixes. +Support for RDF added. +Support for DBG debugging format added. +Support for 32-bit extensions to Microsoft OBJ format added. +Revised for Borland C: some variable names changed, makefile added. +LCC support revised to actually work. +JMP/CALL NEAR/FAR notation added. +`a16', `o16', `a32' and `o32' prefixes added. +Range checking on short jumps implemented. +MMX instruction support added. +Negative floating point constant support added. +Memory handling improved to bypass 64K barrier under DOS. +$ prefix to force treatment of reserved words as identifiers added. +Default-size mechanism for object formats added. +Compile-time configurability added. +`#', `@', `~' and `?' are now valid characters in labels. +`-e' and `-k' options in NDISASM added. + +0.92 released January 1997 +-------------------------- + +The FDIVP/FDIVRP and FSUBP/FSUBRP pairs had been inverted: this was +fixed. This also affected the LCC driver. + +Fixed a bug regarding 32-bit effective addresses of the form +[other_register+ESP]. + +Documentary changes, notably documentation of the fact that Borland +Win32 compilers use `obj' rather than `win32' object format. + +Fixed the COMENT record in OBJ files, which was formatted +incorrectly. + +Fixed a bug causing segfaults in large RDF files. + +OBJ format now strips initial periods from segment and group +definitions, in order to avoid complications with the local label +syntax. + +Fixed a bug in disassembling far calls and jumps in NDISASM. + +Added support for user-defined sections in COFF and ELF files. + +Compiled the DOS binaries with a sensible amount of stack, to +prevent stack overflows on any arithmetic expression containing +parentheses. + +Fixed a bug in handling of files that do not terminate in a newline. + +0.93 released January 1997 +-------------------------- + +This release went out in a great hurry after semi-crippling bugs +were found in 0.92. + +Really _did_ fix the stack overflows this time. *blush* + +Had problems with EA instruction sizes changing between passes, when +an offset contained a forward reference and so 4 bytes were +allocated for the offset in pass one; by pass two the symbol had +been defined and happened to be a small absolute value, so only 1 +byte got allocated, causing instruction size mismatch between passes +and hence incorrect address calculations. Fixed. + +Stupid bug in the revised ELF section generation fixed (associated +string-table section for .symtab was hard-coded as 7, even when this +didn't fit with the real section table). Was causing `ld' to +seg-fault under Linux. + +Included a new Borland C makefile, Makefile.bc2, donated by Fox +Cutter <lmb@comtch.iea.com>. + +0.94 released April 1997 +------------------------ + +Major item: added the macro processor. + +Added undocumented instructions SMI, IBTS, XBTS and LOADALL286. Also +reorganised CMPXCHG instruction into early-486 and Pentium forms. +Thanks to Thobias Jones for the information. + +Fixed two more stupid bugs in ELF, which were causing `ld' to +continue to seg-fault in a lot of non-trivial cases. + +Fixed a seg-fault in the label manager. + +Stopped FBLD and FBSTP from _requiring_ the TWORD keyword, which is +the only option for BCD loads/stores in any case. + +Ensured FLDCW, FSTCW and FSTSW can cope with the WORD keyword, if +anyone bothers to provide it. Previously they complained unless no +keyword at all was present. + +Some forms of FDIV/FDIVR and FSUB/FSUBR were still inverted: a +vestige of a bug that I thought had been fixed in 0.92. This was +fixed, hopefully for good this time... + +Another minor phase error (insofar as a phase error can _ever_ be +minor) fixed, this one occurring in code of the form + rol ax,forward_reference + forward_reference equ 1 + +The number supplied to TIMES is now sanity-checked for positivity, +and also may be greater than 64K (which previously didn't work on +16-bit systems). + +Added Watcom C makefiles, and misc/pmw.bat, donated by Dominik Behr. + +Added the INCBIN pseudo-opcode. + +Due to the advent of the preprocessor, the [INCLUDE] and [INC] +directives have become obsolete. They are still supported in this +version, with a warning, but won't be in the next. + +Fixed a bug in OBJ format, which caused incorrect object records to +be output when absolute labels were made global. + +Updates to RDOFF subdirectory, and changes to outrdf.c. + +0.95 released July 1997 +----------------------- + +Fixed yet another ELF bug. This one manifested if the user relied on +the default segment, and attempted to define global symbols without +first explicitly declaring the target segment. + +Added makefiles (for NASM and the RDF tools) to build Win32 console +apps under Symantec C++. Donated by Mark Junker. + +Added `macros.bas' and `insns.bas', QBasic versions of the Perl +scripts that convert `standard.mac' to `macros.c' and convert +`insns.dat' to `insnsa.c' and `insnsd.c'. Also thanks to Mark +Junker. + +Changed the diassembled forms of the conditional instructions so +that JB is now emitted as JC, and other similar changes. Suggested +list by Ulrich Doewich. + +Added `@' to the list of valid characters to begin an identifier +with. + +Documentary changes, notably the addition of the `Common Problems' +section in nasm.doc. + +Fixed a bug relating to 32-bit PC-relative fixups in OBJ. + +Fixed a bug in perm_copy() in labels.c which was causing exceptions +in cleanup_labels() on some systems. + +Positivity sanity check in TIMES argument changed from a warning to +an error following a further complaint. + +Changed the acceptable limits on byte and word operands to allow +things like `~10111001b' to work. + +Fixed a major problem in the preprocessor which caused seg-faults if +macro definitions contained blank lines or comment-only lines. + +Fixed inadequate error checking on the commas separating the +arguments to `db', `dw' etc. + +Fixed a crippling bug in the handling of macros with operand counts +defined with a `+' modifier. + +Fixed a bug whereby object file formats which stored the input file +name in the output file (such as OBJ and COFF) weren't doing so +correctly when the output file name was specified on the command +line. + +Removed [INC] and [INCLUDE] support for good, since they were +obsolete anyway. + +Fixed a bug in OBJ which caused all fixups to be output in 16-bit +(old-format) FIXUPP records, rather than putting the 32-bit ones in +FIXUPP32 (new-format) records. + +Added, tentatively, OS/2 object file support (as a minor variant on +OBJ). + +Updates to Fox Cutter's Borland C makefile, Makefile.bc2. + +Removed a spurious second fclose() on the output file. + +Added the `-s' command line option to redirect all messages which +would go to stderr (errors, help text) to stdout instead. + +Added the `-w' command line option to selectively suppress some +classes of assembly warning messages. + +Added the `-p' pre-include and `-d' pre-define command-line options. + +Added an include file search path: the `-i' command line option. + +Fixed a silly little preprocessor bug whereby starting a line with a +`%!' environment-variable reference caused an `unknown directive' +error. + +Added the long-awaited listing file support: the `-l' command line +option. + +Fixed a problem with OBJ format whereby, in the absence of any +explicit segment definition, non-global symbols declared in the +implicit default segment generated spurious EXTDEF records in the +output. + +Added the NASM environment variable. + +From this version forward, Win32 console-mode binaries will be +included in the DOS distribution in addition to the 16-bit binaries. +Added Makefile.vc for this purpose. + +Added `return 0;' to test/objlink.c to prevent compiler warnings. + +Added the __NASM_MAJOR__ and __NASM_MINOR__ standard defines. + +Added an alternative memory-reference syntax in which prefixing an +operand with `&' is equivalent to enclosing it in square brackets, +at the request of Fox Cutter. + +Errors in pass two now cause the program to return a non-zero error +code, which they didn't before. + +Fixed the single-line macro cycle detection, which didn't work at +all on macros with no parameters (caused an infinite loop). Also +changed the behaviour of single-line macro cycle detection to work +like cpp, so that macros like `extrn' as given in the documentation +can be implemented. + +Fixed the implementation of WRT, which was too restrictive in that +you couldn't do `mov ax,[di+abc wrt dgroup]' because (di+abc) wasn't +a relocatable reference. + +0.96 released November 1997 +--------------------------- + +Fixed a bug whereby, if `nasm sourcefile' would cause a filename +collision warning and put output into `nasm.out', then `nasm +sourcefile -o outputfile' still gave the warning even though the +`-o' was honoured. + +Fixed name pollution under Digital UNIX: one of its header files +defined R_SP, which broke the enum in nasm.h. + +Fixed minor instruction table problems: FUCOM and FUCOMP didn't have +two-operand forms; NDISASM didn't recognise the longer register +forms of PUSH and POP (eg FF F3 for PUSH BX); TEST mem,imm32 was +flagged as undocumented; the 32-bit forms of CMOV had 16-bit operand +size prefixes; `AAD imm' and `AAM imm' are no longer flagged as +undocumented because the Intel Architecture reference documents +them. + +Fixed a problem with the local-label mechanism, whereby strange +types of symbol (EQUs, auto-defined OBJ segment base symbols) +interfered with the `previous global label' value and screwed up +local labels. + +Fixed a bug whereby the stub preprocessor didn't communicate with +the listing file generator, so that the -a and -l options in +conjunction would produce a useless listing file. + +Merged `os2' object file format back into `obj', after discovering +that `obj' _also_ shouldn't have a link pass separator in a module +containing a non-trivial MODEND. Flat segments are now declared +using the FLAT attribute. `os2' is no longer a valid object format +name: use `obj'. + +Removed the fixed-size temporary storage in the evaluator. Very very +long expressions (like `mov ax,1+1+1+1+...' for two hundred 1s or +so) should now no longer crash NASM. + +Fixed a bug involving segfaults on disassembly of MMX instructions, +by changing the meaning of one of the operand-type flags in nasm.h. +This may cause other apparently unrelated MMX problems; it needs to +be tested thoroughly. + +Fixed some buffer overrun problems with large OBJ output files. +Thanks to DJ Delorie for the bug report and fix. + +Made preprocess-only mode actually listen to the %line markers as it +prints them, so that it can report errors more sanely. + +Re-designed the evaluator to keep more sensible track of expressions +involving forward references: can now cope with previously-nightmare +situations such as + mov ax,foo | bar + foo equ 1 + bar equ 2 + +Added the ALIGN and ALIGNB standard macros. + +Added PIC support in ELF: use of WRT to obtain the four extra +relocation types needed. + +Added the ability for output file formats to define their own +extensions to the GLOBAL, COMMON and EXTERN directives. + +Implemented common-variable alignment, and global-symbol type and +size declarations, in ELF. + +Implemented NEAR and FAR keywords for common variables, plus +far-common element size specification, in OBJ. + +Added a feature whereby EXTERNs and COMMONs in OBJ can be given a +default WRT specification (either a segment or a group). + +Transformed the Unix NASM archive into an auto-configuring package. + +Added a sanity-check for people applying SEG to things which are +already segment bases: this previously went unnoticed by the SEG +processing and caused OBJ-driver panics later. + +Added the ability, in OBJ format, to deal with `MOV EAX,<segment>' +type references: OBJ doesn't directly support dword-size segment +base fixups, but as long as the low two bytes of the constant term +are zero, a word-size fixup can be generated instead and it will +work. + +Added the ability to specify sections' alignment requirements in +Win32 object files and pure binary files. + +Added preprocess-time expression evaluation: the %assign (and +%iassign) directive and the bare %if (and %elif) conditional. Added +relational operators to the evaluator, for use only in %if +constructs: the standard relationals = < > <= >= <> (and C-like +synonyms == and !=) plus low-precedence logical operators &&, ^^ and +||. + +Added a preprocessor repeat construct: %rep / %exitrep / %endrep. + +Added the __FILE__ and __LINE__ standard macros. + +Added a sanity check for number constants being greater than +0xFFFFFFFF. The warning can be disabled. + +Added the %0 token whereby a variadic multi-line macro can tell how +many parameters it's been given in a specific invocation. + +Added %rotate, allowing multi-line macro parameters to be cycled. + +Added the `*' option for the maximum parameter count on multi-line +macros, allowing them to take arbitrarily many parameters. + +Added the ability for the user-level forms of EXTERN, GLOBAL and +COMMON to take more than one argument. + +Added the IMPORT and EXPORT directives in OBJ format, to deal with +Windows DLLs. + +Added some more preprocessor %if constructs: %ifidn / %ifidni (exact +textual identity), and %ifid / %ifnum / %ifstr (token type testing). + +Added the ability to distinguish SHL AX,1 (the 8086 version) from +SHL AX,BYTE 1 (the 286-and-upwards version whose constant happens to +be 1). + +Added NetBSD/FreeBSD/OpenBSD's variant of a.out format, complete +with PIC shared library features. + +Changed NASM's idiosyncratic handling of FCLEX, FDISI, FENI, FINIT, +FSAVE, FSTCW, FSTENV, and FSTSW to bring it into line with the +otherwise accepted standard. The previous behaviour, though it was a +deliberate feature, was a deliberate feature based on a +misunderstanding. Apologies for the inconvenience. + +Improved the flexibility of ABSOLUTE: you can now give it an +expression rather than being restricted to a constant, and it can +take relocatable arguments as well. + +Added the ability for a variable to be declared as EXTERN multiple +times, and the subsequent definitions are just ignored. + +We now allow instruction prefixes (CS, DS, LOCK, REPZ etc) to be +alone on a line (without a following instruction). + +Improved sanity checks on whether the arguments to EXTERN, GLOBAL +and COMMON are valid identifiers. + +Added misc/exebin.mac to allow direct generation of .EXE files by +hacking up an EXE header using DB and DW; also added test/binexe.asm +to demonstrate the use of this. Thanks to Yann Guidon for +contributing the EXE header code. + +ndisasm forgot to check whether the input file had been successfully +opened. Now it does. Doh! + +Added the Cyrix extensions to the MMX instruction set. + +Added a hinting mechanism to allow [EAX+EBX] and [EBX+EAX] to be +assembled differently. This is important since [ESI+EBP] and +[EBP+ESI] have different default base segment registers. + +Added support for the PharLap OMF extension for 4096-byte segment +alignment. + +0.97 released December 1997 +--------------------------- + +This was entirely a bug-fix release to 0.96, which seems to have got +cursed. Silly me. + +Fixed stupid mistake in OBJ which caused `MOV EAX,<constant>' to +fail. Caused by an error in the `MOV EAX,<segment>' support. + +ndisasm hung at EOF when compiled with lcc on Linux because lcc on +Linux somehow breaks feof(). ndisasm now does not rely on feof(). + +A heading in the documentation was missing due to a markup error in +the indexing. Fixed. + +Fixed failure to update all pointers on realloc() within extended- +operand code in parser.c. Was causing wrong behaviour and seg faults +on lines such as `dd 0.0,0.0,0.0,0.0,...' + +Fixed a subtle preprocessor bug whereby invoking one multi-line +macro on the first line of the expansion of another, when the second +had been invoked with a label defined before it, didn't expand the +inner macro. + +Added internal.doc back in to the distribution archives - it was +missing in 0.96 *blush* + +Fixed bug causing 0.96 to be unable to assemble its own test files, +specifically objtest.asm. *blush again* + +Fixed seg-faults and bogus error messages caused by mismatching +%rep and %endrep within multi-line macro definitions. + +Fixed a problem with buffer overrun in OBJ, which was causing +corruption at ends of long PUBDEF records. + +Separated DOS archives into main-program and documentation to reduce +download size. + +0.98 released May 1999 +---------------------- + +Fixed a bug whereby STRUC didn't work at all in RDF. + +Fixed a problem with group specification in PUBDEFs in OBJ. + +Improved ease of adding new output formats. Contribution due to +Fox Cutter. + +Fixed a bug in relocations in the `bin' format: was showing up when +a relocatable reference crossed an 8192-byte boundary in any output +section. + +Fixed a bug in local labels: local-label lookups were inconsistent +between passes one and two if an EQU occurred between the definition +of a global label and the subsequent use of a local label local to +that global. + +Fixed a seg-fault in the preprocessor (again) which happened when +you use a blank line as the first line of a multi-line macro +definition and then defined a label on the same line as a call to +that macro. + +Fixed a stale-pointer bug in the handling of the NASM environment +variable. Thanks to Thomas McWilliams. + +ELF had a hard limit on the number of sections which caused +segfaults when transgressed. Fixed. + +Added ability for ndisasm to read from stdin by using `-' as the +filename. + +ndisasm wasn't outputting the TO keyword. Fixed. + +Fixed error cascade on bogus expression in %if - an error in +evaluation was causing the entire %if to be discarded, thus creating +trouble later when the %else or %endif was encountered. + +Forward reference tracking was instruction-granular not operand- +granular, which was causing 286-specific code to be generated +needlessly on code of the form `shr word [forwardref],1'. Thanks to +Jim Hague for sending a patch. + +All messages now appear on stdout, as sending them to stderr serves +no useful purpose other than to make redirection difficult. + +Fixed the problem with EQUs pointing to an external symbol - this +now generates an error message. + +Allowed multiple size prefixes to an operand, of which only the first +is taken into account. + +Incorporated John Fine's changes, including fixes of a large number +of preprocessor bugs, some small problems in OBJ, and a reworking of +label handling to define labels before their line is assembled, rather +than after. + +Reformatted a lot of the source code to be more readable. Included +'coding.txt' as a guideline for how to format code for contributors. + +Stopped nested %reps causing a panic - they now cause a slightly more +friendly error message instead. + +Fixed floating point constant problems (patch by Pedro Gimeno) + +Fixed the return value of insn_size() not being checked for -1, indicating +an error. + +Incorporated 3D now instructions. + +Fixed the 'mov eax, eax + ebx' bug. + +Fixed the GLOBAL EQU bug in ELF. Released developers release 3. + +Incorporated John Fine's command line parsing changes + +Incorporated David Lindauer's OMF debug support + +Made changes for LCC 4.0 support (__NASM_CDecl__, removed register size +specification warning when sizes agree). + +Released NASM 0.98 Pre-release 1 + +fixed bug in outcoff.c to do with truncating section names longer +than 8 characters, referencing beyond end of string; 0.98 pre-release 2 + +added response file support, improved command line handling, new layout +help screen + +fixed limit checking bug, 'OUT byte nn, reg' bug, and a couple of rdoff +related bugs, updated Wishlist; 0.98 Prerelease 3. + +See the file "MODIFIED" for changes after 0.98p3. diff --git a/doc/Readme b/doc/Readme new file mode 100644 index 0000000..dbbd18d --- /dev/null +++ b/doc/Readme @@ -0,0 +1,49 @@ + + NetWide Assembler for the SciTech MGL + ------------------------------------- + +This is a modified distribution of NASM, the Netwide Assembler. NASM +is a prototype general-purpose x86 assembler. It will currently output +flat-form binary files, a.out, COFF and ELF Unix object files, +Microsoft Win32 and 16-bit DOS object files, OS/2 object files, the +as86 object format, and a home-grown format called RDF. + +This version of NASM has been modified by SciTech Software such that it +can be used to assemble source code in the SciTech MGL graphics library, +and understands enough of TASM assembler syntax such that both NASM +and TASM can be used to generate assembler modules for the MGL graphics +library. A complete macro package is provided as part of the SciTech +MGL that provides macros to help in building modules that will work with +either assembler. + +A pre-compiled binary of NASM is provided as part of the SciTech MGL +graphics library, however you may re-build the assembler from the sources +provided. To do so make sure you have the SciTech Makefile Utilties +correctly configured for your compiler, and then simly type: + + unset DBG + dmake OPT=1 + +to build an optimised, non-debug version of the assembler. If you wish +to rebuild for a different OS other than DOS or Win32, you will need to +first compile the DMAKE make program for your OS. See the DMAKE source +code for more information. + +Licensing issues: +----------------- + +For information about how you can distribute and use NASM, see the +file Licence. + +The NASM web page is at http://www.cryogen.com/Nasm/ + +Bug reports specific to the SciTech MGL should be posted to SciTech +Software MGL newsgroups: + + news://news.scitechsoft.com/scitech.mgl.developer + +Bug reports (and patches if you can) for NASM itself that are not SciTech +MGL related should be sent to the authors at: + + Julian Hall <jules@earthcorp.com> + Simon Tatham <anakin@pobox.com> diff --git a/doc/Wishlist b/doc/Wishlist new file mode 100644 index 0000000..ccf7760 --- /dev/null +++ b/doc/Wishlist @@ -0,0 +1,276 @@ +NASM Wishlist +============= + +Numbers on right hand side are version numbers that it would be nice to +have this done by. ? means I haven't looked at it yet. + +- Check misc/ide.cfg into RCS as Watcom IDE enhancement thingy. 0.98 + (nop@dlc.fi) + +- Package the Linux Assembler HOWTO. 0.98 + +- 3DNow!, SSE and other extensions need documenting. 0.98 + hpa: Does it really make sense to have a whole instruction set + reference packaged with the assembler? + +- prototypes of lrotate don't match in test/*. Fix. 0.98 + +- Build djgpp binaries for 0.98 onwards. Look into PMODE/W as a stub 0.98 + - it might be a lot better than CWSDPMI. It's in PMW133.ZIP. + +- %undef operator that goes along with %define DONE + +- Fix `%error' giving error messages twice. 0.99 + Not especially important, as changes planned for 1.1x below will make + the preprocessor be only called once. + +- Sort out problems with OBJ: 0.99 + * TLINK32 doesn't seem to like SEGDEF32 et al. So for that, we + should avoid xxx32 records wherever we can. + * However, didn't we change _to_ using xxx32 at some stage? Try + to remember why and when. + * Apparently Delphi's linker has trouble with two or more + globals being defined inside a PUBDEF32. Don't even know if it + _can_ cope with a PUBDEF16. + * Might need extra flags. *sigh* + +- Symbol table output may possibly be useful. 0.99 + Ken Martwick (kenm@efn.org) wants the following format: + labelname type offset(hex) repetition count + Possibly include xref addresses after repetition count? + +- There are various other bugs in outelf.c that make certain kinds 0.99 + of relocation not work. See zbrown.asm. Looks like we may have to do + a major rewrite of parts of it. Compare some NASM code output with + equivalent GAS code output. Look at the ELF spec. Generally fix things. + +- NASM is currently using a kludge in ELF that involves defining 0.99 + a symbol at a zero absolute offset. This isn't needed, as the + documented solution to the problem that this solves is to use + SHN_UNDEF. + +- Debug information, in all formats it can be usefully done in. 0.99 + * including line-number record support. + * "George C. Lindauer" <gclind01@starbase.spd.louisville.edu> + wants to have some say in how this goes through. + * Andrew Crabtree <andrewc@rosemail.rose.hp.com> wants to help out. + +- Think about a line-continuation character. 0.99 + +- Consider allowing declaration of two labels on the same line, + syntax 'label1[:] label2[:] ... instruction'. Need to investigate + feasibility. 0.99 + +- Quoting of quotes by doubling them, in string and char constants. 0.99 + +- Two-operand syntax for SEGMENT/SECTION macro to avoid warnings 0.99 + of ignored section parameters on reissue of __SECT__. + Or maybe skip the warning if the given parameters are identical to + what was actually stored. Investigate. + +- Apparently we are not missing a PSRAQ instruction, because it + doesn't exist. Check that it doesn't exist as an undocumented + instruction, or something stupid like that. 0.99 + +- Any assembled form starting 0x80 can also start 0x82. ndisasm 1.00 + should know this. New special code in instruction encodings, + probably. + +- Pointing an EQU at an external symbol now generates an error. There 1.05 + may be a better way of handling this; we should look into it. + Ideally, the label mechanism should be changed to cope with one + label being declared relative to another - that may work, but could be + a pain to implement (or is it? it may be easy enough that you just + need to declare a new offset in the same segment...) This should be done + before v1.0 is released. There is a comment regarding this in labels.c, + towards the end of the file, which discusses ways of fixing this. + +- nested %rep used to cause a panic. Now a more informative error 1.10 + message is produced. This problem whould be fixed before v1.0. + See comment in switch() statement block for PP_REP in do_directive() + in preproc.c (line 1585, or thereabouts) + +- Contribution: zgraeme.tar contains improved hash table routines ? + contributed by Graeme Defty <graeme@HK.Super.NET> for use in the + label manager. + +- Contribution: zsyntax.zip contains a syntax-highlighting mode for ? + NASM, for use with the Aurora text editor (??). + +- Contribution: zvim.zip contains a syntax-highlighting mode for ? + NASM, for use with vim. + +- Contribution: zkendal1.zip and zkendal2.zip contain Kendall ? + Bennett's (<KendallB@scitechsoft.com>) alternative syntax stuff, + providing an alternative syntax mode for NASM which allows a macro + set to be written that allows the same source files to be + assembled with NASM and TASM. + +- Add the UD2 instruction. DONE + +- Add the four instructions documented in 24368901.pdf (Intel's own DONE + document). + +- Some means of avoiding MOV memoffs,EAX which apparently the 1.10? + Pentium pairing detector thinks modifies EAX. Similar means of + choosing instruction encodings where necessary. + +- The example of ..@ makes it clear that a ..@ label isn't just ? + local, but doesn't make it clear that it isn't just global either. + +- hpa wants an evaluator operator for ceil(log2(x)). ? + +- Extra reloc types in ELF: R_386_16 type 20, PC16 is 21, 8 is 22, PC8 is 23. + Add support for the 16s at least. ? + + +- Lazy section creation or selective section output, in COFF/win32 ? + at least and probably other formats: don't bother to emit a section + if it contains no data. Particularly the default auto-created + section. We believe zero-length sections crash at least WLINK (in + win32). + +- Make the flags field in `struct itemplate' in insns.h a long ? + instead of an int. + +- Implement %ifref to check whether a single-line macro has ever been ? + expanded since (last re) definition. Or maybe not. We'll see. + +- add pointer to \k{insLEAVE} and \k{insENTER} in chapters about ? + mixed-language programming. + +- Some equivalent to TASM's GLOBAL directive, ie something which ? + defines a symbol as external if it doesn't end up being defined + but defines it as public if it does end up being defined. + +- Documentation doesn't explain about C++ name mangling. ? + +- see if BITS can be made to do anything sensible in obj (eg set the ? + default new-segment property to Use32). + +- OBJ: coalesce consecutive offset and segment fixups for the same ? + location into full-32bit-pointer fixups. This is apparently + necessary because some twazzock in the PowerBASIC development + team didn't deign to support the OMF spec the way the rest of the + world sees it. + +- Allow % to be separated from the rest of a preproc directive, for ? + alternative directive indentation styles. + +- __DATE__, __TIME__, and text variants of __NASM_MAJOR__ and ? + __NASM_MINOR__. + +- Warn on TIMES combined with multi-line macros. TIMES gets applied 1.00 + to first line only - should bring to users' attention. + +- Re-work the evaluator, again, with a per-object-format fixup 1.10 + routine, so as to be able to cope with section offsets "really" + being pure numbers; should be able to allow at _least_ the two + common idioms + TIMES 510-$ DB 0 ; bootsector + MOV AX,(PROG_END-100H)/16 ; .COM TSR + Would need to call the fixup throughout the evaluator, and the + fixup would have to be allowed to return UNKNOWN on pass one if it + had to. (_Always_ returning UNKNOWN on pass one, though a lovely + clean design, breaks the first of the above examples.) + +- Preprocessor identifier concatenation? 1.10 + +- Arbitrary section names in `bin'. ? + Is this necessary? Is it even desirable? + hpa: Desirable, yes. Necessary? Probably not, but there are + definitely cases where it becomes quite useful. + +- Ability to read from a pipe. Obviously not useful under dos, so 1.10 + memory problems with storing entire input file aren't a problem + either. + + Related topic: file caching under DOS/32 bit... 1.10? + maybe even implement discardable buffers that get thrown away + when we get a NULL returned from malloc(). Only really useful under + DOS. Think about it. + + Another related topic: possibly spool out the pre-processed 1.10? + stuff to a file, to avoid having to re-process it. Possible problems + with preprocessor values not known on pass 1? Have a look... + + Or maybe we can spool out a pre-parsed version...? 1.10 + Need to investigate feasibility. Does the results from the parser + change from pass 1 to pass 2? Would it be feasible to alter it so that + the parser returns an invariant result, and this is then processed + afterwards to resolve label references, etc? + +- Subsection support? ? + +- A good ALIGN mechanism, similar to GAS's. GAS pads out space by 1.10? + means of the following (32-bit) instructions: + 8DB42600000000 lea esi,[esi+0x0] + 8DB600000000 lea esi,[esi+0x0] + 8D742600 lea esi,[esi+0x0] + 8D7600 lea esi,[esi+0x0] + 8D36 lea esi,[esi] + 90 nop + It uses up to two of these instructions to do up to 14-byte pads; + when more than 14 bytes are needed, it issues a (short) jump to + the end of the padded section and then NOPs the rest. Come up with + a similar scheme for 16 bit mode, and also come up with a way to + use it - internal to the assembler, so that programs using ALIGN + don't knock over preprocess-only mode. + Also re-work the macro form so that when given one argument in a + code section it calls this feature. + +- Possibly a means whereby FP constants can be specified as ? + immediate operands to non-FP instructions. + * Possible syntax: MOV EAX,FLOAT 1.2 to get a single-precision FP + constant. Then maybe MOV EAX,HI_FLOAT 1.2 and MOV EAX,LO_FLOAT + 1.2 to get the two halves of a double-precision one. Best to + ignore extended-precision in case it bites. + * Alternatively, maybe MOV EAX,FLOAT(4,0-4,1.2) to get bytes 0-4 + (ie 0-3) of a 4-byte constant. Then HI_FLOAT is FLOAT(8,4-8,x) + and LO_FLOAT is FLOAT(8,0-4,x). But this version allows two-byte + chunks, one-byte chunks, even stranger chunks, and pieces of + ten-byte reals to be bandied around as well. + +- A UNION macro might be quite cool, now that ABSOLUTE is sane ? + enough to be able to handle it. + +- An equivalent to gcc's ## stringify operator, plus string ? + concatenation, somehow implemented without undue ugliness, so as + to be able to do `%include "/my/path/%1"' in a macro, or something + similar... + +- Actually _do_ something with the processor, privileged and 1.10 + undocumented flags in the instruction table. When this happens, + consider allowing PMULHRW to map to either of the Cyrix or AMD + versions? + hpa: The -p option to ndisasm now uses this to some extent. + +- Maybe NEC V20/V30 instructions? ? + hpa: What are they? Should be trivial to implement. + +- Yet more object formats. + * Possibly direct support for .EXE files? 1.10 + +- Symbol map in binary format. Format-specific options... 1.10? + +- REDESIGN: Think about EQU dependency, and about start-point 1.20? + specification in OBJ. Possibly re-think directive support. + +- Think about a wrapper program like gcc? Possibly invent a _patch_ 2.00? + for gcc so that it can take .asm files on the command line? + +- If a wrapper happens, think about adding an option to cause the ? + resulting executable file to be executed immediately, thus + allowing NASM source files to have #!... (probably silly) + +- Multi-platform support? If so: definitely Alpha; possibly Java ? + byte code; probably ARM/StrongARM; maybe Sparc; maybe Mips; maybe + Vax. Perhaps Z80 and 6502, just for a laugh? + +- Consider a 'verbose' option that prints information about the ? + resulting object file onto stdout. + +- Line numbers in the .lst file don't match the line numbers in the ? + input. They probably should, rather than the current matching + of the post-preprocessor line numbers. + diff --git a/exebin.mac b/exebin.mac deleted file mode 100644 index 89c6889..0000000 --- a/exebin.mac +++ /dev/null @@ -1,114 +0,0 @@ -; -*- nasm -*- - -; NASM macro file to allow the `bin' output format to generate - -; simple .EXE files by constructing the EXE header by hand. - -; Adapted from a contribution by Yann Guidon <whygee_corp@hol.fr> - - - -%define EXE_stack_size EXE_realstacksize - - - -%macro EXE_begin 0 - - ORG 0E0h - - section .text - - - -header_start: - - db 4Dh,5Ah ; EXE file signature - - dw EXE_allocsize % 512 - - dw (EXE_allocsize + 511) / 512 - - dw 0 ; relocation information: none - - dw (header_end-header_start)/16 ; header size in paragraphs - - dw (EXE_absssize + EXE_realstacksize) / 16 ; min extra mem - - dw (EXE_absssize + EXE_realstacksize) / 16 ; max extra mem - - dw -10h ; Initial SS (before fixup) - - dw EXE_endbss + EXE_realstacksize ; Initial SP (1K DPMI+1K STACK) - - dw 0 ; (no) Checksum - - dw 100h ; Initial IP - start just after the header - - dw -10h ; Initial CS (before fixup) - - dw 0 ; file offset to relocation table: none - - dw 0 ; (no overlay) - - align 16,db 0 - -header_end: - - - -EXE_startcode: - - section .data - -EXE_startdata: - - section .bss - -EXE_startbss: - -%endmacro - - - -%macro EXE_stack 1 - -EXE_realstacksize equ %1 - -%define EXE_stack_size EXE_bogusstacksize ; defeat EQU in EXE_end - -%endmacro - - - -%macro EXE_end 0 - - section .text - -EXE_endcode: - - section .data - -EXE_enddata: - - section .bss - - alignb 4 - -EXE_endbss: - - - -EXE_acodesize equ (EXE_endcode-EXE_startcode+3) & (~3) - -EXE_datasize equ EXE_enddata-EXE_startdata - -EXE_absssize equ (EXE_endbss-EXE_startbss+3) & (~3) - -EXE_allocsize equ EXE_acodesize + EXE_datasize - - - -EXE_stack_size equ 0x800 ; default if nothing else was used - -%endmacro - diff --git a/internal.doc b/internal.doc deleted file mode 100644 index 8a73aa1..0000000 --- a/internal.doc +++ /dev/null @@ -1,291 +0,0 @@ -Internals of the Netwide Assembler -================================== - -The Netwide Assembler is intended to be a modular, re-usable x86 -assembler, which can be embedded in other programs, for example as -the back end to a compiler. - -The assembler is composed of modules. The interfaces between them -look like: - - +--- preproc.c ----+ - | | - +---- parser.c ----+ - | | | - | float.c | - | | - +--- assemble.c ---+ - | | | - nasm.c ---+ insnsa.c +--- nasmlib.c - | | - +--- listing.c ----+ - | | - +---- labels.c ----+ - | | - +--- outform.c ----+ - | | - +----- *out.c -----+ - -In other words, each of `preproc.c', `parser.c', `assemble.c', -`labels.c', `listing.c', `outform.c' and each of the output format -modules `*out.c' are independent modules, which do not directly -inter-communicate except through the main program. - -The Netwide *Disassembler* is not intended to be particularly -portable or reusable or anything, however. So I won't bother -documenting it here. :-) - -nasmlib.c ---------- - -This is a library module; it contains simple library routines which -may be referenced by all other modules. Among these are a set of -wrappers around the standard `malloc' routines, which will report a -fatal error if they run out of memory, rather than returning NULL. - -preproc.c ---------- - -This contains a macro preprocessor, which takes a file name as input -and returns a sequence of preprocessed source lines. The only symbol -exported from the module is `nasmpp', which is a data structure of -type `Preproc', declared in nasm.h. This structure contains pointers -to all the functions designed to be callable from outside the -module. - -parser.c --------- - -This contains a source-line parser. It parses `canonical' assembly -source lines, containing some combination of the `label', `opcode', -`operand' and `comment' fields: it does not process directives or -macros. It exports two functions: `parse_line' and `cleanup_insn'. - -`parse_line' is the main parser function: you pass it a source line -in ASCII text form, and it returns you an `insn' structure -containing all the details of the instruction on that line. The -parameters it requires are: - -- The location (segment, offset) where the instruction on this line - will eventually be placed. This is necessary in order to evaluate - expressions containing the Here token, `$'. - -- A function which can be called to retrieve the value of any - symbols the source line references. - -- Which pass the assembler is on: an undefined symbol only causes an - error condition on pass two. - -- The source line to be parsed. - -- A structure to fill with the results of the parse. - -- A function which can be called to report errors. - -Some instructions (DB, DW, DD for example) can require an arbitrary -amount of storage, and so some of the members of the resulting -`insn' structure will be dynamically allocated. The other function -exported by `parser.c' is `cleanup_insn', which can be called to -deallocate any dynamic storage associated with the results of a -parse. - -names.c -------- - -This doesn't count as a module - it defines a few arrays which are -shared between NASM and NDISASM, so it's a separate file which is -#included by both parser.c and disasm.c. - -float.c -------- - -This is essentially a library module: it exports one function, -`float_const', which converts an ASCII representation of a -floating-point number into an x86-compatible binary representation, -without using any built-in floating-point arithmetic (so it will run -on any platform, portably). It calls nothing, and is called only by -`parser.c'. Note that the function `float_const' must be passed an -error reporting routine. - -assemble.c ----------- - -This module contains the code generator: it translates `insn' -structures as returned from the parser module into actual generated -code which can be placed in an output file. It exports two -functions, `assemble' and `insn_size'. - -`insn_size' is designed to be called on pass one of assembly: it -takes an `insn' structure as input, and returns the amount of space -that would be taken up if the instruction described in the structure -were to be converted to real machine code. `insn_size' also requires -to be told the location (as a segment/offset pair) where the -instruction would be assembled, the mode of assembly (16/32 bit -default), and a function it can call to report errors. - -`assemble' is designed to be called on pass two: it takes all the -parameters that `insn_size' does, but has an extra parameter which -is an output driver. `assemble' actually converts the input -instruction into machine code, and outputs the machine code by means -of calling the `output' function of the driver. - -insnsa.c --------- - -This is another library module: it exports one very big array of -instruction translations. It has to be a separate module so that DOS -compilers, with less memory to spare than typical Unix ones, can -cope with it. - -labels.c --------- - -This module contains a label manager. It exports six functions: - -`init_labels' should be called before any other function in the -module. `cleanup_labels' may be called after all other use of the -module has finished, to deallocate storage. - -`define_label' is called to define new labels: you pass it the name -of the label to be defined, and the (segment,offset) pair giving the -value of the label. It is also passed an error-reporting function, -and an output driver structure (so that it can call the output -driver's label-definition function). `define_label' mentally -prepends the name of the most recently defined non-local label to -any label beginning with a period. - -`define_label_stub' is designed to be called in pass two, once all -the labels have already been defined: it does nothing except to -update the "most-recently-defined-non-local-label" status, so that -references to local labels in pass two will work correctly. - -`declare_as_global' is used to declare that a label should be -global. It must be called _before_ the label in question is defined. - -Finally, `lookup_label' attempts to translate a label name into a -(segment,offset) pair. It returns non-zero on success. - -The label manager module is (theoretically :) restartable: after -calling `cleanup_labels', you can call `init_labels' again, and -start a new assembly with a new set of symbols. - -listing.c ---------- - -This file contains the listing file generator. The interface to the -module is through the one symbol it exports, `nasmlist', which is a -structure containing six function pointers. The calling semantics of -these functions isn't terribly well thought out, as yet, but it -works (just about) so it's going to get left alone for now... - -outform.c ---------- - -This small module contains a set of routines to manage a list of -output formats, and select one given a keyword. It contains three -small routines: `ofmt_register' which registers an output driver as -part of the managed list, `ofmt_list' which lists the available -drivers on stdout, and `ofmt_find' which tries to find the driver -corresponding to a given name. - -The output modules ------------------- - -Each of the output modules, `outbin.o', `outelf.o' and so on, -exports only one symbol, which is an output driver data structure -containing pointers to all the functions needed to produce output -files of the appropriate type. - -The exception to this is `outcoff.o', which exports _two_ output -driver structures, since COFF and Win32 object file formats are very -similar and most of the code is shared between them. - -nasm.c ------- - -This is the main program: it calls all the functions in the above -modules, and puts them together to form a working assembler. We -hope. :-) - -Segment Mechanism ------------------ - -In NASM, the term `segment' is used to separate the different -sections/segments/groups of which an object file is composed. -Essentially, every address NASM is capable of understanding is -expressed as an offset from the beginning of some segment. - -The defining property of a segment is that if two symbols are -declared in the same segment, then the distance between them is -fixed at assembly time. Hence every externally-declared variable -must be declared in its own segment, since none of the locations of -these are known, and so no distances may be computed at assembly -time. - -The special segment value NO_SEG (-1) is used to denote an absolute -value, e.g. a constant whose value does not depend on relocation, -such as the _size_ of a data object. - -Apart from NO_SEG, segment indices all have their least significant -bit clear, if they refer to actual in-memory segments. For each -segment of this type, there is an auxiliary segment value, defined -to be the same number but with the LSB set, which denotes the -segment-base value of that segment, for object formats which support -it (Microsoft .OBJ, for example). - -Hence, if `textsym' is declared in a code segment with index 2, then -referencing `SEG textsym' would return zero offset from -segment-index 3. Or, in object formats which don't understand such -references, it would return an error instead. - -The next twist is SEG_ABS. Some symbols may be declared with a -segment value of SEG_ABS plus a 16-bit constant: this indicates that -they are far-absolute symbols, such as the BIOS keyboard buffer -under MS-DOS, which always resides at 0040h:001Eh. Far-absolutes are -handled with care in the parser, since they are supposed to evaluate -simply to their offset part within expressions, but applying SEG to -one should yield its segment part. A far-absolute should never find -its way _out_ of the parser, unless it is enclosed in a WRT clause, -in which case Microsoft 16-bit object formats will want to know -about it. - -Porting Issues --------------- - -We have tried to write NASM in portable ANSI C: we do not assume -little-endianness or any hardware characteristics (in order that -NASM should work as a cross-assembler for x86 platforms, even when -run on other, stranger machines). - -Assumptions we _have_ made are: - -- We assume that `short' is at least 16 bits, and `long' at least - 32. This really _shouldn't_ be a problem, since Kernighan and - Ritchie tell us we are entitled to do so. - -- We rely on having more than 6 characters of significance on - externally linked symbols in the NASM sources. This may get fixed - at some point. We haven't yet come across a linker brain-dead - enough to get it wrong anyway. - -- We assume that `fopen' using the mode "wb" can be used to write - binary data files. This may be wrong on systems like VMS, with a - strange file system. Though why you'd want to run NASM on VMS is - beyond me anyway. - -That's it. Subject to those caveats, NASM should be completely -portable. If not, we _really_ want to know about it. - -Porting Non-Issues ------------------- - -The following is _not_ a portability problem, although it looks like -one. - -- When compiling with some versions of DJGPP, you may get errors - such as `warning: ANSI C forbids braced-groups within - expressions'. This isn't NASM's fault - the problem seems to be - that DJGPP's definitions of the <ctype.h> macros include a - GNU-specific C extension. So when compiling using -ansi and - -pedantic, DJGPP complains about its own header files. It isn't a - problem anyway, since it still generates correct code. diff --git a/lcc/README b/lcc/README new file mode 100644 index 0000000..569b9be --- /dev/null +++ b/lcc/README @@ -0,0 +1,52 @@ +This directory contains the necessary files to port the C compiler +``LCC'' (available by FTP from sunsite.doc.ic.ac.uk in the directory +/computing/programming/languages/c/lcc) to compile for Linux (a.out +or ELF) by using NASM as a back-end code generator. + +This patch has been tested on lcc version 3.6. + +To install: + +- Copy `x86nasm.md' into the `src' directory of the lcc tree. + +- Copy either `lin-elf.c' or `lin-aout.c' into the `etc' directory. + +- If you're installing for a.out, edit `x86nasm.md' and change the + conditional after the comment reading "CHANGE THIS FOR a.out" in + the `defsymbol' function from `#if 0' to `#if 1'. + +- Make the following changes to `bind.c' in the `src' directory: + + - Near the top of the file, add a line that reads + extern Interface x86nasmIR; + + - In the `bindings' array, add the lines + "x86-nasm", &x86nasmIR, + "x86/nasm", &x86nasmIR, + (in sensible looking places...) + + A sample `bind.c' has been provided to show what the result of + this might look like. You might be able to get away with using it + directly... + +- Modify the lcc makefile to include rules for x86nasm.o: this will + have to be done in about three places. Just copy any line with + `x86' on it and modify it to read `x86nasm' everywhere. (Except + that in the list of object files that rcc is made up from, do + remember to ensure that every line but the last has a trailing + backslash...) + +- You may have to modify the contents of `lin-elf.c' or `lin-aout.c' + to reflect the true locations of files such as crt0.o, crt1.o, + ld-linux.so and so forth. If you don't know where to find these, + compile a short C program with `gcc -v' and see what command line + gcc feeds to `ld'. + +- You should now be able to build lcc, using `lin-elf.c' or + `lin-aout.c' as the system-dependent part of the `lcc' wrapper + program. + +- Symlink x86nasm.c into the `src' directory before attempting the + triple test, or the compile will fail. + +- Now it should pass the triple test, on either ELF or a.out. Voila! diff --git a/misc/README b/misc/README new file mode 100644 index 0000000..f39ba4d --- /dev/null +++ b/misc/README @@ -0,0 +1,2 @@ +There are various helpful bits and pieces for NASM, +including but not limited to Simon photograph =) @@ -13,7 +13,7 @@ #define NASM_MAJOR_VER 0 #define NASM_MINOR_VER 98 -#define NASM_VER "0.98.25alt" +#define NASM_VER "0.98.26" #ifndef NULL #define NULL 0 diff --git a/ndisasm.doc b/ndisasm.doc deleted file mode 100644 index 5b5374a..0000000 --- a/ndisasm.doc +++ /dev/null @@ -1,199 +0,0 @@ - The Netwide Disassembler, NDISASM - ================================= - -Introduction -============ - -The Netwide Disassembler is a small companion program to the Netwide -Assembler, NASM. It seemed a shame to have an x86 assembler, -complete with a full instruction table, and not make as much use of -it as possible, so here's a disassembler which shares the -instruction table (and some other bits of code) with NASM. - -The Netwide Disassembler does nothing except to produce -disassemblies of _binary_ source files. NDISASM does not have any -understanding of object file formats, like `objdump', and it will -not understand DOS .EXE files like `debug' will. It just -disassembles. - -Getting Started: Installation -============================= - -See `nasm.doc' for installation instructions. NDISASM, like NASM, -has a man page which you may want to put somewhere useful, if you -are on a Unix system. - -Running NDISASM -=============== - -To disassemble a file, you will typically use a command of the form - - ndisasm [-b16 | -b32] filename - -NDISASM can disassemble 16 bit code or 32 bit code equally easily, -provided of course that you remember to specify which it is to work -with. If no `-b' switch is present, NDISASM works in 16-bit mode by -default. The `-u' switch (for USE32) also invokes 32-bit mode. - -Two more command line options are `-r' which reports the version -number of NDISASM you are running, and `-h' which gives a short -summary of command line options. - -COM Files: Specifying an Origin -=============================== - -To disassemble a DOS .COM file correctly, a disassembler must assume -that the first instruction in the file is loaded at address 0x100, -rather than at zero. NDISASM, which assumes by default that any file -you give it is loaded at zero, will therefore need to be informed of -this. - -The `-o' option allows you to declare a different origin for the -file you are disassembling. Its argument may be expressed in any of -the NASM numeric formats: decimal by default, if it begins with `$' -or `0x' or ends in `H' it's hex, if it ends in `Q' it's octal, and -if it ends in `B' it's binary. - -Hence, to disassemble a .COM file: - - ndisasm -o100h filename.com - -will do the trick. - -Code Following Data: Synchronisation -==================================== - -Suppose you are disassembling a file which contains some data which -isn't machine code, and _then_ contains some machine code. NDISASM -will faithfully plough through the data section, producing machine -instructions wherever it can (although most of them will look -bizarre, and some may have unusual prefixes, e.g. `fs or -ax,0x240a'), and generating `db' instructions every so often if it's -totally stumped. Then it will reach the code section. - -Supposing NDISASM has just finished generating a strange machine -instruction from part of the data section, and its file position is -now one byte _before_ the beginning of the code section. It's -entirely possible that another spurious instruction will get -generated, starting with the final byte of the data section, and -then the correct first instruction in the code section will not be -seen because the starting point skipped over it. This isn't really -ideal. - -To avoid this, you can specify a `synchronisation' point, or indeed -as many synchronisation points as you like (although NDISASM can -only handle 8192 sync points internally). The definition of a sync -point is this: NDISASM guarantees to hit sync points exactly during -disassembly. If it is thinking about generating an instruction which -would cause it to jump over a sync point, it will discard that -instruction and output a `db' instead. So it _will_ start -disassembly exactly from the sync point, and so you _will_ see all -the instructions in your code section. - -Sync points are specified using the `-s' option: they are measured -in terms of the program origin, not the file position. So if you -want to synchronise after 32 bytes of a .COM file, you would have to -do - - ndisasm -o100h -s120h file.com - -rather than - - ndisasm -o100h -s20h file.com - -As stated above, you can specify multiple sync markers if you need -to, just by repeating the `-s' option. - -Mixed Code and Data: Automatic (Intelligent) Synchronisation -============================================================ - -Suppose you are disassembling the boot sector of a DOS floppy (maybe -it has a virus, and you need to understand the virus so that you -know what kinds of damage it might have done you). Typically, this -will contain a JMP instruction, then some data, then the rest of the -code. So there is a very good chance of NDISASM being misaligned -when the data ends and the code begins. Hence a sync point is -needed. - -On the other hand, why should you have to specify the sync point -manually? What you'd do in order to find where the sync point would -be, surely, would be to read the JMP instruction, and then to use -its target address as a sync point. So can NDISASM do that for you? - -The answer, of course, is yes: using either of the synonymous -switches `-a' (for automatic sync) or `-i' (for intelligent sync) -will enable auto-sync mode. Auto-sync mode automatically generates a -sync point for any forward-referring PC-relative jump or call -instruction that NDISASM encounters. (Since NDISASM is one-pass, if -it encounters a PC-relative jump whose target has already been -processed, there isn't much it can do about it...) - -Only PC-relative jumps are processed, since an absolute jump is -either through a register (in which case NDISASM doesn't know what -the register contains) or involves a segment address (in which case -the target code isn't in the same segment that NDISASM is working -in, and so the sync point can't be placed anywhere useful). - -For some kinds of file, this mechanism will automatically put sync -points in all the right places, and save you from having to place -any sync points manually. However, it should be stressed that -auto-sync mode is _not_ guaranteed to catch all the sync points, and -you may still have to place some manually. - -Auto-sync mode doesn't prevent you from declaring manual sync -points: it just adds automatically generated ones to the ones you -provide. It's perfectly feasible to specify `-i' _and_ some `-s' -options. - -Another caveat with auto-sync mode is that if, by some unpleasant -fluke, something in your data section should disassemble to a -PC-relative call or jump instruction, NDISASM may obediently place a -sync point in a totally random place, for example in the middle of -one of the instructions in your code section. So you may end up with -a wrong disassembly even if you use auto-sync. Again, there isn't -much I can do about this. If you have problems, you'll have to use -manual sync points, or use the `-k' option (documented below) to -suppress disassembly of the data area. - -Other Options -============= - -The `-e' option skips a header on the file, by ignoring the first N -bytes. This means that the header is _not_ counted towards the -disassembly offset: if you give `-e10 -o10', disassembly will start -at byte 10 in the file, and this will be given offset 10, not 20. - -The `-k' option is provided with two comma-separated numeric -arguments, the first of which is an assembly offset and the second -is a number of bytes to skip. This _will_ count the skipped bytes -towards the assembly offset: its use is to suppress disassembly of a -data section which wouldn't contain anything you wanted to see -anyway. - -Bugs and Improvements -===================== - -There are no known bugs. However, any you find, with patches if -possible, should be sent to <jules@dcs.warwick.ac.uk> or -<anakin@pobox.com>, and we'll try to fix them. Feel free to send -contributions and new features as well. - -Future plans include awareness of which processors certain -instructions will run on, and marking of instructions that are too -advanced for some processor (or are FPU instructions, or are -undocumented opcodes, or are privileged protected-mode instructions, -or whatever). - -That's All Folks! -================= - -I hope NDISASM is of some use to somebody. Including me. :-) - -I don't recommend taking NDISASM apart to see how an efficient -disassembler works, because as far as I know, it isn't an efficient -one anyway. You have been warned. - -Please feel free to send comments, suggestions, or chat to -<anakin@pobox.com>. As with NASM, no flames please. - -- Simon Tatham <anakin@pobox.com>, 21-Nov-96 diff --git a/proc32.ash b/proc32.ash deleted file mode 100644 index f513b73..0000000 --- a/proc32.ash +++ /dev/null @@ -1,441 +0,0 @@ -;--------=========xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx=========-------- -; -; Copyright (C) 1999 by Andrew Zabolotny -; Miscelaneous NASM macros that makes use of new preprocessor features -; -; This library is free software; you can redistribute it and/or -; modify it under the terms of the GNU Library General Public -; License as published by the Free Software Foundation; either -; version 2 of the License, or (at your option) any later version. -; -; This library is distributed in the hope that it will be useful, -; but WITHOUT ANY WARRANTY; without even the implied warranty of -; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -; Library General Public License for more details. -; -; You should have received a copy of the GNU Library General Public -; License along with this library; if not, write to the Free -; Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -; -;--------=========xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx=========-------- - -; The macros in this file provides support for writing 32-bit C-callable -; NASM routines. For a short description of every macros see the -; corresponding comment before every one. Simple usage example: -; -; proc sin,1 -; targ %$angle -; fld %$angle -; fsin -; endproc sin - -%ifndef __PROC32_ASH__ -%define __PROC32_ASH__ - -[WARNING -macro-selfref] - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Mangle a name to be compatible with the C compiler -; Arguments: -; The name -; Example: -; cname (my_func) -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%ifdef EXTERNC_UNDERSCORE - %define cname(x) _ %+ x -%else - %define cname(x) x -%endif - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Import an external C procedure definition -; Arguments: -; The name of external C procedure -; Example: -; cextern printf -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro cextern 1 - %xdefine %1 cname(%1) - %ifidni __OUTPUT_FORMAT__,obj - extern %1:wrt FLAT - %else - extern %1 - %endif -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Export an C procedure definition -; Arguments: -; The name of C procedure -; Example: -; cglobal my_printf -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro cglobal 1 - %xdefine %1 cname(%1) - global %1 -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Misc macros to deal with PIC shared libraries -; Comment: -; Note that we have a different syntax for working with and without -; PIC shared libraries. In a PIC environment we should load first -; the address of the variable into a register and then work through -; that address, i.e: mov eax,myvar; mov [eax],1 -; In a non-PIC environment we should directly write: mov myvar,1 -; Example: -; extvar myvar -; GetGOT -; %ifdef PIC -; mov ebx,myvar ; get offset of myvar into ebx -; %else -; lea ebx,myvar -; %endif -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%ifdef PIC - cextern _GLOBAL_OFFSET_TABLE_ - %macro GetGOT 0 - %ifdef .$proc.stkofs - %assign .$proc.stkofs .$proc.stkofs+4 - %endif - call %$Get_GOT - %$Get_GOT: - pop ebx - add ebx,_GLOBAL_OFFSET_TABLE_ + $$ - %$Get_GOT wrt ..gotpc - %endmacro - %macro extvar 1 - cextern %1 - %xdefine %1 [ebx+%1 wrt ..got] - %endmacro -%else - %define GetGOT - %macro extvar 1 - cextern %1 - %endmacro -%endif - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Begin a procedure definition -; For performance reasons we don't use stack frame pointer EBP, -; instead we're using the [esp+xx] addressing. Because of this -; you should be careful when you work with stack pointer. -; The push/pop instructions are macros that are defined to -; deal correctly with these issues. -; Arguments: -; First argument - the procedure name -; Second optional argument - the number of bytes for local variables -; The following arguments could specify the registers that should be -; pushed at beginning of procedure and popped before exiting -; Example: -; proc MyTestProc -; proc MyTestProc,4,ebx,esi,edi -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro proc 1-3+ 0 - cglobal %1 - %push %1 - align 16 -%1: - %xdefine %$proc.name %1 - ; total size of local arguments - %assign %$proc.locsize (%2+3) & 0xFFFC - ; offset from esp to argument - %assign %$proc.argofs 4+%$proc.locsize - ; additional offset to args (tracks push/pops) - %assign .$proc.stkofs 0 - ; offset from esp to local arguments - %assign %$proc.locofs 0 - ; Now push the registers that we should save - %define %$proc.save %3 - %if %$proc.locsize != 0 - sub esp,%$proc.locsize - %endif - push %$proc.save -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Declare an argument passed on stack -; This macro defines two additional macros: -; first (with the name given by first argument) - [esp+xx] -; second (with a underscore appended to first argument) - esp+xx -; Arguments: -; First argument defines the procedure argument name -; Second optional parameter defines the size of the argument -; Default value is 4 (a double word) -; Example: -; arg .my_float -; arg .my_double,8 -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro arg 1-2 4 - %ifndef %$proc.argofs - %error "`arg' not in a proc context" - %else - ; Trick: temporary undefine .$proc.stkofs so that it won't be expanded - %assign %%. .$proc.stkofs - %undef .$proc.stkofs - %xdefine %{1}_ esp+%$proc.argofs+.$proc.stkofs - %xdefine %1 [esp+%$proc.argofs+.$proc.stkofs] - %assign .$proc.stkofs %%. - %assign %$proc.argofs %2+%$proc.argofs - %endif -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Declare an local variable -; first (with the name given by first argument) - [esp+xx] -; second (with a slash prefixing the first argument) - esp+xx -; Arguments: -; First argument defines the procedure argument name -; Second optional parameter defines the size of the argument -; Default value is 4 (a double word) -; Example: -; loc .int_value -; loc .double_value,8 -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro loc 1-2 4 - %ifndef %$proc.locofs - %error "`loc' not in a proc context" - %elif %$proc.locofs + %2 > %$proc.locsize - %error "local stack space exceeded" - %else - %assign %%. .$proc.stkofs - %undef .$proc.stkofs - %xdefine %{1}_ esp+%$proc.locofs+.$proc.stkofs - %xdefine %1 [esp+%$proc.locofs+.$proc.stkofs] - %assign .$proc.stkofs %%. - %assign %$proc.locofs %$proc.locofs+%2 - %endif -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Get the type of given size into context-local variable %$type -; Arguments: -; Size of type we want (1,2,4,8 or 10) -; Example: -; type 4 ; gives "dword" -; type 10 ; gives "tword" -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro type 1 - %if %1 = 1 - %define %$type byte - %elif %1 = 2 - %define %$type word - %elif %1 = 4 - %define %$type dword - %elif %1 = 8 - %define %$type qword - %elif %1 = 10 - %define %$type tword - %else - %define %$. %1 - %error "unknown type for argument size %$." - %endif -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Same as `arg' but prepends "word", "dword" etc (typed arg) -; first (with the name given by first argument) - dword [esp+xx] -; second (with a slash prefixing the first argument) - esp+xx -; Arguments: -; Same as for `arg' -; Example: -; targ .my_float ; .my_float is now "dword [esp+xxx]" -; targ .my_double,8 ; .my_double is now "qword [esp+xxx]" -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro targ 1-2 4 - %ifndef %$proc.argofs - %error "`targ' not in a proc context" - %else - arg %1,%2 - type %2 - %assign %%. .$proc.stkofs - %undef .$proc.stkofs - %xdefine %1 %$type %1 - %assign .$proc.stkofs %%. - %endif -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Same as `loc' but prepends "word", "dword" etc (typed loc) -; first (with the name given by first argument) - dword [esp+xx] -; second (with a slash prefixing the first argument) - esp+xx -; Arguments: -; Same as for `loc' -; Example: -; tloc int_value -; tloc double_value,8 -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro tloc 1-2 4 - %ifndef %$proc.locofs - %error "`tloc' not in a proc context" - %else - loc %1,%2 - type %2 - %assign %%. .$proc.stkofs - %undef .$proc.stkofs - %xdefine %1 %$type %1 - %assign .$proc.stkofs %%. - %endif -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Finish a procedure -; Gives an error if proc/endproc pairs mismatch -; Defines an label called __end_(procedure name) -; which is useful for calculating function size -; Arguments: -; (optional) The name of procedure -; Example: -; endproc MyTestProc -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%push tmp ; trick: define a dummy context to avoid error in next line -%macro endproc 0-1 %$proc.name - %ifndef %$proc.argofs - %error "`endproc' not in a proc context" - %elifnidn %$proc.name,%1 - %define %$. %1 - %error "endproc names mismatch: expected `%$proc.name'" - %error "but got `%$.' instead" - %elif %$proc.locofs < %$proc.locsize - %error "unused local space declared (used %$proc.locofs, requested %$proc.locsize)" - %else -%$exit: - ; Now pop the registers that we should restore on exit - pop %$proc.save - %if %$proc.locsize != 0 - add esp,%$proc.locsize - %endif - ret -__end_%1: - %pop - %endif -%endmacro -%pop - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; A replacement for "push" for use within procedures -; Arguments: -; any number of registers which will be push'ed successively -; Example: -; push eax,ebx,ecx,edx -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro push 0-* -; dummy comment to avoid problems with "push" on the same line with a label - %rep %0 - push %1 - %rotate 1 - %assign .$proc.stkofs .$proc.stkofs+4 - %endrep -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; A replacement for "pop" for use within procedures -; Arguments: -; any number of registers which will be pop'ed in reverse order -; Example: -; pop eax,ebx,ecx,edx -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro pop 0-* -; dummy comment to avoid problems with "pop" on the same line with a label - %rep %0 - %rotate -1 - pop %1 - %assign .$proc.stkofs .$proc.stkofs-4 - %endrep -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Replacements for "pushfd" and "popfd" that takes care of esp -; Example: -; pushfd -; popfd -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro pushfd 0 - pushfd - %assign .$proc.stkofs .$proc.stkofs+4 -%endmacro -%macro popfd 0 - popfd - %assign .$proc.stkofs .$proc.stkofs-4 -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Exit from current procedure (optionally on given condition) -; Arguments: -; Either none or a condition code -; Example: -; exit -; exit nz -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro exit 0-1 mp - j%1 near %$exit -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; start an conditional branch -; Arguments: -; A condition code -; second (optional) argument - "short" (by default - "near") -; Example: -; if nz -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro if 1-2 near -; dummy comment to avoid problems with "if" on the same line with a label - %push if - j%-1 %2 %$elseif -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; define the "else" branch of a conditional statement -; Arguments: -; optionaly: "short" if jmp to endif is less than 128 bytes away -; Example: -; else -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro else 0-1 - %ifnctx if - %error "`else' without matching `if'" - %else - jmp %1 %$endif -%$elseif: - %define %$elseif_defined - %endif -%endmacro - -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -; Summary: -; Finish am conditional statement -; Arguments: -; none -; Example: -; endif -;-----======xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx======----- -%macro endif 0 - %ifnctx if - %error "`endif' without matching `if'" - %else - %ifndef %$elseif_defined -%$elseif: - %endif -%$endif: - %pop - %endif -%endmacro - -%endif ; __PROC32_ASH__ diff --git a/rdoff/Changes b/rdoff/Changes deleted file mode 100644 index 34163a9..0000000 --- a/rdoff/Changes +++ /dev/null @@ -1,63 +0,0 @@ -Differences between RDOFF versions 1 & 2 -======================================== - -This document is designed primarily for people maintaining code which -uses RDOFF version 1, and would like to upgrade that code to work -with version 2. - -The main changes are summarised here: - -Overall format -============== - -The overall format has changed somewhat since version 1, in order -to make RDOFF more flexible. After the file type identifier (which -has been changed to 'RDOFF2', obviously), there is now a 4 byte -integer describing the length of the object module. This allows -multiple objects to be concatenated, while the loader can easily -build an index of the locations of each object. This isn't as -pointless as it sounds; I'm using RDOFF in a microkernel operating -system, and this is the ideal way of loading multiple driver modules -at boot time. - -There are also no longer a fixed number of segments; instead there -is a list of segments, immediately following the header. -Each segment is preceded by a 10 byte header giving information about -that segment. This header has the following format: - -Length Description -2 Type -2 Number -2 Reserved -4 Length - -'Type' is a number describing what sort of segment it is (eg text, data, -comment, debug info). See 'rdoff2.txt' for a list of the segment types. -'Number' is the number used to refer to the segment in the header records. -Not all segments will be loaded; it is only intended that one code -and one data segment will be loaded into memory. It is possible, however, -for a loaded segment to contain a reference to an unloaded segment. -This is an error, and should be flagged at load time. Or maybe you should -load the segment... its up to you, really. - -The segment's data immediately follows the end of the segment header. - -HEADER RECORDS -============== - -All of the header records have changed in this version, but not -substantially. Each record type has had a content-length code added, -a single byte immediately following the type byte. This contains the -length of the rest of the record (excluding the type and length bytes, -but including the terminating nulls on any strings in the record). - -There are two new record types, Segment Relocation (6), and FAR import (7). -The record formats are identical to Relocation (1) and import (2). They are -only of real use on systems using segmented architectures. Systems using -a flat model should treat FAR import (7) exactly the same as an import (2), -and should either flag segment relocation as an error, or attempt to figure -out whether it is a reference to a code or data symbol, and set the value -referenced to the according selector value. I am opting for the former -approach, and would recommend that others working on 32 bit flat systems -do the same. - diff --git a/rdoff/Mkfiles/Makefile.dj b/rdoff/Mkfiles/Makefile.dj new file mode 100644 index 0000000..2099739 --- /dev/null +++ b/rdoff/Mkfiles/Makefile.dj @@ -0,0 +1,75 @@ +# Generated automatically from Makefile.in by configure. +# +# Auto-configuring Makefile for RDOFF object file utils; part of the +# Netwide Assembler +# +# The Netwide Assembler is copyright (C) 1996 Simon Tatham and +# Julian Hall. All rights reserved. The software is +# redistributable under the licence given in the file "Licence" +# distributed in the NASM archive. + +# You may need to adjust these values. + +prefix = /djgpp +CC = gcc -s +CFLAGS = -O2 -I.. + +# You _shouldn't_ need to adjust anything below this line. + +exec_prefix = ${prefix} +bindir = ${exec_prefix}/bin +mandir = ${prefix}/man + +INSTALL = /usr/bin/install -c +INSTALL_PROGRAM = ${INSTALL} +INSTALL_DATA = ${INSTALL} -m 644 +LN_S = ln -s + +LDRDFLIBS = rdoff.o ../nasmlib.o symtab.o hash.o collectn.o rdlib.o segtab.o +RDXLIBS = rdoff.o rdfload.o symtab.o hash.o collectn.o + +.c.o: + $(CC) -c $(CFLAGS) $*.c + +all: rdfdump ldrdf rdx rdflib rdf2bin rdf2com + +rdfdump: rdfdump.o + $(CC) -o rdfdump rdfdump.o + +ldrdf: ldrdf.o $(LDRDFLIBS) + $(CC) -o ldrdf ldrdf.o $(LDRDFLIBS) +rdx: rdx.o $(RDXLIBS) + $(CC) -o rdx rdx.o $(RDXLIBS) +rdflib: rdflib.o + $(CC) -o rdflib rdflib.o +rdf2bin: rdf2bin.o $(RDXLIBS) nasmlib.o + $(CC) -o rdf2bin rdf2bin.o $(RDXLIBS) nasmlib.o +rdf2com: + $(LN_S) rdf2bin rdf2com + +rdf2bin.o: rdf2bin.c +rdfdump.o: rdfdump.c +rdoff.o: rdoff.c rdoff.h +ldrdf.o: ldrdf.c rdoff.h ../nasmlib.h symtab.h collectn.h rdlib.h +symtab.o: symtab.c symtab.h hash.h +collectn.o: collectn.c collectn.h +rdx.o: rdx.c rdoff.h rdfload.h symtab.h +rdfload.o: rdfload.c rdfload.h rdoff.h collectn.h symtab.h +rdlib.o: rdlib.c rdlib.h +rdflib.o: rdflib.c +hash.o: hash.c hash.h +segtab.o: segtab.c segtab.h + +nasmlib.o: ../nasmlib.c ../nasmlib.h ../names.c ../nasm.h + $(CC) -c $(CFLAGS) ../nasmlib.c + +clean: + rm -f *.o rdfdump ldrdf rdx rdflib rdf2bin rdf2com + +install: rdfdump ldrdf rdx rdflib rdf2bin rdf2com + $(INSTALL_PROGRAM) rdfdump $(bindir)/rdfdump + $(INSTALL_PROGRAM) ldrdf $(bindir)/ldrdf + $(INSTALL_PROGRAM) rdx $(bindir)/rdx + $(INSTALL_PROGRAM) rdflib $(bindir)/rdflib + $(INSTALL_PROGRAM) rdf2bin $(bindir)/rdf2bin + cd $(bindir); $(LN_S) rdf2bin rdf2com diff --git a/rdoff/Mkfiles/Makefile.emx b/rdoff/Mkfiles/Makefile.emx new file mode 100644 index 0000000..fbaa934 --- /dev/null +++ b/rdoff/Mkfiles/Makefile.emx @@ -0,0 +1,76 @@ +# Generated automatically from Makefile.in by configure. +# $Id$ +# +# Auto-configuring Makefile for RDOFF object file utils; part of the +# Netwide Assembler +# +# The Netwide Assembler is copyright (C) 1996 Simon Tatham and +# Julian Hall. All rights reserved. The software is +# redistributable under the licence given in the file "Licence" +# distributed in the NASM archive. + +top_srcdir = .. +srcdir = . +prefix = /usr/local +exec_prefix = ${prefix} +bindir = ${exec_prefix}/bin +mandir = ${prefix}/man + +CC = gcc +CFLAGS = -s -Zomf -O2 -fomit-frame-pointer -Wall -ansi -pedantic -I$(srcdir) -I$(top_srcdir) +LDFLAGS = -s -Zomf -Zexe -Zcrtdll +LIBS = -lgcc + +INSTALL = .././install-sh -c +INSTALL_PROGRAM = ${INSTALL} +INSTALL_DATA = ${INSTALL} -m 644 + +LDRDFLIBS = rdoff.o nasmlib.o symtab.o collectn.o rdlib.o segtab.o hash.o +RDXLIBS = rdoff.o rdfload.o symtab.o collectn.o hash.o + +.c.o: + $(CC) -c $(CFLAGS) -o $@ $< + +all: rdfdump ldrdf rdx rdflib rdf2bin + +rdfdump: rdfdump.o + $(CC) $(LDFLAGS) -o rdfdump rdfdump.o $(LIBS) +ldrdf: ldrdf.o $(LDRDFLIBS) + $(CC) $(LDFLAGS) -o ldrdf ldrdf.o $(LDRDFLIBS) $(LIBS) +rdx: rdx.o $(RDXLIBS) + $(CC) $(LDFLAGS) -o rdx rdx.o $(RDXLIBS) $(LIBS) +rdflib: rdflib.o + $(CC) $(LDFLAGS) -o rdflib rdflib.o $(LIBS) +rdf2bin: rdf2bin.o $(RDXLIBS) nasmlib.o + $(CC) $(LDFLAGS) -o rdf2bin rdf2bin.o $(RDXLIBS) nasmlib.o $(LIBS) + +rdf2bin.o: rdf2bin.c +rdfdump.o: rdfdump.c +rdoff.o: rdoff.c rdoff.h +ldrdf.o: ldrdf.c rdoff.h $(top_srcdir)/nasmlib.h symtab.h collectn.h rdlib.h +symtab.o: symtab.c symtab.h +collectn.o: collectn.c collectn.h +rdx.o: rdx.c rdoff.h rdfload.h symtab.h +rdfload.o: rdfload.c rdfload.h rdoff.h collectn.h symtab.h +rdlib.o: rdlib.c rdlib.h +rdflib.o: rdflib.c +segtab.o: segtab.c + +nasmlib.o: $(top_srcdir)/nasmlib.c + $(CC) -c $(CFLAGS) -o $@ $(top_srcdir)/nasmlib.c + +clean: + rm -f *.o rdfdump ldrdf rdx rdflib rdf2bin rdf2com + +spotless: clean + rm -f Makefile + +distclean: spotless + +install: rdfdump ldrdf rdx rdflib rdf2bin rdf2com + $(INSTALL_PROGRAM) rdfdump $(INSTALLROOT)$(bindir)/rdfdump + $(INSTALL_PROGRAM) ldrdf $(INSTALLROOT)$(bindir)/ldrdf + $(INSTALL_PROGRAM) rdx $(INSTALLROOT)$(bindir)/rdx + $(INSTALL_PROGRAM) rdflib $(INSTALLROOT)$(bindir)/rdflib + $(INSTALL_PROGRAM) rdf2bin $(INSTALLROOT)$(bindir)/rdf2bin + cd $(INSTALLROOT)$(bindir) && rm -f rdf2com && $(LN_S) rdf2bin rdf2com diff --git a/rdoff/Mkfiles/Makefile.sc b/rdoff/Mkfiles/Makefile.sc new file mode 100644 index 0000000..7b45fe7 --- /dev/null +++ b/rdoff/Mkfiles/Makefile.sc @@ -0,0 +1,56 @@ +# Makefile for RDOFF object file utils; part of the Netwide Assembler +# +# The Netwide Assembler is copyright (C) 1996 Simon Tatham and +# Julian Hall. All rights reserved. The software is +# redistributable under the licence given in the file "Licence" +# distributed in the NASM archive. +# +# This Makefile is designed for use under Unix (probably fairly +# portably). + +CC = sc +CCFLAGS = -I..\ -c -a1 -mn -Nc -w2 -w7 -o+time -5 +LINK = link +LINKFLAGS = /noi /exet:NT /su:console + +OBJ=obj +EXE=.exe + +NASMLIB = ..\nasmlib.$(OBJ) +NASMLIB_H = ..\nasmlib.h +LDRDFLIBS = rdoff.$(OBJ) $(NASMLIB) symtab.$(OBJ) collectn.$(OBJ) rdlib.$(OBJ) +RDXLIBS = rdoff.$(OBJ) rdfload.$(OBJ) symtab.$(OBJ) collectn.$(OBJ) + +.c.$(OBJ): + $(CC) $(CCFLAGS) $*.c + +all : rdfdump$(EXE) ldrdf$(EXE) rdx$(EXE) rdflib$(EXE) rdf2bin$(EXE) rdf2com$(EXE) + +rdfdump$(EXE) : rdfdump.$(OBJ) + $(LINK) $(LINKFLAGS) rdfdump.$(OBJ), rdfdump$(EXE); +ldrdf$(EXE) : ldrdf.$(OBJ) $(LDRDFLIBS) + $(LINK) $(LINKFLAGS) ldrdf.$(OBJ) $(LDRDFLIBS), ldrdf$(EXE); +rdx$(EXE) : rdx.$(OBJ) $(RDXLIBS) + $(LINK) $(LINKFLAGS) rdx.$(OBJ) $(RDXLIBS), rdx$(EXE); +rdflib$(EXE) : rdflib.$(OBJ) + $(LINK) $(LINKFLAGS) rdflib.$(OBJ), rdflib$(EXE); +rdf2bin$(EXE) : rdf2bin.$(OBJ) $(RDXLIBS) $(NASMLIB) + $(LINK) $(LINKFLAGS) rdf2bin.$(OBJ) $(RDXLIBS) $(NASMLIB), rdf2bin$(EXE); +rdf2com$(EXE) : rdf2bin$(EXE) + copy rdf2bin$(EXE) rdf2com$(EXE) + +rdf2bin.$(OBJ) : rdf2bin.c +rdfdump.$(OBJ) : rdfdump.c +rdoff.$(OBJ) : rdoff.c rdoff.h +ldrdf.$(OBJ) : ldrdf.c rdoff.h $(NASMLIB_H) symtab.h collectn.h rdlib.h +symtab.$(OBJ) : symtab.c symtab.h +collectn.$(OBJ) : collectn.c collectn.h +rdx.$(OBJ) : rdx.c rdoff.h rdfload.h symtab.h +rdfload.$(OBJ) : rdfload.c rdfload.h rdoff.h collectn.h symtab.h +rdlib.$(OBJ) : rdlib.c rdlib.h +rdflib.$(OBJ) : rdflib.c + +clean : + del *.$(OBJ) rdfdump$(EXE) ldrdf$(EXE) rdx$(EXE) rdflib$(EXE) rdf2bin$(EXE) + + diff --git a/rdoff/Mkfiles/Makefile.unx b/rdoff/Mkfiles/Makefile.unx new file mode 100644 index 0000000..89d439f --- /dev/null +++ b/rdoff/Mkfiles/Makefile.unx @@ -0,0 +1,75 @@ +# Generated automatically from Makefile.in by configure. +# +# Auto-configuring Makefile for RDOFF object file utils; part of the +# Netwide Assembler +# +# The Netwide Assembler is copyright (C) 1996 Simon Tatham and +# Julian Hall. All rights reserved. The software is +# redistributable under the licence given in the file "Licence" +# distributed in the NASM archive. + +# You may need to adjust these values. + +prefix = /usr/local +CC = cc +CFLAGS = -O -I.. + +# You _shouldn't_ need to adjust anything below this line. + +exec_prefix = ${prefix} +bindir = ${exec_prefix}/bin +mandir = ${prefix}/man + +INSTALL = /usr/bin/install -c +INSTALL_PROGRAM = ${INSTALL} +INSTALL_DATA = ${INSTALL} -m 644 +LN_S = ln -s + +LDRDFLIBS = rdoff.o ../nasmlib.o symtab.o hash.o collectn.o rdlib.o segtab.o +RDXLIBS = rdoff.o rdfload.o symtab.o hash.o collectn.o + +.c.o: + $(CC) -c $(CFLAGS) $*.c + +all: rdfdump ldrdf rdx rdflib rdf2bin rdf2com + +rdfdump: rdfdump.o + $(CC) -o rdfdump rdfdump.o + +ldrdf: ldrdf.o $(LDRDFLIBS) + $(CC) -o ldrdf ldrdf.o $(LDRDFLIBS) +rdx: rdx.o $(RDXLIBS) + $(CC) -o rdx rdx.o $(RDXLIBS) +rdflib: rdflib.o + $(CC) -o rdflib rdflib.o +rdf2bin: rdf2bin.o $(RDXLIBS) nasmlib.o + $(CC) -o rdf2bin rdf2bin.o $(RDXLIBS) nasmlib.o +rdf2com: + $(LN_S) rdf2bin rdf2com + +rdf2bin.o: rdf2bin.c +rdfdump.o: rdfdump.c +rdoff.o: rdoff.c rdoff.h +ldrdf.o: ldrdf.c rdoff.h ../nasmlib.h symtab.h collectn.h rdlib.h +symtab.o: symtab.c symtab.h hash.h +collectn.o: collectn.c collectn.h +rdx.o: rdx.c rdoff.h rdfload.h symtab.h +rdfload.o: rdfload.c rdfload.h rdoff.h collectn.h symtab.h +rdlib.o: rdlib.c rdlib.h +rdflib.o: rdflib.c +hash.o: hash.c hash.h +segtab.o: segtab.c segtab.h + +nasmlib.o: ../nasmlib.c ../nasmlib.h ../names.c ../nasm.h + $(CC) -c $(CFLAGS) ../nasmlib.c + +clean: + rm -f *.o rdfdump ldrdf rdx rdflib rdf2bin rdf2com + +install: rdfdump ldrdf rdx rdflib rdf2bin rdf2com + $(INSTALL_PROGRAM) rdfdump $(bindir)/rdfdump + $(INSTALL_PROGRAM) ldrdf $(bindir)/ldrdf + $(INSTALL_PROGRAM) rdx $(bindir)/rdx + $(INSTALL_PROGRAM) rdflib $(bindir)/rdflib + $(INSTALL_PROGRAM) rdf2bin $(bindir)/rdf2bin + cd $(bindir); $(LN_S) rdf2bin rdf2com diff --git a/rdoff/Mkfiles/README b/rdoff/Mkfiles/README new file mode 100644 index 0000000..7e68499 --- /dev/null +++ b/rdoff/Mkfiles/README @@ -0,0 +1,4 @@ +These are pre-created Makefiles for various platforms, use them if +GNU autoconf/automake packages are not supported on your system. + +Copy appropriate Makefile to ../Makefile and run make. diff --git a/rdoff/ldrdf1.c b/rdoff/ldrdf1.c deleted file mode 100644 index 9e4a215..0000000 --- a/rdoff/ldrdf1.c +++ /dev/null @@ -1,728 +0,0 @@ -/* ldrdf.c RDOFF Object File linker/loader main program - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - */ - -/* TODO: Make the system skip a module (other than the first) if none - * of the other specified modules contain a reference to it. - * May require the system to make an extra pass of the modules to be - * loaded eliminating those that aren't required. - * - * Support all the existing documented options... - * - * Support libaries (.a files - requires a 'ranlib' type utility) - * (I think I've got this working, so I've upped the version) - * - * -s option to strip resolved symbols from exports. (Could make this an - * external utility) - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "rdoff.h" -#include "nasmlib.h" -#include "symtab.h" -#include "collectn.h" -#include "rdlib.h" - -#define LDRDF_VERSION "0.30" - -/* global variables - those to set options: */ - -int verbose = 0; /* reflects setting of command line switch */ -int align = 16; -int errors = 0; /* set by functions to cause halt after current - stage of processing */ - -/* the linked list of modules that must be loaded & linked */ - -struct modulenode { - rdffile f; /* the file */ - long coderel; /* module's code relocation factor */ - long datarel; /* module's data relocation factor */ - long bssrel; /* module's bss data reloc. factor */ - void * header; /* header location, if loaded */ - char * name; /* filename */ - struct modulenode *next; -}; - -#define newstr(str) strcpy(malloc(strlen(str) + 1),str) -#define newstrcat(s1,s2) strcat(strcpy(malloc(strlen(s1)+strlen(s2)+1),s1),s2) - - -struct modulenode *modules = NULL,*lastmodule = NULL; - -/* the linked list of libraries to be searched for missing imported - symbols */ - -struct librarynode * libraries = NULL, * lastlib = NULL; - -void *symtab; /* The symbol table */ - -rdf_headerbuf * newheader ; /* New header to be written to output */ - -/* loadmodule - find the characteristics of a module and add it to the - * list of those being linked together */ - -void loadmodule(char *filename) -{ - struct modulenode *prev; - if (! modules) { - modules = malloc(sizeof(struct modulenode)); - lastmodule = modules; - prev = NULL; - } - else { - lastmodule->next = malloc(sizeof(struct modulenode)); - prev = lastmodule; - lastmodule = lastmodule->next; - } - - if (! lastmodule) { - fputs("ldrdf: not enough memory\n",stderr); - exit(1); - } - - if (rdfopen(&lastmodule->f,filename)) { - rdfperror("ldrdf",filename); - exit(1); - } - - lastmodule->header = NULL; /* header hasn't been loaded */ - lastmodule->name = filename; - lastmodule->next = NULL; - - if (prev) { - lastmodule->coderel = prev->coderel + prev->f.code_len; - if (lastmodule->coderel % align != 0) - lastmodule->coderel += align - (lastmodule->coderel % align); - lastmodule->datarel = prev->datarel + prev->f.data_len; - if (lastmodule->datarel % align != 0) - lastmodule->datarel += align - (lastmodule->datarel % align); - } - else { - lastmodule->coderel = 0; - lastmodule->datarel = 0; - } - - if (verbose) - printf("%s code = %08lx (+%04lx), data = %08lx (+%04lx)\n",filename, - lastmodule->coderel,lastmodule->f.code_len, - lastmodule->datarel,lastmodule->f.data_len); - - lastmodule->header = malloc(lastmodule->f.header_len); - if (!lastmodule->header) { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - - if (rdfloadseg(&lastmodule->f,RDOFF_HEADER,lastmodule->header)) - { - rdfperror("ldrdf",filename); - exit(1); - } -} - -/* load_library add a library to list of libraries to search - * for undefined symbols - */ - -void load_library(char * name) -{ - if (verbose) - printf("adding library %s to search path\n",name); - - if (! lastlib) { - lastlib = libraries = malloc(sizeof(struct librarynode)); - } - else - { - lastlib->next = malloc(sizeof(struct librarynode)); - lastlib = lastlib->next; - } - - if (! lastlib) { - fprintf(stderr, "ldrdf: out of memory\n"); - exit(1); - } - strcpy (lastlib->name = malloc (1+strlen(name)), name); - lastlib->fp = NULL; - lastlib->referenced = 0; - lastlib->next = NULL; -} - - -/* build_symbols() step through each module's header, and locate - * exported symbols, placing them in a global table - */ - -long bsslength; - -void mod_addsymbols(struct modulenode * mod) -{ - rdfheaderrec *r; - symtabEnt e; - long cbBss; - - mod->bssrel = bsslength; - cbBss = 0; - rdfheaderrewind(&mod->f); - while ((r = rdfgetheaderrec(&mod->f))) - { - - if (r->type == 5) /* Allocate BSS */ - cbBss += r->b.amount; - - if (r->type != 3) continue; /* ignore all but export recs */ - - e.segment = r->e.segment; - e.offset = r->e.offset + - (e.segment == 0 ? mod->coderel : /* 0 -> code */ - e.segment == 1 ? mod->datarel : /* 1 -> data */ - mod->bssrel) ; /* 2 -> bss */ - - e.flags = 0; - e.name = malloc(strlen(r->e.label) + 1); - if (! e.name) - { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - strcpy(e.name,r->e.label); - symtabInsert(symtab,&e); - } - bsslength += cbBss; -} - -void build_symbols() -{ - struct modulenode *mod; - - if (verbose) printf("building global symbol table:\n"); - newheader = rdfnewheader(); - - symtab = symtabNew(); - bsslength = 0; /* keep track of location of BSS symbols */ - - for (mod = modules; mod; mod = mod->next) - { - mod_addsymbols( mod ); - } - if (verbose) - { - symtabDump(symtab,stdout); - printf("BSS length = %ld bytes\n\n",bsslength); - } -} - - -/* scan_libraries() search through headers of modules for undefined - * symbols, and scan libraries for those symbols, - * adding library modules found to list of modules - * to load. */ - -void scan_libraries(void) -{ - struct modulenode * mod, * nm; - struct librarynode * lib; - rdfheaderrec * r; - int found; - char * tmp; - - if (verbose) printf("Scanning libraries for unresolved symbols...\n"); - - mod = modules; - - while (mod) - { - rdfheaderrewind(&mod->f); - - while ((r = rdfgetheaderrec(&mod->f))) - { - if (r->type != 2) continue; /* not an import record */ - if ( symtabFind (symtab,r->i.label) ) - continue; /* symbol already defined */ - - /* okay, we have an undefined symbol... step through - the libraries now */ - if (verbose >= 2) { - printf("undefined symbol '%s'...",r->i.label); - fflush(stdout); - } - - lib = libraries; - found = 0; - - tmp = newstr(r->i.label); - while (! found && lib) - { - /* move this to an outer loop...! */ - nm = malloc(sizeof(struct modulenode)); - - if (rdl_searchlib(lib,tmp,&nm->f)) - { /* found a module in the library */ - - /* create a modulenode for it */ - - if (! nm) { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - - nm->name = newstrcat(lib->name,nm->f.name); - if (verbose >= 2) printf("found in '%s'\n",nm->name); - - nm->coderel = lastmodule->coderel + lastmodule->f.code_len; - if (nm->coderel % align != 0) - nm->coderel += align - (nm->coderel % align); - - nm->datarel = lastmodule->datarel + lastmodule->f.data_len; - if (nm->datarel % align != 0) - nm->datarel += align - (nm->datarel % align); - - nm->header = malloc(nm->f.header_len); - if (! nm->header) - { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - - if (rdfloadseg(&nm->f,RDOFF_HEADER,nm->header)) - { - rdfperror("ldrdf",nm->name); - exit(1); - } - - nm->next = NULL; - found = 1; - lastmodule->next = nm; - lastmodule = nm; - - if (verbose) - printf("%s code = %08lx (+%04lx), data = %08lx " - "(+%04lx)\n",lastmodule->name, - lastmodule->coderel,lastmodule->f.code_len, - lastmodule->datarel,lastmodule->f.data_len); - - /* add the module's info to the symbol table */ - mod_addsymbols(nm); - } - else - { - if (rdl_error) { - rdl_perror("ldrdf",lib->name); - exit(1); - } - free(nm); - } - lib = lib->next; - } - free(tmp); - if (!found && verbose >= 2) printf("not found\n"); - } - mod = mod->next; - } -} - -/* load_segments() allocates memory for & loads the code & data segs - * from the RDF modules - */ - -char *text,*data; -long textlength,datalength; - -void load_segments(void) -{ - struct modulenode *mod; - - if (!modules) { - fprintf(stderr,"ldrdf: nothing to do\n"); - exit(0); - } - if (!lastmodule) { - fprintf(stderr,"ldrdf: panic: module list exists, but lastmodule=NULL\n"); - exit(3); - } - - if (verbose) - printf("loading modules into memory\n"); - - /* The following stops 16 bit DOS from crashing whilst attempting to - work using segments > 64K */ - if (sizeof(int) == 2) { /* expect a 'code has no effect' warning on 32 bit - platforms... */ - if (lastmodule->coderel + lastmodule->f.code_len > 65535 || - lastmodule->datarel + lastmodule->f.data_len > 65535) { - fprintf(stderr,"ldrdf: segment length has exceeded 64K; use a 32 bit " - "version.\nldrdf: code size = %05lx, data size = %05lx\n", - lastmodule->coderel + lastmodule->f.code_len, - lastmodule->datarel + lastmodule->f.data_len); - exit(1); - } - } - - text = malloc(textlength = lastmodule->coderel + lastmodule->f.code_len); - data = malloc(datalength = lastmodule->datarel + lastmodule->f.data_len); - - if (!text || !data) { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - - mod = modules; - while (mod) { /* load the segments for each module */ - if (verbose >= 2) printf(" loading %s\n",mod->name); - if (rdfloadseg(&mod->f,RDOFF_CODE,&text[mod->coderel]) || - rdfloadseg(&mod->f,RDOFF_DATA,&data[mod->datarel])) { - rdfperror("ldrdf",mod->name); - exit(1); - } - rdfclose(&mod->f); /* close file; segments remain */ - mod = mod->next; - } -} - -/* link_segments() step through relocation records in each module's - * header, fixing up references. - */ - -void link_segments(void) -{ - struct modulenode *mod; - Collection imports; - symtabEnt *s; - long rel,relto; - char *seg; - rdfheaderrec *r; - int bRelative; - - if (verbose) printf("linking segments\n"); - - collection_init(&imports); - - for (mod = modules; mod; mod = mod->next) { - if (verbose >= 2) printf("* processing %s\n",mod->name); - rdfheaderrewind(&mod->f); - while((r = rdfgetheaderrec(&mod->f))) { - if (verbose >= 3) printf("record type: %d\n",r->type); - switch(r->type) { - case 1: /* relocation record */ - if (r->r.segment >= 64) { /* Relative relocation; */ - bRelative = 1; /* need to find location relative */ - r->r.segment -= 64; /* to start of this segment */ - relto = r->r.segment == 0 ? mod->coderel : mod->datarel; - } - else - { - bRelative = 0; /* non-relative - need to relocate - * at load time */ - relto = 0; /* placate optimiser warnings */ - } - - /* calculate absolute offset of reference, not rel to beginning of - segment */ - r->r.offset += r->r.segment == 0 ? mod->coderel : mod->datarel; - - /* calculate the relocation factor to apply to the operand - - the base address of one of this modules segments if referred - segment is 0 - 2, or the address of an imported symbol - otherwise. */ - - if (r->r.refseg == 0) rel = mod->coderel; - else if (r->r.refseg == 1) rel = mod->datarel; - else if (r->r.refseg == 2) rel = mod->bssrel; - else { /* cross module link - find reference */ - s = *colln(&imports,r->r.refseg - 2); - if (!s) { - fprintf(stderr,"ldrdf: link to undefined segment %04x in" - " %s:%d\n", r->r.refseg,mod->name,r->r.segment); - errors = 1; - break; - } - rel = s->offset; - - r->r.refseg = s->segment; /* change referred segment, - so that new header is - correct */ - } - - if (bRelative) /* Relative - subtract current segment start */ - rel -= relto; - else - { /* Add new relocation header */ - rdfaddheader(newheader,r); - } - - /* Work out which segment we're making changes to ... */ - if (r->r.segment == 0) seg = text; - else if (r->r.segment == 1) seg = data; - else { - fprintf(stderr,"ldrdf: relocation in unknown segment %d in " - "%s\n", r->r.segment,mod->name); - errors = 1; - break; - } - - /* Add the relocation factor to the datum specified: */ - - if (verbose >= 3) - printf(" - relocating %d:%08lx by %08lx\n",r->r.segment, - r->r.offset,rel); - - /**** The following code is non-portable. Rewrite it... ****/ - switch(r->r.length) { - case 1: - seg[r->r.offset] += (char) rel; - break; - case 2: - *(int16 *)(seg + r->r.offset) += (int16) rel; - break; - case 4: - *(long *)(seg + r->r.offset) += rel; - break; - } - break; - - case 2: /* import record */ - s = symtabFind(symtab, r->i.label); - if (s == NULL) { - /* Need to add support for dynamic linkage */ - fprintf(stderr,"ldrdf: undefined symbol %s in module %s\n", - r->i.label,mod->name); - errors = 1; - } - else - { - *colln(&imports,r->i.segment - 2) = s; - if (verbose >= 2) - printf("imported %s as %04x\n", r->i.label, r->i.segment); - } - break; - - case 3: /* export; dump to output new version */ - s = symtabFind(symtab, r->e.label); - if (! s) { - fprintf(stderr,"ldrdf: internal error - undefined symbol %s " - "exported in header of '%s'\n",r->e.label,mod->name); - continue; - } - r->e.offset = s->offset; - rdfaddheader(newheader,r); - break; - - case 4: /* DLL record */ - rdfaddheader(newheader,r); /* copy straight to output */ - break; - } - } - if (rdf_errno != 0) { - rdfperror("ldrdf",mod->name); - exit(1); - } - collection_reset(&imports); - } -} - -/* write_output() write linked program out to a file */ - -void write_output(char *filename) -{ - FILE * fp; - rdfheaderrec r; - - if (verbose) printf("writing output to '%s'\n",filename); - - fp = fopen(filename,"wb"); - if (! fp) - { - fprintf(stderr,"ldrdf: could not open '%s' for writing\n",filename); - exit(1); - } - - - /* add BSS length count to header... */ - if (bsslength) - { - r.type = 5; - r.b.amount = bsslength; - rdfaddheader(newheader,&r); - } - - /* Write header */ - rdfwriteheader(fp,newheader); - rdfdoneheader(newheader); - newheader = NULL; - - /* Write text */ - if (fwrite(&textlength,1,4,fp) != 4 - || fwrite(text,1,textlength,fp) !=textlength) - { - fprintf(stderr,"ldrdf: error writing %s\n",filename); - exit(1); - } - - /* Write data */ - if (fwrite(&datalength,1,4,fp) != 4 || - fwrite(data,1,datalength,fp) != datalength) - { - fprintf (stderr,"ldrdf: error writing %s\n", filename); - exit(1); - } - fclose(fp); -} - - -/* main program: interpret command line, and pass parameters on to - * individual module loaders & the linker - * - * Command line format: - * ldrdf [-o outfile | -x] [-r xxxx] [-v] [--] infile [infile ...] - * - * Default action is to output a file named 'aout.rdx'. -x specifies - * that the linked object program should be executed, rather than - * written to a file. -r specifies that the object program should - * be prelocated at address 'xxxx'. This option cannot be used - * in conjunction with -x. - */ - -const char *usagemsg = "usage:\n" -" ldrdf [-o outfile | -x] [-a x] [-v] [-p x] [--] infile [infile ...]\n" -" [-l<libname> ...]\n\n" -" ldrdf -h displays this message\n" -" ldrdf -r displays version information\n\n" -" -o selects output filename (default is aout.rdx)\n" -" -x causes ldrdx to link & execute rather than write to file\n" -" -a x causes object program to be statically relocated to address 'x'\n" -" -v turns on verbose mode\n" -" -p x causes segments to be aligned (padded) to x byte boundaries\n" -" (default is 16 bytes)\n" -" -l<name> causes 'name' to be linked in as a library. Note no search is\n" -" performed - the entire pathname MUST be specified.\n"; - -void usage(void) -{ - fputs(usagemsg,stderr); -} - -int main(int argc,char **argv) -{ - char *ofilename = "aout.rdx"; - long relocateaddr = -1; /* -1 if no relocation is to occur */ - int execute = 0; /* 1 to execute after linking, 0 otherwise */ - int procsw = 1; /* set to 0 by '--' */ - int tmp; - - if (argc == 1) { - usage(); - exit(1); - } - - /* process command line switches, and add modules specified to linked list - of modules, keeping track of total memory required to load them */ - - while(argv++,--argc) { - if (procsw && !strcmp(*argv,"-h")) { /* Help command */ - usage(); exit(1); - } - else if (procsw && !strcmp(*argv,"-r")) { - printf("ldrdf version %s (%s) (%s)\n",LDRDF_VERSION,_RDOFF_H, - sizeof(int) == 2 ? "16 bit" : "32 bit"); - exit(1); - } - else if (procsw && !strcmp(*argv,"-o")) { - ofilename = *++argv; - --argc; - if (execute) { - fprintf(stderr,"ldrdf: -o and -x switches incompatible\n"); - exit(1); - } - if (verbose > 1) printf("output filename set to '%s'\n",ofilename); - } - else if (procsw && !strcmp(*argv,"-x")) { - execute++; - if (verbose > 1) printf("will execute linked object\n"); - } - else if (procsw && !strcmp(*argv,"-a")) { - relocateaddr = readnum(*++argv,&tmp); - --argc; - if (tmp) { - fprintf(stderr,"ldrdf: error in parameter to '-a' switch: '%s'\n", - *argv); - exit(1); - } - if (execute) { - fprintf(stderr,"ldrdf: -a and -x switches incompatible\n"); - exit(1); - } - if (verbose) printf("will relocate to %08lx\n",relocateaddr); - } - else if (procsw && !strcmp(*argv,"-v")) { - verbose++; - if (verbose == 1) printf("verbose mode selected\n"); - } - else if (procsw && !strcmp(*argv,"-p")) { - align = readnum(*++argv,&tmp); - --argc; - if (tmp) { - fprintf(stderr,"ldrdf: error in parameter to '-p' switch: '%s'\n", - *argv); - exit(1); - } - if (align != 1 && align != 2 && align != 4 && align != 8 && align != 16 - && align != 32 && align != 256) { - fprintf(stderr,"ldrdf: %d is an invalid alignment factor - must be" - "1,2,4,8,16 or 256\n",align); - exit(1); - } - if (verbose > 1) printf("alignment %d selected\n",align); - } - else if (procsw && !strncmp(*argv,"-l",2)) { - load_library(*argv + 2); - } - else if (procsw && !strcmp(*argv,"--")) { - procsw = 0; - } - else { /* is a filename */ - if (verbose > 1) printf("processing module %s\n",*argv); - loadmodule(*argv); - } - } - - /* we should be scanning for unresolved references, and removing - unreferenced modules from the list of modules here, so that - we know about the final size once libraries have been linked in */ - - build_symbols(); /* build a global symbol table... */ - - scan_libraries(); /* check for imported symbols not in table, - and ensure the relevant library modules - are loaded */ - - load_segments(); /* having calculated size of reqd segments, load - each rdoff module's segments into memory */ - - link_segments(); /* step through each module's header, and resolve - references to the global symbol table. - This also does local address fixups. */ - - if (errors) { - fprintf(stderr,"ldrdf: there were errors - aborted\n"); - exit(errors); - } - if (execute) { - fprintf(stderr,"ldrdf: module execution not yet supported\n"); - exit(1); - } - if (relocateaddr != -1) { - fprintf(stderr,"ldrdf: static relocation not yet supported\n"); - exit(1); - } - - write_output(ofilename); - return 0; -} diff --git a/rdoff/test/makelib b/rdoff/test/makelib deleted file mode 100644 index baa4676..0000000 --- a/rdoff/test/makelib +++ /dev/null @@ -1,14 +0,0 @@ - -LIBNAME=$1; -shift; - -if [ "$LIBNAME" = "" ]; then - echo 'Usage: makelib <library name> <module> [...]' -fi - -rdflib c $LIBNAME - -for FILE in $*; do - rdflib a $LIBNAME $FILE $FILE -done - diff --git a/rdoff/v1/README b/rdoff/v1/README deleted file mode 100644 index 56ad81b..0000000 --- a/rdoff/v1/README +++ /dev/null @@ -1,5 +0,0 @@ -This directory contains programs for working with RDOFF version 1 object -files. RDOFF version 1 is no longer supported - you should now be using -RDOFF2. If you are working with your own code, the changes you will need -to make are very simple, and are outlined in the document Changes in the -nasm/rdoff directory. diff --git a/rdoff/v1/collectn.c b/rdoff/v1/collectn.c deleted file mode 100644 index c265c95..0000000 --- a/rdoff/v1/collectn.c +++ /dev/null @@ -1,40 +0,0 @@ -/* collectn.c Implements variable length pointer arrays [collections] - * - * This file is public domain. - */ - -#include "collectn.h" -#include <stdlib.h> - -void collection_init(Collection * c) -{ - int i; - - for (i = 0; i < 32; i++) c->p[i] = NULL; - c->next = NULL; -} - -void ** colln(Collection * c, int index) -{ - while (index >= 32) { - index -= 32; - if (c->next == NULL) { - c->next = malloc(sizeof(Collection)); - collection_init(c->next); - } - c = c->next; - } - return &(c->p[index]); -} - -void collection_reset(Collection *c) -{ - int i; - if (c->next) { - collection_reset(c->next); - free(c->next); - } - - c->next = NULL; - for (i = 0; i < 32; i++) c->p[i] = NULL; -} diff --git a/rdoff/v1/collectn.h b/rdoff/v1/collectn.h deleted file mode 100644 index 2dc786e..0000000 --- a/rdoff/v1/collectn.h +++ /dev/null @@ -1,22 +0,0 @@ -/* collectn.h Header file for 'collection' abstract data type - * - * This file is public domain, and does not come under the NASM license. - * It, along with 'collectn.c' implements what is basically a variable - * length array (of pointers) - */ - -#ifndef _COLLECTN_H -#define _COLLECTN_H - -typedef struct tagCollection { - void *p[32]; /* array of pointers to objects */ - - struct tagCollection *next; -} Collection; - -void collection_init(Collection * c); -void ** colln(Collection * c, int index); -void collection_reset(Collection * c); - -#endif - diff --git a/rdoff/v1/ldrdf.c b/rdoff/v1/ldrdf.c deleted file mode 100644 index 9e4a215..0000000 --- a/rdoff/v1/ldrdf.c +++ /dev/null @@ -1,728 +0,0 @@ -/* ldrdf.c RDOFF Object File linker/loader main program - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - */ - -/* TODO: Make the system skip a module (other than the first) if none - * of the other specified modules contain a reference to it. - * May require the system to make an extra pass of the modules to be - * loaded eliminating those that aren't required. - * - * Support all the existing documented options... - * - * Support libaries (.a files - requires a 'ranlib' type utility) - * (I think I've got this working, so I've upped the version) - * - * -s option to strip resolved symbols from exports. (Could make this an - * external utility) - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "rdoff.h" -#include "nasmlib.h" -#include "symtab.h" -#include "collectn.h" -#include "rdlib.h" - -#define LDRDF_VERSION "0.30" - -/* global variables - those to set options: */ - -int verbose = 0; /* reflects setting of command line switch */ -int align = 16; -int errors = 0; /* set by functions to cause halt after current - stage of processing */ - -/* the linked list of modules that must be loaded & linked */ - -struct modulenode { - rdffile f; /* the file */ - long coderel; /* module's code relocation factor */ - long datarel; /* module's data relocation factor */ - long bssrel; /* module's bss data reloc. factor */ - void * header; /* header location, if loaded */ - char * name; /* filename */ - struct modulenode *next; -}; - -#define newstr(str) strcpy(malloc(strlen(str) + 1),str) -#define newstrcat(s1,s2) strcat(strcpy(malloc(strlen(s1)+strlen(s2)+1),s1),s2) - - -struct modulenode *modules = NULL,*lastmodule = NULL; - -/* the linked list of libraries to be searched for missing imported - symbols */ - -struct librarynode * libraries = NULL, * lastlib = NULL; - -void *symtab; /* The symbol table */ - -rdf_headerbuf * newheader ; /* New header to be written to output */ - -/* loadmodule - find the characteristics of a module and add it to the - * list of those being linked together */ - -void loadmodule(char *filename) -{ - struct modulenode *prev; - if (! modules) { - modules = malloc(sizeof(struct modulenode)); - lastmodule = modules; - prev = NULL; - } - else { - lastmodule->next = malloc(sizeof(struct modulenode)); - prev = lastmodule; - lastmodule = lastmodule->next; - } - - if (! lastmodule) { - fputs("ldrdf: not enough memory\n",stderr); - exit(1); - } - - if (rdfopen(&lastmodule->f,filename)) { - rdfperror("ldrdf",filename); - exit(1); - } - - lastmodule->header = NULL; /* header hasn't been loaded */ - lastmodule->name = filename; - lastmodule->next = NULL; - - if (prev) { - lastmodule->coderel = prev->coderel + prev->f.code_len; - if (lastmodule->coderel % align != 0) - lastmodule->coderel += align - (lastmodule->coderel % align); - lastmodule->datarel = prev->datarel + prev->f.data_len; - if (lastmodule->datarel % align != 0) - lastmodule->datarel += align - (lastmodule->datarel % align); - } - else { - lastmodule->coderel = 0; - lastmodule->datarel = 0; - } - - if (verbose) - printf("%s code = %08lx (+%04lx), data = %08lx (+%04lx)\n",filename, - lastmodule->coderel,lastmodule->f.code_len, - lastmodule->datarel,lastmodule->f.data_len); - - lastmodule->header = malloc(lastmodule->f.header_len); - if (!lastmodule->header) { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - - if (rdfloadseg(&lastmodule->f,RDOFF_HEADER,lastmodule->header)) - { - rdfperror("ldrdf",filename); - exit(1); - } -} - -/* load_library add a library to list of libraries to search - * for undefined symbols - */ - -void load_library(char * name) -{ - if (verbose) - printf("adding library %s to search path\n",name); - - if (! lastlib) { - lastlib = libraries = malloc(sizeof(struct librarynode)); - } - else - { - lastlib->next = malloc(sizeof(struct librarynode)); - lastlib = lastlib->next; - } - - if (! lastlib) { - fprintf(stderr, "ldrdf: out of memory\n"); - exit(1); - } - strcpy (lastlib->name = malloc (1+strlen(name)), name); - lastlib->fp = NULL; - lastlib->referenced = 0; - lastlib->next = NULL; -} - - -/* build_symbols() step through each module's header, and locate - * exported symbols, placing them in a global table - */ - -long bsslength; - -void mod_addsymbols(struct modulenode * mod) -{ - rdfheaderrec *r; - symtabEnt e; - long cbBss; - - mod->bssrel = bsslength; - cbBss = 0; - rdfheaderrewind(&mod->f); - while ((r = rdfgetheaderrec(&mod->f))) - { - - if (r->type == 5) /* Allocate BSS */ - cbBss += r->b.amount; - - if (r->type != 3) continue; /* ignore all but export recs */ - - e.segment = r->e.segment; - e.offset = r->e.offset + - (e.segment == 0 ? mod->coderel : /* 0 -> code */ - e.segment == 1 ? mod->datarel : /* 1 -> data */ - mod->bssrel) ; /* 2 -> bss */ - - e.flags = 0; - e.name = malloc(strlen(r->e.label) + 1); - if (! e.name) - { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - strcpy(e.name,r->e.label); - symtabInsert(symtab,&e); - } - bsslength += cbBss; -} - -void build_symbols() -{ - struct modulenode *mod; - - if (verbose) printf("building global symbol table:\n"); - newheader = rdfnewheader(); - - symtab = symtabNew(); - bsslength = 0; /* keep track of location of BSS symbols */ - - for (mod = modules; mod; mod = mod->next) - { - mod_addsymbols( mod ); - } - if (verbose) - { - symtabDump(symtab,stdout); - printf("BSS length = %ld bytes\n\n",bsslength); - } -} - - -/* scan_libraries() search through headers of modules for undefined - * symbols, and scan libraries for those symbols, - * adding library modules found to list of modules - * to load. */ - -void scan_libraries(void) -{ - struct modulenode * mod, * nm; - struct librarynode * lib; - rdfheaderrec * r; - int found; - char * tmp; - - if (verbose) printf("Scanning libraries for unresolved symbols...\n"); - - mod = modules; - - while (mod) - { - rdfheaderrewind(&mod->f); - - while ((r = rdfgetheaderrec(&mod->f))) - { - if (r->type != 2) continue; /* not an import record */ - if ( symtabFind (symtab,r->i.label) ) - continue; /* symbol already defined */ - - /* okay, we have an undefined symbol... step through - the libraries now */ - if (verbose >= 2) { - printf("undefined symbol '%s'...",r->i.label); - fflush(stdout); - } - - lib = libraries; - found = 0; - - tmp = newstr(r->i.label); - while (! found && lib) - { - /* move this to an outer loop...! */ - nm = malloc(sizeof(struct modulenode)); - - if (rdl_searchlib(lib,tmp,&nm->f)) - { /* found a module in the library */ - - /* create a modulenode for it */ - - if (! nm) { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - - nm->name = newstrcat(lib->name,nm->f.name); - if (verbose >= 2) printf("found in '%s'\n",nm->name); - - nm->coderel = lastmodule->coderel + lastmodule->f.code_len; - if (nm->coderel % align != 0) - nm->coderel += align - (nm->coderel % align); - - nm->datarel = lastmodule->datarel + lastmodule->f.data_len; - if (nm->datarel % align != 0) - nm->datarel += align - (nm->datarel % align); - - nm->header = malloc(nm->f.header_len); - if (! nm->header) - { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - - if (rdfloadseg(&nm->f,RDOFF_HEADER,nm->header)) - { - rdfperror("ldrdf",nm->name); - exit(1); - } - - nm->next = NULL; - found = 1; - lastmodule->next = nm; - lastmodule = nm; - - if (verbose) - printf("%s code = %08lx (+%04lx), data = %08lx " - "(+%04lx)\n",lastmodule->name, - lastmodule->coderel,lastmodule->f.code_len, - lastmodule->datarel,lastmodule->f.data_len); - - /* add the module's info to the symbol table */ - mod_addsymbols(nm); - } - else - { - if (rdl_error) { - rdl_perror("ldrdf",lib->name); - exit(1); - } - free(nm); - } - lib = lib->next; - } - free(tmp); - if (!found && verbose >= 2) printf("not found\n"); - } - mod = mod->next; - } -} - -/* load_segments() allocates memory for & loads the code & data segs - * from the RDF modules - */ - -char *text,*data; -long textlength,datalength; - -void load_segments(void) -{ - struct modulenode *mod; - - if (!modules) { - fprintf(stderr,"ldrdf: nothing to do\n"); - exit(0); - } - if (!lastmodule) { - fprintf(stderr,"ldrdf: panic: module list exists, but lastmodule=NULL\n"); - exit(3); - } - - if (verbose) - printf("loading modules into memory\n"); - - /* The following stops 16 bit DOS from crashing whilst attempting to - work using segments > 64K */ - if (sizeof(int) == 2) { /* expect a 'code has no effect' warning on 32 bit - platforms... */ - if (lastmodule->coderel + lastmodule->f.code_len > 65535 || - lastmodule->datarel + lastmodule->f.data_len > 65535) { - fprintf(stderr,"ldrdf: segment length has exceeded 64K; use a 32 bit " - "version.\nldrdf: code size = %05lx, data size = %05lx\n", - lastmodule->coderel + lastmodule->f.code_len, - lastmodule->datarel + lastmodule->f.data_len); - exit(1); - } - } - - text = malloc(textlength = lastmodule->coderel + lastmodule->f.code_len); - data = malloc(datalength = lastmodule->datarel + lastmodule->f.data_len); - - if (!text || !data) { - fprintf(stderr,"ldrdf: out of memory\n"); - exit(1); - } - - mod = modules; - while (mod) { /* load the segments for each module */ - if (verbose >= 2) printf(" loading %s\n",mod->name); - if (rdfloadseg(&mod->f,RDOFF_CODE,&text[mod->coderel]) || - rdfloadseg(&mod->f,RDOFF_DATA,&data[mod->datarel])) { - rdfperror("ldrdf",mod->name); - exit(1); - } - rdfclose(&mod->f); /* close file; segments remain */ - mod = mod->next; - } -} - -/* link_segments() step through relocation records in each module's - * header, fixing up references. - */ - -void link_segments(void) -{ - struct modulenode *mod; - Collection imports; - symtabEnt *s; - long rel,relto; - char *seg; - rdfheaderrec *r; - int bRelative; - - if (verbose) printf("linking segments\n"); - - collection_init(&imports); - - for (mod = modules; mod; mod = mod->next) { - if (verbose >= 2) printf("* processing %s\n",mod->name); - rdfheaderrewind(&mod->f); - while((r = rdfgetheaderrec(&mod->f))) { - if (verbose >= 3) printf("record type: %d\n",r->type); - switch(r->type) { - case 1: /* relocation record */ - if (r->r.segment >= 64) { /* Relative relocation; */ - bRelative = 1; /* need to find location relative */ - r->r.segment -= 64; /* to start of this segment */ - relto = r->r.segment == 0 ? mod->coderel : mod->datarel; - } - else - { - bRelative = 0; /* non-relative - need to relocate - * at load time */ - relto = 0; /* placate optimiser warnings */ - } - - /* calculate absolute offset of reference, not rel to beginning of - segment */ - r->r.offset += r->r.segment == 0 ? mod->coderel : mod->datarel; - - /* calculate the relocation factor to apply to the operand - - the base address of one of this modules segments if referred - segment is 0 - 2, or the address of an imported symbol - otherwise. */ - - if (r->r.refseg == 0) rel = mod->coderel; - else if (r->r.refseg == 1) rel = mod->datarel; - else if (r->r.refseg == 2) rel = mod->bssrel; - else { /* cross module link - find reference */ - s = *colln(&imports,r->r.refseg - 2); - if (!s) { - fprintf(stderr,"ldrdf: link to undefined segment %04x in" - " %s:%d\n", r->r.refseg,mod->name,r->r.segment); - errors = 1; - break; - } - rel = s->offset; - - r->r.refseg = s->segment; /* change referred segment, - so that new header is - correct */ - } - - if (bRelative) /* Relative - subtract current segment start */ - rel -= relto; - else - { /* Add new relocation header */ - rdfaddheader(newheader,r); - } - - /* Work out which segment we're making changes to ... */ - if (r->r.segment == 0) seg = text; - else if (r->r.segment == 1) seg = data; - else { - fprintf(stderr,"ldrdf: relocation in unknown segment %d in " - "%s\n", r->r.segment,mod->name); - errors = 1; - break; - } - - /* Add the relocation factor to the datum specified: */ - - if (verbose >= 3) - printf(" - relocating %d:%08lx by %08lx\n",r->r.segment, - r->r.offset,rel); - - /**** The following code is non-portable. Rewrite it... ****/ - switch(r->r.length) { - case 1: - seg[r->r.offset] += (char) rel; - break; - case 2: - *(int16 *)(seg + r->r.offset) += (int16) rel; - break; - case 4: - *(long *)(seg + r->r.offset) += rel; - break; - } - break; - - case 2: /* import record */ - s = symtabFind(symtab, r->i.label); - if (s == NULL) { - /* Need to add support for dynamic linkage */ - fprintf(stderr,"ldrdf: undefined symbol %s in module %s\n", - r->i.label,mod->name); - errors = 1; - } - else - { - *colln(&imports,r->i.segment - 2) = s; - if (verbose >= 2) - printf("imported %s as %04x\n", r->i.label, r->i.segment); - } - break; - - case 3: /* export; dump to output new version */ - s = symtabFind(symtab, r->e.label); - if (! s) { - fprintf(stderr,"ldrdf: internal error - undefined symbol %s " - "exported in header of '%s'\n",r->e.label,mod->name); - continue; - } - r->e.offset = s->offset; - rdfaddheader(newheader,r); - break; - - case 4: /* DLL record */ - rdfaddheader(newheader,r); /* copy straight to output */ - break; - } - } - if (rdf_errno != 0) { - rdfperror("ldrdf",mod->name); - exit(1); - } - collection_reset(&imports); - } -} - -/* write_output() write linked program out to a file */ - -void write_output(char *filename) -{ - FILE * fp; - rdfheaderrec r; - - if (verbose) printf("writing output to '%s'\n",filename); - - fp = fopen(filename,"wb"); - if (! fp) - { - fprintf(stderr,"ldrdf: could not open '%s' for writing\n",filename); - exit(1); - } - - - /* add BSS length count to header... */ - if (bsslength) - { - r.type = 5; - r.b.amount = bsslength; - rdfaddheader(newheader,&r); - } - - /* Write header */ - rdfwriteheader(fp,newheader); - rdfdoneheader(newheader); - newheader = NULL; - - /* Write text */ - if (fwrite(&textlength,1,4,fp) != 4 - || fwrite(text,1,textlength,fp) !=textlength) - { - fprintf(stderr,"ldrdf: error writing %s\n",filename); - exit(1); - } - - /* Write data */ - if (fwrite(&datalength,1,4,fp) != 4 || - fwrite(data,1,datalength,fp) != datalength) - { - fprintf (stderr,"ldrdf: error writing %s\n", filename); - exit(1); - } - fclose(fp); -} - - -/* main program: interpret command line, and pass parameters on to - * individual module loaders & the linker - * - * Command line format: - * ldrdf [-o outfile | -x] [-r xxxx] [-v] [--] infile [infile ...] - * - * Default action is to output a file named 'aout.rdx'. -x specifies - * that the linked object program should be executed, rather than - * written to a file. -r specifies that the object program should - * be prelocated at address 'xxxx'. This option cannot be used - * in conjunction with -x. - */ - -const char *usagemsg = "usage:\n" -" ldrdf [-o outfile | -x] [-a x] [-v] [-p x] [--] infile [infile ...]\n" -" [-l<libname> ...]\n\n" -" ldrdf -h displays this message\n" -" ldrdf -r displays version information\n\n" -" -o selects output filename (default is aout.rdx)\n" -" -x causes ldrdx to link & execute rather than write to file\n" -" -a x causes object program to be statically relocated to address 'x'\n" -" -v turns on verbose mode\n" -" -p x causes segments to be aligned (padded) to x byte boundaries\n" -" (default is 16 bytes)\n" -" -l<name> causes 'name' to be linked in as a library. Note no search is\n" -" performed - the entire pathname MUST be specified.\n"; - -void usage(void) -{ - fputs(usagemsg,stderr); -} - -int main(int argc,char **argv) -{ - char *ofilename = "aout.rdx"; - long relocateaddr = -1; /* -1 if no relocation is to occur */ - int execute = 0; /* 1 to execute after linking, 0 otherwise */ - int procsw = 1; /* set to 0 by '--' */ - int tmp; - - if (argc == 1) { - usage(); - exit(1); - } - - /* process command line switches, and add modules specified to linked list - of modules, keeping track of total memory required to load them */ - - while(argv++,--argc) { - if (procsw && !strcmp(*argv,"-h")) { /* Help command */ - usage(); exit(1); - } - else if (procsw && !strcmp(*argv,"-r")) { - printf("ldrdf version %s (%s) (%s)\n",LDRDF_VERSION,_RDOFF_H, - sizeof(int) == 2 ? "16 bit" : "32 bit"); - exit(1); - } - else if (procsw && !strcmp(*argv,"-o")) { - ofilename = *++argv; - --argc; - if (execute) { - fprintf(stderr,"ldrdf: -o and -x switches incompatible\n"); - exit(1); - } - if (verbose > 1) printf("output filename set to '%s'\n",ofilename); - } - else if (procsw && !strcmp(*argv,"-x")) { - execute++; - if (verbose > 1) printf("will execute linked object\n"); - } - else if (procsw && !strcmp(*argv,"-a")) { - relocateaddr = readnum(*++argv,&tmp); - --argc; - if (tmp) { - fprintf(stderr,"ldrdf: error in parameter to '-a' switch: '%s'\n", - *argv); - exit(1); - } - if (execute) { - fprintf(stderr,"ldrdf: -a and -x switches incompatible\n"); - exit(1); - } - if (verbose) printf("will relocate to %08lx\n",relocateaddr); - } - else if (procsw && !strcmp(*argv,"-v")) { - verbose++; - if (verbose == 1) printf("verbose mode selected\n"); - } - else if (procsw && !strcmp(*argv,"-p")) { - align = readnum(*++argv,&tmp); - --argc; - if (tmp) { - fprintf(stderr,"ldrdf: error in parameter to '-p' switch: '%s'\n", - *argv); - exit(1); - } - if (align != 1 && align != 2 && align != 4 && align != 8 && align != 16 - && align != 32 && align != 256) { - fprintf(stderr,"ldrdf: %d is an invalid alignment factor - must be" - "1,2,4,8,16 or 256\n",align); - exit(1); - } - if (verbose > 1) printf("alignment %d selected\n",align); - } - else if (procsw && !strncmp(*argv,"-l",2)) { - load_library(*argv + 2); - } - else if (procsw && !strcmp(*argv,"--")) { - procsw = 0; - } - else { /* is a filename */ - if (verbose > 1) printf("processing module %s\n",*argv); - loadmodule(*argv); - } - } - - /* we should be scanning for unresolved references, and removing - unreferenced modules from the list of modules here, so that - we know about the final size once libraries have been linked in */ - - build_symbols(); /* build a global symbol table... */ - - scan_libraries(); /* check for imported symbols not in table, - and ensure the relevant library modules - are loaded */ - - load_segments(); /* having calculated size of reqd segments, load - each rdoff module's segments into memory */ - - link_segments(); /* step through each module's header, and resolve - references to the global symbol table. - This also does local address fixups. */ - - if (errors) { - fprintf(stderr,"ldrdf: there were errors - aborted\n"); - exit(errors); - } - if (execute) { - fprintf(stderr,"ldrdf: module execution not yet supported\n"); - exit(1); - } - if (relocateaddr != -1) { - fprintf(stderr,"ldrdf: static relocation not yet supported\n"); - exit(1); - } - - write_output(ofilename); - return 0; -} diff --git a/rdoff/v1/rdf.doc b/rdoff/v1/rdf.doc deleted file mode 100644 index 300c2bc..0000000 --- a/rdoff/v1/rdf.doc +++ /dev/null @@ -1,99 +0,0 @@ -RDOFF: Relocatable Dynamically-linked Object File Format -======================================================== - -RDOFF was designed initially to test the object-file production -interface to NASM. It soon became apparent that it could be enhanced -for use in serious applications due to its simplicity; code to load -and execute an RDOFF object module is very simple. It also contains -enhancements to allow it to be linked with a dynamic link library at -either run- or load- time, depending on how complex you wish to make -your loader. - -The RDOFF format (version 1.1, as produced by NASM v0.91) is defined -as follows: - -The first six bytes of the file contain the string 'RDOFF1'. Other -versions of the format may contain other last characters other than -'1' - all little endian versions of the file will always contain an -ASCII character with value greater than 32. If RDOFF is used on a -big-endian machine at some point in the future, the version will be -encoded in decimal rather than ASCII, so will be below 32. - -All multi-byte fields follwing this are encoded in either little- or -big-endian format depending on the system described by this version -information. Object files should be encoded in the endianness of -their target machine; files of incorrect endianness will be rejected -by the loader - this means that loaders do not need to convert -endianness, as RDOFF has been designed with simplicity of loading at -the forefront of the design requirements. - -The next 4 byte field is the length of the header in bytes. The -header consists of a sequence of variable length records. Each -record's type is identified by the first byte of the record. Record -types 1-4 are currently supported. Record type 5 will be added in -the near future, when I implement BSS segments. Record type 6 may be -to do with debugging, when I get debugging implemented. - -Type 1: Relocation -================== - -Offset Length Description -0 1 Type (contains 1) -1 1 Segment that contains reference (0 = text, 1 = data) - Add 64 to this number to indicate a relative linkage - to an external symbol (see notes) -2 4 Offset of reference -6 1 Length of reference (1,2 or 4 bytes) -7 2 Segment to which reference is made (0 = text, 1 = - data, 2 = BSS [when implemented]) others are external - symbols. - -Total length = 9 bytes - -Type 2: Symbol Import -===================== - -0 1 Type (2) -1 2 Segment number that will be used in references to this - symbol. -3 ? Null terminated string containing label (up to 32 - chars) to match against exports in linkage. - -Type 3: Symbol Export -===================== - -0 1 Type (3) -1 1 Segment containing object to be exported (0/1/2) -2 4 Offset within segment -6 ? Null terminate string containing label to export (32 - char maximum length) - -Type 4: Dynamic Link Library -============================ - -0 1 Type (4) -1 ? Library name (up to 128 chars) - -Type 5: Reserve BSS -=================== - -0 1 Type (5) -1 4 Amount of BSS space to reserve in bytes - -Total length: 5 bytes - ------------------------------------------------------------------------------ - -Following the header is the text (code) segment. This is preceded by -a 4-byte integer, which is its length in bytes. This is followed by -the length of the data segment (also 4 bytes), and finally the data -segment. - -Notes -===== - -Relative linking: The number stored at the address is offset -required from the imported symbol, with the address of the end of -the instruction subtracted from it. This means that the linker can -simply add the address of the label relative to the beginning of the -current segment to it. diff --git a/rdoff/v1/rdf2bin.c b/rdoff/v1/rdf2bin.c deleted file mode 100644 index 97b45b4..0000000 --- a/rdoff/v1/rdf2bin.c +++ /dev/null @@ -1,125 +0,0 @@ -/* rdf2bin: convert an RDOFF object file to flat binary */ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> - -#include "rdfload.h" -#include "rdoff.h" -#include "nasmlib.h" - -long origin = 0; -int align = 16; - -char *getfilename(char * pathname) -{ - char * lastslash = pathname - 1; - char * i = pathname; - - while ( *i ) { - if (*i == '/') lastslash = i; - i++; - } - return lastslash + 1; -} - -int main(int argc, char **argv) -{ - rdfmodule * m; - int tmp; - FILE *of; - char * padding; - int codepad, datapad; - - if (argc < 2) { - puts("Usage: rdf2bin [-o relocation-origin] [-p segment-alignment] " - "input-file output-file"); - puts(" rdf2com [-p segment-alignment] input-file output-file"); - return 1; - } - - if (! nasm_stricmp(getfilename(*argv),"rdf2com")) { - origin = 0x100; - } - argv++, argc--; - - while (argc > 2) { - if (! strcmp(*argv,"-o")) { - argv++, argc--; - origin = readnum(*argv, &tmp); - if (tmp) { - fprintf(stderr,"rdf2bin: invalid parameter: %s\n",*argv); - return 1; - } - } else if (! strcmp(*argv,"-p")) { - argv++, argc--; - align = readnum(*argv, &tmp); - if (tmp) { - fprintf(stderr,"rdf2bin: invalid parameter: %s\n",*argv); - return 1; - } - } else - break; - - argv++, argc--; - } - if (argc < 2) { - puts("rdf2bin: required parameter missing"); - return -1; - } - m = rdfload(*argv); - - if (! m) - { - rdfperror("rdf2bin",*argv); - return 1; - } - printf("relocating %s: origin=%lx, align=%d\n",*argv,origin,align); - - m->textrel = origin; - m->datarel = origin + m->f.code_len; - if (m->datarel % align != 0) { - codepad = align - (m->datarel % align); - m->datarel += codepad; - } - else - codepad = 0; - - m->bssrel = m->datarel + m->f.data_len; - if (m->bssrel % align != 0) { - datapad = align - (m->bssrel % align); - m->bssrel += datapad; - } - else - datapad = 0; - - printf("code: %08lx\ndata: %08lx\nbss: %08lx\n", - m->textrel, m->datarel, m->bssrel); - - rdf_relocate(m); - - argv++; - - of = fopen(*argv,"wb"); - if (!of) { - fprintf(stderr,"rdf2bin: could not open output file %s\n",*argv); - return 1; - } - - padding = malloc(align); - if (!padding) { - fprintf(stderr,"rdf2bin: out of memory\n"); - return 1; - } - - if (fwrite(m->t,1,m->f.code_len,of) != m->f.code_len || - fwrite(padding,1,codepad,of) != codepad || - fwrite(m->d,1,m->f.data_len,of) != m->f.data_len) - { - fprintf(stderr,"rdf2bin: error writing to %s\n", *argv); - return 1; - } - - fclose(of); - return 0; -} diff --git a/rdoff/v1/rdfdump.c b/rdoff/v1/rdfdump.c deleted file mode 100644 index 080c2e7..0000000 --- a/rdoff/v1/rdfdump.c +++ /dev/null @@ -1,167 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -FILE *infile; - -long translatelong(long in) { /* translate from little endian to - local representation */ - long r; - unsigned char *i; - - i = (unsigned char *)∈ - r = i[3]; - r = (r << 8) + i[2]; - r = (r << 8) + i[1]; - r = (r << 8) + *i; - - return r; -} - -int translateshort(short in) { - int r; - unsigned char *i; - - i = (unsigned char *)∈ - r = (i[1] << 8) + *i; - - return r; -} -void print_header(long length) { - char buf[129],t,s,l; - long o,ll; - short rs; - - while (length > 0) { - fread(&t,1,1,infile); - switch(t) { - case 1: /* relocation record */ - fread(&s,1,1,infile); - fread(&o,4,1,infile); - fread(&l,1,1,infile); - fread(&rs,2,1,infile); - printf(" relocation: location (%04x:%08lx), length %d, " - "referred seg %04x\n",(int)s,translatelong(o),(int)l, - translateshort(rs)); - length -= 9; - break; - case 2: /* import record */ - fread(&rs,2,1,infile); - ll = 0; - do { - fread(&buf[ll],1,1,infile); - } while (buf[ll++]); - printf(" import: segment %04x = %s\n",translateshort(rs),buf); - length -= ll + 3; - break; - case 3: /* export record */ - fread(&s,1,1,infile); - fread(&o,4,1,infile); - ll = 0; - do { - fread(&buf[ll],1,1,infile); - } while (buf[ll++]); - printf(" export: (%04x:%08lx) = %s\n",(int)s,translatelong(o),buf); - length -= ll + 6; - break; - case 4: /* DLL record */ - ll = 0; - do { - fread(&buf[ll],1,1,infile); - } while (buf[ll++]); - printf(" dll: %s\n",buf); - length -= ll + 1; - break; - case 5: /* BSS reservation */ - fread(&ll,4,1,infile); - printf(" bss reservation: %08lx bytes\n",translatelong(ll)); - length -= 5; - break; - default: - printf(" unrecognised record (type %d)\n",(int)t); - length --; - } - } -} - -int main(int argc,char **argv) { - char id[7]; - long l; - int verbose = 0; - long offset; - - puts("RDOFF Dump utility v1.1 (C) Copyright 1996 Julian R Hall"); - - if (argc < 2) { - fputs("Usage: rdfdump [-v] <filename>\n",stderr); - exit(1); - } - - if (! strcmp (argv[1], "-v") ) - { - verbose = 1; - if (argc < 3) - { - fputs("required parameter missing\n",stderr); - exit(1); - } - argv++; - } - - infile = fopen(argv[1],"rb"); - if (! infile) { - fprintf(stderr,"rdfdump: Could not open %s",argv[1]); - exit(1); - } - - fread(id,6,1,infile); - if (strncmp(id,"RDOFF",5)) { - fputs("rdfdump: File does not contain valid RDOFF header\n",stderr); - exit(1); - } - - printf("File %s: RDOFF version %c\n\n",argv[1],id[5]); - if (id[5] < '1' || id[5] > '1') { - fprintf(stderr,"rdfdump: unknown RDOFF version '%c'\n",id[5]); - exit(1); - } - - fread(&l,4,1,infile); - l = translatelong(l); - printf("Header (%ld bytes):\n",l); - print_header(l); - - fread(&l,4,1,infile); - l = translatelong(l); - printf("\nText segment length = %ld bytes\n",l); - offset = 0; - while(l--) { - fread(id,1,1,infile); - if (verbose) { - if (offset % 16 == 0) - printf("\n%08lx ", offset); - printf(" %02x",(int) (unsigned char)id[0]); - offset++; - } - } - if (verbose) printf("\n\n"); - - fread(&l,4,1,infile); - l = translatelong(l); - printf("Data segment length = %ld bytes\n",l); - - if (verbose) - { - offset = 0; - while (l--) { - fread(id,1,1,infile); - if (offset % 16 == 0) - printf("\n%08lx ", offset); - printf(" %02x",(int) (unsigned char) id[0]); - offset++; - } - printf("\n"); - } - fclose(infile); - return 0; -} diff --git a/rdoff/v1/rdflib.c b/rdoff/v1/rdflib.c deleted file mode 100644 index 5846562..0000000 --- a/rdoff/v1/rdflib.c +++ /dev/null @@ -1,235 +0,0 @@ -/* rdflib - manipulate RDOFF library files (.rdl) */ - -/* an rdoff library is simply a sequence of RDOFF object files, each - preceded by the name of the module, an ASCII string of up to 255 - characters, terminated by a zero. There may be an optional - directory placed on the end of the file. The format of the - directory will be 'RDL' followed by a version number, followed by - the length of the directory, and then the directory, the format of - which has not yet been designed. */ - -#include <stdio.h> -#include <errno.h> -#include <string.h> - -/* functions supported: - create a library (no extra operands required) - add a module from a library (requires filename and name to give mod.) - remove a module from a library (requires given name) - extract a module from the library (requires given name and filename) - list modules */ - -const char *usage = - "usage:\n" - " rdflib x libname [extra operands]\n\n" - " where x is one of:\n" - " c - create library\n" - " a - add module (operands = filename module-name)\n" - " r - remove (module-name)\n" - " x - extract (module-name filename)\n" - " t - list\n"; - -char **_argv; - -#define _ENDIANNESS 0 /* 0 for little, 1 for big */ - -static void longtolocal(long * l) -{ -#if _ENDIANNESS - unsigned char t; - unsigned char * p = (unsigned char *) l; - - t = p[0]; - p[0] = p[3]; - p[3] = t; - t = p[1]; - p[1] = p[2]; - p[2] = p[1]; -#endif -} - -void copybytes(FILE *fp, FILE *fp2, int n) -{ - int i,t; - - for (i = 0 ; i < n; i++ ) - { - t = fgetc(fp); - if (t == EOF) - { - fprintf(stderr,"ldrdf: premature end of file in '%s'\n", - _argv[2]); - exit(1); - } - if (fp2) - if (fputc(t, fp2) == EOF) - { - fprintf(stderr,"ldrdf: write error\n"); - exit(1); - } - } -} - -long copylong(FILE *fp, FILE *fp2) -{ - long l; - int i,t; - unsigned char * p = (unsigned char *) &l; - - - for (i = 0 ; i < 4; i++ ) /* skip magic no */ - { - t = fgetc(fp); - if (t == EOF) - { - fprintf(stderr,"ldrdf: premature end of file in '%s'\n", - _argv[2]); - exit(1); - } - if (fp2) - if (fputc(t, fp2) == EOF) - { - fprintf(stderr,"ldrdf: write error\n"); - exit(1); - } - *p++ = t; - } - longtolocal (&l); - return l; -} - -int main(int argc, char **argv) -{ - FILE *fp, *fp2; - char *p, buf[256]; - int i; - - _argv = argv; - - if (argc < 3 || !strncmp(argv[1],"-h",2) || !strncmp(argv[1],"--h",3)) - { - printf(usage); - exit(1); - } - - switch(argv[1][0]) - { - case 'c': /* create library */ - fp = fopen(argv[2],"wb"); - if (! fp) { - fprintf(stderr,"ldrdf: could not open '%s'\n",argv[2]); - perror("ldrdf"); - exit(1); - } - fclose(fp); - break; - - case 'a': /* add module */ - if (argc < 5) { - fprintf(stderr,"ldrdf: required parameter missing\n"); - exit(1); - } - fp = fopen(argv[2],"ab"); - if (! fp) - { - fprintf(stderr,"ldrdf: could not open '%s'\n",argv[2]); - perror("ldrdf"); - exit(1); - } - - fp2 = fopen(argv[3],"rb"); - if (! fp) - { - fprintf(stderr,"ldrdf: could not open '%s'\n",argv[3]); - perror("ldrdf"); - exit(1); - } - - p = argv[4]; - do { - if ( fputc(*p,fp) == EOF ) { - fprintf(stderr,"ldrdf: write error\n"); - exit(1); - } - } while (*p++); - - while (! feof (fp2) ) { - i = fgetc (fp2); - if (i == EOF) { - break; - } - - if ( fputc(i, fp) == EOF ) { - fprintf(stderr,"ldrdf: write error\n"); - exit(1); - } - } - fclose(fp2); - fclose(fp); - break; - - case 'x': - if (argc < 5) { - fprintf(stderr,"ldrdf: required parameter missing\n"); - exit(1); - } - - fp = fopen(argv[2],"rb"); - if (! fp) - { - fprintf(stderr,"ldrdf: could not open '%s'\n",argv[2]); - perror("ldrdf"); - exit(1); - } - - fp2 = NULL; - while (! feof(fp) ) { - /* read name */ - p = buf; - while( ( *(p++) = (char) fgetc(fp) ) ) - if (feof(fp)) break; - - if (feof(fp)) break; - - /* check against desired name */ - if (! strcmp(buf,argv[3]) ) - { - fp2 = fopen(argv[4],"wb"); - if (! fp2) - { - fprintf(stderr,"ldrdf: could not open '%s'\n", argv[4]); - perror("ldrdf"); - exit(1); - } - } - else - fp2 = NULL; - - /* step over the RDOFF file, copying it if fp2 != NULL */ - copybytes(fp,fp2,6); /* magic number */ - copybytes(fp,fp2, copylong(fp,fp2)); /* header */ - copybytes(fp,fp2, copylong(fp,fp2)); /* text */ - copybytes(fp,fp2, copylong(fp,fp2)); /* data */ - - if (fp2) - break; - } - fclose(fp); - if (fp2) - fclose(fp2); - else - { - fprintf(stderr,"ldrdf: module '%s' not found in '%s'\n", - argv[3],argv[2]); - exit(1); - } - break; - - default: - fprintf(stderr,"ldrdf: command '%c' not recognised\n", - argv[1][0]); - exit(1); - } - return 0; -} - diff --git a/rdoff/v1/rdfload.c b/rdoff/v1/rdfload.c deleted file mode 100644 index b848344..0000000 --- a/rdoff/v1/rdfload.c +++ /dev/null @@ -1,173 +0,0 @@ -/* rdfload.c RDOFF Object File loader library - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - * - * Permission to use this file in your own projects is granted, as long - * as acknowledgement is given in an appropriate manner to its authors, - * with instructions of how to obtain a copy via ftp. - */ - -#include <stdlib.h> -#include <stdio.h> - -#include "rdfload.h" -#include "symtab.h" -#include "rdoff.h" -#include "collectn.h" - -extern int rdf_errno; - -rdfmodule * rdfload(const char *filename) -{ - rdfmodule * f = malloc(sizeof(rdfmodule)); - long bsslength = 0; - char * hdr; - rdfheaderrec *r; - - if (f == NULL) - { - rdf_errno = 6; /* out of memory */ - return NULL; - } - - f->symtab = symtabNew(); - if (!f->symtab) - { - free(f); - rdf_errno = 6; - return NULL; - } - - /* open the file */ - if ( rdfopen( &(f->f), filename ) ) { - free(f); - return NULL; - } - - /* read in text and data segments, and header */ - - f->t = malloc (f->f.code_len); - f->d = malloc (f->f.data_len); /* BSS seg allocated later */ - hdr = malloc (f->f.header_len); - - if (! f->t || ! f->d || !hdr) { - rdf_errno = 6; - rdfclose(&f->f); - if (f->t) free(f->t); - if (f->d) free(f->d); - free(f); - return NULL; - } - - if ( rdfloadseg (&f->f,RDOFF_HEADER,hdr) || - rdfloadseg (&f->f,RDOFF_CODE,f->t) || - rdfloadseg (&f->f,RDOFF_DATA,f->d) ) - { - rdfclose(&f->f); - free(f->t); - free(f->d); - free(f); - free(hdr); - return NULL; - } - - rdfclose(&f->f); - - /* Allocate BSS segment; step through header and count BSS records */ - - while ( ( r = rdfgetheaderrec (&f->f) ) ) - { - if (r->type == 5) - bsslength += r->b.amount; - } - - f->b = malloc ( bsslength ); - if (! f->b ) - { - free(f->t); - free(f->d); - free(f); - free(hdr); - rdf_errno = 6; - return NULL; - } - - rdfheaderrewind (&f->f); - - f->textrel = (long)f->t; - f->datarel = (long)f->d; - f->bssrel = (long)f->b; - - return f; -} - -int rdf_relocate(rdfmodule * m) -{ - rdfheaderrec * r; - Collection imports; - symtabEnt e; - long rel; - unsigned char * seg; - - rdfheaderrewind ( & m->f ); - collection_init(&imports); - - while ( (r = rdfgetheaderrec ( & m->f ) ) ) - { - switch (r->type) - { - case 1: /* Relocation record */ - - /* calculate relocation factor */ - - if (r->r.refseg == 0) rel = m->textrel; - else if (r->r.refseg == 1) rel = m->datarel; - else if (r->r.refseg == 2) rel = m->bssrel; - else - /* We currently do not support load-time linkage. - This should be added some time soon... */ - - return 1; /* return error code */ - - if ((r->r.segment & 63) == 0) seg = m->t; - else if ((r->r.segment & 63) == 1) seg = m->d; - else - return 1; - - /* it doesn't matter in this case that the code is non-portable, - as the entire concept of executing a module like this is - non-portable */ - switch(r->r.length) { - case 1: - seg[r->r.offset] += (char) rel; - break; - case 2: - *(int16 *)(seg + r->r.offset) += (int16) rel; - break; - case 4: - *(long *)(seg + r->r.offset) += rel; - break; - } - break; - - case 3: /* export record - add to symtab */ - e.segment = r->e.segment; - e.offset = r->e.offset + - (e.segment == 0 ? m->textrel : /* 0 -> code */ - e.segment == 1 ? m->datarel : /* 1 -> data */ - m->bssrel) ; /* 2 -> bss */ - e.flags = 0; - e.name = malloc(strlen(r->e.label) + 1); - if (! e.name) - return 1; - - strcpy(e.name,r->e.label); - symtabInsert(m->symtab,&e); - break; - } - } - return 0; -} diff --git a/rdoff/v1/rdfload.h b/rdoff/v1/rdfload.h deleted file mode 100644 index 5e264b9..0000000 --- a/rdoff/v1/rdfload.h +++ /dev/null @@ -1,29 +0,0 @@ -/* rdfload.h RDOFF Object File loader library header file - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - * - * See the file 'rdfload.c' for special license information for this - * file. - */ - -#ifndef _RDFLOAD_H -#define _RDFLOAD_H - -#include "rdoff.h" - -typedef struct RDFModuleStruct { - rdffile f; /* file structure */ - unsigned char * t, * d, * b; /* text, data, and bss segments */ - long textrel; - long datarel; - long bssrel; - void * symtab; -} rdfmodule; - -rdfmodule * rdfload(const char * filename); -int rdf_relocate(rdfmodule * m); - -#endif diff --git a/rdoff/v1/rdlib.c b/rdoff/v1/rdlib.c deleted file mode 100644 index bc8d1e3..0000000 --- a/rdoff/v1/rdlib.c +++ /dev/null @@ -1,88 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> - -#include "rdoff.h" -#include "rdlib.h" - -int rdl_error = 0; - -char *rdl_errors[3] = { - "no error","could not open file", "invalid file structure", -}; - -int rdl_searchlib (struct librarynode * lib, - const char * label, rdffile * f) -{ - char buf[257]; - int i; - void * hdr; - rdfheaderrec * r; - - rdl_error = 0; - lib->referenced ++; - - if (! lib->fp) - { - lib->fp = fopen(lib->name,"rb"); - - if (! lib->fp) { - rdl_error = 1; - return 0; - } - } - else - rewind(lib->fp); - - while (! feof(lib->fp) ) - { - i = 1; - while (fread(buf + i,1,1,lib->fp) == 1 && buf[i] && i < 257) - i++; - buf[0] = ':'; - - if (feof(lib->fp)) break; - - if ( rdfopenhere(f,lib->fp,&lib->referenced,buf) ) { - rdl_error = 2; - return 0; - } - - hdr = malloc(f->header_len); - rdfloadseg(f,RDOFF_HEADER,hdr); - - while ((r = rdfgetheaderrec(f))) - { - if (r->type != 3) /* not an export */ - continue; - - if (! strcmp(r->e.label, label) ) /* match! */ - { - free(hdr); /* reset to 'just open' */ - f->header_loc = NULL; /* state... */ - f->header_fp = 0; - return 1; - } - } - - /* find start of next module... */ - i = f->data_ofs + f->data_len; - rdfclose(f); - fseek(lib->fp,i,SEEK_SET); - } - - lib->referenced --; - if (! lib->referenced) - { - fclose(lib->fp); - lib->fp = NULL; - } - return 0; -} - -void rdl_perror(const char *apname, const char *filename) -{ - fprintf(stderr,"%s:%s:%s\n",apname,filename,rdl_errors[rdl_error]); -} - - - diff --git a/rdoff/v1/rdlib.h b/rdoff/v1/rdlib.h deleted file mode 100644 index 94592ce..0000000 --- a/rdoff/v1/rdlib.h +++ /dev/null @@ -1,18 +0,0 @@ -/* rdlib.h Functions for manipulating librarys of RDOFF object files */ - - -struct librarynode { - char * name; - FILE * fp; /* initialised to NULL - always check*/ - int referenced; /* & open if required. Close afterwards */ - struct librarynode * next; /* if ! referenced. */ -}; - - -extern int rdl_error; - -int rdl_searchlib (struct librarynode * lib, - const char * label, rdffile * f); -void rdl_perror(const char *apname, const char *filename); - - diff --git a/rdoff/v1/rdoff.c b/rdoff/v1/rdoff.c deleted file mode 100644 index 96620ec..0000000 --- a/rdoff/v1/rdoff.c +++ /dev/null @@ -1,397 +0,0 @@ -/* rdoff.c library of routines for manipulating rdoff files - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - */ - -/* TODO: The functions in this module assume they are running - * on a little-endian machine. This should be fixed to - * make it portable. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> - -#include "rdoff.h" - -#define newstr(str) strcpy(malloc(strlen(str) + 1),str) -#define newstrcat(s1,s2) strcat(strcpy(malloc(strlen(s1) + strlen(s2) + 1), \ - s1),s2) - -/* ======================================================================== - * Code for memory buffers (for delayed writing of header until we know - * how long it is). - * ======================================================================== */ - - -memorybuffer * newmembuf(){ - memorybuffer * t; - - t = malloc(sizeof(memorybuffer)); - - t->length = 0; - t->next = NULL; - return t; -} - -void membufwrite(memorybuffer *b, void *data, int bytes) { - int16 w; - long l; - - if (b->next) { /* memory buffer full - use next buffer */ - membufwrite(b->next,data,bytes); - return; - } - if ((bytes < 0 && b->length - bytes > BUF_BLOCK_LEN) - || (bytes > 0 && b->length + bytes > BUF_BLOCK_LEN)) { - - /* buffer full and no next allocated... allocate and initialise next - * buffer */ - - b->next = newmembuf(); - membufwrite(b->next,data,bytes); - } - - switch(bytes) { - case -4: /* convert to little-endian */ - l = * (long *) data ; - b->buffer[b->length++] = l & 0xFF; - l >>= 8 ; - b->buffer[b->length++] = l & 0xFF; - l >>= 8 ; - b->buffer[b->length++] = l & 0xFF; - l >>= 8 ; - b->buffer[b->length++] = l & 0xFF; - break; - - case -2: - w = * (int16 *) data ; - b->buffer[b->length++] = w & 0xFF; - w >>= 8 ; - b->buffer[b->length++] = w & 0xFF; - break; - - default: - while(bytes--) { - b->buffer[b->length++] = *(* (unsigned char **) &data); - - (* (unsigned char **) &data)++ ; - } - break; - } -} - -void membufdump(memorybuffer *b,FILE *fp) -{ - if (!b) return; - - fwrite (b->buffer, 1, b->length, fp); - - membufdump(b->next,fp); -} - -int membuflength(memorybuffer *b) -{ - if (!b) return 0; - return b->length + membuflength(b->next); -} - -void freemembuf(memorybuffer *b) -{ - if (!b) return; - freemembuf(b->next); - free(b); -} - -/* ========================================================================= - General purpose routines and variables used by the library functions - ========================================================================= */ - -long translatelong(long in) { /* translate from little endian to - local representation */ - long r; - unsigned char *i; - - i = (unsigned char *)∈ - r = i[3]; - r = (r << 8) + i[2]; - r = (r << 8) + i[1]; - r = (r << 8) + *i; - - return r; -} - -const char *RDOFFId = "RDOFF1"; /* written to the start of RDOFF files */ - -const char *rdf_errors[7] = { - "no error occurred","could not open file","invalid file format", - "error reading file","unknown error","header not read", - "out of memory"}; - -int rdf_errno = 0; - -/* ======================================================================== - The library functions - ======================================================================== */ - -int rdfopen(rdffile *f, const char *name) -{ - FILE * fp; - - fp = fopen(name,"rb"); - if (!fp) return rdf_errno = 1; /* error 1: file open error */ - - return rdfopenhere(f,fp,NULL,""); -} - -int rdfopenhere(rdffile *f, FILE *fp, int *refcount, char *name) -{ - char buf[8]; - long initpos; - - if (translatelong(0x01020304) != 0x01020304) - { /* fix this to be portable! */ - fputs("*** this program requires a little endian machine\n",stderr); - fprintf(stderr,"01020304h = %08lxh\n",translatelong(0x01020304)); - exit(3); - } - - f->fp = fp; - initpos = ftell(fp); - - fread(buf,6,1,f->fp); /* read header */ - buf[6] = 0; - - if (strcmp(buf,RDOFFId)) { - fclose(f->fp); - return rdf_errno = 2; /* error 2: invalid file format */ - } - - if (fread(&f->header_len,1,4,f->fp) != 4) { - fclose(f->fp); - return rdf_errno = 3; /* error 3: file read error */ - } - - f->header_ofs = ftell(f->fp); - - if (fseek(f->fp,f->header_len,SEEK_CUR)) { - fclose(f->fp); - return rdf_errno = 2; /* seek past end of file...? */ - } - - if (fread(&f->code_len,1,4,f->fp) != 4) { - fclose(f->fp); - return rdf_errno = 3; - } - - f->code_ofs = ftell(f->fp); - if (fseek(f->fp,f->code_len,SEEK_CUR)) { - fclose(f->fp); - return rdf_errno = 2; - } - - if (fread(&f->data_len,1,4,f->fp) != 4) { - fclose(f->fp); - return rdf_errno = 3; - } - - f->data_ofs = ftell(f->fp); - fseek(f->fp,initpos,SEEK_SET); - f->header_loc = NULL; - - f->name = newstr(name); - f->refcount = refcount; - if (refcount) (*refcount)++; - return 0; -} - -int rdfclose(rdffile *f) -{ - if (! f->refcount || ! *--f->refcount) - fclose(f->fp); - free(f->name); - - return 0; -} - -void rdfperror(const char *app,const char *name) -{ - fprintf(stderr,"%s:%s: %s\n",app,name,rdf_errors[rdf_errno]); - if (rdf_errno == 1 || rdf_errno == 3) - { - perror(app); - } - -} - -int rdfloadseg(rdffile *f,int segment,void *buffer) -{ - long fpos; - long slen; - - switch(segment) { - case RDOFF_HEADER: - fpos = f->header_ofs; - slen = f->header_len; - f->header_loc = (char *)buffer; - f->header_fp = 0; - break; - case RDOFF_CODE: - fpos = f->code_ofs; - slen = f->code_len; - break; - case RDOFF_DATA: - fpos = f->data_ofs; - slen = f->data_len; - break; - default: - fpos = 0; - slen = 0; - } - - if (fseek(f->fp,fpos,SEEK_SET)) - return rdf_errno = 4; - - if (fread(buffer,1,slen,f->fp) != slen) - return rdf_errno = 3; - - return 0; -} - -/* Macros for reading integers from header in memory */ - -#define RI8(v) v = f->header_loc[f->header_fp++] -#define RI16(v) { v = (f->header_loc[f->header_fp] + \ - (f->header_loc[f->header_fp+1] << 8)); \ - f->header_fp += 2; } - -#define RI32(v) { v = (f->header_loc[f->header_fp] + \ - (f->header_loc[f->header_fp+1] << 8) + \ - (f->header_loc[f->header_fp+2] << 16) + \ - (f->header_loc[f->header_fp+3] << 24)); \ - f->header_fp += 4; } - -#define RS(str,max) { for(i=0;i<max;i++){\ - RI8(str[i]); if (!str[i]) break;} str[i]=0; } - -rdfheaderrec *rdfgetheaderrec(rdffile *f) -{ - static rdfheaderrec r; - int i; - - if (!f->header_loc) { - rdf_errno = 5; - return NULL; - } - - if (f->header_fp >= f->header_len) return 0; - - RI8(r.type); - switch(r.type) { - case 1: /* Relocation record */ - RI8(r.r.segment); - RI32(r.r.offset); - RI8(r.r.length); - RI16(r.r.refseg); - break; - - case 2: /* Imported symbol record */ - RI16(r.i.segment); - RS(r.i.label,32); - break; - - case 3: /* Exported symbol record */ - RI8(r.e.segment); - RI32(r.e.offset); - RS(r.e.label,32); - break; - - case 4: /* DLL record */ - RS(r.d.libname,127); - break; - - case 5: /* BSS reservation record */ - RI32(r.b.amount); - break; - - default: - rdf_errno = 2; /* invalid file */ - return NULL; - } - return &r; -} - -void rdfheaderrewind(rdffile *f) -{ - f->header_fp = 0; -} - - -rdf_headerbuf * rdfnewheader(void) -{ - return newmembuf(); -} - -int rdfaddheader(rdf_headerbuf * h, rdfheaderrec * r) -{ - switch (r->type) - { - case 1: - membufwrite(h,&r->type,1); - membufwrite(h,&r->r.segment,1); - membufwrite(h,&r->r.offset,-4); - membufwrite(h,&r->r.length,1); - membufwrite(h,&r->r.refseg,-2); /* 9 bytes written */ - break; - - case 2: /* import */ - membufwrite(h,&r->type,1); - membufwrite(h,&r->i.segment,-2); - membufwrite(h,&r->i.label,strlen(r->i.label) + 1); - break ; - - case 3: /* export */ - membufwrite(h,&r->type,1); - membufwrite(h,&r->e.segment,1); - membufwrite(h,&r->e.offset,-4); - membufwrite(h,&r->e.label,strlen(r->e.label) + 1); - break ; - - case 4: /* DLL */ - membufwrite(h,&r->type,1); - membufwrite(h,&r->d.libname,strlen(r->d.libname) + 1); - break ; - - case 5: /* BSS */ - membufwrite(h,&r->type,1); - membufwrite(h,&r->b.amount,-4); - break ; - - default: - return (rdf_errno = 2); - } - return 0; -} - -int rdfwriteheader(FILE * fp, rdf_headerbuf * h) -{ - long l; - - fwrite (RDOFFId, 1, strlen(RDOFFId), fp) ; - - l = translatelong ( membuflength (h) ); - fwrite (&l, 4, 1, fp); - - membufdump(h, fp); - - return 0; /* no error handling in here... CHANGE THIS! */ -} - -void rdfdoneheader(rdf_headerbuf * h) -{ - freemembuf(h); -} diff --git a/rdoff/v1/rdoff.h b/rdoff/v1/rdoff.h deleted file mode 100644 index 0f74b80..0000000 --- a/rdoff/v1/rdoff.h +++ /dev/null @@ -1,118 +0,0 @@ -/* rdoff.h RDOFF Object File manipulation routines header file - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - */ - -#ifndef _RDOFF_H -#define _RDOFF_H "RDOFF1 support routines v0.1" - -typedef short int16; /* not sure if this will be required to be altered - at all... best to typedef it just in case */ - -/* the records that can be found in the RDOFF header */ - -struct RelocRec { - char type; /* must be 1 */ - char segment; /* only 0 for code, or 1 for data supported, - but add 64 for relative refs (ie do not require - reloc @ loadtime, only linkage) */ - long offset; /* from start of segment in which reference is loc'd */ - char length; /* 1 2 or 4 bytes */ - int16 refseg; /* segment to which reference refers to */ -}; - -struct ImportRec { - char type; /* must be 2 */ - int16 segment; /* segment number allocated to the label for reloc - records - label is assumed to be at offset zero - in this segment, so linker must fix up with offset - of segment and of offset within segment */ - char label[33]; /* zero terminated... should be written to file until - the zero, but not after it - max len = 32 chars */ -}; - -struct ExportRec { - char type; /* must be 3 */ - char segment; /* segment referred to (0/1) */ - long offset; /* offset within segment */ - char label[33]; /* zero terminated as above. max len = 32 chars */ -}; - -struct DLLRec { - char type; /* must be 4 */ - char libname[128]; /* name of library to link with at load time */ -}; - -struct BSSRec { - char type; /* must be 5 */ - long amount; /* number of bytes BSS to reserve */ -}; - -typedef union RDFHeaderRec { - char type; /* invariant throughout all below */ - struct RelocRec r; /* type == 1 */ - struct ImportRec i; /* type == 2 */ - struct ExportRec e; /* type == 3 */ - struct DLLRec d; /* type == 4 */ - struct BSSRec b; /* type == 5 */ -} rdfheaderrec; - -typedef struct RDFFileInfo { - FILE *fp; /* file descriptor; must be open to use this struct */ - int rdoff_ver; /* should be 1; any higher => not guaranteed to work */ - long header_len; - long code_len; - long data_len; - long header_ofs; - long code_ofs; - long data_ofs; - char *header_loc; /* keep location of header */ - long header_fp; /* current location within header for reading */ - char *name; /* name of module in libraries */ - int *refcount; /* pointer to reference count on file, or NULL */ -} rdffile; - -#define BUF_BLOCK_LEN 4088 /* selected to match page size (4096) - * on 80x86 machines for efficiency */ -typedef struct memorybuffer { - int length; - char buffer[BUF_BLOCK_LEN]; - struct memorybuffer *next; -} memorybuffer; - -typedef memorybuffer rdf_headerbuf; - -/* segments used by RDOFF, understood by rdoffloadseg */ -#define RDOFF_CODE 0 -#define RDOFF_DATA 1 -#define RDOFF_HEADER -1 -/* mask for 'segment' in relocation records to find if relative relocation */ -#define RDOFF_RELATIVEMASK 64 -/* mask to find actual segment value in relocation records */ -#define RDOFF_SEGMENTMASK 63 - -extern int rdf_errno; - -/* RDOFF file manipulation functions */ -int rdfopen(rdffile *f,const char *name); -int rdfopenhere(rdffile *f, FILE *fp, int *refcount, char *name); -int rdfclose(rdffile *f); -int rdfloadseg(rdffile *f,int segment,void *buffer); -rdfheaderrec *rdfgetheaderrec(rdffile *f); /* returns static storage */ -void rdfheaderrewind(rdffile *f); /* back to start of header */ -void rdfperror(const char *app,const char *name); - -/* functions to write a new RDOFF header to a file - - use rdfnewheader to allocate a header, rdfaddheader to add records to it, - rdfwriteheader to write 'RDOFF1', length of header, and the header itself - to a file, and then rdfdoneheader to dispose of the header */ - -rdf_headerbuf *rdfnewheader(void); -int rdfaddheader(rdf_headerbuf *h,rdfheaderrec *r); -int rdfwriteheader(FILE *fp,rdf_headerbuf *h); -void rdfdoneheader(rdf_headerbuf *h); - -#endif /* _RDOFF_H */ diff --git a/rdoff/v1/rdoff.txt b/rdoff/v1/rdoff.txt deleted file mode 100644 index 7ee86d6..0000000 --- a/rdoff/v1/rdoff.txt +++ /dev/null @@ -1,114 +0,0 @@ -The RDOFF version 1.1 Object File Format -======================================== - -I seem to keep writing this document... I don't know what keeps -happening to it. Anyway, this one will hopefully stay around for a -while. - -RDOFF is a relocatable object file format whose design goals were -mainly to keep it simple, so that an RDOFF object can be loaded and -executed by a very small piece of code (primarily so that it can be -used by the microkernel of an operating system to store system -modules, which can then go on to load and execute more complex object -files, eg ELF, if so desired), yet still be able to be cope with -everything required by the operating system; linkage of multiple -modules together (possibly with automatic loading of new libraries -that are referred to by the object) at load time, allowing static or -dynamic linking as required by the application. - -The overall format of the file is summarised in this table: - -Length (bytes) Description - 6 Contains the string 'RDOFF1' (little-endian targets), - or 'RDOFF' followed by the single byte 0x01 - (big-endian targets). - 4 Length of the header section - ? Header section (see above for length) - 4 Length of code section (.text) - ? Code section - 4 Length of data section (.data) - ? Data section - -Segments are referred to as numbers. Imported labels are implicitly -at offset zero from a segment; each is assigned a segment number when -it is imported. Segments in the object file itself are numbered: - 0 - text segemnt - 1 - data segment - 2 - bss segment - -The header consists of a sequence of records, each of which is -preceded by a byte to represent its type. - -These records are one of the following types: - -1: Relocation Record --------------------- - - This record points to an address that will need either - relocation or linkage to an external segment when the object - is loaded or linked. - - Length Description - 1 Type identifier (must be 1) - 1 Segment number (0 or 1) plus 64 if the reference is - relative (and thus does not require relocation with - the base of the code, only by the difference between - the start of this segment, and the segment referred to - (see below) - 4 Offset from start of segment of item requiring reloc. - 1 Length of item (1, 2, or 4 bytes...) - 2 Segment number to which reference is made. - -2: Import Symbol Record ------------------------ - - This record defines a segment to start at the location of a - named symbol; this symbol may need to be fetched from an - external library. - - Length Description - 1 Type identifier (must be 2) - 2 Segment number to allocate - ? String containing label (null terminated, max length = - 32 chars) - -3: Export Symbol Record ------------------------ - - This record defines a symbol, to which external modules can - link using the above record type. - - Length Description - 1 Type identifier (must be 3) - 1 Segment containing symbol (0,1 or 2) - 4 Offset of symbol within segment - ? String containing label (null terminated, max length = - 32 chars) - -4: Import Library Record ------------------------- - - This record tells the loader that an extra library should be - loaded and linked to the module at either load- or run-time - (load time is easier, run-time is good, though...) - - Length Description - 1 Type identifier (must be 4) - ? Name of library (null terminated string, max len = 128) - -5: Reserve BSS Bytes --------------------- - - This record tells the loader how much memory to reserve after - the executable code loaded from the object file for the BSS - segment (referred to as segment number 2). - A loader can safely assume that there will only be one of - these records per module, but the linker probably cannot... - NASM will only output one, but other utilities may be written - that do, and future versions of NASM may output more than one. - - Length Description - 1 Type identifier (must be 5) - 4 Number of bytes to reserve - - diff --git a/rdoff/v1/rdx.c b/rdoff/v1/rdx.c deleted file mode 100644 index 28ffc42..0000000 --- a/rdoff/v1/rdx.c +++ /dev/null @@ -1,61 +0,0 @@ -/* rdx.c RDOFF Object File loader program - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - */ - -/* note: most of the actual work of this program is done by the modules - "rdfload.c", which loads and relocates the object file, and by "rdoff.c", - which contains general purpose routines to manipulate RDOFF object - files. You can use these files in your own program to load RDOFF objects - and execute the code in them in a similar way to what is shown here. */ - -#include <stdio.h> -#include <stdlib.h> - -#include "rdfload.h" -#include "rdoff.h" -#include "symtab.h" - -typedef int (*main_fn) (int,char**); /* Main function prototype */ - -int main(int argc, char **argv) -{ - rdfmodule * m; - main_fn code; - symtabEnt * s; - - if (argc < 2) - { - puts("usage: rdf <rdoff-executable> [params]\n"); - exit(255); - } - - m = rdfload(argv[1]); - - if (! m) - { - rdfperror("rdf",argv[1]); - exit(255); - } - - rdf_relocate(m); /* in this instance, the default relocation - values will work fine, but they may need changing - in other cases... */ - - s = symtabFind(m->symtab, "_main"); - if (! s) - { - fprintf(stderr,"rdx: could not find symbol '_main' in '%s'\n",argv[1]); - exit(255); - } - - code = (main_fn) s->offset; - - argv++, argc--; /* remove 'rdx' from command line */ - - return code(argc,argv); /* execute */ -} - diff --git a/rdoff/v1/symtab.c b/rdoff/v1/symtab.c deleted file mode 100644 index 3fc363e..0000000 --- a/rdoff/v1/symtab.c +++ /dev/null @@ -1,80 +0,0 @@ -/* symtab.c Routines to maintain and manipulate a symbol table - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - */ -#include <stdio.h> -#include <stdlib.h> - -#include "symtab.h" - -/* TODO: Implement a hash table, not this stupid implementation which - is too slow to be of practical use */ - -/* Private data types */ - -typedef struct tagSymtab { - symtabEnt ent; - struct tagSymtab * next; -} symtabList; - -typedef symtabList * _symtab; - -void *symtabNew(void) -{ - void *p = malloc(sizeof(_symtab)); - if (p == NULL) { - fprintf(stderr,"symtab: out of memory\n"); - exit(3); - } - *(_symtab *)p = NULL; - - return p; -} - -void symtabDone(void *symtab) -{ - /* DO SOMETHING HERE! */ -} - -void symtabInsert(void *symtab,symtabEnt *ent) -{ - symtabList *l = malloc(sizeof(symtabList)); - - if (l == NULL) { - fprintf(stderr,"symtab: out of memory\n"); - exit(3); - } - - l->ent = *ent; - l->next = *(_symtab *)symtab; - *(_symtab *)symtab = l; -} - -symtabEnt *symtabFind(void *symtab,char *name) -{ - symtabList *l = *(_symtab *)symtab; - - while (l) { - if (!strcmp(l->ent.name,name)) { - return &(l->ent); - } - l = l->next; - } - return NULL; -} - -void symtabDump(void *symtab,FILE *of) -{ - symtabList *l = *(_symtab *)symtab; - - while(l) { - fprintf(of,"%32s %s:%08lx (%ld)\n",l->ent.name, - l->ent.segment ? "data" : "code" , - l->ent.offset, l->ent.flags); - l = l->next; - } -} - diff --git a/rdoff/v1/symtab.h b/rdoff/v1/symtab.h deleted file mode 100644 index 5780d44..0000000 --- a/rdoff/v1/symtab.h +++ /dev/null @@ -1,22 +0,0 @@ -/* symtab.h Header file for symbol table manipulation routines - * - * The Netwide Assembler is copyright (C) 1996 Simon Tatham and - * Julian Hall. All rights reserved. The software is - * redistributable under the licence given in the file "Licence" - * distributed in the NASM archive. - */ - -typedef struct { - char *name; - long segment; - long offset; - long flags; -} symtabEnt; - -void *symtabNew(void); -void symtabDone(void *symtab); -void symtabInsert(void *symtab,symtabEnt *ent); -symtabEnt *symtabFind(void *symtab,char *name); -void symtabDump(void *symtab,FILE *of); - - diff --git a/scitech.txt b/scitech.txt deleted file mode 100644 index 049694f..0000000 --- a/scitech.txt +++ /dev/null @@ -1,213 +0,0 @@ - - The Netwide Assembler: NASM - =========================== - --------------------------------------------------------------------------------- - SciTech MGL Modifications --------------------------------------------------------------------------------- - -All changes can be compiled in and out using the TASM_COMPAT macros, -and when compiled without TASM_COMPAT defined we get the exact same -binary as the unmodified 0.98 sources. - -standard.mac: -macros.c: - . Added macros to ignore TASM directives before first include - -nasm.h: - . Added extern declaration for tasm_compatible_mode - -nasm.c: - . Added global variable tasm_compatible_mode - . Added command line switch for TASM compatible mode (-t) - . Changed version command line to reflect when compiled with TASM additions - . Added response file processing to allow all arguments on a single - line (response file is @resp rather than -@resp for NASM format). - -labels.c: - . Changes islocal() macro to support TASM style @@local labels. - . Added islocalchar() macro to support TASM style @@local labels. - -parser.c: - . Added support for TASM style memory references (ie: mov [DWORD eax],10 - rather than the NASM style mov DWORD [eax],10). - -preproc.c: - . Added new directives, %arg, %local, %stacksize to directives table - . Added support for TASM style directives without a leading % symbol. - --------------------------------------------------------------------------------- - Integrated a block of changes from Andrew Zabolotny <bit@eltech.ru>: --------------------------------------------------------------------------------- - --*- A new keyword %xdefine and its case-insensitive counterpart %ixdefine. - They work almost the same way as %define and %idefine but expand - the definition immediately, not on the invocation. Something like a cross - between %define and %assign. The "x" suffix stands for "eXpand", so - "xdefine" can be deciphered as "expand-and-define". Thus you can do - things like this: - - %assign ofs 0 - - %macro arg 1 - %xdefine %1 dword [esp+ofs] - %assign ofs ofs+4 - %endmacro - --*- Changed the place where the expansion of %$name macros are expanded. - Now they are converted into ..@ctxnum.name form when detokenizing, so - there are no quirks as before when using %$name arguments to macros, - in macros etc. For example: - - %macro abc 1 - %define %1 hello - %endm - - abc %$here - %$here - - Now last line will be expanded into "hello" as expected. This also allows - for lots of goodies, a good example are extended "proc" macros included - in this archive. - --*- Added a check for "cstk" in smacro_defined() before calling get_ctx() - - this allows for things like: - - %ifdef %$abc - %endif - - to work without warnings even in no context. - --*- Added a check for "cstk" in %if*ctx and %elif*ctx directives - - this allows to use %ifctx without excessive warnings. If there is - no active context, %ifctx goes through "false" branch. - --*- Removed "user error: " prefix with %error directive: it just clobbers the - output and has absolutely no functionality. Besides, this allows to write - macros that does not differ from built-in functions in any way. - --*- Added expansion of string that is output by %error directive. Now you - can do things like: - - %define hello(x) Hello, x! - - %define %$name andy - %error "hello(%$name)" - - Same happened with %include directive. - --*- Now all directives that expect an identifier will try to expand and - concatenate everything without whitespaces in between before usage. - For example, with "unfixed" nasm the commands - - %define %$abc hello - %define __%$abc goodbye - __%$abc - - would produce "incorrect" output: last line will expand to - - hello goodbyehello - - Not quite what you expected, eh? :-) The answer is that preprocessor - treats the %define construct as if it would be - - %define __ %$abc goodbye - - (note the white space between __ and %$abc). After my "fix" it - will "correctly" expand into - - goodbye - - as expected. Note that I use quotes around words "correct", "incorrect" - etc because this is rather a feature not a bug; however current behaviour - is more logical (and allows more advanced macro usage :-). - - Same change was applied to: - %push,%macro,%imacro,%define,%idefine,%xdefine,%ixdefine, - %assign,%iassign,%undef - --*- A new directive [WARNING {+|-}warning-id] have been added. It works only - if the assembly phase is enabled (i.e. it doesn't work with nasm -e). - --*- A new warning type: macro-selfref. By default this warning is disabled; - when enabled NASM warns when a macro self-references itself; for example - the following source: - - [WARNING macro-selfref] - - %macro push 1-* - %rep %0 - push %1 - %rotate 1 - %endrep - %endmacro - - push eax,ebx,ecx - - will produce a warning, but if we remove the first line we won't see it - anymore (which is The Right Thing To Do {tm} IMHO since C preprocessor - eats such constructs without warnings at all). - --*- Added a "error" routine to preprocessor which always will set ERR_PASS1 - bit in severity_code. This removes annoying repeated errors on first - and second passes from preprocessor. - --*- Added the %+ operator in single-line macros for concatenating two - identifiers. Usage example: - - %define _myfunc _otherfunc - %define cextern(x) _ %+ x - cextern (myfunc) - - After first expansion, third line will become "_myfunc". After this - expansion is performed again so it becomes "_otherunc". - --*- Now if preprocessor is in a non-emmitting state, no warning or error - will be emmitted. Example: - - %if 1 - mov eax,ebx - %else - put anything you want between these two brackets, - even macro-parameter references %1 or local labels %$zz - or macro-local labels %%zz - no warning will be emmitted. - %endif - --*- Context-local variables on expansion as a last resort are looked up - in outer contexts. For example, the following piece: - - %push outer - %define %$a [esp] - - %push inner - %$a - %pop - %pop - - will expand correctly the fourth line to [esp]; if we'll define another - %$a inside the "inner" context, it will take precedence over outer - definition. However, this modification has been applied only to - expand_smacro and not to smacro_define: as a consequence expansion - looks in outer contexts, but %ifdef won't look in outer contexts. - - This behaviour is needed because we don't want nested contexts to - act on already defined local macros. Example: - - %define %$arg1 [esp+4] - test eax,eax - if nz - mov eax,%$arg1 - endif - - In this example the "if" mmacro enters into the "if" context, so %$arg1 - is not valid anymore inside "if". Of course it could be worked around - by using explicitely %$$arg1 but this is ugly IMHO. - --*- Fixed memory leak in %undef. The origline wasn't freed before - exiting on success. - --*- Fixed trap in preprocessor when line expanded to empty set of tokens. - This happens, for example, in the following case: - - #define SOMETHING - SOMETHING |