diff options
Diffstat (limited to 'gas/as.c')
-rw-r--r-- | gas/as.c | 1017 |
1 files changed, 0 insertions, 1017 deletions
diff --git a/gas/as.c b/gas/as.c deleted file mode 100644 index 8bb0b8cf173..00000000000 --- a/gas/as.c +++ /dev/null @@ -1,1017 +0,0 @@ -/* as.c - GAS main program. - Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 - Free Software Foundation, Inc. - - This file is part of GAS, the GNU Assembler. - - GAS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GAS 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to the Free - Software Foundation, 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ - -/* - * Main program for AS; a 32-bit assembler of GNU. - * Understands command arguments. - * Has a few routines that don't fit in other modules because they - * are shared. - * - * - * bugs - * - * : initialisers - * Since no-one else says they will support them in future: I - * don't support them now. - * - */ - -#include "ansidecl.h" - -#define COMMON - -#include "as.h" -#include "subsegs.h" -#include "output-file.h" -#include "sb.h" -#include "macro.h" - -#ifndef HAVE_ITBL_CPU -#define itbl_parse(itbl_file) 1 -#define itbl_init() -#endif - -#ifdef HAVE_SBRK -#ifdef NEED_DECLARATION_SBRK -extern PTR sbrk (); -#endif -#endif - -static void show_usage PARAMS ((FILE *)); -static void parse_args PARAMS ((int *, char ***)); -static void dump_statistics PARAMS ((void)); -static void perform_an_assembly_pass PARAMS ((int argc, char **argv)); -static int macro_expr PARAMS ((const char *, int, sb *, int *)); - -int listing; /* true if a listing is wanted */ - -static char *listing_filename = NULL; /* Name of listing file. */ - -/* Type of debugging to generate. */ - -enum debug_info_type debug_type = DEBUG_NONE; - -/* Maximum level of macro nesting. */ - -int max_macro_nest = 100; - -char *myname; /* argv[0] */ -#ifdef BFD_ASSEMBLER -segT reg_section, expr_section; -segT text_section, data_section, bss_section; -#endif - -/* The default obstack chunk size. If we set this to zero, the - obstack code will use whatever will fit in a 4096 byte block. */ -int chunksize = 0; - -/* To monitor memory allocation more effectively, make this non-zero. - Then the chunk sizes for gas and bfd will be reduced. */ -int debug_memory = 0; - -/* We build a list of defsyms as we read the options, and then define - them after we have initialized everything. */ - -struct defsym_list -{ - struct defsym_list *next; - char *name; - valueT value; -}; - -static struct defsym_list *defsyms; - -/* Keep a record of the itbl files we read in. */ - -struct itbl_file_list -{ - struct itbl_file_list *next; - char *name; -}; - -static struct itbl_file_list *itbl_files; - -void -print_version_id () -{ - static int printed; - if (printed) - return; - printed = 1; - -#ifdef BFD_ASSEMBLER - fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"), - VERSION, TARGET_ALIAS, BFD_VERSION); -#else - fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS); -#endif - fprintf (stderr, "\n"); -} - -static void -show_usage (stream) - FILE *stream; -{ - fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname); - - fprintf (stream, _("\ -Options:\n\ - -a[sub-option...] turn on listings\n\ - Sub-options [default hls]:\n\ - c omit false conditionals\n\ - d omit debugging directives\n\ - h include high-level source\n\ - l include assembly\n\ - m include macro expansions\n\ - n omit forms processing\n\ - s include symbols\n\ - L include line debug statistics (if applicable)\n\ - =file set listing file name (must be last sub-option)\n")); - - fprintf (stream, _("\ - -D produce assembler debugging messages\n\ - --defsym SYM=VAL define symbol SYM to given value\n\ - -f skip whitespace and comment preprocessing\n\ - --gstabs generate stabs debugging information\n\ - --help show this message and exit\n\ - -I DIR add DIR to search list for .include directives\n\ - -J don't warn about signed overflow\n\ - -K warn when differences altered for long displacements\n\ - -L,--keep-locals keep local symbols (e.g. starting with `L')\n")); - - fprintf (stream, _("\ - -M,--mri assemble in MRI compatibility mode\n\ - --MD FILE write dependency information in FILE (default none)\n\ - -nocpp ignored\n\ - -o OBJFILE name the object-file output OBJFILE (default a.out)\n\ - -R fold data section into text section\n\ - --statistics print various measured statistics from execution\n\ - --strip-local-absolute strip local absolute symbols\n\ - --traditional-format Use same format as native assembler when possible\n\ - --version print assembler version number and exit\n\ - -W suppress warnings\n\ - --itbl INSTTBL extend instruction set to include instructions\n\ - matching the specifications defined in file INSTTBL\n\ - -w ignored\n\ - -X ignored\n\ - -Z generate object file even after errors\n")); - - fprintf (stream, _("\ - --listing-lhs-width set the width in words of the output data column of\n\ - the listing\n\ - --listing-lhs-width2 set the width in words of the continuation lines\n\ - of the output data column; ignored if smaller than\n\ - the width of the first line\n\ - --listing-rhs-width set the max width in characters of the lines from\n\ - the source file\n\ - --listing-cont-lines set the maximum number of continuation lines used\n\ - for the output data column of the listing\n")); - - md_show_usage (stream); - - fprintf (stream, _("\nReport bugs to bug-gnu-utils@gnu.org\n")); -} - -#ifdef USE_EMULATIONS -#define EMULATION_ENVIRON "AS_EMULATION" - -extern struct emulation mipsbelf, mipslelf, mipself; -extern struct emulation mipsbecoff, mipslecoff, mipsecoff; -extern struct emulation i386coff, i386elf; - -static struct emulation *const emulations[] = { EMULATIONS }; -static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); - -static void select_emulation_mode PARAMS ((int, char **)); - -static void -select_emulation_mode (argc, argv) - int argc; - char **argv; -{ - int i; - char *p, *em = 0; - - for (i = 1; i < argc; i++) - if (!strncmp ("--em", argv[i], 4)) - break; - - if (i == argc) - goto do_default; - - p = strchr (argv[i], '='); - if (p) - p++; - else - p = argv[i+1]; - - if (!p || !*p) - as_fatal (_("missing emulation mode name")); - em = p; - - do_default: - if (em == 0) - em = getenv (EMULATION_ENVIRON); - if (em == 0) - em = DEFAULT_EMULATION; - - if (em) - { - for (i = 0; i < n_emulations; i++) - if (!strcmp (emulations[i]->name, em)) - break; - if (i == n_emulations) - as_fatal (_("unrecognized emulation name `%s'"), em); - this_emulation = emulations[i]; - } - else - this_emulation = emulations[0]; - - this_emulation->init (); -} - -const char * -default_emul_bfd_name () -{ - abort (); - return NULL; -} - -void -common_emul_init () -{ - this_format = this_emulation->format; - - if (this_emulation->leading_underscore == 2) - this_emulation->leading_underscore = this_format->dfl_leading_underscore; - - if (this_emulation->default_endian != 2) - target_big_endian = this_emulation->default_endian; - - if (this_emulation->fake_label_name == 0) - { - if (this_emulation->leading_underscore) - this_emulation->fake_label_name = "L0\001"; - else - /* What other parameters should we test? */ - this_emulation->fake_label_name = ".L0\001"; - } -} -#endif - -/* - * Since it is easy to do here we interpret the special arg "-" - * to mean "use stdin" and we set that argv[] pointing to "". - * After we have munged argv[], the only things left are source file - * name(s) and ""(s) denoting stdin. These file names are used - * (perhaps more than once) later. - * - * check for new machine-dep cmdline options in - * md_parse_option definitions in config/tc-*.c - */ - -static void -parse_args (pargc, pargv) - int *pargc; - char ***pargv; -{ - int old_argc, new_argc; - char **old_argv, **new_argv; - - /* Starting the short option string with '-' is for programs that - expect options and other ARGV-elements in any order and that care about - the ordering of the two. We describe each non-option ARGV-element - as if it were the argument of an option with character code 1. */ - - char *shortopts; - extern CONST char *md_shortopts; - static const char std_shortopts[] = - { - '-', 'J', -#ifndef WORKING_DOT_WORD - /* -K is not meaningful if .word is not being hacked. */ - 'K', -#endif - 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':', -#ifndef VMS - /* -v takes an argument on VMS, so we don't make it a generic - option. */ - 'v', -#endif - 'w', 'X', - /* New option for extending instruction set (see also --itbl below) */ - 't', ':', - '\0' - }; - struct option *longopts; - extern struct option md_longopts[]; - extern size_t md_longopts_size; - static const struct option std_longopts[] = { -#define OPTION_HELP (OPTION_STD_BASE) - {"help", no_argument, NULL, OPTION_HELP}, - {"keep-locals", no_argument, NULL, 'L'}, - {"mri", no_argument, NULL, 'M'}, -#define OPTION_NOCPP (OPTION_STD_BASE + 1) - {"nocpp", no_argument, NULL, OPTION_NOCPP}, -#define OPTION_STATISTICS (OPTION_STD_BASE + 2) - {"statistics", no_argument, NULL, OPTION_STATISTICS}, -#define OPTION_VERSION (OPTION_STD_BASE + 3) - {"version", no_argument, NULL, OPTION_VERSION}, -#define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4) - {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}, -#define OPTION_VERBOSE (OPTION_STD_BASE + 5) - {"verbose", no_argument, NULL, OPTION_VERBOSE}, -#define OPTION_EMULATION (OPTION_STD_BASE + 6) - {"emulation", required_argument, NULL, OPTION_EMULATION}, -#define OPTION_DEFSYM (OPTION_STD_BASE + 7) - {"defsym", required_argument, NULL, OPTION_DEFSYM}, -#define OPTION_INSTTBL (OPTION_STD_BASE + 8) - /* New option for extending instruction set (see also -t above). - The "-t file" or "--itbl file" option extends the basic set of - valid instructions by reading "file", a text file containing a - list of instruction formats. The additional opcodes and their - formats are added to the built-in set of instructions, and - mnemonics for new registers may also be defined. */ - {"itbl", required_argument, NULL, OPTION_INSTTBL}, -#define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9) - {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH}, -#define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10) - {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2}, -#define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11) - {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH}, -#define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12) - {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES}, -#define OPTION_DEPFILE (OPTION_STD_BASE + 13) - {"MD", required_argument, NULL, OPTION_DEPFILE}, -#define OPTION_GSTABS (OPTION_STD_BASE + 14) - {"gstabs", no_argument, NULL, OPTION_GSTABS}, -#define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15) - {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE}, -#define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16) - {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, -#define OPTION_GDWARF2 (OPTION_STD_BASE + 17) - {"gdwarf2", no_argument, NULL, OPTION_GDWARF2} - }; - - /* Construct the option lists from the standard list and the - target dependent list. */ - shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); - longopts = (struct option *) xmalloc (sizeof (std_longopts) + md_longopts_size); - memcpy (longopts, std_longopts, sizeof (std_longopts)); - memcpy ((char *) longopts + sizeof (std_longopts), - md_longopts, md_longopts_size); - - /* Make a local copy of the old argv. */ - old_argc = *pargc; - old_argv = *pargv; - - /* Initialize a new argv that contains no options. */ - new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); - new_argv[0] = old_argv[0]; - new_argc = 1; - new_argv[new_argc] = NULL; - - while (1) - { - /* getopt_long_only is like getopt_long, but '-' as well as '--' can - indicate a long option. */ - int longind; - int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, - &longind); - - if (optc == -1) - break; - - switch (optc) - { - default: - /* md_parse_option should return 1 if it recognizes optc, - 0 if not. */ - if (md_parse_option (optc, optarg) != 0) - break; - /* `-v' isn't included in the general short_opts list, so check for - it explicity here before deciding we've gotten a bad argument. */ - if (optc == 'v') - { -#ifdef VMS - /* Telling getopt to treat -v's value as optional can result - in it picking up a following filename argument here. The - VMS code in md_parse_option can return 0 in that case, - but it has no way of pushing the filename argument back. */ - if (optarg && *optarg) - new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; - else -#else - case 'v': -#endif - case OPTION_VERBOSE: - print_version_id (); - break; - } - /*FALLTHRU*/ - - case '?': - exit (EXIT_FAILURE); - - case 1: /* File name. */ - if (!strcmp (optarg, "-")) - optarg = ""; - new_argv[new_argc++] = optarg; - new_argv[new_argc] = NULL; - break; - - case OPTION_HELP: - show_usage (stdout); - exit (EXIT_SUCCESS); - - case OPTION_NOCPP: - break; - - case OPTION_STATISTICS: - flag_print_statistics = 1; - break; - - case OPTION_STRIP_LOCAL_ABSOLUTE: - flag_strip_local_absolute = 1; - break; - - case OPTION_TRADITIONAL_FORMAT: - flag_traditional_format = 1; - break; - - case OPTION_VERSION: - /* This output is intended to follow the GNU standards document. */ - printf (_("GNU assembler %s\n"), VERSION); - printf (_("Copyright 1997 Free Software Foundation, Inc.\n")); - printf (_("\ -This program is free software; you may redistribute it under the terms of\n\ -the GNU General Public License. This program has absolutely no warranty.\n")); - printf (_("This assembler was configured for a target of `%s'.\n"), - TARGET_ALIAS); - exit (EXIT_SUCCESS); - - case OPTION_EMULATION: -#ifdef USE_EMULATIONS - if (strcmp (optarg, this_emulation->name)) - as_fatal (_("multiple emulation names specified")); -#else - as_fatal (_("emulations not handled in this configuration")); -#endif - break; - - case OPTION_DUMPCONFIG: - fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS); - fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL); - fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU); -#ifdef TARGET_OBJ_FORMAT - fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT); -#endif -#ifdef TARGET_FORMAT - fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT); -#endif - exit (EXIT_SUCCESS); - - case OPTION_DEFSYM: - { - char *s; - long i; - struct defsym_list *n; - - for (s = optarg; *s != '\0' && *s != '='; s++) - ; - if (*s == '\0') - as_fatal (_("bad defsym; format is --defsym name=value")); - *s++ = '\0'; - i = strtol (s, (char **) NULL, 0); - n = (struct defsym_list *) xmalloc (sizeof *n); - n->next = defsyms; - n->name = optarg; - n->value = i; - defsyms = n; - } - break; - - case OPTION_INSTTBL: - case 't': - { - /* optarg is the name of the file containing the instruction - formats, opcodes, register names, etc. */ - struct itbl_file_list *n; - - if (optarg == NULL) - { - as_warn ( _("No file name following -t option\n") ); - break; - } - - n = (struct itbl_file_list *) xmalloc (sizeof *n); - n->next = itbl_files; - n->name = optarg; - itbl_files = n; - - /* Parse the file and add the new instructions to our internal - table. If multiple instruction tables are specified, the - information from this table gets appended onto the existing - internal table. */ - itbl_files->name = xstrdup (optarg); - if (itbl_parse (itbl_files->name) != 0) - { - fprintf (stderr, _("Failed to read instruction table %s\n"), - itbl_files->name); - exit (EXIT_SUCCESS); - } - } - break; - - case OPTION_DEPFILE: - start_dependencies (optarg); - break; - - case OPTION_GSTABS: - debug_type = DEBUG_STABS; - break; - - case OPTION_GDWARF2: - debug_type = DEBUG_DWARF2; - break; - - case 'J': - flag_signed_overflow_ok = 1; - break; - -#ifndef WORKING_DOT_WORD - case 'K': - flag_warn_displacement = 1; - break; -#endif - - case 'L': - flag_keep_locals = 1; - break; - - case OPTION_LISTING_LHS_WIDTH: - listing_lhs_width = atoi(optarg); - if (listing_lhs_width_second < listing_lhs_width) - listing_lhs_width_second = listing_lhs_width; - break; - case OPTION_LISTING_LHS_WIDTH2: - { - int tmp = atoi(optarg); - if (tmp > listing_lhs_width) - listing_lhs_width_second = tmp; - } - break; - case OPTION_LISTING_RHS_WIDTH: - listing_rhs_width = atoi(optarg); - break; - case OPTION_LISTING_CONT_LINES: - listing_lhs_cont_lines = atoi(optarg); - break; - - case 'M': - flag_mri = 1; -#ifdef TC_M68K - flag_m68k_mri = 1; -#endif - break; - - case 'R': - flag_readonly_data_in_text = 1; - break; - - case 'W': - flag_no_warnings = 1; - break; - - case 'Z': - flag_always_generate_output = 1; - break; - - case 'a': - if (optarg) - { - while (*optarg) - { - switch (*optarg) - { - case 'c': - listing |= LISTING_NOCOND; - break; - case 'd': - listing |= LISTING_NODEBUG; - break; - case 'h': - listing |= LISTING_HLL; - break; - case 'l': - listing |= LISTING_LISTING; - break; - case 'm': - listing |= LISTING_MACEXP; - break; - case 'n': - listing |= LISTING_NOFORM; - break; - case 's': - listing |= LISTING_SYMBOLS; - break; - case '=': - listing_filename = xstrdup (optarg + 1); - optarg += strlen (listing_filename); - break; - default: - as_fatal (_("invalid listing option `%c'"), *optarg); - break; - } - optarg++; - } - } - if (!listing) - listing = LISTING_DEFAULT; - break; - - case 'D': - /* DEBUG is implemented: it debugs different */ - /* things from other people's assemblers. */ - flag_debug = 1; - break; - - case 'f': - flag_no_comments = 1; - break; - - case 'I': - { /* Include file directory */ - char *temp = xstrdup (optarg); - add_include_dir (temp); - break; - } - - case 'o': - out_file_name = xstrdup (optarg); - break; - - case 'w': - break; - - case 'X': - /* -X means treat warnings as errors */ - break; - } - } - - free (shortopts); - free (longopts); - - *pargc = new_argc; - *pargv = new_argv; -} - -static long start_time; - -int -main (argc, argv) - int argc; - char **argv; -{ - int macro_alternate; - int macro_strip_at; - int keep_it; - - start_time = get_run_time (); - -#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) - setlocale (LC_MESSAGES, ""); -#endif - bindtextdomain (PACKAGE, LOCALEDIR); - textdomain (PACKAGE); - - if (debug_memory) - { -#ifdef BFD_ASSEMBLER - extern long _bfd_chunksize; - _bfd_chunksize = 64; -#endif - chunksize = 64; - } - -#ifdef HOST_SPECIAL_INIT - HOST_SPECIAL_INIT (argc, argv); -#endif - - myname = argv[0]; - xmalloc_set_program_name (myname); - - START_PROGRESS (myname, 0); - -#ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME -#define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" -#endif - - out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; - - hex_init (); -#ifdef BFD_ASSEMBLER - bfd_init (); - bfd_set_error_program_name (myname); -#endif - -#ifdef USE_EMULATIONS - select_emulation_mode (argc, argv); -#endif - - PROGRESS (1); - symbol_begin (); - frag_init (); - subsegs_begin (); - parse_args (&argc, &argv); - read_begin (); - input_scrub_begin (); - expr_begin (); - - if (flag_print_statistics) - xatexit (dump_statistics); - - macro_alternate = 0; - macro_strip_at = 0; -#ifdef TC_I960 - macro_strip_at = flag_mri; -#endif -#ifdef TC_A29K - /* For compatibility with the AMD 29K family macro assembler - specification. */ - macro_alternate = 1; - macro_strip_at = 1; -#endif - - macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr); - - PROGRESS (1); - -#ifdef BFD_ASSEMBLER - output_file_create (out_file_name); - assert (stdoutput != 0); -#endif - -#ifdef tc_init_after_args - tc_init_after_args (); -#endif - - itbl_init (); - - /* Now that we have fully initialized, and have created the output - file, define any symbols requested by --defsym command line - arguments. */ - while (defsyms != NULL) - { - symbolS *sym; - struct defsym_list *next; - - sym = symbol_new (defsyms->name, absolute_section, defsyms->value, - &zero_address_frag); - symbol_table_insert (sym); - next = defsyms->next; - free (defsyms); - defsyms = next; - } - - PROGRESS (1); - - perform_an_assembly_pass (argc, argv); /* Assemble it. */ - - cond_finish_check (-1); - -#ifdef md_end - md_end (); -#endif - - if (seen_at_least_1_file () - && (flag_always_generate_output || had_errors () == 0)) - keep_it = 1; - else - keep_it = 0; - -#if defined (BFD_ASSEMBLER) || !defined (BFD) - /* This used to be done at the start of write_object_file in - write.c, but that caused problems when doing listings when - keep_it was zero. This could probably be moved above md_end, but - I didn't want to risk the change. */ - subsegs_finish (); -#endif - - if (keep_it) - write_object_file (); - -#ifndef NO_LISTING - listing_print (listing_filename); -#endif - -#ifndef OBJ_VMS /* does its own file handling */ -#ifndef BFD_ASSEMBLER - if (keep_it) -#endif - output_file_close (out_file_name); -#endif - - if (had_errors () > 0 && ! flag_always_generate_output) - keep_it = 0; - - if (!keep_it) - unlink (out_file_name); - - input_scrub_end (); - - END_PROGRESS (myname); - - /* Use xexit instead of return, because under VMS environments they - may not place the same interpretation on the value given. */ - if (had_errors () > 0) - xexit (EXIT_FAILURE); - - /* Only generate dependency file if assembler was successful. */ - print_dependencies (); - - xexit (EXIT_SUCCESS); -} - -static void -dump_statistics () -{ -#ifdef HAVE_SBRK - char *lim = (char *) sbrk (0); -#endif - long run_time = get_run_time () - start_time; - - fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"), - myname, run_time / 1000000, run_time % 1000000); -#ifdef HAVE_SBRK - fprintf (stderr, _("%s: data size %ld\n"), - myname, (long) (lim - (char *) &environ)); -#endif - - subsegs_print_statistics (stderr); - write_print_statistics (stderr); - symbol_print_statistics (stderr); - read_print_statistics (stderr); - -#ifdef tc_print_statistics - tc_print_statistics (stderr); -#endif -#ifdef obj_print_statistics - obj_print_statistics (stderr); -#endif -} - - -/* perform_an_assembly_pass() - * - * Here to attempt 1 pass over each input file. - * We scan argv[*] looking for filenames or exactly "" which is - * shorthand for stdin. Any argv that is NULL is not a file-name. - * We set need_pass_2 TRUE if, after this, we still have unresolved - * expressions of the form (unknown value)+-(unknown value). - * - * Note the un*x semantics: there is only 1 logical input file, but it - * may be a catenation of many 'physical' input files. - */ -static void -perform_an_assembly_pass (argc, argv) - int argc; - char **argv; -{ - int saw_a_file = 0; -#ifdef BFD_ASSEMBLER - flagword applicable; -#endif - - need_pass_2 = 0; - -#ifndef BFD_ASSEMBLER -#ifdef MANY_SEGMENTS - { - unsigned int i; - for (i = SEG_E0; i < SEG_UNKNOWN; i++) - segment_info[i].fix_root = 0; - } - /* Create the three fixed ones */ - { - segT seg; - -#ifdef TE_APOLLO - seg = subseg_new (".wtext", 0); -#else - seg = subseg_new (".text", 0); -#endif - assert (seg == SEG_E0); - seg = subseg_new (".data", 0); - assert (seg == SEG_E1); - seg = subseg_new (".bss", 0); - assert (seg == SEG_E2); -#ifdef TE_APOLLO - create_target_segments (); -#endif - } - -#else /* not MANY_SEGMENTS */ - text_fix_root = NULL; - data_fix_root = NULL; - bss_fix_root = NULL; -#endif /* not MANY_SEGMENTS */ -#else /* BFD_ASSEMBLER */ - /* Create the standard sections, and those the assembler uses - internally. */ - text_section = subseg_new (TEXT_SECTION_NAME, 0); - data_section = subseg_new (DATA_SECTION_NAME, 0); - bss_section = subseg_new (BSS_SECTION_NAME, 0); - /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed - to have relocs, otherwise we don't find out in time. */ - applicable = bfd_applicable_section_flags (stdoutput); - bfd_set_section_flags (stdoutput, text_section, - applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC - | SEC_CODE | SEC_READONLY)); - /* @@ FIXME -- SEC_CODE seems to mean code only, rather than code possibly.*/ - bfd_set_section_flags (stdoutput, data_section, - applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)); - bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); - seg_info (bss_section)->bss = 1; - subseg_new (BFD_ABS_SECTION_NAME, 0); - subseg_new (BFD_UND_SECTION_NAME, 0); - reg_section = subseg_new ("*GAS `reg' section*", 0); - expr_section = subseg_new ("*GAS `expr' section*", 0); - -#endif /* BFD_ASSEMBLER */ - - subseg_set (text_section, 0); - - /* This may add symbol table entries, which requires having an open BFD, - and sections already created, in BFD_ASSEMBLER mode. */ - md_begin (); - -#ifdef obj_begin - obj_begin (); -#endif - - argv++; /* skip argv[0] */ - argc--; /* skip argv[0] */ - while (argc--) - { - if (*argv) - { /* Is it a file-name argument? */ - PROGRESS (1); - saw_a_file++; - /* argv->"" if stdin desired, else->filename */ - read_a_source_file (*argv); - } - argv++; /* completed that argv */ - } - if (!saw_a_file) - read_a_source_file (""); -} /* perform_an_assembly_pass() */ - -/* The interface between the macro code and gas expression handling. */ - -static int -macro_expr (emsg, idx, in, val) - const char *emsg; - int idx; - sb *in; - int *val; -{ - char *hold; - expressionS ex; - - sb_terminate (in); - - hold = input_line_pointer; - input_line_pointer = in->ptr + idx; - expression (&ex); - idx = input_line_pointer - in->ptr; - input_line_pointer = hold; - - if (ex.X_op != O_constant) - as_bad ("%s", emsg); - - *val = (int) ex.X_add_number; - - return idx; -} - -/* end of as.c */ |