Add support for PEF, Mach-O, xSYM

1 files changed, 490 insertions, 0 deletions

diff --git a/bfd/mach-o.h b/bfd/mach-o.h
new file mode 100644
index 00000000000..c368c1e521e
--- /dev/null
+++ b/bfd/mach-o.h
@@ -0,0 +1,490 @@
+/* Mach-O support for BFD.
+   Copyright 1999, 2000, 2001, 2002
+   Free Software Foundation, Inc.
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   This program 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 of the License, or
+   (at your option) any later version.
+
+   This program 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 this program; if not, write to the Free Software 
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _BFD_MACH_O_H_
+#define _BFD_MACH_O_H_
+
+#include "bfd.h"
+
+#define BFD_MACH_O_N_STAB  0xe0	/* If any of these bits set, a symbolic debugging entry.  */
+#define BFD_MACH_O_N_PEXT  0x10	/* Private external symbol bit.  */
+#define BFD_MACH_O_N_TYPE  0x0e	/* Mask for the type bits.  */
+#define BFD_MACH_O_N_EXT   0x01	/* External symbol bit, set for external symbols.  */
+#define BFD_MACH_O_N_UNDF  0x00	/* Undefined, n_sect == NO_SECT.  */
+#define BFD_MACH_O_N_ABS   0x02	/* Absolute, n_sect == NO_SECT.  */
+#define BFD_MACH_O_N_SECT  0x0e	/* Defined in section number n_sect.  */
+#define BFD_MACH_O_N_PBUD  0x0c /* Prebound undefined (defined in a dylib).  */
+#define BFD_MACH_O_N_INDR  0x0a	/* Indirect.  */
+
+typedef enum bfd_mach_o_ppc_thread_flavour
+  {
+    BFD_MACH_O_PPC_THREAD_STATE = 1,
+    BFD_MACH_O_PPC_FLOAT_STATE = 2,
+    BFD_MACH_O_PPC_EXCEPTION_STATE = 3,
+    BFD_MACH_O_PPC_VECTOR_STATE = 4
+  }
+bfd_mach_o_ppc_thread_flavour;
+
+typedef enum bfd_mach_o_i386_thread_flavour
+  {
+    BFD_MACH_O_i386_NEW_THREAD_STATE = 1,
+    BFD_MACH_O_i386_FLOAT_STATE = 2,
+    BFD_MACH_O_i386_ISA_PORT_MAP_STATE = 3,
+    BFD_MACH_O_i386_V86_ASSIST_STATE = 4,
+    BFD_MACH_O_i386_REGS_SEGS_STATE = 5,
+    BFD_MACH_O_i386_THREAD_SYSCALL_STATE = 6,
+    BFD_MACH_O_i386_THREAD_STATE_NONE = 7,
+    BFD_MACH_O_i386_SAVED_STATE = 8,
+    BFD_MACH_O_i386_THREAD_STATE = -1,
+    BFD_MACH_O_i386_THREAD_FPSTATE = -2,
+    BFD_MACH_O_i386_THREAD_EXCEPTSTATE = -3,
+    BFD_MACH_O_i386_THREAD_CTHREADSTATE = -4,
+  }
+bfd_mach_o_i386_thread_flavour;
+
+#define BFD_MACH_O_LC_REQ_DYLD 0x80000000
+
+typedef enum bfd_mach_o_load_command_type
+  {
+    BFD_MACH_O_LC_SEGMENT = 0x1,	/* File segment to be mapped.  */
+    BFD_MACH_O_LC_SYMTAB = 0x2,		/* Link-edit stab symbol table info (obsolete).  */
+    BFD_MACH_O_LC_SYMSEG = 0x3,		/* Link-edit gdb symbol table info.  */
+    BFD_MACH_O_LC_THREAD = 0x4,		/* Thread.  */
+    BFD_MACH_O_LC_UNIXTHREAD = 0x5,	/* UNIX thread (includes a stack).  */
+    BFD_MACH_O_LC_LOADFVMLIB = 0x6,	/* Load a fixed VM shared library.  */
+    BFD_MACH_O_LC_IDFVMLIB = 0x7,	/* Fixed VM shared library id.  */
+    BFD_MACH_O_LC_IDENT = 0x8,		/* Object identification information (obsolete).  */
+    BFD_MACH_O_LC_FVMFILE = 0x9,	/* Fixed VM file inclusion.  */
+    BFD_MACH_O_LC_PREPAGE = 0xa,	/* Prepage command (internal use).  */
+    BFD_MACH_O_LC_DYSYMTAB = 0xb,	/* Dynamic link-edit symbol table info.  */
+    BFD_MACH_O_LC_LOAD_DYLIB = 0xc,	/* Load a dynamicly linked shared library.  */
+    BFD_MACH_O_LC_ID_DYLIB = 0xd,	/* Dynamicly linked shared lib identification.  */
+    BFD_MACH_O_LC_LOAD_DYLINKER = 0xe,	/* Load a dynamic linker.  */
+    BFD_MACH_O_LC_ID_DYLINKER = 0xf,	/* Dynamic linker identification.  */
+    BFD_MACH_O_LC_PREBOUND_DYLIB = 0x10,/* Modules prebound for a dynamicly.  */
+    BFD_MACH_O_LC_ROUTINES = 0x11,	/* Image routines.  */
+    BFD_MACH_O_LC_SUB_FRAMEWORK = 0x12,	/* Sub framework.  */
+    BFD_MACH_O_LC_SUB_UMBRELLA = 0x13,	/* Sub umbrella.  */
+    BFD_MACH_O_LC_SUB_CLIENT = 0x14,	/* Sub client.  */
+    BFD_MACH_O_LC_SUB_LIBRARY = 0x15,   /* Sub library.  */
+    BFD_MACH_O_LC_TWOLEVEL_HINTS = 0x16,/* Two-level namespace lookup hints.  */
+    BFD_MACH_O_LC_PREBIND_CKSUM = 0x17, /* Prebind checksum.  */
+    /* Load a dynamicly linked shared library that is allowed to be
+       missing (weak).  */
+    BFD_MACH_O_LC_LOAD_WEAK_DYLIB = 0x18
+  }
+bfd_mach_o_load_command_type;
+
+typedef enum bfd_mach_o_cpu_type
+  {
+    BFD_MACH_O_CPU_TYPE_VAX = 1,
+    BFD_MACH_O_CPU_TYPE_MC680x0 = 6,
+    BFD_MACH_O_CPU_TYPE_I386 = 7,
+    BFD_MACH_O_CPU_TYPE_MIPS = 8,
+    BFD_MACH_O_CPU_TYPE_MC98000 = 10,
+    BFD_MACH_O_CPU_TYPE_HPPA = 11,
+    BFD_MACH_O_CPU_TYPE_ARM = 12,
+    BFD_MACH_O_CPU_TYPE_MC88000 = 13,
+    BFD_MACH_O_CPU_TYPE_SPARC = 14,
+    BFD_MACH_O_CPU_TYPE_I860 = 15,
+    BFD_MACH_O_CPU_TYPE_ALPHA = 16,
+    BFD_MACH_O_CPU_TYPE_POWERPC = 18
+  }
+bfd_mach_o_cpu_type;
+
+typedef enum bfd_mach_o_filetype
+  {
+    BFD_MACH_O_MH_OBJECT = 1,
+    BFD_MACH_O_MH_EXECUTE = 2,
+    BFD_MACH_O_MH_FVMLIB = 3,
+    BFD_MACH_O_MH_CORE = 4,
+    BFD_MACH_O_MH_PRELOAD = 5,
+    BFD_MACH_O_MH_DYLIB = 6,
+    BFD_MACH_O_MH_DYLINKER = 7,
+    BFD_MACH_O_MH_BUNDLE = 8
+  }
+bfd_mach_o_filetype;
+
+/* Constants for the type of a section.  */
+
+typedef enum bfd_mach_o_section_type
+  {
+    /* Regular section.  */
+    BFD_MACH_O_S_REGULAR = 0x0,	
+
+    /* Zero fill on demand section.  */
+    BFD_MACH_O_S_ZEROFILL = 0x1,
+
+    /* Section with only literal C strings.  */
+    BFD_MACH_O_S_CSTRING_LITERALS = 0x2, 
+
+    /* Section with only 4 byte literals.  */
+    BFD_MACH_O_S_4BYTE_LITERALS = 0x3,
+
+    /* Section with only 8 byte literals.  */
+    BFD_MACH_O_S_8BYTE_LITERALS = 0x4,
+
+    /* Section with only pointers to literals.  */
+    BFD_MACH_O_S_LITERAL_POINTERS = 0x5,
+
+    /* For the two types of symbol pointers sections and the symbol stubs
+       section they have indirect symbol table entries.  For each of the
+       entries in the section the indirect symbol table entries, in
+       corresponding order in the indirect symbol table, start at the index
+       stored in the reserved1 field of the section structure.  Since the
+       indirect symbol table entries correspond to the entries in the
+       section the number of indirect symbol table entries is inferred from
+       the size of the section divided by the size of the entries in the
+       section.  For symbol pointers sections the size of the entries in
+       the section is 4 bytes and for symbol stubs sections the byte size
+       of the stubs is stored in the reserved2 field of the section
+       structure.  */
+
+    /* Section with only non-lazy symbol pointers.  */
+    BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS = 0x6,
+  
+    /* Section with only lazy symbol pointers.  */
+    BFD_MACH_O_S_LAZY_SYMBOL_POINTERS = 0x7,
+  
+    /* Section with only symbol stubs, byte size of stub in the reserved2 field.  */
+    BFD_MACH_O_S_SYMBOL_STUBS = 0x8,
+  
+    /* Section with only function pointers for initialization.  */
+    BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS = 0x9
+  }
+bfd_mach_o_section_type;
+
+typedef unsigned long bfd_mach_o_cpu_subtype;
+
+typedef struct bfd_mach_o_header
+{
+  unsigned long magic;
+  unsigned long cputype;
+  unsigned long cpusubtype;
+  unsigned long filetype;
+  unsigned long ncmds;
+  unsigned long sizeofcmds;
+  unsigned long flags;
+  enum bfd_endian byteorder;
+}
+bfd_mach_o_header;
+
+typedef struct bfd_mach_o_section
+{
+  asection *bfdsection;
+  char sectname[16 + 1];
+  char segname[16 + 1];
+  bfd_vma addr;
+  bfd_vma size;
+  bfd_vma offset;
+  unsigned long align;
+  bfd_vma reloff;
+  unsigned long nreloc;
+  unsigned long flags;
+  unsigned long reserved1;
+  unsigned long reserved2;
+}
+bfd_mach_o_section;
+
+typedef struct bfd_mach_o_segment_command
+{
+  char segname[16];
+  bfd_vma vmaddr;
+  bfd_vma vmsize;
+  bfd_vma fileoff;
+  unsigned long filesize;
+  unsigned long nsects;
+  unsigned long flags;
+  bfd_mach_o_section *sections;
+  asection *segment;
+}
+bfd_mach_o_segment_command;
+
+typedef struct bfd_mach_o_symtab_command
+{
+  unsigned long symoff;
+  unsigned long nsyms;
+  unsigned long stroff;
+  unsigned long strsize;
+  asymbol *symbols;
+  char *strtab;
+  asection *stabs_segment;
+  asection *stabstr_segment;
+}
+bfd_mach_o_symtab_command;
+
+/* This is the second set of the symbolic information which is used to support
+   the data structures for the dynamicly link editor.
+ 
+   The original set of symbolic information in the symtab_command which contains
+   the symbol and string tables must also be present when this load command is
+   present.  When this load command is present the symbol table is organized
+   into three groups of symbols:
+       local symbols (static and debugging symbols) - grouped by module
+       defined external symbols - grouped by module (sorted by name if not lib)
+       undefined external symbols (sorted by name)
+   In this load command there are offsets and counts to each of the three groups
+   of symbols.
+ 
+   This load command contains a the offsets and sizes of the following new
+   symbolic information tables:
+       table of contents
+       module table
+       reference symbol table
+       indirect symbol table
+   The first three tables above (the table of contents, module table and
+   reference symbol table) are only present if the file is a dynamicly linked
+   shared library.  For executable and object modules, which are files
+   containing only one module, the information that would be in these three
+   tables is determined as follows:
+       table of contents - the defined external symbols are sorted by name
+       module table - the file contains only one module so everything in the
+                      file is part of the module.
+       reference symbol table - is the defined and undefined external symbols
+ 
+   For dynamicly linked shared library files this load command also contains
+   offsets and sizes to the pool of relocation entries for all sections
+   separated into two groups:
+       external relocation entries
+       local relocation entries
+   For executable and object modules the relocation entries continue to hang
+   off the section structures.  */
+
+typedef struct bfd_mach_o_dysymtab_command
+{
+  /* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command
+     are grouped into the following three groups:
+       local symbols (further grouped by the module they are from)
+       defined external symbols (further grouped by the module they are from)
+       undefined symbols
+   
+     The local symbols are used only for debugging.  The dynamic binding
+     process may have to use them to indicate to the debugger the local
+     symbols for a module that is being bound.
+   
+     The last two groups are used by the dynamic binding process to do the
+     binding (indirectly through the module table and the reference symbol
+     table when this is a dynamicly linked shared library file).  */
+
+  unsigned long ilocalsym;    /* Index to local symbols.  */
+  unsigned long nlocalsym;    /* Number of local symbols.  */
+  unsigned long iextdefsym;   /* Index to externally defined symbols.  */
+  unsigned long nextdefsym;   /* Number of externally defined symbols.  */
+  unsigned long iundefsym;    /* Index to undefined symbols.  */
+  unsigned long nundefsym;    /* Number of undefined symbols.  */
+
+  /* For the for the dynamic binding process to find which module a symbol
+     is defined in the table of contents is used (analogous to the ranlib
+     structure in an archive) which maps defined external symbols to modules
+     they are defined in.  This exists only in a dynamicly linked shared
+     library file.  For executable and object modules the defined external
+     symbols are sorted by name and is use as the table of contents.  */
+
+  unsigned long tocoff;       /* File offset to table of contents.  */
+  unsigned long ntoc;         /* Number of entries in table of contents.  */
+
+  /* To support dynamic binding of "modules" (whole object files) the symbol
+     table must reflect the modules that the file was created from.  This is
+     done by having a module table that has indexes and counts into the merged
+     tables for each module.  The module structure that these two entries
+     refer to is described below.  This exists only in a dynamicly linked
+     shared library file.  For executable and object modules the file only
+     contains one module so everything in the file belongs to the module.  */
+
+  unsigned long modtaboff;    /* File offset to module table.  */
+  unsigned long nmodtab;      /* Number of module table entries.  */
+
+  /* To support dynamic module binding the module structure for each module
+     indicates the external references (defined and undefined) each module
+     makes.  For each module there is an offset and a count into the
+     reference symbol table for the symbols that the module references.
+     This exists only in a dynamicly linked shared library file.  For
+     executable and object modules the defined external symbols and the
+     undefined external symbols indicates the external references.  */
+
+  unsigned long extrefsymoff;  /* Offset to referenced symbol table.  */
+  unsigned long nextrefsyms;   /* Number of referenced symbol table entries.  */
+
+  /* The sections that contain "symbol pointers" and "routine stubs" have
+     indexes and (implied counts based on the size of the section and fixed
+     size of the entry) into the "indirect symbol" table for each pointer
+     and stub.  For every section of these two types the index into the
+     indirect symbol table is stored in the section header in the field
+     reserved1.  An indirect symbol table entry is simply a 32bit index into
+     the symbol table to the symbol that the pointer or stub is referring to.
+     The indirect symbol table is ordered to match the entries in the section.  */
+
+  unsigned long indirectsymoff; /* File offset to the indirect symbol table.  */
+  unsigned long nindirectsyms;  /* Number of indirect symbol table entries.  */
+
+  /* To support relocating an individual module in a library file quickly the
+     external relocation entries for each module in the library need to be
+     accessed efficiently.  Since the relocation entries can't be accessed
+     through the section headers for a library file they are separated into
+     groups of local and external entries further grouped by module.  In this
+     case the presents of this load command who's extreloff, nextrel,
+     locreloff and nlocrel fields are non-zero indicates that the relocation
+     entries of non-merged sections are not referenced through the section
+     structures (and the reloff and nreloc fields in the section headers are
+     set to zero).
+
+     Since the relocation entries are not accessed through the section headers
+     this requires the r_address field to be something other than a section
+     offset to identify the item to be relocated.  In this case r_address is
+     set to the offset from the vmaddr of the first LC_SEGMENT command.
+
+     The relocation entries are grouped by module and the module table
+     entries have indexes and counts into them for the group of external
+     relocation entries for that the module.
+
+     For sections that are merged across modules there must not be any
+     remaining external relocation entries for them (for merged sections
+     remaining relocation entries must be local).  */
+
+  unsigned long extreloff;    /* Offset to external relocation entries.  */
+  unsigned long nextrel;      /* Number of external relocation entries.  */
+
+  /* All the local relocation entries are grouped together (they are not
+     grouped by their module since they are only used if the object is moved
+     from it staticly link edited address).  */
+
+  unsigned long locreloff;    /* Offset to local relocation entries.  */
+  unsigned long nlocrel;      /* Number of local relocation entries.  */
+}
+bfd_mach_o_dysymtab_command;      
+
+/* An indirect symbol table entry is simply a 32bit index into the symbol table 
+   to the symbol that the pointer or stub is refering to.  Unless it is for a
+   non-lazy symbol pointer section for a defined symbol which strip(1) as 
+   removed.  In which case it has the value INDIRECT_SYMBOL_LOCAL.  If the
+   symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that.  */
+
+#define INDIRECT_SYMBOL_LOCAL 0x80000000
+#define INDIRECT_SYMBOL_ABS   0x40000000
+
+typedef struct bfd_mach_o_thread_flavour
+{
+  unsigned long flavour;
+  bfd_vma offset;
+  unsigned long size;
+}
+bfd_mach_o_thread_flavour;
+
+typedef struct bfd_mach_o_thread_command
+{
+  unsigned long nflavours;
+  bfd_mach_o_thread_flavour *flavours; 
+  asection *section;
+}
+bfd_mach_o_thread_command;
+
+typedef struct bfd_mach_o_dylinker_command
+{
+  unsigned long cmd;                   /* LC_ID_DYLIB or LC_LOAD_DYLIB.  */
+  unsigned long cmdsize;               /* Includes pathname string.  */
+  unsigned long name_offset;           /* Offset to library's path name.  */
+  unsigned long name_len;              /* Offset to library's path name.  */
+  asection *section;
+}
+bfd_mach_o_dylinker_command;
+
+typedef struct bfd_mach_o_dylib_command
+{
+  unsigned long cmd;                   /* LC_ID_DYLIB or LC_LOAD_DYLIB.  */
+  unsigned long cmdsize;               /* Includes pathname string.  */
+  unsigned long name_offset;           /* Offset to library's path name.  */
+  unsigned long name_len;              /* Offset to library's path name.  */
+  unsigned long timestamp;	       /* Library's build time stamp.  */
+  unsigned long current_version;       /* Library's current version number.  */
+  unsigned long compatibility_version; /* Library's compatibility vers number.  */
+  asection *section;
+}
+bfd_mach_o_dylib_command;
+
+typedef struct bfd_mach_o_prebound_dylib_command
+{
+  unsigned long cmd;                 /* LC_PREBOUND_DYLIB.  */
+  unsigned long cmdsize;             /* Includes strings.  */
+  unsigned long name;                /* Library's path name.  */
+  unsigned long nmodules;            /* Number of modules in library.  */
+  unsigned long linked_modules;      /* Bit vector of linked modules.  */
+  asection *section;
+}
+bfd_mach_o_prebound_dylib_command;
+
+typedef struct bfd_mach_o_load_command
+{
+  bfd_mach_o_load_command_type type;
+  unsigned int type_required;
+  bfd_vma offset;
+  bfd_vma len;
+  union
+  {
+    bfd_mach_o_segment_command segment;
+    bfd_mach_o_symtab_command symtab;
+    bfd_mach_o_dysymtab_command dysymtab;
+    bfd_mach_o_thread_command thread;
+    bfd_mach_o_dylib_command dylib;
+    bfd_mach_o_dylinker_command dylinker;
+    bfd_mach_o_prebound_dylib_command prebound_dylib;
+  }
+  command;
+}
+bfd_mach_o_load_command;
+
+typedef struct mach_o_data_struct
+{
+  bfd_mach_o_header header;
+  bfd_mach_o_load_command *commands;
+  unsigned long nsymbols;
+  asymbol *symbols;
+  unsigned long nsects;
+  bfd_mach_o_section **sections;
+  bfd *ibfd;
+}
+mach_o_data_struct;
+
+typedef struct mach_o_data_struct bfd_mach_o_data_struct;
+
+boolean            bfd_mach_o_valid                     PARAMS ((bfd *));
+int                bfd_mach_o_scan_read_symtab_symbol   PARAMS ((bfd *, bfd_mach_o_symtab_command *, asymbol *, unsigned long));
+int                bfd_mach_o_scan_read_symtab_strtab   PARAMS ((bfd *, bfd_mach_o_symtab_command *));
+int                bfd_mach_o_scan_read_symtab_symbols  PARAMS ((bfd *, bfd_mach_o_symtab_command *));
+int                bfd_mach_o_scan_read_dysymtab_symbol PARAMS ((bfd *, bfd_mach_o_dysymtab_command *, bfd_mach_o_symtab_command *, asymbol *, unsigned long));
+int                bfd_mach_o_scan_start_address        PARAMS ((bfd *));
+int                bfd_mach_o_scan                      PARAMS ((bfd *, bfd_mach_o_header *));
+boolean            bfd_mach_o_mkobject                  PARAMS ((bfd *));
+const bfd_target * bfd_mach_o_object_p                  PARAMS ((bfd *));
+const bfd_target * bfd_mach_o_core_p                    PARAMS ((bfd *));
+const bfd_target * bfd_mach_o_archive_p                 PARAMS ((bfd *));
+bfd *              bfd_mach_o_openr_next_archived_file  PARAMS ((bfd *, bfd *));
+int                bfd_mach_o_lookup_section            PARAMS ((bfd *, asection *, bfd_mach_o_load_command **, bfd_mach_o_section **));
+int                bfd_mach_o_lookup_command            PARAMS ((bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **));
+unsigned long      bfd_mach_o_stack_addr                PARAMS ((enum bfd_mach_o_cpu_type));
+int                bfd_mach_o_core_fetch_environment    PARAMS ((bfd *, unsigned char **, unsigned int *));
+char *             bfd_mach_o_core_file_failing_command PARAMS ((bfd *));
+int                bfd_mach_o_core_file_failing_signal  PARAMS ((bfd *));
+boolean            bfd_mach_o_core_file_matches_executable_p PARAMS ((bfd *, bfd *));
+
+extern const bfd_target mach_o_be_vec;
+extern const bfd_target mach_o_le_vec;
+extern const bfd_target mach_o_fat_vec;
+
+#endif /* _BFD_MACH_O_H_ */