/* BFD back-end data structures for a.out (and similar) files.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002
+ 2000, 2001, 2002, 2003, 2004
Free Software Foundation, Inc.
Written by Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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.
+ 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. */
+ 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 LIBAOUT_H
#define LIBAOUT_H
#include "bfdlink.h"
-/* Macros for accessing components in an aout header. Saves cluttering
- the source with (bfd_vma) and (bfd_byte *) casts. */
-
-#define H_PUT_64(abfd, val, where) \
- bfd_h_put_64 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
-
-#define H_PUT_32(abfd, val, where) \
- bfd_h_put_32 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
-
-#define H_PUT_16(abfd, val, where) \
- bfd_h_put_16 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
+/* Macros for accessing components in an aout header. */
+#define H_PUT_64 bfd_h_put_64
+#define H_PUT_32 bfd_h_put_32
+#define H_PUT_16 bfd_h_put_16
#define H_PUT_8 bfd_h_put_8
-
-#define H_PUT_S64(abfd, val, where) \
- bfd_h_put_signed_64 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
-
-#define H_PUT_S32(abfd, val, where) \
- bfd_h_put_signed_32 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
-
-#define H_PUT_S16(abfd, val, where) \
- bfd_h_put_signed_16 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
-
+#define H_PUT_S64 bfd_h_put_signed_64
+#define H_PUT_S32 bfd_h_put_signed_32
+#define H_PUT_S16 bfd_h_put_signed_16
#define H_PUT_S8 bfd_h_put_signed_8
-
-#define H_GET_64(abfd, where) \
- bfd_h_get_64 ((abfd), (bfd_byte *) (where))
-
-#define H_GET_32(abfd, where) \
- bfd_h_get_32 ((abfd), (bfd_byte *) (where))
-
-#define H_GET_16(abfd, where) \
- bfd_h_get_16 ((abfd), (bfd_byte *) (where))
-
+#define H_GET_64 bfd_h_get_64
+#define H_GET_32 bfd_h_get_32
+#define H_GET_16 bfd_h_get_16
#define H_GET_8 bfd_h_get_8
-
-#define H_GET_S64(abfd, where) \
- bfd_h_get_signed_64 ((abfd), (bfd_byte *) (where))
-
-#define H_GET_S32(abfd, where) \
- bfd_h_get_signed_32 ((abfd), (bfd_byte *) (where))
-
-#define H_GET_S16(abfd, where) \
- bfd_h_get_signed_16 ((abfd), (bfd_byte *) (where))
-
+#define H_GET_S64 bfd_h_get_signed_64
+#define H_GET_S32 bfd_h_get_signed_32
+#define H_GET_S16 bfd_h_get_signed_16
#define H_GET_S8 bfd_h_get_signed_8
/* Parameterize the a.out code based on whether it is being built
struct internal_exec
{
- long a_info; /* Magic number and flags, packed */
- bfd_vma a_text; /* length of text, in bytes */
- bfd_vma a_data; /* length of data, in bytes */
- bfd_vma a_bss; /* length of uninitialized data area in mem */
- bfd_vma a_syms; /* length of symbol table data in file */
- bfd_vma a_entry; /* start address */
- bfd_vma a_trsize; /* length of text's relocation info, in bytes */
- bfd_vma a_drsize; /* length of data's relocation info, in bytes */
- /* Added for i960 */
- bfd_vma a_tload; /* Text runtime load address */
- bfd_vma a_dload; /* Data runtime load address */
- unsigned char a_talign; /* Alignment of text segment */
- unsigned char a_dalign; /* Alignment of data segment */
- unsigned char a_balign; /* Alignment of bss segment */
- char a_relaxable; /* Enough info for linker relax */
+ long a_info; /* Magic number and flags, packed. */
+ bfd_vma a_text; /* Length of text, in bytes. */
+ bfd_vma a_data; /* Length of data, in bytes. */
+ bfd_vma a_bss; /* Length of uninitialized data area in mem. */
+ bfd_vma a_syms; /* Length of symbol table data in file. */
+ bfd_vma a_entry; /* Start address. */
+ bfd_vma a_trsize; /* Length of text's relocation info, in bytes. */
+ bfd_vma a_drsize; /* Length of data's relocation info, in bytes. */
+ /* Added for i960 */
+ bfd_vma a_tload; /* Text runtime load address. */
+ bfd_vma a_dload; /* Data runtime load address. */
+ unsigned char a_talign; /* Alignment of text segment. */
+ unsigned char a_dalign; /* Alignment of data segment. */
+ unsigned char a_balign; /* Alignment of bss segment. */
+ char a_relaxable; /* Enough info for linker relax. */
};
/* Magic number is written
-< MSB >
-3130292827262524232221201918171615141312111009080706050403020100
-< FLAGS >< MACHINE TYPE >< MAGIC NUMBER >
-*/
+ < MSB >
+ 3130292827262524232221201918171615141312111009080706050403020100
+ < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
+
/* Magic number for NetBSD is
-<MSB >
-3130292827262524232221201918171615141312111009080706050403020100
-< FLAGS >< MACHINE TYPE >< MAGIC NUMBER >
-*/
+ <MSB >
+ 3130292827262524232221201918171615141312111009080706050403020100
+ < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
-enum machine_type {
+enum machine_type
+{
M_UNKNOWN = 0,
M_68010 = 1,
M_68020 = 2,
M_SPARC = 3,
- /* skip a bunch so we don't run into any of suns numbers */
- /* make these up for the ns32k*/
- M_NS32032 = (64), /* ns32032 running ? */
- M_NS32532 = (64 + 5), /* ns32532 running mach */
-
+ /* Skip a bunch so we don't run into any of SUN's numbers. */
+ /* Make these up for the ns32k. */
+ M_NS32032 = (64), /* NS32032 running ? */
+ M_NS32532 = (64 + 5), /* NS32532 running mach. */
M_386 = 100,
- M_29K = 101, /* AMD 29000 */
- M_386_DYNIX = 102, /* Sequent running dynix */
- M_ARM = 103, /* Advanced Risc Machines ARM */
- M_SPARCLET = 131, /* SPARClet = M_SPARC + 128 */
- M_386_NETBSD = 134, /* NetBSD/i386 binary */
- M_68K_NETBSD = 135, /* NetBSD/m68k binary */
- M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary */
- M_532_NETBSD = 137, /* NetBSD/ns32k binary */
- M_SPARC_NETBSD = 138, /* NetBSD/sparc binary */
- M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary */
- M_VAX_NETBSD = 140, /* NetBSD/vax binary */
- M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary */
- M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary */
- M_SPARCLET_1 = 147, /* 0x93, reserved */
- M_VAX4K_NETBSD = 150, /* NetBSD/vax 4K pages binary */
- M_MIPS1 = 151, /* MIPS R2000/R3000 binary */
- M_MIPS2 = 152, /* MIPS R4000/R6000 binary */
- M_SPARCLET_2 = 163, /* 0xa3, reserved */
- M_SPARCLET_3 = 179, /* 0xb3, reserved */
- M_SPARCLET_4 = 195, /* 0xc3, reserved */
- M_HP200 = 200, /* HP 200 (68010) BSD binary */
- M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary */
- M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary */
- M_SPARCLET_5 = 211, /* 0xd3, reserved */
- M_SPARCLET_6 = 227, /* 0xe3, reserved */
- /* M_SPARCLET_7 = 243 / * 0xf3, reserved */
+ M_29K = 101, /* AMD 29000. */
+ M_386_DYNIX = 102, /* Sequent running dynix. */
+ M_ARM = 103, /* Advanced Risc Machines ARM. */
+ M_SPARCLET = 131, /* SPARClet = M_SPARC + 128. */
+ M_386_NETBSD = 134, /* NetBSD/i386 binary. */
+ M_68K_NETBSD = 135, /* NetBSD/m68k binary. */
+ M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary. */
+ M_532_NETBSD = 137, /* NetBSD/ns32k binary. */
+ M_SPARC_NETBSD = 138, /* NetBSD/sparc binary. */
+ M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary. */
+ M_VAX_NETBSD = 140, /* NetBSD/vax binary. */
+ M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary. */
+ M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary. */
+ M_SPARCLET_1 = 147, /* 0x93, reserved. */
+ M_POWERPC_NETBSD = 149, /* NetBSD/powerpc (big-endian) binary. */
+ M_VAX4K_NETBSD = 150, /* NetBSD/vax 4K pages binary. */
+ M_MIPS1 = 151, /* MIPS R2000/R3000 binary. */
+ M_MIPS2 = 152, /* MIPS R4000/R6000 binary. */
+ M_88K_OPENBSD = 153, /* OpenBSD/m88k binary. */
+ M_HPPA_OPENBSD = 154, /* OpenBSD/hppa binary. */
+ M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary. */
+ M_X86_64_NETBSD = 157, /* NetBSD/amd64 binary. */
+ M_SPARCLET_2 = 163, /* 0xa3, reserved. */
+ M_SPARCLET_3 = 179, /* 0xb3, reserved. */
+ M_SPARCLET_4 = 195, /* 0xc3, reserved. */
+ M_HP200 = 200, /* HP 200 (68010) BSD binary. */
+ M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary. */
+ M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary. */
+ M_SPARCLET_5 = 211, /* 0xd3, reserved. */
+ M_SPARCLET_6 = 227, /* 0xe3, reserved. */
+/*M_SPARCLET_7 = 243 / * 0xf3, reserved. */
M_SPARCLITE_LE = 243,
- M_CRIS = 255 /* Axis CRIS binary. */
+ M_CRIS = 255 /* Axis CRIS binary. */
};
#define N_DYNAMIC(exec) ((exec).a_info & 0x80000000)
((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
#endif
-typedef struct aout_symbol {
+typedef struct aout_symbol
+{
asymbol symbol;
short desc;
char other;
Various things depend on this struct being around any time an a.out
file is being handled. An example is dbxread.c in GDB. */
-struct aoutdata {
- struct internal_exec *hdr; /* exec file header */
- aout_symbol_type *symbols; /* symtab for input bfd */
+struct aoutdata
+{
+ struct internal_exec *hdr; /* Exec file header. */
+ aout_symbol_type *symbols; /* Symtab for input bfd. */
- /* For ease, we do this */
+ /* For ease, we do this. */
asection *textsec;
asection *datasec;
asection *bsssec;
file_ptr sym_filepos;
file_ptr str_filepos;
- /* Size of a relocation entry in external form */
+ /* Size of a relocation entry in external form. */
unsigned reloc_entry_size;
- /* Size of a symbol table entry in external form */
+ /* Size of a symbol table entry in external form. */
unsigned symbol_entry_size;
- /* Page size - needed for alignment of demand paged files. */
+ /* Page size - needed for alignment of demand paged files. */
unsigned long page_size;
- /* Segment size - needed for alignment of demand paged files. */
+ /* Segment size - needed for alignment of demand paged files. */
unsigned long segment_size;
/* Zmagic disk block size - need to align the start of the text
unsigned exec_bytes_size;
unsigned vma_adjusted : 1;
- /* used when a bfd supports several highly similar formats */
+ /* Used when a bfd supports several highly similar formats. */
enum
{
default_format = 0,
bfd_vma *local_got_offsets;
};
-struct aout_data_struct {
- struct aoutdata a;
- struct internal_exec e;
+struct aout_data_struct
+{
+ struct aoutdata a;
+ struct internal_exec e;
};
-#define adata(bfd) ((bfd)->tdata.aout_data->a)
-#define exec_hdr(bfd) (adata(bfd).hdr)
-#define obj_aout_symbols(bfd) (adata(bfd).symbols)
-#define obj_textsec(bfd) (adata(bfd).textsec)
-#define obj_datasec(bfd) (adata(bfd).datasec)
-#define obj_bsssec(bfd) (adata(bfd).bsssec)
-#define obj_sym_filepos(bfd) (adata(bfd).sym_filepos)
-#define obj_str_filepos(bfd) (adata(bfd).str_filepos)
-#define obj_reloc_entry_size(bfd) (adata(bfd).reloc_entry_size)
-#define obj_symbol_entry_size(bfd) (adata(bfd).symbol_entry_size)
-#define obj_aout_subformat(bfd) (adata(bfd).subformat)
-#define obj_aout_external_syms(bfd) (adata(bfd).external_syms)
-#define obj_aout_external_sym_count(bfd) (adata(bfd).external_sym_count)
-#define obj_aout_sym_window(bfd) (adata(bfd).sym_window)
-#define obj_aout_external_strings(bfd) (adata(bfd).external_strings)
-#define obj_aout_external_string_size(bfd) (adata(bfd).external_string_size)
-#define obj_aout_string_window(bfd) (adata(bfd).string_window)
-#define obj_aout_sym_hashes(bfd) (adata(bfd).sym_hashes)
-#define obj_aout_dynamic_info(bfd) (adata(bfd).dynamic_info)
+#define adata(bfd) ((bfd)->tdata.aout_data->a)
+#define exec_hdr(bfd) (adata (bfd).hdr)
+#define obj_aout_symbols(bfd) (adata (bfd).symbols)
+#define obj_textsec(bfd) (adata (bfd).textsec)
+#define obj_datasec(bfd) (adata (bfd).datasec)
+#define obj_bsssec(bfd) (adata (bfd).bsssec)
+#define obj_sym_filepos(bfd) (adata (bfd).sym_filepos)
+#define obj_str_filepos(bfd) (adata (bfd).str_filepos)
+#define obj_reloc_entry_size(bfd) (adata (bfd).reloc_entry_size)
+#define obj_symbol_entry_size(bfd) (adata (bfd).symbol_entry_size)
+#define obj_aout_subformat(bfd) (adata (bfd).subformat)
+#define obj_aout_external_syms(bfd) (adata (bfd).external_syms)
+#define obj_aout_external_sym_count(bfd) (adata (bfd).external_sym_count)
+#define obj_aout_sym_window(bfd) (adata (bfd).sym_window)
+#define obj_aout_external_strings(bfd) (adata (bfd).external_strings)
+#define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size)
+#define obj_aout_string_window(bfd) (adata (bfd).string_window)
+#define obj_aout_sym_hashes(bfd) (adata (bfd).sym_hashes)
+#define obj_aout_dynamic_info(bfd) (adata (bfd).dynamic_info)
/* We take the address of the first element of an asymbol to ensure that the
- macro is only ever applied to an asymbol */
+ macro is only ever applied to an asymbol. */
#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
/* Information we keep for each a.out section. This is currently only
#define set_aout_section_data(s,v) \
((s)->used_by_bfd = (PTR)&(v)->relocs)
-/* Prototype declarations for functions defined in aoutx.h */
+/* Prototype declarations for functions defined in aoutx.h. */
extern bfd_boolean NAME(aout,squirt_out_relocs)
PARAMS ((bfd *, asection *));
PARAMS ((bfd *, asection *));
extern bfd_boolean NAME(aout,set_section_contents)
- PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type));
+ PARAMS ((bfd *, sec_ptr, const PTR, file_ptr, bfd_size_type));
extern asymbol * NAME(aout,make_empty_symbol)
PARAMS ((bfd *));
extern long NAME(aout,get_symtab_upper_bound)
PARAMS ((bfd *));
-extern long NAME(aout,get_symtab)
+extern long NAME(aout,canonicalize_symtab)
PARAMS ((bfd *, asymbol **));
extern void NAME(aout,swap_ext_reloc_in)
extern bfd_boolean NAME(aout,bfd_free_cached_info)
PARAMS ((bfd *));
-/* A.out uses the generic versions of these routines... */
+/* A.out uses the generic versions of these routines... */
#define aout_16_get_section_contents _bfd_generic_get_section_contents
#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
#endif
+#ifndef aout_32_bfd_is_target_special_symbol
+#define aout_32_bfd_is_target_special_symbol \
+ ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
+#endif
+
#ifndef WRITE_HEADERS
#define WRITE_HEADERS(abfd, execp) \
{ \
- bfd_size_type text_size; /* dummy vars */ \
+ bfd_size_type text_size; /* Dummy vars. */ \
file_ptr text_end; \
if (adata(abfd).magic == undecided_magic) \
NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \
NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \
\
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \
- || bfd_bwrite ((PTR) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
+ || bfd_bwrite ((PTR) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE,\
abfd) != EXEC_BYTES_SIZE) \
return FALSE; \
- /* Now write out reloc info, followed by syms and strings */ \
+ /* Now write out reloc info, followed by syms and strings. */ \
\
if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \
&& bfd_get_symcount (abfd) != 0) \
return FALSE; \
} \
\
- if (bfd_seek (abfd, (file_ptr) (N_TRELOFF(*execp)), SEEK_SET) != 0) \
+ if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0) \
return FALSE; \
if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) \
return FALSE; \
\
- if (bfd_seek (abfd, (file_ptr) (N_DRELOFF(*execp)), SEEK_SET) != 0) \
+ if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0) \
return FALSE; \
if (!NAME(aout,squirt_out_relocs) (abfd, obj_datasec (abfd))) \
return FALSE; \
}
#endif
+/* Test if a read-only section can be merged with .text. This is
+ possible if:
+
+ 1. Section has file contents and is read-only.
+ 2. The VMA of the section is after the end of .text and before
+ the start of .data.
+ 3. The image is demand-pageable (otherwise, a_text in the header
+ will not reflect the gap between .text and .data). */
+
+#define aout_section_merge_with_text_p(abfd, sec) \
+ (((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) == \
+ (SEC_HAS_CONTENTS | SEC_READONLY) \
+ && obj_textsec (abfd) != NULL \
+ && obj_datasec (abfd) != NULL \
+ && (sec)->vma >= (obj_textsec (abfd)->vma + \
+ obj_textsec (abfd)->size) \
+ && ((sec)->vma + (sec)->size) <= obj_datasec (abfd)->vma \
+ && ((abfd)->flags & D_PAGED) != 0)
+
#endif /* ! defined (LIBAOUT_H) */
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