/* BFD back-end data structures for a.out (and similar) files.
- Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1990-2020 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 3 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., 675 Mass Ave, Cambridge, MA 02139, 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., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#ifndef LIBAOUT_H
+#define LIBAOUT_H
/* We try to encapsulate the differences in the various a.out file
variants in a few routines, and otherwise share large masses of code.
This means we only have to fix bugs in one place, most of the time. */
+#include "bfdlink.h"
+
+/* 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 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 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 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
for a 32-bit architecture or a 64-bit architecture. */
+/* Do not "beautify" the CONCAT* macro args. Traditional C will not
+ remove whitespace added here, and thus will fail to concatenate
+ the tokens. */
#if ARCH_SIZE==64
-#define GET_WORD bfd_h_get_64
-#define GET_SWORD bfd_h_get_signed_64
-#define PUT_WORD bfd_h_put_64
+#define GET_WORD H_GET_64
+#define GET_SWORD H_GET_S64
+#define GET_MAGIC H_GET_32
+#define PUT_WORD H_PUT_64
+#define PUT_MAGIC H_PUT_32
#ifndef NAME
-#define NAME(x,y) CAT3(x,_64_,y)
+#define NAME(x,y) CONCAT3 (x,_64_,y)
#endif
-#define JNAME(x) CAT(x,_64)
+#define JNAME(x) CONCAT2 (x,_64)
#define BYTES_IN_WORD 8
+#else
+#if ARCH_SIZE==16
+#define GET_WORD H_GET_16
+#define GET_SWORD H_GET_S16
+#define GET_MAGIC H_GET_16
+#define PUT_WORD H_PUT_16
+#define PUT_MAGIC H_PUT_16
+#ifndef NAME
+#define NAME(x,y) CONCAT3 (x,_16_,y)
+#endif
+#define JNAME(x) CONCAT2 (x,_16)
+#define BYTES_IN_WORD 2
#else /* ARCH_SIZE == 32 */
-#define GET_WORD bfd_h_get_32
-#define GET_SWORD bfd_h_get_signed_32
-#define PUT_WORD bfd_h_put_32
+#define GET_WORD H_GET_32
+#define GET_SWORD H_GET_S32
+#define GET_MAGIC H_GET_32
+#define PUT_WORD H_PUT_32
+#define PUT_MAGIC H_PUT_32
#ifndef NAME
-#define NAME(x,y) CAT3(x,_32_,y)
+#define NAME(x,y) CONCAT3 (x,_32_,y)
#endif
-#define JNAME(x) CAT(x,_32)
+#define JNAME(x) CONCAT2 (x,_32)
#define BYTES_IN_WORD 4
#endif /* ARCH_SIZE==32 */
+#endif /* ARCH_SIZE==64 */
/* Declare at file level, since used in parameter lists, which have
weird scope. */
struct external_exec;
struct external_nlist;
+struct reloc_ext_external;
+struct reloc_std_external;
+\f
+/* a.out backend linker hash table entries. */
+
+struct aout_link_hash_entry
+{
+ struct bfd_link_hash_entry root;
+ /* Whether this symbol has been written out. */
+ bfd_boolean written;
+ /* Symbol index in output file. */
+ int indx;
+};
+
+/* a.out backend linker hash table. */
+
+struct aout_link_hash_table
+{
+ struct bfd_link_hash_table root;
+};
+
+/* Look up an entry in an a.out link hash table. */
+
+#define aout_link_hash_lookup(table, string, create, copy, follow) \
+ ((struct aout_link_hash_entry *) \
+ bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
+
+/* Traverse an a.out link hash table. */
+#define aout_link_hash_traverse(table, func, info) \
+ (bfd_link_hash_traverse \
+ (&(table)->root, \
+ (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
+ (info)))
+
+/* Get the a.out link hash table from the info structure. This is
+ just a cast. */
+
+#define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
+\f
/* Back-end information for various a.out targets. */
struct aout_backend_data
{
If not, the text section starts on the next page. */
unsigned char text_includes_header;
+ /* If this flag is set, then if the entry address is not in the
+ first SEGMENT_SIZE bytes of the text section, it is taken to be
+ the address of the start of the text section. This can be useful
+ for kernels. */
+ unsigned char entry_is_text_address;
+
+ /* The value to pass to N_SET_FLAGS. */
+ unsigned char exec_hdr_flags;
+
/* If the text section VMA isn't specified, and we need an absolute
address, use this as the default. If we're producing a relocatable
file, zero is always used. */
/* Callback for setting the page and segment sizes, if they can't be
trivially determined from the architecture. */
- boolean (*set_sizes) PARAMS ((bfd *));
+ bfd_boolean (*set_sizes) (bfd *);
/* zmagic files only. For go32, the length of the exec header contributes
to the size of the text section in the file for alignment purposes but
does *not* get counted in the length of the text section. */
unsigned char exec_header_not_counted;
- /* A callback function to read in the dynamic symbols of an object
- which is dynamically linked. This returns the number of symbols
- read (or -1 on error) and sets *SYMS to a buffer holding an array
- of external_nlist structures and *STRS and *STRSIZE to the
- associated string table. (This interface works for SunOS, but
- can be changed if some other interface is better for some other
- shared library implementation). */
- bfd_size_type (*read_dynamic_symbols) PARAMS ((bfd *,
- struct external_nlist **syms,
- char **strs,
- bfd_size_type *strsize));
-
- /* A callback function to read in the dynamic relocs of an object
- which is dynamically linked. This returns the number of relocs
- read (or -1 on error) and sets *RELOCS to a buffer holding an
- array of external reloc structures (the type depends upon the
- type of object file). */
- bfd_size_type (*read_dynamic_relocs) PARAMS ((bfd *, PTR *relocs));
+ /* Callback from the add symbols phase of the linker code to handle
+ a dynamic object. */
+ bfd_boolean (*add_dynamic_symbols)
+ (bfd *, struct bfd_link_info *, struct external_nlist **,
+ bfd_size_type *, char **);
+
+ /* Callback from the add symbols phase of the linker code to handle
+ adding a single symbol to the global linker hash table. */
+ bfd_boolean (*add_one_symbol)
+ (struct bfd_link_info *, bfd *, const char *, flagword,
+ asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
+ struct bfd_link_hash_entry **);
+
+ /* Called to handle linking a dynamic object. */
+ bfd_boolean (*link_dynamic_object)
+ (struct bfd_link_info *, bfd *);
+
+ /* Called for each global symbol being written out by the linker.
+ This should write out the dynamic symbol information. */
+ bfd_boolean (*write_dynamic_symbol)
+ (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
+
+ /* If this callback is not NULL, the linker calls it for each reloc.
+ RELOC is a pointer to the unswapped reloc. If *SKIP is set to
+ TRUE, the reloc will be skipped. *RELOCATION may be changed to
+ change the effects of the relocation. */
+ bfd_boolean (*check_dynamic_reloc)
+ (struct bfd_link_info *info, bfd *input_bfd,
+ asection *input_section, struct aout_link_hash_entry *h,
+ void * reloc, bfd_byte *contents, bfd_boolean *skip,
+ bfd_vma *relocation);
+
+ /* Called at the end of a link to finish up any dynamic linking
+ information. */
+ bfd_boolean (*finish_dynamic_link) (bfd *, struct bfd_link_info *);
};
#define aout_backend_info(abfd) \
- ((CONST struct aout_backend_data *)((abfd)->xvec->backend_data))
+ ((const struct aout_backend_data *)((abfd)->xvec->backend_data))
/* This is the layout in memory of a "struct exec" while we process it.
All 'lengths' are given as a number of bytes.
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 >
-*/
+/* Magic number is written
+ < MSB >
+ 3130292827262524232221201918171615141312111009080706050403020100
+ < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
+
/* Magic number for NetBSD is
-<MSB >
-3130292827262524232221201918171615141312111009080706050403020100
-< FLAGS >< >< 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 */
+ /* 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_386_NETBSD = 134, /* NetBSD/386 binary */
- M_MIPS1 = 151, /* MIPS R2000/R3000 binary */
- M_MIPS2 = 152, /* MIPS R4000/R6000 binary */
- 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_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. */
};
-#define N_DYNAMIC(exec) ((exec).a_info & 0x80000000)
+#define N_DYNAMIC(execp) ((execp)->a_info & 0x80000000)
#ifndef N_MAGIC
-# define N_MAGIC(exec) ((exec).a_info & 0xffff)
+# define N_MAGIC(execp) ((execp)->a_info & 0xffff)
#endif
#ifndef N_MACHTYPE
-# define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
+# define N_MACHTYPE(execp) ((enum machine_type)(((execp)->a_info >> 16) & 0xff))
#endif
#ifndef N_FLAGS
-# define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
+# define N_FLAGS(execp) (((execp)->a_info >> 24) & 0xff)
#endif
#ifndef N_SET_INFO
-# define N_SET_INFO(exec, magic, type, flags) \
-((exec).a_info = ((magic) & 0xffff) \
+# define N_SET_INFO(execp, magic, type, flags) \
+((execp)->a_info = ((magic) & 0xffff) \
| (((int)(type) & 0xff) << 16) \
- | (((flags) & 0xff) << 24))
+ | (((flags) & 0xffu) << 24))
#endif
#ifndef N_SET_DYNAMIC
-# define N_SET_DYNAMIC(exec, dynamic) \
-((exec).a_info = (dynamic) ? ((exec).a_info | 0x80000000) : \
-((exec).a_info & 0x7fffffff))
+# define N_SET_DYNAMIC(execp, dynamic) \
+((execp)->a_info = (dynamic) ? (long) ((execp)->a_info | 0x80000000) : \
+((execp)->a_info & 0x7fffffff))
#endif
#ifndef N_SET_MAGIC
-# define N_SET_MAGIC(exec, magic) \
-((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
+# define N_SET_MAGIC(execp, magic) \
+((execp)->a_info = (((execp)->a_info & 0xffff0000) | ((magic) & 0xffff)))
#endif
#ifndef N_SET_MACHTYPE
-# define N_SET_MACHTYPE(exec, machtype) \
-((exec).a_info = \
- ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
+# define N_SET_MACHTYPE(execp, machtype) \
+((execp)->a_info = \
+ ((execp)->a_info & 0xff00ffff) | ((((int) (machtype)) &0xff) << 16))
#endif
#ifndef N_SET_FLAGS
-# define N_SET_FLAGS(exec, flags) \
-((exec).a_info = \
- ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
+# define N_SET_FLAGS(execp, flags) \
+((execp)->a_info = \
+ ((execp)->a_info & 0x00ffffff) | (((flags) & 0xffu) << 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 */
-
- /* For ease, we do this */
+enum aout_subformat {
+ default_format = 0,
+ /* Used on HP 9000/300 running HP/UX. */
+ gnu_encap_format,
+ /* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */
+ q_magic_format
+};
+
+enum aout_magic {
+ undecided_magic = 0,
+ z_magic,
+ o_magic,
+ n_magic,
+ i_magic
+};
+
+struct aoutdata
+{
+ struct internal_exec *hdr; /* Exec file header. */
+ aout_symbol_type *symbols; /* Symtab for input bfd. */
+
+ /* 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
+ section in ZMAGIC binaries. Normally the same as page_size. */
+ unsigned long zmagic_disk_block_size;
+
unsigned exec_bytes_size;
unsigned vma_adjusted : 1;
- /* used when a bfd supports several highly similar formats */
- enum {
- default_format = 0,
- gnu_encap_format } subformat;
+ /* Used when a bfd supports several highly similar formats. */
+ enum aout_subformat subformat;
- enum {
- undecided_magic = 0,
- z_magic,
- o_magic,
- n_magic } magic;
+ enum aout_magic magic;
+
+ /* A buffer for find_nearest_line. */
+ char *line_buf;
/* The external symbol information. */
struct external_nlist *external_syms;
bfd_size_type external_sym_count;
+ bfd_window sym_window;
char *external_strings;
bfd_size_type external_string_size;
+ bfd_window string_window;
struct aout_link_hash_entry **sym_hashes;
/* A pointer for shared library information. */
- PTR dynamic_info;
+ void * dynamic_info;
+
+ /* A mapping from local symbols to offsets into the global offset
+ table, used when linking on SunOS. This is indexed by the symbol
+ index. */
+ 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_external_strings(bfd) (adata(bfd).external_strings)
-#define obj_aout_external_string_size(bfd) (adata(bfd).external_string_size)
-#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))
-/* Prototype declarations for functions defined in aoutx.h */
+/* Information we keep for each a.out section. This is currently only
+ used by the a.out backend linker. */
+
+struct aout_section_data_struct
+{
+ /* The unswapped relocation entries for this section. */
+ void * relocs;
+};
+
+#define aout_section_data(s) \
+ ((struct aout_section_data_struct *) (s)->used_by_bfd)
-boolean
-NAME(aout,squirt_out_relocs) PARAMS ((bfd *abfd, asection *section));
+#define set_aout_section_data(s,v) \
+ ((s)->used_by_bfd = (void *)&(v)->relocs)
-bfd_target *
-NAME(aout,some_aout_object_p) PARAMS ((bfd *abfd,
- struct internal_exec *execp,
- bfd_target * (*callback)(bfd *)));
+/* Prototype declarations for functions defined in aoutx.h. */
-boolean
-NAME(aout,mkobject) PARAMS ((bfd *abfd));
+extern bfd_boolean NAME (aout, squirt_out_relocs)
+ (bfd *, asection *);
-enum machine_type
-NAME(aout,machine_type) PARAMS ((enum bfd_architecture arch,
- unsigned long machine));
+extern bfd_boolean NAME (aout, make_sections)
+ (bfd *);
-boolean
-NAME(aout,set_arch_mach) PARAMS ((bfd *abfd, enum bfd_architecture arch,
- unsigned long machine));
+extern bfd_cleanup NAME (aout, some_aout_object_p)
+ (bfd *, struct internal_exec *, bfd_cleanup (*) (bfd *));
-boolean
-NAME(aout,new_section_hook) PARAMS ((bfd *abfd, asection *newsect));
+extern bfd_boolean NAME (aout, mkobject)
+ (bfd *);
-boolean
-NAME(aout,set_section_contents) PARAMS ((bfd *abfd, sec_ptr section,
- PTR location, file_ptr offset, bfd_size_type count));
+extern enum machine_type NAME (aout, machine_type)
+ (enum bfd_architecture, unsigned long, bfd_boolean *);
-asymbol *
-NAME(aout,make_empty_symbol) PARAMS ((bfd *abfd));
+extern bfd_boolean NAME (aout, set_arch_mach)
+ (bfd *, enum bfd_architecture, unsigned long);
-boolean
-NAME(aout,slurp_symbol_table) PARAMS ((bfd *abfd));
+extern bfd_boolean NAME (aout, new_section_hook)
+ (bfd *, asection *);
-boolean
-NAME(aout,write_syms) PARAMS ((bfd *abfd));
+extern bfd_boolean NAME (aout, set_section_contents)
+ (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
-void
-NAME(aout,reclaim_symbol_table) PARAMS ((bfd *abfd));
+extern asymbol * NAME (aout, make_empty_symbol)
+ (bfd *);
-long
-NAME(aout,get_symtab_upper_bound) PARAMS ((bfd *abfd));
+extern bfd_boolean NAME (aout, translate_symbol_table)
+ (bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
+ char *, bfd_size_type, bfd_boolean);
-long
-NAME(aout,get_symtab) PARAMS ((bfd *abfd, asymbol **location));
+extern bfd_boolean NAME (aout, slurp_symbol_table)
+ (bfd *);
-boolean
-NAME(aout,slurp_reloc_table) PARAMS ((bfd *abfd, sec_ptr asect,
- asymbol **symbols));
+extern bfd_boolean NAME (aout, write_syms)
+ (bfd *);
-long
-NAME(aout,canonicalize_reloc) PARAMS ((bfd *abfd, sec_ptr section,
- arelent **relptr, asymbol **symbols));
+extern void NAME (aout, reclaim_symbol_table)
+ (bfd *);
-long
-NAME(aout,get_reloc_upper_bound) PARAMS ((bfd *abfd, sec_ptr asect));
+extern long NAME (aout, get_symtab_upper_bound)
+ (bfd *);
-void
-NAME(aout,reclaim_reloc) PARAMS ((bfd *ignore_abfd, sec_ptr ignore));
+extern long NAME (aout, canonicalize_symtab)
+ (bfd *, asymbol **);
-alent *
-NAME(aout,get_lineno) PARAMS ((bfd *ignore_abfd, asymbol *ignore_symbol));
+extern void NAME (aout, swap_ext_reloc_in)
+ (bfd *, struct reloc_ext_external *, arelent *, asymbol **,
+ bfd_size_type);
-void
-NAME(aout,print_symbol) PARAMS ((bfd *ignore_abfd, PTR file,
- asymbol *symbol, bfd_print_symbol_type how));
+extern void NAME (aout, swap_std_reloc_in)
+ (bfd *, struct reloc_std_external *, arelent *, asymbol **,
+ bfd_size_type);
-void
-NAME(aout,get_symbol_info) PARAMS ((bfd *ignore_abfd,
- asymbol *symbol, symbol_info *ret));
+extern reloc_howto_type * NAME (aout, reloc_type_lookup)
+ (bfd *, bfd_reloc_code_real_type);
-boolean
-NAME(aout,find_nearest_line) PARAMS ((bfd *abfd, asection *section,
- asymbol **symbols, bfd_vma offset, CONST char **filename_ptr,
- CONST char **functionname_ptr, unsigned int *line_ptr));
+extern reloc_howto_type * NAME (aout, reloc_name_lookup)
+ (bfd *, const char *);
-int
-NAME(aout,sizeof_headers) PARAMS ((bfd *abfd, boolean exec));
+extern bfd_boolean NAME (aout, slurp_reloc_table)
+ (bfd *, sec_ptr, asymbol **);
-boolean
-NAME(aout,adjust_sizes_and_vmas) PARAMS ((bfd *abfd,
- bfd_size_type *text_size, file_ptr *text_end));
+extern long NAME (aout, canonicalize_reloc)
+ (bfd *, sec_ptr, arelent **, asymbol **);
-void
-NAME(aout,swap_exec_header_in) PARAMS ((bfd *abfd,
- struct external_exec *raw_bytes, struct internal_exec *execp));
+extern long NAME (aout, get_reloc_upper_bound)
+ (bfd *, sec_ptr);
-void
-NAME(aout,swap_exec_header_out) PARAMS ((bfd *abfd,
- struct internal_exec *execp, struct external_exec *raw_bytes));
+extern void NAME (aout, reclaim_reloc)
+ (bfd *, sec_ptr);
-struct bfd_link_hash_table *
-NAME(aout,link_hash_table_create) PARAMS ((bfd *));
+extern alent * NAME (aout, get_lineno)
+ (bfd *, asymbol *);
-boolean
-NAME(aout,link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *));
+extern void NAME (aout, print_symbol)
+ (bfd *, void *, asymbol *, bfd_print_symbol_type);
-boolean
-NAME(aout,final_link) PARAMS ((bfd *, struct bfd_link_info *,
- void (*) (bfd *, file_ptr *, file_ptr *,
- file_ptr *)));
+extern void NAME (aout, get_symbol_info)
+ (bfd *, asymbol *, symbol_info *);
-boolean
-NAME(aout,bfd_free_cached_info) PARAMS ((bfd *));
+extern bfd_boolean NAME (aout, find_nearest_line)
+ (bfd *, asymbol **, asection *, bfd_vma,
+ const char **, const char **, unsigned int *, unsigned int *);
-/* Prototypes for functions in stab-syms.c. */
+extern long NAME (aout, read_minisymbols)
+ (bfd *, bfd_boolean, void * *, unsigned int *);
-CONST char *
-aout_stab_name PARAMS ((int code));
+extern asymbol * NAME (aout, minisymbol_to_symbol)
+ (bfd *, bfd_boolean, const void *, asymbol *);
-/* A.out uses the generic versions of these routines... */
+extern int NAME (aout, sizeof_headers)
+ (bfd *, struct bfd_link_info *);
-#define aout_32_get_section_contents bfd_generic_get_section_contents
+extern bfd_boolean NAME (aout, adjust_sizes_and_vmas)
+ (bfd *);
-#define aout_64_get_section_contents bfd_generic_get_section_contents
-#ifndef NO_WRITE_HEADER_KLUDGE
-#define NO_WRITE_HEADER_KLUDGE 0
-#endif
+extern void NAME (aout, swap_exec_header_in)
+ (bfd *, struct external_exec *, struct internal_exec *);
+
+extern void NAME (aout, swap_exec_header_out)
+ (bfd *, struct internal_exec *, struct external_exec *);
+
+extern struct bfd_hash_entry * NAME (aout, link_hash_newfunc)
+ (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
+
+extern bfd_boolean NAME (aout, link_hash_table_init)
+ (struct aout_link_hash_table *, bfd *,
+ struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *),
+ unsigned int);
-#ifndef aout_32_bfd_copy_private_section_data
-#define aout_32_bfd_copy_private_section_data \
- ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
+extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create)
+ (bfd *);
+
+extern bfd_boolean NAME (aout, link_add_symbols)
+ (bfd *, struct bfd_link_info *);
+
+extern bfd_boolean NAME (aout, final_link)
+ (bfd *, struct bfd_link_info *,
+ void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *));
+
+extern bfd_boolean NAME (aout, bfd_free_cached_info)
+ (bfd *);
+
+#define aout_32_find_inliner_info _bfd_nosymbols_find_inliner_info
+#if 0 /* Are these needed? */
+#define aout_16_find_inliner_info _bfd_nosymbols_find_inliner_info
+#define aout_64_find_inliner_info _bfd_nosymbols_find_inliner_info
#endif
-#ifndef aout_32_bfd_copy_private_bfd_data
-#define aout_32_bfd_copy_private_bfd_data \
- ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
+
+/* A.out uses the generic versions of these routines... */
+
+#define aout_16_get_section_contents _bfd_generic_get_section_contents
+
+#define aout_32_get_section_contents _bfd_generic_get_section_contents
+
+#define aout_64_get_section_contents _bfd_generic_get_section_contents
+
+#ifndef aout_32_bfd_is_local_label_name
+#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
#endif
-#ifndef aout_32_bfd_is_local_label
-#define aout_32_bfd_is_local_label bfd_generic_is_local_label
+
+#ifndef aout_32_bfd_is_target_special_symbol
+#define aout_32_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
#endif
#ifndef WRITE_HEADERS
#define WRITE_HEADERS(abfd, execp) \
{ \
- 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, adjust_sizes_and_vmas) (abfd); \
+ \
execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
execp->a_entry = bfd_get_start_address (abfd); \
- \
+ \
execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
obj_reloc_entry_size (abfd)); \
execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
obj_reloc_entry_size (abfd)); \
- NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \
+ NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \
\
- bfd_seek (abfd, (file_ptr) 0, SEEK_SET); \
- bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); \
- /* Now write out reloc info, followed by syms and strings */ \
- \
- if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \
- && bfd_get_symcount (abfd) != 0) \
- { \
- bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET); \
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \
+ || bfd_bwrite (& exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
+ abfd) != EXEC_BYTES_SIZE) \
+ return FALSE; \
+ /* Now write out reloc info, followed by syms and strings. */ \
\
- if (! NAME(aout,write_syms)(abfd)) return false; \
+ if (bfd_get_outsymbols (abfd) != NULL \
+ && bfd_get_symcount (abfd) != 0) \
+ { \
+ if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (execp)), SEEK_SET) != 0)\
+ return FALSE; \
\
- bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET); \
+ if (! NAME (aout, write_syms) (abfd)) \
+ return FALSE; \
+ } \
\
- if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \
- bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET); \
+ 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 (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) return false; \
- } \
- }
+ 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) */
projects / deliverable / binutils-gdb.git / blobdiff