| /* BFD back-end data structures for a.out (and similar) files. |
| Copyright (C) 1990-2024 Free Software Foundation, Inc. |
| Written by Cygnus Support. |
| |
| 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 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. |
| |
| 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 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) CONCAT3 (x,_64_,y) |
| #endif |
| #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 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) CONCAT3 (x,_32_,y) |
| #endif |
| #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; |
| |
| /* 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. */ |
| bool 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, \ |
| (bool (*) (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)) |
| |
| /* Back-end information for various a.out targets. */ |
| struct aout_backend_data |
| { |
| /* Are ZMAGIC files mapped contiguously? If so, the text section may |
| need more padding, if the segment size (granularity for memory access |
| control) is larger than the page size. */ |
| unsigned char zmagic_mapped_contiguous; |
| /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the |
| text section, which starts immediately after the file header. |
| 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. */ |
| /* ?? Perhaps a callback would be a better choice? Will this do anything |
| reasonable for a format that handles multiple CPUs with different |
| load addresses for each? */ |
| bfd_vma default_text_vma; |
| |
| /* Callback for setting the page and segment sizes, if they can't be |
| trivially determined from the architecture. */ |
| bool (*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; |
| |
| /* Callback from the add symbols phase of the linker code to handle |
| a dynamic object. */ |
| bool (*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. */ |
| bool (*add_one_symbol) |
| (struct bfd_link_info *, bfd *, const char *, flagword, |
| asection *, bfd_vma, const char *, bool, bool, |
| struct bfd_link_hash_entry **); |
| |
| /* Called to handle linking a dynamic object. */ |
| bool (*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. */ |
| bool (*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. */ |
| bool (*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, bool *skip, |
| bfd_vma *relocation); |
| |
| /* Called at the end of a link to finish up any dynamic linking |
| information. */ |
| bool (*finish_dynamic_link) (bfd *, struct bfd_link_info *); |
| }; |
| #define aout_backend_info(abfd) \ |
| ((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. |
| All 'alignments' are for relinkable files only; an alignment of |
| 'n' indicates the corresponding segment must begin at an |
| address that is a multiple of (2**n). */ |
| |
| 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. */ |
| }; |
| |
| /* Magic number is written |
| < MSB > |
| 3130292827262524232221201918171615141312111009080706050403020100 |
| < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */ |
| |
| /* Magic number for NetBSD is |
| <MSB > |
| 3130292827262524232221201918171615141312111009080706050403020100 |
| < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */ |
| |
| 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 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_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(execp) ((execp)->a_info & 0x80000000) |
| |
| #ifndef N_MAGIC |
| # define N_MAGIC(execp) ((execp)->a_info & 0xffff) |
| #endif |
| |
| #ifndef N_MACHTYPE |
| # define N_MACHTYPE(execp) ((enum machine_type)(((execp)->a_info >> 16) & 0xff)) |
| #endif |
| |
| #ifndef N_FLAGS |
| # define N_FLAGS(execp) (((execp)->a_info >> 24) & 0xff) |
| #endif |
| |
| #ifndef N_SET_INFO |
| # define N_SET_INFO(execp, magic, type, flags) \ |
| ((execp)->a_info = ((magic) & 0xffff) \ |
| | (((int)(type) & 0xff) << 16) \ |
| | (((flags) & 0xffu) << 24)) |
| #endif |
| |
| #ifndef N_SET_DYNAMIC |
| # 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(execp, magic) \ |
| ((execp)->a_info = (((execp)->a_info & 0xffff0000) | ((magic) & 0xffff))) |
| #endif |
| |
| #ifndef N_SET_MACHTYPE |
| # 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(execp, flags) \ |
| ((execp)->a_info = \ |
| ((execp)->a_info & 0x00ffffff) | (((flags) & 0xffu) << 24)) |
| #endif |
| |
| typedef struct aout_symbol |
| { |
| asymbol symbol; |
| short desc; |
| char other; |
| unsigned char type; |
| } aout_symbol_type; |
| |
| /* The `tdata' struct for all a.out-like object file formats. |
| Various things depend on this struct being around any time an a.out |
| file is being handled. An example is dbxread.c in GDB. */ |
| |
| 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; |
| |
| /* We remember these offsets so that after check_file_format, we have |
| no dependencies on the particular format of the exec_hdr. */ |
| file_ptr sym_filepos; |
| file_ptr str_filepos; |
| |
| /* Size of a relocation entry in external form. */ |
| unsigned reloc_entry_size; |
| |
| /* Size of a symbol table entry in external form. */ |
| unsigned symbol_entry_size; |
| |
| /* Page size - needed for alignment of demand paged files. */ |
| unsigned long page_size; |
| |
| /* 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 aout_subformat subformat; |
| |
| 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; |
| char *external_strings; |
| bfd_size_type external_string_size; |
| struct aout_link_hash_entry **sym_hashes; |
| |
| /* A pointer for shared library information. */ |
| 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; |
| }; |
| |
| #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) |
| |
| /* We take the address of the first element of an asymbol to ensure that the |
| 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 |
| 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) |
| |
| #define set_aout_section_data(s,v) \ |
| ((s)->used_by_bfd = (void *)&(v)->relocs) |
| |
| /* Prototype declarations for functions defined in aoutx.h. */ |
| |
| extern bool NAME (aout, squirt_out_relocs) |
| (bfd *, asection *); |
| |
| extern bool NAME (aout, make_sections) |
| (bfd *); |
| |
| extern bfd_cleanup NAME (aout, some_aout_object_p) |
| (bfd *, struct internal_exec *, bfd_cleanup (*) (bfd *)); |
| |
| extern bool NAME (aout, mkobject) |
| (bfd *); |
| |
| extern enum machine_type NAME (aout, machine_type) |
| (enum bfd_architecture, unsigned long, bool *); |
| |
| extern bool NAME (aout, set_arch_mach) |
| (bfd *, enum bfd_architecture, unsigned long); |
| |
| extern bool NAME (aout, new_section_hook) |
| (bfd *, asection *); |
| |
| extern bool NAME (aout, set_section_contents) |
| (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); |
| |
| extern asymbol * NAME (aout, make_empty_symbol) |
| (bfd *); |
| |
| extern bool NAME (aout, translate_symbol_table) |
| (bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type, |
| char *, bfd_size_type, bool); |
| |
| extern bool NAME (aout, slurp_symbol_table) |
| (bfd *); |
| |
| extern bool NAME (aout, write_syms) |
| (bfd *); |
| |
| extern void NAME (aout, reclaim_symbol_table) |
| (bfd *); |
| |
| extern long NAME (aout, get_symtab_upper_bound) |
| (bfd *); |
| |
| extern long NAME (aout, canonicalize_symtab) |
| (bfd *, asymbol **); |
| |
| extern void NAME (aout, swap_ext_reloc_in) |
| (bfd *, struct reloc_ext_external *, arelent *, asymbol **, |
| bfd_size_type); |
| |
| extern void NAME (aout, swap_std_reloc_in) |
| (bfd *, struct reloc_std_external *, arelent *, asymbol **, |
| bfd_size_type); |
| |
| extern reloc_howto_type * NAME (aout, reloc_type_lookup) |
| (bfd *, bfd_reloc_code_real_type); |
| |
| extern reloc_howto_type * NAME (aout, reloc_name_lookup) |
| (bfd *, const char *); |
| |
| extern bool NAME (aout, slurp_reloc_table) |
| (bfd *, sec_ptr, asymbol **); |
| |
| extern long NAME (aout, canonicalize_reloc) |
| (bfd *, sec_ptr, arelent **, asymbol **); |
| |
| extern long NAME (aout, get_reloc_upper_bound) |
| (bfd *, sec_ptr); |
| |
| extern void NAME (aout, reclaim_reloc) |
| (bfd *, sec_ptr); |
| |
| extern alent * NAME (aout, get_lineno) |
| (bfd *, asymbol *); |
| |
| extern void NAME (aout, print_symbol) |
| (bfd *, void *, asymbol *, bfd_print_symbol_type); |
| |
| extern void NAME (aout, get_symbol_info) |
| (bfd *, asymbol *, symbol_info *); |
| |
| extern bool NAME (aout, find_nearest_line) |
| (bfd *, asymbol **, asection *, bfd_vma, |
| const char **, const char **, unsigned int *, unsigned int *); |
| |
| extern long NAME (aout, read_minisymbols) |
| (bfd *, bool, void * *, unsigned int *); |
| |
| extern asymbol * NAME (aout, minisymbol_to_symbol) |
| (bfd *, bool, const void *, asymbol *); |
| |
| extern int NAME (aout, sizeof_headers) |
| (bfd *, struct bfd_link_info *); |
| |
| extern bool NAME (aout, adjust_sizes_and_vmas) |
| (bfd *); |
| |
| extern void NAME (aout, swap_exec_header_in) |
| (bfd *, struct external_exec *, struct internal_exec *); |
| |
| extern bool 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 bool 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); |
| |
| extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create) |
| (bfd *); |
| |
| extern bool NAME (aout, link_add_symbols) |
| (bfd *, struct bfd_link_info *); |
| |
| extern bool NAME (aout, final_link) |
| (bfd *, struct bfd_link_info *, |
| void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *)); |
| |
| extern bool 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 |
| |
| /* 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_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) \ |
| { \ |
| if (adata(abfd).magic == undecided_magic) \ |
| 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)); \ |
| if (!NAME (aout, swap_exec_header_out) (abfd, execp, &exec_bytes)) \ |
| return false; \ |
| \ |
| if (bfd_seek (abfd, 0, SEEK_SET) != 0 \ |
| || bfd_write (&exec_bytes, EXEC_BYTES_SIZE, \ |
| abfd) != EXEC_BYTES_SIZE) \ |
| return false; \ |
| /* Now write out reloc info, followed by syms and strings. */ \ |
| \ |
| if (bfd_get_outsymbols (abfd) != NULL \ |
| && bfd_get_symcount (abfd) != 0) \ |
| { \ |
| if (bfd_seek (abfd, N_SYMOFF (execp), SEEK_SET) != 0) \ |
| return false; \ |
| \ |
| if (! NAME (aout, write_syms) (abfd)) \ |
| return false; \ |
| } \ |
| \ |
| if (bfd_seek (abfd, N_TRELOFF (execp), SEEK_SET) != 0) \ |
| return false; \ |
| if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd))) \ |
| return false; \ |
| \ |
| if (bfd_seek (abfd, 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) */ |