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Diffstat (limited to 'contrib/gdb/bfd/libaout.h')
| -rw-r--r-- | contrib/gdb/bfd/libaout.h | 608 |
1 files changed, 0 insertions, 608 deletions
diff --git a/contrib/gdb/bfd/libaout.h b/contrib/gdb/bfd/libaout.h deleted file mode 100644 index 76c1dff7cdbd..000000000000 --- a/contrib/gdb/bfd/libaout.h +++ /dev/null @@ -1,608 +0,0 @@ -/* BFD back-end data structures for a.out (and similar) files. - Copyright 1990, 1991, 1992 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 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 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" - -/* Parameterize the a.out code based on whether it is being built - for a 32-bit architecture or a 64-bit architecture. */ -#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 -#ifndef NAME -#define NAME(x,y) CAT3(x,_64_,y) -#endif -#define JNAME(x) CAT(x,_64) -#define BYTES_IN_WORD 8 -#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 -#ifndef NAME -#define NAME(x,y) CAT3(x,_32_,y) -#endif -#define JNAME(x) CAT(x,_32) -#define BYTES_IN_WORD 4 -#endif /* ARCH_SIZE==32 */ - -/* 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. */ - 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, \ - (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (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; - - /* 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. */ - boolean (*set_sizes) PARAMS ((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. */ - boolean (*add_dynamic_symbols) PARAMS ((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. */ - boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *, - const char *, flagword, asection *, - bfd_vma, const char *, boolean, - boolean, - struct bfd_link_hash_entry **)); - - /* Called to handle linking a dynamic object. */ - boolean (*link_dynamic_object) PARAMS ((struct bfd_link_info *, bfd *)); - - /* Called for each global symbol being written out by the linker. - This should write out the dynamic symbol information. */ - boolean (*write_dynamic_symbol) PARAMS ((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. */ - boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *info, - bfd *input_bfd, - asection *input_section, - struct aout_link_hash_entry *h, - PTR reloc, bfd_byte *contents, - boolean *skip, - bfd_vma *relocation)); - - /* Called at the end of a link to finish up any dynamic linking - information. */ - boolean (*finish_dynamic_link) PARAMS ((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 >< >< 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 suns 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_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_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 */ -}; - -#define N_DYNAMIC(exec) ((exec).a_info & 0x80000000) - -#ifndef N_MAGIC -# define N_MAGIC(exec) ((exec).a_info & 0xffff) -#endif - -#ifndef N_MACHTYPE -# define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) -#endif - -#ifndef N_FLAGS -# define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) -#endif - -#ifndef N_SET_INFO -# define N_SET_INFO(exec, magic, type, flags) \ -((exec).a_info = ((magic) & 0xffff) \ - | (((int)(type) & 0xff) << 16) \ - | (((flags) & 0xff) << 24)) -#endif - -#ifndef N_SET_DYNAMIC -# define N_SET_DYNAMIC(exec, dynamic) \ -((exec).a_info = (dynamic) ? ((exec).a_info | 0x80000000) : \ -((exec).a_info & 0x7fffffff)) -#endif - -#ifndef N_SET_MAGIC -# define N_SET_MAGIC(exec, magic) \ -((exec).a_info = (((exec).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)) -#endif - -#ifndef N_SET_FLAGS -# define N_SET_FLAGS(exec, flags) \ -((exec).a_info = \ - ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 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. */ - -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 - { - default_format = 0, - /* Used on HP 9000/300 running HP/UX. See hp300hpux.c. */ - gnu_encap_format, - /* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */ - q_magic_format - } subformat; - - enum - { - undecided_magic = 0, - z_magic, - o_magic, - n_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; - - /* 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_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 */ -#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. */ - PTR 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 = (PTR)&(v)->relocs) - -/* Prototype declarations for functions defined in aoutx.h */ - -boolean -NAME(aout,squirt_out_relocs) PARAMS ((bfd *abfd, asection *section)); - -boolean -NAME(aout,make_sections) PARAMS ((bfd *)); - -const bfd_target * -NAME(aout,some_aout_object_p) PARAMS ((bfd *abfd, - struct internal_exec *execp, - const bfd_target *(*callback)(bfd *))); - -boolean -NAME(aout,mkobject) PARAMS ((bfd *abfd)); - -enum machine_type -NAME(aout,machine_type) PARAMS ((enum bfd_architecture arch, - unsigned long machine, - boolean *unknown)); - -boolean -NAME(aout,set_arch_mach) PARAMS ((bfd *abfd, enum bfd_architecture arch, - unsigned long machine)); - -boolean -NAME(aout,new_section_hook) PARAMS ((bfd *abfd, asection *newsect)); - -boolean -NAME(aout,set_section_contents) PARAMS ((bfd *abfd, sec_ptr section, - PTR location, file_ptr offset, bfd_size_type count)); - -asymbol * -NAME(aout,make_empty_symbol) PARAMS ((bfd *abfd)); - -boolean -NAME(aout,translate_symbol_table) PARAMS ((bfd *, aout_symbol_type *, - struct external_nlist *, - bfd_size_type, char *, - bfd_size_type, - boolean dynamic)); - -boolean -NAME(aout,slurp_symbol_table) PARAMS ((bfd *abfd)); - -boolean -NAME(aout,write_syms) PARAMS ((bfd *abfd)); - -void -NAME(aout,reclaim_symbol_table) PARAMS ((bfd *abfd)); - -long -NAME(aout,get_symtab_upper_bound) PARAMS ((bfd *abfd)); - -long -NAME(aout,get_symtab) PARAMS ((bfd *abfd, asymbol **location)); - -void -NAME(aout,swap_ext_reloc_in) PARAMS ((bfd *, struct reloc_ext_external *, - arelent *, asymbol **, bfd_size_type)); -void -NAME(aout,swap_std_reloc_in) PARAMS ((bfd *, struct reloc_std_external *, - arelent *, asymbol **, bfd_size_type)); - -reloc_howto_type * -NAME(aout,reloc_type_lookup) PARAMS ((bfd *abfd, - bfd_reloc_code_real_type code)); - -boolean -NAME(aout,slurp_reloc_table) PARAMS ((bfd *abfd, sec_ptr asect, - asymbol **symbols)); - -long -NAME(aout,canonicalize_reloc) PARAMS ((bfd *abfd, sec_ptr section, - arelent **relptr, asymbol **symbols)); - -long -NAME(aout,get_reloc_upper_bound) PARAMS ((bfd *abfd, sec_ptr asect)); - -void -NAME(aout,reclaim_reloc) PARAMS ((bfd *ignore_abfd, sec_ptr ignore)); - -alent * -NAME(aout,get_lineno) PARAMS ((bfd *ignore_abfd, asymbol *ignore_symbol)); - -void -NAME(aout,print_symbol) PARAMS ((bfd *ignore_abfd, PTR file, - asymbol *symbol, bfd_print_symbol_type how)); - -void -NAME(aout,get_symbol_info) PARAMS ((bfd *ignore_abfd, - asymbol *symbol, symbol_info *ret)); - -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)); - -long -NAME(aout,read_minisymbols) PARAMS ((bfd *, boolean, PTR *, unsigned int *)); - -asymbol * -NAME(aout,minisymbol_to_symbol) PARAMS ((bfd *, boolean, const PTR, - asymbol *)); - -int -NAME(aout,sizeof_headers) PARAMS ((bfd *abfd, boolean exec)); - -boolean -NAME(aout,adjust_sizes_and_vmas) PARAMS ((bfd *abfd, - bfd_size_type *text_size, file_ptr *text_end)); - -void -NAME(aout,swap_exec_header_in) PARAMS ((bfd *abfd, - struct external_exec *raw_bytes, struct internal_exec *execp)); - -void -NAME(aout,swap_exec_header_out) PARAMS ((bfd *abfd, - struct internal_exec *execp, struct external_exec *raw_bytes)); - -struct bfd_hash_entry * -NAME(aout,link_hash_newfunc) - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); - -boolean -NAME(aout,link_hash_table_init) - PARAMS ((struct aout_link_hash_table *, bfd *, - struct bfd_hash_entry *(*) (struct bfd_hash_entry *, - struct bfd_hash_table *, - const char *))); - -struct bfd_link_hash_table * -NAME(aout,link_hash_table_create) PARAMS ((bfd *)); - -boolean -NAME(aout,link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *)); - -boolean -NAME(aout,final_link) PARAMS ((bfd *, struct bfd_link_info *, - void (*) (bfd *, file_ptr *, file_ptr *, - file_ptr *))); - -boolean -NAME(aout,bfd_free_cached_info) PARAMS ((bfd *)); - -/* A.out uses the generic versions of these routines... */ - -#define aout_32_get_section_contents _bfd_generic_get_section_contents - -#define aout_64_get_section_contents _bfd_generic_get_section_contents -#ifndef NO_WRITE_HEADER_KLUDGE -#define NO_WRITE_HEADER_KLUDGE 0 -#endif - -#ifndef aout_32_bfd_is_local_label -#define aout_32_bfd_is_local_label bfd_generic_is_local_label -#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); \ - \ - 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); \ - \ - if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) return false; \ - if (bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) \ - != EXEC_BYTES_SIZE) \ - return false; \ - /* Now write out reloc info, followed by syms and strings */ \ - \ - if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \ - && bfd_get_symcount (abfd) != 0) \ - { \ - if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET) \ - != 0) \ - return false; \ - \ - if (! NAME(aout,write_syms)(abfd)) return false; \ - \ - 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) \ - return false; \ - \ - if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) \ - return false; \ - } \ - } -#endif - -#endif /* ! defined (LIBAOUT_H) */ |