X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Flibaout.h;h=8e620727419dd543c73bf4054536c185a329eef5;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=0797bc51ce3e1d7fd4be5f8ffc814eb24b8e347d;hpb=0fa4f690d6d05dd3b217a004d5f699deaf00c427;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/libaout.h b/bfd/libaout.h index 0797bc51ce..8e62072741 100644 --- a/bfd/libaout.h +++ b/bfd/libaout.h @@ -1,57 +1,214 @@ /* BFD back-end data structures for a.out (and similar) files. - Copyright (C) 1990-1991 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. */ -/* $Id$ */ - -#ifdef __STDC__ -#define CAT3(a,b,c) a##b##c -#else -#define CAT3(a,b,c) a/**/b/**/c -#endif +#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 (int64_type)GET_WORD -#define PUT_WORD bfd_h_put_64 -#define NAME(x,y) CAT3(x,_64_,y) -#define JNAME(x) CAT(x,_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 -#define GET_WORD bfd_h_get_32 -#define GET_SWORD (int32_type)GET_WORD -#define PUT_WORD bfd_h_put_32 -#define NAME(x,y) CAT3(x,_32_,y) -#define JNAME(x) CAT(x,_32) -#define BYTES_IN_WORD 4 +#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 these types at file level, since they are used in parameter - lists, which have wierd scope. */ +/* Declare at file level, since used in parameter lists, which have + weird scope. */ struct external_exec; -struct internal_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. */ + 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)) + +/* 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. */ + 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; + + /* 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)) /* This is the layout in memory of a "struct exec" while we process it. All 'lengths' are given as a number of bytes. @@ -61,62 +218,125 @@ struct internal_exec; 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 */ + 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 > -*/ -enum machine_type { +/* Magic number is written + < MSB > + 3130292827262524232221201918171615141312111009080706050403020100 + < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */ + +/* Magic number for NetBSD is + + 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 dont 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, - 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 & 0x8000000) +#define N_DYNAMIC(execp) ((execp)->a_info & 0x80000000) -#define N_MAGIC(exec) ((exec).a_info & 0xffff) -#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) -#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) -#define N_SET_INFO(exec, magic, type, flags) \ -((exec).a_info = ((magic) & 0xffff) \ +#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) & 0xff) << 24)) + | (((flags) & 0xffu) << 24)) +#endif -#define N_SET_MAGIC(exec, magic) \ -((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) +#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 -#define N_SET_MACHTYPE(exec, machtype) \ -((exec).a_info = \ - ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) +#ifndef N_SET_MACHTYPE +# define N_SET_MACHTYPE(execp, machtype) \ +((execp)->a_info = \ + ((execp)->a_info & 0xff00ffff) | ((((int) (machtype)) &0xff) << 16)) +#endif -#define N_SET_FLAGS(exec, flags) \ -((exec).a_info = \ - ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) +#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 { +typedef struct aout_symbol +{ asymbol symbol; short desc; char other; @@ -127,11 +347,28 @@ typedef struct aout_symbol { 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; @@ -141,170 +378,306 @@ struct aoutdata { 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 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; + 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. */ + 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; }; -#define adata(bfd) ((struct aoutdata *) ((bfd)->tdata)) -#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) +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 */ + 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 */ - -PROTO (boolean, NAME(aout,squirt_out_relocs),(bfd *abfd, asection *section)); - -PROTO (bfd_target *, NAME(aout,some_aout_object_p), (bfd *abfd, - struct internal_exec *execp, - bfd_target *(*callback)())); -PROTO (boolean, NAME(aout,mkobject), (bfd *abfd)); -PROTO (enum machine_type, NAME(aout,machine_type), (enum bfd_architecture arch, - unsigned long machine)); -PROTO (boolean, NAME(aout,set_arch_mach), (bfd *abfd, enum bfd_architecture arch, - unsigned long machine)); - -PROTO (boolean, NAME(aout,new_section_hook), (bfd *abfd, asection *newsect)); -PROTO (boolean, NAME(aout,set_section_contents), (bfd *abfd, sec_ptr section, - PTR location, file_ptr offset, bfd_size_type count)); - -PROTO (asymbol *,NAME(aout,make_empty_symbol), (bfd *abfd)); -PROTO (boolean, NAME(aout,slurp_symbol_table), (bfd *abfd)); -PROTO (void, NAME(aout,write_syms), (bfd *abfd)); -PROTO (void, NAME(aout,reclaim_symbol_table), (bfd *abfd)); -PROTO (unsigned int, NAME(aout,get_symtab_upper_bound), (bfd *abfd)); -PROTO (unsigned int, NAME(aout,get_symtab), (bfd *abfd, asymbol **location)); -PROTO (boolean, NAME(aout,slurp_reloc_table), (bfd *abfd, sec_ptr asect, - asymbol **symbols)); -PROTO (unsigned int, NAME(aout,canonicalize_reloc), (bfd *abfd, sec_ptr section, - arelent **relptr, asymbol **symbols)); -PROTO (unsigned int, NAME(aout,get_reloc_upper_bound), (bfd *abfd, sec_ptr asect)); -PROTO (void, NAME(aout,reclaim_reloc), (bfd *ignore_abfd, sec_ptr ignore)); -PROTO (alent *, NAME(aout,get_lineno), (bfd *ignore_abfd, asymbol *ignore_symbol)); -PROTO (void, NAME(aout,print_symbol), (bfd *ignore_abfd, PTR file, - asymbol *symbol, bfd_print_symbol_type how)); -PROTO (boolean, NAME(aout,close_and_cleanup), (bfd *abfd)); -PROTO (boolean, NAME(aout,find_nearest_line), (bfd *abfd, asection *section, - asymbol **symbols, bfd_vma offset, CONST char **filename_ptr, - CONST char **functionname_ptr, unsigned int *line_ptr)); -PROTO (int, NAME(aout,sizeof_headers), (bfd *ignore_abfd, boolean exec)); - - -PROTO (void, NAME(aout,swap_exec_header_in), (bfd *abfd, - struct external_exec *raw_bytes, struct internal_exec *execp)); - -PROTO (void, NAME(aout,swap_exec_header_out),(bfd *abfd, struct internal_exec *execp, - struct external_exec *raw_bytes)); - -/* A.out uses the generic versions of these routines... */ - -#define aout_32_get_section_contents bfd_generic_get_section_contents -#define aout_32_close_and_cleanup bfd_generic_close_and_cleanup - -#define aout_64_get_section_contents bfd_generic_get_section_contents -#define aout_64_close_and_cleanup bfd_generic_close_and_cleanup - -/* Calculate the file positions of the parts of a newly read aout header */ -#define WORK_OUT_FILE_POSITIONS(abfd, execp) \ - /* The virtual memory addresses of the sections */ \ - obj_datasec (abfd)->vma = N_DATADDR(*execp); \ - obj_bsssec (abfd)->vma = N_BSSADDR(*execp); \ - obj_textsec (abfd)->vma = N_TXTADDR(*execp); \ - \ - /* The file offsets of the sections */ \ - obj_textsec (abfd)->filepos = N_TXTOFF (*execp); \ - obj_datasec (abfd)->filepos = N_DATOFF (*execp); \ - \ - /* The file offsets of the relocation info */ \ - obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); \ - obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); \ - \ - /* The file offsets of the string table and symbol table. */ \ - obj_sym_filepos (abfd) = N_SYMOFF (*execp); \ - obj_str_filepos (abfd) = N_STROFF (*execp); \ +/* 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 bfd_boolean NAME (aout, squirt_out_relocs) + (bfd *, asection *); + +extern bfd_boolean NAME (aout, make_sections) + (bfd *); + +extern bfd_cleanup NAME (aout, some_aout_object_p) + (bfd *, struct internal_exec *, bfd_cleanup (*) (bfd *)); + +extern bfd_boolean NAME (aout, mkobject) + (bfd *); + +extern enum machine_type NAME (aout, machine_type) + (enum bfd_architecture, unsigned long, bfd_boolean *); + +extern bfd_boolean NAME (aout, set_arch_mach) + (bfd *, enum bfd_architecture, unsigned long); + +extern bfd_boolean NAME (aout, new_section_hook) + (bfd *, asection *); + +extern bfd_boolean NAME (aout, set_section_contents) + (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); + +extern asymbol * NAME (aout, make_empty_symbol) + (bfd *); + +extern bfd_boolean NAME (aout, translate_symbol_table) + (bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type, + char *, bfd_size_type, bfd_boolean); + +extern bfd_boolean NAME (aout, slurp_symbol_table) + (bfd *); + +extern bfd_boolean 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 bfd_boolean 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 bfd_boolean 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 *, bfd_boolean, void * *, unsigned int *); + +extern asymbol * NAME (aout, minisymbol_to_symbol) + (bfd *, bfd_boolean, const void *, asymbol *); + +extern int NAME (aout, sizeof_headers) + (bfd *, struct bfd_link_info *); + +extern bfd_boolean NAME (aout, adjust_sizes_and_vmas) + (bfd *); + +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); + +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 + +/* 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 (abfd->flags & D_PAGED) \ - { \ - execp->a_text = obj_textsec (abfd)->size; \ - /* Kludge to distinguish old- and new-style ZMAGIC. \ - The latter includes the exec header in the text size. */ \ - if (obj_textsec(abfd)->filepos == EXEC_BYTES_SIZE) \ - execp->a_text += EXEC_BYTES_SIZE; \ - N_SET_MAGIC (*execp, ZMAGIC); \ - } \ - else \ - { \ - execp->a_text = obj_textsec (abfd)->size; \ - if (abfd->flags & WP_TEXT) \ - { N_SET_MAGIC (*execp, NMAGIC); } \ - else \ - { N_SET_MAGIC(*execp, OMAGIC); } \ - } \ - if (abfd->flags & D_PAGED) \ - { \ - data_pad = ALIGN(obj_datasec(abfd)->size, PAGE_SIZE) \ - - obj_datasec(abfd)->size; \ - \ - if (data_pad > obj_bsssec(abfd)->size) \ - execp->a_bss = 0; \ - else \ - execp->a_bss = obj_bsssec(abfd)->size - data_pad; \ - execp->a_data = obj_datasec(abfd)->size + data_pad; \ - } \ - else \ - { \ - execp->a_data = obj_datasec (abfd)->size; \ - execp->a_bss = obj_bsssec (abfd)->size; \ - } \ - \ + 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)); \ - NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \ + NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \ \ - bfd_seek (abfd, 0L, false); \ - bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); \ - /* Now write out reloc info, followed by syms and strings */ \ - \ - if (bfd_get_symcount (abfd) != 0) \ - { \ - bfd_seek (abfd, \ - (long)(N_SYMOFF(*execp)), false); \ + 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. */ \ \ - NAME(aout,write_syms)(abfd); \ + 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, (long)(N_TRELOFF(*execp)), false); \ + if (! NAME (aout, write_syms) (abfd)) \ + return FALSE; \ + } \ \ - if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \ - bfd_seek (abfd, (long)(N_DRELOFF(*execp)), 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 (!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) */