diff options
Diffstat (limited to 'bfd/host-aout.c')
| -rw-r--r-- | bfd/host-aout.c | 338 |
1 files changed, 37 insertions, 301 deletions
diff --git a/bfd/host-aout.c b/bfd/host-aout.c index cf556d0..e8aae5e 100644 --- a/bfd/host-aout.c +++ b/bfd/host-aout.c @@ -22,325 +22,61 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "sysdep.h" #include "libbfd.h" -#include <a.out.h> -#include "libaout.h" /* BFD a.out internal data structures */ - -#include "trad-core.h" /* Traditional Unix core files */ - -/*======== This next section is stolen from ../include/a.out.gnu.h - ======== for all the losing Unix systems that don't provide these - ======== macros. +#define ARCH_SIZE 32 - When porting to a new system, you must supply: +/* When porting to a new system, you must supply: - HOST_PAGE_SIZE - HOST_SEGMENT_SIZE + HOST_PAGE_SIZE (optional) + HOST_SEGMENT_SIZE (optional -- defaults to page size) HOST_MACHINE_ARCH (optional) HOST_MACHINE_MACHINE (optional) - HOST_TEXT_START_ADDR - HOST_STACK_END_ADDR - - in the ../include/h-systemname.h file. */ - -#define PAGE_SIZE HOST_PAGE_SIZE -#define SEGMENT_SIZE HOST_SEGMENT_SIZE -#define TEXT_START_ADDR HOST_TEXT_START_ADDR -#define STACK_END_ADDR HOST_STACK_END_ADDR - -/*======== Stolen section begins below. =================================*/ - -#define a_info a_magic /* Old traditional Unix */ - -#define N_MAGIC(exec) ((exec).a_info & 0xffff) -#define N_SET_MAGIC(exec, magic) \ - ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) - -/* Virtual Address of text segment from the a.out file. For OMAGIC, - (almost always "unlinked .o's" these days), should be zero. - For linked files, should reflect reality if we know it. */ - -#ifndef N_TXTADDR -#define N_TXTADDR(x) (N_MAGIC(x)==OMAGIC? 0 : TEXT_START_ADDR) -#endif - -#ifndef N_BADMAG -#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ - && N_MAGIC(x) != NMAGIC \ - && N_MAGIC(x) != ZMAGIC) -#endif + HOST_TEXT_START_ADDR (optional) + HOST_STACK_END_ADDR (not used, except by trad-core ???) + HOST_SHORT_HEADER_HACK (optional) -/* This complexity is for encapsulated COFF support */ -#ifndef _N_HDROFF -#define _N_HDROFF(x) (SEGMENT_SIZE - sizeof (struct exec)) -#endif + in the ./hosts/h-systemname.h file. -#ifndef N_TXTOFF -#define N_TXTOFF(x) (N_MAGIC(x) == ZMAGIC ? \ - _N_HDROFF((x)) + sizeof (struct exec) : \ - sizeof (struct exec)) -#endif + For most of these, you can get by with the values computed + by the program aout-gen, which writes the result into aout-params.h. */ +#include "aout-params.h" -#ifndef N_DATOFF -#define N_DATOFF(x) ( N_TXTOFF(x) + (x).a_text ) -#endif - -#ifndef N_TRELOFF -#define N_TRELOFF(x) ( N_DATOFF(x) + (x).a_data ) -#endif - -#ifndef N_DRELOFF -#define N_DRELOFF(x) ( N_TRELOFF(x) + (x).a_trsize ) +#ifdef HOST_PAGE_SIZE +#define PAGE_SIZE HOST_PAGE_SIZE #endif - -#ifndef N_SYMOFF -#define N_SYMOFF(x) ( N_DRELOFF(x) + (x).a_drsize ) +#ifdef HOST_SEGMENT_SIZE +#define SEGMENT_SIZE HOST_SEGMENT_SIZE +#else +#define SEGMENT_SIZE PAGE_SIZE #endif - -#ifndef N_STROFF -#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms ) +#ifdef HOST_TEXT_START_ADDR +#define TEXT_START_ADDR HOST_TEXT_START_ADDR #endif - -/* Address of text segment in memory after it is loaded. */ -#ifndef N_TXTADDR -#define N_TXTADDR(x) 0 +#ifdef HOST_STACK_END_ADDR +#define STACK_END_ADDR HOST_STACK_END_ADDR #endif - -#ifndef N_DATADDR -#define N_DATADDR(x) \ - (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) \ - : (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1)))) +#ifndef N_HEADER_IN_TEXT +#ifdef HOST_SHORT_HEADER_HACK +#define N_HEADER_IN_TEXT(x) 1 +#else +#define N_HEADER_IN_TEXT(x) 0 #endif - -/* Address of bss segment in memory after it is loaded. */ -#ifndef N_BSSADDR -#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) #endif - -static bfd_target *NAME(host_aout,callback) (); - -/*SUPPRESS558*/ -/*SUPPRESS529*/ - -bfd_target * -DEFUN(NAME(host_aout,object_p), (abfd), - bfd *abfd) -{ - unsigned char magicbuf[4]; /* Raw bytes of magic number from file */ - struct external_exec exec_bytes; - struct internal_exec exec; - - if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) - != EXEC_BYTES_SIZE) { - bfd_error = wrong_format; - return 0; - } - - exec.a_magic = bfd_h_get_32 (abfd, exec_bytes.a_magic); - - if (N_BADMAG (exec)) return 0; - - NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec); - return NAME(aout,some_aout_object_p) (abfd, &exec, NAME(host_aout,callback)); -} - -/* Set parameters about this a.out file that are machine-dependent. - This routine is called from NAME(some_aout_object_p) just before it returns. - */ - -static bfd_target * -DEFUN(NAME(host_aout,callback), (abfd), - bfd *abfd) -{ - /* exec_hdr (abfd), a "struct internal_exec *", is just an abstraction, - as far as the BFD a.out layer cares. We use it as a "struct exec *". - This routine moves any data from the exec header, - which is needed by the BFD code, out to places known to BFD. This - allows the rest of the BFD code to not know or care about the structure - of exec_hdr (abfd). */ - struct exec *execp = (struct exec *)exec_hdr (abfd); - - /* 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_str_filepos (abfd) = N_STROFF (*execp); - obj_sym_filepos (abfd) = N_SYMOFF (*execp); +#include "libaout.h" /* BFD a.out internal data structures */ +#include "aout/aout64.h" #ifdef HOST_MACHINE_ARCH - bfd_default_set_arch_mach(abfd, - HOST_MACHINE_ARCH, #ifdef HOST_MACHINE_MACHINE - HOST_MACHINE_MACHINE -#else /* not HOST_MACHINE_MACHINE */ - 0 -#endif /* not HOST_MACHINE_MACHINE */ - ); +#define SET_ARCH_MACH(abfd, execp) \ + bfd_default_set_arch_mach(abfd, HOST_MACHINE_ARCH, HOST_MACHINE_MACHINE) +#else +#define SET_ARCH_MACH(abfd, execp) \ + bfd_default_set_arch_mach(abfd, HOST_MACHINE_ARCH, 0) +#endif #endif /* HOST_MACHINE_ARCH */ - obj_reloc_entry_size (abfd) = sizeof (struct relocation_info); - return abfd->xvec; -} - - -boolean -DEFUN(NAME(host_aout,mkobject), (abfd), - bfd *abfd) -{ - /* This struct is just for allocating two things with one zalloc, so - they will be freed together, without violating alignment constraints. */ - struct aout_exec { - struct aoutdata aoutdata; - struct exec exec; - } *rawptr; - - bfd_error = system_call_error; - - /* Use an intermediate variable for clarity */ - rawptr = (struct aout_exec *)bfd_zalloc (abfd, sizeof (struct aout_exec)); - - if (rawptr == NULL) { - bfd_error = no_memory; - return false; - } - - set_tdata (abfd, &rawptr->aoutdata); - /* exec_hdr (abfd), a "struct internal_exec *", is just an abstraction, - as far as the BFD a.out layer cares. We use it as a "struct exec *". */ - exec_hdr (abfd) = (struct internal_exec *) &rawptr->exec; - - /* For simplicity's sake we just make all the sections right here. */ - - obj_textsec (abfd) = (asection *)NULL; - obj_datasec (abfd) = (asection *)NULL; - obj_bsssec (abfd) = (asection *)NULL; - bfd_make_section (abfd, ".text"); - bfd_make_section (abfd, ".data"); - bfd_make_section (abfd, ".bss"); - - return true; -} - -/* Write an object file in host a.out format. - Section contents have already been written. We write the - file header, symbols, and relocation. */ - -boolean -DEFUN(NAME(host_aout,write_object_contents), (abfd), - bfd *abfd) -{ -/* This works because we are on the host system */ -#define EXEC_BYTES_SIZE (sizeof (struct exec)) -#define EXTERNAL_NLIST_SIZE (sizeof (struct nlist)) - size_t data_pad = 0; - unsigned char exec_bytes[EXEC_BYTES_SIZE]; - struct exec *execp = (struct exec *)exec_hdr (abfd); - - execp->a_text = obj_textsec (abfd)->size; - - WRITE_HEADERS (abfd, execp); - return true; -} - -/* We use BFD generic archive files. */ -#define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file -#define aout_32_generic_stat_arch_elt bfd_generic_stat_arch_elt -#define aout_32_slurp_armap bfd_false -#define aout_32_slurp_extended_name_table bfd_true -#define aout_32_write_armap (PROTO (boolean, (*), \ - (bfd *arch, unsigned int elength, struct orl *map, int orl_count, \ - int stridx))) bfd_false -#define aout_32_truncate_arname bfd_dont_truncate_arname - -/* No core file defined here -- configure in trad-core.c separately. */ -#define aout_32_core_file_failing_command bfd_false -#define aout_32_core_file_failing_signal bfd_false -#define aout_32_core_file_matches_executable_p bfd_true -#define some_kinda_core_file_p bfd_false - -#define aout_32_bfd_debug_info_start bfd_void -#define aout_32_bfd_debug_info_end bfd_void -#define aout_32_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void - -#define aout_64_openr_next_archived_file aout_32_openr_next_archived_file -#define aout_64_generic_stat_arch_elt aout_32_generic_stat_arch_elt -#define aout_64_slurp_armap aout_32_slurp_armap -#define aout_64_slurp_extended_name_table aout_32_slurp_extended_name_table -#define aout_64_write_armap aout_32_write_armap -#define aout_64_truncate_arname aout_32_truncate_arname - -#define aout_64_core_file_failing_command aout_32_core_file_failing_command -#define aout_64_core_file_failing_signal aout_32_core_file_failing_signal -#define aout_64_core_file_matches_executable_p aout_32_core_file_matches_executable_p - -#define aout_64_bfd_debug_info_start aout_32_bfd_debug_info_start -#define aout_64_bfd_debug_info_end aout_32_bfd_debug_info_end -#define aout_64_bfd_debug_info_accumulate aout_32_bfd_debug_info_accumulate - - -/* We implement these routines ourselves, rather than using the generic - a.out versions. */ -#define aout_write_object_contents host_write_object_contents - -bfd_target host_aout_big_vec = - { - "a.out-host-big", - bfd_target_aout_flavour, - true, /* target byte order */ - true, /* target headers byte order */ - (HAS_RELOC | EXEC_P | /* object flags */ - HAS_LINENO | HAS_DEBUG | - HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), - (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ - ' ', /* ar_pad_char */ - 16, /* ar_max_namelen */ - 3, /* minimum alignment power */ - _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */ - _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */ - - {_bfd_dummy_target, NAME(host_aout,object_p), - bfd_generic_archive_p, some_kinda_core_file_p}, - {bfd_false, NAME(host_aout,mkobject), - _bfd_generic_mkarchive, bfd_false}, - {bfd_false, NAME(host_aout,write_object_contents), /* bfd_write_contents */ - _bfd_write_archive_contents, bfd_false}, - - JUMP_TABLE(JNAME(aout)) -}; +#define MY(OP) CAT(host_aout_,OP) +#define TARGETNAME "a.out" -bfd_target host_aout_little_vec = - { - "a.out-host-little", - bfd_target_aout_flavour, - false, /* target byte order */ - false, /* target headers byte order */ - (HAS_RELOC | EXEC_P | /* object flags */ - HAS_LINENO | HAS_DEBUG | - HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), - (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ - ' ', /* ar_pad_char */ - 16, /* ar_max_namelen */ - 3, /* minimum alignment power */ - _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putb16, /* data */ - _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */ - - {_bfd_dummy_target, NAME(host_aout,object_p), - bfd_generic_archive_p, some_kinda_core_file_p}, - {bfd_false, NAME(host_aout,mkobject), - _bfd_generic_mkarchive, bfd_false}, - {bfd_false, NAME(host_aout,write_object_contents), /* bfd_write_contents */ - _bfd_write_archive_contents, bfd_false}, - - JUMP_TABLE(JNAME(aout)) -}; +#include "aout-target.h" |