binutils-gdb/bfd/aix386-core.c

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/* BFD back-end for AIX on PS/2 core files.
This was based on trad-core.c, which was written by John Gilmore of
Cygnus Support.
Copyright 1988, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
Written by Minh Tran-Le <TRANLE@INTELLICORP.COM>.
Converted to back end form by Ian Lance Taylor <ian@cygnus.com>.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* To use this file on a particular host, configure the host with these
parameters in the config/h-HOST file:
HDEFINES=-DAIX386_CORE=1
HDEPFILES=aix386-core.o
*/
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "obstack.h"
#include "coff/i386.h"
#include "coff/internal.h"
#include "libcoff.h"
#include <stdio.h>
#include <stddef.h>
#include <signal.h>
#include <errno.h>
#if defined (_AIX) && defined (_I386)
#define NOCHECKS /* this is for coredump.h */
#define _h_USER /* avoid including user.h from coredump.h */
#include <uinfo.h>
#include <sys/i386/coredump.h>
#endif /* _AIX && _I386 */
/* maybe this could work on some other i386 but I have not tried it
* mtranle@paris - Tue Sep 24 12:49:35 1991
*/
#ifndef COR_MAGIC
# define COR_MAGIC "core"
#endif
/* need this cast because ptr is really void * */
#define core_hdr(bfd) \
(((bfd->tdata.trad_core_data))->hdr)
#define core_section(bfd,n) \
(((bfd)->tdata.trad_core_data)->sections[n])
#define core_regsec(bfd) \
(((bfd)->tdata.trad_core_data)->reg_section)
#define core_reg2sec(bfd) \
(((bfd)->tdata.trad_core_data)->reg2_section)
/* These are stored in the bfd's tdata */
struct trad_core_struct {
struct corehdr *hdr; /* core file header */
asection *reg_section;
asection *reg2_section;
asection *sections[MAX_CORE_SEGS];
};
static bfd_target *
aix386_core_file_p (abfd)
bfd *abfd;
{
int i,n;
unsigned char longbuf[4]; /* Raw bytes of various header fields */
int core_size = sizeof (struct corehdr);
struct corehdr *core;
struct mergem {
struct trad_core_struct coredata;
struct corehdr internal_core;
} *mergem;
bfd_set_error (bfd_error_system_call);
if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) != sizeof (longbuf))
return 0;
if (strncmp(longbuf,COR_MAGIC,4)) return 0;
if (bfd_seek (abfd, 0L, false) < 0) return 0;
mergem = (struct mergem *)bfd_zalloc (abfd, sizeof (struct mergem));
if (mergem == NULL)
{
bfd_set_error (bfd_error_no_memory);
return 0;
}
core = &mergem->internal_core;
if ((bfd_read ((PTR) core, 1, core_size, abfd)) != core_size)
{
bfd_set_error (bfd_error_system_call);
bfd_release (abfd, (char *)mergem);
return 0;
}
set_tdata (abfd, &mergem->coredata);
core_hdr (abfd) = core;
/* create the sections. This is raunchy, but bfd_close wants to reclaim
them */
core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
if (core_regsec (abfd) == NULL)
{
loser:
bfd_set_error (bfd_error_no_memory);
bfd_release (abfd, (char *)mergem);
return 0;
}
core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
if (core_reg2sec (abfd) == NULL)
{
loser1:
bfd_release (abfd, core_regsec (abfd));
goto loser;
}
for (i=0, n=0 ; (i < MAX_CORE_SEGS) && (core->cd_segs[i].cs_type) ; i++)
{
if (core->cd_segs[i].cs_offset == 0)
continue;
core_section (abfd,n) =
(asection *) bfd_zalloc (abfd, sizeof (asection));
if (core_section (abfd,n) == NULL)
{
int j;
if (n > 0)
{
for (j=0; j < n; j++)
bfd_release (abfd, core_section(abfd, j));
}
bfd_release (abfd, (char *)mergem);
goto loser1;
}
switch (core->cd_segs[i].cs_type)
{
case COR_TYPE_DATA:
core_section (abfd, n)->name = ".data";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD +
SEC_HAS_CONTENTS);
break;
case COR_TYPE_STACK:
core_section (abfd, n)->name = ".stack";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD +
SEC_HAS_CONTENTS);
break;
case COR_TYPE_LIBDATA:
core_section (abfd, n)->name = ".libdata";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
break;
case COR_TYPE_WRITE:
core_section (abfd, n)->name = ".writeable";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
break;
case COR_TYPE_MSC:
core_section (abfd, n)->name = ".misc";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
break;
default:
core_section (abfd, n)->name = ".unknown";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
break;
}
core_section (abfd, n)->_raw_size = core->cd_segs[i].cs_len;
core_section (abfd, n)->vma = core->cd_segs[i].cs_address;
core_section (abfd, n)->filepos = core->cd_segs[i].cs_offset;
core_section (abfd, n)->alignment_power = 2;
core_section (abfd, n)->next = NULL;
if (n > 0)
core_section (abfd, (n-1))->next = core_section (abfd, n);
abfd->section_count = ++n;
}
core_regsec (abfd)->name = ".reg";
core_reg2sec (abfd)->name = ".reg2";
core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
core_reg2sec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
core_regsec (abfd)->_raw_size = sizeof(core->cd_regs);
core_reg2sec (abfd)->_raw_size = sizeof(core->cd_fpregs);
core_regsec (abfd)->vma = -1;
core_reg2sec (abfd)->vma = -1;
/* We'll access the regs afresh in the core file, like any section: */
core_regsec (abfd)->filepos = (file_ptr)offsetof(struct corehdr,cd_regs[0]);
core_reg2sec (abfd)->filepos = (file_ptr)offsetof(struct corehdr,
cd_fpregs);
/* add the 2 reg fake sections to abfd */
abfd->section_count += 2;
abfd->sections = core_regsec (abfd);
core_regsec (abfd)->next = core_reg2sec (abfd);
core_reg2sec (abfd)->next = core_section (abfd, 0);
return abfd->xvec;
}
static char *
aix386_core_file_failing_command (abfd)
bfd *abfd;
{
return core_hdr (abfd)->cd_comm;
}
static int
aix386_core_file_failing_signal (abfd)
bfd *abfd;
{
return core_hdr (abfd)->cd_cursig;
}
static boolean
aix386_core_file_matches_executable_p (core_bfd, exec_bfd)
bfd *core_bfd;
bfd *exec_bfd;
{
return true; /* FIXME, We have no way of telling at this
point */
}
/* No archive file support via this BFD */
#define aix386_openr_next_archived_file bfd_generic_openr_next_archived_file
#define aix386_generic_stat_arch_elt bfd_generic_stat_arch_elt
#define aix386_slurp_armap bfd_false
#define aix386_slurp_extended_name_table bfd_true
#define aix386_write_armap (PROTO (boolean, (*), \
(bfd *arch, unsigned int elength, struct orl *map, \
unsigned int orl_count, int stridx))) bfd_false
#define aix386_truncate_arname bfd_dont_truncate_arname
#define aix386_close_and_cleanup bfd_generic_close_and_cleanup
#define aix386_set_section_contents (PROTO(boolean, (*), \
(bfd *abfd, asection *section, PTR data, file_ptr offset, \
bfd_size_type count))) bfd_generic_set_section_contents
#define aix386_get_section_contents bfd_generic_get_section_contents
#define aix386_new_section_hook (PROTO (boolean, (*), \
(bfd *, sec_ptr))) bfd_true
#define aix386_get_symtab_upper_bound bfd_0u
#define aix386_get_symtab (PROTO (unsigned int, (*), \
(bfd *, struct symbol_cache_entry **))) bfd_0u
#define aix386_get_reloc_upper_bound (PROTO (unsigned int, (*), \
(bfd *, sec_ptr))) bfd_0u
#define aix386_canonicalize_reloc (PROTO (unsigned int, (*), \
(bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
#define aix386_make_empty_symbol (PROTO ( \
struct symbol_cache_entry *, (*), (bfd *))) bfd_false
#define aix386_print_symbol (PROTO (void, (*), \
(bfd *, PTR, struct symbol_cache_entry *, \
bfd_print_symbol_type))) bfd_false
#define aix386_get_symbol_info (PROTO (void, (*), \
(bfd *, struct symbol_cache_entry *, \
symbol_info *))) bfd_false
#define aix386_get_lineno (PROTO (alent *, (*), \
(bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
#define aix386_set_arch_mach (PROTO (boolean, (*), \
(bfd *, enum bfd_architecture, unsigned long))) bfd_false
#define aix386_find_nearest_line (PROTO (boolean, (*), \
(bfd *abfd, struct sec *section, \
struct symbol_cache_entry **symbols,bfd_vma offset, \
CONST char **file, CONST char **func, unsigned int *line))) bfd_false
#define aix386_sizeof_headers (PROTO (int, (*), \
(bfd *, boolean))) bfd_0
#define aix386_bfd_debug_info_start bfd_void
#define aix386_bfd_debug_info_end bfd_void
#define aix386_bfd_debug_info_accumulate (PROTO (void, (*), \
(bfd *, struct sec *))) bfd_void
#define aix386_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
#define aix386_bfd_relax_section bfd_generic_relax_section
#define aix386_bfd_reloc_type_lookup \
((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
#define aix386_bfd_make_debug_symbol \
((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
Extensive changes to move the bulk of the linker into BFD so that more efficient backend code can be written for specific object files. Only existing efficient backend is a.out. * seclet.c, seclet.h: Removed. * hash.c, linker.c, genlink.h: New files. * bfd-in.h: Removed bfd_error_vector. Declared hash table structures and functions. (JUMP_TABLE): Removed bfd_seclet_link, added bfd_link_hash_table_create, bfd_link_add_symbols and bfd_final_link. * All backends: Changed accordingly. * bfd-in2.h: Rebuilt. * bfd.c (struct _bfd): Added link_next and archive_pass fields. Removed ld_symbols field. (bfd_nonrepresentable_section, bfd_undefined_symbol, bfd_reloc_value_truncated, bfd_reloc_is_dangerous, bfd_error_vector): Removed. (bfd_default_error_trap, bfd_error_trap, bfd_error_nonrepresentabltrap): Removed. (bfd_get_relocated_section_contents): Pass link_info. Pass link_order instead of seclet. Pass symbols. (bfd_relax_section): Pass link_info. (bfd_seclet_link): Removed. (bfd_link_hash_table_create, bfd_link_add_symbols, bfd_final_link): New macros. * libbfd-in.h: If __GNUC__ is defined and alloca is not, define alloca as __builtin_alloca. Declare internal linking functions. * libbfd.h: Rebuilt. * libbfd.c (bfd_seek): Comment out fseek assertion. It's worked for months. * reloc.c (reloc_howto_type): Added error_message argument to special_function field. Changed all callers and all definitions. (bfd_get_reloc_size): Make argument a const pointer. (bfd_perform_relocation): Add error_message argument to hold string set if return value if bfd_reloc_dangerous. Changed all callers. (_bfd_final_link_relocate, _bfd_relocate_contents): New functions. * section.c (asection): Renamed seclets_head and seclets_tail to link_order_head and link_order_tail. * targets.c (bfd_target): Replaced seclet argument with link_info and link_order and symbols arguments in bfd_get_relocated_section_contents. Added symbols argument to bfd_relax_section. Removed bfd_seclet_link. Added bfd_link_hash_table_create, bfd_link_add_symbols and bfd_final_link. * libaout.h (struct aoutdata): Added external_syms, external_sym_count, external_strings, sym_hashes fields. (obj_aout_external_syms, obj_aout_external_sym_count, obj_aout_external_strings, obj_aout_sym_hashes): New accessor macros. (WRITE_HEADERS): Only output symbols if outsymbols is not NULL. * aoutx.h: Wrote new back end linker routines. (translate_to_native_sym_flags): Return boolean value. Don't use bfd_error_vector. (NAME(aout,write_syms)): Return boolean value. Check return value of translate_to_native_sym_flags and bfd_write. * aout-target.h (final_link_callback): New function. (MY_bfd_final_link): New function. * aout-adobe.c (aout_adobe_write_object_contents): Check return value of aout_32_write_syms. * hp300hpux.c (MY(write_object_contents)): Likewise. * i386lynx.c (WRITE_HEADERS): Likewise. * libaout.h (WRITE_HEADERS): Likewise. * bout.c: Changed functions to use link_info->callbacks rather than bfd_error_vector, and link_orders rather than seclets. * coff-alpha.c: Likewise. * coff-h8300.c: Likewise. * coff-h8500.c: Likewise. * coff-sh.c: Likewise. * coff-z8k.c: Likewise. * elf32-hppa.c: Likewise. * reloc16.c: Likewise. * coff-alpha.c (alpha_ecoff_get_relocated_section_contents): Look up _gp in the hash table rather than in outsymbols. * coff-a29k.c (a29k_reloc): Pass errors back in new error_message argument rather than printing them. * coffcode.h (bfd_coff_reloc16_extra_cases): Take link_info and link_order arguments rather than seclet. Changed all uses and definitions. (bfd_coff_reloc16_estimate): Pass link_info arguments. Changed all uses and definitions. * libcoff.h: Rebuilt. * ecoff.c (ecoff_get_extr): If symbol is defined by linker, but not by ECOFF, make it scAbs. (ecoff_bfd_final_link): Renamed from ecoff_bfd_seclet_link and rewritten. * elf32-mips.c (mips_elf_final_link): Renamed from mips_elf_seclet_link and rewritten. * elf32-hppa.c (elf32_hppa_stub_description): Added link_info field. (new_stub, add_stub_by_name, hppa_elf_build_arg_reloc_stub, hppa_elf_build_long_branch_stub, hppa_look_for_stubs_in_section): Added link_info arguments. Changed all callers. * elfcode.h (elf_slurp_symbol_table): Don't quit if outsymbols is not NULL. * oasys.c (oasys_write_sections): Return boolean value rather than using bfd_error_vector. (oasys_write_object_contents): Check return value of oasys_write_sections. * hosts/std-host.h: Don't declare qsort or strtol. * Makefile.in: Rebuild dependencies. (BFD_LIBS): Removed seclet.o. Added hash.o and linker.o. (CFILES): Removed seclet.c. Added hash.c and linker.c. (HFILES): Removed seclet.h. Added genlink.h.
1993-12-30 20:56:50 +01:00
#define aix386_bfd_link_hash_table_create \
((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
#define aix386_bfd_link_add_symbols \
((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
#define aix386_bfd_final_link \
((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
/* If somebody calls any byte-swapping routines, shoot them. */
void
swap_abort()
{
abort(); /* This way doesn't require any declaration for ANSI to fuck up */
}
#define NO_GET ((PROTO(bfd_vma, (*), ( const bfd_byte *))) swap_abort )
#define NO_GETS ((PROTO(bfd_signed_vma, (*), (const bfd_byte *))) swap_abort )
#define NO_PUT ((PROTO(void, (*), (bfd_vma, bfd_byte *))) swap_abort )
bfd_target aix386_core_vec =
{
"aix386-core",
bfd_target_unknown_flavour,
true, /* target byte order */
true, /* target headers byte order */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
0, /* leading underscore */
' ', /* ar_pad_char */
16, /* ar_max_namelen */
3, /* minimum alignment power */
NO_GET, NO_GETS, NO_PUT,
NO_GET, NO_GETS, NO_PUT,
NO_GET, NO_GETS, NO_PUT, /* data */
NO_GET, NO_GETS, NO_PUT,
NO_GET, NO_GETS, NO_PUT,
NO_GET, NO_GETS, NO_PUT, /* hdrs */
{_bfd_dummy_target, _bfd_dummy_target,
_bfd_dummy_target, aix386_core_file_p},
{bfd_false, bfd_false, /* bfd_create_object */
bfd_false, bfd_false},
{bfd_false, bfd_false, /* bfd_write_contents */
bfd_false, bfd_false},
JUMP_TABLE(aix386),
(PTR) 0
};