284 lines
8.3 KiB
C
284 lines
8.3 KiB
C
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/* BFD back-end for AIX on PS/2 core files.
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This was based on trad-core.c, which was written by John Gilmore of
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Cygnus Support.
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Copyright 1988, 89, 91, 92, 93, 94, 95, 96, 97, 1998
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Free Software Foundation, Inc.
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Written by Minh Tran-Le <TRANLE@INTELLICORP.COM>.
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Converted to back end form by Ian Lance Taylor <ian@cygnus.com>.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "coff/i386.h"
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#include "coff/internal.h"
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#include "libcoff.h"
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#include <signal.h>
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#if defined (_AIX) && defined (_I386)
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#define NOCHECKS /* this is for coredump.h */
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#define _h_USER /* avoid including user.h from coredump.h */
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#include <uinfo.h>
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#include <sys/i386/coredump.h>
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#endif /* _AIX && _I386 */
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/* maybe this could work on some other i386 but I have not tried it
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* mtranle@paris - Tue Sep 24 12:49:35 1991
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*/
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#ifndef COR_MAGIC
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# define COR_MAGIC "core"
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#endif
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/* need this cast because ptr is really void * */
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#define core_hdr(bfd) \
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(((bfd->tdata.trad_core_data))->hdr)
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#define core_section(bfd,n) \
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(((bfd)->tdata.trad_core_data)->sections[n])
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#define core_regsec(bfd) \
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(((bfd)->tdata.trad_core_data)->reg_section)
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#define core_reg2sec(bfd) \
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(((bfd)->tdata.trad_core_data)->reg2_section)
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/* These are stored in the bfd's tdata */
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struct trad_core_struct {
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struct corehdr *hdr; /* core file header */
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asection *reg_section;
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asection *reg2_section;
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asection *sections[MAX_CORE_SEGS];
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};
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static void swap_abort PARAMS ((void));
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static const bfd_target *
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aix386_core_file_p (abfd)
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bfd *abfd;
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{
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int i,n;
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unsigned char longbuf[4]; /* Raw bytes of various header fields */
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int core_size = sizeof (struct corehdr);
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struct corehdr *core;
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struct mergem {
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struct trad_core_struct coredata;
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struct corehdr internal_core;
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} *mergem;
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if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) != sizeof (longbuf))
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{
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_wrong_format);
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return 0;
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}
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if (strncmp(longbuf,COR_MAGIC,4)) return 0;
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if (bfd_seek (abfd, 0L, false) < 0) return 0;
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mergem = (struct mergem *)bfd_zalloc (abfd, sizeof (struct mergem));
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if (mergem == NULL)
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return 0;
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core = &mergem->internal_core;
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if ((bfd_read ((PTR) core, 1, core_size, abfd)) != core_size)
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{
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_wrong_format);
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bfd_release (abfd, (char *)mergem);
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return 0;
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}
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set_tdata (abfd, &mergem->coredata);
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core_hdr (abfd) = core;
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/* create the sections. This is raunchy, but bfd_close wants to reclaim
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them */
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core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_regsec (abfd) == NULL)
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{
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loser:
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bfd_release (abfd, (char *)mergem);
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return 0;
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}
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core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_reg2sec (abfd) == NULL)
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{
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loser1:
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bfd_release (abfd, core_regsec (abfd));
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goto loser;
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}
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for (i=0, n=0 ; (i < MAX_CORE_SEGS) && (core->cd_segs[i].cs_type) ; i++)
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{
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if (core->cd_segs[i].cs_offset == 0)
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continue;
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core_section (abfd,n) =
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(asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_section (abfd,n) == NULL)
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{
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int j;
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if (n > 0)
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{
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for (j=0; j < n; j++)
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bfd_release (abfd, core_section(abfd, j));
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}
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bfd_release (abfd, (char *)mergem);
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goto loser1;
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}
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switch (core->cd_segs[i].cs_type)
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{
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case COR_TYPE_DATA:
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core_section (abfd, n)->name = ".data";
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core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD +
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SEC_HAS_CONTENTS);
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break;
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case COR_TYPE_STACK:
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core_section (abfd, n)->name = ".stack";
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core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD +
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SEC_HAS_CONTENTS);
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break;
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case COR_TYPE_LIBDATA:
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core_section (abfd, n)->name = ".libdata";
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core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
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break;
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case COR_TYPE_WRITE:
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core_section (abfd, n)->name = ".writeable";
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core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
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break;
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case COR_TYPE_MSC:
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core_section (abfd, n)->name = ".misc";
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core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
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break;
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default:
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core_section (abfd, n)->name = ".unknown";
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core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
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break;
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}
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core_section (abfd, n)->_raw_size = core->cd_segs[i].cs_len;
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core_section (abfd, n)->vma = core->cd_segs[i].cs_address;
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core_section (abfd, n)->filepos = core->cd_segs[i].cs_offset;
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core_section (abfd, n)->alignment_power = 2;
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core_section (abfd, n)->next = NULL;
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if (n > 0)
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core_section (abfd, (n-1))->next = core_section (abfd, n);
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abfd->section_count = ++n;
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}
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core_regsec (abfd)->name = ".reg";
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core_reg2sec (abfd)->name = ".reg2";
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core_regsec (abfd)->flags = SEC_HAS_CONTENTS;
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core_reg2sec (abfd)->flags = SEC_HAS_CONTENTS;
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core_regsec (abfd)->_raw_size = sizeof(core->cd_regs);
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core_reg2sec (abfd)->_raw_size = sizeof(core->cd_fpregs);
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core_regsec (abfd)->vma = -1;
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core_reg2sec (abfd)->vma = -1;
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/* We'll access the regs afresh in the core file, like any section: */
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core_regsec (abfd)->filepos = (file_ptr)offsetof(struct corehdr,cd_regs[0]);
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core_reg2sec (abfd)->filepos = (file_ptr)offsetof(struct corehdr,
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cd_fpregs);
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/* add the 2 reg fake sections to abfd */
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abfd->section_count += 2;
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abfd->sections = core_regsec (abfd);
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core_regsec (abfd)->next = core_reg2sec (abfd);
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core_reg2sec (abfd)->next = core_section (abfd, 0);
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return abfd->xvec;
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}
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static char *
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aix386_core_file_failing_command (abfd)
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bfd *abfd;
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{
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return core_hdr (abfd)->cd_comm;
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}
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static int
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aix386_core_file_failing_signal (abfd)
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bfd *abfd;
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{
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return core_hdr (abfd)->cd_cursig;
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}
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static boolean
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aix386_core_file_matches_executable_p (core_bfd, exec_bfd)
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bfd *core_bfd;
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bfd *exec_bfd;
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{
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return true; /* FIXME, We have no way of telling at this
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point */
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}
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/* If somebody calls any byte-swapping routines, shoot them. */
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static void
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swap_abort()
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{
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abort(); /* This way doesn't require any declaration for ANSI to fuck up */
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}
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#define NO_GET ((PROTO(bfd_vma, (*), ( const bfd_byte *))) swap_abort )
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#define NO_GETS ((PROTO(bfd_signed_vma, (*), (const bfd_byte *))) swap_abort )
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#define NO_PUT ((PROTO(void, (*), (bfd_vma, bfd_byte *))) swap_abort )
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const bfd_target aix386_core_vec =
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{
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"aix386-core",
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bfd_target_unknown_flavour,
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BFD_ENDIAN_BIG, /* target byte order */
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BFD_ENDIANG_BIG, /* target headers byte order */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | WP_TEXT),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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0, /* leading underscore */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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NO_GET, NO_GETS, NO_PUT,
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NO_GET, NO_GETS, NO_PUT,
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NO_GET, NO_GETS, NO_PUT, /* data */
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NO_GET, NO_GETS, NO_PUT,
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NO_GET, NO_GETS, NO_PUT,
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NO_GET, NO_GETS, NO_PUT, /* hdrs */
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{_bfd_dummy_target, _bfd_dummy_target,
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_bfd_dummy_target, aix386_core_file_p},
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{bfd_false, bfd_false, /* bfd_create_object */
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bfd_false, bfd_false},
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{bfd_false, bfd_false, /* bfd_write_contents */
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bfd_false, bfd_false},
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BFD_JUMP_TABLE_GENERIC (_bfd_generic),
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BFD_JUMP_TABLE_COPY (_bfd_generic),
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BFD_JUMP_TABLE_CORE (aix386),
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BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
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BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
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BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
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BFD_JUMP_TABLE_WRITE (_bfd_generic),
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BFD_JUMP_TABLE_LINK (_bfd_nolink),
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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(PTR) 0
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};
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