339 lines
8.4 KiB
C
339 lines
8.4 KiB
C
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/* BFD back-end for Irix core files.
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Copyright (C) 1993-2022 Free Software Foundation, Inc.
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Written by Stu Grossman, Cygnus Support.
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Converted to back-end form by Ian Lance Taylor, Cygnus Support
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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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* This file can only be compiled on systems which use Irix style core
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files (namely, Irix 4 and Irix 5, so far). */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#ifdef IRIX_CORE
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#include <core.out.h>
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struct sgi_core_struct
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{
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int sig;
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char cmd[CORE_NAMESIZE];
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};
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#define core_hdr(bfd) ((bfd)->tdata.sgi_core_data)
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#define core_signal(bfd) (core_hdr(bfd)->sig)
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#define core_command(bfd) (core_hdr(bfd)->cmd)
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#define irix_core_core_file_matches_executable_p generic_core_file_matches_executable_p
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#define irix_core_core_file_pid _bfd_nocore_core_file_pid
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static asection *make_bfd_asection
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(bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr);
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/* Helper function for irix_core_core_file_p:
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32-bit and 64-bit versions. */
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#ifdef CORE_MAGIC64
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static int
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do_sections64 (bfd *abfd, struct coreout *coreout)
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{
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struct vmap64 vmap;
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char *secname;
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int i, val;
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for (i = 0; i < coreout->c_nvmap; i++)
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{
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val = bfd_bread (&vmap, (bfd_size_type) sizeof vmap, abfd);
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if (val != sizeof vmap)
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break;
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switch (vmap.v_type)
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{
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case VDATA:
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secname = ".data";
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break;
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case VSTACK:
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secname = ".stack";
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break;
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#ifdef VMAPFILE
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case VMAPFILE:
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secname = ".mapfile";
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break;
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#endif
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default:
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continue;
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}
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/* A file offset of zero means that the
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section is not contained in the corefile. */
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if (vmap.v_offset == 0)
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continue;
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if (!make_bfd_asection (abfd, secname,
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SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
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vmap.v_len, vmap.v_vaddr, vmap.v_offset))
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/* Fail. */
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return 0;
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}
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return 1;
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}
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#endif
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/* 32-bit version. */
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static int
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do_sections (bfd *abfd, struct coreout *coreout)
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{
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struct vmap vmap;
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char *secname;
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int i, val;
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for (i = 0; i < coreout->c_nvmap; i++)
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{
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val = bfd_bread (&vmap, (bfd_size_type) sizeof vmap, abfd);
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if (val != sizeof vmap)
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break;
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switch (vmap.v_type)
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{
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case VDATA:
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secname = ".data";
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break;
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case VSTACK:
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secname = ".stack";
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break;
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#ifdef VMAPFILE
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case VMAPFILE:
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secname = ".mapfile";
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break;
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#endif
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default:
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continue;
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}
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/* A file offset of zero means that the
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section is not contained in the corefile. */
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if (vmap.v_offset == 0)
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continue;
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if (!make_bfd_asection (abfd, secname,
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SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
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vmap.v_len, vmap.v_vaddr, vmap.v_offset))
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/* Fail. */
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return 0;
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}
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return 1;
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}
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static asection *
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make_bfd_asection (bfd *abfd,
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const char *name,
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flagword flags,
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bfd_size_type size,
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bfd_vma vma,
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file_ptr filepos)
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{
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asection *asect;
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asect = bfd_make_section_anyway_with_flags (abfd, name, flags);
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if (!asect)
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return NULL;
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asect->size = size;
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asect->vma = vma;
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asect->filepos = filepos;
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asect->alignment_power = 4;
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return asect;
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}
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static bfd_cleanup
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irix_core_core_file_p (bfd *abfd)
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{
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int val;
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struct coreout coreout;
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struct idesc *idg, *idf, *ids;
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size_t amt;
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val = bfd_bread (&coreout, (bfd_size_type) sizeof coreout, abfd);
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if (val != sizeof coreout)
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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 (coreout.c_version != CORE_VERSION1)
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return 0;
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/* Have we got a corefile? */
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switch (coreout.c_magic)
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{
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case CORE_MAGIC: break;
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#ifdef CORE_MAGIC64
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case CORE_MAGIC64: break;
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#endif
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#ifdef CORE_MAGICN32
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case CORE_MAGICN32: break;
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#endif
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default: return 0; /* Un-identifiable or not corefile. */
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}
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amt = sizeof (struct sgi_core_struct);
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core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, amt);
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if (!core_hdr (abfd))
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return NULL;
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strncpy (core_command (abfd), coreout.c_name, CORE_NAMESIZE);
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core_signal (abfd) = coreout.c_sigcause;
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if (bfd_seek (abfd, coreout.c_vmapoffset, SEEK_SET) != 0)
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goto fail;
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/* Process corefile sections. */
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#ifdef CORE_MAGIC64
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if (coreout.c_magic == (int) CORE_MAGIC64)
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{
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if (! do_sections64 (abfd, & coreout))
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goto fail;
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}
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else
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#endif
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if (! do_sections (abfd, & coreout))
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goto fail;
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/* Make sure that the regs are contiguous within the core file. */
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idg = &coreout.c_idesc[I_GPREGS];
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idf = &coreout.c_idesc[I_FPREGS];
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ids = &coreout.c_idesc[I_SPECREGS];
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if (idg->i_offset + idg->i_len != idf->i_offset
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|| idf->i_offset + idf->i_len != ids->i_offset)
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goto fail; /* Can't deal with non-contig regs */
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if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0)
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goto fail;
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if (!make_bfd_asection (abfd, ".reg",
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SEC_HAS_CONTENTS,
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idg->i_len + idf->i_len + ids->i_len,
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0,
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idg->i_offset))
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goto fail;
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/* OK, we believe you. You're a core file (sure, sure). */
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bfd_default_set_arch_mach (abfd, bfd_arch_mips, 0);
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return _bfd_no_cleanup;
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fail:
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bfd_release (abfd, core_hdr (abfd));
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core_hdr (abfd) = NULL;
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bfd_section_list_clear (abfd);
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return NULL;
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}
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static char *
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irix_core_core_file_failing_command (bfd *abfd)
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{
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return core_command (abfd);
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}
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static int
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irix_core_core_file_failing_signal (bfd *abfd)
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{
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return core_signal (abfd);
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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(void)
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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 ((bfd_vma (*) (const void *)) swap_abort)
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#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
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#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
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#define NO_GET64 ((uint64_t (*) (const void *)) swap_abort)
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#define NO_PUT64 ((void (*) (uint64_t, void *)) swap_abort)
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#define NO_GETS64 ((int64_t (*) (const void *)) swap_abort)
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const bfd_target core_irix_vec =
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{
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"irix-core",
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bfd_target_unknown_flavour,
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BFD_ENDIAN_BIG, /* target byte order */
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BFD_ENDIAN_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 | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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0, /* symbol prefix */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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0, /* match_priority */
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TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
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NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */
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NO_GET, NO_GETS, NO_PUT, /* 32 bit data */
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NO_GET, NO_GETS, NO_PUT, /* 16 bit data */
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NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */
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NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */
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NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */
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{ /* bfd_check_format */
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_bfd_dummy_target, /* unknown format */
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_bfd_dummy_target, /* object file */
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_bfd_dummy_target, /* archive */
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irix_core_core_file_p /* a core file */
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},
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{ /* bfd_set_format */
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error
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},
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{ /* bfd_write_contents */
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error
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},
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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 (irix_core),
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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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NULL,
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NULL /* backend_data */
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};
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#endif /* IRIX_CORE */
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