1 files changed, 333 insertions, 0 deletions

diff --git a/bfd/irix-core.c b/bfd/irix-core.c
new file mode 100644
index 0000000..9dcc465
--- /dev/null
+++ b/bfd/irix-core.c
@@ -0,0 +1,333 @@
+/* BFD back-end for Irix core files.
+   Copyright (C) 1993-2014 Free Software Foundation, Inc.
+   Written by Stu Grossman, Cygnus Support.
+   Converted to back-end form by Ian Lance Taylor, Cygnus Support
+
+   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 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.
+
+   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.  */
+
+
+/* This file can only be compiled on systems which use Irix style core
+   files (namely, Irix 4 and Irix 5, so far).  */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+
+#ifdef IRIX_CORE
+
+#include <core.out.h>
+
+struct sgi_core_struct
+{
+  int sig;
+  char cmd[CORE_NAMESIZE];
+};
+
+#define core_hdr(bfd) ((bfd)->tdata.sgi_core_data)
+#define core_signal(bfd) (core_hdr(bfd)->sig)
+#define core_command(bfd) (core_hdr(bfd)->cmd)
+
+#define irix_core_core_file_matches_executable_p generic_core_file_matches_executable_p
+#define irix_core_core_file_pid _bfd_nocore_core_file_pid
+
+static asection *make_bfd_asection
+  (bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr);
+
+/* Helper function for irix_core_core_file_p:
+   32-bit and 64-bit versions.  */
+
+#ifdef CORE_MAGIC64
+static int
+do_sections64 (bfd *abfd, struct coreout *coreout)
+{
+  struct vmap64 vmap;
+  char *secname;
+  int i, val;
+
+  for (i = 0; i < coreout->c_nvmap; i++)
+    {
+      val = bfd_bread (&vmap, (bfd_size_type) sizeof vmap, abfd);
+      if (val != sizeof vmap)
+	break;
+
+      switch (vmap.v_type)
+	{
+	case VDATA:
+	  secname = ".data";
+	  break;
+	case VSTACK:
+	  secname = ".stack";
+	  break;
+#ifdef VMAPFILE
+	case VMAPFILE:
+	  secname = ".mapfile";
+	  break;
+#endif
+	default:
+	  continue;
+	}
+
+      /* A file offset of zero means that the
+	 section is not contained in the corefile.  */
+      if (vmap.v_offset == 0)
+	continue;
+
+      if (!make_bfd_asection (abfd, secname,
+			      SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
+			      vmap.v_len, vmap.v_vaddr, vmap.v_offset))
+	/* Fail.  */
+	return 0;
+    }
+
+  return 1;
+}
+#endif
+
+/* 32-bit version.  */
+
+static int
+do_sections (bfd *abfd, struct coreout *coreout)
+{
+  struct vmap vmap;
+  char *secname;
+  int i, val;
+
+  for (i = 0; i < coreout->c_nvmap; i++)
+    {
+      val = bfd_bread (&vmap, (bfd_size_type) sizeof vmap, abfd);
+      if (val != sizeof vmap)
+	break;
+
+      switch (vmap.v_type)
+	{
+	case VDATA:
+	  secname = ".data";
+	  break;
+	case VSTACK:
+	  secname = ".stack";
+	  break;
+#ifdef VMAPFILE
+	case VMAPFILE:
+	  secname = ".mapfile";
+	  break;
+#endif
+	default:
+	  continue;
+	}
+
+      /* A file offset of zero means that the
+	 section is not contained in the corefile.  */
+      if (vmap.v_offset == 0)
+	continue;
+
+      if (!make_bfd_asection (abfd, secname,
+			      SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
+			      vmap.v_len, vmap.v_vaddr, vmap.v_offset))
+	/* Fail.  */
+	return 0;
+    }
+  return 1;
+}
+
+static asection *
+make_bfd_asection (bfd *abfd,
+                   const char *name,
+                   flagword flags,
+                   bfd_size_type size,
+                   bfd_vma vma,
+                   file_ptr filepos)
+{
+  asection *asect;
+
+  asect = bfd_make_section_anyway_with_flags (abfd, name, flags);
+  if (!asect)
+    return NULL;
+
+  asect->size = size;
+  asect->vma = vma;
+  asect->filepos = filepos;
+  asect->alignment_power = 4;
+
+  return asect;
+}
+
+static const bfd_target *
+irix_core_core_file_p (bfd *abfd)
+{
+  int val;
+  struct coreout coreout;
+  struct idesc *idg, *idf, *ids;
+  bfd_size_type amt;
+
+  val = bfd_bread (&coreout, (bfd_size_type) sizeof coreout, abfd);
+  if (val != sizeof coreout)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return 0;
+    }
+
+  if (coreout.c_version != CORE_VERSION1)
+    return 0;
+
+  /* Have we got a corefile?  */
+  switch (coreout.c_magic)
+    {
+    case CORE_MAGIC:	break;
+#ifdef CORE_MAGIC64
+    case CORE_MAGIC64:	break;
+#endif
+#ifdef CORE_MAGICN32
+    case CORE_MAGICN32:	break;
+#endif
+    default:		return 0;	/* Un-identifiable or not corefile.  */
+    }
+
+  amt = sizeof (struct sgi_core_struct);
+  core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, amt);
+  if (!core_hdr (abfd))
+    return NULL;
+
+  strncpy (core_command (abfd), coreout.c_name, CORE_NAMESIZE);
+  core_signal (abfd) = coreout.c_sigcause;
+
+  if (bfd_seek (abfd, coreout.c_vmapoffset, SEEK_SET) != 0)
+    goto fail;
+
+  /* Process corefile sections.  */
+#ifdef CORE_MAGIC64
+  if (coreout.c_magic == (int) CORE_MAGIC64)
+    {
+      if (! do_sections64 (abfd, & coreout))
+	goto fail;
+    }
+  else
+#endif
+    if (! do_sections (abfd, & coreout))
+      goto fail;
+
+  /* Make sure that the regs are contiguous within the core file.  */
+
+  idg = &coreout.c_idesc[I_GPREGS];
+  idf = &coreout.c_idesc[I_FPREGS];
+  ids = &coreout.c_idesc[I_SPECREGS];
+
+  if (idg->i_offset + idg->i_len != idf->i_offset
+      || idf->i_offset + idf->i_len != ids->i_offset)
+    goto fail;			/* Can't deal with non-contig regs */
+
+  if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0)
+    goto fail;
+
+  if (!make_bfd_asection (abfd, ".reg",
+			  SEC_HAS_CONTENTS,
+			  idg->i_len + idf->i_len + ids->i_len,
+			  0,
+			  idg->i_offset))
+    goto fail;
+
+  /* OK, we believe you.  You're a core file (sure, sure).  */
+  bfd_default_set_arch_mach (abfd, bfd_arch_mips, 0);
+
+  return abfd->xvec;
+
+ fail:
+  bfd_release (abfd, core_hdr (abfd));
+  core_hdr (abfd) = NULL;
+  bfd_section_list_clear (abfd);
+  return NULL;
+}
+
+static char *
+irix_core_core_file_failing_command (bfd *abfd)
+{
+  return core_command (abfd);
+}
+
+static int
+irix_core_core_file_failing_signal (bfd *abfd)
+{
+  return core_signal (abfd);
+}
+
+/* If somebody calls any byte-swapping routines, shoot them.  */
+static void
+swap_abort(void)
+{
+  abort(); /* This way doesn't require any declaration for ANSI to fuck up */
+}
+
+#define	NO_GET ((bfd_vma (*) (const void *)) swap_abort)
+#define	NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
+#define	NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
+#define	NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
+#define	NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
+#define	NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
+
+const bfd_target core_irix_vec =
+  {
+    "irix-core",
+    bfd_target_unknown_flavour,
+    BFD_ENDIAN_BIG,		/* target byte order */
+    BFD_ENDIAN_BIG,		/* target headers byte order */
+    (HAS_RELOC | EXEC_P |	/* object flags */
+     HAS_LINENO | HAS_DEBUG |
+     HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
+    (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+    0,			                                   /* symbol prefix */
+    ' ',						   /* ar_pad_char */
+    16,							   /* ar_max_namelen */
+    0,							   /* match_priority */
+    NO_GET64, NO_GETS64, NO_PUT64,	/* 64 bit data */
+    NO_GET, NO_GETS, NO_PUT,		/* 32 bit data */
+    NO_GET, NO_GETS, NO_PUT,		/* 16 bit data */
+    NO_GET64, NO_GETS64, NO_PUT64,	/* 64 bit hdrs */
+    NO_GET, NO_GETS, NO_PUT,		/* 32 bit hdrs */
+    NO_GET, NO_GETS, NO_PUT,		/* 16 bit hdrs */
+
+    {				/* bfd_check_format */
+      _bfd_dummy_target,		/* unknown format */
+      _bfd_dummy_target,		/* object file */
+      _bfd_dummy_target,		/* archive */
+      irix_core_core_file_p		/* a core file */
+    },
+    {				/* bfd_set_format */
+      bfd_false, bfd_false,
+      bfd_false, bfd_false
+    },
+    {				/* bfd_write_contents */
+      bfd_false, bfd_false,
+      bfd_false, bfd_false
+    },
+
+    BFD_JUMP_TABLE_GENERIC (_bfd_generic),
+    BFD_JUMP_TABLE_COPY (_bfd_generic),
+    BFD_JUMP_TABLE_CORE (irix_core),
+    BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
+    BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
+    BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
+    BFD_JUMP_TABLE_WRITE (_bfd_generic),
+    BFD_JUMP_TABLE_LINK (_bfd_nolink),
+    BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+    NULL,
+
+    NULL			/* backend_data */
+  };
+
+#endif /* IRIX_CORE */