Initial revision

1 files changed, 276 insertions, 0 deletions

diff --git a/bfd/irix-core.c b/bfd/irix-core.c
new file mode 100644
index 00000000000..964ca20eac5
--- /dev/null
+++ b/bfd/irix-core.c
@@ -0,0 +1,276 @@
+/* BFD back-end for Irix core files.
+   Copyright 1993, 94, 95, 96, 1997 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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* This file can only be compiled on systems which use Irix style core
+   files (namely, Irix 4 and Irix 5, so far).  */
+
+#include "bfd.h"
+#include "sysdep.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)
+
+static asection *make_bfd_asection
+  PARAMS ((bfd *, CONST char *, flagword, bfd_size_type, bfd_vma, file_ptr));
+static const bfd_target *irix_core_core_file_p PARAMS ((bfd *));
+static char *irix_core_core_file_failing_command PARAMS ((bfd *));
+static int irix_core_core_file_failing_signal PARAMS ((bfd *));
+static boolean irix_core_core_file_matches_executable_p 
+  PARAMS ((bfd *, bfd *));
+static asymbol *irix_core_make_empty_symbol PARAMS ((bfd *));
+static void swap_abort PARAMS ((void));
+
+static asection *
+make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
+     bfd *abfd;
+     CONST char *name;
+     flagword flags;
+     bfd_size_type _raw_size;
+     bfd_vma vma;
+     file_ptr filepos;
+{
+  asection *asect;
+
+  asect = bfd_make_section_anyway (abfd, name);
+  if (!asect)
+    return NULL;
+
+  asect->flags = flags;
+  asect->_raw_size = _raw_size;
+  asect->vma = vma;
+  asect->filepos = filepos;
+  asect->alignment_power = 4;
+
+  return asect;
+}
+
+static const bfd_target *
+irix_core_core_file_p (abfd)
+     bfd *abfd;
+{
+  int val;
+  int i;
+  char *secname;
+  struct coreout coreout;
+  struct idesc *idg, *idf, *ids;
+
+  val = bfd_read ((PTR)&coreout, 1, sizeof coreout, abfd);
+  if (val != sizeof coreout)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return 0;
+    }
+
+#ifndef CORE_MAGICN32
+#define CORE_MAGICN32 CORE_MAGIC
+#endif
+  if ((coreout.c_magic != CORE_MAGIC && coreout.c_magic != CORE_MAGICN32)
+      || coreout.c_version != CORE_VERSION1)
+    return 0;
+
+  core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, sizeof (struct sgi_core_struct));
+  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)
+    return NULL;
+
+  for (i = 0; i < coreout.c_nvmap; i++)
+    {
+      struct vmap vmap;
+
+      val = bfd_read ((PTR)&vmap, 1, 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))
+	return NULL;
+    }
+
+  /* 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)
+    return 0;			/* Can't deal with non-contig regs */
+
+  if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0)
+    return NULL;
+
+  make_bfd_asection (abfd, ".reg",
+		     SEC_HAS_CONTENTS,
+		     idg->i_len + idf->i_len + ids->i_len,
+		     0,
+		     idg->i_offset);
+
+  /* OK, we believe you.  You're a core file (sure, sure).  */
+
+  return abfd->xvec;
+}
+
+static char *
+irix_core_core_file_failing_command (abfd)
+     bfd *abfd;
+{
+  return core_command (abfd);
+}
+
+static int
+irix_core_core_file_failing_signal (abfd)
+     bfd *abfd;
+{
+  return core_signal (abfd);
+}
+
+static boolean
+irix_core_core_file_matches_executable_p (core_bfd, exec_bfd)
+     bfd *core_bfd, *exec_bfd;
+{
+  return true;			/* XXX - FIXME */
+}
+
+static asymbol *
+irix_core_make_empty_symbol (abfd)
+     bfd *abfd;
+{
+  asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
+  if (new)
+    new->the_bfd = abfd;
+  return new;
+}
+
+#define irix_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
+#define irix_core_get_symtab _bfd_nosymbols_get_symtab
+#define irix_core_print_symbol _bfd_nosymbols_print_symbol
+#define irix_core_get_symbol_info _bfd_nosymbols_get_symbol_info
+#define irix_core_bfd_is_local_label_name \
+  _bfd_nosymbols_bfd_is_local_label_name
+#define irix_core_get_lineno _bfd_nosymbols_get_lineno
+#define irix_core_find_nearest_line _bfd_nosymbols_find_nearest_line
+#define irix_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
+#define irix_core_read_minisymbols _bfd_nosymbols_read_minisymbols
+#define irix_core_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
+
+/* If somebody calls any byte-swapping routines, shoot them.  */
+static void
+swap_abort()
+{
+  abort(); /* This way doesn't require any declaration for ANSI to fuck up */
+}
+#define	NO_GET	((bfd_vma (*) PARAMS ((   const bfd_byte *))) swap_abort )
+#define	NO_PUT	((void    (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
+#define	NO_SIGNED_GET \
+  ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
+
+const bfd_target irix_core_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 */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 64 bit data */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 32 bit data */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 16 bit data */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 64 bit hdrs */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 32 bit hdrs */
+    NO_GET, NO_SIGNED_GET, 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 (irix_core),
+       BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
+       BFD_JUMP_TABLE_WRITE (_bfd_generic),
+       BFD_JUMP_TABLE_LINK (_bfd_nolink),
+       BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+    (PTR) 0			/* backend_data */
+};
+
+#endif /* IRIX_CORE */