/* BFD back end for traditional Unix core files (U-area and raw sections)
- Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright 1988, 1989, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
Written by John Gilmore of Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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. */
-
-/* This file does not define a particular back-end, but it defines routines
- that can be used by other back-ends. */
-
-#include <sysdep.h>
-
-/* No core file support yet on any iris, so dump all this code.
- We don't appear to grok foreign core files on any system, since u
- will have different sizes on different machines anyway. */
-#if (HOST_SYS != IRIX3_SYS) && (HOST_SYS != IRIX4_SYS)
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
-#include <stdio.h>
+#include "sysdep.h"
#include "libbfd.h"
-
#include "libaout.h" /* BFD a.out internal data structures */
+#include <stdio.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <signal.h>
-#include <machine/reg.h>
#include <sys/user.h> /* After a.out.h */
-#include <sys/file.h>
-
-#include <errno.h>
-
-/* need this cast b/c ptr is really void * */
-#define core_hdr(bfd) (((struct core_data *) (bfd->tdata))->hdr)
-#define core_datasec(bfd) (((struct core_data *) ((bfd)->tdata))->data_section)
-#define core_stacksec(bfd) (((struct core_data*)((bfd)->tdata))->stack_section)
-#define core_regsec(bfd) (((struct core_data *) ((bfd)->tdata))->reg_section)
-#define core_upage(bfd) (((struct core_data *) ((bfd)->tdata))->upage)
-
-/* These are stored in the bfd's tdata */
-struct core_data {
- struct user *upage; /* core file header */
- asection *data_section;
- asection *stack_section;
- asection *reg_section;
-};
+
+#ifdef TRAD_HEADER
+#include TRAD_HEADER
+#endif
+
+ struct trad_core_struct
+ {
+ asection *data_section;
+ asection *stack_section;
+ asection *reg_section;
+ struct user u;
+ } *rawptr;
+
+#define core_upage(bfd) (&((bfd)->tdata.trad_core_data->u))
+#define core_datasec(bfd) ((bfd)->tdata.trad_core_data->data_section)
+#define core_stacksec(bfd) ((bfd)->tdata.trad_core_data->stack_section)
+#define core_regsec(bfd) ((bfd)->tdata.trad_core_data->reg_section)
+
+/* forward declarations */
+
+const bfd_target *trad_unix_core_file_p PARAMS ((bfd *abfd));
+char * trad_unix_core_file_failing_command PARAMS ((bfd *abfd));
+int trad_unix_core_file_failing_signal PARAMS ((bfd *abfd));
+boolean trad_unix_core_file_matches_executable_p
+ PARAMS ((bfd *core_bfd, bfd *exec_bfd));
+
+/* Handle 4.2-style (and perhaps also sysV-style) core dump file. */
/* ARGSUSED */
-bfd_target *
+const bfd_target *
trad_unix_core_file_p (abfd)
bfd *abfd;
+
{
-#if HOST_SYS == SUN4_SYS
- return 0;
-#else
int val;
- char *rawptr;
struct user u;
- unsigned int reg_offset, fp_reg_offset;
-
- /* 4.2-style (and perhaps also sysV-style) core dump file. */
+#ifdef TRAD_CORE_USER_OFFSET
+ /* If defined, this macro is the file position of the user struct. */
+ if (bfd_seek (abfd, TRAD_CORE_USER_OFFSET, SEEK_SET) != 0)
+ return 0;
+#endif
+
val = bfd_read ((void *)&u, 1, sizeof u, abfd);
if (val != sizeof u)
- return 0; /* Too small to be a core file */
+ {
+ /* Too small to be a core file */
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
/* Sanity check perhaps??? */
if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */
- return 0;
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
if (u.u_ssize > 0x1000000)
- return 0;
- /* Check that the size claimed is no greater than the file size. FIXME. */
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
+
+ /* Check that the size claimed is no greater than the file size. */
+ {
+ FILE *stream = bfd_cache_lookup (abfd);
+ struct stat statbuf;
+ if (stream == NULL)
+ return 0;
+ if (fstat (fileno (stream), &statbuf) < 0)
+ {
+ bfd_set_error (bfd_error_system_call);
+ return 0;
+ }
+ if (NBPG * (UPAGES + u.u_dsize
+#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
+ - u.u_tsize
+#endif
+ + u.u_ssize) > statbuf.st_size)
+ {
+ bfd_set_error (bfd_error_file_truncated);
+ return 0;
+ }
+#ifndef TRAD_CORE_ALLOW_ANY_EXTRA_SIZE
+ if (NBPG * (UPAGES + u.u_dsize + u.u_ssize)
+#ifdef TRAD_CORE_EXTRA_SIZE_ALLOWED
+ /* Some systems write the file too big. */
+ + TRAD_CORE_EXTRA_SIZE_ALLOWED
+#endif
+ < statbuf.st_size)
+ {
+ /* The file is too big. Maybe it's not a core file
+ or we otherwise have bad values for u_dsize and u_ssize). */
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
+#endif
+ }
/* OK, we believe you. You're a core file (sure, sure). */
/* Allocate both the upage and the struct core_data at once, so
a single free() will free them both. */
- rawptr = (char *)zalloc (sizeof (u) + sizeof (struct core_data));
+ rawptr = (struct trad_core_struct *)
+ bfd_zmalloc (sizeof (struct trad_core_struct));
if (rawptr == NULL) {
- bfd_error = no_memory;
+ bfd_set_error (bfd_error_no_memory);
return 0;
}
- set_tdata (abfd, (struct core_data *)rawptr);
- core_upage (abfd) = (struct user *)(rawptr + sizeof (struct core_data));
- *core_upage (abfd) = u; /* Save that upage! */
+ abfd->tdata.trad_core_data = rawptr;
+
+ rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */
- /* create the sections. This is raunchy, but bfd_close wants to reclaim
- them */
- core_stacksec (abfd) = (asection *) zalloc (sizeof (asection));
+ /* Create the sections. This is raunchy, but bfd_close wants to free
+ them separately. */
+
+ core_stacksec(abfd) = (asection *) bfd_zmalloc (sizeof (asection));
if (core_stacksec (abfd) == NULL) {
-loser:
- bfd_error = no_memory;
+ loser:
+ bfd_set_error (bfd_error_no_memory);
free ((void *)rawptr);
return 0;
}
- core_datasec (abfd) = (asection *) zalloc (sizeof (asection));
+ core_datasec (abfd) = (asection *) bfd_zmalloc (sizeof (asection));
if (core_datasec (abfd) == NULL) {
-loser1:
+ loser1:
free ((void *)core_stacksec (abfd));
goto loser;
}
- core_regsec (abfd) = (asection *) zalloc (sizeof (asection));
+ core_regsec (abfd) = (asection *) bfd_zmalloc (sizeof (asection));
if (core_regsec (abfd) == NULL) {
-loser2:
free ((void *)core_datasec (abfd));
goto loser1;
}
core_datasec (abfd)->name = ".data";
core_regsec (abfd)->name = ".reg";
- core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_regsec (abfd)->flags = SEC_ALLOC;
+ core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
+ core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
+ core_regsec (abfd)->flags = SEC_HAS_CONTENTS;
- core_datasec (abfd)->size = NBPG * u.u_dsize;
- core_stacksec (abfd)->size = NBPG * u.u_ssize;
- core_regsec (abfd)->size = NBPG * UPAGES; /* Larger than sizeof struct u */
+ core_datasec (abfd)->_raw_size = NBPG * u.u_dsize
+#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
+ - NBPG * u.u_tsize
+#endif
+ ;
+ core_stacksec (abfd)->_raw_size = NBPG * u.u_ssize;
+ core_regsec (abfd)->_raw_size = NBPG * UPAGES; /* Larger than sizeof struct u */
/* What a hack... we'd like to steal it from the exec file,
since the upage does not seem to provide it. FIXME. */
#else
core_datasec (abfd)->vma = HOST_TEXT_START_ADDR + (NBPG * u.u_tsize);
#endif
+
+#ifdef HOST_STACK_START_ADDR
+ core_stacksec (abfd)->vma = HOST_STACK_START_ADDR;
+#else
core_stacksec (abfd)->vma = HOST_STACK_END_ADDR - (NBPG * u.u_ssize);
- core_regsec (abfd)->vma = -1;
+#endif
+
+ /* This is tricky. As the "register section", we give them the entire
+ upage and stack. u.u_ar0 points to where "register 0" is stored.
+ There are two tricks with this, though. One is that the rest of the
+ registers might be at positive or negative (or both) displacements
+ from *u_ar0. The other is that u_ar0 is sometimes an absolute address
+ in kernel memory, and on other systems it is an offset from the beginning
+ of the `struct user'.
+
+ As a practical matter, we don't know where the registers actually are,
+ so we have to pass the whole area to GDB. We encode the value of u_ar0
+ by setting the .regs section up so that its virtual memory address
+ 0 is at the place pointed to by u_ar0 (by setting the vma of the start
+ of the section to -u_ar0). GDB uses this info to locate the regs,
+ using minor trickery to get around the offset-or-absolute-addr problem. */
+ core_regsec (abfd)->vma = 0 - (int) u.u_ar0;
core_datasec (abfd)->filepos = NBPG * UPAGES;
- core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize;
- core_regsec (abfd)->filepos = 0; /* Register segment is the upage */
+ core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize
+#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
+ - NBPG * u.u_tsize
+#endif
+ ;
+ core_regsec (abfd)->filepos = 0; /* Register segment is the upage */
/* Align to word at least */
core_stacksec (abfd)->alignment_power = 2;
abfd->section_count = 3;
return abfd->xvec;
-#endif
}
char *
trad_unix_core_file_failing_command (abfd)
bfd *abfd;
{
- if (*core_upage (abfd)->u_comm)
- return core_upage (abfd)->u_comm;
+#ifndef NO_CORE_COMMAND
+ char *com = abfd->tdata.trad_core_data->u.u_comm;
+ if (*com)
+ return com;
else
+#endif
return 0;
}
trad_unix_core_file_failing_signal (ignore_abfd)
bfd *ignore_abfd;
{
+#ifdef TRAD_UNIX_CORE_FILE_FAILING_SIGNAL
+ return TRAD_UNIX_CORE_FILE_FAILING_SIGNAL(ignore_abfd);
+#else
return -1; /* FIXME, where is it? */
+#endif
}
/* ARGSUSED */
{
return true; /* FIXME, We have no way of telling at this point */
}
-
-#endif /* (HOST_SYS != IRIX3_SYS) && (HOST_SYS != IRIX4_SYS) */
+\f
+/* 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 ((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 trad_core_vec =
+ {
+ "trad-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 | D_PAGED),
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ 0, /* symbol prefix */
+ ' ', /* ar_pad_char */
+ 16, /* ar_max_namelen */
+ 3, /* minimum alignment power */
+ 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 */
+ trad_unix_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 (trad_unix),
+ 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),
+
+ (PTR) 0 /* backend_data */
+};
projects / binutils.git / blobdiff