/* 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 Free Software Foundation, Inc.
Written by John Gilmore of Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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. */
+/* To use this file on a particular host, configure the host with these
+ parameters in the config/h-HOST file:
-#include <sysdep.h>
+ HDEFINES=-DTRAD_CORE
+ HDEPFILES=trad-core.o
-/* 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)
+ */
#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 */
+#if 0
+/* file.h is included by std-host.h. So we better not try to include it
+ twice; on some systems (dpx2) it is not protected against multiple
+ inclusion. I have checked that all the hosts which use this file
+ include sys/file.h in the hosts file. */
#include <sys/file.h>
+#endif
#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;
-};
+ 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 */
+
+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 *
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. */
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_error = wrong_format;
+ return 0;
+ }
/* Sanity check perhaps??? */
if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */
- return 0;
+ {
+ 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_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_error = system_call_error;
+ return 0;
+ }
+ if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size)
+ {
+ bfd_error = file_truncated;
+ return 0;
+ }
+ 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_error = wrong_format;
+ return 0;
+ }
+ }
/* 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_zalloc (abfd, sizeof (struct trad_core_struct));
if (rawptr == NULL) {
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 *) zalloc (sizeof (asection));
if (core_stacksec (abfd) == NULL) {
-loser:
+ loser:
bfd_error = no_memory;
free ((void *)rawptr);
return 0;
}
core_datasec (abfd) = (asection *) zalloc (sizeof (asection));
if (core_datasec (abfd) == NULL) {
-loser1:
+ loser1:
free ((void *)core_stacksec (abfd));
goto loser;
}
core_regsec (abfd) = (asection *) zalloc (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_ALLOC + 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;
+ 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. */
core_datasec (abfd)->vma = HOST_TEXT_START_ADDR + (NBPG * u.u_tsize);
#endif
core_stacksec (abfd)->vma = HOST_STACK_END_ADDR - (NBPG * u.u_ssize);
- core_regsec (abfd)->vma = -1;
+ /* 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_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
+/* No archive file support via this BFD */
+#define trad_unix_openr_next_archived_file bfd_generic_openr_next_archived_file
+#define trad_unix_generic_stat_arch_elt bfd_generic_stat_arch_elt
+#define trad_unix_slurp_armap bfd_false
+#define trad_unix_slurp_extended_name_table bfd_true
+#define trad_unix_write_armap (boolean (*) PARAMS \
+ ((bfd *arch, unsigned int elength, struct orl *map, \
+ unsigned int orl_count, int stridx))) bfd_false
+#define trad_unix_truncate_arname bfd_dont_truncate_arname
+#define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
+
+#define trad_unix_close_and_cleanup bfd_generic_close_and_cleanup
+#define trad_unix_set_section_contents (boolean (*) PARAMS \
+ ((bfd *abfd, asection *section, PTR data, file_ptr offset, \
+ bfd_size_type count))) bfd_false
+#define trad_unix_get_section_contents bfd_generic_get_section_contents
+#define trad_unix_new_section_hook (boolean (*) PARAMS \
+ ((bfd *, sec_ptr))) bfd_true
+#define trad_unix_get_symtab_upper_bound bfd_0u
+#define trad_unix_get_symtab (unsigned int (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry **))) bfd_0u
+#define trad_unix_get_reloc_upper_bound (unsigned int (*) PARAMS \
+ ((bfd *, sec_ptr))) bfd_0u
+#define trad_unix_canonicalize_reloc (unsigned int (*) PARAMS \
+ ((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
+#define trad_unix_make_empty_symbol (struct symbol_cache_entry * \
+ (*) PARAMS ((bfd *))) bfd_false
+#define trad_unix_print_symbol (void (*) PARAMS \
+ ((bfd *, PTR, struct symbol_cache_entry *, \
+ bfd_print_symbol_type))) bfd_false
+#define trad_unix_get_symbol_info (void (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry *, \
+ symbol_info *))) bfd_false
+#define trad_unix_get_lineno (alent * (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
+#define trad_unix_set_arch_mach (boolean (*) PARAMS \
+ ((bfd *, enum bfd_architecture, unsigned long))) bfd_false
+#define trad_unix_find_nearest_line (boolean (*) PARAMS \
+ ((bfd *abfd, struct sec *section, \
+ struct symbol_cache_entry **symbols,bfd_vma offset, \
+ CONST char **file, CONST char **func, unsigned int *line))) bfd_false
+#define trad_unix_sizeof_headers (int (*) PARAMS \
+ ((bfd *, boolean))) bfd_0
+
+#define trad_unix_bfd_debug_info_start bfd_void
+#define trad_unix_bfd_debug_info_end bfd_void
+#define trad_unix_bfd_debug_info_accumulate (void (*) PARAMS \
+ ((bfd *, struct sec *))) bfd_void
+#define trad_unix_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
+#define trad_unix_bfd_relax_section bfd_generic_relax_section
+#define trad_unix_bfd_seclet_link \
+ ((boolean (*) PARAMS ((bfd *, PTR, boolean))) bfd_false)
+#define trad_unix_bfd_reloc_type_lookup \
+ ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
+#define trad_unix_bfd_make_debug_symbol \
+ ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
+
+/* 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 (( bfd_byte *))) swap_abort )
+#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
+#define NO_SIGNED_GET ((bfd_signed_vma (*) PARAMS ((bfd_byte *))) swap_abort )
+
+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 | DYNAMIC | 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
+ },
+
+ JUMP_TABLE(trad_unix),
+ (PTR) 0 /* backend_data */
+};
projects / binutils.git / blobdiff