+/* BFD back-end for CISCO crash dumps.
+
+Copyright 1994 Free Software Foundation, Inc.
+
+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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+/* core_file_failing_signal returns a host signal (this probably should
+ be fixed). */
+#include <signal.h>
+\f
+#define CRASH_INFO (0xffc)
+#define CRASH_MAGIC 0xdead1234
+
+typedef enum {
+ CRASH_REASON_NOTCRASHED = 0,
+ CRASH_REASON_EXCEPTION = 1,
+ CRASH_REASON_CORRUPT = 2,
+ } crashreason;
+
+struct crashinfo_external
+{
+ char magic[4]; /* Magic number */
+ char version[4]; /* Version number */
+ char reason[4]; /* Crash reason */
+ char cpu_vector[4]; /* CPU vector for exceptions */
+ char registers[4]; /* Pointer to saved registers */
+ char rambase[4]; /* Base of RAM (not in V1 crash info) */
+};
+\f
+struct cisco_core_struct
+{
+ int sig;
+};
+\f
+static bfd_target *
+cisco_core_file_p (abfd)
+ bfd *abfd;
+{
+ char buf[4];
+ unsigned int crashinfo_offset;
+ struct crashinfo_external crashinfo;
+ int nread;
+ unsigned int rambase;
+ sec_ptr asect;
+ struct stat statbuf;
+
+ if (bfd_seek (abfd, CRASH_INFO, SEEK_SET) != 0)
+ return NULL;
+
+ nread = bfd_read (buf, 1, 4, abfd);
+ if (nread != 4)
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+ crashinfo_offset = bfd_get_32 (abfd, buf);
+
+ if (bfd_seek (abfd, crashinfo_offset, SEEK_SET) != 0)
+ return NULL;
+
+ nread = bfd_read (&crashinfo, 1, sizeof (crashinfo), abfd);
+ if (nread != sizeof (crashinfo))
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ if (bfd_stat (abfd, &statbuf) < 0)
+ {
+ bfd_set_error (bfd_error_system_call);
+ return NULL;
+ }
+
+ if (bfd_get_32 (abfd, crashinfo.magic) != CRASH_MAGIC)
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ switch (bfd_get_32 (abfd, crashinfo.version))
+ {
+ case 0:
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ case 1:
+ rambase = 0;
+ break;
+ default:
+ case 2:
+ rambase = bfd_get_32 (abfd, crashinfo.rambase);
+ break;
+ }
+
+ /* OK, we believe you. You're a core file. */
+
+ abfd->tdata.cisco_core_data =
+ ((struct cisco_core_struct *)
+ bfd_zmalloc (sizeof (struct cisco_core_struct)));
+ if (abfd->tdata.cisco_core_data == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ switch ((crashreason) bfd_get_32 (abfd, crashinfo.reason))
+ {
+ case CRASH_REASON_NOTCRASHED:
+ /* Crash file probably came from write core. */
+ abfd->tdata.cisco_core_data->sig = 0;
+ break;
+ case CRASH_REASON_CORRUPT:
+ /* The crash context area was corrupt -- proceed with caution.
+ We have no way of passing this information back to the caller. */
+ abfd->tdata.cisco_core_data->sig = 0;
+ break;
+ case CRASH_REASON_EXCEPTION:
+ /* Crash occured due to CPU exception. */
+
+ /* This is 68k-specific; for MIPS we'll need to interpret
+ cpu_vector differently based on the target configuration
+ (since CISCO core files don't seem to have the processor
+ encoded in them). */
+
+ switch (bfd_get_32 (abfd, crashinfo.cpu_vector))
+ {
+ /* bus error */
+ case 2 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
+ /* address error */
+ case 3 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
+ /* illegal instruction */
+ case 4 : abfd->tdata.cisco_core_data->sig = SIGILL; break;
+ /* zero divide */
+ case 5 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* chk instruction */
+ case 6 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* trapv instruction */
+ case 7 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* privilege violation */
+ case 8 : abfd->tdata.cisco_core_data->sig = SIGSEGV; break;
+ /* trace trap */
+ case 9 : abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
+ /* line 1010 emulator */
+ case 10: abfd->tdata.cisco_core_data->sig = SIGILL; break;
+ /* line 1111 emulator */
+ case 11: abfd->tdata.cisco_core_data->sig = SIGILL; break;
+
+ /* Coprocessor protocol violation. Using a standard MMU or FPU
+ this cannot be triggered by software. Call it a SIGBUS. */
+ case 13: abfd->tdata.cisco_core_data->sig = SIGBUS; break;
+
+ /* interrupt */
+ case 31: abfd->tdata.cisco_core_data->sig = SIGINT; break;
+ /* breakpoint */
+ case 33: abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
+
+ /* floating point err */
+ case 48: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* floating point err */
+ case 49: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* zero divide */
+ case 50: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* underflow */
+ case 51: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* operand error */
+ case 52: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* overflow */
+ case 53: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ /* NAN */
+ case 54: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
+ default:
+ /* "software generated"*/
+ abfd->tdata.cisco_core_data->sig = SIGEMT;
+ }
+ break;
+ default:
+ /* Unknown crash reason. */
+ abfd->tdata.cisco_core_data->sig = 0;
+ break;
+ }
+
+ abfd->sections = NULL;
+ abfd->section_count = 0;
+
+ asect = (asection *) bfd_zmalloc (sizeof (asection));
+ if (asect == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ asect->name = ".reg";
+ asect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
+ /* This can be bigger than the real size. Set it to the size of the whole
+ core file. */
+ asect->_raw_size = statbuf.st_size;
+ asect->vma = 0;
+ asect->filepos = bfd_get_32 (abfd, crashinfo.registers) - rambase;
+ asect->next = abfd->sections;
+ abfd->sections = asect;
+ ++abfd->section_count;
+
+ /* There is only one section containing data from the target system's RAM.
+ We call it .data. */
+ asect = (asection *) bfd_zmalloc (sizeof (asection));
+ if (asect == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ asect->name = ".data";
+ asect->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
+ /* The size of memory is the size of the core file itself. */
+ asect->_raw_size = statbuf.st_size;
+ asect->vma = rambase;
+ asect->filepos = 0;
+ asect->next = abfd->sections;
+ abfd->sections = asect;
+ ++abfd->section_count;
+
+ return abfd->xvec;
+
+ error_return:
+ {
+ sec_ptr nextsect;
+ for (asect = abfd->sections; asect != NULL;)
+ {
+ nextsect = asect->next;
+ free (asect);
+ asect = nextsect;
+ }
+ free (abfd->tdata.cisco_core_data);
+ return NULL;
+ }
+}
+
+char *
+cisco_core_file_failing_command (abfd)
+ bfd *abfd;
+{
+ return NULL;
+}
+
+int
+cisco_core_file_failing_signal (abfd)
+ bfd *abfd;
+{
+ return abfd->tdata.cisco_core_data->sig;
+}
+
+boolean
+cisco_core_file_matches_executable_p (core_bfd, exec_bfd)
+ bfd *core_bfd;
+ bfd *exec_bfd;
+{
+ return true;
+}
+\f
+/* No archive file support via this BFD */
+#define cisco_openr_next_archived_file bfd_generic_openr_next_archived_file
+#define cisco_generic_stat_arch_elt bfd_generic_stat_arch_elt
+#define cisco_slurp_armap bfd_false
+#define cisco_slurp_extended_name_table bfd_true
+#define cisco_write_armap (boolean (*) PARAMS \
+ ((bfd *arch, unsigned int elength, struct orl *map, \
+ unsigned int orl_count, int stridx))) bfd_false
+#define cisco_truncate_arname bfd_dont_truncate_arname
+#define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
+
+#define cisco_close_and_cleanup bfd_generic_close_and_cleanup
+#define cisco_set_section_contents (boolean (*) PARAMS \
+ ((bfd *abfd, asection *section, PTR data, file_ptr offset, \
+ bfd_size_type count))) bfd_generic_set_section_contents
+#define cisco_get_section_contents bfd_generic_get_section_contents
+#define cisco_new_section_hook (boolean (*) PARAMS \
+ ((bfd *, sec_ptr))) bfd_true
+#define cisco_get_symtab_upper_bound bfd_0l
+#define cisco_get_symtab (long (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry **))) bfd_0l
+#define cisco_get_reloc_upper_bound (long (*) PARAMS \
+ ((bfd *, sec_ptr))) bfd_0l
+#define cisco_canonicalize_reloc (long (*) PARAMS \
+ ((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0l
+#define cisco_make_empty_symbol (struct symbol_cache_entry * \
+ (*) PARAMS ((bfd *))) bfd_false
+#define cisco_print_symbol (void (*) PARAMS \
+ ((bfd *, PTR, struct symbol_cache_entry *, \
+ bfd_print_symbol_type))) bfd_false
+#define cisco_get_symbol_info (void (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry *, \
+ symbol_info *))) bfd_false
+#define cisco_get_lineno (alent * (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
+#define cisco_set_arch_mach (boolean (*) PARAMS \
+ ((bfd *, enum bfd_architecture, unsigned long))) bfd_false
+#define cisco_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 cisco_sizeof_headers (int (*) PARAMS \
+ ((bfd *, boolean))) bfd_0
+
+#define cisco_bfd_debug_info_start bfd_void
+#define cisco_bfd_debug_info_end bfd_void
+#define cisco_bfd_debug_info_accumulate (void (*) PARAMS \
+ ((bfd *, struct sec *))) bfd_void
+#define cisco_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
+#define cisco_bfd_relax_section bfd_generic_relax_section
+#define cisco_bfd_reloc_type_lookup \
+ ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
+#define cisco_bfd_make_debug_symbol \
+ ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
+#define cisco_bfd_link_hash_table_create \
+ ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
+#define cisco_bfd_link_add_symbols \
+ ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
+#define cisco_bfd_final_link \
+ ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
+#define cisco_bfd_copy_private_section_data \
+ ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_false)
+#define cisco_bfd_copy_private_bfd_data \
+ ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_false)
+#define cisco_bfd_is_local_label \
+ ((boolean (*) PARAMS ((bfd *, asymbol *))) bfd_false)
+#define cisco_bfd_free_cached_info bfd_true
+
+bfd_target cisco_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 */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
+
+ { /* bfd_check_format */
+ _bfd_dummy_target, /* unknown format */
+ _bfd_dummy_target, /* object file */
+ _bfd_dummy_target, /* archive */
+ cisco_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(cisco),
+ (PTR) 0 /* backend_data */
+};
projects / deliverable / binutils-gdb.git / blobdiff