From f3f29240da4a1211185583322f7d0dd7940c814a Mon Sep 17 00:00:00 2001 From: Jim Kingdon Date: Sat, 19 Mar 1994 06:17:08 +0000 Subject: [PATCH] * trad-core.c (trad_unix_core_file_p): Call bfd_zmalloc not bfd_zalloc for rawptr, because later on we may call free, not bfd_release, on it. * bfd.c (struct _bfd): Add cisco_core_struct to tdata union. * libbfd.c (bfd_read, bfd_seek): Add comments regarding errors. * cisco-core.c: New file. * Makfile.in: Change accordingly. * bfd-in2.h: Rebuilt. --- bfd/ChangeLog | 12 ++ bfd/cisco-core.c | 334 +++++++++++++++++++++++++++++++++++++++++++++++ bfd/trad-core.c | 2 +- 3 files changed, 347 insertions(+), 1 deletion(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index e30a927d76b..a0f1c58838d 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,15 @@ +Fri Mar 18 19:12:47 1994 Jim Kingdon (kingdon@lioth.cygnus.com) + + * trad-core.c (trad_unix_core_file_p): Call bfd_zmalloc not + bfd_zalloc for rawptr, because later on we may call free, not + bfd_release, on it. + + * bfd.c (struct _bfd): Add cisco_core_struct to tdata union. + * libbfd.c (bfd_read, bfd_seek): Add comments regarding errors. + * cisco-core.c: New file. + * Makfile.in: Change accordingly. + * bfd-in2.h: Rebuilt. + Fri Mar 18 18:13:49 1994 Jeffrey A. Law (law@snake.cs.utah.edu) * som.h (struct som_exec_data): New structure to hold exec diff --git a/bfd/cisco-core.c b/bfd/cisco-core.c index e69de29bb2d..f49b2d34ebc 100644 --- a/bfd/cisco-core.c +++ b/bfd/cisco-core.c @@ -0,0 +1,334 @@ +/* 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" + +#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) */ +}; + +struct cisco_core_struct +{ + int sig; +}; + +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) + { + /* Maybe the file is too small (FIXME: what about other errors). */ + 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)) + { + /* Maybe the file is too small (FIXME: what about other errors). */ + 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 (abfd, 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. + FIXME: convert cpu_vector to a signal number. */ + abfd->tdata.cisco_core_data->sig = 0; + 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); + 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; +} + +/* 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_0u +#define cisco_get_symtab (unsigned int (*) PARAMS \ + ((bfd *, struct symbol_cache_entry **))) bfd_0u +#define cisco_get_reloc_upper_bound (unsigned int (*) PARAMS \ + ((bfd *, sec_ptr))) bfd_0u +#define cisco_canonicalize_reloc (unsigned int (*) PARAMS \ + ((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u +#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 *, asection *))) bfd_false) + +/* 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 ) + +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 */ + 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 */ +}; diff --git a/bfd/trad-core.c b/bfd/trad-core.c index bf7266b01fc..8d06a92a3f9 100644 --- a/bfd/trad-core.c +++ b/bfd/trad-core.c @@ -147,7 +147,7 @@ trad_unix_core_file_p (abfd) /* Allocate both the upage and the struct core_data at once, so a single free() will free them both. */ rawptr = (struct trad_core_struct *) - bfd_zalloc (abfd, sizeof (struct trad_core_struct)); + bfd_zmalloc (abfd, sizeof (struct trad_core_struct)); if (rawptr == NULL) { bfd_set_error (bfd_error_no_memory); return 0; -- 2.30.2