From 24f2dbbf1ef6c3f48604183cff99113b6ec1af0c Mon Sep 17 00:00:00 2001 From: CSRG Date: Thu, 6 May 1993 06:15:53 -0800 Subject: [PATCH 1/1] BSD 4_4_Lite2 development Work on file usr/src/contrib/gdb-4.7.LBL/bfd/trad-core.c Synthesized-from: CSRG/cd3/4.4BSD-Lite2 --- usr/src/contrib/gdb-4.7.LBL/bfd/trad-core.c | 284 ++++++++++++++++++++ 1 file changed, 284 insertions(+) create mode 100644 usr/src/contrib/gdb-4.7.LBL/bfd/trad-core.c diff --git a/usr/src/contrib/gdb-4.7.LBL/bfd/trad-core.c b/usr/src/contrib/gdb-4.7.LBL/bfd/trad-core.c new file mode 100644 index 0000000000..6ab5f0b095 --- /dev/null +++ b/usr/src/contrib/gdb-4.7.LBL/bfd/trad-core.c @@ -0,0 +1,284 @@ +/* BFD back end for traditional Unix core files (U-area and raw sections) + Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc. + Written by John Gilmore of 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* To use this file on a particular host, configure the host with these + parameters in the config/h-HOST file: + + HDEFINES=-DTRAD_CORE + HDEPFILES=trad-core.o + + */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "libaout.h" /* BFD a.out internal data structures */ + +#include +#include +#include +#include +#include + +#include /* After a.out.h */ +#include + +#include + + 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) + +/* Handle 4.2-style (and perhaps also sysV-style) core dump file. */ + +/* ARGSUSED */ +bfd_target * +trad_unix_core_file_p (abfd) + bfd *abfd; + +{ + int val; + struct user u; + /* This struct is just for allocating two things with one zalloc, so + they will be freed together, without violating alignment constraints. */ + + + val = bfd_read ((void *)&u, 1, sizeof u, abfd); + if (val != sizeof u) + return 0; /* Too small to be a core file */ + + /* Sanity check perhaps??? */ + if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */ + return 0; + if (u.u_ssize > 0x1000000) + return 0; + /* Check that the size claimed is no greater than the file size. FIXME. */ + + /* 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 = (struct trad_core_struct *)bfd_zalloc (abfd, sizeof (struct trad_core_struct)); + if (rawptr == NULL) { + bfd_error = no_memory; + return 0; + } + + 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 free + them separately. */ + + core_stacksec(abfd) = (asection *) zalloc (sizeof (asection)); + if (core_stacksec (abfd) == NULL) { + loser: + bfd_error = no_memory; + free ((void *)rawptr); + return 0; + } + core_datasec (abfd) = (asection *) zalloc (sizeof (asection)); + if (core_datasec (abfd) == NULL) { + loser1: + free ((void *)core_stacksec (abfd)); + goto loser; + } + core_regsec (abfd) = (asection *) zalloc (sizeof (asection)); + if (core_regsec (abfd) == NULL) { + free ((void *)core_datasec (abfd)); + goto loser1; + } + + core_stacksec (abfd)->name = ".stack"; + core_datasec (abfd)->name = ".data"; + core_regsec (abfd)->name = ".reg"; + + 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)->_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. */ +#ifdef HOST_DATA_START_ADDR + core_datasec (abfd)->vma = HOST_DATA_START_ADDR; +#else + 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); + /* 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 */ + + /* Align to word at least */ + core_stacksec (abfd)->alignment_power = 2; + core_datasec (abfd)->alignment_power = 2; + core_regsec (abfd)->alignment_power = 2; + + abfd->sections = core_stacksec (abfd); + core_stacksec (abfd)->next = core_datasec (abfd); + core_datasec (abfd)->next = core_regsec (abfd); + abfd->section_count = 3; + + return abfd->xvec; +} + +char * +trad_unix_core_file_failing_command (abfd) + bfd *abfd; +{ +#if !defined(NO_CORE_COMMAND) && BSD < 199207 + char *com = abfd->tdata.trad_core_data->u.u_comm; + if (*com) + return com; + else +#endif + return 0; +} + +/* ARGSUSED */ +int +trad_unix_core_file_failing_signal (ignore_abfd) + bfd *ignore_abfd; +{ + return -1; /* FIXME, where is it? */ +} + +/* ARGSUSED */ +boolean +trad_unix_core_file_matches_executable_p (core_bfd, exec_bfd) + bfd *core_bfd, *exec_bfd; +{ + return true; /* FIXME, We have no way of telling at this point */ +} + +/* 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 (PROTO (boolean, (*), \ + (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 (PROTO(boolean, (*), \ + (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 (PROTO (boolean, (*), \ + (bfd *, sec_ptr))) bfd_true +#define trad_unix_get_symtab_upper_bound bfd_0u +#define trad_unix_get_symtab (PROTO (unsigned int, (*), \ + (bfd *, struct symbol_cache_entry **))) bfd_0u +#define trad_unix_get_reloc_upper_bound (PROTO (unsigned int, (*), \ + (bfd *, sec_ptr))) bfd_0u +#define trad_unix_canonicalize_reloc (PROTO (unsigned int, (*), \ + (bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u +#define trad_unix_make_empty_symbol (PROTO ( \ + struct symbol_cache_entry *, (*), (bfd *))) bfd_false +#define trad_unix_print_symbol (PROTO (void, (*), \ + (bfd *, PTR, struct symbol_cache_entry *, \ + bfd_print_symbol_type))) bfd_false +#define trad_unix_get_lineno (PROTO (alent *, (*), \ + (bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr +#define trad_unix_set_arch_mach (PROTO (boolean, (*), \ + (bfd *, enum bfd_architecture, unsigned long))) bfd_false +#define trad_unix_find_nearest_line (PROTO (boolean, (*), \ + (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 (PROTO (int, (*), \ + (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 (PROTO (void, (*), \ + (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 +/* 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 ((PROTO(bfd_vma, (*), ( bfd_byte *))) swap_abort ) +#define NO_PUT ((PROTO(void, (*), (bfd_vma, 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 */ + '_', /* symbol prefix */ + ' ', /* ar_pad_char */ + 16, /* ar_max_namelen */ + 3, /* minimum alignment power */ + NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* data */ + NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* hdrs */ + + {_bfd_dummy_target, _bfd_dummy_target, + _bfd_dummy_target, trad_unix_core_file_p}, + {bfd_false, bfd_false, /* bfd_create_object */ + bfd_false, bfd_false}, + {bfd_false, bfd_false, /* bfd_write_contents */ + bfd_false, bfd_false}, + + JUMP_TABLE(trad_unix) +}; -- 2.20.1