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[/] [or1k/] [branches/] [oc/] [gdb-5.0/] [bfd/] [ptrace-core.c] - Rev 1771
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/* BFD backend for core files which use the ptrace_user structure Copyright 1993, 94, 95, 96, 1998 Free Software Foundation, Inc. The structure of this file is based on trad-core.c written by John Gilmore of Cygnus Support. Modified to work with the ptrace_user structure by Kevin A. Buettner. (Longterm it may be better to merge this file with trad-core.c) 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef PTRACE_CORE #include "bfd.h" #include "sysdep.h" #include "libbfd.h" #include <sys/param.h> #include <sys/dir.h> #include <signal.h> #include <sys/ptrace.h> struct trad_core_struct { asection *data_section; asection *stack_section; asection *reg_section; struct ptrace_user u; }; #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 *ptrace_unix_core_file_p PARAMS ((bfd *abfd)); char * ptrace_unix_core_file_failing_command PARAMS ((bfd *abfd)); int ptrace_unix_core_file_failing_signal PARAMS ((bfd *abfd)); boolean ptrace_unix_core_file_matches_executable_p PARAMS ((bfd *core_bfd, bfd *exec_bfd)); static void swap_abort PARAMS ((void)); /* ARGSUSED */ const bfd_target * ptrace_unix_core_file_p (abfd) bfd *abfd; { int val; struct ptrace_user u; struct trad_core_struct *rawptr; val = bfd_read ((void *)&u, 1, sizeof u, abfd); if (val != sizeof u || u.pt_magic != _BCS_PTRACE_MAGIC || u.pt_rev != _BCS_PTRACE_REV) { /* Too small to be a core file */ bfd_set_error (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 = (struct trad_core_struct *) bfd_zalloc (abfd, sizeof (struct trad_core_struct)); if (rawptr == NULL) 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 *) bfd_zalloc (abfd, sizeof (asection)); if (core_stacksec (abfd) == NULL) return NULL; core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection)); if (core_datasec (abfd) == NULL) return NULL; core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection)); if (core_regsec (abfd) == NULL) return NULL; core_stacksec (abfd)->name = ".stack"; core_datasec (abfd)->name = ".data"; core_regsec (abfd)->name = ".reg"; /* FIXME: Need to worry about shared memory, library data, and library text. I don't think that any of these things are supported on the system on which I am developing this for though. */ 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)->_raw_size = u.pt_dsize; core_stacksec (abfd)->_raw_size = u.pt_ssize; core_regsec (abfd)->_raw_size = sizeof(u); core_datasec (abfd)->vma = u.pt_o_data_start; core_stacksec (abfd)->vma = USRSTACK - u.pt_ssize; core_regsec (abfd)->vma = 0 - sizeof(u); /* see trad-core.c */ core_datasec (abfd)->filepos = (int) u.pt_dataptr; core_stacksec (abfd)->filepos = (int) (u.pt_dataptr + u.pt_dsize); core_regsec (abfd)->filepos = 0; /* Register segment is ptrace_user */ /* 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 * ptrace_unix_core_file_failing_command (abfd) bfd *abfd; { char *com = abfd->tdata.trad_core_data->u.pt_comm; if (*com) return com; else return 0; } /* ARGSUSED */ int ptrace_unix_core_file_failing_signal (abfd) bfd *abfd; { return abfd->tdata.trad_core_data->u.pt_sigframe.sig_num; } /* ARGSUSED */ boolean ptrace_unix_core_file_matches_executable_p (core_bfd, exec_bfd) bfd *core_bfd, *exec_bfd; { /* FIXME: Use pt_timdat field of the ptrace_user structure to match the date of the executable */ return true; } /* If somebody calls any byte-swapping routines, shoot them. */ static 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 ptrace_core_vec = { "trad-core", bfd_target_unknown_flavour, BFD_ENDIAN_UNKNOWN, /* target byte order */ BFD_ENDIAN_UNKNOWN, /* 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 */ 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 */ ptrace_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 (ptrace_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), NULL, (PTR) 0 /* backend_data */ }; #endif /* PTRACE_CORE */
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