1 /* BFD backend for core files which use the ptrace_user structure
2 Copyright 1993, 1994 Free Software Foundation, Inc.
3 The structure of this file is based on trad-core.c written by John Gilmore
5 Modified to work with the ptrace_user structure by Kevin A. Buettner.
6 (Longterm it may be better to merge this file with trad-core.c)
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include <sys/types.h>
32 #include <sys/param.h>
37 #include <sys/ptrace.h>
40 struct trad_core_struct
42 asection *data_section;
43 asection *stack_section;
44 asection *reg_section;
48 #define core_upage(bfd) (&((bfd)->tdata.trad_core_data->u))
49 #define core_datasec(bfd) ((bfd)->tdata.trad_core_data->data_section)
50 #define core_stacksec(bfd) ((bfd)->tdata.trad_core_data->stack_section)
51 #define core_regsec(bfd) ((bfd)->tdata.trad_core_data->reg_section)
53 /* forward declarations */
55 const bfd_target *ptrace_unix_core_file_p PARAMS ((bfd *abfd));
56 char * ptrace_unix_core_file_failing_command PARAMS ((bfd *abfd));
57 int ptrace_unix_core_file_failing_signal PARAMS ((bfd *abfd));
58 boolean ptrace_unix_core_file_matches_executable_p
59 PARAMS ((bfd *core_bfd, bfd *exec_bfd));
60 static void swap_abort PARAMS ((void));
64 ptrace_unix_core_file_p (abfd)
70 struct trad_core_struct *rawptr;
72 val = bfd_read ((void *)&u, 1, sizeof u, abfd);
73 if (val != sizeof u || u.pt_magic != _BCS_PTRACE_MAGIC
74 || u.pt_rev != _BCS_PTRACE_REV)
76 /* Too small to be a core file */
77 bfd_set_error (bfd_error_wrong_format);
81 /* OK, we believe you. You're a core file (sure, sure). */
83 /* Allocate both the upage and the struct core_data at once, so
84 a single free() will free them both. */
85 rawptr = (struct trad_core_struct *)
86 bfd_zalloc (abfd, sizeof (struct trad_core_struct));
91 abfd->tdata.trad_core_data = rawptr;
93 rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */
95 /* Create the sections. This is raunchy, but bfd_close wants to free
98 core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
99 if (core_stacksec (abfd) == NULL)
101 core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
102 if (core_datasec (abfd) == NULL)
104 core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
105 if (core_regsec (abfd) == NULL)
108 core_stacksec (abfd)->name = ".stack";
109 core_datasec (abfd)->name = ".data";
110 core_regsec (abfd)->name = ".reg";
112 /* FIXME: Need to worry about shared memory, library data, and library
113 text. I don't think that any of these things are supported on the
114 system on which I am developing this for though. */
117 core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
118 core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
119 core_regsec (abfd)->flags = SEC_HAS_CONTENTS;
121 core_datasec (abfd)->_raw_size = u.pt_dsize;
122 core_stacksec (abfd)->_raw_size = u.pt_ssize;
123 core_regsec (abfd)->_raw_size = sizeof(u);
125 core_datasec (abfd)->vma = u.pt_o_data_start;
126 core_stacksec (abfd)->vma = USRSTACK - u.pt_ssize;
127 core_regsec (abfd)->vma = 0 - sizeof(u); /* see trad-core.c */
129 core_datasec (abfd)->filepos = (int) u.pt_dataptr;
130 core_stacksec (abfd)->filepos = (int) (u.pt_dataptr + u.pt_dsize);
131 core_regsec (abfd)->filepos = 0; /* Register segment is ptrace_user */
133 /* Align to word at least */
134 core_stacksec (abfd)->alignment_power = 2;
135 core_datasec (abfd)->alignment_power = 2;
136 core_regsec (abfd)->alignment_power = 2;
138 abfd->sections = core_stacksec (abfd);
139 core_stacksec (abfd)->next = core_datasec (abfd);
140 core_datasec (abfd)->next = core_regsec (abfd);
141 abfd->section_count = 3;
147 ptrace_unix_core_file_failing_command (abfd)
150 char *com = abfd->tdata.trad_core_data->u.pt_comm;
159 ptrace_unix_core_file_failing_signal (abfd)
162 return abfd->tdata.trad_core_data->u.pt_sigframe.sig_num;
167 ptrace_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
168 bfd *core_bfd, *exec_bfd;
170 /* FIXME: Use pt_timdat field of the ptrace_user structure to match
171 the date of the executable */
175 /* If somebody calls any byte-swapping routines, shoot them. */
179 abort(); /* This way doesn't require any declaration for ANSI to fuck up */
181 #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort )
182 #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
183 #define NO_SIGNED_GET \
184 ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
186 const bfd_target ptrace_core_vec =
189 bfd_target_unknown_flavour,
190 BFD_ENDIAN_UNKNOWN, /* target byte order */
191 BFD_ENDIAN_UNKNOWN, /* target headers byte order */
192 (HAS_RELOC | EXEC_P | /* object flags */
193 HAS_LINENO | HAS_DEBUG |
194 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
195 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
196 0, /* symbol prefix */
197 ' ', /* ar_pad_char */
198 16, /* ar_max_namelen */
199 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
200 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
201 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
202 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
203 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
204 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
206 { /* bfd_check_format */
207 _bfd_dummy_target, /* unknown format */
208 _bfd_dummy_target, /* object file */
209 _bfd_dummy_target, /* archive */
210 ptrace_unix_core_file_p /* a core file */
212 { /* bfd_set_format */
213 bfd_false, bfd_false,
216 { /* bfd_write_contents */
217 bfd_false, bfd_false,
221 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
222 BFD_JUMP_TABLE_COPY (_bfd_generic),
223 BFD_JUMP_TABLE_CORE (ptrace_unix),
224 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
225 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
226 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
227 BFD_JUMP_TABLE_WRITE (_bfd_generic),
228 BFD_JUMP_TABLE_LINK (_bfd_nolink),
229 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
231 (PTR) 0 /* backend_data */
234 #endif /* PTRACE_CORE */