1 /* IBM RS/6000 "XCOFF" back-end for BFD.
2 Copyright 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
5 Contributed by Red Hat Inc.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
31 const bfd_target *xcoff64_core_p (bfd *);
32 bfd_boolean xcoff64_core_file_matches_executable_p (bfd *, bfd *);
33 char *xcoff64_core_file_failing_command (bfd *);
34 int xcoff64_core_file_failing_signal (bfd *);
36 /* Aix 5.1 system include file. */
38 /* Need to define this macro so struct ld_info64 get included. */
39 #define __LDINFO_PTRACE64__
43 #define core_hdr(abfd) ((struct core_dumpxx *) abfd->tdata.any)
45 #define CHECK_FILE_OFFSET(s, v) \
46 ((bfd_signed_vma)(v) < 0 || (bfd_signed_vma)(v) > (bfd_signed_vma)(s).st_size)
49 xcoff64_core_p (bfd *abfd)
51 struct core_dumpxx core, *new_core_hdr;
54 struct __ld_info64 ldinfo;
57 struct vm_infox vminfo;
58 bfd_target *return_value = NULL;
61 if (bfd_seek (abfd, 0, SEEK_SET) != 0)
62 goto xcoff64_core_p_error;
64 if (sizeof (struct core_dumpxx)
65 != bfd_bread (&core, sizeof (struct core_dumpxx), abfd))
66 goto xcoff64_core_p_error;
68 if (bfd_stat (abfd, &statbuf) < 0)
69 goto xcoff64_core_p_error;
72 c_flag has CORE_VERSION_1, Aix 4+
73 c_entries = 0 for Aix 4.3+
74 IS_PROC64 is a macro defined in procinfo.h, test for 64 bit process.
76 We will still be confused if a Aix 4.3 64 bit core file is
77 copied over to a Aix 5 machine.
79 Check file header offsets
81 See rs6000-core.c for comment on size of core
82 If there isn't enough of a real core file, bail. */
84 if ((CORE_VERSION_1 != (core.c_flag & CORE_VERSION_1))
85 || (0 != core.c_entries)
86 || (! (IS_PROC64 (&core.c_u.U_proc)))
87 || ((CHECK_FILE_OFFSET (statbuf, core.c_fdsinfox)))
88 || ((CHECK_FILE_OFFSET (statbuf, core.c_loader)))
89 || ((CHECK_FILE_OFFSET (statbuf, core.c_loader + core.c_lsize)))
90 || ((CHECK_FILE_OFFSET (statbuf, core.c_thr)))
91 || ((CHECK_FILE_OFFSET (statbuf, core.c_segregion)))
92 || ((CHECK_FILE_OFFSET (statbuf, core.c_stack)))
93 || ((CHECK_FILE_OFFSET (statbuf, core.c_stack + core.c_size)))
94 || ((CHECK_FILE_OFFSET (statbuf, core.c_data)))
95 || ((CHECK_FILE_OFFSET (statbuf, core.c_data + core.c_datasize)))
96 || (! (core.c_flag & UBLOCK_VALID))
97 || (! (core.c_flag & LE_VALID)))
98 goto xcoff64_core_p_error;
100 /* Check for truncated stack or general truncating. */
101 if ((! (core.c_flag & USTACK_VALID))
102 || (core.c_flag & CORE_TRUNC))
104 bfd_set_error (bfd_error_file_truncated);
109 new_core_hdr = bfd_zalloc (abfd, sizeof (struct core_dumpxx));
110 if (NULL == new_core_hdr)
113 memcpy (new_core_hdr, &core, sizeof (struct core_dumpxx));
114 core_hdr(abfd) = (char *)new_core_hdr;
116 /* .stack section. */
117 sec = bfd_make_section_anyway (abfd, ".stack");
121 sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
122 sec->size = core.c_size;
123 sec->vma = core.c_stackorg;
124 sec->filepos = core.c_stack;
126 /* .reg section for all registers. */
127 sec = bfd_make_section_anyway (abfd, ".reg");
131 sec->flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY;
132 sec->size = sizeof (struct __context64);
135 sec->contents = (bfd_byte *)&new_core_hdr->c_flt.r64;
138 To actually find out how long this section is in this particular
139 core dump would require going down the whole list of struct
140 ld_info's. See if we can just fake it. */
141 sec = bfd_make_section_anyway (abfd, ".ldinfo");
145 sec->flags = SEC_HAS_CONTENTS;
146 sec->size = core.c_lsize;
148 sec->filepos = core.c_loader;
150 /* AIX 4 adds data sections from loaded objects to the core file,
151 which can be found by examining ldinfo, and anonymously mmapped
154 /* .data section from executable. */
155 sec = bfd_make_section_anyway (abfd, ".data");
159 sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
160 sec->size = core.c_datasize;
161 sec->vma = core.c_dataorg;
162 sec->filepos = core.c_data;
164 /* .data sections from loaded objects. */
165 ld_offset = core.c_loader;
169 if (bfd_seek (abfd, ld_offset, SEEK_SET) != 0)
172 if (sizeof (struct __ld_info64) !=
173 bfd_bread (&ldinfo, sizeof (struct __ld_info64), abfd))
176 if (ldinfo.ldinfo_core)
178 sec = bfd_make_section_anyway (abfd, ".data");
182 sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
183 sec->size = ldinfo.ldinfo_datasize;
184 sec->vma = ldinfo.ldinfo_dataorg;
185 sec->filepos = ldinfo.ldinfo_core;
188 if (0 == ldinfo.ldinfo_next)
190 ld_offset += ldinfo.ldinfo_next;
193 /* .vmdata sections from anonymously mmapped regions. */
194 if (core.c_vmregions)
196 if (bfd_seek (abfd, core.c_vmm, SEEK_SET) != 0)
199 for (i = 0; i < core.c_vmregions; i++)
200 if (sizeof (struct vm_infox) !=
201 bfd_bread (&vminfo, sizeof (struct vm_infox), abfd))
204 if (vminfo.vminfo_offset)
206 sec = bfd_make_section_anyway (abfd, ".vmdata");
210 sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
211 sec->size = vminfo.vminfo_size;
212 sec->vma = vminfo.vminfo_addr;
213 sec->filepos = vminfo.vminfo_offset;
217 return_value = (bfd_target *) abfd->xvec; /* This is garbage for now. */
219 xcoff64_core_p_error:
220 if (bfd_get_error () != bfd_error_system_call)
221 bfd_set_error (bfd_error_wrong_format);
226 /* Return `TRUE' if given core is from the given executable. */
229 xcoff64_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
231 struct core_dumpxx core;
234 const char *str1, *str2;
235 bfd_boolean return_value = FALSE;
237 /* Get the header. */
238 if (bfd_seek (core_bfd, 0, SEEK_SET) != 0)
241 if (sizeof (struct core_dumpxx) !=
242 bfd_bread (&core, sizeof (struct core_dumpxx), core_bfd))
245 if (bfd_seek (core_bfd, core.c_loader, SEEK_SET) != 0)
249 path = bfd_malloc (alloc);
257 if (bfd_bread (s, 1, core_bfd) != 1)
258 goto xcoff64_core_file_matches_executable_p_end_1;
263 if (s == path + alloc)
268 n = bfd_realloc (path, alloc);
270 goto xcoff64_core_file_matches_executable_p_end_1;
277 str1 = strrchr (path, '/');
278 str2 = strrchr (exec_bfd->filename, '/');
280 /* Step over character '/'. */
281 str1 = str1 != NULL ? str1 + 1 : path;
282 str2 = str2 != NULL ? str2 + 1 : exec_bfd->filename;
284 if (strcmp (str1, str2) == 0)
287 xcoff64_core_file_matches_executable_p_end_1:
293 xcoff64_core_file_failing_command (bfd *abfd)
295 struct core_dumpxx *c = core_hdr (abfd);
296 char *return_value = 0;
299 return_value = c->c_u.U_proc.pi_comm;
305 xcoff64_core_file_failing_signal (bfd *abfd)
307 struct core_dumpxx *c = core_hdr (abfd);
308 int return_value = 0;
311 return_value = c->c_signo;
316 #else /* AIX_5_CORE */
318 const bfd_target *xcoff64_core_p (bfd *);
319 bfd_boolean xcoff64_core_file_matches_executable_p (bfd *, bfd *);
320 char *xcoff64_core_file_failing_command (bfd *);
321 int xcoff64_core_file_failing_signal (bfd *);
324 xcoff64_core_p (bfd *abfd ATTRIBUTE_UNUSED)
326 bfd_set_error (bfd_error_wrong_format);
331 xcoff64_core_file_matches_executable_p (bfd *core_bfd ATTRIBUTE_UNUSED,
332 bfd *exec_bfd ATTRIBUTE_UNUSED)
338 xcoff64_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED)
344 xcoff64_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
349 #endif /* AIX_5_CORE */