1 /* IBM RS/6000 "XCOFF" back-end for BFD.
2 Copyright (C) 2001-2022 Free Software Foundation, Inc.
4 Contributed by Red Hat Inc.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
26 bfd_cleanup
xcoff64_core_p (bfd
*);
27 bool xcoff64_core_file_matches_executable_p (bfd
*, bfd
*);
28 char *xcoff64_core_file_failing_command (bfd
*);
29 int xcoff64_core_file_failing_signal (bfd
*);
35 /* Aix 5.1 system include file. */
37 /* Need to define this macro so struct ld_info64 get included. */
38 #define __LDINFO_PTRACE64__
42 /* The default architecture and machine for matching core files. */
43 #define DEFAULT_ARCHITECTURE bfd_arch_powerpc
44 #define DEFAULT_MACHINE bfd_mach_ppc_620
46 #define core_hdr(abfd) ((struct core_dumpxx *) abfd->tdata.any)
48 #define CHECK_FILE_OFFSET(s, v) \
49 ((bfd_signed_vma)(v) < 0 || (bfd_signed_vma)(v) > (bfd_signed_vma)(s).st_size)
52 xcoff64_core_p (bfd
*abfd
)
54 enum bfd_architecture arch
;
56 struct core_dumpxx core
, *new_core_hdr
;
59 struct __ld_info64 ldinfo
;
62 struct vm_infox vminfo
;
66 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0)
67 goto xcoff64_core_p_error
;
69 if (sizeof (struct core_dumpxx
)
70 != bfd_bread (&core
, sizeof (struct core_dumpxx
), abfd
))
71 goto xcoff64_core_p_error
;
73 if (bfd_stat (abfd
, &statbuf
) < 0)
74 goto xcoff64_core_p_error
;
77 c_flag has CORE_VERSION_1, Aix 4+
78 c_entries = 0 for Aix 4.3+
79 IS_PROC64 is a macro defined in procinfo.h, test for 64 bit process.
81 We will still be confused if a Aix 4.3 64 bit core file is
82 copied over to a Aix 5 machine.
84 Check file header offsets
86 See rs6000-core.c for comment on size of core
87 If there isn't enough of a real core file, bail. */
89 if ((CORE_VERSION_1
!= (core
.c_flag
& CORE_VERSION_1
))
90 || (0 != core
.c_entries
)
91 || (! (IS_PROC64 (&core
.c_u
.U_proc
)))
92 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_fdsinfox
)))
93 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_loader
)))
94 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_loader
+ core
.c_lsize
)))
95 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_thr
)))
96 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_segregion
)))
97 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_stack
)))
98 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_stack
+ core
.c_size
)))
99 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_data
)))
100 || ((CHECK_FILE_OFFSET (statbuf
, core
.c_data
+ core
.c_datasize
)))
101 || (! (core
.c_flag
& UBLOCK_VALID
))
102 || (! (core
.c_flag
& LE_VALID
)))
103 goto xcoff64_core_p_error
;
105 /* Check for truncated stack or general truncating. */
106 if ((! (core
.c_flag
& USTACK_VALID
))
107 || (core
.c_flag
& CORE_TRUNC
))
109 bfd_set_error (bfd_error_file_truncated
);
114 new_core_hdr
= bfd_zalloc (abfd
, sizeof (struct core_dumpxx
));
115 if (NULL
== new_core_hdr
)
118 memcpy (new_core_hdr
, &core
, sizeof (struct core_dumpxx
));
119 /* The core_hdr() macro is no longer used here because it would
120 expand to code relying on gcc's cast-as-lvalue extension,
121 which was removed in gcc 4.0. */
122 abfd
->tdata
.any
= new_core_hdr
;
124 /* .stack section. */
125 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
;
126 sec
= bfd_make_section_anyway_with_flags (abfd
, ".stack", flags
);
130 sec
->size
= core
.c_size
;
131 sec
->vma
= core
.c_stackorg
;
132 sec
->filepos
= core
.c_stack
;
134 /* .reg section for all registers. */
135 flags
= SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
136 sec
= bfd_make_section_anyway_with_flags (abfd
, ".reg", flags
);
140 sec
->size
= sizeof (struct __context64
);
143 sec
->contents
= (bfd_byte
*)&new_core_hdr
->c_flt
.r64
;
146 To actually find out how long this section is in this particular
147 core dump would require going down the whole list of struct
148 ld_info's. See if we can just fake it. */
149 flags
= SEC_HAS_CONTENTS
;
150 sec
= bfd_make_section_anyway_with_flags (abfd
, ".ldinfo", flags
);
154 sec
->size
= core
.c_lsize
;
156 sec
->filepos
= core
.c_loader
;
158 /* AIX 4 adds data sections from loaded objects to the core file,
159 which can be found by examining ldinfo, and anonymously mmapped
162 /* .data section from executable. */
163 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
;
164 sec
= bfd_make_section_anyway_with_flags (abfd
, ".data", flags
);
168 sec
->size
= core
.c_datasize
;
169 sec
->vma
= core
.c_dataorg
;
170 sec
->filepos
= core
.c_data
;
172 /* .data sections from loaded objects. */
173 ld_offset
= core
.c_loader
;
177 if (bfd_seek (abfd
, ld_offset
, SEEK_SET
) != 0)
180 if (sizeof (struct __ld_info64
) !=
181 bfd_bread (&ldinfo
, sizeof (struct __ld_info64
), abfd
))
184 if (ldinfo
.ldinfo_core
)
186 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
;
187 sec
= bfd_make_section_anyway_with_flags (abfd
, ".data", flags
);
191 sec
->size
= ldinfo
.ldinfo_datasize
;
192 sec
->vma
= ldinfo
.ldinfo_dataorg
;
193 sec
->filepos
= ldinfo
.ldinfo_core
;
196 if (0 == ldinfo
.ldinfo_next
)
198 ld_offset
+= ldinfo
.ldinfo_next
;
201 /* .vmdata sections from anonymously mmapped regions. */
202 if (core
.c_vmregions
)
204 if (bfd_seek (abfd
, core
.c_vmm
, SEEK_SET
) != 0)
207 for (i
= 0; i
< core
.c_vmregions
; i
++)
208 if (sizeof (struct vm_infox
) !=
209 bfd_bread (&vminfo
, sizeof (struct vm_infox
), abfd
))
212 if (vminfo
.vminfo_offset
)
214 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
;
215 sec
= bfd_make_section_anyway_with_flags (abfd
, ".vmdata", flags
);
219 sec
->size
= vminfo
.vminfo_size
;
220 sec
->vma
= vminfo
.vminfo_addr
;
221 sec
->filepos
= vminfo
.vminfo_offset
;
225 /* Set the architecture and machine. */
226 arch
= DEFAULT_ARCHITECTURE
;
227 mach
= DEFAULT_MACHINE
;
228 bfd_default_set_arch_mach (abfd
, arch
, mach
);
230 return _bfd_no_cleanup
;
232 xcoff64_core_p_error
:
233 if (bfd_get_error () != bfd_error_system_call
)
234 bfd_set_error (bfd_error_wrong_format
);
239 /* Return `TRUE' if given core is from the given executable. */
242 xcoff64_core_file_matches_executable_p (bfd
*core_bfd
, bfd
*exec_bfd
)
244 struct core_dumpxx core
;
247 const char *str1
, *str2
;
248 bool return_value
= false;
250 /* Get the header. */
251 if (bfd_seek (core_bfd
, 0, SEEK_SET
) != 0)
254 if (sizeof (struct core_dumpxx
) !=
255 bfd_bread (&core
, sizeof (struct core_dumpxx
), core_bfd
))
258 if (bfd_seek (core_bfd
, core
.c_loader
, SEEK_SET
) != 0)
262 path
= bfd_malloc (alloc
);
270 if (bfd_bread (s
, 1, core_bfd
) != 1)
271 goto xcoff64_core_file_matches_executable_p_end_1
;
276 if (s
== path
+ alloc
)
281 n
= bfd_realloc (path
, alloc
);
283 goto xcoff64_core_file_matches_executable_p_end_1
;
290 str1
= strrchr (path
, '/');
291 str2
= strrchr (bfd_get_filename (exec_bfd
), '/');
293 /* Step over character '/'. */
294 str1
= str1
!= NULL
? str1
+ 1 : path
;
295 str2
= str2
!= NULL
? str2
+ 1 : bfd_get_filename (exec_bfd
);
297 if (strcmp (str1
, str2
) == 0)
300 xcoff64_core_file_matches_executable_p_end_1
:
306 xcoff64_core_file_failing_command (bfd
*abfd
)
308 struct core_dumpxx
*c
= core_hdr (abfd
);
309 char *return_value
= 0;
312 return_value
= c
->c_u
.U_proc
.pi_comm
;
318 xcoff64_core_file_failing_signal (bfd
*abfd
)
320 struct core_dumpxx
*c
= core_hdr (abfd
);
321 int return_value
= 0;
324 return_value
= c
->c_signo
;
329 #else /* AIX_5_CORE */
332 xcoff64_core_p (bfd
*abfd ATTRIBUTE_UNUSED
)
334 bfd_set_error (bfd_error_wrong_format
);
339 xcoff64_core_file_matches_executable_p (bfd
*core_bfd
, bfd
*exec_bfd
)
341 return generic_core_file_matches_executable_p (core_bfd
, exec_bfd
);
345 xcoff64_core_file_failing_command (bfd
*abfd ATTRIBUTE_UNUSED
)
351 xcoff64_core_file_failing_signal (bfd
*abfd ATTRIBUTE_UNUSED
)
356 #endif /* AIX_5_CORE */