1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
/*--------------------------------------------------------------------*/
/*--- Assertions and panics. m_libcassert.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2000-2009 Julian Seward
jseward@acm.org
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.
The GNU General Public License is contained in the file COPYING.
*/
#include "pub_core_basics.h"
#include "pub_core_vki.h"
#include "pub_core_vkiscnums.h"
#include "pub_core_threadstate.h"
#include "pub_core_libcbase.h"
#include "pub_core_libcassert.h"
#include "pub_core_libcprint.h"
#include "pub_core_libcproc.h" // For VG_(gettid)()
#include "pub_core_stacktrace.h"
#include "pub_core_syscall.h"
#include "pub_core_tooliface.h" // For VG_(details).{name,bug_reports_to}
#include "pub_core_options.h" // For VG_(clo_xml)
/* ---------------------------------------------------------------------
Assertery.
------------------------------------------------------------------ */
#if defined(VGP_x86_linux) || defined(VGP_x86_darwin)
# define GET_REAL_PC_SP_AND_FP(pc, sp, fp) \
asm("call 0f;" \
"0: popl %0;" \
"movl %%esp, %1;" \
"movl %%ebp, %2;" \
: "=r" (pc),\
"=r" (sp),\
"=r" (fp));
#elif defined(VGP_amd64_linux) || defined(VGP_amd64_darwin)
# define GET_REAL_PC_SP_AND_FP(pc, sp, fp) \
asm("leaq 0(%%rip), %0;" \
"movq %%rsp, %1;" \
"movq %%rbp, %2;" \
: "=r" (pc),\
"=r" (sp),\
"=r" (fp));
#elif defined(VGP_ppc32_linux) || defined(VGP_ppc32_aix5)
# define GET_REAL_PC_SP_AND_FP(pc, sp, fp) \
asm("mflr 0;" /* r0 = lr */ \
"bl m_libcassert_get_ip;" /* lr = pc */ \
"m_libcassert_get_ip:\n" \
"mflr %0;" \
"mtlr 0;" /* restore lr */ \
"mr %1,1;" \
"mr %2,1;" \
: "=r" (pc), \
"=r" (sp), \
"=r" (fp) \
: /* reads none */ \
: "r0" /* trashed */ );
#elif defined(VGP_ppc64_linux) || defined(VGP_ppc64_aix5)
# define GET_REAL_PC_SP_AND_FP(pc, sp, fp) \
asm("mflr 0;" /* r0 = lr */ \
"bl .m_libcassert_get_ip;" /* lr = pc */ \
".m_libcassert_get_ip:\n" \
"mflr %0;" \
"mtlr 0;" /* restore lr */ \
"mr %1,1;" \
"mr %2,1;" \
: "=r" (pc), \
"=r" (sp), \
"=r" (fp) \
: /* reads none */ \
: "r0" /* trashed */ );
#else
# error Unknown platform
#endif
#define BACKTRACE_DEPTH 100 // nice and deep!
/* Pull down the entire world */
void VG_(exit)( Int status )
{
#if defined(VGO_linux)
(void)VG_(do_syscall1)(__NR_exit_group, status );
#elif defined(VGO_aix5) || defined(VGO_darwin)
(void)VG_(do_syscall1)(__NR_exit, status );
#else
# error Unknown OS
#endif
/*NOTREACHED*/
// We really shouldn't reach here. Just in case we do, use some very crude
// methods to force abort
__builtin_trap();
*(volatile Int*)0 = 'x';
}
// Print the scheduler status.
void VG_(show_sched_status) ( void )
{
Int i;
VG_(printf)("\nsched status:\n");
VG_(printf)(" running_tid=%d\n", VG_(get_running_tid)());
for (i = 1; i < VG_N_THREADS; i++) {
if (VG_(threads)[i].status == VgTs_Empty) continue;
VG_(printf)( "\nThread %d: status = %s\n", i,
VG_(name_of_ThreadStatus)(VG_(threads)[i].status) );
VG_(get_and_pp_StackTrace)( i, BACKTRACE_DEPTH );
}
VG_(printf)("\n");
}
__attribute__ ((noreturn))
static void report_and_quit ( const Char* report,
Addr ip, Addr sp, Addr fp, Addr lr )
{
Addr stacktop;
Addr ips[BACKTRACE_DEPTH];
Int n_ips;
ThreadState *tst
= VG_(get_ThreadState)( VG_(lwpid_to_vgtid)( VG_(gettid)() ) );
// If necessary, fake up an ExeContext which is of our actual real CPU
// state. Could cause problems if we got the panic/exception within the
// execontext/stack dump/symtab code. But it's better than nothing.
if (0 == ip && 0 == sp && 0 == fp) {
GET_REAL_PC_SP_AND_FP(ip, sp, fp);
}
stacktop = tst->os_state.valgrind_stack_init_SP;
n_ips =
VG_(get_StackTrace_wrk)(
0/*tid is unknown*/,
ips, BACKTRACE_DEPTH,
NULL/*array to dump SP values in*/,
NULL/*array to dump FP values in*/,
ip, sp, fp, lr, sp, stacktop
);
VG_(pp_StackTrace) (ips, n_ips);
VG_(show_sched_status)();
VG_(printf)(
"\n"
"Note: see also the FAQ in the source distribution.\n"
"It contains workarounds to several common problems.\n"
"In particular, if Valgrind aborted or crashed after\n"
"identifying problems in your program, there's a good chance\n"
"that fixing those problems will prevent Valgrind aborting or\n"
"crashing, especially if it happened in m_mallocfree.c.\n"
"\n"
"If that doesn't help, please report this bug to: %s\n\n"
"In the bug report, send all the above text, the valgrind\n"
"version, and what OS and version you are using. Thanks.\n\n",
report);
VG_(exit)(1);
}
void VG_(assert_fail) ( Bool isCore, const Char* expr, const Char* file,
Int line, const Char* fn, const HChar* format, ... )
{
va_list vargs;
Char buf[256];
Char* component;
Char* bugs_to;
static Bool entered = False;
if (entered)
VG_(exit)(2);
entered = True;
va_start(vargs, format);
VG_(vsprintf) ( buf, format, vargs );
va_end(vargs);
if (isCore) {
component = "valgrind";
bugs_to = VG_BUGS_TO;
} else {
component = VG_(details).name;
bugs_to = VG_(details).bug_reports_to;
}
if (VG_(clo_xml))
VG_UMSG("</valgrindoutput>\n");
// Treat vg_assert2(0, "foo") specially, as a panicky abort
if (VG_STREQ(expr, "0")) {
VG_(printf)("\n%s: %s:%d (%s): the 'impossible' happened.\n",
component, file, line, fn );
} else {
VG_(printf)("\n%s: %s:%d (%s): Assertion '%s' failed.\n",
component, file, line, fn, expr );
}
if (!VG_STREQ(buf, ""))
VG_(printf)("%s: %s\n", component, buf );
report_and_quit(bugs_to, 0,0,0,0);
}
__attribute__ ((noreturn))
static void panic ( Char* name, Char* report, Char* str,
Addr ip, Addr sp, Addr fp, Addr lr )
{
if (VG_(clo_xml))
VG_UMSG("</valgrindoutput>\n");
VG_(printf)("\n%s: the 'impossible' happened:\n %s\n", name, str);
report_and_quit(report, ip, sp, fp, lr);
}
void VG_(core_panic_at) ( Char* str, Addr ip, Addr sp, Addr fp, Addr lr )
{
panic("valgrind", VG_BUGS_TO, str, ip, sp, fp, lr);
}
void VG_(core_panic) ( Char* str )
{
VG_(core_panic_at)(str, 0,0,0,0);
}
void VG_(tool_panic) ( Char* str )
{
panic(VG_(details).name, VG_(details).bug_reports_to, str, 0,0,0,0);
}
/* Print some helpful-ish text about unimplemented things, and give up. */
void VG_(unimplemented) ( Char* msg )
{
if (VG_(clo_xml))
VG_UMSG("</valgrindoutput>\n");
VG_UMSG("");
VG_UMSG("Valgrind detected that your program requires");
VG_UMSG("the following unimplemented functionality:");
VG_UMSG(" %s", msg);
VG_UMSG("This may be because the functionality is hard to implement,");
VG_UMSG("or because no reasonable program would behave this way,");
VG_UMSG("or because nobody has yet needed it. In any case, let us know at");
VG_UMSG("%s and/or try to work around the problem, if you can.", VG_BUGS_TO);
VG_UMSG("");
VG_UMSG("Valgrind has to exit now. Sorry. Bye!");
VG_UMSG("");
VG_(show_sched_status)();
VG_(exit)(1);
}
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/
|
