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3a58abaf AM |
1 | https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=216711 |
2 | ||
3 | FIXME: This workaround should be dropped and | |
4 | glibc/sysdeps/unix/sysv/linux/x86_64/clone.S should get CFI for the child | |
5 | instead. | |
6 | ||
7 | 2006-12-17 Jan Kratochvil <jan.kratochvil@redhat.com> | |
8 | ||
9 | * gdb/amd64-linux-tdep.c (linux_clone_code): New variable. | |
10 | (LINUX_CLONE_LEN): New definition. | |
11 | (amd64_linux_clone_running, amd64_linux_outermost_frame): New function. | |
12 | (amd64_linux_init_abi): Initialize `outermost_frame_p'. | |
13 | * gdb/i386-tdep.c (i386_gdbarch_init): Likewise. | |
14 | * gdb/i386-tdep.h (gdbarch_tdep): Add `outermost_frame_p' member. | |
15 | * gdb/amd64-tdep.c (amd64_frame_this_id): Call `outermost_frame_p'. | |
16 | ||
17 | 2006-12-17 Jan Kratochvil <jan.kratochvil@redhat.com> | |
18 | ||
19 | * gdb.threads/bt-clone-stop.exp, gdb.threads/bt-clone-stop.c: | |
20 | New file. | |
21 | ||
22 | 2007-10-16 Jan Kratochvil <jan.kratochvil@redhat.com> | |
23 | ||
24 | Port to GDB-6.7. | |
25 | ||
f412e1b4 PS |
26 | Index: gdb-7.4.50.20120120/gdb/amd64-linux-tdep.c |
27 | =================================================================== | |
28 | --- gdb-7.4.50.20120120.orig/gdb/amd64-linux-tdep.c 2012-03-02 22:15:48.000000000 +0100 | |
29 | +++ gdb-7.4.50.20120120/gdb/amd64-linux-tdep.c 2012-03-02 22:16:13.526569163 +0100 | |
30 | @@ -268,6 +268,80 @@ amd64_linux_register_reggroup_p (struct | |
31 | ||
32 | /* Set the program counter for process PTID to PC. */ | |
33 | ||
34 | +/* Detect the outermost frame; during unwind of | |
35 | + #5 0x000000305cec68c3 in clone () from /lib64/tls/libc.so.6 | |
36 | + avoid the additional bogus frame | |
37 | + #6 0x0000000000000000 in ?? | |
38 | + We compare if the `linux_clone_code' block is _before_ unwound PC. */ | |
39 | + | |
40 | +static const unsigned char linux_clone_code[] = | |
41 | +{ | |
42 | +/* libc/sysdeps/unix/sysv/linux/x86_64/clone.S */ | |
43 | +/* #ifdef RESET_PID */ | |
44 | +/* ... */ | |
45 | +/* mov $SYS_ify(getpid), %eax */ | |
46 | +/* 0xb8, 0x27, 0x00, 0x00, 0x00 */ | |
47 | +/* OR */ | |
48 | +/* mov $SYS_ify(getpid), %rax */ | |
49 | +/* 0x48, 0xc7, 0xc0, 0x27, 0x00, 0x00, 0x00 */ | |
50 | +/* so just: */ | |
51 | + 0x27, 0x00, 0x00, 0x00, | |
52 | +/* syscall */ | |
53 | + 0x0f, 0x05, | |
54 | +/* movl %eax, %fs:PID */ | |
55 | + 0x64, 0x89, 0x04, 0x25, 0x94, 0x00, 0x00, 0x00, | |
56 | +/* movl %eax, %fs:TID */ | |
57 | + 0x64, 0x89, 0x04, 0x25, 0x90, 0x00, 0x00, 0x00, | |
58 | +/* #endif */ | |
59 | +/* |* Set up arguments for the function call. *| */ | |
60 | +/* popq %rax |* Function to call. *| */ | |
61 | + 0x58, | |
62 | +/* popq %rdi |* Argument. *| */ | |
63 | + 0x5f, | |
64 | +/* call *%rax$ */ | |
65 | + 0xff, 0xd0 | |
66 | +}; | |
67 | + | |
68 | +#define LINUX_CLONE_LEN (sizeof linux_clone_code) | |
69 | + | |
70 | +static int | |
71 | +amd64_linux_clone_running (struct frame_info *this_frame) | |
72 | +{ | |
73 | + CORE_ADDR pc = get_frame_pc (this_frame); | |
74 | + unsigned char buf[LINUX_CLONE_LEN]; | |
75 | + | |
76 | + if (!safe_frame_unwind_memory (this_frame, pc - LINUX_CLONE_LEN, buf, | |
77 | + LINUX_CLONE_LEN)) | |
78 | + return 0; | |
79 | + | |
80 | + if (memcmp (buf, linux_clone_code, LINUX_CLONE_LEN) != 0) | |
81 | + return 0; | |
82 | + | |
83 | + return 1; | |
84 | +} | |
85 | + | |
86 | +static int | |
87 | +amd64_linux_outermost_frame (struct frame_info *this_frame) | |
88 | +{ | |
89 | + CORE_ADDR pc = get_frame_pc (this_frame); | |
90 | + char *name; | |
91 | + | |
92 | + find_pc_partial_function (pc, &name, NULL, NULL); | |
93 | + | |
94 | + /* If we have NAME, we can optimize the search. | |
95 | + `clone' NAME still needs to have the code checked as its name may be | |
96 | + present in the user code. | |
97 | + `__clone' NAME should not be present in the user code but in the initial | |
98 | + parts of the `__clone' implementation the unwind still makes sense. | |
99 | + More detailed unwinding decision would be too much sensitive to possible | |
100 | + subtle changes in specific glibc revisions. */ | |
101 | + if (name == NULL || strcmp (name, "clone") == 0 | |
102 | + || strcmp ("__clone", name) == 0) | |
103 | + return (amd64_linux_clone_running (this_frame) != 0); | |
104 | + | |
105 | + return 0; | |
106 | +} | |
107 | + | |
108 | static void | |
109 | amd64_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) | |
110 | { | |
111 | @@ -1321,6 +1395,8 @@ amd64_linux_init_abi (struct gdbarch_inf | |
112 | ||
113 | tdep->xsave_xcr0_offset = I386_LINUX_XSAVE_XCR0_OFFSET; | |
114 | ||
115 | + tdep->outermost_frame_p = amd64_linux_outermost_frame; | |
116 | + | |
117 | /* GNU/Linux uses SVR4-style shared libraries. */ | |
118 | set_solib_svr4_fetch_link_map_offsets | |
119 | (gdbarch, svr4_lp64_fetch_link_map_offsets); | |
120 | Index: gdb-7.4.50.20120120/gdb/amd64-tdep.c | |
121 | =================================================================== | |
122 | --- gdb-7.4.50.20120120.orig/gdb/amd64-tdep.c 2012-01-04 09:16:56.000000000 +0100 | |
123 | +++ gdb-7.4.50.20120120/gdb/amd64-tdep.c 2012-03-02 22:17:39.133287571 +0100 | |
124 | @@ -2108,6 +2108,7 @@ amd64_frame_unwind_stop_reason (struct f | |
125 | { | |
126 | struct amd64_frame_cache *cache = | |
127 | amd64_frame_cache (this_frame, this_cache); | |
128 | + struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame)); | |
129 | ||
130 | if (!cache->base_p) | |
131 | return UNWIND_UNAVAILABLE; | |
132 | @@ -2116,6 +2117,10 @@ amd64_frame_unwind_stop_reason (struct f | |
133 | if (cache->base == 0) | |
134 | return UNWIND_OUTERMOST; | |
135 | ||
136 | + /* Detect OS dependent outermost frames; such as `clone'. */ | |
137 | + if (tdep->outermost_frame_p && tdep->outermost_frame_p (this_frame)) | |
138 | + return UNWIND_OUTERMOST; | |
139 | + | |
140 | return UNWIND_NO_REASON; | |
141 | } | |
142 | ||
143 | @@ -2125,6 +2130,7 @@ amd64_frame_this_id (struct frame_info * | |
144 | { | |
145 | struct amd64_frame_cache *cache = | |
146 | amd64_frame_cache (this_frame, this_cache); | |
147 | + struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame)); | |
148 | ||
149 | if (!cache->base_p) | |
150 | return; | |
151 | @@ -2133,6 +2139,10 @@ amd64_frame_this_id (struct frame_info * | |
152 | if (cache->base == 0) | |
153 | return; | |
154 | ||
155 | + /* Detect OS dependent outermost frames; such as `clone'. */ | |
156 | + if (tdep->outermost_frame_p && tdep->outermost_frame_p (this_frame)) | |
157 | + return; | |
158 | + | |
159 | (*this_id) = frame_id_build (cache->base + 16, cache->pc); | |
160 | } | |
161 | ||
162 | Index: gdb-7.4.50.20120120/gdb/i386-tdep.c | |
163 | =================================================================== | |
164 | --- gdb-7.4.50.20120120.orig/gdb/i386-tdep.c 2012-03-02 22:15:48.000000000 +0100 | |
165 | +++ gdb-7.4.50.20120120/gdb/i386-tdep.c 2012-03-02 22:16:13.528569157 +0100 | |
166 | @@ -7613,6 +7613,9 @@ i386_gdbarch_init (struct gdbarch_info i | |
167 | ||
168 | tdep->xsave_xcr0_offset = -1; | |
169 | ||
170 | + /* Unwinding stops on i386 automatically. */ | |
171 | + tdep->outermost_frame_p = NULL; | |
172 | + | |
173 | tdep->record_regmap = i386_record_regmap; | |
174 | ||
175 | set_gdbarch_long_long_align_bit (gdbarch, 32); | |
176 | Index: gdb-7.4.50.20120120/gdb/i386-tdep.h | |
177 | =================================================================== | |
178 | --- gdb-7.4.50.20120120.orig/gdb/i386-tdep.h 2012-03-02 22:15:48.000000000 +0100 | |
179 | +++ gdb-7.4.50.20120120/gdb/i386-tdep.h 2012-03-02 22:16:13.529569154 +0100 | |
180 | @@ -219,6 +219,9 @@ struct gdbarch_tdep | |
181 | int (*i386_sysenter_record) (struct regcache *regcache); | |
182 | /* Parse syscall args. */ | |
183 | int (*i386_syscall_record) (struct regcache *regcache); | |
184 | + | |
185 | + /* Detect OS dependent outermost frames; such as `clone'. */ | |
186 | + int (*outermost_frame_p) (struct frame_info *this_frame); | |
187 | }; | |
188 | ||
189 | /* Floating-point registers. */ | |
190 | Index: gdb-7.4.50.20120120/gdb/ia64-tdep.c | |
191 | =================================================================== | |
192 | --- gdb-7.4.50.20120120.orig/gdb/ia64-tdep.c 2012-03-02 22:15:48.000000000 +0100 | |
193 | +++ gdb-7.4.50.20120120/gdb/ia64-tdep.c 2012-03-02 22:16:13.529569154 +0100 | |
194 | @@ -2181,6 +2181,138 @@ static const struct frame_unwind ia64_fr | |
195 | default_frame_sniffer | |
196 | }; | |
197 | ||
198 | +/* Detect the outermost frame; during unwind of | |
199 | + #6 0x2000000000347100 in __clone2 () from /lib/libc.so.6.1 | |
200 | + avoid the additional bogus frame | |
201 | + #7 0x0000000000000000 in ?? () */ | |
202 | + | |
203 | +static char linux_clone2_code[] = | |
204 | +{ | |
205 | +/* libc/sysdeps/unix/sysv/linux/ia64/clone2.S */ | |
206 | + 0x09, 0x00, 0x20, 0x12, 0x90, 0x11, 0x00, 0x40, | |
207 | + 0x28, 0x20, 0x23, 0x00, 0x00, 0x00, 0x04, 0x00, | |
208 | +/* st4 [r9]=r8 */ | |
209 | +/* st4 [r10]=r8 */ | |
210 | +/* ;; */ | |
211 | +/* #endif */ | |
212 | + 0x02, 0x50, 0x21, 0x40, 0x18, 0x14, 0x90, 0x02, | |
213 | + 0x90, 0x00, 0x42, 0x00, 0x00, 0x00, 0x04, 0x00, | |
214 | +/* 1: ld8 out1=[in0],8 |* Retrieve code pointer. *| */ | |
215 | +/* mov out0=in4 |* Pass proper argument to fn *| */ | |
216 | +/* ;; */ | |
217 | + 0x11, 0x08, 0x00, 0x40, 0x18, 0x10, 0x60, 0x50, | |
218 | + 0x05, 0x80, 0x03, 0x00, 0x68, 0x00, 0x80, 0x12, | |
219 | +/* ld8 gp=[in0] |* Load function gp. *| */ | |
220 | +/* mov b6=out1 */ | |
221 | +/* br.call.dptk.many rp=b6 |* Call fn(arg) in the child *| */ | |
222 | +/* ;; */ | |
223 | + 0x10, 0x48, 0x01, 0x10, 0x00, 0x21, 0x10, 0x00, | |
224 | + 0xa0, 0x00, 0x42, 0x00, 0x98, 0xdf, 0xf7, 0x5b, | |
225 | +/* mov out0=r8 |* Argument to _exit *| */ | |
226 | +/* mov gp=loc0 */ | |
227 | +/* .globl HIDDEN_JUMPTARGET(_exit) */ | |
228 | +/* br.call.dpnt.many rp=HIDDEN_JUMPTARGET(_exit) */ | |
229 | +/* |* call _exit with result from fn. *| */ | |
230 | + 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, | |
231 | + 0x00, 0x02, 0x00, 0x80, 0x00, 0x00, 0x84, 0x00 | |
232 | +/* ret |* Not reached. *| */ | |
233 | +}; | |
234 | + | |
235 | +#define LINUX_CLONE_PRE_SLOTS 3 /* Number of slots before PC. */ | |
236 | +#define LINUX_CLONE_LEN (sizeof linux_clone2_code) | |
237 | + | |
238 | +static int | |
239 | +ia64_linux_clone2_running (struct frame_info *this_frame) | |
240 | +{ | |
241 | + CORE_ADDR pc = get_frame_pc (this_frame); | |
242 | + char buf[LINUX_CLONE_LEN]; | |
243 | + struct minimal_symbol *minsym; | |
244 | + long long instr; | |
245 | + | |
246 | + if (!safe_frame_unwind_memory (this_frame, pc - LINUX_CLONE_PRE_SLOTS * 16, | |
247 | + buf, LINUX_CLONE_LEN)) | |
248 | + return 0; | |
249 | + | |
250 | + if (memcmp (buf, linux_clone2_code, LINUX_CLONE_PRE_SLOTS * 16) != 0) | |
251 | + return 0; | |
252 | + | |
253 | + /* Adjust the expected "_exit" address. */ | |
254 | + minsym = lookup_minimal_symbol_text ("_exit", NULL); | |
255 | + if (minsym == NULL) | |
256 | + return 0; | |
257 | + | |
258 | + instr = slotN_contents (&linux_clone2_code[LINUX_CLONE_PRE_SLOTS * 16], 2); | |
259 | + instr &= ~(((1L << 20) - 1) << 13); | |
260 | + /* Address is relative to the jump instruction slot, not the next one. */ | |
261 | + instr |= (((SYMBOL_VALUE_ADDRESS (minsym) - (pc & ~0xfL)) >> 4) | |
262 | + & ((1L << 20) - 1)) << 13; | |
263 | + replace_slotN_contents (&linux_clone2_code[LINUX_CLONE_PRE_SLOTS * 16], instr, | |
264 | + 2); | |
265 | + | |
266 | + if (memcmp (&buf[LINUX_CLONE_PRE_SLOTS * 16], | |
267 | + &linux_clone2_code[LINUX_CLONE_PRE_SLOTS * 16], | |
268 | + LINUX_CLONE_LEN - (LINUX_CLONE_PRE_SLOTS * 16)) != 0) | |
269 | + return 0; | |
270 | + | |
271 | + return 1; | |
272 | +} | |
273 | + | |
274 | +static int | |
275 | +ia64_outermost_frame (struct frame_info *this_frame) | |
276 | +{ | |
277 | + CORE_ADDR pc = get_frame_pc (this_frame); | |
278 | + char *name; | |
279 | + | |
280 | + find_pc_partial_function (pc, &name, NULL, NULL); | |
281 | + | |
282 | + /* If we have NAME, we can optimize the search. | |
283 | + `clone' NAME still needs to have the code checked as its name may be | |
284 | + present in the user code. | |
285 | + `__clone' NAME should not be present in the user code but in the initial | |
286 | + parts of the `__clone' implementation the unwind still makes sense. | |
287 | + More detailed unwinding decision would be too much sensitive to possible | |
288 | + subtle changes in specific glibc revisions. */ | |
289 | + if (name == NULL || strcmp (name, "clone2") == 0 | |
290 | + || strcmp ("__clone2", name) == 0) | |
291 | + return (ia64_linux_clone2_running (this_frame) != 0); | |
292 | + | |
293 | + return 0; | |
294 | +} | |
295 | + | |
296 | +static void | |
297 | +ia64_clone2_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
298 | + struct frame_id *this_id) | |
299 | +{ | |
300 | + /* Leave the default outermost frame at *THIS_ID. */ | |
301 | +} | |
302 | + | |
303 | +static struct value * | |
304 | +ia64_clone2_frame_prev_register (struct frame_info *this_frame, | |
305 | + void **this_cache, int regnum) | |
306 | +{ | |
307 | + return frame_unwind_got_register (this_frame, regnum, regnum); | |
308 | +} | |
309 | + | |
310 | +static int | |
311 | +ia64_clone2_frame_sniffer (const struct frame_unwind *self, | |
312 | + struct frame_info *this_frame, | |
313 | + void **this_prologue_cache) | |
314 | +{ | |
315 | + if (ia64_outermost_frame (this_frame)) | |
316 | + return 1; | |
317 | + | |
318 | + return 0; | |
319 | +} | |
320 | + | |
321 | +static const struct frame_unwind ia64_clone2_frame_unwind = | |
322 | +{ | |
323 | + NORMAL_FRAME, | |
324 | + &ia64_clone2_frame_this_id, | |
325 | + &ia64_clone2_frame_prev_register, | |
326 | + NULL, | |
327 | + &ia64_clone2_frame_sniffer | |
328 | +}; | |
329 | + | |
330 | /* Signal trampolines. */ | |
331 | ||
332 | static void | |
333 | @@ -4153,6 +4285,7 @@ ia64_gdbarch_init (struct gdbarch_info i | |
334 | set_gdbarch_dummy_id (gdbarch, ia64_dummy_id); | |
335 | ||
336 | set_gdbarch_unwind_pc (gdbarch, ia64_unwind_pc); | |
337 | + frame_unwind_append_unwinder (gdbarch, &ia64_clone2_frame_unwind); | |
338 | #ifdef HAVE_LIBUNWIND_IA64_H | |
339 | frame_unwind_append_unwinder (gdbarch, | |
340 | &ia64_libunwind_sigtramp_frame_unwind); | |
341 | Index: gdb-7.4.50.20120120/gdb/testsuite/gdb.threads/bt-clone-stop.c | |
342 | =================================================================== | |
3a58abaf | 343 | --- /dev/null 1970-01-01 00:00:00.000000000 +0000 |
f412e1b4 | 344 | +++ gdb-7.4.50.20120120/gdb/testsuite/gdb.threads/bt-clone-stop.c 2012-03-02 22:16:13.530569151 +0100 |
3a58abaf AM |
345 | @@ -0,0 +1,39 @@ |
346 | +/* This testcase is part of GDB, the GNU debugger. | |
347 | + | |
348 | + Copyright 2006 Free Software Foundation, Inc. | |
349 | + | |
350 | + This program is free software; you can redistribute it and/or modify | |
351 | + it under the terms of the GNU General Public License as published by | |
352 | + the Free Software Foundation; either version 2 of the License, or | |
353 | + (at your option) any later version. | |
354 | + | |
355 | + This program is distributed in the hope that it will be useful, | |
356 | + but WITHOUT ANY WARRANTY; without even the implied warranty of | |
357 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
358 | + GNU General Public License for more details. | |
359 | + | |
360 | + You should have received a copy of the GNU General Public License | |
361 | + along with this program; if not, write to the Free Software | |
362 | + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | |
363 | + MA 02110-1301, USA. */ | |
364 | + | |
365 | + | |
366 | +#include <pthread.h> | |
367 | +#include <unistd.h> | |
368 | +#include <assert.h> | |
369 | + | |
370 | + | |
371 | +void *threader (void *arg) | |
372 | +{ | |
373 | + assert (0); | |
374 | + return NULL; | |
375 | +} | |
376 | + | |
377 | +int main (void) | |
378 | +{ | |
379 | + pthread_t t1; | |
380 | + | |
381 | + pthread_create (&t1, NULL, threader, (void *) NULL); | |
382 | + for (;;) | |
383 | + pause(); | |
384 | +} | |
f412e1b4 | 385 | Index: gdb-7.4.50.20120120/gdb/testsuite/gdb.threads/bt-clone-stop.exp |
3a58abaf AM |
386 | =================================================================== |
387 | --- /dev/null 1970-01-01 00:00:00.000000000 +0000 | |
f412e1b4 | 388 | +++ gdb-7.4.50.20120120/gdb/testsuite/gdb.threads/bt-clone-stop.exp 2012-03-02 22:16:13.530569151 +0100 |
3a58abaf AM |
389 | @@ -0,0 +1,61 @@ |
390 | +# Copyright 2006 Free Software Foundation, Inc. | |
391 | + | |
392 | +# This program is free software; you can redistribute it and/or modify | |
393 | +# it under the terms of the GNU General Public License as published by | |
394 | +# the Free Software Foundation; either version 2 of the License, or | |
395 | +# (at your option) any later version. | |
396 | +# | |
397 | +# This program is distributed in the hope that it will be useful, | |
398 | +# but WITHOUT ANY WARRANTY; without even the implied warranty of | |
399 | +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
400 | +# GNU General Public License for more details. | |
401 | +# | |
402 | +# You should have received a copy of the GNU General Public License | |
403 | +# along with this program; if not, write to the Free Software | |
404 | +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
405 | + | |
406 | +# Backtraced `clone' must not have `PC == 0' as its previous frame. | |
407 | + | |
408 | +if $tracelevel then { | |
409 | + strace $tracelevel | |
410 | +} | |
411 | + | |
412 | +set testfile bt-clone-stop | |
413 | +set srcfile ${testfile}.c | |
414 | +set binfile ${objdir}/${subdir}/${testfile} | |
415 | +if { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
416 | + untested "Couldn't compile test program" | |
417 | + return -1 | |
418 | +} | |
419 | + | |
420 | +# Get things started. | |
421 | + | |
422 | +gdb_exit | |
423 | +gdb_start | |
424 | +gdb_reinitialize_dir $srcdir/$subdir | |
425 | +gdb_load ${binfile} | |
426 | + | |
427 | +# threader: threader.c:8: threader: Assertion `0' failed. | |
428 | +# Program received signal SIGABRT, Aborted. | |
429 | + | |
430 | +gdb_test "run" \ | |
431 | + "Program received signal SIGABRT.*" \ | |
432 | + "run" | |
433 | + | |
434 | +# Former gdb unwind (the first function is `clone'): | |
435 | +# #5 0x0000003421ecd62d in ?? () from /lib64/libc.so.6 | |
436 | +# #6 0x0000000000000000 in ?? () | |
437 | +# (gdb) | |
438 | +# Tested `amd64_linux_outermost_frame' functionality should omit the line `#6'. | |
439 | +# | |
440 | +# Two `-re' cases below must be in this order (1st is a subset of the 2nd one). | |
441 | +# Unhandled case below should not happen and it is fortunately handled by | |
442 | +# `amd64_linux_outermost_frame' as FAIL (and result `0x0 entry output invalid'). | |
443 | +gdb_test_multiple "bt" "0x0 entry output invalid" { | |
444 | + -re "in threader \\(.*\n#\[0-9\]* *0x0* in .*$gdb_prompt $" { | |
445 | + fail "0x0 entry found" | |
446 | + } | |
447 | + -re "in threader \\(.*$gdb_prompt $" { | |
448 | + pass "0x0 entry not found" | |
449 | + } | |
450 | +} |