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authorUlrich Drepper <drepper@redhat.com>2003-12-19 01:37:13 +0000
committerUlrich Drepper <drepper@redhat.com>2003-12-19 01:37:13 +0000
commit675620f74c6fd1233ab57c19a3b1c6279e782c09 (patch)
tree7e2b24adbcf086227800b7d6164cf0b15645647f
parent3434f152228af9fa619de254559815363f86868a (diff)
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Update.
2003-12-18 Ulrich Drepper <drepper@redhat.com> * tst-eintr1.c: Better error messages. * Makefile (tests): Add tst-eintr2. * tst-eintr2.c: New file. 2003-12-18 Jakub Jelinek <jakub@redhat.com> * Makefile (tests): Add tst-cancel21 and tst-cancelx21. (CFLAGS-tst-cancelx21.c): Set. * tst-cancel21.c: New test. * tst-cancelx21.c: New test. * unwind.c (FRAME_LEFT): Add adj argument. Subtract it from each comparison operand. (unwind_stop): Use _JMPBUF_CFA_UNWINDS_ADJ macro instead of _JMPBUF_CFA_UNWINDS. Adjust FRAME_LEFT invocations. * pt-longjmp.c: Include jmpbuf-unwind.h. (__pthread_cleanup_upto): Use _JMPBUF_UNWINDS_ADJ macro instead of _JMPBUF_UNWINDS. Adjust compared pointers. * init.c (__pthread_initialize_minimal_internal): Initialize pd->stackblock_size. * sysdeps/pthread/jmpbuf-unwind.h: Removed. * sysdeps/alpha/jmpbuf-unwind.h: New file. * sysdeps/i386/jmpbuf-unwind.h: New file. * sysdeps/powerpc/jmpbuf-unwind.h: New file. * sysdeps/s390/jmpbuf-unwind.h: New file. * sysdeps/sh/jmpbuf-unwind.h: New file. * sysdeps/sparc/sparc32/jmpbuf-unwind.h: New file. * sysdeps/x86_64/jmpbuf-unwind.h: New file. * sysdeps/ia64/jmpbuf-unwind.h: Include stdint.h. (_JMPBUF_CFA_UNWINDS): Remove. (_JMPBUF_CFA_UNWINDS_ADJ, _JMPBUF_UNWINDS_ADJ): Define. 2003-12-12 Jakub Jelinek <jakub@redhat.com> * Makefile (tests): Add tst-cancel20 and tst-cancelx20. (CFLAGS-tst-cancelx20.c): Set. * tst-cancel20.c: New test. * tst-cancelx20.c: New test.
-rw-r--r--nptl/ChangeLog42
-rw-r--r--nptl/Makefile11
-rw-r--r--nptl/init.c8
-rw-r--r--nptl/pt-longjmp.c14
-rw-r--r--nptl/sysdeps/alpha/jmpbuf-unwind.h (renamed from nptl/sysdeps/pthread/jmpbuf-unwind.h)8
-rw-r--r--nptl/sysdeps/i386/jmpbuf-unwind.h28
-rw-r--r--nptl/sysdeps/powerpc/jmpbuf-unwind.h28
-rw-r--r--nptl/sysdeps/s390/jmpbuf-unwind.h29
-rw-r--r--nptl/sysdeps/sh/jmpbuf-unwind.h28
-rw-r--r--nptl/sysdeps/sparc/sparc32/jmpbuf-unwind.h28
-rw-r--r--nptl/sysdeps/unix/sysv/linux/ia64/jmpbuf-unwind.h16
-rw-r--r--nptl/sysdeps/x86_64/jmpbuf-unwind.h28
-rw-r--r--nptl/tst-cancel20.c263
-rw-r--r--nptl/tst-cancel21.c292
-rw-r--r--nptl/tst-cancelx20.c1
-rw-r--r--nptl/tst-cancelx21.c1
-rw-r--r--nptl/tst-eintr1.c16
-rw-r--r--nptl/tst-eintr2.c118
-rw-r--r--nptl/unwind.c19
19 files changed, 953 insertions, 25 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 2d10ecc..bca4533 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,45 @@
+2003-12-18 Ulrich Drepper <drepper@redhat.com>
+
+ * tst-eintr1.c: Better error messages.
+
+ * Makefile (tests): Add tst-eintr2.
+ * tst-eintr2.c: New file.
+
+2003-12-18 Jakub Jelinek <jakub@redhat.com>
+
+ * Makefile (tests): Add tst-cancel21 and tst-cancelx21.
+ (CFLAGS-tst-cancelx21.c): Set.
+ * tst-cancel21.c: New test.
+ * tst-cancelx21.c: New test.
+
+ * unwind.c (FRAME_LEFT): Add adj argument. Subtract it from each
+ comparison operand.
+ (unwind_stop): Use _JMPBUF_CFA_UNWINDS_ADJ macro instead of
+ _JMPBUF_CFA_UNWINDS. Adjust FRAME_LEFT invocations.
+ * pt-longjmp.c: Include jmpbuf-unwind.h.
+ (__pthread_cleanup_upto): Use _JMPBUF_UNWINDS_ADJ macro instead of
+ _JMPBUF_UNWINDS. Adjust compared pointers.
+ * init.c (__pthread_initialize_minimal_internal): Initialize
+ pd->stackblock_size.
+ * sysdeps/pthread/jmpbuf-unwind.h: Removed.
+ * sysdeps/alpha/jmpbuf-unwind.h: New file.
+ * sysdeps/i386/jmpbuf-unwind.h: New file.
+ * sysdeps/powerpc/jmpbuf-unwind.h: New file.
+ * sysdeps/s390/jmpbuf-unwind.h: New file.
+ * sysdeps/sh/jmpbuf-unwind.h: New file.
+ * sysdeps/sparc/sparc32/jmpbuf-unwind.h: New file.
+ * sysdeps/x86_64/jmpbuf-unwind.h: New file.
+ * sysdeps/ia64/jmpbuf-unwind.h: Include stdint.h.
+ (_JMPBUF_CFA_UNWINDS): Remove.
+ (_JMPBUF_CFA_UNWINDS_ADJ, _JMPBUF_UNWINDS_ADJ): Define.
+
+2003-12-12 Jakub Jelinek <jakub@redhat.com>
+
+ * Makefile (tests): Add tst-cancel20 and tst-cancelx20.
+ (CFLAGS-tst-cancelx20.c): Set.
+ * tst-cancel20.c: New test.
+ * tst-cancelx20.c: New test.
+
2003-12-17 Ulrich Drepper <drepper@redhat.com>
* init.c (__pthread_initialize_minimal_internal): Don't treat
diff --git a/nptl/Makefile b/nptl/Makefile
index 8112a4d..91d43d8 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -207,7 +207,7 @@ tests = tst-attr1 tst-attr2 tst-attr3 \
tst-kill1 tst-kill2 tst-kill3 tst-kill4 tst-kill5 tst-kill6 \
tst-join1 tst-join2 tst-join3 tst-join4 tst-join5 \
tst-detach1 \
- tst-eintr1 \
+ tst-eintr1 tst-eintr2 \
tst-tsd1 tst-tsd2 tst-tsd3 tst-tsd4 \
tst-tls1 tst-tls2 \
tst-fork1 tst-fork2 tst-fork3 tst-fork4 \
@@ -215,7 +215,8 @@ tests = tst-attr1 tst-attr2 tst-attr3 \
tst-cancel1 tst-cancel2 tst-cancel3 tst-cancel4 tst-cancel5 \
tst-cancel6 tst-cancel7 tst-cancel8 tst-cancel9 tst-cancel10 \
tst-cancel11 tst-cancel12 tst-cancel13 tst-cancel14 tst-cancel15 \
- tst-cancel16 tst-cancel17 tst-cancel18 tst-cancel19 \
+ tst-cancel16 tst-cancel17 tst-cancel18 tst-cancel19 tst-cancel20 \
+ tst-cancel21 \
tst-cleanup0 tst-cleanup1 tst-cleanup2 tst-cleanup3 tst-cleanup4 \
tst-flock1 tst-flock2 \
tst-signal1 tst-signal2 tst-signal3 tst-signal4 tst-signal5 \
@@ -246,8 +247,8 @@ include ../Makeconfig
ifeq ($(have-forced-unwind),yes)
tests += tst-cancelx2 tst-cancelx3 tst-cancelx4 tst-cancelx5 \
tst-cancelx6 tst-cancelx7 tst-cancelx8 tst-cancelx9 tst-cancelx10 \
- tst-cancelx11 tst-cancelx12 tst-cancelx13 tst-cancelx14 tst-cancelx15\
- tst-cancelx16 tst-cancelx17 tst-cancelx18 \
+ tst-cancelx11 tst-cancelx12 tst-cancelx13 tst-cancelx14 tst-cancelx15 \
+ tst-cancelx16 tst-cancelx17 tst-cancelx18 tst-cancelx20 tst-cancelx21 \
tst-cleanupx0 tst-cleanupx1 tst-cleanupx2 tst-cleanupx3 tst-cleanupx4 \
tst-oncex3 tst-oncex4
endif
@@ -388,6 +389,8 @@ CFLAGS-tst-cancelx15.c += -fexceptions
CFLAGS-tst-cancelx16.c += -fexceptions
CFLAGS-tst-cancelx17.c += -fexceptions
CFLAGS-tst-cancelx18.c += -fexceptions
+CFLAGS-tst-cancelx20.c += -fexceptions -fasynchronous-unwind-tables
+CFLAGS-tst-cancelx21.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-tst-cleanupx0.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-tst-cleanupx1.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-tst-cleanupx2.c += -fexceptions
diff --git a/nptl/init.c b/nptl/init.c
index 4318552..b38b9be 100644
--- a/nptl/init.c
+++ b/nptl/init.c
@@ -217,6 +217,14 @@ __pthread_initialize_minimal_internal (void)
THREAD_SETMEM (pd, cpuclock_offset, GL(dl_cpuclock_offset));
#endif
+ /* Defined in ld.so. */
+ extern void *__libc_stack_end;
+
+ /* Set initial thread's stack block from 0 up to __libc_stack_end.
+ It will be bigger than it actually is, but for unwind.c/pt-longjmp.c
+ purposes this is good enough. */
+ THREAD_SETMEM (pd, stackblock_size, (size_t) __libc_stack_end);
+
/* Initialize the list of all running threads with the main thread. */
INIT_LIST_HEAD (&__stack_user);
list_add (&pd->list, &__stack_user);
diff --git a/nptl/pt-longjmp.c b/nptl/pt-longjmp.c
index f217e30..2022386 100644
--- a/nptl/pt-longjmp.c
+++ b/nptl/pt-longjmp.c
@@ -20,7 +20,7 @@
#include <setjmp.h>
#include <stdlib.h>
#include "pthreadP.h"
-
+#include "jmpbuf-unwind.h"
void
__pthread_cleanup_upto (__jmp_buf target, char *targetframe)
@@ -28,18 +28,24 @@ __pthread_cleanup_upto (__jmp_buf target, char *targetframe)
struct pthread *self = THREAD_SELF;
struct _pthread_cleanup_buffer *cbuf;
+ /* Adjust all pointers used in comparisons, so that top of thread's
+ stack is at the top of address space. Without that, things break
+ if stack is allocated above the main stack. */
+ uintptr_t adj = (uintptr_t) self->stackblock + self->stackblock_size;
+ uintptr_t targetframe_adj = (uintptr_t) targetframe - adj;
+
for (cbuf = THREAD_GETMEM (self, cleanup);
- cbuf != NULL && _JMPBUF_UNWINDS (target, cbuf);
+ cbuf != NULL && _JMPBUF_UNWINDS_ADJ (target, cbuf, adj);
cbuf = cbuf->__prev)
{
#if _STACK_GROWS_DOWN
- if ((char *) cbuf <= targetframe)
+ if ((uintptr_t) cbuf - adj <= targetframe_adj)
{
cbuf = NULL;
break;
}
#elif _STACK_GROWS_UP
- if ((char *) cbuf >= targetframe)
+ if ((uintptr_t) cbuf - adj >= targetframe_adj)
{
cbuf = NULL;
break;
diff --git a/nptl/sysdeps/pthread/jmpbuf-unwind.h b/nptl/sysdeps/alpha/jmpbuf-unwind.h
index fef293a..ad77816 100644
--- a/nptl/sysdeps/pthread/jmpbuf-unwind.h
+++ b/nptl/sysdeps/alpha/jmpbuf-unwind.h
@@ -18,7 +18,11 @@
02111-1307 USA. */
#include <setjmp.h>
+#include <stdint.h>
#include <unwind.h>
-#define _JMPBUF_CFA_UNWINDS(_jmpbuf, _context) \
- _JMPBUF_UNWINDS (_jmpbuf, (void *) _Unwind_GetCFA (_context))
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
diff --git a/nptl/sysdeps/i386/jmpbuf-unwind.h b/nptl/sysdeps/i386/jmpbuf-unwind.h
new file mode 100644
index 0000000..ad77816
--- /dev/null
+++ b/nptl/sysdeps/i386/jmpbuf-unwind.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
diff --git a/nptl/sysdeps/powerpc/jmpbuf-unwind.h b/nptl/sysdeps/powerpc/jmpbuf-unwind.h
new file mode 100644
index 0000000..dc8bebf
--- /dev/null
+++ b/nptl/sysdeps/powerpc/jmpbuf-unwind.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_GPR1] - (_adj))
diff --git a/nptl/sysdeps/s390/jmpbuf-unwind.h b/nptl/sysdeps/s390/jmpbuf-unwind.h
new file mode 100644
index 0000000..409408f
--- /dev/null
+++ b/nptl/sysdeps/s390/jmpbuf-unwind.h
@@ -0,0 +1,29 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) \
+ < (uintptr_t) (_jmpbuf)->__gregs[__JB_GPR15] - (_adj))
diff --git a/nptl/sysdeps/sh/jmpbuf-unwind.h b/nptl/sysdeps/sh/jmpbuf-unwind.h
new file mode 100644
index 0000000..0fae2c2
--- /dev/null
+++ b/nptl/sysdeps/sh/jmpbuf-unwind.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(jmpbuf, address, adj) \
+ ((uintptr_t) (address) - (adj) < (uintptr_t) (_jmpbuf)[0].__regs[7] - (adj))
diff --git a/nptl/sysdeps/sparc/sparc32/jmpbuf-unwind.h b/nptl/sysdeps/sparc/sparc32/jmpbuf-unwind.h
new file mode 100644
index 0000000..ad77816
--- /dev/null
+++ b/nptl/sysdeps/sparc/sparc32/jmpbuf-unwind.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/jmpbuf-unwind.h b/nptl/sysdeps/unix/sysv/linux/ia64/jmpbuf-unwind.h
index 4a526b0..90b5764 100644
--- a/nptl/sysdeps/unix/sysv/linux/ia64/jmpbuf-unwind.h
+++ b/nptl/sysdeps/unix/sysv/linux/ia64/jmpbuf-unwind.h
@@ -18,12 +18,16 @@
02111-1307 USA. */
#include <setjmp.h>
+#include <stdint.h>
#include <unwind.h>
-#define _JMPBUF_CFA_UNWINDS(_jmpbuf, _context) \
- ({ void *_cfa = (void *) _Unwind_GetCFA (_context); \
- (_cfa < (void *)(((long *)(_jmpbuf))[0]) \
- || (_cfa == (void *)(((long *)(_jmpbuf))[0]) \
- && (void *) _Unwind_GetBSP (_context) \
- >= (void *)(((long *)(_jmpbuf))[17]))); \
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ ({ uintptr_t _cfa = (uintptr_t) _Unwind_GetCFA (_context) - (_adj); \
+ (_cfa < (uintptr_t)(((long *)(_jmpbuf))[0]) - (_adj) \
+ || (_cfa == (uintptr_t)(((long *)(_jmpbuf))[0]) - (_adj) \
+ && (uintptr_t) _Unwind_GetBSP (_context) - (_adj) \
+ >= (uintptr_t)(((long *)(_jmpbuf))[17]) - (_adj))); \
})
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t)(_address) - (_adj) < (uintptr_t)(((long *)_jmpbuf)[0]) - (_adj))
diff --git a/nptl/sysdeps/x86_64/jmpbuf-unwind.h b/nptl/sysdeps/x86_64/jmpbuf-unwind.h
new file mode 100644
index 0000000..f0a22e7
--- /dev/null
+++ b/nptl/sysdeps/x86_64/jmpbuf-unwind.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_RSP] - (_adj))
diff --git a/nptl/tst-cancel20.c b/nptl/tst-cancel20.c
new file mode 100644
index 0000000..8155c0e
--- /dev/null
+++ b/nptl/tst-cancel20.c
@@ -0,0 +1,263 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+static int fd[4];
+static pthread_barrier_t b;
+volatile int in_sh_body;
+unsigned long cleanups;
+
+static void
+cl (void *arg)
+{
+ cleanups = (cleanups << 4) | (long) arg;
+}
+
+
+static void __attribute__((noinline))
+sh_body (void)
+{
+ char c;
+
+ pthread_cleanup_push (cl, (void *) 1L);
+
+ in_sh_body = 1;
+ if (read (fd[2], &c, 1) == 1)
+ {
+ puts ("read succeeded");
+ exit (1);
+ }
+
+ pthread_cleanup_pop (0);
+}
+
+
+static void
+sh (int sig)
+{
+ pthread_cleanup_push (cl, (void *) 2L);
+ sh_body ();
+ in_sh_body = 0;
+
+ pthread_cleanup_pop (0);
+}
+
+
+static void __attribute__((noinline))
+tf_body (void)
+{
+ char c;
+
+ pthread_cleanup_push (cl, (void *) 3L);
+
+ int r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("child thread: barrier_wait failed");
+ exit (1);
+ }
+
+ if (read (fd[0], &c, 1) == 1)
+ {
+ puts ("read succeeded");
+ exit (1);
+ }
+
+ read (fd[0], &c, 1);
+
+ pthread_cleanup_pop (0);
+}
+
+
+static void *
+tf (void *arg)
+{
+ pthread_cleanup_push (cl, (void *) 4L);
+ tf_body ();
+ pthread_cleanup_pop (0);
+ return NULL;
+}
+
+
+static int
+do_one_test (void)
+{
+ cleanups = 0;
+ if (pipe (fd) != 0 || pipe (fd + 2) != 0)
+ {
+ puts ("pipe failed");
+ return 1;
+ }
+
+ pthread_t th;
+ if (pthread_create (&th, NULL, tf, NULL) != 0)
+ {
+ puts ("create failed");
+ return 1;
+ }
+
+ int r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("parent thread: barrier_wait failed");
+ return 1;
+ }
+
+ sleep (1);
+
+ r = pthread_kill (th, SIGHUP);
+ if (r)
+ {
+ errno = r;
+ printf ("pthread_kill failed %m\n");
+ return 1;
+ }
+
+ while (in_sh_body == 0)
+ sleep (1);
+
+ if (pthread_cancel (th) != 0)
+ {
+ puts ("cancel failed");
+ return 1;
+ }
+
+ /* This will cause the read in the child to return. */
+ close (fd[0]);
+ close (fd[1]);
+ close (fd[2]);
+ close (fd[3]);
+
+ void *ret;
+ if (pthread_join (th, &ret) != 0)
+ {
+ puts ("join failed");
+ return 1;
+ }
+
+ if (ret != PTHREAD_CANCELED)
+ {
+ puts ("result is wrong");
+ return 1;
+ }
+
+ if (cleanups != 0x1234L)
+ {
+ printf ("called cleanups %lx\n", cleanups);
+ return 1;
+ }
+
+ return 0;
+}
+
+
+static int
+do_test (void)
+{
+ stack_t ss;
+ ss.ss_sp = malloc (2 * SIGSTKSZ);
+ if (ss.ss_sp == NULL)
+ {
+ puts ("failed to allocate alternate stack");
+ return 1;
+ }
+ ss.ss_flags = 0;
+ ss.ss_size = 2 * SIGSTKSZ;
+ if (sigaltstack (&ss, NULL) < 0)
+ {
+ printf ("sigaltstack failed %m\n");
+ return 1;
+ }
+
+ if (pthread_barrier_init (&b, NULL, 2) != 0)
+ {
+ puts ("barrier_init failed");
+ return 1;
+ }
+
+ struct sigaction sa;
+ sa.sa_handler = sh;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = 0;
+
+ if (sigaction (SIGHUP, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ puts ("sa_flags = 0 test");
+ if (do_one_test ())
+ return 1;
+
+ sa.sa_handler = sh;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = SA_ONSTACK;
+
+ if (sigaction (SIGHUP, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ puts ("sa_flags = SA_ONSTACK test");
+ if (do_one_test ())
+ return 1;
+
+ sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = SA_SIGINFO;
+
+ if (sigaction (SIGHUP, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ puts ("sa_flags = SA_SIGINFO test");
+ if (do_one_test ())
+ return 1;
+
+ sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
+
+ if (sigaction (SIGHUP, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ puts ("sa_flags = SA_SIGINFO|SA_ONSTACK test");
+ if (do_one_test ())
+ return 1;
+
+ return 0;
+}
+
+#define TIMEOUT 40
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/nptl/tst-cancel21.c b/nptl/tst-cancel21.c
new file mode 100644
index 0000000..c40d87b
--- /dev/null
+++ b/nptl/tst-cancel21.c
@@ -0,0 +1,292 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+
+static int fd[4];
+static pthread_barrier_t b;
+volatile int in_sh_body;
+unsigned long cleanups;
+
+static void
+cl (void *arg)
+{
+ cleanups = (cleanups << 4) | (long) arg;
+}
+
+
+static void __attribute__((noinline))
+sh_body (void)
+{
+ char c;
+
+ pthread_cleanup_push (cl, (void *) 1L);
+
+ in_sh_body = 1;
+ if (read (fd[2], &c, 1) == 1)
+ {
+ puts ("read succeeded");
+ exit (1);
+ }
+
+ pthread_cleanup_pop (0);
+}
+
+
+static void
+sh (int sig)
+{
+ pthread_cleanup_push (cl, (void *) 2L);
+ sh_body ();
+ in_sh_body = 0;
+
+ pthread_cleanup_pop (0);
+}
+
+
+static void __attribute__((noinline))
+tf_body (void)
+{
+ char c;
+
+ pthread_cleanup_push (cl, (void *) 3L);
+
+ int r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("child thread: barrier_wait failed");
+ exit (1);
+ }
+
+ if (read (fd[0], &c, 1) == 1)
+ {
+ puts ("read succeeded");
+ exit (1);
+ }
+
+ read (fd[0], &c, 1);
+
+ pthread_cleanup_pop (0);
+}
+
+
+static void *
+tf (void *arg)
+{
+ pthread_t th = (pthread_t) arg;
+
+ int r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("parent thread: barrier_wait failed");
+ exit (1);
+ }
+
+ sleep (1);
+
+ r = pthread_kill (th, SIGHUP);
+ if (r)
+ {
+ errno = r;
+ printf ("pthread_kill failed %m\n");
+ exit (1);
+ }
+
+ while (in_sh_body == 0)
+ sleep (1);
+
+ if (pthread_cancel (th) != 0)
+ {
+ puts ("cancel failed");
+ exit (1);
+ }
+
+ /* This will cause the read in the initial thread to return. */
+ close (fd[0]);
+ close (fd[1]);
+ close (fd[2]);
+ close (fd[3]);
+
+ void *ret;
+ if (pthread_join (th, &ret) != 0)
+ {
+ puts ("join failed");
+ exit (1);
+ }
+
+ if (ret != PTHREAD_CANCELED)
+ {
+ puts ("result is wrong");
+ exit (1);
+ }
+
+ if (cleanups != 0x1234L)
+ {
+ printf ("called cleanups %lx\n", cleanups);
+ exit (1);
+ }
+
+ if (pthread_barrier_destroy (&b))
+ {
+ puts ("barrier destroy failed");
+ exit (1);
+ }
+
+ exit (0);
+}
+
+
+static int
+do_one_test (void)
+{
+ pid_t pid = fork ();
+
+ if (pid == -1)
+ {
+ printf ("fork failed: %m\n");
+ return 1;
+ }
+
+ if (pid)
+ {
+ int status;
+ if (waitpid (pid, &status, 0) < 0)
+ {
+ printf ("waitpid failed %m\n");
+ return 1;
+ }
+
+ return !WIFEXITED (status) || WEXITSTATUS (status);
+ }
+
+ if (pthread_barrier_init (&b, NULL, 2) != 0)
+ {
+ puts ("barrier_init failed");
+ exit (1);
+ }
+
+ cleanups = 0;
+ if (pipe (fd) != 0 || pipe (fd + 2) != 0)
+ {
+ puts ("pipe failed");
+ exit (1);
+ }
+
+ pthread_t th;
+ if (pthread_create (&th, NULL, tf, (void *) pthread_self ()) != 0)
+ {
+ puts ("create failed");
+ exit (1);
+ }
+
+ pthread_cleanup_push (cl, (void *) 4L);
+ tf_body ();
+ pthread_cleanup_pop (0);
+ exit (1);
+}
+
+
+static int
+do_test (void)
+{
+ stack_t ss;
+ ss.ss_sp = malloc (2 * SIGSTKSZ);
+ if (ss.ss_sp == NULL)
+ {
+ puts ("failed to allocate alternate stack");
+ return 1;
+ }
+ ss.ss_flags = 0;
+ ss.ss_size = 2 * SIGSTKSZ;
+ if (sigaltstack (&ss, NULL) < 0)
+ {
+ printf ("sigaltstack failed %m\n");
+ return 1;
+ }
+
+ struct sigaction sa;
+ sa.sa_handler = sh;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = 0;
+
+ if (sigaction (SIGHUP, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ puts ("sa_flags = 0 test");
+ if (do_one_test ())
+ return 1;
+
+ sa.sa_handler = sh;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = SA_ONSTACK;
+
+ if (sigaction (SIGHUP, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ puts ("sa_flags = SA_ONSTACK test");
+ if (do_one_test ())
+ return 1;
+
+ sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = SA_SIGINFO;
+
+ if (sigaction (SIGHUP, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ puts ("sa_flags = SA_SIGINFO test");
+ if (do_one_test ())
+ return 1;
+
+ sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
+
+ if (sigaction (SIGHUP, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ puts ("sa_flags = SA_SIGINFO|SA_ONSTACK test");
+ if (do_one_test ())
+ return 1;
+
+ return 0;
+}
+
+#define TIMEOUT 40
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/nptl/tst-cancelx20.c b/nptl/tst-cancelx20.c
new file mode 100644
index 0000000..6bd8637
--- /dev/null
+++ b/nptl/tst-cancelx20.c
@@ -0,0 +1 @@
+#include "tst-cancel20.c"
diff --git a/nptl/tst-cancelx21.c b/nptl/tst-cancelx21.c
new file mode 100644
index 0000000..2a01061
--- /dev/null
+++ b/nptl/tst-cancelx21.c
@@ -0,0 +1 @@
+#include "tst-cancel21.c"
diff --git a/nptl/tst-eintr1.c b/nptl/tst-eintr1.c
index 72e4397..41ec250 100644
--- a/nptl/tst-eintr1.c
+++ b/nptl/tst-eintr1.c
@@ -22,6 +22,7 @@
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include "eintr.c"
@@ -49,7 +50,9 @@ tf1 (void *arg)
exit (1);
}
- puts ("pthread_create failed");
+ char buf[100];
+ printf ("tf1: pthread_create failed: %s\n",
+ strerror_r (e, buf, sizeof (buf)));
exit (1);
}
@@ -62,7 +65,9 @@ tf1 (void *arg)
exit (1);
}
- puts ("join failed");
+ char buf[100];
+ printf ("tf1: pthread_join failed: %s\n",
+ strerror_r (e, buf, sizeof (buf)));
exit (1);
}
}
@@ -78,9 +83,12 @@ do_test (void)
for (i = 0; i < 10; ++i)
{
pthread_t th;
- if (pthread_create (&th, NULL, tf1, NULL) != 0)
+ int e = pthread_create (&th, NULL, tf1, NULL);
+ if (e != 0)
{
- puts ("pthread_create failed");
+ char buf[100];
+ printf ("main: pthread_create failed: %s\n",
+ strerror_r (e, buf, sizeof (buf)));
exit (1);
}
}
diff --git a/nptl/tst-eintr2.c b/nptl/tst-eintr2.c
new file mode 100644
index 0000000..00b2ecd
--- /dev/null
+++ b/nptl/tst-eintr2.c
@@ -0,0 +1,118 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+
+#include "eintr.c"
+
+
+static pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER;
+
+
+static void *
+tf1 (void *arg)
+{
+ struct timespec ts;
+ struct timeval tv;
+
+ gettimeofday (&tv, NULL);
+ TIMEVAL_TO_TIMESPEC (&tv, &ts);
+ ts.tv_sec += 10000;
+
+ /* This call must never return. */
+ int e = pthread_mutex_timedlock (&m1, &ts);
+ char buf[100];
+ printf ("tf1: mutex_lock returned: %s\n",
+ strerror_r (e, buf, sizeof (buf)));
+
+ exit (1);
+}
+
+
+static void *
+tf2 (void *arg)
+{
+ while (1)
+ {
+ int e = pthread_mutex_lock (&m2);
+ if (e != 0)
+ {
+ puts ("tf2: mutex_lock failed");
+ exit (1);
+ }
+ e = pthread_mutex_unlock (&m2);
+ if (e != 0)
+ {
+ puts ("tf2: mutex_unlock failed");
+ exit (1);
+ }
+ struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 };
+ nanosleep (&ts, NULL);
+ }
+}
+
+
+static int
+do_test (void)
+{
+ if (pthread_mutex_lock (&m1) != 0)
+ {
+ puts ("mutex_lock failed");
+ exit (1);
+ }
+
+ setup_eintr (SIGUSR1);
+
+ pthread_t th;
+ char buf[100];
+ int e = pthread_create (&th, NULL, tf1, NULL);
+ if (e != 0)
+ {
+ printf ("main: 1st pthread_create failed: %s\n",
+ strerror_r (e, buf, sizeof (buf)));
+ exit (1);
+ }
+
+ e = pthread_create (&th, NULL, tf2, NULL);
+ if (e != 0)
+ {
+ printf ("main: 2nd pthread_create failed: %s\n",
+ strerror_r (e, buf, sizeof (buf)));
+ exit (1);
+ }
+
+ /* This call must never return. */
+ e = pthread_mutex_lock (&m1);
+ printf ("main: mutex_lock returned: %s\n",
+ strerror_r (e, buf, sizeof (buf)));
+
+ return 0;
+}
+
+#define EXPECTED_SIGNAL SIGALRM
+#define TIMEOUT 3
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/nptl/unwind.c b/nptl/unwind.c
index 8013b5a..f72c338 100644
--- a/nptl/unwind.c
+++ b/nptl/unwind.c
@@ -28,9 +28,11 @@
#ifdef HAVE_FORCED_UNWIND
#ifdef _STACK_GROWS_DOWN
-# define FRAME_LEFT(frame, other) ((char *) frame >= (char *) other)
+# define FRAME_LEFT(frame, other, adj) \
+ ((uintptr_t) frame - adj >= (uintptr_t) other - adj)
#elif _STACK_GROWS_UP
-# define FRAME_LEFT(frame, other) ((char *) frame <= (char *) other)
+# define FRAME_LEFT(frame, other, adj) \
+ ((uintptr_t) frame - adj <= (uintptr_t) other - adj)
#else
# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
#endif
@@ -45,6 +47,11 @@ unwind_stop (int version, _Unwind_Action actions,
struct pthread *self = THREAD_SELF;
struct _pthread_cleanup_buffer *curp = THREAD_GETMEM (self, cleanup);
int do_longjump = 0;
+
+ /* Adjust all pointers used in comparisons, so that top of thread's
+ stack is at the top of address space. Without that, things break
+ if stack is allocated above the main stack. */
+ uintptr_t adj = (uintptr_t) self->stackblock + self->stackblock_size;
/* Do longjmp if we're at "end of stack", aka "end of unwind data".
We assume there are only C frame without unwind data in between
@@ -52,7 +59,8 @@ unwind_stop (int version, _Unwind_Action actions,
of a function is NOT within it's stack frame; it's the SP of the
previous frame. */
if ((actions & _UA_END_OF_STACK)
- || ! _JMPBUF_CFA_UNWINDS (buf->cancel_jmp_buf[0].jmp_buf, context))
+ || ! _JMPBUF_CFA_UNWINDS_ADJ (buf->cancel_jmp_buf[0].jmp_buf, context,
+ adj))
do_longjump = 1;
if (__builtin_expect (curp != NULL, 0))
@@ -63,7 +71,7 @@ unwind_stop (int version, _Unwind_Action actions,
struct _pthread_cleanup_buffer *oldp = buf->priv.data.cleanup;
void *cfa = (void *) _Unwind_GetCFA (context);
- if (curp != oldp && (do_longjump || FRAME_LEFT (cfa, curp)))
+ if (curp != oldp && (do_longjump || FRAME_LEFT (cfa, curp, adj)))
{
do
{
@@ -76,7 +84,8 @@ unwind_stop (int version, _Unwind_Action actions,
/* To the next. */
curp = nextp;
}
- while (curp != oldp && (do_longjump || FRAME_LEFT (cfa, curp)));
+ while (curp != oldp
+ && (do_longjump || FRAME_LEFT (cfa, curp, adj)));
/* Mark the current element as handled. */
THREAD_SETMEM (self, cleanup, curp);