+2019-01-13 Jim Wilson <jimw@sifive.com>
+
+ [BZ #24040]
+ * elf/Makefile (CFLAGS-tst-unwind-main.c): Add -DUSE_PTHREADS=0.
+ * elf/tst-unwind-main.c: If USE_PTHEADS, include pthread.h and error.h
+ (func): New.
+ (main): If USE_PTHREADS, call pthread_create to run func. Otherwise
+ call func directly.
+ * nptl/Makefile (tests): Add tst-unwind-thread.
+ (CFLAGS-tst-unwind-thread.c): Define.
+ * nptl/tst-unwind-thread.c: New file.
+ * sysdeps/unix/sysv/linux/riscv/clone.S (__thread_start): Mark ra
+ as undefined.
+
2019-02-13 Joseph Myers <joseph@codesourcery.com>
* iconvdata/cns11643.h (ucs4_to_cns11643): Adjust fall-through
$(objpfx)tst-unwind-ctor: $(objpfx)tst-unwind-ctor-lib.so
-CFLAGS-tst-unwind-main.c += -funwind-tables
+CFLAGS-tst-unwind-main.c += -funwind-tables -DUSE_PTHREADS=0
#include <unistd.h>
#include <support/test-driver.h>
+#if USE_PTHREADS
+# include <pthread.h>
+# include <error.h>
+#endif
+
static _Unwind_Reason_Code
callback (struct _Unwind_Context *ctx, void *arg)
{
return _URC_NO_REASON;
}
-int
-main (void)
+static void *
+func (void *a)
{
/* Arrange for this test to be killed if _Unwind_Backtrace runs into an
endless loop. We cannot use the test driver because the complete
call chain needs to be compiled with -funwind-tables so that
- _Unwind_Backtrace is able to reach _start. */
+ _Unwind_Backtrace is able to reach the start routine. */
alarm (DEFAULT_TIMEOUT);
_Unwind_Backtrace (callback, 0);
+ return a;
+}
+
+int
+main (void)
+{
+#if USE_PTHREADS
+ pthread_t thr;
+ int rc = pthread_create (&thr, NULL, &func, NULL);
+ if (rc)
+ error (1, rc, "pthread_create");
+ rc = pthread_join (thr, NULL);
+ if (rc)
+ error (1, rc, "pthread_join");
+#else
+ func (NULL);
+#endif
}
tst-cnd-timedwait tst-thrd-detach tst-mtx-basic tst-thrd-sleep \
tst-mtx-recursive tst-tss-basic tst-call-once tst-mtx-timedlock \
tst-rwlock-pwn \
- tst-rwlock-tryrdlock-stall tst-rwlock-trywrlock-stall
+ tst-rwlock-tryrdlock-stall tst-rwlock-trywrlock-stall \
+ tst-unwind-thread
tests-internal := tst-rwlock19 tst-rwlock20 \
tst-sem11 tst-sem12 tst-sem13 \
$(objpfx)tst-audit-threads.out: $(objpfx)tst-audit-threads-mod1.so
tst-audit-threads-ENV = LD_AUDIT=$(objpfx)tst-audit-threads-mod1.so
+CFLAGS-tst-unwind-thread.c += -funwind-tables
+
# The tests here better do not run in parallel
ifneq ($(filter %tests,$(MAKECMDGOALS)),)
.NOTPARALLEL:
--- /dev/null
+#define USE_PTHREADS 1
+#include "../elf/tst-unwind-main.c"
ENTRY (__thread_start)
L (thread_start):
+ /* Terminate call stack by noting ra is undefined. Use a dummy
+ .cfi_label to force starting the FDE. */
+ .cfi_label .Ldummy
+ cfi_undefined (ra)
+
/* Restore the arg for user's function. */
REG_L a1,0(sp) /* Function pointer. */
REG_L a0,SZREG(sp) /* Argument pointer. */