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Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-64')
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/__makecontext_ret.S10
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/clone.S4
2 files changed, 6 insertions, 8 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/__makecontext_ret.S b/sysdeps/unix/sysv/linux/s390/s390-64/__makecontext_ret.S
index 16901638b5..2dcd43ff6e 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/__makecontext_ret.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/__makecontext_ret.S
@@ -17,15 +17,9 @@
 
 #include <sysdep.h>
 
-/* We do not want .eh_frame info so that __makecontext_ret stops unwinding
-   if backtrace was called within a context created by makecontext. (There
-   is also no .eh_frame info for _start or thread_start.)  */
-#undef cfi_startproc
-#define cfi_startproc
-#undef cfi_endproc
-#define cfi_endproc
-
 ENTRY(__makecontext_ret)
+	/* Mark r14 as undefined in order to stop unwinding here!  */
+	cfi_undefined (r14)
 	basr	%r14,%r7
 	ltgr	%r8,%r8			/* Check whether uc_link is 0.  */
 	jz	1f
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
index daf8a58326..8b0cc7e019 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
@@ -55,12 +55,16 @@ error:
 PSEUDO_END (__clone)
 
 thread_start:
+	cfi_startproc
+	/* Mark r14 as undefined in order to stop unwinding here!  */
+	cfi_undefined (r14)
 	/* fn is in gpr 1, arg in gpr 0 */
 	lgr	%r2,%r0		/* set first parameter to void *arg */
 	aghi	%r15,-160	/* make room on the stack for the save area */
 	xc	0(8,%r15),0(%r15)
 	basr	%r14,%r1	/* jump to fn */
 	DO_CALL	(exit, 1)
+	cfi_endproc
 
 libc_hidden_def (__clone)
 weak_alias (__clone, clone)