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GNU C Library master sources branch origin/release/2.25/master created. glibc-2.25-31-gefaa6fe
- From: danglin at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 9 Aug 2017 01:01:55 -0000
- Subject: GNU C Library master sources branch origin/release/2.25/master created. glibc-2.25-31-gefaa6fe
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at efaa6fe53ee6f28ea022c93fd38725ee8df50bd4 (commit)
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=efaa6fe53ee6f28ea022c93fd38725ee8df50bd4
commit efaa6fe53ee6f28ea022c93fd38725ee8df50bd4
Author: John David Anglin <danglin@gcc.gnu.org>
Date: Tue Aug 8 20:57:31 2017 -0400
hppa: Avoid clobbering registers in __longjmp.
[BZ #21049]
* sysdeps/hppa/__longjmp.c (__longjmp): Move call to CHECK_SP up
to avoid clobbering r26.
diff --git a/ChangeLog b/ChangeLog
index 35b2d94..16b1f25 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-08-08 Helge Deller <deller@gmx.de>
+
+ [BZ #21049]
+ * sysdeps/hppa/__longjmp.c (__longjmp): Move call to CHECK_SP up
+ to avoid clobbering r26.
+
2017-08-06 H.J. Lu <hongjiu.lu@intel.com>
[BZ #21871]
diff --git a/sysdeps/hppa/__longjmp.c b/sysdeps/hppa/__longjmp.c
index a7eefc7..2fedb1d 100644
--- a/sysdeps/hppa/__longjmp.c
+++ b/sysdeps/hppa/__longjmp.c
@@ -24,15 +24,15 @@
void
__longjmp (__jmp_buf env, int val)
{
+#ifdef CHECK_SP
+ CHECK_SP (env[0].__jmp_buf.__sp);
+#endif
+
/* We must use one of the non-callee saves registers
for env. */
register unsigned long r26 asm ("r26") = (unsigned long)&env[0];
register unsigned long r25 asm ("r25") = (unsigned long)(val == 0 ? 1 : val);
-#ifdef CHECK_SP
- CHECK_SP (env[0].__jmp_buf.__sp);
-#endif
-
asm volatile(
/* Set return value. */
"copy %0, %%r28\n\t"
@@ -79,6 +79,7 @@ __longjmp (__jmp_buf env, int val)
: /* No outputs. */
: "r" (r25), "r" (r26)
: /* No point in clobbers. */ );
+
/* Avoid `volatile function does return' warnings. */
for (;;);
}
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