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| author | John David Anglin <danglin@gcc.gnu.org> | 2017-08-08 20:57:31 -0400 |
|---|---|---|
| committer | John David Anglin <danglin@gcc.gnu.org> | 2017-08-08 20:57:31 -0400 |
| commit | efaa6fe53ee6f28ea022c93fd38725ee8df50bd4 (patch) | |
| tree | fb4549e1ce7a0968917dfb7043da176fc6448575 | |
| parent | 05dcf1ea88ff65052e8b8079519429e424d6f2d8 (diff) | |
| download | glibc-origin/release/2.25/master.tar.gz | |
hppa: Avoid clobbering registers in __longjmp.origin/release/2.25/master
[BZ #21049]
* sysdeps/hppa/__longjmp.c (__longjmp): Move call to CHECK_SP up
to avoid clobbering r26.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/hppa/__longjmp.c | 9 |
2 files changed, 11 insertions, 4 deletions
@@ -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 a7eefc7ad6..2fedb1d738 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 (;;); } |