diff options
| author | Stefan Liebler <stli@linux.ibm.com> | 2024-02-22 15:03:27 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2024-02-27 11:08:08 +0100 |
| commit | e0910f1d3278f05439fb434ee528fc9be1b6bd5e (patch) | |
| tree | 5f35f75e69506b5867bc3900e0e190561ce197bb /sysdeps/unix/sysv/linux/s390/s390-64/clone.S | |
| parent | d0724994de40934c552f1f68de89053848a44927 (diff) | |
| download | glibc-e0910f1d3278f05439fb434ee528fc9be1b6bd5e.tar.gz glibc-e0910f1d3278f05439fb434ee528fc9be1b6bd5e.tar.xz glibc-e0910f1d3278f05439fb434ee528fc9be1b6bd5e.zip | |
S390: Do not clobber r7 in clone [BZ #31402]
Starting with commit e57d8fc97b90127de4ed3e3a9cdf663667580935 "S390: Always use svc 0" clone clobbers the call-saved register r7 in error case: function or stack is NULL. This patch restores the saved registers also in the error case. Furthermore the existing test misc/tst-clone is extended to check all error cases and that clone does not clobber registers in this error case. (cherry picked from commit 02782fd12849b6673cb5c2728cb750e8ec295aa3)
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-64/clone.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-64/clone.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S index 4eb104be71..c552a6b8de 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S +++ b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S @@ -54,6 +54,7 @@ ENTRY(__clone) br %r14 error: lghi %r2,-EINVAL + lmg %r6,%r7,48(%r15) /* Restore registers. */ jg SYSCALL_ERROR_LABEL PSEUDO_END (__clone) |