aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorH.J. Lu <hjl.tools@gmail.com>2012-05-22 05:34:36 -0700
committerH.J. Lu <hjl.tools@gmail.com>2012-05-22 05:34:36 -0700
commit0e44a77e481e18b56ef5bd2354fc97a267487551 (patch)
tree757d36a8ea239514e64dad61907846f24e2903bf
parent5e1a27a96de16ad0cd67a81e25741790b32e2c25 (diff)
downloadglibc-0e44a77e481e18b56ef5bd2354fc97a267487551.tar
glibc-0e44a77e481e18b56ef5bd2354fc97a267487551.tar.gz
glibc-0e44a77e481e18b56ef5bd2354fc97a267487551.tar.bz2
glibc-0e44a77e481e18b56ef5bd2354fc97a267487551.zip
Use "neg %eax" in x86_64 SYSCALL_SET_ERRNO
-rw-r--r--ChangeLog3
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/sysdep.h10
2 files changed, 7 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog
index f1921def94..200c726994 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
2012-05-22 H.J. Lu <hongjiu.lu@intel.com>
+ * sysdeps/unix/sysv/linux/x86_64/sysdep.h (SYSCALL_SET_ERRNO):
+ Use "neg %eax".
+
* sysdeps/unix/sysv/linux/bits/resource.h (RLIM_INFINITY): Use
__rlim_t cast.
(struct rusage): Use anonymous union to pad each field to
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index 3f5bdd2ac3..396345e8b7 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -115,9 +115,8 @@
# if defined PIC && defined RTLD_PRIVATE_ERRNO
# define SYSCALL_SET_ERRNO \
lea rtld_errno(%rip), %RCX_LP; \
- xorl %edx, %edx; \
- sub %RAX_LP, %RDX_LP; \
- movl %edx, (%rcx)
+ neg %eax; \
+ movl %eax, (%rcx)
# else
# ifndef NOT_IN_libc
# define SYSCALL_ERROR_ERRNO __libc_errno
@@ -126,9 +125,8 @@
# endif
# define SYSCALL_SET_ERRNO \
movq SYSCALL_ERROR_ERRNO@GOTTPOFF(%rip), %rcx;\
- xorl %edx, %edx; \
- sub %RAX_LP, %RDX_LP; \
- movl %edx, %fs:(%rcx)
+ neg %eax; \
+ movl %eax, %fs:(%rcx);
# endif
# ifndef PIC