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use testl, instead of andl, to check __x86_string_control to

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avoid updating __x86_string_control
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liqingqing_1229 2021-10-28 20:59:51 +08:00
parent 59f33bf0f8
commit a085006b9e
2 changed files with 44 additions and 1 deletions
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7
glibc.spec
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@ -65,7 +65,7 @@
############################################################################## ##############################################################################
Name: glibc Name: glibc
Version: 2.34 Version: 2.34
Release: 17 Release: 18
Summary: The GNU libc libraries Summary: The GNU libc libraries
License: %{all_license} License: %{all_license}
URL: http://www.gnu.org/software/glibc/ URL: http://www.gnu.org/software/glibc/
@ -117,6 +117,7 @@ Patch30: x86-64-Optimize-load-of-all-bits-set-into-ZMM-regist.patch
Patch31: mtrace-Fix-output-with-PIE-and-ASLR-BZ-22716.patch Patch31: mtrace-Fix-output-with-PIE-and-ASLR-BZ-22716.patch
Patch32: rtld-copy-terminating-null-in-tunables_strdup-bug-28.patch Patch32: rtld-copy-terminating-null-in-tunables_strdup-bug-28.patch
Patch33: Use-__executable_start-as-the-lowest-address-for-pro.patch Patch33: Use-__executable_start-as-the-lowest-address-for-pro.patch
Patch34: x86-64-Use-testl-to-check-__x86_string_control.patch
#Patch9000: turn-REP_STOSB_THRESHOLD-from-2k-to-1M.patch #Patch9000: turn-REP_STOSB_THRESHOLD-from-2k-to-1M.patch
Patch9001: delete-no-hard-link-to-avoid-all_language-package-to.patch Patch9001: delete-no-hard-link-to-avoid-all_language-package-to.patch
@ -1306,6 +1307,10 @@ fi
%endif %endif
%changelog %changelog
* Thu Oct 28 2021 Qingqing Li<liqingqing3@huawei.com> - 2.34-18
- use testl instead of andl to check __x86_string_control to
avoid updating __x86_string_control
* Tue Oct 26 2021 Yang Yanchao<yangyanchao6@huawei.com> - 2.34-17 * Tue Oct 26 2021 Yang Yanchao<yangyanchao6@huawei.com> - 2.34-17
- Show more debugging information during testsuite - Show more debugging information during testsuite

38
x86-64-Use-testl-to-check-__x86_string_control.patch Normal file
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@ -0,0 +1,38 @@
From 3c8b9879cab6d41787bc5b14c1748f62fd6d0e5f Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Sat, 28 Aug 2021 06:10:38 -0700
Subject: [PATCH] x86-64: Use testl to check __x86_string_control
Use testl, instead of andl, to check __x86_string_control to avoid
updating __x86_string_control.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
---
sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
index 9f02624..abde843 100644
--- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
@@ -325,7 +325,7 @@ L(movsb):
/* Avoid slow backward REP MOVSB. */
jb L(more_8x_vec_backward)
# if AVOID_SHORT_DISTANCE_REP_MOVSB
- andl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
+ testl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
jz 3f
movq %rdi, %rcx
subq %rsi, %rcx
@@ -333,7 +333,7 @@ L(movsb):
# endif
1:
# if AVOID_SHORT_DISTANCE_REP_MOVSB
- andl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
+ testl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
jz 3f
movq %rsi, %rcx
subq %rdi, %rcx
--
1.8.3.1