glibc/SOURCES/glibc-RHEL-15696-35.patch

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2024-03-27 19:47:23 +00:00
From 55c7bcc71b84123d5d4bd2814366a6b05fcf8ebd Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Sat, 9 May 2020 12:04:23 -0700
Subject: [PATCH] x86-64: Use RDX_LP on __x86_shared_non_temporal_threshold [BZ
#25966]
Content-type: text/plain; charset=UTF-8
Since __x86_shared_non_temporal_threshold is defined as
long int __x86_shared_non_temporal_threshold;
and long int is 4 bytes for x32, use RDX_LP to compare against
__x86_shared_non_temporal_threshold in assembly code.
---
sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
index 71f5954d..673b73aa 100644
--- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
@@ -245,7 +245,7 @@ L(return):
#endif
L(movsb):
- cmpq __x86_shared_non_temporal_threshold(%rip), %rdx
+ cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP
jae L(more_8x_vec)
cmpq %rsi, %rdi
jb 1f
@@ -397,7 +397,7 @@ L(more_8x_vec):
addq %r8, %rdx
#if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc)
/* Check non-temporal store threshold. */
- cmpq __x86_shared_non_temporal_threshold(%rip), %rdx
+ cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP
ja L(large_forward)
#endif
L(loop_4x_vec_forward):
@@ -448,7 +448,7 @@ L(more_8x_vec_backward):
subq %r8, %rdx
#if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc)
/* Check non-temporal store threshold. */
- cmpq __x86_shared_non_temporal_threshold(%rip), %rdx
+ cmp __x86_shared_non_temporal_threshold(%rip), %RDX_LP
ja L(large_backward)
#endif
L(loop_4x_vec_backward):
--
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