forked from pool/glibc
Andreas Schwab
81fec1e654
- strncpy-power9-vsx.patch: powerpc: Fix VSX register number on __strncpy_power9 (BZ #29197) - nptl-cleanup-async-restore.patch: nptl: Fix __libc_cleanup_pop_restore asynchronous restore (bsc#1200093, BZ #29214) OBS-URL: https://build.opensuse.org/request/show/981453 OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=616
49 lines
1.6 KiB
Diff
49 lines
1.6 KiB
Diff
From 0a1572b8bb880a63d50a63b2afe4bb67704ac23e Mon Sep 17 00:00:00 2001
|
|
From: Matheus Castanho <msc@linux.ibm.com>
|
|
Date: Tue, 7 Jun 2022 10:27:26 -0300
|
|
Subject: [PATCH] powerpc: Fix VSX register number on __strncpy_power9 [BZ
|
|
#29197]
|
|
|
|
__strncpy_power9 initializes VR 18 with zeroes to be used throughout the
|
|
code, including when zero-padding the destination string. However, the
|
|
v18 reference was mistakenly being used for stxv and stxvl, which take a
|
|
VSX vector as operand. The code ended up using the uninitialized VSR 18
|
|
register by mistake.
|
|
|
|
Both occurrences have been changed to use the proper VSX number for VR 18
|
|
(i.e. VSR 50).
|
|
|
|
Tested on powerpc, powerpc64 and powerpc64le.
|
|
|
|
Signed-off-by: Kewen Lin <linkw@gcc.gnu.org>
|
|
(cherry picked from commit 0218463dd8265ed937622f88ac68c7d984fe0cfc)
|
|
---
|
|
sysdeps/powerpc/powerpc64/le/power9/strncpy.S | 4 ++--
|
|
1 file changed, 2 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/sysdeps/powerpc/powerpc64/le/power9/strncpy.S b/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
|
|
index ae23161316..deb94671cc 100644
|
|
--- a/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
|
|
+++ b/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
|
|
@@ -352,7 +352,7 @@ L(zero_padding_loop):
|
|
cmpldi cr6,r5,16 /* Check if length was reached. */
|
|
ble cr6,L(zero_padding_end)
|
|
|
|
- stxv v18,0(r11)
|
|
+ stxv 32+v18,0(r11)
|
|
addi r11,r11,16
|
|
addi r5,r5,-16
|
|
|
|
@@ -360,7 +360,7 @@ L(zero_padding_loop):
|
|
|
|
L(zero_padding_end):
|
|
sldi r10,r5,56 /* stxvl wants size in top 8 bits */
|
|
- stxvl v18,r11,r10 /* Partial store */
|
|
+ stxvl 32+v18,r11,r10 /* Partial store */
|
|
blr
|
|
|
|
.align 4
|
|
--
|
|
2.35.3
|
|
|