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* [glibc/release/2.36/master] sparc: Fix sparc64 memmove length comparison (BZ 31266)
@ 2024-02-02 13:25 Adhemerval Zanella
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From: Adhemerval Zanella @ 2024-02-02 13:25 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f4171ba5e5a772217ed0ebb80701fe1698407252
commit f4171ba5e5a772217ed0ebb80701fe1698407252
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Jan 18 10:52:18 2024 -0300
sparc: Fix sparc64 memmove length comparison (BZ 31266)
The small counts copy bytes comparsion should be unsigned (as the
memmove size argument). It fixes string/tst-memmove-overflow on
sparcv9, where the input size triggers an invalid code path.
Checked on sparc64-linux-gnu and sparcv9-linux-gnu.
(cherry picked from commit 926a4bdbb5fc8955570208b5571b2d04c6ffbd1d)
Diff:
---
sysdeps/sparc/sparc64/memmove.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sysdeps/sparc/sparc64/memmove.S b/sysdeps/sparc/sparc64/memmove.S
index 8d46f2cd4e..7746684160 100644
--- a/sysdeps/sparc/sparc64/memmove.S
+++ b/sysdeps/sparc/sparc64/memmove.S
@@ -38,7 +38,7 @@ ENTRY(memmove)
/*
* normal, copy forwards
*/
-2: ble %XCC, .Ldbytecp
+2: bleu %XCC, .Ldbytecp
andcc %o1, 3, %o5 /* is src word aligned */
bz,pn %icc, .Laldst
cmp %o5, 2 /* is src half-word aligned */
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2024-02-02 13:25 [glibc/release/2.36/master] sparc: Fix sparc64 memmove length comparison (BZ 31266) Adhemerval Zanella
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