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From: Adhemerval Zanella <azanella@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/release/2.37/master] sparc: Fix sparc64 memmove length comparison (BZ 31266) Date: Fri, 2 Feb 2024 13:26:05 +0000 (GMT) [thread overview] Message-ID: <20240202132605.9357D3857C40@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=18da90677cc412d524a00af6f5242236a5ab1cb6 commit 18da90677cc412d524a00af6f5242236a5ab1cb6 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 e38343a702..7e9a963e77 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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