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 --git a/sysdeps/sparc/sparc64/memmove.S b/sysdeps/sparc/sparc64/memmove.S
index 8d46f2cd4ef4f3e9866291c69067674716bc5484..77466841602f1b95ca3b2bdec2c5a18e9500f36c 100644 (file)
--- 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  */