2011-03-28  Andreas Schwab  <schwab@linux-m68k.org>

	* sysdeps/powerpc/powerpc32/power4/strncmp.S: Don't read past
	differing bytes.
	* sysdeps/powerpc/powerpc64/power4/strncmp.S: Likewise.

diff --git a/sysdeps/powerpc/powerpc32/power4/strncmp.S b/sysdeps/powerpc/powerpc32/power4/strncmp.S
index fc0835e..f5d47af 100644
--- a/sysdeps/powerpc/powerpc32/power4/strncmp.S
+++ b/sysdeps/powerpc/powerpc32/power4/strncmp.S
@@ -139,30 +139,31 @@ L(u1):
 	bdz	L(u4)
 	cmpw	rWORD1, rWORD2
 	beq-	cr1, L(u4)
+	bne-	L(u4)
 	lbzu    rWORD3, 1(rSTR1)
 	lbzu	rWORD4, 1(rSTR2)
-	bne-	L(u4)
 	cmpwi	cr1, rWORD3, 0
 	bdz	L(u3)
 	cmpw	rWORD3, rWORD4
 	beq-    cr1, L(u3)
+	bne-    L(u3)
 	lbzu	rWORD1, 1(rSTR1)
 	lbzu	rWORD2, 1(rSTR2)
-	bne-    L(u3)
 	cmpwi	cr1, rWORD1, 0
 	bdz	L(u4)
 	cmpw	rWORD1, rWORD2
 	beq-	cr1, L(u4)
+	bne-	L(u4)
 	lbzu	rWORD3, 1(rSTR1)
 	lbzu	rWORD4, 1(rSTR2)
-	bne-	L(u4)
 	cmpwi	cr1, rWORD3, 0
 	bdz	L(u3)
 	cmpw	rWORD3, rWORD4
 	beq-    cr1, L(u3)
+	bne-	L(u3)
 	lbzu	rWORD1, 1(rSTR1)
 	lbzu	rWORD2, 1(rSTR2)
-	beq+    L(u1)
+	b       L(u1)
 
 L(u3):  sub     rRTN, rWORD3, rWORD4
         blr
diff --git a/sysdeps/powerpc/powerpc64/power4/strncmp.S b/sysdeps/powerpc/powerpc64/power4/strncmp.S
index 7a1665d..94ae85b 100644
--- a/sysdeps/powerpc/powerpc64/power4/strncmp.S
+++ b/sysdeps/powerpc/powerpc64/power4/strncmp.S
@@ -143,30 +143,31 @@ L(u1):
 	bdz	L(u4)
 	cmpd	rWORD1, rWORD2
 	beq-	cr1, L(u4)
+	bne-	L(u4)
 	lbzu    rWORD3, 1(rSTR1)
 	lbzu	rWORD4, 1(rSTR2)
-	bne-	L(u4)
 	cmpdi	cr1, rWORD3, 0
 	bdz	L(u3)
 	cmpd	rWORD3, rWORD4
 	beq-    cr1, L(u3)
+	bne-    L(u3)
 	lbzu	rWORD1, 1(rSTR1)
 	lbzu	rWORD2, 1(rSTR2)
-	bne-    L(u3)
 	cmpdi	cr1, rWORD1, 0
 	bdz	L(u4)
 	cmpd	rWORD1, rWORD2
 	beq-	cr1, L(u4)
+	bne-	L(u4)
 	lbzu	rWORD3, 1(rSTR1)
 	lbzu	rWORD4, 1(rSTR2)
-	bne-	L(u4)
 	cmpdi	cr1, rWORD3, 0
 	bdz	L(u3)
 	cmpd	rWORD3, rWORD4
 	beq-    cr1, L(u3)
+	bne-    L(u3)
 	lbzu	rWORD1, 1(rSTR1)
 	lbzu	rWORD2, 1(rSTR2)
-	beq+    L(u1)
+	b       L(u1)
 
 L(u3):  sub     rRTN, rWORD3, rWORD4
         blr