2.5-18.1

[thirdparty/glibc.git] / sysdeps / powerpc / powerpc64 / strncmp.S

diff --git a/sysdeps/powerpc/powerpc64/strncmp.S b/sysdeps/powerpc/powerpc64/strncmp.S
index 04bdc2f6069fc23ccaaa67f08e75517d5efbef3f..34479e2e91168f55b5e0a15e0eefd9b002641b85 100644 (file)
--- a/sysdeps/powerpc/powerpc64/strncmp.S
+++ b/sysdeps/powerpc/powerpc64/strncmp.S
@@ -48,6 +48,7 @@ EALIGN (BP_SYM(strncmp), 4, 0)
        lis     r7F7F, 0x7f7f
        dcbt    0,rSTR2
        clrldi. rTMP, rTMP, 61
+       cmpldi  cr1, rN, 0
        lis     rFEFE, -0x101
        bne     L(unaligned)
 /* We are doubleword alligned so set up for two loops.  first a double word
@@ -55,7 +56,8 @@ EALIGN (BP_SYM(strncmp), 4, 0)
        srdi.   rTMP, rN, 3
        clrldi  rN, rN, 61
        addi    rFEFE, rFEFE, -0x101
-       addi    r7F7F, r7F7F, 0x7f7f    
+       addi    r7F7F, r7F7F, 0x7f7f
+       cmpldi  cr1, rN, 0      
        beq     L(unaligned)
 
        mtctr   rTMP    /* Power4 wants mtctr 1st in dispatch group.  */
@@ -126,16 +128,19 @@ L(tail):
        addi    rSTR1, rSTR1, 8
        bne-    cr1, L(different)
        addi    rSTR2, rSTR2, 8
+       cmpldi  cr1, rN, 0
 L(unaligned):
        mtctr   rN      /* Power4 wants mtctr 1st in dispatch group */
-       cmpdi   rN,0
-       lbz     rWORD1, 0(rSTR1)
-       lbz     rWORD2, 0(rSTR2)
-       bgt     L(u1)
+       bgt     cr1, L(uz)
 L(ux):
        li      rRTN, 0
        blr
-
+       .align 4
+L(uz):
+       lbz     rWORD1, 0(rSTR1)
+       lbz     rWORD2, 0(rSTR2)
+       nop
+       b       L(u1)
 L(u0):
        lbzu    rWORD2, 1(rSTR2)
 L(u1):