Add assembly CRYPTO_memcmp.

[openssl.git] / crypto / ppccpuid.pl

diff --git a/crypto/ppccpuid.pl b/crypto/ppccpuid.pl
index 8f603e972f1275ec18f0371d3644a2420db74a17..9d1cada4dc4c9177552f1abdd2bd4151c1e73296 100755 (executable)
--- a/crypto/ppccpuid.pl
+++ b/crypto/ppccpuid.pl
@@ -177,6 +177,32 @@ Laligned:
        .byte   0,12,0x14,0,0,0,2,0
        .long   0
 .size  .OPENSSL_cleanse,.-.OPENSSL_cleanse
+
+globl  .CRYPTO_memcmp
+.align 4
+.CRYPTO_memcmp:
+       $CMPLI  r5,0
+       li      r0,0
+       beq     Lno_data
+       mtctr   r5
+Loop_cmp:
+       lbz     r6,0(r3)
+       addi    r3,r3,1
+       lbz     r7,0(r4)
+       addi    r4,r4,1
+       xor     r6,r6,r7
+       or      r0,r0,r6
+       bdnz    Loop_cmp
+
+Lno_data:
+       li      r3,0
+       sub     r3,r3,r0
+       extrwi  r3,r3,1,0
+       blr
+       .long   0
+       .byte   0,12,0x14,0,0,0,3,0
+       .long   0
+.size  .CRYPTO_memcmp,.-.CRYPTO_memcmp
 ___
 {
 my ($out,$cnt,$max)=("r3","r4","r5");