crypto/armcap.c: detect hardware-assisted SHA512 support.
[openssl.git] / crypto / arm64cpuid.pl
index c0af608..68734f5 100755 (executable)
@@ -63,6 +63,7 @@ _armv8_sha256_probe:
        sha256su0       v0.4s, v0.4s
        ret
 .size  _armv8_sha256_probe,.-_armv8_sha256_probe
+
 .globl _armv8_pmull_probe
 .type  _armv8_pmull_probe,%function
 _armv8_pmull_probe:
@@ -70,6 +71,13 @@ _armv8_pmull_probe:
        ret
 .size  _armv8_pmull_probe,.-_armv8_pmull_probe
 
+.globl _armv8_sha512_probe
+.type  _armv8_sha512_probe,%function
+_armv8_sha512_probe:
+       .long   0xcec08000      // sha512su0    v0.2d,v0.2d
+       ret
+.size  _armv8_sha512_probe,.-_armv8_sha512_probe
+
 .globl OPENSSL_cleanse
 .type  OPENSSL_cleanse,%function
 .align 5
@@ -100,6 +108,26 @@ OPENSSL_cleanse:
        cbnz    x1,.Little      // len!=0?
        ret
 .size  OPENSSL_cleanse,.-OPENSSL_cleanse
+
+.globl CRYPTO_memcmp
+.type  CRYPTO_memcmp,%function
+.align 4
+CRYPTO_memcmp:
+       eor     w3,w3,w3
+       cbz     x2,.Lno_data    // len==0?
+.Loop_cmp:
+       ldrb    w4,[x0],#1
+       ldrb    w5,[x1],#1
+       eor     w4,w4,w5
+       orr     w3,w3,w4
+       subs    x2,x2,#1
+       b.ne    .Loop_cmp
+
+.Lno_data:
+       neg     w0,w3
+       lsr     w0,w0,#31
+       ret
+.size  CRYPTO_memcmp,.-CRYPTO_memcmp
 ___
 
 print $code;