-#!/usr/bin/env perl
+#! /usr/bin/env perl
+# Copyright 2010-2020 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (the "License"). You may not use
+# this file except in compliance with the License. You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
-$output = pop;
-open STDOUT,">$stdout";
+
+$output = pop and open STDOUT,">$output";
print <<'___';
.text
bne $17,.Little
.Ldone: ret ($26)
.end OPENSSL_cleanse
+
+.globl CRYPTO_memcmp
+.ent CRYPTO_memcmp
+CRYPTO_memcmp:
+ .frame $30,0,$26
+ .prologue 0
+ xor $0,$0,$0
+ beq $18,.Lno_data
+
+ xor $1,$1,$1
+ nop
+.Loop_cmp:
+ ldq_u $2,0($16)
+ subq $18,1,$18
+ ldq_u $3,0($17)
+ extbl $2,$16,$2
+ lda $16,1($16)
+ extbl $3,$17,$3
+ lda $17,1($17)
+ xor $3,$2,$2
+ or $2,$0,$0
+ bne $18,.Loop_cmp
+
+ subq $31,$0,$0
+ srl $0,63,$0
+.Lno_data:
+ ret ($26)
+.end CRYPTO_memcmp
___
{
my ($out,$cnt,$max)=("\$16","\$17","\$18");
___
}
-close STDOUT;
+close STDOUT or die "error closing STDOUT: $!";