INSTALL.md: Restore $ as command prompt indicator

[oweals/openssl.git] / crypto / bn / asm / armv4-gf2m.pl

diff --git a/crypto/bn/asm/armv4-gf2m.pl b/crypto/bn/asm/armv4-gf2m.pl
index 227581e10c7fed7e1f9aac97f3fe31bd2350d384..d380c89f1f2b68508226b85631e0668f44642e2e 100644 (file)
--- a/crypto/bn/asm/armv4-gf2m.pl
+++ b/crypto/bn/asm/armv4-gf2m.pl
@@ -1,4 +1,11 @@
-#!/usr/bin/env perl
+#! /usr/bin/env perl
+# Copyright 2011-2020 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
+
 #
 # ====================================================================
 # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
@@ -29,12 +36,13 @@
 #
 # Câmara, D.; Gouvêa, C. P. L.; López, J. & Dahab, R.: Fast Software
 # Polynomial Multiplication on ARM Processors using the NEON Engine.
-# 
+#
 # http://conradoplg.cryptoland.net/files/2010/12/mocrysen13.pdf
 
-$flavour = shift;
-if ($flavour=~/^\w[\w\-]*\.\w+$/) { $output=$flavour; undef $flavour; }
-else { while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} }
+# $output is the last argument if it looks like a file (it has an extension)
+# $flavour is the first argument if it doesn't look like a file
+$output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
+$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
 
 if ($flavour && $flavour ne "void") {
     $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
@@ -42,21 +50,23 @@ if ($flavour && $flavour ne "void") {
     ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
     die "can't locate arm-xlate.pl";
 
-    open STDOUT,"| \"$^X\" $xlate $flavour $output";
+    open STDOUT,"| \"$^X\" $xlate $flavour \"$output\""
+        or die "can't call $xlate: $1";
 } else {
-    open STDOUT,">$output";
+    $output and open STDOUT,">$output";
 }
 
 $code=<<___;
 #include "arm_arch.h"
 
-.text
-#if defined(__thumb2__) && !defined(__APPLE__)
+#if defined(__thumb2__)
 .syntax        unified
 .thumb
 #else
 .code  32
 #endif
+
+.text
 ___
 ################
 # private interface to mul_1x1_ialu
@@ -169,11 +179,13 @@ bn_GF2m_mul_2x2:
 #if __ARM_MAX_ARCH__>=7
        stmdb   sp!,{r10,lr}
        ldr     r12,.LOPENSSL_armcap
+# if !defined(_WIN32)
        adr     r10,.LOPENSSL_armcap
        ldr     r12,[r12,r10]
-#ifdef __APPLE__
+# endif
+# if defined(__APPLE__) || defined(_WIN32)
        ldr     r12,[r12]
-#endif
+# endif
        tst     r12,#ARMV7_NEON
        itt     ne
        ldrne   r10,[sp],#8
@@ -303,7 +315,11 @@ $code.=<<___;
 #if __ARM_MAX_ARCH__>=7
 .align 5
 .LOPENSSL_armcap:
+# ifdef        _WIN32
+.word  OPENSSL_armcap_P
+# else
 .word  OPENSSL_armcap_P-.
+# endif
 #endif
 .asciz "GF(2^m) Multiplication for ARMv4/NEON, CRYPTOGAMS by <appro\@openssl.org>"
 .align 5
@@ -322,4 +338,4 @@ foreach (split("\n",$code)) {
 
        print $_,"\n";
 }
-close STDOUT;   # enforce flush
+close STDOUT or die "error closing STDOUT: $!";   # enforce flush