mirror of https://github.com/openssl/openssl
114 lines
3.2 KiB
Raku
114 lines
3.2 KiB
Raku
#! /usr/bin/env perl
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# Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the Apache License 2.0 (the "License"). You may not use
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# this file except in compliance with the License. You can obtain a copy
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# in the file LICENSE in the source distribution or at
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# https://www.openssl.org/source/license.html
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# $output is the last argument if it looks like a file (it has an extension)
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# $flavour is the first argument if it doesn't look like a file
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($zero,$ra,$tp,$sp)=map("\$r$_",(0..3));
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($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$r$_",(4..11));
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($t0,$t1,$t2,$t3,$t4,$t5,$t6,$t7,$t8,$t9)=map("\$r$_",(12..21));
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($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7)=map("\$r$_",(23..30));
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($vr0,$vr1,$vr2,$vr3,$vr4,$vr5,$vr6,$vr7,$vr8,$vr9,$vr10,$vr11,$vr12,$vr13,$vr14,$vr15,$vr16,$vr17,$vr18,$vr19)=map("\$vr$_",(0..19));
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($fp)=map("\$r$_",(22));
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for (@ARGV) { $output=$_ if (/\w[\w\-]*\.\w+$/); }
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open STDOUT,">$output";
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while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {}
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open STDOUT,">$output";
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{
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my ($in_a,$in_b,$len,$m,$temp1,$temp2) = ($a0,$a1,$a2,$t0,$t1,$t2);
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$code.=<<___;
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################################################################################
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# int CRYPTO_memcmp(const void * in_a, const void * in_b, size_t len)
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################################################################################
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.text
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.balign 16
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.globl CRYPTO_memcmp
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.type CRYPTO_memcmp,\@function
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CRYPTO_memcmp:
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li.d $m,0
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beqz $len,2f # len == 0
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1:
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ld.bu $temp1,$in_a,0
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ld.bu $temp2,$in_b,0
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addi.d $in_a,$in_a,1
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addi.d $in_b,$in_b,1
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addi.d $len,$len,-1
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xor $temp1,$temp1,$temp2
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or $m,$m,$temp1
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blt $zero,$len,1b
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2:
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move $a0,$m
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jr $ra
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___
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}
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{
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my ($ptr,$len,$temp1,$temp2) = ($a0,$a1,$t0,$t1);
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$code.=<<___;
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################################################################################
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# void OPENSSL_cleanse(void *ptr, size_t len)
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################################################################################
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.text
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.balign 16
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.globl OPENSSL_cleanse
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.type OPENSSL_cleanse,\@function
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OPENSSL_cleanse:
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beqz $len,2f # len == 0, return
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srli.d $temp1,$len,4
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bnez $temp1,3f # len > 15
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1: # Store <= 15 individual bytes
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st.b $zero,$ptr,0
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addi.d $ptr,$ptr,1
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addi.d $len,$len,-1
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bnez $len,1b
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2:
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jr $ra
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3: # Store individual bytes until we are aligned
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andi $temp1,$ptr,0x7
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beqz $temp1,4f
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st.b $zero,$ptr,0
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addi.d $ptr,$ptr,1
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addi.d $len,$len,-1
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b 3b
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4: # Store aligned dwords
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li.d $temp2,8
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4:
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st.d $zero,$ptr,0
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addi.d $ptr,$ptr,8
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addi.d $len,$len,-8
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bge $len,$temp2,4b # if len>=8 loop
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bnez $len,1b # if len<8 and len != 0, store remaining bytes
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jr $ra
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___
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}
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{
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$code.=<<___;
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################################################################################
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# uint32_t OPENSSL_rdtsc(void)
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################################################################################
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.text
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.balign 16
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.globl OPENSSL_rdtsc
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.type OPENSSL_rdtsc,\@function
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OPENSSL_rdtsc:
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rdtimel.w $a0,$zero
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jr $ra
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___
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}
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$code =~ s/\`([^\`]*)\`/eval($1)/gem;
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print $code;
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close STDOUT or die "error closing STDOUT: $!";
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