1#! /usr/bin/env perl
2# Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
3#
4# Licensed under the OpenSSL license (the "License").  You may not use
5# this file except in compliance with the License.  You can obtain a copy
6# in the file LICENSE in the source distribution or at
7# https://www.openssl.org/source/license.html
8
9my $flavour = shift;
10my $output = shift;
11open STDOUT,">$output" || die "can't open $output: $!";
12
13my %GLOBALS;
14my %TYPES;
15my $dotinlocallabels=($flavour=~/linux/)?1:0;
16
17################################################################
18# directives which need special treatment on different platforms
19################################################################
20my $type = sub {
21    my ($dir,$name,$type) = @_;
22
23    $TYPES{$name} = $type;
24    if ($flavour =~ /linux/) {
25	$name =~ s|^\.||;
26	".type	$name,$type";
27    } else {
28	"";
29    }
30};
31my $globl = sub {
32    my $junk = shift;
33    my $name = shift;
34    my $global = \$GLOBALS{$name};
35    my $type = \$TYPES{$name};
36    my $ret;
37
38    $name =~ s|^\.||;
39
40    SWITCH: for ($flavour) {
41	/aix/		&& do { if (!$$type) {
42				    $$type = "\@function";
43				}
44				if ($$type =~ /function/) {
45				    $name = ".$name";
46				}
47				last;
48			      };
49	/osx/		&& do { $name = "_$name";
50				last;
51			      };
52	/linux.*(32|64(le|v2))/
53			&& do {	$ret .= ".globl	$name";
54				if (!$$type) {
55				    $ret .= "\n.type	$name,\@function";
56				    $$type = "\@function";
57				}
58				last;
59			      };
60	/linux.*64/	&& do {	$ret .= ".globl	$name";
61				if (!$$type) {
62				    $ret .= "\n.type	$name,\@function";
63				    $$type = "\@function";
64				}
65				if ($$type =~ /function/) {
66				    $ret .= "\n.section	\".opd\",\"aw\"";
67				    $ret .= "\n.align	3";
68				    $ret .= "\n$name:";
69				    $ret .= "\n.quad	.$name,.TOC.\@tocbase,0";
70				    $ret .= "\n.previous";
71				    $name = ".$name";
72				}
73				last;
74			      };
75    }
76
77    $ret = ".globl	$name" if (!$ret);
78    $$global = $name;
79    $ret;
80};
81my $text = sub {
82    my $ret = ($flavour =~ /aix/) ? ".csect\t.text[PR],7" : ".text";
83    $ret = ".abiversion	2\n".$ret	if ($flavour =~ /linux.*64(le|v2)/);
84    $ret;
85};
86my $machine = sub {
87    my $junk = shift;
88    my $arch = shift;
89    if ($flavour =~ /osx/)
90    {	$arch =~ s/\"//g;
91	$arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any");
92    }
93    ".machine	$arch";
94};
95my $size = sub {
96    if ($flavour =~ /linux/)
97    {	shift;
98	my $name = shift;
99	my $real = $GLOBALS{$name} ? \$GLOBALS{$name} : \$name;
100	my $ret  = ".size	$$real,.-$$real";
101	$name =~ s|^\.||;
102	if ($$real ne $name) {
103	    $ret .= "\n.size	$name,.-$$real";
104	}
105	$ret;
106    }
107    else
108    {	"";	}
109};
110my $asciz = sub {
111    shift;
112    my $line = join(",",@_);
113    if ($line =~ /^"(.*)"$/)
114    {	".byte	" . join(",",unpack("C*",$1),0) . "\n.align	2";	}
115    else
116    {	"";	}
117};
118my $quad = sub {
119    shift;
120    my @ret;
121    my ($hi,$lo);
122    for (@_) {
123	if (/^0x([0-9a-f]*?)([0-9a-f]{1,8})$/io)
124	{  $hi=$1?"0x$1":"0"; $lo="0x$2";  }
125	elsif (/^([0-9]+)$/o)
126	{  $hi=$1>>32; $lo=$1&0xffffffff;  } # error-prone with 32-bit perl
127	else
128	{  $hi=undef; $lo=$_; }
129
130	if (defined($hi))
131	{  push(@ret,$flavour=~/le$/o?".long\t$lo,$hi":".long\t$hi,$lo");  }
132	else
133	{  push(@ret,".quad	$lo");  }
134    }
135    join("\n",@ret);
136};
137
138################################################################
139# simplified mnemonics not handled by at least one assembler
140################################################################
141my $cmplw = sub {
142    my $f = shift;
143    my $cr = 0; $cr = shift if ($#_>1);
144    # Some out-of-date 32-bit GNU assembler just can't handle cmplw...
145    ($flavour =~ /linux.*32/) ?
146	"	.long	".sprintf "0x%x",31<<26|$cr<<23|$_[0]<<16|$_[1]<<11|64 :
147	"	cmplw	".join(',',$cr,@_);
148};
149my $bdnz = sub {
150    my $f = shift;
151    my $bo = $f=~/[\+\-]/ ? 16+9 : 16;	# optional "to be taken" hint
152    "	bc	$bo,0,".shift;
153} if ($flavour!~/linux/);
154my $bltlr = sub {
155    my $f = shift;
156    my $bo = $f=~/\-/ ? 12+2 : 12;	# optional "not to be taken" hint
157    ($flavour =~ /linux/) ?		# GNU as doesn't allow most recent hints
158	"	.long	".sprintf "0x%x",19<<26|$bo<<21|16<<1 :
159	"	bclr	$bo,0";
160};
161my $bnelr = sub {
162    my $f = shift;
163    my $bo = $f=~/\-/ ? 4+2 : 4;	# optional "not to be taken" hint
164    ($flavour =~ /linux/) ?		# GNU as doesn't allow most recent hints
165	"	.long	".sprintf "0x%x",19<<26|$bo<<21|2<<16|16<<1 :
166	"	bclr	$bo,2";
167};
168my $beqlr = sub {
169    my $f = shift;
170    my $bo = $f=~/-/ ? 12+2 : 12;	# optional "not to be taken" hint
171    ($flavour =~ /linux/) ?		# GNU as doesn't allow most recent hints
172	"	.long	".sprintf "0x%X",19<<26|$bo<<21|2<<16|16<<1 :
173	"	bclr	$bo,2";
174};
175# GNU assembler can't handle extrdi rA,rS,16,48, or when sum of last two
176# arguments is 64, with "operand out of range" error.
177my $extrdi = sub {
178    my ($f,$ra,$rs,$n,$b) = @_;
179    $b = ($b+$n)&63; $n = 64-$n;
180    "	rldicl	$ra,$rs,$b,$n";
181};
182my $vmr = sub {
183    my ($f,$vx,$vy) = @_;
184    "	vor	$vx,$vy,$vy";
185};
186
187# Some ABIs specify vrsave, special-purpose register #256, as reserved
188# for system use.
189my $no_vrsave = ($flavour =~ /aix|linux64(le|v2)/);
190my $mtspr = sub {
191    my ($f,$idx,$ra) = @_;
192    if ($idx == 256 && $no_vrsave) {
193	"	or	$ra,$ra,$ra";
194    } else {
195	"	mtspr	$idx,$ra";
196    }
197};
198my $mfspr = sub {
199    my ($f,$rd,$idx) = @_;
200    if ($idx == 256 && $no_vrsave) {
201	"	li	$rd,-1";
202    } else {
203	"	mfspr	$rd,$idx";
204    }
205};
206
207# PowerISA 2.06 stuff
208sub vsxmem_op {
209    my ($f, $vrt, $ra, $rb, $op) = @_;
210    "	.long	".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|($rb<<11)|($op*2+1);
211}
212# made-up unaligned memory reference AltiVec/VMX instructions
213my $lvx_u	= sub {	vsxmem_op(@_, 844); };	# lxvd2x
214my $stvx_u	= sub {	vsxmem_op(@_, 972); };	# stxvd2x
215my $lvdx_u	= sub {	vsxmem_op(@_, 588); };	# lxsdx
216my $stvdx_u	= sub {	vsxmem_op(@_, 716); };	# stxsdx
217my $lvx_4w	= sub { vsxmem_op(@_, 780); };	# lxvw4x
218my $stvx_4w	= sub { vsxmem_op(@_, 908); };	# stxvw4x
219my $lvx_splt	= sub { vsxmem_op(@_, 332); };	# lxvdsx
220# VSX instruction[s] masqueraded as made-up AltiVec/VMX
221my $vpermdi	= sub {				# xxpermdi
222    my ($f, $vrt, $vra, $vrb, $dm) = @_;
223    $dm = oct($dm) if ($dm =~ /^0/);
224    "	.long	".sprintf "0x%X",(60<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($dm<<8)|(10<<3)|7;
225};
226
227# PowerISA 2.07 stuff
228sub vcrypto_op {
229    my ($f, $vrt, $vra, $vrb, $op) = @_;
230    "	.long	".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|$op;
231}
232sub vfour {
233    my ($f, $vrt, $vra, $vrb, $vrc, $op) = @_;
234    "	.long	".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($vrc<<6)|$op;
235};
236my $vcipher	= sub { vcrypto_op(@_, 1288); };
237my $vcipherlast	= sub { vcrypto_op(@_, 1289); };
238my $vncipher	= sub { vcrypto_op(@_, 1352); };
239my $vncipherlast= sub { vcrypto_op(@_, 1353); };
240my $vsbox	= sub { vcrypto_op(@_, 0, 1480); };
241my $vshasigmad	= sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1730); };
242my $vshasigmaw	= sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1666); };
243my $vpmsumb	= sub { vcrypto_op(@_, 1032); };
244my $vpmsumd	= sub { vcrypto_op(@_, 1224); };
245my $vpmsubh	= sub { vcrypto_op(@_, 1096); };
246my $vpmsumw	= sub { vcrypto_op(@_, 1160); };
247# These are not really crypto, but vcrypto_op template works
248my $vaddudm	= sub { vcrypto_op(@_, 192);  };
249my $vadduqm	= sub { vcrypto_op(@_, 256);  };
250my $vmuleuw	= sub { vcrypto_op(@_, 648);  };
251my $vmulouw	= sub { vcrypto_op(@_, 136);  };
252my $vrld	= sub { vcrypto_op(@_, 196);  };
253my $vsld	= sub { vcrypto_op(@_, 1476); };
254my $vsrd	= sub { vcrypto_op(@_, 1732); };
255my $vsubudm	= sub { vcrypto_op(@_, 1216); };
256my $vaddcuq	= sub { vcrypto_op(@_, 320);  };
257my $vaddeuqm	= sub { vfour(@_,60); };
258my $vaddecuq	= sub { vfour(@_,61); };
259my $vmrgew	= sub { vfour(@_,0,1932); };
260my $vmrgow	= sub { vfour(@_,0,1676); };
261
262my $mtsle	= sub {
263    my ($f, $arg) = @_;
264    "	.long	".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2);
265};
266
267# VSX instructions masqueraded as AltiVec/VMX
268my $mtvrd	= sub {
269    my ($f, $vrt, $ra) = @_;
270    "	.long	".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|(179<<1)|1;
271};
272my $mtvrwz	= sub {
273    my ($f, $vrt, $ra) = @_;
274    "	.long	".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|(243<<1)|1;
275};
276
277# PowerISA 3.0 stuff
278my $maddhdu	= sub { vfour(@_,49); };
279my $maddld	= sub { vfour(@_,51); };
280my $darn = sub {
281    my ($f, $rt, $l) = @_;
282    "	.long	".sprintf "0x%X",(31<<26)|($rt<<21)|($l<<16)|(755<<1);
283};
284my $iseleq = sub {
285    my ($f, $rt, $ra, $rb) = @_;
286    "	.long	".sprintf "0x%X",(31<<26)|($rt<<21)|($ra<<16)|($rb<<11)|(2<<6)|30;
287};
288# VSX instruction[s] masqueraded as made-up AltiVec/VMX
289my $vspltib	= sub {				# xxspltib
290    my ($f, $vrt, $imm8) = @_;
291    $imm8 = oct($imm8) if ($imm8 =~ /^0/);
292    $imm8 &= 0xff;
293    "	.long	".sprintf "0x%X",(60<<26)|($vrt<<21)|($imm8<<11)|(360<<1)|1;
294};
295
296# PowerISA 3.0B stuff
297my $addex = sub {
298    my ($f, $rt, $ra, $rb, $cy) = @_;	# only cy==0 is specified in 3.0B
299    "	.long	".sprintf "0x%X",(31<<26)|($rt<<21)|($ra<<16)|($rb<<11)|($cy<<9)|(170<<1);
300};
301my $vmsumudm	= sub { vfour(@_,35); };
302
303while($line=<>) {
304
305    $line =~ s|[#!;].*$||;	# get rid of asm-style comments...
306    $line =~ s|/\*.*\*/||;	# ... and C-style comments...
307    $line =~ s|^\s+||;		# ... and skip white spaces in beginning...
308    $line =~ s|\s+$||;		# ... and at the end
309
310    {
311	$line =~ s|\.L(\w+)|L$1|g;	# common denominator for Locallabel
312	$line =~ s|\bL(\w+)|\.L$1|g	if ($dotinlocallabels);
313    }
314
315    {
316	$line =~ s|(^[\.\w]+)\:\s*||;
317	my $label = $1;
318	if ($label) {
319	    my $xlated = ($GLOBALS{$label} or $label);
320	    print "$xlated:";
321	    if ($flavour =~ /linux.*64(le|v2)/) {
322		if ($TYPES{$label} =~ /function/) {
323		    printf "\n.localentry	%s,0\n",$xlated;
324		}
325	    }
326	}
327    }
328
329    {
330	$line =~ s|^\s*(\.?)(\w+)([\.\+\-]?)\s*||;
331	my $c = $1; $c = "\t" if ($c eq "");
332	my $mnemonic = $2;
333	my $f = $3;
334	my $opcode = eval("\$$mnemonic");
335	$line =~ s/\b(c?[rf]|v|vs)([0-9]+)\b/$2/g if ($c ne "." and $flavour !~ /osx/);
336	if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(/,\s*/,$line)); }
337	elsif ($mnemonic)           { $line = $c.$mnemonic.$f."\t".$line; }
338    }
339
340    print $line if ($line);
341    print "\n";
342}
343
344close STDOUT or die "error closing STDOUT: $!";
345