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-rw-r--r--crypto/perlasm/x86asm.pl334
1 files changed, 214 insertions, 120 deletions
diff --git a/crypto/perlasm/x86asm.pl b/crypto/perlasm/x86asm.pl
index cf2aee40e..34244c1ce 100644
--- a/crypto/perlasm/x86asm.pl
+++ b/crypto/perlasm/x86asm.pl
@@ -1,130 +1,224 @@
-#!/usr/local/bin/perl
+#!/usr/bin/env perl
# require 'x86asm.pl';
-# &asm_init("cpp","des-586.pl");
-# XXX
-# XXX
-# main'asm_finish
-
-sub main'asm_finish
- {
- &file_end();
- &asm_finish_cpp() if $cpp;
- print &asm_get_output();
- }
-
-sub main'asm_init
- {
- ($type,$fn,$i386)=@_;
- $filename=$fn;
-
- $elf=$cpp=$coff=$aout=$win32=$netware=$mwerks=0;
- if ( ($type eq "elf"))
- { $elf=1; require "x86unix.pl"; }
- elsif ( ($type eq "a.out"))
- { $aout=1; require "x86unix.pl"; }
- elsif ( ($type eq "coff" or $type eq "gaswin"))
- { $coff=1; require "x86unix.pl"; }
- elsif ( ($type eq "cpp"))
- { $cpp=1; require "x86unix.pl"; }
- elsif ( ($type eq "win32"))
- { $win32=1; require "x86ms.pl"; }
- elsif ( ($type eq "win32n"))
- { $win32=1; require "x86nasm.pl"; }
- elsif ( ($type eq "nw-nasm"))
- { $netware=1; require "x86nasm.pl"; }
- elsif ( ($type eq "nw-mwasm"))
- { $netware=1; $mwerks=1; require "x86nasm.pl"; }
- else
- {
- print STDERR <<"EOF";
+# &asm_init(<flavor>,"des-586.pl"[,$i386only]);
+# &function_begin("foo");
+# ...
+# &function_end("foo");
+# &asm_finish
+
+$out=();
+$i386=0;
+
+# AUTOLOAD is this context has quite unpleasant side effect, namely
+# that typos in function calls effectively go to assembler output,
+# but on the pros side we don't have to implement one subroutine per
+# each opcode...
+sub ::AUTOLOAD
+{ my $opcode = $AUTOLOAD;
+
+ die "more than 4 arguments passed to $opcode" if ($#_>3);
+
+ $opcode =~ s/.*:://;
+ if ($opcode =~ /^push/) { $stack+=4; }
+ elsif ($opcode =~ /^pop/) { $stack-=4; }
+
+ &generic($opcode,@_) or die "undefined subroutine \&$AUTOLOAD";
+}
+
+sub ::emit
+{ my $opcode=shift;
+
+ if ($#_==-1) { push(@out,"\t$opcode\n"); }
+ else { push(@out,"\t$opcode\t".join(',',@_)."\n"); }
+}
+
+sub ::LB
+{ $_[0] =~ m/^e?([a-d])x$/o or die "$_[0] does not have a 'low byte'";
+ $1."l";
+}
+sub ::HB
+{ $_[0] =~ m/^e?([a-d])x$/o or die "$_[0] does not have a 'high byte'";
+ $1."h";
+}
+sub ::stack_push{ my $num=$_[0]*4; $stack+=$num; &sub("esp",$num); }
+sub ::stack_pop { my $num=$_[0]*4; $stack-=$num; &add("esp",$num); }
+sub ::blindpop { &pop($_[0]); $stack+=4; }
+sub ::wparam { &DWP($stack+4*$_[0],"esp"); }
+sub ::swtmp { &DWP(4*$_[0],"esp"); }
+
+sub ::bswap
+{ if ($i386) # emulate bswap for i386
+ { &comment("bswap @_");
+ &xchg(&HB(@_),&LB(@_));
+ &ror (@_,16);
+ &xchg(&HB(@_),&LB(@_));
+ }
+ else
+ { &generic("bswap",@_); }
+}
+# These are made-up opcodes introduced over the years essentially
+# by ignorance, just alias them to real ones...
+sub ::movb { &mov(@_); }
+sub ::xorb { &xor(@_); }
+sub ::rotl { &rol(@_); }
+sub ::rotr { &ror(@_); }
+sub ::exch { &xchg(@_); }
+sub ::halt { &hlt; }
+sub ::movz { &movzx(@_); }
+sub ::pushf { &pushfd; }
+sub ::popf { &popfd; }
+
+# 3 argument instructions
+sub ::movq
+{ my($p1,$p2,$optimize)=@_;
+
+ if ($optimize && $p1=~/^mm[0-7]$/ && $p2=~/^mm[0-7]$/)
+ # movq between mmx registers can sink Intel CPUs
+ { &::pshufw($p1,$p2,0xe4); }
+ else
+ { &::generic("movq",@_); }
+}
+
+# AESNI extenstion
+sub ::aeskeygenassist
+{ my($dst,$src,$imm)=@_;
+ if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
+ { &data_byte(0x66,0x0f,0x3a,0xdf,0xc0|($1<<3)|$2,$imm); }
+}
+sub ::aescommon
+{ my($opcodelet,$dst,$src)=@_;
+ if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
+ { &data_byte(0x66,0x0f,0x38,$opcodelet,0xc0|($1<<3)|$2); }
+}
+sub ::aesimc { ::aescommon(0xdb,@_); }
+sub ::aesenc { ::aescommon(0xdc,@_); }
+sub ::aesenclast { ::aescommon(0xdd,@_); }
+sub ::aesdec { ::aescommon(0xde,@_); }
+sub ::aesdeclast { ::aescommon(0xdf,@_); }
+
+# label management
+$lbdecor="L"; # local label decoration, set by package
+$label="000";
+
+sub ::islabel # see is argument is a known label
+{ my $i;
+ foreach $i (values %label) { return $i if ($i eq $_[0]); }
+ $label{$_[0]}; # can be undef
+}
+
+sub ::label # instantiate a function-scope label
+{ if (!defined($label{$_[0]}))
+ { $label{$_[0]}="${lbdecor}${label}${_[0]}"; $label++; }
+ $label{$_[0]};
+}
+
+sub ::LABEL # instantiate a file-scope label
+{ $label{$_[0]}=$_[1] if (!defined($label{$_[0]}));
+ $label{$_[0]};
+}
+
+sub ::static_label { &::LABEL($_[0],$lbdecor.$_[0]); }
+
+sub ::set_label_B { push(@out,"@_:\n"); }
+sub ::set_label
+{ my $label=&::label($_[0]);
+ &::align($_[1]) if ($_[1]>1);
+ &::set_label_B($label);
+ $label;
+}
+
+sub ::wipe_labels # wipes function-scope labels
+{ foreach $i (keys %label)
+ { delete $label{$i} if ($label{$i} =~ /^\Q${lbdecor}\E[0-9]{3}/); }
+}
+
+# subroutine management
+sub ::function_begin
+{ &function_begin_B(@_);
+ $stack=4;
+ &push("ebp");
+ &push("ebx");
+ &push("esi");
+ &push("edi");
+}
+
+sub ::function_end
+{ &pop("edi");
+ &pop("esi");
+ &pop("ebx");
+ &pop("ebp");
+ &ret();
+ &function_end_B(@_);
+ $stack=0;
+ &wipe_labels();
+}
+
+sub ::function_end_A
+{ &pop("edi");
+ &pop("esi");
+ &pop("ebx");
+ &pop("ebp");
+ &ret();
+ $stack+=16; # readjust esp as if we didn't pop anything
+}
+
+sub ::asciz
+{ my @str=unpack("C*",shift);
+ push @str,0;
+ while ($#str>15) {
+ &data_byte(@str[0..15]);
+ foreach (0..15) { shift @str; }
+ }
+ &data_byte(@str) if (@str);
+}
+
+sub ::asm_finish
+{ &file_end();
+ print @out;
+}
+
+sub ::asm_init
+{ my ($type,$fn,$cpu)=@_;
+
+ $filename=$fn;
+ $i386=$cpu;
+
+ $elf=$cpp=$coff=$aout=$macosx=$win32=$netware=$mwerks=0;
+ if (($type eq "elf"))
+ { $elf=1; require "x86gas.pl"; }
+ elsif (($type eq "a\.out"))
+ { $aout=1; require "x86gas.pl"; }
+ elsif (($type eq "coff" or $type eq "gaswin"))
+ { $coff=1; require "x86gas.pl"; }
+ elsif (($type eq "win32n"))
+ { $win32=1; require "x86nasm.pl"; }
+ elsif (($type eq "nw-nasm"))
+ { $netware=1; require "x86nasm.pl"; }
+ #elsif (($type eq "nw-mwasm"))
+ #{ $netware=1; $mwerks=1; require "x86nasm.pl"; }
+ elsif (($type eq "win32"))
+ { $win32=1; require "x86masm.pl"; }
+ elsif (($type eq "macosx"))
+ { $aout=1; $macosx=1; require "x86gas.pl"; }
+ else
+ { print STDERR <<"EOF";
Pick one target type from
elf - Linux, FreeBSD, Solaris x86, etc.
- a.out - OpenBSD, DJGPP, etc.
+ a.out - DJGPP, elder OpenBSD, etc.
coff - GAS/COFF such as Win32 targets
- win32 - Windows 95/Windows NT
win32n - Windows 95/Windows NT NASM format
nw-nasm - NetWare NASM format
- nw-mwasm- NetWare Metrowerks Assembler
+ macosx - Mac OS X
EOF
- exit(1);
- }
-
- $pic=0;
- for (@ARGV) { $pic=1 if (/\-[fK]PIC/i); }
-
- &asm_init_output();
-
-&comment("Don't even think of reading this code");
-&comment("It was automatically generated by $filename");
-&comment("Which is a perl program used to generate the x86 assember for");
-&comment("any of ELF, a.out, COFF, Win32, ...");
-&comment("eric <eay\@cryptsoft.com>");
-&comment("");
-
- $filename =~ s/\.pl$//;
- &file($filename);
- }
-
-sub asm_finish_cpp
- {
- return unless $cpp;
-
- local($tmp,$i);
- foreach $i (&get_labels())
- {
- $tmp.="#define $i _$i\n";
- }
- print <<"EOF";
-/* Run the C pre-processor over this file with one of the following defined
- * ELF - elf object files,
- * OUT - a.out object files,
- * BSDI - BSDI style a.out object files
- * SOL - Solaris style elf
- */
-
-#define TYPE(a,b) .type a,b
-#define SIZE(a,b) .size a,b
-
-#if defined(OUT) || (defined(BSDI) && !defined(ELF))
-$tmp
-#endif
-
-#ifdef OUT
-#define OK 1
-#define ALIGN 4
-#if defined(__CYGWIN__) || defined(__DJGPP__)
-#undef SIZE
-#undef TYPE
-#define SIZE(a,b)
-#define TYPE(a,b) .def a; .scl 2; .type 32; .endef
-#endif /* __CYGWIN || __DJGPP */
-#endif
-
-#if defined(BSDI) && !defined(ELF)
-#define OK 1
-#define ALIGN 4
-#undef SIZE
-#undef TYPE
-#define SIZE(a,b)
-#define TYPE(a,b)
-#endif
-
-#if defined(ELF) || defined(SOL)
-#define OK 1
-#define ALIGN 16
-#endif
-
-#ifndef OK
-You need to define one of
-ELF - elf systems - linux-elf, NetBSD and DG-UX
-OUT - a.out systems - linux-a.out and FreeBSD
-SOL - solaris systems, which are elf with strange comment lines
-BSDI - a.out with a very primative version of as.
-#endif
-
-/* Let the Assembler begin :-) */
-EOF
- }
+ exit(1);
+ }
+
+ $pic=0;
+ for (@ARGV) { $pic=1 if (/\-[fK]PIC/i); }
+
+ $filename =~ s/\.pl$//;
+ &file($filename);
+}
1;
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