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authorArne Schwabe <arne@rfc2549.org>2012-04-16 19:21:14 +0200
committerArne Schwabe <arne@rfc2549.org>2012-04-16 19:21:14 +0200
commit3e4d8f433239c40311037616b1b8833a06651ae0 (patch)
tree98ab7fce0d011d34677b0beb762d389cb5c39199 /openssl/crypto/perlasm/x86masm.pl
Initial import
Diffstat (limited to 'openssl/crypto/perlasm/x86masm.pl')
-rw-r--r--openssl/crypto/perlasm/x86masm.pl184
1 files changed, 184 insertions, 0 deletions
diff --git a/openssl/crypto/perlasm/x86masm.pl b/openssl/crypto/perlasm/x86masm.pl
new file mode 100644
index 00000000..3d50e4a7
--- /dev/null
+++ b/openssl/crypto/perlasm/x86masm.pl
@@ -0,0 +1,184 @@
+#!/usr/bin/env perl
+
+package x86masm;
+
+*out=\@::out;
+
+$::lbdecor="\$L"; # local label decoration
+$nmdecor="_"; # external name decoration
+
+$initseg="";
+$segment="";
+
+sub ::generic
+{ my ($opcode,@arg)=@_;
+
+ # fix hexadecimal constants
+ for (@arg) { s/0x([0-9a-f]+)/0$1h/oi; }
+
+ if ($opcode !~ /movq/)
+ { # fix xmm references
+ $arg[0] =~ s/\b[A-Z]+WORD\s+PTR/XMMWORD PTR/i if ($arg[1]=~/\bxmm[0-7]\b/i);
+ $arg[1] =~ s/\b[A-Z]+WORD\s+PTR/XMMWORD PTR/i if ($arg[0]=~/\bxmm[0-7]\b/i);
+ }
+
+ &::emit($opcode,@arg);
+ 1;
+}
+#
+# opcodes not covered by ::generic above, mostly inconsistent namings...
+#
+sub ::call { &::emit("call",(&::islabel($_[0]) or "$nmdecor$_[0]")); }
+sub ::call_ptr { &::emit("call",@_); }
+sub ::jmp_ptr { &::emit("jmp",@_); }
+
+sub get_mem
+{ my($size,$addr,$reg1,$reg2,$idx)=@_;
+ my($post,$ret);
+
+ $ret .= "$size PTR " if ($size ne "");
+
+ $addr =~ s/^\s+//;
+ # prepend global references with optional underscore
+ $addr =~ s/^([^\+\-0-9][^\+\-]*)/&::islabel($1) or "$nmdecor$1"/ige;
+ # put address arithmetic expression in parenthesis
+ $addr="($addr)" if ($addr =~ /^.+[\-\+].+$/);
+
+ if (($addr ne "") && ($addr ne 0))
+ { if ($addr !~ /^-/) { $ret .= "$addr"; }
+ else { $post=$addr; }
+ }
+ $ret .= "[";
+
+ if ($reg2 ne "")
+ { $idx!=0 or $idx=1;
+ $ret .= "$reg2*$idx";
+ $ret .= "+$reg1" if ($reg1 ne "");
+ }
+ else
+ { $ret .= "$reg1"; }
+
+ $ret .= "$post]";
+ $ret =~ s/\+\]/]/; # in case $addr was the only argument
+ $ret =~ s/\[\s*\]//;
+
+ $ret;
+}
+sub ::BP { &get_mem("BYTE",@_); }
+sub ::DWP { &get_mem("DWORD",@_); }
+sub ::QWP { &get_mem("QWORD",@_); }
+sub ::BC { "@_"; }
+sub ::DWC { "@_"; }
+
+sub ::file
+{ my $tmp=<<___;
+TITLE $_[0].asm
+IF \@Version LT 800
+ECHO MASM version 8.00 or later is strongly recommended.
+ENDIF
+.486
+.MODEL FLAT
+OPTION DOTNAME
+IF \@Version LT 800
+.text\$ SEGMENT PAGE 'CODE'
+ELSE
+.text\$ SEGMENT ALIGN(64) 'CODE'
+ENDIF
+___
+ push(@out,$tmp);
+ $segment = ".text\$";
+}
+
+sub ::function_begin_B
+{ my $func=shift;
+ my $global=($func !~ /^_/);
+ my $begin="${::lbdecor}_${func}_begin";
+
+ &::LABEL($func,$global?"$begin":"$nmdecor$func");
+ $func="ALIGN\t16\n".$nmdecor.$func."\tPROC";
+
+ if ($global) { $func.=" PUBLIC\n${begin}::\n"; }
+ else { $func.=" PRIVATE\n"; }
+ push(@out,$func);
+ $::stack=4;
+}
+sub ::function_end_B
+{ my $func=shift;
+
+ push(@out,"$nmdecor$func ENDP\n");
+ $::stack=0;
+ &::wipe_labels();
+}
+
+sub ::file_end
+{ my $xmmheader=<<___;
+.686
+.XMM
+IF \@Version LT 800
+XMMWORD STRUCT 16
+DQ 2 dup (?)
+XMMWORD ENDS
+ENDIF
+___
+ if (grep {/\b[x]?mm[0-7]\b/i} @out) {
+ grep {s/\.[3-7]86/$xmmheader/} @out;
+ }
+
+ push(@out,"$segment ENDS\n");
+
+ if (grep {/\b${nmdecor}OPENSSL_ia32cap_P\b/i} @out)
+ { my $comm=<<___;
+.bss SEGMENT 'BSS'
+COMM ${nmdecor}OPENSSL_ia32cap_P:DWORD
+.bss ENDS
+___
+ # comment out OPENSSL_ia32cap_P declarations
+ grep {s/(^EXTERN\s+${nmdecor}OPENSSL_ia32cap_P)/\;$1/} @out;
+ push (@out,$comm);
+ }
+ push (@out,$initseg) if ($initseg);
+ push (@out,"END\n");
+}
+
+sub ::comment { foreach (@_) { push(@out,"\t; $_\n"); } }
+
+*::set_label_B = sub
+{ my $l=shift; push(@out,$l.($l=~/^\Q${::lbdecor}\E[0-9]{3}/?":\n":"::\n")); };
+
+sub ::external_label
+{ foreach(@_)
+ { push(@out, "EXTERN\t".&::LABEL($_,$nmdecor.$_).":NEAR\n"); }
+}
+
+sub ::public_label
+{ push(@out,"PUBLIC\t".&::LABEL($_[0],$nmdecor.$_[0])."\n"); }
+
+sub ::data_byte
+{ push(@out,("DB\t").join(',',@_)."\n"); }
+
+sub ::data_word
+{ push(@out,("DD\t").join(',',@_)."\n"); }
+
+sub ::align
+{ push(@out,"ALIGN\t$_[0]\n"); }
+
+sub ::picmeup
+{ my($dst,$sym)=@_;
+ &::lea($dst,&::DWP($sym));
+}
+
+sub ::initseg
+{ my $f=$nmdecor.shift;
+
+ $initseg.=<<___;
+.CRT\$XCU SEGMENT DWORD PUBLIC 'DATA'
+EXTERN $f:NEAR
+DD $f
+.CRT\$XCU ENDS
+___
+}
+
+sub ::dataseg
+{ push(@out,"$segment\tENDS\n_DATA\tSEGMENT\n"); $segment="_DATA"; }
+
+1;