--- /dev/null
+#!/usr/local/bin/perl
+
+package alpha;
+use Carp qw(croak cluck);
+
+$label="100";
+
+$n_debug=0;
+$smear_regs=1;
+$reg_alloc=1;
+
+$align="3";
+$com_start="#";
+
+sub main'asm_init_output { @out=(); }
+sub main'asm_get_output { return(@out); }
+sub main'get_labels { return(@labels); }
+sub main'external_label { push(@labels,@_); }
+
+# General registers
+
+%regs=( 'r0', '$0',
+ 'r1', '$1',
+ 'r2', '$2',
+ 'r3', '$3',
+ 'r4', '$4',
+ 'r5', '$5',
+ 'r6', '$6',
+ 'r7', '$7',
+ 'r8', '$8',
+ 'r9', '$22',
+ 'r10', '$23',
+ 'r11', '$24',
+ 'r12', '$25',
+ 'r13', '$27',
+ 'r14', '$28',
+ 'r15', '$21', # argc == 5
+ 'r16', '$20', # argc == 4
+ 'r17', '$19', # argc == 3
+ 'r18', '$18', # argc == 2
+ 'r19', '$17', # argc == 1
+ 'r20', '$16', # argc == 0
+ 'r21', '$9', # save 0
+ 'r22', '$10', # save 1
+ 'r23', '$11', # save 2
+ 'r24', '$12', # save 3
+ 'r25', '$13', # save 4
+ 'r26', '$14', # save 5
+
+ 'a0', '$16',
+ 'a1', '$17',
+ 'a2', '$18',
+ 'a3', '$19',
+ 'a4', '$20',
+ 'a5', '$21',
+
+ 's0', '$9',
+ 's1', '$10',
+ 's2', '$11',
+ 's3', '$12',
+ 's4', '$13',
+ 's5', '$14',
+ 'zero', '$31',
+ 'sp', '$30',
+ );
+
+$main'reg_s0="r21";
+$main'reg_s1="r22";
+$main'reg_s2="r23";
+$main'reg_s3="r24";
+$main'reg_s4="r25";
+$main'reg_s5="r26";
+
+@reg=( '$0', '$1' ,'$2' ,'$3' ,'$4' ,'$5' ,'$6' ,'$7' ,'$8',
+ '$22','$23','$24','$25','$20','$21','$27','$28');
+
+
+sub main'sub { &out3("subq",@_); }
+sub main'add { &out3("addq",@_); }
+sub main'mov { &out3("bis",$_[0],$_[0],$_[1]); }
+sub main'or { &out3("bis",@_); }
+sub main'bis { &out3("bis",@_); }
+sub main'br { &out1("br",@_); }
+sub main'ld { &out2("ldq",@_); }
+sub main'st { &out2("stq",@_); }
+sub main'cmpult { &out3("cmpult",@_); }
+sub main'cmplt { &out3("cmplt",@_); }
+sub main'bgt { &out2("bgt",@_); }
+sub main'ble { &out2("ble",@_); }
+sub main'blt { &out2("blt",@_); }
+sub main'mul { &out3("mulq",@_); }
+sub main'muh { &out3("umulh",@_); }
+
+$main'QWS=8;
+
+sub main'asm_add
+ {
+ push(@out,@_);
+ }
+
+sub main'asm_finish
+ {
+ &main'file_end();
+ print &main'asm_get_output();
+ }
+
+sub main'asm_init
+ {
+ ($type,$fn)=@_;
+ $filename=$fn;
+
+ &main'asm_init_output();
+ &main'comment("Don't even think of reading this code");
+ &main'comment("It was automatically generated by $filename");
+ &main'comment("Which is a perl program used to generate the alpha assember.");
+ &main'comment("eric <eay\@cryptsoft.com>");
+ &main'comment("");
+
+ $filename =~ s/\.pl$//;
+ &main'file($filename);
+ }
+
+sub conv
+ {
+ local($r)=@_;
+ local($v);
+
+ return($regs{$r}) if defined($regs{$r});
+ return($r);
+ }
+
+sub main'QWPw
+ {
+ local($off,$reg)=@_;
+
+ return(&main'QWP($off*8,$reg));
+ }
+
+sub main'QWP
+ {
+ local($off,$reg)=@_;
+
+ $ret="$off(".&conv($reg).")";
+ return($ret);
+ }
+
+sub out3
+ {
+ local($name,$p1,$p2,$p3)=@_;
+
+ $p1=&conv($p1);
+ $p2=&conv($p2);
+ $p3=&conv($p3);
+ push(@out,"\t$name\t");
+ $l=length($p1)+1;
+ push(@out,$p1.",");
+ $ll=3-($l+9)/8;
+ $tmp1=sprintf("\t" x $ll);
+ push(@out,$tmp1);
+
+ $l=length($p2)+1;
+ push(@out,$p2.",");
+ $ll=3-($l+9)/8;
+ $tmp1=sprintf("\t" x $ll);
+ push(@out,$tmp1);
+
+ push(@out,&conv($p3)."\n");
+ }
+
+sub out2
+ {
+ local($name,$p1,$p2,$p3)=@_;
+
+ $p1=&conv($p1);
+ $p2=&conv($p2);
+ push(@out,"\t$name\t");
+ $l=length($p1)+1;
+ push(@out,$p1.",");
+ $ll=3-($l+9)/8;
+ $tmp1=sprintf("\t" x $ll);
+ push(@out,$tmp1);
+
+ push(@out,&conv($p2)."\n");
+ }
+
+sub out1
+ {
+ local($name,$p1)=@_;
+
+ $p1=&conv($p1);
+ push(@out,"\t$name\t".$p1."\n");
+ }
+
+sub out0
+ {
+ push(@out,"\t$_[0]\n");
+ }
+
+sub main'file
+ {
+ local($file)=@_;
+
+ local($tmp)=<<"EOF";
+ # DEC Alpha assember
+ # Generated from perl scripts contains in SSLeay
+ .file 1 "$file.s"
+ .set noat
+EOF
+ push(@out,$tmp);
+ }
+
+sub main'function_begin
+ {
+ local($func)=@_;
+
+print STDERR "$func\n";
+ local($tmp)=<<"EOF";
+ .text
+ .align $align
+ .globl $func
+ .ent $func
+${func}:
+${func}..ng:
+ .frame \$30,0,\$26,0
+ .prologue 0
+EOF
+ push(@out,$tmp);
+ $stack=0;
+ }
+
+sub main'function_end
+ {
+ local($func)=@_;
+
+ local($tmp)=<<"EOF";
+ ret \$31,(\$26),1
+ .end $func
+EOF
+ push(@out,$tmp);
+ $stack=0;
+ %label=();
+ }
+
+sub main'function_end_A
+ {
+ local($func)=@_;
+
+ local($tmp)=<<"EOF";
+ ret \$31,(\$26),1
+EOF
+ push(@out,$tmp);
+ }
+
+sub main'function_end_B
+ {
+ local($func)=@_;
+
+ $func=$under.$func;
+
+ push(@out,"\t.end $func\n");
+ $stack=0;
+ %label=();
+ }
+
+sub main'wparam
+ {
+ local($num)=@_;
+
+ if ($num < 6)
+ {
+ $num=20-$num;
+ return("r$num");
+ }
+ else
+ { return(&main'QWP($stack+$num*8,"sp")); }
+ }
+
+sub main'stack_push
+ {
+ local($num)=@_;
+ $stack+=$num*8;
+ &main'sub("sp",$num*8,"sp");
+ }
+
+sub main'stack_pop
+ {
+ local($num)=@_;
+ $stack-=$num*8;
+ &main'add("sp",$num*8,"sp");
+ }
+
+sub main'swtmp
+ {
+ return(&main'QWP(($_[0])*8,"sp"));
+ }
+
+# Should use swtmp, which is above sp. Linix can trash the stack above esp
+#sub main'wtmp
+# {
+# local($num)=@_;
+#
+# return(&main'QWP(-($num+1)*4,"esp","",0));
+# }
+
+sub main'comment
+ {
+ foreach (@_)
+ {
+ if (/^\s*$/)
+ { push(@out,"\n"); }
+ else
+ { push(@out,"\t$com_start $_ $com_end\n"); }
+ }
+ }
+
+sub main'label
+ {
+ if (!defined($label{$_[0]}))
+ {
+ $label{$_[0]}=$label;
+ $label++;
+ }
+ return('$'.$label{$_[0]});
+ }
+
+sub main'set_label
+ {
+ if (!defined($label{$_[0]}))
+ {
+ $label{$_[0]}=$label;
+ $label++;
+ }
+# push(@out,".align $align\n") if ($_[1] != 0);
+ push(@out,'$'."$label{$_[0]}:\n");
+ }
+
+sub main'file_end
+ {
+ }
+
+sub main'data_word
+ {
+ push(@out,"\t.long $_[0]\n");
+ }
+
+@pool_free=();
+@pool_taken=();
+$curr_num=0;
+$max=0;
+
+sub main'init_pool
+ {
+ local($args)=@_;
+ local($i);
+
+ @pool_free=();
+ for ($i=(14+(6-$args)); $i >= 0; $i--)
+ {
+ push(@pool_free,"r$i");
+ }
+ print STDERR "START :register pool:@pool_free\n";
+ $curr_num=$max=0;
+ }
+
+sub main'fin_pool
+ {
+ printf STDERR "END %2d:register pool:@pool_free\n",$max;
+ }
+
+sub main'GR
+ {
+ local($r)=@_;
+ local($i,@n,$_);
+
+ foreach (@pool_free)
+ {
+ if ($r ne $_)
+ { push(@n,$_); }
+ else
+ {
+ $curr_num++;
+ $max=$curr_num if ($curr_num > $max);
+ }
+ }
+ @pool_free=@n;
+print STDERR "GR:@pool_free\n" if $reg_alloc;
+ return(@_);
+ }
+
+sub main'NR
+ {
+ local($num)=@_;
+ local(@ret);
+
+ $num=1 if $num == 0;
+ ($#pool_free >= ($num-1)) || croak "out of registers: want $num, have @pool_free";
+ while ($num > 0)
+ {
+ push(@ret,pop @pool_free);
+ $curr_num++;
+ $max=$curr_num if ($curr_num > $max);
+ $num--
+ }
+ print STDERR "nr @ret\n" if $n_debug;
+print STDERR "NR:@pool_free\n" if $reg_alloc;
+ return(@ret);
+
+ }
+
+sub main'FR
+ {
+ local(@r)=@_;
+ local(@a,$v,$w);
+
+ print STDERR "fr @r\n" if $n_debug;
+# cluck "fr @r";
+ for $w (@pool_free)
+ {
+ foreach $v (@r)
+ {
+ croak "double register free of $v (@pool_free)" if $w eq $v;
+ }
+ }
+ foreach $v (@r)
+ {
+ croak "bad argument to FR" if ($v !~ /^r\d+$/);
+ if ($smear_regs)
+ { unshift(@pool_free,$v); }
+ else { push(@pool_free,$v); }
+ $curr_num--;
+ }
+print STDERR "FR:@pool_free\n" if $reg_alloc;
+ }
+1;
projects / openssl.git / blobdiff