--- /dev/null
+#!/usr/local/bin/perl
+
+package x86unix;
+
+$label="L000";
+$const="";
+$constl=0;
+
+$align=($main'aout)?"4":"16";
+$under=($main'aout)?"_":"";
+$com_start=($main'sol)?"/":"#";
+
+sub main'asm_init_output { @out=(); }
+sub main'asm_get_output { return(@out); }
+sub main'get_labels { return(@labels); }
+sub main'external_label { push(@labels,@_); }
+
+if ($main'cpp)
+ {
+ $align="ALIGN";
+ $under="";
+ $com_start='/*';
+ $com_end='*/';
+ }
+
+%lb=( 'eax', '%al',
+ 'ebx', '%bl',
+ 'ecx', '%cl',
+ 'edx', '%dl',
+ 'ax', '%al',
+ 'bx', '%bl',
+ 'cx', '%cl',
+ 'dx', '%dl',
+ );
+
+%hb=( 'eax', '%ah',
+ 'ebx', '%bh',
+ 'ecx', '%ch',
+ 'edx', '%dh',
+ 'ax', '%ah',
+ 'bx', '%bh',
+ 'cx', '%ch',
+ 'dx', '%dh',
+ );
+
+%regs=( 'eax', '%eax',
+ 'ebx', '%ebx',
+ 'ecx', '%ecx',
+ 'edx', '%edx',
+ 'esi', '%esi',
+ 'edi', '%edi',
+ 'ebp', '%ebp',
+ 'esp', '%esp',
+ );
+
+%reg_val=(
+ 'eax', 0x00,
+ 'ebx', 0x03,
+ 'ecx', 0x01,
+ 'edx', 0x02,
+ 'esi', 0x06,
+ 'edi', 0x07,
+ 'ebp', 0x05,
+ 'esp', 0x04,
+ );
+
+sub main'LB
+ {
+ (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
+ return($lb{$_[0]});
+ }
+
+sub main'HB
+ {
+ (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
+ return($hb{$_[0]});
+ }
+
+sub main'DWP
+ {
+ local($addr,$reg1,$reg2,$idx)=@_;
+
+ $ret="";
+ $addr =~ s/(^|[+ \t])([A-Za-z_]+[A-Za-z0-9_]+)($|[+ \t])/$1$under$2$3/;
+ $reg1="$regs{$reg1}" if defined($regs{$reg1});
+ $reg2="$regs{$reg2}" if defined($regs{$reg2});
+ $ret.=$addr if ($addr ne "") && ($addr ne 0);
+ if ($reg2 ne "")
+ {
+ if($idx ne "" && $idx != 0)
+ { $ret.="($reg1,$reg2,$idx)"; }
+ else
+ { $ret.="($reg1,$reg2)"; }
+ }
+ elsif ($reg1 ne "")
+ { $ret.="($reg1)" }
+ return($ret);
+ }
+
+sub main'BP
+ {
+ return(&main'DWP(@_));
+ }
+
+sub main'BC
+ {
+ return @_;
+ }
+
+sub main'DWC
+ {
+ return @_;
+ }
+
+#sub main'BP
+# {
+# local($addr,$reg1,$reg2,$idx)=@_;
+#
+# $ret="";
+#
+# $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
+# $reg1="$regs{$reg1}" if defined($regs{$reg1});
+# $reg2="$regs{$reg2}" if defined($regs{$reg2});
+# $ret.=$addr if ($addr ne "") && ($addr ne 0);
+# if ($reg2 ne "")
+# { $ret.="($reg1,$reg2,$idx)"; }
+# else
+# { $ret.="($reg1)" }
+# return($ret);
+# }
+
+sub main'mov { &out2("movl",@_); }
+sub main'movb { &out2("movb",@_); }
+sub main'and { &out2("andl",@_); }
+sub main'or { &out2("orl",@_); }
+sub main'shl { &out2("sall",@_); }
+sub main'shr { &out2("shrl",@_); }
+sub main'xor { &out2("xorl",@_); }
+sub main'xorb { &out2("xorb",@_); }
+sub main'add { &out2($_[0]=~/%[a-d][lh]/?"addb":"addl",@_); }
+sub main'adc { &out2("adcl",@_); }
+sub main'sub { &out2("subl",@_); }
+sub main'rotl { &out2("roll",@_); }
+sub main'rotr { &out2("rorl",@_); }
+sub main'exch { &out2($_[0]=~/%[a-d][lh]/?"xchgb":"xchgl",@_); }
+sub main'cmp { &out2("cmpl",@_); }
+sub main'lea { &out2("leal",@_); }
+sub main'mul { &out1("mull",@_); }
+sub main'div { &out1("divl",@_); }
+sub main'jmp { &out1("jmp",@_); }
+sub main'jmp_ptr { &out1p("jmp",@_); }
+sub main'je { &out1("je",@_); }
+sub main'jle { &out1("jle",@_); }
+sub main'jne { &out1("jne",@_); }
+sub main'jnz { &out1("jnz",@_); }
+sub main'jz { &out1("jz",@_); }
+sub main'jge { &out1("jge",@_); }
+sub main'jl { &out1("jl",@_); }
+sub main'ja { &out1("ja",@_); }
+sub main'jae { &out1("jae",@_); }
+sub main'jb { &out1("jb",@_); }
+sub main'jbe { &out1("jbe",@_); }
+sub main'jc { &out1("jc",@_); }
+sub main'jnc { &out1("jnc",@_); }
+sub main'jno { &out1("jno",@_); }
+sub main'dec { &out1("decl",@_); }
+sub main'inc { &out1($_[0]=~/%[a-d][hl]/?"incb":"incl",@_); }
+sub main'push { &out1("pushl",@_); $stack+=4; }
+sub main'pop { &out1("popl",@_); $stack-=4; }
+sub main'pushf { &out0("pushf"); $stack+=4; }
+sub main'popf { &out0("popf"); $stack-=4; }
+sub main'not { &out1("notl",@_); }
+sub main'call { &out1("call",($_[0]=~/^\.L/?'':$under).$_[0]); }
+sub main'ret { &out0("ret"); }
+sub main'nop { &out0("nop"); }
+sub main'movz { &out2("movzbl",@_); }
+
+# The bswapl instruction is new for the 486. Emulate if i386.
+sub main'bswap
+ {
+ if ($main'i386)
+ {
+ &main'comment("bswapl @_");
+ &main'exch(main'HB(@_),main'LB(@_));
+ &main'rotr(@_,16);
+ &main'exch(main'HB(@_),main'LB(@_));
+ }
+ else
+ {
+ &out1("bswapl",@_);
+ }
+ }
+
+sub out2
+ {
+ local($name,$p1,$p2)=@_;
+ local($l,$ll,$t);
+ local(%special)=( "roll",0xD1C0,"rorl",0xD1C8,
+ "rcll",0xD1D0,"rcrl",0xD1D8,
+ "shll",0xD1E0,"shrl",0xD1E8,
+ "sarl",0xD1F8);
+
+ if ((defined($special{$name})) && defined($regs{$p1}) && ($p2 == 1))
+ {
+ $op=$special{$name}|$reg_val{$p1};
+ $tmp1=sprintf(".byte %d\n",($op>>8)&0xff);
+ $tmp2=sprintf(".byte %d\t",$op &0xff);
+ push(@out,$tmp1);
+ push(@out,$tmp2);
+
+ $p2=&conv($p2);
+ $p1=&conv($p1);
+ &main'comment("$name $p2 $p1");
+ return;
+ }
+
+ push(@out,"\t$name\t");
+ $t=&conv($p2).",";
+ $l=length($t);
+ push(@out,$t);
+ $ll=4-($l+9)/8;
+ $tmp1=sprintf("\t" x $ll);
+ push(@out,$tmp1);
+ push(@out,&conv($p1)."\n");
+ }
+
+sub out1
+ {
+ local($name,$p1)=@_;
+ local($l,$t);
+ local(%special)=("bswapl",0x0FC8);
+
+ if ((defined($special{$name})) && defined($regs{$p1}))
+ {
+ $op=$special{$name}|$reg_val{$p1};
+ $tmp1=sprintf(".byte %d\n",($op>>8)&0xff);
+ $tmp2=sprintf(".byte %d\t",$op &0xff);
+ push(@out,$tmp1);
+ push(@out,$tmp2);
+
+ $p2=&conv($p2);
+ $p1=&conv($p1);
+ &main'comment("$name $p2 $p1");
+ return;
+ }
+
+ push(@out,"\t$name\t".&conv($p1)."\n");
+ }
+
+sub out1p
+ {
+ local($name,$p1)=@_;
+ local($l,$t);
+
+ push(@out,"\t$name\t*".&conv($p1)."\n");
+ }
+
+sub out0
+ {
+ push(@out,"\t$_[0]\n");
+ }
+
+sub conv
+ {
+ local($p)=@_;
+
+# $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
+
+ $p=$regs{$p} if (defined($regs{$p}));
+
+ $p =~ s/^(-{0,1}[0-9A-Fa-f]+)$/\$$1/;
+ $p =~ s/^(0x[0-9A-Fa-f]+)$/\$$1/;
+ return $p;
+ }
+
+sub main'file
+ {
+ local($file)=@_;
+
+ local($tmp)=<<"EOF";
+ .file "$file.s"
+ .version "01.01"
+gcc2_compiled.:
+EOF
+ push(@out,$tmp);
+ }
+
+sub main'function_begin
+ {
+ local($func)=@_;
+
+ &main'external_label($func);
+ $func=$under.$func;
+
+ local($tmp)=<<"EOF";
+.text
+ .align $align
+.globl $func
+EOF
+ push(@out,$tmp);
+ if ($main'cpp)
+ { $tmp=push(@out,"\tTYPE($func,\@function)\n"); }
+ elsif ($main'gaswin)
+ { $tmp=push(@out,"\t.def\t$func;\t.scl\t2;\t.type\t32;\t.endef\n"); }
+ else { $tmp=push(@out,"\t.type\t$func,\@function\n"); }
+ push(@out,"$func:\n");
+ $tmp=<<"EOF";
+ pushl %ebp
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+
+EOF
+ push(@out,$tmp);
+ $stack=20;
+ }
+
+sub main'function_begin_B
+ {
+ local($func,$extra)=@_;
+
+ &main'external_label($func);
+ $func=$under.$func;
+
+ local($tmp)=<<"EOF";
+.text
+ .align $align
+.globl $func
+EOF
+ push(@out,$tmp);
+ if ($main'cpp)
+ { push(@out,"\tTYPE($func,\@function)\n"); }
+ elsif ($main'gaswin)
+ { $tmp=push(@out,"\t.def\t$func;\t.scl\t2;\t.type\t32;\t.endef\n"); }
+ else { push(@out,"\t.type $func,\@function\n"); }
+ push(@out,"$func:\n");
+ $stack=4;
+ }
+
+sub main'function_end
+ {
+ local($func)=@_;
+
+ $func=$under.$func;
+
+ local($tmp)=<<"EOF";
+ popl %edi
+ popl %esi
+ popl %ebx
+ popl %ebp
+ ret
+.L_${func}_end:
+EOF
+ push(@out,$tmp);
+
+ if ($main'cpp)
+ { push(@out,"\tSIZE($func,.L_${func}_end-$func)\n"); }
+ elsif ($main'gaswin)
+ { $tmp=push(@out,"\t.align 4\n"); }
+ else { push(@out,"\t.size\t$func,.L_${func}_end-$func\n"); }
+ push(@out,".ident \"$func\"\n");
+ $stack=0;
+ %label=();
+ }
+
+sub main'function_end_A
+ {
+ local($func)=@_;
+
+ local($tmp)=<<"EOF";
+ popl %edi
+ popl %esi
+ popl %ebx
+ popl %ebp
+ ret
+EOF
+ push(@out,$tmp);
+ }
+
+sub main'function_end_B
+ {
+ local($func)=@_;
+
+ $func=$under.$func;
+
+ push(@out,".L_${func}_end:\n");
+ if ($main'cpp)
+ { push(@out,"\tSIZE($func,.L_${func}_end-$func)\n"); }
+ elsif ($main'gaswin)
+ { push(@out,"\t.align 4\n"); }
+ else { push(@out,"\t.size\t$func,.L_${func}_end-$func\n"); }
+ push(@out,".ident \"desasm.pl\"\n");
+ $stack=0;
+ %label=();
+ }
+
+sub main'wparam
+ {
+ local($num)=@_;
+
+ return(&main'DWP($stack+$num*4,"esp","",0));
+ }
+
+sub main'stack_push
+ {
+ local($num)=@_;
+ $stack+=$num*4;
+ &main'sub("esp",$num*4);
+ }
+
+sub main'stack_pop
+ {
+ local($num)=@_;
+ $stack-=$num*4;
+ &main'add("esp",$num*4);
+ }
+
+sub main'swtmp
+ {
+ return(&main'DWP($_[0]*4,"esp","",0));
+ }
+
+# Should use swtmp, which is above esp. Linix can trash the stack above esp
+#sub main'wtmp
+# {
+# local($num)=@_;
+#
+# return(&main'DWP(-($num+1)*4,"esp","",0));
+# }
+
+sub main'comment
+ {
+ if ($main'elf) # GNU and SVR4 as'es use different comment delimiters,
+ { # so we just skip comments...
+ push(@out,"\n");
+ return;
+ }
+ foreach (@_)
+ {
+ if (/^\s*$/)
+ { push(@out,"\n"); }
+ else
+ { push(@out,"\t$com_start $_ $com_end\n"); }
+ }
+ }
+
+sub main'label
+ {
+ if (!defined($label{$_[0]}))
+ {
+ $label{$_[0]}=".${label}${_[0]}";
+ $label++;
+ }
+ return($label{$_[0]});
+ }
+
+sub main'set_label
+ {
+ if (!defined($label{$_[0]}))
+ {
+ $label{$_[0]}=".${label}${_[0]}";
+ $label++;
+ }
+ push(@out,".align $align\n") if ($_[1] != 0);
+ push(@out,"$label{$_[0]}:\n");
+ }
+
+sub main'file_end
+ {
+ if ($const ne "")
+ {
+ push(@out,".section .rodata\n");
+ push(@out,$const);
+ $const="";
+ }
+ }
+
+sub main'data_word
+ {
+ push(@out,"\t.long $_[0]\n");
+ }
+
+# debug output functions: puts, putx, printf
+
+sub main'puts
+ {
+ &pushvars();
+ &main'push('$Lstring' . ++$constl);
+ &main'call('puts');
+ $stack-=4;
+ &main'add("esp",4);
+ &popvars();
+
+ $const .= "Lstring$constl:\n\t.string \"@_[0]\"\n";
+ }
+
+sub main'putx
+ {
+ &pushvars();
+ &main'push($_[0]);
+ &main'push('$Lstring' . ++$constl);
+ &main'call('printf');
+ &main'add("esp",8);
+ $stack-=8;
+ &popvars();
+
+ $const .= "Lstring$constl:\n\t.string \"\%X\"\n";
+ }
+
+sub main'printf
+ {
+ $ostack = $stack;
+ &pushvars();
+ for ($i = @_ - 1; $i >= 0; $i--)
+ {
+ if ($i == 0) # change this to support %s format strings
+ {
+ &main'push('$Lstring' . ++$constl);
+ $const .= "Lstring$constl:\n\t.string \"@_[$i]\"\n";
+ }
+ else
+ {
+ if ($_[$i] =~ /([0-9]*)\(%esp\)/)
+ {
+ &main'push(($1 + $stack - $ostack) . '(%esp)');
+ }
+ else
+ {
+ &main'push($_[$i]);
+ }
+ }
+ }
+ &main'call('printf');
+ $stack-=4*@_;
+ &main'add("esp",4*@_);
+ &popvars();
+ }
+
+sub pushvars
+ {
+ &main'pushf();
+ &main'push("edx");
+ &main'push("ecx");
+ &main'push("eax");
+ }
+
+sub popvars
+ {
+ &main'pop("eax");
+ &main'pop("ecx");
+ &main'pop("edx");
+ &main'popf();
+ }
+
+sub main'picmeup
+ {
+ local($dst,$sym)=@_;
+ if ($main'cpp)
+ {
+ local($tmp)=<<___;
+#if (defined(ELF) || defined(SOL)) && defined(PIC)
+ .align 8
+ call 1f
+1: popl $regs{$dst}
+ addl \$_GLOBAL_OFFSET_TABLE_+[.-1b],$regs{$dst}
+ movl $sym\@GOT($regs{$dst}),$regs{$dst}
+#else
+ leal $sym,$regs{$dst}
+#endif
+___
+ push(@out,$tmp);
+ }
+ elsif ($main'pic && ($main'elf || $main'aout))
+ {
+ push(@out,"\t.align\t8\n");
+ &main'call(&main'label("PIC_me_up"));
+ &main'set_label("PIC_me_up");
+ &main'blindpop($dst);
+ &main'add($dst,"\$$under"."_GLOBAL_OFFSET_TABLE_+[.-".
+ &main'label("PIC_me_up") . "]");
+ &main'mov($dst,&main'DWP($sym."\@GOT",$dst));
+ }
+ else
+ {
+ &main'lea($dst,&main'DWP($sym));
+ }
+ }
+
+sub main'blindpop { &out1("popl",@_); }
projects / bcm963xx.git / blobdiff