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diegovalve |
#!/usr/bin/perl
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################################################################
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#Theia, Ray Cast Programable graphic Processing Unit.
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#Copyright (C) 2010 Diego Valverde (diego.valverde.g@gmail.com)
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#
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#This program is free software; you can redistribute it and/or
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#modify it under the terms of the GNU General Public License
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#as published by the Free Software Foundation; either version 2
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#of the License, or (at your option) any later version.
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#
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#This program is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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#GNU General Public License for more details.
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#
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#You should have received a copy of the GNU General Public #License
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#along with this program; if not, write to the Free Software
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#Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA #02110-1301, USA.
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################################################################
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$CodePath = $ARGV[0];
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$DefsPath = "aDefinitions.v";
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$Line = 0;
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%Registers;
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%Instructions;
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%Labels;
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%EntryPoints;
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@EntryKeys;
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open OUT, ">Instructions.mem" or die "Can't open output file for R/W\n";
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PopulateRegistersAndInstructionSet();
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GenerateLabels();
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ParseCode();
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print
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"
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** Compilation successful! **
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The output has been written to 'Code.mem' file.
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Please make to copy this file under the same folder
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where the simulation executable is, and edit the
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'Creg.mem' let the RTL executable know that it
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should use the shader.
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Have a nice one!
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";
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close OUT;
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exit(0);
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#-------------------------------------------------------------------
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sub PopulateRegistersAndInstructionSet()
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{
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open DEFINITIONS, $DefsPath or die "'$DefsPath' : $!\n";
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while ()
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{
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#skip comments and empty lines
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next if (m/^([\s|\t]*\/\/)|^(\s*\n).*/);
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if (m/`define\s*(ENTRYPOINT_ADRR_\S*)[\s|\t]+.*\'d(\d+)/)
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{
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push @EntryKeys, $1;
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$EntryPoints{$1}= sprintf('%08X',$2);
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next;
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}
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if (m/\`define\s*([C|O]REG\_\S*)[\s|\t]+.*\'d(\d+)/ ||
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m/\`define\s*([R|C]\d+)[\s|\t]+.*\'d(\d+)/)
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{
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$Registers{$1} = sprintf('%X', $2);
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next;
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}
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if (m/\`define\s*(\S*)[\s|\t]+\`INSTRUCTION_OP_LENGTH\'b([0|1|\_]+)/)
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{
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$Instructions{$1} = $2;
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$key = $1;
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#get rid of the '_' characters
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$Instructions{$key} =~ s/\_//g;
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#convert to hexadecimal
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$Instructions{$key}= sprintf('%X', oct("0b$Instructions{$key}"));
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next;
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}
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if (m/\`define\s*(\S*)[\s|\t]+32\'d(\d+)/)
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{
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$Registers{$1} = $2;
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}
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}
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$InstructionCount = 0;
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close DEFINITIONS;
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#Ok, add some extra stuff
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$Registers{'VOID'} = 0;
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$Registers{'RT_TRUE'} = 1;
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$Registers{'RT_FALSE'} = 0;
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}
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#-------------------------------------------------------------------
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sub GenerateLabels()
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{
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my $IP = 0;
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open CODE, $CodePath or die "'$CodePath': $!\n";
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while ()
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{
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#skip comments and empty lines
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next if (m/^([\s|\t]*\/\/)|^(\s*\n).*/);
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$Line++;
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#print "$_ &&&& $IP\n";
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if (m/^(ENTRYPOINT_ADRR_\S+)\:.*\n/)
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{
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#print "$1\n";
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die "Error line $Line: Entry point not defined $1\n" if (not defined $EntryPoints{$1});
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$EntryPoints{$1} = sprintf("%06X",$IP | 0x8000);#sprintf("%08X",$Line-1 | 0x8000);
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#print ">> $EntryPoints{$1}\n";
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next;
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}
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if (m/[\s|\t]*(\S+)\:.*\n/)
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{
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print "$1 " . sprintf("%08X",$InstructionCount | 0x8000) . "\n";
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$Labels{$1} = ($IP | 0x8000);#(($Line-1) | 0x8000); #sprintf("%08X",$Line-1 | 0x8000)
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print "$1 = $Labels{$1}\n";
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next;
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}
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$IP++;
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$InstructionCount++;
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}
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close CODE;
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$Line = 0;
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}
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#-------------------------------------------------------------------
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sub DecodeInstruction
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{
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my ($Line,$EntryAddrCount,$OP,@Tokens) = @_;
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my @D_Tokens;
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if ( defined $Instructions{$OP}) { $D_OP = hex $Instructions{$OP};
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} else {
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die "Error Line $Line: undefined instruction '$OP'\n";
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}
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foreach $Token (@Tokens)
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{
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next if ($Token eq '');
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if ($Token =~ m/(RT_TRUE|RT_FALSE)/)
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{
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push @D_Tokens,0;
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push @D_Tokens,0;
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push @D_Tokens,$Registers{$Token};
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} elsif ($Token =~ m/SWIZZLE.*/){
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push @D_Tokens,0;
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push @D_Tokens,$Registers{$Token};
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} elsif (defined $Registers{$Token} ){
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push @D_Tokens, hex $Registers{$Token};
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} elsif (defined $Labels{$Token})
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{
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print "$Labels{$Token}\n";
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push @D_Tokens, ($Labels{$Token}+$EntryAddrCount);
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} elsif ($Token =~ m/32\'h(.*)/) {
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#if this is inmmediate value of 32 bits, then insert 0 and then the value
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push @D_Tokens,0;
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push @D_Tokens, hex $1;
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} else {
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die "Error Line $Line: undefined token '$Token'\n"
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}
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}
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return ($D_OP,@D_Tokens);
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}
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#-------------------------------------------------------------------
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sub ParseCode()
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{
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my $ByteCount = ($InstructionCount+$#EntryKeys+1)*2;
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print OUT "$ByteCount //Number of ioctects in file\n";
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print OUT "//--------------------------------------\n";
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print OUT "//Subroutine Entry Point Table\n";
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my $IP = 0;
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for my $k ( @EntryKeys )
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{
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my $foo = (oct("0x$EntryPoints{$k}") & 0x8000) ?
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sprintf("%08X", oct("0x$EntryPoints{$k}")+$#EntryKeys+1) :
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sprintf("%08X", oct("0x$EntryPoints{$k}")) ;
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print OUT "00000000 $foo\t//$k\n";
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$IP++;
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}
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print OUT "//--------------------------------------\n";
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open CODE, $CodePath or die "$CodePath: $!\n";
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while ()
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{
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$Line++;
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#skip comments and empty lines
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next if (m/^([\s|\t]*\/\/)|^(\s*\n).*/);
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#skip labels
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next if (m/(\S+\:).*\n/);
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#get rid of comments in the same line
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s/\/\/.*\n/\n/g;
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my $OpcodeH,$OpcodeL;
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($OP,$DST,$R1,$R2) = ("","","","");
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#Handle OP DST R1 R2
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if (m/^[\s|\t]*(\S+)\s+(\S+)\s*(\S*)\s*(\S*).*\n/)
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{
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($OP,$DST,$R1,$R2) = ($1,$2,$3,$4);
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my @D = DecodeInstruction($Line,$#EntryKeys+1,$OP,($DST,$R1,$R2) );
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$OpcodeH = ($D[0] << 16) + $D[1];
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$OpcodeL = ($D[2] << 16) + $D[3];
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} else {
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die "Error: line $Line: incorrect statement '$_'\n";
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}
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printf OUT "%08X",$OpcodeH;
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printf OUT " %08X",$OpcodeL;
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print OUT "\t\t// ".sprintf("IP %06X",$IP | 0x8000) . " ($IP): $OP $DST $R1 $R2\n"; $IP++;
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}
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close CLOSE;
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}
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#-------------------------------------------------------------------
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