6502/as65
1
0
Fork 0
mirror of https://github.com/softwarejanitor/as65.git synced 2025-04-08 18:40:10 +00:00
Code Issues Projects Releases Wiki Activity

Added HEX pseudo mnemonic

Browse Source
This commit is contained in:
Leeland Heins 2018-12-18 14:07:05 -06:00 committed by GitHub
parent 49f47e9717
commit 6e2c18d8d3
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 17 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
as65.pl
View File

@ -733,9 +733,9 @@ my %mnemonics = (
# Generate code for one byte instructions.
sub generate_8 {
my ($ofh, $addr, $opcode, $opval) = @_;
my ($ofh, $addr, $opcode) = @_;
print sprintf(">>>> GENERATING %04x %02x\n", $addr, $opcode) if $code_listing;
print sprintf("* %04x- %02x\n", $addr, $opcode) if $code_listing;
print $ofh pack("C", $opcode);
}
@ -743,7 +743,7 @@ sub generate_8 {
sub generate_16 {
my ($ofh, $addr, $opcode, $opval) = @_;
print sprintf(">>>> GENERATING %04x %02x %02x\n", $addr, $opcode, $opval) if $code_listing;
print sprintf("* %04x- %02x %02x\n", $addr, $opcode, $opval) if $code_listing;
print $ofh pack("C", $opcode);
print $ofh pack("C", $opval);
}
@ -752,7 +752,7 @@ sub generate_16 {
sub generate_24 {
my ($ofh, $addr, $opcode, $opval1, $opval2) = @_;
print sprintf(">>>> GENERATING %04x %02x %02x %02x\n", $addr, $opcode, $opval1, $opval2) if $code_listing;
print sprintf("* %04x- %02x %02x %02x\n", $addr, $opcode, $opval1, $opval2) if $code_listing;
print $ofh pack("C", $opcode);
print $ofh pack("C", $opval1);
print $ofh pack("C", $opval2);
@ -907,9 +907,6 @@ sub is_Immediate {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
# Allow arithmetic on symbol
@ -921,9 +918,6 @@ sub is_Immediate {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
}
@ -998,9 +992,6 @@ sub is_Zero_Page {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
# Allow symbol arithmetic
@ -1013,9 +1004,6 @@ sub is_Zero_Page {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
}
@ -1082,9 +1070,6 @@ sub is_Zero_Page_X {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
} elsif ($operand =~ /^([A-Za-z\.][A-Za-z0-9_\.]+)\s*[+-]\s*\d+,[Xx]$/) {
@ -1096,9 +1081,6 @@ sub is_Zero_Page_X {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
}
@ -1150,9 +1132,6 @@ sub is_Zero_Page_Y {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
} elsif ($operand =~ /^([A-Za-z\.][A-Za-z0-9_\.]+)\s*[+-]\s*\d+,[Yy]$/) {
@ -1542,9 +1521,6 @@ sub is_Indirect_Zero_Page_X {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
} elsif ($operand =~ /^\(([A-Za-z\.][A-Za-z0-9_\.]+)\s*[+-]\s*(\d+),[Xx]\)/) {
@ -1556,9 +1532,6 @@ sub is_Indirect_Zero_Page_X {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
}
@ -1615,9 +1588,6 @@ sub is_Indirect_Zero_Page_Y {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
} elsif ($operand =~ /^\(([A-Za-z\.][A-Za-z0-9_\.]+)\s*[+-]\s*(\d+)\),[Yy]/) {
@ -1629,9 +1599,6 @@ sub is_Indirect_Zero_Page_Y {
} else {
return 0 unless $symval =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/;
}
} else {
print "**** $lineno - Unknown symbol '$1'\n";
return 0;
}
return 2;
}
@ -2075,7 +2042,11 @@ if (open($ifh, "<$input_file")) {
$symbol =~ s/:$//;
print "%%%% Saving Symbol $symbol $operand\n" if $verbose;
$symbols{$symbol} = $operand;
} elsif ($ucmnemonic =~ /OBJ|CHK/i) {
} elsif ($ucmnemonic =~ /HEX/i) {
my $symbol = $label;
$symbol =~ s/:$//;
$symbols{$symbol} = sprintf("\$%04x", $addr);
} elsif ($ucmnemonic =~ /OBJ|CHK|HEX/i) {
# Just ignore this
# Mnemonic Addressing mode Form Opcode Size Timing
} elsif (defined $mnemonics{$ucmnemonic}) {
@ -2102,7 +2073,7 @@ if (open($ifh, "<$input_file")) {
print "---- Symbol table ----\n";
foreach my $ky (keys %symbols) {
print "$ky : $symbols{$ky}\n";
print sprintf("%-10s : %s\n", $ky, $symbols{$ky});
}
print "\n";
@ -2171,6 +2142,13 @@ if (open($ifh, "<$input_file")) {
if (! $foundit) {
print "!!!! Unrecognized operating mode $line!\n";
}
} elsif ($ucmnemonic eq 'HEX') {
# Unpack hex data.
my @bytes = map { pack('C', hex($_)) } ($operand =~ /(..)/g);
foreach my $byte (@bytes) {
generate_8($ofh, $addr, ord($byte));
}
generate_8($ofh, $addr, 0x00);
} else {
print "SYNTAX ERROR 2! $mnemonic\n";
}