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dsp56k: Add makefile for building from source

Some small amount of postprocessing is required after assembling
bootstrap.asm with a56.  Add a script and makefile for this.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
master
Ben Hutchings преди 9 години
родител
ревизия
2514500322
променени са 3 файла, в които са добавени 42 реда и са изтрити 1 реда
  1. 3
    1
      WHENCE
  2. 6
    0
      dsp56k/Makefile
  3. 33
    0
      dsp56k/concat-bootstrap.pl

+ 3
- 1
WHENCE Целия файл

@@ -372,10 +372,12 @@ Driver: dsp56k - Atari DSP56k support

File: dsp56k/bootstrap.bin
Source: dsp56k/bootstrap.asm
Source: dsp56k/Makefile
Source: dsp56k/concat-bootstrap.pl

Licence: GPLv2 or later

DSP56001 assembler, possibly buildable with a56 from
DSP56001 assembler, buildable with a56 from
http://www.zdomain.com/a56.html

--------------------------------------------------------------------------

+ 6
- 0
dsp56k/Makefile Целия файл

@@ -0,0 +1,6 @@
bootstrap.bin: bootstrap.asm concat-bootstrap.pl
a56 bootstrap.asm >/dev/null
perl concat-bootstrap.pl <a56.out >bootstrap.bin

clean:
rm -f a56.out bootstrap.bin

+ 33
- 0
dsp56k/concat-bootstrap.pl Целия файл

@@ -0,0 +1,33 @@
# Postprocessor for dsp56k bootstrap code.
#
# Copyright Ben Hutchings 2011.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

use strict;
use warnings;

my @memory;
my %symbol;

# Reconstruct memory image and symbol table
while (<>) {
if (/^P ([0-9A-F]{4}) ([0-9A-F]{6})\n/) {
$memory[hex($1)] = hex($2);
} elsif (/^I ([0-9A-F]{6}) (\w+)\n/) {
$symbol{$2} = hex($1);
} else {
print STDERR "W: did not recognise line $.\n";
}
}

# Concatenate first and second stage. Second stage is assembled
# between 'upload' and 'upload_end', but initially loaded at
# 'real' (end of the first stage).
for (0 .. ($symbol{real} - 1), $symbol{upload} .. ($symbol{upload_end} - 1)) {
my $word = $memory[$_] || 0;
print pack('CCC', $word / 65536, ($word / 256) % 256, $word % 256);
}

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