A different way of storing the ROM image.

[uccvend-snackrom.git] / ROM2 / src2asm.pl

diff --git a/ROM2/src2asm.pl b/ROM2/src2asm.pl
new file mode 100644 (file)
index 0000000..e382f24
--- /dev/null
+++ b/ROM2/src2asm.pl
@@ -0,0 +1,32 @@
+#!/usr/bin/perl -w
+
+$origin = 0x9800; # must match address of .romsrc in memory.x
+$hole_start = 0xb600;
+$hole_size = 0x0200;
+
+print <<EOT;
+.sect .rodata
+.global _rom_src_data
+.global _rom_src_len
+
+.align 7 ; for a 128-bit boundary
+_rom_src_data:
+EOT
+my $size = 0;
+my $a;
+while (read STDIN,$a,1) {
+       if ($origin+$size == $hole_start) {
+               for($i = 0; $i < $hole_size; $i++) {
+                       print "\t.byte 0xff\n";
+               }
+               $size += $hole_size;
+       }
+       printf "\t.byte 0x%04x\n", ord($a);
+       $size++;
+}
+print <<EOT;
+
+       .align 2
+_rom_src_len:
+       .word $size
+EOT