190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber#!/usr/bin/env perl 290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber## 3f71323e297a928af368937089d3ed71239786f86Andreas Huber## Copyright (c) 2010 The WebM project authors. All Rights Reserved. 490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber## 5f71323e297a928af368937089d3ed71239786f86Andreas Huber## Use of this source code is governed by a BSD-style license 6f71323e297a928af368937089d3ed71239786f86Andreas Huber## that can be found in the LICENSE file in the root of the source 7f71323e297a928af368937089d3ed71239786f86Andreas Huber## tree. An additional intellectual property rights grant can be found 8f71323e297a928af368937089d3ed71239786f86Andreas Huber## in the file PATENTS. All contributing project authors may 9f71323e297a928af368937089d3ed71239786f86Andreas Huber## be found in the AUTHORS file in the root of the source tree. 1090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber## 1190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 1290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 1390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# ads2gas.pl 1490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# Author: Eric Fung (efung (at) acm.org) 1590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# 1690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# Convert ARM Developer Suite 1.0.1 syntax assembly source to GNU as format 1790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# 1890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# Usage: cat inputfile | perl ads2gas.pl > outputfile 1990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# 2090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberprint "@ This file was created from a .asm file\n"; 2190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberprint "@ using the ads2gas_apple.pl script.\n\n"; 2290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberprint "\t.set WIDE_REFERENCE, 0\n"; 2390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberprint "\t.set ARCHITECTURE, 5\n"; 2490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberprint "\t.set DO1STROUNDING, 0\n"; 2590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubermy %register_aliases; 2790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubermy %macro_aliases; 2890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 2990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubermy @mapping_list = ("\$0", "\$1", "\$2", "\$3", "\$4", "\$5", "\$6", "\$7", "\$8", "\$9"); 3090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubermy @incoming_array; 3290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 3390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# Perl trim function to remove whitespace from the start and end of the string 3490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Hubersub trim($) 3590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 3690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber my $string = shift; 3790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber $string =~ s/^\s+//; 3890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber $string =~ s/\s+$//; 3990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber return $string; 4090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 4190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huberwhile (<STDIN>) 4390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber{ 4490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Comment character 4590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/;/@/g; 4690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 4790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Hexadecimal constants prefaced by 0x 4890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/#&/#0x/g; 4990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert :OR: to | 5190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/:OR:/ | /g; 5290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert :AND: to & 5490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/:AND:/ & /g; 5590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert :NOT: to ~ 5790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/:NOT:/ ~ /g; 5890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 5990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert :SHL: to << 6090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/:SHL:/ << /g; 6190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 6290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert :SHR: to >> 6390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/:SHR:/ >> /g; 6490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 6590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert ELSE to .else 6690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/ELSE/.else/g; 6790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 6890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert ENDIF to .endif 6990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/ENDIF/.endif/g; 7090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert ELSEIF to .elseif 7290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/ELSEIF/.elseif/g; 7390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert LTORG to .ltorg 7590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/LTORG/.ltorg/g; 7690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 7790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert IF :DEF:to .if 7890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # gcc doesn't have the ability to do a conditional 7990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # if defined variable that is set by IF :DEF: on 8090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # armasm, so convert it to a normal .if and then 8190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # make sure to define a value elesewhere 8290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (s/\bIF :DEF:\b/.if /g) 8390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 8490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/=/==/g; 8590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 8690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 8790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert IF to .if 8890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (s/\bIF\b/.if/g) 8990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 9090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/=/==/g; 9190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 9290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Convert INCLUDE to .INCLUDE "file" 9490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/INCLUDE(\s*)(.*)$/.include $1\"$2\"/; 9590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Code directive (ARM vs Thumb) 9790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/CODE([0-9][0-9])/.code $1/; 9890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 9990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # No AREA required 10090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/^\s*AREA.*$/.text/; 10190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # DCD to .word 10390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # This one is for incoming symbols 10490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/DCD\s+\|(\w*)\|/.long $1/; 10590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 10690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # DCW to .short 10790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/DCW\s+\|(\w*)\|/.short $1/; 10890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/DCW(.*)/.short $1/; 10990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Constants defined in scope 11190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/DCD(.*)/.long $1/; 11290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/DCB(.*)/.byte $1/; 11390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 11490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Build a hash of all the register - alias pairs. 11590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (s/(.*)RN(.*)/$1 .req $2/g) 11690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 11790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber $register_aliases{trim($1)} = trim($2); 11890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber next; 11990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 12090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 12190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber while (($key, $value) = each(%register_aliases)) 12290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 12390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/\b$key\b/$value/g; 12490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 12590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 12690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Make function visible to linker, and make additional symbol with 12790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # prepended underscore 12890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/EXPORT\s+\|([\$\w]*)\|/.globl _$1\n\t.globl $1/; 12990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/IMPORT\s+\|([\$\w]*)\|/.globl $1/; 13090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # No vertical bars required; make additional symbol with prepended 13290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # underscore 13390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/^\|(\$?\w+)\|/_$1\n\t$1:/g; 13490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 13590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Labels need trailing colon 13690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# s/^(\w+)/$1:/ if !/EQU/; 13790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # put the colon at the end of the line in the macro 13890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/^([a-zA-Z_0-9\$]+)/$1:/ if !/EQU/; 13990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 14090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Strip ALIGN 14190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/\sALIGN/@ ALIGN/g; 14290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 14390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Strip ARM 14490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/\sARM/@ ARM/g; 14590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 14690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Strip REQUIRE8 14790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber #s/\sREQUIRE8/@ REQUIRE8/g; 14890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/\sREQUIRE8/@ /g; 14990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 15090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Strip PRESERVE8 15190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/\sPRESERVE8/@ PRESERVE8/g; 15290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 15390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Strip PROC and ENDPROC 15490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/PROC/@/g; 15590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/ENDP/@/g; 15690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 15790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # EQU directive 15890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/(.*)EQU(.*)/.set $1, $2/; 15990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 16090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Begin macro definition 16190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber if (/MACRO/) 16290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 16390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # Process next line down, which will be the macro definition 16490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber $_ = <STDIN>; 16590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 16690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber $trimmed = trim($_); 16790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 16890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # remove commas that are separating list 16990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber $trimmed =~ s/,//g; 17090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 17190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # string to array 17290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber @incoming_array = split(/ /, $trimmed); 17390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 17490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber print ".macro @incoming_array[0]\n"; 17590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 17690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # remove the first element, as that is the name of the macro 17790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber shift (@incoming_array); 17890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 17990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber @macro_aliases{@incoming_array} = @mapping_list; 18090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 18190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber next; 18290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 18390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 18490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber while (($key, $value) = each(%macro_aliases)) 18590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber { 18690d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber $key =~ s/\$/\\\$/; 18790d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/$key\b/$value/g; 18890d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber } 18990d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber 19090d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber # For macros, use \ to reference formal params 19190d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber# s/\$/\\/g; # End macro definition 19290d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber s/MEND/.endm/; # No need to tell it where to stop assembling 19390d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber next if /^\s*END\s*$/; 19490d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber print; 19590d3ed91ae9228e1c8bab561b6138d4cb8c1e4fdAndreas Huber} 196