1d0dc7c9f5
Change-Id: I8ea836ce92c1c96f1e2bdf45e704d36ec9dbc401
209 lines
5.1 KiB
Perl
Executable File
209 lines
5.1 KiB
Perl
Executable File
#!/usr/bin/perl
|
|
##
|
|
## Copyright (c) 2010 The WebM project authors. All Rights Reserved.
|
|
##
|
|
## Use of this source code is governed by a BSD-style license
|
|
## that can be found in the LICENSE file in the root of the source
|
|
## tree. An additional intellectual property rights grant can be found
|
|
## in the file PATENTS. All contributing project authors may
|
|
## be found in the AUTHORS file in the root of the source tree.
|
|
##
|
|
|
|
|
|
# ads2gas.pl
|
|
# Author: Eric Fung (efung (at) acm.org)
|
|
#
|
|
# Convert ARM Developer Suite 1.0.1 syntax assembly source to GNU as format
|
|
#
|
|
# Usage: cat inputfile | perl ads2gas.pl > outputfile
|
|
#
|
|
print "@ This file was created from a .asm file\n";
|
|
print "@ using the ads2gas.pl script.\n";
|
|
print "\t.equ DO1STROUNDING, 0\n";
|
|
|
|
# Stack of procedure names.
|
|
@proc_stack = ();
|
|
|
|
while (<STDIN>)
|
|
{
|
|
undef $comment;
|
|
undef $line;
|
|
$comment_char = ";";
|
|
$comment_sub = "@";
|
|
|
|
# Handle comments.
|
|
if (/$comment_char/)
|
|
{
|
|
$comment = "";
|
|
($line, $comment) = /(.*?)$comment_char(.*)/;
|
|
$_ = $line;
|
|
}
|
|
|
|
# Load and store alignment
|
|
s/@/,:/g;
|
|
|
|
# Hexadecimal constants prefaced by 0x
|
|
s/#&/#0x/g;
|
|
|
|
# Convert :OR: to |
|
|
s/:OR:/ | /g;
|
|
|
|
# Convert :AND: to &
|
|
s/:AND:/ & /g;
|
|
|
|
# Convert :NOT: to ~
|
|
s/:NOT:/ ~ /g;
|
|
|
|
# Convert :SHL: to <<
|
|
s/:SHL:/ << /g;
|
|
|
|
# Convert :SHR: to >>
|
|
s/:SHR:/ >> /g;
|
|
|
|
# Convert ELSE to .else
|
|
s/ELSE/.else/g;
|
|
|
|
# Convert ENDIF to .endif
|
|
s/ENDIF/.endif/g;
|
|
|
|
# Convert ELSEIF to .elseif
|
|
s/ELSEIF/.elseif/g;
|
|
|
|
# Convert LTORG to .ltorg
|
|
s/LTORG/.ltorg/g;
|
|
|
|
# Convert endfunc to nothing.
|
|
s/endfunc//ig;
|
|
|
|
# Convert FUNCTION to nothing.
|
|
s/FUNCTION//g;
|
|
s/function//g;
|
|
|
|
s/ENTRY//g;
|
|
s/MSARMASM/0/g;
|
|
s/^\s+end\s+$//g;
|
|
|
|
# Convert IF :DEF:to .if
|
|
# gcc doesn't have the ability to do a conditional
|
|
# if defined variable that is set by IF :DEF: on
|
|
# armasm, so convert it to a normal .if and then
|
|
# make sure to define a value elesewhere
|
|
if (s/\bIF :DEF:\b/.if /g)
|
|
{
|
|
s/=/==/g;
|
|
}
|
|
|
|
# Convert IF to .if
|
|
if (s/\bIF\b/.if/g)
|
|
{
|
|
s/=+/==/g;
|
|
}
|
|
|
|
# Convert INCLUDE to .INCLUDE "file"
|
|
s/INCLUDE(\s*)(.*)$/.include $1\"$2\"/;
|
|
|
|
# Code directive (ARM vs Thumb)
|
|
s/CODE([0-9][0-9])/.code $1/;
|
|
|
|
# No AREA required
|
|
# But ALIGNs in AREA must be obeyed
|
|
s/^\s*AREA.*ALIGN=([0-9])$/.text\n.p2align $1/;
|
|
# If no ALIGN, strip the AREA and align to 4 bytes
|
|
s/^\s*AREA.*$/.text\n.p2align 2/;
|
|
|
|
# DCD to .word
|
|
# This one is for incoming symbols
|
|
s/DCD\s+\|(\w*)\|/.long $1/;
|
|
|
|
# DCW to .short
|
|
s/DCW\s+\|(\w*)\|/.short $1/;
|
|
s/DCW(.*)/.short $1/;
|
|
|
|
# Constants defined in scope
|
|
s/DCD(.*)/.long $1/;
|
|
s/DCB(.*)/.byte $1/;
|
|
|
|
# RN to .req
|
|
if (s/RN\s+([Rr]\d+|lr)/.req $1/)
|
|
{
|
|
print;
|
|
print "$comment_sub$comment\n" if defined $comment;
|
|
next;
|
|
}
|
|
|
|
# Make function visible to linker, and make additional symbol with
|
|
# prepended underscore
|
|
s/EXPORT\s+\|([\$\w]*)\|/.global $1 \n\t.type $1, function/;
|
|
s/IMPORT\s+\|([\$\w]*)\|/.global $1/;
|
|
|
|
s/EXPORT\s+([\$\w]*)/.global $1/;
|
|
s/export\s+([\$\w]*)/.global $1/;
|
|
|
|
# No vertical bars required; make additional symbol with prepended
|
|
# underscore
|
|
s/^\|(\$?\w+)\|/_$1\n\t$1:/g;
|
|
|
|
# Labels need trailing colon
|
|
# s/^(\w+)/$1:/ if !/EQU/;
|
|
# put the colon at the end of the line in the macro
|
|
s/^([a-zA-Z_0-9\$]+)/$1:/ if !/EQU/;
|
|
|
|
# ALIGN directive
|
|
s/ALIGN/.balign/g;
|
|
|
|
# ARM code
|
|
s/\sARM/.arm/g;
|
|
|
|
# NEON code
|
|
s/(vld1.\d+\s+)(q\d+)/$1\{$2\}/g;
|
|
s/(vtbl.\d+\s+[^,]+),([^,]+)/$1,\{$2\}/g;
|
|
|
|
# eabi_attributes numerical equivalents can be found in the
|
|
# "ARM IHI 0045C" document.
|
|
|
|
# REQUIRE8 Stack is required to be 8-byte aligned
|
|
s/\sREQUIRE8/.eabi_attribute 24, 1 \@Tag_ABI_align_needed/g;
|
|
|
|
# PRESERVE8 Stack 8-byte align is preserved
|
|
s/\sPRESERVE8/.eabi_attribute 25, 1 \@Tag_ABI_align_preserved/g;
|
|
|
|
# Use PROC and ENDP to give the symbols a .size directive.
|
|
# This makes them show up properly in debugging tools like gdb and valgrind.
|
|
if (/\bPROC\b/)
|
|
{
|
|
my $proc;
|
|
/^_([\.0-9A-Z_a-z]\w+)\b/;
|
|
$proc = $1;
|
|
push(@proc_stack, $proc) if ($proc);
|
|
s/\bPROC\b/@ $&/;
|
|
}
|
|
if (/\bENDP\b/)
|
|
{
|
|
my $proc;
|
|
s/\bENDP\b/@ $&/;
|
|
$proc = pop(@proc_stack);
|
|
$_ = "\t.size $proc, .-$proc".$_ if ($proc);
|
|
}
|
|
|
|
# EQU directive
|
|
s/(\S+\s+)EQU(\s+\S+)/.equ $1, $2/;
|
|
|
|
# Begin macro definition
|
|
if (/MACRO/) {
|
|
$_ = <STDIN>;
|
|
s/^/.macro/;
|
|
s/\$//g; # remove formal param reference
|
|
s/;/@/g; # change comment characters
|
|
}
|
|
|
|
# For macros, use \ to reference formal params
|
|
s/\$/\\/g; # End macro definition
|
|
s/MEND/.endm/; # No need to tell it where to stop assembling
|
|
next if /^\s*END\s*$/;
|
|
print;
|
|
print "$comment_sub$comment\n" if defined $comment;
|
|
}
|
|
|
|
# Mark that this object doesn't need an executable stack.
|
|
printf ("\t.section\t.note.GNU-stack,\"\",\%\%progbits\n");
|