mirror of
https://github.com/musix-org/musix-oss
synced 2024-11-14 06:40:21 +00:00
354 lines
10 KiB
Perl
354 lines
10 KiB
Perl
#!/usr/bin/perl
|
|
# Copyright (C) 2002-2013 Xiph.org Foundation
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
#
|
|
# - Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
#
|
|
# - Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
|
|
# OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
my $bigend; # little/big endian
|
|
my $nxstack;
|
|
my $apple = 0;
|
|
my $symprefix = "";
|
|
|
|
$nxstack = 0;
|
|
|
|
eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
|
|
if $running_under_some_shell;
|
|
|
|
while ($ARGV[0] =~ /^-/) {
|
|
$_ = shift;
|
|
last if /^--$/;
|
|
if (/^-n$/) {
|
|
$nflag++;
|
|
next;
|
|
}
|
|
if (/^--apple$/) {
|
|
$apple = 1;
|
|
$symprefix = "_";
|
|
next;
|
|
}
|
|
die "I don't recognize this switch: $_\\n";
|
|
}
|
|
$printit++ unless $nflag;
|
|
|
|
$\ = "\n"; # automatically add newline on print
|
|
$n=0;
|
|
|
|
$thumb = 0; # ARM mode by default, not Thumb.
|
|
@proc_stack = ();
|
|
|
|
printf (" .syntax unified\n");
|
|
|
|
LINE:
|
|
while (<>) {
|
|
|
|
# For ADRLs we need to add a new line after the substituted one.
|
|
$addPadding = 0;
|
|
|
|
# First, we do not dare to touch *anything* inside double quotes, do we?
|
|
# Second, if you want a dollar character in the string,
|
|
# insert two of them -- that's how ARM C and assembler treat strings.
|
|
s/^([A-Za-z_]\w*)[ \t]+DCB[ \t]*\"/$1: .ascii \"/ && do { s/\$\$/\$/g; next };
|
|
s/\bDCB\b[ \t]*\"/.ascii \"/ && do { s/\$\$/\$/g; next };
|
|
s/^(\S+)\s+RN\s+(\S+)/$1 .req r$2/ && do { s/\$\$/\$/g; next };
|
|
# If there's nothing on a line but a comment, don't try to apply any further
|
|
# substitutions (this is a cheap hack to avoid mucking up the license header)
|
|
s/^([ \t]*);/$1@/ && do { s/\$\$/\$/g; next };
|
|
# If substituted -- leave immediately !
|
|
|
|
s/@/,:/;
|
|
s/;/@/;
|
|
while ( /@.*'/ ) {
|
|
s/(@.*)'/$1/g;
|
|
}
|
|
s/\{FALSE\}/0/g;
|
|
s/\{TRUE\}/1/g;
|
|
s/\{(\w\w\w\w+)\}/$1/g;
|
|
s/\bINCLUDE[ \t]*([^ \t\n]+)/.include \"$1\"/;
|
|
s/\bGET[ \t]*([^ \t\n]+)/.include \"${ my $x=$1; $x =~ s|\.s|-gnu.S|; \$x }\"/;
|
|
s/\bIMPORT\b/.extern/;
|
|
s/\bEXPORT\b\s*/.global $symprefix/;
|
|
s/^(\s+)\[/$1IF/;
|
|
s/^(\s+)\|/$1ELSE/;
|
|
s/^(\s+)\]/$1ENDIF/;
|
|
s/IF *:DEF:/ .ifdef/;
|
|
s/IF *:LNOT: *:DEF:/ .ifndef/;
|
|
s/ELSE/ .else/;
|
|
s/ENDIF/ .endif/;
|
|
|
|
if( /\bIF\b/ ) {
|
|
s/\bIF\b/ .if/;
|
|
s/=/==/;
|
|
}
|
|
if ( $n == 2) {
|
|
s/\$/\\/g;
|
|
}
|
|
if ($n == 1) {
|
|
s/\$//g;
|
|
s/label//g;
|
|
$n = 2;
|
|
}
|
|
if ( /MACRO/ ) {
|
|
s/MACRO *\n/.macro/;
|
|
$n=1;
|
|
}
|
|
if ( /\bMEND\b/ ) {
|
|
s/\bMEND\b/.endm/;
|
|
$n=0;
|
|
}
|
|
|
|
# ".rdata" doesn't work in 'as' version 2.13.2, as it is ".rodata" there.
|
|
#
|
|
if ( /\bAREA\b/ ) {
|
|
my $align;
|
|
$align = "2";
|
|
if ( /ALIGN=(\d+)/ ) {
|
|
$align = $1;
|
|
}
|
|
if ( /CODE/ ) {
|
|
$nxstack = 1;
|
|
}
|
|
s/^(.+)CODE(.+)READONLY(.*)/ .text/;
|
|
s/^(.+)DATA(.+)READONLY(.*)/ .section .rdata/;
|
|
s/^(.+)\|\|\.data\|\|(.+)/ .data/;
|
|
s/^(.+)\|\|\.bss\|\|(.+)/ .bss/;
|
|
s/$/; .p2align $align/;
|
|
# Enable NEON instructions but don't produce a binary that requires
|
|
# ARMv7. RVCT does not have equivalent directives, so we just do this
|
|
# for all CODE areas.
|
|
if ( /.text/ ) {
|
|
# Separating .arch, .fpu, etc., by semicolons does not work (gas
|
|
# thinks the semicolon is part of the arch name, even when there's
|
|
# whitespace separating them). Sadly this means our line numbers
|
|
# won't match the original source file (we could use the .line
|
|
# directive, which is documented to be obsolete, but then gdb will
|
|
# show the wrong line in the translated source file).
|
|
s/$/; .arch armv7-a\n .fpu neon\n .object_arch armv4t/ unless ($apple);
|
|
}
|
|
}
|
|
|
|
s/\|\|\.constdata\$(\d+)\|\|/.L_CONST$1/; # ||.constdata$3||
|
|
s/\|\|\.bss\$(\d+)\|\|/.L_BSS$1/; # ||.bss$2||
|
|
s/\|\|\.data\$(\d+)\|\|/.L_DATA$1/; # ||.data$2||
|
|
s/\|\|([a-zA-Z0-9_]+)\@([a-zA-Z0-9_]+)\|\|/@ $&/;
|
|
s/^(\s+)\%(\s)/ .space $1/;
|
|
|
|
s/\|(.+)\.(\d+)\|/\.$1_$2/; # |L80.123| -> .L80_123
|
|
s/\bCODE32\b/.code 32/ && do {$thumb = 0};
|
|
s/\bCODE16\b/.code 16/ && do {$thumb = 1};
|
|
if (/\bPROC\b/)
|
|
{
|
|
my $prefix;
|
|
my $proc;
|
|
/^([A-Za-z_\.]\w+)\b/;
|
|
$proc = $1;
|
|
$prefix = "";
|
|
if ($proc)
|
|
{
|
|
$prefix = $prefix.sprintf("\t.type\t%s, %%function; ",$proc) unless ($apple);
|
|
# Make sure we $prefix isn't empty here (for the $apple case).
|
|
# We handle mangling the label here, make sure it doesn't match
|
|
# the label handling below (if $prefix would be empty).
|
|
$prefix = "; ";
|
|
push(@proc_stack, $proc);
|
|
s/^[A-Za-z_\.]\w+/$symprefix$&:/;
|
|
}
|
|
$prefix = $prefix."\t.thumb_func; " if ($thumb);
|
|
s/\bPROC\b/@ $&/;
|
|
$_ = $prefix.$_;
|
|
}
|
|
s/^(\s*)(S|Q|SH|U|UQ|UH)ASX\b/$1$2ADDSUBX/;
|
|
s/^(\s*)(S|Q|SH|U|UQ|UH)SAX\b/$1$2SUBADDX/;
|
|
if (/\bENDP\b/)
|
|
{
|
|
my $proc;
|
|
s/\bENDP\b/@ $&/;
|
|
$proc = pop(@proc_stack);
|
|
$_ = "\t.size $proc, .-$proc".$_ if ($proc && !$apple);
|
|
}
|
|
s/\bSUBT\b/@ $&/;
|
|
s/\bDATA\b/@ $&/; # DATA directive is deprecated -- Asm guide, p.7-25
|
|
s/\bKEEP\b/@ $&/;
|
|
s/\bEXPORTAS\b/@ $&/;
|
|
s/\|\|(.)+\bEQU\b/@ $&/;
|
|
s/\|\|([\w\$]+)\|\|/$1/;
|
|
s/\bENTRY\b/@ $&/;
|
|
s/\bASSERT\b/@ $&/;
|
|
s/\bGBLL\b/@ $&/;
|
|
s/\bGBLA\b/@ $&/;
|
|
s/^\W+OPT\b/@ $&/;
|
|
s/:OR:/|/g;
|
|
s/:SHL:/<</g;
|
|
s/:SHR:/>>/g;
|
|
s/:AND:/&/g;
|
|
s/:LAND:/&&/g;
|
|
s/CPSR/cpsr/;
|
|
s/SPSR/spsr/;
|
|
s/ALIGN$/.balign 4/;
|
|
s/ALIGN\s+([0-9x]+)$/.balign $1/;
|
|
s/psr_cxsf/psr_all/;
|
|
s/LTORG/.ltorg/;
|
|
s/^([A-Za-z_]\w*)[ \t]+EQU/ .set $1,/;
|
|
s/^([A-Za-z_]\w*)[ \t]+SETL/ .set $1,/;
|
|
s/^([A-Za-z_]\w*)[ \t]+SETA/ .set $1,/;
|
|
s/^([A-Za-z_]\w*)[ \t]+\*/ .set $1,/;
|
|
|
|
# {PC} + 0xdeadfeed --> . + 0xdeadfeed
|
|
s/\{PC\} \+/ \. +/;
|
|
|
|
# Single hex constant on the line !
|
|
#
|
|
# >>> NOTE <<<
|
|
# Double-precision floats in gcc are always mixed-endian, which means
|
|
# bytes in two words are little-endian, but words are big-endian.
|
|
# So, 0x0000deadfeed0000 would be stored as 0x0000dead at low address
|
|
# and 0xfeed0000 at high address.
|
|
#
|
|
s/\bDCFD\b[ \t]+0x([a-fA-F0-9]{8})([a-fA-F0-9]{8})/.long 0x$1, 0x$2/;
|
|
# Only decimal constants on the line, no hex !
|
|
s/\bDCFD\b[ \t]+([0-9\.\-]+)/.double $1/;
|
|
|
|
# Single hex constant on the line !
|
|
# s/\bDCFS\b[ \t]+0x([a-f0-9]{8})([a-f0-9]{8})/.long 0x$1, 0x$2/;
|
|
# Only decimal constants on the line, no hex !
|
|
# s/\bDCFS\b[ \t]+([0-9\.\-]+)/.double $1/;
|
|
s/\bDCFS[ \t]+0x/.word 0x/;
|
|
s/\bDCFS\b/.float/;
|
|
|
|
s/^([A-Za-z_]\w*)[ \t]+DCD/$1 .word/;
|
|
s/\bDCD\b/.word/;
|
|
s/^([A-Za-z_]\w*)[ \t]+DCW/$1 .short/;
|
|
s/\bDCW\b/.short/;
|
|
s/^([A-Za-z_]\w*)[ \t]+DCB/$1 .byte/;
|
|
s/\bDCB\b/.byte/;
|
|
s/^([A-Za-z_]\w*)[ \t]+\%/.comm $1,/;
|
|
s/^[A-Za-z_\.]\w+/$&:/;
|
|
s/^(\d+)/$1:/;
|
|
s/\%(\d+)/$1b_or_f/;
|
|
s/\%[Bb](\d+)/$1b/;
|
|
s/\%[Ff](\d+)/$1f/;
|
|
s/\%[Ff][Tt](\d+)/$1f/;
|
|
s/&([\dA-Fa-f]+)/0x$1/;
|
|
if ( /\b2_[01]+\b/ ) {
|
|
s/\b2_([01]+)\b/conv$1&&&&/g;
|
|
while ( /[01][01][01][01]&&&&/ ) {
|
|
s/0000&&&&/&&&&0/g;
|
|
s/0001&&&&/&&&&1/g;
|
|
s/0010&&&&/&&&&2/g;
|
|
s/0011&&&&/&&&&3/g;
|
|
s/0100&&&&/&&&&4/g;
|
|
s/0101&&&&/&&&&5/g;
|
|
s/0110&&&&/&&&&6/g;
|
|
s/0111&&&&/&&&&7/g;
|
|
s/1000&&&&/&&&&8/g;
|
|
s/1001&&&&/&&&&9/g;
|
|
s/1010&&&&/&&&&A/g;
|
|
s/1011&&&&/&&&&B/g;
|
|
s/1100&&&&/&&&&C/g;
|
|
s/1101&&&&/&&&&D/g;
|
|
s/1110&&&&/&&&&E/g;
|
|
s/1111&&&&/&&&&F/g;
|
|
}
|
|
s/000&&&&/&&&&0/g;
|
|
s/001&&&&/&&&&1/g;
|
|
s/010&&&&/&&&&2/g;
|
|
s/011&&&&/&&&&3/g;
|
|
s/100&&&&/&&&&4/g;
|
|
s/101&&&&/&&&&5/g;
|
|
s/110&&&&/&&&&6/g;
|
|
s/111&&&&/&&&&7/g;
|
|
s/00&&&&/&&&&0/g;
|
|
s/01&&&&/&&&&1/g;
|
|
s/10&&&&/&&&&2/g;
|
|
s/11&&&&/&&&&3/g;
|
|
s/0&&&&/&&&&0/g;
|
|
s/1&&&&/&&&&1/g;
|
|
s/conv&&&&/0x/g;
|
|
}
|
|
|
|
if ( /commandline/)
|
|
{
|
|
if( /-bigend/)
|
|
{
|
|
$bigend=1;
|
|
}
|
|
}
|
|
|
|
if ( /\bDCDU\b/ )
|
|
{
|
|
my $cmd=$_;
|
|
my $value;
|
|
my $prefix;
|
|
my $w1;
|
|
my $w2;
|
|
my $w3;
|
|
my $w4;
|
|
|
|
s/\s+DCDU\b/@ $&/;
|
|
|
|
$cmd =~ /\bDCDU\b\s+0x(\d+)/;
|
|
$value = $1;
|
|
$value =~ /(\w\w)(\w\w)(\w\w)(\w\w)/;
|
|
$w1 = $1;
|
|
$w2 = $2;
|
|
$w3 = $3;
|
|
$w4 = $4;
|
|
|
|
if( $bigend ne "")
|
|
{
|
|
# big endian
|
|
$prefix = "\t.byte\t0x".$w1.";".
|
|
"\t.byte\t0x".$w2.";".
|
|
"\t.byte\t0x".$w3.";".
|
|
"\t.byte\t0x".$w4."; ";
|
|
}
|
|
else
|
|
{
|
|
# little endian
|
|
$prefix = "\t.byte\t0x".$w4.";".
|
|
"\t.byte\t0x".$w3.";".
|
|
"\t.byte\t0x".$w2.";".
|
|
"\t.byte\t0x".$w1."; ";
|
|
}
|
|
$_=$prefix.$_;
|
|
}
|
|
|
|
if ( /\badrl\b/i )
|
|
{
|
|
s/\badrl\s+(\w+)\s*,\s*(\w+)/ldr $1,=$2/i;
|
|
$addPadding = 1;
|
|
}
|
|
s/\bEND\b/@ END/;
|
|
} continue {
|
|
printf ("%s", $_) if $printit;
|
|
if ($addPadding != 0)
|
|
{
|
|
printf (" mov r0,r0\n");
|
|
$addPadding = 0;
|
|
}
|
|
}
|
|
#If we had a code section, mark that this object doesn't need an executable
|
|
# stack.
|
|
if ($nxstack && !$apple) {
|
|
printf (" .section\t.note.GNU-stack,\"\",\%\%progbits\n");
|
|
}
|