1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libtheora/lib/arm/arm2gnu.pl Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,281 @@
1.4 +#!/usr/bin/perl
1.5 +
1.6 +my $bigend; # little/big endian
1.7 +my $nxstack;
1.8 +
1.9 +$nxstack = 0;
1.10 +
1.11 +eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
1.12 + if $running_under_some_shell;
1.13 +
1.14 +while ($ARGV[0] =~ /^-/) {
1.15 + $_ = shift;
1.16 + last if /^--/;
1.17 + if (/^-n/) {
1.18 + $nflag++;
1.19 + next;
1.20 + }
1.21 + die "I don't recognize this switch: $_\\n";
1.22 +}
1.23 +$printit++ unless $nflag;
1.24 +
1.25 +$\ = "\n"; # automatically add newline on print
1.26 +$n=0;
1.27 +
1.28 +$thumb = 0; # ARM mode by default, not Thumb.
1.29 +
1.30 +LINE:
1.31 +while (<>) {
1.32 +
1.33 + # For ADRLs we need to add a new line after the substituted one.
1.34 + $addPadding = 0;
1.35 +
1.36 + # First, we do not dare to touch *anything* inside double quotes, do we?
1.37 + # Second, if you want a dollar character in the string,
1.38 + # insert two of them -- that's how ARM C and assembler treat strings.
1.39 + s/^([A-Za-z_]\w*)[ \t]+DCB[ \t]*\"/$1: .ascii \"/ && do { s/\$\$/\$/g; next };
1.40 + s/\bDCB\b[ \t]*\"/.ascii \"/ && do { s/\$\$/\$/g; next };
1.41 + s/^(\S+)\s+RN\s+(\S+)/$1 .req r$2/ && do { s/\$\$/\$/g; next };
1.42 + # If there's nothing on a line but a comment, don't try to apply any further
1.43 + # substitutions (this is a cheap hack to avoid mucking up the license header)
1.44 + s/^([ \t]*);/$1@/ && do { s/\$\$/\$/g; next };
1.45 + # If substituted -- leave immediately !
1.46 +
1.47 + s/@/,:/;
1.48 + s/;/@/;
1.49 + while ( /@.*'/ ) {
1.50 + s/(@.*)'/$1/g;
1.51 + }
1.52 + s/\{FALSE\}/0/g;
1.53 + s/\{TRUE\}/1/g;
1.54 + s/\{(\w\w\w\w+)\}/$1/g;
1.55 + s/\bINCLUDE[ \t]*([^ \t\n]+)/.include \"$1\"/;
1.56 + s/\bGET[ \t]*([^ \t\n]+)/.include \"${ my $x=$1; $x =~ s|\.s|-gnu.S|; \$x }\"/;
1.57 + s/\bIMPORT\b/.extern/;
1.58 + s/\bEXPORT\b/.global/;
1.59 + s/^(\s+)\[/$1IF/;
1.60 + s/^(\s+)\|/$1ELSE/;
1.61 + s/^(\s+)\]/$1ENDIF/;
1.62 + s/IF *:DEF:/ .ifdef/;
1.63 + s/IF *:LNOT: *:DEF:/ .ifndef/;
1.64 + s/ELSE/ .else/;
1.65 + s/ENDIF/ .endif/;
1.66 +
1.67 + if( /\bIF\b/ ) {
1.68 + s/\bIF\b/ .if/;
1.69 + s/=/==/;
1.70 + }
1.71 + if ( $n == 2) {
1.72 + s/\$/\\/g;
1.73 + }
1.74 + if ($n == 1) {
1.75 + s/\$//g;
1.76 + s/label//g;
1.77 + $n = 2;
1.78 + }
1.79 + if ( /MACRO/ ) {
1.80 + s/MACRO *\n/.macro/;
1.81 + $n=1;
1.82 + }
1.83 + if ( /\bMEND\b/ ) {
1.84 + s/\bMEND\b/.endm/;
1.85 + $n=0;
1.86 + }
1.87 +
1.88 + # ".rdata" doesn't work in 'as' version 2.13.2, as it is ".rodata" there.
1.89 + #
1.90 + if ( /\bAREA\b/ ) {
1.91 + if ( /CODE/ ) {
1.92 + $nxstack = 1;
1.93 + }
1.94 + s/^(.+)CODE(.+)READONLY(.*)/ .text/;
1.95 + s/^(.+)DATA(.+)READONLY(.*)/ .section .rdata\n .align 2/;
1.96 + s/^(.+)\|\|\.data\|\|(.+)/ .data\n .align 2/;
1.97 + s/^(.+)\|\|\.bss\|\|(.+)/ .bss/;
1.98 + }
1.99 +
1.100 + s/\|\|\.constdata\$(\d+)\|\|/.L_CONST$1/; # ||.constdata$3||
1.101 + s/\|\|\.bss\$(\d+)\|\|/.L_BSS$1/; # ||.bss$2||
1.102 + s/\|\|\.data\$(\d+)\|\|/.L_DATA$1/; # ||.data$2||
1.103 + s/\|\|([a-zA-Z0-9_]+)\@([a-zA-Z0-9_]+)\|\|/@ $&/;
1.104 + s/^(\s+)\%(\s)/ .space $1/;
1.105 +
1.106 + s/\|(.+)\.(\d+)\|/\.$1_$2/; # |L80.123| -> .L80_123
1.107 + s/\bCODE32\b/.code 32/ && do {$thumb = 0};
1.108 + s/\bCODE16\b/.code 16/ && do {$thumb = 1};
1.109 + if (/\bPROC\b/)
1.110 + {
1.111 + print " .thumb_func" if ($thumb);
1.112 + s/\bPROC\b/@ $&/;
1.113 + }
1.114 + s/^(\s*)(S|Q|SH|U|UQ|UH)ASX\b/$1$2ADDSUBX/;
1.115 + s/^(\s*)(S|Q|SH|U|UQ|UH)SAX\b/$1$2SUBADDX/;
1.116 + s/\bENDP\b/@ $&/;
1.117 + s/\bSUBT\b/@ $&/;
1.118 + s/\bDATA\b/@ $&/; # DATA directive is deprecated -- Asm guide, p.7-25
1.119 + s/\bKEEP\b/@ $&/;
1.120 + s/\bEXPORTAS\b/@ $&/;
1.121 + s/\|\|(.)+\bEQU\b/@ $&/;
1.122 + s/\|\|([\w\$]+)\|\|/$1/;
1.123 + s/\bENTRY\b/@ $&/;
1.124 + s/\bASSERT\b/@ $&/;
1.125 + s/\bGBLL\b/@ $&/;
1.126 + s/\bGBLA\b/@ $&/;
1.127 + s/^\W+OPT\b/@ $&/;
1.128 + s/:OR:/|/g;
1.129 + s/:SHL:/<</g;
1.130 + s/:SHR:/>>/g;
1.131 + s/:AND:/&/g;
1.132 + s/:LAND:/&&/g;
1.133 + s/CPSR/cpsr/;
1.134 + s/SPSR/spsr/;
1.135 + s/ALIGN$/.balign 4/;
1.136 + s/ALIGN\s+([0-9x]+)$/.balign $1/;
1.137 + s/psr_cxsf/psr_all/;
1.138 + s/LTORG/.ltorg/;
1.139 + s/^([A-Za-z_]\w*)[ \t]+EQU/ .set $1,/;
1.140 + s/^([A-Za-z_]\w*)[ \t]+SETL/ .set $1,/;
1.141 + s/^([A-Za-z_]\w*)[ \t]+SETA/ .set $1,/;
1.142 + s/^([A-Za-z_]\w*)[ \t]+\*/ .set $1,/;
1.143 +
1.144 + # {PC} + 0xdeadfeed --> . + 0xdeadfeed
1.145 + s/\{PC\} \+/ \. +/;
1.146 +
1.147 + # Single hex constant on the line !
1.148 + #
1.149 + # >>> NOTE <<<
1.150 + # Double-precision floats in gcc are always mixed-endian, which means
1.151 + # bytes in two words are little-endian, but words are big-endian.
1.152 + # So, 0x0000deadfeed0000 would be stored as 0x0000dead at low address
1.153 + # and 0xfeed0000 at high address.
1.154 + #
1.155 + s/\bDCFD\b[ \t]+0x([a-fA-F0-9]{8})([a-fA-F0-9]{8})/.long 0x$1, 0x$2/;
1.156 + # Only decimal constants on the line, no hex !
1.157 + s/\bDCFD\b[ \t]+([0-9\.\-]+)/.double $1/;
1.158 +
1.159 + # Single hex constant on the line !
1.160 +# s/\bDCFS\b[ \t]+0x([a-f0-9]{8})([a-f0-9]{8})/.long 0x$1, 0x$2/;
1.161 + # Only decimal constants on the line, no hex !
1.162 +# s/\bDCFS\b[ \t]+([0-9\.\-]+)/.double $1/;
1.163 + s/\bDCFS[ \t]+0x/.word 0x/;
1.164 + s/\bDCFS\b/.float/;
1.165 +
1.166 + s/^([A-Za-z_]\w*)[ \t]+DCD/$1 .word/;
1.167 + s/\bDCD\b/.word/;
1.168 + s/^([A-Za-z_]\w*)[ \t]+DCW/$1 .short/;
1.169 + s/\bDCW\b/.short/;
1.170 + s/^([A-Za-z_]\w*)[ \t]+DCB/$1 .byte/;
1.171 + s/\bDCB\b/.byte/;
1.172 + s/^([A-Za-z_]\w*)[ \t]+\%/.comm $1,/;
1.173 + s/^[A-Za-z_\.]\w+/$&:/;
1.174 + s/^(\d+)/$1:/;
1.175 + s/\%(\d+)/$1b_or_f/;
1.176 + s/\%[Bb](\d+)/$1b/;
1.177 + s/\%[Ff](\d+)/$1f/;
1.178 + s/\%[Ff][Tt](\d+)/$1f/;
1.179 + s/&([\dA-Fa-f]+)/0x$1/;
1.180 + if ( /\b2_[01]+\b/ ) {
1.181 + s/\b2_([01]+)\b/conv$1&&&&/g;
1.182 + while ( /[01][01][01][01]&&&&/ ) {
1.183 + s/0000&&&&/&&&&0/g;
1.184 + s/0001&&&&/&&&&1/g;
1.185 + s/0010&&&&/&&&&2/g;
1.186 + s/0011&&&&/&&&&3/g;
1.187 + s/0100&&&&/&&&&4/g;
1.188 + s/0101&&&&/&&&&5/g;
1.189 + s/0110&&&&/&&&&6/g;
1.190 + s/0111&&&&/&&&&7/g;
1.191 + s/1000&&&&/&&&&8/g;
1.192 + s/1001&&&&/&&&&9/g;
1.193 + s/1010&&&&/&&&&A/g;
1.194 + s/1011&&&&/&&&&B/g;
1.195 + s/1100&&&&/&&&&C/g;
1.196 + s/1101&&&&/&&&&D/g;
1.197 + s/1110&&&&/&&&&E/g;
1.198 + s/1111&&&&/&&&&F/g;
1.199 + }
1.200 + s/000&&&&/&&&&0/g;
1.201 + s/001&&&&/&&&&1/g;
1.202 + s/010&&&&/&&&&2/g;
1.203 + s/011&&&&/&&&&3/g;
1.204 + s/100&&&&/&&&&4/g;
1.205 + s/101&&&&/&&&&5/g;
1.206 + s/110&&&&/&&&&6/g;
1.207 + s/111&&&&/&&&&7/g;
1.208 + s/00&&&&/&&&&0/g;
1.209 + s/01&&&&/&&&&1/g;
1.210 + s/10&&&&/&&&&2/g;
1.211 + s/11&&&&/&&&&3/g;
1.212 + s/0&&&&/&&&&0/g;
1.213 + s/1&&&&/&&&&1/g;
1.214 + s/conv&&&&/0x/g;
1.215 + }
1.216 +
1.217 + if ( /commandline/)
1.218 + {
1.219 + if( /-bigend/)
1.220 + {
1.221 + $bigend=1;
1.222 + }
1.223 + }
1.224 +
1.225 + if ( /\bDCDU\b/ )
1.226 + {
1.227 + my $cmd=$_;
1.228 + my $value;
1.229 + my $w1;
1.230 + my $w2;
1.231 + my $w3;
1.232 + my $w4;
1.233 +
1.234 + s/\s+DCDU\b/@ $&/;
1.235 +
1.236 + $cmd =~ /\bDCDU\b\s+0x(\d+)/;
1.237 + $value = $1;
1.238 + $value =~ /(\w\w)(\w\w)(\w\w)(\w\w)/;
1.239 + $w1 = $1;
1.240 + $w2 = $2;
1.241 + $w3 = $3;
1.242 + $w4 = $4;
1.243 +
1.244 + if( $bigend ne "")
1.245 + {
1.246 + # big endian
1.247 +
1.248 + print " .byte 0x".$w1;
1.249 + print " .byte 0x".$w2;
1.250 + print " .byte 0x".$w3;
1.251 + print " .byte 0x".$w4;
1.252 + }
1.253 + else
1.254 + {
1.255 + # little endian
1.256 +
1.257 + print " .byte 0x".$w4;
1.258 + print " .byte 0x".$w3;
1.259 + print " .byte 0x".$w2;
1.260 + print " .byte 0x".$w1;
1.261 + }
1.262 +
1.263 + }
1.264 +
1.265 +
1.266 + if ( /\badrl\b/i )
1.267 + {
1.268 + s/\badrl\s+(\w+)\s*,\s*(\w+)/ldr $1,=$2/i;
1.269 + $addPadding = 1;
1.270 + }
1.271 + s/\bEND\b/@ END/;
1.272 +} continue {
1.273 + printf ("%s", $_) if $printit;
1.274 + if ($addPadding != 0)
1.275 + {
1.276 + printf (" mov r0,r0\n");
1.277 + $addPadding = 0;
1.278 + }
1.279 +}
1.280 +#If we had a code section, mark that this object doesn't need an executable
1.281 +# stack.
1.282 +if ($nxstack) {
1.283 + printf (" .section\t.note.GNU-stack,\"\",\%\%progbits\n");
1.284 +}
