mirror of
https://github.com/netwide-assembler/nasm.git
synced 2024-11-21 03:14:19 +08:00
53f1559c06
In order to make it more likely to compile cleanly with "C90 plus long
long" style compilers, remove existing constructs (mostly commas at
the end of enums) that aren't compliant.
Ironically enough this was most likely an unintentional omission in
C90...
From master branch checkin 7214d18b40
Resolved Conflicts:
output/outelf32.c
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
273 lines
7.6 KiB
Perl
Executable File
273 lines
7.6 KiB
Perl
Executable File
#!/usr/bin/perl
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## --------------------------------------------------------------------------
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##
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## Copyright 1996-2009 The NASM Authors - All Rights Reserved
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## See the file AUTHORS included with the NASM distribution for
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## the specific copyright holders.
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##
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## Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following
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## conditions are met:
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##
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## * Redistributions in binary form must reproduce the above
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## copyright notice, this list of conditions and the following
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## disclaimer in the documentation and/or other materials provided
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## with the distribution.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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## CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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## INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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## DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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## NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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## LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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## CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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## OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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## EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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##
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## --------------------------------------------------------------------------
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#
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# Produce pptok.c, pptok.h and pptok.ph from pptok.dat
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#
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require 'phash.ph';
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my($what, $in, $out) = @ARGV;
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#
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# Read pptok.dat
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#
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open(IN, "< $in") or die "$0: cannot open: $in\n";
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while (defined($line = <IN>)) {
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$line =~ s/\r?\n$//; # Remove trailing \r\n or \n
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$line =~ s/^\s+//; # Remove leading whitespace
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$line =~ s/\s*\#.*$//; # Remove comments and trailing whitespace
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next if ($line eq '');
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if ($line =~ /^\%(.*)\*$/) {
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push(@cctok, $1);
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} elsif ($line =~ /^\%(.*)$/) {
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push(@pptok, $1);
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} elsif ($line =~ /^\*(.*)$/) {
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push(@cond, $1);
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}
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}
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close(IN);
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@cctok = sort @cctok;
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@cond = sort @cond;
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@pptok = sort @pptok;
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# Generate the expanded list including conditionals. The conditionals
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# are at the beginning, padded to a power of 2, with the inverses
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# interspersed; this allows a simple mask to pick out the condition.
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while ((scalar @cond) & (scalar @cond)-1) {
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push(@cond, undef);
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}
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@cptok = ();
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foreach $ct (@cctok) {
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foreach $cc (@cond) {
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if (defined($cc)) {
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push(@cptok, $ct.$cc);
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push(@cptok, $ct.'n'.$cc);
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} else {
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push(@cptok, undef, undef);
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}
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}
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}
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$first_uncond = $pptok[0];
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@pptok = (@cptok, @pptok);
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open(OUT, "> $out") or die "$0: cannot open: $out\n";
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#
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# Output pptok.h
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#
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if ($what eq 'h') {
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print OUT "/* Automatically generated from $in by $0 */\n";
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print OUT "/* Do not edit */\n";
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print OUT "\n";
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print OUT "enum preproc_token {\n";
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$n = 0;
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foreach $pt (@pptok) {
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if (defined($pt)) {
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printf OUT " %-16s = %3d,\n", "PP_\U$pt\E", $n;
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}
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$n++;
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}
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printf OUT " %-16s = %3d\n", 'PP_INVALID', -1;
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print OUT "};\n";
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print OUT "\n";
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print OUT "enum pp_conditional {\n";
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$n = 0;
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$c = '';
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foreach $cc (@cond) {
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if (defined($cc)) {
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printf OUT "$c %-16s = %3d", "PPC_IF\U$cc\E", $n;
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$c = ',';
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}
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$n += 2;
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}
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print OUT "\n};\n\n";
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printf OUT "#define PP_COND(x) ((enum pp_conditional)((x) & 0x%x))\n",
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(scalar(@cond)-1) << 1;
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print OUT "#define PP_IS_COND(x) ((unsigned int)(x) < PP_\U$first_uncond\E)\n";
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print OUT "#define PP_NEGATIVE(x) ((x) & 1)\n";
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print OUT "\n";
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foreach $ct (@cctok) {
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print OUT "#define CASE_PP_\U$ct\E";
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$pref = " \\\n";
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foreach $cc (@cond) {
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if (defined($cc)) {
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print OUT "$pref\tcase PP_\U${ct}${cc}\E: \\\n";
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print OUT "\tcase PP_\U${ct}N${cc}\E";
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$pref = ":\\\n";
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}
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}
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print OUT "\n"; # No colon or newline on the last one
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}
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}
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#
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# Output pptok.c
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#
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if ($what eq 'c') {
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print OUT "/* Automatically generated from $in by $0 */\n";
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print OUT "/* Do not edit */\n";
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print OUT "\n";
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my %tokens = ();
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my @tokendata = ();
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my $n = 0;
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foreach $pt (@pptok) {
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if (defined($pt)) {
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$tokens{'%'.$pt} = $n;
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if ($pt =~ /[\@\[\]\\_]/) {
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# Fail on characters which look like upper-case letters
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# to the quick-and-dirty downcasing in the prehash
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# (see below)
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die "$in: invalid character in token: $pt";
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}
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}
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$n++;
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}
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my @hashinfo = gen_perfect_hash(\%tokens);
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if (!@hashinfo) {
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die "$0: no hash found\n";
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}
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# Paranoia...
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verify_hash_table(\%tokens, \@hashinfo);
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($n, $sv, $g) = @hashinfo;
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$sv2 = $sv+2;
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die if ($n & ($n-1));
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print OUT "#include \"compiler.h\"\n";
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print OUT "#include <inttypes.h>\n";
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print OUT "#include <ctype.h>\n";
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print OUT "#include \"nasmlib.h\"\n";
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print OUT "#include \"hashtbl.h\"\n";
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print OUT "#include \"preproc.h\"\n";
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print OUT "\n";
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# Note that this is global.
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printf OUT "const char * const pp_directives[%d] = {\n", scalar(@pptok);
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foreach $d (@pptok) {
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if (defined($d)) {
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print OUT " \"%$d\",\n";
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} else {
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print OUT " NULL,\n";
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}
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}
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print OUT "};\n";
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printf OUT "const uint8_t pp_directives_len[%d] = {\n", scalar(@pptok);
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foreach $d (@pptok) {
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printf OUT " %d,\n", defined($d) ? length($d)+1 : 0;
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}
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print OUT "};\n";
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print OUT "enum preproc_token pp_token_hash(const char *token)\n";
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print OUT "{\n";
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# Put a large value in unused slots. This makes it extremely unlikely
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# that any combination that involves unused slot will pass the range test.
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# This speeds up rejection of unrecognized tokens, i.e. identifiers.
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print OUT "#define UNUSED (65535/3)\n";
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print OUT " static const int16_t hash1[$n] = {\n";
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for ($i = 0; $i < $n; $i++) {
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my $h = ${$g}[$i*2+0];
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print OUT " ", defined($h) ? $h : 'UNUSED', ",\n";
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}
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print OUT " };\n";
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print OUT " static const int16_t hash2[$n] = {\n";
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for ($i = 0; $i < $n; $i++) {
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my $h = ${$g}[$i*2+1];
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print OUT " ", defined($h) ? $h : 'UNUSED', ",\n";
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}
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print OUT " };\n";
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print OUT " uint32_t k1, k2;\n";
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print OUT " uint64_t crc;\n";
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# For correct overflow behavior, "ix" should be unsigned of the same
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# width as the hash arrays.
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print OUT " uint16_t ix;\n";
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print OUT "\n";
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printf OUT " crc = crc64i(UINT64_C(0x%08x%08x), token);\n",
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$$sv[0], $$sv[1];
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print OUT " k1 = (uint32_t)crc;\n";
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print OUT " k2 = (uint32_t)(crc >> 32);\n";
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print OUT "\n";
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printf OUT " ix = hash1[k1 & 0x%x] + hash2[k2 & 0x%x];\n", $n-1, $n-1;
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printf OUT " if (ix >= %d)\n", scalar(@pptok);
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print OUT " return PP_INVALID;\n";
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print OUT "\n";
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print OUT " if (!pp_directives[ix] || nasm_stricmp(pp_directives[ix], token))\n";
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print OUT " return PP_INVALID;\n";
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print OUT "\n";
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print OUT " return ix;\n";
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print OUT "}\n";
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}
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#
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# Output pptok.ph
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#
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if ($what eq 'ph') {
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print OUT "# Automatically generated from $in by $0\n";
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print OUT "# Do not edit\n";
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print OUT "\n";
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print OUT "%pptok_hash = (\n";
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$n = 0;
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foreach $tok (@pptok) {
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if (defined($tok)) {
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printf OUT " '%%%s' => %d,\n", $tok, $n;
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}
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$n++;
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}
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print OUT ");\n";
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print OUT "1;\n";
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}
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