mirror of
https://github.com/netwide-assembler/nasm.git
synced 2025-03-19 18:00:23 +08:00
Drop the index tables from the canned macros
Instead of an array of strings, just have a character array; that reduces the size of canned macros by up to 30%, and we only did sequential access anyway.
This commit is contained in:
H. Peter Anvin
parent
f221b9ee08
commit
cda816306d
55
macros.pl
55
macros.pl
@ -10,11 +10,30 @@
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require 'phash.ph';
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require 'pptok.ph';
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use bytes;
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my $fname;
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my $line = 0;
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my $index = 0;
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my $tasm_count = 0;
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#
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# Print out a string as a character array
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#
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sub charcify(@) {
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my $l = '';
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my $c, $o;
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foreach $o (unpack("C*", join('',@_))) {
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$c = pack("C", $o);
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if ($o < 32 || $o > 126 || $c eq '"' || $c eq "\\") {
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$l .= sprintf("(char)%3d,", $o);
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} else {
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$l .= "\'".$c."\',";
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}
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}
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return $l;
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}
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#
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# Generate macros.c
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#
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@ -22,14 +41,14 @@ open(OUT,">macros.c") or die "unable to open macros.c\n";
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print OUT "/*\n";
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print OUT " * Do not edit - this file auto-generated by macros.pl from:\n";
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print OUT " * ", join(' ', @ARGV), "\n";
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print OUT " * ", join("\n * ", @ARGV), "\n";
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print OUT " */\n";
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print OUT "\n";
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print OUT "#include \"tables.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 "\n";
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print OUT "const char * const nasm_stdmac[] = {";
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print OUT "const char nasm_stdmac[] = {";
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my $npkg = 0;
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my @pkg_list = ();
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@ -38,6 +57,7 @@ my $pkg;
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my @out_list = ();
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my $outfmt;
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my $lastname;
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my $z;
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foreach $fname ( @ARGV ) {
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open(INPUT,$fname) or die "unable to open $fname\n";
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@ -50,10 +70,10 @@ foreach $fname ( @ARGV ) {
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} elsif (m/^OUT:\s*(.*\S)\s*$/) {
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undef $pkg;
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my @out_alias = split(/\s+/, $1);
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printf OUT " /* %4d */ NULL\n", $index++;
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printf OUT " /* %4d */ 0\n", $index++;
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print OUT "};\n";
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$index = 0;
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printf OUT "const char * const %s_stdmac[] = {\n", $out_alias[0];
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printf OUT "const char %s_stdmac[] = {\n", $out_alias[0];
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print OUT " /* From $fname */\n";
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$lastname = $fname;
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push(@out_list, $out_alias[0]);
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@ -63,23 +83,20 @@ foreach $fname ( @ARGV ) {
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if (defined($pkg_number{$pkg})) {
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die "$0: $fname: duplicate package: $pkg\n";
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}
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printf OUT " /* %4d */ NULL,\n", $index++;
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printf OUT " /* %4d */ 0\n", $index++;
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print OUT "};\n";
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$index = 0;
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printf OUT "static const char * const nasm_stdmac_%s[] = {\n", $pkg;
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printf OUT "static const char nasm_stdmac_%s[] = {\n", $pkg;
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print OUT " /* From $fname */\n";
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$lastname = $fname;
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push(@pkg_list, $pkg);
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$pkg_number{$pkg} = $npkg++;
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$pkg_index{$pkg} = $index;
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printf OUT " /* %4d */ \"\\x%02x\"\"%s\",\n",
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$index++, $pptok_hash{'%define'}+128, "__USE_\U$pkg\E__";
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$z = pack("C", $pptok_hash{'%define'}+128)."__USE_\U$pkg\E__";
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printf OUT " /* %4d */ %s0,\n", $index, charcify($z);
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$index += length($z)+1;
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} elsif (m/^\s*((\s*([^\"\';\s]+|\"[^\"]*\"|\'[^\']*\'))*)\s*(;.*)?$/) {
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my $s1, $s2, $pd, $ws;
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$s1 = $1;
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$s1 =~ s/(\s)\s+/$1/g;
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$s1 =~ s/\\/\\\\/g;
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$s1 =~ s/"/\\"/g;
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$s2 = '';
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while ($s1 =~ /(\%[a-zA-Z_][a-zA-Z0-9_]*)((\s+)(.*)|)$/) {
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$s2 .= "$'";
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@ -88,7 +105,7 @@ foreach $fname ( @ARGV ) {
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$s1 = $4;
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if (defined($pptok_hash{$pd}) &&
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$pptok_hash{$pd} <= 127) {
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$s2 .= sprintf("\\x%02x\"\"", $pptok_hash{$pd}+128);
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$s2 .= pack("C", $pptok_hash{$pd}+128);
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} else {
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$s2 .= $pd.$ws;
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}
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@ -99,7 +116,9 @@ foreach $fname ( @ARGV ) {
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print OUT "\n /* From $fname */\n";
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$lastname = $fname;
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}
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printf OUT " /* %4d */ \"%s\",\n", $index++, $s2;
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printf OUT " /* %4d */ %s0,\n",
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$index, charcify($s2);
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$index += length($s2)+1;
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}
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} else {
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die "$fname:$line: error unterminated quote";
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@ -107,8 +126,8 @@ foreach $fname ( @ARGV ) {
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}
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close(INPUT);
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}
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printf OUT " /* %4d */ NULL\n};\n\n", $index++;
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print OUT "const char * const * const nasm_stdmac_after_tasm = ",
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printf OUT " /* %4d */ 0\n};\n\n", $index++;
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print OUT "const char * const nasm_stdmac_after_tasm = ",
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"&nasm_stdmac[$tasm_count];\n\n";
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my @hashinfo = gen_perfect_hash(\%pkg_number);
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@ -120,11 +139,11 @@ verify_hash_table(\%pkg_number, \@hashinfo);
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my ($n, $sv, $g) = @hashinfo;
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die if ($n & ($n-1));
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print OUT "const char * const *nasm_stdmac_find_package(const char *package)\n";
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print OUT "const char *nasm_stdmac_find_package(const char *package)\n";
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print OUT "{\n";
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print OUT " static const struct {\n";
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print OUT " const char *package;\n";
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print OUT " const char * const *macros;\n";
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print OUT " const char *macros;\n";
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print OUT " } packages[$npkg] = {\n";
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foreach $pkg (@pkg_list) {
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printf OUT " { \"%s\", nasm_stdmac_%s },\n",
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16
preproc.c
16
preproc.c
@ -362,13 +362,13 @@ static MMacro *defining;
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* The standard macro set: defined in macros.c in the array nasm_stdmac.
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* This gives our position in the macro set, when we're processing it.
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*/
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static const char * const *stdmacpos;
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static const macros_t *stdmacpos;
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/*
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* The extra standard macros that come from the object format, if
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* any.
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*/
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static const char * const *extrastdmac = NULL;
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static const macros_t *extrastdmac = NULL;
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static bool any_extrastdmac;
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/*
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@ -642,10 +642,9 @@ static char *read_line(void)
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if (stdmacpos) {
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unsigned char c;
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const char *p = stdmacpos;
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char *ret, *q;
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const char *smac = *stdmacpos++, *p;
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size_t len = 0;
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p = smac;
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while ((c = *p++)) {
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if (c >= 0x80)
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len += pp_directives_len[c-0x80]+1;
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@ -653,8 +652,8 @@ static char *read_line(void)
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len++;
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}
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ret = nasm_malloc(len+1);
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p = smac; q = ret;
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while ((c = *p++)) {
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q = ret;
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while ((c = *stdmacpos++)) {
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if (c >= 0x80) {
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memcpy(q, pp_directives[c-0x80], pp_directives_len[c-0x80]);
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q += pp_directives_len[c-0x80];
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@ -663,6 +662,7 @@ static char *read_line(void)
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*q++ = c;
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}
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}
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stdmacpos = p;
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*q = '\0';
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if (!*stdmacpos) {
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@ -2153,7 +2153,7 @@ static int do_directive(Token * tline)
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case PP_USE:
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{
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static const char * const *use_pkg;
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static const char *use_pkg;
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const char *pkg_macro;
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t = tline->next = expand_smacro(tline->next);
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@ -2175,7 +2175,7 @@ static int do_directive(Token * tline)
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if (!use_pkg)
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error(ERR_NONFATAL, "unknown `%%use' package: %s", t->text);
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/* The first string will be <%define>__USE_*__ */
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pkg_macro = *use_pkg + 1;
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pkg_macro = use_pkg + 1;
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if (!smacro_defined(NULL, pkg_macro, 0, NULL, true)) {
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/* Not already included, go ahead and include it */
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stdmacpos = use_pkg;
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@ -15,7 +15,7 @@ extern const char * const pp_directives[];
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extern const int pp_directives_len[];
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/* Pointer to a macro chain */
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typedef const char * const macros_t;
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typedef const char macros_t;
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enum preproc_token pp_token_hash(const char *token);
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void pp_include_path(char *);
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6
tables.h
6
tables.h
@ -14,9 +14,9 @@
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/* --- From standard.mac via macros.pl: --- */
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/* macros.c */
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extern const char * const nasm_stdmac[];
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extern const char * const * const nasm_stdmac_after_tasm;
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const char * const *nasm_stdmac_find_package(const char *);
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extern const char nasm_stdmac[];
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extern const char * const nasm_stdmac_after_tasm;
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const char *nasm_stdmac_find_package(const char *);
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/* --- From insns.dat via insns.pl: --- */
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