1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
#!/usr/bin/perl
#
# macros.pl produce macros.c from standard.mac
#
# The Netwide Assembler is copyright (C) 1996 Simon Tatham and
# Julian Hall. All rights reserved. The software is
# redistributable under the license given in the file "LICENSE"
# distributed in the NASM archive.
require 'phash.ph';
require 'pptok.ph';
use bytes;
my $fname;
my $line = 0;
my $index = 0;
my $tasm_count = 0;
#
# Print out a string as a character array
#
sub charcify(@) {
my $l = '';
my $c, $o;
foreach $o (unpack("C*", join('',@_))) {
$c = pack("C", $o);
if ($o < 32 || $o > 126 || $c eq '"' || $c eq "\\") {
$l .= sprintf("%3d,", $o);
} else {
$l .= "\'".$c."\',";
}
}
return $l;
}
#
# Generate macros.c
#
open(OUT,"> macros.c\0") or die "unable to open macros.c\n";
print OUT "/*\n";
print OUT " * Do not edit - this file auto-generated by macros.pl from:\n";
print OUT " * ", join("\n * ", @ARGV), "\n";
print OUT " */\n";
print OUT "\n";
print OUT "#include \"tables.h\"\n";
print OUT "#include \"nasmlib.h\"\n";
print OUT "#include \"hashtbl.h\"\n";
print OUT "#include \"outform.h\"\n";
print OUT "\n";
print OUT "#if 1\n";
print OUT "const unsigned char nasm_stdmac[] = {";
my $npkg = 0;
my @pkg_list = ();
my %pkg_number = ();
my $pkg;
my @out_list = ();
my $outfmt;
my $lastname;
my $z;
foreach $fname ( @ARGV ) {
open(INPUT,"< $fname\0") or die "$0: $fname: $!\n";
while (<INPUT>) {
$line++;
chomp;
while (/^(.*)\\$/) {
$_ = $1;
$_ .= <INPUT>;
chomp;
$line++;
}
if (m/^\s*\*END\*TASM\*MACROS\*\s*$/) {
$tasm_count = $index;
print OUT " /* End of TASM macros */\n";
} elsif (m/^OUT:\s*(.*\S)\s*$/) {
undef $pkg;
my @out_alias = split(/\s+/, $1);
printf OUT " /* %4d */ 0\n", $index++;
print OUT "};\n#endif\n";
$index = 0;
print OUT "\n";
my $pfx = '#if';
foreach my $al (@out_alias) {
print OUT $pfx, " defined(OF_\U${al}\E)";
$pfx = ' ||';
}
printf OUT "\nconst unsigned char %s_stdmac[] = {\n", $out_alias[0];
print OUT " /* From $fname */\n";
$lastname = $fname;
push(@out_list, $out_alias[0]);
$out_index{$out_alias[0]} = $index;
} elsif (m/^USE:\s*(\S+)\s*$/) {
$pkg = $1;
if (defined($pkg_number{$pkg})) {
die "$0: $fname: duplicate package: $pkg\n";
}
printf OUT " /* %4d */ 0\n", $index++;
print OUT "};\n#endif\n";
$index = 0;
print OUT "\n#if 1\n";
printf OUT "static const unsigned char nasm_stdmac_%s[] = {\n", $pkg;
print OUT " /* From $fname */\n";
$lastname = $fname;
push(@pkg_list, $pkg);
$pkg_number{$pkg} = $npkg++;
$z = pack("C", $pptok_hash{'%define'}+128)."__USE_\U$pkg\E__";
printf OUT " /* %4d */ %s0,\n", $index, charcify($z);
$index += length($z)+1;
} elsif (m/^\s*((\s*([^\"\';\s]+|\"[^\"]*\"|\'[^\']*\'))*)\s*(;.*)?$/) {
my $s1, $s2, $pd, $ws;
$s1 = $1;
$s2 = '';
while ($s1 =~ /(\%[a-zA-Z_][a-zA-Z0-9_]*)((\s+)(.*)|)$/) {
$s2 .= "$'";
$pd = $1;
$ws = $3;
$s1 = $4;
if (defined($pptok_hash{$pd}) &&
$pptok_hash{$pd} <= 127) {
$s2 .= pack("C", $pptok_hash{$pd}+128);
} else {
$s2 .= $pd.$ws;
}
}
$s2 .= $s1;
if (length($s2) > 0) {
if ($lastname ne $fname) {
print OUT "\n /* From $fname */\n";
$lastname = $fname;
}
printf OUT " /* %4d */ %s0,\n",
$index, charcify($s2);
$index += length($s2)+1;
}
} else {
die "$fname:$line: error unterminated quote";
}
}
close(INPUT);
}
printf OUT " /* %4d */ 0\n};\n#endif\n\n", $index++;
print OUT "const unsigned char * const nasm_stdmac_after_tasm = ",
"&nasm_stdmac[$tasm_count];\n\n";
my @hashinfo = gen_perfect_hash(\%pkg_number);
if (!@hashinfo) {
die "$0: no hash found\n";
}
# Paranoia...
verify_hash_table(\%pkg_number, \@hashinfo);
my ($n, $sv, $g) = @hashinfo;
die if ($n & ($n-1));
print OUT "const unsigned char *nasm_stdmac_find_package(const char *package)\n";
print OUT "{\n";
print OUT " static const struct {\n";
print OUT " const char *package;\n";
print OUT " const unsigned char *macros;\n";
print OUT " } packages[$npkg] = {\n";
foreach $pkg (@pkg_list) {
printf OUT " { \"%s\", nasm_stdmac_%s },\n",
$pkg, $pkg;
}
print OUT " };\n";
# Put a large value in unused slots. This makes it extremely unlikely
# that any combination that involves unused slot will pass the range test.
# This speeds up rejection of unrecognized tokens, i.e. identifiers.
print OUT "#define UNUSED 16383\n";
print OUT " static const int16_t hash1[$n] = {\n";
for ($i = 0; $i < $n; $i++) {
my $h = ${$g}[$i*2+0];
print OUT " ", defined($h) ? $h : 'UNUSED', ",\n";
}
print OUT " };\n";
print OUT " static const int16_t hash2[$n] = {\n";
for ($i = 0; $i < $n; $i++) {
my $h = ${$g}[$i*2+1];
print OUT " ", defined($h) ? $h : 'UNUSED', ",\n";
}
print OUT " };\n";
print OUT " uint32_t k1, k2;\n";
print OUT " uint64_t crc;\n";
# For correct overflow behavior, "ix" should be unsigned of the same
# width as the hash arrays.
print OUT " uint16_t ix;\n";
print OUT "\n";
printf OUT " crc = crc64i(UINT64_C(0x%08x%08x), package);\n",
$$sv[0], $$sv[1];
print OUT " k1 = (uint32_t)crc;\n";
print OUT " k2 = (uint32_t)(crc >> 32);\n";
print OUT "\n";
printf OUT " ix = hash1[k1 & 0x%x] + hash2[k2 & 0x%x];\n", $n-1, $n-1;
printf OUT " if (ix >= %d)\n", scalar(@pkg_list);
print OUT " return NULL;\n";
print OUT "\n";
print OUT " if (nasm_stricmp(packages[ix].package, package))\n";
print OUT " return NULL;\n";
print OUT "\n";
print OUT " return packages[ix].macros;\n";
print OUT "}\n";
close(OUT);
|
