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
|
#!/usr/bin/perl -w
# -----------------------------------------------------------------------------
my $cc = $ENV{'REAL_CC'} || 'cc';
my $check = $ENV{'CHECK'} || 'check';
my $m64 = 0;
my $seen_a_c_file = 0;
my $has_specs = 0;
foreach (@ARGV) {
# Look for a .c file. We don't want to run the checker on .o or .so files
# in the link run. (This simplistic check knows nothing about options
# with arguments, but it seems to do the job.)
$seen_a_c_file = 1 if /^[^-].*\.c$/;
$m64 = 1 if /^-m64$/;
if (/^-specs=(.*)$/) {
$check .= &add_specs ($1);
$has_specs = 1;
}
my $this_arg = ' ' . "e_arg ($_);
$cc .= $this_arg unless &check_only_option ($_);
$check .= $this_arg;
}
my $arch = `uname -m`;
chomp $arch;
if ($arch =~ /^(i.?86|athlon)$/) {
$check .= &integer_types (8, 16, 32, $m64 ? 64 : 32, 64);
$check .= &float_types (1, 1, 21, [24,8], [53,11], [64,15]);
} elsif ($arch =~ /^(sun4u)$/) {
$check .= &integer_types (8, 16, 32, $m64 ? 64 : 32, 64);
$check .= &float_types (1, 1, 33, [24,8], [53,11], [113,15]);
}
if (!$has_specs) {
my $os = `uname -s`;
chomp $os;
$check .= &add_specs (lc $os);
}
# print "$check\n";
# exit 1;
system ($check) if $seen_a_c_file;
exec ($cc);
# -----------------------------------------------------------------------------
# Check if an option is for "check" only.
sub check_only_option {
my ($arg) = @_;
return 1 if $arg =~ /^-W(no-?)?(default-bitfield-sig|bitwise|typesign)$/;
return 1 if $arg =~ /^-specs=/;
return 0;
}
# -----------------------------------------------------------------------------
# Simple arg-quoting function. Just adds backslashes when needed.
sub quote_arg {
my ($arg) = @_;
return "''" if $arg eq '';
return join ('',
map {
m|^[-a-zA-Z0-9._/,=]+$| ? $_ : "\\" . $_;
} (split (//, $arg)));
}
# -----------------------------------------------------------------------------
sub integer_types {
my ($char,@dummy) = @_;
my %pow2m1 =
(8 => '127',
16 => '32767',
32 => '2147483647',
64 => '9223372036854775807',
);
my @types = (['SCHAR',''], ['SHRT',''], ['INT',''], ['LONG','L'], ['LONG_LONG','LL']);
my $result = " -D__CHAR_BIT__=$char";
while (@types) {
my $bits = shift @_;
my ($name,$suffix) = @{ shift @types };
die "$0: wierd number of bits." unless exists $pow2m1{$bits};
$result .= " -D__${name}_MAX__=" . $pow2m1{$bits} . $suffix;
}
return $result;
}
# -----------------------------------------------------------------------------
sub float_types {
my ($has_inf,$has_qnan,$dec_dig,@bitsizes) = @_;
my $result = " -D__FLT_RADIX__=2";
$result .= " -D__FINITE_MATH_ONLY__=" . ($has_inf || $has_qnan ? '0' : '1');
$result .= " -D__DECIMAL_DIG__=$dec_dig";
my %constants =
(24 =>
{
'MIN' => '1.17549435e-38',
'MAX' => '3.40282347e+38',
'EPSILON' => '1.19209290e-7',
'DENORM_MIN' => '1.40129846e-45',
},
53 =>
{
'MIN' => '2.2250738585072014e-308',
'MAX' => '1.7976931348623157e+308',
'EPSILON' => '2.2204460492503131e-16',
'DENORM_MIN' => '4.9406564584124654e-324',
},
64 =>
{
'MIN' => '3.36210314311209350626e-4932',
'MAX' => '1.18973149535723176502e+4932',
'EPSILON' => '1.08420217248550443401e-19',
'DENORM_MIN' => '3.64519953188247460253e-4951',
},
113 =>
{
'MIN' => '3.36210314311209350626267781732175260e-4932',
'MAX' => '1.18973149535723176508575932662800702e+4932',
'EPSILON' => '1.92592994438723585305597794258492732e-34',
'DENORM_MIN' => '6.47517511943802511092443895822764655e-4966',
},
);
my @types = (['FLT','F'], ['DBL',''], ['LDBL','L']);
while (@types) {
my ($mant_bits,$exp_bits) = @{ shift @bitsizes };
my ($name,$suffix) = @{ shift @types };
my $h = $constants{$mant_bits};
die "$0: wierd number of mantissa bits." unless $h;
my $mant_dig = int (($mant_bits - 1) * log (2) / log (10));
my $max_exp = 1 << ($exp_bits - 1);
my $min_exp = 3 - $max_exp;
my $max_10_exp = int ($max_exp * log (2) / log (10));
my $min_10_exp = -int (-$min_exp * log (2) / log (10));
$result .= " -D__${name}_MANT_DIG__=$mant_bits";
$result .= " -D__${name}_DIG__=$mant_dig";
$result .= " -D__${name}_MIN_EXP__='($min_exp)'";
$result .= " -D__${name}_MAX_EXP__=$max_exp";
$result .= " -D__${name}_MIN_10_EXP__='($min_10_exp)'";
$result .= " -D__${name}_MAX_10_EXP__=$max_10_exp";
$result .= " -D__${name}_HAS_INFINITY__=" . ($has_inf ? '1' : '0');
$result .= " -D__${name}_HAS_QUIET_NAN__=" . ($has_qnan ? '1' : '0');;
foreach my $inf (sort keys %$h) {
$result .= " -D__${name}_${inf}__=" . $h->{$inf} . $suffix;
}
}
return $result;
}
# -----------------------------------------------------------------------------
sub add_specs {
my ($spec) = @_;
if ($spec eq 'sunos') {
return &add_specs ('unix') .
&add_specs ('sparc') .
' -D__sun__=1 -D__sun=1 -Dsun=1' .
' -D__svr4__=1 -DSVR4=1' .
' -D__STDC__=0' .
' -D_REENTRANT' .
' -D_SOLARIS_THREADS' .
' -DNULL="((void *)0)"';
} elsif ($spec eq 'linux') {
return &add_specs ('unix') .
' -D__linux__=1 -Dlinux=linux' .
' -D__STDC__=1';
} elsif ($spec eq 'unix') {
return ' -Dunix=1 -D__unix=1 -D__unix__=1';
} elsif ($spec eq 'sparc') {
return ' -Dsparc=1 -D__sparc=1 -D__sparc__=1';
} else {
die "$0: invalid specs: $spec\n";
}
}
# -----------------------------------------------------------------------------
|
