1 #!/usr/bin/perl -w
2 # -----------------------------------------------------------------------------
3
4 my $cc = $ENV{'REAL_CC'} || 'cc';
5 my $check = $ENV{'CHECK'} || 'sparse';
6 my $ccom = $cc;
7
8 my $m32 = 0;
9 my $m64 = 0;
10 my $has_specs = 0;
11 my $gendeps = 0;
12 my $do_check = 0;
13 my $do_compile = 1;
14 my $gcc_base_dir;
15 my $multiarch_dir;
16 my $verbose = 0;
17
18 while (@ARGV) {
19 $_ = shift(@ARGV);
20 # Look for a .c file. We don't want to run the checker on .o or .so files
21 # in the link run. (This simplistic check knows nothing about options
22 # with arguments, but it seems to do the job.)
23 $do_check = 1 if /^[^-].*\.c$/;
24
25 # Ditto for stdin.
26 $do_check = 1 if $_ eq '-';
27
28 $m32 = 1 if /^-m32$/;
29 $m64 = 1 if /^-m64$/;
30 $gendeps = 1 if /^-M$/;
31
32 if (/^-target=(.*)$/) {
33 $check .= &add_specs ($1);
34 $has_specs = 1;
35 next;
36 }
37
38 if ($_ eq '-no-compile') {
39 $do_compile = 0;
40 next;
41 }
42
43 if (/^-gcc-base-dir$/) {
44 $gcc_base_dir = shift @ARGV;
45 die ("$0: missing argument for -gcc-base-dir option") if !$gcc_base_dir;
46 next;
47 }
48
49 if (/^-multiarch-dir$/) {
50 $multiarch_dir = shift @ARGV;
51 die ("$0: missing argument for -multiarch-dir option") if !$multiarch_dir;
52 next;
53 }
54
55 # If someone adds "-E", don't pre-process twice.
56 $do_compile = 0 if $_ eq '-E';
57
58 $verbose = 1 if $_ eq '-v';
59
60 my $this_arg = ' ' . "e_arg ($_);
61 $cc .= $this_arg unless &check_only_option ($_);
62 $check .= $this_arg;
63 }
64
65 if ($gendeps) {
66 $do_compile = 1;
67 $do_check = 0;
68 }
69
70 if ($do_check) {
71 if (!$has_specs) {
72 $check .= &add_specs ('host_arch_specs');
73 $check .= &add_specs ('host_os_specs');
74 }
75
76 $gcc_base_dir = qx($ccom -print-file-name=) if !$gcc_base_dir;
77 chomp($gcc_base_dir); # possibly remove '\n' from compiler
78 $check .= " -gcc-base-dir " . $gcc_base_dir if $gcc_base_dir;
79
80 $multiarch_dir = qx($ccom -print-multiarch) if ! defined $multiarch_dir;
81 chomp($multiarch_dir); # possibly remove '\n' from compiler
82 $check .= " -multiarch-dir " . $multiarch_dir if $multiarch_dir;
83
84 print "$check\n" if $verbose;
85 if ($do_compile) {
86 system ($check);
87 } else {
88 exec ($check);
89 }
90 }
91
92 if ($do_compile) {
93 print "$cc\n" if $verbose;
94 exec ($cc);
95 }
96
97 exit 0;
98
99 # -----------------------------------------------------------------------------
100 # Check if an option is for "check" only.
101
102 sub check_only_option {
103 my ($arg) = @_;
104 return 1 if $arg =~ /^-W(no-?)?(address-space|bitwise|cast-to-as|cast-truncate|context|decl|default-bitfield-sign|designated-init|do-while|enum-mismatch|external-function-has-definition|init-cstring|memcpy-max-count|non-ansi-function-declaration|non-pointer-null|old-initializer|one-bit-signed-bitfield|override-init-all|paren-string|ptr-subtraction-blows|return-void|sizeof-bool|sparse-all|sparse-error|transparent-union|typesign|undef|unknown-attribute)$/;
105 return 1 if $arg =~ /^-v(no-?)?(entry|dead)$/;
106 return 1 if $arg =~ /^-f(dump-linearize|memcpy-max-count)(=\S*)?$/;
107 return 0;
108 }
109
110 # -----------------------------------------------------------------------------
111 # Simple arg-quoting function. Just adds backslashes when needed.
112
113 sub quote_arg {
114 my ($arg) = @_;
115 return "''" if $arg eq '';
116 return join ('',
117 map {
118 m|^[-a-zA-Z0-9._/,=]+$| ? $_ : "\\" . $_;
119 } (split (//, $arg)));
120 }
121
122 # -----------------------------------------------------------------------------
123
124 sub integer_types {
125 my ($char,@dummy) = @_;
126
127 my %pow2m1 =
128 (8 => '127',
129 16 => '32767',
130 32 => '2147483647',
131 64 => '9223372036854775807',
132 128 => '170141183460469231731687303715884105727',
133 );
134 my @types = (['SCHAR',''], ['SHRT',''], ['INT',''], ['LONG','L'], ['LONG_LONG','LL'], ['LONG_LONG_LONG','LLL']);
135
136 my $result = " -D__CHAR_BIT__=$char";
137 while (@types && @_) {
138 my $bits = shift @_;
139 my ($name,$suffix) = @{ shift @types };
140 die "$0: weird number of bits." unless exists $pow2m1{$bits};
141 $result .= " -D__${name}_MAX__=" . $pow2m1{$bits} . $suffix;
142 }
143 return $result;
144 }
145
146 # -----------------------------------------------------------------------------
147
148 sub float_types {
149 my ($has_inf,$has_qnan,$dec_dig,@bitsizes) = @_;
150 my $result = " -D__FLT_RADIX__=2";
151 $result .= " -D__FINITE_MATH_ONLY__=" . ($has_inf || $has_qnan ? '0' : '1');
152 $result .= " -D__DECIMAL_DIG__=$dec_dig";
153
154 my %constants =
155 (24 =>
156 {
157 'MIN' => '1.17549435e-38',
158 'MAX' => '3.40282347e+38',
159 'EPSILON' => '1.19209290e-7',
160 'DENORM_MIN' => '1.40129846e-45',
161 },
162 53 =>
163 {
164 'MIN' => '2.2250738585072014e-308',
165 'MAX' => '1.7976931348623157e+308',
166 'EPSILON' => '2.2204460492503131e-16',
167 'DENORM_MIN' => '4.9406564584124654e-324',
168 },
169 64 =>
170 {
171 'MIN' => '3.36210314311209350626e-4932',
172 'MAX' => '1.18973149535723176502e+4932',
173 'EPSILON' => '1.08420217248550443401e-19',
174 'DENORM_MIN' => '3.64519953188247460253e-4951',
175 },
176 113 =>
177 {
178 'MIN' => '3.36210314311209350626267781732175260e-4932',
179 'MAX' => '1.18973149535723176508575932662800702e+4932',
180 'EPSILON' => '1.92592994438723585305597794258492732e-34',
181 'DENORM_MIN' => '6.47517511943802511092443895822764655e-4966',
182 },
183 );
184
185 my @types = (['FLT','F'], ['DBL',''], ['LDBL','L']);
186 while (@types) {
187 my ($mant_bits,$exp_bits) = @{ shift @bitsizes };
188 my ($name,$suffix) = @{ shift @types };
189
190 my $h = $constants{$mant_bits};
191 die "$0: weird number of mantissa bits." unless $h;
192
193 my $mant_dig = int (($mant_bits - 1) * log (2) / log (10));
194 my $max_exp = 1 << ($exp_bits - 1);
195 my $min_exp = 3 - $max_exp;
196 my $max_10_exp = int ($max_exp * log (2) / log (10));
197 my $min_10_exp = -int (-$min_exp * log (2) / log (10));
198
199 $result .= " -D__${name}_MANT_DIG__=$mant_bits";
200 $result .= " -D__${name}_DIG__=$mant_dig";
201 $result .= " -D__${name}_MIN_EXP__='($min_exp)'";
202 $result .= " -D__${name}_MAX_EXP__=$max_exp";
203 $result .= " -D__${name}_MIN_10_EXP__='($min_10_exp)'";
204 $result .= " -D__${name}_MAX_10_EXP__=$max_10_exp";
205 $result .= " -D__${name}_HAS_INFINITY__=" . ($has_inf ? '1' : '0');
206 $result .= " -D__${name}_HAS_QUIET_NAN__=" . ($has_qnan ? '1' : '0');;
207
208 foreach my $inf (sort keys %$h) {
209 $result .= " -D__${name}_${inf}__=" . $h->{$inf} . $suffix;
210 }
211 }
212 return $result;
213 }
214
215 # -----------------------------------------------------------------------------
216
217 sub define_size_t {
218 my ($text) = @_;
219 # We have to undef in order to override check's internal definition.
220 return ' -U__SIZE_TYPE__ ' . "e_arg ("-D__SIZE_TYPE__=$text");
221 }
222
223 # -----------------------------------------------------------------------------
224
225 sub add_specs {
226 my ($spec) = @_;
227 if ($spec eq 'sunos') {
228 return &add_specs ('unix') .
229 ' -D__sun__=1 -D__sun=1 -Dsun=1' .
230 ' -D__svr4__=1 -DSVR4=1' .
231 ' -D__STDC__=0' .
232 ' -D_REENTRANT' .
233 ' -D_SOLARIS_THREADS' .
234 ' -DNULL="((void *)0)"';
235 } elsif ($spec eq 'linux') {
236 return &add_specs ('unix') .
237 ' -D__linux__=1 -D__linux=1 -Dlinux=linux';
238 } elsif ($spec eq 'gnu/kfreebsd') {
239 return &add_specs ('unix') .
240 ' -D__FreeBSD_kernel__=1';
241 } elsif ($spec eq 'openbsd') {
242 return &add_specs ('unix') .
243 ' -D__OpenBSD__=1';
244 } elsif ($spec eq 'darwin') {
245 return
246 ' -D__APPLE__=1 -D__MACH__=1';
247 } elsif ($spec eq 'unix') {
248 return ' -Dunix=1 -D__unix=1 -D__unix__=1';
249 } elsif ( $spec =~ /^cygwin/) {
250 return &add_specs ('unix') .
251 ' -D__CYGWIN__=1 -D__CYGWIN32__=1' .
252 " -D'_cdecl=__attribute__((__cdecl__))'" .
253 " -D'__cdecl=__attribute__((__cdecl__))'" .
254 " -D'_stdcall=__attribute__((__stdcall__))'" .
255 " -D'__stdcall=__attribute__((__stdcall__))'" .
256 " -D'_fastcall=__attribute__((__fastcall__))'" .
257 " -D'__fastcall=__attribute__((__fastcall__))'" .
258 " -D'__declspec(x)=__attribute__((x))'";
259 } elsif ($spec eq 'i86') {
260 return (' -D__i386=1 -D__i386__=1' .
261 &integer_types (8, 16, 32, $m64 ? 64 : 32, 64) .
262 &float_types (1, 1, 21, [24,8], [53,11], [64,15]) .
263 &define_size_t ($m64 ? "long unsigned int" : "unsigned int") .
264 ' -D__SIZEOF_POINTER__=' . ($m64 ? '8' : '4'));
265 } elsif ($spec eq 'sparc') {
266 return (' -D__sparc=1 -D__sparc__=1' .
267 &integer_types (8, 16, 32, $m64 ? 64 : 32, 64) .
268 &float_types (1, 1, 33, [24,8], [53,11], [113,15]) .
269 &define_size_t ($m64 ? "long unsigned int" : "unsigned int") .
270 ' -D__SIZEOF_POINTER__=' . ($m64 ? '8' : '4'));
271 } elsif ($spec eq 'sparc64') {
272 return (' -D__sparc=1 -D__sparc__=1 -D__sparcv9__=1 -D__sparc64__=1 -D__arch64__=1 -D__LP64__=1' .
273 &integer_types (8, 16, 32, 64, 64, 128) .
274 &float_types (1, 1, 33, [24,8], [53,11], [113,15]) .
275 &define_size_t ("long unsigned int") .
276 ' -D__SIZEOF_POINTER__=8');
277 } elsif ($spec eq 'x86_64') {
278 return (' -D__x86_64=1 -D__x86_64__=1' . ($m32 ? '' : ' -D__LP64__=1') .
279 &integer_types (8, 16, 32, $m32 ? 32 : 64, 64, 128) .
280 &float_types (1, 1, 33, [24,8], [53,11], [113,15]) .
281 &define_size_t ($m32 ? "unsigned int" : "long unsigned int") .
282 ' -D__SIZEOF_POINTER__=' . ($m32 ? '4' : '8'));
283 } elsif ($spec eq 'ppc') {
284 return (' -D__powerpc__=1 -D_BIG_ENDIAN -D_STRING_ARCH_unaligned=1' .
285 &integer_types (8, 16, 32, $m64 ? 64 : 32, 64) .
286 &float_types (1, 1, 21, [24,8], [53,11], [113,15]) .
287 &define_size_t ($m64 ? "long unsigned int" : "unsigned int") .
288 ' -D__SIZEOF_POINTER__=' . ($m64 ? '8' : '4'));
289 } elsif ($spec eq 'ppc64') {
290 return (' -D__powerpc__=1 -D__PPC__=1 -D_STRING_ARCH_unaligned=1' .
291 ' -D__powerpc64__=1 -D__PPC64__=1' .
292 ' -m64' .
293 &float_types (1, 1, 21, [24,8], [53,11], [113,15]));
294 } elsif ($spec eq 's390x') {
295 return (' -D__s390x__ -D__s390__ -D_BIG_ENDIAN' .
296 &integer_types (8, 16, 32, $m64 ? 64 : 32, 64) .
297 &float_types (1, 1, 36, [24,8], [53,11], [113,15]) .
298 &define_size_t ("long unsigned int") .
299 ' -D__SIZEOF_POINTER__=' . ($m64 ? '8' : '4'));
300 } elsif ($spec eq 'arm') {
301 chomp (my $gccmachine = `$cc -dumpmachine`);
302 my $cppsymbols = ' -D__arm__=1 -m32';
303
304 if ($gccmachine eq 'arm-linux-gnueabihf') {
305 $cppsymbols .= ' -D__ARM_PCS_VFP=1';
306 }
307
308 return ($cppsymbols .
309 &float_types (1, 1, 36, [24,8], [53,11], [53, 11]));
310 } elsif ($spec eq 'aarch64') {
311 return (' -D__aarch64__=1 -m64' .
312 &float_types (1, 1, 36, [24,8], [53,11], [113,15]));
313 } elsif ($spec eq 'host_os_specs') {
314 my $os = `uname -s`;
315 chomp $os;
316 return &add_specs (lc $os);
317 } elsif ($spec eq 'host_arch_specs') {
318 my $arch = `uname -m`;
319 chomp $arch;
320 if ($arch =~ /^(i.?86|athlon)$/i) {
321 return &add_specs ('i86');
322 } elsif ($arch =~ /^(sun4u)$/i) {
323 return &add_specs ('sparc');
324 } elsif ($arch =~ /^(x86_64)$/i) {
325 return &add_specs ('x86_64');
326 } elsif ($arch =~ /^(ppc)$/i) {
327 return &add_specs ('ppc');
328 } elsif ($arch =~ /^(ppc64)$/i) {
329 return &add_specs ('ppc64') . ' -mbig-endian -D_CALL_ELF=1';
330 } elsif ($arch =~ /^(ppc64le)$/i) {
331 return &add_specs ('ppc64') . ' -mlittle-endian -D_CALL_ELF=2';
332 } elsif ($arch =~ /^(s390x)$/i) {
333 return &add_specs ('s390x');
334 } elsif ($arch =~ /^(sparc64)$/i) {
335 return &add_specs ('sparc64');
336 } elsif ($arch =~ /^arm(?:v[78]l)?$/i) {
337 return &add_specs ('arm');
338 } elsif ($arch =~ /^(aarch64)$/i) {
339 return &add_specs ('aarch64');
340 }
341 } else {
342 die "$0: invalid specs: $spec\n";
343 }
344 }
345
346 # -----------------------------------------------------------------------------