1
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright 2018, Richard Lowe.
25 */
26 /*
27 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright 2019 Joyent, Inc.
31 */
32
33 /*
34 * Wrapper for the GNU C compiler to make it accept the Sun C compiler
35 * arguments where possible.
36 *
37 * Since the translation is inexact, this is something of a work-in-progress.
38 *
39 */
40
41 /* If you modify this file, you must increment CW_VERSION */
42 #define CW_VERSION "4.0"
43
44 /*
45 * -# Verbose mode
46 * -### Show compiler commands built by driver, no compilation
47 * -A<name[(tokens)]> Preprocessor predicate assertion
48 * -B<[static|dynamic]> Specify dynamic or static binding
49 * -C Prevent preprocessor from removing comments
50 * -c Compile only - produce .o files, suppress linking
51 * -cg92 Alias for -xtarget=ss1000
52 * -D<name[=token]> Associate name with token as if by #define
53 * -d[y|n] dynamic [-dy] or static [-dn] option to linker
54 * -E Compile source through preprocessor only, output to stdout
55 * -erroff=<t> Suppress warnings specified by tags t(%none, %all, <tag list>)
56 * -errtags=<a> Display messages with tags a(no, yes)
57 * -errwarn=<t> Treats warnings specified by tags t(%none, %all, <tag list>)
58 * as errors
59 * -fast Optimize using a selection of options
60 * -fd Report old-style function definitions and declarations
61 * -fnonstd Initialize floating-point hardware to non-standard preferences
62 * -fns[=<yes|no>] Select non-standard floating point mode
63 * -fprecision=<p> Set FP rounding precision mode p(single, double, extended)
64 * -fround=<r> Select the IEEE rounding mode in effect at startup
65 * -fsimple[=<n>] Select floating-point optimization preferences <n>
66 * -fsingle Use single-precision arithmetic (-Xt and -Xs modes only)
67 * -ftrap=<t> Select floating-point trapping mode in effect at startup
68 * -fstore force floating pt. values to target precision on assignment
69 * -G Build a dynamic shared library
70 * -g Compile for debugging
71 * -H Print path name of each file included during compilation
72 * -h <name> Assign <name> to generated dynamic shared library
73 * -I<dir> Add <dir> to preprocessor #include file search path
74 * -i Passed to linker to ignore any LD_LIBRARY_PATH setting
75 * -keeptmp Keep temporary files created during compilation
76 * -L<dir> Pass to linker to add <dir> to the library search path
77 * -l<name> Link with library lib<name>.a or lib<name>.so
78 * -mc Remove duplicate strings from .comment section of output files
79 * -mr Remove all strings from .comment section of output files
80 * -mr,"string" Remove all strings and append "string" to .comment section
81 * -mt Specify options needed when compiling multi-threaded code
82 * -native Find available processor, generate code accordingly
83 * -nofstore Do not force floating pt. values to target precision
84 * on assignment
85 * -norunpath Do not build in a runtime path for shared libraries
86 * -O Use default optimization level (-xO2 or -xO3. Check man page.)
87 * -o <outputfile> Set name of output file to <outputfile>
88 * -P Compile source through preprocessor only, output to .i file
89 * -p Compile for profiling with prof
90 * -Q[y|n] Emit/don't emit identification info to output file
91 * -R<dir[:dir]> Build runtime search path list into executable
92 * -S Compile and only generate assembly code (.s)
93 * -s Strip symbol table from the executable file
94 * -t Turn off duplicate symbol warnings when linking
95 * -U<name> Delete initial definition of preprocessor symbol <name>
96 * -V Report version number of each compilation phase
97 * -v Do stricter semantic checking
98 * -W<c>,<arg> Pass <arg> to specified component <c> (a,l,m,p,0,2,h,i,u)
99 * -w Suppress compiler warning messages
100 * -Xa Compile assuming ANSI C conformance, allow K & R extensions
101 * (default mode)
102 * -Xs Compile assuming (pre-ANSI) K & R C style code
103 * -Xt Compile assuming K & R conformance, allow ANSI C
104 * -xarch=<a> Specify target architecture instruction set
105 * -xbuiltin[=<b>] When profitable inline, or substitute intrinisic functions
106 * for system functions, b={%all,%none}
107 * -xCC Accept C++ style comments
108 * -xchip=<c> Specify the target processor for use by the optimizer
109 * -xcode=<c> Generate different code for forming addresses
110 * -xcrossfile[=<n>] Enable optimization and inlining across source files,
111 * n={0|1}
112 * -xe Perform only syntax/semantic checking, no code generation
113 * -xF Compile for later mapfile reordering or unused section
114 * elimination
115 * -xhelp=<f> Display on-line help information f(flags, readme, errors)
116 * -xildoff Cancel -xildon
117 * -xildon Enable use of the incremental linker, ild
118 * -xinline=[<a>,...,<a>] Attempt inlining of specified user routines,
119 * <a>={%auto,func,no%func}
120 * -xlibmieee Force IEEE 754 return values for math routines in
121 * exceptional cases
122 * -xlibmil Inline selected libm math routines for optimization
123 * -xlic_lib=sunperf Link in the Sun supplied performance libraries
124 * -xlicinfo Show license server information
125 * -xmaxopt=[off,1,2,3,4,5] maximum optimization level allowed on #pragma opt
126 * -xO<n> Generate optimized code (n={1|2|3|4|5})
127 * -xP Print prototypes for function definitions
128 * -xprofile=<p> Collect data for a profile or use a profile to optimize
129 * <p>={{collect,use}[:<path>],tcov}
130 * -xregs=<r> Control register allocation
131 * -xs Allow debugging without object (.o) files
132 * -xsb Compile for use with the WorkShop source browser
133 * -xsbfast Generate only WorkShop source browser info, no compilation
134 * -xsfpconst Represent unsuffixed floating point constants as single
135 * precision
136 * -xspace Do not do optimizations that increase code size
137 * -xstrconst Place string literals into read-only data segment
138 * -xtarget=<t> Specify target system for optimization
139 * -xtemp=<dir> Set directory for temporary files to <dir>
140 * -xtime Report the execution time for each compilation phase
141 * -xunroll=n Enable unrolling loops n times where possible
142 * -Y<c>,<dir> Specify <dir> for location of component <c> (a,l,m,p,0,h,i,u)
143 * -YA,<dir> Change default directory searched for components
144 * -YI,<dir> Change default directory searched for include files
145 * -YP,<dir> Change default directory for finding libraries files
146 * -YS,<dir> Change default directory for startup object files
147 */
148
149 /*
150 * Translation table:
151 */
152 /*
153 * -# -v
154 * -### error
155 * -A<name[(tokens)]> pass-thru
156 * -B<[static|dynamic]> pass-thru (syntax error for anything else)
157 * -C pass-thru
158 * -c pass-thru
159 * -cg92 -m32 -mcpu=v8 -mtune=supersparc (SPARC only)
160 * -D<name[=token]> pass-thru
161 * -dy or -dn -Wl,-dy or -Wl,-dn
162 * -E pass-thru
163 * -erroff=E_EMPTY_TRANSLATION_UNIT ignore
164 * -errtags=%all -Wall
165 * -errwarn=%all -Werror else -Wno-error
166 * -fast error
167 * -fd error
168 * -fnonstd error
169 * -fns[=<yes|no>] error
170 * -fprecision=<p> error
171 * -fround=<r> error
172 * -fsimple[=<n>] error
173 * -fsingle[=<n>] error
174 * -ftrap=<t> error
175 * -fstore error
176 * -G pass-thru
177 * -g pass-thru
178 * -H pass-thru
179 * -h <name> pass-thru
180 * -I<dir> pass-thru
181 * -i pass-thru
182 * -keeptmp -save-temps
183 * -L<dir> pass-thru
184 * -l<name> pass-thru
185 * -mc error
186 * -mr error
187 * -mr,"string" error
188 * -mt -D_REENTRANT
189 * -native error
190 * -nofstore error
191 * -nolib -nodefaultlibs
192 * -norunpath ignore
193 * -O -O1 (Check the man page to be certain)
194 * -o <outputfile> pass-thru
195 * -P -E -o filename.i (or error)
196 * -p pass-thru
197 * -Q[y|n] error
198 * -R<dir[:dir]> pass-thru
199 * -S pass-thru
200 * -s -Wl,-s
201 * -t -Wl,-t
202 * -U<name> pass-thru
203 * -V --version
204 * -v -Wall
205 * -Wa,<arg> pass-thru
206 * -Wp,<arg> pass-thru except -xc99=<a>
207 * -Wl,<arg> pass-thru
208 * -W{m,0,2,h,i,u> error/ignore
209 * -xmodel=kernel -ffreestanding -mcmodel=kernel -mno-red-zone
210 * -Wu,-save_args -msave-args
211 * -w pass-thru
212 * -Xa -std=iso9899:199409 or -ansi
213 * -Xt error
214 * -Xs -traditional -std=c89
215 * -xarch=<a> table
216 * -xbuiltin[=<b>] -fbuiltin (-fno-builtin otherwise)
217 * -xCC ignore
218 * -xchip=<c> table
219 * -xcode=<c> table
220 * -xcrossfile[=<n>] ignore
221 * -xe error
222 * -xF error
223 * -xhelp=<f> error
224 * -xildoff ignore
225 * -xildon ignore
226 * -xinline ignore
227 * -xlibmieee error
228 * -xlibmil error
229 * -xlic_lib=sunperf error
230 * -xmaxopt=[...] error
231 * -xO<n> -O<n>
232 * -xP error
233 * -xprofile=<p> error
234 * -xregs=<r> table
235 * -xs error
236 * -xsb error
237 * -xsbfast error
238 * -xsfpconst error
239 * -xspace ignore (-not -Os)
240 * -xstrconst ignore
241 * -xtarget=<t> table
242 * -xtemp=<dir> error
243 * -xtime error
244 * -xtransition -Wtransition
245 * -xunroll=n error
246 * -W0,-xdbggen=no%usedonly -fno-eliminate-unused-debug-symbols
247 * -fno-eliminate-unused-debug-types
248 * -Y<c>,<dir> error
249 * -YA,<dir> error
250 * -YI,<dir> -nostdinc -I<dir>
251 * -YP,<dir> error
252 * -YS,<dir> error
253 */
254
255 #include <ctype.h>
256 #include <err.h>
257 #include <errno.h>
258 #include <fcntl.h>
259 #include <getopt.h>
260 #include <stdio.h>
261 #include <stdlib.h>
262 #include <string.h>
263 #include <unistd.h>
264 #include <dirent.h>
265
266 #include <sys/param.h>
267 #include <sys/stat.h>
268 #include <sys/types.h>
269 #include <sys/utsname.h>
270 #include <sys/wait.h>
271
272 #define CW_F_CXX 0x01
273 #define CW_F_SHADOW 0x02
274 #define CW_F_EXEC 0x04
275 #define CW_F_ECHO 0x08
276 #define CW_F_XLATE 0x10
277 #define CW_F_PROG 0x20
278
279 typedef enum cw_op {
280 CW_O_NONE = 0,
281 CW_O_PREPROCESS,
282 CW_O_COMPILE,
283 CW_O_LINK
284 } cw_op_t;
285
286 struct aelist {
287 struct ae {
288 struct ae *ae_next;
289 char *ae_arg;
290 } *ael_head, *ael_tail;
291 int ael_argc;
292 };
293
294 typedef enum {
295 GNU,
296 SUN,
297 SMATCH
298 } compiler_style_t;
299
300 typedef struct {
301 char *c_name;
302 char *c_path;
303 compiler_style_t c_style;
304 } cw_compiler_t;
305
306 typedef struct cw_ictx {
307 struct cw_ictx *i_next;
308 cw_compiler_t *i_compiler;
309 struct aelist *i_ae;
310 uint32_t i_flags;
311 int i_oldargc;
312 char **i_oldargv;
313 pid_t i_pid;
314 char *i_tmpdir;
315 char *i_stderr;
316 } cw_ictx_t;
317
318 /*
319 * Status values to indicate which Studio compiler and associated
320 * flags are being used.
321 */
322 #define M32 0x01 /* -m32 - only on Studio 12 */
323 #define M64 0x02 /* -m64 - only on Studio 12 */
324 #define SS11 0x100 /* Studio 11 */
325 #define SS12 0x200 /* Studio 12 */
326
327 #define TRANS_ENTRY 5
328 /*
329 * Translation table definition for the -xarch= flag. The "x_arg"
330 * value is translated into the appropriate gcc flags according
331 * to the values in x_trans[n]. The x_flags indicates what compiler
332 * is being used and what flags have been set via the use of
333 * "x_arg".
334 */
335 typedef struct xarch_table {
336 char *x_arg;
337 int x_flags;
338 char *x_trans[TRANS_ENTRY];
339 } xarch_table_t;
340
341 /*
342 * The translation table for the -xarch= flag used in the Studio compilers.
343 */
344 static const xarch_table_t xtbl[] = {
345 #if defined(__x86)
346 { "generic", SS11, {NULL} },
347 { "generic64", (SS11|M64), { "-m64", "-mtune=opteron" } },
348 { "amd64", (SS11|M64), { "-m64", "-mtune=opteron" } },
349 { "386", SS11, { "-march=i386" } },
350 { "pentium_pro", SS11, { "-march=pentiumpro" } },
351 { "sse", SS11, { "-msse", "-mfpmath=sse" } },
352 { "sse2", SS11, { "-msse2", "-mfpmath=sse" } },
353 #elif defined(__sparc)
354 { "generic", (SS11|M32), { "-m32", "-mcpu=v8" } },
355 { "generic64", (SS11|M64), { "-m64", "-mcpu=v9" } },
356 { "v8", (SS11|M32), { "-m32", "-mcpu=v8", "-mno-v8plus" } },
357 { "v8plus", (SS11|M32), { "-m32", "-mcpu=v9", "-mv8plus" } },
358 { "v8plusa", (SS11|M32), { "-m32", "-mcpu=ultrasparc", "-mv8plus",
359 "-mvis" } },
360 { "v8plusb", (SS11|M32), { "-m32", "-mcpu=ultrasparc3", "-mv8plus",
361 "-mvis" } },
362 { "v9", (SS11|M64), { "-m64", "-mcpu=v9" } },
363 { "v9a", (SS11|M64), { "-m64", "-mcpu=ultrasparc", "-mvis" } },
364 { "v9b", (SS11|M64), { "-m64", "-mcpu=ultrasparc3", "-mvis" } },
365 { "sparc", SS12, { "-mcpu=v9", "-mv8plus" } },
366 { "sparcvis", SS12, { "-mcpu=ultrasparc", "-mvis" } },
367 { "sparcvis2", SS12, { "-mcpu=ultrasparc3", "-mvis" } }
368 #endif
369 };
370
371 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
372
373 static const char *xchip_tbl[] = {
374 #if defined(__x86)
375 "386", "-mtune=i386", NULL,
376 "486", "-mtune=i486", NULL,
377 "pentium", "-mtune=pentium", NULL,
378 "pentium_pro", "-mtune=pentiumpro", NULL,
379 #elif defined(__sparc)
380 "super", "-mtune=supersparc", NULL,
381 "ultra", "-mtune=ultrasparc", NULL,
382 "ultra3", "-mtune=ultrasparc3", NULL,
383 #endif
384 NULL, NULL
385 };
386
387 static const char *xcode_tbl[] = {
388 #if defined(__sparc)
389 "abs32", "-fno-pic", "-mcmodel=medlow", NULL,
390 "abs44", "-fno-pic", "-mcmodel=medmid", NULL,
391 "abs64", "-fno-pic", "-mcmodel=medany", NULL,
392 "pic13", "-fpic", NULL,
393 "pic32", "-fPIC", NULL,
394 #endif
395 NULL, NULL
396 };
397
398 static const char *xtarget_tbl[] = {
399 #if defined(__x86)
400 "pentium_pro", "-march=pentiumpro", NULL,
401 #endif /* __x86 */
402 NULL, NULL
403 };
404
405 static const char *xregs_tbl[] = {
406 #if defined(__sparc)
407 "appl", "-mapp-regs", NULL,
408 "no%appl", "-mno-app-regs", NULL,
409 "float", "-mfpu", NULL,
410 "no%float", "-mno-fpu", NULL,
411 #endif /* __sparc */
412 NULL, NULL
413 };
414
415 static void
416 nomem(void)
417 {
418 errx(1, "out of memory");
419 }
420
421 static void
422 newae(struct aelist *ael, const char *arg)
423 {
424 struct ae *ae;
425
426 if ((ae = calloc(sizeof (*ae), 1)) == NULL)
427 nomem();
428 ae->ae_arg = strdup(arg);
429 if (ael->ael_tail == NULL)
430 ael->ael_head = ae;
431 else
432 ael->ael_tail->ae_next = ae;
433 ael->ael_tail = ae;
434 ael->ael_argc++;
435 }
436
437 static cw_ictx_t *
438 newictx(void)
439 {
440 cw_ictx_t *ctx = calloc(sizeof (cw_ictx_t), 1);
441 if (ctx)
442 if ((ctx->i_ae = calloc(sizeof (struct aelist), 1)) == NULL) {
443 free(ctx);
444 return (NULL);
445 }
446
447 return (ctx);
448 }
449
450 static void
451 error(const char *arg)
452 {
453 errx(2, "error: mapping failed at or near arg '%s'", arg);
454 }
455
456 /*
457 * Add the current favourite set of warnings to the gcc invocation.
458 */
459 static void
460 warnings(struct aelist *h)
461 {
462 static int warningsonce;
463
464 if (warningsonce++)
465 return;
466
467 /*
468 * Enable as many warnings as exist, then disable those that we never
469 * ever want.
470 */
471 newae(h, "-Wall");
472 newae(h, "-Wextra");
473 }
474
475 static void
476 optim_disable(struct aelist *h, int level)
477 {
478 if (level >= 2) {
479 newae(h, "-fno-strict-aliasing");
480 newae(h, "-fno-unit-at-a-time");
481 newae(h, "-fno-optimize-sibling-calls");
482 }
483 }
484
485 static void
486 Xsmode(struct aelist *h)
487 {
488 static int xsonce;
489
490 if (xsonce++)
491 return;
492
493 newae(h, "-traditional");
494 newae(h, "-traditional-cpp");
495 }
496
497 static void
498 usage()
499 {
500 extern char *__progname;
501 (void) fprintf(stderr,
502 "usage: %s [-C] [--versions] --primary <compiler> "
503 "[--shadow <compiler>]... -- cflags...\n",
504 __progname);
505 (void) fprintf(stderr, "compilers take the form: name,path,style\n"
506 " - name: a unique name usable in flag specifiers\n"
507 " - path: path to the compiler binary\n"
508 " - style: the style of flags expected: either sun or gnu\n");
509 exit(2);
510 }
511
512 static int
513 xlate_xtb(struct aelist *h, const char *xarg)
514 {
515 int i, j;
516
517 for (i = 0; i < xtbl_size; i++) {
518 if (strcmp(xtbl[i].x_arg, xarg) == 0)
519 break;
520 }
521
522 /*
523 * At the end of the table and so no matching "arg" entry
524 * found and so this must be a bad -xarch= flag.
525 */
526 if (i == xtbl_size)
527 error(xarg);
528
529 for (j = 0; j < TRANS_ENTRY; j++) {
530 if (xtbl[i].x_trans[j] != NULL)
531 newae(h, xtbl[i].x_trans[j]);
532 else
533 break;
534 }
535 return (xtbl[i].x_flags);
536
537 }
538
539 static void
540 xlate(struct aelist *h, const char *xarg, const char **table)
541 {
542 while (*table != NULL && strcmp(xarg, *table) != 0) {
543 while (*table != NULL)
544 table++;
545 table++;
546 }
547
548 if (*table == NULL)
549 error(xarg);
550
551 table++;
552
553 while (*table != NULL) {
554 newae(h, *table);
555 table++;
556 }
557 }
558
559 /*
560 * The compiler wants the output file to end in appropriate extension. If
561 * we're generating a name from whole cloth (path == NULL), we assume that
562 * extension to be .o, otherwise we match the extension of the caller.
563 */
564 static char *
565 discard_file_name(cw_ictx_t *ctx, const char *path)
566 {
567 char *ret, *ext;
568 char tmpl[] = "cwXXXXXX";
569
570 if (path == NULL) {
571 ext = ".o";
572 } else {
573 ext = strrchr(path, '.');
574 }
575
576 /*
577 * We need absolute control over where the temporary file goes, since
578 * we rely on it for cleanup so tempnam(3C) and tmpnam(3C) are
579 * inappropriate (they use TMPDIR, preferentially).
580 *
581 * mkstemp(3C) doesn't actually help us, since the temporary file
582 * isn't used by us, only its name.
583 */
584 if (mktemp(tmpl) == NULL)
585 nomem();
586
587 (void) asprintf(&ret, "%s/%s%s", ctx->i_tmpdir, tmpl,
588 (ext != NULL) ? ext : "");
589
590 if (ret == NULL)
591 nomem();
592
593 return (ret);
594 }
595
596 static boolean_t
597 is_source_file(const char *path)
598 {
599 char *ext = strrchr(path, '.');
600
601 if ((ext == NULL) || (*(ext + 1) == '\0'))
602 return (B_FALSE);
603
604 ext += 1;
605
606 if ((strcasecmp(ext, "c") == 0) ||
607 (strcmp(ext, "cc") == 0) ||
608 (strcmp(ext, "i") == 0) ||
609 (strcasecmp(ext, "s") == 0) ||
610 (strcmp(ext, "cpp") == 0)) {
611 return (B_TRUE);
612 }
613
614 return (B_FALSE);
615 }
616
617
618 static void
619 do_gcc(cw_ictx_t *ctx)
620 {
621 int c;
622 int nolibc = 0;
623 int in_output = 0, seen_o = 0, c_files = 0;
624 cw_op_t op = CW_O_LINK;
625 char *model = NULL;
626 char *nameflag;
627 int mflag = 0;
628
629 if (ctx->i_flags & CW_F_PROG) {
630 newae(ctx->i_ae, "--version");
631 return;
632 }
633
634 newae(ctx->i_ae, "-fident");
635 newae(ctx->i_ae, "-finline");
636 newae(ctx->i_ae, "-fno-inline-functions");
637 newae(ctx->i_ae, "-fno-builtin");
638 newae(ctx->i_ae, "-fno-asm");
639 newae(ctx->i_ae, "-fdiagnostics-show-option");
640 newae(ctx->i_ae, "-nodefaultlibs");
641
642 #if defined(__sparc)
643 /*
644 * The SPARC ldd and std instructions require 8-byte alignment of
645 * their address operand. gcc correctly uses them only when the
646 * ABI requires 8-byte alignment; unfortunately we have a number of
647 * pieces of buggy code that doesn't conform to the ABI. This
648 * flag makes gcc work more like Studio with -xmemalign=4.
649 */
650 newae(ctx->i_ae, "-mno-integer-ldd-std");
651 #endif
652
653 /*
654 * This is needed because 'u' is defined
655 * under a conditional on 'sun'. Should
656 * probably just remove the conditional,
657 * or make it be dependent on '__sun'.
658 *
659 * -Dunix is also missing in enhanced ANSI mode
660 */
661 newae(ctx->i_ae, "-D__sun");
662
663 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
664 nomem();
665
666 /*
667 * Walk the argument list, translating as we go ..
668 */
669 while (--ctx->i_oldargc > 0) {
670 char *arg = *++ctx->i_oldargv;
671 size_t arglen = strlen(arg);
672
673 if (*arg == '-') {
674 arglen--;
675 } else {
676 /*
677 * Discard inline files that gcc doesn't grok
678 */
679 if (!in_output && arglen > 3 &&
680 strcmp(arg + arglen - 3, ".il") == 0)
681 continue;
682
683 if (!in_output && is_source_file(arg))
684 c_files++;
685
686 /*
687 * Otherwise, filenames and partial arguments
688 * are passed through for gcc to chew on. However,
689 * output is always discarded for the secondary
690 * compiler.
691 */
692 if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
693 newae(ctx->i_ae, discard_file_name(ctx, arg));
694 } else {
695 newae(ctx->i_ae, arg);
696 }
697 in_output = 0;
698 continue;
699 }
700
701 if (ctx->i_flags & CW_F_CXX) {
702 if (strncmp(arg, "-_g++=", 6) == 0) {
703 newae(ctx->i_ae, strchr(arg, '=') + 1);
704 continue;
705 }
706 if (strncmp(arg, "-compat=", 8) == 0) {
707 /* discard -compat=4 and -compat=5 */
708 continue;
709 }
710 if (strcmp(arg, "-Qoption") == 0) {
711 /* discard -Qoption and its two arguments */
712 if (ctx->i_oldargc < 3)
713 error(arg);
714 ctx->i_oldargc -= 2;
715 ctx->i_oldargv += 2;
716 continue;
717 }
718 if (strcmp(arg, "-xwe") == 0) {
719 /* turn warnings into errors */
720 newae(ctx->i_ae, "-Werror");
721 continue;
722 }
723 if (strcmp(arg, "-norunpath") == 0) {
724 /* gcc has no corresponding option */
725 continue;
726 }
727 if (strcmp(arg, "-nolib") == 0) {
728 /* -nodefaultlibs is on by default */
729 nolibc = 1;
730 continue;
731 }
732 #if defined(__sparc)
733 if (strcmp(arg, "-cg92") == 0) {
734 mflag |= xlate_xtb(ctx->i_ae, "v8");
735 xlate(ctx->i_ae, "super", xchip_tbl);
736 continue;
737 }
738 #endif /* __sparc */
739 }
740
741 switch ((c = arg[1])) {
742 case '_':
743 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
744 (strncmp(arg, "-_gcc=", 6) == 0) ||
745 (strncmp(arg, "-_gnu=", 6) == 0)) {
746 newae(ctx->i_ae, strchr(arg, '=') + 1);
747 }
748 break;
749 case '#':
750 if (arglen == 1) {
751 newae(ctx->i_ae, "-v");
752 break;
753 }
754 error(arg);
755 break;
756 case 'f':
757 if ((strcmp(arg, "-fpic") == 0) ||
758 (strcmp(arg, "-fPIC") == 0)) {
759 newae(ctx->i_ae, arg);
760 break;
761 }
762 error(arg);
763 break;
764 case 'E':
765 if (arglen == 1) {
766 newae(ctx->i_ae, "-xc");
767 newae(ctx->i_ae, arg);
768 op = CW_O_PREPROCESS;
769 nolibc = 1;
770 break;
771 }
772 error(arg);
773 break;
774 case 'c':
775 case 'S':
776 if (arglen == 1) {
777 op = CW_O_COMPILE;
778 nolibc = 1;
779 }
780 /* FALLTHROUGH */
781 case 'C':
782 case 'H':
783 case 'p':
784 if (arglen == 1) {
785 newae(ctx->i_ae, arg);
786 break;
787 }
788 error(arg);
789 break;
790 case 'A':
791 case 'g':
792 case 'h':
793 case 'I':
794 case 'i':
795 case 'L':
796 case 'l':
797 case 'R':
798 case 'U':
799 case 'u':
800 case 'w':
801 newae(ctx->i_ae, arg);
802 break;
803 case 'o':
804 seen_o = 1;
805 if (arglen == 1) {
806 in_output = 1;
807 newae(ctx->i_ae, arg);
808 } else if (ctx->i_flags & CW_F_SHADOW) {
809 newae(ctx->i_ae, "-o");
810 newae(ctx->i_ae, discard_file_name(ctx, arg));
811 } else {
812 newae(ctx->i_ae, arg);
813 }
814 break;
815 case 'D':
816 newae(ctx->i_ae, arg);
817 /*
818 * XXX Clearly a hack ... do we need _KADB too?
819 */
820 if (strcmp(arg, "-D_KERNEL") == 0 ||
821 strcmp(arg, "-D_BOOT") == 0)
822 newae(ctx->i_ae, "-ffreestanding");
823 break;
824 case 'd':
825 if (arglen == 2) {
826 if (strcmp(arg, "-dy") == 0) {
827 newae(ctx->i_ae, "-Wl,-dy");
828 break;
829 }
830 if (strcmp(arg, "-dn") == 0) {
831 newae(ctx->i_ae, "-Wl,-dn");
832 break;
833 }
834 }
835 if (strcmp(arg, "-dalign") == 0) {
836 /*
837 * -dalign forces alignment in some cases;
838 * gcc does not need any flag to do this.
839 */
840 break;
841 }
842 error(arg);
843 break;
844 case 'e':
845 if (strcmp(arg,
846 "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
847 /*
848 * Accept but ignore this -- gcc doesn't
849 * seem to complain about empty translation
850 * units
851 */
852 break;
853 }
854 /* XX64 -- ignore all -erroff= options, for now */
855 if (strncmp(arg, "-erroff=", 8) == 0)
856 break;
857 if (strcmp(arg, "-errtags=yes") == 0) {
858 warnings(ctx->i_ae);
859 break;
860 }
861 if (strcmp(arg, "-errwarn=%all") == 0) {
862 newae(ctx->i_ae, "-Werror");
863 break;
864 }
865 error(arg);
866 break;
867 case 'G':
868 newae(ctx->i_ae, "-shared");
869 nolibc = 1;
870 break;
871 case 'k':
872 if (strcmp(arg, "-keeptmp") == 0) {
873 newae(ctx->i_ae, "-save-temps");
874 break;
875 }
876 error(arg);
877 break;
878 case 'm':
879 if (strcmp(arg, "-mt") == 0) {
880 newae(ctx->i_ae, "-D_REENTRANT");
881 break;
882 }
883 if (strcmp(arg, "-m64") == 0) {
884 newae(ctx->i_ae, "-m64");
885 #if defined(__x86)
886 newae(ctx->i_ae, "-mtune=opteron");
887 #endif
888 mflag |= M64;
889 break;
890 }
891 if (strcmp(arg, "-m32") == 0) {
892 newae(ctx->i_ae, "-m32");
893 mflag |= M32;
894 break;
895 }
896 error(arg);
897 break;
898 case 'B': /* linker options */
899 case 'M':
900 case 'z':
901 {
902 char *opt;
903 size_t len;
904 char *s;
905
906 if (arglen == 1) {
907 opt = *++ctx->i_oldargv;
908 if (opt == NULL || *opt == '\0')
909 error(arg);
910 ctx->i_oldargc--;
911 } else {
912 opt = arg + 2;
913 }
914 len = strlen(opt) + 7;
915 if ((s = malloc(len)) == NULL)
916 nomem();
917 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
918 newae(ctx->i_ae, s);
919 free(s);
920 }
921 break;
922 case 'O':
923 if (arglen == 1) {
924 newae(ctx->i_ae, "-O");
925 break;
926 }
927 error(arg);
928 break;
929 case 'P':
930 /*
931 * We could do '-E -o filename.i', but that's hard,
932 * and we don't need it for the case that's triggering
933 * this addition. We'll require the user to specify
934 * -o in the Makefile. If they don't they'll find out
935 * in a hurry.
936 */
937 newae(ctx->i_ae, "-E");
938 op = CW_O_PREPROCESS;
939 nolibc = 1;
940 break;
941 case 's':
942 if (arglen == 1) {
943 newae(ctx->i_ae, "-Wl,-s");
944 break;
945 }
946 error(arg);
947 break;
948 case 't':
949 if (arglen == 1) {
950 newae(ctx->i_ae, "-Wl,-t");
951 break;
952 }
953 error(arg);
954 break;
955 case 'V':
956 if (arglen == 1) {
957 ctx->i_flags &= ~CW_F_ECHO;
958 newae(ctx->i_ae, "--version");
959 break;
960 }
961 error(arg);
962 break;
963 case 'v':
964 if (arglen == 1) {
965 warnings(ctx->i_ae);
966 break;
967 }
968 error(arg);
969 break;
970 case 'W':
971 if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
972 /*
973 * gcc's preprocessor will accept c99
974 * regardless, so accept and ignore.
975 */
976 break;
977 }
978 if (strncmp(arg, "-Wa,", 4) == 0 ||
979 strncmp(arg, "-Wp,", 4) == 0 ||
980 strncmp(arg, "-Wl,", 4) == 0) {
981 newae(ctx->i_ae, arg);
982 break;
983 }
984 if (strcmp(arg, "-W0,-noglobal") == 0 ||
985 strcmp(arg, "-W0,-xglobalstatic") == 0) {
986 /*
987 * gcc doesn't prefix local symbols
988 * in debug mode, so this is not needed.
989 */
990 break;
991 }
992 if (strcmp(arg, "-W0,-Lt") == 0) {
993 /*
994 * Generate tests at the top of loops.
995 * There is no direct gcc equivalent, ignore.
996 */
997 break;
998 }
999 if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
1000 newae(ctx->i_ae,
1001 "-fno-eliminate-unused-debug-symbols");
1002 newae(ctx->i_ae,
1003 "-fno-eliminate-unused-debug-types");
1004 break;
1005 }
1006 if (strcmp(arg, "-W2,-xwrap_int") == 0) {
1007 /*
1008 * Use the legacy behaviour (pre-SS11)
1009 * for integer wrapping.
1010 * gcc does not need this.
1011 */
1012 break;
1013 }
1014 if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
1015 /*
1016 * Prevents optimizing away checks for
1017 * unbound weak symbol addresses. gcc does
1018 * not do this, so it's not needed.
1019 */
1020 break;
1021 }
1022 if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
1023 xlate(ctx->i_ae, arg + 11, xcode_tbl);
1024 break;
1025 }
1026 if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1027 /*
1028 * Prevents insertion of register symbols.
1029 * gcc doesn't do this, so ignore it.
1030 */
1031 break;
1032 }
1033 if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1034 /*
1035 * Prevents optimizing away of static variables.
1036 * gcc does not do this, so it's not needed.
1037 */
1038 break;
1039 }
1040 #if defined(__x86)
1041 if (strcmp(arg, "-Wu,-save_args") == 0) {
1042 newae(ctx->i_ae, "-msave-args");
1043 break;
1044 }
1045 #endif /* __x86 */
1046 error(arg);
1047 break;
1048 case 'X':
1049 if (strcmp(arg, "-Xa") == 0 ||
1050 strcmp(arg, "-Xt") == 0) {
1051 break;
1052 }
1053 if (strcmp(arg, "-Xs") == 0) {
1054 Xsmode(ctx->i_ae);
1055 break;
1056 }
1057 error(arg);
1058 break;
1059 case 'x':
1060 if (arglen == 1)
1061 error(arg);
1062 switch (arg[2]) {
1063 case 'a':
1064 if (strncmp(arg, "-xarch=", 7) == 0) {
1065 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1066 break;
1067 }
1068 error(arg);
1069 break;
1070 case 'b':
1071 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1072 if (strcmp(arg + 10, "%all"))
1073 newae(ctx->i_ae, "-fbuiltin");
1074 break;
1075 }
1076 error(arg);
1077 break;
1078 case 'C':
1079 /* Accept C++ style comments -- ignore */
1080 if (strcmp(arg, "-xCC") == 0)
1081 break;
1082 error(arg);
1083 break;
1084 case 'c':
1085 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1086 newae(ctx->i_ae, "-std=gnu99");
1087 break;
1088 }
1089 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1090 newae(ctx->i_ae, "-std=gnu89");
1091 break;
1092 }
1093 if (strncmp(arg, "-xchip=", 7) == 0) {
1094 xlate(ctx->i_ae, arg + 7, xchip_tbl);
1095 break;
1096 }
1097 if (strncmp(arg, "-xcode=", 7) == 0) {
1098 xlate(ctx->i_ae, arg + 7, xcode_tbl);
1099 break;
1100 }
1101 if (strncmp(arg, "-xcrossfile", 11) == 0)
1102 break;
1103 error(arg);
1104 break;
1105 case 'F':
1106 /*
1107 * Compile for mapfile reordering, or unused
1108 * section elimination, syntax can be -xF or
1109 * more complex, like -xF=%all -- ignore.
1110 */
1111 if (strncmp(arg, "-xF", 3) == 0)
1112 break;
1113 error(arg);
1114 break;
1115 case 'i':
1116 if (strncmp(arg, "-xinline", 8) == 0)
1117 /* No inlining; ignore */
1118 break;
1119 if (strcmp(arg, "-xildon") == 0 ||
1120 strcmp(arg, "-xildoff") == 0)
1121 /* No incremental linking; ignore */
1122 break;
1123 error(arg);
1124 break;
1125 #if defined(__x86)
1126 case 'm':
1127 if (strcmp(arg, "-xmodel=kernel") == 0) {
1128 newae(ctx->i_ae, "-ffreestanding");
1129 newae(ctx->i_ae, "-mno-red-zone");
1130 model = "-mcmodel=kernel";
1131 nolibc = 1;
1132 break;
1133 }
1134 error(arg);
1135 break;
1136 #endif /* __x86 */
1137 case 'O':
1138 if (strncmp(arg, "-xO", 3) == 0) {
1139 size_t len = strlen(arg);
1140 char *s = NULL;
1141 int c = *(arg + 3);
1142 int level;
1143
1144 if (len != 4 || !isdigit(c))
1145 error(arg);
1146
1147 level = atoi(arg + 3);
1148 if (level > 5)
1149 error(arg);
1150 if (level >= 2) {
1151 /*
1152 * For gcc-3.4.x at -O2 we
1153 * need to disable optimizations
1154 * that break ON.
1155 */
1156 optim_disable(ctx->i_ae, level);
1157 /*
1158 * limit -xO3 to -O2 as well.
1159 */
1160 level = 2;
1161 }
1162 if (asprintf(&s, "-O%d", level) == -1)
1163 nomem();
1164 newae(ctx->i_ae, s);
1165 free(s);
1166 break;
1167 }
1168 error(arg);
1169 break;
1170 case 'r':
1171 if (strncmp(arg, "-xregs=", 7) == 0) {
1172 xlate(ctx->i_ae, arg + 7, xregs_tbl);
1173 break;
1174 }
1175 error(arg);
1176 break;
1177 case 's':
1178 if (strcmp(arg, "-xs") == 0 ||
1179 strcmp(arg, "-xspace") == 0 ||
1180 strcmp(arg, "-xstrconst") == 0)
1181 break;
1182 error(arg);
1183 break;
1184 case 't':
1185 if (strncmp(arg, "-xtarget=", 9) == 0) {
1186 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1187 break;
1188 }
1189 error(arg);
1190 break;
1191 case 'e':
1192 case 'h':
1193 case 'l':
1194 default:
1195 error(arg);
1196 break;
1197 }
1198 break;
1199 case 'Y':
1200 if (arglen == 1) {
1201 if ((arg = *++ctx->i_oldargv) == NULL ||
1202 *arg == '\0')
1203 error("-Y");
1204 ctx->i_oldargc--;
1205 arglen = strlen(arg + 1);
1206 } else {
1207 arg += 2;
1208 }
1209 /* Just ignore -YS,... for now */
1210 if (strncmp(arg, "S,", 2) == 0)
1211 break;
1212 if (strncmp(arg, "l,", 2) == 0) {
1213 char *s = strdup(arg);
1214 s[0] = '-';
1215 s[1] = 'B';
1216 newae(ctx->i_ae, s);
1217 free(s);
1218 break;
1219 }
1220 if (strncmp(arg, "I,", 2) == 0) {
1221 char *s = strdup(arg);
1222 s[0] = '-';
1223 s[1] = 'I';
1224 newae(ctx->i_ae, "-nostdinc");
1225 newae(ctx->i_ae, s);
1226 free(s);
1227 break;
1228 }
1229 error(arg);
1230 break;
1231 case 'Q':
1232 /*
1233 * We could map -Qy into -Wl,-Qy etc.
1234 */
1235 default:
1236 error(arg);
1237 break;
1238 }
1239 }
1240
1241 free(nameflag);
1242
1243 /*
1244 * When compiling multiple source files in a single invocation some
1245 * compilers output objects into the current directory with
1246 * predictable and conventional names.
1247 *
1248 * We prevent any attempt to compile multiple files at once so that
1249 * any such objects created by a shadow can't escape into a later
1250 * link-edit.
1251 */
1252 if (c_files > 1 && op != CW_O_PREPROCESS) {
1253 errx(2, "multiple source files are "
1254 "allowed only with -E or -P");
1255 }
1256
1257 /*
1258 * Make sure that we do not have any unintended interactions between
1259 * the xarch options passed in and the version of the Studio compiler
1260 * used.
1261 */
1262 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1263 errx(2,
1264 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1265 }
1266
1267 switch (mflag) {
1268 case 0:
1269 /* FALLTHROUGH */
1270 case M32:
1271 #if defined(__sparc)
1272 /*
1273 * Only -m32 is defined and so put in the missing xarch
1274 * translation.
1275 */
1276 newae(ctx->i_ae, "-mcpu=v8");
1277 newae(ctx->i_ae, "-mno-v8plus");
1278 #endif
1279 break;
1280 case M64:
1281 #if defined(__sparc)
1282 /*
1283 * Only -m64 is defined and so put in the missing xarch
1284 * translation.
1285 */
1286 newae(ctx->i_ae, "-mcpu=v9");
1287 #endif
1288 break;
1289 case SS12:
1290 #if defined(__sparc)
1291 /* no -m32/-m64 flag used - this is an error for sparc builds */
1292 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1293 exit(2);
1294 #endif
1295 break;
1296 case SS11:
1297 /* FALLTHROUGH */
1298 case (SS11|M32):
1299 case (SS11|M64):
1300 break;
1301 case (SS12|M32):
1302 #if defined(__sparc)
1303 /*
1304 * Need to add in further 32 bit options because with SS12
1305 * the xarch=sparcvis option can be applied to 32 or 64
1306 * bit, and so the translatation table (xtbl) cannot handle
1307 * that.
1308 */
1309 newae(ctx->i_ae, "-mv8plus");
1310 #endif
1311 break;
1312 case (SS12|M64):
1313 break;
1314 default:
1315 (void) fprintf(stderr,
1316 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1317 exit(2);
1318 }
1319
1320 if (ctx->i_flags & CW_F_SHADOW) {
1321 if (op == CW_O_PREPROCESS)
1322 exit(0);
1323 else if (op == CW_O_LINK && c_files == 0)
1324 exit(0);
1325 }
1326
1327 if (model != NULL)
1328 newae(ctx->i_ae, model);
1329 if (!nolibc)
1330 newae(ctx->i_ae, "-lc");
1331 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1332 newae(ctx->i_ae, "-o");
1333 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1334 }
1335 }
1336
1337 static void
1338 do_smatch(cw_ictx_t *ctx)
1339 {
1340 if (ctx->i_flags & CW_F_PROG) {
1341 newae(ctx->i_ae, "--version");
1342 return;
1343 }
1344
1345 /*
1346 * Some sources shouldn't run smatch at all.
1347 */
1348 for (int i = 0; i < ctx->i_oldargc; i++) {
1349 char *arg = ctx->i_oldargv[i];
1350
1351 if (strcmp(arg, "-_smatch=off") == 0) {
1352 ctx->i_flags &= ~ (CW_F_EXEC | CW_F_ECHO);
1353 return;
1354 }
1355 }
1356
1357 /*
1358 * smatch can handle gcc's options.
1359 */
1360 do_gcc(ctx);
1361 }
1362
1363 static void
1364 do_cc(cw_ictx_t *ctx)
1365 {
1366 int in_output = 0, seen_o = 0, c_files = 0;
1367 cw_op_t op = CW_O_LINK;
1368 char *nameflag;
1369
1370 if (ctx->i_flags & CW_F_PROG) {
1371 newae(ctx->i_ae, "-V");
1372 return;
1373 }
1374
1375 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1376 nomem();
1377
1378 while (--ctx->i_oldargc > 0) {
1379 char *arg = *++ctx->i_oldargv;
1380
1381 if (strncmp(arg, "-_CC=", 5) == 0) {
1382 newae(ctx->i_ae, strchr(arg, '=') + 1);
1383 continue;
1384 }
1385
1386 if (*arg != '-') {
1387 if (!in_output && is_source_file(arg))
1388 c_files++;
1389
1390 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1391 newae(ctx->i_ae, arg);
1392 } else {
1393 in_output = 0;
1394 newae(ctx->i_ae, discard_file_name(ctx, arg));
1395 }
1396 continue;
1397 }
1398 switch (*(arg + 1)) {
1399 case '_':
1400 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1401 (strncmp(arg, "-_cc=", 5) == 0) ||
1402 (strncmp(arg, "-_sun=", 6) == 0)) {
1403 newae(ctx->i_ae, strchr(arg, '=') + 1);
1404 }
1405 break;
1406
1407 case 'V':
1408 ctx->i_flags &= ~CW_F_ECHO;
1409 newae(ctx->i_ae, arg);
1410 break;
1411 case 'o':
1412 seen_o = 1;
1413 if (strlen(arg) == 2) {
1414 in_output = 1;
1415 newae(ctx->i_ae, arg);
1416 } else if (ctx->i_flags & CW_F_SHADOW) {
1417 newae(ctx->i_ae, "-o");
1418 newae(ctx->i_ae, discard_file_name(ctx, arg));
1419 } else {
1420 newae(ctx->i_ae, arg);
1421 }
1422 break;
1423 case 'c':
1424 case 'S':
1425 if (strlen(arg) == 2)
1426 op = CW_O_COMPILE;
1427 newae(ctx->i_ae, arg);
1428 break;
1429 case 'E':
1430 case 'P':
1431 if (strlen(arg) == 2)
1432 op = CW_O_PREPROCESS;
1433 /*FALLTHROUGH*/
1434 default:
1435 newae(ctx->i_ae, arg);
1436 }
1437 }
1438
1439 free(nameflag);
1440
1441 /* See the comment on this same code in do_gcc() */
1442 if (c_files > 1 && op != CW_O_PREPROCESS) {
1443 errx(2, "multiple source files are "
1444 "allowed only with -E or -P");
1445 }
1446
1447 if (ctx->i_flags & CW_F_SHADOW) {
1448 if (op == CW_O_PREPROCESS)
1449 exit(0);
1450 else if (op == CW_O_LINK && c_files == 0)
1451 exit(0);
1452 }
1453
1454 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1455 newae(ctx->i_ae, "-o");
1456 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1457 }
1458 }
1459
1460 static void
1461 prepctx(cw_ictx_t *ctx)
1462 {
1463 newae(ctx->i_ae, ctx->i_compiler->c_path);
1464
1465 if (ctx->i_flags & CW_F_PROG) {
1466 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1467 "shadow" : "primary", ctx->i_compiler->c_path);
1468 (void) fflush(stdout);
1469 }
1470
1471 if (!(ctx->i_flags & CW_F_XLATE))
1472 return;
1473
1474 switch (ctx->i_compiler->c_style) {
1475 case SUN:
1476 do_cc(ctx);
1477 break;
1478 case GNU:
1479 do_gcc(ctx);
1480 break;
1481 case SMATCH:
1482 do_smatch(ctx);
1483 break;
1484 }
1485 }
1486
1487 static int
1488 invoke(cw_ictx_t *ctx)
1489 {
1490 char **newargv;
1491 int ac;
1492 struct ae *a;
1493
1494 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1495 NULL)
1496 nomem();
1497
1498 if (ctx->i_flags & CW_F_ECHO)
1499 (void) fprintf(stderr, "+ ");
1500
1501 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1502 newargv[ac] = a->ae_arg;
1503 if (ctx->i_flags & CW_F_ECHO)
1504 (void) fprintf(stderr, "%s ", a->ae_arg);
1505 if (a == ctx->i_ae->ael_tail)
1506 break;
1507 }
1508
1509 if (ctx->i_flags & CW_F_ECHO) {
1510 (void) fprintf(stderr, "\n");
1511 (void) fflush(stderr);
1512 }
1513
1514 if (!(ctx->i_flags & CW_F_EXEC))
1515 return (0);
1516
1517 /*
1518 * We must fix up the environment here so that the dependency files are
1519 * not trampled by the shadow compiler. Also take care of GCC
1520 * environment variables that will throw off gcc. This assumes a primary
1521 * gcc.
1522 */
1523 if ((ctx->i_flags & CW_F_SHADOW) &&
1524 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1525 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1526 unsetenv("GCC_ROOT") != 0)) {
1527 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1528 strerror(errno));
1529 return (-1);
1530 }
1531
1532 (void) execv(newargv[0], newargv);
1533 warn("couldn't run %s", newargv[0]);
1534
1535 return (-1);
1536 }
1537
1538 static int
1539 reap(cw_ictx_t *ctx)
1540 {
1541 int status, ret = 0;
1542 char buf[1024];
1543 struct stat s;
1544
1545 /*
1546 * Only wait for one specific child.
1547 */
1548 if (ctx->i_pid <= 0)
1549 return (-1);
1550
1551 do {
1552 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1553 warn("cannot reap child");
1554 return (-1);
1555 }
1556 if (status != 0) {
1557 if (WIFSIGNALED(status)) {
1558 ret = -WTERMSIG(status);
1559 break;
1560 } else if (WIFEXITED(status)) {
1561 ret = WEXITSTATUS(status);
1562 break;
1563 }
1564 }
1565 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1566
1567 if (stat(ctx->i_stderr, &s) < 0) {
1568 warn("stat failed on child cleanup");
1569 return (-1);
1570 }
1571 if (s.st_size != 0) {
1572 FILE *f;
1573
1574 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1575 while (fgets(buf, sizeof (buf), f))
1576 (void) fprintf(stderr, "%s", buf);
1577 (void) fflush(stderr);
1578 (void) fclose(f);
1579 }
1580 }
1581 (void) unlink(ctx->i_stderr);
1582 free(ctx->i_stderr);
1583
1584 /*
1585 * cc returns an error code when given -V; we want that to succeed.
1586 */
1587 if (ctx->i_flags & CW_F_PROG)
1588 return (0);
1589
1590 return (ret);
1591 }
1592
1593 static int
1594 exec_ctx(cw_ictx_t *ctx, int block)
1595 {
1596 if ((ctx->i_stderr = tempnam(ctx->i_tmpdir, "cw")) == NULL) {
1597 nomem();
1598 return (-1);
1599 }
1600
1601 if ((ctx->i_pid = fork()) == 0) {
1602 int fd;
1603
1604 (void) fclose(stderr);
1605 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1606 0666)) < 0) {
1607 err(1, "open failed for standard error");
1608 }
1609 if (dup2(fd, 2) < 0) {
1610 err(1, "dup2 failed for standard error");
1611 }
1612 if (fd != 2)
1613 (void) close(fd);
1614 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1615 err(1, "freopen failed for /dev/fd/2");
1616 }
1617
1618 prepctx(ctx);
1619 exit(invoke(ctx));
1620 }
1621
1622 if (ctx->i_pid < 0) {
1623 err(1, "fork failed");
1624 }
1625
1626 if (block)
1627 return (reap(ctx));
1628
1629 return (0);
1630 }
1631
1632 static void
1633 parse_compiler(const char *spec, cw_compiler_t *compiler)
1634 {
1635 char *tspec, *token;
1636
1637 if ((tspec = strdup(spec)) == NULL)
1638 nomem();
1639
1640 if ((token = strsep(&tspec, ",")) == NULL)
1641 errx(1, "Compiler is missing a name: %s", spec);
1642 compiler->c_name = token;
1643
1644 if ((token = strsep(&tspec, ",")) == NULL)
1645 errx(1, "Compiler is missing a path: %s", spec);
1646 compiler->c_path = token;
1647
1648 if ((token = strsep(&tspec, ",")) == NULL)
1649 errx(1, "Compiler is missing a style: %s", spec);
1650
1651 if ((strcasecmp(token, "gnu") == 0) ||
1652 (strcasecmp(token, "gcc") == 0)) {
1653 compiler->c_style = GNU;
1654 } else if ((strcasecmp(token, "sun") == 0) ||
1655 (strcasecmp(token, "cc") == 0)) {
1656 compiler->c_style = SUN;
1657 } else if ((strcasecmp(token, "smatch") == 0)) {
1658 compiler->c_style = SMATCH;
1659 } else {
1660 errx(1, "unknown compiler style: %s", token);
1661 }
1662
1663 if (tspec != NULL)
1664 errx(1, "Excess tokens in compiler: %s", spec);
1665 }
1666
1667 static void
1668 cleanup(cw_ictx_t *ctx)
1669 {
1670 DIR *dirp;
1671 struct dirent *dp;
1672 char buf[MAXPATHLEN];
1673
1674 if ((dirp = opendir(ctx->i_tmpdir)) == NULL) {
1675 if (errno != ENOENT) {
1676 err(1, "couldn't open temp directory: %s",
1677 ctx->i_tmpdir);
1678 } else {
1679 return;
1680 }
1681 }
1682
1683 errno = 0;
1684 while ((dp = readdir(dirp)) != NULL) {
1685 (void) snprintf(buf, MAXPATHLEN, "%s/%s", ctx->i_tmpdir,
1686 dp->d_name);
1687
1688 if (strcmp(dp->d_name, ".") == 0 ||
1689 strcmp(dp->d_name, "..") == 0) {
1690 continue;
1691 }
1692
1693 if (unlink(buf) == -1)
1694 err(1, "failed to unlink temp file: %s", dp->d_name);
1695 errno = 0;
1696 }
1697
1698 if (errno != 0) {
1699 err(1, "failed to read temporary directory: %s",
1700 ctx->i_tmpdir);
1701 }
1702
1703 (void) closedir(dirp);
1704 if (rmdir(ctx->i_tmpdir) != 0) {
1705 err(1, "failed to unlink temporary directory: %s",
1706 ctx->i_tmpdir);
1707 }
1708 }
1709
1710 int
1711 main(int argc, char **argv)
1712 {
1713 int ch;
1714 cw_compiler_t primary = { NULL, NULL, 0 };
1715 cw_compiler_t shadows[10];
1716 int nshadows = 0;
1717 int ret = 0;
1718 boolean_t do_serial = B_FALSE;
1719 boolean_t do_exec = B_FALSE;
1720 boolean_t vflg = B_FALSE;
1721 boolean_t Cflg = B_FALSE;
1722 boolean_t cflg = B_FALSE;
1723 boolean_t nflg = B_FALSE;
1724 char *tmpdir;
1725
1726 cw_ictx_t *main_ctx;
1727
1728 static struct option longopts[] = {
1729 { "compiler", no_argument, NULL, 'c' },
1730 { "noecho", no_argument, NULL, 'n' },
1731 { "primary", required_argument, NULL, 'p' },
1732 { "shadow", required_argument, NULL, 's' },
1733 { "versions", no_argument, NULL, 'v' },
1734 { NULL, 0, NULL, 0 },
1735 };
1736
1737
1738 if ((main_ctx = newictx()) == NULL)
1739 nomem();
1740
1741 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1742 switch (ch) {
1743 case 'c':
1744 cflg = B_TRUE;
1745 break;
1746 case 'C':
1747 Cflg = B_TRUE;
1748 break;
1749 case 'n':
1750 nflg = B_TRUE;
1751 break;
1752 case 'p':
1753 if (primary.c_path != NULL) {
1754 warnx("Only one primary compiler may "
1755 "be specified");
1756 usage();
1757 }
1758
1759 parse_compiler(optarg, &primary);
1760 break;
1761 case 's':
1762 if (nshadows >= 10)
1763 errx(1, "May only use 10 shadows at "
1764 "the moment");
1765 parse_compiler(optarg, &shadows[nshadows]);
1766 nshadows++;
1767 break;
1768 case 'v':
1769 vflg = B_TRUE;
1770 break;
1771 default:
1772 (void) fprintf(stderr, "Did you forget '--'?\n");
1773 usage();
1774 }
1775 }
1776
1777 if (primary.c_path == NULL) {
1778 warnx("A primary compiler must be specified");
1779 usage();
1780 }
1781
1782 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1783 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1784
1785 /* Leave room for argv[0] */
1786 argc -= (optind - 1);
1787 argv += (optind - 1);
1788
1789 main_ctx->i_oldargc = argc;
1790 main_ctx->i_oldargv = argv;
1791 main_ctx->i_flags = CW_F_XLATE;
1792 if (nflg == 0)
1793 main_ctx->i_flags |= CW_F_ECHO;
1794 if (do_exec)
1795 main_ctx->i_flags |= CW_F_EXEC;
1796 if (Cflg)
1797 main_ctx->i_flags |= CW_F_CXX;
1798 main_ctx->i_compiler = &primary;
1799
1800 if (cflg) {
1801 (void) fputs(primary.c_path, stdout);
1802 }
1803
1804 if (vflg) {
1805 (void) printf("cw version %s\n", CW_VERSION);
1806 (void) fflush(stdout);
1807 main_ctx->i_flags &= ~CW_F_ECHO;
1808 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1809 do_serial = 1;
1810 }
1811
1812 tmpdir = getenv("TMPDIR");
1813 if (tmpdir == NULL)
1814 tmpdir = "/tmp";
1815
1816 if (asprintf(&main_ctx->i_tmpdir, "%s/cw.XXXXXX", tmpdir) == -1)
1817 nomem();
1818
1819 if ((main_ctx->i_tmpdir = mkdtemp(main_ctx->i_tmpdir)) == NULL)
1820 errx(1, "failed to create temporary directory");
1821
1822 ret |= exec_ctx(main_ctx, do_serial);
1823
1824 for (int i = 0; i < nshadows; i++) {
1825 int r;
1826 cw_ictx_t *shadow_ctx;
1827
1828 if ((shadow_ctx = newictx()) == NULL)
1829 nomem();
1830
1831 (void) memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1832
1833 shadow_ctx->i_flags |= CW_F_SHADOW;
1834 shadow_ctx->i_compiler = &shadows[i];
1835
1836 r = exec_ctx(shadow_ctx, do_serial);
1837 if (r == 0) {
1838 shadow_ctx->i_next = main_ctx->i_next;
1839 main_ctx->i_next = shadow_ctx;
1840 }
1841 ret |= r;
1842 }
1843
1844 if (!do_serial) {
1845 cw_ictx_t *next = main_ctx;
1846 while (next != NULL) {
1847 cw_ictx_t *toreap = next;
1848 next = next->i_next;
1849 ret |= reap(toreap);
1850 }
1851 }
1852
1853 cleanup(main_ctx);
1854 return (ret);
1855 }