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 2010 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 *
27 * Copyright 2018 Richard Lowe.
28 * Copyright 2019 Joyent, Inc.
29 * Copyright 2025 Oxide Computer Company
30 */
31
32 /*
33 * Wrapper for the GNU C compiler to make it accept the Sun C compiler
34 * arguments where possible.
35 *
36 * Since the translation is inexact, this is something of a work-in-progress.
37 *
38 */
39
40 /*
41 * If you modify this file, you must increment CW_VERSION. This is a semver,
42 * incompatible changes should bump the major, anything else the minor.
43 */
44 #define CW_VERSION "10.0"
45
46 /*
47 * -# Verbose mode
48 * -### Show compiler commands built by driver, no compilation
49 * -A<name[(tokens)]> Preprocessor predicate assertion
50 * -C Prevent preprocessor from removing comments
51 * -c Compile only - produce .o files, suppress linking
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 * -g Compile for debugging
60 * -H Print path name of each file included during compilation
61 * -h <name> Assign <name> to generated dynamic shared library
62 * -I<dir> Add <dir> to preprocessor #include file search path
63 * -i Passed to linker to ignore any LD_LIBRARY_PATH setting
64 * -keeptmp Keep temporary files created during compilation
65 * -L<dir> Pass to linker to add <dir> to the library search path
66 * -l<name> Link with library lib<name>.a or lib<name>.so
67 * -mt Specify options needed when compiling multi-threaded code
68 * -O Use default optimization level (-xO2 or -xO3. Check man page.)
69 * -o <outputfile> Set name of output file to <outputfile>
70 * -P Compile source through preprocessor only, output to .i file
71 * -p Compile for profiling with prof
72 * -R<dir[:dir]> Build runtime search path list into executable
73 * -S Compile and only generate assembly code (.s)
74 * -s Strip symbol table from the executable file
75 * -std= Set the C standard (note this is in the GNU syntax)
76 * -t Turn off duplicate symbol warnings when linking
77 * -U<name> Delete initial definition of preprocessor symbol <name>
78 * -V Report version number of each compilation phase
79 * -v Do stricter semantic checking
80 * -W<c>,<arg> Pass <arg> to specified component <c> (a,l,m,p,0,2,h,i,u)
81 * -w Suppress compiler warning messages
82 * -Xa Compile assuming ANSI C conformance, allow K & R extensions
83 * (default mode)
84 * -Xs Compile assuming (pre-ANSI) K & R C style code
85 * -xarch=<a> Specify target architecture instruction set
86 * -xbuiltin[=<b>] When profitable inline, or substitute intrinisic functions
87 * for system functions, b={%all,%none}
88 * -xchip=<c> Specify the target processor for use by the optimizer
89 * -xO<n> Generate optimized code (n={1|2|3|4|5})
90 * -xtarget=<t> Specify target system for optimization
91 * -YI,<dir> Specify <dir> for location of headers
92 */
93
94 /*
95 * Translation table:
96 */
97 /*
98 * -# -v
99 * -### error
100 * -A<name[(tokens)]> pass-thru
101 * -B<[static|dynamic]> pass-thru (syntax error for anything else)
102 * -C pass-thru
103 * -c pass-thru
104 * -D<name[=token]> pass-thru
105 * -E pass-thru
106 * -errtags=%all -Wall
107 * -errwarn=%all -Werror else -Wno-error
108 * -g pass-thru
109 * -H pass-thru
110 * -I<dir> pass-thru
111 * -i pass-thru
112 * -keeptmp -save-temps
113 * -L<dir> pass-thru
114 * -l<name> pass-thru
115 * -mt -D_REENTRANT
116 * -nolib -nodefaultlibs
117 * -O -O1 (Check the man page to be certain)
118 * -o <outputfile> pass-thru
119 * -P -E -o filename.i (or error)
120 * -p pass-thru
121 * -R<dir[:dir]> pass-thru
122 * -S pass-thru
123 * -std= pass-thru
124 * -U<name> pass-thru
125 * -V --version
126 * -v -Wall
127 * -Wa,<arg> pass-thru
128 * -Wp,<arg> pass-thru
129 * -Wl,<arg> pass-thru
130 * -xmodel=kernel -ffreestanding -mcmodel=kernel -mno-red-zone
131 * -Wu,-save_args -msave-args
132 * -w pass-thru
133 * -Xa -std=iso9899:199409 or -ansi
134 * -Xs -traditional -std=c89
135 * -xarch=<a> table
136 * -xbuiltin[=<b>] -fbuiltin (-fno-builtin otherwise)
137 * -xchip=<c> table
138 * -xO<n> -O<n>
139 * -xtarget=<t> table
140 * -xtransition -Wtransition
141 * -YI,<dir> -nostdinc -I<dir>
142 */
143
144 #include <ctype.h>
145 #include <err.h>
146 #include <errno.h>
147 #include <fcntl.h>
148 #include <getopt.h>
149 #include <stdio.h>
150 #include <stdlib.h>
151 #include <stdbool.h>
152 #include <string.h>
153 #include <unistd.h>
154 #include <dirent.h>
155
156 #include <sys/param.h>
157 #include <sys/stat.h>
158 #include <sys/types.h>
159 #include <sys/utsname.h>
160 #include <sys/wait.h>
161
162 #define CW_F_CXX 0x01
163 #define CW_F_SHADOW 0x02
164 #define CW_F_EXEC 0x04
165 #define CW_F_ECHO 0x08
166 #define CW_F_XLATE 0x10
167 #define CW_F_PROG 0x20
168 #define CW_F_TIME 0x40
169
170 typedef enum cw_op {
171 CW_O_NONE = 0,
172 CW_O_PREPROCESS,
173 CW_O_COMPILE,
174 CW_O_LINK
175 } cw_op_t;
176
177 struct aelist {
178 struct ae {
179 struct ae *ae_next;
180 char *ae_arg;
181 } *ael_head, *ael_tail;
182 int ael_argc;
183 };
184
185 typedef enum {
186 GNU,
187 SUN,
188 SMATCH
189 } compiler_style_t;
190
191 typedef enum {
192 SOURCE_FILE_T_NONE,
193 SOURCE_FILE_T_C,
194 SOURCE_FILE_T_S,
195 SOURCE_FILE_T_CPP,
196 SOURCE_FILE_T_CCX,
197 SOURCE_FILE_T_I
198 } source_file_type_t;
199
200 typedef struct {
201 char *c_name;
202 char *c_path;
203 compiler_style_t c_style;
204 } cw_compiler_t;
205
206 typedef struct cw_ictx {
207 struct cw_ictx *i_next;
208 cw_compiler_t *i_compiler;
209 char *i_linker;
210 struct aelist *i_ae;
211 uint32_t i_flags;
212 int i_oldargc;
213 char **i_oldargv;
214 pid_t i_pid;
215 char *i_tmpdir;
216 char *i_stderr;
217 } cw_ictx_t;
218
219 /*
220 * Status values to indicate which Studio compiler and associated
221 * flags are being used.
222 */
223 #define M32 0x01 /* -m32 - only on Studio 12 */
224 #define M64 0x02 /* -m64 - only on Studio 12 */
225 #define SS11 0x100 /* Studio 11 */
226 #define SS12 0x200 /* Studio 12 */
227
228 #define TRANS_ENTRY 5
229 /*
230 * Translation table definition for the -xarch= flag. The "x_arg"
231 * value is translated into the appropriate gcc flags according
232 * to the values in x_trans[n]. The x_flags indicates what compiler
233 * is being used and what flags have been set via the use of
234 * "x_arg".
235 */
236 typedef struct xarch_table {
237 char *x_arg;
238 int x_flags;
239 char *x_trans[TRANS_ENTRY];
240 } xarch_table_t;
241
242 /*
243 * The translation table for the -xarch= flag used in the Studio compilers.
244 */
245 static const xarch_table_t xtbl[] = {
246 #if defined(__x86)
247 { "generic", SS11, {NULL} },
248 { "generic64", (SS11|M64), { "-m64", "-mtune=opteron" } },
249 { "amd64", (SS11|M64), { "-m64", "-mtune=opteron" } },
250 { "386", SS11, { "-march=i386" } },
251 { "pentium_pro", SS11, { "-march=pentiumpro" } },
252 { "sse", SS11, { "-msse", "-mfpmath=sse" } },
253 { "sse2", SS11, { "-msse2", "-mfpmath=sse" } },
254 #endif
255 };
256
257 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
258
259 static const char *xchip_tbl[] = {
260 #if defined(__x86)
261 "386", "-mtune=i386", NULL,
262 "486", "-mtune=i486", NULL,
263 "pentium", "-mtune=pentium", NULL,
264 "pentium_pro", "-mtune=pentiumpro", NULL,
265 #endif
266 NULL, NULL
267 };
268
269 static const char *xtarget_tbl[] = {
270 #if defined(__x86)
271 "pentium_pro", "-march=pentiumpro", NULL,
272 #endif /* __x86 */
273 NULL, NULL
274 };
275
276 static void
nomem(void)277 nomem(void)
278 {
279 errx(1, "out of memory");
280 }
281
282 static void
newae(struct aelist * ael,const char * arg)283 newae(struct aelist *ael, const char *arg)
284 {
285 struct ae *ae;
286
287 if ((ae = calloc(1, sizeof (*ae))) == NULL)
288 nomem();
289 ae->ae_arg = strdup(arg);
290 if (ael->ael_tail == NULL)
291 ael->ael_head = ae;
292 else
293 ael->ael_tail->ae_next = ae;
294 ael->ael_tail = ae;
295 ael->ael_argc++;
296 }
297
298 static cw_ictx_t *
newictx(void)299 newictx(void)
300 {
301 cw_ictx_t *ctx = calloc(1, sizeof (cw_ictx_t));
302 if (ctx)
303 if ((ctx->i_ae = calloc(1, sizeof (struct aelist))) == NULL) {
304 free(ctx);
305 return (NULL);
306 }
307
308 return (ctx);
309 }
310
311 static void
error(const char * arg)312 error(const char *arg)
313 {
314 errx(2, "error: mapping failed at or near arg '%s'", arg);
315 }
316
317 /*
318 * Add the current favourite set of warnings to the gcc invocation.
319 */
320 static void
warnings(struct aelist * h)321 warnings(struct aelist *h)
322 {
323 static int warningsonce;
324
325 if (warningsonce++)
326 return;
327
328 /*
329 * Enable as many warnings as exist, then disable those that we never
330 * ever want.
331 */
332 newae(h, "-Wall");
333 newae(h, "-Wextra");
334 }
335
336 static void
optim_disable(struct aelist * h,int level)337 optim_disable(struct aelist *h, int level)
338 {
339 if (level >= 2) {
340 newae(h, "-fno-strict-aliasing");
341 newae(h, "-fno-unit-at-a-time");
342 newae(h, "-fno-optimize-sibling-calls");
343 }
344 }
345
346 static void
Xsmode(struct aelist * h)347 Xsmode(struct aelist *h)
348 {
349 static int xsonce;
350
351 if (xsonce++)
352 return;
353
354 newae(h, "-traditional");
355 newae(h, "-traditional-cpp");
356 }
357
358 static void
usage(void)359 usage(void)
360 {
361 extern char *__progname;
362 (void) fprintf(stderr,
363 "usage: %s [-C] [--tag arg] [--versions] --primary <compiler> "
364 "[--shadow <compiler>]... -- cflags...\n",
365 __progname);
366 (void) fprintf(stderr, "compilers take the form: name,path,style\n"
367 " - name: a unique name usable in flag specifiers\n"
368 " - path: path to the compiler binary\n"
369 " - style: the style of flags expected: either sun or gnu\n");
370 exit(2);
371 }
372
373 static int
xlate_xtb(struct aelist * h,const char * xarg)374 xlate_xtb(struct aelist *h, const char *xarg)
375 {
376 int i, j;
377
378 for (i = 0; i < xtbl_size; i++) {
379 if (strcmp(xtbl[i].x_arg, xarg) == 0)
380 break;
381 }
382
383 /*
384 * At the end of the table and so no matching "arg" entry
385 * found and so this must be a bad -xarch= flag.
386 */
387 if (i == xtbl_size)
388 error(xarg);
389
390 for (j = 0; j < TRANS_ENTRY; j++) {
391 if (xtbl[i].x_trans[j] != NULL)
392 newae(h, xtbl[i].x_trans[j]);
393 else
394 break;
395 }
396 return (xtbl[i].x_flags);
397
398 }
399
400 static void
xlate(struct aelist * h,const char * xarg,const char ** table)401 xlate(struct aelist *h, const char *xarg, const char **table)
402 {
403 while (*table != NULL && strcmp(xarg, *table) != 0) {
404 while (*table != NULL)
405 table++;
406 table++;
407 }
408
409 if (*table == NULL)
410 error(xarg);
411
412 table++;
413
414 while (*table != NULL) {
415 newae(h, *table);
416 table++;
417 }
418 }
419
420 /*
421 * The compiler wants the output file to end in appropriate extension. If
422 * we're generating a name from whole cloth (path == NULL), we assume that
423 * extension to be .o, otherwise we match the extension of the caller.
424 */
425 static char *
discard_file_name(cw_ictx_t * ctx,const char * path)426 discard_file_name(cw_ictx_t *ctx, const char *path)
427 {
428 char *ret, *ext;
429 char tmpl[] = "cwXXXXXX";
430
431 if (path == NULL) {
432 ext = ".o";
433 } else {
434 ext = strrchr(path, '.');
435 }
436
437 /*
438 * We need absolute control over where the temporary file goes, since
439 * we rely on it for cleanup so tempnam(3C) and tmpnam(3C) are
440 * inappropriate (they use TMPDIR, preferentially).
441 *
442 * mkstemp(3C) doesn't actually help us, since the temporary file
443 * isn't used by us, only its name.
444 */
445 if (mktemp(tmpl) == NULL)
446 nomem();
447
448 (void) asprintf(&ret, "%s/%s%s", ctx->i_tmpdir, tmpl,
449 (ext != NULL) ? ext : "");
450
451 if (ret == NULL)
452 nomem();
453
454 return (ret);
455 }
456
457 static source_file_type_t
id_source_file(const char * path)458 id_source_file(const char *path)
459 {
460 const char *ext = strrchr(path, '.');
461
462 if ((ext == NULL) || (*(ext + 1) == '\0'))
463 return (SOURCE_FILE_T_NONE);
464
465 ext += 1;
466
467 if (strcasecmp(ext, "c") == 0) {
468 return (SOURCE_FILE_T_C);
469 } else if (strcmp(ext, "cc") == 0) {
470 return (SOURCE_FILE_T_CCX);
471 } else if (strcmp(ext, "i") == 0) {
472 return (SOURCE_FILE_T_I);
473 } else if (strcasecmp(ext, "s") == 0) {
474 return (SOURCE_FILE_T_S);
475 } else if (strcmp(ext, "cpp") == 0) {
476 return (SOURCE_FILE_T_CPP);
477 }
478
479 return (SOURCE_FILE_T_NONE);
480
481 }
482
483 static bool
is_asm_file(const char * path)484 is_asm_file(const char *path)
485 {
486 return (id_source_file(path) == SOURCE_FILE_T_S);
487 }
488
489 static void
do_gcc(cw_ictx_t * ctx)490 do_gcc(cw_ictx_t *ctx)
491 {
492 int c;
493 int nolibc = 0;
494 int in_output = 0, seen_o = 0, src_files = 0;
495 cw_op_t op = CW_O_LINK;
496 char *model = NULL;
497 char *nameflag;
498 int mflag = 0;
499 bool seen_cstd = false, check_cstd = false;
500
501 if (ctx->i_flags & CW_F_PROG) {
502 newae(ctx->i_ae, "--version");
503 return;
504 }
505
506 newae(ctx->i_ae, "-fident");
507 newae(ctx->i_ae, "-finline");
508 newae(ctx->i_ae, "-fno-inline-functions");
509 newae(ctx->i_ae, "-fno-builtin");
510 newae(ctx->i_ae, "-fno-asm");
511 newae(ctx->i_ae, "-fdiagnostics-show-option");
512 newae(ctx->i_ae, "-nodefaultlibs");
513
514 /*
515 * This is needed because 'u' is defined
516 * under a conditional on 'sun'. Should
517 * probably just remove the conditional,
518 * or make it be dependent on '__sun'.
519 *
520 * -Dunix is also missing in enhanced ANSI mode
521 */
522 newae(ctx->i_ae, "-D__sun");
523
524 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
525 nomem();
526
527 /*
528 * Walk the argument list, translating as we go ..
529 */
530 while (--ctx->i_oldargc > 0) {
531 char *arg = *++ctx->i_oldargv;
532 size_t arglen = strlen(arg);
533
534 if (*arg == '-') {
535 arglen--;
536 } else {
537 if (!in_output) {
538 source_file_type_t type = id_source_file(arg);
539 if (type != SOURCE_FILE_T_NONE)
540 src_files++;
541 if (type == SOURCE_FILE_T_C)
542 check_cstd = true;
543 }
544
545 /*
546 * Otherwise, filenames and partial arguments
547 * are passed through for gcc to chew on. However,
548 * output is always discarded for the secondary
549 * compiler.
550 */
551 if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
552 newae(ctx->i_ae, discard_file_name(ctx, arg));
553 } else {
554 newae(ctx->i_ae, arg);
555 }
556 in_output = 0;
557 continue;
558 }
559
560 if (ctx->i_flags & CW_F_CXX) {
561 if (strncmp(arg, "-_g++=", 6) == 0) {
562 newae(ctx->i_ae, strchr(arg, '=') + 1);
563 continue;
564 }
565
566 if (strcmp(arg, "-xwe") == 0) {
567 /* turn warnings into errors */
568 newae(ctx->i_ae, "-Werror");
569 continue;
570 }
571 if (strcmp(arg, "-nolib") == 0) {
572 /* -nodefaultlibs is on by default */
573 nolibc = 1;
574 continue;
575 }
576 }
577
578 switch ((c = arg[1])) {
579 case '_':
580 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
581 (strncmp(arg, "-_gcc=", 6) == 0) ||
582 (strncmp(arg, "-_gnu=", 6) == 0)) {
583 newae(ctx->i_ae, strchr(arg, '=') + 1);
584 }
585 break;
586 case '#':
587 if (arglen == 1) {
588 newae(ctx->i_ae, "-v");
589 break;
590 }
591 error(arg);
592 break;
593 case 'f':
594 if ((strcmp(arg, "-fpic") == 0) ||
595 (strcmp(arg, "-fPIC") == 0)) {
596 newae(ctx->i_ae, arg);
597 break;
598 }
599 error(arg);
600 break;
601 case 'E':
602 if (arglen == 1) {
603 newae(ctx->i_ae, "-xc");
604 newae(ctx->i_ae, arg);
605 op = CW_O_PREPROCESS;
606 nolibc = 1;
607 break;
608 }
609 error(arg);
610 break;
611 case 'c':
612 case 'S':
613 if (arglen == 1) {
614 op = CW_O_COMPILE;
615 nolibc = 1;
616 }
617 /* FALLTHROUGH */
618 case 'C':
619 case 'H':
620 case 'p':
621 if (arglen == 1) {
622 newae(ctx->i_ae, arg);
623 break;
624 }
625 error(arg);
626 break;
627 case 'A':
628 case 'g':
629 case 'I':
630 case 'i':
631 case 'L':
632 case 'l':
633 case 'R':
634 case 'U':
635 case 'u':
636 case 'w':
637 newae(ctx->i_ae, arg);
638 break;
639 case 'o':
640 seen_o = 1;
641 if (arglen == 1) {
642 in_output = 1;
643 newae(ctx->i_ae, arg);
644 } else if (ctx->i_flags & CW_F_SHADOW) {
645 newae(ctx->i_ae, "-o");
646 newae(ctx->i_ae, discard_file_name(ctx, arg));
647 } else {
648 newae(ctx->i_ae, arg);
649 }
650 break;
651 case 'D':
652 newae(ctx->i_ae, arg);
653 /*
654 * XXX Clearly a hack ... do we need _KADB too?
655 */
656 if (strcmp(arg, "-D_KERNEL") == 0 ||
657 strcmp(arg, "-D_BOOT") == 0)
658 newae(ctx->i_ae, "-ffreestanding");
659 break;
660 case 'e':
661 if (strcmp(arg, "-errtags=yes") == 0) {
662 warnings(ctx->i_ae);
663 break;
664 }
665 if (strcmp(arg, "-errwarn=%all") == 0) {
666 newae(ctx->i_ae, "-Werror");
667 break;
668 }
669 error(arg);
670 break;
671 case 'k':
672 if (strcmp(arg, "-keeptmp") == 0) {
673 newae(ctx->i_ae, "-save-temps");
674 break;
675 }
676 error(arg);
677 break;
678 case 'm':
679 if (strcmp(arg, "-mt") == 0) {
680 newae(ctx->i_ae, "-D_REENTRANT");
681 break;
682 }
683 if (strcmp(arg, "-m64") == 0) {
684 newae(ctx->i_ae, "-m64");
685 #if defined(__x86)
686 newae(ctx->i_ae, "-mtune=opteron");
687 #endif
688 mflag |= M64;
689 break;
690 }
691 if (strcmp(arg, "-m32") == 0) {
692 newae(ctx->i_ae, "-m32");
693 mflag |= M32;
694 break;
695 }
696 error(arg);
697 break;
698 case 'O':
699 if (arglen == 1) {
700 newae(ctx->i_ae, "-O");
701 break;
702 }
703 error(arg);
704 break;
705 case 'P':
706 /*
707 * We could do '-E -o filename.i', but that's hard,
708 * and we don't need it for the case that's triggering
709 * this addition. We'll require the user to specify
710 * -o in the Makefile. If they don't they'll find out
711 * in a hurry.
712 */
713 newae(ctx->i_ae, "-E");
714 op = CW_O_PREPROCESS;
715 nolibc = 1;
716 break;
717 case 's':
718 if (strcmp(arg, "-shared") == 0) {
719 newae(ctx->i_ae, "-shared");
720 nolibc = 1;
721 break;
722 }
723
724 if (strncmp(arg, "-std=", 4) == 0) {
725 seen_cstd = true;
726 newae(ctx->i_ae, arg);
727 break;
728 }
729 error(arg);
730 break;
731
732 case 'V':
733 if (arglen == 1) {
734 ctx->i_flags &= ~CW_F_ECHO;
735 newae(ctx->i_ae, "--version");
736 break;
737 }
738 error(arg);
739 break;
740 case 'v':
741 if (arglen == 1) {
742 warnings(ctx->i_ae);
743 break;
744 }
745 error(arg);
746 break;
747 case 'W':
748 if (strncmp(arg, "-Wa,", 4) == 0 ||
749 strncmp(arg, "-Wp,", 4) == 0 ||
750 strncmp(arg, "-Wl,", 4) == 0) {
751 newae(ctx->i_ae, arg);
752 break;
753 }
754
755 #if defined(__x86)
756 if (strcmp(arg, "-Wu,-save_args") == 0) {
757 newae(ctx->i_ae, "-msave-args");
758 break;
759 }
760 #endif /* __x86 */
761 error(arg);
762 break;
763 case 'X':
764 if (strcmp(arg, "-Xs") == 0) {
765 Xsmode(ctx->i_ae);
766 break;
767 }
768 error(arg);
769 break;
770 case 'x':
771 if (arglen == 1)
772 error(arg);
773 switch (arg[2]) {
774 case 'a':
775 if (strncmp(arg, "-xarch=", 7) == 0) {
776 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
777 break;
778 }
779 error(arg);
780 break;
781 case 'b':
782 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
783 if (strcmp(arg + 10, "%all"))
784 newae(ctx->i_ae, "-fbuiltin");
785 break;
786 }
787 error(arg);
788 break;
789 case 'c':
790 if (strncmp(arg, "-xc99=%all", 10) == 0) {
791 seen_cstd = true;
792 newae(ctx->i_ae, "-std=gnu99");
793 break;
794 }
795 if (strncmp(arg, "-xc99=%none", 11) == 0) {
796 seen_cstd = true;
797 newae(ctx->i_ae, "-std=gnu89");
798 break;
799 }
800 if (strncmp(arg, "-xchip=", 7) == 0) {
801 xlate(ctx->i_ae, arg + 7, xchip_tbl);
802 break;
803 }
804
805 error(arg);
806 break;
807 #if defined(__x86)
808 case 'm':
809 if (strcmp(arg, "-xmodel=kernel") == 0) {
810 newae(ctx->i_ae, "-ffreestanding");
811 newae(ctx->i_ae, "-mno-red-zone");
812 model = "-mcmodel=kernel";
813 nolibc = 1;
814 break;
815 }
816 error(arg);
817 break;
818 #endif /* __x86 */
819 case 'O':
820 if (strncmp(arg, "-xO", 3) == 0) {
821 size_t len = strlen(arg);
822 char *s = NULL;
823 int c = *(arg + 3);
824 int level;
825
826 if (len != 4 || !isdigit(c))
827 error(arg);
828
829 level = atoi(arg + 3);
830 if (level > 5)
831 error(arg);
832 if (level >= 2) {
833 /*
834 * For gcc-3.4.x at -O2 we
835 * need to disable optimizations
836 * that break ON.
837 */
838 optim_disable(ctx->i_ae, level);
839 /*
840 * limit -xO3 to -O2 as well.
841 */
842 level = 2;
843 }
844 if (asprintf(&s, "-O%d", level) == -1)
845 nomem();
846 newae(ctx->i_ae, s);
847 free(s);
848 break;
849 }
850 error(arg);
851 break;
852 case 't':
853 if (strncmp(arg, "-xtarget=", 9) == 0) {
854 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
855 break;
856 }
857 error(arg);
858 break;
859 default:
860 error(arg);
861 break;
862 }
863 break;
864 case 'Y':
865 if (arglen == 1) {
866 if ((arg = *++ctx->i_oldargv) == NULL ||
867 *arg == '\0')
868 error("-Y");
869 ctx->i_oldargc--;
870 arglen = strlen(arg + 1);
871 } else {
872 arg += 2;
873 }
874 if (strncmp(arg, "I,", 2) == 0) {
875 char *s = strdup(arg);
876 s[0] = '-';
877 s[1] = 'I';
878 newae(ctx->i_ae, "-nostdinc");
879 newae(ctx->i_ae, s);
880 free(s);
881 break;
882 }
883 error(arg);
884 break;
885 default:
886 error(arg);
887 break;
888 }
889 }
890
891 free(nameflag);
892
893 /*
894 * We would like to catch occurrences where we have left out a -std
895 * argument so we don't end up with the compiler's default. The use of
896 * check_cstd keys on seeing a .c file, which ensures that we don't
897 * check C++, assembly, or other files, though we should check C++ at
898 * some point. In addition, if we do a link in a single action, it will
899 * actually catch it as well because we will see a .c file. However, if
900 * we're doing a normal link of multiple files then it won't misfire.
901 */
902 if (check_cstd && !seen_cstd) {
903 errx(2, "missing required -std= specification");
904 }
905
906 /*
907 * When compiling multiple source files in a single invocation some
908 * compilers output objects into the current directory with
909 * predictable and conventional names.
910 *
911 * We prevent any attempt to compile multiple files at once so that
912 * any such objects created by a shadow can't escape into a later
913 * link-edit.
914 */
915 if (src_files > 1 && op != CW_O_PREPROCESS) {
916 errx(2, "multiple source files are "
917 "allowed only with -E or -P");
918 }
919
920 /*
921 * Make sure that we do not have any unintended interactions between
922 * the xarch options passed in and the version of the Studio compiler
923 * used.
924 */
925 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
926 errx(2,
927 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
928 }
929
930 switch (mflag) {
931 case 0:
932 case M32:
933 case M64:
934 case SS12:
935 case SS11:
936 case (SS11|M32):
937 case (SS11|M64):
938 case (SS12|M32):
939 case (SS12|M64):
940 break;
941 default:
942 (void) fprintf(stderr,
943 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
944 exit(2);
945 }
946
947 if (ctx->i_flags & CW_F_SHADOW) {
948 if (op == CW_O_PREPROCESS)
949 exit(0);
950 else if (op == CW_O_LINK && src_files == 0)
951 exit(0);
952 }
953
954 if (model != NULL)
955 newae(ctx->i_ae, model);
956 if (!nolibc)
957 newae(ctx->i_ae, "-lc");
958 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
959 newae(ctx->i_ae, "-o");
960 newae(ctx->i_ae, discard_file_name(ctx, NULL));
961 }
962 }
963
964 static void
do_smatch(cw_ictx_t * ctx)965 do_smatch(cw_ictx_t *ctx)
966 {
967 if (ctx->i_flags & CW_F_PROG) {
968 newae(ctx->i_ae, "--version");
969 return;
970 }
971
972 /*
973 * Some sources shouldn't run smatch at all.
974 */
975 for (int i = 0; i < ctx->i_oldargc; i++) {
976 char *arg = ctx->i_oldargv[i];
977
978 if (strcmp(arg, "-_smatch=off") == 0) {
979 ctx->i_flags &= ~(CW_F_EXEC | CW_F_ECHO);
980 return;
981 }
982
983 /* smatch can't handle asm */
984 if ((arg[0] != '-') && is_asm_file(arg)) {
985 ctx->i_flags &= ~(CW_F_EXEC | CW_F_ECHO);
986 return;
987 }
988 }
989
990 /*
991 * smatch can handle gcc's options.
992 */
993 do_gcc(ctx);
994 }
995
996 static void
do_cc(cw_ictx_t * ctx)997 do_cc(cw_ictx_t *ctx)
998 {
999 int in_output = 0, seen_o = 0, c_files = 0;
1000 cw_op_t op = CW_O_LINK;
1001 char *nameflag;
1002
1003 if (ctx->i_flags & CW_F_PROG) {
1004 newae(ctx->i_ae, "-V");
1005 return;
1006 }
1007
1008 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1009 nomem();
1010
1011 while (--ctx->i_oldargc > 0) {
1012 char *arg = *++ctx->i_oldargv;
1013
1014 if (strncmp(arg, "-_CC=", 5) == 0) {
1015 newae(ctx->i_ae, strchr(arg, '=') + 1);
1016 continue;
1017 }
1018
1019 if (*arg != '-') {
1020 if (!in_output && id_source_file(arg) !=
1021 SOURCE_FILE_T_NONE)
1022 c_files++;
1023
1024 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1025 newae(ctx->i_ae, arg);
1026 } else {
1027 in_output = 0;
1028 newae(ctx->i_ae, discard_file_name(ctx, arg));
1029 }
1030 continue;
1031 }
1032 switch (*(arg + 1)) {
1033 case '_':
1034 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1035 (strncmp(arg, "-_cc=", 5) == 0) ||
1036 (strncmp(arg, "-_sun=", 6) == 0)) {
1037 newae(ctx->i_ae, strchr(arg, '=') + 1);
1038 }
1039 break;
1040
1041 case 'V':
1042 ctx->i_flags &= ~CW_F_ECHO;
1043 newae(ctx->i_ae, arg);
1044 break;
1045 case 'o':
1046 seen_o = 1;
1047 if (strlen(arg) == 2) {
1048 in_output = 1;
1049 newae(ctx->i_ae, arg);
1050 } else if (ctx->i_flags & CW_F_SHADOW) {
1051 newae(ctx->i_ae, "-o");
1052 newae(ctx->i_ae, discard_file_name(ctx, arg));
1053 } else {
1054 newae(ctx->i_ae, arg);
1055 }
1056 break;
1057 case 'c':
1058 case 'S':
1059 if (strlen(arg) == 2)
1060 op = CW_O_COMPILE;
1061 newae(ctx->i_ae, arg);
1062 break;
1063 case 'E':
1064 case 'P':
1065 if (strlen(arg) == 2)
1066 op = CW_O_PREPROCESS;
1067 /*FALLTHROUGH*/
1068 default:
1069 newae(ctx->i_ae, arg);
1070 }
1071 }
1072
1073 free(nameflag);
1074
1075 /* See the comment on this same code in do_gcc() */
1076 if (c_files > 1 && op != CW_O_PREPROCESS) {
1077 errx(2, "multiple source files are "
1078 "allowed only with -E or -P");
1079 }
1080
1081 if (ctx->i_flags & CW_F_SHADOW) {
1082 if (op == CW_O_PREPROCESS)
1083 exit(0);
1084 else if (op == CW_O_LINK && c_files == 0)
1085 exit(0);
1086 }
1087
1088 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1089 newae(ctx->i_ae, "-o");
1090 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1091 }
1092 }
1093
1094 static void
prepctx(cw_ictx_t * ctx)1095 prepctx(cw_ictx_t *ctx)
1096 {
1097 newae(ctx->i_ae, ctx->i_compiler->c_path);
1098
1099 if (ctx->i_flags & CW_F_PROG) {
1100 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1101 "shadow" : "primary", ctx->i_compiler->c_path);
1102 (void) fflush(stdout);
1103 }
1104
1105 /*
1106 * If LD_ALTEXEC is already set, the expectation would be that that
1107 * link-editor is run, as such we need to leave it the environment
1108 * alone and let that happen.
1109 */
1110 if ((ctx->i_linker != NULL) && (getenv("LD_ALTEXEC") == NULL))
1111 setenv("LD_ALTEXEC", ctx->i_linker, 1);
1112
1113 if (!(ctx->i_flags & CW_F_XLATE))
1114 return;
1115
1116 switch (ctx->i_compiler->c_style) {
1117 case SUN:
1118 do_cc(ctx);
1119 break;
1120 case GNU:
1121 do_gcc(ctx);
1122 break;
1123 case SMATCH:
1124 do_smatch(ctx);
1125 break;
1126 }
1127 }
1128
1129 static int
invoke(cw_ictx_t * ctx)1130 invoke(cw_ictx_t *ctx)
1131 {
1132 char **newargv, *makeflags;
1133 int ac;
1134 struct ae *a;
1135
1136 newargv = calloc(ctx->i_ae->ael_argc + 1, sizeof (*newargv));
1137 if (newargv == NULL)
1138 nomem();
1139
1140 /*
1141 * Check to see if the silent make flag is present (-s), if so, do not
1142 * echo. The MAKEFLAGS environment variable is set by dmake. By
1143 * observation it appears to place short flags without any arguments
1144 * first followed by any long form flags or flags with arguments.
1145 */
1146 makeflags = getenv("MAKEFLAGS");
1147 if (makeflags != NULL) {
1148 size_t makeflags_len = strlen(makeflags);
1149 for (size_t i = 0; i < makeflags_len; i++) {
1150 if (makeflags[i] == 's') {
1151 ctx->i_flags &= ~CW_F_ECHO;
1152 break;
1153 }
1154 /* end of short flags */
1155 if (makeflags[i] == ' ')
1156 break;
1157 }
1158 }
1159
1160 if (ctx->i_flags & CW_F_ECHO)
1161 (void) fprintf(stderr, "+ ");
1162
1163 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1164 newargv[ac] = a->ae_arg;
1165 if (ctx->i_flags & CW_F_ECHO)
1166 (void) fprintf(stderr, "%s ", a->ae_arg);
1167 if (a == ctx->i_ae->ael_tail)
1168 break;
1169 }
1170
1171 if (ctx->i_flags & CW_F_ECHO) {
1172 (void) fprintf(stderr, "\n");
1173 (void) fflush(stderr);
1174 }
1175
1176 if (!(ctx->i_flags & CW_F_EXEC))
1177 return (0);
1178
1179 /*
1180 * We must fix up the environment here so that the dependency files are
1181 * not trampled by the shadow compiler. Also take care of GCC
1182 * environment variables that will throw off gcc. This assumes a primary
1183 * gcc.
1184 */
1185 if ((ctx->i_flags & CW_F_SHADOW) &&
1186 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1187 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1188 unsetenv("GCC_ROOT") != 0)) {
1189 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1190 strerror(errno));
1191 return (-1);
1192 }
1193
1194 (void) execv(newargv[0], newargv);
1195 warn("couldn't run %s", newargv[0]);
1196
1197 return (-1);
1198 }
1199
1200 static int
reap(cw_ictx_t * ctx)1201 reap(cw_ictx_t *ctx)
1202 {
1203 int status, ret = 0;
1204 char buf[1024];
1205 struct stat s;
1206 struct rusage res;
1207
1208 /*
1209 * Only wait for one specific child.
1210 */
1211 if (ctx->i_pid <= 0)
1212 return (-1);
1213
1214 do {
1215 if (wait4(ctx->i_pid, &status, 0, &res) < 0) {
1216 warn("cannot reap child");
1217 return (-1);
1218 }
1219 if (status != 0) {
1220 if (WIFSIGNALED(status)) {
1221 ret = -WTERMSIG(status);
1222 break;
1223 } else if (WIFEXITED(status)) {
1224 ret = WEXITSTATUS(status);
1225 break;
1226 }
1227 }
1228 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1229 if (ctx->i_flags & CW_F_TIME) {
1230 (void) fprintf(stderr, "+ %s: user time: %ld.%6.6ld "
1231 "system time: %ld.%6.6ld\n",
1232 ctx->i_compiler->c_name,
1233 res.ru_utime.tv_sec,
1234 res.ru_utime.tv_usec,
1235 res.ru_stime.tv_sec,
1236 res.ru_stime.tv_usec);
1237 }
1238
1239 if (stat(ctx->i_stderr, &s) < 0) {
1240 warn("stat failed on child cleanup");
1241 return (-1);
1242 }
1243 if (s.st_size != 0) {
1244 FILE *f;
1245
1246 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1247 while (fgets(buf, sizeof (buf), f))
1248 (void) fprintf(stderr, "%s", buf);
1249 (void) fflush(stderr);
1250 (void) fclose(f);
1251 }
1252 }
1253 (void) unlink(ctx->i_stderr);
1254 free(ctx->i_stderr);
1255
1256 /*
1257 * cc returns an error code when given -V; we want that to succeed.
1258 */
1259 if (ctx->i_flags & CW_F_PROG)
1260 return (0);
1261
1262 return (ret);
1263 }
1264
1265 static int
exec_ctx(cw_ictx_t * ctx,int block)1266 exec_ctx(cw_ictx_t *ctx, int block)
1267 {
1268 if ((ctx->i_stderr = tempnam(ctx->i_tmpdir, "cw")) == NULL) {
1269 nomem();
1270 return (-1);
1271 }
1272
1273 if ((ctx->i_pid = fork()) == 0) {
1274 int fd;
1275
1276 (void) fclose(stderr);
1277 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1278 0666)) < 0) {
1279 err(1, "open failed for standard error");
1280 }
1281 if (dup2(fd, 2) < 0) {
1282 err(1, "dup2 failed for standard error");
1283 }
1284 if (fd != 2)
1285 (void) close(fd);
1286 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1287 err(1, "freopen failed for /dev/fd/2");
1288 }
1289
1290 prepctx(ctx);
1291 exit(invoke(ctx));
1292 }
1293
1294 if (ctx->i_pid < 0) {
1295 err(1, "fork failed");
1296 }
1297
1298 if (block)
1299 return (reap(ctx));
1300
1301 return (0);
1302 }
1303
1304 static void
parse_compiler(const char * spec,cw_compiler_t * compiler)1305 parse_compiler(const char *spec, cw_compiler_t *compiler)
1306 {
1307 char *tspec, *token;
1308
1309 if ((tspec = strdup(spec)) == NULL)
1310 nomem();
1311
1312 if ((token = strsep(&tspec, ",")) == NULL)
1313 errx(1, "Compiler is missing a name: %s", spec);
1314 compiler->c_name = token;
1315
1316 if ((token = strsep(&tspec, ",")) == NULL)
1317 errx(1, "Compiler is missing a path: %s", spec);
1318 compiler->c_path = token;
1319
1320 if ((token = strsep(&tspec, ",")) == NULL)
1321 errx(1, "Compiler is missing a style: %s", spec);
1322
1323 if ((strcasecmp(token, "gnu") == 0) ||
1324 (strcasecmp(token, "gcc") == 0)) {
1325 compiler->c_style = GNU;
1326 } else if ((strcasecmp(token, "sun") == 0) ||
1327 (strcasecmp(token, "cc") == 0)) {
1328 compiler->c_style = SUN;
1329 } else if ((strcasecmp(token, "smatch") == 0)) {
1330 compiler->c_style = SMATCH;
1331 } else {
1332 errx(1, "unknown compiler style: %s", token);
1333 }
1334
1335 if (tspec != NULL)
1336 errx(1, "Excess tokens in compiler: %s", spec);
1337 }
1338
1339 static void
cleanup(cw_ictx_t * ctx)1340 cleanup(cw_ictx_t *ctx)
1341 {
1342 DIR *dirp;
1343 struct dirent *dp;
1344 char buf[MAXPATHLEN];
1345
1346 if ((dirp = opendir(ctx->i_tmpdir)) == NULL) {
1347 if (errno != ENOENT) {
1348 err(1, "couldn't open temp directory: %s",
1349 ctx->i_tmpdir);
1350 } else {
1351 return;
1352 }
1353 }
1354
1355 errno = 0;
1356 while ((dp = readdir(dirp)) != NULL) {
1357 (void) snprintf(buf, MAXPATHLEN, "%s/%s", ctx->i_tmpdir,
1358 dp->d_name);
1359
1360 if (strcmp(dp->d_name, ".") == 0 ||
1361 strcmp(dp->d_name, "..") == 0) {
1362 continue;
1363 }
1364
1365 if (unlink(buf) == -1)
1366 err(1, "failed to unlink temp file: %s", dp->d_name);
1367 errno = 0;
1368 }
1369
1370 if (errno != 0) {
1371 err(1, "failed to read temporary directory: %s",
1372 ctx->i_tmpdir);
1373 }
1374
1375 (void) closedir(dirp);
1376 if (rmdir(ctx->i_tmpdir) != 0) {
1377 err(1, "failed to unlink temporary directory: %s",
1378 ctx->i_tmpdir);
1379 }
1380 }
1381
1382 int
main(int argc,char ** argv)1383 main(int argc, char **argv)
1384 {
1385 int ch;
1386 cw_compiler_t primary = { NULL, NULL, 0 };
1387 cw_compiler_t shadows[10];
1388 int nshadows = 0;
1389 int ret = 0;
1390 bool do_serial;
1391 bool do_exec;
1392 bool vflg = false;
1393 bool Cflg = false;
1394 bool cflg = false;
1395 bool nflg = false;
1396 bool Tflg = false;
1397 char *tmpdir;
1398
1399 cw_ictx_t *main_ctx;
1400
1401 static struct option longopts[] = {
1402 { "compiler", no_argument, NULL, 'c' },
1403 { "linker", required_argument, NULL, 'l' },
1404 { "noecho", no_argument, NULL, 'n' },
1405 { "primary", required_argument, NULL, 'p' },
1406 { "shadow", required_argument, NULL, 's' },
1407 { "tag", required_argument, NULL, 't' },
1408 { "time", no_argument, NULL, 'T' },
1409 { "versions", no_argument, NULL, 'v' },
1410 { NULL, 0, NULL, 0 },
1411 };
1412
1413
1414 if ((main_ctx = newictx()) == NULL)
1415 nomem();
1416
1417 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1418 switch (ch) {
1419 case 'c':
1420 cflg = true;
1421 break;
1422 case 'C':
1423 Cflg = true;
1424 break;
1425 case 'l':
1426 if ((main_ctx->i_linker = strdup(optarg)) == NULL)
1427 nomem();
1428 break;
1429 case 'n':
1430 nflg = true;
1431 break;
1432 case 'p':
1433 if (primary.c_path != NULL) {
1434 warnx("Only one primary compiler may "
1435 "be specified");
1436 usage();
1437 }
1438
1439 parse_compiler(optarg, &primary);
1440 break;
1441 case 's':
1442 if (nshadows >= 10)
1443 errx(1, "May only use 10 shadows at "
1444 "the moment");
1445 parse_compiler(optarg, &shadows[nshadows]);
1446 nshadows++;
1447 break;
1448 case 't': /* Ignored, a diagnostic in build logs only */
1449 break;
1450 case 'T':
1451 Tflg = true;
1452 break;
1453 case 'v':
1454 vflg = true;
1455 break;
1456 default:
1457 (void) fprintf(stderr, "Did you forget '--'?\n");
1458 usage();
1459 }
1460 }
1461
1462 if (primary.c_path == NULL) {
1463 warnx("A primary compiler must be specified");
1464 usage();
1465 }
1466
1467 do_serial = getenv("CW_SHADOW_SERIAL") != NULL;
1468 do_exec = getenv("CW_NO_EXEC") == NULL;
1469
1470 /* Leave room for argv[0] */
1471 argc -= (optind - 1);
1472 argv += (optind - 1);
1473
1474 main_ctx->i_oldargc = argc;
1475 main_ctx->i_oldargv = argv;
1476 main_ctx->i_flags = CW_F_XLATE;
1477 if (nflg == 0)
1478 main_ctx->i_flags |= CW_F_ECHO;
1479 if (do_exec)
1480 main_ctx->i_flags |= CW_F_EXEC;
1481 if (Cflg)
1482 main_ctx->i_flags |= CW_F_CXX;
1483 if (Tflg)
1484 main_ctx->i_flags |= CW_F_TIME;
1485 main_ctx->i_compiler = &primary;
1486
1487 if (cflg) {
1488 (void) fputs(primary.c_path, stdout);
1489 }
1490
1491 if (vflg) {
1492 (void) printf("cw version %s\n", CW_VERSION);
1493 (void) fflush(stdout);
1494 main_ctx->i_flags &= ~CW_F_ECHO;
1495 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1496 do_serial = 1;
1497 }
1498
1499 tmpdir = getenv("TMPDIR");
1500 if (tmpdir == NULL)
1501 tmpdir = "/tmp";
1502
1503 if (asprintf(&main_ctx->i_tmpdir, "%s/cw.XXXXXX", tmpdir) == -1)
1504 nomem();
1505
1506 if ((main_ctx->i_tmpdir = mkdtemp(main_ctx->i_tmpdir)) == NULL)
1507 errx(1, "failed to create temporary directory");
1508
1509 ret |= exec_ctx(main_ctx, do_serial);
1510
1511 for (int i = 0; i < nshadows; i++) {
1512 int r;
1513 cw_ictx_t *shadow_ctx;
1514
1515 if ((shadow_ctx = newictx()) == NULL)
1516 nomem();
1517
1518 (void) memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1519
1520 shadow_ctx->i_flags |= CW_F_SHADOW;
1521 shadow_ctx->i_compiler = &shadows[i];
1522
1523 r = exec_ctx(shadow_ctx, do_serial);
1524 if (r == 0) {
1525 shadow_ctx->i_next = main_ctx->i_next;
1526 main_ctx->i_next = shadow_ctx;
1527 }
1528 ret |= r;
1529 }
1530
1531 if (!do_serial) {
1532 cw_ictx_t *next = main_ctx;
1533 while (next != NULL) {
1534 cw_ictx_t *toreap = next;
1535 next = next->i_next;
1536 ret |= reap(toreap);
1537 }
1538 }
1539
1540 cleanup(main_ctx);
1541 return (ret);
1542 }
1543