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 char *i_linker;
310 struct aelist *i_ae;
311 uint32_t i_flags;
312 int i_oldargc;
313 char **i_oldargv;
314 pid_t i_pid;
315 char *i_tmpdir;
316 char *i_stderr;
317 } cw_ictx_t;
318
319 /*
320 * Status values to indicate which Studio compiler and associated
321 * flags are being used.
322 */
323 #define M32 0x01 /* -m32 - only on Studio 12 */
324 #define M64 0x02 /* -m64 - only on Studio 12 */
325 #define SS11 0x100 /* Studio 11 */
326 #define SS12 0x200 /* Studio 12 */
327
328 #define TRANS_ENTRY 5
329 /*
330 * Translation table definition for the -xarch= flag. The "x_arg"
331 * value is translated into the appropriate gcc flags according
332 * to the values in x_trans[n]. The x_flags indicates what compiler
333 * is being used and what flags have been set via the use of
334 * "x_arg".
335 */
336 typedef struct xarch_table {
337 char *x_arg;
338 int x_flags;
339 char *x_trans[TRANS_ENTRY];
340 } xarch_table_t;
341
342 /*
343 * The translation table for the -xarch= flag used in the Studio compilers.
344 */
345 static const xarch_table_t xtbl[] = {
346 #if defined(__x86)
347 { "generic", SS11, {NULL} },
348 { "generic64", (SS11|M64), { "-m64", "-mtune=opteron" } },
349 { "amd64", (SS11|M64), { "-m64", "-mtune=opteron" } },
350 { "386", SS11, { "-march=i386" } },
351 { "pentium_pro", SS11, { "-march=pentiumpro" } },
352 { "sse", SS11, { "-msse", "-mfpmath=sse" } },
353 { "sse2", SS11, { "-msse2", "-mfpmath=sse" } },
354 #elif defined(__sparc)
355 { "generic", (SS11|M32), { "-m32", "-mcpu=v8" } },
356 { "generic64", (SS11|M64), { "-m64", "-mcpu=v9" } },
357 { "v8", (SS11|M32), { "-m32", "-mcpu=v8", "-mno-v8plus" } },
358 { "v8plus", (SS11|M32), { "-m32", "-mcpu=v9", "-mv8plus" } },
359 { "v8plusa", (SS11|M32), { "-m32", "-mcpu=ultrasparc", "-mv8plus",
360 "-mvis" } },
361 { "v8plusb", (SS11|M32), { "-m32", "-mcpu=ultrasparc3", "-mv8plus",
362 "-mvis" } },
363 { "v9", (SS11|M64), { "-m64", "-mcpu=v9" } },
364 { "v9a", (SS11|M64), { "-m64", "-mcpu=ultrasparc", "-mvis" } },
365 { "v9b", (SS11|M64), { "-m64", "-mcpu=ultrasparc3", "-mvis" } },
366 { "sparc", SS12, { "-mcpu=v9", "-mv8plus" } },
367 { "sparcvis", SS12, { "-mcpu=ultrasparc", "-mvis" } },
368 { "sparcvis2", SS12, { "-mcpu=ultrasparc3", "-mvis" } }
369 #endif
370 };
371
372 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
373
374 static const char *xchip_tbl[] = {
375 #if defined(__x86)
376 "386", "-mtune=i386", NULL,
377 "486", "-mtune=i486", NULL,
378 "pentium", "-mtune=pentium", NULL,
379 "pentium_pro", "-mtune=pentiumpro", NULL,
380 #elif defined(__sparc)
381 "super", "-mtune=supersparc", NULL,
382 "ultra", "-mtune=ultrasparc", NULL,
383 "ultra3", "-mtune=ultrasparc3", NULL,
384 #endif
385 NULL, NULL
386 };
387
388 static const char *xcode_tbl[] = {
389 #if defined(__sparc)
390 "abs32", "-fno-pic", "-mcmodel=medlow", NULL,
391 "abs44", "-fno-pic", "-mcmodel=medmid", NULL,
392 "abs64", "-fno-pic", "-mcmodel=medany", NULL,
393 "pic13", "-fpic", NULL,
394 "pic32", "-fPIC", NULL,
395 #endif
396 NULL, NULL
397 };
398
399 static const char *xtarget_tbl[] = {
400 #if defined(__x86)
401 "pentium_pro", "-march=pentiumpro", NULL,
402 #endif /* __x86 */
403 NULL, NULL
404 };
405
406 static const char *xregs_tbl[] = {
407 #if defined(__sparc)
408 "appl", "-mapp-regs", NULL,
409 "no%appl", "-mno-app-regs", NULL,
410 "float", "-mfpu", NULL,
411 "no%float", "-mno-fpu", NULL,
412 #endif /* __sparc */
413 NULL, NULL
414 };
415
416 static void
417 nomem(void)
418 {
419 errx(1, "out of memory");
420 }
421
422 static void
423 newae(struct aelist *ael, const char *arg)
424 {
425 struct ae *ae;
426
427 if ((ae = calloc(sizeof (*ae), 1)) == NULL)
428 nomem();
429 ae->ae_arg = strdup(arg);
430 if (ael->ael_tail == NULL)
431 ael->ael_head = ae;
432 else
433 ael->ael_tail->ae_next = ae;
434 ael->ael_tail = ae;
435 ael->ael_argc++;
436 }
437
438 static cw_ictx_t *
439 newictx(void)
440 {
441 cw_ictx_t *ctx = calloc(sizeof (cw_ictx_t), 1);
442 if (ctx)
443 if ((ctx->i_ae = calloc(sizeof (struct aelist), 1)) == NULL) {
444 free(ctx);
445 return (NULL);
446 }
447
448 return (ctx);
449 }
450
451 static void
452 error(const char *arg)
453 {
454 errx(2, "error: mapping failed at or near arg '%s'", arg);
455 }
456
457 /*
458 * Add the current favourite set of warnings to the gcc invocation.
459 */
460 static void
461 warnings(struct aelist *h)
462 {
463 static int warningsonce;
464
465 if (warningsonce++)
466 return;
467
468 /*
469 * Enable as many warnings as exist, then disable those that we never
470 * ever want.
471 */
472 newae(h, "-Wall");
473 newae(h, "-Wextra");
474 }
475
476 static void
477 optim_disable(struct aelist *h, int level)
478 {
479 if (level >= 2) {
480 newae(h, "-fno-strict-aliasing");
481 newae(h, "-fno-unit-at-a-time");
482 newae(h, "-fno-optimize-sibling-calls");
483 }
484 }
485
486 static void
487 Xsmode(struct aelist *h)
488 {
489 static int xsonce;
490
491 if (xsonce++)
492 return;
493
494 newae(h, "-traditional");
495 newae(h, "-traditional-cpp");
496 }
497
498 static void
499 usage()
500 {
501 extern char *__progname;
502 (void) fprintf(stderr,
503 "usage: %s [-C] [--versions] --primary <compiler> "
504 "[--shadow <compiler>]... -- cflags...\n",
505 __progname);
506 (void) fprintf(stderr, "compilers take the form: name,path,style\n"
507 " - name: a unique name usable in flag specifiers\n"
508 " - path: path to the compiler binary\n"
509 " - style: the style of flags expected: either sun or gnu\n");
510 exit(2);
511 }
512
513 static int
514 xlate_xtb(struct aelist *h, const char *xarg)
515 {
516 int i, j;
517
518 for (i = 0; i < xtbl_size; i++) {
519 if (strcmp(xtbl[i].x_arg, xarg) == 0)
520 break;
521 }
522
523 /*
524 * At the end of the table and so no matching "arg" entry
525 * found and so this must be a bad -xarch= flag.
526 */
527 if (i == xtbl_size)
528 error(xarg);
529
530 for (j = 0; j < TRANS_ENTRY; j++) {
531 if (xtbl[i].x_trans[j] != NULL)
532 newae(h, xtbl[i].x_trans[j]);
533 else
534 break;
535 }
536 return (xtbl[i].x_flags);
537
538 }
539
540 static void
541 xlate(struct aelist *h, const char *xarg, const char **table)
542 {
543 while (*table != NULL && strcmp(xarg, *table) != 0) {
544 while (*table != NULL)
545 table++;
546 table++;
547 }
548
549 if (*table == NULL)
550 error(xarg);
551
552 table++;
553
554 while (*table != NULL) {
555 newae(h, *table);
556 table++;
557 }
558 }
559
560 /*
561 * The compiler wants the output file to end in appropriate extension. If
562 * we're generating a name from whole cloth (path == NULL), we assume that
563 * extension to be .o, otherwise we match the extension of the caller.
564 */
565 static char *
566 discard_file_name(cw_ictx_t *ctx, const char *path)
567 {
568 char *ret, *ext;
569 char tmpl[] = "cwXXXXXX";
570
571 if (path == NULL) {
572 ext = ".o";
573 } else {
574 ext = strrchr(path, '.');
575 }
576
577 /*
578 * We need absolute control over where the temporary file goes, since
579 * we rely on it for cleanup so tempnam(3C) and tmpnam(3C) are
580 * inappropriate (they use TMPDIR, preferentially).
581 *
582 * mkstemp(3C) doesn't actually help us, since the temporary file
583 * isn't used by us, only its name.
584 */
585 if (mktemp(tmpl) == NULL)
586 nomem();
587
588 (void) asprintf(&ret, "%s/%s%s", ctx->i_tmpdir, tmpl,
589 (ext != NULL) ? ext : "");
590
591 if (ret == NULL)
592 nomem();
593
594 return (ret);
595 }
596
597 static boolean_t
598 is_source_file(const char *path)
599 {
600 char *ext = strrchr(path, '.');
601
602 if ((ext == NULL) || (*(ext + 1) == '\0'))
603 return (B_FALSE);
604
605 ext += 1;
606
607 if ((strcasecmp(ext, "c") == 0) ||
608 (strcmp(ext, "cc") == 0) ||
609 (strcmp(ext, "i") == 0) ||
610 (strcasecmp(ext, "s") == 0) ||
611 (strcmp(ext, "cpp") == 0)) {
612 return (B_TRUE);
613 }
614
615 return (B_FALSE);
616 }
617
618
619 static void
620 do_gcc(cw_ictx_t *ctx)
621 {
622 int c;
623 int nolibc = 0;
624 int in_output = 0, seen_o = 0, c_files = 0;
625 cw_op_t op = CW_O_LINK;
626 char *model = NULL;
627 char *nameflag;
628 int mflag = 0;
629
630 if (ctx->i_flags & CW_F_PROG) {
631 newae(ctx->i_ae, "--version");
632 return;
633 }
634
635 newae(ctx->i_ae, "-fident");
636 newae(ctx->i_ae, "-finline");
637 newae(ctx->i_ae, "-fno-inline-functions");
638 newae(ctx->i_ae, "-fno-builtin");
639 newae(ctx->i_ae, "-fno-asm");
640 newae(ctx->i_ae, "-fdiagnostics-show-option");
641 newae(ctx->i_ae, "-nodefaultlibs");
642
643 #if defined(__sparc)
644 /*
645 * The SPARC ldd and std instructions require 8-byte alignment of
646 * their address operand. gcc correctly uses them only when the
647 * ABI requires 8-byte alignment; unfortunately we have a number of
648 * pieces of buggy code that doesn't conform to the ABI. This
649 * flag makes gcc work more like Studio with -xmemalign=4.
650 */
651 newae(ctx->i_ae, "-mno-integer-ldd-std");
652 #endif
653
654 /*
655 * This is needed because 'u' is defined
656 * under a conditional on 'sun'. Should
657 * probably just remove the conditional,
658 * or make it be dependent on '__sun'.
659 *
660 * -Dunix is also missing in enhanced ANSI mode
661 */
662 newae(ctx->i_ae, "-D__sun");
663
664 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
665 nomem();
666
667 /*
668 * Walk the argument list, translating as we go ..
669 */
670 while (--ctx->i_oldargc > 0) {
671 char *arg = *++ctx->i_oldargv;
672 size_t arglen = strlen(arg);
673
674 if (*arg == '-') {
675 arglen--;
676 } else {
677 /*
678 * Discard inline files that gcc doesn't grok
679 */
680 if (!in_output && arglen > 3 &&
681 strcmp(arg + arglen - 3, ".il") == 0)
682 continue;
683
684 if (!in_output && is_source_file(arg))
685 c_files++;
686
687 /*
688 * Otherwise, filenames and partial arguments
689 * are passed through for gcc to chew on. However,
690 * output is always discarded for the secondary
691 * compiler.
692 */
693 if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
694 newae(ctx->i_ae, discard_file_name(ctx, arg));
695 } else {
696 newae(ctx->i_ae, arg);
697 }
698 in_output = 0;
699 continue;
700 }
701
702 if (ctx->i_flags & CW_F_CXX) {
703 if (strncmp(arg, "-_g++=", 6) == 0) {
704 newae(ctx->i_ae, strchr(arg, '=') + 1);
705 continue;
706 }
707 if (strncmp(arg, "-compat=", 8) == 0) {
708 /* discard -compat=4 and -compat=5 */
709 continue;
710 }
711 if (strcmp(arg, "-Qoption") == 0) {
712 /* discard -Qoption and its two arguments */
713 if (ctx->i_oldargc < 3)
714 error(arg);
715 ctx->i_oldargc -= 2;
716 ctx->i_oldargv += 2;
717 continue;
718 }
719 if (strcmp(arg, "-xwe") == 0) {
720 /* turn warnings into errors */
721 newae(ctx->i_ae, "-Werror");
722 continue;
723 }
724 if (strcmp(arg, "-norunpath") == 0) {
725 /* gcc has no corresponding option */
726 continue;
727 }
728 if (strcmp(arg, "-nolib") == 0) {
729 /* -nodefaultlibs is on by default */
730 nolibc = 1;
731 continue;
732 }
733 #if defined(__sparc)
734 if (strcmp(arg, "-cg92") == 0) {
735 mflag |= xlate_xtb(ctx->i_ae, "v8");
736 xlate(ctx->i_ae, "super", xchip_tbl);
737 continue;
738 }
739 #endif /* __sparc */
740 }
741
742 switch ((c = arg[1])) {
743 case '_':
744 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
745 (strncmp(arg, "-_gcc=", 6) == 0) ||
746 (strncmp(arg, "-_gnu=", 6) == 0)) {
747 newae(ctx->i_ae, strchr(arg, '=') + 1);
748 }
749 break;
750 case '#':
751 if (arglen == 1) {
752 newae(ctx->i_ae, "-v");
753 break;
754 }
755 error(arg);
756 break;
757 case 'f':
758 if ((strcmp(arg, "-fpic") == 0) ||
759 (strcmp(arg, "-fPIC") == 0)) {
760 newae(ctx->i_ae, arg);
761 break;
762 }
763 error(arg);
764 break;
765 case 'E':
766 if (arglen == 1) {
767 newae(ctx->i_ae, "-xc");
768 newae(ctx->i_ae, arg);
769 op = CW_O_PREPROCESS;
770 nolibc = 1;
771 break;
772 }
773 error(arg);
774 break;
775 case 'c':
776 case 'S':
777 if (arglen == 1) {
778 op = CW_O_COMPILE;
779 nolibc = 1;
780 }
781 /* FALLTHROUGH */
782 case 'C':
783 case 'H':
784 case 'p':
785 if (arglen == 1) {
786 newae(ctx->i_ae, arg);
787 break;
788 }
789 error(arg);
790 break;
791 case 'A':
792 case 'g':
793 case 'h':
794 case 'I':
795 case 'i':
796 case 'L':
797 case 'l':
798 case 'R':
799 case 'U':
800 case 'u':
801 case 'w':
802 newae(ctx->i_ae, arg);
803 break;
804 case 'o':
805 seen_o = 1;
806 if (arglen == 1) {
807 in_output = 1;
808 newae(ctx->i_ae, arg);
809 } else if (ctx->i_flags & CW_F_SHADOW) {
810 newae(ctx->i_ae, "-o");
811 newae(ctx->i_ae, discard_file_name(ctx, arg));
812 } else {
813 newae(ctx->i_ae, arg);
814 }
815 break;
816 case 'D':
817 newae(ctx->i_ae, arg);
818 /*
819 * XXX Clearly a hack ... do we need _KADB too?
820 */
821 if (strcmp(arg, "-D_KERNEL") == 0 ||
822 strcmp(arg, "-D_BOOT") == 0)
823 newae(ctx->i_ae, "-ffreestanding");
824 break;
825 case 'd':
826 if (arglen == 2) {
827 if (strcmp(arg, "-dy") == 0) {
828 newae(ctx->i_ae, "-Wl,-dy");
829 break;
830 }
831 if (strcmp(arg, "-dn") == 0) {
832 newae(ctx->i_ae, "-Wl,-dn");
833 break;
834 }
835 }
836 if (strcmp(arg, "-dalign") == 0) {
837 /*
838 * -dalign forces alignment in some cases;
839 * gcc does not need any flag to do this.
840 */
841 break;
842 }
843 error(arg);
844 break;
845 case 'e':
846 if (strcmp(arg,
847 "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
848 /*
849 * Accept but ignore this -- gcc doesn't
850 * seem to complain about empty translation
851 * units
852 */
853 break;
854 }
855 /* XX64 -- ignore all -erroff= options, for now */
856 if (strncmp(arg, "-erroff=", 8) == 0)
857 break;
858 if (strcmp(arg, "-errtags=yes") == 0) {
859 warnings(ctx->i_ae);
860 break;
861 }
862 if (strcmp(arg, "-errwarn=%all") == 0) {
863 newae(ctx->i_ae, "-Werror");
864 break;
865 }
866 error(arg);
867 break;
868 case 'G':
869 newae(ctx->i_ae, "-shared");
870 nolibc = 1;
871 break;
872 case 'k':
873 if (strcmp(arg, "-keeptmp") == 0) {
874 newae(ctx->i_ae, "-save-temps");
875 break;
876 }
877 error(arg);
878 break;
879 case 'm':
880 if (strcmp(arg, "-mt") == 0) {
881 newae(ctx->i_ae, "-D_REENTRANT");
882 break;
883 }
884 if (strcmp(arg, "-m64") == 0) {
885 newae(ctx->i_ae, "-m64");
886 #if defined(__x86)
887 newae(ctx->i_ae, "-mtune=opteron");
888 #endif
889 mflag |= M64;
890 break;
891 }
892 if (strcmp(arg, "-m32") == 0) {
893 newae(ctx->i_ae, "-m32");
894 mflag |= M32;
895 break;
896 }
897 error(arg);
898 break;
899 case 'B': /* linker options */
900 case 'M':
901 case 'z':
902 {
903 char *opt;
904 size_t len;
905 char *s;
906
907 if (arglen == 1) {
908 opt = *++ctx->i_oldargv;
909 if (opt == NULL || *opt == '\0')
910 error(arg);
911 ctx->i_oldargc--;
912 } else {
913 opt = arg + 2;
914 }
915 len = strlen(opt) + 7;
916 if ((s = malloc(len)) == NULL)
917 nomem();
918 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
919 newae(ctx->i_ae, s);
920 free(s);
921 }
922 break;
923 case 'O':
924 if (arglen == 1) {
925 newae(ctx->i_ae, "-O");
926 break;
927 }
928 error(arg);
929 break;
930 case 'P':
931 /*
932 * We could do '-E -o filename.i', but that's hard,
933 * and we don't need it for the case that's triggering
934 * this addition. We'll require the user to specify
935 * -o in the Makefile. If they don't they'll find out
936 * in a hurry.
937 */
938 newae(ctx->i_ae, "-E");
939 op = CW_O_PREPROCESS;
940 nolibc = 1;
941 break;
942 case 's':
943 if (arglen == 1) {
944 newae(ctx->i_ae, "-Wl,-s");
945 break;
946 }
947 error(arg);
948 break;
949 case 't':
950 if (arglen == 1) {
951 newae(ctx->i_ae, "-Wl,-t");
952 break;
953 }
954 error(arg);
955 break;
956 case 'V':
957 if (arglen == 1) {
958 ctx->i_flags &= ~CW_F_ECHO;
959 newae(ctx->i_ae, "--version");
960 break;
961 }
962 error(arg);
963 break;
964 case 'v':
965 if (arglen == 1) {
966 warnings(ctx->i_ae);
967 break;
968 }
969 error(arg);
970 break;
971 case 'W':
972 if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
973 /*
974 * gcc's preprocessor will accept c99
975 * regardless, so accept and ignore.
976 */
977 break;
978 }
979 if (strncmp(arg, "-Wa,", 4) == 0 ||
980 strncmp(arg, "-Wp,", 4) == 0 ||
981 strncmp(arg, "-Wl,", 4) == 0) {
982 newae(ctx->i_ae, arg);
983 break;
984 }
985 if (strcmp(arg, "-W0,-noglobal") == 0 ||
986 strcmp(arg, "-W0,-xglobalstatic") == 0) {
987 /*
988 * gcc doesn't prefix local symbols
989 * in debug mode, so this is not needed.
990 */
991 break;
992 }
993 if (strcmp(arg, "-W0,-Lt") == 0) {
994 /*
995 * Generate tests at the top of loops.
996 * There is no direct gcc equivalent, ignore.
997 */
998 break;
999 }
1000 if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
1001 newae(ctx->i_ae,
1002 "-fno-eliminate-unused-debug-symbols");
1003 newae(ctx->i_ae,
1004 "-fno-eliminate-unused-debug-types");
1005 break;
1006 }
1007 if (strcmp(arg, "-W2,-xwrap_int") == 0) {
1008 /*
1009 * Use the legacy behaviour (pre-SS11)
1010 * for integer wrapping.
1011 * gcc does not need this.
1012 */
1013 break;
1014 }
1015 if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
1016 /*
1017 * Prevents optimizing away checks for
1018 * unbound weak symbol addresses. gcc does
1019 * not do this, so it's not needed.
1020 */
1021 break;
1022 }
1023 if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
1024 xlate(ctx->i_ae, arg + 11, xcode_tbl);
1025 break;
1026 }
1027 if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1028 /*
1029 * Prevents insertion of register symbols.
1030 * gcc doesn't do this, so ignore it.
1031 */
1032 break;
1033 }
1034 if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1035 /*
1036 * Prevents optimizing away of static variables.
1037 * gcc does not do this, so it's not needed.
1038 */
1039 break;
1040 }
1041 #if defined(__x86)
1042 if (strcmp(arg, "-Wu,-save_args") == 0) {
1043 newae(ctx->i_ae, "-msave-args");
1044 break;
1045 }
1046 #endif /* __x86 */
1047 error(arg);
1048 break;
1049 case 'X':
1050 if (strcmp(arg, "-Xa") == 0 ||
1051 strcmp(arg, "-Xt") == 0) {
1052 break;
1053 }
1054 if (strcmp(arg, "-Xs") == 0) {
1055 Xsmode(ctx->i_ae);
1056 break;
1057 }
1058 error(arg);
1059 break;
1060 case 'x':
1061 if (arglen == 1)
1062 error(arg);
1063 switch (arg[2]) {
1064 case 'a':
1065 if (strncmp(arg, "-xarch=", 7) == 0) {
1066 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1067 break;
1068 }
1069 error(arg);
1070 break;
1071 case 'b':
1072 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1073 if (strcmp(arg + 10, "%all"))
1074 newae(ctx->i_ae, "-fbuiltin");
1075 break;
1076 }
1077 error(arg);
1078 break;
1079 case 'C':
1080 /* Accept C++ style comments -- ignore */
1081 if (strcmp(arg, "-xCC") == 0)
1082 break;
1083 error(arg);
1084 break;
1085 case 'c':
1086 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1087 newae(ctx->i_ae, "-std=gnu99");
1088 break;
1089 }
1090 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1091 newae(ctx->i_ae, "-std=gnu89");
1092 break;
1093 }
1094 if (strncmp(arg, "-xchip=", 7) == 0) {
1095 xlate(ctx->i_ae, arg + 7, xchip_tbl);
1096 break;
1097 }
1098 if (strncmp(arg, "-xcode=", 7) == 0) {
1099 xlate(ctx->i_ae, arg + 7, xcode_tbl);
1100 break;
1101 }
1102 if (strncmp(arg, "-xcrossfile", 11) == 0)
1103 break;
1104 error(arg);
1105 break;
1106 case 'F':
1107 /*
1108 * Compile for mapfile reordering, or unused
1109 * section elimination, syntax can be -xF or
1110 * more complex, like -xF=%all -- ignore.
1111 */
1112 if (strncmp(arg, "-xF", 3) == 0)
1113 break;
1114 error(arg);
1115 break;
1116 case 'i':
1117 if (strncmp(arg, "-xinline", 8) == 0)
1118 /* No inlining; ignore */
1119 break;
1120 if (strcmp(arg, "-xildon") == 0 ||
1121 strcmp(arg, "-xildoff") == 0)
1122 /* No incremental linking; ignore */
1123 break;
1124 error(arg);
1125 break;
1126 #if defined(__x86)
1127 case 'm':
1128 if (strcmp(arg, "-xmodel=kernel") == 0) {
1129 newae(ctx->i_ae, "-ffreestanding");
1130 newae(ctx->i_ae, "-mno-red-zone");
1131 model = "-mcmodel=kernel";
1132 nolibc = 1;
1133 break;
1134 }
1135 error(arg);
1136 break;
1137 #endif /* __x86 */
1138 case 'O':
1139 if (strncmp(arg, "-xO", 3) == 0) {
1140 size_t len = strlen(arg);
1141 char *s = NULL;
1142 int c = *(arg + 3);
1143 int level;
1144
1145 if (len != 4 || !isdigit(c))
1146 error(arg);
1147
1148 level = atoi(arg + 3);
1149 if (level > 5)
1150 error(arg);
1151 if (level >= 2) {
1152 /*
1153 * For gcc-3.4.x at -O2 we
1154 * need to disable optimizations
1155 * that break ON.
1156 */
1157 optim_disable(ctx->i_ae, level);
1158 /*
1159 * limit -xO3 to -O2 as well.
1160 */
1161 level = 2;
1162 }
1163 if (asprintf(&s, "-O%d", level) == -1)
1164 nomem();
1165 newae(ctx->i_ae, s);
1166 free(s);
1167 break;
1168 }
1169 error(arg);
1170 break;
1171 case 'r':
1172 if (strncmp(arg, "-xregs=", 7) == 0) {
1173 xlate(ctx->i_ae, arg + 7, xregs_tbl);
1174 break;
1175 }
1176 error(arg);
1177 break;
1178 case 's':
1179 if (strcmp(arg, "-xs") == 0 ||
1180 strcmp(arg, "-xspace") == 0 ||
1181 strcmp(arg, "-xstrconst") == 0)
1182 break;
1183 error(arg);
1184 break;
1185 case 't':
1186 if (strncmp(arg, "-xtarget=", 9) == 0) {
1187 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1188 break;
1189 }
1190 error(arg);
1191 break;
1192 case 'e':
1193 case 'h':
1194 case 'l':
1195 default:
1196 error(arg);
1197 break;
1198 }
1199 break;
1200 case 'Y':
1201 if (arglen == 1) {
1202 if ((arg = *++ctx->i_oldargv) == NULL ||
1203 *arg == '\0')
1204 error("-Y");
1205 ctx->i_oldargc--;
1206 arglen = strlen(arg + 1);
1207 } else {
1208 arg += 2;
1209 }
1210 /* Just ignore -YS,... for now */
1211 if (strncmp(arg, "S,", 2) == 0)
1212 break;
1213 if (strncmp(arg, "I,", 2) == 0) {
1214 char *s = strdup(arg);
1215 s[0] = '-';
1216 s[1] = 'I';
1217 newae(ctx->i_ae, "-nostdinc");
1218 newae(ctx->i_ae, s);
1219 free(s);
1220 break;
1221 }
1222 error(arg);
1223 break;
1224 case 'Q':
1225 /*
1226 * We could map -Qy into -Wl,-Qy etc.
1227 */
1228 default:
1229 error(arg);
1230 break;
1231 }
1232 }
1233
1234 free(nameflag);
1235
1236 /*
1237 * When compiling multiple source files in a single invocation some
1238 * compilers output objects into the current directory with
1239 * predictable and conventional names.
1240 *
1241 * We prevent any attempt to compile multiple files at once so that
1242 * any such objects created by a shadow can't escape into a later
1243 * link-edit.
1244 */
1245 if (c_files > 1 && op != CW_O_PREPROCESS) {
1246 errx(2, "multiple source files are "
1247 "allowed only with -E or -P");
1248 }
1249
1250 /*
1251 * Make sure that we do not have any unintended interactions between
1252 * the xarch options passed in and the version of the Studio compiler
1253 * used.
1254 */
1255 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1256 errx(2,
1257 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1258 }
1259
1260 switch (mflag) {
1261 case 0:
1262 /* FALLTHROUGH */
1263 case M32:
1264 #if defined(__sparc)
1265 /*
1266 * Only -m32 is defined and so put in the missing xarch
1267 * translation.
1268 */
1269 newae(ctx->i_ae, "-mcpu=v8");
1270 newae(ctx->i_ae, "-mno-v8plus");
1271 #endif
1272 break;
1273 case M64:
1274 #if defined(__sparc)
1275 /*
1276 * Only -m64 is defined and so put in the missing xarch
1277 * translation.
1278 */
1279 newae(ctx->i_ae, "-mcpu=v9");
1280 #endif
1281 break;
1282 case SS12:
1283 #if defined(__sparc)
1284 /* no -m32/-m64 flag used - this is an error for sparc builds */
1285 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1286 exit(2);
1287 #endif
1288 break;
1289 case SS11:
1290 /* FALLTHROUGH */
1291 case (SS11|M32):
1292 case (SS11|M64):
1293 break;
1294 case (SS12|M32):
1295 #if defined(__sparc)
1296 /*
1297 * Need to add in further 32 bit options because with SS12
1298 * the xarch=sparcvis option can be applied to 32 or 64
1299 * bit, and so the translatation table (xtbl) cannot handle
1300 * that.
1301 */
1302 newae(ctx->i_ae, "-mv8plus");
1303 #endif
1304 break;
1305 case (SS12|M64):
1306 break;
1307 default:
1308 (void) fprintf(stderr,
1309 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1310 exit(2);
1311 }
1312
1313 if (ctx->i_flags & CW_F_SHADOW) {
1314 if (op == CW_O_PREPROCESS)
1315 exit(0);
1316 else if (op == CW_O_LINK && c_files == 0)
1317 exit(0);
1318 }
1319
1320 if (model != NULL)
1321 newae(ctx->i_ae, model);
1322 if (!nolibc)
1323 newae(ctx->i_ae, "-lc");
1324 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1325 newae(ctx->i_ae, "-o");
1326 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1327 }
1328 }
1329
1330 static void
1331 do_smatch(cw_ictx_t *ctx)
1332 {
1333 if (ctx->i_flags & CW_F_PROG) {
1334 newae(ctx->i_ae, "--version");
1335 return;
1336 }
1337
1338 /*
1339 * Some sources shouldn't run smatch at all.
1340 */
1341 for (int i = 0; i < ctx->i_oldargc; i++) {
1342 char *arg = ctx->i_oldargv[i];
1343
1344 if (strcmp(arg, "-_smatch=off") == 0) {
1345 ctx->i_flags &= ~ (CW_F_EXEC | CW_F_ECHO);
1346 return;
1347 }
1348 }
1349
1350 /*
1351 * smatch can handle gcc's options.
1352 */
1353 do_gcc(ctx);
1354 }
1355
1356 static void
1357 do_cc(cw_ictx_t *ctx)
1358 {
1359 int in_output = 0, seen_o = 0, c_files = 0;
1360 cw_op_t op = CW_O_LINK;
1361 char *nameflag;
1362
1363 if (ctx->i_flags & CW_F_PROG) {
1364 newae(ctx->i_ae, "-V");
1365 return;
1366 }
1367
1368 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1369 nomem();
1370
1371 while (--ctx->i_oldargc > 0) {
1372 char *arg = *++ctx->i_oldargv;
1373
1374 if (strncmp(arg, "-_CC=", 5) == 0) {
1375 newae(ctx->i_ae, strchr(arg, '=') + 1);
1376 continue;
1377 }
1378
1379 if (*arg != '-') {
1380 if (!in_output && is_source_file(arg))
1381 c_files++;
1382
1383 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1384 newae(ctx->i_ae, arg);
1385 } else {
1386 in_output = 0;
1387 newae(ctx->i_ae, discard_file_name(ctx, arg));
1388 }
1389 continue;
1390 }
1391 switch (*(arg + 1)) {
1392 case '_':
1393 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1394 (strncmp(arg, "-_cc=", 5) == 0) ||
1395 (strncmp(arg, "-_sun=", 6) == 0)) {
1396 newae(ctx->i_ae, strchr(arg, '=') + 1);
1397 }
1398 break;
1399
1400 case 'V':
1401 ctx->i_flags &= ~CW_F_ECHO;
1402 newae(ctx->i_ae, arg);
1403 break;
1404 case 'o':
1405 seen_o = 1;
1406 if (strlen(arg) == 2) {
1407 in_output = 1;
1408 newae(ctx->i_ae, arg);
1409 } else if (ctx->i_flags & CW_F_SHADOW) {
1410 newae(ctx->i_ae, "-o");
1411 newae(ctx->i_ae, discard_file_name(ctx, arg));
1412 } else {
1413 newae(ctx->i_ae, arg);
1414 }
1415 break;
1416 case 'c':
1417 case 'S':
1418 if (strlen(arg) == 2)
1419 op = CW_O_COMPILE;
1420 newae(ctx->i_ae, arg);
1421 break;
1422 case 'E':
1423 case 'P':
1424 if (strlen(arg) == 2)
1425 op = CW_O_PREPROCESS;
1426 /*FALLTHROUGH*/
1427 default:
1428 newae(ctx->i_ae, arg);
1429 }
1430 }
1431
1432 free(nameflag);
1433
1434 /* See the comment on this same code in do_gcc() */
1435 if (c_files > 1 && op != CW_O_PREPROCESS) {
1436 errx(2, "multiple source files are "
1437 "allowed only with -E or -P");
1438 }
1439
1440 if (ctx->i_flags & CW_F_SHADOW) {
1441 if (op == CW_O_PREPROCESS)
1442 exit(0);
1443 else if (op == CW_O_LINK && c_files == 0)
1444 exit(0);
1445 }
1446
1447 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1448 newae(ctx->i_ae, "-o");
1449 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1450 }
1451 }
1452
1453 static void
1454 prepctx(cw_ictx_t *ctx)
1455 {
1456 newae(ctx->i_ae, ctx->i_compiler->c_path);
1457
1458 if (ctx->i_flags & CW_F_PROG) {
1459 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1460 "shadow" : "primary", ctx->i_compiler->c_path);
1461 (void) fflush(stdout);
1462 }
1463
1464 if (ctx->i_linker != NULL)
1465 setenv("LD_ALTEXEC", ctx->i_linker, 1);
1466
1467 if (!(ctx->i_flags & CW_F_XLATE))
1468 return;
1469
1470 switch (ctx->i_compiler->c_style) {
1471 case SUN:
1472 do_cc(ctx);
1473 break;
1474 case GNU:
1475 do_gcc(ctx);
1476 break;
1477 case SMATCH:
1478 do_smatch(ctx);
1479 break;
1480 }
1481 }
1482
1483 static int
1484 invoke(cw_ictx_t *ctx)
1485 {
1486 char **newargv;
1487 int ac;
1488 struct ae *a;
1489
1490 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1491 NULL)
1492 nomem();
1493
1494 if (ctx->i_flags & CW_F_ECHO)
1495 (void) fprintf(stderr, "+ ");
1496
1497 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1498 newargv[ac] = a->ae_arg;
1499 if (ctx->i_flags & CW_F_ECHO)
1500 (void) fprintf(stderr, "%s ", a->ae_arg);
1501 if (a == ctx->i_ae->ael_tail)
1502 break;
1503 }
1504
1505 if (ctx->i_flags & CW_F_ECHO) {
1506 (void) fprintf(stderr, "\n");
1507 (void) fflush(stderr);
1508 }
1509
1510 if (!(ctx->i_flags & CW_F_EXEC))
1511 return (0);
1512
1513 /*
1514 * We must fix up the environment here so that the dependency files are
1515 * not trampled by the shadow compiler. Also take care of GCC
1516 * environment variables that will throw off gcc. This assumes a primary
1517 * gcc.
1518 */
1519 if ((ctx->i_flags & CW_F_SHADOW) &&
1520 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1521 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1522 unsetenv("GCC_ROOT") != 0)) {
1523 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1524 strerror(errno));
1525 return (-1);
1526 }
1527
1528 (void) execv(newargv[0], newargv);
1529 warn("couldn't run %s", newargv[0]);
1530
1531 return (-1);
1532 }
1533
1534 static int
1535 reap(cw_ictx_t *ctx)
1536 {
1537 int status, ret = 0;
1538 char buf[1024];
1539 struct stat s;
1540
1541 /*
1542 * Only wait for one specific child.
1543 */
1544 if (ctx->i_pid <= 0)
1545 return (-1);
1546
1547 do {
1548 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1549 warn("cannot reap child");
1550 return (-1);
1551 }
1552 if (status != 0) {
1553 if (WIFSIGNALED(status)) {
1554 ret = -WTERMSIG(status);
1555 break;
1556 } else if (WIFEXITED(status)) {
1557 ret = WEXITSTATUS(status);
1558 break;
1559 }
1560 }
1561 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1562
1563 if (stat(ctx->i_stderr, &s) < 0) {
1564 warn("stat failed on child cleanup");
1565 return (-1);
1566 }
1567 if (s.st_size != 0) {
1568 FILE *f;
1569
1570 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1571 while (fgets(buf, sizeof (buf), f))
1572 (void) fprintf(stderr, "%s", buf);
1573 (void) fflush(stderr);
1574 (void) fclose(f);
1575 }
1576 }
1577 (void) unlink(ctx->i_stderr);
1578 free(ctx->i_stderr);
1579
1580 /*
1581 * cc returns an error code when given -V; we want that to succeed.
1582 */
1583 if (ctx->i_flags & CW_F_PROG)
1584 return (0);
1585
1586 return (ret);
1587 }
1588
1589 static int
1590 exec_ctx(cw_ictx_t *ctx, int block)
1591 {
1592 if ((ctx->i_stderr = tempnam(ctx->i_tmpdir, "cw")) == NULL) {
1593 nomem();
1594 return (-1);
1595 }
1596
1597 if ((ctx->i_pid = fork()) == 0) {
1598 int fd;
1599
1600 (void) fclose(stderr);
1601 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1602 0666)) < 0) {
1603 err(1, "open failed for standard error");
1604 }
1605 if (dup2(fd, 2) < 0) {
1606 err(1, "dup2 failed for standard error");
1607 }
1608 if (fd != 2)
1609 (void) close(fd);
1610 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1611 err(1, "freopen failed for /dev/fd/2");
1612 }
1613
1614 prepctx(ctx);
1615 exit(invoke(ctx));
1616 }
1617
1618 if (ctx->i_pid < 0) {
1619 err(1, "fork failed");
1620 }
1621
1622 if (block)
1623 return (reap(ctx));
1624
1625 return (0);
1626 }
1627
1628 static void
1629 parse_compiler(const char *spec, cw_compiler_t *compiler)
1630 {
1631 char *tspec, *token;
1632
1633 if ((tspec = strdup(spec)) == NULL)
1634 nomem();
1635
1636 if ((token = strsep(&tspec, ",")) == NULL)
1637 errx(1, "Compiler is missing a name: %s", spec);
1638 compiler->c_name = token;
1639
1640 if ((token = strsep(&tspec, ",")) == NULL)
1641 errx(1, "Compiler is missing a path: %s", spec);
1642 compiler->c_path = token;
1643
1644 if ((token = strsep(&tspec, ",")) == NULL)
1645 errx(1, "Compiler is missing a style: %s", spec);
1646
1647 if ((strcasecmp(token, "gnu") == 0) ||
1648 (strcasecmp(token, "gcc") == 0)) {
1649 compiler->c_style = GNU;
1650 } else if ((strcasecmp(token, "sun") == 0) ||
1651 (strcasecmp(token, "cc") == 0)) {
1652 compiler->c_style = SUN;
1653 } else if ((strcasecmp(token, "smatch") == 0)) {
1654 compiler->c_style = SMATCH;
1655 } else {
1656 errx(1, "unknown compiler style: %s", token);
1657 }
1658
1659 if (tspec != NULL)
1660 errx(1, "Excess tokens in compiler: %s", spec);
1661 }
1662
1663 static void
1664 cleanup(cw_ictx_t *ctx)
1665 {
1666 DIR *dirp;
1667 struct dirent *dp;
1668 char buf[MAXPATHLEN];
1669
1670 if ((dirp = opendir(ctx->i_tmpdir)) == NULL) {
1671 if (errno != ENOENT) {
1672 err(1, "couldn't open temp directory: %s",
1673 ctx->i_tmpdir);
1674 } else {
1675 return;
1676 }
1677 }
1678
1679 errno = 0;
1680 while ((dp = readdir(dirp)) != NULL) {
1681 (void) snprintf(buf, MAXPATHLEN, "%s/%s", ctx->i_tmpdir,
1682 dp->d_name);
1683
1684 if (strcmp(dp->d_name, ".") == 0 ||
1685 strcmp(dp->d_name, "..") == 0) {
1686 continue;
1687 }
1688
1689 if (unlink(buf) == -1)
1690 err(1, "failed to unlink temp file: %s", dp->d_name);
1691 errno = 0;
1692 }
1693
1694 if (errno != 0) {
1695 err(1, "failed to read temporary directory: %s",
1696 ctx->i_tmpdir);
1697 }
1698
1699 (void) closedir(dirp);
1700 if (rmdir(ctx->i_tmpdir) != 0) {
1701 err(1, "failed to unlink temporary directory: %s",
1702 ctx->i_tmpdir);
1703 }
1704 }
1705
1706 int
1707 main(int argc, char **argv)
1708 {
1709 int ch;
1710 cw_compiler_t primary = { NULL, NULL, 0 };
1711 cw_compiler_t shadows[10];
1712 int nshadows = 0;
1713 int ret = 0;
1714 boolean_t do_serial = B_FALSE;
1715 boolean_t do_exec = B_FALSE;
1716 boolean_t vflg = B_FALSE;
1717 boolean_t Cflg = B_FALSE;
1718 boolean_t cflg = B_FALSE;
1719 boolean_t nflg = B_FALSE;
1720 char *tmpdir;
1721
1722 cw_ictx_t *main_ctx;
1723
1724 static struct option longopts[] = {
1725 { "compiler", no_argument, NULL, 'c' },
1726 { "linker", required_argument, NULL, 'l' },
1727 { "noecho", no_argument, NULL, 'n' },
1728 { "primary", required_argument, NULL, 'p' },
1729 { "shadow", required_argument, NULL, 's' },
1730 { "versions", no_argument, NULL, 'v' },
1731 { NULL, 0, NULL, 0 },
1732 };
1733
1734
1735 if ((main_ctx = newictx()) == NULL)
1736 nomem();
1737
1738 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1739 switch (ch) {
1740 case 'c':
1741 cflg = B_TRUE;
1742 break;
1743 case 'C':
1744 Cflg = B_TRUE;
1745 break;
1746 case 'l':
1747 if ((main_ctx->i_linker = strdup(optarg)) == NULL)
1748 nomem();
1749 break;
1750 case 'n':
1751 nflg = B_TRUE;
1752 break;
1753 case 'p':
1754 if (primary.c_path != NULL) {
1755 warnx("Only one primary compiler may "
1756 "be specified");
1757 usage();
1758 }
1759
1760 parse_compiler(optarg, &primary);
1761 break;
1762 case 's':
1763 if (nshadows >= 10)
1764 errx(1, "May only use 10 shadows at "
1765 "the moment");
1766 parse_compiler(optarg, &shadows[nshadows]);
1767 nshadows++;
1768 break;
1769 case 'v':
1770 vflg = B_TRUE;
1771 break;
1772 default:
1773 (void) fprintf(stderr, "Did you forget '--'?\n");
1774 usage();
1775 }
1776 }
1777
1778 if (primary.c_path == NULL) {
1779 warnx("A primary compiler must be specified");
1780 usage();
1781 }
1782
1783 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1784 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1785
1786 /* Leave room for argv[0] */
1787 argc -= (optind - 1);
1788 argv += (optind - 1);
1789
1790 main_ctx->i_oldargc = argc;
1791 main_ctx->i_oldargv = argv;
1792 main_ctx->i_flags = CW_F_XLATE;
1793 if (nflg == 0)
1794 main_ctx->i_flags |= CW_F_ECHO;
1795 if (do_exec)
1796 main_ctx->i_flags |= CW_F_EXEC;
1797 if (Cflg)
1798 main_ctx->i_flags |= CW_F_CXX;
1799 main_ctx->i_compiler = &primary;
1800
1801 if (cflg) {
1802 (void) fputs(primary.c_path, stdout);
1803 }
1804
1805 if (vflg) {
1806 (void) printf("cw version %s\n", CW_VERSION);
1807 (void) fflush(stdout);
1808 main_ctx->i_flags &= ~CW_F_ECHO;
1809 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1810 do_serial = 1;
1811 }
1812
1813 tmpdir = getenv("TMPDIR");
1814 if (tmpdir == NULL)
1815 tmpdir = "/tmp";
1816
1817 if (asprintf(&main_ctx->i_tmpdir, "%s/cw.XXXXXX", tmpdir) == -1)
1818 nomem();
1819
1820 if ((main_ctx->i_tmpdir = mkdtemp(main_ctx->i_tmpdir)) == NULL)
1821 errx(1, "failed to create temporary directory");
1822
1823 ret |= exec_ctx(main_ctx, do_serial);
1824
1825 for (int i = 0; i < nshadows; i++) {
1826 int r;
1827 cw_ictx_t *shadow_ctx;
1828
1829 if ((shadow_ctx = newictx()) == NULL)
1830 nomem();
1831
1832 (void) memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1833
1834 shadow_ctx->i_flags |= CW_F_SHADOW;
1835 shadow_ctx->i_compiler = &shadows[i];
1836
1837 r = exec_ctx(shadow_ctx, do_serial);
1838 if (r == 0) {
1839 shadow_ctx->i_next = main_ctx->i_next;
1840 main_ctx->i_next = shadow_ctx;
1841 }
1842 ret |= r;
1843 }
1844
1845 if (!do_serial) {
1846 cw_ictx_t *next = main_ctx;
1847 while (next != NULL) {
1848 cw_ictx_t *toreap = next;
1849 next = next->i_next;
1850 ret |= reap(toreap);
1851 }
1852 }
1853
1854 cleanup(main_ctx);
1855 return (ret);
1856 }