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 "3.0"
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 * -xdebugformat=<format> ignore (always use dwarf-2 for gcc)
221 * -xcrossfile[=<n>] ignore
222 * -xe error
223 * -xF error
224 * -xhelp=<f> error
225 * -xildoff ignore
226 * -xildon ignore
227 * -xinline ignore
228 * -xlibmieee error
229 * -xlibmil error
230 * -xlic_lib=sunperf error
231 * -xmaxopt=[...] error
232 * -xO<n> -O<n>
233 * -xP error
234 * -xprofile=<p> error
235 * -xregs=<r> table
236 * -xs error
237 * -xsb error
238 * -xsbfast error
239 * -xsfpconst error
240 * -xspace ignore (-not -Os)
241 * -xstrconst ignore
242 * -xtarget=<t> table
243 * -xtemp=<dir> error
244 * -xtime error
245 * -xtransition -Wtransition
246 * -xunroll=n error
247 * -W0,-xdbggen=no%usedonly -fno-eliminate-unused-debug-symbols
248 * -fno-eliminate-unused-debug-types
249 * -Y<c>,<dir> error
250 * -YA,<dir> error
251 * -YI,<dir> -nostdinc -I<dir>
252 * -YP,<dir> error
253 * -YS,<dir> error
254 */
255
256 #include <ctype.h>
257 #include <err.h>
258 #include <errno.h>
259 #include <fcntl.h>
260 #include <getopt.h>
261 #include <stdio.h>
262 #include <stdlib.h>
263 #include <string.h>
264 #include <unistd.h>
265 #include <dirent.h>
266
267 #include <sys/param.h>
268 #include <sys/stat.h>
269 #include <sys/types.h>
270 #include <sys/utsname.h>
271 #include <sys/wait.h>
272
273 #define CW_F_CXX 0x01
274 #define CW_F_SHADOW 0x02
275 #define CW_F_EXEC 0x04
276 #define CW_F_ECHO 0x08
277 #define CW_F_XLATE 0x10
278 #define CW_F_PROG 0x20
279
280 typedef enum cw_op {
281 CW_O_NONE = 0,
282 CW_O_PREPROCESS,
283 CW_O_COMPILE,
284 CW_O_LINK
285 } cw_op_t;
286
287 struct aelist {
288 struct ae {
289 struct ae *ae_next;
290 char *ae_arg;
291 } *ael_head, *ael_tail;
292 int ael_argc;
293 };
294
295 typedef enum {
296 GNU,
297 SUN,
298 SMATCH
299 } compiler_style_t;
300
301 typedef struct {
302 char *c_name;
303 char *c_path;
304 compiler_style_t c_style;
305 } cw_compiler_t;
306
307 typedef struct cw_ictx {
308 struct cw_ictx *i_next;
309 cw_compiler_t *i_compiler;
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 void
598 do_gcc(cw_ictx_t *ctx)
599 {
600 int c;
601 int nolibc = 0;
602 int in_output = 0, seen_o = 0, c_files = 0;
603 cw_op_t op = CW_O_LINK;
604 char *model = NULL;
605 char *nameflag;
606 int mflag = 0;
607
608 if (ctx->i_flags & CW_F_PROG) {
609 newae(ctx->i_ae, "--version");
610 return;
611 }
612
613 newae(ctx->i_ae, "-fident");
614 newae(ctx->i_ae, "-finline");
615 newae(ctx->i_ae, "-fno-inline-functions");
616 newae(ctx->i_ae, "-fno-builtin");
617 newae(ctx->i_ae, "-fno-asm");
618 newae(ctx->i_ae, "-fdiagnostics-show-option");
619 newae(ctx->i_ae, "-nodefaultlibs");
620
621 #if defined(__sparc)
622 /*
623 * The SPARC ldd and std instructions require 8-byte alignment of
624 * their address operand. gcc correctly uses them only when the
625 * ABI requires 8-byte alignment; unfortunately we have a number of
626 * pieces of buggy code that doesn't conform to the ABI. This
627 * flag makes gcc work more like Studio with -xmemalign=4.
628 */
629 newae(ctx->i_ae, "-mno-integer-ldd-std");
630 #endif
631
632 /*
633 * This is needed because 'u' is defined
634 * under a conditional on 'sun'. Should
635 * probably just remove the conditional,
636 * or make it be dependent on '__sun'.
637 *
638 * -Dunix is also missing in enhanced ANSI mode
639 */
640 newae(ctx->i_ae, "-D__sun");
641
642 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
643 nomem();
644
645 /*
646 * Walk the argument list, translating as we go ..
647 */
648 while (--ctx->i_oldargc > 0) {
649 char *arg = *++ctx->i_oldargv;
650 size_t arglen = strlen(arg);
651
652 if (*arg == '-') {
653 arglen--;
654 } else {
655 /*
656 * Discard inline files that gcc doesn't grok
657 */
658 if (!in_output && arglen > 3 &&
659 strcmp(arg + arglen - 3, ".il") == 0)
660 continue;
661
662 if (!in_output && arglen > 2 &&
663 arg[arglen - 2] == '.' &&
664 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
665 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
666 c_files++;
667
668 /*
669 * Otherwise, filenames and partial arguments
670 * are passed through for gcc to chew on. However,
671 * output is always discarded for the secondary
672 * compiler.
673 */
674 if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
675 newae(ctx->i_ae, discard_file_name(ctx, arg));
676 } else {
677 newae(ctx->i_ae, arg);
678 }
679 in_output = 0;
680 continue;
681 }
682
683 if (ctx->i_flags & CW_F_CXX) {
684 if (strncmp(arg, "-_g++=", 6) == 0) {
685 newae(ctx->i_ae, strchr(arg, '=') + 1);
686 continue;
687 }
688 if (strncmp(arg, "-compat=", 8) == 0) {
689 /* discard -compat=4 and -compat=5 */
690 continue;
691 }
692 if (strcmp(arg, "-Qoption") == 0) {
693 /* discard -Qoption and its two arguments */
694 if (ctx->i_oldargc < 3)
695 error(arg);
696 ctx->i_oldargc -= 2;
697 ctx->i_oldargv += 2;
698 continue;
699 }
700 if (strcmp(arg, "-xwe") == 0) {
701 /* turn warnings into errors */
702 newae(ctx->i_ae, "-Werror");
703 continue;
704 }
705 if (strcmp(arg, "-norunpath") == 0) {
706 /* gcc has no corresponding option */
707 continue;
708 }
709 if (strcmp(arg, "-nolib") == 0) {
710 /* -nodefaultlibs is on by default */
711 nolibc = 1;
712 continue;
713 }
714 #if defined(__sparc)
715 if (strcmp(arg, "-cg92") == 0) {
716 mflag |= xlate_xtb(ctx->i_ae, "v8");
717 xlate(ctx->i_ae, "super", xchip_tbl);
718 continue;
719 }
720 #endif /* __sparc */
721 }
722
723 switch ((c = arg[1])) {
724 case '_':
725 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
726 (strncmp(arg, "-_gcc=", 6) == 0) ||
727 (strncmp(arg, "-_gnu=", 6) == 0)) {
728 newae(ctx->i_ae, strchr(arg, '=') + 1);
729 }
730 break;
731 case '#':
732 if (arglen == 1) {
733 newae(ctx->i_ae, "-v");
734 break;
735 }
736 error(arg);
737 break;
738 case 'f':
739 if ((strcmp(arg, "-fpic") == 0) ||
740 (strcmp(arg, "-fPIC") == 0)) {
741 newae(ctx->i_ae, arg);
742 break;
743 }
744 error(arg);
745 break;
746 case 'g':
747 newae(ctx->i_ae, "-gdwarf-2");
748 break;
749 case 'E':
750 if (arglen == 1) {
751 newae(ctx->i_ae, "-xc");
752 newae(ctx->i_ae, arg);
753 op = CW_O_PREPROCESS;
754 nolibc = 1;
755 break;
756 }
757 error(arg);
758 break;
759 case 'c':
760 case 'S':
761 if (arglen == 1) {
762 op = CW_O_COMPILE;
763 nolibc = 1;
764 }
765 /* FALLTHROUGH */
766 case 'C':
767 case 'H':
768 case 'p':
769 if (arglen == 1) {
770 newae(ctx->i_ae, arg);
771 break;
772 }
773 error(arg);
774 break;
775 case 'A':
776 case 'h':
777 case 'I':
778 case 'i':
779 case 'L':
780 case 'l':
781 case 'R':
782 case 'U':
783 case 'u':
784 case 'w':
785 newae(ctx->i_ae, arg);
786 break;
787 case 'o':
788 seen_o = 1;
789 if (arglen == 1) {
790 in_output = 1;
791 newae(ctx->i_ae, arg);
792 } else if (ctx->i_flags & CW_F_SHADOW) {
793 newae(ctx->i_ae, "-o");
794 newae(ctx->i_ae, discard_file_name(ctx, arg));
795 } else {
796 newae(ctx->i_ae, arg);
797 }
798 break;
799 case 'D':
800 newae(ctx->i_ae, arg);
801 /*
802 * XXX Clearly a hack ... do we need _KADB too?
803 */
804 if (strcmp(arg, "-D_KERNEL") == 0 ||
805 strcmp(arg, "-D_BOOT") == 0)
806 newae(ctx->i_ae, "-ffreestanding");
807 break;
808 case 'd':
809 if (arglen == 2) {
810 if (strcmp(arg, "-dy") == 0) {
811 newae(ctx->i_ae, "-Wl,-dy");
812 break;
813 }
814 if (strcmp(arg, "-dn") == 0) {
815 newae(ctx->i_ae, "-Wl,-dn");
816 break;
817 }
818 }
819 if (strcmp(arg, "-dalign") == 0) {
820 /*
821 * -dalign forces alignment in some cases;
822 * gcc does not need any flag to do this.
823 */
824 break;
825 }
826 error(arg);
827 break;
828 case 'e':
829 if (strcmp(arg,
830 "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
831 /*
832 * Accept but ignore this -- gcc doesn't
833 * seem to complain about empty translation
834 * units
835 */
836 break;
837 }
838 /* XX64 -- ignore all -erroff= options, for now */
839 if (strncmp(arg, "-erroff=", 8) == 0)
840 break;
841 if (strcmp(arg, "-errtags=yes") == 0) {
842 warnings(ctx->i_ae);
843 break;
844 }
845 if (strcmp(arg, "-errwarn=%all") == 0) {
846 newae(ctx->i_ae, "-Werror");
847 break;
848 }
849 error(arg);
850 break;
851 case 'G':
852 newae(ctx->i_ae, "-shared");
853 nolibc = 1;
854 break;
855 case 'k':
856 if (strcmp(arg, "-keeptmp") == 0) {
857 newae(ctx->i_ae, "-save-temps");
858 break;
859 }
860 error(arg);
861 break;
862 case 'm':
863 if (strcmp(arg, "-mt") == 0) {
864 newae(ctx->i_ae, "-D_REENTRANT");
865 break;
866 }
867 if (strcmp(arg, "-m64") == 0) {
868 newae(ctx->i_ae, "-m64");
869 #if defined(__x86)
870 newae(ctx->i_ae, "-mtune=opteron");
871 #endif
872 mflag |= M64;
873 break;
874 }
875 if (strcmp(arg, "-m32") == 0) {
876 newae(ctx->i_ae, "-m32");
877 mflag |= M32;
878 break;
879 }
880 error(arg);
881 break;
882 case 'B': /* linker options */
883 case 'M':
884 case 'z':
885 {
886 char *opt;
887 size_t len;
888 char *s;
889
890 if (arglen == 1) {
891 opt = *++ctx->i_oldargv;
892 if (opt == NULL || *opt == '\0')
893 error(arg);
894 ctx->i_oldargc--;
895 } else {
896 opt = arg + 2;
897 }
898 len = strlen(opt) + 7;
899 if ((s = malloc(len)) == NULL)
900 nomem();
901 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
902 newae(ctx->i_ae, s);
903 free(s);
904 }
905 break;
906 case 'O':
907 if (arglen == 1) {
908 newae(ctx->i_ae, "-O");
909 break;
910 }
911 error(arg);
912 break;
913 case 'P':
914 /*
915 * We could do '-E -o filename.i', but that's hard,
916 * and we don't need it for the case that's triggering
917 * this addition. We'll require the user to specify
918 * -o in the Makefile. If they don't they'll find out
919 * in a hurry.
920 */
921 newae(ctx->i_ae, "-E");
922 op = CW_O_PREPROCESS;
923 nolibc = 1;
924 break;
925 case 's':
926 if (arglen == 1) {
927 newae(ctx->i_ae, "-Wl,-s");
928 break;
929 }
930 error(arg);
931 break;
932 case 't':
933 if (arglen == 1) {
934 newae(ctx->i_ae, "-Wl,-t");
935 break;
936 }
937 error(arg);
938 break;
939 case 'V':
940 if (arglen == 1) {
941 ctx->i_flags &= ~CW_F_ECHO;
942 newae(ctx->i_ae, "--version");
943 break;
944 }
945 error(arg);
946 break;
947 case 'v':
948 if (arglen == 1) {
949 warnings(ctx->i_ae);
950 break;
951 }
952 error(arg);
953 break;
954 case 'W':
955 if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
956 /*
957 * gcc's preprocessor will accept c99
958 * regardless, so accept and ignore.
959 */
960 break;
961 }
962 if (strncmp(arg, "-Wa,", 4) == 0 ||
963 strncmp(arg, "-Wp,", 4) == 0 ||
964 strncmp(arg, "-Wl,", 4) == 0) {
965 newae(ctx->i_ae, arg);
966 break;
967 }
968 if (strcmp(arg, "-W0,-noglobal") == 0 ||
969 strcmp(arg, "-W0,-xglobalstatic") == 0) {
970 /*
971 * gcc doesn't prefix local symbols
972 * in debug mode, so this is not needed.
973 */
974 break;
975 }
976 if (strcmp(arg, "-W0,-Lt") == 0) {
977 /*
978 * Generate tests at the top of loops.
979 * There is no direct gcc equivalent, ignore.
980 */
981 break;
982 }
983 if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
984 newae(ctx->i_ae,
985 "-fno-eliminate-unused-debug-symbols");
986 newae(ctx->i_ae,
987 "-fno-eliminate-unused-debug-types");
988 break;
989 }
990 if (strcmp(arg, "-W2,-xwrap_int") == 0) {
991 /*
992 * Use the legacy behaviour (pre-SS11)
993 * for integer wrapping.
994 * gcc does not need this.
995 */
996 break;
997 }
998 if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
999 /*
1000 * Prevents optimizing away checks for
1001 * unbound weak symbol addresses. gcc does
1002 * not do this, so it's not needed.
1003 */
1004 break;
1005 }
1006 if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
1007 xlate(ctx->i_ae, arg + 11, xcode_tbl);
1008 break;
1009 }
1010 if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1011 /*
1012 * Prevents insertion of register symbols.
1013 * gcc doesn't do this, so ignore it.
1014 */
1015 break;
1016 }
1017 if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1018 /*
1019 * Prevents optimizing away of static variables.
1020 * gcc does not do this, so it's not needed.
1021 */
1022 break;
1023 }
1024 #if defined(__x86)
1025 if (strcmp(arg, "-Wu,-save_args") == 0) {
1026 newae(ctx->i_ae, "-msave-args");
1027 break;
1028 }
1029 #endif /* __x86 */
1030 error(arg);
1031 break;
1032 case 'X':
1033 if (strcmp(arg, "-Xa") == 0 ||
1034 strcmp(arg, "-Xt") == 0) {
1035 break;
1036 }
1037 if (strcmp(arg, "-Xs") == 0) {
1038 Xsmode(ctx->i_ae);
1039 break;
1040 }
1041 error(arg);
1042 break;
1043 case 'x':
1044 if (arglen == 1)
1045 error(arg);
1046 switch (arg[2]) {
1047 case 'a':
1048 if (strncmp(arg, "-xarch=", 7) == 0) {
1049 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1050 break;
1051 }
1052 error(arg);
1053 break;
1054 case 'b':
1055 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1056 if (strcmp(arg + 10, "%all"))
1057 newae(ctx->i_ae, "-fbuiltin");
1058 break;
1059 }
1060 error(arg);
1061 break;
1062 case 'C':
1063 /* Accept C++ style comments -- ignore */
1064 if (strcmp(arg, "-xCC") == 0)
1065 break;
1066 error(arg);
1067 break;
1068 case 'c':
1069 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1070 newae(ctx->i_ae, "-std=gnu99");
1071 break;
1072 }
1073 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1074 newae(ctx->i_ae, "-std=gnu89");
1075 break;
1076 }
1077 if (strncmp(arg, "-xchip=", 7) == 0) {
1078 xlate(ctx->i_ae, arg + 7, xchip_tbl);
1079 break;
1080 }
1081 if (strncmp(arg, "-xcode=", 7) == 0) {
1082 xlate(ctx->i_ae, arg + 7, xcode_tbl);
1083 break;
1084 }
1085 if (strncmp(arg, "-xcrossfile", 11) == 0)
1086 break;
1087 error(arg);
1088 break;
1089 case 'd':
1090 if (strncmp(arg, "-xdebugformat=", 14) == 0)
1091 break;
1092 error(arg);
1093 break;
1094 case 'F':
1095 /*
1096 * Compile for mapfile reordering, or unused
1097 * section elimination, syntax can be -xF or
1098 * more complex, like -xF=%all -- ignore.
1099 */
1100 if (strncmp(arg, "-xF", 3) == 0)
1101 break;
1102 error(arg);
1103 break;
1104 case 'i':
1105 if (strncmp(arg, "-xinline", 8) == 0)
1106 /* No inlining; ignore */
1107 break;
1108 if (strcmp(arg, "-xildon") == 0 ||
1109 strcmp(arg, "-xildoff") == 0)
1110 /* No incremental linking; ignore */
1111 break;
1112 error(arg);
1113 break;
1114 #if defined(__x86)
1115 case 'm':
1116 if (strcmp(arg, "-xmodel=kernel") == 0) {
1117 newae(ctx->i_ae, "-ffreestanding");
1118 newae(ctx->i_ae, "-mno-red-zone");
1119 model = "-mcmodel=kernel";
1120 nolibc = 1;
1121 break;
1122 }
1123 error(arg);
1124 break;
1125 #endif /* __x86 */
1126 case 'O':
1127 if (strncmp(arg, "-xO", 3) == 0) {
1128 size_t len = strlen(arg);
1129 char *s = NULL;
1130 int c = *(arg + 3);
1131 int level;
1132
1133 if (len != 4 || !isdigit(c))
1134 error(arg);
1135
1136 level = atoi(arg + 3);
1137 if (level > 5)
1138 error(arg);
1139 if (level >= 2) {
1140 /*
1141 * For gcc-3.4.x at -O2 we
1142 * need to disable optimizations
1143 * that break ON.
1144 */
1145 optim_disable(ctx->i_ae, level);
1146 /*
1147 * limit -xO3 to -O2 as well.
1148 */
1149 level = 2;
1150 }
1151 if (asprintf(&s, "-O%d", level) == -1)
1152 nomem();
1153 newae(ctx->i_ae, s);
1154 free(s);
1155 break;
1156 }
1157 error(arg);
1158 break;
1159 case 'r':
1160 if (strncmp(arg, "-xregs=", 7) == 0) {
1161 xlate(ctx->i_ae, arg + 7, xregs_tbl);
1162 break;
1163 }
1164 error(arg);
1165 break;
1166 case 's':
1167 if (strcmp(arg, "-xs") == 0 ||
1168 strcmp(arg, "-xspace") == 0 ||
1169 strcmp(arg, "-xstrconst") == 0)
1170 break;
1171 error(arg);
1172 break;
1173 case 't':
1174 if (strncmp(arg, "-xtarget=", 9) == 0) {
1175 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1176 break;
1177 }
1178 error(arg);
1179 break;
1180 case 'e':
1181 case 'h':
1182 case 'l':
1183 default:
1184 error(arg);
1185 break;
1186 }
1187 break;
1188 case 'Y':
1189 if (arglen == 1) {
1190 if ((arg = *++ctx->i_oldargv) == NULL ||
1191 *arg == '\0')
1192 error("-Y");
1193 ctx->i_oldargc--;
1194 arglen = strlen(arg + 1);
1195 } else {
1196 arg += 2;
1197 }
1198 /* Just ignore -YS,... for now */
1199 if (strncmp(arg, "S,", 2) == 0)
1200 break;
1201 if (strncmp(arg, "l,", 2) == 0) {
1202 char *s = strdup(arg);
1203 s[0] = '-';
1204 s[1] = 'B';
1205 newae(ctx->i_ae, s);
1206 free(s);
1207 break;
1208 }
1209 if (strncmp(arg, "I,", 2) == 0) {
1210 char *s = strdup(arg);
1211 s[0] = '-';
1212 s[1] = 'I';
1213 newae(ctx->i_ae, "-nostdinc");
1214 newae(ctx->i_ae, s);
1215 free(s);
1216 break;
1217 }
1218 error(arg);
1219 break;
1220 case 'Q':
1221 /*
1222 * We could map -Qy into -Wl,-Qy etc.
1223 */
1224 default:
1225 error(arg);
1226 break;
1227 }
1228 }
1229
1230 free(nameflag);
1231
1232 /*
1233 * When compiling multiple source files in a single invocation some
1234 * compilers output objects into the current directory with
1235 * predictable and conventional names.
1236 *
1237 * We prevent any attempt to compile multiple files at once so that
1238 * any such objects created by a shadow can't escape into a later
1239 * link-edit.
1240 */
1241 if (c_files > 1 && op != CW_O_PREPROCESS) {
1242 errx(2, "multiple source files are "
1243 "allowed only with -E or -P");
1244 }
1245
1246 /*
1247 * Make sure that we do not have any unintended interactions between
1248 * the xarch options passed in and the version of the Studio compiler
1249 * used.
1250 */
1251 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1252 errx(2,
1253 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1254 }
1255
1256 switch (mflag) {
1257 case 0:
1258 /* FALLTHROUGH */
1259 case M32:
1260 #if defined(__sparc)
1261 /*
1262 * Only -m32 is defined and so put in the missing xarch
1263 * translation.
1264 */
1265 newae(ctx->i_ae, "-mcpu=v8");
1266 newae(ctx->i_ae, "-mno-v8plus");
1267 #endif
1268 break;
1269 case M64:
1270 #if defined(__sparc)
1271 /*
1272 * Only -m64 is defined and so put in the missing xarch
1273 * translation.
1274 */
1275 newae(ctx->i_ae, "-mcpu=v9");
1276 #endif
1277 break;
1278 case SS12:
1279 #if defined(__sparc)
1280 /* no -m32/-m64 flag used - this is an error for sparc builds */
1281 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1282 exit(2);
1283 #endif
1284 break;
1285 case SS11:
1286 /* FALLTHROUGH */
1287 case (SS11|M32):
1288 case (SS11|M64):
1289 break;
1290 case (SS12|M32):
1291 #if defined(__sparc)
1292 /*
1293 * Need to add in further 32 bit options because with SS12
1294 * the xarch=sparcvis option can be applied to 32 or 64
1295 * bit, and so the translatation table (xtbl) cannot handle
1296 * that.
1297 */
1298 newae(ctx->i_ae, "-mv8plus");
1299 #endif
1300 break;
1301 case (SS12|M64):
1302 break;
1303 default:
1304 (void) fprintf(stderr,
1305 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1306 exit(2);
1307 }
1308
1309 if (ctx->i_flags & CW_F_SHADOW) {
1310 if (op == CW_O_PREPROCESS)
1311 exit(0);
1312 else if (op == CW_O_LINK && c_files == 0)
1313 exit(0);
1314 }
1315
1316 if (model != NULL)
1317 newae(ctx->i_ae, model);
1318 if (!nolibc)
1319 newae(ctx->i_ae, "-lc");
1320 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1321 newae(ctx->i_ae, "-o");
1322 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1323 }
1324 }
1325
1326 static void
1327 do_smatch(cw_ictx_t *ctx)
1328 {
1329 if (ctx->i_flags & CW_F_PROG) {
1330 newae(ctx->i_ae, "--version");
1331 return;
1332 }
1333
1334 /*
1335 * Some sources shouldn't run smatch at all.
1336 */
1337 for (int i = 0; i < ctx->i_oldargc; i++) {
1338 char *arg = ctx->i_oldargv[i];
1339
1340 if (strcmp(arg, "-_smatch=off") == 0) {
1341 ctx->i_flags &= ~ (CW_F_EXEC | CW_F_ECHO);
1342 return;
1343 }
1344 }
1345
1346 /*
1347 * smatch can handle gcc's options.
1348 */
1349 do_gcc(ctx);
1350 }
1351
1352 static void
1353 do_cc(cw_ictx_t *ctx)
1354 {
1355 int in_output = 0, seen_o = 0, c_files = 0;
1356 cw_op_t op = CW_O_LINK;
1357 char *nameflag;
1358
1359 if (ctx->i_flags & CW_F_PROG) {
1360 newae(ctx->i_ae, "-V");
1361 return;
1362 }
1363
1364 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1365 nomem();
1366
1367 while (--ctx->i_oldargc > 0) {
1368 char *arg = *++ctx->i_oldargv;
1369 size_t arglen = strlen(arg);
1370
1371 if (strncmp(arg, "-_CC=", 5) == 0) {
1372 newae(ctx->i_ae, strchr(arg, '=') + 1);
1373 continue;
1374 }
1375
1376 if (*arg != '-') {
1377 if (!in_output && arglen > 2 &&
1378 arg[arglen - 2] == '.' &&
1379 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
1380 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
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_flags & CW_F_XLATE))
1465 return;
1466
1467 switch (ctx->i_compiler->c_style) {
1468 case SUN:
1469 do_cc(ctx);
1470 break;
1471 case GNU:
1472 do_gcc(ctx);
1473 break;
1474 case SMATCH:
1475 do_smatch(ctx);
1476 break;
1477 }
1478 }
1479
1480 static int
1481 invoke(cw_ictx_t *ctx)
1482 {
1483 char **newargv;
1484 int ac;
1485 struct ae *a;
1486
1487 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1488 NULL)
1489 nomem();
1490
1491 if (ctx->i_flags & CW_F_ECHO)
1492 (void) fprintf(stderr, "+ ");
1493
1494 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1495 newargv[ac] = a->ae_arg;
1496 if (ctx->i_flags & CW_F_ECHO)
1497 (void) fprintf(stderr, "%s ", a->ae_arg);
1498 if (a == ctx->i_ae->ael_tail)
1499 break;
1500 }
1501
1502 if (ctx->i_flags & CW_F_ECHO) {
1503 (void) fprintf(stderr, "\n");
1504 (void) fflush(stderr);
1505 }
1506
1507 if (!(ctx->i_flags & CW_F_EXEC))
1508 return (0);
1509
1510 /*
1511 * We must fix up the environment here so that the dependency files are
1512 * not trampled by the shadow compiler. Also take care of GCC
1513 * environment variables that will throw off gcc. This assumes a primary
1514 * gcc.
1515 */
1516 if ((ctx->i_flags & CW_F_SHADOW) &&
1517 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1518 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1519 unsetenv("GCC_ROOT") != 0)) {
1520 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1521 strerror(errno));
1522 return (-1);
1523 }
1524
1525 (void) execv(newargv[0], newargv);
1526 warn("couldn't run %s", newargv[0]);
1527
1528 return (-1);
1529 }
1530
1531 static int
1532 reap(cw_ictx_t *ctx)
1533 {
1534 int status, ret = 0;
1535 char buf[1024];
1536 struct stat s;
1537
1538 /*
1539 * Only wait for one specific child.
1540 */
1541 if (ctx->i_pid <= 0)
1542 return (-1);
1543
1544 do {
1545 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1546 warn("cannot reap child");
1547 return (-1);
1548 }
1549 if (status != 0) {
1550 if (WIFSIGNALED(status)) {
1551 ret = -WTERMSIG(status);
1552 break;
1553 } else if (WIFEXITED(status)) {
1554 ret = WEXITSTATUS(status);
1555 break;
1556 }
1557 }
1558 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1559
1560 if (stat(ctx->i_stderr, &s) < 0) {
1561 warn("stat failed on child cleanup");
1562 return (-1);
1563 }
1564 if (s.st_size != 0) {
1565 FILE *f;
1566
1567 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1568 while (fgets(buf, sizeof (buf), f))
1569 (void) fprintf(stderr, "%s", buf);
1570 (void) fflush(stderr);
1571 (void) fclose(f);
1572 }
1573 }
1574 (void) unlink(ctx->i_stderr);
1575 free(ctx->i_stderr);
1576
1577 /*
1578 * cc returns an error code when given -V; we want that to succeed.
1579 */
1580 if (ctx->i_flags & CW_F_PROG)
1581 return (0);
1582
1583 return (ret);
1584 }
1585
1586 static int
1587 exec_ctx(cw_ictx_t *ctx, int block)
1588 {
1589 if ((ctx->i_stderr = tempnam(ctx->i_tmpdir, "cw")) == NULL) {
1590 nomem();
1591 return (-1);
1592 }
1593
1594 if ((ctx->i_pid = fork()) == 0) {
1595 int fd;
1596
1597 (void) fclose(stderr);
1598 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1599 0666)) < 0) {
1600 err(1, "open failed for standard error");
1601 }
1602 if (dup2(fd, 2) < 0) {
1603 err(1, "dup2 failed for standard error");
1604 }
1605 if (fd != 2)
1606 (void) close(fd);
1607 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1608 err(1, "freopen failed for /dev/fd/2");
1609 }
1610
1611 prepctx(ctx);
1612 exit(invoke(ctx));
1613 }
1614
1615 if (ctx->i_pid < 0) {
1616 err(1, "fork failed");
1617 }
1618
1619 if (block)
1620 return (reap(ctx));
1621
1622 return (0);
1623 }
1624
1625 static void
1626 parse_compiler(const char *spec, cw_compiler_t *compiler)
1627 {
1628 char *tspec, *token;
1629
1630 if ((tspec = strdup(spec)) == NULL)
1631 nomem();
1632
1633 if ((token = strsep(&tspec, ",")) == NULL)
1634 errx(1, "Compiler is missing a name: %s", spec);
1635 compiler->c_name = token;
1636
1637 if ((token = strsep(&tspec, ",")) == NULL)
1638 errx(1, "Compiler is missing a path: %s", spec);
1639 compiler->c_path = token;
1640
1641 if ((token = strsep(&tspec, ",")) == NULL)
1642 errx(1, "Compiler is missing a style: %s", spec);
1643
1644 if ((strcasecmp(token, "gnu") == 0) ||
1645 (strcasecmp(token, "gcc") == 0)) {
1646 compiler->c_style = GNU;
1647 } else if ((strcasecmp(token, "sun") == 0) ||
1648 (strcasecmp(token, "cc") == 0)) {
1649 compiler->c_style = SUN;
1650 } else if ((strcasecmp(token, "smatch") == 0)) {
1651 compiler->c_style = SMATCH;
1652 } else {
1653 errx(1, "unknown compiler style: %s", token);
1654 }
1655
1656 if (tspec != NULL)
1657 errx(1, "Excess tokens in compiler: %s", spec);
1658 }
1659
1660 static void
1661 cleanup(cw_ictx_t *ctx)
1662 {
1663 DIR *dirp;
1664 struct dirent *dp;
1665 char buf[MAXPATHLEN];
1666
1667 if ((dirp = opendir(ctx->i_tmpdir)) == NULL) {
1668 if (errno != ENOENT) {
1669 err(1, "couldn't open temp directory: %s",
1670 ctx->i_tmpdir);
1671 } else {
1672 return;
1673 }
1674 }
1675
1676 errno = 0;
1677 while ((dp = readdir(dirp)) != NULL) {
1678 (void) snprintf(buf, MAXPATHLEN, "%s/%s", ctx->i_tmpdir,
1679 dp->d_name);
1680
1681 if (strncmp(dp->d_name, ".", strlen(dp->d_name)) == 0 ||
1682 strncmp(dp->d_name, "..", strlen(dp->d_name)) == 0)
1683 continue;
1684
1685 if (unlink(buf) == -1)
1686 err(1, "failed to unlink temp file: %s", dp->d_name);
1687 errno = 0;
1688 }
1689
1690 if (errno != 0) {
1691 err(1, "failed to read temporary directory: %s",
1692 ctx->i_tmpdir);
1693 }
1694
1695 (void) closedir(dirp);
1696 if (rmdir(ctx->i_tmpdir) != 0) {
1697 err(1, "failed to unlink temporary directory: %s",
1698 ctx->i_tmpdir);
1699 }
1700 }
1701
1702 int
1703 main(int argc, char **argv)
1704 {
1705 int ch;
1706 cw_compiler_t primary = { NULL, NULL, 0 };
1707 cw_compiler_t shadows[10];
1708 int nshadows = 0;
1709 int ret = 0;
1710 boolean_t do_serial = B_FALSE;
1711 boolean_t do_exec = B_FALSE;
1712 boolean_t vflg = B_FALSE;
1713 boolean_t Cflg = B_FALSE;
1714 boolean_t cflg = B_FALSE;
1715 boolean_t nflg = B_FALSE;
1716 char *tmpdir;
1717
1718 cw_ictx_t *main_ctx;
1719
1720 static struct option longopts[] = {
1721 { "compiler", no_argument, NULL, 'c' },
1722 { "noecho", no_argument, NULL, 'n' },
1723 { "primary", required_argument, NULL, 'p' },
1724 { "shadow", required_argument, NULL, 's' },
1725 { "versions", no_argument, NULL, 'v' },
1726 { NULL, 0, NULL, 0 },
1727 };
1728
1729
1730 if ((main_ctx = newictx()) == NULL)
1731 nomem();
1732
1733 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1734 switch (ch) {
1735 case 'c':
1736 cflg = B_TRUE;
1737 break;
1738 case 'C':
1739 Cflg = B_TRUE;
1740 break;
1741 case 'n':
1742 nflg = B_TRUE;
1743 break;
1744 case 'p':
1745 if (primary.c_path != NULL) {
1746 warnx("Only one primary compiler may "
1747 "be specified");
1748 usage();
1749 }
1750
1751 parse_compiler(optarg, &primary);
1752 break;
1753 case 's':
1754 if (nshadows >= 10)
1755 errx(1, "May only use 10 shadows at "
1756 "the moment");
1757 parse_compiler(optarg, &shadows[nshadows]);
1758 nshadows++;
1759 break;
1760 case 'v':
1761 vflg = B_TRUE;
1762 break;
1763 default:
1764 (void) fprintf(stderr, "Did you forget '--'?\n");
1765 usage();
1766 }
1767 }
1768
1769 if (primary.c_path == NULL) {
1770 warnx("A primary compiler must be specified");
1771 usage();
1772 }
1773
1774 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1775 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1776
1777 /* Leave room for argv[0] */
1778 argc -= (optind - 1);
1779 argv += (optind - 1);
1780
1781 main_ctx->i_oldargc = argc;
1782 main_ctx->i_oldargv = argv;
1783 main_ctx->i_flags = CW_F_XLATE;
1784 if (nflg == 0)
1785 main_ctx->i_flags |= CW_F_ECHO;
1786 if (do_exec)
1787 main_ctx->i_flags |= CW_F_EXEC;
1788 if (Cflg)
1789 main_ctx->i_flags |= CW_F_CXX;
1790 main_ctx->i_compiler = &primary;
1791
1792 if (cflg) {
1793 (void) fputs(primary.c_path, stdout);
1794 }
1795
1796 if (vflg) {
1797 (void) printf("cw version %s\n", CW_VERSION);
1798 (void) fflush(stdout);
1799 main_ctx->i_flags &= ~CW_F_ECHO;
1800 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1801 do_serial = 1;
1802 }
1803
1804 tmpdir = getenv("TMPDIR");
1805 if (tmpdir == NULL)
1806 tmpdir = "/tmp";
1807
1808 if (asprintf(&main_ctx->i_tmpdir, "%s/cw.XXXXXX", tmpdir) == -1)
1809 nomem();
1810
1811 if ((main_ctx->i_tmpdir = mkdtemp(main_ctx->i_tmpdir)) == NULL)
1812 errx(1, "failed to create temporary directory");
1813
1814 ret |= exec_ctx(main_ctx, do_serial);
1815
1816 for (int i = 0; i < nshadows; i++) {
1817 int r;
1818 cw_ictx_t *shadow_ctx;
1819
1820 if ((shadow_ctx = newictx()) == NULL)
1821 nomem();
1822
1823 (void) memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1824
1825 shadow_ctx->i_flags |= CW_F_SHADOW;
1826 shadow_ctx->i_compiler = &shadows[i];
1827
1828 r = exec_ctx(shadow_ctx, do_serial);
1829 if (r == 0) {
1830 shadow_ctx->i_next = main_ctx->i_next;
1831 main_ctx->i_next = shadow_ctx;
1832 }
1833 ret |= r;
1834 }
1835
1836 if (!do_serial) {
1837 cw_ictx_t *next = main_ctx;
1838 while (next != NULL) {
1839 cw_ictx_t *toreap = next;
1840 next = next->i_next;
1841 ret |= reap(toreap);
1842 }
1843 }
1844
1845 cleanup(main_ctx);
1846 return (ret);
1847 }