1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2011, Richard Lowe.
24 */
25 /*
26 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
27 * Use is subject to license terms.
28 */
29
30 /*
31 * Wrapper for the GNU C compiler to make it accept the Sun C compiler
32 * arguments where possible.
33 *
34 * Since the translation is inexact, this is something of a work-in-progress.
35 *
36 */
37
38 /* If you modify this file, you must increment CW_VERSION */
39 #define CW_VERSION "1.30"
40
41 /*
42 * -# Verbose mode
43 * -### Show compiler commands built by driver, no compilation
44 * -A<name[(tokens)]> Preprocessor predicate assertion
45 * -B<[static|dynamic]> Specify dynamic or static binding
46 * -C Prevent preprocessor from removing comments
47 * -c Compile only - produce .o files, suppress linking
48 * -cg92 Alias for -xtarget=ss1000
49 * -D<name[=token]> Associate name with token as if by #define
50 * -d[y|n] dynamic [-dy] or static [-dn] option to linker
51 * -E Compile source through preprocessor only, output to stdout
52 * -erroff=<t> Suppress warnings specified by tags t(%none, %all, <tag list>)
53 * -errtags=<a> Display messages with tags a(no, yes)
54 * -errwarn=<t> Treats warnings specified by tags t(%none, %all, <tag list>)
55 * as errors
56 * -fast Optimize using a selection of options
57 * -fd Report old-style function definitions and declarations
58 * -features=zla Allow zero-length arrays
59 * -flags Show this summary of compiler options
274 * -xsb error
275 * -xsbfast error
276 * -xsfpconst error
277 * -xspace ignore (-not -Os)
278 * -xstrconst ignore
279 * -xtarget=<t> table
280 * -xtemp=<dir> error
281 * -xtime error
282 * -xtransition -Wtransition
283 * -xtrigraphs=<yes|no> -trigraphs -notrigraphs
284 * -xunroll=n error
285 * -W0,-xdbggen=no%usedonly -fno-eliminate-unused-debug-symbols
286 * -fno-eliminate-unused-debug-types
287 * -Y<c>,<dir> error
288 * -YA,<dir> error
289 * -YI,<dir> -nostdinc -I<dir>
290 * -YP,<dir> error
291 * -YS,<dir> error
292 */
293
294 #include <stdio.h>
295 #include <sys/types.h>
296 #include <unistd.h>
297 #include <string.h>
298 #include <stdlib.h>
299 #include <ctype.h>
300 #include <fcntl.h>
301 #include <errno.h>
302 #include <stdarg.h>
303 #include <sys/utsname.h>
304 #include <sys/param.h>
305 #include <sys/isa_defs.h>
306 #include <sys/wait.h>
307 #include <sys/stat.h>
308
309 #define CW_F_CXX 0x01
310 #define CW_F_SHADOW 0x02
311 #define CW_F_EXEC 0x04
312 #define CW_F_ECHO 0x08
313 #define CW_F_XLATE 0x10
314 #define CW_F_PROG 0x20
315
316 typedef enum cw_compiler {
317 CW_C_CC = 0,
318 CW_C_GCC
319 } cw_compiler_t;
320
321 static const char *cmds[] = {
322 "cc", "CC",
323 "gcc", "g++"
324 };
325
326 static char default_dir[2][MAXPATHLEN] = {
327 DEFAULT_CC_DIR,
328 DEFAULT_GCC_DIR,
329 };
330
331 #define CC(ctx) \
332 (((ctx)->i_flags & CW_F_SHADOW) ? \
333 ((ctx)->i_compiler == CW_C_CC ? CW_C_GCC : CW_C_CC) : \
334 (ctx)->i_compiler)
335
336 #define CIDX(compiler, flags) \
337 ((int)(compiler) << 1) + ((flags) & CW_F_CXX ? 1 : 0)
338
339 typedef enum cw_op {
340 CW_O_NONE = 0,
341 CW_O_PREPROCESS,
342 CW_O_COMPILE,
343 CW_O_LINK
344 } cw_op_t;
345
346 struct aelist {
347 struct ae {
348 struct ae *ae_next;
349 char *ae_arg;
350 } *ael_head, *ael_tail;
351 int ael_argc;
352 };
353
354 typedef struct cw_ictx {
355 cw_compiler_t i_compiler;
356 struct aelist *i_ae;
357 uint32_t i_flags;
358 int i_oldargc;
359 char **i_oldargv;
360 pid_t i_pid;
361 char i_discard[MAXPATHLEN];
362 char *i_stderr;
363 } cw_ictx_t;
364
365 /*
366 * Status values to indicate which Studio compiler and associated
367 * flags are being used.
368 */
369 #define M32 0x01 /* -m32 - only on Studio 12 */
370 #define M64 0x02 /* -m64 - only on Studio 12 */
371 #define SS11 0x100 /* Studio 11 */
372 #define SS12 0x200 /* Studio 12 */
373
374 #define TRANS_ENTRY 5
375 /*
376 * Translation table definition for the -xarch= flag. The "x_arg"
377 * value is translated into the appropriate gcc flags according
378 * to the values in x_trans[n]. The x_flags indicates what compiler
379 * is being used and what flags have been set via the use of
380 * "x_arg".
381 */
382 typedef struct xarch_table {
383 char *x_arg;
384 int x_flags;
385 char *x_trans[TRANS_ENTRY];
386 } xarch_table_t;
387
388 /*
389 * The translation table for the -xarch= flag used in the Studio compilers.
390 */
391 static const xarch_table_t xtbl[] = {
392 #if defined(__x86)
393 { "generic", SS11 },
394 { "generic64", (SS11|M64), { "-m64", "-mtune=opteron" } },
395 { "amd64", (SS11|M64), { "-m64", "-mtune=opteron" } },
396 { "386", SS11, { "-march=i386" } },
397 { "pentium_pro", SS11, { "-march=pentiumpro" } },
398 { "sse", SS11, { "-msse", "-mfpmath=sse" } },
399 { "sse2", SS11, { "-msse2", "-mfpmath=sse" } },
400 #elif defined(__sparc)
401 { "generic", (SS11|M32), { "-m32", "-mcpu=v8" } },
402 { "generic64", (SS11|M64), { "-m64", "-mcpu=v9" } },
403 { "v8", (SS11|M32), { "-m32", "-mcpu=v8", "-mno-v8plus" } },
404 { "v8plus", (SS11|M32), { "-m32", "-mcpu=v9", "-mv8plus" } },
405 { "v8plusa", (SS11|M32), { "-m32", "-mcpu=ultrasparc", "-mv8plus",
406 "-mvis" } },
407 { "v8plusb", (SS11|M32), { "-m32", "-mcpu=ultrasparc3", "-mv8plus",
408 "-mvis" } },
409 { "v9", (SS11|M64), { "-m64", "-mcpu=v9" } },
410 { "v9a", (SS11|M64), { "-m64", "-mcpu=ultrasparc", "-mvis" } },
411 { "v9b", (SS11|M64), { "-m64", "-mcpu=ultrasparc3", "-mvis" } },
412 { "sparc", SS12, { "-mcpu=v9", "-mv8plus" } },
413 { "sparcvis", SS12, { "-mcpu=ultrasparc", "-mvis" } },
414 { "sparcvis2", SS12, { "-mcpu=ultrasparc3", "-mvis" } }
415 #endif
416 };
417
418 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
419
420 static const char *progname;
421
422 static const char *xchip_tbl[] = {
423 #if defined(__x86)
424 "386", "-mtune=i386", NULL,
425 "486", "-mtune=i486", NULL,
426 "pentium", "-mtune=pentium", NULL,
427 "pentium_pro", "-mtune=pentiumpro", NULL,
428 #elif defined(__sparc)
429 "super", "-mtune=supersparc", NULL,
430 "ultra", "-mtune=ultrasparc", NULL,
431 "ultra3", "-mtune=ultrasparc3", NULL,
432 #endif
433 NULL, NULL
434 };
435
436 static const char *xcode_tbl[] = {
437 #if defined(__sparc)
438 "abs32", "-fno-pic", "-mcmodel=medlow", NULL,
439 "abs44", "-fno-pic", "-mcmodel=medmid", NULL,
440 "abs64", "-fno-pic", "-mcmodel=medany", NULL,
441 "pic13", "-fpic", NULL,
447 static const char *xtarget_tbl[] = {
448 #if defined(__x86)
449 "pentium_pro", "-march=pentiumpro", NULL,
450 #endif /* __x86 */
451 NULL, NULL
452 };
453
454 static const char *xregs_tbl[] = {
455 #if defined(__sparc)
456 "appl", "-mapp-regs", NULL,
457 "no%appl", "-mno-app-regs", NULL,
458 "float", "-mfpu", NULL,
459 "no%float", "-mno-fpu", NULL,
460 #endif /* __sparc */
461 NULL, NULL
462 };
463
464 static void
465 nomem(void)
466 {
467 (void) fprintf(stderr, "%s: error: out of memory\n", progname);
468 exit(1);
469 }
470
471 static void
472 cw_perror(const char *fmt, ...)
473 {
474 va_list ap;
475 int saved_errno = errno;
476
477 (void) fprintf(stderr, "%s: error: ", progname);
478
479 va_start(ap, fmt);
480 (void) vfprintf(stderr, fmt, ap);
481 va_end(ap);
482
483 (void) fprintf(stderr, " (%s)\n", strerror(saved_errno));
484 }
485
486 static void
487 newae(struct aelist *ael, const char *arg)
488 {
489 struct ae *ae;
490
491 if ((ae = calloc(sizeof (*ae), 1)) == NULL)
492 nomem();
493 ae->ae_arg = strdup(arg);
494 if (ael->ael_tail == NULL)
495 ael->ael_head = ae;
496 else
497 ael->ael_tail->ae_next = ae;
498 ael->ael_tail = ae;
499 ael->ael_argc++;
500 }
501
502 static cw_ictx_t *
503 newictx(void)
504 {
505 cw_ictx_t *ctx = calloc(sizeof (cw_ictx_t), 1);
506 if (ctx)
507 if ((ctx->i_ae = calloc(sizeof (struct aelist), 1)) == NULL) {
508 free(ctx);
509 return (NULL);
510 }
511
512 return (ctx);
513 }
514
515 static void
516 error(const char *arg)
517 {
518 (void) fprintf(stderr,
519 "%s: error: mapping failed at or near arg '%s'\n", progname, arg);
520 exit(2);
521 }
522
523 /*
524 * Add the current favourite set of warnings to the gcc invocation.
525 */
526 static void
527 warnings(struct aelist *h)
528 {
529 static int warningsonce;
530
531 if (warningsonce++)
532 return;
533
534 /*
535 * Enable as many warnings as exist, then disable those that we never
536 * ever want.
537 */
538 newae(h, "-Wall");
539 newae(h, "-Wextra");
540 }
541
542 static void
543 optim_disable(struct aelist *h, int level)
544 {
545 if (level >= 2) {
546 newae(h, "-fno-strict-aliasing");
547 newae(h, "-fno-unit-at-a-time");
548 newae(h, "-fno-optimize-sibling-calls");
549 }
550 }
551
552 /* ARGSUSED */
553 static void
554 Xamode(struct aelist *h)
555 {
556 }
557
558 static void
559 Xcmode(struct aelist *h)
560 {
561 static int xconce;
562
563 if (xconce++)
564 return;
565
566 newae(h, "-ansi");
567 newae(h, "-pedantic-errors");
568 }
569
570 static void
571 Xsmode(struct aelist *h)
572 {
573 static int xsonce;
574
575 if (xsonce++)
576 return;
577
578 newae(h, "-traditional");
579 newae(h, "-traditional-cpp");
580 }
581
582 static void
583 usage()
584 {
585 (void) fprintf(stderr,
586 "usage: %s { -_cc | -_gcc | -_CC | -_g++ } [ -_compiler | ... ]\n",
587 progname);
588 exit(2);
589 }
590
591 static int
592 xlate_xtb(struct aelist *h, const char *xarg)
593 {
594 int i, j;
595
596 for (i = 0; i < xtbl_size; i++) {
597 if (strcmp(xtbl[i].x_arg, xarg) == 0)
598 break;
599 }
600
601 /*
602 * At the end of the table and so no matching "arg" entry
603 * found and so this must be a bad -xarch= flag.
604 */
605 if (i == xtbl_size)
606 error(xarg);
607
626
627 if (*table == NULL)
628 error(xarg);
629
630 table++;
631
632 while (*table != NULL) {
633 newae(h, *table);
634 table++;
635 }
636 }
637
638 static void
639 do_gcc(cw_ictx_t *ctx)
640 {
641 int c;
642 int pic = 0, nolibc = 0;
643 int in_output = 0, seen_o = 0, c_files = 0;
644 cw_op_t op = CW_O_LINK;
645 char *model = NULL;
646 int mflag = 0;
647
648 if (ctx->i_flags & CW_F_PROG) {
649 newae(ctx->i_ae, "--version");
650 return;
651 }
652
653 newae(ctx->i_ae, "-fident");
654 newae(ctx->i_ae, "-finline");
655 newae(ctx->i_ae, "-fno-inline-functions");
656 newae(ctx->i_ae, "-fno-builtin");
657 newae(ctx->i_ae, "-fno-asm");
658 newae(ctx->i_ae, "-fdiagnostics-show-option");
659 newae(ctx->i_ae, "-nodefaultlibs");
660
661 #if defined(__sparc)
662 /*
663 * The SPARC ldd and std instructions require 8-byte alignment of
664 * their address operand. gcc correctly uses them only when the
665 * ABI requires 8-byte alignment; unfortunately we have a number of
666 * pieces of buggy code that doesn't conform to the ABI. This
667 * flag makes gcc work more like Studio with -xmemalign=4.
668 */
669 newae(ctx->i_ae, "-mno-integer-ldd-std");
670 #endif
671
672 /*
673 * This is needed because 'u' is defined
674 * under a conditional on 'sun'. Should
675 * probably just remove the conditional,
676 * or make it be dependent on '__sun'.
677 *
678 * -Dunix is also missing in enhanced ANSI mode
679 */
680 newae(ctx->i_ae, "-D__sun");
681
682 /*
683 * Walk the argument list, translating as we go ..
684 */
685
686 while (--ctx->i_oldargc > 0) {
687 char *arg = *++ctx->i_oldargv;
688 size_t arglen = strlen(arg);
689
690 if (*arg == '-') {
691 arglen--;
692 } else {
693 /*
694 * Discard inline files that gcc doesn't grok
695 */
696 if (!in_output && arglen > 3 &&
697 strcmp(arg + arglen - 3, ".il") == 0)
698 continue;
699
700 if (!in_output && arglen > 2 &&
701 arg[arglen - 2] == '.' &&
702 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
703 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
704 c_files++;
705
706 /*
707 * Otherwise, filenames and partial arguments
708 * are passed through for gcc to chew on. However,
709 * output is always discarded for the secondary
710 * compiler.
711 */
712 if ((ctx->i_flags & CW_F_SHADOW) && in_output)
713 newae(ctx->i_ae, ctx->i_discard);
714 else
715 newae(ctx->i_ae, arg);
716 in_output = 0;
717 continue;
718 }
719
720 if (ctx->i_flags & CW_F_CXX) {
721 if (strncmp(arg, "-compat=", 8) == 0) {
722 /* discard -compat=4 and -compat=5 */
723 continue;
724 }
725 if (strcmp(arg, "-Qoption") == 0) {
726 /* discard -Qoption and its two arguments */
727 if (ctx->i_oldargc < 3)
728 error(arg);
729 ctx->i_oldargc -= 2;
730 ctx->i_oldargv += 2;
731 continue;
732 }
733 if (strcmp(arg, "-xwe") == 0) {
734 /* turn warnings into errors */
735 newae(ctx->i_ae, "-Werror");
736 continue;
737 }
738 if (strcmp(arg, "-noex") == 0) {
739 /* no exceptions */
740 newae(ctx->i_ae, "-fno-exceptions");
755 if (strcmp(arg, "-norunpath") == 0) {
756 /* gcc has no corresponding option */
757 continue;
758 }
759 if (strcmp(arg, "-nolib") == 0) {
760 /* -nodefaultlibs is on by default */
761 nolibc = 1;
762 continue;
763 }
764 #if defined(__sparc)
765 if (strcmp(arg, "-cg92") == 0) {
766 mflag |= xlate_xtb(ctx->i_ae, "v8");
767 xlate(ctx->i_ae, "super", xchip_tbl);
768 continue;
769 }
770 #endif /* __sparc */
771 }
772
773 switch ((c = arg[1])) {
774 case '_':
775 if (strcmp(arg, "-_noecho") == 0)
776 ctx->i_flags &= ~CW_F_ECHO;
777 else if (strncmp(arg, "-_cc=", 5) == 0 ||
778 strncmp(arg, "-_CC=", 5) == 0)
779 /* EMPTY */;
780 else if (strncmp(arg, "-_gcc=", 6) == 0 ||
781 strncmp(arg, "-_g++=", 6) == 0)
782 newae(ctx->i_ae, arg + 6);
783 else
784 error(arg);
785 break;
786 case '#':
787 if (arglen == 1) {
788 newae(ctx->i_ae, "-v");
789 break;
790 }
791 error(arg);
792 break;
793 case 'g':
794 newae(ctx->i_ae, "-gdwarf-2");
795 break;
796 case 'E':
797 if (arglen == 1) {
798 newae(ctx->i_ae, "-xc");
799 newae(ctx->i_ae, arg);
800 op = CW_O_PREPROCESS;
801 nolibc = 1;
802 break;
803 }
804 error(arg);
1406 char *s = strdup(arg);
1407 s[0] = '-';
1408 s[1] = 'I';
1409 newae(ctx->i_ae, "-nostdinc");
1410 newae(ctx->i_ae, s);
1411 free(s);
1412 break;
1413 }
1414 error(arg);
1415 break;
1416 case 'Q':
1417 /*
1418 * We could map -Qy into -Wl,-Qy etc.
1419 */
1420 default:
1421 error(arg);
1422 break;
1423 }
1424 }
1425
1426 if (c_files > 1 && (ctx->i_flags & CW_F_SHADOW) &&
1427 op != CW_O_PREPROCESS) {
1428 (void) fprintf(stderr, "%s: error: multiple source files are "
1429 "allowed only with -E or -P\n", progname);
1430 exit(2);
1431 }
1432
1433 /*
1434 * Make sure that we do not have any unintended interactions between
1435 * the xarch options passed in and the version of the Studio compiler
1436 * used.
1437 */
1438 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1439 (void) fprintf(stderr,
1440 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1441 exit(2);
1442 }
1443
1444 switch (mflag) {
1445 case 0:
1446 /* FALLTHROUGH */
1447 case M32:
1448 #if defined(__sparc)
1449 /*
1450 * Only -m32 is defined and so put in the missing xarch
1451 * translation.
1452 */
1453 newae(ctx->i_ae, "-mcpu=v8");
1454 newae(ctx->i_ae, "-mno-v8plus");
1455 #endif
1456 break;
1457 case M64:
1458 #if defined(__sparc)
1459 /*
1460 * Only -m64 is defined and so put in the missing xarch
1461 * translation.
1494 exit(2);
1495 }
1496 if (op == CW_O_LINK && (ctx->i_flags & CW_F_SHADOW))
1497 exit(0);
1498
1499 if (model && !pic)
1500 newae(ctx->i_ae, model);
1501 if (!nolibc)
1502 newae(ctx->i_ae, "-lc");
1503 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1504 newae(ctx->i_ae, "-o");
1505 newae(ctx->i_ae, ctx->i_discard);
1506 }
1507 }
1508
1509 static void
1510 do_cc(cw_ictx_t *ctx)
1511 {
1512 int in_output = 0, seen_o = 0;
1513 cw_op_t op = CW_O_LINK;
1514
1515 if (ctx->i_flags & CW_F_PROG) {
1516 newae(ctx->i_ae, "-V");
1517 return;
1518 }
1519
1520 while (--ctx->i_oldargc > 0) {
1521 char *arg = *++ctx->i_oldargv;
1522
1523 if (*arg != '-') {
1524 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1525 newae(ctx->i_ae, arg);
1526 } else {
1527 in_output = 0;
1528 newae(ctx->i_ae, ctx->i_discard);
1529 }
1530 continue;
1531 }
1532 switch (*(arg + 1)) {
1533 case '_':
1534 if (strcmp(arg, "-_noecho") == 0) {
1535 ctx->i_flags &= ~CW_F_ECHO;
1536 } else if (strncmp(arg, "-_cc=", 5) == 0 ||
1537 strncmp(arg, "-_CC=", 5) == 0) {
1538 newae(ctx->i_ae, arg + 5);
1539 } else if (strncmp(arg, "-_gcc=", 6) != 0 &&
1540 strncmp(arg, "-_g++=", 6) != 0) {
1541 (void) fprintf(stderr,
1542 "%s: invalid argument '%s'\n", progname,
1543 arg);
1544 exit(2);
1545 }
1546 break;
1547 case 'V':
1548 ctx->i_flags &= ~CW_F_ECHO;
1549 newae(ctx->i_ae, arg);
1550 break;
1551 case 'o':
1552 seen_o = 1;
1553 if (strlen(arg) == 2) {
1554 in_output = 1;
1555 newae(ctx->i_ae, arg);
1556 } else if (ctx->i_flags & CW_F_SHADOW) {
1557 newae(ctx->i_ae, "-o");
1558 newae(ctx->i_ae, ctx->i_discard);
1559 } else {
1560 newae(ctx->i_ae, arg);
1561 }
1562 break;
1563 case 'c':
1564 case 'S':
1565 if (strlen(arg) == 2)
1566 op = CW_O_COMPILE;
1567 newae(ctx->i_ae, arg);
1568 break;
1569 case 'E':
1570 case 'P':
1571 if (strlen(arg) == 2)
1572 op = CW_O_PREPROCESS;
1573 /*FALLTHROUGH*/
1574 default:
1575 newae(ctx->i_ae, arg);
1576 }
1577 }
1578
1579 if ((op == CW_O_LINK || op == CW_O_PREPROCESS) &&
1580 (ctx->i_flags & CW_F_SHADOW))
1581 exit(0);
1582
1583 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1584 newae(ctx->i_ae, "-o");
1585 newae(ctx->i_ae, ctx->i_discard);
1586 }
1587 }
1588
1589 static void
1590 prepctx(cw_ictx_t *ctx)
1591 {
1592 const char *dir = NULL, *cmd;
1593 char *program = NULL;
1594 size_t len;
1595
1596 switch (CIDX(CC(ctx), ctx->i_flags)) {
1597 case CIDX(CW_C_CC, 0):
1598 program = getenv("CW_CC");
1599 dir = getenv("CW_CC_DIR");
1600 break;
1601 case CIDX(CW_C_CC, CW_F_CXX):
1602 program = getenv("CW_CPLUSPLUS");
1603 dir = getenv("CW_CPLUSPLUS_DIR");
1604 break;
1605 case CIDX(CW_C_GCC, 0):
1606 program = getenv("CW_GCC");
1607 dir = getenv("CW_GCC_DIR");
1608 break;
1609 case CIDX(CW_C_GCC, CW_F_CXX):
1610 program = getenv("CW_GPLUSPLUS");
1611 dir = getenv("CW_GPLUSPLUS_DIR");
1612 break;
1613 }
1614
1615 if (program == NULL) {
1616 if (dir == NULL)
1617 dir = default_dir[CC(ctx)];
1618 cmd = cmds[CIDX(CC(ctx), ctx->i_flags)];
1619 len = strlen(dir) + strlen(cmd) + 2;
1620 if ((program = malloc(len)) == NULL)
1621 nomem();
1622 (void) snprintf(program, len, "%s/%s", dir, cmd);
1623 }
1624
1625 newae(ctx->i_ae, program);
1626
1627 if (ctx->i_flags & CW_F_PROG) {
1628 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1629 "shadow" : "primary", program);
1630 (void) fflush(stdout);
1631 }
1632
1633 if (!(ctx->i_flags & CW_F_XLATE))
1634 return;
1635
1636 switch (CC(ctx)) {
1637 case CW_C_CC:
1638 do_cc(ctx);
1639 break;
1640 case CW_C_GCC:
1641 do_gcc(ctx);
1642 break;
1643 }
1644 }
1645
1646 static int
1647 invoke(cw_ictx_t *ctx)
1648 {
1649 char **newargv;
1650 int ac;
1651 struct ae *a;
1652
1653 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1654 NULL)
1655 nomem();
1656
1657 if (ctx->i_flags & CW_F_ECHO)
1658 (void) fprintf(stderr, "+ ");
1659
1660 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1669 (void) fprintf(stderr, "\n");
1670 (void) fflush(stderr);
1671 }
1672
1673 if (!(ctx->i_flags & CW_F_EXEC))
1674 return (0);
1675
1676 /*
1677 * We must fix up the environment here so that the
1678 * dependency files are not trampled by the shadow compiler.
1679 */
1680 if ((ctx->i_flags & CW_F_SHADOW) &&
1681 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1682 unsetenv("DEPENDENCIES_OUTPUT") != 0)) {
1683 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1684 strerror(errno));
1685 return (-1);
1686 }
1687
1688 (void) execv(newargv[0], newargv);
1689 cw_perror("couldn't run %s", newargv[0]);
1690
1691 return (-1);
1692 }
1693
1694 static int
1695 reap(cw_ictx_t *ctx)
1696 {
1697 int status, ret = 0;
1698 char buf[1024];
1699 struct stat s;
1700
1701 /*
1702 * Only wait for one specific child.
1703 */
1704 if (ctx->i_pid <= 0)
1705 return (-1);
1706
1707 do {
1708 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1709 cw_perror("cannot reap child");
1710 return (-1);
1711 }
1712 if (status != 0) {
1713 if (WIFSIGNALED(status)) {
1714 ret = -WTERMSIG(status);
1715 break;
1716 } else if (WIFEXITED(status)) {
1717 ret = WEXITSTATUS(status);
1718 break;
1719 }
1720 }
1721 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1722
1723 (void) unlink(ctx->i_discard);
1724
1725 if (stat(ctx->i_stderr, &s) < 0) {
1726 cw_perror("stat failed on child cleanup");
1727 return (-1);
1728 }
1729 if (s.st_size != 0) {
1730 FILE *f;
1731
1732 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1733 while (fgets(buf, sizeof (buf), f))
1734 (void) fprintf(stderr, "%s", buf);
1735 (void) fflush(stderr);
1736 (void) fclose(f);
1737 }
1738 }
1739 (void) unlink(ctx->i_stderr);
1740 free(ctx->i_stderr);
1741
1742 /*
1743 * cc returns an error code when given -V; we want that to succeed.
1744 */
1745 if (ctx->i_flags & CW_F_PROG)
1746 return (0);
1759 */
1760 if ((file = tempnam(NULL, ".cw")) == NULL) {
1761 nomem();
1762 return (-1);
1763 }
1764 (void) strlcpy(ctx->i_discard, file, MAXPATHLEN);
1765 (void) strlcat(ctx->i_discard, ".o", MAXPATHLEN);
1766 free(file);
1767
1768 if ((ctx->i_stderr = tempnam(NULL, ".cw")) == NULL) {
1769 nomem();
1770 return (-1);
1771 }
1772
1773 if ((ctx->i_pid = fork()) == 0) {
1774 int fd;
1775
1776 (void) fclose(stderr);
1777 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1778 0666)) < 0) {
1779 cw_perror("open failed for standard error");
1780 exit(1);
1781 }
1782 if (dup2(fd, 2) < 0) {
1783 cw_perror("dup2 failed for standard error");
1784 exit(1);
1785 }
1786 if (fd != 2)
1787 (void) close(fd);
1788 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1789 cw_perror("freopen failed for /dev/fd/2");
1790 exit(1);
1791 }
1792 prepctx(ctx);
1793 exit(invoke(ctx));
1794 }
1795
1796 if (ctx->i_pid < 0) {
1797 cw_perror("fork failed");
1798 return (1);
1799 }
1800
1801 if (block)
1802 return (reap(ctx));
1803
1804 return (0);
1805 }
1806
1807 int
1808 main(int argc, char **argv)
1809 {
1810 cw_ictx_t *ctx = newictx();
1811 cw_ictx_t *ctx_shadow = newictx();
1812 const char *dir;
1813 int do_serial, do_shadow;
1814 int ret = 0;
1815
1816 if ((progname = strrchr(argv[0], '/')) == NULL)
1817 progname = argv[0];
1818 else
1819 progname++;
1820
1821 if (ctx == NULL || ctx_shadow == NULL)
1822 nomem();
1823
1824 ctx->i_flags = CW_F_ECHO|CW_F_XLATE;
1825
1826 /*
1827 * Figure out where to get our tools from. This depends on
1828 * the environment variables set at run time.
1829 */
1830 if ((dir = getenv("SPRO_VROOT")) != NULL) {
1831 (void) snprintf(default_dir[CW_C_CC], MAXPATHLEN,
1832 "%s/bin", dir);
1833 } else if ((dir = getenv("SPRO_ROOT")) != NULL) {
1834 (void) snprintf(default_dir[CW_C_CC], MAXPATHLEN,
1835 "%s/SS12/bin", dir);
1836 } else if ((dir = getenv("BUILD_TOOLS")) != NULL) {
1837 (void) snprintf(default_dir[CW_C_CC], MAXPATHLEN,
1838 "%s/SUNWspro/SS12/bin", dir);
1839 }
1840
1841 if ((dir = getenv("GCC_ROOT")) != NULL) {
1842 (void) snprintf(default_dir[CW_C_GCC], MAXPATHLEN,
1843 "%s/bin", dir);
1844 }
1845
1846 do_shadow = (getenv("CW_NO_SHADOW") ? 0 : 1);
1847 do_serial = (getenv("CW_SHADOW_SERIAL") ? 1 : 0);
1848
1849 if (getenv("CW_NO_EXEC") == NULL)
1850 ctx->i_flags |= CW_F_EXEC;
1851
1852 /*
1853 * The first argument must be one of "-_cc", "-_gcc", "-_CC", or "-_g++"
1854 */
1855 if (argc == 1)
1856 usage();
1857 argc--;
1858 argv++;
1859 if (strcmp(argv[0], "-_cc") == 0) {
1860 ctx->i_compiler = CW_C_CC;
1861 } else if (strcmp(argv[0], "-_gcc") == 0) {
1862 ctx->i_compiler = CW_C_GCC;
1863 } else if (strcmp(argv[0], "-_CC") == 0) {
1864 ctx->i_compiler = CW_C_CC;
1865 ctx->i_flags |= CW_F_CXX;
1866 } else if (strcmp(argv[0], "-_g++") == 0) {
1867 ctx->i_compiler = CW_C_GCC;
1868 ctx->i_flags |= CW_F_CXX;
1869 } else {
1870 /* assume "-_gcc" by default */
1871 argc++;
1872 argv--;
1873 ctx->i_compiler = CW_C_GCC;
1874 }
1875
1876 /*
1877 * -_compiler - tell us the path to the primary compiler only
1878 */
1879 if (argc > 1 && strcmp(argv[1], "-_compiler") == 0) {
1880 ctx->i_flags &= ~CW_F_XLATE;
1881 prepctx(ctx);
1882 (void) printf("%s\n", ctx->i_ae->ael_head->ae_arg);
1883 return (0);
1884 }
1885
1886 /*
1887 * -_versions - tell us the cw version, paths to all compilers, and
1888 * ask each for its version if we know how.
1889 */
1890 if (argc > 1 && strcmp(argv[1], "-_versions") == 0) {
1891 (void) printf("cw version %s", CW_VERSION);
1892 if (!do_shadow)
1893 (void) printf(" (SHADOW MODE DISABLED)");
1894 (void) printf("\n");
1895 (void) fflush(stdout);
1896 ctx->i_flags &= ~CW_F_ECHO;
1897 ctx->i_flags |= CW_F_PROG|CW_F_EXEC;
1898 argc--;
1899 argv++;
1900 do_serial = 1;
1901 }
1902
1903 ctx->i_oldargc = argc;
1904 ctx->i_oldargv = argv;
1905
1906 ret |= exec_ctx(ctx, do_serial);
1907
1908 if (do_shadow) {
1909 (void) memcpy(ctx_shadow, ctx, sizeof (cw_ictx_t));
1910 ctx_shadow->i_flags |= CW_F_SHADOW;
1911 ret |= exec_ctx(ctx_shadow, 1);
1912 }
1913
1914 if (!do_serial)
1915 ret |= reap(ctx);
1916
1917 return (ret);
1918 }
|
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
31 /*
32 * Wrapper for the GNU C compiler to make it accept the Sun C compiler
33 * arguments where possible.
34 *
35 * Since the translation is inexact, this is something of a work-in-progress.
36 *
37 */
38
39 /* If you modify this file, you must increment CW_VERSION */
40 #define CW_VERSION "2.0"
41
42 /*
43 * -# Verbose mode
44 * -### Show compiler commands built by driver, no compilation
45 * -A<name[(tokens)]> Preprocessor predicate assertion
46 * -B<[static|dynamic]> Specify dynamic or static binding
47 * -C Prevent preprocessor from removing comments
48 * -c Compile only - produce .o files, suppress linking
49 * -cg92 Alias for -xtarget=ss1000
50 * -D<name[=token]> Associate name with token as if by #define
51 * -d[y|n] dynamic [-dy] or static [-dn] option to linker
52 * -E Compile source through preprocessor only, output to stdout
53 * -erroff=<t> Suppress warnings specified by tags t(%none, %all, <tag list>)
54 * -errtags=<a> Display messages with tags a(no, yes)
55 * -errwarn=<t> Treats warnings specified by tags t(%none, %all, <tag list>)
56 * as errors
57 * -fast Optimize using a selection of options
58 * -fd Report old-style function definitions and declarations
59 * -features=zla Allow zero-length arrays
60 * -flags Show this summary of compiler options
275 * -xsb error
276 * -xsbfast error
277 * -xsfpconst error
278 * -xspace ignore (-not -Os)
279 * -xstrconst ignore
280 * -xtarget=<t> table
281 * -xtemp=<dir> error
282 * -xtime error
283 * -xtransition -Wtransition
284 * -xtrigraphs=<yes|no> -trigraphs -notrigraphs
285 * -xunroll=n error
286 * -W0,-xdbggen=no%usedonly -fno-eliminate-unused-debug-symbols
287 * -fno-eliminate-unused-debug-types
288 * -Y<c>,<dir> error
289 * -YA,<dir> error
290 * -YI,<dir> -nostdinc -I<dir>
291 * -YP,<dir> error
292 * -YS,<dir> error
293 */
294
295 #include <ctype.h>
296 #include <err.h>
297 #include <errno.h>
298 #include <fcntl.h>
299 #include <getopt.h>
300 #include <stdio.h>
301 #include <stdlib.h>
302 #include <string.h>
303 #include <unistd.h>
304
305 #include <sys/param.h>
306 #include <sys/stat.h>
307 #include <sys/types.h>
308 #include <sys/utsname.h>
309 #include <sys/wait.h>
310
311 #define CW_F_CXX 0x01
312 #define CW_F_SHADOW 0x02
313 #define CW_F_EXEC 0x04
314 #define CW_F_ECHO 0x08
315 #define CW_F_XLATE 0x10
316 #define CW_F_PROG 0x20
317
318 typedef enum cw_op {
319 CW_O_NONE = 0,
320 CW_O_PREPROCESS,
321 CW_O_COMPILE,
322 CW_O_LINK
323 } cw_op_t;
324
325 struct aelist {
326 struct ae {
327 struct ae *ae_next;
328 char *ae_arg;
329 } *ael_head, *ael_tail;
330 int ael_argc;
331 };
332
333 typedef enum {
334 GNU,
335 SUN
336 } compiler_style_t;
337
338 #define COMPILER_STYLE(comp) (comp->style == SUN ? "cc" : "gcc")
339
340 typedef struct {
341 char *name;
342 char *path;
343 compiler_style_t style;
344 } cw_compiler_t;
345
346 typedef struct cw_ictx {
347 cw_compiler_t *i_compiler;
348 struct aelist *i_ae;
349 uint32_t i_flags;
350 int i_oldargc;
351 char **i_oldargv;
352 pid_t i_pid;
353 char i_discard[MAXPATHLEN];
354 char *i_stderr;
355 } cw_ictx_t;
356
357 /*
358 * Status values to indicate which Studio compiler and associated
359 * flags are being used.
360 */
361 #define M32 0x01 /* -m32 - only on Studio 12 */
362 #define M64 0x02 /* -m64 - only on Studio 12 */
363 #define SS11 0x100 /* Studio 11 */
364 #define SS12 0x200 /* Studio 12 */
365
366 #define TRANS_ENTRY 5
367 /*
368 * Translation table definition for the -xarch= flag. The "x_arg"
369 * value is translated into the appropriate gcc flags according
370 * to the values in x_trans[n]. The x_flags indicates what compiler
371 * is being used and what flags have been set via the use of
372 * "x_arg".
373 */
374 typedef struct xarch_table {
375 char *x_arg;
376 int x_flags;
377 char *x_trans[TRANS_ENTRY];
378 } xarch_table_t;
379
380 /*
381 * The translation table for the -xarch= flag used in the Studio compilers.
382 */
383 static const xarch_table_t xtbl[] = {
384 #if defined(__x86)
385 { "generic", SS11, {NULL} },
386 { "generic64", (SS11|M64), { "-m64", "-mtune=opteron" } },
387 { "amd64", (SS11|M64), { "-m64", "-mtune=opteron" } },
388 { "386", SS11, { "-march=i386" } },
389 { "pentium_pro", SS11, { "-march=pentiumpro" } },
390 { "sse", SS11, { "-msse", "-mfpmath=sse" } },
391 { "sse2", SS11, { "-msse2", "-mfpmath=sse" } },
392 #elif defined(__sparc)
393 { "generic", (SS11|M32), { "-m32", "-mcpu=v8" } },
394 { "generic64", (SS11|M64), { "-m64", "-mcpu=v9" } },
395 { "v8", (SS11|M32), { "-m32", "-mcpu=v8", "-mno-v8plus" } },
396 { "v8plus", (SS11|M32), { "-m32", "-mcpu=v9", "-mv8plus" } },
397 { "v8plusa", (SS11|M32), { "-m32", "-mcpu=ultrasparc", "-mv8plus",
398 "-mvis" } },
399 { "v8plusb", (SS11|M32), { "-m32", "-mcpu=ultrasparc3", "-mv8plus",
400 "-mvis" } },
401 { "v9", (SS11|M64), { "-m64", "-mcpu=v9" } },
402 { "v9a", (SS11|M64), { "-m64", "-mcpu=ultrasparc", "-mvis" } },
403 { "v9b", (SS11|M64), { "-m64", "-mcpu=ultrasparc3", "-mvis" } },
404 { "sparc", SS12, { "-mcpu=v9", "-mv8plus" } },
405 { "sparcvis", SS12, { "-mcpu=ultrasparc", "-mvis" } },
406 { "sparcvis2", SS12, { "-mcpu=ultrasparc3", "-mvis" } }
407 #endif
408 };
409
410 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
411
412 static const char *xchip_tbl[] = {
413 #if defined(__x86)
414 "386", "-mtune=i386", NULL,
415 "486", "-mtune=i486", NULL,
416 "pentium", "-mtune=pentium", NULL,
417 "pentium_pro", "-mtune=pentiumpro", NULL,
418 #elif defined(__sparc)
419 "super", "-mtune=supersparc", NULL,
420 "ultra", "-mtune=ultrasparc", NULL,
421 "ultra3", "-mtune=ultrasparc3", NULL,
422 #endif
423 NULL, NULL
424 };
425
426 static const char *xcode_tbl[] = {
427 #if defined(__sparc)
428 "abs32", "-fno-pic", "-mcmodel=medlow", NULL,
429 "abs44", "-fno-pic", "-mcmodel=medmid", NULL,
430 "abs64", "-fno-pic", "-mcmodel=medany", NULL,
431 "pic13", "-fpic", NULL,
437 static const char *xtarget_tbl[] = {
438 #if defined(__x86)
439 "pentium_pro", "-march=pentiumpro", NULL,
440 #endif /* __x86 */
441 NULL, NULL
442 };
443
444 static const char *xregs_tbl[] = {
445 #if defined(__sparc)
446 "appl", "-mapp-regs", NULL,
447 "no%appl", "-mno-app-regs", NULL,
448 "float", "-mfpu", NULL,
449 "no%float", "-mno-fpu", NULL,
450 #endif /* __sparc */
451 NULL, NULL
452 };
453
454 static void
455 nomem(void)
456 {
457 (void) errx(1, "out of memory");
458 }
459
460 static void
461 newae(struct aelist *ael, const char *arg)
462 {
463 struct ae *ae;
464
465 if ((ae = calloc(sizeof (*ae), 1)) == NULL)
466 nomem();
467 ae->ae_arg = strdup(arg);
468 if (ael->ael_tail == NULL)
469 ael->ael_head = ae;
470 else
471 ael->ael_tail->ae_next = ae;
472 ael->ael_tail = ae;
473 ael->ael_argc++;
474 }
475
476 static cw_ictx_t *
477 newictx(void)
478 {
479 cw_ictx_t *ctx = calloc(sizeof (cw_ictx_t), 1);
480 if (ctx)
481 if ((ctx->i_ae = calloc(sizeof (struct aelist), 1)) == NULL) {
482 free(ctx);
483 return (NULL);
484 }
485
486 return (ctx);
487 }
488
489 static void
490 error(const char *arg)
491 {
492 errx(2, "error: mapping failed at or near arg '%s'\n", arg);
493 }
494
495 /*
496 * Add the current favourite set of warnings to the gcc invocation.
497 */
498 static void
499 warnings(struct aelist *h)
500 {
501 static int warningsonce;
502
503 if (warningsonce++)
504 return;
505
506 /*
507 * Enable as many warnings as exist, then disable those that we never
508 * ever want.
509 */
510 newae(h, "-Wall");
511 newae(h, "-Wextra");
512 }
513
514 static void
515 optim_disable(struct aelist *h, int level)
516 {
517 if (level >= 2) {
518 newae(h, "-fno-strict-aliasing");
519 newae(h, "-fno-unit-at-a-time");
520 newae(h, "-fno-optimize-sibling-calls");
521 }
522 }
523
524 /* ARGSUSED */
525 static void
526 Xamode(struct aelist *h __attribute__((__unused__)))
527 {
528 }
529
530 static void
531 Xcmode(struct aelist *h)
532 {
533 static int xconce;
534
535 if (xconce++)
536 return;
537
538 newae(h, "-ansi");
539 newae(h, "-pedantic-errors");
540 }
541
542 static void
543 Xsmode(struct aelist *h)
544 {
545 static int xsonce;
546
547 if (xsonce++)
548 return;
549
550 newae(h, "-traditional");
551 newae(h, "-traditional-cpp");
552 }
553
554 static void
555 usage()
556 {
557 extern char *__progname;
558 (void) fprintf(stderr,
559 "usage: %s [-C] [--versions] --primary <compiler> "
560 "[--shadow <compiler>]... -- cflags...\n",
561 __progname);
562 (void) fprintf(stderr, "compilers take the form: name,path,style\n"
563 " - name: a unique name usable in flag specifiers\n"
564 " - path: path to the compiler binary\n"
565 " - style: the style of flags expected: either sun or gnu\n");
566 exit(2);
567 }
568
569 static int
570 xlate_xtb(struct aelist *h, const char *xarg)
571 {
572 int i, j;
573
574 for (i = 0; i < xtbl_size; i++) {
575 if (strcmp(xtbl[i].x_arg, xarg) == 0)
576 break;
577 }
578
579 /*
580 * At the end of the table and so no matching "arg" entry
581 * found and so this must be a bad -xarch= flag.
582 */
583 if (i == xtbl_size)
584 error(xarg);
585
604
605 if (*table == NULL)
606 error(xarg);
607
608 table++;
609
610 while (*table != NULL) {
611 newae(h, *table);
612 table++;
613 }
614 }
615
616 static void
617 do_gcc(cw_ictx_t *ctx)
618 {
619 int c;
620 int pic = 0, nolibc = 0;
621 int in_output = 0, seen_o = 0, c_files = 0;
622 cw_op_t op = CW_O_LINK;
623 char *model = NULL;
624 char *nameflag;
625 int mflag = 0;
626
627 if (ctx->i_flags & CW_F_PROG) {
628 newae(ctx->i_ae, "--version");
629 return;
630 }
631
632 newae(ctx->i_ae, "-fident");
633 newae(ctx->i_ae, "-finline");
634 newae(ctx->i_ae, "-fno-inline-functions");
635 newae(ctx->i_ae, "-fno-builtin");
636 newae(ctx->i_ae, "-fno-asm");
637 newae(ctx->i_ae, "-fdiagnostics-show-option");
638 newae(ctx->i_ae, "-nodefaultlibs");
639
640 #if defined(__sparc)
641 /*
642 * The SPARC ldd and std instructions require 8-byte alignment of
643 * their address operand. gcc correctly uses them only when the
644 * ABI requires 8-byte alignment; unfortunately we have a number of
645 * pieces of buggy code that doesn't conform to the ABI. This
646 * flag makes gcc work more like Studio with -xmemalign=4.
647 */
648 newae(ctx->i_ae, "-mno-integer-ldd-std");
649 #endif
650
651 /*
652 * This is needed because 'u' is defined
653 * under a conditional on 'sun'. Should
654 * probably just remove the conditional,
655 * or make it be dependent on '__sun'.
656 *
657 * -Dunix is also missing in enhanced ANSI mode
658 */
659 newae(ctx->i_ae, "-D__sun");
660
661 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->name) == -1)
662 nomem();
663
664 /*
665 * Walk the argument list, translating as we go ..
666 */
667 while (--ctx->i_oldargc > 0) {
668 char *arg = *++ctx->i_oldargv;
669 size_t arglen = strlen(arg);
670
671 if (*arg == '-') {
672 arglen--;
673 } else {
674 /*
675 * Discard inline files that gcc doesn't grok
676 */
677 if (!in_output && arglen > 3 &&
678 strcmp(arg + arglen - 3, ".il") == 0)
679 continue;
680
681 if (!in_output && arglen > 2 &&
682 arg[arglen - 2] == '.' &&
683 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
684 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
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, ctx->i_discard);
695 else
696 newae(ctx->i_ae, arg);
697 in_output = 0;
698 continue;
699 }
700
701 if (ctx->i_flags & CW_F_CXX) {
702 if (strncmp(arg, "-_g++=", 6) == 0) {
703 newae(ctx->i_ae, strchr(arg, '=') + 1);
704 continue;
705 }
706 if (strncmp(arg, "-compat=", 8) == 0) {
707 /* discard -compat=4 and -compat=5 */
708 continue;
709 }
710 if (strcmp(arg, "-Qoption") == 0) {
711 /* discard -Qoption and its two arguments */
712 if (ctx->i_oldargc < 3)
713 error(arg);
714 ctx->i_oldargc -= 2;
715 ctx->i_oldargv += 2;
716 continue;
717 }
718 if (strcmp(arg, "-xwe") == 0) {
719 /* turn warnings into errors */
720 newae(ctx->i_ae, "-Werror");
721 continue;
722 }
723 if (strcmp(arg, "-noex") == 0) {
724 /* no exceptions */
725 newae(ctx->i_ae, "-fno-exceptions");
740 if (strcmp(arg, "-norunpath") == 0) {
741 /* gcc has no corresponding option */
742 continue;
743 }
744 if (strcmp(arg, "-nolib") == 0) {
745 /* -nodefaultlibs is on by default */
746 nolibc = 1;
747 continue;
748 }
749 #if defined(__sparc)
750 if (strcmp(arg, "-cg92") == 0) {
751 mflag |= xlate_xtb(ctx->i_ae, "v8");
752 xlate(ctx->i_ae, "super", xchip_tbl);
753 continue;
754 }
755 #endif /* __sparc */
756 }
757
758 switch ((c = arg[1])) {
759 case '_':
760 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
761 (strncmp(arg, "-_gcc=", 6) == 0) ||
762 (strncmp(arg, "-_gnu=", 6) == 0)) {
763 newae(ctx->i_ae, strchr(arg, '=') + 1);
764 }
765 break;
766 case '#':
767 if (arglen == 1) {
768 newae(ctx->i_ae, "-v");
769 break;
770 }
771 error(arg);
772 break;
773 case 'g':
774 newae(ctx->i_ae, "-gdwarf-2");
775 break;
776 case 'E':
777 if (arglen == 1) {
778 newae(ctx->i_ae, "-xc");
779 newae(ctx->i_ae, arg);
780 op = CW_O_PREPROCESS;
781 nolibc = 1;
782 break;
783 }
784 error(arg);
1386 char *s = strdup(arg);
1387 s[0] = '-';
1388 s[1] = 'I';
1389 newae(ctx->i_ae, "-nostdinc");
1390 newae(ctx->i_ae, s);
1391 free(s);
1392 break;
1393 }
1394 error(arg);
1395 break;
1396 case 'Q':
1397 /*
1398 * We could map -Qy into -Wl,-Qy etc.
1399 */
1400 default:
1401 error(arg);
1402 break;
1403 }
1404 }
1405
1406 free(nameflag);
1407
1408 if (c_files > 1 && (ctx->i_flags & CW_F_SHADOW) &&
1409 op != CW_O_PREPROCESS) {
1410 (void) errx(2, "multiple source files are "
1411 "allowed only with -E or -P");
1412 }
1413
1414 /*
1415 * Make sure that we do not have any unintended interactions between
1416 * the xarch options passed in and the version of the Studio compiler
1417 * used.
1418 */
1419 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1420 (void) errx(2,
1421 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1422 }
1423
1424 switch (mflag) {
1425 case 0:
1426 /* FALLTHROUGH */
1427 case M32:
1428 #if defined(__sparc)
1429 /*
1430 * Only -m32 is defined and so put in the missing xarch
1431 * translation.
1432 */
1433 newae(ctx->i_ae, "-mcpu=v8");
1434 newae(ctx->i_ae, "-mno-v8plus");
1435 #endif
1436 break;
1437 case M64:
1438 #if defined(__sparc)
1439 /*
1440 * Only -m64 is defined and so put in the missing xarch
1441 * translation.
1474 exit(2);
1475 }
1476 if (op == CW_O_LINK && (ctx->i_flags & CW_F_SHADOW))
1477 exit(0);
1478
1479 if (model && !pic)
1480 newae(ctx->i_ae, model);
1481 if (!nolibc)
1482 newae(ctx->i_ae, "-lc");
1483 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1484 newae(ctx->i_ae, "-o");
1485 newae(ctx->i_ae, ctx->i_discard);
1486 }
1487 }
1488
1489 static void
1490 do_cc(cw_ictx_t *ctx)
1491 {
1492 int in_output = 0, seen_o = 0;
1493 cw_op_t op = CW_O_LINK;
1494 char *nameflag;
1495
1496 if (ctx->i_flags & CW_F_PROG) {
1497 newae(ctx->i_ae, "-V");
1498 return;
1499 }
1500
1501 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->name) == -1)
1502 nomem();
1503
1504 while (--ctx->i_oldargc > 0) {
1505 char *arg = *++ctx->i_oldargv;
1506
1507 if (strncmp(arg, "-_CC=", 5) == 0) {
1508 newae(ctx->i_ae, strchr(arg, '=') + 1);
1509 continue;
1510 }
1511
1512 if (*arg != '-') {
1513 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1514 newae(ctx->i_ae, arg);
1515 } else {
1516 in_output = 0;
1517 newae(ctx->i_ae, ctx->i_discard);
1518 }
1519 continue;
1520 }
1521 switch (*(arg + 1)) {
1522 case '_':
1523 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1524 (strncmp(arg, "-_cc=", 5) == 0) ||
1525 (strncmp(arg, "-_sun=", 6) == 0)) {
1526 newae(ctx->i_ae, strchr(arg, '=') + 1);
1527 }
1528 break;
1529
1530 case 'V':
1531 ctx->i_flags &= ~CW_F_ECHO;
1532 newae(ctx->i_ae, arg);
1533 break;
1534 case 'o':
1535 seen_o = 1;
1536 if (strlen(arg) == 2) {
1537 in_output = 1;
1538 newae(ctx->i_ae, arg);
1539 } else if (ctx->i_flags & CW_F_SHADOW) {
1540 newae(ctx->i_ae, "-o");
1541 newae(ctx->i_ae, ctx->i_discard);
1542 } else {
1543 newae(ctx->i_ae, arg);
1544 }
1545 break;
1546 case 'c':
1547 case 'S':
1548 if (strlen(arg) == 2)
1549 op = CW_O_COMPILE;
1550 newae(ctx->i_ae, arg);
1551 break;
1552 case 'E':
1553 case 'P':
1554 if (strlen(arg) == 2)
1555 op = CW_O_PREPROCESS;
1556 /*FALLTHROUGH*/
1557 default:
1558 newae(ctx->i_ae, arg);
1559 }
1560 }
1561
1562 free(nameflag);
1563
1564 if ((op == CW_O_LINK || op == CW_O_PREPROCESS) &&
1565 (ctx->i_flags & CW_F_SHADOW))
1566 exit(0);
1567
1568 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1569 newae(ctx->i_ae, "-o");
1570 newae(ctx->i_ae, ctx->i_discard);
1571 }
1572 }
1573
1574 static void
1575 prepctx(cw_ictx_t *ctx)
1576 {
1577 newae(ctx->i_ae, ctx->i_compiler->path);
1578
1579 if (ctx->i_flags & CW_F_PROG) {
1580 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1581 "shadow" : "primary", ctx->i_compiler->path);
1582 (void) fflush(stdout);
1583 }
1584
1585 if (!(ctx->i_flags & CW_F_XLATE))
1586 return;
1587
1588 switch (ctx->i_compiler->style) {
1589 case SUN:
1590 do_cc(ctx);
1591 break;
1592 case GNU:
1593 do_gcc(ctx);
1594 break;
1595 }
1596 }
1597
1598 static int
1599 invoke(cw_ictx_t *ctx)
1600 {
1601 char **newargv;
1602 int ac;
1603 struct ae *a;
1604
1605 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1606 NULL)
1607 nomem();
1608
1609 if (ctx->i_flags & CW_F_ECHO)
1610 (void) fprintf(stderr, "+ ");
1611
1612 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1621 (void) fprintf(stderr, "\n");
1622 (void) fflush(stderr);
1623 }
1624
1625 if (!(ctx->i_flags & CW_F_EXEC))
1626 return (0);
1627
1628 /*
1629 * We must fix up the environment here so that the
1630 * dependency files are not trampled by the shadow compiler.
1631 */
1632 if ((ctx->i_flags & CW_F_SHADOW) &&
1633 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1634 unsetenv("DEPENDENCIES_OUTPUT") != 0)) {
1635 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1636 strerror(errno));
1637 return (-1);
1638 }
1639
1640 (void) execv(newargv[0], newargv);
1641 warn("couldn't run %s", newargv[0]);
1642
1643 return (-1);
1644 }
1645
1646 static int
1647 reap(cw_ictx_t *ctx)
1648 {
1649 int status, ret = 0;
1650 char buf[1024];
1651 struct stat s;
1652
1653 /*
1654 * Only wait for one specific child.
1655 */
1656 if (ctx->i_pid <= 0)
1657 return (-1);
1658
1659 do {
1660 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1661 warn("cannot reap child");
1662 return (-1);
1663 }
1664 if (status != 0) {
1665 if (WIFSIGNALED(status)) {
1666 ret = -WTERMSIG(status);
1667 break;
1668 } else if (WIFEXITED(status)) {
1669 ret = WEXITSTATUS(status);
1670 break;
1671 }
1672 }
1673 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1674
1675 (void) unlink(ctx->i_discard);
1676
1677 if (stat(ctx->i_stderr, &s) < 0) {
1678 warn("stat failed on child cleanup");
1679 return (-1);
1680 }
1681 if (s.st_size != 0) {
1682 FILE *f;
1683
1684 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1685 while (fgets(buf, sizeof (buf), f))
1686 (void) fprintf(stderr, "%s", buf);
1687 (void) fflush(stderr);
1688 (void) fclose(f);
1689 }
1690 }
1691 (void) unlink(ctx->i_stderr);
1692 free(ctx->i_stderr);
1693
1694 /*
1695 * cc returns an error code when given -V; we want that to succeed.
1696 */
1697 if (ctx->i_flags & CW_F_PROG)
1698 return (0);
1711 */
1712 if ((file = tempnam(NULL, ".cw")) == NULL) {
1713 nomem();
1714 return (-1);
1715 }
1716 (void) strlcpy(ctx->i_discard, file, MAXPATHLEN);
1717 (void) strlcat(ctx->i_discard, ".o", MAXPATHLEN);
1718 free(file);
1719
1720 if ((ctx->i_stderr = tempnam(NULL, ".cw")) == NULL) {
1721 nomem();
1722 return (-1);
1723 }
1724
1725 if ((ctx->i_pid = fork()) == 0) {
1726 int fd;
1727
1728 (void) fclose(stderr);
1729 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1730 0666)) < 0) {
1731 err(1, "open failed for standard error");
1732 }
1733 if (dup2(fd, 2) < 0) {
1734 err(1, "dup2 failed for standard error");
1735 }
1736 if (fd != 2)
1737 (void) close(fd);
1738 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1739 err(1, "freopen failed for /dev/fd/2");
1740 }
1741 prepctx(ctx);
1742 exit(invoke(ctx));
1743 }
1744
1745 if (ctx->i_pid < 0) {
1746 err(1, "fork failed");
1747 }
1748
1749 if (block)
1750 return (reap(ctx));
1751
1752 return (0);
1753 }
1754
1755 static int
1756 parse_compiler(const char *spec, cw_compiler_t *compiler)
1757 {
1758 char *tspec, *token;
1759
1760 if ((tspec = strdup(spec)) == NULL)
1761 err(1, "out of memory");
1762
1763 if ((token = strsep(&tspec, ",")) == NULL)
1764 errx(1, "Compiler is missing a name: %s", spec);
1765 compiler->name = token;
1766
1767 if ((token = strsep(&tspec, ",")) == NULL)
1768 errx(1, "Compiler is missing a path: %s", spec);
1769 compiler->path = token;
1770
1771 if ((token = strsep(&tspec, ",")) == NULL)
1772 errx(1, "Compiler is missing a style: %s", spec);
1773
1774 if ((strcasecmp(token, "gnu") == 0) ||
1775 (strcasecmp(token, "gcc") == 0))
1776 compiler->style = GNU;
1777 else if ((strcasecmp(token, "sun") == 0) ||
1778 (strcasecmp(token, "cc") == 0))
1779 compiler->style = SUN;
1780 else
1781 errx(1, "unknown compiler style: %s", token);
1782
1783 if (tspec != NULL)
1784 errx(1, "Excess tokens in compiler: %s", spec);
1785
1786 return (0);
1787 }
1788
1789 int
1790 main(int argc, char **argv)
1791 {
1792 int ch;
1793 cw_compiler_t primary = { NULL, NULL, 0 };
1794 cw_compiler_t shadows[10];
1795 int nshadows = 0;
1796 int ret = 0;
1797 boolean_t do_serial = B_FALSE;
1798 boolean_t do_exec = B_FALSE;
1799 boolean_t vflg = B_FALSE;
1800 boolean_t Cflg = B_FALSE;
1801 boolean_t cflg = B_FALSE;
1802 boolean_t nflg = B_FALSE;
1803
1804 cw_ictx_t *main_ctx = newictx();
1805
1806 static struct option longopts[] = {
1807 { "compiler", no_argument, NULL, 'c' },
1808 { "noecho", no_argument, NULL ,'n' },
1809 { "primary", required_argument, NULL, 'p' },
1810 { "shadow", required_argument, NULL, 's' },
1811 { "versions", no_argument, NULL, 'v' },
1812 { NULL, 0, NULL, 0 },
1813 };
1814
1815 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1816 switch (ch) {
1817 case 'c':
1818 cflg = B_TRUE;
1819 break;
1820 case 'C':
1821 Cflg = B_TRUE;
1822 break;
1823 case 'n':
1824 nflg = B_TRUE;
1825 break;
1826 case 'p':
1827 if (primary.path != NULL) {
1828 warnx("Only one primary compiler may be specified");
1829 usage();
1830 }
1831
1832 if (parse_compiler(optarg, &primary) != 0)
1833 errx(1, "Couldn't parse %s as a compiler spec", optarg);
1834 break;
1835 case 's':
1836 if (nshadows >= 10)
1837 errx(1, "May only use 10 shadows at the moment");
1838 if (parse_compiler(optarg, &shadows[nshadows]) != 0)
1839 errx(1, "Couldn't parse %s as a compiler spec", optarg);
1840 nshadows++;
1841 break;
1842 case 'v':
1843 vflg = B_TRUE;
1844 break;
1845 default:
1846 fprintf(stderr, "Did you forget '--'?\n");
1847 usage();
1848 }
1849 }
1850
1851 if (primary.path == NULL) {
1852 warnx("A primary compiler must be specified");
1853 usage();
1854 }
1855
1856 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1857 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1858
1859 /* Leave room for argv[0] */
1860 argc -= (optind - 1);
1861 argv += (optind - 1);
1862
1863 if (main_ctx == NULL)
1864 nomem();
1865
1866 main_ctx->i_oldargc = argc;
1867 main_ctx->i_oldargv = argv;
1868 main_ctx->i_flags = CW_F_XLATE;
1869 if (nflg == 0)
1870 main_ctx->i_flags |= CW_F_ECHO;
1871 if (do_exec)
1872 main_ctx->i_flags |= CW_F_EXEC;
1873 if (Cflg)
1874 main_ctx->i_flags |= CW_F_CXX;
1875 main_ctx->i_compiler = &primary;
1876
1877 if (cflg) {
1878 fputs(primary.path, stdout);
1879 }
1880
1881 if (vflg) {
1882 (void) printf("cw version %s\n", CW_VERSION);
1883 (void) fflush(stdout);
1884 main_ctx->i_flags &= ~CW_F_ECHO;
1885 main_ctx->i_flags |= CW_F_PROG|CW_F_EXEC;
1886 do_serial = 1;
1887 }
1888
1889 ret |= exec_ctx(main_ctx, do_serial);
1890
1891 for (int i = 0; i < nshadows; i++) {
1892 cw_ictx_t *shadow_ctx = newictx();
1893
1894 if (shadow_ctx == NULL)
1895 nomem();
1896
1897 memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1898
1899 shadow_ctx->i_flags |= CW_F_SHADOW;
1900 shadow_ctx->i_compiler = &shadows[i];
1901
1902 /* XXX: Would be nice to run these parallel, too */
1903 ret |= exec_ctx(shadow_ctx, 1);
1904 }
1905
1906 if (!do_serial)
1907 ret |= reap(main_ctx);
1908
1909 return (ret);
1910 }
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