make.h@ 803

Last change on this file since 803 was 803, checked in by bird, 18 years ago
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1	/* Miscellaneous global declarations and portability cruft for GNU Make.
2	Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3	1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
4	Foundation, Inc.
5	This file is part of GNU Make.
6
7	GNU Make is free software; you can redistribute it and/or modify it under the
8	terms of the GNU General Public License as published by the Free Software
9	Foundation; either version 2, or (at your option) any later version.
10
11	GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
12	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13	A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14
15	You should have received a copy of the GNU General Public License along with
16	GNU Make; see the file COPYING. If not, write to the Free Software
17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */
18
19	/* We use <config.h> instead of "config.h" so that a compilation
20	using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
21	(which it would do because make.h was found in $srcdir). */
22	#include <config.h>
23	#undef HAVE_CONFIG_H
24	#define HAVE_CONFIG_H 1
25
26	/* AIX requires this to be the first thing in the file. */
27	#ifndef __GNUC__
28	# if HAVE_ALLOCA_H
29	# include <alloca.h>
30	# else
31	# ifdef _AIX
32	#pragma alloca
33	# else
34	# ifndef alloca /* predefined by HP cc +Olibcalls */
35	char *alloca ();
36	# endif
37	# endif
38	# endif
39	#endif
40
41
42	/* Use prototypes if available. */
43	#if defined (__cplusplus) \|\| defined (__STDC__) \|\| defined WINDOWS32 /* bird: protos on windows */
44	# undef PARAMS
45	# define PARAMS(protos) protos
46	#else /* Not C++ or ANSI C. */
47	# undef PARAMS
48	# define PARAMS(protos) ()
49	#endif /* C++ or ANSI C. */
50
51	/* Specify we want GNU source code. This must be defined before any
52	system headers are included. */
53
54	#define _GNU_SOURCE 1
55
56
57	#ifdef CRAY
58	/* This must happen before #include <signal.h> so
59	that the declaration therein is changed. */
60	# define signal bsdsignal
61	#endif
62
63	/* If we're compiling for the dmalloc debugger, turn off string inlining. */
64	#if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
65	# define __NO_STRING_INLINES
66	#endif
67
68	#include <sys/types.h>
69	#include <sys/stat.h>
70	#include <signal.h>
71	#include <stdio.h>
72	#include <ctype.h>
73	#ifdef HAVE_SYS_TIMEB_H
74	/* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
75	unless <sys/timeb.h> has been included first. Does every system have a
76	<sys/timeb.h>? If any does not, configure should check for it. */
77	# include <sys/timeb.h>
78	#endif
79
80	#if TIME_WITH_SYS_TIME
81	# include <sys/time.h>
82	# include <time.h>
83	#else
84	# if HAVE_SYS_TIME_H
85	# include <sys/time.h>
86	# else
87	# include <time.h>
88	# endif
89	#endif
90
91	#include <errno.h>
92
93	#ifndef errno
94	extern int errno;
95	#endif
96
97	#ifndef isblank
98	# define isblank(c) ((c) == ' ' \|\| (c) == '\t')
99	#endif
100
101	#ifdef HAVE_UNISTD_H
102	# include <unistd.h>
103	/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
104	POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */
105	# if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
106	# define POSIX 1
107	# endif
108	#endif
109
110	/* Some systems define _POSIX_VERSION but are not really POSIX.1. */
111	#if (defined (butterfly) \|\| defined (__arm) \|\| (defined (__mips) && defined (_SYSTYPE_SVR3)) \|\| (defined (sequent) && defined (i386)))
112	# undef POSIX
113	#endif
114
115	#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
116	# define POSIX 1
117	#endif
118
119	#ifndef RETSIGTYPE
120	# define RETSIGTYPE void
121	#endif
122
123	#ifndef sigmask
124	# define sigmask(sig) (1 << ((sig) - 1))
125	#endif
126
127	#ifndef HAVE_SA_RESTART
128	# define SA_RESTART 0
129	#endif
130
131	#ifdef HAVE_LIMITS_H
132	# include <limits.h>
133	#endif
134	#ifdef HAVE_SYS_PARAM_H
135	# include <sys/param.h>
136	#endif
137
138	#ifndef PATH_MAX
139	# ifndef POSIX
140	# define PATH_MAX MAXPATHLEN
141	# endif
142	#endif
143	#ifndef MAXPATHLEN
144	# define MAXPATHLEN 1024
145	#endif
146
147	#ifdef PATH_MAX
148	# define GET_PATH_MAX PATH_MAX
149	# define PATH_VAR(var) char var[PATH_MAX]
150	#else
151	# define NEED_GET_PATH_MAX 1
152	# define GET_PATH_MAX (get_path_max ())
153	# define PATH_VAR(var) char var = (char ) alloca (GET_PATH_MAX)
154	extern unsigned int get_path_max PARAMS ((void));
155	#endif
156
157	#ifndef CHAR_BIT
158	# define CHAR_BIT 8
159	#endif
160
161	/* Nonzero if the integer type T is signed. */
162	#define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
163
164	/* The minimum and maximum values for the integer type T.
165	Use ~ (t) 0, not -1, for portability to 1's complement hosts. */
166	#define INTEGER_TYPE_MINIMUM(t) \
167	(! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
168	#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
169
170	#ifndef CHAR_MAX
171	# define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
172	#endif
173
174	#ifdef STAT_MACROS_BROKEN
175	# ifdef S_ISREG
176	# undef S_ISREG
177	# endif
178	# ifdef S_ISDIR
179	# undef S_ISDIR
180	# endif
181	#endif /* STAT_MACROS_BROKEN. */
182
183	#ifndef S_ISREG
184	# define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
185	#endif
186	#ifndef S_ISDIR
187	# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
188	#endif
189
190	#ifdef VMS
191	# include <types.h>
192	# include <unixlib.h>
193	# include <unixio.h>
194	# include <perror.h>
195	/* Needed to use alloca on VMS. */
196	# include <builtins.h>
197	#endif
198
199	#ifndef __attribute__
200	/* This feature is available in gcc versions 2.5 and later. */
201	# if __GNUC__ < 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ < 5) \|\| __STRICT_ANSI__
202	# define __attribute__(x)
203	# endif
204	/* The __-protected variants of `format' and `printf' attributes
205	are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
206	# if __GNUC__ < 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
207	# define __format__ format
208	# define __printf__ printf
209	# endif
210	#endif
211	#define UNUSED __attribute__ ((unused))
212
213	#if defined (STDC_HEADERS) \|\| defined (__GNU_LIBRARY__)
214	# include <stdlib.h>
215	# include <string.h>
216	# define ANSI_STRING 1
217	#else /* No standard headers. */
218	# ifdef HAVE_STRING_H
219	# include <string.h>
220	# define ANSI_STRING 1
221	# else
222	# include <strings.h>
223	# endif
224	# ifdef HAVE_MEMORY_H
225	# include <memory.h>
226	# endif
227	# ifdef HAVE_STDLIB_H
228	# include <stdlib.h>
229	# else
230	extern char *malloc PARAMS ((int));
231	extern char realloc PARAMS ((char , int));
232	extern void free PARAMS ((char *));
233
234	extern void abort PARAMS ((void)) __attribute__ ((noreturn));
235	extern void exit PARAMS ((int)) __attribute__ ((noreturn));
236	# endif /* HAVE_STDLIB_H. */
237
238	#endif /* Standard headers. */
239
240	/* These should be in stdlib.h. Make sure we have them. */
241	#ifndef EXIT_SUCCESS
242	# define EXIT_SUCCESS 0
243	#endif
244	#ifndef EXIT_FAILURE
245	# define EXIT_FAILURE 0
246	#endif
247
248	#ifdef ANSI_STRING
249
250	# ifndef bcmp
251	# define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
252	# endif
253	# ifndef bzero
254	# define bzero(s, n) memset ((s), 0, (n))
255	# endif
256	# if defined(HAVE_MEMMOVE) && !defined(bcopy)
257	# define bcopy(s, d, n) memmove ((d), (s), (n))
258	# endif
259
260	#else /* Not ANSI_STRING. */
261
262	# ifndef HAVE_STRCHR
263	# define strchr(s, c) index((s), (c))
264	# define strrchr(s, c) rindex((s), (c))
265	# endif
266
267	# ifndef bcmp
268	extern int bcmp PARAMS ((const char , const char , int));
269	# endif
270	# ifndef bzero
271	extern void bzero PARAMS ((char *, int));
272	#endif
273	# ifndef bcopy
274	extern void bcopy PARAMS ((const char b1, char b2, int));
275	# endif
276
277	/* SCO Xenix has a buggy macro definition in <string.h>. */
278	#undef strerror
279	#if !defined(__DECC)
280	extern char *strerror PARAMS ((int errnum));
281	#endif
282
283	#endif /* !ANSI_STRING. */
284	#undef ANSI_STRING
285
286	#if HAVE_INTTYPES_H
287	# include <inttypes.h>
288	#endif
289	#define FILE_TIMESTAMP uintmax_t
290
291	#if !defined(HAVE_STRSIGNAL)
292	extern char *strsignal PARAMS ((int signum));
293	#endif
294
295	/* ISDIGIT offers the following features:
296	- Its arg may be any int or unsigned int; it need not be an unsigned char.
297	- It's guaranteed to evaluate its argument exactly once.
298	NOTE! Make relies on this behavior, don't change it!
299	- It's typically faster.
300	POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
301	only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless
302	it's important to use the locale's definition of `digit' even when the
303	host does not conform to POSIX. */
304	#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
305
306	#ifndef iAPX286
307	# define streq(a, b) \
308	((a) == (b) \|\| \
309	((a) == (b) && (*(a) == '\0' \|\| !strcmp ((a) + 1, (b) + 1))))
310	# ifdef HAVE_CASE_INSENSITIVE_FS
311	/* This is only used on Windows/DOS platforms, so we assume strcmpi(). */
312	# define strieq(a, b) \
313	((a) == (b) \
314	\|\| (tolower((unsigned char)(a)) == tolower((unsigned char)(b)) \
315	&& (*(a) == '\0' \|\| !strcmpi ((a) + 1, (b) + 1))))
316	# else
317	# define strieq(a, b) streq(a, b)
318	# endif
319	#else
320	/* Buggy compiler can't handle this. */
321	# define streq(a, b) (strcmp ((a), (b)) == 0)
322	# define strieq(a, b) (strcmp ((a), (b)) == 0)
323	#endif
324	#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
325	#ifdef VMS
326	extern int strcmpi (const char ,const char );
327	#endif
328
329	#if defined(__GNUC__) \|\| defined(ENUM_BITFIELDS)
330	# define ENUM_BITFIELD(bits) :bits
331	#else
332	# define ENUM_BITFIELD(bits)
333	#endif
334
335	/* Handle gettext and locales. */
336
337	#if HAVE_LOCALE_H
338	# include <locale.h>
339	#else
340	# define setlocale(category, locale)
341	#endif
342
343	#include <gettext.h>
344
345	#define _(msgid) gettext (msgid)
346	#define N_(msgid) gettext_noop (msgid)
347	#define S_(msg1,msg2,num) ngettext (msg1,msg2,num)
348
349	/* Handle other OSs. */
350	#if defined(HAVE_DOS_PATHS)
351	# define PATH_SEPARATOR_CHAR ';'
352	#elif defined(VMS)
353	# define PATH_SEPARATOR_CHAR ','
354	#else
355	# define PATH_SEPARATOR_CHAR ':'
356	#endif
357
358	/* This is needed for getcwd() and chdir(). */
359	#if defined(_MSC_VER) \|\| defined(__BORLANDC__)
360	# include <direct.h>
361	#endif
362
363	#ifdef WINDOWS32
364	# include <fcntl.h>
365	# include <malloc.h>
366	# define pipe(p) _pipe(p, 512, O_BINARY)
367	# define kill(pid,sig) w32_kill(pid,sig)
368
369	extern void sync_Path_environment(void);
370	extern int kill(int pid, int sig);
371	extern char end_of_token_w32(char s, char stopchar);
372	extern int find_and_set_default_shell(char *token);
373
374	/* indicates whether or not we have Bourne shell */
375	extern int no_default_sh_exe;
376
377	/* is default_shell unixy? */
378	extern int unixy_shell;
379	#endif /* WINDOWS32 */
380
381	struct floc
382	{
383	const char *filenm;
384	unsigned long lineno;
385	};
386	#define NILF ((struct floc *)0)
387
388	#define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1)
389
390
391
392	/* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use
393	variadic versions of these functions. */
394
395	#if HAVE_STDARG_H \|\| HAVE_VARARGS_H
396	# if HAVE_VPRINTF \|\| HAVE_DOPRNT
397	# define USE_VARIADIC 1
398	# endif
399	#endif
400
401	#if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H
402	extern void message (int prefix, const char *fmt, ...)
403	__attribute__ ((__format__ (__printf__, 2, 3)));
404	extern void error (const struct floc flocp, const char fmt, ...)
405	__attribute__ ((__format__ (__printf__, 2, 3)));
406	extern void fatal (const struct floc flocp, const char fmt, ...)
407	__attribute__ ((noreturn, __format__ (__printf__, 2, 3)));
408	#else
409	extern void message ();
410	extern void error ();
411	extern void fatal ();
412	#endif
413
414	extern void die PARAMS ((int)) __attribute__ ((noreturn));
415	extern void log_working_directory PARAMS ((int));
416	extern void pfatal_with_name PARAMS ((const char *)) __attribute__ ((noreturn));
417	extern void perror_with_name PARAMS ((const char , const char ));
418	extern char savestring PARAMS ((const char , unsigned int));
419	extern char concat PARAMS ((const char , const char , const char ));
420	extern char *xmalloc PARAMS ((unsigned int));
421	extern char xrealloc PARAMS ((char , unsigned int));
422	extern char xstrdup PARAMS ((const char ));
423	extern char find_next_token PARAMS ((char , unsigned int ));
424	extern char next_token PARAMS ((const char ));
425	extern char end_of_token PARAMS ((const char ));
426	extern void collapse_continuations PARAMS ((char *));
427	#ifdef CONFIG_WITH_OPTIMIZATION_HACKS /* memchr is usually compiler intrinsic, thus faster. */
428	#define lindex(s, limit, c) ((char *)memchr((s), (c), (limit) - (s)))
429	#else
430	extern char lindex PARAMS ((const char , const char *, int));
431	#endif
432	extern int alpha_compare PARAMS ((const void , const void ));
433	extern void print_spaces PARAMS ((unsigned int));
434	extern char find_percent PARAMS ((char ));
435	extern FILE open_tmpfile PARAMS ((char , const char ));
436
437	#ifndef NO_ARCHIVES
438	extern int ar_name PARAMS ((char *));
439	extern void ar_parse_name PARAMS ((char , char , char *));
440	extern int ar_touch PARAMS ((char *));
441	extern time_t ar_member_date PARAMS ((char *));
442	#endif
443
444	extern int dir_file_exists_p PARAMS ((char , char ));
445	extern int file_exists_p PARAMS ((char *));
446	extern int file_impossible_p PARAMS ((char *));
447	extern void file_impossible PARAMS ((char *));
448	extern char dir_name PARAMS ((char ));
449	extern void hash_init_directories PARAMS ((void));
450
451	extern void define_default_variables PARAMS ((void));
452	extern void set_default_suffixes PARAMS ((void));
453	extern void install_default_suffix_rules PARAMS ((void));
454	extern void install_default_implicit_rules PARAMS ((void));
455
456	extern void build_vpath_lists PARAMS ((void));
457	extern void construct_vpath_list PARAMS ((char pattern, char dirpath));
458	extern int vpath_search PARAMS ((char *file, FILE_TIMESTAMP mtime_ptr));
459	extern int gpath_search PARAMS ((char *file, unsigned int len));
460
461	extern void construct_include_path PARAMS ((char **arg_dirs));
462
463	extern void user_access PARAMS ((void));
464	extern void make_access PARAMS ((void));
465	extern void child_access PARAMS ((void));
466
467	extern void close_stdout PARAMS ((void));
468
469	extern char strip_whitespace PARAMS ((const char begpp, const char *endpp));
470
471	/* String caching */
472	extern void strcache_init PARAMS ((void));
473	extern void strcache_print_stats PARAMS ((const char *prefix));
474	extern int strcache_iscached PARAMS ((const char *str));
475	extern const char strcache_add PARAMS ((const char str));
476	extern const char strcache_add_len PARAMS ((const char str, int len));
477	extern int strcache_setbufsize PARAMS ((int size));
478
479	#ifdef HAVE_VFORK_H
480	# include <vfork.h>
481	#endif
482
483	/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
484	because such systems often declare them in header files anyway. */
485
486	#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
487
488	extern long int atol ();
489	# ifndef VMS
490	extern long int lseek ();
491	# endif
492
493	#endif /* Not GNU C library or POSIX. */
494
495	#ifdef HAVE_GETCWD
496	# if !defined(VMS) && !defined(__DECC) && !defined(_MSC_VER)
497	extern char *getcwd ();
498	# endif
499	#else
500	extern char *getwd ();
501	# define getcwd(buf, len) getwd (buf)
502	#endif
503
504	extern const struct floc *reading_file;
505	extern const struct floc **expanding_var;
506
507	#if !defined(_MSC_VER)
508	extern char **environ;
509	#endif
510
511	extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
512	extern int print_data_base_flag, question_flag, touch_flag, always_make_flag;
513	extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
514	extern int print_version_flag, print_directory_flag, check_symlink_flag;
515	extern int warn_undefined_variables_flag, posix_pedantic, not_parallel;
516	extern int second_expansion, clock_skew_detected, rebuilding_makefiles;
517	#ifdef CONFIG_PRETTY_COMMAND_PRINTING
518	extern int pretty_command_printing;
519	#endif
520
521	/* can we run commands via 'sh -c xxx' or must we use batch files? */
522	extern int batch_mode_shell;
523
524	extern unsigned int job_slots;
525	extern int job_fds[2];
526	extern int job_rfd;
527	#ifndef NO_FLOAT
528	extern double max_load_average;
529	#else
530	extern int max_load_average;
531	#endif
532
533	extern char *program;
534	extern char *starting_directory;
535	extern unsigned int makelevel;
536	extern char version_string, remote_description, *make_host;
537
538	extern unsigned int commands_started;
539
540	extern int handling_fatal_signal;
541
542
543	#ifndef MIN
544	#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
545	#endif
546	#ifndef MAX
547	#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
548	#endif
549
550	#ifdef VMS
551	# define MAKE_SUCCESS 1
552	# define MAKE_TROUBLE 2
553	# define MAKE_FAILURE 3
554	#else
555	# define MAKE_SUCCESS 0
556	# define MAKE_TROUBLE 1
557	# define MAKE_FAILURE 2
558	#endif
559
560	/* Set up heap debugging library dmalloc. */
561
562	#ifdef HAVE_DMALLOC_H
563	#include <dmalloc.h>
564	#endif
565
566	#ifndef initialize_main
567	# ifdef __EMX__
568	# define initialize_main(pargc, pargv) \
569	{ _wildcard(pargc, pargv); _response(pargc, pargv); }
570	# else
571	# define initialize_main(pargc, pargv)
572	# endif
573	#endif
574
575
576	#ifdef __EMX__
577	# if !HAVE_STRCASECMP
578	# define strcasecmp stricmp
579	# endif
580
581	# if !defined chdir
582	# define chdir _chdir2
583	# endif
584	# if !defined getcwd
585	# define getcwd _getcwd2
586	# endif
587
588	/* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
589	chdir() and getcwd(). This avoids some error messages for the
590	make testsuite but restricts the drive letter support. */
591	# ifdef NO_CHDIR2
592	# warning NO_CHDIR2: usage of drive letters restricted
593	# undef chdir
594	# undef getcwd
595	# endif
596	#endif
597
598	#ifndef initialize_main
599	# define initialize_main(pargc, pargv)
600	#endif
601
602
603	/* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
604	properly according to POSIX. So, we try to wrap common system calls with
605	checks for EINTR. Note that there are still plenty of system calls that
606	can fail with EINTR but this, reportedly, gets the vast majority of
607	failure cases. If you still experience failures you'll need to either get
608	a system where SA_RESTART works, or you need to avoid -j. */
609
610	#define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR)
611
612	/* While system calls that return integers are pretty consistent about
613	returning -1 on failure and setting errno in that case, functions that
614	return pointers are not always so well behaved. Sometimes they return
615	NULL for expected behavior: one good example is readdir() which returns
616	NULL at the end of the directory--and _doesn't_ reset errno. So, we have
617	to do it ourselves here. */
618
619	#define ENULLLOOP(_v,_c) do{ errno = 0; \
620	while (((_v)=_c)==0 && errno==EINTR); }while(0)
621
622	#if defined(__EMX__) && defined(CONFIG_WITH_OPTIMIZATION_HACKS) /* bird: saves 40-100ms on libc. */
623	static inline void __my_rawmemchr (const void __s, int __c);
624	#undef strchr
625	#define strchr(s, c) \
626	(__extension__ (__builtin_constant_p (c) \
627	? ((c) == '\0' \
628	? (char *) __my_rawmemchr ((s), (c)) \
629	: __my_strchr_c ((s), ((c) & 0xff) << 8)) \
630	: __my_strchr_g ((s), (c))))
631	static inline char __my_strchr_c (const char __s, int __c)
632	{
633	register unsigned long int __d0;
634	register char *__res;
635	__asm__ __volatile__
636	("1:\n\t"
637	"movb (%0),%%al\n\t"
638	"cmpb %%ah,%%al\n\t"
639	"je 2f\n\t"
640	"leal 1(%0),%0\n\t"
641	"testb %%al,%%al\n\t"
642	"jne 1b\n\t"
643	"xorl %0,%0\n"
644	"2:"
645	: "=r" (__res), "=&a" (__d0)
646	: "0" (__s), "1" (__c),
647	"m" ( (struct { char __x[0xfffffff]; } )__s)
648	: "cc");
649	return __res;
650	}
651
652	static inline char __my_strchr_g (__const char __s, int __c)
653	{
654	register unsigned long int __d0;
655	register char *__res;
656	__asm__ __volatile__
657	("movb %%al,%%ah\n"
658	"1:\n\t"
659	"movb (%0),%%al\n\t"
660	"cmpb %%ah,%%al\n\t"
661	"je 2f\n\t"
662	"leal 1(%0),%0\n\t"
663	"testb %%al,%%al\n\t"
664	"jne 1b\n\t"
665	"xorl %0,%0\n"
666	"2:"
667	: "=r" (__res), "=&a" (__d0)
668	: "0" (__s), "1" (__c),
669	"m" ( (struct { char __x[0xfffffff]; } )__s)
670	: "cc");
671	return __res;
672	}
673
674	static inline void __my_rawmemchr (const void __s, int __c)
675	{
676	register unsigned long int __d0;
677	register unsigned char *__res;
678	__asm__ __volatile__
679	("cld\n\t"
680	"repne; scasb\n\t"
681	: "=D" (__res), "=&c" (__d0)
682	: "a" (__c), "0" (__s), "1" (0xffffffff),
683	"m" ( (struct { char __x[0xfffffff]; } )__s)
684	: "cc");
685	return __res - 1;
686	}
687
688	#undef memchr
689	#define memchr(a,b,c) __my_memchr((a),(b),(c))
690	static inline void __my_memchr (__const void __s, int __c, size_t __n)
691	{
692	register unsigned long int __d0;
693	register unsigned char *__res;
694	if (__n == 0)
695	return NULL;
696	__asm__ __volatile__
697	("repne; scasb\n\t"
698	"je 1f\n\t"
699	"movl $1,%0\n"
700	"1:"
701	: "=D" (__res), "=&c" (__d0)
702	: "a" (__c), "0" (__s), "1" (__n),
703	"m" ( (struct { __extension__ char __x[__n]; } )__s)
704	: "cc");
705	return __res - 1;
706	}
707
708	#endif /* __EMX__ (bird) */

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source: kBuild/trunk/src/gmake/make.h@ 803

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