stdlib.h

   1 /* Minimal - the simplest thing that could possibly work
   2  * Copyright (C) 2007  Jay Freeman (saurik)
   3 */
   4
   5 /*
   6  *        Redistribution and use in source and binary
   7  * forms, with or without modification, are permitted
   8  * provided that the following conditions are met:
   9  *
  10  * 1. Redistributions of source code must retain the
  11  *    above copyright notice, this list of conditions
  12  *    and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the
  14  *    above copyright notice, this list of conditions
  15  *    and the following disclaimer in the documentation
  16  *    and/or other materials provided with the
  17  *    distribution.
  18  * 3. The name of the author may not be used to endorse
  19  *    or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  24  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  28  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  32  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  33  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  34  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  35  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36 */
  37
  38 #ifndef MINIMAL_STDLIB_H
  39 #define MINIMAL_STDLIB_H
  40
  41 #ifdef __i386__
  42 #define _breakpoint() \
  43     __asm__ ("int $0x03")
  44 #else
  45 #define _breakpoint()
  46 #endif
  47
  48 #ifdef __cplusplus
  49 #define _assert_(e) \
  50     throw e
  51 #else
  52 #define _assert_(e) \
  53     exit(1)
  54 #endif
  55
  56 #define _assert(expr) \
  57     do if (!(expr)) { \
  58         fprintf(stderr, "%s(%u): _assert(%u:%s)\n", __FILE__, __LINE__, errno, #expr); \
  59         _breakpoint(); \
  60         _assert_(#expr); \
  61     } while (false)
  62
  63 #define _syscall(expr) \
  64     do if ((long) (expr) != -1) \
  65         break; \
  66     else switch (errno) { \
  67         case EINTR: \
  68             continue; \
  69         default: \
  70             _assert(false); \
  71     } while (true)
  72
  73 #define _forever \
  74     for (;;)
  75
  76 #define _trace() \
  77     printf("_trace(%s:%u): %s\n", __FILE__, __LINE__, __FUNCTION__)
  78
  79 #define _not(type) \
  80     ((type) ~ (type) 0)
  81
  82 #define _disused \
  83     __attribute__((unused))
  84
  85 #define _label__(x) _label ## x
  86 #define _label_(y) _label__(y)
  87 #define _label _label_(__LINE__)
  88
  89 #define _packed \
  90     __attribute__((packed))
  91
  92 #ifdef __cplusplus
  93
  94 template <typename Type_>
  95 struct Iterator_ {
  96     typedef typename Type_::const_iterator Result;
  97 };
  98
  99 #define _foreach(item, list) \
 100     for (bool _stop(true); _stop; ) \
 101         for (const __typeof__(list) &_list = (list); _stop; _stop = false) \
 102             for (Iterator_<__typeof__(list)>::Result item = _list.begin(); item != _list.end(); ++item)
 103
 104 #endif
 105
 106 #include <errno.h>
 107 #include <stdio.h>
 108 #include <stdbool.h>
 109 #include <stdlib.h>
 110 #include <stdint.h>
 111
 112 #endif/*MINIMAL_STDLIB_H*/