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      1 /* This is an example of a header file for platforms/compilers that do
      2  * not come with stdint.h/stddef.h/stdbool.h/string.h. To use it, define
      3  * PB_SYSTEM_HEADER as "pb_syshdr.h", including the quotes, and add the
      4  * extra folder to your include path.
      5  *
      6  * It is very likely that you will need to customize this file to suit
      7  * your platform. For any compiler that supports C99, this file should
      8  * not be necessary.
      9  */
     10 
     11 #ifndef _PB_SYSHDR_H_
     12 #define _PB_SYSHDR_H_
     13 
     14 /* stdint.h subset */
     15 #ifdef HAVE_STDINT_H
     16 #include <stdint.h>
     17 #else
     18 /* You will need to modify these to match the word size of your platform. */
     19 typedef signed char int8_t;
     20 typedef unsigned char uint8_t;
     21 typedef signed short int16_t;
     22 typedef unsigned short uint16_t;
     23 typedef signed int int32_t;
     24 typedef unsigned int uint32_t;
     25 typedef signed long long int64_t;
     26 typedef unsigned long long uint64_t;
     27 
     28 /* These are ok for most platforms, unless uint8_t is actually not available,
     29  * in which case you should give the smallest available type. */
     30 typedef int8_t int_least8_t;
     31 typedef uint8_t uint_least8_t;
     32 typedef uint8_t uint_fast8_t;
     33 typedef int16_t int_least16_t;
     34 typedef uint16_t uint_least16_t;
     35 #endif
     36 
     37 /* stddef.h subset */
     38 #ifdef HAVE_STDDEF_H
     39 #include <stddef.h>
     40 #else
     41 
     42 typedef uint32_t size_t;
     43 #define offsetof(st, m) ((size_t)(&((st *)0)->m))
     44 
     45 #ifndef NULL
     46 #define NULL 0
     47 #endif
     48 
     49 #endif
     50 
     51 /* stdbool.h subset */
     52 #ifdef HAVE_STDBOOL_H
     53 #include <stdbool.h>
     54 #else
     55 
     56 #ifndef __cplusplus
     57 typedef int bool;
     58 #define false 0
     59 #define true 1
     60 #endif
     61 
     62 #endif
     63 
     64 /* stdlib.h subset */
     65 #ifdef PB_ENABLE_MALLOC
     66 #ifdef HAVE_STDLIB_H
     67 #include <stdlib.h>
     68 #else
     69 void *realloc(void *ptr, size_t size);
     70 void free(void *ptr);
     71 #endif
     72 #endif
     73 
     74 /* string.h subset */
     75 #ifdef HAVE_STRING_H
     76 #include <string.h>
     77 #else
     78 
     79 /* Implementations are from the Public Domain C Library (PDCLib). */
     80 static size_t strlen( const char * s )
     81 {
     82     size_t rc = 0;
     83     while ( s[rc] )
     84     {
     85         ++rc;
     86     }
     87     return rc;
     88 }
     89 
     90 static void * memcpy( void *s1, const void *s2, size_t n )
     91 {
     92     char * dest = (char *) s1;
     93     const char * src = (const char *) s2;
     94     while ( n-- )
     95     {
     96         *dest++ = *src++;
     97     }
     98     return s1;
     99 }
    100 
    101 static void * memset( void * s, int c, size_t n )
    102 {
    103     unsigned char * p = (unsigned char *) s;
    104     while ( n-- )
    105     {
    106         *p++ = (unsigned char) c;
    107     }
    108     return s;
    109 }
    110 #endif
    111 
    112 #endif
    113