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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 #endif
     28 
     29 /* stddef.h subset */
     30 #ifdef HAVE_STDDEF_H
     31 #include <stddef.h>
     32 #else
     33 
     34 typedef uint32_t size_t;
     35 #define offsetof(st, m) ((size_t)(&((st *)0)->m))
     36 
     37 #ifndef NULL
     38 #define NULL 0
     39 #endif
     40 
     41 #endif
     42 
     43 /* stdbool.h subset */
     44 #ifdef HAVE_STDBOOL_H
     45 #include <stdbool.h>
     46 #else
     47 
     48 #ifndef __cplusplus
     49 typedef int bool;
     50 #define false 0
     51 #define true 1
     52 #endif
     53 
     54 #endif
     55 
     56 /* stdlib.h subset */
     57 #ifdef PB_ENABLE_MALLOC
     58 #ifdef HAVE_STDLIB_H
     59 #include <stdlib.h>
     60 #else
     61 void *realloc(void *ptr, size_t size);
     62 void free(void *ptr);
     63 #endif
     64 #endif
     65 
     66 /* string.h subset */
     67 #ifdef HAVE_STRING_H
     68 #include <string.h>
     69 #else
     70 
     71 /* Implementations are from the Public Domain C Library (PDCLib). */
     72 static size_t strlen( const char * s )
     73 {
     74     size_t rc = 0;
     75     while ( s[rc] )
     76     {
     77         ++rc;
     78     }
     79     return rc;
     80 }
     81 
     82 static void * memcpy( void *s1, const void *s2, size_t n )
     83 {
     84     char * dest = (char *) s1;
     85     const char * src = (const char *) s2;
     86     while ( n-- )
     87     {
     88         *dest++ = *src++;
     89     }
     90     return s1;
     91 }
     92 
     93 static void * memset( void * s, int c, size_t n )
     94 {
     95     unsigned char * p = (unsigned char *) s;
     96     while ( n-- )
     97     {
     98         *p++ = (unsigned char) c;
     99     }
    100     return s;
    101 }
    102 #endif
    103 
    104 #endif
    105