libffi/testsuite/libffi.special/ffitestcxx.h

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <fcntl.h>
   4 #include <ffi.h>
   5 #include "fficonfig.h"
   6
   7 #define MAX_ARGS 256
   8
   9
  10 /* Define __UNUSED__ that also other compilers than gcc can run the tests.  */
  11 #undef __UNUSED__
  12 #if defined(__GNUC__)
  13 #define __UNUSED__ __attribute__((__unused__))
  14 #else
  15 #define __UNUSED__
  16 #endif
  17
  18 #define CHECK(x) (!(x) ? abort() : (void)0)
  19
  20 /* Prefer MAP_ANON(YMOUS) to /dev/zero, since we don't need to keep a
  21    file open.  */
  22 #ifdef HAVE_MMAP_ANON
  23 # undef HAVE_MMAP_DEV_ZERO
  24
  25 # include <sys/mman.h>
  26 # ifndef MAP_FAILED
  27 #  define MAP_FAILED -1
  28 # endif
  29 # if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
  30 #  define MAP_ANONYMOUS MAP_ANON
  31 # endif
  32 # define USING_MMAP
  33
  34 #endif
  35
  36 #ifdef HAVE_MMAP_DEV_ZERO
  37
  38 # include <sys/mman.h>
  39 # ifndef MAP_FAILED
  40 #  define MAP_FAILED -1
  41 # endif
  42 # define USING_MMAP
  43
  44 #endif
  45
  46
  47 /* MinGW kludge.  */
  48 #ifdef _WIN64
  49 #define PRIdLL "I64d"
  50 #define PRIuLL "I64u"
  51 #else
  52 #define PRIdLL "lld"
  53 #define PRIuLL "llu"
  54 #endif
  55
  56 #ifdef USING_MMAP
  57 static inline void *
  58 allocate_mmap (size_t size)
  59 {
  60   void *page;
  61 #if defined (HAVE_MMAP_DEV_ZERO)
  62   static int dev_zero_fd = -1;
  63 #endif
  64
  65 #ifdef HAVE_MMAP_DEV_ZERO
  66   if (dev_zero_fd == -1)
  67     {
  68       dev_zero_fd = open ("/dev/zero", O_RDONLY);
  69       if (dev_zero_fd == -1)
  70         {
  71           perror ("open /dev/zero: %m");
  72           exit (1);
  73         }
  74     }
  75 #endif
  76
  77
  78 #ifdef HAVE_MMAP_ANON
  79   page = mmap (NULL, size, PROT_READ | PROT_WRITE | PROT_EXEC,
  80                MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  81 #endif
  82 #ifdef HAVE_MMAP_DEV_ZERO
  83   page = mmap (NULL, size, PROT_READ | PROT_WRITE | PROT_EXEC,
  84                MAP_PRIVATE, dev_zero_fd, 0);
  85 #endif
  86
  87   if (page == (char *) MAP_FAILED)
  88     {
  89       perror ("virtual memory exhausted");
  90       exit (1);
  91     }
  92
  93   return page;
  94 }
  95
  96 #endif