libffi/testsuite/libffi.call/fastthis3_win32.c

   1 /* Area:        ffi_call
   2    Purpose:     Check fastcall f call on X86_WIN32 systems.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  From the original ffitest.c  */
   6
   7 /* { dg-do run { target i?86-*-cygwin* i?86-*-mingw* } } */
   8
   9 #include "ffitest.h"
  10
  11 static size_t __FASTCALL__ my_fastcall_f(float a, char *s, int i)
  12 {
  13   return (size_t) ((int) strlen(s) + (int) a + i);
  14 }
  15
  16 int main (void)
  17 {
  18   ffi_cif cif;
  19   ffi_type *args[MAX_ARGS];
  20   void *values[MAX_ARGS];
  21   ffi_arg rint;
  22   char *s;
  23   int v1;
  24   float v2;
  25   args[2] = &ffi_type_sint;
  26   args[1] = &ffi_type_pointer;
  27   args[0] = &ffi_type_float;
  28   values[2] = (void*) &v1;
  29   values[1] = (void*) &s;
  30   values[0] = (void*) &v2;
  31
  32   /* Initialize the cif */
  33   CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 3,
  34                        &ffi_type_sint, args) == FFI_OK);
  35
  36   s = "a";
  37   v1 = 1;
  38   v2 = 0.0;
  39   ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
  40   CHECK(rint == 2);
  41
  42   s = "1234567";
  43   v2 = -1.0;
  44   v1 = -2;
  45   ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
  46   CHECK(rint == 4);
  47
  48   s = "1234567890123456789012345";
  49   v2 = 1.0;
  50   v1 = 2;
  51   ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
  52   CHECK(rint == 28);
  53
  54   printf("fastcall fct3 tests passed\n");
  55   exit(0);
  56 }