libffi/testsuite/libffi.call/fastthis1_win32.c

   1 /* Area:        ffi_call
   2    Purpose:     Check fastcall fct 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(char *s, float a)
  12 {
  13   return (size_t) ((int) strlen(s) + (int) a);
  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   float v2;
  24   args[0] = &ffi_type_pointer;
  25   args[1] = &ffi_type_float;
  26   values[0] = (void*) &s;
  27   values[1] = (void*) &v2;
  28
  29   /* Initialize the cif */
  30   CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 2,
  31                        &ffi_type_sint, args) == FFI_OK);
  32
  33   s = "a";
  34   v2 = 0.0;
  35   ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
  36   CHECK(rint == 1);
  37
  38   s = "1234567";
  39   v2 = -1.0;
  40   ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
  41   CHECK(rint == 6);
  42
  43   s = "1234567890123456789012345";
  44   v2 = 1.0;
  45   ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
  46   CHECK(rint == 26);
  47
  48   printf("fastcall fct1 tests passed\n");
  49   exit(0);
  50 }