libffi/testsuite/libffi.call/strlen2_win32.c

   1 /* Area:        ffi_call
   2    Purpose:     Check fastcall strlen 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 __attribute__((fastcall)) my_fastcall_strlen(char *s)
  12 {
  13   return (strlen(s));
  14 }
  15
  16 int d
  17 int main (void)
  18 {
  19   ffi_cif cif;
  20   ffi_type *args[MAX_ARGS];
  21   void *values[MAX_ARGS];
  22   ffi_arg rint;
  23   char *s;
  24   args[0] = &ffi_type_pointer;
  25   values[0] = (void*) &s;
  26
  27   /* Initialize the cif */
  28   CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 1,
  29                        &ffi_type_sint, args) == FFI_OK);
  30
  31   s = "a";
  32   ffi_call(&cif, FFI_FN(my_fastcall_strlen), &rint, values);
  33   CHECK(rint == 1);
  34
  35   s = "1234567";
  36   ffi_call(&cif, FFI_FN(my_fastcall_strlen), &rint, values);
  37   CHECK(rint == 7);
  38
  39   s = "1234567890123456789012345";
  40   ffi_call(&cif, FFI_FN(my_fastcall_strlen), &rint, values);
  41   CHECK(rint == 25);
  42
  43   printf("fastcall strlen tests passed\n");
  44   exit(0);
  45 }