kc3-lang/libffi/testsuite/libffi.call/cls_double_va.c

• Show log

  Commit

• Hash : 03e9ee32
  Author :
  Date : 2011-11-18T15:13:00
  

  Fix cls_double_va.c and update docs

Download

• testsuite/libffi.call/cls_double_va.c

• /* Area:		ffi_call, closure_call
     Purpose:		Test doubles passed in variable argument lists.
     Limitations:	none.
     PR:			none.
     Originator:	Blake Chaffin 6/6/2007	 */
  
  /* { dg-do run { xfail strongarm*-*-* xscale*-*-* } } */
  /* { dg-output "" { xfail avr32*-*-* } } */
  /* { dg-output "" { xfail mips-sgi-irix6* } } PR libffi/46660 */
  /* { dg-skip-if "" arm*-*-* { "-mfloat-abi=hard" } { "" } } */
  
  #include "ffitest.h"
  
  static void
  cls_double_va_fn(ffi_cif* cif __UNUSED__, void* resp, 
  		 void** args, void* userdata __UNUSED__)
  {
  	char*	format		= *(char**)args[0];
  	double	doubleValue	= *(double*)args[1];
  
  	*(ffi_arg*)resp = printf(format, doubleValue);
  }
  
  int main (void)
  {
  	ffi_cif cif;
          void *code;
  	ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  	void* args[3];
  	ffi_type* arg_types[3];
  
  	char*	format		= "%.1f\n";
  	double	doubleArg	= 7;
  	ffi_arg	res			= 0;
  
  	arg_types[0] = &ffi_type_pointer;
  	arg_types[1] = &ffi_type_double;
  	arg_types[2] = NULL;
  
  	/* This printf call is variadic */
  	CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 2, &ffi_type_sint,
  		arg_types) == FFI_OK);
  
  	args[0] = &format;
  	args[1] = &doubleArg;
  	args[2] = NULL;
  
  	ffi_call(&cif, FFI_FN(printf), &res, args);
  	// { dg-output "7.0" }
  	printf("res: %d\n", (int) res);
  	// { dg-output "\nres: 4" }
  
  	/* The call to cls_double_va_fn is static, so have to use a normal prep_cif */
  	CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_sint, arg_types) == FFI_OK);
  
  	CHECK(ffi_prep_closure_loc(pcl, &cif, cls_double_va_fn, NULL, code) == FFI_OK);
  
  	res	= ((int(*)(char*, double))(code))(format, doubleArg);
  	// { dg-output "\n7.0" }
  	printf("res: %d\n", (int) res);
  	// { dg-output "\nres: 4" }
  
  	exit(0);
  }
  

Download