/* Area: fp and variadics
Purpose: check fp inputs and returns work on variadics, even the fixed params
Limitations: None
PR: none
Originator: <david.gilbert@linaro.org> 2011-01-25
Intended to stress the difference in ABI on ARM vfp
*/
/* { dg-do run } */
#include <stdarg.h>
#include "ffitest.h"
/* prints out all the parameters, and returns the sum of them all.
* 'x' is the number of variadic parameters all of which are double in this test
*/
double float_va_fn(unsigned int x, double y,...)
{
double total=0.0;
va_list ap;
unsigned int i;
total+=(double)x;
total+=y;
printf("%u: %.1f :", x, y);
va_start(ap, y);
for(i=0;i<x;i++)
{
double arg=va_arg(ap, double);
total+=arg;
printf(" %d:%.1f ", i, arg);
}
va_end(ap);
printf(" total: %.1f\n", total);
return total;
}
int main (void)
{
ffi_cif cif;
ffi_type *arg_types[5];
void *values[5];
double doubles[5];
unsigned int firstarg;
double resfp;
/* First test, pass float_va_fn(0,2.0) - note there are no actual
* variadic parameters, but it's declared variadic so the ABI may be
* different. */
/* Call it statically and then via ffi */
resfp=float_va_fn(0,2.0);
// { dg-output "0: 2.0 : total: 2.0" }
printf("compiled: %.1f\n", resfp);
// { dg-output "\ncompiled: 2.0" }
arg_types[0] = &ffi_type_uint;
arg_types[1] = &ffi_type_double;
arg_types[2] = NULL;
CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 2, 2,
&ffi_type_double, arg_types) == FFI_OK);
firstarg = 0;
doubles[0] = 2.0;
values[0] = &firstarg;
values[1] = &doubles[0];
ffi_call(&cif, FFI_FN(float_va_fn), &resfp, values);
// { dg-output "\n0: 2.0 : total: 2.0" }
printf("ffi: %.1f\n", resfp);
// { dg-output "\nffi: 2.0" }
/* Second test, float_va_fn(2,2.0,3.0,4.0), now with variadic params */
/* Call it statically and then via ffi */
resfp=float_va_fn(2,2.0,3.0,4.0);
// { dg-output "\n2: 2.0 : 0:3.0 1:4.0 total: 11.0" }
printf("compiled: %.1f\n", resfp);
// { dg-output "\ncompiled: 11.0" }
arg_types[0] = &ffi_type_uint;
arg_types[1] = &ffi_type_double;
arg_types[2] = &ffi_type_double;
arg_types[3] = &ffi_type_double;
arg_types[4] = NULL;
CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 2, 4,
&ffi_type_double, arg_types) == FFI_OK);
firstarg = 2;
doubles[0] = 2.0;
doubles[1] = 3.0;
doubles[2] = 4.0;
values[0] = &firstarg;
values[1] = &doubles[0];
values[2] = &doubles[1];
values[3] = &doubles[2];
ffi_call(&cif, FFI_FN(float_va_fn), &resfp, values);
// { dg-output "\n2: 2.0 : 0:3.0 1:4.0 total: 11.0" }
printf("ffi: %.1f\n", resfp);
// { dg-output "\nffi: 11.0" }
exit(0);
}
