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nested_struct5.c
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nested_struct5.c
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/* Area: ffi_call, closure_call
Purpose: Check structure passing with different structure size.
Contains structs as parameter of the struct itself.
Sample taken from Alan Modras patch to src/prep_cif.c.
Limitations: none.
PR: none.
Originator: <andreast@gcc.gnu.org> 20051010 */
/* { dg-do run } */
#include "ffitest.h"
typedef struct A {
long double a;
unsigned char b;
} A;
typedef struct B {
struct A x;
unsigned char y;
} B;
static B B_fn(struct A b2, struct B b3)
{
struct B result;
result.x.a = b2.a + b3.x.a;
result.x.b = b2.b + b3.x.b + b3.y;
result.y = b2.b + b3.x.b;
printf("%d %d %d %d %d: %d %d %d\n", (int)b2.a, b2.b,
(int)b3.x.a, b3.x.b, b3.y,
(int)result.x.a, result.x.b, result.y);
return result;
}
static void
B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
void* userdata __UNUSED__)
{
struct A b0;
struct B b1;
b0 = *(struct A*)(args[0]);
b1 = *(struct B*)(args[1]);
*(B*)resp = B_fn(b0, b1);
}
int main (void)
{
ffi_cif cif;
#ifndef USING_MMAP
static ffi_closure cl;
#endif
ffi_closure *pcl;
void* args_dbl[3];
ffi_type* cls_struct_fields[3];
ffi_type* cls_struct_fields1[3];
ffi_type cls_struct_type, cls_struct_type1;
ffi_type* dbl_arg_types[3];
#ifdef USING_MMAP
pcl = allocate_mmap (sizeof(ffi_closure));
#else
pcl = &cl;
#endif
cls_struct_type.size = 0;
cls_struct_type.alignment = 0;
cls_struct_type.type = FFI_TYPE_STRUCT;
cls_struct_type.elements = cls_struct_fields;
cls_struct_type1.size = 0;
cls_struct_type1.alignment = 0;
cls_struct_type1.type = FFI_TYPE_STRUCT;
cls_struct_type1.elements = cls_struct_fields1;
struct A e_dbl = { 1.0, 7};
struct B f_dbl = {{12.0 , 127}, 99};
struct B res_dbl;
cls_struct_fields[0] = &ffi_type_longdouble;
cls_struct_fields[1] = &ffi_type_uchar;
cls_struct_fields[2] = NULL;
cls_struct_fields1[0] = &cls_struct_type;
cls_struct_fields1[1] = &ffi_type_uchar;
cls_struct_fields1[2] = NULL;
dbl_arg_types[0] = &cls_struct_type;
dbl_arg_types[1] = &cls_struct_type1;
dbl_arg_types[2] = NULL;
CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1,
dbl_arg_types) == FFI_OK);
args_dbl[0] = &e_dbl;
args_dbl[1] = &f_dbl;
args_dbl[2] = NULL;
ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
/* { dg-output "1 7 12 127 99: 13 233 134" } */
CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK);
res_dbl = ((B(*)(A, B))(pcl))(e_dbl, f_dbl);
/* { dg-output "\n1 7 12 127 99: 13 233 134" } */
CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
exit(0);
}