/* 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 {
unsigned char a;
unsigned long long b;
} A;
typedef struct B {
struct A x;
unsigned char y;
} B;
typedef struct C {
unsigned long d;
unsigned char e;
} C;
static B B_fn(struct A b2, struct B b3, struct C b4)
{
struct B result;
result.x.a = b2.a + b3.x.a + b4.d;
result.x.b = b2.b + b3.x.b + b3.y + b4.e;
result.y = b2.b + b3.x.b + b4.e;
printf("%d %d %d %d %d %d %d: %d %d %d\n", b2.a, (int)b2.b,
b3.x.a, (int)b3.x.b, b3.y, (int)b4.d, b4.e,
result.x.a, (int)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;
struct C b2;
b0 = *(struct A*)(args[0]);
b1 = *(struct B*)(args[1]);
b2 = *(struct C*)(args[2]);
*(B*)resp = B_fn(b0, b1, b2);
}
int main (void)
{
ffi_cif cif;
void *code;
ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
void* args_dbl[4];
ffi_type* cls_struct_fields[3];
ffi_type* cls_struct_fields1[3];
ffi_type* cls_struct_fields2[3];
ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;
ffi_type* dbl_arg_types[4];
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;
cls_struct_type2.size = 0;
cls_struct_type2.alignment = 0;
cls_struct_type2.type = FFI_TYPE_STRUCT;
cls_struct_type2.elements = cls_struct_fields2;
struct A e_dbl = { 1, 7LL};
struct B f_dbl = {{12.0 , 127}, 99};
struct C g_dbl = { 2, 9};
struct B res_dbl;
cls_struct_fields[0] = &ffi_type_uchar;
cls_struct_fields[1] = &ffi_type_uint64;
cls_struct_fields[2] = NULL;
cls_struct_fields1[0] = &cls_struct_type;
cls_struct_fields1[1] = &ffi_type_uchar;
cls_struct_fields1[2] = NULL;
cls_struct_fields2[0] = &ffi_type_ulong;
cls_struct_fields2[1] = &ffi_type_uchar;
cls_struct_fields2[2] = NULL;
dbl_arg_types[0] = &cls_struct_type;
dbl_arg_types[1] = &cls_struct_type1;
dbl_arg_types[2] = &cls_struct_type2;
dbl_arg_types[3] = NULL;
CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1,
dbl_arg_types) == FFI_OK);
args_dbl[0] = &e_dbl;
args_dbl[1] = &f_dbl;
args_dbl[2] = &g_dbl;
args_dbl[3] = NULL;
ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
/* { dg-output "1 7 12 127 99 2 9: 15 242 143" } */
CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));
CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);
res_dbl = ((B(*)(A, B, C))(code))(e_dbl, f_dbl, g_dbl);
/* { dg-output "\n1 7 12 127 99 2 9: 15 242 143" } */
CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));
CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
exit(0);
}
