Viewing file:  single_entry_structs1.c (1.88 KB) -rw-r--r--
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/* Area: ffi_call, closure_call
Purpose: Single argument structs have a different ABI in emscripten.
Limitations: none.
PR: none.
Originator: <hood@mit.edu> */
/* { dg-do run } */
#include "ffitest.h"
typedef struct A {
int a;
} A;
static struct A A_fn(int b0, struct A b1)
{
b1.a += b0;
return b1;
}
static void
A_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
void* userdata __UNUSED__)
{
int b0;
struct A b1;
b0 = *(int*)(args[0]);
b1 = *(struct A*)(args[1]);
*(A*)resp = A_fn(b0, b1);
}
int main (void)
{
printf("123\n");
ffi_cif cif;
void *code;
ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
void* args_dbl[3];
ffi_type* cls_struct_fields[2];
ffi_type cls_struct_type;
ffi_type* dbl_arg_types[3];
int e_dbl = 12125;
struct A f_dbl = { 31625 };
struct A res_dbl;
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_fields[0] = &ffi_type_sint;
cls_struct_fields[1] = NULL;
dbl_arg_types[0] = &ffi_type_sint;
dbl_arg_types[1] = &cls_struct_type;
dbl_arg_types[2] = NULL;
res_dbl = A_fn(e_dbl, f_dbl);
printf("0 res: %d\n", res_dbl.a);
/* { dg-output "0 res: 43750" } */
CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
dbl_arg_types) == FFI_OK);
args_dbl[0] = &e_dbl;
args_dbl[1] = &f_dbl;
args_dbl[2] = NULL;
ffi_call(&cif, FFI_FN(A_fn), &res_dbl, args_dbl);
printf("1 res: %d\n", res_dbl.a);
/* { dg-output "\n1 res: 43750" } */
CHECK( res_dbl.a == (e_dbl + f_dbl.a));
CHECK(ffi_prep_closure_loc(pcl, &cif, A_gn, NULL, code) == FFI_OK);
res_dbl = ((A(*)(int, A))(code))(e_dbl, f_dbl);
printf("2 res: %d\n", res_dbl.a);
/* { dg-output "\n2 res: 43750" } */
CHECK( res_dbl.a == (e_dbl + f_dbl.a));
exit(0);
}
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