131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/* Area: ffi_call, closure_call
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Purpose: Check structure passing with different structure size.
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Contains structs as parameter of the struct itself.
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Sample taken from Alan Modras patch to src/prep_cif.c.
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Limitations: none.
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PR: none.
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Originator: <andreast@gcc.gnu.org> 20051010 */
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/* { dg-do run } */
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#include "ffitest.h"
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typedef struct A {
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unsigned char a;
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unsigned long long b;
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} A;
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typedef struct B {
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struct A x;
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unsigned char y;
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} B;
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typedef struct C {
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unsigned long d;
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unsigned char e;
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} C;
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static B B_fn(struct A b2, struct B b3, struct C b4)
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{
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struct B result;
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result.x.a = b2.a + b3.x.a + b4.d;
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result.x.b = b2.b + b3.x.b + b3.y + b4.e;
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result.y = b2.b + b3.x.b + b4.e;
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printf("%d %d %d %d %d %d %d: %d %d %d\n", b2.a, (int)b2.b,
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b3.x.a, (int)b3.x.b, b3.y, (int)b4.d, b4.e,
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result.x.a, (int)result.x.b, result.y);
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return result;
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}
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static void
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B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
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void* userdata __UNUSED__)
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{
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struct A b0;
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struct B b1;
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struct C b2;
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b0 = *(struct A*)(args[0]);
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b1 = *(struct B*)(args[1]);
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b2 = *(struct C*)(args[2]);
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*(B*)resp = B_fn(b0, b1, b2);
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}
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int main (void)
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{
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ffi_cif cif;
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void *code;
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ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
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void* args_dbl[4];
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ffi_type* cls_struct_fields[3];
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ffi_type* cls_struct_fields1[3];
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ffi_type* cls_struct_fields2[3];
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ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;
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ffi_type* dbl_arg_types[4];
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struct A e_dbl = { 1, 7LL};
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struct B f_dbl = {{12.0 , 127}, 99};
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struct C g_dbl = { 2, 9};
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struct B res_dbl;
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cls_struct_type.size = 0;
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cls_struct_type.alignment = 0;
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cls_struct_type.type = FFI_TYPE_STRUCT;
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cls_struct_type.elements = cls_struct_fields;
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cls_struct_type1.size = 0;
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cls_struct_type1.alignment = 0;
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cls_struct_type1.type = FFI_TYPE_STRUCT;
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cls_struct_type1.elements = cls_struct_fields1;
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cls_struct_type2.size = 0;
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cls_struct_type2.alignment = 0;
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cls_struct_type2.type = FFI_TYPE_STRUCT;
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cls_struct_type2.elements = cls_struct_fields2;
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cls_struct_fields[0] = &ffi_type_uchar;
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cls_struct_fields[1] = &ffi_type_uint64;
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cls_struct_fields[2] = NULL;
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cls_struct_fields1[0] = &cls_struct_type;
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cls_struct_fields1[1] = &ffi_type_uchar;
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cls_struct_fields1[2] = NULL;
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cls_struct_fields2[0] = &ffi_type_ulong;
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cls_struct_fields2[1] = &ffi_type_uchar;
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cls_struct_fields2[2] = NULL;
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dbl_arg_types[0] = &cls_struct_type;
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dbl_arg_types[1] = &cls_struct_type1;
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dbl_arg_types[2] = &cls_struct_type2;
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dbl_arg_types[3] = NULL;
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CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1,
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dbl_arg_types) == FFI_OK);
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args_dbl[0] = &e_dbl;
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args_dbl[1] = &f_dbl;
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args_dbl[2] = &g_dbl;
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args_dbl[3] = NULL;
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ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
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/* { dg-output "1 7 12 127 99 2 9: 15 242 143" } */
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CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));
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CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
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CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
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CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);
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res_dbl = ((B(*)(A, B, C))(code))(e_dbl, f_dbl, g_dbl);
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/* { dg-output "\n1 7 12 127 99 2 9: 15 242 143" } */
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CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));
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CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
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CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
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exit(0);
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}
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