Viewing file:  cls_pointer_stack.c (4.14 KB) -rw-r--r--
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/* Area: ffi_call, closure_call
Purpose: Check pointer arguments across multiple hideous stack frames.
Limitations: none.
PR: none.
Originator: Blake Chaffin 6/7/2007 */
/* { dg-do run { xfail strongarm*-*-* xscale*-*-* } } */
#include "ffitest.h"
static long dummyVar;
long dummy_func(
long double a1, char b1,
long double a2, char b2,
long double a3, char b3,
long double a4, char b4)
{
return a1 + b1 + a2 + b2 + a3 + b3 + a4 + b4;
}
void* cls_pointer_fn2(void* a1, void* a2)
{
long double trample1 = (intptr_t)a1 + (intptr_t)a2;
char trample2 = ((char*)&a1)[0] + ((char*)&a2)[0];
long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
char trample4 = trample2 + ((char*)&a1)[1];
long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
char trample6 = trample4 + ((char*)&a2)[1];
long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
char trample8 = trample6 + trample2;
void* result;
dummyVar = dummy_func(trample1, trample2, trample3, trample4,
trample5, trample6, trample7, trample8);
result = (void*)((intptr_t)a1 + (intptr_t)a2);
printf("0x%08x 0x%08x: 0x%08x\n",
(unsigned int)(uintptr_t) a1,
(unsigned int)(uintptr_t) a2,
(unsigned int)(uintptr_t) result);
return result;
}
void* cls_pointer_fn1(void* a1, void* a2)
{
long double trample1 = (intptr_t)a1 + (intptr_t)a2;
char trample2 = ((char*)&a1)[0] + ((char*)&a2)[0];
long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
char trample4 = trample2 + ((char*)&a1)[1];
long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
char trample6 = trample4 + ((char*)&a2)[1];
long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
char trample8 = trample6 + trample2;
void* result;
dummyVar = dummy_func(trample1, trample2, trample3, trample4,
trample5, trample6, trample7, trample8);
result = (void*)((intptr_t)a1 + (intptr_t)a2);
printf("0x%08x 0x%08x: 0x%08x\n",
(unsigned int)(intptr_t) a1,
(unsigned int)(intptr_t) a2,
(unsigned int)(intptr_t) result);
result = cls_pointer_fn2(result, a1);
return result;
}
static void
cls_pointer_gn(ffi_cif* cif __UNUSED__, void* resp,
void** args, void* userdata __UNUSED__)
{
void* a1 = *(void**)(args[0]);
void* a2 = *(void**)(args[1]);
long double trample1 = (intptr_t)a1 + (intptr_t)a2;
char trample2 = ((char*)&a1)[0] + ((char*)&a2)[0];
long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
char trample4 = trample2 + ((char*)&a1)[1];
long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
char trample6 = trample4 + ((char*)&a2)[1];
long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
char trample8 = trample6 + trample2;
dummyVar = dummy_func(trample1, trample2, trample3, trample4,
trample5, trample6, trample7, trample8);
*(void**)resp = cls_pointer_fn1(a1, a2);
}
int main (void)
{
ffi_cif cif;
void *code;
ffi_closure* pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
void* args[3];
/* ffi_type cls_pointer_type; */
ffi_type* arg_types[3];
/* cls_pointer_type.size = sizeof(void*);
cls_pointer_type.alignment = 0;
cls_pointer_type.type = FFI_TYPE_POINTER;
cls_pointer_type.elements = NULL;*/
void* arg1 = (void*)0x01234567;
void* arg2 = (void*)0x89abcdef;
ffi_arg res = 0;
arg_types[0] = &ffi_type_pointer;
arg_types[1] = &ffi_type_pointer;
arg_types[2] = NULL;
CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_pointer,
arg_types) == FFI_OK);
args[0] = &arg1;
args[1] = &arg2;
args[2] = NULL;
printf("\n");
ffi_call(&cif, FFI_FN(cls_pointer_fn1), &res, args);
printf("res: 0x%08x\n", (unsigned int) res);
/* { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" } */
/* { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" } */
/* { dg-output "\nres: 0x8bf258bd" } */
CHECK(ffi_prep_closure_loc(pcl, &cif, cls_pointer_gn, NULL, code) == FFI_OK);
res = (ffi_arg)(uintptr_t)((void*(*)(void*, void*))(code))(arg1, arg2);
printf("res: 0x%08x\n", (unsigned int) res);
/* { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" } */
/* { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" } */
/* { dg-output "\nres: 0x8bf258bd" } */
exit(0);
}
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