diff options
Diffstat (limited to 'testsuite/libffi.call/cls_pointer_stack.c')
| -rw-r--r-- | testsuite/libffi.call/cls_pointer_stack.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/testsuite/libffi.call/cls_pointer_stack.c b/testsuite/libffi.call/cls_pointer_stack.c new file mode 100644 index 0000000..697f271 --- /dev/null +++ b/testsuite/libffi.call/cls_pointer_stack.c @@ -0,0 +1,140 @@ +/* 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; + + dummyVar = dummy_func(trample1, trample2, trample3, trample4, + trample5, trample6, trample7, trample8); + + void* 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; + + dummyVar = dummy_func(trample1, trample2, trample3, trample4, + trample5, trample6, trample7, trample8); + + void* 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)((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); +} |