Python code coverage for Modules/_ctypes/libffi/testsuite/libffi.call/cls_pointer_stack.c

#	count	content
1	n/a	/* Area: ffi_call, closure_call
2	n/a	Purpose: Check pointer arguments across multiple hideous stack frames.
3	n/a	Limitations: none.
4	n/a	PR: none.
5	n/a	Originator: Blake Chaffin 6/7/2007 */
6	n/a
7	n/a	/* { dg-do run { xfail strongarm--* xscale--* } } */
8	n/a	#include "ffitest.h"
9	n/a
10	n/a	static long dummyVar;
11	n/a
12	n/a	long dummy_func(
13	n/a	long double a1, char b1,
14	n/a	long double a2, char b2,
15	n/a	long double a3, char b3,
16	n/a	long double a4, char b4)
17	n/a	{
18	n/a	return a1 + b1 + a2 + b2 + a3 + b3 + a4 + b4;
19	n/a	}
20	n/a
21	n/a	void* cls_pointer_fn2(void* a1, void* a2)
22	n/a	{
23	n/a	long double trample1 = (intptr_t)a1 + (intptr_t)a2;
24	n/a	char trample2 = ((char)&a1)[0] + ((char)&a2)[0];
25	n/a	long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
26	n/a	char trample4 = trample2 + ((char*)&a1)[1];
27	n/a	long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
28	n/a	char trample6 = trample4 + ((char*)&a2)[1];
29	n/a	long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
30	n/a	char trample8 = trample6 + trample2;
31	n/a	void* result;
32	n/a
33	n/a	dummyVar = dummy_func(trample1, trample2, trample3, trample4,
34	n/a	trample5, trample6, trample7, trample8);
35	n/a
36	n/a	result = (void*)((intptr_t)a1 + (intptr_t)a2);
37	n/a
38	n/a	printf("0x%08x 0x%08x: 0x%08x\n",
39	n/a	(unsigned int)(uintptr_t) a1,
40	n/a	(unsigned int)(uintptr_t) a2,
41	n/a	(unsigned int)(uintptr_t) result);
42	n/a
43	n/a	return result;
44	n/a	}
45	n/a
46	n/a	void* cls_pointer_fn1(void* a1, void* a2)
47	n/a	{
48	n/a	long double trample1 = (intptr_t)a1 + (intptr_t)a2;
49	n/a	char trample2 = ((char)&a1)[0] + ((char)&a2)[0];
50	n/a	long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
51	n/a	char trample4 = trample2 + ((char*)&a1)[1];
52	n/a	long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
53	n/a	char trample6 = trample4 + ((char*)&a2)[1];
54	n/a	long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
55	n/a	char trample8 = trample6 + trample2;
56	n/a	void* result;
57	n/a
58	n/a	dummyVar = dummy_func(trample1, trample2, trample3, trample4,
59	n/a	trample5, trample6, trample7, trample8);
60	n/a
61	n/a	result = (void*)((intptr_t)a1 + (intptr_t)a2);
62	n/a
63	n/a	printf("0x%08x 0x%08x: 0x%08x\n",
64	n/a	(unsigned int)(intptr_t) a1,
65	n/a	(unsigned int)(intptr_t) a2,
66	n/a	(unsigned int)(intptr_t) result);
67	n/a
68	n/a	result = cls_pointer_fn2(result, a1);
69	n/a
70	n/a	return result;
71	n/a	}
72	n/a
73	n/a	static void
74	n/a	cls_pointer_gn(ffi_cif* cif __UNUSED__, void* resp,
75	n/a	void** args, void* userdata __UNUSED__)
76	n/a	{
77	n/a	void* a1 = (void*)(args[0]);
78	n/a	void* a2 = (void*)(args[1]);
79	n/a
80	n/a	long double trample1 = (intptr_t)a1 + (intptr_t)a2;
81	n/a	char trample2 = ((char)&a1)[0] + ((char)&a2)[0];
82	n/a	long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
83	n/a	char trample4 = trample2 + ((char*)&a1)[1];
84	n/a	long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
85	n/a	char trample6 = trample4 + ((char*)&a2)[1];
86	n/a	long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
87	n/a	char trample8 = trample6 + trample2;
88	n/a
89	n/a	dummyVar = dummy_func(trample1, trample2, trample3, trample4,
90	n/a	trample5, trample6, trample7, trample8);
91	n/a
92	n/a	(void*)resp = cls_pointer_fn1(a1, a2);
93	n/a	}
94	n/a
95	n/a	int main (void)
96	n/a	{
97	n/a	ffi_cif cif;
98	n/a	void *code;
99	n/a	ffi_closure* pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
100	n/a	void* args[3];
101	n/a	/* ffi_type cls_pointer_type; */
102	n/a	ffi_type* arg_types[3];
103	n/a
104	n/a	/* cls_pointer_type.size = sizeof(void*);
105	n/a	cls_pointer_type.alignment = 0;
106	n/a	cls_pointer_type.type = FFI_TYPE_POINTER;
107	n/a	cls_pointer_type.elements = NULL;*/
108	n/a
109	n/a	void* arg1 = (void*)0x01234567;
110	n/a	void* arg2 = (void*)0x89abcdef;
111	n/a	ffi_arg res = 0;
112	n/a
113	n/a	arg_types[0] = &ffi_type_pointer;
114	n/a	arg_types[1] = &ffi_type_pointer;
115	n/a	arg_types[2] = NULL;
116	n/a
117	n/a	CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_pointer,
118	n/a	arg_types) == FFI_OK);
119	n/a
120	n/a	args[0] = &arg1;
121	n/a	args[1] = &arg2;
122	n/a	args[2] = NULL;
123	n/a
124	n/a	printf("\n");
125	n/a	ffi_call(&cif, FFI_FN(cls_pointer_fn1), &res, args);
126	n/a
127	n/a	printf("res: 0x%08x\n", (unsigned int) res);
128	n/a	/* { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" } */
129	n/a	/* { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" } */
130	n/a	/* { dg-output "\nres: 0x8bf258bd" } */
131	n/a
132	n/a	CHECK(ffi_prep_closure_loc(pcl, &cif, cls_pointer_gn, NULL, code) == FFI_OK);
133	n/a
134	n/a	res = (ffi_arg)(uintptr_t)((void()(void, void))(code))(arg1, arg2);
135	n/a
136	n/a	printf("res: 0x%08x\n", (unsigned int) res);
137	n/a	/* { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" } */
138	n/a	/* { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" } */
139	n/a	/* { dg-output "\nres: 0x8bf258bd" } */
140	n/a
141	n/a	exit(0);
142	n/a	}