Ruby  2.4.2p198(2017-09-14revision59899)
cls_pointer_stack.c
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1 /* Area: ffi_call, closure_call
2  Purpose: Check pointer arguments across multiple hideous stack frames.
3  Limitations: none.
4  PR: none.
5  Originator: Blake Chaffin 6/7/2007 */
6 
7 /* { dg-do run { xfail strongarm*-*-* xscale*-*-* } } */
8 #include "ffitest.h"
9 
10 static long dummyVar;
11 
13  long double a1, char b1,
14  long double a2, char b2,
15  long double a3, char b3,
16  long double a4, char b4)
17 {
18  return a1 + b1 + a2 + b2 + a3 + b3 + a4 + b4;
19 }
20 
21 void* cls_pointer_fn2(void* a1, void* a2)
22 {
23  long double trample1 = (intptr_t)a1 + (intptr_t)a2;
24  char trample2 = ((char*)&a1)[0] + ((char*)&a2)[0];
25  long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
26  char trample4 = trample2 + ((char*)&a1)[1];
27  long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
28  char trample6 = trample4 + ((char*)&a2)[1];
29  long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
30  char trample8 = trample6 + trample2;
31  void* result;
32 
33  dummyVar = dummy_func(trample1, trample2, trample3, trample4,
34  trample5, trample6, trample7, trample8);
35 
36  result = (void*)((intptr_t)a1 + (intptr_t)a2);
37 
38  printf("0x%08x 0x%08x: 0x%08x\n",
39  (unsigned int)(uintptr_t) a1,
40  (unsigned int)(uintptr_t) a2,
41  (unsigned int)(uintptr_t) result);
42 
43  return result;
44 }
45 
46 void* cls_pointer_fn1(void* a1, void* a2)
47 {
48  long double trample1 = (intptr_t)a1 + (intptr_t)a2;
49  char trample2 = ((char*)&a1)[0] + ((char*)&a2)[0];
50  long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
51  char trample4 = trample2 + ((char*)&a1)[1];
52  long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
53  char trample6 = trample4 + ((char*)&a2)[1];
54  long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
55  char trample8 = trample6 + trample2;
56  void* result;
57 
58  dummyVar = dummy_func(trample1, trample2, trample3, trample4,
59  trample5, trample6, trample7, trample8);
60 
61  result = (void*)((intptr_t)a1 + (intptr_t)a2);
62 
63  printf("0x%08x 0x%08x: 0x%08x\n",
64  (unsigned int)(intptr_t) a1,
65  (unsigned int)(intptr_t) a2,
66  (unsigned int)(intptr_t) result);
67 
68  result = cls_pointer_fn2(result, a1);
69 
70  return result;
71 }
72 
73 static void
74 cls_pointer_gn(ffi_cif* cif __UNUSED__, void* resp,
75  void** args, void* userdata __UNUSED__)
76 {
77  void* a1 = *(void**)(args[0]);
78  void* a2 = *(void**)(args[1]);
79 
80  long double trample1 = (intptr_t)a1 + (intptr_t)a2;
81  char trample2 = ((char*)&a1)[0] + ((char*)&a2)[0];
82  long double trample3 = (intptr_t)trample1 + (intptr_t)a1;
83  char trample4 = trample2 + ((char*)&a1)[1];
84  long double trample5 = (intptr_t)trample3 + (intptr_t)a2;
85  char trample6 = trample4 + ((char*)&a2)[1];
86  long double trample7 = (intptr_t)trample5 + (intptr_t)trample1;
87  char trample8 = trample6 + trample2;
88 
89  dummyVar = dummy_func(trample1, trample2, trample3, trample4,
90  trample5, trample6, trample7, trample8);
91 
92  *(void**)resp = cls_pointer_fn1(a1, a2);
93 }
94 
95 int main (void)
96 {
97  ffi_cif cif;
98  void *code;
99  ffi_closure* pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
100  void* args[3];
101  /* ffi_type cls_pointer_type; */
102  ffi_type* arg_types[3];
103 
104 /* cls_pointer_type.size = sizeof(void*);
105  cls_pointer_type.alignment = 0;
106  cls_pointer_type.type = FFI_TYPE_POINTER;
107  cls_pointer_type.elements = NULL;*/
108 
109  void* arg1 = (void*)0x01234567;
110  void* arg2 = (void*)0x89abcdef;
111  ffi_arg res = 0;
112 
113  arg_types[0] = &ffi_type_pointer;
114  arg_types[1] = &ffi_type_pointer;
115  arg_types[2] = NULL;
116 
117  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_pointer,
118  arg_types) == FFI_OK);
119 
120  args[0] = &arg1;
121  args[1] = &arg2;
122  args[2] = NULL;
123 
124  printf("\n");
125  ffi_call(&cif, FFI_FN(cls_pointer_fn1), &res, args);
126 
127  printf("res: 0x%08x\n", (unsigned int) res);
128  /* { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" } */
129  /* { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" } */
130  /* { dg-output "\nres: 0x8bf258bd" } */
131 
132  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_pointer_gn, NULL, code) == FFI_OK);
133 
134  res = (ffi_arg)(uintptr_t)((void*(*)(void*, void*))(code))(arg1, arg2);
135 
136  printf("res: 0x%08x\n", (unsigned int) res);
137  /* { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" } */
138  /* { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" } */
139  /* { dg-output "\nres: 0x8bf258bd" } */
140 
141  exit(0);
142 }
void * cls_pointer_fn1(void *a1, void *a2)
unsigned long ffi_arg
Definition: ffitarget.h:30
long dummy_func(long double a1, char b1, long double a2, char b2, long double a3, char b3, long double a4, char b4)
void * cls_pointer_fn2(void *a1, void *a2)
#define __UNUSED__
Definition: ffitest.h:28
ffi_status ffi_prep_closure_loc(ffi_closure *closure, ffi_cif *cif, void(*fun)(ffi_cif *, void *, void **, void *), void *user_data, void *codeloc)
Definition: ffi.c:928
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
unsigned int uintptr_t
Definition: win32.h:106
static VALUE result
Definition: nkf.c:40
int intptr_t
Definition: win32.h:90
static long dummyVar
#define CHECK(sub)
Definition: compile.c:408
static void cls_pointer_gn(ffi_cif *cif __UNUSED__, void *resp, void **args, void *userdata __UNUSED__)
#define NULL
Definition: _sdbm.c:102
int main(void)
ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs, ffi_type *rtype, ffi_type **atypes)
Definition: prep_cif.c:226