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1 /* | 1 /* |
2 * Copyright (c) 2012 The Native Client Authors. All rights reserved. | 2 * Copyright (c) 2012 The Native Client Authors. All rights reserved. |
3 * Use of this source code is governed by a BSD-style license that can be | 3 * Use of this source code is governed by a BSD-style license that can be |
4 * found in the LICENSE file. | 4 * found in the LICENSE file. |
5 */ | 5 */ |
6 | 6 |
7 /* | 7 /* |
8 * This tests execises __builtin_dwarf_cfa() | 8 * This tests execises __builtin_dwarf_cfa() |
9 * | 9 * |
10 * NOTE: because of fun pointer casting we need to disable -pedantic. | 10 * NOTE: because of fun pointer casting we need to disable -pedantic. |
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34 if (i % 8 == 7) printf("\n"); | 34 if (i % 8 == 7) printf("\n"); |
35 } | 35 } |
36 } | 36 } |
37 | 37 |
38 | 38 |
39 void* GetReturnAddress(void* frame_end) { | 39 void* GetReturnAddress(void* frame_end) { |
40 #if defined(__native_client__) | 40 #if defined(__native_client__) |
41 | 41 |
42 #if defined(__arm__) | 42 #if defined(__arm__) |
43 return ((void**)frame_end)[-1]; | 43 return ((void**)frame_end)[-1]; |
| 44 #elif defined(__mips__) |
| 45 return ((void**)frame_end)[-1]; |
44 #elif defined(__i386__) | 46 #elif defined(__i386__) |
45 return ((void**)frame_end)[-1]; | 47 return ((void**)frame_end)[-1]; |
46 #elif defined(__x86_64__) | 48 #elif defined(__x86_64__) |
47 /* NOTE: a call pushes 64 bits but we only care about the first 32 */ | 49 /* NOTE: a call pushes 64 bits but we only care about the first 32 */ |
48 return ((void**)frame_end)[-2]; | 50 return ((void**)frame_end)[-2]; |
49 #else | 51 #else |
50 #error "unknown arch" | 52 #error "unknown arch" |
51 #endif | 53 #endif |
52 | 54 |
53 #else /* !defined(__native_client__) */ | 55 #else /* !defined(__native_client__) */ |
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84 } | 86 } |
85 | 87 |
86 /* NOTE: we dump the frame for this invocation at the beginning of the next */ | 88 /* NOTE: we dump the frame for this invocation at the beginning of the next */ |
87 printf("frame [%p, %p[\n", cfa, old_cfa); | 89 printf("frame [%p, %p[\n", cfa, old_cfa); |
88 printf("framesize %d\n", frame_size); | 90 printf("framesize %d\n", frame_size); |
89 printf("return %p\n", return_address); | 91 printf("return %p\n", return_address); |
90 DumpMemory(cfa, frame_size); | 92 DumpMemory(cfa, frame_size); |
91 | 93 |
92 // TODO(sehr): change those to 16 | 94 // TODO(sehr): change those to 16 |
93 ASSERT(frame_size % 8 == 0, "ERRRO: bad frame size"); | 95 ASSERT(frame_size % 8 == 0, "ERRRO: bad frame size"); |
94 ASSERT((long) cfa % 8 == 0, "ERRRO: bad frame pointer"); | 96 ASSERT((int) cfa % 8 == 0, "ERRRO: bad frame pointer"); |
95 | 97 |
96 if (n == NUM_ITERS) { | 98 if (n == NUM_ITERS) { |
97 // main()'s stackframe may be non-standard due to the startup code | 99 // main()'s stackframe may be non-standard due to the startup code |
98 } else if (n == NUM_ITERS - 1) { | 100 } else if (n == NUM_ITERS - 1) { |
99 // first stack frame for recurse() - return address inside main() | 101 // first stack frame for recurse() - return address inside main() |
100 ASSERT(FUNPTR2PTR(main) < return_address, | 102 ASSERT(FUNPTR2PTR(main) < return_address, |
101 "ERROR: return address is not within main()"); | 103 "ERROR: return address is not within main()"); |
102 } else { | 104 } else { |
103 // recurse() calling itself | 105 // recurse() calling itself |
104 ASSERT(FUNPTR2PTR(recurse) < return_address && | 106 ASSERT(FUNPTR2PTR(recurse) < return_address && |
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127 int main(int argc, char* argv[]) { | 129 int main(int argc, char* argv[]) { |
128 printf("&main: %p\n", FUNPTR2PTR(main)); | 130 printf("&main: %p\n", FUNPTR2PTR(main)); |
129 printf("&recurse: %p\n", FUNPTR2PTR(recurse)); | 131 printf("&recurse: %p\n", FUNPTR2PTR(recurse)); |
130 ASSERT(FUNPTR2PTR(recurse) < FUNPTR2PTR(main), | 132 ASSERT(FUNPTR2PTR(recurse) < FUNPTR2PTR(main), |
131 "ERROR: this test assumes that main() follows recurse()\n"); | 133 "ERROR: this test assumes that main() follows recurse()\n"); |
132 | 134 |
133 unsigned char* cfa = (unsigned char*) __builtin_dwarf_cfa(); | 135 unsigned char* cfa = (unsigned char*) __builtin_dwarf_cfa(); |
134 recurse(NUM_ITERS, cfa); | 136 recurse(NUM_ITERS, cfa); |
135 return 55; | 137 return 55; |
136 } | 138 } |
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