1 /* Copyright (C) 2010 Wildfire Games.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining
4 * a copy of this software and associated documentation files (the
5 * "Software"), to deal in the Software without restriction, including
6 * without limitation the rights to use, copy, modify, merge, publish,
7 * distribute, sublicense, and/or sell copies of the Software, and to
8 * permit persons to whom the Software is furnished to do so, subject to
9 * the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included
12 * in all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
15 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
17 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
18 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
19 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
20 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23 /*
24 * CPU and memory detection.
25 */
26
27 #include "precompiled.h"
28 #include "lib/sysdep/cpu.h"
29
30 static const StatusDefinition cpuStatusDefinitions[] = {
31 { ERR::CPU_FEATURE_MISSING, L"This CPU doesn't support a required feature" },
32 { ERR::CPU_UNKNOWN_OPCODE, L"Disassembly failed" },
33 { ERR::CPU_UNKNOWN_VENDOR, L"CPU vendor unknown" }
34 };
35 STATUS_ADD_DEFINITIONS(cpuStatusDefinitions);
36
37
38 // ensure the actual pointer size matches expectations on the most common
39 // architectures (IA-32 and AMD64) - just in case the predefined macros
40 // are wrong or misleading.
41 #if ARCH_IA32
42 cassert(sizeof(void*) == 4);
43 #elif ARCH_AMD64
44 cassert(sizeof(void*) == 8);
45 cassert(sizeof(i64) == sizeof(intptr_t));
46 #endif
47 cassert(sizeof(void*) == sizeof(intptr_t));
48
49
50
TestCAS64()51 static void TestCAS64()
52 {
53 volatile i64 var = 1;
54 cpu_CAS64(&var, 1ull, 2ull);
55 ENSURE(var == 2ull);
56 }
57
TestAtomicAdd()58 static void TestAtomicAdd()
59 {
60 volatile intptr_t i1 = 1;
61 intptr_t prev = cpu_AtomicAdd(&i1, 1);
62 ENSURE(prev == 1);
63 ENSURE(i1 == 2);
64 }
65
cpu_Test()66 void cpu_Test()
67 {
68 TestCAS64();
69 TestAtomicAdd();
70 }
71