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/* Copyright (C) 2010 Wildfire Games.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* CPU and memory detection.
*/
#include "precompiled.h"
#include "lib/sysdep/cpu.h"
static const StatusDefinition cpuStatusDefinitions[] = {
{ ERR::CPU_FEATURE_MISSING, L"This CPU doesn't support a required feature" },
{ ERR::CPU_UNKNOWN_OPCODE, L"Disassembly failed" },
{ ERR::CPU_UNKNOWN_VENDOR, L"CPU vendor unknown" }
};
STATUS_ADD_DEFINITIONS(cpuStatusDefinitions);
// ensure the actual pointer size matches expectations on the most common
// architectures (IA-32 and AMD64) - just in case the predefined macros
// are wrong or misleading.
#if ARCH_IA32
cassert(sizeof(void*) == 4);
#elif ARCH_AMD64
cassert(sizeof(void*) == 8);
cassert(sizeof(i64) == sizeof(intptr_t));
#endif
cassert(sizeof(void*) == sizeof(intptr_t));
static void TestCAS64()
{
volatile i64 var = 1;
cpu_CAS64(&var, 1ull, 2ull);
ENSURE(var == 2ull);
}
static void TestAtomicAdd()
{
volatile intptr_t i1 = 1;
intptr_t prev = cpu_AtomicAdd(&i1, 1);
ENSURE(prev == 1);
ENSURE(i1 == 2);
}
void cpu_Test()
{
TestCAS64();
TestAtomicAdd();
}
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