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/**
* \file os_is64bit.c
* \brief Native code-side checking for a 64-bit architecture.
* \author Copyright (c) 2011 Jason Perkins and the Premake project
*/
#include "premake.h"
#if PLATFORM_WINDOWS
typedef BOOL(WINAPI* WowFuncSig)(HANDLE, PBOOL);
#endif
int os_is64bit(lua_State* L)
{
#if PLATFORM_WINDOWS
HMODULE hKrnl32 = GetModuleHandle(TEXT("kernel32"));
#endif
if (sizeof(void*) == 8) // our premake build is 64-bit, so the runtime environment must be also (at least) 64-bit ...
{
lua_pushboolean(L, 1);
return 1;
}
// If this code returns true, then the platform is 64-bit. If it
// returns false, the platform might still be 64-bit, but more
// checking will need to be done on the Lua side of things.
#if PLATFORM_WINDOWS
if (hKrnl32)
{
WowFuncSig func = (WowFuncSig)GetProcAddress(hKrnl32, "IsWow64Process");
if (func)
{
BOOL isWow = FALSE;
if (func(GetCurrentProcess(), &isWow))
{
lua_pushboolean(L, isWow);
return 1;
}
}
}
#endif
lua_pushboolean(L, 0);
return 1;
}
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