1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
// This file is part of Golly.
// See docs/License.html for the copyright notice.
/**
* This file holds things that are platform-dependent such as
* dependencies on 64-bitness, help for when the platform does not
* have inttypes.h, and things like that.
*
* We need to convert pointers to integers and back for two
* reasons. First, hlife structures use the address of a node
* as its label, and we need to hash these labels. Secondly,
* we use bit tricks for garbage collection and need to set and
* clear low-order bits in a pointer. Normally the typedef
* below is all we need, but if your platform doesn't have
* uintptr_t you can change that here. We also need this type
* for anything that might hold the *count* of nodes, since
* this might be larger than an int. If inttypes does not
* exist, and you're compiling for a 64-bit platform, you may
* need to make some changes here.
*/
#include <limits.h>
#if defined(_WIN64)
#define PRIuPTR "I64u"
typedef uintptr_t g_uintptr_t ;
#define G_MAX SIZE_MAX
#define GOLLY64BIT (1)
#elif defined(__LP64__) || defined(__amd64__)
#define __STDC_FORMAT_MACROS
#define __STDC_LIMIT_MACROS
#include <inttypes.h>
#include <stdint.h>
typedef uintptr_t g_uintptr_t ;
#define G_MAX SIZE_MAX
#define GOLLY64BIT (1)
#else
#define PRIuPTR "u"
typedef unsigned int g_uintptr_t ;
#define G_MAX UINT_MAX
#undef GOLLY64BIT
#endif
#define USEPREFETCH (1)
// note that _WIN32 is also defined when compiling for 64-bit Windows
#ifdef _WIN32
#include <mmintrin.h>
#include <xmmintrin.h>
#define PREFETCH(a) _mm_prefetch((const char *)a, _MM_HINT_T0)
#else
#define PREFETCH(a) __builtin_prefetch(a)
#endif
|
