Mercurial > foo_out_sdl

comparison foosdk/sdk/pfc/cpuid.cpp @ 1:20d02a178406 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
*: check in everything else yay
author Paper <paper@tflc.us>
date Mon, 05 Jan 2026 02:15:46 -0500
parents
children
comparison
equal deleted inserted replaced
0:e9bb126753e7 1:20d02a178406
1 #include "pfc-lite.h"
2 #include "cpuid.h"
3
4
5 #ifdef _MSC_VER
6 #include <intrin.h>
7 #endif
8
9 #if PFC_HAVE_CPUID
10 namespace pfc {
11
12 bool query_cpu_feature_set(unsigned p_value) {
13
14 #ifdef __AVX__
15 // AVX implies all supported values are set
16 return true;
17 #else
18
19 #if _M_IX86_FP >= 2 || defined(_M_X64)
20 // don't bother checking for SSE/SSE2 if compiled to use them
21 p_value &= ~(CPU_HAVE_SSE | CPU_HAVE_SSE2);
22 if (p_value == 0) return true;
23 #endif
24
25 #ifdef _MSC_VER
26 __try {
27 #endif
28 if (p_value & (CPU_HAVE_SSE | CPU_HAVE_SSE2 | CPU_HAVE_SSE3 | CPU_HAVE_SSSE3 | CPU_HAVE_SSE41 | CPU_HAVE_SSE42 | CPU_HAVE_AVX)) {
29 int buffer[4];
30 __cpuid(buffer,1);
31 if (p_value & CPU_HAVE_SSE) {
32 if ((buffer[3]&(1<<25)) == 0) return false;
33 }
34 if (p_value & CPU_HAVE_SSE2) {
35 if ((buffer[3]&(1<<26)) == 0) return false;
36 }
37 if (p_value & CPU_HAVE_SSE3) {
38 if ((buffer[2]&(1<<0)) == 0) return false;
39 }
40 if (p_value & CPU_HAVE_SSSE3) {
41 if ((buffer[2]&(1<<9)) == 0) return false;
42 }
43 if (p_value & CPU_HAVE_SSE41) {
44 if ((buffer[2]&(1<<19)) == 0) return false;
45 }
46 if (p_value & CPU_HAVE_SSE42) {
47 if ((buffer[2]&(1<<20)) == 0) return false;
48 }
49 if (p_value & CPU_HAVE_AVX) {
50 if ((buffer[2] & (1 << 28)) == 0) return false;
51 }
52 }
53 return true;
54 #ifdef _MSC_VER
55 } __except(1) {
56 return false;
57 }
58 #endif
59 #endif
60 }
61 }
62
63 #endif
64
65 namespace pfc {
66 const char* cpuArch() {
67 #ifdef PFC_CPU_ARCH
68 return PFC_CPU_ARCH;
69 #else
70 return "Unknown";
71 #endif
72 }
73 }