diff options
| author | Chris Robinson <[email protected]> | 2012-10-07 05:36:25 -0700 |
|---|---|---|
| committer | Chris Robinson <[email protected]> | 2012-10-07 05:36:25 -0700 |
| commit | 6b870714a91c9607acc4501234a00c7c94fa2b85 (patch) | |
| tree | 04d0ae8cf35cb357a21a63bba7d420e3dee794be /Alc/helpers.c | |
| parent | 708f3ccc3d457499ac046a009a7c3317b31a2b4b (diff) | |
Use __cpuid from intrin.h in Windows when available
Diffstat (limited to 'Alc/helpers.c')
| -rw-r--r-- | Alc/helpers.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Alc/helpers.c b/Alc/helpers.c index 262c2551..6eff516e 100644 --- a/Alc/helpers.c +++ b/Alc/helpers.c @@ -54,6 +54,9 @@ DEFINE_DEVPROPKEY(DEVPKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80, #ifdef HAVE_DLFCN_H #include <dlfcn.h> #endif +#ifdef HAVE_INTRIN_H +#include <intrin.h> +#endif #ifdef HAVE_CPUID_H #include <cpuid.h> #endif @@ -109,6 +112,36 @@ void FillCPUCaps(ALuint capfilter) #endif } } +#elif defined(HAVE___CPUID) + union { + int regs[4]; + char str[sizeof(int[4])]; + } cpuinf[3]; + unsigned int maxfunc = 0; + unsigned int maxextfunc = 0; + + (__cpuid)(cpuinf[0].regs, 0); + maxfunc = cpuinf[0].regs[0]; + + (__cpuid)(cpuinf[0].regs, 0x80000000); + maxextfunc = cpuinf[0].regs[0]; + TRACE("Detected max CPUID function: 0x%x (ext. 0x%x)\n", maxfunc, maxextfunc); + + TRACE("Vendor ID: \"%.4s%.4s%.4s\"\n", cpuinf[0].str+4, cpuinf[0].str+12, cpuinf[0].str+8); + if(maxextfunc >= 0x80000004) + { + (__cpuid)(cpuinf[0].regs, 0x80000002); + (__cpuid)(cpuinf[1].regs, 0x80000003); + (__cpuid)(cpuinf[2].regs, 0x80000004); + TRACE("Name: \"%.16s%.16s%.16s\"\n", cpuinf[0].str, cpuinf[1].str, cpuinf[2].str); + } + + if(maxfunc >= 1) + { + (__cpuid)(cpuinf[0].regs, 1); + if((cpuinf[0].regs[3]&(1<<25))) + caps |= CPU_CAP_SSE; + } #endif #endif #ifdef HAVE_NEON |