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| author | arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2003-01-09 18:39:09 +0000 |
|---|---|---|
| committer | arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2003-01-09 18:39:09 +0000 |
| commit | 3a250d3760fd3a7abae66ebda4b5ea5c6387a1aa (patch) | |
| tree | 2225026b2c6c5f2154e8a14d03b265b0e8588130 /cpudetect.c | |
| parent | 88aee88ab5e91e5f3c804114a5743fd564d1a198 (diff) | |
| download | mpv-3a250d3760fd3a7abae66ebda4b5ea5c6387a1aa.tar.bz2 mpv-3a250d3760fd3a7abae66ebda4b5ea5c6387a1aa.tar.xz | |
cpu cache line length detection
from mplayerxp (Nick Kurshev <nickols_k@mail.ru>)
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8861 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'cpudetect.c')
| -rw-r--r-- | cpudetect.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/cpudetect.c b/cpudetect.c index 4e9b91f40d..ffc56d8f74 100644 --- a/cpudetect.c +++ b/cpudetect.c @@ -98,9 +98,9 @@ void GetCpuCaps( CpuCaps *caps) unsigned int regs[4]; unsigned int regs2[4]; - caps->isX86=1; - memset(caps, 0, sizeof(*caps)); + caps->isX86=1; + caps->cl_size=32; /* default */ if (!has_cpuid()) { mp_msg(MSGT_CPUDETECT,MSGL_WARN,"CPUID not supported!??? (maybe an old 486?)\n"); return; @@ -111,6 +111,7 @@ void GetCpuCaps( CpuCaps *caps) if (regs[0]>=0x00000001) { char *tmpstr; + unsigned cl_size; do_cpuid(0x00000001, regs2); @@ -132,6 +133,8 @@ void GetCpuCaps( CpuCaps *caps) caps->hasSSE = (regs2[3] & (1 << 25 )) >> 25; // 0x2000000 caps->hasSSE2 = (regs2[3] & (1 << 26 )) >> 26; // 0x4000000 caps->hasMMX2 = caps->hasSSE; // SSE cpus supports mmxext too + cl_size = ((regs2[1] >> 8) & 0xFF)*8; + if(cl_size) caps->cl_size = cl_size; } do_cpuid(0x80000000, regs); if (regs[0]>=0x80000001) { @@ -142,6 +145,13 @@ void GetCpuCaps( CpuCaps *caps) caps->has3DNow = (regs2[3] & (1 << 31 )) >> 31; //0x80000000 caps->has3DNowExt = (regs2[3] & (1 << 30 )) >> 30; } + if(regs[0]>=0x80000006) + { + do_cpuid(0x80000006, regs2); + mp_msg(MSGT_CPUDETECT,MSGL_V,"extended cache-info: %d\n",regs2[2]&0x7FFFFFFF); + caps->cl_size = regs2[2] & 0xFF; + } + mp_msg(MSGT_CPUDETECT,MSGL_INFO,"Detected cache-line size is %u bytes\n",caps->cl_size); #if 0 mp_msg(MSGT_CPUDETECT,MSGL_INFO,"cpudetect: MMX=%d MMX2=%d SSE=%d SSE2=%d 3DNow=%d 3DNowExt=%d\n", gCpuCaps.hasMMX, |