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* fhandler_proc.cc (format_proc_cpuinfo): Test CPU vendor and print 

AMD specific 3dnow capabilities.
This commit is contained in:
Corinna Vinschen 2004-06-23 16:09:32 +00:00
parent 98767b49a0
commit c624912e3e
2 changed files with 33 additions and 0 deletions
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5
winsup/cygwin/ChangeLog
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@ -1,3 +1,8 @@
2004-06-23 Tomas Ukkonen <tomas.ukkonen@iki.fi>
* fhandler_proc.cc (format_proc_cpuinfo): Test CPU vendor and print
AMD specific 3dnow capabilities.
2004-06-23 Pierre Humblet <pierre.humblet@ieee.org>
* fhandler_socket.cc (fhandler_socket::release): Call

28
winsup/cygwin/fhandler_proc.cc
View File

@ -698,6 +698,14 @@ format_proc_cpuinfo (char *destbuf, size_t maxsize)
cpuid (&maxf, &vendor_id[0], &vendor_id[2], &vendor_id[1], 0);
maxf &= 0xffff;
vendor_id[3] = 0;
// vendor identification
bool is_amd = false, is_intel = false;
if (!strcmp ((char*)vendor_id, "AuthenticAMD"))
is_amd = true;
else if (!strcmp ((char*)vendor_id, "GenuineIntel"))
is_intel = true;
bufptr += __small_sprintf (bufptr, "vendor_id : %s\n", (char *)vendor_id);
unsigned cpu_mhz = 0;
if (wincap.is_winnt ())
@ -865,6 +873,26 @@ format_proc_cpuinfo (char *destbuf, size_t maxsize)
print (" tm2");
if (features2 & (1 << 10))
print (" cid");
if (is_amd)
{
// uses AMD extended calls to check
// for 3dnow and 3dnow extended support
// (source: AMD Athlon Processor Recognition Application Note)
unsigned int a = 0, b, c, d;
cpuid (&a, &b, &c, &d, 0x80000000);
if (a >= 0x80000001) // has basic capabilities
{
cpuid (&a, &b, &c, &d, 0x80000001);
if(d & (1 << 30)) // 31th bit is on
print (" 3dnowext");
if(d & (1 << 31)) // 32th bit (highest) is on
print (" 3dnow");
}
}
}
else if (wincap.is_winnt ())
{