diff options
| author | Corinna Vinschen <corinna@vinschen.de> | 2004-06-23 20:09:32 +0400 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2004-06-23 20:09:32 +0400 |
| commit | c624912e3e80fca3f5f8eafe7d253128a76acaa1 (patch) | |
| tree | ee8c34129fc36e0095f282517f87f68f1615d912 | |
| parent | 98767b49a03b7aa8d37a173bd2aafcea5a505390 (diff) | |
* fhandler_proc.cc (format_proc_cpuinfo): Test CPU vendor and print
AMD specific 3dnow capabilities.
| -rw-r--r-- | winsup/cygwin/ChangeLog | 5 | ||||
| -rw-r--r-- | winsup/cygwin/fhandler_proc.cc | 28 |
2 files changed, 33 insertions, 0 deletions
diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog index fe1b730ea..7af3e9c83 100644 --- a/winsup/cygwin/ChangeLog +++ b/winsup/cygwin/ChangeLog @@ -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 diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc index 0331314e1..20b6633ea 100644 --- a/winsup/cygwin/fhandler_proc.cc +++ b/winsup/cygwin/fhandler_proc.cc @@ -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 ()) { |