[src/trunk]: src/sys/arch/x86/include Fix the comments about cpuid flags, acc...

[jym <jym%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8682cdcd5ce4
branches:  trunk
changeset: 753620:8682cdcd5ce4
user:      jym <jym%NetBSD.org@localhost>
date:      Sat Apr 03 23:17:05 2010 +0000

description:
Fix the comments about cpuid flags, according cpuid documentation by
Intel and AMD.

diffstat:

 sys/arch/x86/include/specialreg.h |  19 ++++++-------------
 1 files changed, 6 insertions(+), 13 deletions(-)

diffs (58 lines):

diff -r ca53a804c075 -r 8682cdcd5ce4 sys/arch/x86/include/specialreg.h
--- a/sys/arch/x86/include/specialreg.h Sat Apr 03 19:01:15 2010 +0000
+++ b/sys/arch/x86/include/specialreg.h Sat Apr 03 23:17:05 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: specialreg.h,v 1.38 2010/01/13 12:54:49 cegger Exp $   */
+/*     $NetBSD: specialreg.h,v 1.39 2010/04/03 23:17:05 jym Exp $      */
 
 /*-
  * Copyright (c) 1991 The Regents of the University of California.
@@ -87,7 +87,7 @@
  * CPUID "features" bits in %edx
  */
 
-/* Fn80000001 %edx feature */
+/* Fn00000001 %edx feature */
 #define        CPUID_FPU       0x00000001      /* processor has an FPU? */
 #define        CPUID_VME       0x00000002      /* has virtual mode (%cr4's VME/PVI) */
 #define        CPUID_DE        0x00000004      /* has debugging extension */
@@ -127,26 +127,20 @@
                            "\30MMX\31FXSR\32SSE\33SSE2\34SS\35HTT\36TM" \
                            "\37IA64\40SBF"
 
-/*
- * CPUID Intel extended features - %EDX
- */
+/* Intel Fn80000001 extended features - %edx */
 #define CPUID_SYSCALL  0x00000800      /* SYSCALL/SYSRET */
 #define CPUID_XD       0x00100000      /* Execute Disable */
 #define CPUID_EM64T    0x20000000      /* Intel EM64T */
 
 #define CPUID_INTEL_EXT_FLAGS  "\20\14SYSCALL/SYSRET\25XD\36EM64T"
 
-/*
- * CPUID Intel extended features - %ECX
- */
+/* Intel Fn80000001 extended features - %ecx */
 #define        CPUID_LAHF      0x00000001      /* LAHF/SAHF in IA-32e mode, 64bit sub*/
 
 #define        CPUID_INTEL_FLAGS4      "\20\1LAHF"
 
-/*
- * AMD/VIA processor specific flags.
- */
 
+/* AMD/VIA Fn80000001 extended features - %edx */
 /*     CPUID_SYSCALL                      SYSCALL/SYSRET */
 #define CPUID_MPC      0x00080000      /* Multiprocessing Capable */
 #define CPUID_NOX      0x00100000      /* No Execute Page Protection */
@@ -161,8 +155,7 @@
 #define CPUID_EXT_FLAGS        "\20\14SYSCALL/SYSRET\24MPC\25NOX\27MXX\32FFXSR" \
                            "\33P1GB\34RDTSCP\36LONG\0373DNOW2\0403DNOW"
 
-
-/* AMD Fn80000001 %ecx features */
+/* AMD Fn80000001 extended features - %ecx */
 #define CPUID_LAHF     0x00000001      /* LAHF/SAHF instruction */
 #define CPUID_CMPLEGACY        0x00000002      /* Compare Legacy */
 #define CPUID_SVM      0x00000004      /* Secure Virtual Machine */