139 lines
2.4 KiB
C
139 lines
2.4 KiB
C
|
/*++
|
||
|
|
|
||
|
|
Copyright (c) 1992 Microsoft Corporation
|
||
|
|
|
||
|
|
Module Name:
|
||
|
|
|
||
|
|
pat.c
|
||
|
|
|
||
|
|
Abstract:
|
||
|
|
|
||
|
|
WinDbg Extension Api
|
||
|
|
|
||
|
|
Author:
|
||
|
|
|
||
|
|
Shivnandan Kaushik Aug 1997
|
||
|
|
|
||
|
|
Environment:
|
||
|
|
|
||
|
|
User Mode.
|
||
|
|
|
||
|
|
Revision History:
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
#include "precomp.h"
|
||
|
|
#include "i386.h"
|
||
|
|
#pragma hdrstop
|
||
|
|
|
||
|
|
//
|
||
|
|
// PAT MSR architecture definitions
|
||
|
|
//
|
||
|
|
|
||
|
|
//
|
||
|
|
// PAT model specific register
|
||
|
|
//
|
||
|
|
|
||
|
|
#define PAT_MSR 0x277
|
||
|
|
|
||
|
|
//
|
||
|
|
// PAT memory attributes
|
||
|
|
//
|
||
|
|
|
||
|
|
#define PAT_TYPE_STRONG_UC 0 // corresponds to PPro PCD=1,PWT=1
|
||
|
|
#define PAT_TYPE_USWC 1
|
||
|
|
#define PAT_TYPE_WT 4
|
||
|
|
#define PAT_TYPE_WP 5
|
||
|
|
#define PAT_TYPE_WB 6
|
||
|
|
#define PAT_TYPE_WEAK_UC 7 // corresponds to PPro PCD=1,PWT=0
|
||
|
|
#define PAT_TYPE_MAX 8
|
||
|
|
|
||
|
|
#include "pshpack1.h"
|
||
|
|
|
||
|
|
typedef union _PAT {
|
||
|
|
struct {
|
||
|
|
UCHAR Pat[8];
|
||
|
|
} hw;
|
||
|
|
ULONGLONG QuadPart;
|
||
|
|
} PAT, *PPAT;
|
||
|
|
|
||
|
|
#include "poppack.h"
|
||
|
|
|
||
|
|
//
|
||
|
|
// ----------------------------------------------------------------
|
||
|
|
//
|
||
|
|
|
||
|
|
DECLARE_API( pat )
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Dumps processors pat
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
args - none
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
None
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
static PUCHAR Type[] = {
|
||
|
|
// 0 1 2 3 4
|
||
|
|
"STRONG_UC","USWC ","???? ","???? ","WT ",
|
||
|
|
// 5 6 7
|
||
|
|
"WP ","WB ","WEAK_UC "};
|
||
|
|
PAT Attributes;
|
||
|
|
ULONG i;
|
||
|
|
PUCHAR p;
|
||
|
|
ULONG fb;
|
||
|
|
ULONG Index;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Quick sanity check
|
||
|
|
//
|
||
|
|
|
||
|
|
// X86_ONLY_API
|
||
|
|
if (TargetMachine != IMAGE_FILE_MACHINE_I386) {
|
||
|
|
dprintf("!pat is X86 only API.\n");
|
||
|
|
return E_INVALIDARG;
|
||
|
|
}
|
||
|
|
|
||
|
|
i = (ULONG) GetExpression(args);
|
||
|
|
|
||
|
|
if (i != 1) {
|
||
|
|
i = (ULONG) GetExpression("KeFeatureBits");
|
||
|
|
if (!i) {
|
||
|
|
dprintf ("KeFeatureBits not found\n");
|
||
|
|
return E_INVALIDARG;
|
||
|
|
}
|
||
|
|
|
||
|
|
fb = 0;
|
||
|
|
ReadMemory(i, &fb, sizeof(i), &i);
|
||
|
|
if (fb == -1 || !(fb & KF_PAT_X86)) {
|
||
|
|
dprintf ("PAT feature not present\n");
|
||
|
|
return E_INVALIDARG;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Dump PAT
|
||
|
|
//
|
||
|
|
|
||
|
|
ReadMsr(PAT_MSR, &Attributes.QuadPart);
|
||
|
|
|
||
|
|
dprintf("PAT_Index PCD PWT Memory Type\n");
|
||
|
|
for (Index = 0; Index < 8; Index++) {
|
||
|
|
p = "????";
|
||
|
|
if (Attributes.hw.Pat[Index] < PAT_TYPE_MAX) {
|
||
|
|
p = Type[Attributes.hw.Pat[Index]];
|
||
|
|
}
|
||
|
|
dprintf("%d %d %d %s\n",(Index/4)%2,
|
||
|
|
(Index/2)%2,Index%2,p);
|
||
|
|
}
|
||
|
|
return S_OK;
|
||
|
|
}
|