UserModeException.c File Reference

#include "precomp.h"
#include <pseh/pseh2.h>

Include dependency graph for UserModeException.c:

Go to the source code of this file.

Classes
struct	_TEST_ENTRY

Macros
#define	CPU_FEATURE_VMX   0x01
#define	CPU_FEATURE_HV   0x02
#define	FL_INVALID   0
#define	FL_AMD   0x01
#define	FL_INTEL   0x02
#define	FL_CYRIX   0x04
#define	FL_VIA   0x08
#define	FL_TM   0x10
#define	FL_ANY   (FL_AMD | FL_INTEL | FL_CYRIX | FL_VIA | FL_TM)
#define	FL_VMX   0x20
#define	FL_HV   0x40
#define	FL_PRIV   0x100
#define	FL_ACC   0x200
#define	FL_INVLS   0x400

Typedefs
typedef enum _CPU_VENDOR	CPU_VENDOR
typedef void(*	PFUNC) (void)
typedef struct _TEST_ENTRY	TEST_ENTRY
typedef struct _TEST_ENTRY *	PTEST_ENTRY

Enumerations
enum	_CPU_VENDOR {   CPU_VENDOR_INTEL , CPU_VENDOR_AMD , CPU_VENDOR_CYRIX , CPU_VENDOR_VIA ,   CPU_VENDOR_TRANSMETA , CPU_VENDOR_UNKNOWN }

Functions
static CPU_VENDOR	DetermineCpuVendor (void)
static void	DetermineCpuFeatures (void)
void	Test_SingleInstruction (PVOID RwxMemory, PTEST_ENTRY TestEntry)
static void	Test_InstructionFaults (void)
	START_TEST (UserModeException)

Variables
CPU_VENDOR	g_CpuVendor
ULONG	g_CpuFeatures
TEST_ENTRY	TestEntries []

Macro Definition Documentation

CPU_FEATURE_HV

#define CPU_FEATURE_HV   0x02

Definition at line 25 of file UserModeException.c.

CPU_FEATURE_VMX

#define CPU_FEATURE_VMX   0x01

Definition at line 24 of file UserModeException.c.

FL_ACC

#define FL_ACC   0x200

Definition at line 41 of file UserModeException.c.

FL_AMD

#define FL_AMD   0x01

Definition at line 30 of file UserModeException.c.

FL_ANY

#define FL_ANY   (FL_AMD | FL_INTEL | FL_CYRIX | FL_VIA | FL_TM)

Definition at line 35 of file UserModeException.c.

FL_CYRIX

#define FL_CYRIX   0x04

Definition at line 32 of file UserModeException.c.

FL_HV

#define FL_HV   0x40

Definition at line 38 of file UserModeException.c.

FL_INTEL

#define FL_INTEL   0x02

Definition at line 31 of file UserModeException.c.

FL_INVALID

#define FL_INVALID   0

Definition at line 29 of file UserModeException.c.

FL_INVLS

#define FL_INVLS   0x400

Definition at line 42 of file UserModeException.c.

FL_PRIV

#define FL_PRIV   0x100

Definition at line 40 of file UserModeException.c.

FL_TM

#define FL_TM   0x10

Definition at line 34 of file UserModeException.c.

FL_VIA

#define FL_VIA   0x08

Definition at line 33 of file UserModeException.c.

FL_VMX

#define FL_VMX   0x20

Definition at line 37 of file UserModeException.c.

Typedef Documentation

CPU_VENDOR

typedef enum _CPU_VENDOR CPU_VENDOR

PFUNC

typedef void(* PFUNC) (void)

Definition at line 27 of file UserModeException.c.

PTEST_ENTRY

typedef struct _TEST_ENTRY * PTEST_ENTRY

TEST_ENTRY

typedef struct _TEST_ENTRY TEST_ENTRY

Enumeration Type Documentation

_CPU_VENDOR

enum _CPU_VENDOR

Enumerator
CPU_VENDOR_INTEL
CPU_VENDOR_AMD
CPU_VENDOR_CYRIX
CPU_VENDOR_VIA
CPU_VENDOR_TRANSMETA
CPU_VENDOR_UNKNOWN

Definition at line 11 of file UserModeException.c.

{
    CPU_VENDOR_INTEL,
    CPU_VENDOR_AMD,
    CPU_VENDOR_CYRIX,
    CPU_VENDOR_VIA,
    CPU_VENDOR_TRANSMETA,
    CPU_VENDOR_UNKNOWN
} CPU_VENDOR;

Function Documentation

DetermineCpuFeatures()

static void DetermineCpuFeatures ( void  )

static

Definition at line 98 of file UserModeException.c.

{
    INT CpuInfo[4];
    ULONG Features = 0;
 
    g_CpuVendor = DetermineCpuVendor();
 
    __cpuid(CpuInfo, 1);
    if (CpuInfo[2] & (1 << 5)) Features |= CPU_FEATURE_VMX;
    if (CpuInfo[2] & (1 << 31)) Features |= CPU_FEATURE_HV;
    trace("CPUID 1: 0x%x, 0x%x, 0x%x, 0x%x\n", CpuInfo[0], CpuInfo[1], CpuInfo[2], CpuInfo[3]);
 
    g_CpuFeatures = Features;
}

Referenced by START_TEST().

DetermineCpuVendor()

static CPU_VENDOR DetermineCpuVendor ( void  )

static

Definition at line 54 of file UserModeException.c.

{
    INT CpuInfo[4];
    union
    {
        INT ShuffledInts[3];
        CHAR VendorString[13];
    } Vendor;
 
    __cpuid(CpuInfo, 0);
    Vendor.ShuffledInts[0] = CpuInfo[1];
    Vendor.ShuffledInts[1] = CpuInfo[3];
    Vendor.ShuffledInts[2] = CpuInfo[2];
    Vendor.VendorString[12] = 0;
    trace("Vendor: %s\n", Vendor.VendorString);
 
    if (strcmp(Vendor.VendorString, "GenuineIntel") == 0)
    {
        return CPU_VENDOR_INTEL;
    }
    else if (strcmp(Vendor.VendorString, "AuthenticAMD") == 0)
    {
        return CPU_VENDOR_AMD;
    }
    else if (strcmp(Vendor.VendorString, "CyrixInstead") == 0)
    {
        return CPU_VENDOR_CYRIX;
    }
    else if (strcmp(Vendor.VendorString, "CentaurHauls") == 0)
    {
        return CPU_VENDOR_VIA;
    }
    else if (strcmp(Vendor.VendorString, "GenuineTMx86") == 0)
    {
        return CPU_VENDOR_TRANSMETA;
    }
    else
    {
        return CPU_VENDOR_UNKNOWN;
    }
}

Referenced by DetermineCpuFeatures().

START_TEST()

START_TEST

(

UserModeException

)

Definition at line 319 of file UserModeException.c.

{
    DetermineCpuFeatures();
 
    Test_InstructionFaults();
}

Test_InstructionFaults()

static void Test_InstructionFaults ( void  )

static

Definition at line 294 of file UserModeException.c.

{
    PVOID RwxMemory;
    ULONG i;
 
    /* Allocate a page of RWX memory */
    RwxMemory = VirtualAlloc(NULL,
                             PAGE_SIZE,
                             MEM_RESERVE | MEM_COMMIT,
                             PAGE_EXECUTE_READWRITE);
    ok(RwxMemory != NULL, "Failed to allocate RWX memory!\n");
    if (RwxMemory == NULL)
    {
        return;
    }
 
    for (i = 0; i < ARRAYSIZE(TestEntries); i++)
    {
        Test_SingleInstruction(RwxMemory, &TestEntries[i]);
    }
 
    /* Clean up */
    VirtualFree(RwxMemory, 0, MEM_RELEASE);
}

Referenced by START_TEST().

Test_SingleInstruction()

void Test_SingleInstruction	(	PVOID	RwxMemory,
		PTEST_ENTRY	TestEntry
	)

Definition at line 201 of file UserModeException.c.

{
    PEXCEPTION_POINTERS ExcPtrs;
    EXCEPTION_RECORD ExceptionRecord;
    NTSTATUS ExpectedStatus, Status = STATUS_SUCCESS;
    PFUNC Func = (PFUNC)RwxMemory;
    ULONG Flags;
 
    RtlZeroMemory(&ExceptionRecord, sizeof(ExceptionRecord));
 
    RtlCopyMemory(RwxMemory,
                  TestEntry->InstructionBytes,
                  sizeof(TestEntry->InstructionBytes));
 
    _SEH2_TRY
    {
        Func();
    }
    _SEH2_EXCEPT(ExcPtrs = _SEH2_GetExceptionInformation(),
                 ExceptionRecord = *ExcPtrs->ExceptionRecord,
                 EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END;
 
    Flags = TestEntry->Flags;
#ifdef _M_IX86
    if (Flags & FL_INVLS)
    {
        ExpectedStatus = STATUS_INVALID_LOCK_SEQUENCE;
    }
    else
#endif
    if (((g_CpuVendor == CPU_VENDOR_INTEL) && !(Flags & FL_INTEL)) ||
        ((g_CpuVendor == CPU_VENDOR_AMD) && !(Flags & FL_AMD)) ||
        ((g_CpuVendor == CPU_VENDOR_CYRIX) && !(Flags & FL_CYRIX)) ||
        ((g_CpuVendor == CPU_VENDOR_VIA) && !(Flags & FL_VIA)))
    {
        ExpectedStatus = STATUS_ILLEGAL_INSTRUCTION;
    }
    else if (((Flags & FL_VMX) && !(g_CpuFeatures & CPU_FEATURE_VMX)) ||
             ((Flags & FL_HV) && !(g_CpuFeatures & CPU_FEATURE_HV)))
    {
        ExpectedStatus = STATUS_ILLEGAL_INSTRUCTION;
    }
    else if (Flags & FL_PRIV)
    {
        ExpectedStatus = STATUS_PRIVILEGED_INSTRUCTION;
    }
    else if (Flags & FL_ACC)
    {
        ExpectedStatus = STATUS_ACCESS_VIOLATION;
    }
    else
    {
        ExpectedStatus = STATUS_SUCCESS;
    }
 
    ok_hex_(__FILE__, TestEntry->Line, Status, ExpectedStatus);
    ok_hex_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionCode, Status);
    ok_hex_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionFlags, 0);
    ok_ptr_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionRecord, NULL);
 
    if (Status == STATUS_SUCCESS)
    {
        ok_ptr_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionAddress, NULL);
    }
    else
    {
        ok_ptr_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionAddress, (PUCHAR)Func + TestEntry->ExpectedAddressOffset);
    }
 
    if (Status == STATUS_ACCESS_VIOLATION)
    {
        ok_dec_(__FILE__, TestEntry->Line, ExceptionRecord.NumberParameters, 2);
        ok_size_t_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionInformation[0], 0);
        ok_size_t_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionInformation[1], (LONG_PTR)-1);
    }
    else
    {
        ok_dec_(__FILE__, TestEntry->Line, ExceptionRecord.NumberParameters, 0);
#if 0 // FIXME: These are inconsistent between Windows versions (simply uninitialized?)
        ok_size_t_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionInformation[0], 0);
        ok_size_t_(__FILE__, TestEntry->Line, ExceptionRecord.ExceptionInformation[1], 0);
#endif
    }
}

Referenced by Test_InstructionFaults().

Variable Documentation

g_CpuFeatures

ULONG g_CpuFeatures

Definition at line 22 of file UserModeException.c.

Referenced by DetermineCpuFeatures(), and Test_SingleInstruction().

g_CpuVendor

CPU_VENDOR g_CpuVendor

Definition at line 21 of file UserModeException.c.

Referenced by DetermineCpuFeatures(), and Test_SingleInstruction().

TestEntries

TEST_ENTRY TestEntries[]

Definition at line 113 of file UserModeException.c.

Referenced by Test_InstructionFaults().