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140 lines
4.8 KiB
140 lines
4.8 KiB
/*++
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Copyright (c) Microsoft Corporation. All rights reserved.
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Module Name:
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ntrtloverflow.h
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Abstract:
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32bit/64bit signed/unsigned add/multiply with overflow checking
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Author:
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Jay Krell (JayKrell) March 2002
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Environment:
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anywhere
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Revision History:
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--*/
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#ifndef _NTRTLOVERFLOW_
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#define _NTRTLOVERFLOW_
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#if (_MSC_VER > 1020)
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#pragma once
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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//
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// add functions are FORCEINLINE in ntrtl.h
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//
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//
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// *pc = a * b
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// return value is STATUS_INTEGER_OVERFLOW or STATUS_SUCCESS
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//
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NTSYSAPI
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NTSTATUS
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NTAPI
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RtlMultiplyWithOverflowCheckSigned32(
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__int32 * pc,
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__int32 a,
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__int32 b
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);
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// not implemented
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// NTSYSAPI
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// NTSTATUS
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// NTAPI
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// RtlMultiplyWithOverflowCheckSigned64(
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// __int64 * pc,
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// __int64 a,
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// __int64 b
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// );
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//
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// *pc = a * b
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// return value is STATUS_INTEGER_OVERFLOW or STATUS_SUCCESS
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//
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NTSYSAPI
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NTSTATUS
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NTAPI
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RtlMultiplyWithOverflowCheckUnsigned32(
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unsigned __int32 * pc,
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unsigned __int32 a,
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unsigned __int32 b
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);
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//
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// *pc = a * b
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// return value is STATUS_INTEGER_OVERFLOW or STATUS_SUCCESS
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//
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NTSYSAPI
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NTSTATUS
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NTAPI
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RtlMultiplyWithOverflowCheckUnsigned64(
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unsigned __int64 * pc,
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unsigned __int64 a,
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unsigned __int64 b
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);
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#define RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK(type, base) ((NTSTATUS (NTAPI * )(type *, type, type))base)
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#define RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED32(type) \
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RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK(type, RtlMultiplyWithOverflowCheckUnsigned32)
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#define RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED64(type) \
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RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK(type, RtlMultiplyWithOverflowCheckUnsigned64)
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#define RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED32(type) \
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RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK(type, RtlMultiplyWithOverflowCheckSigned32)
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// signed64 not implemented
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#if !defined(_WIN64)
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#define RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED_PTR(x) RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED32(x)
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#else
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#define RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED_PTR(x) RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED64(x)
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#endif
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#define RtlMultiplyWithOverflowCheckUint RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED32(UINT)
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#define RtlMultiplyWithOverflowCheckUint32 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED32(UINT32)
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#define RtlMultiplyWithOverflowCheckUlong RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED32(ULONG)
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#define RtlMultiplyWithOverflowCheckUlong32 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED32(ULONG32)
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#define RtlMultiplyWithOverflowCheckDword RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED32(DWORD)
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#define RtlMultiplyWithOverflowCheckDword32 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED32(DWORD32)
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#define RtlMultiplyWithOverflowCheckUint64 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED64(UINT64)
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#define RtlMultiplyWithOverflowCheckUlong64 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED64(ULONG64)
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#define RtlMultiplyWithOverflowCheckDword64 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED64(DWORD64)
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#define RtlMultiplyWithOverflowCheckUlonglong RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED64(ULONGLONG)
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#define RtlMultiplyWithOverflowCheckInt RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED32(INT)
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#define RtlMultiplyWithOverflowCheckInt32 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED32(INT32)
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#define RtlMultiplyWithOverflowCheckLong RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED32(LONG)
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#define RtlMultiplyWithOverflowCheckLong32 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED32(LONG32)
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//not implemented
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//#define RtlMultiplyWithOverflowCheckInt64 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED64(INT64)
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//#define RtlMultiplyWithOverflowCheckLong64 RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED64(LONG64)
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//#define RtlMultiplyWithOverflowCheckLonglong RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED64(LONGLONG)
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#define RtlMultiplyWithOverflowCheckUintPtr RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED_PTR(UINT_PTR)
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#define RtlMultiplyWithOverflowCheckUlongPtr RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED_PTR(ULONG_PTR)
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#define RtlMultiplyWithOverflowCheckDwordPtr RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED_PTR(DWORD_PTR)
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#define RtlMultiplyWithOverflowCheckSizet RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_UNSIGNED_PTR(SIZE_T)
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//not implemented
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//#define RtlMultiplyWithOverflowCheckIntPtr RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED_PTR(INT_PTR)
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//#define RtlMultiplyWithOverflowCheckLongPtr RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED_PTR(LONG_PTR)
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//#define RtlMultiplyWithOverflowCheckSsizet RTL_CAST_MULTIPLY_WITH_OVERFLOW_CHECK_SIGNED_PTR(SSIZE_T)
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif
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