Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1068 insertions, 0 deletions

diff --git a/include/iprt/uint32.h b/include/iprt/uint32.h
new file mode 100644
index 00000000..5ecd6db3
--- /dev/null
+++ b/include/iprt/uint32.h
@@ -0,0 +1,1068 @@
+/** @file
+ * IPRT - RTUINT32U methods for old 16-bit compilers (mainly for division).
+ */
+
+/*
+ * Copyright (C) 2011-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef IPRT_INCLUDED_uint32_h
+#define IPRT_INCLUDED_uint32_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/cdefs.h>
+#include <iprt/types.h>
+#include <iprt/asm.h>
+
+RT_C_DECLS_BEGIN
+
+/** @defgroup grp_rt_uint32 RTUInt32 - 32-bit Unsigned Integer Methods for 16-bit compilers.
+ * @ingroup grp_rt
+ * @{
+ */
+
+#define RTUINT32_HAVE_32BIT_BASICS
+
+
+/**
+ * Test if a 32-bit unsigned integer value is zero.
+ *
+ * @returns true if they are, false if they aren't.
+ * @param   pValue          The input and output value.
+ */
+DECLINLINE(bool) RTUInt32IsZero(PRTUINT32U pValue)
+{
+    return pValue->s.Lo == 0
+        && pValue->s.Hi == 0;
+}
+
+
+/**
+ * Set a 32-bit unsigned integer value to zero.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32SetZero(PRTUINT32U pResult)
+{
+    pResult->s.Hi = 0;
+    pResult->s.Lo = 0;
+    return pResult;
+}
+
+
+/**
+ * Set a 32-bit unsigned integer value to the maximum value.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32SetMax(PRTUINT32U pResult)
+{
+    pResult->s.Hi = UINT16_MAX;
+    pResult->s.Lo = UINT16_MAX;
+    return pResult;
+}
+
+
+
+
+/**
+ * Adds two 32-bit unsigned integer values.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32Add(PRTUINT32U pResult, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    pResult->u = pValue1->u + pValue2->u;
+#else
+    pResult->s.Hi = pValue1->s.Hi + pValue2->s.Hi;
+    pResult->s.Lo = pValue1->s.Lo + pValue2->s.Lo;
+    if (pResult->s.Lo < pValue1->s.Lo)
+        pResult->s.Hi++;
+#endif
+    return pResult;
+}
+
+
+/**
+ * Adds a 32-bit and a 16-bit unsigned integer values.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The first value.
+ * @param   uValue2             The second value, 16-bit.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AddU16(PRTUINT32U pResult, PCRTUINT32U pValue1, uint16_t uValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    pResult->u = pValue1->u + uValue2;
+#else
+    pResult->s.Hi = pValue1->s.Hi;
+    pResult->s.Lo = pValue1->s.Lo + uValue2;
+    if (pResult->s.Lo < pValue1->s.Lo)
+        pResult->s.Hi++;
+#endif
+    return pResult;
+}
+
+
+/**
+ * Subtracts a 32-bit unsigned integer value from another.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The minuend value.
+ * @param   pValue2             The subtrahend value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32Sub(PRTUINT32U pResult, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    pResult->u = pValue1->u - pValue2->u;
+#else
+    pResult->s.Lo = pValue1->s.Lo - pValue2->s.Lo;
+    pResult->s.Hi = pValue1->s.Hi - pValue2->s.Hi;
+    if (pResult->s.Lo > pValue1->s.Lo)
+        pResult->s.Hi--;
+#endif
+    return pResult;
+}
+
+
+/**
+ * Multiplies two 32-bit unsigned integer values.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32Mul(PRTUINT32U pResult, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    pResult->u     = (uint32_t)pValue1->s.Lo * pValue2->s.Lo;
+    pResult->s.Hi += pValue1->s.Hi * pValue2->s.Lo;
+    pResult->s.Hi += pValue1->s.Lo * pValue2->s.Hi;
+
+    return pResult;
+}
+
+
+/**
+ * Multiplies an 32-bit unsigned integer by a 16-bit unsigned integer value.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The first value.
+ * @param   uValue2             The second value, 16-bit.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32MulByU16(PRTUINT32U pResult, PCRTUINT32U pValue1, uint16_t uValue2)
+{
+    pResult->u     = (uint32_t)pValue1->s.Lo * uValue2;
+    pResult->s.Hi += pValue1->s.Hi * uValue2;
+    return pResult;
+}
+
+
+DECLINLINE(PRTUINT32U) RTUInt32DivRem(PRTUINT32U pQuotient, PRTUINT32U pRemainder, PCRTUINT32U pValue1, PCRTUINT32U pValue2);
+
+/**
+ * Divides a 32-bit unsigned integer value by another.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The dividend value.
+ * @param   pValue2             The divisor value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32Div(PRTUINT32U pResult, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    RTUINT32U Ignored;
+    return RTUInt32DivRem(pResult, &Ignored, pValue1, pValue2);
+}
+
+
+/**
+ * Divides a 32-bit unsigned integer value by another, returning the remainder.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable (remainder).
+ * @param   pValue1             The dividend value.
+ * @param   pValue2             The divisor value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32Mod(PRTUINT32U pResult, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    RTUINT32U Ignored;
+    RTUInt32DivRem(&Ignored, pResult, pValue1, pValue2);
+    return pResult;
+}
+
+
+/**
+ * Bitwise AND of two 32-bit unsigned integer values.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32And(PRTUINT32U pResult, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    pResult->s.Hi = pValue1->s.Hi & pValue2->s.Hi;
+    pResult->s.Lo = pValue1->s.Lo & pValue2->s.Lo;
+    return pResult;
+}
+
+
+/**
+ * Bitwise OR of two 32-bit unsigned integer values.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32Or( PRTUINT32U pResult, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    pResult->s.Hi = pValue1->s.Hi | pValue2->s.Hi;
+    pResult->s.Lo = pValue1->s.Lo | pValue2->s.Lo;
+    return pResult;
+}
+
+
+/**
+ * Bitwise XOR of two 32-bit unsigned integer values.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32Xor(PRTUINT32U pResult, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    pResult->s.Hi = pValue1->s.Hi ^ pValue2->s.Hi;
+    pResult->s.Lo = pValue1->s.Lo ^ pValue2->s.Lo;
+    return pResult;
+}
+
+
+/**
+ * Shifts a 32-bit unsigned integer value @a cBits to the left.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue              The value to shift.
+ * @param   cBits               The number of bits to shift it.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32ShiftLeft(PRTUINT32U pResult, PCRTUINT32U pValue, int cBits)
+{
+    cBits &= 31;
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    pResult->u = pValue->u << cBits;
+#else
+    if (cBits < 16)
+    {
+        pResult->s.Lo = pValue->s.Lo << cBits;
+        pResult->s.Hi = (pValue->s.Hi << cBits) | (pValue->s.Lo >> (16 - cBits));
+    }
+    else
+    {
+        pResult->s.Lo = 0;
+        pResult->s.Hi = pValue->s.Lo << (cBits - 16);
+    }
+#endif
+    return pResult;
+}
+
+
+/**
+ * Shifts a 32-bit unsigned integer value @a cBits to the right.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue              The value to shift.
+ * @param   cBits               The number of bits to shift it.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32ShiftRight(PRTUINT32U pResult, PCRTUINT32U pValue, int cBits)
+{
+    cBits &= 31;
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    pResult->u = pValue->u >> cBits;
+#else
+    if (cBits < 16)
+    {
+        pResult->s.Hi = pValue->s.Hi >> cBits;
+        pResult->s.Lo = (pValue->s.Lo >> cBits) | (pValue->s.Hi << (16 - cBits));
+    }
+    else
+    {
+        pResult->s.Hi = 0;
+        pResult->s.Lo = pValue->s.Hi >> (cBits - 16);
+    }
+#endif
+    return pResult;
+}
+
+
+/**
+ * Boolean not (result 0 or 1).
+ *
+ * @returns pResult.
+ * @param   pResult             The result variable.
+ * @param   pValue              The value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32BooleanNot(PRTUINT32U pResult, PCRTUINT32U pValue)
+{
+    pResult->s.Lo = pValue->s.Lo || pValue->s.Hi ? 0 : 1;
+    pResult->s.Hi = 0;
+    return pResult;
+}
+
+
+/**
+ * Bitwise not (flips each bit of the 32 bits).
+ *
+ * @returns pResult.
+ * @param   pResult             The result variable.
+ * @param   pValue              The value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32BitwiseNot(PRTUINT32U pResult, PCRTUINT32U pValue)
+{
+    pResult->s.Hi = ~pValue->s.Hi;
+    pResult->s.Lo = ~pValue->s.Lo;
+    return pResult;
+}
+
+
+/**
+ * Assigns one 32-bit unsigned integer value to another.
+ *
+ * @returns pResult
+ * @param   pResult             The result variable.
+ * @param   pValue              The value to assign.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32Assign(PRTUINT32U pResult, PCRTUINT32U pValue)
+{
+    pResult->s.Hi = pValue->s.Hi;
+    pResult->s.Lo = pValue->s.Lo;
+    return pResult;
+}
+
+
+/**
+ * Assigns a boolean value to 32-bit unsigned integer.
+ *
+ * @returns pValueResult
+ * @param   pValueResult        The result variable.
+ * @param   fValue              The boolean value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignBoolean(PRTUINT32U pValueResult, bool fValue)
+{
+    pValueResult->s.Lo = fValue;
+    pValueResult->s.Hi = 0;
+    return pValueResult;
+}
+
+
+/**
+ * Assigns a 8-bit unsigned integer value to 32-bit unsigned integer.
+ *
+ * @returns pValueResult
+ * @param   pValueResult        The result variable.
+ * @param   u8Value             The 8-bit unsigned integer value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignU8(PRTUINT32U pValueResult, uint8_t u8Value)
+{
+    pValueResult->s.Lo = u8Value;
+    pValueResult->s.Hi = 0;
+    return pValueResult;
+}
+
+
+/**
+ * Assigns a 16-bit unsigned integer value to 32-bit unsigned integer.
+ *
+ * @returns pValueResult
+ * @param   pValueResult        The result variable.
+ * @param   u16Value            The 16-bit unsigned integer value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignU16(PRTUINT32U pValueResult, uint16_t u16Value)
+{
+    pValueResult->s.Lo = u16Value;
+    pValueResult->s.Hi = 0;
+    return pValueResult;
+}
+
+
+/**
+ * Adds two 32-bit unsigned integer values, storing the result in the first.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The first value and result.
+ * @param   pValue2         The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignAdd(PRTUINT32U pValue1Result, PCRTUINT32U pValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    pValue1Result->u += pValue2->u;
+#else
+    uint16_t const uTmp = pValue1Result->s.Lo;
+    pValue1Result->s.Lo += pValue2->s.Lo;
+    if (pValue1Result->s.Lo < uTmp)
+        pValue1Result->s.Hi++;
+    pValue1Result->s.Hi += pValue2->s.Hi;
+#endif
+    return pValue1Result;
+}
+
+
+/**
+ * Subtracts two 32-bit unsigned integer values, storing the result in the
+ * first.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The minuend value and result.
+ * @param   pValue2         The subtrahend value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignSub(PRTUINT32U pValue1Result, PCRTUINT32U pValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    pValue1Result->u -= pValue2->u;
+#else
+    uint32_t const uTmp = pValue1Result->s.Lo;
+    pValue1Result->s.Lo -= pValue2->s.Lo;
+    if (pValue1Result->s.Lo > uTmp)
+        pValue1Result->s.Hi--;
+    pValue1Result->s.Hi -= pValue2->s.Hi;
+#endif
+    return pValue1Result;
+}
+
+
+/**
+ * Multiplies two 32-bit unsigned integer values, storing the result in the
+ * first.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The first value and result.
+ * @param   pValue2         The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignMul(PRTUINT32U pValue1Result, PCRTUINT32U pValue2)
+{
+    RTUINT32U Result;
+    RTUInt32Mul(&Result, pValue1Result, pValue2);
+    *pValue1Result = Result;
+    return pValue1Result;
+}
+
+
+/**
+ * Divides a 32-bit unsigned integer value by another, storing the result in
+ * the first.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The dividend value and result.
+ * @param   pValue2         The divisor value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignDiv(PRTUINT32U pValue1Result, PCRTUINT32U pValue2)
+{
+    RTUINT32U Result;
+    RTUINT32U Ignored;
+    RTUInt32DivRem(&Result, &Ignored, pValue1Result, pValue2);
+    *pValue1Result = Result;
+    return pValue1Result;
+}
+
+
+/**
+ * Divides a 32-bit unsigned integer value by another, storing the remainder in
+ * the first.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The dividend value and result (remainder).
+ * @param   pValue2         The divisor value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignMod(PRTUINT32U pValue1Result, PCRTUINT32U pValue2)
+{
+    RTUINT32U Ignored;
+    RTUINT32U Result;
+    RTUInt32DivRem(&Ignored, &Result, pValue1Result, pValue2);
+    *pValue1Result = Result;
+    return pValue1Result;
+}
+
+
+/**
+ * Performs a bitwise AND of two 32-bit unsigned integer values and assigned
+ * the result to the first one.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The first value and result.
+ * @param   pValue2         The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignAnd(PRTUINT32U pValue1Result, PCRTUINT32U pValue2)
+{
+    pValue1Result->s.Hi &= pValue2->s.Hi;
+    pValue1Result->s.Lo &= pValue2->s.Lo;
+    return pValue1Result;
+}
+
+
+/**
+ * Performs a bitwise AND of a 32-bit unsigned integer value and a mask made up
+ * of the first N bits, assigning the result to the the 32-bit value.
+ *
+ * @returns pValueResult.
+ * @param   pValueResult    The value and result.
+ * @param   cBits           The number of bits to AND (counting from the first
+ *                          bit).
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignAndNFirstBits(PRTUINT32U pValueResult, unsigned cBits)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    if (cBits < 32)
+        pValueResult->u &= RT_BIT_32(cBits) - 1;
+#else
+    if (cBits <= 16)
+    {
+        if (cBits != 16)
+            pValueResult->s.Lo &= (UINT16_C(1) << cBits) - 1;
+        pValueResult->s.Hi = 0;
+    }
+    else if (cBits < 16)
+        pValueResult->s.Hi &= (UINT16_C(1) << (cBits - 16)) - 1;
+#endif
+    return pValueResult;
+}
+
+
+/**
+ * Performs a bitwise OR of two 32-bit unsigned integer values and assigned
+ * the result to the first one.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The first value and result.
+ * @param   pValue2         The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignOr(PRTUINT32U pValue1Result, PCRTUINT32U pValue2)
+{
+    pValue1Result->s.Hi |= pValue2->s.Hi;
+    pValue1Result->s.Lo |= pValue2->s.Lo;
+    return pValue1Result;
+}
+
+
+/**
+ * ORs in a bit and assign the result to the input value.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The first value and result.
+ * @param   iBit            The bit to set (0 based).
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignOrBit(PRTUINT32U pValue1Result, unsigned iBit)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    pValue1Result->u |= RT_BIT_32(iBit);
+#else
+    if (iBit >= 32)
+        pValue1Result->s.Hi |= UINT16_C(1) << (iBit - 32);
+    else
+        pValue1Result->s.Lo |= UINT16_C(1) << iBit;
+#endif
+    return pValue1Result;
+}
+
+
+
+/**
+ * Performs a bitwise XOR of two 32-bit unsigned integer values and assigned
+ * the result to the first one.
+ *
+ * @returns pValue1Result.
+ * @param   pValue1Result   The first value and result.
+ * @param   pValue2         The second value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignXor(PRTUINT32U pValue1Result, PCRTUINT32U pValue2)
+{
+    pValue1Result->s.Hi ^= pValue2->s.Hi;
+    pValue1Result->s.Lo ^= pValue2->s.Lo;
+    return pValue1Result;
+}
+
+
+/**
+ * Performs a bitwise left shift on a 32-bit unsigned integer value, assigning
+ * the result to it.
+ *
+ * @returns pValueResult.
+ * @param   pValueResult    The first value and result.
+ * @param   cBits           The number of bits to shift.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignShiftLeft(PRTUINT32U pValueResult, int cBits)
+{
+#ifndef RTUINT32_HAVE_32BIT_BASICS
+    RTUINT32U const InVal = *pValueResult;
+#endif
+    if (cBits > 0)
+    {
+        /* (left shift) */
+        cBits &= 31;
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+        pValueResult->u <<= cBits;
+#else
+        if (cBits >= 16)
+        {
+            pValueResult->s.Lo  = 0;
+            pValueResult->s.Hi  = InVal.s.Lo << (cBits - 16);
+        }
+        else
+        {
+            pValueResult->s.Hi  = InVal.s.Hi << cBits;
+            pValueResult->s.Hi |= InVal.s.Lo >> (16 - cBits);
+            pValueResult->s.Lo  = InVal.s.Lo << cBits;
+        }
+#endif
+    }
+    else if (cBits < 0)
+    {
+        /* (right shift) */
+        cBits = -cBits;
+        cBits &= 31;
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+        pValueResult->u >>= cBits;
+#else
+        if (cBits >= 16)
+        {
+            pValueResult->s.Hi  = 0;
+            pValueResult->s.Lo  = InVal.s.Hi >> (cBits - 16);
+        }
+        else
+        {
+            pValueResult->s.Lo  = InVal.s.Lo >> cBits;
+            pValueResult->s.Lo |= InVal.s.Hi << (16 - cBits);
+            pValueResult->s.Hi  = InVal.s.Hi >> cBits;
+        }
+#endif
+    }
+    return pValueResult;
+}
+
+
+/**
+ * Performs a bitwise left shift on a 32-bit unsigned integer value, assigning
+ * the result to it.
+ *
+ * @returns pValueResult.
+ * @param   pValueResult    The first value and result.
+ * @param   cBits           The number of bits to shift.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignShiftRight(PRTUINT32U pValueResult, int cBits)
+{
+    return RTUInt32AssignShiftLeft(pValueResult, -cBits);
+}
+
+
+/**
+ * Performs a bitwise NOT on a 32-bit unsigned integer value, assigning the
+ * result to it.
+ *
+ * @returns pValueResult
+ * @param   pValueResult    The value and result.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignBitwiseNot(PRTUINT32U pValueResult)
+{
+    pValueResult->s.Hi = ~pValueResult->s.Hi;
+    pValueResult->s.Lo = ~pValueResult->s.Lo;
+    return pValueResult;
+}
+
+
+/**
+ * Performs a boolean NOT on a 32-bit unsigned integer value, assigning the
+ * result to it.
+ *
+ * @returns pValueResult
+ * @param   pValueResult    The value and result.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32AssignBooleanNot(PRTUINT32U pValueResult)
+{
+    return RTUInt32AssignBoolean(pValueResult, RTUInt32IsZero(pValueResult));
+}
+
+
+/**
+ * Compares two 32-bit unsigned integer values.
+ *
+ * @retval  0 if equal.
+ * @retval  -1 if the first value is smaller than the second.
+ * @retval  1  if the first value is larger than the second.
+ *
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(int) RTUInt32Compare(PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    if (pValue1->s.Hi != pValue2->s.Hi)
+        return pValue1->s.Hi > pValue2->s.Hi ? 1 : -1;
+    if (pValue1->s.Lo != pValue2->s.Lo)
+        return pValue1->s.Lo > pValue2->s.Lo ? 1 : -1;
+    return 0;
+}
+
+
+/**
+ * Tests if a 64-bit unsigned integer value is smaller than another.
+ *
+ * @returns true if the first value is smaller, false if not.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(bool) RTUInt32IsSmaller(PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    return pValue1->u < pValue2->u;
+#else
+    return pValue1->s.Hi < pValue2->s.Hi
+        || (   pValue1->s.Hi == pValue2->s.Hi
+            && pValue1->s.Lo  < pValue2->s.Lo);
+#endif
+}
+
+
+/**
+ * Tests if a 32-bit unsigned integer value is larger than another.
+ *
+ * @returns true if the first value is larger, false if not.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(bool) RTUInt32IsLarger(PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    return pValue1->u > pValue2->u;
+#else
+    return pValue1->s.Hi > pValue2->s.Hi
+        || (   pValue1->s.Hi == pValue2->s.Hi
+            && pValue1->s.Lo  > pValue2->s.Lo);
+#endif
+}
+
+
+/**
+ * Tests if a 64-bit unsigned integer value is larger or equal than another.
+ *
+ * @returns true if the first value is larger or equal, false if not.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(bool) RTUInt32IsLargerOrEqual(PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    return pValue1->u >= pValue2->u;
+#else
+    return pValue1->s.Hi > pValue2->s.Hi
+        || (   pValue1->s.Hi == pValue2->s.Hi
+            && pValue1->s.Lo >= pValue2->s.Lo);
+#endif
+}
+
+
+/**
+ * Tests if two 64-bit unsigned integer values not equal.
+ *
+ * @returns true if equal, false if not equal.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(bool) RTUInt32IsEqual(PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    return pValue1->u == pValue2->u;
+#else
+    return pValue1->s.Hi == pValue2->s.Hi
+        && pValue1->s.Lo == pValue2->s.Lo;
+#endif
+}
+
+
+/**
+ * Tests if two 64-bit unsigned integer values are not equal.
+ *
+ * @returns true if not equal, false if equal.
+ * @param   pValue1             The first value.
+ * @param   pValue2             The second value.
+ */
+DECLINLINE(bool) RTUInt32IsNotEqual(PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    return !RTUInt32IsEqual(pValue1, pValue2);
+}
+
+
+/**
+ * Sets a bit in a 32-bit unsigned integer type.
+ *
+ * @returns pValueResult.
+ * @param   pValueResult    The input and output value.
+ * @param   iBit            The bit to set.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32BitSet(PRTUINT32U pValueResult, unsigned iBit)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    if (iBit < 32)
+        pValueResult->u |= RT_BIT_32(iBit);
+#else
+    if (iBit < 16)
+        pValueResult->s.Lo |= UINT16_C(1) << iBit;
+    else if (iBit < 32)
+        pValueResult->s.Hi |= UINT16_C(1) << (iBit - 32);
+#endif
+    return pValueResult;
+}
+
+
+/**
+ * Sets a bit in a 32-bit unsigned integer type.
+ *
+ * @returns pValueResult.
+ * @param   pValueResult    The input and output value.
+ * @param   iBit            The bit to set.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32BitClear(PRTUINT32U pValueResult, unsigned iBit)
+{
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    if (iBit < 32)
+        pValueResult->u &= ~RT_BIT_32(iBit);
+
+#else
+    if (iBit < 16)
+        pValueResult->s.Lo &= ~RT_BIT_32(iBit);
+    else if (iBit < 32)
+        pValueResult->s.Hi &= ~RT_BIT_32(iBit - 32);
+#endif
+    return pValueResult;
+}
+
+
+/**
+ * Tests if a bit in a 32-bit unsigned integer value is set.
+ *
+ * @returns pValueResult.
+ * @param   pValueResult    The input and output value.
+ * @param   iBit            The bit to test.
+ */
+DECLINLINE(bool) RTUInt32BitTest(PRTUINT32U pValueResult, unsigned iBit)
+{
+    bool fRc;
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+    if (iBit < 32)
+        fRc = RT_BOOL(pValueResult->u & RT_BIT_32(iBit));
+#else
+    if (iBit < 16)
+        fRc = RT_BOOL(pValueResult->s.Lo & (UINT16_C(1) << iBit));
+    else if (iBit < 32)
+        fRc = RT_BOOL(pValueResult->s.Hi & (UINT16_C(1) << (iBit - 64)));
+#endif
+    else
+        fRc = false;
+    return fRc;
+}
+
+
+/**
+ * Set a range of bits a 32-bit unsigned integer value.
+ *
+ * @returns pValueResult.
+ * @param   pValueResult    The input and output value.
+ * @param   iFirstBit       The first bit to test.
+ * @param   cBits           The number of bits to set.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32BitSetRange(PRTUINT32U pValueResult, unsigned iFirstBit, unsigned cBits)
+{
+    /* bounds check & fix. */
+    if (iFirstBit < 32)
+    {
+#ifdef RTUINT32_HAVE_32BIT_BASICS
+        if (iFirstBit + cBits < 32)
+            pValueResult->u |= (RT_BIT_32(cBits) - 1) << iFirstBit;
+        else
+            pValueResult->u = UINT32_MAX << iFirstBit;
+#else
+        if (iFirstBit + cBits > 32)
+            cBits = 32 - iFirstBit;
+        if (iFirstBit + cBits < 16)
+            pValueResult->s.Lo |= ((UINT16_C(1) << cBits) - 1) << iFirstBit;
+        else if (iFirstBit + cBits < 32 && iFirstBit >= 16)
+            pValueResult->s.Hi |= ((UINT16_C(1) << cBits) - 1) << (iFirstBit - 16);
+        else
+            while (cBits-- > 0)
+                RTUInt32BitSet(pValueResult, iFirstBit++);
+#endif
+    }
+    return pValueResult;
+}
+
+
+/**
+ * Test if all the bits of a 32-bit unsigned integer value are set.
+ *
+ * @returns true if they are, false if they aren't.
+ * @param   pValue          The input and output value.
+ */
+DECLINLINE(bool) RTUInt32BitAreAllSet(PRTUINT32U pValue)
+{
+    return pValue->s.Hi == UINT16_MAX
+        && pValue->s.Lo == UINT16_MAX;
+}
+
+
+/**
+ * Test if all the bits of a 32-bit unsigned integer value are clear.
+ *
+ * @returns true if they are, false if they aren't.
+ * @param   pValue          The input and output value.
+ */
+DECLINLINE(bool) RTUInt32BitAreAllClear(PRTUINT32U pValue)
+{
+    return RTUInt32IsZero(pValue);
+}
+
+
+DECLINLINE(unsigned) RTUInt32BitCount(PCRTUINT32U pValue)
+{
+    unsigned cBits;
+    if (pValue->s.Hi != 0)
+        cBits = 16 + ASMBitLastSetU16(pValue->s.Hi);
+    else
+        cBits = ASMBitLastSetU16(pValue->s.Lo);
+    return cBits;
+}
+
+
+/**
+ * Divides a 32-bit unsigned integer value by another, returning both quotient
+ * and remainder.
+ *
+ * @returns pQuotient, NULL if pValue2 is 0.
+ * @param   pQuotient           Where to return the quotient.
+ * @param   pRemainder          Where to return the remainder.
+ * @param   pValue1             The dividend value.
+ * @param   pValue2             The divisor value.
+ */
+DECLINLINE(PRTUINT32U) RTUInt32DivRem(PRTUINT32U pQuotient, PRTUINT32U pRemainder, PCRTUINT32U pValue1, PCRTUINT32U pValue2)
+{
+    int iDiff;
+
+    /*
+     * Sort out all the special cases first.
+     */
+    /* Divide by zero or 1? */
+    if (!pValue2->s.Hi)
+    {
+        if (!pValue2->s.Lo)
+            return NULL;
+
+        if (pValue2->s.Lo == 1)
+        {
+            RTUInt32SetZero(pRemainder);
+            *pQuotient = *pValue1;
+            return pQuotient;
+        }
+        /** @todo RTUInt32DivModByU32 */
+    }
+
+    /* Dividend is smaller? */
+    iDiff = RTUInt32Compare(pValue1, pValue2);
+    if (iDiff < 0)
+    {
+        *pRemainder = *pValue1;
+        RTUInt32SetZero(pQuotient);
+    }
+
+    /* The values are equal? */
+    else if (iDiff == 0)
+    {
+        RTUInt32SetZero(pRemainder);
+        RTUInt32AssignU8(pQuotient, 1);
+    }
+    else
+    {
+        /*
+         * Prepare.
+         */
+        unsigned  iBitAdder = RTUInt32BitCount(pValue1) - RTUInt32BitCount(pValue2);
+        RTUINT32U NormDivisor = *pValue2;
+        if (iBitAdder)
+        {
+            RTUInt32ShiftLeft(&NormDivisor, pValue2, iBitAdder);
+            if (RTUInt32IsLarger(&NormDivisor, pValue1))
+            {
+                RTUInt32AssignShiftRight(&NormDivisor, 1);
+                iBitAdder--;
+            }
+        }
+        else
+            NormDivisor = *pValue2;
+
+        RTUInt32SetZero(pQuotient);
+        *pRemainder = *pValue1;
+
+        /*
+         * Do the division.
+         */
+        if (RTUInt32IsLargerOrEqual(pRemainder, pValue2))
+        {
+            for (;;)
+            {
+                if (RTUInt32IsLargerOrEqual(pRemainder, &NormDivisor))
+                {
+                    RTUInt32AssignSub(pRemainder, &NormDivisor);
+                    RTUInt32AssignOrBit(pQuotient, iBitAdder);
+                }
+                if (RTUInt32IsSmaller(pRemainder, pValue2))
+                    break;
+                RTUInt32AssignShiftRight(&NormDivisor, 1);
+                iBitAdder--;
+            }
+        }
+    }
+    return pQuotient;
+}
+
+
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_uint32_h */
+