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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32\common\arm\cdes8.cia
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//
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//
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#include <e32cia.h>
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#include "../common.h"
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#define __FIXED_POINT_64BIT_DIV10__
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#if defined(__DES8_MACHINE_CODED__) || defined(__EABI__)
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GLREF_C void Des8PanicBadDesType();
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GLREF_C void Des8PanicPosOutOfRange();
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#endif
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#ifdef __DES8_MACHINE_CODED__
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GLREF_C void Des8PanicLengthNegative();
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GLREF_C void Des8PanicMaxLengthNegative();
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GLREF_C void Des8PanicLengthOutOfRange();
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GLREF_C void Des8PanicDesOverflow();
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GLREF_C void Des8PanicDesIndexOutOfRange();
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__NAKED__ EXPORT_C const TUint8 *TDesC8::Ptr() const
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//
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// Return a pointer to the buffer.
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//
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{
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asm("ldr r1, [r0], #4 ");
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asm("cmp r1, #0x50000000 ");
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asm("bcs " CSM_Z19Des8PanicBadDesTypev);
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asm("eor r1, r1, r1, lsr #1 ");
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asm("msr cpsr_flg, r1 ");
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asm("addcs r0, r0, #4 ");
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asm("ldrle r0, [r0] ");
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asm("addeq r0, r0, #4 ");
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__JUMP(,lr);
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}
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#ifndef __EABI_CTORS__
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__NAKED__ EXPORT_C TPtrC8::TPtrC8()
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//
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// Default constructor
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//
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{
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asm("mov r1, #0x10000000 "); // type=EPtrC, length=0
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asm("mov r2, #0 "); // ptr=NULL
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asm("stmia r0, {r1,r2} ");
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__JUMP(,lr);
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}
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__NAKED__ EXPORT_C TPtrC8::TPtrC8(const TDesC8& /*aDes*/)
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//
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// Constructor
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//
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{
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asm("ldr r2, [r1], #4 "); // r2 = type/length
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asm("bic r3, r2, #0xF0000000"); // r3 = length
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asm("orr r3, r3, #0x10000000"); // r3 = EPtrC + length
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asm("cmp r2, #0x50000000 ");
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asm("bcs " CSM_Z19Des8PanicBadDesTypev);
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asm("eor r2, r2, r2, lsr #1 ");
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asm("msr cpsr_flg, r2 ");
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asm("addcs r1, r1, #4 ");
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asm("ldrle r1, [r1] ");
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asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
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asm("str r3, [r0] ");
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asm("str r1, [r0, #4] ");
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__JUMP(,lr);
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}
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__NAKED__ EXPORT_C TPtrC8::TPtrC8(const TUint8* /*aString*/)
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//
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// Constructor
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//
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{
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asm("mov r2, r1 "); // save aString pointer
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asm("1: ");
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asm("ldrb r3, [r1], #1 ");
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asm("cmp r3, #0 ");
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asm("bne 1b "); // loop until we reach zero terminator
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asm("sub r1, r1, r2 "); // r1 = length + 1
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asm("sub r1, r1, #1 "); // r1 = length
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asm("orr r1, r1, #0x10000000 "); // r1=EPtrC + length
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asm("stmia r0, {r1, r2} "); // store type/length and ptr fields
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__JUMP(,lr);
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}
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__NAKED__ EXPORT_C TPtrC8::TPtrC8(const TUint8* /*aBuf*/,TInt /*aLength*/)
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//
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// Constructor
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//
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{
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asm("orrs r2, r2, #0x10000000 ");
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asm("strpl r2, [r0] ");
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asm("strpl r1, [r0, #4] ");
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__JUMP(pl,lr);
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asm("b " CSM_Z23Des8PanicLengthNegativev);
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}
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__NAKED__ EXPORT_C TPtr8::TPtr8(TUint8* /*aBuf*/,TInt /*aMaxLength*/)
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//
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// Constructor
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//
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{
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asm("cmp r2, #0 ");
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asm("movpl r3, r1 ");
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asm("movpl r1, #0x20000000 "); // length=0, EPtr
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asm("stmplia r0, {r1,r2,r3} ");
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__JUMP(pl,lr);
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asm("b " CSM_Z26Des8PanicMaxLengthNegativev);
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}
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__NAKED__ EXPORT_C TPtr8::TPtr8(TUint8* /*aBuf*/,TInt /*aLength*/,TInt /*aMaxLength*/)
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//
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// Constructor
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//
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{
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asm("cmp r2, #0 "); // check length>=0
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asm("cmpge r3, r2 "); // if so, check maxlength>=length
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asm("movge r12, r1 ");
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asm("orrge r2, r2, #0x20000000 "); // r2 = length + EPtr
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asm("stmgeia r0, {r2,r3,r12} ");
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__JUMP(ge,lr);
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asm("cmp r2, #0 ");
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asm("bmi " CSM_Z23Des8PanicLengthNegativev);
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asm("cmp r3, #0 ");
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asm("bmi " CSM_Z26Des8PanicMaxLengthNegativev);
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asm("b " CSM_Z25Des8PanicLengthOutOfRangev);
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}
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__NAKED__ EXPORT_C TPtr8::TPtr8(TBufCBase8& /*aLcb*/,TInt /*aMaxLength*/)
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//
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// Constructor
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//
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{
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asm("mov r3, r1 ");
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asm("ldr r1, [r3] ");
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asm("bic r1, r1, #0xF0000000 "); // r1=aLcb.Length()
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asm("cmp r1, r2 "); // check against maxlength
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asm("orrle r1, r1, #0x40000000 "); // r1=aLcb.Length() + EBufCPtr
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asm("stmleia r0, {r1,r2,r3} ");
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__JUMP(le,lr);
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asm("b " CSM_Z25Des8PanicLengthOutOfRangev);
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}
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__NAKED__ EXPORT_C TBufCBase8::TBufCBase8()
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//
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// Constructor
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//
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{
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asm("mov r1, #0 ");
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asm("str r1, [r0] ");
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__JUMP(,lr);
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}
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__NAKED__ EXPORT_C TBufCBase8::TBufCBase8(const TUint8* /*aString*/,TInt /*aMaxLength*/)
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//
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// Constructor
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//
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{
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asm("mov r3, r1 "); // save aString pointer
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asm("1: ");
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asm("ldrb r12, [r3], #1 ");
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asm("cmp r12, #0 ");
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asm("bne 1b "); // loop until we reach zero terminator
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asm("sub r3, r3, r1 "); // r3 = length + 1
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asm("sub r3, r3, #1 "); // r3 = length (+EBufC)
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asm("cmp r3, r2 "); // check against max length
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asm("bgt " CSM_Z25Des8PanicLengthOutOfRangev);
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asm("stmfd sp!, {r0,lr} "); // save registers for function call
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asm("str r3, [r0], #4 "); // save length/type field, r0->buffer
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asm("mov r2, r3 "); // length into r2 for function call
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asm("bl memmove ");
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__POPRET("r0,");
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}
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__NAKED__ EXPORT_C TBufCBase8::TBufCBase8(const TDesC8& /*aDes*/,TInt /*aMaxLength*/)
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//
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// Constructor
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//
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{
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asm("ldr r3, [r1], #4 "); // r3 = type/length
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asm("bic r12, r3, #0xF0000000"); // r12 = length
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asm("cmp r12, r2 "); // compare with maxlength
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asm("bgt " CSM_Z25Des8PanicLengthOutOfRangev);
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asm("cmp r3, #0x50000000 ");
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asm("bcs " CSM_Z19Des8PanicBadDesTypev);
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asm("eor r3, r3, r3, lsr #1 ");
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asm("msr cpsr_flg, r3 ");
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asm("addcs r1, r1, #4 ");
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asm("ldrle r1, [r1] ");
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asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
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asm("stmfd sp!, {r0,lr} "); // save registers for function call
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asm("str r12, [r0], #4 "); // store length/type, r0->buffer
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asm("mov r2, r12 "); // length into r2 for function call
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asm("bl memmove ");
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__POPRET("r0,");
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}
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#endif
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__NAKED__ EXPORT_C void TBufCBase8::Copy(const TUint8* /*aString*/,TInt /*aMaxLength*/)
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//
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// Copy from a string.
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//
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{
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asm("mov r3, r1 "); // save aString pointer
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asm("1: ");
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asm("ldrb r12, [r3], #1 ");
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asm("cmp r12, #0 ");
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asm("bne 1b "); // loop until we reach zero terminator
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asm("sub r3, r3, r1 "); // r3 = length + 1
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asm("sub r3, r3, #1 "); // r3 = length (+EBufC)
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asm("cmp r3, r2 "); // check against max length
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asm("bgt " CSM_Z25Des8PanicLengthOutOfRangev);
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asm("str r3, [r0], #4 "); // save length/type field, r0->buffer
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asm("mov r2, r3 "); // length into r2 for function call
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asm("b memmove ");
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}
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__NAKED__ EXPORT_C void TBufCBase8::Copy(const TDesC8& /*aDes*/,TInt /*aMaxLength*/)
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//
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// Copy from a descriptor.
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//
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{
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asm("ldr r3, [r1], #4 "); // r3 = type/length
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asm("bic r12, r3, #0xF0000000"); // r12 = length
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asm("cmp r12, r2 "); // compare with maxlength
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asm("bgt " CSM_Z20Des8PanicDesOverflowv);
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asm("cmp r3, #0x50000000 ");
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asm("bcs " CSM_Z19Des8PanicBadDesTypev);
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asm("eor r3, r3, r3, lsr #1 ");
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asm("msr cpsr_flg, r3 ");
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asm("addcs r1, r1, #4 ");
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asm("ldrle r1, [r1] ");
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asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
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asm("str r12, [r0], #4 "); // store length/type, r0->buffer
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asm("mov r2, r12 "); // length into r2 for function call
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asm("b memmove ");
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}
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#ifndef __EABI_CTORS__
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__NAKED__ EXPORT_C TBufBase8::TBufBase8(TInt /*aMaxLength*/)
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{
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asm("mov r2, #0x30000000 "); // EBuf + zero length
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asm("str r2, [r0] ");
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asm("str r1, [r0, #4] ");
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__JUMP(,lr);
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}
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__NAKED__ EXPORT_C TBufBase8::TBufBase8(TInt /*aLength*/, TInt /*aMaxLength*/)
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{
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asm("cmp r1, #0 "); // check length>=0
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asm("cmpge r2, r1 "); // if so, check maxlength>=length
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asm("orrge r1, r1, #0x30000000 "); // r1=length + EBuf
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asm("stmgeia r0, {r1,r2} "); // store length/type and maxlength fields
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__JUMP(ge,lr);
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asm("cmp r2, #0 ");
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asm("bmi " CSM_Z26Des8PanicMaxLengthNegativev);
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asm("b " CSM_Z25Des8PanicLengthOutOfRangev);
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}
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__NAKED__ EXPORT_C TBufBase8::TBufBase8(const TUint8* /*aString*/, TInt /*aMaxLength*/)
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{
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asm("mov r12, r1 "); // save aString pointer
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asm("1: ");
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asm("ldrb r3, [r1], #1 ");
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asm("cmp r3, #0 ");
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asm("bne 1b "); // loop until we reach zero terminator
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asm("sub r1, r1, r12 "); // r1 = length + 1
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asm("sub r1, r1, #1 "); // r1 = length
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asm("cmp r1, r2 "); // compare to max length
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asm("bgt " CSM_Z25Des8PanicLengthOutOfRangev); // length too big, so panic
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asm("orr r1, r1, #0x30000000 "); // if length<=max, r1=EBuf + length
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asm("stmfd sp!, {r0,lr} "); // save registers for function call
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asm("stmia r0!, {r1, r2} "); // store type/length and max length fields, r0->buffer
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asm("bic r2, r1, #0xf0000000 "); // r2=length
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asm("mov r1, r12 "); // r12=aString
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asm("bl memmove ");
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__POPRET("r0,");
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}
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__NAKED__ EXPORT_C TBufBase8::TBufBase8(const TDesC8& /*aDes*/, TInt /*aMaxLength*/)
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{
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asm("ldr r3, [r1], #4 "); // r3 = type/length
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asm("bic r12, r3, #0xF0000000"); // r12 = length
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asm("cmp r12, r2 "); // compare with maxlength
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asm("bgt " CSM_Z25Des8PanicLengthOutOfRangev);
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asm("cmp r3, #0x50000000 ");
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asm("bcs " CSM_Z19Des8PanicBadDesTypev);
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asm("eor r3, r3, r3, lsr #1 ");
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asm("msr cpsr_flg, r3 ");
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asm("addcs r1, r1, #4 ");
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asm("ldrle r1, [r1] ");
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asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
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asm("stmfd sp!, {r0,lr} "); // save registers for function call
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asm("orr r12, r12, #0x30000000 "); // add EBuf type field
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312 |
asm("str r12, [r0], #4 "); // store length/type, r0->max length
|
|
|
313 |
asm("str r2, [r0], #4 "); // store max length, r0->buffer
|
|
|
314 |
asm("bic r2, r12, #0xf0000000 "); // length into r2 for function call
|
|
|
315 |
asm("bl memmove ");
|
|
|
316 |
__POPRET("r0,");
|
|
|
317 |
}
|
|
|
318 |
#endif
|
|
|
319 |
|
|
|
320 |
__NAKED__ EXPORT_C void TDes8::SetLength(TInt /*aLength*/)
|
|
|
321 |
//
|
|
|
322 |
// Set the length of the descriptor, checking the length is O.K.
|
|
|
323 |
//
|
|
|
324 |
{
|
|
|
325 |
asm("ldmia r0, {r2,r3} "); // r2=length/type, r3=maxlength
|
|
|
326 |
asm("cmp r1, r3 "); // check aLength against maxlength and for -ve values
|
|
|
327 |
asm("bhi " CSM_Z20Des8PanicDesOverflowv);
|
|
|
328 |
asm("and r2, r2, #0xF0000000 "); // r2=type field
|
|
|
329 |
asm("cmp r2, #0x40000000 "); // check for EBufCPtr
|
|
|
330 |
asm("orr r2, r2, r1 "); // r2=type + new length
|
|
|
331 |
asm("str r2, [r0] "); // store new length
|
|
|
332 |
__JUMP(ne,lr);
|
|
|
333 |
asm("ldr r2, [r0, #8] "); // r2=pointer to TBufCBase
|
|
|
334 |
asm("str r1, [r2] "); // update length of TBufCBase
|
|
|
335 |
__JUMP(,lr);
|
|
|
336 |
}
|
|
|
337 |
|
|
|
338 |
__NAKED__ EXPORT_C void TDes8::SetMax()
|
|
|
339 |
//
|
|
|
340 |
// Set the length to MaxLength().
|
|
|
341 |
//
|
|
|
342 |
{
|
|
|
343 |
asm("ldmia r0, {r1,r2} "); // r1=length/type, r2=maxlength
|
|
|
344 |
asm("and r1, r1, #0xF0000000 "); // r1=type field
|
|
|
345 |
asm("cmp r1, #0x40000000 "); // check for EBufCPtr
|
|
|
346 |
asm("orr r1, r1, r2 "); // r1=type field + maxlength
|
|
|
347 |
asm("str r1, [r0] "); // store new length
|
|
|
348 |
__JUMP(ne,lr);
|
|
|
349 |
asm("ldr r1, [r0, #8] "); // r1 = pointer to TBufCBase
|
|
|
350 |
asm("str r2, [r1] "); // update length of TBufCBase
|
|
|
351 |
__JUMP(,lr);
|
|
|
352 |
}
|
|
|
353 |
|
|
|
354 |
__NAKED__ EXPORT_C void TDes8::Copy(const TUint8* /*aString*/)
|
|
|
355 |
//
|
|
|
356 |
// Copy a string to this descriptor.
|
|
|
357 |
//
|
|
|
358 |
{
|
|
|
359 |
asm("mov r2, r1 "); // r2=aString
|
|
|
360 |
asm("1: ");
|
|
|
361 |
asm("ldrb r3, [r2], #1 ");
|
|
|
362 |
asm("cmp r3, #0 ");
|
|
|
363 |
asm("bne 1b "); // loop until zero terminator reached
|
|
|
364 |
asm("sub r2, r2, r1 ");
|
|
|
365 |
asm("sub r2, r2, #1 "); // r2=length of string
|
|
|
366 |
asm("ldmia r0, {r3,r12} "); // r3=type/length of this, r12=maxlength
|
|
|
367 |
asm("cmp r2, r12 "); // compare new length against maxlength
|
|
|
368 |
asm("bgt " CSM_Z20Des8PanicDesOverflowv);
|
|
|
369 |
asm("cmp r3, #0x50000000 ");
|
|
|
370 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
371 |
asm("and r3, r3, #0xF0000000 "); // r3=type of this
|
|
|
372 |
asm("orr r3, r3, r2 "); // r3=new type/length
|
|
|
373 |
asm("str r3, [r0], #4 "); // store it
|
|
|
374 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
375 |
asm("msr cpsr_flg, r3 ");
|
|
|
376 |
asm("addcs r0, r0, #4 ");
|
|
|
377 |
asm("ldrle r0, [r0] ");
|
|
|
378 |
asm("streq r2, [r0], #4 "); // if EBufCPtr, update length of TBufCBase, r0=Ptr()
|
|
|
379 |
asm("b memmove ");
|
|
|
380 |
}
|
|
|
381 |
|
|
|
382 |
__NAKED__ EXPORT_C void TDes8::Copy(const TUint8* /*aBuf*/,TInt /*aLength*/)
|
|
|
383 |
//
|
|
|
384 |
// Copy the aLength characters to the descriptor.
|
|
|
385 |
//
|
|
|
386 |
{
|
|
|
387 |
asm("ldmia r0, {r3,r12} "); // r3=type/length of this, r12=maxlength
|
|
|
388 |
asm("cmp r2, r12 "); // compare new length against maxlength
|
|
|
389 |
asm("bhi " CSM_Z20Des8PanicDesOverflowv); // Des8Panic if >MaxLength or -ve
|
|
|
390 |
asm("cmp r3, #0x50000000 ");
|
|
|
391 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
392 |
asm("and r3, r3, #0xF0000000 "); // r3=type of this
|
|
|
393 |
asm("orr r3, r3, r2 "); // r3=new type/length
|
|
|
394 |
asm("str r3, [r0], #4 "); // store it
|
|
|
395 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
396 |
asm("msr cpsr_flg, r3 ");
|
|
|
397 |
asm("addcs r0, r0, #4 ");
|
|
|
398 |
asm("ldrle r0, [r0] ");
|
|
|
399 |
asm("streq r2, [r0], #4 "); // if EBufCPtr, update length of TBufCBase, r0=Ptr()
|
|
|
400 |
asm("b memmove ");
|
|
|
401 |
}
|
|
|
402 |
|
|
|
403 |
__NAKED__ EXPORT_C void TDes8::Copy(const TDesC8& /*aDes*/)
|
|
|
404 |
//
|
|
|
405 |
// Copy a descriptor to this descriptor.
|
|
|
406 |
//
|
|
|
407 |
{
|
|
|
408 |
asm("ldr r3, [r1], #4 "); // r3 = type/length of aDes
|
|
|
409 |
asm("bic r12, r3, #0xF0000000"); // r12 = aDes.length
|
|
|
410 |
asm("ldr r2, [r0, #4] "); // r2=this.maxlength
|
|
|
411 |
asm("cmp r12, r2 "); // compare with maxlength
|
|
|
412 |
asm("bgt " CSM_Z20Des8PanicDesOverflowv);
|
|
|
413 |
asm("ldr r2, [r0] "); // get type of this
|
|
|
414 |
asm("cmp r2, #0x50000000 "); // check both descriptor types
|
|
|
415 |
asm("cmpcc r3, #0x50000000 ");
|
|
|
416 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
417 |
asm("and r2, r2, #0xF0000000 ");
|
|
|
418 |
asm("orr r2, r12, r2 "); // r2=new type/length of this
|
|
|
419 |
asm("str r2, [r0], #4 "); // store it
|
|
|
420 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
421 |
asm("msr cpsr_flg, r3 ");
|
|
|
422 |
asm("addcs r1, r1, #4 ");
|
|
|
423 |
asm("ldrle r1, [r1] ");
|
|
|
424 |
asm("addeq r1, r1, #4 "); // r1 = aDes.Ptr()
|
|
|
425 |
asm("eor r2, r2, r2, lsr #1 ");
|
|
|
426 |
asm("msr cpsr_flg, r2 ");
|
|
|
427 |
asm("addcs r0, r0, #4 ");
|
|
|
428 |
asm("ldrle r0, [r0] ");
|
|
|
429 |
asm("streq r12, [r0], #4 "); // if EBufCPtr, update length of TBufCBase, r0=Ptr()
|
|
|
430 |
asm("mov r2, r12 "); // length into r2 for function call
|
|
|
431 |
asm("b memmove ");
|
|
|
432 |
}
|
|
|
433 |
|
|
|
434 |
#ifndef __KERNEL_MODE__
|
|
|
435 |
__NAKED__ EXPORT_C TPtr8 TDes8::LeftTPtr(TInt /*aLength*/) const
|
|
|
436 |
//
|
|
|
437 |
// Extract the left portion of the descriptor.
|
|
|
438 |
//
|
|
|
439 |
{
|
|
|
440 |
// On entry r0=return store ptr, r1=this, r2=aLength
|
|
|
441 |
// Return TPtr8 ([r0]=length/type,[r0,#4]=maxLength,[r0,#8]=Ptr)
|
|
|
442 |
asm("ldr r3, [r1], #4 "); // r3=this.length/type
|
|
|
443 |
asm("cmp r2, #0 "); // check aLength>=0
|
|
|
444 |
asm("blt Des8PanicPosOutOfRange__Fv "); // if not panic
|
|
|
445 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
446 |
asm("cmp r2, r12 "); // limit aLength to Length()
|
|
|
447 |
asm("movgt r2, r12 ");
|
|
|
448 |
asm("cmp r3, #0x50000000 "); // check type() <= 4
|
|
|
449 |
asm("bcs Des8PanicBadDesType__Fv "); // if not, panic
|
|
|
450 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
451 |
asm("msr cpsr_flg, r3 ");
|
|
|
452 |
asm("addcs r1, r1, #4 ");
|
|
|
453 |
asm("ldrle r1, [r1] ");
|
|
|
454 |
asm("addeq r1, r1, #4 "); // r1=this.Ptr()
|
|
|
455 |
asm("mov r3, r1 "); // r3=this.Ptr()
|
|
|
456 |
asm("orr r1, r2, #0x20000000 "); // r1=aLength + EPtr
|
|
|
457 |
asm("stmia r0, {r1-r3} ");
|
|
|
458 |
__JUMP(,lr);
|
|
|
459 |
}
|
|
|
460 |
|
|
|
461 |
__NAKED__ EXPORT_C TPtr8 TDes8::RightTPtr(TInt /*aLength*/) const
|
|
|
462 |
//
|
|
|
463 |
// Extract the right portion of the descriptor.
|
|
|
464 |
//
|
|
|
465 |
{
|
|
|
466 |
// On entry r0=return store ptr, r1=this, r2=aLength
|
|
|
467 |
// Return TPtr8 ([r0]=length/type,[r0,#4]=maxLength,[r0,#8]=Ptr)
|
|
|
468 |
asm("ldr r3, [r1], #4 "); // r3=this.length/type
|
|
|
469 |
asm("cmp r2, #0 "); // check aLength>=0
|
|
|
470 |
asm("blt Des8PanicPosOutOfRange__Fv "); // if not, panic
|
|
|
471 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
472 |
asm("cmp r2, r12 "); // limit aLength to Length()
|
|
|
473 |
asm("movgt r2, r12 ");
|
|
|
474 |
asm("cmp r3, #0x50000000 "); // check type() <= 4
|
|
|
475 |
asm("bcs Des8PanicBadDesType__Fv ");
|
|
|
476 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
477 |
asm("msr cpsr_flg, r3 ");
|
|
|
478 |
asm("addcs r1, r1, #4 ");
|
|
|
479 |
asm("ldrle r1, [r1] ");
|
|
|
480 |
asm("addeq r1, r1, #4 "); // r1=this.Ptr()
|
|
|
481 |
asm("add r3, r1, r12 "); // r3=this.Ptr()+Length()
|
|
|
482 |
asm("orr r1, r2, #0x20000000 "); // r1=aLength + EPtr
|
|
|
483 |
asm("sub r3, r3, r2 "); // r3=Ptr()+Length()-aLength
|
|
|
484 |
asm("stmia r0, {r1-r3} ");
|
|
|
485 |
__JUMP(,lr);
|
|
|
486 |
}
|
|
|
487 |
|
|
|
488 |
__NAKED__ EXPORT_C TPtr8 TDes8::MidTPtr(TInt /*aPos*/) const
|
|
|
489 |
//
|
|
|
490 |
// Extract the middle portion of the descriptor.
|
|
|
491 |
//
|
|
|
492 |
{
|
|
|
493 |
// On entry r0=return store ptr, r1=this, r2=aPos
|
|
|
494 |
// Return TPtr8 ([r0]=length/type,[r0,#4]=maxLength,[r0,#8]=Ptr)
|
|
|
495 |
asm("ldr r3, [r1], #4 "); // r3=this.length/type
|
|
|
496 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
497 |
asm("cmp r2, #0 "); // check aPos>=0
|
|
|
498 |
asm("cmpge r12, r2 "); // if so check Length()>=aPos
|
|
|
499 |
asm("blt Des8PanicPosOutOfRange__Fv ");
|
|
|
500 |
asm("cmp r3, #0x50000000 "); // check type() <= 4
|
|
|
501 |
asm("bcs Des8PanicBadDesType__Fv ");
|
|
|
502 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
503 |
asm("msr cpsr_flg, r3 ");
|
|
|
504 |
asm("addcs r1, r1, #4 ");
|
|
|
505 |
asm("ldrle r1, [r1] ");
|
|
|
506 |
asm("addeq r1, r1, #4 "); // r1=this.Ptr()
|
|
|
507 |
asm("add r3, r1, r2 "); // r3=this.Ptr()+aPos
|
|
|
508 |
asm("sub r2, r12, r2 "); // r2=Length()-aPos (=newMaxLen)
|
|
|
509 |
asm("orr r1, r2, #0x20000000 "); // r1=Length()-aPos + EPtr (=newLen/Type)
|
|
|
510 |
asm("stmia r0, {r1-r3} ");
|
|
|
511 |
__JUMP(,lr);
|
|
|
512 |
}
|
|
|
513 |
|
|
|
514 |
__NAKED__ EXPORT_C TPtr8 TDes8::MidTPtr(TInt /*aPos*/,TInt /*aLength*/) const
|
|
|
515 |
//
|
|
|
516 |
// Extract the middle portion of the descriptor.
|
|
|
517 |
//
|
|
|
518 |
{
|
|
|
519 |
// On entry r0=return store ptr, r1=this, r2=aPos, r3=aLength
|
|
|
520 |
// Return TPtr8 ([r0]=length/type,[r0,#4]=maxLength,[r0,#8]=Ptr)
|
|
|
521 |
asm("str r4, [sp, #-4]! "); // save r4
|
|
|
522 |
asm("ldr r12, [r1], #4 "); // r12=this.length/type
|
|
|
523 |
asm("mov r4, r1 ");
|
|
|
524 |
asm("cmp r12, #0x50000000 "); // check valid descriptor type
|
|
|
525 |
asm("bcs Des8PanicBadDesType__Fv ");
|
|
|
526 |
asm("eor r12, r12, r12, lsr #1 ");
|
|
|
527 |
asm("msr cpsr_flg, r12 ");
|
|
|
528 |
asm("ldr r12, [r1, #-4] ");
|
|
|
529 |
asm("addcs r4, r4, #4 ");
|
|
|
530 |
asm("ldrle r4, [r4] ");
|
|
|
531 |
asm("bic r12, r12, #0xF0000000 "); // r12=Length()
|
|
|
532 |
asm("addeq r4, r4, #4 "); // r4=this.Ptr()
|
|
|
533 |
asm("cmp r2, #0 "); // check aPos>=0
|
|
|
534 |
asm("subge r12, r12, r2 "); // if so, r12=Length()-aPos
|
|
|
535 |
asm("cmpge r12, r3 "); // and check Length()-aPos>=aLength
|
|
|
536 |
asm("orrge r1, r3, #0x20000000 "); // if so, r1=aLength + EPtr
|
|
|
537 |
asm("addge r3, r4, r2 "); // and r3=this.Ptr()+aPos
|
|
|
538 |
asm("bicge r2, r1, #0xF0000000 "); // and r2=aLength
|
|
|
539 |
asm("stmgeia r0, {r1-r3} ");
|
|
|
540 |
asm("ldrge r4, [sp], #4 ");
|
|
|
541 |
__JUMP(ge,lr);
|
|
|
542 |
asm("b Des8PanicPosOutOfRange__Fv ");
|
|
|
543 |
}
|
|
|
544 |
#endif
|
|
|
545 |
|
|
|
546 |
__NAKED__ EXPORT_C const TUint8 &TDesC8::AtC(TInt /*anIndex*/) const
|
|
|
547 |
//
|
|
|
548 |
// Return a reference to the character in the buffer.
|
|
|
549 |
//
|
|
|
550 |
{
|
|
|
551 |
asm("ldr r2, [r0], #4 "); // r2=length/type
|
|
|
552 |
asm("bic r3, r2, #0xF0000000 "); // r3=length
|
|
|
553 |
asm("cmp r2, #0x50000000 ");
|
|
|
554 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
555 |
asm("eor r2, r2, r2, lsr #1 ");
|
|
|
556 |
asm("msr cpsr_flg, r2 ");
|
|
|
557 |
asm("addcs r0, r0, #4 ");
|
|
|
558 |
asm("ldrle r0, [r0] ");
|
|
|
559 |
asm("addeq r0, r0, #4 "); // r0=this.Ptr()
|
|
|
560 |
asm("cmp r1, #0 "); // check index>=0
|
|
|
561 |
asm("cmpge r3, r1 "); // if so, check Length()>index
|
|
|
562 |
asm("addgt r0, r0, r1 "); // return value = this.Ptr()+index
|
|
|
563 |
__JUMP(gt,lr);
|
|
|
564 |
asm("b " CSM_Z27Des8PanicDesIndexOutOfRangev);
|
|
|
565 |
}
|
|
|
566 |
|
|
|
567 |
__NAKED__ EXPORT_C TInt TDesC8::Locate(TChar /*aChar*/) const
|
|
|
568 |
//
|
|
|
569 |
// Locate character aChar in the descriptor.
|
|
|
570 |
//
|
|
|
571 |
{
|
|
|
572 |
asm("ldr r2, [r0], #4 "); // r2=length/type
|
|
|
573 |
asm("cmp r2, #0x50000000 ");
|
|
|
574 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
575 |
asm("bics r3, r2, #0xF0000000 "); // r3=length
|
|
|
576 |
asm("mvneq r0, #0 "); // if length=0, not found
|
|
|
577 |
__JUMP(eq,lr);
|
|
|
578 |
asm("eor r2, r2, r2, lsr #1 ");
|
|
|
579 |
asm("msr cpsr_flg, r2 ");
|
|
|
580 |
asm("addcs r0, r0, #4 ");
|
|
|
581 |
asm("ldrle r0, [r0] ");
|
|
|
582 |
asm("addeq r0, r0, #4 "); // r0=this.Ptr()
|
|
|
583 |
asm("add r3, r3, r0 "); // r3=ptr+length
|
|
|
584 |
asm("add r12, r0, #1 "); // r12=ptr+1
|
|
|
585 |
asm("1: ");
|
|
|
586 |
asm("ldrb r2, [r0], #1 "); // r2=*r0++
|
|
|
587 |
asm("cmp r1, r2 "); // is r1=match char?
|
|
|
588 |
asm("cmpne r0, r3 "); // if not, is r0=r3 (end pointer)
|
|
|
589 |
asm("bne 1b ");
|
|
|
590 |
asm("cmp r1, r2 "); // did we find char?
|
|
|
591 |
asm("subeq r0, r0, r12 "); // if we did, return value = r0-ptr-1
|
|
|
592 |
asm("mvnne r0, #0 "); // else return value =-1
|
|
|
593 |
__JUMP(,lr);
|
|
|
594 |
}
|
|
|
595 |
|
|
|
596 |
__NAKED__ EXPORT_C TInt TDesC8::LocateReverse(TChar /*aChar*/) const
|
|
|
597 |
//
|
|
|
598 |
// Locate character aChar in the descriptor in reverse.
|
|
|
599 |
//
|
|
|
600 |
{
|
|
|
601 |
asm("ldr r2, [r0], #4 "); // r2=length/type
|
|
|
602 |
asm("cmp r2, #0x50000000 ");
|
|
|
603 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
604 |
asm("bics r3, r2, #0xF0000000 "); // r3=length
|
|
|
605 |
asm("mvneq r0, #0 "); // if length=0, not found
|
|
|
606 |
__JUMP(eq,lr);
|
|
|
607 |
asm("eor r2, r2, r2, lsr #1 ");
|
|
|
608 |
asm("msr cpsr_flg, r2 ");
|
|
|
609 |
asm("addcs r0, r0, #4 ");
|
|
|
610 |
asm("ldrle r0, [r0] ");
|
|
|
611 |
asm("addeq r0, r0, #4 "); // r0=this.Ptr()
|
|
|
612 |
asm("sub r0, r0, #1 "); // r0=Ptr-1
|
|
|
613 |
asm("1: ");
|
|
|
614 |
asm("ldrb r2, [r0, r3] "); // r2=Ptr[r3-1]
|
|
|
615 |
asm("cmp r1, r2 "); // is r1=match char?
|
|
|
616 |
asm("subnes r3, r3, #1 "); // if not, decrement char count
|
|
|
617 |
asm("bne 1b ");
|
|
|
618 |
asm("cmp r1, r2 "); // did we find match char?
|
|
|
619 |
asm("subeq r0, r3, #1 "); // if we did, return value = r3-1
|
|
|
620 |
asm("mvnne r0, #0 "); // else return value =-1
|
|
|
621 |
__JUMP(,lr);
|
|
|
622 |
}
|
|
|
623 |
|
|
|
624 |
#ifndef __KERNEL_MODE__
|
|
|
625 |
__NAKED__ EXPORT_C TInt TDesC8::CompareF(const TDesC8& /*aDes*/) const
|
|
|
626 |
//
|
|
|
627 |
// Compare a descriptor to this descriptor folded.
|
|
|
628 |
//
|
|
|
629 |
{
|
|
|
630 |
asm("ldr r12, 1f ");
|
|
|
631 |
asm("b comparebody ");
|
|
|
632 |
asm("1: ");
|
|
|
633 |
asm(".word " CSM_ZN3Mem8CompareFEPKhiS0_i);
|
|
|
634 |
}
|
|
|
635 |
|
|
|
636 |
__NAKED__ EXPORT_C TInt TDesC8::CompareC(const TDesC8& /*aDes*/) const
|
|
|
637 |
//
|
|
|
638 |
// Compare a descriptor to this descriptor collated.
|
|
|
639 |
//
|
|
|
640 |
{
|
|
|
641 |
asm("ldr r12, 1f ");
|
|
|
642 |
asm("b comparebody ");
|
|
|
643 |
asm("1: ");
|
|
|
644 |
asm(".word " CSM_ZN3Mem8CompareCEPKhiS0_i);
|
|
|
645 |
}
|
|
|
646 |
#endif
|
|
|
647 |
|
|
|
648 |
__NAKED__ EXPORT_C TInt TDesC8::Compare(const TDesC8& /*aDes*/) const
|
|
|
649 |
//
|
|
|
650 |
// Compare a descriptor to this descriptor.
|
|
|
651 |
//
|
|
|
652 |
{
|
|
|
653 |
asm("ldr r12, 1f ");
|
|
|
654 |
asm("comparebody: ");
|
|
|
655 |
asm("mov r2, r1 "); // r2=&aDes
|
|
|
656 |
asm("ldr r3, [r0], #4 "); // r3=this.length/type
|
|
|
657 |
asm("cmp r3, #0x50000000 ");
|
|
|
658 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
659 |
asm("bic r1, r3, #0xF0000000 "); // r1=this.Length()
|
|
|
660 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
661 |
asm("msr cpsr_flg, r3 ");
|
|
|
662 |
asm("addcs r0, r0, #4 ");
|
|
|
663 |
asm("ldrle r0, [r0] ");
|
|
|
664 |
asm("addeq r0, r0, #4 "); // r0=this.Ptr()
|
|
|
665 |
asm("ldr r3, [r2], #4 "); // r3=aDes.length/type
|
|
|
666 |
asm("cmp r3, #0x50000000 ");
|
|
|
667 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
668 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
669 |
asm("msr cpsr_flg, r3 ");
|
|
|
670 |
asm("ldr r3, [r2, #-4] ");
|
|
|
671 |
asm("bic r3, r3, #0xF0000000 "); // r3=aDes.Length()
|
|
|
672 |
asm("addcs r2, r2, #4 ");
|
|
|
673 |
asm("ldrle r2, [r2] ");
|
|
|
674 |
asm("addeq r2, r2, #4 "); // r2=aDes.Ptr()
|
|
|
675 |
__JUMP(,r12);
|
|
|
676 |
|
|
|
677 |
asm("1: ");
|
|
|
678 |
asm(".word memcompare ");
|
|
|
679 |
}
|
|
|
680 |
#endif // __DES8_MACHINE_CODED__
|
|
|
681 |
|
|
|
682 |
#if defined(__DES8_MACHINE_CODED__) && !defined(__EABI__)
|
|
|
683 |
__NAKED__ EXPORT_C TPtrC8 TDesC8::Left(TInt /*aLength*/) const
|
|
|
684 |
//
|
|
|
685 |
// Extract the left portion of the descriptor.
|
|
|
686 |
//
|
|
|
687 |
{
|
|
|
688 |
// On entry r0=this, r1=aLength
|
|
|
689 |
// Return TPtrC8 in r0,r1
|
|
|
690 |
asm("ldr r3, [r0], #4 "); // r3=this.length/type
|
|
|
691 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
692 |
asm("cmp r1, #0 "); // check aLength>=0
|
|
|
693 |
asm("blt " CSM_Z22Des8PanicPosOutOfRangev); // if not panic
|
|
|
694 |
asm("cmp r1, r12 "); // else limit aLength to Length()
|
|
|
695 |
asm("movgt r1, r12 ");
|
|
|
696 |
asm("cmp r3, #0x50000000 ");
|
|
|
697 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
698 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
699 |
asm("msr cpsr_flg, r3 ");
|
|
|
700 |
asm("addcs r0, r0, #4 ");
|
|
|
701 |
asm("ldrle r0, [r0] ");
|
|
|
702 |
asm("addeq r0, r0, #4 "); // r0=this.Ptr()
|
|
|
703 |
asm("orr r2, r1, #0x10000000 "); // r2=aLength + EPtrC
|
|
|
704 |
asm("mov r1, r0 "); // r1=result ptr
|
|
|
705 |
asm("mov r0, r2 "); // r0=result type/length
|
|
|
706 |
__JUMP(,lr);
|
|
|
707 |
}
|
|
|
708 |
|
|
|
709 |
__NAKED__ EXPORT_C TPtrC8 TDesC8::Right(TInt /*aLength*/) const
|
|
|
710 |
//
|
|
|
711 |
// Extract the right portion of the descriptor.
|
|
|
712 |
//
|
|
|
713 |
{
|
|
|
714 |
// On entry r0=this, r1=aLength
|
|
|
715 |
// Return TPtrC8 in r0,r1
|
|
|
716 |
asm("ldr r3, [r0], #4 "); // r3=this.length/type
|
|
|
717 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
718 |
asm("cmp r1, #0 "); // check aLength>=0
|
|
|
719 |
asm("blt " CSM_Z22Des8PanicPosOutOfRangev); // if not, panic
|
|
|
720 |
asm("cmp r1, r12 "); // else limit aLength to Length()
|
|
|
721 |
asm("movgt r1, r12 ");
|
|
|
722 |
asm("cmp r3, #0x50000000 ");
|
|
|
723 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
724 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
725 |
asm("msr cpsr_flg, r3 ");
|
|
|
726 |
asm("addcs r0, r0, #4 ");
|
|
|
727 |
asm("ldrle r0, [r0] ");
|
|
|
728 |
asm("addeq r0, r0, #4 "); // r0=this.Ptr()
|
|
|
729 |
asm("add r3, r0, r12 "); // r3=this.Ptr()+len
|
|
|
730 |
asm("orr r0, r1, #0x10000000 "); // r0=aLength + EPtrC
|
|
|
731 |
asm("sub r1, r3, r1 "); // r1=Ptr()+len-aLength
|
|
|
732 |
__JUMP(,lr);
|
|
|
733 |
}
|
|
|
734 |
|
|
|
735 |
__NAKED__ EXPORT_C TPtrC8 TDesC8::Mid(TInt /*aPos*/) const
|
|
|
736 |
//
|
|
|
737 |
// Extract the middle portion of the descriptor.
|
|
|
738 |
//
|
|
|
739 |
{
|
|
|
740 |
// On entry r0=this, r1=aPos
|
|
|
741 |
// Return TPtrC8 in r0,r1
|
|
|
742 |
asm("ldr r3, [r0], #4 "); // r3=this.length/type
|
|
|
743 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
744 |
asm("cmp r1, #0 "); // check aPos>=0
|
|
|
745 |
asm("cmpge r12, r1 "); // if so check Length()>=aPos
|
|
|
746 |
asm("blt " CSM_Z22Des8PanicPosOutOfRangev);
|
|
|
747 |
asm("cmp r3, #0x50000000 ");
|
|
|
748 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
749 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
750 |
asm("msr cpsr_flg, r3 ");
|
|
|
751 |
asm("addcs r0, r0, #4 ");
|
|
|
752 |
asm("ldrle r0, [r0] ");
|
|
|
753 |
asm("addeq r0, r0, #4 "); // r0=this.Ptr()
|
|
|
754 |
asm("sub r2, r12, r1 "); // r2=len-aPos
|
|
|
755 |
asm("add r1, r0, r1 "); // r1=this.Ptr()+aPos
|
|
|
756 |
asm("orr r0, r2, #0x10000000 "); // r0=aLength + EPtrC
|
|
|
757 |
__JUMP(,lr);
|
|
|
758 |
}
|
|
|
759 |
|
|
|
760 |
__NAKED__ EXPORT_C TPtrC8 TDesC8::Mid(TInt /*aPos*/,TInt /*aLength*/) const
|
|
|
761 |
//
|
|
|
762 |
// Extract the middle portion of the descriptor.
|
|
|
763 |
//
|
|
|
764 |
{
|
|
|
765 |
// On entry r0=this, r1=aPos, r2=aLength
|
|
|
766 |
// Return TPtrC8 in r0,r1
|
|
|
767 |
asm("ldr r12, [r0], #4 "); // r12=this.length/type
|
|
|
768 |
asm("cmp r12, #0x50000000 "); // check valid descriptor type
|
|
|
769 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
770 |
asm("eor r12, r12, r12, lsr #1 ");
|
|
|
771 |
asm("msr cpsr_flg, r12 ");
|
|
|
772 |
asm("ldr r12, [r0, #-4] ");
|
|
|
773 |
asm("bic r12, r12, #0xF0000000 "); // r12=Length()
|
|
|
774 |
asm("addcs r0, r0, #4 ");
|
|
|
775 |
asm("ldrle r0, [r0] ");
|
|
|
776 |
asm("addeq r0, r0, #4 "); // r0=this.Ptr()
|
|
|
777 |
asm("cmp r1, #0 "); // check aPos>=0
|
|
|
778 |
asm("subge r12, r12, r1 "); // if so, r12=Length()-aPos
|
|
|
779 |
asm("cmpge r12, r2 "); // and check Length()-aPos>=aLength
|
|
|
780 |
asm("addge r1, r1, r0 "); // if so, r1=Ptr()+aPos
|
|
|
781 |
asm("orrge r0, r2, #0x10000000 "); // and r0 = aLength + EPtrC
|
|
|
782 |
__JUMP(ge,lr);
|
|
|
783 |
asm("b " CSM_Z22Des8PanicPosOutOfRangev);
|
|
|
784 |
}
|
|
|
785 |
#endif // defined(__DES8_MACHINE_CODED__) && !defined(__EABI__)
|
|
|
786 |
|
|
|
787 |
#ifdef __DES8_MACHINE_CODED__
|
|
|
788 |
|
|
|
789 |
// Here are the __EABI__ compliant versions of the above
|
|
|
790 |
#ifdef __EABI__
|
|
|
791 |
|
|
|
792 |
__NAKED__ EXPORT_C TPtrC8 TDesC8::Left(TInt /*aLength*/) const
|
|
|
793 |
//
|
|
|
794 |
// Extract the left portion of the descriptor.
|
|
|
795 |
//
|
|
|
796 |
{
|
|
|
797 |
// On entry r0=return store ptr, r1=this, r2=aLength
|
|
|
798 |
// Return TPtrC8 ([r0]=length/type,[r0,#4]=Ptr)
|
|
|
799 |
asm("ldr r3, [r1], #4 "); // r3=this.length/type
|
|
|
800 |
asm("cmp r2, #0 "); // check aLength>=0
|
|
|
801 |
asm("blt Des8PanicPosOutOfRange__Fv "); // if not panic
|
|
|
802 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
803 |
asm("cmp r2, r12 "); // limit aLength to Length()
|
|
|
804 |
asm("movgt r2, r12 ");
|
|
|
805 |
asm("cmp r3, #0x50000000 "); // check type() <= 4
|
|
|
806 |
asm("bcs Des8PanicBadDesType__Fv "); // if not, panic
|
|
|
807 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
808 |
asm("msr cpsr_flg, r3 ");
|
|
|
809 |
asm("addcs r1, r1, #4 ");
|
|
|
810 |
asm("ldrle r1, [r1] ");
|
|
|
811 |
asm("addeq r1, r1, #4 "); // r1=this.Ptr()
|
|
|
812 |
asm("mov r3, r1"); // r3=this.Ptr()
|
|
|
813 |
asm("orr r1, r2, #0x10000000 "); // r1=aLength + EPtrC
|
|
|
814 |
asm("stmia r0, {r1,r3} ");
|
|
|
815 |
__JUMP(,lr);
|
|
|
816 |
}
|
|
|
817 |
|
|
|
818 |
__NAKED__ EXPORT_C TPtrC8 TDesC8::Right(TInt /*aLength*/) const
|
|
|
819 |
//
|
|
|
820 |
// Extract the right portion of the descriptor.
|
|
|
821 |
//
|
|
|
822 |
{
|
|
|
823 |
// On entry r0=return store ptr, r1=this, r2=aLength
|
|
|
824 |
// Return TPtrC8 ([r0]=length/type,[r0,#4]=Ptr)
|
|
|
825 |
asm("ldr r3, [r1], #4 "); // r3=this.length/type
|
|
|
826 |
asm("cmp r2, #0 "); // check aLength>=0
|
|
|
827 |
asm("blt Des8PanicPosOutOfRange__Fv "); // if not, panic
|
|
|
828 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
829 |
asm("cmp r2, r12 "); // limit aLength to Length()
|
|
|
830 |
asm("movgt r2, r12 ");
|
|
|
831 |
asm("cmp r3, #0x50000000 "); // check type() <= 4
|
|
|
832 |
asm("bcs Des8PanicBadDesType__Fv ");
|
|
|
833 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
834 |
asm("msr cpsr_flg, r3 ");
|
|
|
835 |
asm("addcs r1, r1, #4 ");
|
|
|
836 |
asm("ldrle r1, [r1] ");
|
|
|
837 |
asm("addeq r1, r1, #4 "); // r3=this.Ptr()
|
|
|
838 |
asm("add r3, r1, r12 "); // r3=this.Ptr()+Length()
|
|
|
839 |
asm("orr r1, r2, #0x10000000 "); // r1=aLength + EPtrC
|
|
|
840 |
asm("sub r3, r3, r2 "); // r3=Ptr()+Length()-aLength
|
|
|
841 |
asm("stmia r0, {r1,r3} ");
|
|
|
842 |
__JUMP(,lr);
|
|
|
843 |
}
|
|
|
844 |
|
|
|
845 |
__NAKED__ EXPORT_C TPtrC8 TDesC8::Mid(TInt /*aPos*/) const
|
|
|
846 |
//
|
|
|
847 |
// Extract the middle portion of the descriptor.
|
|
|
848 |
//
|
|
|
849 |
{
|
|
|
850 |
// On entry r0=return store ptr, r1=this, r2=aPos
|
|
|
851 |
// Return TPtrC8 ([r0]=length/type,[r0,#4]=Ptr)
|
|
|
852 |
asm("ldr r3, [r1], #4 "); // r3=this.length/type
|
|
|
853 |
asm("bic r12, r3, #0xF0000000 "); // r12=this.Length()
|
|
|
854 |
asm("cmp r2, #0 "); // check aPos>=0
|
|
|
855 |
asm("cmpge r12, r2 "); // if so check Length()>=aPos
|
|
|
856 |
asm("blt Des8PanicPosOutOfRange__Fv ");
|
|
|
857 |
asm("cmp r3, #0x50000000 "); // check type() <= 4
|
|
|
858 |
asm("bcs Des8PanicBadDesType__Fv ");
|
|
|
859 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
860 |
asm("msr cpsr_flg, r3 ");
|
|
|
861 |
asm("addcs r1, r1, #4 ");
|
|
|
862 |
asm("ldrle r1, [r1] ");
|
|
|
863 |
asm("addeq r1, r1, #4 "); // r1=this.Ptr()
|
|
|
864 |
asm("add r3, r1, r2 "); // r3=this.Ptr()+aPos
|
|
|
865 |
asm("sub r2, r12, r2 "); // r2=Length()-aPos (=newMaxLen)
|
|
|
866 |
asm("orr r1, r2, #0x10000000 "); // r1=Length()-aPos + EPtrC (=newLen/Type)
|
|
|
867 |
asm("stmia r0, {r1,r3} ");
|
|
|
868 |
__JUMP(,lr);
|
|
|
869 |
}
|
|
|
870 |
|
|
|
871 |
__NAKED__ EXPORT_C TPtrC8 TDesC8::Mid(TInt /*aPos*/,TInt /*aLength*/) const
|
|
|
872 |
//
|
|
|
873 |
// Extract the middle portion of the descriptor.
|
|
|
874 |
//
|
|
|
875 |
{
|
|
|
876 |
// On entry r0=return store ptr, r1=this, r2=aPos, r3=aLength
|
|
|
877 |
// Return TPtrC8 ([r0]=length/type,[r0,#4]=Ptr)
|
|
|
878 |
asm("ldr r12, [r1], #4 "); // r12=this.length/type
|
|
|
879 |
asm("cmp r12, #0x50000000 "); // check valid descriptor type
|
|
|
880 |
asm("bcs Des8PanicBadDesType__Fv ");
|
|
|
881 |
asm("eor r12, r12, r12, lsr #1 ");
|
|
|
882 |
asm("msr cpsr_flg, r12 ");
|
|
|
883 |
asm("ldr r12, [r1, #-4] ");
|
|
|
884 |
asm("addcs r1, r1, #4 ");
|
|
|
885 |
asm("ldrle r1, [r1] ");
|
|
|
886 |
asm("bic r12, r12, #0xF0000000 "); // r12=Length()
|
|
|
887 |
asm("addeq r1, r1, #4 "); // r1=this.Ptr()
|
|
|
888 |
asm("cmp r2, #0 "); // check aPos>=0
|
|
|
889 |
asm("subge r12, r12, r2 "); // if so, r12=Length()-aPos
|
|
|
890 |
asm("cmpge r12, r3 "); // and check Length()-aPos>=aLength
|
|
|
891 |
asm("addge r2, r1, r2 "); // if so r2=this.Ptr()+aPos
|
|
|
892 |
asm("orrge r1, r3, #0x10000000 "); // and r1=aLength + EPtrC
|
|
|
893 |
asm("stmgeia r0, {r1,r2} ");
|
|
|
894 |
__JUMP(ge,lr);
|
|
|
895 |
asm("b Des8PanicPosOutOfRange__Fv ");
|
|
|
896 |
}
|
|
|
897 |
#endif
|
|
|
898 |
|
|
|
899 |
__NAKED__ EXPORT_C void TDes8::Zero()
|
|
|
900 |
//
|
|
|
901 |
// Zero the buffer.
|
|
|
902 |
//
|
|
|
903 |
{
|
|
|
904 |
asm("ldr r1, [r0] "); // r1=length/type
|
|
|
905 |
asm("and r1, r1, #0xF0000000 "); // r1=type field, zero length
|
|
|
906 |
asm("cmp r1, #0x40000000 "); // check for EBufCPtr
|
|
|
907 |
asm("str r1, [r0] "); // store zero length
|
|
|
908 |
__JUMP(ne,lr);
|
|
|
909 |
asm("ldr r2, [r0, #8] "); // r2 = pointer to TBufCBase
|
|
|
910 |
asm("mov r1, #0 ");
|
|
|
911 |
asm("str r1, [r2] "); // update length of TBufCBase
|
|
|
912 |
__JUMP(,lr);
|
|
|
913 |
}
|
|
|
914 |
|
|
|
915 |
#ifndef __KERNEL_MODE__
|
|
|
916 |
__NAKED__ EXPORT_C void TDes8::ZeroTerminate()
|
|
|
917 |
//
|
|
|
918 |
// Zero terminate at Length().
|
|
|
919 |
//
|
|
|
920 |
{
|
|
|
921 |
// Fall through to PtrZ below...
|
|
|
922 |
}
|
|
|
923 |
|
|
|
924 |
__NAKED__ EXPORT_C const TUint8 *TDes8::PtrZ()
|
|
|
925 |
//
|
|
|
926 |
// Return a pointer to a 0 terminated string.
|
|
|
927 |
//
|
|
|
928 |
{
|
|
|
929 |
asm("ldmia r0, {r1,r2} "); // r1=length/type, r2=maxlength
|
|
|
930 |
asm("bic r3, r1, #0xF0000000 "); // r3=Length();
|
|
|
931 |
asm("cmp r3, r2 "); // check Length()<MaxLength()
|
|
|
932 |
asm("bge " CSM_Z20Des8PanicDesOverflowv);
|
|
|
933 |
asm("cmp r1, #0x50000000 ");
|
|
|
934 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
935 |
asm("eor r1, r1, r1, lsr #1 ");
|
|
|
936 |
asm("msr cpsr_flg, r1 ");
|
|
|
937 |
asm("add r0, r0, #4 ");
|
|
|
938 |
asm("addcs r0, r0, #4 ");
|
|
|
939 |
asm("ldrle r0, [r0] ");
|
|
|
940 |
asm("addeq r0, r0, #4 "); // r0=Ptr()
|
|
|
941 |
asm("mov r2, #0 ");
|
|
|
942 |
asm("strb r2, [r0, r3] "); // Ptr()[Length()]=0;
|
|
|
943 |
__JUMP(,lr);
|
|
|
944 |
}
|
|
|
945 |
#endif
|
|
|
946 |
|
|
|
947 |
__NAKED__ EXPORT_C void TDes8::Append(TChar /*aChar*/)
|
|
|
948 |
//
|
|
|
949 |
// Add a character at the end of the string.
|
|
|
950 |
//
|
|
|
951 |
{
|
|
|
952 |
asm("ldmia r0, {r2,r3} "); // r2=length/type, r3=maxlength
|
|
|
953 |
asm("bic r12, r2, #0xF0000000 "); // r12=Length();
|
|
|
954 |
asm("cmp r12, r3 "); // check Length()<MaxLength()
|
|
|
955 |
asm("bge " CSM_Z20Des8PanicDesOverflowv);
|
|
|
956 |
asm("cmp r2, #0x50000000 ");
|
|
|
957 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
958 |
asm("add r2, r2, #1 "); // increment length by 1
|
|
|
959 |
asm("str r2, [r0] "); // store new length
|
|
|
960 |
asm("eor r2, r2, r2, lsr #1 ");
|
|
|
961 |
asm("msr cpsr_flg, r2 ");
|
|
|
962 |
asm("add r2, r0, #4 "); // r2=this+4
|
|
|
963 |
asm("addcs r2, r2, #4 ");
|
|
|
964 |
asm("ldrle r2, [r2] ");
|
|
|
965 |
asm("addeq r3, r12, #1 "); // if EBufCPtr, r3=Length()+1
|
|
|
966 |
asm("streq r3, [r2], #4 "); // and update length of TBufCBase, r2=Ptr()
|
|
|
967 |
asm("strb r1, [r2, r12] "); // Ptr()[Length()]=aChar;
|
|
|
968 |
__JUMP(,lr);
|
|
|
969 |
}
|
|
|
970 |
|
|
|
971 |
__NAKED__ EXPORT_C void TDes8::Append(const TDesC8& /*aDes*/)
|
|
|
972 |
//
|
|
|
973 |
// Append a descriptor to this descriptor.
|
|
|
974 |
//
|
|
|
975 |
{
|
|
|
976 |
asm("ldr r3, [r1], #4 "); // r3=aDes.length/type
|
|
|
977 |
asm("cmp r3, #0x50000000 ");
|
|
|
978 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
979 |
asm("bics r2, r3, #0xF0000000 "); // r2=aDes.Length()
|
|
|
980 |
__JUMP(eq,lr);
|
|
|
981 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
982 |
asm("msr cpsr_flg, r3 ");
|
|
|
983 |
asm("addcs r1, r1, #4 ");
|
|
|
984 |
asm("ldrle r1, [r1] ");
|
|
|
985 |
asm("addeq r1, r1, #4 "); // r1=aDes.Ptr()
|
|
|
986 |
asm("b appendbody "); // use following routine for rest of job
|
|
|
987 |
}
|
|
|
988 |
|
|
|
989 |
__NAKED__ EXPORT_C void TDes8::Append(const TUint8* /*aBuf*/,TInt /*aLength*/)
|
|
|
990 |
//
|
|
|
991 |
// Append aLength from aBuf characters to the descriptor.
|
|
|
992 |
//
|
|
|
993 |
{
|
|
|
994 |
asm("cmp r2, #0 "); // check aLength>=0
|
|
|
995 |
__JUMP(eq,lr);
|
|
|
996 |
asm("blt " CSM_Z23Des8PanicLengthNegativev);
|
|
|
997 |
asm("appendbody: ");
|
|
|
998 |
asm("ldmia r0, {r3,r12} "); // r3=type/length, r12=maxlength
|
|
|
999 |
asm("cmp r3, #0x50000000 ");
|
|
|
1000 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
1001 |
asm("bic r3, r3, #0xF0000000 "); // r3=Length()
|
|
|
1002 |
asm("sub r12, r12, r3 "); // r12=MaxLength-Length
|
|
|
1003 |
asm("cmp r2, r12 "); // check aLength<=(MaxLength-Length)
|
|
|
1004 |
asm("bgt " CSM_Z20Des8PanicDesOverflowv);
|
|
|
1005 |
asm("ldr r12, [r0] ");
|
|
|
1006 |
asm("add r12, r12, r2 "); // new length/type field
|
|
|
1007 |
asm("str r12, [r0], #4 "); // store it
|
|
|
1008 |
asm("eor r12, r12, r12, lsr #1 ");
|
|
|
1009 |
asm("msr cpsr_flg, r12 ");
|
|
|
1010 |
asm("addcs r0, r0, #4 ");
|
|
|
1011 |
asm("ldrle r0, [r0] ");
|
|
|
1012 |
asm("ldreq r12, [r0] "); // fetch length from TBufCBase
|
|
|
1013 |
asm("addeq r12, r12, r2 "); // add aLength
|
|
|
1014 |
asm("streq r12, [r0], #4 "); // update length of TBufCBase, r0=Ptr()
|
|
|
1015 |
asm("add r0, r0, r3 "); // r0=Ptr()+Length()
|
|
|
1016 |
asm("b memmove ");
|
|
|
1017 |
}
|
|
|
1018 |
|
|
|
1019 |
__NAKED__ EXPORT_C void TDes8::FillZ()
|
|
|
1020 |
//
|
|
|
1021 |
// Fill the descriptor with 0.
|
|
|
1022 |
//
|
|
|
1023 |
{
|
|
|
1024 |
asm("ldr r2, [r0] "); // r2=length/type
|
|
|
1025 |
asm("cmp r2, #0x50000000 ");
|
|
|
1026 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
1027 |
asm("bic r1, r2, #0xF0000000 "); // r1=Length()
|
|
|
1028 |
asm("eor r2, r2, r2, lsr #1 ");
|
|
|
1029 |
asm("msr cpsr_flg, r2 ");
|
|
|
1030 |
asm("add r0, r0, #4 ");
|
|
|
1031 |
asm("addcs r0, r0, #4 ");
|
|
|
1032 |
asm("ldrle r0, [r0] ");
|
|
|
1033 |
asm("addeq r0, r0, #4 "); // r0=Ptr()
|
|
|
1034 |
asm("b memclr ");
|
|
|
1035 |
}
|
|
|
1036 |
|
|
|
1037 |
__NAKED__ EXPORT_C void TDes8::Fill(TChar /*aChar*/)
|
|
|
1038 |
//
|
|
|
1039 |
// Fill the descriptor with aChar.
|
|
|
1040 |
//
|
|
|
1041 |
{
|
|
|
1042 |
asm("ldr r3, [r0] "); // r3=length/type
|
|
|
1043 |
asm("cmp r3, #0x50000000 ");
|
|
|
1044 |
asm("bcs " CSM_Z19Des8PanicBadDesTypev);
|
|
|
1045 |
asm("bic r2, r3, #0xF0000000 "); // r2=Length()
|
|
|
1046 |
asm("eor r3, r3, r3, lsr #1 ");
|
|
|
1047 |
asm("msr cpsr_flg, r3 ");
|
|
|
1048 |
asm("add r0, r0, #4 ");
|
|
|
1049 |
asm("addcs r0, r0, #4 ");
|
|
|
1050 |
asm("ldrle r0, [r0] ");
|
|
|
1051 |
asm("addeq r0, r0, #4 "); // r0=Ptr()
|
|
|
1052 |
asm("b memset "); // memset(Ptr(),aChar,Length())
|
|
|
1053 |
}
|
|
|
1054 |
#endif //__DES8_MACHINE_CODED__
|
|
|
1055 |
|
|
|
1056 |
#ifdef __DES_MACHINE_CODED__
|
|
|
1057 |
__NAKED__ GLDEF_C TInt __DoConvertNum(TUint /*aVal*/, TRadix /*aRadix*/, TUint /*aA*/, TUint8*& /*aDest*/)
|
|
|
1058 |
{
|
|
|
1059 |
asm("ldr ip, [r3] "); // ip = aDest
|
|
|
1060 |
asm("cmp r1, #16 ");
|
|
|
1061 |
asm("beq do_convert_hex ");
|
|
|
1062 |
asm("cmp r1, #10 ");
|
|
|
1063 |
asm("beq do_convert_dec ");
|
|
|
1064 |
#ifdef __KERNEL_MODE__
|
|
|
1065 |
asm("mov r0, #%a0" : : "i" ((TInt)EInvalidRadix));
|
|
|
1066 |
asm("b " CSM_Z5Panic9TCdtPanic);
|
|
|
1067 |
#else // !__KERNEL_MODE__
|
|
|
1068 |
asm("cmp r1, #2 ");
|
|
|
1069 |
asm("beq do_convert_bin ");
|
|
|
1070 |
asm("cmp r1, #8 ");
|
|
|
1071 |
asm("beq do_convert_oct ");
|
|
|
1072 |
asm("do_convert_any: ");
|
|
|
1073 |
asm("stmfd sp!, {r4-r8,lr} ");
|
|
|
1074 |
asm("mov r5, r1 "); // save radix
|
|
|
1075 |
asm("and r6, r2, #0xff ");
|
|
|
1076 |
asm("sub r6, r6, #10 "); // save aA - 10
|
|
|
1077 |
asm("mov r4, ip "); // r4 = aDest
|
|
|
1078 |
asm("mov r7, r3 "); // save &aDest
|
|
|
1079 |
asm("mov r8, r2"); // save aA
|
|
|
1080 |
asm("1: ");
|
|
|
1081 |
asm("mov r1, r5 "); // r1 = radix
|
|
|
1082 |
#ifndef __EABI__
|
|
|
1083 |
asm(".extern __umodsi3 ");
|
|
|
1084 |
asm("bl __umodsi3 "); // do division, quotient->r3, rem->r0
|
|
|
1085 |
asm("mov r1, r0"); // move to make regs same as EABI function
|
|
|
1086 |
asm("mov r0, r3");
|
|
|
1087 |
#else //__EABI__
|
|
|
1088 |
asm(".extern __aeabi_uidivmod ");
|
|
|
1089 |
asm("bl __aeabi_uidivmod "); // do division, quotient->r0, rem->r1
|
|
|
1090 |
#endif //__EABI__
|
|
|
1091 |
asm("cmp r1, #9 ");
|
|
|
1092 |
asm("addhi r1, r1, r6 "); // r1 = (r1 > 9) ? (r1 + (aA - 10)) : r1 + '0'
|
|
|
1093 |
asm("addls r1, r1, #0x30 ");
|
|
|
1094 |
asm("tst r8, #0x100 ");
|
|
|
1095 |
asm("strneh r1, [r4, #-2]! "); // *--r4 = (TUint16)r1
|
|
|
1096 |
asm("streqb r1, [r4, #-1]! "); // *--r4 = (TUint8)r1
|
|
|
1097 |
asm("movs r1, r0 "); // new aVal into r1
|
|
|
1098 |
asm("bne 1b ");
|
|
|
1099 |
asm("ldr ip, [r7] "); // ip can be scratched by __aeabi_uidivmod
|
|
|
1100 |
asm("str r4, [r7] "); // aDest = r4
|
|
|
1101 |
asm("sub r0, ip, r4 "); // return aDest - r4
|
|
|
1102 |
__POPRET("r4-r8,");
|
|
|
1103 |
|
|
|
1104 |
asm("do_convert_bin: ");
|
|
|
1105 |
asm("mov r2, r2, lsl #22 "); // aA bit 8 into bit 30
|
|
|
1106 |
asm("adds r2, r2, r2 "); // set V flag = aA bit 8
|
|
|
1107 |
asm("1: ");
|
|
|
1108 |
asm("movs r0, r0, lsr #1 "); // aVal>>=1, bit 0 into carry, V unaffected
|
|
|
1109 |
asm("mov r1, #0x30 "); // r1 = '0'
|
|
|
1110 |
asm("adc r1, r1, #0 "); // add in carry
|
|
|
1111 |
asm("strvsh r1, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1112 |
asm("strvcb r1, [ip, #-1]! "); // else store 8 bits
|
|
|
1113 |
asm("bne 1b "); // loop back if aVal still nonzero
|
|
|
1114 |
asm("ldr r1, [r3] "); // r1 = original aDest
|
|
|
1115 |
asm("str ip, [r3] "); // aDest = ip
|
|
|
1116 |
asm("sub r0, r1, ip "); // return aDest - ip
|
|
|
1117 |
__JUMP(,lr);
|
|
|
1118 |
|
|
|
1119 |
asm("do_convert_oct: ");
|
|
|
1120 |
asm("mov r2, r2, lsl #22 "); // aA bit 8 into bit 30
|
|
|
1121 |
asm("adds r2, r2, r2 "); // set V flag = aA bit 8
|
|
|
1122 |
asm("1: ");
|
|
|
1123 |
asm("and r1, r0, #7 "); // r1 = aVal & 7
|
|
|
1124 |
asm("movs r0, r0, lsr #3 "); // aVal>>=3, set Z accordingly, V unaffected
|
|
|
1125 |
asm("add r1, r1, #0x30 "); // r1 += '0'
|
|
|
1126 |
asm("strvsh r1, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1127 |
asm("strvcb r1, [ip, #-1]! "); // else store 8 bits
|
|
|
1128 |
asm("bne 1b "); // loop back if aVal still nonzero
|
|
|
1129 |
asm("ldr r1, [r3] "); // r1 = original aDest
|
|
|
1130 |
asm("str ip, [r3] "); // aDest = ip
|
|
|
1131 |
asm("sub r0, r1, ip "); // return aDest - ip
|
|
|
1132 |
__JUMP(,lr);
|
|
|
1133 |
#endif //__KERNEL_MODE__
|
|
|
1134 |
|
|
|
1135 |
asm("do_convert_hex: ");
|
|
|
1136 |
asm("mov r1, r2, lsl #22 "); // aA bit 8 into r1 bit 30
|
|
|
1137 |
asm("adds r1, r1, r1 "); // set V flag = aA bit 8
|
|
|
1138 |
asm("and r2, r2, #0xff ");
|
|
|
1139 |
asm("sub r2, r2, #0x40 ");
|
|
|
1140 |
asm("1: ");
|
|
|
1141 |
asm("and r1, r0, #15 "); // r1 = aVal & 15
|
|
|
1142 |
asm("add r1, r1, #0x36 "); // r1 += '0'+6
|
|
|
1143 |
asm("tst r1, #0x40 ");
|
|
|
1144 |
asm("subeq r1, r1, #6 ");
|
|
|
1145 |
asm("addne r1, r1, r2 ");
|
|
|
1146 |
asm("movs r0, r0, lsr #4 "); // aVal>>=4, V unaffected
|
|
|
1147 |
asm("strvsh r1, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1148 |
asm("strvcb r1, [ip, #-1]! "); // else store 8 bits
|
|
|
1149 |
asm("bne 1b "); // loop back if aVal still nonzero
|
|
|
1150 |
asm("ldr r1, [r3] "); // r1 = original aDest
|
|
|
1151 |
asm("str ip, [r3] "); // aDest = ip
|
|
|
1152 |
asm("sub r0, r1, ip "); // return aDest - ip
|
|
|
1153 |
__JUMP(,lr);
|
|
|
1154 |
|
|
|
1155 |
asm("do_convert_dec: ");
|
|
|
1156 |
asm("and r2, r2, #0x100 "); // mask all bits of aA except bit 8
|
|
|
1157 |
asm("orr r3, r3, r2, lsr #8 "); // r3 bit 0 = aA bit 8
|
|
|
1158 |
asm("1: ");
|
|
|
1159 |
asm("sub r1, r0, #10 "); // divide aVal by 10, r0=quotient, r1=remainder
|
|
|
1160 |
asm("sub r0, r0, r0, lsr #2 ");
|
|
|
1161 |
asm("add r0, r0, r0, lsr #4 ");
|
|
|
1162 |
asm("add r0, r0, r0, lsr #8 ");
|
|
|
1163 |
asm("add r0, r0, r0, lsr #16 ");
|
|
|
1164 |
asm("mov r0, r0, lsr #3 ");
|
|
|
1165 |
asm("add r2, r0, r0, lsl #2 ");
|
|
|
1166 |
asm("subs r1, r1, r2, lsl #1 ");
|
|
|
1167 |
asm("addpl r0, r0, #1 ");
|
|
|
1168 |
asm("addmi r1, r1, #10 ");
|
|
|
1169 |
asm("add r1, r1, #0x30 "); // add '0' to remainder
|
|
|
1170 |
asm("tst r3, #1 "); // test aA bit 8
|
|
|
1171 |
asm("strneh r1, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1172 |
asm("streqb r1, [ip, #-1]! "); // else store 8 bits
|
|
|
1173 |
asm("teq r0, #0 ");
|
|
|
1174 |
asm("bne 1b "); // loop back if aVal still nonzero
|
|
|
1175 |
asm("bic r3, r3, #1 ");
|
|
|
1176 |
asm("ldr r1, [r3] "); // r1 = original aDest
|
|
|
1177 |
asm("str ip, [r3] "); // aDest = ip
|
|
|
1178 |
asm("sub r0, r1, ip "); // return aDest - ip
|
|
|
1179 |
__JUMP(,lr);
|
|
|
1180 |
}
|
|
|
1181 |
|
|
|
1182 |
__NAKED__ GLDEF_C TInt __DoConvertNum(TUint64 /*aVal*/, TRadix /*aRadix*/, TUint /*aA*/, TUint8*& /*aDest*/)
|
|
|
1183 |
{
|
|
|
1184 |
asm("ldr ip, [sp] "); // ip = &aDest
|
|
|
1185 |
asm("cmp r2, #16 ");
|
|
|
1186 |
asm("beq do_convert_hex64 ");
|
|
|
1187 |
asm("cmp r2, #10 ");
|
|
|
1188 |
asm("beq do_convert_dec64 ");
|
|
|
1189 |
#ifdef __KERNEL_MODE__
|
|
|
1190 |
asm("mov r0, #%a0" : : "i" ((TInt)EInvalidRadix));
|
|
|
1191 |
asm("b " CSM_Z5Panic9TCdtPanic);
|
|
|
1192 |
#else // !__KERNEL_MODE__
|
|
|
1193 |
asm("cmp r2, #2 ");
|
|
|
1194 |
asm("beq do_convert_bin64 ");
|
|
|
1195 |
asm("cmp r2, #8 ");
|
|
|
1196 |
asm("beq do_convert_oct64 ");
|
|
|
1197 |
asm("stmfd sp!, {r4-r8,lr} ");
|
|
|
1198 |
asm("ldr r4, [ip] "); // r4 = aDest
|
|
|
1199 |
asm("mov r5, r2 "); // save radix
|
|
|
1200 |
asm("and r6, r3, #0xff "); // r6 = aA & 0xff
|
|
|
1201 |
asm("sub r6, r6, #10 "); // save a - 10
|
|
|
1202 |
asm("mov r7, ip "); // save &aDest
|
|
|
1203 |
asm("mov r8, r3"); // save aA
|
|
|
1204 |
asm("teq r1, #0 "); // aVal > 0xffffffffu
|
|
|
1205 |
asm("beq 2f ");
|
|
|
1206 |
asm("1: ");
|
|
|
1207 |
asm("mov r3, #0 ");
|
|
|
1208 |
asm("mov r2, r5 "); // r3:r2 = radix
|
|
|
1209 |
#ifndef __EABI__
|
|
|
1210 |
asm("stmfd sp!, {r4-r6} "); // push the registers that are scratched by UDiv01
|
|
|
1211 |
asm(".extern UDiv01 ");
|
|
|
1212 |
asm("bl UDiv01 "); // do division, quotient->r5:r4, rem->r6:r3
|
|
|
1213 |
asm("mov r0, r4"); // move to make regs same as EABI function
|
|
|
1214 |
asm("mov r1, r5");
|
|
|
1215 |
asm("mov r2, r3");
|
|
|
1216 |
asm("mov r3, r6");
|
|
|
1217 |
asm("ldmfd sp!, {r4-r6} "); // pop the registers that are scratched by UDiv01
|
|
|
1218 |
#else //__EABI__
|
|
|
1219 |
asm(".extern __aeabi_uldivmod ");
|
|
|
1220 |
asm("bl __aeabi_uldivmod "); // do division, quotient->r1:r0, rem->r3:r2
|
|
|
1221 |
#endif //__EABI__
|
|
|
1222 |
asm("cmp r2, #9 ");
|
|
|
1223 |
asm("addhi r2, r2, r6 "); // r2 = (r2>9) ? r2+aA-10 : r2+'0'
|
|
|
1224 |
asm("addls r2, r2, #0x30 ");
|
|
|
1225 |
asm("tst r8, #0x100 ");
|
|
|
1226 |
asm("strneh r2, [r4, #-2]! "); // *--r4 = (TUint16)r2
|
|
|
1227 |
asm("streqb r2, [r4, #-1]! "); // *--r4 = (TUint8)r2
|
|
|
1228 |
asm("teq r1, #0 "); // new aVal > 0xffffffffu
|
|
|
1229 |
asm("bne 1b ");
|
|
|
1230 |
asm("2: ");
|
|
|
1231 |
asm("mov r2, r8 "); // r2 = aA
|
|
|
1232 |
asm("ldr r1, [r7] "); // r1 = aDest
|
|
|
1233 |
asm("mov r3, r7 "); // r3 = &aDest
|
|
|
1234 |
asm("sub r6, r1, r4 "); // r6 = aDest - r4
|
|
|
1235 |
asm("mov r1, r5 "); // r1 = radix
|
|
|
1236 |
asm("str r4, [r3] "); // aDest = r4
|
|
|
1237 |
asm("mov ip, r4 "); // ip = aDest
|
|
|
1238 |
asm("bl do_convert_any ");
|
|
|
1239 |
asm("add r0, r0, r6 "); // r0 += r6
|
|
|
1240 |
__POPRET("r4-r8,");
|
|
|
1241 |
|
|
|
1242 |
asm("do_convert_bin64: ");
|
|
|
1243 |
asm("mov r2, ip "); // r2 = &aDest
|
|
|
1244 |
asm("ldr ip, [ip] "); // ip = aDest
|
|
|
1245 |
asm("mov r3, r3, lsl #22 "); // aA bit 8 into bit 30
|
|
|
1246 |
asm("adds r3, r3, r3 "); // set V flag = aA bit 8
|
|
|
1247 |
asm("teq r1, #0 "); // if (aVal <= 0xffffffffu)
|
|
|
1248 |
asm("moveq r1, ip "); // r1 = orig. aDest in second half
|
|
|
1249 |
asm("beq 2f "); // branch to second half of the loop
|
|
|
1250 |
asm("1: ");
|
|
|
1251 |
asm("movs r0, r0, lsr #1 "); // aVal >>= 1, bit 0 into carry, V unaffected
|
|
|
1252 |
asm("mov r3, #0x30 "); // r3 = '0'
|
|
|
1253 |
asm("adc r3, r3, #0 "); // add in carry
|
|
|
1254 |
asm("strvsh r3, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1255 |
asm("strvcb r3, [ip, #-1]! "); // else store 8 bits
|
|
|
1256 |
asm("bne 1b "); // loop back if (aVal & 0xffffffffu) still nonzero
|
|
|
1257 |
asm("ldr r0, [r2] "); // r0 = original aDest
|
|
|
1258 |
asm("subvc r0, r0, #32 "); // r0 = end of buffer for first word (8-bit descriptor)
|
|
|
1259 |
asm("subvs r0, r0, #64 "); // r0 = end of buffer for first word (16-bit descriptor)
|
|
|
1260 |
asm("teq ip, r0 "); // don't pad if we have already emitted 32 bits
|
|
|
1261 |
asm("beq finish_bin_zero_pad ");
|
|
|
1262 |
asm("bin_zero_pad: ");
|
|
|
1263 |
asm("mov r3, #0x30 "); // r3 = '0'
|
|
|
1264 |
asm("bin_zero_pad_loop: ");
|
|
|
1265 |
asm("strvsh r3, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1266 |
asm("strvcb r3, [ip, #-1]! "); // else store 8 bits
|
|
|
1267 |
asm("teq ip, r0 ");
|
|
|
1268 |
asm("bne bin_zero_pad_loop "); // loop back if padding not complete
|
|
|
1269 |
asm("finish_bin_zero_pad: ");
|
|
|
1270 |
asm("addvc r0, r0, #32 "); // r0 = original aDest
|
|
|
1271 |
asm("addvs r0, r0, #64 "); // r0 = original aDest
|
|
|
1272 |
asm("mov r3, r1 ");
|
|
|
1273 |
asm("mov r1, r0 ");
|
|
|
1274 |
asm("mov r0, r3 "); // r1 = orig aDest, r0 = aVal >> 32
|
|
|
1275 |
asm("2: ");
|
|
|
1276 |
asm("movs r0, r0, lsr #1 "); // aVal >>= 1, bit 0 into carry, V unaffected
|
|
|
1277 |
asm("mov r3, #0x30 "); // r3 = '0'
|
|
|
1278 |
asm("adc r3, r3, #0 "); // add in carry
|
|
|
1279 |
asm("strvsh r3, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1280 |
asm("strvcb r3, [ip, #-1]! "); // else store 8 bits
|
|
|
1281 |
asm("bne 2b "); // loop back if aVal still nonzero
|
|
|
1282 |
asm("str ip, [r2] "); // aDest = ip
|
|
|
1283 |
asm("sub r0, r1, ip "); // return aDest - ip
|
|
|
1284 |
__JUMP(,lr);
|
|
|
1285 |
|
|
|
1286 |
asm("do_convert_oct64: "); // Convert as 31 + 33 bits when > 32 bits
|
|
|
1287 |
asm("mov r2, ip "); // r2 = &aDest
|
|
|
1288 |
asm("ldr ip, [ip] "); // ip = aDest
|
|
|
1289 |
asm("mov r3, r3, lsl #22 "); // aA bit 8 into bit 30
|
|
|
1290 |
asm("adds r3, r3, r3 "); // set V flag = aA bit 8
|
|
|
1291 |
asm("teq r1, #0 "); // if (aVal <= 0xffffffffu)
|
|
|
1292 |
asm("moveq r1, ip "); // r1 = orig. aDest in second half
|
|
|
1293 |
asm("beq 3f "); // branch to second half of the loop
|
|
|
1294 |
asm("and r3, r0, #7 "); // r3 = aVal & 7
|
|
|
1295 |
asm("mov r0, r0, lsr #3 "); // aVal>>=3, set Z accordingly, V unaffected
|
|
|
1296 |
asm("orr r0, r0, r1, lsl #29 "); // note we now have the bottom 33 bits in r0:r3[2:0]
|
|
|
1297 |
asm("ands r0, r0, #0x3fffffff "); // and the top 31 bits in r1
|
|
|
1298 |
asm("mov r1, r1, lsr #1 ");
|
|
|
1299 |
asm("add r3, r3, #0x30 "); // r3 += '0'
|
|
|
1300 |
asm("strvsh r3, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1301 |
asm("strvcb r3, [ip, #-1]! "); // else store 8 bits
|
|
|
1302 |
asm("beq 2f ");
|
|
|
1303 |
asm("1: ");
|
|
|
1304 |
asm("and r3, r0, #7 "); // r3 = aVal & 7
|
|
|
1305 |
asm("movs r0, r0, lsr #3 "); // aVal>>=3, set Z accordingly, V unaffected
|
|
|
1306 |
asm("add r3, r3, #0x30 "); // r3 += '0'
|
|
|
1307 |
asm("strvsh r3, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1308 |
asm("strvcb r3, [ip, #-1]! "); // else store 8 bits
|
|
|
1309 |
asm("bne 1b "); // loop back if (aVal & 0xffffffff) still nonzero
|
|
|
1310 |
asm("2: ");
|
|
|
1311 |
asm("ldr r0, [r2] "); // r0 = original aDest
|
|
|
1312 |
asm("subvc r0, r0, #11 "); // r0 = end of buffer for first word (8-bit descriptor)
|
|
|
1313 |
asm("subvs r0, r0, #22 "); // r0 = end of buffer for first word (16-bit descriptor)
|
|
|
1314 |
asm("teq ip, r0 "); // don't pad if we have already emitted 32 bits
|
|
|
1315 |
asm("beq finish_oct_zero_pad ");
|
|
|
1316 |
asm("oct_zero_pad: ");
|
|
|
1317 |
asm("mov r3, #0x30 "); // r3 = '0'
|
|
|
1318 |
asm("oct_zero_pad_loop: ");
|
|
|
1319 |
asm("strvsh r3, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1320 |
asm("strvcb r3, [ip, #-1]! "); // else store 8 bits
|
|
|
1321 |
asm("teq ip, r0 ");
|
|
|
1322 |
asm("bne oct_zero_pad_loop "); // loop back if padding not complete
|
|
|
1323 |
asm("finish_oct_zero_pad: ");
|
|
|
1324 |
asm("addvc r0, r0, #11 "); // r0 = original aDest
|
|
|
1325 |
asm("addvs r0, r0, #22 "); // r0 = original aDest
|
|
|
1326 |
asm("mov r3, r0 ");
|
|
|
1327 |
asm("mov r0, r1 ");
|
|
|
1328 |
asm("mov r1, r3 "); // r1 = orig aDest, r0 = aVal >> 32
|
|
|
1329 |
asm("3: ");
|
|
|
1330 |
asm("and r3, r0, #7 "); // r3 = aVal & 7
|
|
|
1331 |
asm("movs r0, r0, lsr #3 "); // aVal>>=3, set Z accordingly, V unaffected
|
|
|
1332 |
asm("add r3, r3, #0x30 "); // r3 += '0'
|
|
|
1333 |
asm("strvsh r3, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1334 |
asm("strvcb r3, [ip, #-1]! "); // else store 8 bits
|
|
|
1335 |
asm("bne 3b "); // loop back if aVal still nonzero
|
|
|
1336 |
asm("str ip, [r2] "); // aDest = ip
|
|
|
1337 |
asm("sub r0, r1, ip "); // return aDest - ip
|
|
|
1338 |
__JUMP(,lr);
|
|
|
1339 |
|
|
|
1340 |
#endif //__KERNEL_MODE__
|
|
|
1341 |
|
|
|
1342 |
asm("do_convert_hex64: ");
|
|
|
1343 |
asm("ldr ip, [ip] "); // ip = aDest
|
|
|
1344 |
asm("mov r2, r3, lsl #22 "); // aA bit 8 into r2 bit 30
|
|
|
1345 |
asm("adds r2, r2, r2 "); // set V flag = aA bit 8
|
|
|
1346 |
asm("and r3, r3, #0xff "); // aA = aA & 0xff
|
|
|
1347 |
asm("teq r1, #0 "); // if (aVal <= 0xffffffffu)
|
|
|
1348 |
asm("sub r3, r3, #0x40 "); // bias by ('0' + 16) either way => r3 = aA - ('0' + 16)
|
|
|
1349 |
asm("moveq r1, ip "); // r1 = orig. aDest in second half
|
|
|
1350 |
asm("beq 2f "); // branch to second half of the loop
|
|
|
1351 |
asm("1: ");
|
|
|
1352 |
asm("and r2, r0, #0xf "); // r2 = aVal & 0xf
|
|
|
1353 |
asm("add r2, r2, #0x36 "); // r2 += ('0' + 6)
|
|
|
1354 |
asm("tst r2, #0x40 "); // if ((aVal & 0xf) > 9)
|
|
|
1355 |
asm("addne r2, r2, r3 "); // r2 = (aVal & 0xf) + (aA - 10)
|
|
|
1356 |
asm("subeq r2, r2, #6 "); // r2 = (aVal & 0xf) + '0'
|
|
|
1357 |
asm("movs r0, r0, lsr #4 "); // aVal>>=4, V unaffected
|
|
|
1358 |
asm("strvsh r2, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1359 |
asm("strvcb r2, [ip, #-1]! "); // else store 8 bits
|
|
|
1360 |
asm("bne 1b "); // loop back if (aVal & 0xffffffffu) still nonzero
|
|
|
1361 |
asm("ldr r0, [sp] "); // r0 = &aDest
|
|
|
1362 |
asm("ldr r2, [r0] "); // r2 = original aDest
|
|
|
1363 |
asm("subvc r0, r2, #8 "); // r0 = end of buffer for first word (8-bit descriptor)
|
|
|
1364 |
asm("subvs r0, r2, #16 "); // r0 = end of buffer for first word (16-bit descriptor)
|
|
|
1365 |
asm("teq ip, r0 "); // don't pad if we have already emitted 32 bits
|
|
|
1366 |
asm("beq finish_hex_zero_pad ");
|
|
|
1367 |
asm("hex_zero_pad: ");
|
|
|
1368 |
asm("mov r2, #0x30 "); // r3 = '0'
|
|
|
1369 |
asm("hex_zero_pad_loop: ");
|
|
|
1370 |
asm("strvsh r2, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1371 |
asm("strvcb r2, [ip, #-1]! "); // else store 8 bits
|
|
|
1372 |
asm("teq ip, r0 ");
|
|
|
1373 |
asm("bne hex_zero_pad_loop "); // loop back if padding not complete
|
|
|
1374 |
asm("finish_hex_zero_pad: ");
|
|
|
1375 |
asm("addvc r0, r0, #8 "); // r0 = original aDest
|
|
|
1376 |
asm("addvs r0, r0, #16 "); // r0 = original aDest
|
|
|
1377 |
asm("mov r2, r0 ");
|
|
|
1378 |
asm("mov r0, r1 ");
|
|
|
1379 |
asm("mov r1, r2 "); // r1 = orig aDest, r0 = aVal >> 32
|
|
|
1380 |
asm("2: ");
|
|
|
1381 |
asm("and r2, r0, #0xf "); // r2 = aVal & 0xf
|
|
|
1382 |
asm("add r2, r2, #0x36 "); // r2 += '0'+6
|
|
|
1383 |
asm("tst r2, #0x40 ");
|
|
|
1384 |
asm("subeq r2, r2, #6 "); // r2 = (aVal & 0xf) + '0'
|
|
|
1385 |
asm("addne r2, r2, r3 "); // r2 = (aVal & 0xf) + (aA - 10)
|
|
|
1386 |
asm("movs r0, r0, lsr #4 "); // aVal>>=4, V unaffected
|
|
|
1387 |
asm("strvsh r2, [ip, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1388 |
asm("strvcb r2, [ip, #-1]! "); // else store 8 bits
|
|
|
1389 |
asm("bne 2b "); // loop back if aVal still nonzero
|
|
|
1390 |
asm("ldr r2, [sp] "); // r2 = &aDest
|
|
|
1391 |
asm("sub r0, r1, ip "); // return aDest - ip
|
|
|
1392 |
asm("str ip, [r2] "); // aDest = ip
|
|
|
1393 |
__JUMP(,lr);
|
|
|
1394 |
|
|
|
1395 |
#ifndef __FIXED_POINT_64BIT_DIV10__
|
|
|
1396 |
|
|
|
1397 |
asm("do_convert_dec64: "); // As generic case, except can save one reg as radix known
|
|
|
1398 |
asm("stmfd sp!, {r4-r6,lr} ");
|
|
|
1399 |
asm("ldr r4, [ip] "); // r4 = aDest
|
|
|
1400 |
asm("mov r5, ip "); // save &aDest
|
|
|
1401 |
asm("mov r6, r3"); // save aA
|
|
|
1402 |
asm("teq r1, #0 "); // aVal > 0xffffffffu
|
|
|
1403 |
asm("beq 2f ");
|
|
|
1404 |
asm("1: ");
|
|
|
1405 |
asm("mov r3, #0 ");
|
|
|
1406 |
asm("mov r2, #10 "); // r3:r2 = radix
|
|
|
1407 |
#ifndef __EABI__
|
|
|
1408 |
asm("stmfd sp!, {r4-r6} "); // push the registers that are scratched by UDiv01
|
|
|
1409 |
asm(".extern UDiv01 ");
|
|
|
1410 |
asm("bl UDiv01 "); // do division, quotient->r5:r4, rem->r6:r3
|
|
|
1411 |
asm("mov r0, r4"); // move to make regs same as EABI function
|
|
|
1412 |
asm("mov r1, r5");
|
|
|
1413 |
asm("mov r2, r3");
|
|
|
1414 |
asm("mov r3, r6");
|
|
|
1415 |
asm("ldmfd sp!, {r4-r6} "); // pop the registers that are scratched by UDiv01
|
|
|
1416 |
#else //__EABI__
|
|
|
1417 |
asm(".extern __aeabi_uldivmod ");
|
|
|
1418 |
asm("bl __aeabi_uldivmod "); // do division, quotient->r1:r0, rem->r3:r2
|
|
|
1419 |
#endif //__EABI__
|
|
|
1420 |
asm("add r2, r2, #0x30 "); // add '0' to remainder
|
|
|
1421 |
asm("tst r6, #0x100 ");
|
|
|
1422 |
asm("strneh r2, [r4, #-2]! "); // *--r4 = (TUint16)r2
|
|
|
1423 |
asm("streqb r2, [r4, #-1]! "); // *--r4 = (TUint8)r2
|
|
|
1424 |
asm("teq r1, #0 "); // new aVal > 0xffffffffu
|
|
|
1425 |
asm("bne 1b ");
|
|
|
1426 |
asm("2: ");
|
|
|
1427 |
asm("mov r2, r6 "); // r2 = aA
|
|
|
1428 |
asm("ldr r1, [r5] "); // r1 = original aDest
|
|
|
1429 |
asm("mov r3, r5 "); // r3 = &aDest
|
|
|
1430 |
asm("sub r6, r1, r4 "); // r6 = original aDest - r4
|
|
|
1431 |
asm("mov r1, #10 "); // r1 = radix
|
|
|
1432 |
asm("str r4, [r3] "); // aDest = r4
|
|
|
1433 |
asm("mov ip, r4 "); // ip = aDest
|
|
|
1434 |
asm("bl do_convert_dec ");
|
|
|
1435 |
asm("add r0, r0, r6 "); // r0 += r6
|
|
|
1436 |
__POPRET("r4-r6,");
|
|
|
1437 |
|
|
|
1438 |
#else //__FIXED_POINT_64BIT_DIV10__
|
|
|
1439 |
|
|
|
1440 |
asm("do_convert_dec64: "); // Be extra cunning by doing fixed-point arithmetic using only shifts, adds and subtracts
|
|
|
1441 |
asm("stmfd sp!, {r4-r7,lr} "); // - avoids costs of potentially inefficient calls to __aeabi_uldivmod
|
|
|
1442 |
asm("mov r4, r3 "); // r4 = aA
|
|
|
1443 |
asm("ldr r5, [ip] "); // r5 = aDest
|
|
|
1444 |
asm("teq r1, #0 "); // aVal > 0xffffffffu
|
|
|
1445 |
asm("beq 2f ");
|
|
|
1446 |
asm("1: ");
|
|
|
1447 |
asm("subs r2, r0, #10 "); // divide aVal by 10, r1:r0=quotient, r3:r2=remainder
|
|
|
1448 |
asm("sbc r3, r1, #0 ");
|
|
|
1449 |
asm("mov r6, r0, lsr #2 "); // NB: 0.8 rounded to 64 bits is:
|
|
|
1450 |
asm("orr r6, r6, r1, lsl #30 "); // 0.11001100110011001100110011001100110011001100110011001100110011
|
|
|
1451 |
asm("subs r0, r0, r6 ");
|
|
|
1452 |
asm("sbc r1, r1, r1, lsr #2 "); // quotient -= quotient >> 2 (0.11)
|
|
|
1453 |
asm("mov r6, r0, lsr #4 ");
|
|
|
1454 |
asm("orr r6, r6, r1, lsl #28 ");
|
|
|
1455 |
asm("adds r0, r0, r6 ");
|
|
|
1456 |
asm("adc r1, r1, r1, lsr #4 "); // quotient += quotient >> 4 (0.110011)
|
|
|
1457 |
asm("mov r6, r0, lsr #8 ");
|
|
|
1458 |
asm("orr r6, r6, r1, lsl #24 ");
|
|
|
1459 |
asm("adds r0, r0, r6 ");
|
|
|
1460 |
asm("adc r1, r1, r1, lsr #8 "); // quotient += quotient >> 8 (0.11001100110011)
|
|
|
1461 |
asm("mov r6, r0, lsr #16 ");
|
|
|
1462 |
asm("orr r6, r6, r1, lsl #16 ");
|
|
|
1463 |
asm("adds r0, r0, r6 ");
|
|
|
1464 |
asm("adc r1, r1, r1, lsr #16 "); // quotient += quotient >> 16 (0.110011001100110011001100110011)
|
|
|
1465 |
asm("adds r0, r0, r1 ");
|
|
|
1466 |
asm("adc r1, r1, #0 "); // quotient += quotient >> 32 (0.11001100110011001100110011001100110011001100110011001100110011)
|
|
|
1467 |
asm("mov r0, r0, lsr #3 ");
|
|
|
1468 |
asm("orr r0, r0, r1, lsl #29 ");
|
|
|
1469 |
asm("mov r1, r1, lsr #3 "); // quotient >>= 3 0.1 == (0.00011001100110011001100110011001100110011001100110011001100110011)
|
|
|
1470 |
asm("mov r7, r1, lsl #2 "); // use r7:r6 as a temp
|
|
|
1471 |
asm("orr r7, r7, r0, lsr #30 ");
|
|
|
1472 |
asm("mov r6, r0, lsl #2 "); // r7:r6 = quotient << 2 == 4 * |aVal/10|
|
|
|
1473 |
asm("adds r6, r6, r0 ");
|
|
|
1474 |
asm("adc r7, r7, r1 "); // r7:r6 += quotient == 5 * |aVal/10|
|
|
|
1475 |
asm("mov r7, r7, lsl #1 ");
|
|
|
1476 |
asm("orr r7, r7, r6, lsr #31 ");
|
|
|
1477 |
asm("mov r6, r6, lsl #1 "); // r7:r6 <<= 1 == 10 * |aVal/10|
|
|
|
1478 |
asm("subs r2, r2, r6 ");
|
|
|
1479 |
asm("sbcs r3, r3, r7 "); // r3:r2 = aVal - (10 * |aVal/10|) == remainder
|
|
|
1480 |
asm("bpl fix_quotient ");
|
|
|
1481 |
asm("adds r2, r2, #10 ");
|
|
|
1482 |
asm("adc r3, r3, #0 "); // fix remainder
|
|
|
1483 |
asm("b fix_end ");
|
|
|
1484 |
asm("fix_quotient: ");
|
|
|
1485 |
asm("adds r0, r0, #1 ");
|
|
|
1486 |
asm("adc r1, r1, #0 "); // increment quotient
|
|
|
1487 |
asm("fix_end: ");
|
|
|
1488 |
asm("add r2, r2, #0x30 "); // add '0' to remainder
|
|
|
1489 |
asm("tst r4, #0x100 "); // test aA bit 8
|
|
|
1490 |
asm("strneh r2, [r5, #-2]! "); // if aA bit 8 set, store 16 bits
|
|
|
1491 |
asm("streqb r2, [r5, #-1]! "); // else store 8 bits
|
|
|
1492 |
asm("teq r1, #0 ");
|
|
|
1493 |
asm("bne 1b "); // loop back if new aVal > 0xffffffffu
|
|
|
1494 |
asm("2: ");
|
|
|
1495 |
asm("mov r2, r4 "); // r2 = aA
|
|
|
1496 |
asm("ldr r1, [ip] "); // r1 = original aDest
|
|
|
1497 |
asm("mov r3, ip "); // r3 = &aDest
|
|
|
1498 |
asm("sub r6, r1, r5 "); // r6 = original aDest - r5
|
|
|
1499 |
asm("str r5, [r3] "); // aDest = r5
|
|
|
1500 |
asm("mov r1, #10 "); // r1 = radix
|
|
|
1501 |
asm("mov ip, r5 "); // ip = aDest
|
|
|
1502 |
asm("bl do_convert_dec ");
|
|
|
1503 |
asm("add r0, r0, r6 "); // r0 += r6
|
|
|
1504 |
__POPRET("r4-r7,");
|
|
|
1505 |
|
|
|
1506 |
#endif //__FIXED_POINT_64BIT_DIV10__
|
|
|
1507 |
|
|
|
1508 |
}
|
|
|
1509 |
|
|
|
1510 |
#endif //__DES_MACHINE_CODED__
|