diff -r 000000000000 -r a41df078684a kernel/eka/nkernsmp/arm/ncutils.cia --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/kernel/eka/nkernsmp/arm/ncutils.cia Mon Oct 19 15:55:17 2009 +0100 @@ -0,0 +1,1041 @@ +// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). +// All rights reserved. +// This component and the accompanying materials are made available +// under the terms of the License "Eclipse Public License v1.0" +// which accompanies this distribution, and is available +// at the URL "http://www.eclipse.org/legal/epl-v10.html". +// +// Initial Contributors: +// Nokia Corporation - initial contribution. +// +// Contributors: +// +// Description: +// e32\nkernsmp\arm\ncutils.cia +// +// + +#include +#include +#include + +extern TSpinLock BTraceLock; + +extern "C" { +extern TUint32 CrashStateOut; +extern SFullArmRegSet DefaultRegSet; +} + +//#define __DBG_MON_FAULT__ +//#define __RAM_LOADED_CODE__ +//#define __EARLY_DEBUG__ + +#ifdef _DEBUG +#define ASM_KILL_LINK(rp,rs) asm("mov "#rs", #0xdf ");\ + asm("orr "#rs", "#rs", "#rs", lsl #8 ");\ + asm("orr "#rs", "#rs", "#rs", lsl #16 ");\ + asm("str "#rs", ["#rp"] ");\ + asm("str "#rs", ["#rp", #4] "); +#else +#define ASM_KILL_LINK(rp,rs) +#endif + +#ifdef __PRI_LIST_MACHINE_CODED__ +/** Return the priority of the highest priority item present on a priority list. + + @return The highest priority present or -1 if the list is empty. + */ +EXPORT_C __NAKED__ TInt TPriListBase::HighestPriority() + { + asm("ldr r2, [r0, #4] "); // r2=iPresent MSW + asm("ldr r1, [r0, #0] "); // r1=iPresent LSW + CLZ(0,2); // r0=31-MSB(r2) + asm("subs r0, r0, #32 "); // r0=-1-MSB(r2), 0 if r2=0 + CLZcc(CC_EQ,0,1); // if r2=0, r0=31-MSB(r1) + asm("rsb r0, r0, #31 "); // r0=highest priority + __JUMP(,lr); + } + +/** Find the highest priority item present on a priority list. + If multiple items at the same priority are present, return the first to be + added in chronological order. + + @return a pointer to the item or NULL if the list is empty. + */ +EXPORT_C __NAKED__ TPriListLink* TPriListBase::First() + { + asm("ldr r2, [r0, #4] "); // r2=iPresent MSW + asm("ldr r1, [r0], #8 "); // r1=iPresent LSW, r0=&iQueue[0] + CLZ(3,2); // r3=31-MSB(r2) + asm("subs r3, r3, #32 "); // r3=-1-MSB(r2), 0 if r2=0 + CLZcc(CC_EQ,3,1); // if r2=0, r3=31-MSB(r1) + asm("rsbs r3, r3, #31 "); // r3=highest priority + asm("ldrpl r0, [r0, r3, lsl #2] "); // if r3>=0 list is nonempty, r0->first entry + asm("movmi r0, #0 "); // if r3<0 list empty, return NULL + __JUMP(,lr); + } + +/** Add an item to a priority list. + + @param aLink = a pointer to the item - must not be NULL + */ +EXPORT_C __NAKED__ void TPriListBase::Add(TPriListLink* /*aLink*/) + { + asm("ldrb r2, [r1, #8]" ); // r2=priority of aLink + asm("add ip, r0, #8 "); // ip=&iQueue[0] + asm("ldr r3, [ip, r2, lsl #2]! "); // r3->first entry at this priority + asm("cmp r3, #0 "); // is this first entry at this priority? + asm("bne pri_list_add_1 "); // branch if not + asm("str r1, [ip] "); // if queue originally empty, iQueue[pri]=aThread + asm("ldrb ip, [r0, r2, lsr #3]! "); // ip=relevant byte of present mask, r0->same + asm("and r2, r2, #7 "); + asm("mov r3, #1 "); + asm("str r1, [r1, #0] "); // aThread->next=aThread + asm("orr ip, ip, r3, lsl r2 "); // ip |= 1<<(pri&7) + asm("str r1, [r1, #4] "); // aThread->iPrev=aThread + asm("strb ip, [r0] "); // update relevant byte of present mask + __JUMP(,lr); + asm("pri_list_add_1: "); + asm("ldr ip, [r3, #4] "); // if nonempty, ip=last + asm("str r1, [r3, #4] "); // first->prev=aThread + asm("stmia r1, {r3,ip} "); // aThread->next=r3=first, aThread->prev=ip=last + asm("str r1, [ip, #0] "); // last->next=aThread + __JUMP(,lr); + } + + +/** Removes an item from a priority list. + + @param aLink A pointer to the item - this must not be NULL. + */ +EXPORT_C __NAKED__ void TPriListBase::Remove(TPriListLink* /*aLink*/) + { + asm("ldmia r1, {r2,r3} "); // r2=aLink->iNext, r3=aLink->iPrev + ASM_KILL_LINK(r1,r12); + asm("subs r12, r1, r2 "); // check if more threads at this priority, r12=0 if not + asm("bne 1f "); // branch if there are more at same priority + asm("ldrb r2, [r1, #%a0]" : : "i" _FOFF(NThread, iPriority)); // r2=thread priority + asm("add r1, r0, #%a0" : : "i" _FOFF(TPriListBase, iQueue)); // r1->iQueue[0] + asm("str r12, [r1, r2, lsl #2] "); // iQueue[priority]=NULL + asm("ldrb r1, [r0, r2, lsr #3] "); // r1=relevant byte in present mask + asm("and r3, r2, #7 "); // r3=priority & 7 + asm("mov r12, #1 "); + asm("bic r1, r1, r12, lsl r3 "); // clear bit in present mask + asm("strb r1, [r0, r2, lsr #3] "); // update relevant byte in present mask + __JUMP(,lr); + asm("1: "); // get here if there are other threads at same priority + asm("ldrb r12, [r1, #%a0]" : : "i" _FOFF(NThread, iPriority)); // r12=thread priority + asm("add r0, r0, #%a0" : : "i" _FOFF(TPriListBase, iQueue)); // r0=&iQueue[0] + asm("str r3, [r2, #4] "); // next->prev=prev + asm("ldr r12, [r0, r12, lsl #2]! "); // r12=iQueue[priority], r0=&iQueue[priority] + asm("str r2, [r3, #0] "); // and prev->next=next + asm("cmp r12, r1 "); // if aThread was first... + asm("streq r2, [r0, #0] "); // iQueue[priority]=aThread->next + __JUMP(,lr); // finished + } + + +/** Change the priority of an item on a priority list + + @param aLink = pointer to the item to act on - must not be NULL + @param aNewPriority = new priority for the item + */ +EXPORT_C __NAKED__ void TPriListBase::ChangePriority(TPriListLink* /*aLink*/, TInt /*aNewPriority*/) + { + asm("ldrb r3, [r1, #8] "); // r3=old priority + asm("stmfd sp!, {r4-r6,lr} "); + asm("cmp r3, r2 "); + asm("ldmeqfd sp!, {r4-r6,pc} "); // if old priority=new, finished + asm("ldmia r1, {r4,r12} "); // r4=next, r12=prev + asm("ldmia r0!, {r6,lr} "); // lr:r6=present mask, r0=&iQueue[0] + asm("subs r5, r4, r1 "); // check if aLink is only one at that priority, r5=0 if it is + asm("beq change_pri_1 "); // branch if it is + asm("ldr r5, [r0, r3, lsl #2] "); // r5=iQueue[old priority] + asm("str r4, [r12, #0] "); // prev->next=next + asm("str r12, [r4, #4] "); // next->prev=prev + asm("cmp r5, r1 "); // was aLink first? + asm("streq r4, [r0, r3, lsl #2] "); // if it was, iQueue[old priority]=aLink->next + asm("b change_pri_2 "); + asm("change_pri_1: "); + asm("str r5, [r0, r3, lsl #2] "); // if empty, set iQueue[old priority]=NULL + asm("mov r12, #0x80000000 "); + asm("rsbs r3, r3, #31 "); // r3=31-priority + asm("bicmi lr, lr, r12, ror r3 "); // if pri>31, clear bit is MS word + asm("bicpl r6, r6, r12, ror r3 "); // if pri<=31, clear bit in LS word + asm("change_pri_2: "); + asm("ldr r4, [r0, r2, lsl #2] "); // r4=iQueue[new priority] + asm("strb r2, [r1, #8] "); // store new priority + asm("cmp r4, #0 "); // new priority queue empty? + asm("bne change_pri_3 "); // branch if not + asm("str r1, [r0, r2, lsl #2] "); // if new priority queue was empty, iQueue[new p]=aLink + asm("mov r12, #0x80000000 "); + asm("str r1, [r1, #0] "); // aLink->next=aLink + asm("rsbs r2, r2, #31 "); // r2=31-priority + asm("str r1, [r1, #4] "); // aLink->prev=aLink + asm("orrmi lr, lr, r12, ror r2 "); // if pri>31, set bit is MS word + asm("orrpl r6, r6, r12, ror r2 "); // if pri<=31, set bit in LS word + asm("stmdb r0!, {r6,lr} "); // store present mask and restore r0 + asm("ldmfd sp!, {r4-r6,pc} "); + asm("change_pri_3: "); + asm("ldr r12, [r4, #4] "); // r12->last link at this priority + asm("str r1, [r4, #4] "); // first->prev=aLink + asm("str r1, [r12, #0] "); // old last->next=aLink + asm("stmia r1, {r4,r12} "); // aLink->next=r3=first, aLink->prev=r12=old last + asm("stmdb r0!, {r6,lr} "); // store present mask and restore r0 + asm("ldmfd sp!, {r4-r6,pc} "); + } +#endif + +__NAKED__ void initialiseState(TInt /*aCpu*/, TSubScheduler* /*aSS*/) + { + SET_RWNO_TID(,r1); + __ASM_CLI_MODE(MODE_ABT); + asm("str sp, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_AbtStackTop)); + asm("mvn r3, #0 "); + asm("str r3, [sp, #%a0]" : : "i" _FOFF(SFullArmRegSet, iExcCode)); + asm("str r3, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_IrqNestCount)); + __ASM_CLI_MODE(MODE_UND); + asm("str sp, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_UndStackTop)); + __ASM_CLI_MODE(MODE_FIQ); + asm("str sp, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_FiqStackTop)); + __ASM_CLI_MODE(MODE_IRQ); + asm("str sp, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_IrqStackTop)); + __ASM_CLI_MODE(MODE_SVC); + asm("ldr r2, __TheScheduler "); + asm("ldr r3, [r2, #%a0]" : : "i" _FOFF(TScheduler, i_ScuAddr)); + asm("str r3, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_ScuAddr)); + asm("ldr r3, [r2, #%a0]" : : "i" _FOFF(TScheduler, i_GicDistAddr)); + asm("str r3, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_GicDistAddr)); + asm("ldr r3, [r2, #%a0]" : : "i" _FOFF(TScheduler, i_GicCpuIfcAddr)); + asm("str r3, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_GicCpuIfcAddr)); + asm("ldr r3, [r2, #%a0]" : : "i" _FOFF(TScheduler, i_LocalTimerAddr)); + asm("str r3, [r1, #%a0]" : : "i" _FOFF(TSubScheduler, i_LocalTimerAddr)); + asm("mov r3, #0 "); + SET_RWRO_TID(,r3); + SET_RWRW_TID(,r3); + + __JUMP(,lr); + + asm("__TheScheduler: "); + asm(".word TheScheduler "); + } + +__NAKED__ TUint32 __mpid() + { + asm("mrc p15, 0, r0, c0, c0, 5 "); + __JUMP(,lr); + } + +/** @internalTechnology + + Called to indicate that the system has crashed and all CPUs should be + halted and should dump their registers. + +*/ +__NAKED__ void NKern::NotifyCrash(const TAny* /*a0*/, TInt /*a1*/) + { + asm("stmfd sp!, {r0-r1} "); // save parameters + GET_RWNO_TID(,r0); + asm("cmp r0, #0 "); + asm("ldreq r0, __SS0 "); + asm("ldr r0, [r0, #%a0]" : : "i" _FOFF(TSubScheduler,i_Regs)); + asm("cmp r0, #0 "); + asm("ldreq r0, __DefaultRegs "); + asm("ldr r1, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet, iExcCode)); + asm("cmp r1, #0 "); // context already saved? + asm("bge state_already_saved "); // skip if so + asm("mov r1, lr "); + asm("bl " CSM_ZN3Arm9SaveStateER14SFullArmRegSet ); + asm("str r1, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet, iN.iR15)); + asm("ldmia sp!, {r2-r3} "); // original R0,R1 + asm("stmia r0, {r2-r3} "); // save original R0,R1 + asm("add r1, r0, #%a0" : : "i" _FOFF(SFullArmRegSet, iExcCode)); + asm("mov r4, r0 "); // save pointer to i_Regs + asm("stmib r1, {r2-r3} "); // save a0, a1 in iCrashArgs + asm("mov r1, #13 "); // r1 = regnum + asm("mrs r2, cpsr "); // r2 = mode + asm("bl " CSM_ZN3Arm3RegER14SFullArmRegSetim ); // r0 = pointer to exception mode R13 + asm("str sp, [r0] "); // save correct original value for exception mode R13 + asm("b state_save_complete "); + + asm("state_already_saved: "); + asm("ldmia sp!, {r2-r3} "); // original R0,R1 + asm("add r1, r0, #%a0" : : "i" _FOFF(SFullArmRegSet, iExcCode)); + asm("ldr r4, [r1, #4]! "); + asm("cmp r4, #0 "); + asm("stmeqia r1, {r2-r3} "); // save a0, a1 in iCrashArgs, provided iCrashArgs not already set + asm("mov r4, r0 "); // save pointer to i_Regs + asm("state_save_complete: "); + + __ASM_CLI_MODE(MODE_FIQ); // mode_fiq, interrupts off + GET_RWNO_TID(,r0); + asm("ldr r1, __CrashState "); + asm("cmp r0, #0 "); + asm("moveq r2, #1 "); + asm("streq r2, [r1] "); + asm("beq skip_other_cores "); // If subscheduler not yet set, don't bother with other cores + asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(TSubScheduler, iCpuMask)); + asm("ldr r5, [r0, #%a0]" : : "i" _FOFF(TSubScheduler, i_GicCpuIfcAddr)); +// asm("ldr r4, [r0, #%a0]" : : "i" _FOFF(TSubScheduler,i_Regs)); + asm("bic sp, sp, #4 "); // align stack to multiple of 8 + + __DATA_MEMORY_BARRIER_Z__(r6); + asm("1: "); + LDREX(3,1); + asm("orr r5, r3, r2 "); + STREX(12,5,1); // set bit in CrashState for this CPU + asm("cmp r12, #0 "); + asm("bne 1b "); + __DATA_MEMORY_BARRIER__(r6); + asm("cmp r3, #0 "); // were we first to crash? + asm("beq first_to_crash "); // branch if so + + // we weren't first to crash, so wait here for a crash IPI + // disable all interrupts except for CRASH_IPI + GET_RWNO_TID(,r0); + asm("ldr r0, [r0, #%a0]" : : "i" _FOFF(TSubScheduler, i_GicCpuIfcAddr)); + asm("mov r1, #0 "); + asm("1: "); + asm("add r1, r1, #1 "); + asm("str r1, [r0, #%a0]" : : "i" _FOFF(GicCpuIfc, iPriMask)); + __DATA_SYNC_BARRIER__(r6); + asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(GicCpuIfc, iPriMask)); + asm("cmp r2, #0 "); + asm("beq 1b "); // loop until priority mask is nonzero + + asm("2: "); + __ASM_STI_MODE(MODE_ABT); + ARM_WFE; + asm("b 2b "); // loop until we get a CRASH_IPI + + // This CPU was first to crash + asm("first_to_crash: "); + asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(TSubScheduler, iScheduler)); + asm("ldr r7, __CrashStateOut "); + asm("ldr r3, [r2, #%a0]" : : "i" _FOFF(TScheduler, iActiveCpus1)); + asm("str r3, [r7] "); // mask of CPUs pending + asm("ldr r5, [r0, #%a0]" : : "i" _FOFF(TSubScheduler, i_GicDistAddr)); + asm("ldr r1, __CrashIPIWord "); + __DATA_SYNC_BARRIER_Z__(r6); + asm("str r1, [r5, #%a0]" : : "i" _FOFF(GicDistributor, iSoftIrq)); // send CRASH_IPI to all other CPUs + __DATA_SYNC_BARRIER__(r6); + + asm("skip_other_cores: "); + asm("mov r0, #0 "); + asm("mov r1, #0 "); + asm("mov r2, #0 "); + asm("bl NKCrashHandler "); // call NKCrashHandler(0,0,0) + + __DATA_SYNC_BARRIER__(r6); + GET_RWNO_TID(,r0); + asm("cmp r0, #0 "); + asm("beq skip_other_cores2 "); // If subscheduler not yet set, don't bother with other cores + asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(TSubScheduler, iCpuMask)); + asm("7: "); + LDREX(1,7); + asm("bic r1, r1, r2 "); + STREX(3,1,7); // atomic { CrashStateOut &= ~iCpuMask; } + asm("cmp r3, #0 "); + asm("bne 7b "); + asm("1: "); + asm("ldr r1, [r7] "); + asm("cmp r1, #0 "); // wait for all CPUs to acknowledge + asm("beq 2f "); + asm("adds r6, r6, #1 "); + asm("bne 1b "); // if not ACKed after 2^32 iterations give up waiting + asm("2: "); + __DATA_MEMORY_BARRIER_Z__(r0); + + asm("skip_other_cores2: "); + asm("mov r0, #1 "); + asm("ldr r1, [r4, #%a0] " : : "i" _FOFF(SFullArmRegSet,iN.iR0)); // original R0 = a0 parameter + asm("ldr r2, [r4, #%a0] " : : "i" _FOFF(SFullArmRegSet,iN.iR1)); // original R1 = a1 parameter + asm("bl NKCrashHandler "); // call NKCrashHandler(1,a0,a1) - shouldn't return + + // shouldn't get back here + __ASM_CRASH(); + + asm("__CrashState: "); + asm(".word %a0" : : "i" ((TInt)&CrashState)); + asm("__CrashStateOut: "); + asm(".word CrashStateOut "); + asm("__CrashIPIWord: "); + asm(".word %a0" : : "i" ( (TInt)GIC_IPI_OTHERS(CRASH_IPI_VECTOR) )); + asm("__SS0: "); + asm(".word %a0" : : "i" ((TInt)&TheSubSchedulers[0])); + asm("__DefaultRegs: "); + asm(".word %a0" : : "i" ((TInt)&DefaultRegSet)); + } + + +#ifdef __USE_BTRACE_LOCK__ +#define __ASM_ACQUIRE_BTRACE_LOCK(regs) \ + asm("stmfd sp!, " regs); \ + asm("ldr r0, __BTraceLock "); \ + asm("bl " CSM_ZN9TSpinLock11LockIrqSaveEv ); \ + asm("mov r4, r0 "); \ + asm("ldmfd sp!, " regs) + +#define __ASM_RELEASE_BTRACE_LOCK() \ + asm("stmfd sp!, {r0-r1} "); \ + asm("ldr r0, __BTraceLock "); \ + asm("mov r1, r4 "); \ + asm("bl " CSM_ZN9TSpinLock16UnlockIrqRestoreEi ); \ + asm("ldmfd sp!, {r0-r1} ") + +#else +#define __ASM_ACQUIRE_BTRACE_LOCK(regs) +#define __ASM_RELEASE_BTRACE_LOCK() +#endif + + +__NAKED__ EXPORT_C TBool BTrace::Out(TUint32 a0, TUint32 a1, TUint32 a2, TUint32 a3) + { + asm("stmdb sp!, {r2,r3,r4,lr}"); + __ASM_ACQUIRE_BTRACE_LOCK("{r0-r1}"); + asm("ldr r12, __BTraceData"); + asm("and r2, r0, #%a0" : : "i" ((TInt)(0xff<<(BTrace::ECategoryIndex*8)))); + asm("mov r3, r1"); // r3 = a1 (ready for call to handler) + asm("ldrb r2, [r12, r2, lsr #%a0]" : : "i" ((TInt)(BTrace::ECategoryIndex*8))); + asm("ldr r12, [r12, #%a0]" : : "i" _FOFF(SBTraceData,iHandler)); + asm("adr lr, 9f"); + asm("cmp r2, #0"); + asm("moveq r0, #0"); + __JUMP(ne, r12); + asm("9: "); + __ASM_RELEASE_BTRACE_LOCK(); + __POPRET("r2,r3,r4,"); + } + +__NAKED__ EXPORT_C TBool BTrace::OutN(TUint32 a0, TUint32 a1, TUint32 a2, const TAny* aData, TInt aDataSize) + { + asm("stmdb sp!, {r2,r3,r4,lr}"); + __ASM_ACQUIRE_BTRACE_LOCK("{r0-r3}"); + asm("ldr r12, __BTraceData"); + asm("and r2, r0, #%a0" : : "i" ((TInt)(0xff<<(BTrace::ECategoryIndex*8)))); + asm("ldr r14, [sp, #16]"); // r14 = aDataSize + asm("ldrb r2, [r12, r2, lsr #%a0]" : : "i" ((TInt)(BTrace::ECategoryIndex*8))); + asm("ldr r12, [r12, #%a0]" : : "i" _FOFF(SBTraceData,iHandler)); + asm("cmp r2, #0"); + asm("moveq r0, #0"); + asm("beq 0f "); + + asm("cmp r14, #%a0" : : "i" ((TInt)KMaxBTraceDataArray)); + asm("movhi r14, #%a0" : : "i" ((TInt)KMaxBTraceDataArray)); + asm("orrhi r0, r0, #%a0" : : "i" ((TInt)(BTrace::ERecordTruncated<<(BTrace::EFlagsIndex*8)))); + asm("add r0, r0, r14"); + asm("subs r14, r14, #1"); + asm("ldrhs r2, [r3]"); // get first word of aData is aDataSize!=0 + asm("mov r3, r1"); // r3 = a1 (ready for call to handler) + asm("cmp r14, #4"); + asm("strlo r2, [sp, #4]"); // replace aData with first word if aDataSize is 1-4 + + asm("mov lr, pc"); + __JUMP(, r12); + asm("0: "); + __ASM_RELEASE_BTRACE_LOCK(); + __POPRET("r2,r3,r4,"); + } + +__NAKED__ EXPORT_C TBool BTrace::OutX(TUint32 a0, TUint32 a1, TUint32 a2, TUint32 a3) + { + asm("stmdb sp!, {r2,r3,r4,lr}"); + __ASM_ACQUIRE_BTRACE_LOCK("{r0-r1}"); + asm("ldr r12, __BTraceData"); + asm("and r2, r0, #%a0" : : "i" ((TInt)(0xff<<(BTrace::ECategoryIndex*8)))); + asm("mov r3, r1"); // r3 = a1 (ready for call to handler) + asm("ldrb r2, [r12, r2, lsr #%a0]" : : "i" ((TInt)(BTrace::ECategoryIndex*8))); + asm("mrs r14, cpsr "); + asm("ldr r12, [r12, #%a0]" : : "i" _FOFF(SBTraceData,iHandler)); + asm("cmp r2, #0"); // check category filter + asm("moveq r0, #0"); + asm("beq 0f "); // if category disabled, exit now + __ASM_CLI(); + asm("and r2, r14, #0x0f "); + asm("cmp r2, #3 "); + asm("movhi r2, #2 "); // r2 = context ID = 1 for FIQ, 2 for IRQ/ABT/UND/SYS + asm("bne 1f "); + GET_RWNO_TID(,r1); + asm("movs r2, r1 "); // r2 = context ID = 0 for early boot, no threads + asm("beq 1f "); + asm("ldrb r2, [r1, #%a0]" : : "i" _FOFF(TSubScheduler,iInIDFC)); + asm("cmp r2, #0 "); + asm("ldreq r2, [r1, #%a0]" : : "i" _FOFF(TSubScheduler,iCurrentThread)); + asm("movne r2, #3 "); // r2 = context ID = 3 for IDFC = NThread pointer for thread + asm("1: "); + asm("msr cpsr, r14 "); + asm("mov lr, pc"); + __JUMP(, r12); + asm("0: "); + __ASM_RELEASE_BTRACE_LOCK(); + __POPRET("r2,r3,r4,"); + } + +__NAKED__ EXPORT_C TBool BTrace::OutNX(TUint32 a0, TUint32 a1, TUint32 a2, const TAny* aData, TInt aDataSize) + { + asm("stmdb sp!, {r2,r3,r4,lr}"); + __ASM_ACQUIRE_BTRACE_LOCK("{r0-r3}"); + asm("ldr r12, __BTraceData"); + asm("and r2, r0, #%a0" : : "i" ((TInt)(0xff<<(BTrace::ECategoryIndex*8)))); + asm("ldr r14, [sp, #16]"); // r14 = aDataSize + asm("ldrb r2, [r12, r2, lsr #%a0]" : : "i" ((TInt)(BTrace::ECategoryIndex*8))); + asm("ldr r12, [r12, #%a0]" : : "i" _FOFF(SBTraceData,iHandler)); + asm("cmp r2, #0"); // check category filter + asm("moveq r0, #0"); + asm("beq 0f "); // if category disabled, exit now + + asm("cmp r14, #%a0" : : "i" ((TInt)KMaxBTraceDataArray)); + asm("movhi r14, #%a0" : : "i" ((TInt)KMaxBTraceDataArray)); + asm("orrhi r0, r0, #%a0" : : "i" ((TInt)(BTrace::ERecordTruncated<<(BTrace::EFlagsIndex*8)))); + asm("add r0, r0, r14"); + asm("subs r14, r14, #1"); + asm("ldrhs r2, [r3]"); // get first word of aData is aDataSize!=0 + asm("mov r3, r1"); // r3 = a1 (ready for call to handler) + asm("cmp r14, #4"); + asm("strlo r2, [sp, #4]"); // replace aData with first word if aDataSize is 1-4 + + asm("mrs r14, cpsr "); + __ASM_CLI(); + asm("and r2, r14, #0x0f "); + asm("cmp r2, #3 "); + asm("movhi r2, #2 "); // r2 = context ID = 1 for FIQ, 2 for IRQ/ABT/UND/SYS + asm("bne 1f "); + GET_RWNO_TID(,r1); + asm("movs r2, r1 "); // r2 = context ID = 0 for early boot, no threads + asm("beq 1f "); + asm("ldrb r2, [r1, #%a0]" : : "i" _FOFF(TSubScheduler,iInIDFC)); + asm("cmp r2, #0 "); + asm("ldreq r2, [r1, #%a0]" : : "i" _FOFF(TSubScheduler,iCurrentThread)); + asm("movne r2, #3 "); // r2 = context ID = 3 for IDFC = NThread pointer for thread + asm("1: "); + asm("msr cpsr, r14 "); + + asm("mov lr, pc"); + __JUMP(, r12); + asm("0: "); + __ASM_RELEASE_BTRACE_LOCK(); + __POPRET("r2,r3,r4,"); + } + +__NAKED__ EXPORT_C TBool BTrace::OutBig(TUint32 a0, TUint32 a1, const TAny* aData, TInt aDataSize) + { + asm("stmdb sp!, {r4,lr}"); + asm("ldr r12, __BTraceData"); + asm("str lr, [sp, #-4]! "); // PC + asm("and r14, r0, #%a0" : : "i" ((TInt)(0xff<<(BTrace::ECategoryIndex*8)))); + asm("ldrb r14, [r12, r14, lsr #%a0]" : : "i" ((TInt)(BTrace::ECategoryIndex*8))); + asm("cmp r14, #0"); // check category filter + asm("addeq sp, sp, #4 "); + asm("moveq r0, #0 "); + asm("beq 0f "); // if category disabled, exit now + + asm("mrs r14, cpsr "); + __ASM_CLI(); + asm("and r12, r14, #0x0f "); + asm("cmp r12, #3 "); + asm("movhi r12, #2 "); // r12 = context ID = 1 for FIQ, 2 for IRQ/ABT/UND/SYS + asm("bne 1f "); + GET_RWNO_TID(,r12); + asm("cmp r12, #0 "); // r2 = context ID = 0 for early boot, no threads + asm("beq 1f "); + asm("ldrb r12, [r12, #%a0]" : : "i" _FOFF(TSubScheduler,iInIDFC)); + asm("cmp r12, #0 "); + GET_RWNO_TID(eq,r12); + asm("ldreq r12, [r12, #%a0]" : : "i" _FOFF(TSubScheduler,iCurrentThread)); + asm("movne r12, #3 "); // r12 = context ID = 3 for IDFC = NThread pointer for thread + asm("1: "); + asm("msr cpsr, r14 "); + asm("str r12, [sp, #-4]! "); // context ID + asm("bl " CSM_ZN6BTrace8DoOutBigEmmPKvimm); + asm("add sp, sp, #8"); + asm("0: "); + __POPRET("r4,"); + + asm("__BTraceLock: "); + asm(".word %a0" : : "i" ((TInt)&BTraceLock)); + asm("__BTraceData: "); + asm(".word BTraceData "); + } + + +__NAKED__ EXPORT_C TBool BTrace::OutFiltered(TUint32 a0, TUint32 a1, TUint32 a2, TUint32 a3) + { + // fall through to OutFilteredX... + } + +__NAKED__ EXPORT_C TBool BTrace::OutFilteredX(TUint32 a0, TUint32 a1, TUint32 a2, TUint32 a3) + { + asm("stmdb sp!, {r2,r3,r4,lr}"); + asm("ldr r12, __BTraceData"); + asm("and r2, r0, #%a0" : : "i" ((TInt)(0xff<<(BTrace::ECategoryIndex*8)))); + asm("mov r3, r1"); // r3 = a1 (ready for call to handler) + asm("ldrb r2, [r12, r2, lsr #%a0]" : : "i" ((TInt)(BTrace::ECategoryIndex*8))); + asm("cmp r2, #0"); + asm("moveq r0, #0"); + asm("beq 9f "); + + // r0=header, r1=a1=secondary filter UID, r2=unused, r3=a1, r12->SBTraceData + // if trace enabled return r0,r1,r3 unmodified, r2=context value r12->handler, Z=0 + // if trace disabled return r0=0 Z=1 + asm("bl btrace_check_filter2 "); + asm("beq 9f "); + __ASM_ACQUIRE_BTRACE_LOCK("{r0,r2,r3,r12}"); + asm("adr lr, 1f "); + __JUMP(, r12); + asm("1: "); + __ASM_RELEASE_BTRACE_LOCK(); + asm("9: "); + __POPRET("r2,r3,r4,"); + + asm("btrace_check_filter2: "); + asm("stmfd sp!, {r0,r1,r3,r4,r12,lr} "); + asm("mov r0, r12 "); + asm("bl CheckFilter2__11SBTraceDataUl "); + asm("cmp r0, #0 "); + asm("beq 0f "); + asm("mrs r14, cpsr "); + __ASM_CLI(); + asm("and r2, r14, #0x0f "); + asm("cmp r2, #3 "); + asm("movhi r2, #2 "); // r2 = context ID = 1 for FIQ, 2 for IRQ/ABT/UND/SYS + asm("bne 1f "); + GET_RWNO_TID(,r4); + asm("movs r2, r4 "); // r2 = context ID = 0 for early boot, no threads + asm("beq 1f "); + asm("ldrb r2, [r4, #%a0]" : : "i" _FOFF(TSubScheduler,iInIDFC)); + asm("cmp r2, #0 "); + asm("ldreq r2, [r4, #%a0]" : : "i" _FOFF(TSubScheduler,iCurrentThread)); + asm("movne r2, #3 "); // r2 = context ID = 3 for IDFC = NThread pointer for thread + asm("1: "); + asm("msr cpsr, r14 "); + asm("0: "); + asm("ldmfd sp!, {r0,r1,r3,r4,r12,lr} "); + asm("moveq r0, #0 "); + asm("ldrne r12, [r12, #%a0]" : : "i" _FOFF(SBTraceData,iHandler)); + __JUMP(,lr); + } + +__NAKED__ EXPORT_C TBool BTrace::OutFilteredN(TUint32 a0, TUint32 a1, TUint32 a2, const TAny* aData, TInt aDataSize) + { + // fall through to OutFilteredNX... + } + +__NAKED__ EXPORT_C TBool BTrace::OutFilteredNX(TUint32 a0, TUint32 a1, TUint32 a2, const TAny* aData, TInt aDataSize) + { + asm("stmdb sp!, {r2,r3,r4,lr}"); + asm("ldr r12, __BTraceData"); + asm("and r2, r0, #%a0" : : "i" ((TInt)(0xff<<(BTrace::ECategoryIndex*8)))); + asm("ldrb r2, [r12, r2, lsr #%a0]" : : "i" ((TInt)(BTrace::ECategoryIndex*8))); + asm("cmp r2, #0"); + asm("moveq r0, #0"); + asm("beq 9f "); + + // r0=header, r1=a1=secondary filter UID, r2=unused, r3=aData, r12->SBTraceData + // if trace enabled return r0,r1,r3 unmodified, r2=context value r12->handler, Z=0 + // if trace disabled return r0=0 Z=1 + asm("bl btrace_check_filter2 "); + asm("beq 9f "); + + __ASM_ACQUIRE_BTRACE_LOCK("{r0-r3,r11,r12}"); + asm("ldr r14, [sp, #16] "); // r14 = aDataSize + asm("cmp r14, #%a0" : : "i" ((TInt)KMaxBTraceDataArray)); + asm("movhi r14, #%a0" : : "i" ((TInt)KMaxBTraceDataArray)); + asm("orrhi r0, r0, #%a0" : : "i" ((TInt)(BTrace::ERecordTruncated<<(BTrace::EFlagsIndex*8)))); + asm("add r0, r0, r14 "); + asm("subs r14, r14, #1 "); + asm("ldrhs r3, [r3] "); // get first word of aData if aDataSize!=0 + asm("cmp r14, #4 "); + asm("strlo r3, [sp, #4] "); // replace aData with first word if aDataSize is 1-4 + asm("mov r3, r1 "); // r3 = a1 (ready for call to handler) + asm("adr lr, 1f "); + __JUMP(, r12); + asm("1: "); + __ASM_RELEASE_BTRACE_LOCK(); + asm("9: "); + __POPRET("r2,r3,r4,"); + } + +__NAKED__ EXPORT_C TBool BTrace::OutFilteredBig(TUint32 a0, TUint32 a1, const TAny* aData, TInt aDataSize) + { + asm("stmdb sp!, {r4,lr} "); + asm("ldr r12, __BTraceData "); + asm("stmfd sp!, {r2,lr} "); // save aData, PC + asm("and r14, r0, #%a0" : : "i" ((TInt)(0xff<<(BTrace::ECategoryIndex*8)))); + asm("ldrb r14, [r12, r14, lsr #%a0]" : : "i" ((TInt)(BTrace::ECategoryIndex*8))); + asm("cmp r14, #0 "); // check category filter + asm("blne btrace_check_filter2 "); // if enabled, check secondary filter + asm("addeq sp, sp, #8 "); + asm("moveq r0, #0 "); + asm("beq 9f "); // if category or secondary filter disabled, exit now + asm("mov r12, r2 "); + asm("ldr r2, [sp, #0] "); // restore aData into r2 + asm("str r12, [sp, #0] "); // Context ID + asm("bl " CSM_ZN6BTrace8DoOutBigEmmPKvimm); + asm("add sp, sp, #8 "); + asm("9: "); + __POPRET("r4,"); + } + + +/******************************************************************************/ + +/** Save all the ARM registers + +@internalTechnology +*/ +__NAKED__ void Arm::SaveState(SFullArmRegSet&) + { + asm("stmia r0, {r0-r14}^ "); // save R0-R7, R8_usr-R14_usr + asm("str lr, [r0, #60]! "); // save R15 + asm("mrs r1, cpsr "); + asm("str r1, [r0, #4]! "); // save CPSR + asm("bic r2, r1, #0x1f "); + asm("orr r2, r2, #0xd3 "); // mode_svc, all interrupts off + asm("msr cpsr, r2 "); + asm("stmib r0!, {r13,r14} "); // save R13_svc, R14_svc + asm("mrs r3, spsr "); + asm("str r3, [r0, #4]! "); // save SPSR_svc + asm("bic r2, r1, #0x1f "); + asm("orr r2, r2, #0xd7 "); // mode_abt, all interrupts off + asm("msr cpsr, r2 "); + asm("stmib r0!, {r13,r14} "); // save R13_abt, R14_abt + asm("mrs r3, spsr "); + asm("str r3, [r0, #4]! "); // save SPSR_abt + asm("bic r2, r1, #0x1f "); + asm("orr r2, r2, #0xdb "); // mode_und, all interrupts off + asm("msr cpsr, r2 "); + asm("stmib r0!, {r13,r14} "); // save R13_und, R14_und + asm("mrs r3, spsr "); + asm("str r3, [r0, #4]! "); // save SPSR_und + asm("bic r2, r1, #0x1f "); + asm("orr r2, r2, #0xd2 "); // mode_irq, all interrupts off + asm("msr cpsr, r2 "); + asm("stmib r0!, {r13,r14} "); // save R13_irq, R14_irq + asm("mrs r3, spsr "); + asm("str r3, [r0, #4]! "); // save SPSR_irq + asm("bic r2, r1, #0x1f "); + asm("orr r2, r2, #0xd1 "); // mode_fiq, all interrupts off + asm("msr cpsr, r2 "); + asm("stmib r0!, {r8-r14} "); // save R8_fiq ... R14_fiq + asm("mrs r3, spsr "); + asm("str r3, [r0, #4]! "); // save SPSR_fiq + asm("bic r2, r1, #0x1f "); + asm("orr r2, r2, #0xd3 "); // mode_svc, all interrupts off + asm("msr cpsr, r2 "); + + asm("mov r4, #0 "); + asm("mov r5, #0 "); + asm("mov r6, #0 "); + asm("mov r7, #0 "); + asm("mov r8, #0 "); + asm("mov r9, #0 "); + asm("mov r10, #0 "); + asm("mov r11, #0 "); + + // monitor mode - skip for now + asm("mov r3, #0 "); + asm("stmib r0!, {r4-r6} "); // R13_mon, R14_mon, SPSR_mon + + // zero spare words + asm("mov r3, #0 "); + asm("stmib r0!, {r4-r11} "); + asm("add r0, r0, #4 "); // r0 = &a.iA + +#ifdef __CPU_ARMV7 + asm("mrc p14, 6, r3, c1, c0, 0 "); +#else + asm("mov r3, #0 "); +#endif + asm("str r3, [r0], #4 "); // TEEHBR +#ifdef __CPU_HAS_COPROCESSOR_ACCESS_REG + GET_CAR(,r3); +#else + asm("mov r3, #0 "); +#endif + asm("str r3, [r0], #4 "); // CPACR + + // skip SCR, SDER, NSACR, PMCR, MVBAR for now + asm("mov r3, #0 "); + asm("stmia r0!, {r4-r8} "); // SCR, SDER, NSACR, PMCR, MVBAR + + // zero spare words + asm("mov r3, #0 "); + asm("stmia r0!, {r3-r11} "); // r0 = &a.iB[0] + + // just fill in iB[0] +#ifdef __CPU_HAS_MMU + asm("mrc p15, 0, r3, c1, c0, 0 "); + asm("str r3, [r0], #4 "); // SCTLR +#ifdef __CPU_HAS_ACTLR + asm("mrc p15, 0, r3, c1, c0, 1 "); +#else + asm("mov r3, #0 "); +#endif + asm("str r3, [r0], #4 "); // ACTLR + asm("mrc p15, 0, r3, c2, c0, 0 "); + asm("str r3, [r0], #4 "); // TTBR0 +#ifdef __CPU_HAS_TTBR1 + asm("mrc p15, 0, r2, c2, c0, 1 "); + asm("mrc p15, 0, r3, c2, c0, 2 "); +#else + asm("mov r2, #0 "); + asm("mov r3, #0 "); +#endif + asm("stmia r0!, {r2,r3} "); // TTBR1, TTBCR + asm("mrc p15, 0, r3, c3, c0, 0 "); + asm("str r3, [r0], #4 "); // DACR +#ifdef __CPU_MEMORY_TYPE_REMAPPING + asm("mrc p15, 0, r2, c10, c2, 0 "); + asm("mrc p15, 0, r3, c10, c2, 1 "); +#else + asm("mov r2, #0 "); + asm("mov r3, #0 "); +#endif + asm("stmia r0!, {r2,r3} "); // PRRR, NMRR +#ifdef __CPU_ARMV7 + asm("mrc p15, 0, r3, c12, c0, 0 "); +#else + asm("mov r3, #0 "); +#endif + asm("str r3, [r0], #4 "); // VBAR +#if defined(__CPU_SA1) || defined(__CPU_ARM920T) || defined(__CPU_ARM925T) || defined(__CPU_ARMV5T) || defined(__CPU_ARMV6) || defined(__CPU_ARMV7) + asm("mrc p15, 0, r3, c13, c0, 0 "); +#else + asm("mov r3, #0 "); +#endif + asm("str r3, [r0], #4 "); // FCSEIDR +#if defined(__CPU_ARMV6) || defined(__CPU_ARMV7) + asm("mrc p15, 0, r3, c13, c0, 1 "); +#else + asm("mov r3, #0 "); +#endif + asm("str r3, [r0], #4 "); // CONTEXTIDR +#ifdef __CPU_HAS_CP15_THREAD_ID_REG + GET_RWRW_TID(,r2); + GET_RWRO_TID(,r3); + GET_RWNO_TID(,r12); +#else + asm("mov r2, #0 "); + asm("mov r3, #0 "); + asm("mov r12, #0 "); +#endif + asm("stmia r0!, {r2,r3,r12} "); // RWRWTID, RWROTID, RWNOTID + asm("mrc p15, 0, r2, c5, c0, 0 "); // DFSR +#ifdef __CPU_ARM_HAS_SPLIT_FSR + asm("mrc p15, 0, r3, c5, c0, 1 "); // IFSR +#else + asm("mov r3, #0 "); +#endif + asm("stmia r0!, {r2,r3} "); // DFSR, IFSR +#ifdef __CPU_ARMV7 + asm("mrc p15, 0, r2, c5, c1, 0 "); // ADFSR + asm("mrc p15, 0, r3, c5, c1, 1 "); // AIFSR +#else + asm("mov r2, #0 "); + asm("mov r3, #0 "); +#endif + asm("stmia r0!, {r2,r3} "); // ADFSR, AIFSR + asm("mrc p15, 0, r2, c6, c0, 0 "); // DFAR +#ifdef __CPU_ARM_HAS_CP15_IFAR + asm("mrc p15, 0, r3, c6, c0, 2 "); // IFAR +#else + asm("mov r3, #0 "); +#endif + asm("stmia r0!, {r2,r3} "); // DFAR, IFAR + + // zero spare words + asm("stmia r0!, {r4-r7} "); + asm("stmia r0!, {r4-r11} "); +#else // __CPU_HAS_MMU + asm("stmia r0!, {r4-r11} "); // no MMU so zero fill + asm("stmia r0!, {r4-r11} "); // no MMU so zero fill + asm("stmia r0!, {r4-r11} "); // no MMU so zero fill + asm("stmia r0!, {r4-r11} "); // no MMU so zero fill +#endif // __CPU_HAS_MMU + + // zero iB[1] + asm("stmia r0!, {r4-r11} "); + asm("stmia r0!, {r4-r11} "); + asm("stmia r0!, {r4-r11} "); + asm("stmia r0!, {r4-r11} "); // r0 = &a.iMore[0] + asm("add r1, r0, #62*8 "); // r1 = &a.iExcCode + + // Save VFP state + // Save order: + // FPEXC FPSCR + // VFPv2 ONLY: FPINST FPINST2 + // D0-D3 D4-D7 D8-D11 D12-D15 + // VFPv3 ONLY: D16-D19 D20-D23 D24-D27 D28-D31 +#ifdef __CPU_HAS_VFP + GET_CAR(,r2); + asm("bic r2, r2, #0x00f00000 "); +#ifdef __VFP_V3 + asm("bic r2, r2, #0xc0000000 "); // mask off ASEDIS, D32DIS +#endif + asm("orr r2, r2, #0x00500000 "); // enable privileged access to CP10, CP11 + SET_CAR(,r2); + VFP_FMRX(,2,VFP_XREG_FPEXC); // r2=FPEXC + asm("orr r3, r2, #%a0" : : "i" ((TInt)VFP_FPEXC_EN)); + VFP_FMXR(,VFP_XREG_FPEXC,3); // enable VFP + __DATA_SYNC_BARRIER__(r4); + __INST_SYNC_BARRIER__(r4); + VFP_FMRX(,3,VFP_XREG_FPSCR); // r3=FPSCR + asm("stmia r0!, {r2,r3} "); // +#ifdef __VFP_V3 + VFP_FSTMIADW(CC_AL,0,0,16); // save D0 - D15 + VFP_FMRX(,3,VFP_XREG_MVFR0); + asm("tst r3, #%a0" : : "i" ((TInt)VFP_MVFR0_ASIMD32)); // check to see if all 32 Advanced SIMD registers are present + VFP_FSTMIADW(CC_NE,0,16,16); // if so then save D15 - D31 (don't need to check CPACR.D32DIS as it is cleared above) +#else + VFP_FMRX(,2,VFP_XREG_FPINST); + VFP_FMRX(,3,VFP_XREG_FPINST2); + asm("stmia r0!, {r2,r3} "); // FPINST, FPINST2 + VFP_FSTMIADW(CC_AL,0,0,16); // save D0 - D15 +#endif +#endif // __CPU_HAS_VFP + asm("1: "); + asm("cmp r0, r1 "); + asm("strlo r4, [r0], #4 "); // clear up to end of iMore[61] + asm("blo 1b "); + asm("mov r1, #%a0" : : "i" ((TInt)KMaxTInt)); + asm("stmia r0!, {r1,r5-r7} "); // iExcCode=KMaxTInt, iCrashArgs[0...2]=0 + asm("sub r0, r0, #1024 "); // r0 = &a +#ifdef __CPU_HAS_VFP + asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iMore[0])); + VFP_FMXR(,VFP_XREG_FPEXC,2); // restore FPEXC + __DATA_SYNC_BARRIER__(r4); + __INST_SYNC_BARRIER__(r4); + asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iA.iCPACR)); + SET_CAR(,r2); // restore CPACR +#endif + asm("ldr r1, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iFlags)); + asm("orr r1, r1, #0xC0 "); // interrupts off + asm("msr cpsr, r1 "); // restore CPSR with interrupts off + asm("ldmia r0, {r0-r11} "); // restore R4-R11 + __JUMP(,lr); + } + + +/** Update the saved ARM registers with information from an exception + +@internalTechnology +*/ +__NAKED__ void Arm::UpdateState(SFullArmRegSet&, TArmExcInfo&) + { + asm("ldr r2, [r1, #%a0]" : : "i" _FOFF(TArmExcInfo, iExcCode)); + asm("cmp r2, #%a0 " : : "i" ((TInt)EArmExceptionPrefetchAbort)); + asm("ldmia r1!, {r2,r3,r12} "); + asm("streq r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iB[0].iIFAR)); + asm("strne r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iB[0].iDFAR)); + asm("streq r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iB[0].iIFSR)); + asm("strne r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iB[0].iDFSR)); + asm("str r12, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iSpsrSvc)); + asm("add r1, r1, #4 "); + asm("ldmia r1!, {r2,r3,r12} "); + asm("str r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR13Svc)); + asm("str r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR14Svc)); + asm("str r12, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR0)); + asm("ldmia r1!, {r2,r3,r12} "); + asm("str r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR1)); + asm("str r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR2)); + asm("str r12, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR3)); + asm("ldmia r1!, {r2,r3,r12} "); + asm("str r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR4)); + asm("str r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR5)); + asm("str r12, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR6)); + asm("ldmia r1!, {r2,r3,r12} "); + asm("str r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR7)); + asm("str r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR8)); + asm("str r12, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR9)); + asm("ldmia r1!, {r2,r3,r12} "); + asm("str r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR10)); + asm("str r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR11)); + asm("str r12, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR12)); + asm("ldmia r1!, {r2,r3,r12} "); + asm("str r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR13)); + asm("str r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR14)); + asm("str r12, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iExcCode)); + asm("ldmia r1!, {r2,r3} "); + asm("str r2, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iR15)); + asm("str r3, [r0, #%a0]" : : "i" _FOFF(SFullArmRegSet,iN.iFlags)); + __JUMP(,lr); + } + + +/** Get a pointer to a stored integer register, accounting for registers which + are banked across modes. + +@param a Pointer to saved register block +@param aRegNum Number of register required, 0-15 or -1 (indicates SPSR) +@param aMode Bottom 5 bits indicate which processor mode + Other bits of aMode are ignored +@return Pointer to the required saved register value + +@internalTechnology +*/ +__NAKED__ TArmReg* Arm::Reg(SFullArmRegSet& /*a*/, TInt /*aRegNum*/, TArmReg /*aMode*/) + { + asm("cmp r1, #8 "); // register number < 8 ? + asm("addlo r0, r0, r1, lsl #2 "); // register R0-R7 are not banked + asm("blo 0f "); + asm("cmp r1, #15 "); // register number = 15 ? + asm("addeq r0, r0, r1, lsl #2 "); // register R15 not banked + asm("movgt r0, #0 "); // no registers > 15 + asm("bge 0f "); + asm("cmn r1, #1 "); + asm("movlt r0, #0 "); // no registers < -1 + asm("blt 0f "); + asm("and r12, r2, #0x1F "); + asm("cmp r12, #0x11 "); // mode_fiq? + asm("beq 1f "); // skip if it is + asm("cmp r1, #13 "); + asm("addlo r0, r0, r1, lsl #2 "); // register R8-R12 are only banked in mode_fiq + asm("blo 0f "); + asm("cmp r12, #0x10 "); // mode_usr ? + asm("cmpne r12, #0x1F "); // if not, mode_sys ? + asm("bne 2f "); // skip if neither + asm("cmp r1, #16 "); + asm("addlo r0, r0, r1, lsl #2 "); // handle R13_usr, R14_usr + asm("movhs r0, #0 "); // no SPSR in mode_usr or mode_sys + asm("blo 0f "); + asm("1: "); // mode_fiq, regnum = 8-12 + asm("2: "); // exception mode, regnum not 0-12 or 15 + asm("cmn r1, #1 "); // regnum = -1 ? + asm("moveq r1, #15 "); // if so, change to 15 + asm("sub r1, r1, #13 "); + asm("add r0, r0, r1, lsl #2 "); // add 0 for R13, 4 for R14, 8 for SPSR + asm("cmp r12, #0x16 "); + asm("addeq r0, r0, #12 "); // if mon, add offset from R13Fiq to R13Mon + asm("cmpne r12, #0x11 "); + asm("addeq r0, r0, #32 "); // if valid but not svc/abt/und/irq, add offset from R13Irq to R13Fiq + asm("cmpne r12, #0x12 "); + asm("addeq r0, r0, #12 "); // if valid but not svc/abt/und, add offset from R13Und to R13Irq + asm("cmpne r12, #0x1b "); + asm("addeq r0, r0, #12 "); // if valid but not svc/abt, add offset from R13Abt to R13Und + asm("cmpne r12, #0x17 "); + asm("addeq r0, r0, #12 "); // if valid but not svc, add offset from R13Svc to R13Abt + asm("cmpne r12, #0x13 "); + asm("addeq r0, r0, #%a0" : : "i" _FOFF(SFullArmRegSet, iN.iR13Svc)); // if valid mode add offset to R13Svc + asm("movne r0, #0 "); + asm("0: "); + __JUMP(,lr); + } + + +/** Restore all the ARM registers + +@internalTechnology +*/ +__NAKED__ void Arm::RestoreState(SFullArmRegSet&) + { + } + +__NAKED__ EXPORT_C TBool BTrace::OutFilteredPcFormatBig(TUint32 a0, TUint32 aModuleUid, TUint32 aPc, TUint16 aFormatId, const TAny* aData, TInt aDataSize) + { + asm("mov r0, #0"); //Kernel side not implemented yet + } + + + + +