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supportppc.c
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// Copyright (c) 2019, 2020 Dennis van der Boon
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#pragma pack(push,2)
#include <exec/exec.h>
#include <powerpc/tasksPPC.h>
#include <powerpc/powerpc.h>
#include <exec/memory.h>
#include "constants.h"
#include "libstructs.h"
#include "Internalsppc.h"
#pragma pack(pop)
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID InsertOnPri(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct List* list, __reg("r5") struct TaskPPC* myTask)
{
//myEnqueuePPC(PowerPCBase, list, (struct Node*)myTask);
//return;
LONG realPri = myTask->tp_Priority + myTask->tp_Prioffset;
LONG defaultPri = PowerPCBase->pp_LowActivityPri + PowerPCBase->pp_LowActivityPriOffset;
if (realPri >= defaultPri)
{
realPri = defaultPri;
myTask->tp_Prioffset = defaultPri - myTask->tp_Priority;
}
struct Node* nextNode;
struct Node* myNode = list->lh_Head;
while (nextNode = myNode->ln_Succ)
{
struct TaskPPC* chkTask = (struct TaskPPC*)myNode;
if (chkTask->tp_Flags & TASKPPCF_ATOMIC)
{
myNode = nextNode;
break;
}
LONG cmpPri = chkTask->tp_Priority + chkTask->tp_Prioffset;
if (realPri > cmpPri)
{
break;
}
myNode = nextNode;
}
struct Node* pred = myNode->ln_Pred;
myNode->ln_Pred = (struct Node*)myTask;
myTask->tp_Task.tc_Node.ln_Succ = myNode;
myTask->tp_Task.tc_Node.ln_Pred = pred;
pred->ln_Succ = (struct Node*)myTask;
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION APTR AllocVec68K(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") ULONG size, __reg("r5") ULONG flags)
{
APTR memBlock = NULL;
if (size)
{
flags = (flags & ~MEMF_CHIP) | MEMF_PPC;
memBlock = (APTR)myRun68KLowLevel(PowerPCBase, (ULONG)PowerPCBase, _LVOAllocVec32, 0, 0, size, flags);
if (memBlock)
{
mySetCache(PowerPCBase, CACHE_DCACHEINV, memBlock, size); //no longer working...have to check
}
}
return memBlock;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID FreeVec68K(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") APTR memBlock)
{
myRun68KLowLevel(PowerPCBase, (ULONG)PowerPCBase, _LVOFreeVec32, 0, (ULONG)memBlock, 0, 0);
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID ForbidPPC(__reg("r3") struct PrivatePPCBase* PowerPCBase)
{
PowerPCBase->pp_FlagForbid = 1;
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID PermitPPC(__reg("r3") struct PrivatePPCBase* PowerPCBase)
{
PowerPCBase->pp_FlagForbid = 0;
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION struct MsgFrame* CreateMsgFramePPC(__reg("r3") struct PrivatePPCBase* PowerPCBase)
{
struct SysCall sc;
sc.sc_Function = SC_CREATEMSG;
ULONG msgFrame = SystemCall(&sc);
//#if 0
if (msgFrame)
{
ULONG clearFrame = msgFrame;
for (int i=0; i<48; i++)
{
*((ULONG*)(clearFrame)) = 0;
clearFrame += 4;
}
}
//#endif
return (struct MsgFrame*)msgFrame;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION struct MsgFrame* GetMsgFramePPC(__reg("r3") struct PrivatePPCBase* PowerPCBase)
{
struct SysCall sc;
sc.sc_Function = SC_GETMSG;
ULONG msgFrame = SystemCall(&sc);
return (struct MsgFrame*)msgFrame;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID SendMsgFramePPC(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct MsgFrame* msgFrame)
{
struct SysCall sc;
sc.sc_Function = SC_SENDMSG;
sc.sc_Arg[0] = (ULONG)msgFrame;
SystemCall(&sc);
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID FreeMsgFramePPC(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct MsgFrame* msgFrame)
{
struct SysCall sc;
sc.sc_Function = SC_FREEMSG;
sc.sc_Arg[0] = (ULONG)msgFrame;
SystemCall(&sc);
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION LONG StricmpPPC(__reg("r3") STRPTR string1, __reg("r4") STRPTR string2)
{
LONG result = 0;
ULONG offset = 0;
UBYTE s1,s2;
do
{
s1 = string1[offset];
s2 = string2[offset];
if ((0x40 < s1) && (s1< 0x5b))
{
s1 |= 0x20;
}
else if (s1 > 0x5a)
{
if ((0xc0 < s1) && (s1 < 0xe0))
{
s1 |= 0x20;
}
}
if ((0x40 < s2) && (s2 < 0x5b))
{
s2 |= 0x20;
}
else if (s2 > 0x5a)
{
if ((0xc0 < s2) && (s2 < 0xe0))
{
s2 |= 0x20;
}
}
if (s1 != s2)
{
if (s1 < s2)
{
result = -1;
}
else
{
result = 1;
}
break;
}
offset ++;
} while (s1);
return result;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION ULONG GetLen(__reg("r3") STRPTR string)
{
ULONG offset = 0;
while (string[offset])
{
offset++;
}
return offset;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION STRPTR CopyStr(__reg("r3") APTR source, __reg("r4") APTR dest)
{
ULONG offset = -1;
UBYTE* mySource = (UBYTE*)source;
UBYTE* myDest = (UBYTE*)dest;
do
{
offset ++;
myDest[offset] = mySource[offset];
} while (mySource[offset]);
offset ++;
return &myDest[offset];
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID CauseDECInterrupt(__reg("r3") struct PrivatePPCBase* PowerPCBase)
{
ULONG key;
if (!(PowerPCBase->pp_ExceptionMode))
{
key = mySuper(PowerPCBase);
PowerPCBase->pp_ExceptionMode = -1;
setDEC(30);
myUser(PowerPCBase, key);
while (PowerPCBase->pp_ExceptionMode);
}
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION ULONG CheckExcSignal(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct TaskPPC* myTask, __reg("r5") ULONG signal)
{
ULONG sigmask, test;
while (!(LockMutexPPC((volatile ULONG)&PowerPCBase->pp_Mutex)));
sigmask = (myTask->tp_Task.tc_SigRecvd | signal) & myTask->tp_Task.tc_SigExcept;
if (!(sigmask))
{
FreeMutexPPC((ULONG)&PowerPCBase->pp_Mutex);
return signal;
}
myTask->tp_Task.tc_SigRecvd |= sigmask;
signal = signal & ~sigmask;
PowerPCBase->pp_TaskExcept = myTask;
FreeMutexPPC((ULONG)&PowerPCBase->pp_Mutex);
CauseDECInterrupt(PowerPCBase);
while (test = (volatile ULONG)PowerPCBase->pp_TaskExcept);
return signal;
}
/********************************************************************************************
*
* APTR = AllocatePPC(struct Library*, struct MemHeader*, ULONG byteSize)
*
*********************************************************************************************/
PPCFUNCTION APTR AllocatePPC(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct MemHeader* memHeader, __reg("r5") ULONG byteSize)
{
struct DebugArgs args;
args.db_Function = 66 | (2<<8) | (1<<16) | (3<<17);
args.db_Arg[0] = (ULONG)memHeader;
args.db_Arg[1] = byteSize;
printDebug(PowerPCBase, (struct DebugArgs*)&args);
struct MemChunk* currChunk = NULL;
if (byteSize)
{
byteSize = (byteSize + 31) & -32;
if (byteSize <= memHeader->mh_Free)
{
struct MemChunk* newChunk;
struct MemChunk* prevChunk = (struct MemChunk*)&memHeader->mh_First;
while (currChunk = prevChunk->mc_Next)
{
if (currChunk->mc_Bytes == byteSize)
{
prevChunk->mc_Next = currChunk->mc_Next;
break;
}
else if (currChunk->mc_Bytes > byteSize)
{
newChunk = (struct MemChunk*)((ULONG)currChunk + byteSize);
newChunk->mc_Next = currChunk->mc_Next;
newChunk->mc_Bytes = currChunk->mc_Bytes - byteSize;
prevChunk->mc_Next = newChunk;
break;
}
prevChunk = currChunk;
}
if (currChunk)
{
memHeader->mh_Free -= byteSize;
UBYTE* buffer = (APTR)currChunk;
for (int i=0; i < byteSize; i++)
{
buffer[i] = 0;
}
}
}
}
args.db_Arg[0] = (ULONG)currChunk;
printDebug(PowerPCBase, (struct DebugArgs*)&args);
return (APTR)currChunk;
}
/********************************************************************************************
*
* VOID DeallocatePPC(struct Library*, struct MemHeader*, APTR, ULONG)
*
*********************************************************************************************/
PPCFUNCTION VOID DeallocatePPC(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct MemHeader* memHeader,
__reg("r5") APTR memoryBlock, __reg("r6") ULONG byteSize)
{
struct DebugArgs args;
args.db_Function = 67 | (3<<8) | (1<<16) | (3<<17);
args.db_Arg[0] = (ULONG)memHeader;
args.db_Arg[1] = (ULONG)memoryBlock;
args.db_Arg[2] = byteSize;
printDebug(PowerPCBase, (struct DebugArgs*)&args);
if (byteSize)
{
ULONG testSize = (((ULONG)memoryBlock) - ((ULONG)(memoryBlock) & -32));
struct MemChunk* testChunk = (struct MemChunk*)((ULONG)(memoryBlock) & -32);
ULONG freeSize = testSize + byteSize + 31;
if (freeSize &= -32)
{
struct MemChunk* testChunk = (struct MemChunk*)memoryBlock;
struct MemChunk* currChunk = (struct MemChunk*)&memHeader->mh_First;
ULONG flag = 0;
while (currChunk->mc_Next)
{
if (currChunk->mc_Next > testChunk)
{
if ((currChunk == (struct MemChunk*)&memHeader->mh_First) || ((ULONG)testChunk > currChunk->mc_Bytes + (ULONG)currChunk))
{
break;
}
else if ((ULONG)testChunk < currChunk->mc_Bytes + (ULONG)currChunk)
{
HaltError(ERR_EMEM);
}
flag = 1;
currChunk->mc_Bytes += freeSize;
testChunk = currChunk;
break;
}
else if (currChunk->mc_Next == testChunk)
{
HaltError(ERR_EMEM);
}
currChunk = currChunk->mc_Next;
}
if (!(flag))
{
testChunk->mc_Next = currChunk->mc_Next;
currChunk->mc_Next = testChunk;
testChunk->mc_Bytes = freeSize;
}
struct MemChunk* nextChunk = testChunk->mc_Next;
if (nextChunk)
{
if ((ULONG)nextChunk < (ULONG)(testChunk) + testChunk->mc_Bytes)
{
HaltError(ERR_EMEM);
}
else if ((ULONG)nextChunk == (ULONG)(testChunk) + testChunk->mc_Bytes)
{
testChunk->mc_Next = nextChunk->mc_Next;
testChunk->mc_Bytes = nextChunk->mc_Bytes + testChunk->mc_Bytes;
}
}
memHeader->mh_Free += freeSize;
}
}
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID printDebug(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct DebugArgs* args)
{
#if 0
ULONG* mem = (APTR)(PowerPCBase->pp_PPCMemBase + OFFSET_SYSMEM + 0x100);
mem [args->db_Function & 0xff] += 1;
mem [-1] = (args->db_Function & 0xff);
#endif
if ((PowerPCBase->pp_DebugLevel) && (!(PowerPCBase->pp_ExceptionMode)))
{
ULONG flag = args->db_Function & (1<<16);
ULONG level = args->db_Function >> 17;
if (level > PowerPCBase->pp_DebugLevel - 1)
{
return;
}
args->db_Function &= ~(7<<16);
struct MsgFrame* myFrame = CreateMsgFramePPC(PowerPCBase);
args->db_ProcessName = PowerPCBase->pp_ThisPPCProc->tp_Task.tc_Node.ln_Name;
UBYTE oldlevel = PowerPCBase->pp_DebugLevel;
while (!(LockMutexPPC((volatile ULONG)&PowerPCBase->pp_Mutex)));
PowerPCBase->pp_DebugLevel = 0;
myCopyMemPPC(PowerPCBase, (APTR)args, (APTR)&myFrame->mf_PPCArgs, sizeof(struct DebugArgs));
PowerPCBase->pp_DebugLevel = oldlevel;
FreeMutexPPC((ULONG)&PowerPCBase->pp_Mutex);
if (flag)
{
myFrame->mf_Identifier = ID_DBGS;
}
else
{
myFrame->mf_Identifier = ID_DBGE;
}
SendMsgFramePPC(PowerPCBase, myFrame);
args->db_Function |= (level << 17);
}
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID GetBATs(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct TaskPPC* task)
{
ULONG key = mySuper(PowerPCBase);
MoveFromBAT(CHMMU_BAT0, (struct BATArray*)(((ULONG)task->tp_BATStorage) + 0));
MoveFromBAT(CHMMU_BAT1, (struct BATArray*)(((ULONG)task->tp_BATStorage) + 16));
MoveFromBAT(CHMMU_BAT2, (struct BATArray*)(((ULONG)task->tp_BATStorage) + 32));
MoveFromBAT(CHMMU_BAT3, (struct BATArray*)(((ULONG)task->tp_BATStorage) + 48));
MoveToBAT(CHMMU_BAT0, (struct BATArray*)&PowerPCBase->pp_StoredBATs[0]);
MoveToBAT(CHMMU_BAT1, (struct BATArray*)&PowerPCBase->pp_StoredBATs[1]);
MoveToBAT(CHMMU_BAT2, (struct BATArray*)&PowerPCBase->pp_StoredBATs[2]);
MoveToBAT(CHMMU_BAT3, (struct BATArray*)&PowerPCBase->pp_StoredBATs[3]);
myUser(PowerPCBase, key);
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID StoreBATs(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct TaskPPC* task)
{
ULONG key = mySuper(PowerPCBase);
MoveToBAT(CHMMU_BAT0, (struct BATArray*)&PowerPCBase->pp_StoredBATs[0]);
MoveToBAT(CHMMU_BAT1, (struct BATArray*)&PowerPCBase->pp_StoredBATs[1]);
MoveToBAT(CHMMU_BAT2, (struct BATArray*)&PowerPCBase->pp_StoredBATs[2]);
MoveToBAT(CHMMU_BAT3, (struct BATArray*)&PowerPCBase->pp_StoredBATs[3]);
MoveFromBAT(CHMMU_BAT0, (struct BATArray*)(((ULONG)task->tp_BATStorage) + 0));
MoveFromBAT(CHMMU_BAT1, (struct BATArray*)(((ULONG)task->tp_BATStorage) + 16));
MoveFromBAT(CHMMU_BAT2, (struct BATArray*)(((ULONG)task->tp_BATStorage) + 32));
MoveFromBAT(CHMMU_BAT3, (struct BATArray*)(((ULONG)task->tp_BATStorage) + 64));
myUser(PowerPCBase, key);
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID MoveToBAT(__reg("r3") ULONG BATnumber, __reg("r4") struct BATArray* batArray)
{
switch (BATnumber)
{
case CHMMU_BAT0:
{
mvtoBAT0(batArray);
break;
}
case CHMMU_BAT1:
{
mvtoBAT1(batArray);
break;
}
case CHMMU_BAT2:
{
mvtoBAT2(batArray);
break;
}
case CHMMU_BAT3:
{
mvtoBAT3(batArray);
break;
}
}
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID MoveFromBAT(__reg("r3") ULONG BATnumber, __reg("r4") struct BATArray* batArray)
{
switch (BATnumber)
{
case CHMMU_BAT0:
{
mvfrBAT0(batArray);
break;
}
case CHMMU_BAT1:
{
mvfrBAT1(batArray);
break;
}
case CHMMU_BAT2:
{
mvfrBAT2(batArray);
break;
}
case CHMMU_BAT3:
{
mvfrBAT3(batArray);
break;
}
}
return;
}
/********************************************************************************************
*
* Function to set up the system processes.
*
*********************************************************************************************/
PPCFUNCTION VOID SystemStart(__reg("r3") struct PrivatePPCBase* PowerPCBase)
{
struct TaskPPC* myTask;
APTR myPool;
struct MemList* myMem;
while (1)
{
myWaitTime(PowerPCBase, 0, 0x4c0000); // Around 5 seconds.
while (myTask = (struct TaskPPC*)myRemHeadPPC(PowerPCBase, (struct List*)&PowerPCBase->pp_RemovedTasks))
{
if ((myTask->tp_Flags & TASKPPCF_CRASHED) && (myTask->tp_Flags & TASKPPCF_CREATORPPC))
{
myDeleteTaskPPC(PowerPCBase, myTask);
}
while (myPool = (APTR)myRemHeadPPC(PowerPCBase, (struct List*)&myTask->tp_TaskPools))
{
myDeletePoolPPC(PowerPCBase, myPool);
}
while (myMem = (struct MemList*)myRemHeadPPC(PowerPCBase, (struct List*)&myTask->tp_Task.tc_MemEntry))
{
FreeVec68K(PowerPCBase, myMem->ml_ME[0].me_Un.meu_Addr);
FreeVec68K(PowerPCBase, myMem);
}
FreeVec68K(PowerPCBase, myTask);
}
}
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID FreeAllExcMem(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct ExcInfo* myInfo)
{
APTR myData;
if (myData = myInfo->ei_MachineCheck)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_DataAccess)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_InstructionAccess)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_Alignment)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_Program)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_FPUnavailable)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_Decrementer)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_SystemCall)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_Trace)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_PerfMon)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_IABR)
{
FreeVec68K(PowerPCBase,myData);
}
if (myData = myInfo->ei_Interrupt)
{
FreeVec68K(PowerPCBase,myData);
}
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID AddExcList(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct ExcInfo* excInfo, __reg("r5") struct ExcData* newData, __reg("r6") ULONG* currExc, __reg("r7") ULONG flag)
{
myCopyMemPPC(PowerPCBase, (APTR)excInfo, (APTR)newData, sizeof(struct ExcData));
currExc[0] = (ULONG)newData;
newData->ed_ExcID = flag;
excInfo->ei_ExcData.ed_LastExc = newData;
while (!(LockMutexPPC((volatile ULONG)&PowerPCBase->pp_Mutex)));
myAddHeadPPC(PowerPCBase, (struct List*)&PowerPCBase->pp_ReadyExc, (struct Node*)newData);
FreeMutexPPC((ULONG)&PowerPCBase->pp_Mutex);
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID SetupRunPPC(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct MsgFrame* myFrame)
{
while (!(LockMutexPPC((volatile ULONG)&PowerPCBase->pp_Mutex)));
struct TaskPPC* myTask = PowerPCBase->pp_ThisPPCProc;
myTask->tp_Task.tc_SigRecvd |= myFrame->mf_Signals;
FreeMutexPPC((ULONG)&PowerPCBase->pp_Mutex);
myObtainSemaphorePPC(PowerPCBase, (struct SignalSemaphorePPC*)&PowerPCBase->pp_SemSnoopList);
ULONG myCode = (ULONG)myFrame->mf_PPCArgs.PP_Code + myFrame->mf_PPCArgs.PP_Offset;
if (myFrame->mf_PPCArgs.PP_Offset)
{
myCode = *((ULONG*)(myCode + 2));
}
struct SnoopData* currSnoop = (struct SnoopData*)PowerPCBase->pp_Snoop.mlh_Head;
struct SnoopData* nextSnoop;
while (nextSnoop = (struct SnoopData*)currSnoop->sd_Node.ln_Succ)
{
if (currSnoop->sd_Type == SNOOP_START)
{
ULONG (*runSnoop)(__reg("r2") ULONG, __reg("r3") struct TaskPPC*,
__reg("r4") ULONG, __reg("r5") struct Task*,
__reg("r6") ULONG) = currSnoop->sd_Code;
ULONG tempR2 = getR2();
runSnoop(currSnoop->sd_Data, myTask, myCode, (struct Task*)myFrame->mf_Arg[2], CREATOR_68K);
storeR2(tempR2);
}
currSnoop = nextSnoop;
}
myReleaseSemaphorePPC(PowerPCBase, (struct SignalSemaphorePPC*)&PowerPCBase->pp_SemSnoopList);
if ((myFrame->mf_PPCArgs.PP_Stack) && (myFrame->mf_PPCArgs.PP_StackSize))
{
mySetCache(PowerPCBase, CACHE_DCACHEINV, myFrame->mf_PPCArgs.PP_Stack, myFrame->mf_PPCArgs.PP_StackSize);
}
myTask->tp_Task.tc_SigAlloc = myFrame->mf_Arg[1];
struct iframe storeFrame;
RunCPP((struct iframe*)&storeFrame, myCode, &myFrame->mf_PPCArgs);
struct MsgFrame* newFrame = CreateMsgFramePPC(PowerPCBase);
newFrame->mf_Identifier = ID_FPPC;
newFrame->mf_Message.mn_Length = MSGLEN;
newFrame->mf_Message.mn_Node.ln_Type = NT_MESSAGE;
while (!(LockMutexPPC((volatile ULONG)&PowerPCBase->pp_Mutex)));
newFrame->mf_Arg[0] = myTask->tp_Task.tc_SigAlloc;
newFrame->mf_Signals = myTask->tp_Task.tc_SigRecvd & 0xfffff000;
myTask->tp_Task.tc_SigRecvd &= 0xfff;
FreeMutexPPC((ULONG)&PowerPCBase->pp_Mutex);
newFrame->mf_Message.mn_ReplyPort = myFrame->mf_Message.mn_ReplyPort;
newFrame->mf_PPCTask = myTask;
myCopyMemPPC(PowerPCBase, &myFrame->mf_PPCArgs.PP_Regs, &newFrame->mf_PPCArgs.PP_Regs, (15*4) + (8*8));
SendMsgFramePPC(PowerPCBase, newFrame);
FreeMsgFramePPC(PowerPCBase, myFrame);
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID StartTask(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct MsgFrame* myFrame)
{
SetupRunPPC(PowerPCBase, myFrame);
struct TaskPPC* myTask = PowerPCBase->pp_ThisPPCProc;
struct PrivateTask* myPTask = (struct PrivateTask*)myTask;
struct MsgFrame* newFrame;
struct MsgPort* myPort;
ULONG signals;
ULONG mask;
while(1)
{
signals = myWaitPPC(PowerPCBase, myTask->tp_Task.tc_SigAlloc & 0xfffff100);
if (signals & SIGF_DOS)
{
if (mask = signals & ~SIGF_DOS)
{
while (!(LockMutexPPC((volatile ULONG)&PowerPCBase->pp_Mutex)));
myTask->tp_Task.tc_SigRecvd |= mask;
FreeMutexPPC((ULONG)&PowerPCBase->pp_Mutex);
}
while (newFrame = (struct MsgFrame*)myGetMsgPPC(PowerPCBase, myTask->tp_Msgport))
{
switch (newFrame->mf_Identifier)
{
case ID_TPPC:
{
SetupRunPPC(PowerPCBase, newFrame);
break;
}
case ID_END:
{
KillTask(PowerPCBase, newFrame);
break;
}
default:
{
HaltError(0xBAD0BAD0);
break; //error
}
}
}
}
else if (mask = signals & ~SIGF_DOS)
{
if (myPort = myPTask->pt_MirrorPort)
{
mySignal68K(PowerPCBase, myPort->mp_SigTask, mask);
}
}
}
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID EndTask(VOID)
{
struct PPCZeroPage *myZP = 0;
ULONG key = mySuper(NULL); //Super does not use PowerPCBase
struct PrivatePPCBase* PowerPCBase = (struct PrivatePPCBase*)myZP->zp_PowerPCBase;
myUser(PowerPCBase, key);
myDeleteTaskPPC(PowerPCBase, NULL);
return;
}
/********************************************************************************************
*
*
*
*********************************************************************************************/
PPCFUNCTION VOID KillTask(__reg("r3") struct PrivatePPCBase* PowerPCBase, __reg("r4") struct MsgFrame* myFrame)
{
FreeMsgFramePPC(PowerPCBase, myFrame);
myObtainSemaphorePPC(PowerPCBase, (struct SignalSemaphorePPC*)&PowerPCBase->pp_SemSnoopList);
struct SnoopData* currSnoop = (struct SnoopData*)PowerPCBase->pp_Snoop.mlh_Head;
struct SnoopData* nextSnoop;
struct TaskPPC* PPCtask = PowerPCBase->pp_ThisPPCProc;
while (nextSnoop = (struct SnoopData*)currSnoop->sd_Node.ln_Succ)
{
if (currSnoop->sd_Type == SNOOP_EXIT)
{
ULONG tempR2 = getR2();
ULONG (*runSnoop)(__reg("r2") ULONG, __reg("r3") struct TaskPPC*) = currSnoop->sd_Code;
runSnoop(currSnoop->sd_Data, PPCtask);
storeR2(tempR2);
}
currSnoop = nextSnoop;
}
myReleaseSemaphorePPC(PowerPCBase, (struct SignalSemaphorePPC*)&PowerPCBase->pp_SemSnoopList);
myObtainSemaphorePPC(PowerPCBase, (struct SignalSemaphorePPC*)&PowerPCBase->pp_SemTaskList);
if (PPCtask->tp_TaskPtr)
{
myRemovePPC(PowerPCBase, (struct Node*)PPCtask->tp_TaskPtr);
}
PowerPCBase->pp_NumAllTasks -= 1;
myReleaseSemaphorePPC(PowerPCBase, (struct SignalSemaphorePPC*)&PowerPCBase->pp_SemTaskList);
PPCtask->tp_Task.tc_State = TS_REMOVED;
PowerPCBase->pp_FlagReschedule = -1;
CauseDECInterrupt(PowerPCBase);
TaskHalt();
}
/********************************************************************************************
*