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I was wrong on the CPEnd issue, which reveals CPBreakpoint > CPEnd is possible and that explains why some BPs could never be achieved before.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5705 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
ayuanx 2010-06-15 09:58:43 +00:00
parent cab62472b8
commit 64299206d1
3 changed files with 20 additions and 11 deletions
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2
Source/Core/Core/Src/HW/GPFifo.cpp
View File

@ -81,7 +81,7 @@ void STACKALIGN CheckGatherPipe()
m_gatherPipeCount -= GATHER_PIPE_SIZE;
// increase the CPUWritePointer
if (ProcessorInterface::Fifo_CPUWritePointer + GATHER_PIPE_SIZE >= ProcessorInterface::Fifo_CPUEnd)
if (ProcessorInterface::Fifo_CPUWritePointer >= ProcessorInterface::Fifo_CPUEnd)
{
curMem -= ProcessorInterface::Fifo_CPUWritePointer - ProcessorInterface::Fifo_CPUBase;
ProcessorInterface::Fifo_CPUWritePointer = ProcessorInterface::Fifo_CPUBase;

19
Source/Core/VideoCommon/Src/CommandProcessor.cpp
View File

@ -158,7 +158,7 @@ void Init()
memset(&fifo,0,sizeof(fifo));
fifo.CPCmdIdle = 1 ;
fifo.CPReadIdle = 1;
fifo.CPReadIdle = 1; // We use it as UnderFlow flag now, otherwise we need a new volatile variable
fifo.bFF_Breakpoint = 0;
s_fifoIdleEvent.Init();
@ -394,6 +394,12 @@ void Write16(const u16 _Value, const u32 _Address)
if (!tmpCtrl.BPEnable)
Common::AtomicStore(fifo.bFF_Breakpoint, false);
if (tmpCtrl.FifoUnderflowIntEnable)
Common::AtomicStore(fifo.CPReadIdle, false);
if (tmpCtrl.FifoOverflowIntEnable)
m_CPStatusReg.OverflowHiWatermark = false;
fifo.bFF_BPInt = tmpCtrl.BPInt;
fifo.bFF_BPEnable = tmpCtrl.BPEnable;
fifo.bFF_GPReadEnable = tmpCtrl.GPReadEnable;
@ -560,10 +566,13 @@ void STACKALIGN GatherPipeBursted()
if (!m_CPCtrlReg.GPLinkEnable)
return;
_assert_msg_(COMMANDPROCESSOR, fifo.CPReadWriteDistance < fifo.CPEnd - fifo.CPBase, "FIFO is overflown by GatherPipe !");
if (g_VideoInitialize.bOnThread)
{
// update the fifo-pointer
if (fifo.CPWritePointer + GATHER_PIPE_SIZE >= fifo.CPEnd)
if (fifo.CPWritePointer >= fifo.CPEnd)
fifo.CPWritePointer = fifo.CPBase;
else
fifo.CPWritePointer += GATHER_PIPE_SIZE;
@ -611,7 +620,7 @@ void STACKALIGN GatherPipeBursted()
}
else
{
if (fifo.CPWritePointer + GATHER_PIPE_SIZE >= fifo.CPEnd)
if (fifo.CPWritePointer >= fifo.CPEnd)
fifo.CPWritePointer = fifo.CPBase;
else
fifo.CPWritePointer += GATHER_PIPE_SIZE;
@ -636,7 +645,7 @@ void CatchUpGPU()
while (fifo.bFF_GPReadEnable && fifo.CPReadWriteDistance && (!fifo.bFF_BPEnable || (fifo.bFF_BPEnable && !fifo.bFF_Breakpoint)))
{
// check if we are on a breakpoint
if (fifo.bFF_BPEnable && fifo.CPReadPointer == fifo.CPBreakpoint)
if (fifo.bFF_BPEnable && ((fifo.CPReadPointer <= fifo.CPBreakpoint) && (fifo.CPReadPointer + 32 > fifo.CPBreakpoint)))
{
//_assert_msg_(POWERPC,0,"BP: %08x",fifo.CPBreakpoint);
fifo.bFF_Breakpoint = 1;
@ -653,7 +662,7 @@ void CatchUpGPU()
LoadSSEState();
// increase the ReadPtr
if (fifo.CPReadPointer + 32 >= fifo.CPEnd)
if (fifo.CPReadPointer >= fifo.CPEnd)
{
fifo.CPReadPointer = fifo.CPBase;
// adjust, take care

10
Source/Core/VideoCommon/Src/Fifo.cpp
View File

@ -163,7 +163,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
// If we are in BP mode we only send 32B chunks to Video plugin for BP checking
if (_fifo.bFF_BPEnable)
{
if (readPtr == _fifo.CPBreakpoint)
if ((readPtr <= _fifo.CPBreakpoint) && (readPtr + 32 > _fifo.CPBreakpoint))
{
Common::AtomicStore(_fifo.bFF_Breakpoint, 1);
if (_fifo.bFF_BPInt)
@ -173,7 +173,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
}
distToSend = 32;
if (readPtr + 32 >= _fifo.CPEnd)
if (readPtr >= _fifo.CPEnd)
readPtr = _fifo.CPBase;
else
readPtr += 32;
@ -184,9 +184,9 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
distToSend = _fifo.CPReadWriteDistance;
// send 1024B chunk max length to have better control over PeekMessages' period
distToSend = distToSend > 1024 ? 1024 : distToSend;
if (readPtr + distToSend >= _fifo.CPEnd)
if (readPtr + distToSend >= _fifo.CPEnd + 32)
{
distToSend = _fifo.CPEnd - readPtr;
distToSend = _fifo.CPEnd + 32 - readPtr;
readPtr = _fifo.CPBase;
}
else
@ -208,7 +208,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
VideoFifo_CheckSwapRequest();
}
if (!_fifo.CPReadIdle && _fifo.CPReadWriteDistance <= _fifo.CPLoWatermark)
if (!_fifo.CPReadIdle && _fifo.CPReadWriteDistance < _fifo.CPLoWatermark)
{
Common::AtomicStore(_fifo.CPReadIdle, true);
CommandProcessor::UpdateInterruptsFromVideoPlugin();