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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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19
Source/Core/VideoCommon/Src/CommandProcessor.cpp
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@ -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