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Added proper handling of the EIE bit by EI and DI. (needed for liberx)

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This commit is contained in:
Jean-Philip Desjardins 2015-04-13 00:51:25 -04:00
parent d9b934a09e
commit 6c32b51d81
3 changed files with 15 additions and 4 deletions
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4
Source/COP_SCU.cpp
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@ -189,7 +189,7 @@ void CCOP_SCU::ERET()
void CCOP_SCU::EI()
{
m_codeGen->PushRel(offsetof(CMIPS, m_State.nCOP0[STATUS]));
m_codeGen->PushCst(0x00010001);
m_codeGen->PushCst(CMIPS::STATUS_EIE);
m_codeGen->Or();
m_codeGen->PullRel(offsetof(CMIPS, m_State.nCOP0[STATUS]));
@ -202,7 +202,7 @@ void CCOP_SCU::EI()
void CCOP_SCU::DI()
{
m_codeGen->PushRel(offsetof(CMIPS, m_State.nCOP0[STATUS]));
m_codeGen->PushCst(~0x00010001);
m_codeGen->PushCst(~CMIPS::STATUS_EIE);
m_codeGen->And();
m_codeGen->PullRel(offsetof(CMIPS, m_State.nCOP0[STATUS]));
}

3
Source/MIPS.h
View file

@ -147,7 +147,8 @@ public:
{
STATUS_IE = (1 << 0),
STATUS_EXL = (1 << 1),
STATUS_ERL = (1 << 2)
STATUS_ERL = (1 << 2),
STATUS_EIE = (1 << 16), //PS2 EE specific
};
static const char* m_sGPRName[];

12
Source/PS2OS.cpp
View file

@ -59,6 +59,8 @@
#define BIOS_ADDRESS_WAITTHREADPROC 0x1FC03100
#define BIOS_ADDRESS_ALARMHANDLER 0x1FC03200
#define INTERRUPTS_ENABLED_MASK (CMIPS::STATUS_IE | CMIPS::STATUS_EIE)
#define BIOS_ID_BASE 1
#define CONFIGPATH "./config/"
@ -209,6 +211,8 @@ void CPS2OS::Initialize()
m_semaWaitCount = 0;
m_semaWaitCaller = 0;
m_semaWaitThreadId = -1;
m_ee.m_State.nCOP0[CCOP_SCU::STATUS] |= CMIPS::STATUS_IE;
}
void CPS2OS::Release()
@ -1042,7 +1046,7 @@ void CPS2OS::ThreadShakeAndBake()
}
//Don't switch if interrupts are disabled
if(!(m_ee.m_State.nCOP0[CCOP_SCU::STATUS] & CMIPS::STATUS_IE))
if((m_ee.m_State.nCOP0[CCOP_SCU::STATUS] & INTERRUPTS_ENABLED_MASK) != INTERRUPTS_ENABLED_MASK)
{
return;
}
@ -1269,6 +1273,12 @@ CPS2OS::DECI2HANDLER* CPS2OS::GetDeci2Handler(uint32 id)
void CPS2OS::HandleInterrupt()
{
//Check if interrupts are enabled here because EIE bit isn't checked by CMIPS
if((m_ee.m_State.nCOP0[CCOP_SCU::STATUS] & INTERRUPTS_ENABLED_MASK) != INTERRUPTS_ENABLED_MASK)
{
return;
}
m_semaWaitCount = 0;
m_ee.GenerateInterrupt(0x1FC00200);
}