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implement ppc opcodes eciwx/ecowx in interpreter. I think it's safe to do nothing for eieio

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4705 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Shawn Hoffman
2009-12-17 19:17:22 +00:00
parent 734daf362b
commit bb81ea26ca
2 changed files with 43 additions and 4 deletions
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1
Source/Core/Core/Src/PowerPC/Gekko.h
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@ -616,6 +616,7 @@ enum
SPR_SPRG1 = 273, SPR_SPRG1 = 273,
SPR_SPRG2 = 274, SPR_SPRG2 = 274,
SPR_SPRG3 = 275, SPR_SPRG3 = 275,
SPR_EAR = 282,
SPR_IBAT0U = 528, SPR_IBAT0U = 528,
SPR_IBAT0L = 529, SPR_IBAT0L = 529,
SPR_IBAT1U = 530, SPR_IBAT1U = 530,

44
Source/Core/Core/Src/PowerPC/Interpreter/Interpreter_LoadStore.cpp
View File

@ -319,19 +319,57 @@ void dcbz(UGeckoInstruction _inst)
Memory::Memset(Helper_Get_EA_X(_inst) & (~31), 0, 32); Memory::Memset(Helper_Get_EA_X(_inst) & (~31), 0, 32);
} }
// eciwx/ecowx technically should access the specified device
// We just do it instantly from ppc...and hey, it works! :D
void eciwx(UGeckoInstruction _inst) void eciwx(UGeckoInstruction _inst)
{ {
_assert_msg_(POWERPC,0,"eciwx - Not implemented"); u32 EA, b;
if (_inst.RA == 0)
b = 0;
else
b = m_GPR[_inst.RA];
EA = b + m_GPR[_inst.RB];
if (!PowerPC::ppcState.spr[SPR_EAR] & 0x80000000)
PowerPC::ppcState.Exceptions |= EXCEPTION_DSI;
//else if?
if (EA & 3)
PowerPC::ppcState.Exceptions |= EXCEPTION_ALIGNMENT;
// _assert_msg_(POWERPC,0,"eciwx - fill r%i with word @ %08x from device %02x",
// _inst.RS, EA, PowerPC::ppcState.spr[SPR_EAR] & 0x1f);
m_GPR[_inst.RS] = Memory::Read_U32(EA);
} }
void ecowx(UGeckoInstruction _inst) void ecowx(UGeckoInstruction _inst)
{ {
_assert_msg_(POWERPC,0,"ecowx - Not implemented"); u32 EA, b;
if (_inst.RA == 0)
b = 0;
else
b = m_GPR[_inst.RA];
EA = b + m_GPR[_inst.RB];
if (!PowerPC::ppcState.spr[SPR_EAR] & 0x80000000)
PowerPC::ppcState.Exceptions |= EXCEPTION_DSI;
//else if?
if (EA & 3)
PowerPC::ppcState.Exceptions |= EXCEPTION_ALIGNMENT;
// _assert_msg_(POWERPC,0,"ecowx - send stw request (%08x@%08x) to device %02x",
// m_GPR[_inst.RS], EA, PowerPC::ppcState.spr[SPR_EAR] & 0x1f);
Memory::Write_U32(m_GPR[_inst.RS], EA);
} }
void eieio(UGeckoInstruction _inst) void eieio(UGeckoInstruction _inst)
{ {
_assert_msg_(POWERPC,0,"eieio - Not implemented"); // Basically ensures that loads/stores before this instruction
// have completed (in order) before executing the next op.
// Prevents real ppc from "smartly" reordering loads/stores
// But (at least in interpreter) we do everything realtime anyways.
//_assert_msg_(POWERPC,0,"eieio - Not implemented");
} }
void icbi(UGeckoInstruction _inst) void icbi(UGeckoInstruction _inst)