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LLE JIT: Minimised exception checking. Instructions which need to check for exceptions are now marked in the analyser. Moved the checking for external interrupts to the point where the CPU writes to the control register.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6729 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
skidau
2011-01-03 14:19:11 +00:00
parent a6637c257f
commit ae71e63872
4 changed files with 24 additions and 29 deletions
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31
Source/Core/DSPCore/Src/DSPEmitter.cpp
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@ -210,34 +210,6 @@ void DSPEmitter::Compile(u16 start_addr)
blockLinkEntry = GetCodePtr();
// ASM version of DSPCore_CheckExternalInterrupt.
#ifdef _M_IX86 // All32
TEST(16, M(&g_dsp.cr), Imm16(CR_EXTERNAL_INT));
FixupBranch noExternalInterrupt = J_CC(CC_Z);
TEST(16, M(&g_dsp.r.sr), Imm16(SR_EXT_INT_ENABLE));
FixupBranch externalInterruptDisabled = J_CC(CC_Z);
OR(8, M(&g_dsp.exceptions), Imm8(1 << EXP_INT));
AND(16, M(&g_dsp.cr), Imm16(~CR_EXTERNAL_INT));
SetJumpTarget(externalInterruptDisabled);
SetJumpTarget(noExternalInterrupt);
#else
/* // TODO: Needs to be optimised
MOV(64, R(RAX), ImmPtr(&g_dsp.cr));
TEST(16, MatR(RAX), Imm16(CR_EXTERNAL_INT));
FixupBranch noExternalInterrupt = J_CC(CC_Z);
MOV(64, R(RAX), ImmPtr(&g_dsp.r.sr));
TEST(16, MatR(RAX), Imm16(SR_EXT_INT_ENABLE));
FixupBranch externalInterruptDisabled = J_CC(CC_Z);
MOV(64, R(RAX), ImmPtr(&g_dsp.exceptions));
OR(8, MatR(RAX), Imm8(1 << EXP_INT));
MOV(64, R(RAX), ImmPtr(&g_dsp.cr));
AND(16, MatR(RAX), Imm16(~CR_EXTERNAL_INT));
SetJumpTarget(externalInterruptDisabled);
SetJumpTarget(noExternalInterrupt);
*/
ABI_CallFunction((void *)&DSPCore_CheckExternalInterrupt);
#endif
compilePC = start_addr;
bool fixup_pc = false;
blockSize[start_addr] = 0;
@ -246,7 +218,8 @@ void DSPEmitter::Compile(u16 start_addr)
while (compilePC < start_addr + MAX_BLOCK_SIZE)
{
checkExceptions(blockSize[start_addr]);
if (DSPAnalyzer::code_flags[compilePC] & DSPAnalyzer::CODE_CHECK_INT)
checkExceptions(blockSize[start_addr]);
UDSPInstruction inst = dsp_imem_read(compilePC);
const DSPOPCTemplate *opcode = GetOpTemplate(inst);