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Core/DSPCore: Jit: only end emitting the current block when hitting an

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unconditional branch(or idle skip), emit check g_dsp.pc and return when
hitting a conditional branch.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6281 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
pierre
2010-10-14 13:17:38 +00:00
parent 47eb5c3416
commit 6d2c35a332
3 changed files with 243 additions and 221 deletions
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29
Source/Core/DSPCore/Src/DSPEmitter.cpp
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@ -225,10 +225,31 @@ const u8 *DSPEmitter::Compile(int start_addr) {
SetJumpTarget(rLoopCounterExit);
}
// End the block if we're at a loop end.
if (opcode->branch ||
(DSPAnalyzer::code_flags[addr-1] & DSPAnalyzer::CODE_LOOP_END) ||
(DSPAnalyzer::code_flags[addr] & DSPAnalyzer::CODE_IDLE_SKIP)) {
if (opcode->branch) {
if (opcode->uncond_branch) {
break;
} else {
//look at g_dsp.pc if we actually branched
#ifdef _M_IX86 // All32
MOV(16, R(AX), M(&(g_dsp.pc)));
#else
MOV(64, R(RAX), ImmPtr(&(g_dsp.pc)));
MOV(16, R(AX), MDisp(RAX,0));
#endif
CMP(16, R(AX), Imm16(addr));
FixupBranch rNoBranch = J_CC(CC_Z);
// ABI_RestoreStack(0);
ABI_PopAllCalleeSavedRegsAndAdjustStack();
MOV(32,R(EAX),Imm32(blockSize[start_addr]));
RET();
SetJumpTarget(rNoBranch);
}
}
// End the block if we're before an idle skip address
if (DSPAnalyzer::code_flags[addr] & DSPAnalyzer::CODE_IDLE_SKIP) {
break;
}
}