piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-24 06:39:46 -06:00
Code Issues Packages Projects Releases Wiki Activity

LLE JIT:

Browse Source 
* Added 21 Arithmetic instructions to the JIT
* Used the DSPAnalyser to identify arithmetic/multiplier instructions that precede a conditional branch.  This allows the JIT to skip updating the SR when nothing would read from it.  Marked all arithmetic/multiplier instructions in the DSPTable for this purpose.
* Converted CheckExternalInterrupt into ASM
* Fixed a couple instructions in DSP Load/Store


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6633 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
skidau
2010-12-21 14:48:05 +00:00
parent 0030d55725
commit 6cb78515c6
11 changed files with 977 additions and 514 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
Source/Core/DSPCore/Src/DSPEmitter.cpp
View File

@ -91,7 +91,7 @@ void DSPEmitter::checkExceptions(u32 retval)
TEST(8, M(&g_dsp.exceptions), Imm8(0xff));
#else
MOV(64, R(RAX), ImmPtr(&g_dsp.exceptions));
TEST(8, MDisp(RAX,0), Imm8(0xff));
TEST(8, MatR(RAX), Imm8(0xff));
#endif
FixupBranch skipCheck = J_CC(CC_Z);
@ -123,7 +123,7 @@ void DSPEmitter::Default(UDSPInstruction inst)
MOV(16, M(&(g_dsp.pc)), Imm16(compilePC + 1));
#else
MOV(64, R(RAX), ImmPtr(&(g_dsp.pc)));
MOV(16, MDisp(RAX,0), Imm16(compilePC + 1));
MOV(16, MatR(RAX), Imm16(compilePC + 1));
#endif
}
@ -225,15 +225,6 @@ void DSPEmitter::Compile(int start_addr)
// ABI_AlignStack(0);
/*
// check if there is an external interrupt
if (! dsp_SR_is_flag_set(SR_EXT_INT_ENABLE))
return;
if (! (g_dsp.cr & CR_EXTERNAL_INT))
return;
g_dsp.cr &= ~CR_EXTERNAL_INT;
// Check for other exceptions
if (dsp_SR_is_flag_set(SR_INT_ENABLE))
return;
@ -244,7 +235,33 @@ void DSPEmitter::Compile(int 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[DSP_REG_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));
TEST(16, MDisp(RAX,DSP_REG_SR*2), 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;