mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-03-12 06:39:14 +01:00
revert this for now, i need to read more
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2739 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Shawn Hoffman
parent
32b983ef83
commit
fc582ea560
@ -35,298 +35,280 @@
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namespace PowerPC
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{
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// STATE_TO_SAVE
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PowerPCState GC_ALIGNED16(ppcState);
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volatile CPUState state = CPU_STEPPING;
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// STATE_TO_SAVE
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PowerPCState GC_ALIGNED16(ppcState);
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volatile CPUState state = CPU_STEPPING;
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static CoreMode mode;
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static CoreMode mode;
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void CompactCR()
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{
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ppcState.cr = 0;
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for (int i = 0; i < 8; i++) {
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ppcState.cr |= ppcState.cr_fast[i] << (28 - i * 4);
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}
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}
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void ExpandCR()
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{
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for (int i = 0; i < 8; i++) {
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ppcState.cr_fast[i] = (ppcState.cr >> (28 - i * 4)) & 0xF;
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}
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}
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void DoState(PointerWrap &p)
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{
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p.Do(ppcState);
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}
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void ResetRegisters()
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{
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for (int i = 0; i < 32; i++)
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void CompactCR()
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{
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ppcState.gpr[i] = 0;
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riPS0(i) = 0;
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riPS1(i) = 0;
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ppcState.cr = 0;
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for (int i = 0; i < 8; i++) {
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ppcState.cr |= ppcState.cr_fast[i] << (28 - i * 4);
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}
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}
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memset(ppcState.spr, 0, sizeof(ppcState.spr));
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void ExpandCR()
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{
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for (int i = 0; i < 8; i++) {
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ppcState.cr_fast[i] = (ppcState.cr >> (28 - i * 4)) & 0xF;
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}
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}
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ppcState.cr = 0;
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ppcState.fpscr = 0;
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ppcState.pc = 0;
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ppcState.npc = 0;
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ppcState.Exceptions = 0;
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TL = 0;
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TU = 0;
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void DoState(PointerWrap &p)
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{
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p.Do(ppcState);
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}
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ppcState.msr = 0;
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rDEC = 0xFFFFFFFF;
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}
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void ResetRegisters()
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{
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for (int i = 0; i < 32; i++)
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{
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ppcState.gpr[i] = 0;
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riPS0(i) = 0;
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riPS1(i) = 0;
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}
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void Init()
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{
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enum {
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FPU_PREC_24 = 0 << 8,
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FPU_PREC_53 = 2 << 8,
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FPU_PREC_64 = 3 << 8,
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FPU_PREC_MASK = 3 << 8,
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};
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#ifdef _M_IX86
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// sets the floating-point lib to 53-bit
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// PowerPC has a 53bit floating pipeline only
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// eg: sscanf is very sensitive
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memset(ppcState.spr, 0, sizeof(ppcState.spr));
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ppcState.cr = 0;
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ppcState.fpscr = 0;
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ppcState.pc = 0;
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ppcState.npc = 0;
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ppcState.Exceptions = 0;
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TL = 0;
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TU = 0;
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ppcState.msr = 0;
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rDEC = 0xFFFFFFFF;
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}
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void Init()
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{
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enum {
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FPU_PREC_24 = 0 << 8,
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FPU_PREC_53 = 2 << 8,
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FPU_PREC_64 = 3 << 8,
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FPU_PREC_MASK = 3 << 8,
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};
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#ifdef _M_IX86
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// sets the floating-point lib to 53-bit
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// PowerPC has a 53bit floating pipeline only
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// eg: sscanf is very sensitive
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#ifdef _WIN32
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_control87(_PC_53, MCW_PC);
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_control87(_PC_53, MCW_PC);
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#else
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unsigned short _mode;
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asm ("fstcw %0" : : "m" (_mode));
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_mode = (_mode & ~FPU_PREC_MASK) | FPU_PREC_53;
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asm ("fldcw %0" : : "m" (_mode));
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unsigned short _mode;
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asm ("fstcw %0" : : "m" (_mode));
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_mode = (_mode & ~FPU_PREC_MASK) | FPU_PREC_53;
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asm ("fldcw %0" : : "m" (_mode));
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#endif
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#else
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//x64 doesn't need this - fpu is done with SSE
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//but still - set any useful sse options here
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//x64 doesn't need this - fpu is done with SSE
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//but still - set any useful sse options here
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#endif
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ResetRegisters();
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PPCTables::InitTables();
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ResetRegisters();
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PPCTables::InitTables();
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// Initialize both execution engines ...
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Interpreter::Init();
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jit.Init();
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// ... but start as interpreter by default.
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mode = MODE_INTERPRETER;
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state = CPU_STEPPING;
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}
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void Shutdown()
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{
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// Shutdown both execution engines. Doesn't matter which one is active.
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jit.Shutdown();
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Interpreter::Shutdown();
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}
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void SetMode(CoreMode new_mode)
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{
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if (new_mode == mode)
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return; // We don't need to do anything.
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mode = new_mode;
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switch (mode)
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{
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case MODE_INTERPRETER: // Switching from JIT to interpreter
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jit.ClearCache(); // Remove all those nasty JIT patches.
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break;
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case MODE_JIT: // Switching from interpreter to JIT.
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// Don't really need to do much. It'll work, the cache will refill itself.
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break;
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// Initialize both execution engines ...
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Interpreter::Init();
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jit.Init();
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// ... but start as interpreter by default.
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mode = MODE_INTERPRETER;
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state = CPU_STEPPING;
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}
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}
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void SingleStep()
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{
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switch (mode)
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void Shutdown()
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{
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case MODE_INTERPRETER:
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Interpreter::SingleStep();
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break;
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case MODE_JIT:
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jit.SingleStep();
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break;
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// Shutdown both execution engines. Doesn't matter which one is active.
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jit.Shutdown();
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Interpreter::Shutdown();
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}
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}
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void RunLoop()
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{
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state = CPU_RUNNING;
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switch (mode)
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void SetMode(CoreMode new_mode)
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{
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case MODE_INTERPRETER:
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Interpreter::Run();
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break;
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case MODE_JIT:
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jit.Run();
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break;
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}
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Host_UpdateDisasmDialog();
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}
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if (new_mode == mode)
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return; // We don't need to do anything.
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CPUState GetState()
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{
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return state;
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}
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volatile CPUState *GetStatePtr()
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{
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return &state;
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}
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void Start()
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{
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state = CPU_RUNNING;
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Host_UpdateDisasmDialog();
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}
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void Pause()
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{
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state = CPU_STEPPING;
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Host_UpdateDisasmDialog();
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}
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void Stop()
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{
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state = CPU_POWERDOWN;
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Host_UpdateDisasmDialog();
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}
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void CheckExceptions()
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{
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// This check is unnecessary in JIT mode. However, it probably doesn't really hurt.
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if (!ppcState.Exceptions)
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return;
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// TODO(ector):
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// gcemu uses the mask 0x87C0FFFF instead of 0x0780FF77
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// Investigate!
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// EXTERNAL INTTERUPT
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if (MSR & 0x0008000)
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{
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// EXCEPTION_SYSRESET (hard)
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// EXCEPTION_MACHINE_CHECK
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// EXCEPTION_SYSRESET (soft)
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if (ppcState.Exceptions & EXCEPTION_EXTERNAL_INT)
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mode = new_mode;
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switch (mode)
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{
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// Pokemon gets this "too early", it hasn't a handler yet
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ppcState.Exceptions &= ~EXCEPTION_EXTERNAL_INT; // clear exception
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case MODE_INTERPRETER: // Switching from JIT to interpreter
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jit.ClearCache(); // Remove all those nasty JIT patches.
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break;
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case MODE_JIT: // Switching from interpreter to JIT.
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// Don't really need to do much. It'll work, the cache will refill itself.
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break;
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}
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}
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void SingleStep()
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{
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switch (mode)
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{
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case MODE_INTERPRETER:
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Interpreter::SingleStep();
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break;
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case MODE_JIT:
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jit.SingleStep();
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break;
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}
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}
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void RunLoop()
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{
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state = CPU_RUNNING;
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switch (mode)
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{
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case MODE_INTERPRETER:
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Interpreter::Run();
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break;
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case MODE_JIT:
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jit.Run();
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break;
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}
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Host_UpdateDisasmDialog();
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}
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CPUState GetState()
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{
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return state;
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}
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volatile CPUState *GetStatePtr()
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{
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return &state;
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}
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void Start()
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{
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state = CPU_RUNNING;
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Host_UpdateDisasmDialog();
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}
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void Pause()
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{
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state = CPU_STEPPING;
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Host_UpdateDisasmDialog();
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}
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void Stop()
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{
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state = CPU_POWERDOWN;
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Host_UpdateDisasmDialog();
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}
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void CheckExceptions()
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{
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// This check is unnecessary in JIT mode. However, it probably doesn't really hurt.
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if (!ppcState.Exceptions)
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return;
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// TODO(ector):
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// gcemu uses the mask 0x87C0FFFF instead of 0x0780FF77
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// Investigate!
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if (ppcState.Exceptions & EXCEPTION_FPU_UNAVAILABLE)
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{
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//This happens a lot - Gamecube OS uses deferred FPU context switching
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SRR0 = PC; // re-execute the instruction
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SRR1 = MSR & 0x0780FF77;
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NPC = 0x80000800;
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INFO_LOG(GEKKO, "EXCEPTION_FPU_UNAVAILABLE");
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ppcState.Exceptions &= ~EXCEPTION_FPU_UNAVAILABLE;
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SRR1 |= 0x02; //recoverable
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}
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else if (ppcState.Exceptions & EXCEPTION_SYSCALL)
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{
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SRR0 = NPC; // execute next instruction when we come back from handler
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SRR1 = MSR & 0x0780FF77;
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NPC = 0x80000C00;
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INFO_LOG(GEKKO, "EXCEPTION_SYSCALL (PC=%08x)", PC);
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ppcState.Exceptions &= ~EXCEPTION_SYSCALL;
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SRR1 |= 0x02; //recoverable
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}
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else if (ppcState.Exceptions & EXCEPTION_DSI)
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{
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SRR0 = PC; // re-execute the instruction
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SRR1 = MSR & 0x0780FF77;
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NPC = 0x80000300;
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INFO_LOG(GEKKO, "EXCEPTION_DSI");
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ppcState.Exceptions &= ~EXCEPTION_DSI;
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//SRR1 |= 0x02; //make recoverable ?
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}
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else if (ppcState.Exceptions & EXCEPTION_ISI)
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{
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SRR0 = PC;
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SRR1 = (MSR & 0x0780FF77) | 0x40000000;
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NPC = 0x80000400;
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INFO_LOG(GEKKO, "EXCEPTION_ISI");
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ppcState.Exceptions &= ~EXCEPTION_ISI;
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//SRR1 |= 0x02; //make recoverable ?
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}
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else if (ppcState.Exceptions & EXCEPTION_ALIGNMENT)
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{
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//This never happens ATM
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SRR0 = NPC;
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NPC = 0x80000500;
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SRR1 = (MSR & 0x0780FF77);
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SRR1 = MSR & 0x0780FF77;
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NPC = 0x80000600;
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INFO_LOG(GEKKO, "EXCEPTION_EXTERNAL_INT");
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SRR1 |= 0x02; //set it to recoverable
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_dbg_assert_msg_(GEKKO, (SRR1 & 0x02) != 0, "GEKKO", "EXTERNAL_INT unrecoverable???"); // unrecoverable exception !?!
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INFO_LOG(GEKKO, "EXCEPTION_ALIGNMENT");
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ppcState.Exceptions &= ~EXCEPTION_ALIGNMENT;
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//SRR1 |= 0x02; //make recoverable ?
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}
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// EXCEPTION_PERF_MONITOR
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else if (ppcState.Exceptions & EXCEPTION_DECREMENTER)
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// EXTERNAL INTTERUPT
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else if (MSR & 0x0008000)
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{
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SRR0 = NPC;
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SRR1 = MSR & 0x0000FF77;
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NPC = 0x80000900;
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if (ppcState.Exceptions & EXCEPTION_EXTERNAL_INT)
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{
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// Pokemon gets this "too early", it hasn't a handler yet
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ppcState.Exceptions &= ~EXCEPTION_EXTERNAL_INT; // clear exception
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ppcState.Exceptions &= ~EXCEPTION_DECREMENTER;
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SRR0 = NPC;
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NPC = 0x80000500;
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SRR1 = (MSR & 0x0780FF77);
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INFO_LOG(GEKKO, "EXCEPTION_DECREMENTER");
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SRR1 |= 0x02; //make recoverable
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}
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else
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{
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_dbg_assert_msg_(GEKKO, 0, "Unknown EXT interrupt: Exceptions == %08x", ppcState.Exceptions);
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ERROR_LOG(GEKKO, "Unknown EXTERNAL INTERRUPT exception: Exceptions == %08x", ppcState.Exceptions);
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INFO_LOG(GEKKO, "EXCEPTION_EXTERNAL_INT");
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SRR1 |= 0x02; //set it to recoverable
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_dbg_assert_msg_(GEKKO, (SRR1 & 0x02) != 0, "GEKKO", "EXTERNAL_INT unrecoverable???"); // unrecoverable exception !?!
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}
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else if (ppcState.Exceptions & EXCEPTION_DECREMENTER)
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{
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SRR0 = NPC;
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SRR1 = MSR & 0x0000FF77;
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NPC = 0x80000900;
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ppcState.Exceptions &= ~EXCEPTION_DECREMENTER;
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INFO_LOG(GEKKO, "EXCEPTION_DECREMENTER");
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SRR1 |= 0x02; //make recoverable
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}
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else
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{
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_dbg_assert_msg_(GEKKO, 0, "Unknown EXT interrupt: Exceptions == %08x", ppcState.Exceptions);
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ERROR_LOG(GEKKO, "Unknown EXTERNAL INTERRUPT exception: Exceptions == %08x", ppcState.Exceptions);
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}
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}
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MSR &= ~0x0008000; // clear EE-bit so interrupts aren't possible anymore
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}
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else if (ppcState.Exceptions & EXCEPTION_ISI)
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void OnIdle(u32 _uThreadAddr)
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{
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SRR0 = PC;
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SRR1 = (MSR & 0x0780FF77) | 0x40000000;
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NPC = 0x80000400;
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INFO_LOG(GEKKO, "EXCEPTION_ISI");
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ppcState.Exceptions &= ~EXCEPTION_ISI;
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//SRR1 |= 0x02; //make recoverable ?
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u32 nextThread = Memory::Read_U32(_uThreadAddr);
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//do idle skipping
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if (nextThread == 0)
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CoreTiming::Idle();
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}
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// EXCEPTION_ADDR_BREAKPOINT
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else if (ppcState.Exceptions & EXCEPTION_PROGRAM)
|
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{
|
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SRR0 = NPC; // execute next instruction when we come back from handler
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SRR1 = MSR & 0x0780FF77;
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NPC = 0x80000700;
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INFO_LOG(GEKKO, "EXCEPTION_PROGRAM (PC=%08x)", PC);
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ppcState.Exceptions &= ~EXCEPTION_PROGRAM;
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SRR1 |= 0x02; //recoverable
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}
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else if (ppcState.Exceptions & EXCEPTION_SYSCALL)
|
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{
|
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SRR0 = NPC; // execute next instruction when we come back from handler
|
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SRR1 = MSR & 0x0780FF77;
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NPC = 0x80000C00;
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INFO_LOG(GEKKO, "EXCEPTION_SYSCALL (PC=%08x)", PC);
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ppcState.Exceptions &= ~EXCEPTION_SYSCALL;
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SRR1 |= 0x02; //recoverable
|
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}
|
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else if (ppcState.Exceptions & EXCEPTION_FPU_UNAVAILABLE)
|
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{
|
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//This happens a lot - Gamecube OS uses deferred FPU context switching
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SRR0 = PC; // re-execute the instruction
|
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SRR1 = MSR & 0x0780FF77;
|
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NPC = 0x80000800;
|
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INFO_LOG(GEKKO, "EXCEPTION_FPU_UNAVAILABLE");
|
||||
ppcState.Exceptions &= ~EXCEPTION_FPU_UNAVAILABLE;
|
||||
SRR1 |= 0x02; //recoverable
|
||||
}
|
||||
// EXCEPTION_PROGRAM (floating point)
|
||||
else if (ppcState.Exceptions & EXCEPTION_DSI)
|
||||
{
|
||||
SRR0 = PC; // re-execute the instruction
|
||||
SRR1 = MSR & 0x0780FF77;
|
||||
NPC = 0x80000300;
|
||||
|
||||
INFO_LOG(GEKKO, "EXCEPTION_DSI");
|
||||
ppcState.Exceptions &= ~EXCEPTION_DSI;
|
||||
//SRR1 |= 0x02; //make recoverable ?
|
||||
}
|
||||
else if (ppcState.Exceptions & EXCEPTION_ALIGNMENT)
|
||||
{
|
||||
// Alignment exceptions have priorities
|
||||
//This never happens ATM
|
||||
SRR0 = NPC;
|
||||
SRR1 = MSR & 0x0780FF77;
|
||||
NPC = 0x80000600;
|
||||
|
||||
INFO_LOG(GEKKO, "EXCEPTION_ALIGNMENT");
|
||||
ppcState.Exceptions &= ~EXCEPTION_ALIGNMENT;
|
||||
//SRR1 |= 0x02; //make recoverable ?
|
||||
}
|
||||
// Other DSI exceptions
|
||||
// EXCEPTION_TRACE
|
||||
MSR &= ~0x0008000; // clear EE-bit so interrupts aren't possible anymore
|
||||
}
|
||||
|
||||
void OnIdle(u32 _uThreadAddr)
|
||||
{
|
||||
u32 nextThread = Memory::Read_U32(_uThreadAddr);
|
||||
//do idle skipping
|
||||
if (nextThread == 0)
|
||||
CoreTiming::Idle();
|
||||
}
|
||||
|
||||
} // namespace
|
||||
} // namespace
|
||||
Loading…
x
Reference in New Issue
Block a user