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/* PCSX2 - PS2 Emulator for PCs |
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* Copyright (C) 2002-2010 PCSX2 Dev Team |
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* |
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms |
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* of the GNU Lesser General Public License as published by the Free Software Found- |
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* ation, either version 3 of the License, or (at your option) any later version. |
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* |
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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* PURPOSE. See the GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along with PCSX2. |
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* If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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|
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|
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#include "PrecompiledHeader.h" |
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#include "Common.h" |
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|
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#include "VUmicro.h" |
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|
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extern void _vuFlushAll(VURegs* VU); |
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|
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static void _vu0ExecUpper(VURegs* VU, u32 *ptr) { |
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VU->code = ptr[1]; |
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IdebugUPPER(VU0); |
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VU0_UPPER_OPCODE[VU->code & 0x3f](); |
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} |
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|
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static void _vu0ExecLower(VURegs* VU, u32 *ptr) { |
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VU->code = ptr[0]; |
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IdebugLOWER(VU0); |
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VU0_LOWER_OPCODE[VU->code >> 25](); |
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} |
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|
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int vu0branch = 0; |
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static void _vu0Exec(VURegs* VU) |
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{ |
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_VURegsNum lregs; |
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_VURegsNum uregs; |
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VECTOR _VF; |
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VECTOR _VFc; |
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REG_VI _VI; |
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REG_VI _VIc; |
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u32 *ptr; |
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int vfreg; |
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int vireg; |
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int discard=0; |
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|
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ptr = (u32*)&VU->Micro[VU->VI[REG_TPC].UL]; |
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VU->VI[REG_TPC].UL+=8; |
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|
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if (ptr[1] & 0x40000000) { |
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VU->ebit = 2; |
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} |
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if (ptr[1] & 0x20000000) { /* M flag */ |
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VU->flags|= VUFLAG_MFLAGSET; |
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// Console.WriteLn("fixme: M flag set"); |
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} |
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if (ptr[1] & 0x10000000) { /* D flag */ |
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if (VU0.VI[REG_FBRST].UL & 0x4) { |
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VU0.VI[REG_VPU_STAT].UL|= 0x2; |
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hwIntcIrq(INTC_VU0); |
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} |
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} |
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if (ptr[1] & 0x08000000) { /* T flag */ |
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if (VU0.VI[REG_FBRST].UL & 0x8) { |
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VU0.VI[REG_VPU_STAT].UL|= 0x4; |
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hwIntcIrq(INTC_VU0); |
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} |
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} |
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|
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VU->code = ptr[1]; |
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VU0regs_UPPER_OPCODE[VU->code & 0x3f](&uregs); |
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#ifndef INT_VUSTALLHACK |
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_vuTestUpperStalls(VU, &uregs); |
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#endif |
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|
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/* check upper flags */ |
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if (ptr[1] & 0x80000000) { /* I flag */ |
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_vu0ExecUpper(VU, ptr); |
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|
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VU->VI[REG_I].UL = ptr[0]; |
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memset(&lregs, 0, sizeof(lregs)); |
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} else { |
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VU->code = ptr[0]; |
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VU0regs_LOWER_OPCODE[VU->code >> 25](&lregs); |
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#ifndef INT_VUSTALLHACK |
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_vuTestLowerStalls(VU, &lregs); |
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#endif |
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|
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vu0branch = lregs.pipe == VUPIPE_BRANCH; |
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|
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vfreg = 0; vireg = 0; |
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if (uregs.VFwrite) { |
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if (lregs.VFwrite == uregs.VFwrite) { |
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// Console.Warning("*PCSX2*: Warning, VF write to the same reg in both lower/upper cycle"); |
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discard = 1; |
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} |
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if (lregs.VFread0 == uregs.VFwrite || |
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lregs.VFread1 == uregs.VFwrite) { |
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// Console.WriteLn("saving reg %d at pc=%x", i, VU->VI[REG_TPC].UL); |
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_VF = VU->VF[uregs.VFwrite]; |
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vfreg = uregs.VFwrite; |
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} |
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} |
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if (uregs.VIread & (1 << REG_CLIP_FLAG)) { |
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if (lregs.VIwrite & (1 << REG_CLIP_FLAG)) { |
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Console.Warning("*PCSX2*: Warning, VI write to the same reg in both lower/upper cycle"); |
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discard = 1; |
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} |
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if (lregs.VIread & (1 << REG_CLIP_FLAG)) { |
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_VI = VU0.VI[REG_CLIP_FLAG]; |
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vireg = REG_CLIP_FLAG; |
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} |
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} |
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|
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_vu0ExecUpper(VU, ptr); |
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|
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if (discard == 0) { |
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if (vfreg) { |
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_VFc = VU->VF[vfreg]; |
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VU->VF[vfreg] = _VF; |
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} |
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if (vireg) { |
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_VIc = VU->VI[vireg]; |
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VU->VI[vireg] = _VI; |
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} |
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|
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_vu0ExecLower(VU, ptr); |
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|
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if (vfreg) { |
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VU->VF[vfreg] = _VFc; |
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} |
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if (vireg) { |
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VU->VI[vireg] = _VIc; |
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} |
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} |
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} |
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_vuAddUpperStalls(VU, &uregs); |
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|
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if (!(ptr[1] & 0x80000000)) |
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_vuAddLowerStalls(VU, &lregs); |
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|
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_vuTestPipes(VU); |
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|
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if (VU->branch > 0) { |
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VU->branch--; |
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if (VU->branch == 0) { |
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VU->VI[REG_TPC].UL = VU->branchpc; |
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} |
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} |
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|
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if( VU->ebit > 0 ) { |
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if( VU->ebit-- == 1 ) { |
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_vuFlushAll(VU); |
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VU0.VI[REG_VPU_STAT].UL&= ~0x1; /* E flag */ |
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vif0Regs.stat.VEW = false; |
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} |
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} |
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} |
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|
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void vu0Exec(VURegs* VU) |
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{ |
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VU0.VI[REG_TPC].UL &= VU0_PROGMASK; |
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_vu0Exec(VU); |
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VU->cycle++; |
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|
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if (VU->VI[0].UL != 0) DbgCon.Error("VI[0] != 0!!!!\n"); |
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if (VU->VF[0].f.x != 0.0f) DbgCon.Error("VF[0].x != 0.0!!!!\n"); |
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if (VU->VF[0].f.y != 0.0f) DbgCon.Error("VF[0].y != 0.0!!!!\n"); |
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if (VU->VF[0].f.z != 0.0f) DbgCon.Error("VF[0].z != 0.0!!!!\n"); |
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if (VU->VF[0].f.w != 1.0f) DbgCon.Error("VF[0].w != 1.0!!!!\n"); |
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} |
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|
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// -------------------------------------------------------------------------------------- |
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// VU0microInterpreter |
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// -------------------------------------------------------------------------------------- |
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InterpVU0::InterpVU0() |
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{ |
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m_Idx = 0; |
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IsInterpreter = true; |
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} |
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|
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void InterpVU0::Step() |
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{ |
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vu0Exec( &VU0 ); |
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} |
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|
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void InterpVU0::Execute(u32 cycles) |
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{ |
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for (int i = (int)cycles; i > 0 ; i--) { |
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if (!(VU0.VI[REG_VPU_STAT].UL & 0x1)) { |
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if (VU0.branch || VU0.ebit) { |
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vu0Exec(&VU0); // run branch delay slot? |
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} |
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break; |
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} |
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vu0Exec(&VU0); |
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} |
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} |
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