mirror of https://github.com/PCSX2/pcsx2.git
84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
/* 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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// This module contains code shared by both the dynarec and interpreter versions
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// of the VU0 micro.
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#include "PrecompiledHeader.h"
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#include "Common.h"
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#include "VUmicro.h"
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#include <cmath>
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using namespace R5900;
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// This is called by the COP2 as per the CTC instruction
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void vu0ResetRegs()
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{
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VU0.VI[REG_VPU_STAT].UL &= ~0xff; // stop vu0
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VU0.VI[REG_FBRST].UL &= ~0xff; // stop vu0
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vif0Regs.stat.VEW = false;
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}
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static __fi u32 vu0DenormalizeMicroStatus(u32 nstatus)
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{
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// from mVUallocSFLAGd()
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return ((nstatus >> 3) & 0x18u) | ((nstatus >> 11) & 0x1800u) | ((nstatus >> 14) & 0x3cf0000u);
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}
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static __fi void vu0SetMicroFlags(u32* flags, u32 value)
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{
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#ifdef _M_X86
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_mm_store_si128(reinterpret_cast<__m128i*>(flags), _mm_set1_epi32(value));
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#else
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flags[0] = flags[1] = flags[2] = flags[3] = value;
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#endif
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}
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void vu0ExecMicro(u32 addr) {
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VUM_LOG("vu0ExecMicro %x", addr);
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if(VU0.VI[REG_VPU_STAT].UL & 0x1) {
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DevCon.Warning("vu0ExecMicro > Stalling for previous microprogram to finish");
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vu0Finish();
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}
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// Need to copy the clip flag back to the interpreter in case COP2 has edited it
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const u32 CLIP = VU0.VI[REG_CLIP_FLAG].UL;
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const u32 MAC = VU0.VI[REG_MAC_FLAG].UL;
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const u32 STATUS = VU0.VI[REG_STATUS_FLAG].UL;
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VU0.clipflag = CLIP;
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VU0.macflag = MAC;
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VU0.statusflag = STATUS;
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// Copy flags to micro instances, since they may be out of sync if COP2 has run.
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// We do this at program start time, because COP2 can't execute until the program has completed,
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// but long-running program may be interrupted so we can't do it at dispatch time.
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vu0SetMicroFlags(VU0.micro_clipflags, CLIP);
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vu0SetMicroFlags(VU0.micro_macflags, MAC);
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vu0SetMicroFlags(VU0.micro_statusflags, vu0DenormalizeMicroStatus(STATUS));
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VU0.VI[REG_VPU_STAT].UL &= ~0xFF;
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VU0.VI[REG_VPU_STAT].UL |= 0x01;
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VU0.cycle = cpuRegs.cycle;
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if ((s32)addr != -1) VU0.VI[REG_TPC].UL = addr & 0x1FF;
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CpuVU0->SetStartPC(VU0.VI[REG_TPC].UL << 3);
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_vuExecMicroDebug(VU0);
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CpuVU0->ExecuteBlock(1);
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}
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