/[pcsx2_0.9.7]/trunk/pcsx2/VUmicro.cpp
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Contents of /trunk/pcsx2/VUmicro.cpp

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Revision 62 - (show annotations) (download)
Tue Sep 7 11:08:22 2010 UTC (9 years, 11 months ago) by william
File size: 3572 byte(s)
Auto Commited Import of: pcsx2-0.9.7-r3738-debug in ./trunk
1 /* PCSX2 - PS2 Emulator for PCs
2 * Copyright (C) 2002-2010 PCSX2 Dev Team
3 *
4 * PCSX2 is free software: you can redistribute it and/or modify it under the terms
5 * of the GNU Lesser General Public License as published by the Free Software Found-
6 * ation, either version 3 of the License, or (at your option) any later version.
7 *
8 * PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
9 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
10 * PURPOSE. See the GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License along with PCSX2.
13 * If not, see <http://www.gnu.org/licenses/>.
14 */
15
16 #include "PrecompiledHeader.h"
17 #include "Common.h"
18 #include "VUmicro.h"
19
20 #define useDeltaTime 1
21
22 #if useDeltaTime
23
24 // Executes a Block based on EE delta time
25 void BaseVUmicroCPU::ExecuteBlock(bool startUp) {
26 const u32& stat = VU0.VI[REG_VPU_STAT].UL;
27 const int test = m_Idx ? 0x100 : 1;
28 const int s = 1024*6; // Kick Start Cycles (Silver Surfer needs this amount)
29 const int c = 1024*1; // Continue Cycles
30 if (!(stat & test)) return;
31 if (startUp) { // Start Executing a microprogram
32 Execute(s); // Kick start VU
33
34 // Let VUs run behind EE instead of ahead
35 if (stat & test) {
36 cpuSetNextEventDelta((s+c)*2);
37 m_lastEEcycles = cpuRegs.cycle + (s*2);
38 }
39 }
40 else { // Continue Executing (VU roughly half the mhz of EE)
41 s32 delta = (s32)(u32)(cpuRegs.cycle - m_lastEEcycles) & ~1;
42 if (delta > 0) { // Enough time has passed
43 delta >>= 1; // Divide by 2 (unsigned)
44 Execute(delta); // Execute the time since the last call
45 if (stat & test) {
46 cpuSetNextEventDelta(c*2);
47 m_lastEEcycles = cpuRegs.cycle;
48 }
49 }
50 else cpuSetNextEventDelta(-delta); // Haven't caught-up from kick start
51 }
52 }
53
54 // This function is called by VU0 Macro (COP2) after transferring some
55 // EE data to VU0's registers. We want to run VU0 Micro right after this
56 // to ensure that the register is used at the correct time.
57 // This fixes spinning/hanging in some games like Ratchet and Clank's Intro.
58 void __fastcall BaseVUmicroCPU::ExecuteBlockJIT(BaseVUmicroCPU* cpu) {
59 const u32& stat = VU0.VI[REG_VPU_STAT].UL;
60 const int test = cpu->m_Idx ? 0x100 : 1;
61 const int c = 128; // VU Execution Cycles
62 if (stat & test) { // VU is running
63 cpu->Execute(c); // Execute VU
64 if (stat & test) {
65 cpu->m_lastEEcycles+=(c*2);
66 cpuSetNextEventDelta(c*2);
67 }
68 }
69 }
70
71 #else
72
73 // Executes a Block based on static preset cycles
74 void BaseVUmicroCPU::ExecuteBlock(bool startUp) {
75 const int vuRunning = m_Idx ? 0x100 : 1;
76 if (!(VU0.VI[REG_VPU_STAT].UL & vuRunning)) return;
77 if (startUp) { // Start Executing a microprogram
78 Execute(vu0RunCycles); // Kick start VU
79
80 // If the VU0 program didn't finish then we'll want to finish it up
81 // pretty soon. This fixes vmhacks in some games (Naruto Ultimate Ninja 2)
82 if(VU0.VI[REG_VPU_STAT].UL & vuRunning)
83 cpuSetNextEventDelta( 192 ); // fixme : ideally this should be higher, like 512 or so.
84 }
85 else {
86 Execute(vu0RunCycles);
87 //DevCon.Warning("VU0 running when in BranchTest");
88
89 // This helps keep the EE and VU0 in sync.
90 // Check Silver Surfer. Currently has SPS varying with different branch deltas set below.
91 if(VU0.VI[REG_VPU_STAT].UL & vuRunning)
92 cpuSetNextEventDelta( 768 );
93 }
94 }
95
96 // This function is called by VU0 Macro (COP2) after transferring
97 // EE data to a VU0 register...
98 void __fastcall BaseVUmicroCPU::ExecuteBlockJIT(BaseVUmicroCPU* cpu) {
99 cpu->Execute(128);
100 }
101
102 #endif

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