mirror of https://github.com/PCSX2/pcsx2.git
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/* Pcsx2 - Pc Ps2 Emulator
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* Copyright (C) 2002-2005 Pcsx2 Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#include <float.h>
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#include "Common.h"
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#include "VUmicro.h"
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/*****************************************/
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/* NEW FLAGS */ //By asadr. Thnkx F|RES :p
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/*****************************************/
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__inline void vuUpdateDI(VURegs * VU) {
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// u32 Flag_S = 0;
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// u32 Flag_I = 0;
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// u32 Flag_D = 0;
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//
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// /*
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// FLAG D - I
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// */
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// Flag_I = (VU->statusflag >> 4) & 0x1;
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// Flag_D = (VU->statusflag >> 5) & 0x1;
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//
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// VU->statusflag|= (Flag_I | (VU0.VI[REG_STATUS_FLAG].US[0] >> 4)) << 10;
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// VU->statusflag|= (Flag_D | (VU0.VI[REG_STATUS_FLAG].US[0] >> 5)) << 11;
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}
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#define VU_MAC_UPDATE(name, shift) \
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u32 name(VURegs * VU, float f) { \
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u32 v = *(u32*)&f; \
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int exp = (v >> 23) & 0xff; \
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u32 s = v & 0x80000000; \
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\
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if (s) VU->macflag |= 0x0010<<shift; \
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else VU->macflag &= ~(0x0010<<shift); \
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\
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if( f == 0 ) { \
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VU->macflag = (VU->macflag & ~(0x1100<<shift)) | (0x0001<<shift); \
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return v; \
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} \
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\
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switch(exp) { \
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case 0: \
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/* get rid of sign bit pauls3 */ \
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VU->macflag = (VU->macflag&~(0x1000<<shift)) | (0x0101<<shift); \
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return s; \
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case 255: \
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VU->macflag = (VU->macflag&~(0x0100<<shift)) | (0x1000<<shift); \
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return s|0x7f7fffff; /* max allowed */ \
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default: \
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VU->macflag = (VU->macflag & ~(0x1101<<shift)); \
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return v; \
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} \
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} \
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VU_MAC_UPDATE(VU_MACx_UPDATE, 3);
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VU_MAC_UPDATE(VU_MACy_UPDATE, 2);
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VU_MAC_UPDATE(VU_MACz_UPDATE, 1);
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VU_MAC_UPDATE(VU_MACw_UPDATE, 0);
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#define VU_MAC_CLEAR(name, shift) \
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void name(VURegs * VU) { \
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VU->macflag&= ~(0x1111<<shift); \
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} \
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VU_MAC_CLEAR(VU_MACx_CLEAR, 3);
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VU_MAC_CLEAR(VU_MACy_CLEAR, 2);
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VU_MAC_CLEAR(VU_MACz_CLEAR, 1);
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VU_MAC_CLEAR(VU_MACw_CLEAR, 0);
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void VU_STAT_UPDATE(VURegs * VU) {
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int newflag = 0 ;
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if (VU->macflag & 0x000F) newflag = 0x1;
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if (VU->macflag & 0x00F0) newflag |= 0x2;
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if (VU->macflag & 0x0F00) newflag |= 0x4;
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if (VU->macflag & 0xF000) newflag |= 0x8;
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VU->statusflag = (VU->statusflag&0xc30)|newflag|((VU->statusflag&0xf)<<6);
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}
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