mirror of https://github.com/PCSX2/pcsx2.git
181 lines
3.8 KiB
C
181 lines
3.8 KiB
C
/* ZeroGS KOSMOS
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* Copyright (C) 2005-2006 zerofrog@gmail.com
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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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#ifndef GIFTRANSFER_H_INCLUDED
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#define GIFTRANSFER_H_INCLUDED
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#include "Regs.h"
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#include "Util.h"
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// If you notice bugs in the newest revisions, you might try disabling this,
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// to see if they are related.
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#define NEW_GIF_TRANSFER
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enum GIF_FLG
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{
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GIF_FLG_PACKED = 0,
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GIF_FLG_REGLIST = 1,
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GIF_FLG_IMAGE = 2,
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GIF_FLG_IMAGE2 = 3
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};
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//
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// GIFTag
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union GIFTag
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{
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u64 ai64[2];
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u32 ai32[4];
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struct
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{
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u32 NLOOP:15;
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u32 EOP:1;
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u32 _PAD1:16;
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u32 _PAD2:14;
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u32 PRE:1;
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u32 PRIM:11;
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u32 FLG:2; // enum GIF_FLG
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u32 NREG:4;
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u64 REGS:64;
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};
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void set(u32 *data)
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{
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for(int i = 0; i <= 3; i++)
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{
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ai32[i] = data[i];
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}
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}
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GIFTag(u32 *data)
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{
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set(data);
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}
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GIFTag(){ ai64[0] = 0; ai64[1] = 0; }
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};
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// EE part. Data transfer packet description
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typedef struct
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{
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#ifdef NEW_GIF_TRANSFER
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u32 mode;
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int reg;
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u64 regs;
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u32 nloop;
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int eop;
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int nreg;
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u32 adonly;
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GIFTag tag;
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#else
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int mode;
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int regn;
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u64 regs;
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int nloop;
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int eop;
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int nreg;
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u32 adonly;
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GIFTag tag;
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#endif
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#ifdef NEW_GIF_TRANSFER
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void setTag(u32 *data)
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{
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tag.set(data);
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nloop = tag.NLOOP;
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eop = tag.EOP;
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mode = tag.FLG;
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// Hmm....
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nreg = tag.NREG << 2;
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if (nreg == 0) nreg = 64;
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regs = tag.REGS;
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reg = 0;
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// GS_LOG("GIFtag: %8.8lx_%8.8lx_%8.8lx_%8.8lx: EOP=%d, NLOOP=%x, FLG=%x, NREG=%d, PRE=%d\n",
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// data[3], data[2], data[1], data[0],
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// path->eop, path->nloop, mode, path->nreg, tag.PRE);
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}
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u32 GetReg()
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{
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return (regs >> reg) & 0xf;
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}
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bool StepReg()
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{
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reg += 4;
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if (reg == nreg)
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{
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reg = 0;
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nloop--;
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if (nloop == 0)
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{
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return false;
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}
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}
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return true;
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}
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#else
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void setTag(u32 *data)
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{
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tag.set(data);
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nloop = tag.NLOOP;
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eop = tag.EOP;
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u32 tagpre = tag.PRE;
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u32 tagprim = tag.PRIM;
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u32 tagflg = tag.FLG;
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// Hmm....
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nreg = tag.NREG << 2;
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if (nreg == 0) nreg = 64;
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// GS_LOG("GIFtag: %8.8lx_%8.8lx_%8.8lx_%8.8lx: EOP=%d, NLOOP=%x, FLG=%x, NREG=%d, PRE=%d\n",
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// data[3], data[2], data[1], data[0],
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// path->eop, path->nloop, tagflg, path->nreg, tagpre);
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mode = tagflg;
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switch (mode)
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{
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case GIF_FLG_PACKED:
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regs = *(u64 *)(data+2);
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regn = 0;
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if (tagpre) GIFRegHandlerPRIM((u32*)&tagprim);
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break;
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case GIF_FLG_REGLIST:
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regs = *(u64 *)(data+2);
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regn = 0;
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break;
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}
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}
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#endif
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} pathInfo;
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void _GSgifPacket(pathInfo *path, u32 *pMem);
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void _GSgifRegList(pathInfo *path, u32 *pMem);
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void _GSgifTransfer(pathInfo *path, u32 *pMem, u32 size);
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extern GIFRegHandler g_GIFPackedRegHandlers[];
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extern GIFRegHandler g_GIFRegHandlers[];
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#endif // GIFTRANSFER_H_INCLUDED
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