libpcsxcore/r3000a.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
  18  ***************************************************************************/
  19
  20 #ifndef __R3000A_H__
  21 #define __R3000A_H__
  22
  23 #ifdef __cplusplus
  24 extern "C" {
  25 #endif
  26
  27 #include "psxcommon.h"
  28 #include "psxmem.h"
  29 #include "psxcounters.h"
  30 #include "psxbios.h"
  31
  32 enum {
  33         R3000ACPU_NOTIFY_CACHE_ISOLATED = 0,
  34         R3000ACPU_NOTIFY_CACHE_UNISOLATED = 1,
  35         R3000ACPU_NOTIFY_DMA3_EXE_LOAD = 2
  36 };
  37
  38 typedef struct {
  39         int  (*Init)();
  40         void (*Reset)();
  41         void (*Execute)();              /* executes up to a break */
  42         void (*ExecuteBlock)(); /* executes up to a jump */
  43         void (*Clear)(u32 Addr, u32 Size);
  44         void (*Notify)(int note, void *data);
  45         void (*ApplyConfig)();
  46         void (*Shutdown)();
  47 } R3000Acpu;
  48
  49 extern R3000Acpu *psxCpu;
  50 extern R3000Acpu psxInt;
  51 extern R3000Acpu psxRec;
  52
  53 typedef union {
  54 #if defined(__BIGENDIAN__)
  55         struct { u8 h3, h2, h, l; } b;
  56         struct { s8 h3, h2, h, l; } sb;
  57         struct { u16 h, l; } w;
  58         struct { s16 h, l; } sw;
  59 #else
  60         struct { u8 l, h, h2, h3; } b;
  61         struct { u16 l, h; } w;
  62         struct { s8 l, h, h2, h3; } sb;
  63         struct { s16 l, h; } sw;
  64 #endif
  65 } PAIR;
  66
  67 typedef union {
  68         struct {
  69                 u32   r0, at, v0, v1, a0, a1, a2, a3,
  70                                                 t0, t1, t2, t3, t4, t5, t6, t7,
  71                                                 s0, s1, s2, s3, s4, s5, s6, s7,
  72                                                 t8, t9, k0, k1, gp, sp, s8, ra, lo, hi;
  73         } n;
  74         u32 r[34]; /* Lo, Hi in r[32] and r[33] */
  75         PAIR p[34];
  76 } psxGPRRegs;
  77
  78 typedef union {
  79         struct {
  80                 u32     Index,     Random,    EntryLo0,  EntryLo1,
  81                                                 Context,   PageMask,  Wired,     Reserved0,
  82                                                 BadVAddr,  Count,     EntryHi,   Compare,
  83                                                 Status,    Cause,     EPC,       PRid,
  84                                                 Config,    LLAddr,    WatchLO,   WatchHI,
  85                                                 XContext,  Reserved1, Reserved2, Reserved3,
  86                                                 Reserved4, Reserved5, ECC,       CacheErr,
  87                                                 TagLo,     TagHi,     ErrorEPC,  Reserved6;
  88         } n;
  89         u32 r[32];
  90         PAIR p[32];
  91 } psxCP0Regs;
  92
  93 typedef struct {
  94         short x, y;
  95 } SVector2D;
  96
  97 typedef struct {
  98         short z, pad;
  99 } SVector2Dz;
 100
 101 typedef struct {
 102         short x, y, z, pad;
 103 } SVector3D;
 104
 105 typedef struct {
 106         short x, y, z, pad;
 107 } LVector3D;
 108
 109 typedef struct {
 110         unsigned char r, g, b, c;
 111 } CBGR;
 112
 113 typedef struct {
 114         short m11, m12, m13, m21, m22, m23, m31, m32, m33, pad;
 115 } SMatrix3D;
 116
 117 typedef union {
 118         struct {
 119                 SVector3D     v0, v1, v2;
 120                 CBGR          rgb;
 121                 s32          otz;
 122                 s32          ir0, ir1, ir2, ir3;
 123                 SVector2D     sxy0, sxy1, sxy2, sxyp;
 124                 SVector2Dz    sz0, sz1, sz2, sz3;
 125                 CBGR          rgb0, rgb1, rgb2;
 126                 s32          reserved;
 127                 s32          mac0, mac1, mac2, mac3;
 128                 u32 irgb, orgb;
 129                 s32          lzcs, lzcr;
 130         } n;
 131         u32 r[32];
 132         PAIR p[32];
 133 } psxCP2Data;
 134
 135 typedef union {
 136         struct {
 137                 SMatrix3D rMatrix;
 138                 s32      trX, trY, trZ;
 139                 SMatrix3D lMatrix;
 140                 s32      rbk, gbk, bbk;
 141                 SMatrix3D cMatrix;
 142                 s32      rfc, gfc, bfc;
 143                 s32      ofx, ofy;
 144                 s32      h;
 145                 s32      dqa, dqb;
 146                 s32      zsf3, zsf4;
 147                 s32      flag;
 148         } n;
 149         u32 r[32];
 150         PAIR p[32];
 151 } psxCP2Ctrl;
 152
 153 enum {
 154         PSXINT_SIO = 0,
 155         PSXINT_CDR,
 156         PSXINT_CDREAD,
 157         PSXINT_GPUDMA,
 158         PSXINT_MDECOUTDMA,
 159         PSXINT_SPUDMA,
 160         PSXINT_GPUBUSY,
 161         PSXINT_MDECINDMA,
 162         PSXINT_GPUOTCDMA,
 163         PSXINT_CDRDMA,
 164         PSXINT_NEWDRC_CHECK,
 165         PSXINT_RCNT,
 166         PSXINT_CDRLID,
 167         PSXINT_CDRPLAY,
 168         PSXINT_SPU_UPDATE,
 169         PSXINT_COUNT
 170 };
 171
 172 typedef struct psxCP2Regs {
 173         psxCP2Data CP2D;        /* Cop2 data registers */
 174         psxCP2Ctrl CP2C;        /* Cop2 control registers */
 175 } psxCP2Regs;
 176
 177 typedef struct {
 178         psxGPRRegs GPR;         /* General Purpose Registers */
 179         psxCP0Regs CP0;         /* Coprocessor0 Registers */
 180         union {
 181                 struct {
 182                         psxCP2Data CP2D;        /* Cop2 data registers */
 183                         psxCP2Ctrl CP2C;        /* Cop2 control registers */
 184                 };
 185                 psxCP2Regs CP2;
 186         };
 187     u32 pc;                             /* Program counter */
 188     u32 code;                   /* The instruction */
 189         u32 cycle;
 190         u32 interrupt;
 191         struct { u32 sCycle, cycle; } intCycle[32];
 192         u32 gteBusyCycle;
 193         u32 muldivBusyCycle;
 194         // warning: changing anything in psxRegisters requires update of all
 195         // asm in libpcsxcore/new_dynarec/, but this member can be replaced
 196         u32 reserved[2];
 197 } psxRegisters;
 198
 199 extern psxRegisters psxRegs;
 200
 201 /* new_dynarec stuff */
 202 extern u32 event_cycles[PSXINT_COUNT];
 203 extern u32 next_interupt;
 204
 205 void new_dyna_before_save(void);
 206 void new_dyna_after_save(void);
 207 void new_dyna_freeze(void *f, int mode);
 208
 209 #define new_dyna_set_event(e, c) { \
 210         s32 c_ = c; \
 211         u32 abs_ = psxRegs.cycle + c_; \
 212         s32 odi_ = next_interupt - psxRegs.cycle; \
 213         event_cycles[e] = abs_; \
 214         if (c_ < odi_) { \
 215                 /*printf("%u: next_interupt %d -> %d (%u)\n", psxRegs.cycle, odi_, c_, abs_);*/ \
 216                 next_interupt = abs_; \
 217         } \
 218 }
 219
 220 #if defined(__BIGENDIAN__)
 221
 222 #define _i32(x) *(s32 *)&x
 223 #define _u32(x) x
 224
 225 #define _i16(x) (((short *)&x)[1])
 226 #define _u16(x) (((unsigned short *)&x)[1])
 227
 228 #define _i8(x) (((char *)&x)[3])
 229 #define _u8(x) (((unsigned char *)&x)[3])
 230
 231 #else
 232
 233 #define _i32(x) *(s32 *)&x
 234 #define _u32(x) x
 235
 236 #define _i16(x) *(short *)&x
 237 #define _u16(x) *(unsigned short *)&x
 238
 239 #define _i8(x) *(char *)&x
 240 #define _u8(x) *(unsigned char *)&x
 241
 242 #endif
 243
 244 /**** R3000A Instruction Macros ****/
 245 #define _PC_       psxRegs.pc       // The next PC to be executed
 246
 247 #define _fOp_(code)             ((code >> 26)       )  // The opcode part of the instruction register
 248 #define _fFunct_(code)  ((code      ) & 0x3F)  // The funct part of the instruction register
 249 #define _fRd_(code)             ((code >> 11) & 0x1F)  // The rd part of the instruction register
 250 #define _fRt_(code)             ((code >> 16) & 0x1F)  // The rt part of the instruction register
 251 #define _fRs_(code)             ((code >> 21) & 0x1F)  // The rs part of the instruction register
 252 #define _fSa_(code)             ((code >>  6) & 0x1F)  // The sa part of the instruction register
 253 #define _fIm_(code)             ((u16)code)            // The immediate part of the instruction register
 254 #define _fTarget_(code) (code & 0x03ffffff)    // The target part of the instruction register
 255
 256 #define _fImm_(code)    ((s16)code)            // sign-extended immediate
 257 #define _fImmU_(code)   (code&0xffff)          // zero-extended immediate
 258
 259 #define _Op_     _fOp_(psxRegs.code)
 260 #define _Funct_  _fFunct_(psxRegs.code)
 261 #define _Rd_     _fRd_(psxRegs.code)
 262 #define _Rt_     _fRt_(psxRegs.code)
 263 #define _Rs_     _fRs_(psxRegs.code)
 264 #define _Sa_     _fSa_(psxRegs.code)
 265 #define _Im_     _fIm_(psxRegs.code)
 266 #define _Target_ _fTarget_(psxRegs.code)
 267
 268 #define _Imm_    _fImm_(psxRegs.code)
 269 #define _ImmU_   _fImmU_(psxRegs.code)
 270
 271 #define _rRs_   psxRegs.GPR.r[_Rs_]   // Rs register
 272 #define _rRt_   psxRegs.GPR.r[_Rt_]   // Rt register
 273 #define _rRd_   psxRegs.GPR.r[_Rd_]   // Rd register
 274 #define _rSa_   psxRegs.GPR.r[_Sa_]   // Sa register
 275 #define _rFs_   psxRegs.CP0.r[_Rd_]   // Fs register
 276
 277 #define _c2dRs_ psxRegs.CP2D.r[_Rs_]  // Rs cop2 data register
 278 #define _c2dRt_ psxRegs.CP2D.r[_Rt_]  // Rt cop2 data register
 279 #define _c2dRd_ psxRegs.CP2D.r[_Rd_]  // Rd cop2 data register
 280 #define _c2dSa_ psxRegs.CP2D.r[_Sa_]  // Sa cop2 data register
 281
 282 #define _rHi_   psxRegs.GPR.n.hi   // The HI register
 283 #define _rLo_   psxRegs.GPR.n.lo   // The LO register
 284
 285 #define _JumpTarget_    ((_Target_ * 4) + (_PC_ & 0xf0000000))   // Calculates the target during a jump instruction
 286 #define _BranchTarget_  ((s16)_Im_ * 4 + _PC_)                 // Calculates the target during a branch instruction
 287
 288 #define _SetLink(x)     psxRegs.GPR.r[x] = _PC_ + 4;       // Sets the return address in the link register
 289
 290 int  psxInit();
 291 void psxReset();
 292 void psxShutdown();
 293 void psxException(u32 code, u32 bd);
 294 void psxBranchTest();
 295 void psxExecuteBios();
 296 int  psxTestLoadDelay(int reg, u32 tmp);
 297 void psxDelayTest(int reg, u32 bpc);
 298 void psxTestSWInts();
 299 void psxJumpTest();
 300
 301 #ifdef __cplusplus
 302 }
 303 #endif
 304 #endif