1 /***************************************************************************
2 * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
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. *
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. *
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 ***************************************************************************/
27 #include "psxcommon.h"
29 enum R3000Aexception {
30 R3000E_Int = 0, // Interrupt
31 R3000E_AdEL = 4, // Address error (on load/I-fetch)
32 R3000E_AdES = 5, // Address error (on store)
33 R3000E_IBE = 6, // Bus error (instruction fetch)
34 R3000E_DBE = 7, // Bus error (data load/store)
35 R3000E_Syscall = 8, // syscall instruction
36 R3000E_Bp = 9, // Breakpoint - a break instruction
37 R3000E_RI = 10, // reserved instruction
38 R3000E_CpU = 11, // Co-Processor unusable
39 R3000E_Ov = 12 // arithmetic overflow
43 R3000ACPU_NOTIFY_CACHE_ISOLATED = 0,
44 R3000ACPU_NOTIFY_CACHE_UNISOLATED = 1,
45 R3000ACPU_NOTIFY_BEFORE_SAVE, // data arg - hle if non-null
46 R3000ACPU_NOTIFY_AFTER_LOAD,
49 enum blockExecCaller {
60 void (*Execute)(struct psxRegisters *regs);
61 /* executes up to a jump */
62 void (*ExecuteBlock)(struct psxRegisters *regs, enum blockExecCaller caller);
63 void (*Clear)(u32 Addr, u32 Size);
64 void (*Notify)(enum R3000Anote note, void *data);
65 void (*ApplyConfig)();
69 extern R3000Acpu *psxCpu;
70 extern R3000Acpu psxInt;
71 extern R3000Acpu psxRec;
74 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
75 struct { u8 h3, h2, h, l; } b;
76 struct { s8 h3, h2, h, l; } sb;
77 struct { u16 h, l; } w;
78 struct { s16 h, l; } sw;
80 struct { u8 l, h, h2, h3; } b;
81 struct { u16 l, h; } w;
82 struct { s8 l, h, h2, h3; } sb;
83 struct { s16 l, h; } sw;
89 u32 r0, at, v0, v1, a0, a1, a2, a3,
90 t0, t1, t2, t3, t4, t5, t6, t7,
91 s0, s1, s2, s3, s4, s5, s6, s7,
92 t8, t9, k0, k1, gp, sp, fp, ra, lo, hi;
94 u32 r[34]; /* Lo, Hi in r[32] and r[33] */
98 typedef union psxCP0Regs_ {
100 u32 Reserved0, Reserved1, Reserved2, BPC,
101 Reserved4, BDA, Target, DCIC,
102 BadVAddr, BDAM, Reserved10, BPCM,
103 SR, Cause, EPC, PRid,
127 unsigned char r, g, b, c;
131 short m11, m12, m13, m21, m22, m23, m31, m32, m33, pad;
136 SVector3D v0, v1, v2;
139 s32 ir0, ir1, ir2, ir3;
140 SVector2D sxy0, sxy1, sxy2, sxyp;
141 SVector2Dz sz0, sz1, sz2, sz3;
142 CBGR rgb0, rgb1, rgb2;
144 s32 mac0, mac1, mac2, mac3;
171 // corresponds to bits 31,30 of Cause reg
172 R3000A_BRANCH_TAKEN = 3,
173 R3000A_BRANCH_NOT_TAKEN = 2,
174 // none or tells that there was an exception in DS back to doBranch
175 R3000A_BRANCH_NONE_OR_EXCEPTION = 0,
178 typedef struct psxCP2Regs {
179 psxCP2Data CP2D; /* Cop2 data registers */
180 psxCP2Ctrl CP2C; /* Cop2 control registers */
183 typedef struct psxRegisters {
184 // note: some cores like lightrec don't keep their data here,
185 // so use R3000ACPU_NOTIFY_BEFORE_SAVE to sync
186 psxGPRRegs GPR; /* General Purpose Registers */
187 psxCP0Regs CP0; /* Coprocessor0 Registers */
190 psxCP2Data CP2D; /* Cop2 data registers */
191 psxCP2Ctrl CP2C; /* Cop2 control registers */
195 u32 pc; /* Program counter */
196 u32 code; /* The instruction */
199 struct { u32 sCycle, cycle; } intCycle[20];
200 u32 event_cycles[20];
203 u32 next_interupt; /* cycle */
207 u32 subCycle; /* interpreter cycle counting */
211 u8 branchSeen; /* interp. */
212 u8 branching; /* interp. R3000A_BRANCH_TAKEN / not, 0 if not branch */
213 u8 dloadSel; /* interp. delay load state */
221 // warning: changing anything in psxRegisters requires update of all
222 // asm in libpcsxcore/new_dynarec/ and may break savestates
225 extern psxRegisters psxRegs;
227 /* new_dynarec stuff */
228 void ndrc_freeze(void *f, int mode);
229 void ndrc_clear_full(void);
234 void psxException(u32 code, enum R3000Abdt bdt, psxCP0Regs *cp0);
235 void psxBranchTest();
236 void psxExecuteBios();
237 int psxExecuteBiosEnded(void);
240 void irq10Interrupt();
241 void psxScheduleIrq10(int irq_count, int x_cycles, int y);