// sign-extended by bug in original hardware, according to Nocash docs
// GTE section 'Screen Offset and Distance'. The emulator does this
// sign extension when it is loaded to GTE by CTC2.
-//#define gteH (psxRegs.CP2C.p[26].sw.l)
-#define gteH (psxRegs.CP2C.p[26].w.l)
+//#define gteH (regs->CP2C.p[26].sw.l)
+#define gteH (regs->CP2C.p[26].w.l)
#define gteDQA (regs->CP2C.p[27].sw.l)
#define gteDQB (((s32 *)regs->CP2C.r)[28])
#define gteZSF3 (regs->CP2C.p[29].sw.l)
#ifndef FLAGLESS
-static inline u32 MFC2(int reg) {
- psxCP2Regs *regs = &psxRegs.CP2;
+const unsigned char gte_cycletab[64] = {
+ /* 1 2 3 4 5 6 7 8 9 a b c d e f */
+ 0, 15, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 6, 0, 0, 0,
+ 8, 8, 8, 19, 13, 0, 44, 0, 0, 0, 0, 17, 11, 0, 14, 0,
+ 30, 0, 0, 0, 0, 0, 0, 0, 5, 8, 17, 0, 0, 5, 6, 0,
+ 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 5, 39,
+};
+
+// warning: called by the dynarec
+int gteCheckStallRaw(u32 op_cycles, psxRegisters *regs) {
+ u32 left = regs->gteBusyCycle - regs->cycle;
+ int stall = 0;
+
+ if (left <= 44) {
+ //printf("c %2u stall %2u %u\n", op_cycles, left, regs->cycle);
+ regs->cycle = regs->gteBusyCycle;
+ stall = left;
+ }
+ regs->gteBusyCycle = regs->cycle + op_cycles;
+ return stall;
+}
+
+void gteCheckStall(u32 op) {
+ gteCheckStallRaw(gte_cycletab[op], &psxRegs);
+}
+
+u32 MFC2(struct psxCP2Regs *regs, int reg) {
switch (reg) {
case 1:
case 3:
case 9:
case 10:
case 11:
- psxRegs.CP2D.r[reg] = (s32)psxRegs.CP2D.p[reg].sw.l;
+ regs->CP2D.r[reg] = (s32)regs->CP2D.p[reg].sw.l;
break;
case 7:
case 17:
case 18:
case 19:
- psxRegs.CP2D.r[reg] = (u32)psxRegs.CP2D.p[reg].w.l;
+ regs->CP2D.r[reg] = (u32)regs->CP2D.p[reg].w.l;
break;
case 15:
- psxRegs.CP2D.r[reg] = gteSXY2;
+ regs->CP2D.r[reg] = gteSXY2;
break;
case 28:
case 29:
- psxRegs.CP2D.r[reg] = LIM(gteIR1 >> 7, 0x1f, 0, 0) |
+ regs->CP2D.r[reg] = LIM(gteIR1 >> 7, 0x1f, 0, 0) |
(LIM(gteIR2 >> 7, 0x1f, 0, 0) << 5) |
(LIM(gteIR3 >> 7, 0x1f, 0, 0) << 10);
break;
}
- return psxRegs.CP2D.r[reg];
+ return regs->CP2D.r[reg];
}
-static inline void MTC2(u32 value, int reg) {
- psxCP2Regs *regs = &psxRegs.CP2;
+void MTC2(struct psxCP2Regs *regs, u32 value, int reg) {
switch (reg) {
case 15:
gteSXY0 = gteSXY1;
return;
default:
- psxRegs.CP2D.r[reg] = value;
+ regs->CP2D.r[reg] = value;
}
}
-static inline void CTC2(u32 value, int reg) {
+void CTC2(struct psxCP2Regs *regs, u32 value, int reg) {
switch (reg) {
case 4:
case 12:
break;
}
- psxRegs.CP2C.r[reg] = value;
-}
-
-void gteMFC2() {
- if (!_Rt_) return;
- psxRegs.GPR.r[_Rt_] = MFC2(_Rd_);
-}
-
-void gteCFC2() {
- if (!_Rt_) return;
- psxRegs.GPR.r[_Rt_] = psxRegs.CP2C.r[_Rd_];
-}
-
-void gteMTC2() {
- MTC2(psxRegs.GPR.r[_Rt_], _Rd_);
-}
-
-void gteCTC2() {
- CTC2(psxRegs.GPR.r[_Rt_], _Rd_);
-}
-
-#define _oB_ (psxRegs.GPR.r[_Rs_] + _Imm_)
-
-void gteLWC2() {
- MTC2(psxMemRead32(_oB_), _Rt_);
-}
-
-void gteSWC2() {
- psxMemWrite32(_oB_, MFC2(_Rt_));
+ regs->CP2C.r[reg] = value;
}
#endif // FLAGLESS