rework sh2 sync, again..

[picodrive.git] / cpu / sh2 / sh2.h

diff --git a/cpu/sh2/sh2.h b/cpu/sh2/sh2.h
index a69a159..42de630 100644 (file)
--- a/cpu/sh2/sh2.h
+++ b/cpu/sh2/sh2.h
@@ -39,6 +39,15 @@ typedef struct SH2_
        void            *p_rom;\r
        unsigned int    pdb_io_csum[2];\r
 \r
+#define SH2_STATE_RUN   (1 << 0)       // to prevent recursion\r
+#define SH2_STATE_SLEEP (1 << 1)\r
+#define SH2_STATE_CPOLL (1 << 2)       // polling comm regs\r
+#define SH2_STATE_VPOLL (1 << 3)       // polling VDP\r
+       unsigned int    state;\r
+       unsigned int    poll_addr;\r
+       int             poll_cycles;\r
+       int             poll_cnt;\r
+\r
        // interpreter stuff\r
        int             icount;         // cycles left in current timeslice\r
        unsigned int    ea;\r
@@ -52,20 +61,33 @@ typedef struct SH2_
        int     REGPARM(2) (*irq_callback)(struct SH2_ *sh2, int level);\r
        int     is_slave;\r
 \r
-       unsigned int    cycles_aim;     // subtract sh2_icount to get global counter\r
-       unsigned int    cycles_done;\r
+       unsigned int    cycles_timeslice;\r
+\r
+       // we use 68k reference cycles for easier sync\r
+       unsigned int    m68krcycles_done;\r
+       unsigned int    mult_m68k_to_sh2;\r
+       unsigned int    mult_sh2_to_m68k;\r
 } SH2;\r
 \r
-extern SH2 *sh2; // active sh2. XXX: consider removing\r
+#define CYCLE_MULT_SHIFT 10\r
+#define C_M68K_TO_SH2(xsh2, c) \\r
+       ((int)((c) * (xsh2).mult_m68k_to_sh2) >> CYCLE_MULT_SHIFT)\r
+#define C_SH2_TO_M68K(xsh2, c) \\r
+       ((int)((c + 3) * (xsh2).mult_sh2_to_m68k) >> CYCLE_MULT_SHIFT)\r
 \r
 int  sh2_init(SH2 *sh2, int is_slave);\r
 void sh2_finish(SH2 *sh2);\r
 void sh2_reset(SH2 *sh2);\r
-void sh2_irl_irq(SH2 *sh2, int level, int nested_call);\r
+int  sh2_irl_irq(SH2 *sh2, int level, int nested_call);\r
 void sh2_internal_irq(SH2 *sh2, int level, int vector);\r
 void sh2_do_irq(SH2 *sh2, int level, int vector);\r
+void sh2_pack(const SH2 *sh2, unsigned char *buff);\r
+void sh2_unpack(SH2 *sh2, const unsigned char *buff);\r
+\r
+int  sh2_execute(SH2 *sh2, int cycles);\r
 \r
-void sh2_execute(SH2 *sh2, int cycles);\r
+// regs, pending_int*, cycles, reserved\r
+#define SH2_STATE_SIZE ((24 + 2 + 2 + 12) * 4)\r
 \r
 // pico memhandlers\r
 // XXX: move somewhere else\r
@@ -76,4 +98,10 @@ int REGPARM(3) p32x_sh2_write8 (unsigned int a, unsigned int d, SH2 *sh2);
 int REGPARM(3) p32x_sh2_write16(unsigned int a, unsigned int d, SH2 *sh2);\r
 int REGPARM(3) p32x_sh2_write32(unsigned int a, unsigned int d, SH2 *sh2);\r
 \r
+// debug\r
+#ifdef DRC_CMP\r
+void do_sh2_trace(SH2 *current, int cycles);\r
+void do_sh2_cmp(SH2 *current);\r
+#endif\r
+\r
 #endif /* __SH2_H__ */\r