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diff --git a/cpu/sh2/sh2.h b/cpu/sh2/sh2.h
index 4603e84..42de630 100644
--- a/cpu/sh2/sh2.h
+++ b/cpu/sh2/sh2.h
@@ -39,6 +39,15 @@ typedef struct SH2_
 	void		*p_rom;
 	unsigned int	pdb_io_csum[2];
 
+#define SH2_STATE_RUN   (1 << 0)	// to prevent recursion
+#define SH2_STATE_SLEEP (1 << 1)
+#define SH2_STATE_CPOLL (1 << 2)	// polling comm regs
+#define SH2_STATE_VPOLL (1 << 3)	// polling VDP
+	unsigned int	state;
+	unsigned int	poll_addr;
+	int		poll_cycles;
+	int		poll_cnt;
+
 	// interpreter stuff
 	int		icount;		// cycles left in current timeslice
 	unsigned int	ea;
@@ -66,8 +75,6 @@ typedef struct SH2_
 #define C_SH2_TO_M68K(xsh2, c) \
 	((int)((c + 3) * (xsh2).mult_sh2_to_m68k) >> CYCLE_MULT_SHIFT)
 
-extern SH2 *sh2; // active sh2. XXX: consider removing
-
 int  sh2_init(SH2 *sh2, int is_slave);
 void sh2_finish(SH2 *sh2);
 void sh2_reset(SH2 *sh2);
@@ -91,4 +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);
 int REGPARM(3) p32x_sh2_write32(unsigned int a, unsigned int d, SH2 *sh2);
 
+// debug
+#ifdef DRC_CMP
+void do_sh2_trace(SH2 *current, int cycles);
+void do_sh2_cmp(SH2 *current);
+#endif
+
 #endif /* __SH2_H__ */