Implement basic instruction handling

1 files changed, 36 insertions, 2 deletions

diff --git a/nios2.h b/nios2.h
index a299bc3..15edbe8 100644
--- a/nios2.h
+++ b/nios2.h
@@ -27,7 +27,41 @@ struct nios2 {
 	uint32_t pc;
 };
 
-#define PC_INC_NORMAL	0
-#define PC_INC_BY_INSTR	1
+/* Aliases for general-purpors registers */
+enum {
+	zero = 0,
+	at,
+	et = 24,
+	bt,
+	gp,
+	sp,
+	fp,
+	ea,
+	ba,
+	ra,
+};
+
+/* Aliases for control registers */
+enum {
+	status = 0,
+	estatus,
+	bstatus,
+	ienable,
+	ipending,
+	cpuid,
+	/* reserved */
+	exception = 7,
+	pteaddr,
+	tlbacc,
+	tlbmisc,
+	/* reserved */
+	badaddr = 12,
+	config,
+	mpubase,
+	mpuacc,
+
+};
+
+extern void nios2_cpu_reset(struct nios2 *cpu);
 
 #endif /* _NIOS2_H_ */