From 6bfa9f4c9cf24d6cfaaa227722e9cdcca1ad6fe9 Mon Sep 17 00:00:00 2001
From: Aleksandar Markovic <amarkovic@wavecomp.com>
Date: Thu, 2 Aug 2018 16:16:05 +0200
Subject: [PATCH] target/mips: Add nanoMIPS decoding and extraction utilities
Add some basic utility functions and macros for nanoMIPS decoding
engine.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
---
target/mips/translate.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/target/mips/translate.c b/target/mips/translate.c
index 4184d91b7c..ab982cf6d6 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -16593,6 +16593,17 @@ enum {
*
*/
+
+/* extraction utilities */
+
+#define NANOMIPS_EXTRACT_RD(op) ((op >> 7) & 0x7)
+#define NANOMIPS_EXTRACT_RS(op) ((op >> 4) & 0x7)
+#define NANOMIPS_EXTRACT_RS2(op) uMIPS_RS(op)
+#define NANOMIPS_EXTRACT_RS1(op) ((op >> 1) & 0x7)
+#define NANOMIPS_EXTRACT_RD5(op) ((op >> 5) & 0x1f)
+#define NANOMIPS_EXTRACT_RS5(op) (op & 0x1f)
+
+
static int decode_nanomips_opc(CPUMIPSState *env, DisasContext *ctx)
{
return 2;