From 4b91acba17a4d3a3205e99da5d69844a83da2c43 Mon Sep 17 00:00:00 2001
From: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Date: Thu, 7 Feb 2019 10:53:37 +0100
Subject: Implement BSHFL instruction and ignore RDHWR instruction.

---
 qtmips_machine/alu.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'qtmips_machine/alu.cpp')

diff --git a/qtmips_machine/alu.cpp b/qtmips_machine/alu.cpp
index 8016444..2ac27a5 100644
--- a/qtmips_machine/alu.cpp
+++ b/qtmips_machine/alu.cpp
@@ -128,6 +128,8 @@ std::uint32_t machine::alu_operate(enum AluOp operation, std::uint32_t s, std::u
             return (s < t) ? 1 : 0;
         case ALU_OP_LUI:
             return t << 16;
+        case ALU_OP_BSHFL:
+            return (uint32_t)(int32_t)(int8_t)t;
         case  ALU_OP_PASS_T: // Pass s argument without change for JAL
             return t;
         case ALU_OP_BREAK:
-- 
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