From 15398c34d38489bf14a100bbf01fb9fb4c7e46cb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= Date: Tue, 12 Dec 2017 18:53:02 +0100 Subject: Implement branch and jump instructions --- qtmips_machine/alu.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'qtmips_machine/alu.cpp') diff --git a/qtmips_machine/alu.cpp b/qtmips_machine/alu.cpp index 0350412..73c49e4 100644 --- a/qtmips_machine/alu.cpp +++ b/qtmips_machine/alu.cpp @@ -17,6 +17,10 @@ std::uint32_t alu_operate(enum AluOp operation, std::uint32_t s, std::uint32_t t case ALU_OP_SRAV: // TODO is this correct implementation? (Should we be masking top most bit?) return ((t & 0x7fffffff) >> s) | (t & 0x80000000); + case ALU_OP_JR: + case ALU_OP_JALR: + // Do nothing as we solve this when we are handling program counter in instruction decode (handle_pc) + return 0; case ALU_OP_MOVZ: // We do this just to implement valid alu operation but we have to evaluate comparison way before this to disable register write return t == 0 ? s : 0; -- cgit v1.2.3