diff options
Diffstat (limited to 'qtmips_machine/alu.h')
| -rw-r--r-- | qtmips_machine/alu.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/qtmips_machine/alu.h b/qtmips_machine/alu.h index 2e30ee9..2c311d2 100644 --- a/qtmips_machine/alu.h +++ b/qtmips_machine/alu.h @@ -4,6 +4,7 @@ #include <cstdint> #include <QString> #include <QObject> +#include <registers.h> // TODO Any other operations? We seems to be missing a lot of them. enum AluOp : std::uint8_t { @@ -13,6 +14,10 @@ enum AluOp : std::uint8_t { ALU_OP_SLLV, ALU_OP_SRLV = 6, ALU_OP_SRAV, + ALU_OP_MFHI = 16, + ALU_OP_MTHI, + ALU_OP_MFLO, + ALU_OP_MTLO, ALU_OP_ADD = 32, ALU_OP_ADDU, ALU_OP_SUB, @@ -31,8 +36,9 @@ enum AluOp : std::uint8_t { // s: Loaded from rs. Also calles as source. // t: Loaded from rt or immediate field from instruction it self. Also called as target. // sa: This is value directly from instruction it self (sa section) used for shift operations +// regs: Registers used. We need direct access to lo and hi registers (those are not accessed from core it self but from alu directly // Returned value is commonly saved to rt/rd or any other way passed trough core -std::uint32_t alu_operate(enum AluOp operation, std::uint32_t s, std::uint32_t t, std::uint8_t sa); +std::uint32_t alu_operate(enum AluOp operation, std::uint32_t s, std::uint32_t t, std::uint8_t sa, Registers *regs); // Returns string representation of ALU instruction (internally used by Instruction::to_str) QString alu_str(enum AluOp operation, std::uint32_t s, std::uint32_t t, std::uint8_t sa); |