first ISA
Instruction format
R-type
| 0-5 | 6-8 | 9-13 | 14-18 | 19-23 |
|---|---|---|---|---|
| Opcode | d_type | ra | rb | rd |
I-type
| 0-5 | 6-8 | 9-13 | 14-18 | 19-31 |
|---|---|---|---|---|
| Opcode | d_type | ra | rd | imm |
-B-type
| 0-5 | 6-8 | 9-13 | 14-18 | 19-31 |
|---|---|---|---|---|
| Opcode | d_type | ra | rd | imm |
Data type supported
d_type: i8, i16, i32, f8, f16, f32
Instruction list
| Type | Assembly | Binary | Comments |
|---|---|---|---|
| R-type | add.i32 ra, rb, rd | ||
| I-type | addi.i32 ra, imm, rd | 解决数据初始化 | |
| R-type | madd.i32 ra, rb, rd | 乘加运算 | |
| I-type | ld.i32 ra, imm, rd | 加载数据到寄存器，用imm可以解决数组偏移 | |
| I-type | st.i32 ra, imm, rd | 存储数据到memory，用imm可以解决数组偏移 | |
| R-type | beq ra, rb, rd | ||
| I-type | jr imm, rd |