Instr.txt

Pyke internal insn set:

16 regs.
- 15 GPRs
- x0 is always zero

16bit insn:
- add  %d, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |   %d  | 0000  |
  +---------+--------+-------+-------+

- addi %d, %s1, #imm
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   imm   |   %s1  |   %d  | 0001  |
  +---------+--------+-------+-------+

- sub  %d, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |   %d  | 0010  |
  +---------+--------+-------+-------+

- lw   %d, %base, #offset
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   off   |  %base |   %s  | 0011  |
  +---------+--------+-------+-------+

- sw   %d, %base, #offset
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s    |  %base |  imm  | 0100  |
  +---------+--------+-------+-------+

- sll  %d, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |   %d  | 0101  |
  +---------+--------+-------+-------+

- srl  %d, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |   %d  | 0110  |
  +---------+--------+-------+-------+

- sra  %d, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |   %d  | 0111  |
  +---------+--------+-------+-------+

- xor  %d, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |   %d  | 1000  |
  +---------+--------+-------+-------+

- and  %d, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |   %d  | 1001  |
  +---------+--------+-------+-------+

- or  %d, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |   %d  | 1010  |
  +---------+--------+-------+-------+


- beq  $target, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |$target| 1011  |
  +---------+--------+-------+-------+
  pc = pc + $target if %s1 == %s2

- jr  %d + imm, %rp
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  | imm     |   %rp  |   %d  | 1100  |
  +---------+--------+-------+-------+

- slli  %d, %s1, #imm
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   imm   |   %s1  |   %d  | 1101  |
  +---------+--------+-------+-------+

- bne  $target, %s1, %s2
  +---------+--------+-------+-------+
  | [15:12] | [11:8] | [7:4] | [3:0] |
  +---------+--------+-------+-------+
  |   %s2   |   %s1  |$target| 1110  |
  +---------+--------+-------+-------+
  pc = pc + $target if %s1 != %s2