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Diffstat (limited to 'src/assembler_ops.py')
| -rw-r--r-- | src/assembler_ops.py | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/assembler_ops.py b/src/assembler_ops.py new file mode 100644 index 0000000..538dd78 --- /dev/null +++ b/src/assembler_ops.py @@ -0,0 +1,108 @@ +from typing import Callable +from assembler_eval import * + +def make_alr(address: int, alu_op: str, left: str, right: str, target: str) -> list[int]: + """ALR 0000 TTTL LLRR RSSS""" + target_e = eval_expr(target) + left_e = eval_expr(left) + right_e = eval_expr(right) + alu_op_e = eval_expr(alu_op) + word = (0b0000 << 12) + \ + (target_e << 9) + \ + (left_e << 6) + \ + (right_e << 3) + \ + alu_op_e + return [word] + +def make_ali(address: int, alu_op: str, left: str, imm: str, target: str) -> list[int]: + """ALI 0001 TTTL LLII ISSS""" + target_e = eval_expr(target) + left_e = eval_expr(left) + imm_e = eval_expr(imm) + alu_op_e = eval_expr(alu_op) + word = (0b0001 << 12) + \ + (target_e << 9) + \ + (left_e << 6) + \ + (imm_e << 3) + \ + alu_op_e + return [word] + +def make_ldr(address: int, to_reg: str, addr_reg: str) -> list[int]: + """LDR 0010 TTTR RRXX XXXX""" + to_reg_e = eval_expr(to_reg) + addr_reg_e = eval_expr(addr_reg) + word = (0b0010 << 12) + \ + (to_reg_e << 9) + \ + (addr_reg_e << 6) + return [word] + +def make_str(address: int, from_reg: str, addr_reg: str) -> list[int]: + """STR 0011 TTTR RRXX XXXX""" + from_reg_e = eval_expr(from_reg) + addr_reg_e = eval_expr(addr_reg) + word = (0b0011 << 12) + \ + (from_reg_e << 9) + \ + (addr_reg_e << 6) + return [word] + +def make_ldi(address: int, to_reg: str, imm: str) -> list[int]: + """LDI 0100 TTTI IIII IIII""" + to_reg_e = eval_expr(to_reg) + imm_e = eval_expr(imm) + word = (0b0100 << 12) + \ + (to_reg_e << 9) + \ + imm_e + return [word] + +def make_jpr(address: int, addr_reg: str) -> list[int]: + """JPR 0101 XXXR RRXX XXXX""" + addr_reg_e = eval_expr(addr_reg) + word = (0b0101 << 12) + \ + (addr_reg_e << 6) + return [word] + +def make_jpi(address: int, imm: str) -> list[int]: + """JPI 0110 XXXI IIII IIII""" + imm_e = eval_expr(imm) + imm_e = imm_e - address - 1 + word = (0b0110 << 12) + \ + imm_e + return [word] + +def make_br(address: int, flag_s: str, addr_reg: str) -> list[int]: + """brr 0111 XFFR RRXX XXXX""" + flag_s_e = eval_expr(flag_s) + addr_reg_e = eval_expr(addr_reg) + word = (0b0111 << 12) + \ + (flag_s_e << 9) + \ + (addr_reg_e << 6) + return [word] + +def make_bri(address: int, flag_s: str, imm: str) -> list[int]: + """BRI 1000 XFFI IIII IIII""" + flag_s_e = eval_expr(flag_s) + imm_e = eval_expr(imm) + imm_e = imm_e - address - 1 + word = (0b1000 << 12) + \ + (flag_s_e << 9) + \ + imm_e + return [word] + +def make_hlt(address: int, ) -> list[int]: + """HLT 1111 XXXX XXXX XXXX""" + word = (0b1111 << 12) + return [word] + +operations: dict[str, Callable[..., list[int]]] = { + "alr": make_alr, + "alr": make_alr, + "ali": make_ali, + "ldr": make_ldr, + "str": make_str, + "ldi": make_ldi, + "jpr": make_jpr, + "jpi": make_jpi, + "brr": make_br, + "bri": make_bri, + "hlt": make_hlt, +}
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