diff options
Diffstat (limited to 'src/assembler_ops.py')
| -rw-r--r-- | src/assembler_ops.py | 49 |
1 files changed, 35 insertions, 14 deletions
diff --git a/src/assembler_ops.py b/src/assembler_ops.py index 538dd78..0177140 100644 --- a/src/assembler_ops.py +++ b/src/assembler_ops.py @@ -1,7 +1,13 @@ from typing import Callable from assembler_eval import * +from dataclasses import dataclass -def make_alr(address: int, alu_op: str, left: str, right: str, target: str) -> list[int]: +@dataclass +class Meta: + address: int + options: dict[str, str] + +def make_alr(meta: Meta, 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) @@ -14,11 +20,13 @@ def make_alr(address: int, alu_op: str, left: str, right: str, target: str) -> l alu_op_e return [word] -def make_ali(address: int, alu_op: str, left: str, imm: str, target: str) -> list[int]: +def make_ali(meta: Meta, 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) + if imm_e >= 2**3: + raise Exception("ALI immediate value does not fit in 3 bits: " + str(imm_e)) alu_op_e = eval_expr(alu_op) word = (0b0001 << 12) + \ (target_e << 9) + \ @@ -27,7 +35,7 @@ def make_ali(address: int, alu_op: str, left: str, imm: str, target: str) -> lis alu_op_e return [word] -def make_ldr(address: int, to_reg: str, addr_reg: str) -> list[int]: +def make_ldr(meta: Meta, 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) @@ -36,7 +44,7 @@ def make_ldr(address: int, to_reg: str, addr_reg: str) -> list[int]: (addr_reg_e << 6) return [word] -def make_str(address: int, from_reg: str, addr_reg: str) -> list[int]: +def make_str(meta: Meta, 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) @@ -45,7 +53,7 @@ def make_str(address: int, from_reg: str, addr_reg: str) -> list[int]: (addr_reg_e << 6) return [word] -def make_ldi(address: int, to_reg: str, imm: str) -> list[int]: +def make_ldi(meta: Meta, to_reg: str, imm: str) -> list[int]: """LDI 0100 TTTI IIII IIII""" to_reg_e = eval_expr(to_reg) imm_e = eval_expr(imm) @@ -54,22 +62,25 @@ def make_ldi(address: int, to_reg: str, imm: str) -> list[int]: imm_e return [word] -def make_jpr(address: int, addr_reg: str) -> list[int]: +def make_jpr(meta: Meta, 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]: +def make_jpi(meta: Meta, imm: str) -> list[int]: """JPI 0110 XXXI IIII IIII""" imm_e = eval_expr(imm) - imm_e = imm_e - address - 1 + imm_e = imm_e - meta.address - 1 + if imm_e >= 2**9: + raise Exception("JPI relative value does not fit in 9 bits: " + str(imm_e)) + word = (0b0110 << 12) + \ imm_e return [word] -def make_br(address: int, flag_s: str, addr_reg: str) -> list[int]: +def make_brr(meta: Meta, 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) @@ -78,17 +89,26 @@ def make_br(address: int, flag_s: str, addr_reg: str) -> list[int]: (addr_reg_e << 6) return [word] -def make_bri(address: int, flag_s: str, imm: str) -> list[int]: +def make_bri(meta: Meta, 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 + imm_e = imm_e - meta.address - 1 + if imm_e >= 2**9: + raise Exception("BRI relative value does not fit in 9 bits: " + str(imm_e)) word = (0b1000 << 12) + \ (flag_s_e << 9) + \ imm_e return [word] -def make_hlt(address: int, ) -> list[int]: +def make_lpc(meta: Meta, target: str) -> list[int]: + """LPC 1001 TTTX XXXX XXXX""" + target_e = eval_expr(target) + word = (0b1001 << 12) + \ + (target_e << 9) + return [word] + +def make_hlt(meta: Meta, ) -> list[int]: """HLT 1111 XXXX XXXX XXXX""" word = (0b1111 << 12) return [word] @@ -102,7 +122,8 @@ operations: dict[str, Callable[..., list[int]]] = { "ldi": make_ldi, "jpr": make_jpr, "jpi": make_jpi, - "brr": make_br, + "brr": make_brr, "bri": make_bri, + "lpc": make_lpc, "hlt": make_hlt, -}
\ No newline at end of file +} |