From f07900a66952edb27114b8bdd68efc397b995796 Mon Sep 17 00:00:00 2001
From: Jan Tuomi <jans.tuomi@gmail.com>
Date: Mon, 10 Apr 2023 13:15:59 +0300
Subject: Add ext system

---
 src/assembler_ops.py | 108 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 src/assembler_ops.py

(limited to 'src/assembler_ops.py')

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,
+}
\ No newline at end of file
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