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#!/usr/bin/env python3
# Assemble ATK16 assembly to bytecode
import sys
from .asm_ops import *
from .asm_eval import *
from .asm_pass0 import pass_0
from .asm_pass1 import pass_1
from .asm_pass2 import pass_2
from .asm_pass3 import pass_3, DbgLabelTable, DbgSourceTable
from .asm_pass4 import pass_4
from .pad_bin import pad_binary
@dataclass
class AssemblyResult:
program: bytearray
dbg_label_table: DbgLabelTable
dbg_source_table: DbgSourceTable
def assemble(source: str, file_name: str) -> AssemblyResult:
src_lines = source.splitlines()
result0 = pass_0(src_lines, file_name)
result1 = pass_1(result0)
result2 = pass_2(result1)
result3 = pass_3(result2)
result4 = pass_4(result3)
nop = bytearray([0b1000_0000, 0])
result = bytearray()
for line in result4.lines:
for (symbol, symbol_value) in result4.symbols.items():
if line.address == symbol_value:
print(f"{symbol}:")
if len(result) < 2 * line.address + 1:
result.extend((2 * line.address + 1 - len(result)) * nop)
out_line = f"{line.address:>08x} 0x{line.word:>04x} {line.text}"
out_spaces_n = (42 - len(out_line))
out_spaces = out_spaces_n * " " if out_spaces_n > 0 else 4 * " "
print(f"{out_line}{out_spaces}{line.original_text}")
result[2 * line.address + 0] = ((line.word >> 8) & 0xff)
result[2 * line.address + 1] = ((line.word >> 0) & 0xff)
return AssemblyResult(
program=result,
dbg_label_table=result4.dbg_label_table,
dbg_source_table=result4.dbg_source_table,
)
def show_help():
print("usage: assembler.py [-h|--help] [-o outfile] <infile>")
print("")
print("Positional arguments:")
print(" <infile> input file in .atk16 assembler text format (use - for stdin)")
print("")
print("Options:")
print(" -o outfile output file in binary format")
print(" -h|--help show this help")
@dataclass
class CliOptions:
infile: str
outfile: str
def parse_cli_args(args: list[str]) -> CliOptions:
i = 1
infile: str | None = None
outfile: str | None = None
while i < len(args):
if args[i] == "-o":
if i + 1 >= len(args):
print("Missing argument for -o")
show_help()
sys.exit(1)
outfile = args[i + 1]
i += 2
elif args[i] == "-h" or args[i] == "--help":
show_help()
sys.exit(0)
elif not infile:
infile = args[i]
i += 1
else:
raise Exception(f"Unknown argument: {args[i]}")
if not infile or not outfile:
show_help()
sys.exit(1)
return CliOptions(
infile=infile,
outfile=outfile,
)
def main():
options = parse_cli_args(sys.argv)
src: str = ""
if (options.infile == "-"):
for line in sys.stdin:
src += line
else:
with open(options.infile, "r") as f:
src = f.read()
result = assemble(src, options.infile)
with open(options.outfile, "wb") as f:
f.write(result.program)
pad_binary(options.outfile, 64 * 1024)
print(f"Wrote 64 KB to {options.outfile} ({len(result.program)} B without padding)")
dbg_outfile_path = options.outfile + ".dbg"
with open(dbg_outfile_path, "w") as f:
for i in range(32 * 1024): # 32K words
line = f"0x{i:>04x};"
if i not in result.dbg_source_table:
continue
dbg_source_info = result.dbg_source_table[i]
line += f"{dbg_source_info.src_file}:{dbg_source_info.line_num};{dbg_source_info.expanded_text};{dbg_source_info.original_text};"
if i in result.dbg_label_table:
line += f"{';'.join(result.dbg_label_table[i])}"
f.write(line + "\n")
if __name__ == "__main__":
main()
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