mirror of https://github.com/egormanga/Slang.git
51 lines
1.4 KiB
Python
Executable File
51 lines
1.4 KiB
Python
Executable File
#!/usr/bin/python3
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# SBC Disassembler
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from utils.nolog import *
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opcodes = {int(m[2], 16): m[1] for m in re.finditer(r'### (\w+).*?\n(\w+)', open(os.path.join(os.path.dirname(sys.argv[0]), 'bytecode.md')).read())}
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HASARG = 0xa0
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def dissbc(code, no_opnames=False):
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cp = 0
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codesize = len(code)
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blocklvl = 0
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while (cp < codesize):
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opcode = code[cp]; cp += 1
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opname = opcodes.get(opcode)
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if (opname == 'END'): blocklvl -= 1
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print('\t'*blocklvl, end='')
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if (opname is None): print("\033[2mUNKNOWN: %02x\033[0m" % opcode); continue
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print(f"\033[1m0x{opcode:02x}{' '+opname if (not no_opnames) else ''}\033[0m", end='')
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if (opcode > HASARG):
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arg = code[cp]; cp += 1
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print("(%d|0x%02x)" % (arg, arg), end='')
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if (opname == 'CONST'):
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const = code[cp:cp+arg]
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cp += arg
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print(':', '0x'+const.hex(), end='')
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print(' |', str().join(chr(i) if (32 <= i < 128) else '.' for i in const), end='')
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elif (opname == 'BLTIN'):
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name = bytearray()
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while (code[cp] != 0):
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name.append(code[cp]); cp += 1
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else: cp += 1
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print(':', name.decode('ascii'), end='')
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if (opname in ('IF', 'ELSE', 'CODE')):
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print(':', end='')
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blocklvl += 1
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print()
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@apmain
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@aparg('file', metavar='<file.sbc>')
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@aparg('--no-opnames', action='store_true')
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def main(cargs):
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dissbc(open(cargs.file, 'rb').read(), no_opnames=cargs.no_opnames)
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if (__name__ == '__main__'): exit(main(nolog=True), nolog=True)
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# by Sdore, 2020
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