#!/usr/bin/env python3
"""Find 32-bit bit-address constants referring to a ROM string target."""
import struct, sys

ROM_BASE = 0x07E40000

def refs(image, target_off):
    val = (ROM_BASE + target_off) << 3
    pat = struct.pack("<I", val)
    out = []
    start = 0
    while True:
        i = image.find(pat, start)
        if i < 0: break
        out.append(i)
        start = i + 1
    return out, val

if __name__ == "__main__":
    image = open(sys.argv[1], "rb").read()
    for arg in sys.argv[2:]:
        off = int(arg, 0)
        r, v = refs(image, off)
        s = image[off:off+60].split(b"\0")[0].decode("latin1", "replace")
        print(f"target 0x{off:06X} val=0x{v:08X} refs={[hex(x) for x in r]}  {s!r}")