ifdef msgb
  em msgb
fi

define msgb a 0t8192
  pf "  %10s  %8x\n", "*b_next", (*(($1) + 0x0))
  pf "  %10s  %8x\n", "*b_prev", (*(($1) + 0x4))
  pf "  %10s  %8x\n", "*b_cont", (*(($1) + 0x8))
  pf "  %10s  %8x\n", "*b_rptr", (*(($1) + 0xc))
  pf "  %10s  %8x\n", "*b_wptr", (*(($1) + 0x10))
  pf "  %10s  %8x\n", "*b_datap", (*(($1) + 0x14))
  pf "  %10s  %2x\n", "b_band", ((*(($1) + 0x18)) & 0xFF)
  pf "  %10s  %2x\n", "b_pad1", ((*(($1) + 0x19)) & 0xFF)
  pf "  %10s  %4x\n", "b_flag", ((*(($1) + 0x1a)) & 0xFFFF)
  pf "  %10s  %8x\n", "b_pad2", (*(($1) + 0x1c))
.