HelenOS sources

UDEBUG_M_NAME_READ  483 kernel/generic/src/udebug/udebug_ipc.c 	case UDEBUG_M_NAME_READ:
UDEBUG_M_NAME_READ   90 uspace/lib/c/generic/udebug.c 	errno_t rc = async_req_3_3(exch, IPC_M_DEBUG, UDEBUG_M_NAME_READ,
HelenOS homepage, sources at GitHub