LCOM1920-T02G10

#ifndef _IPC_CONST_H

#define _IPC_CONST_H

#include <machine/ipcconst.h>

 /* System call numbers that are passed when trapping to the kernel. */

#define SEND                   1        /* blocking send */

#define RECEIVE                   2        /* blocking receive */

#define SENDREC                    3          /* SEND + RECEIVE */

#define NOTIFY                   4        /* asynchronous notify */

#define SENDNB             5    /* nonblocking send */

#define MINIX_KERNINFO     6    /* request kernel info structure */

#define SENDA                   16        /* asynchronous send */

#define IPCNO_HIGHEST        SENDA

/* Check that the message payload type doesn't grow past the maximum IPC payload size.

 * This is a compile time check. */

#define _ASSERT_MSG_SIZE(msg_type) \

    typedef int _ASSERT_##msg_type[/* CONSTCOND */sizeof(msg_type) == 56 ? 1 : -1]

/* Macros for IPC status code manipulation. */

#define IPC_STATUS_CALL_SHIFT        0

#define IPC_STATUS_CALL_MASK        0x3F

#define IPC_STATUS_CALL(status)        \

        (((status) >> IPC_STATUS_CALL_SHIFT) & IPC_STATUS_CALL_MASK)

#define IPC_STATUS_CALL_TO(call) \

        (((call) & IPC_STATUS_CALL_MASK) << IPC_STATUS_CALL_SHIFT)

#define IPC_FLG_MSG_FROM_KERNEL        1 /* this message originated in the kernel on

                                     behalf of a process, this is a trusted

                                     message, never reply to the sender

                                 */

#define IPC_STATUS_FLAGS_SHIFT        16

#define IPC_STATUS_FLAGS(flgs)        ((flgs) << IPC_STATUS_FLAGS_SHIFT)

#define IPC_STATUS_FLAGS_TEST(status, flgs)        \

                (((status) >> IPC_STATUS_FLAGS_SHIFT) & (flgs))

#endif /* IPC_CONST_H */