gdb/rdi-share/chanpriv.h

   1 /*
   2  * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
   3  *
   4  * This software may be freely used, copied, modified, and distributed
   5  * provided that the above copyright notice is preserved in all copies of the
   6  * software.
   7  */
   8
   9 /* -*-C-*-
  10  *
  11  * $Revision$
  12  *     $Date$
  13  *
  14  *
  15  *   Project: ANGEL
  16  *
  17  *     Title: Private header for channels implementations
  18  */
  19
  20 #ifndef angel_chanpriv_h
  21 #define angel_chanpriv_h
  22
  23 /*
  24  * This describes the internal structure and flags for a channels packet.
  25  */
  26
  27 /* byte positions within channel packet */
  28 #define CF_CHANNEL_BYTE_POS  0
  29 #define CF_HOME_SEQ_BYTE_POS 1
  30 #define CF_OPPO_SEQ_BYTE_POS 2
  31 #define CF_FLAGS_BYTE_POS    3
  32 #define CF_DATA_BYTE_POS     4
  33
  34 /* flags for FLAGS field */
  35 #define CF_RELIABLE  (1 << 0)    /* use reliable channels protocol */
  36 #define CF_RESEND    (1 << 1)    /* this is a renegotiation packet */
  37 #define CF_HEARTBEAT (1 << 2)    /* heartbeat packet - prod target into sync */
  38
  39 /* byte positions within buffer */
  40 #define CB_LINK_BYTE_POS        0   /* the link pointer */
  41 #define CB_CHAN_HEADER_BYTE_POS 4   /* the channel frame starts here */
  42
  43 /* macro to get buffer position of packet component */
  44 #define CB_PACKET(x) (CB_CHAN_HEADER_BYTE_POS + (x))
  45
  46 /* byte offset of packet data within buffer */
  47 #define CB_CHAN_DATA_BYTE_POS   (CB_PACKET(CF_DATA_BYTE_POS))
  48
  49 /* access the link in a buffer, where b is byte pointer to buffer */
  50 #define CB_LINK(b) ((p_Buffer)(&(b)[0]))
  51
  52 #define invalidChannelID(chan)  (((int)(chan)) < 0 || \
  53                                  (chan) >= CI_NUM_CHANNELS)
  54
  55 #endif /* ndef angel_chanpriv_h */
  56
  57 /* EOF chanpriv.h */