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PDP-10 Archives
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BB-R595B-SM_11-9-85
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mcb/xpt/xpe16.b16
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module XPE16 (
IDENT = 'X01140'
) =
begin
!
! COPYRIGHT (c) 1980, 1981, 1982
! DIGITAL EQUIPMENT CORPORATION
! Maynard, Massachusetts
!
! This software is furnished under a license and may be used
! and copied only in accordance with the terms of such license
! and with the inclusion of the above copyright notice. This
! software or any other copies thereof may not be provided or
! otherwise made available to any other person. No title to
! and ownership of the software is hereby transferred.
!
! The information in this software is subject to change
! without notice and should not be construed as a commitment
! by DIGITAL EQUIPMENT CORPORATION.
!
! DIGITAL assumes no responsibility for the use or reliability
! of its software on equipment which is not supplied by
! DIGITAL.
!
!++
! FACILITY: Transport
!
! ABSTRACT:
!
! 16-bit or RSX-11M dependent routines for transport
!
! ENVIRONMENT: MCB
!
! AUTHOR: L. Webber , CREATION DATE: 20-Jul-79
!
! MODIFIED BY:
!
! 20-Jul-79 : VERSION 1.00
!
! 1.01 L. Webber, 21-Oct-80
! Change C_BUF and C_BUFA references to C_BIAS and C_ADDR
!
! 1.02 L. Webber, 11-Dec-80
! Modify to support MCB 3.1
!
! 1.03 L. Webber, 11-Feb-81
! Made XPT16 into three parallel modules: XPT16, TLI16 and XPE16.
! This mod. also comprises the addition of several new entry points
! over the last year. This is the last of the identically numbered
! mods. for the three -16 modules.
!
! 1.04 L. Webber, 11-Feb-81
! Delete entries GET_EX, GET_BLK, GETSDB, RETSDB, $CDBV, GETXDB and
! $CBDMG from the XPE -16 module.
!
! 1.05 L. Webber, 23-Feb-81
! Fix LOG_EVENT class and event buffer specification.
!
! 1.06 L. Webber, 25-Feb-81
! Move $CDBV and $CBDMG over from XPT16
!
! 1.07 L. Webber, 27-Feb-81
! Make $CDBV and $CBDMG CALL$
!
! 1.08 L. Webber, 16-Mar-81
! Add UNSPAWN routine
!
! 1.09 L. Webber, 3-Apr-81
! Signal the ENTITY in LOG_EVENT.
!
! 1.10 L. Webber, 30-Jun-81
! Fix UNSPAWN to return a buffer of the right length.
!
! 1.11 L. Webber, 24-Sep-81
! Take out routines EP_REASON, EP_EXNODE.
!
! 1.12 L. Webber, 24-Sep-81
! Take out reference to Event_Buffer in LOG_EVENT.
!
! 1.13 A. Peckham, 19-Apr-82
! Add XPT$GET_LINE_DB and XPT$GET_NODE_DB routines.
! Move $CBDMG and $CDBV back to XPT16.
!
! 1.14 A. Peckham, 6-May-82
! Eliminate GETLINE, GETNODE, LOG_EVENT, MAPIN, RLS_BLK.
!
!--
!
! INCLUDE FILES:
!
require 'XPTMAC';
!
! TABLE OF CONTENTS
!
forward routine
XPT$GET_LINE_DB: XPT$LKG_NUM,
XPT$GET_NODE_DB: XPT$LKG_NUM;
!
! MACROS:
!
!
! EQUATED SYMBOLS:
!
!
! OWN STORAGE:
!
!
! EXTERNAL REFERENCES:
!
global routine XPT$GET_LINE_DB (LINE) : XPT$LKG_NUM =
!++
! FUNCTIONAL DESCRIPTION:
!
! Returns the base address of the line data base entry for
! the specified line
!
! FORMAL PARAMETERS
!
! LINE Line number whose data base entry is to be
! located
!
! IMPLICIT INPUTS
!
! XPTDB
!
! ROUTINE VALUE:
!
! The address of the line data base entry for .LINE
!
! SIDE EFFECTS:
!
! NONE.
!
!--
begin
require 'XPTSYM';
LINE = .LINE - 1;
if .LINE lssu NLN
then
begin
LINE = .LINE*LINElength;
.XPTDB[XPTlindb] + .LINE
end
else
0
end; !End of XPT$GET_LINE_DB
global routine XPT$GET_NODE_DB (NODE) : XPT$LKG_NUM =
!++
! FUNCTIONAL DESCRIPTION:
!
! Returns the base address of the node data base entry for
! the specified node number
!
! FORMAL PARAMETERS
!
! NODE Node number of the node whose data base is to be
! located
!
! IMPLICIT INPUTS
!
! XPTDB
!
! ROUTINE VALUE:
!
! Address of the node data base entry for .NODE
!
! SIDE EFFECTS:
!
! NONE.
!
!--
begin
require 'XPTSYM';
NODE = .NODE - 1;
if .NODE lssu NN
then
begin
NODE = .NODE*NODElength;
.XPTDB[XPTnoddb] + .NODE
end
else
0
end; !End of XPT$GET_NODE_DB
global routine UNSPAWN(CCB): novalue =
!++
! FUNCTIONAL DESCRIPTION:
!
! Untangles a CCB spawned by Transport:
!
! 1. If the CCB has a buffer of its own, release it.
! 2. If the pass-through CCB (the one the spawned CCB points to)
! has had its buffer pointer adjusted, un-adjust it.
! 3. Release the spawned CCB.
!
! FORMAL PARAMETERS
!
! CCB Address of the spawned CCB.
!
! IMPLICIT INPUTS
!
! NONE.
!
! ROUTINE VALUE:
! COMPLETION CODES:
!
! NONE.
!
! SIDE EFFECTS:
!
! NONE.
!
!--
begin
map CCB: ref block field(C_XPT_fields);
bind CCB_P = .CCB[C_STK]: block field(C_fields);
local ADJ;
if ((ADJ=.CCB[C_XPT_ADJUST]) neq 0) then begin ! Nonzero adjustment factor:
CCB_P[C_ADDR] = ch$plus(.CCB_P[C_ADDR],-.ADJ); ! readjust pass-through
CCB_P[C_CNT] = .CCB_P[C_CNT] + .ADJ; ! buffer descriptor
end;
if ((.CCB[C_CHN] neq 0) ! If the spawned CCB
and (.CCB[C_BIAS] neq 0)) then ! has an SDB of
$MCB_RETURN_CCB_AND_BUFFER ! its own, release
(.CCB[C_XPT_ALLOCATION],.CCB) ! them both
else $MCB_RETURN_CCB(.CCB); ! Otherwise, just release the CCB
end; !End of UNSPAWN
end !End of module XPE16
eludom