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TOPS-20_V6.1_DECnetSrc_7-23-85
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mcb/xpt/xptupd.lst
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XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 1
30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (1)
; 0001 module XPTUPD (
; 0002 IDENT = 'X01110'
; 0003 ) =
; 0004 begin
; 0005
; 0006 !
; 0007 ! COPYRIGHT (c) 1980, 1981, 1982
; 0008 ! DIGITAL EQUIPMENT CORPORATION
; 0009 ! Maynard, Massachusetts
; 0010 !
; 0011 ! This software is furnished under a license and may be used
; 0012 ! and copied only in accordance with the terms of such license
; 0013 ! and with the inclusion of the above copyright notice. This
; 0014 ! software or any other copies thereof may not be provided or
; 0015 ! otherwise made available to any other person. No title to
; 0016 ! and ownership of the software is hereby transferred.
; 0017 !
; 0018 ! The information in this software is subject to change
; 0019 ! without notice and should not be construed as a commitment
; 0020 ! by DIGITAL EQUIPMENT CORPORATION.
; 0021 !
; 0022 ! DIGITAL assumes no responsibility for the use or reliability
; 0023 ! of its software on equipment which is not supplied by
; 0024 ! DIGITAL.
; 0025 !
; 0026
; 0027 !++
; 0028 ! FACILITY: Transport
; 0029 !
; 0030 ! ABSTRACT:
; 0031 !
; 0032 ! Transport update module; responsible for the propagation of
; 0033 ! routing messages.
; 0034 !
; 0035 ! ENVIRONMENT: MCB
; 0036 !
; 0037 ! AUTHOR: L. Webber , CREATION DATE: 20-Jul-79
; 0038 !
; 0039 ! MODIFIED BY:
; 0040 !
; 0041 ! L. Webber, 20-Jul-79 : VERSION 01
; 0042 !
; 0043 ! 1.01 L. Webber, 23-Oct-79
; 0044 ! Rewrote routines UPDTIM and UPDFMT
; 0045 !
; 0046 ! 1.02 L. Webber, 1-Apr-80
; 0047 ! Modified Transport data base structure; added
; 0048 ! Node and Line sub-data-bases.
; 0049 !
; 0050 ! 1.03 L. Webber, 30-Jun-80
; 0051 ! Modify to use MCBLIB macros
; 0052 !
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 2
X01110 30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (1)
; 0053 ! 1.04 L. Webber, 21-Nov-80
; 0054 ! Fix UPDTIM to clear SRM after sending a message
; 0055 !
; 0056 ! 1.05 L. Webber, 11-Dec-80
; 0057 ! Modify to support MCB 3.1
; 0058 !
; 0059 ! 1.06 L. Webber, 9-Feb-81
; 0060 ! Change references to SNDBUF to CALL$E
; 0061 !
; 0062 ! 1.07 L. Webber, 9-Feb-81
; 0063 ! Change back to direct call; an interface routine has been added.
; 0064 !
; 0065 ! 1.08 L. Webber, 10-Feb-81
; 0066 ! This module is now in XPE; SNDBUF now becomes _SNDBUF and CALL$,
; 0067 ! while UPDTIM itself becomes CALL$.
; 0068 !
; 0069 ! 1.09 L. Webber, 3-Jun-81
; 0070 ! Allocate a buffer of a specific size rather than an LDB.
; 0071 !
; 0072 ! 1.10 A. Peckham, 22-Apr-82
; 0073 ! Eliminate GETLINE, GETNODE references.
; 0074 !
; 0075 ! 1.11 A. Peckham, 23-Sep-82
; 0076 ! Send shortened routing messages to nodes with fences.
; 0077 !
; 0078 !--
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 3
X01110 30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (2)
; 0079
; 0080 !
; 0081 ! INCLUDE FILES:
; 0082 !
; 0083
; 0084 require 'XPTMAC';
; 0182
; 0183 !
; 0184 ! TABLE OF CONTENTS
; 0185 !
; 0186
; 0187 forward routine
; 0188 UPDFMT: LINKAGE_DB_CCB novalue;
; 0189
; 0190 !
; 0191 ! MACROS:
; 0192 !
; 0193
; 0194 !
; 0195 ! EQUATED SYMBOLS:
; 0196 !
; 0197
; 0198 !
; 0199 ! OWN STORAGE:
; 0200 !
; 0201
; 0202 !
; 0203 ! EXTERNAL REFERENCES:
; 0204 !
; 0205
; 0206 external routine
; 0207 _SNDBUF: CALL$ novalue;
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 4
X01110 30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (3)
; 0208 routine UPDFMT (LINEb,CCB): LINKAGE_DB_CCB novalue =
; 0209
; 0210 !++
; 0211 ! FUNCTIONAL DESCRIPTION:
; 0212 !
; 0213 ! Formats and sends a routing message over the specified line.
; 0214 !
; 0215 ! FORMAL PARAMETERS
; 0216 !
; 0217 ! LINEb Line over which to send the message
; 0218 ! CCB LDB in which to build the routing message
; 0219 !
; 0220 ! IMPLICIT INPUTS
; 0221 !
; 0222 ! Minhop,Mincost.
; 0223 !
; 0224 ! ROUTINE VALUE:
; 0225 ! COMPLETION CODES:
; 0226 !
; 0227 ! NONE.
; 0228 !
; 0229 ! SIDE EFFECTS:
; 0230 !
; 0231 ! NONE.
; 0232 !
; 0233 !--
; 0234
; 0235 begin
; 0236 map CCB: ref block field (C_XPT_fields);
; 0237 require 'XPTSYM';
; 0274 pointer PTR;
; 0275 local NO_NODES,SUM;
; 0276
; 0277 begin ! Get number of nodes to process
; 0278 bind MXA = NO_NODES: ref vector;
; 0279
; 0280 if (MXA = .NODEmaximum_address_vector) neqa 0
; 0281 then begin
; 0282 if (MXA = .MXA [.Nid - 1]) neq 0
; 0283 then begin
; 0284 if .MXA gtr NN
; 0285 then MXA = NN;
; 0286 end
; 0287 else MXA = NN;
; 0288 end
; 0289 else MXA = NN;
; 0290 end;
; 0291 CCB[C_XPT_TYPE] = UPDATEcode; ! Move buffer type into CCB
; 0292 CCB[C_XPT_SUBTYPE] = UPDATEcode; ! (subtype also)
; 0293 MAPBUF(.CCB,PTR); ! Map to buffer and get address
; 0294 putb(7,PTR); ! Put in control flags
; 0295 putb(.(Tid)<0,8>,PTR); ! Put in source node (us)
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 5
X01110 30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (3)
; 0296 putb(.(Tid)<8,8>,PTR);
; 0297 SUM = 0; ! Initialize checksum
; 0298 $XPT_for_each_NODEb_do_begin
; 0299 local WORK;
; 0300 if .NODEaddress gtr .NO_NODES then exitloop;
; 0301 WORK = .Minhop^Hop_P+.Mincost^Cost_P; ! hop/cost word
; 0302 putb(.WORK<0,8>,PTR); ! and add word
; 0303 putb(.WORK<8,8>,PTR);
; 0304 checksum(SUM,.WORK); ! into checksum
; 0305 $XPT_next_NODEb_end;
; 0306 putb(.SUM<0,8>,PTR); ! Store checksum into message
; 0307 putb(.SUM<8,8>,PTR);
; 0308 CCB[C_CNT] = ch$diff(.PTR,.CCB[C_ADDR]);! Calculate message length;
; 0309 CCB[C_XPT_ALLOCATION] = .CCB[C_CNT]; ! also store it as buffer length
; 0310 end; !End of UPDFMT
.TITLE XPTUPD
.IDENT /X01110/
.GLOBL .SNDBUF, .CRDAT, KISAR6
.SBTTL UPDFMT
000000 .PSECT $CODE$, RO
000000 004167 000000G ; UPDFMT
U.1: JSR R1,$SAVE5 ; 0208
000004 010446 MOV R4,-(SP)
000006 016702 000002G MOV .CRDAT+2,R2 ; 0280
000012 012700 000016 MOV #16,R0 ; 0284
000016 060200 ADD R2,R0
000020 016201 000024 MOV 24(R2),R1 ; *,MXA 0280
000024 001413 BEQ 1$
000026 016505 000004 MOV 4(R5),R5 ; *(LINEB),* 0282
000032 006305 ASL R5
000034 060105 ADD R1,R5 ; MXA,*
000036 016501 177776 MOV -2(R5),R1 ; *,MXA
000042 001404 BEQ 1$
000044 011004 MOV (R0),R4 ; 0284
000046 020104 CMP R1,R4 ; MXA,*
000050 003403 BLE 3$
000052 000401 BR 2$ ; 0285
000054 011004 1$: MOV (R0),R4 ; 0289
000056 010401 2$: MOV R4,R1 ; *,MXA
000060 011600 3$: MOV (SP),R0 ; 0291
000062 112760 000001 000032 MOVB #1,32(R0)
000070 016067 000016 000000G MOV 16(R0),KISAR6 ; 0293
000076 016005 000020 MOV 20(R0),R5 ; *,PTR
000102 112725 000007 MOVB #7,(R5)+ ; *,PTR 0294
000106 116225 000056 MOVB 56(R2),(R5)+ ; *,PTR 0295
000112 116225 000057 MOVB 57(R2),(R5)+ ; *,PTR 0296
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 6
X01110 30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (3)
000116 005000 CLR R0 ; SUM 0297
000120 016202 000012 MOV 12(R2),R2 ; *,NODEB
000124 010403 MOV R4,R3 ; *,$XPT$NODEB.CNT
000126 001423 BEQ 5$
000130 026201 000002 4$: CMP 2(R2),R1 ; *(NODEB),NO.NODES 0300
000134 003020 BGT 5$
000136 016204 000004 MOV 4(R2),R4 ; *(NODEB),* 0301
000142 072427 000012 ASH #12,R4
000146 066204 000006 ADD 6(R2),R4 ; *(NODEB),*
000152 110425 MOVB R4,(R5)+ ; WORK,PTR 0302
000154 010446 MOV R4,-(SP) ; WORK,* 0303
000156 000316 SWAB (SP)
000160 112625 MOVB (SP)+,(R5)+ ; *,PTR
000162 060400 ADD R4,R0 ; WORK,SUM 0304
000164 010004 MOV R0,R4 ; SUM,*
000166 005500 ADC R0 ; SUM
000170 062702 000010 ADD #10,R2 ; *,NODEB
000174 077323 SOB R3,4$ ; $XPT$NODEB.CNT,* 0000
000176 110025 5$: MOVB R0,(R5)+ ; SUM,PTR 0306
000200 010001 MOV R0,R1 ; SUM,* 0307
000202 000301 SWAB R1
000204 110125 MOVB R1,(R5)+ ; *,PTR
000206 012600 MOV (SP)+,R0 ; 0308
000210 010560 000022 MOV R5,22(R0) ; PTR,*
000214 010001 MOV R0,R1
000216 166160 000020 000022 SUB 20(R1),22(R0)
000224 016160 000022 000034 MOV 22(R1),34(R0) ; 0309
000232 000207 RTS PC ; 0208
; Routine Size: 78 words, Routine Base: $CODE$ + 0000
; Maximum stack depth per invocation: 8 words
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 7
X01110 30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (4)
; 0311 global routine UPDTIM: CALL$ novalue =
; 0312
; 0313 !++
; 0314 ! FUNCTIONAL DESCRIPTION:
; 0315 !
; 0316 ! Processes calls from the Transport timer routine.
; 0317 ! If the Update_clock has expired, sends a routing message
; 0318 ! on each line with Srm set.
; 0319 !
; 0320 ! FORMAL PARAMETERS
; 0321 !
; 0322 ! NONE.
; 0323 !
; 0324 ! IMPLICIT INPUTS
; 0325 !
; 0326 ! Update_clock, Srm, UPDATEquota, NEXTline
; 0327 !
; 0328 ! ROUTINE VALUE:
; 0329 ! COMPLETION CODES:
; 0330 !
; 0331 ! NONE.
; 0332 !
; 0333 ! SIDE EFFECTS:
; 0334 !
; 0335 ! If Update_clock is expired, Update_clock is reset.
; 0336 ! If a routing message is sent on a line, Srm is cleared for the line.
; 0337 !
; 0338 !--
; 0339
; 0340 begin
; 0341 require 'XPTSYM';
; 0378 label LINE_CHECKER;
; 0379 local CCB,LIN;
; 0380
; 0381 LIN = .NEXTline; ! Start scan at end of last time's
; 0382
; 0383 do
; 0384 LINE_CHECKER:
; 0385 begin !Scan each line
; 0386 local LINEb: ref LINEblock;
; 0387 LINEb = $XPT_GET_LINE_DB(.LIN); ! Address line data base entry
; 0388
; 0389 if .LINEstate neq RU then leave LINE_CHECKER;
; 0390
; 0391 if .Nty neq Full then leave LINE_CHECKER;
; 0392
; 0393 if not .Srm then leave LINE_CHECKER;
; 0394
; 0395 if .UPDATEquota eql 0 then exitloop; ! If no congestion
; 0396 ! and
; 0397 if not $MCB_GET_CCB_AND_BUFFER (NN*2 + 5, CCB) ! resource available,
; 0398 then exitloop;
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 8
X01110 30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (4)
; 0399
; 0400 UPDATEquota = .UPDATEquota - 1; ! Update the Update quota
; 0401 UPDFMT(.LINEb,.CCB); ! build the routing message
; 0402 _SNDBUF(.LINEb,.CCB); ! and send it out
; 0403 Srm = false;
; 0404 end
; 0405 while
; 0406 begin
; 0407 LIN = .LIN + 1; ! Try next line,
; 0408 if .LIN gtr NLN then LIN = 1; ! wrapping around if necessary
; 0409 .LIN neq .NEXTline
; 0410 end;
; 0411
; 0412 NEXTline = .LIN;
; 0413 end; !End of UPDTIM
.GLOBL GTLINE, $CBBGT
.SBTTL UPDTIM
000000 016700 000002G UPDTIM::MOV .CRDAT+2,R0 ; 0381
000004 116002 000076 MOVB 76(R0),R2 ; *,LIN
000010 010200 1$: MOV R2,R0 ; LIN,* 0387
000012 004767 000000G JSR PC,GTLINE
000016 010005 MOV R0,R5 ; *,LINEB
000020 121527 000010 CMPB (R5),#10 ; LINEB,* 0389
000024 001007 BNE 2$
000026 126527 000002 000002 CMPB 2(R5),#2 ; *(LINEB),* 0391
000034 001003 BNE 2$
000036 032715 020000 BIT #20000,(R5) ; *,LINEB 0393
000042 001002 BNE 3$
000044 024646 2$: CMP -(SP),-(SP)
000046 000440 BR 4$
000050 016700 000002G 3$: MOV .CRDAT+2,R0 ; 0395
000054 105760 000100 TSTB 100(R0)
000060 001452 BEQ 6$
000062 010001 MOV R0,R1 ; XPTDB,* 0397
000064 016101 000016 MOV 16(R1),R1
000070 006301 ASL R1
000072 062701 000005 ADD #5,R1
000076 004767 000000G JSR PC,$CBBGT
000102 103441 BCS 6$
000104 010403 MOV R4,R3 ; $MCB$R4,CCB
000106 016700 000002G MOV .CRDAT+2,R0 ; 0398
000112 105360 000100 DECB 100(R0) ; 0400
000116 004767 177422 JSR PC,U.1 ; 0401
000122 010346 MOV R3,-(SP) ; CCB,* 0402
000124 010546 MOV R5,-(SP) ; LINEB,*
000126 012746 000002 MOV #2,-(SP)
000132 012746 000000G MOV #.SNDBUF,-(SP)
000136 004767 000000G JSR PC,$CALL
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 9
X01110 30-Dec-1982 21:49:52 NETPKG:<XPT>XPTUPD.BLI.8 (4)
000142 022626 CMP (SP)+,(SP)+
000144 042715 020000 BIC #20000,(R5) ; *,LINEB 0403
000150 022626 4$: CMP (SP)+,(SP)+ ; 0383
000152 005202 INC R2 ; LIN 0407
000154 016700 000002G MOV .CRDAT+2,R0 ; 0408
000160 020260 000022 CMP R2,22(R0) ; LIN,*
000164 003402 BLE 5$
000166 012702 000001 MOV #1,R2 ; *,LIN
000172 016700 000002G 5$: MOV .CRDAT+2,R0 ; 0409
000176 116001 000076 MOVB 76(R0),R1
000202 020201 CMP R2,R1 ; LIN,*
000204 001301 BNE 1$
000206 016700 000002G 6$: MOV .CRDAT+2,R0 ; 0410
000212 110260 000076 MOVB R2,76(R0) ; LIN,* 0412
000216 000207 RTS PC ; 0311
; Routine Size: 72 words, Routine Base: $CODE$ + 0234
; Maximum stack depth per invocation: 5 words
; 0414
; 0415 end !End of module XPTUPD
; 0416 eludom
; OTS external references
.GLOBL $SAVE5, $CALL
; PSECT SUMMARY
;
; Psect Name Words Attributes
; $CODE$ 150 RO , I , LCL, REL, CON
; LIBRARY STATISTICS
;
; -------- Symbols -------- Blocks
; File Total Loaded Percent Read
;
; NETPKG:<MCB>XPORTX.L16.15 599 0 0 0
; NETPKG:<MCB>MCBLIB.L16.15 372 30 8 0
; NETPKG:<MCB>NMXLIB.L16.13 200 0 0 0
; NETPKG:<XPT>XPTLIB.L16.3 510 174 34 0
XPTUPD 25-Jan-1983 09:59:08 TOPS-20 Bliss-16 2A(530) Page 10
X01110
; Size: 150 code + 0 data words
; Run Time: 00:04.9
; Elapsed Time: 00:17.5
; Memory Used: 39 pages
; Compilation Complete
ADDRESS 136+ 138+ 139+ 141+ 142+ 144+ 145+ 151+ 152+ 155+ 156+ 157+
BPT 165+# 177+#
BUFCHK 169+ 170+# 179+ 180+#
CALL$ 207 311#
CCB 208 236 291# 292# 293 308# 309# 379 397 401 402
CHECKSUM 304
CHKBUF 172+* 173+
COST_P 301
C_ADDR 308
C_CNT 308 309
C_XPT_ALLOCATION 309
C_XPT_FIELDS 236
C_XPT_SUBTYPE 292
C_XPT_TYPE 291
FALSE 403
FULL 391
GETQ 136+#
GETW 115+# 138+ 139+
HOP_P 301
I 160+ 162+
J 160+ 162+
LIN 379 381# 387 407# 408# 409 412
LINEBLOCK 264+ 368+ 386
LINEB 208 262+ 264+ 366+ 368+ 386 387# 401 402
LINESTATE 389
LINE_CHECKER 378 384 389 391 393
LINKAGE_DB_CCB 188 208#
M 160+ 161+
MAPBUF 293
MATRIX 160+# 162+
MCB$GAW_PROCESS_DATA_BASE 267+ 268+ 271+ 371+ 372+ 375+
MINCOST 301
MINHOP 301
MXA 278# 280# 282# 284 285# 287# 289#
N 160+ 161+
NEXTLINE 381 409 412#
NID 282
NL 160+ 162+
NLN 408
NN 284 285 287 289 397
NODEADDRESS 300
NODEBLOCK 259+ 363+
NODEB 257+ 259+ 361+ 363+
NODEMAXIMUM_ADDRESS_VECTOR 280
NOP 177+ 178+ 180+
NO_LINEB 263+ 367+
NO_NODEB 258+ 362+
NO_NODES 275 278 300
NTY 391
POINTER 274
PTR 115+ 118+ 119+ 122+ 125+ 126+ 132+ 133+ 136+ 138+ 139+ 141+
144+ 145+ 146+ 147+ 151+ 152+ 274 293 294 295 296 302
303 306 307 308
PUTB 294 295 296 302 303 306 307
PUTQ 141+#
PUTW 122+# 151+ 152+
RU 389
SRM 393 403#
SUM 275 297# 304 306 307
TID 295 296
UNIT 160+# 161+ 162+
UPDATECODE 291 292
UPDATEQUOTA 395 400#
UPDFMT 188 208* 401
UPDTIM 311*
VALUE 122+ 123+ 125+ 126+ 131+
WORK 299 301# 302 303 304
X 117+ 118+# 119+# 120+ 130+ 131+# 132+ 133+
XPTDBBLOCK 273+ 377+
XPTDB 270+ 271+# 272+ 374+ 375+# 376+
XPTUPD 1#
ZEROQ 155+#
_SNDBUF 207* 402
$MCB_GET_CCB_AND_BUFFER 397
$XPT_FOR_EACH_NODEB_DO_BEGIN 298
$XPT_GET_LINE_DB 387
$XPT_NEXT_NODEB_END 305
%CTCE 123+ 142+
%REMAINING 167+