Mercurial > hg > Members > kono > nitros9-code
annotate defs/pipedefs.l2v3 @ 489:c9cad71c4605
runb.asm now incorporates both 6809 and 6309 versions, Makefile reflects change
| author | boisy |
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| date | Wed, 09 Oct 2002 14:44:30 +0000 |
| parents | c07686556109 |
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1 ifeq PIPEDEFS |
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3 PIPEDEFS set 1 |
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| 0 | 5 opt -l |
| 6 ttl OS9 Level 2 Pipe Definitions | |
| 7 | |
| 8 * | |
| 9 * Copyright 1988 by Microware Systems Corporation | |
| 10 * All Rights Reserved | |
| 11 * | |
| 12 * Named pipe equates by Burke & Burke. | |
| 13 * All rights assigned to Microware Systems Corporation. | |
| 14 * | |
| 15 * This file contains proprietary information of Microware Systems | |
| 16 * Corporation. Persons accessing this file will be held strictly | |
| 17 * accountable for their use of the information herein. | |
| 18 * | |
| 19 | |
| 20 * | |
| 21 * OS9 Level 2 Pipe Definitions | |
| 22 * | |
| 23 * Modification History | |
| 24 * -------------------- | |
| 25 * | |
| 26 * Date Who Description | |
| 27 * -------- --- ----------------------------------------- | |
| 28 * 12/03/88 cjb Coded from new PIPEMAN comments | |
| 29 * | |
| 30 | |
| 31 * | |
| 32 * IOMan equates duplicated for PipeMan use | |
| 33 * | |
| 34 | |
| 35 NPATHS set 16 ;Maximum local paths per task -- must match IOMan | |
| 36 NameMax set 29 ;Maximum length of a file name | |
| 37 | |
| 38 * | |
| 39 * Device Driver Static Storage Layout | |
| 40 * | |
| 41 org V.User | |
| 42 V.List rmb 2 ;Pointer to 1st pipe's pipe buffer | |
| 43 PManMem equ . ;Device driver memory (drive table equivalent) | |
| 44 | |
| 45 * | |
| 46 * Pipe Buffer Data Structure | |
| 47 * | |
| 48 org 0 | |
| 49 PP.PD rmb 2 ;Pointer to shared path descriptor | |
| 50 PP.Next rmb 2 ;Pointer to next pipe buffer in system map | |
| 51 PP.Prev rmb 2 ;Pointer to previous pipe buffer in system map | |
| 52 PP.Rsrv rmb 2 ;Reserved | |
| 53 PP.Data equ . ;Data buffer begins at this offset | |
| 54 | |
| 55 * | |
| 56 * Unique Path Descriptor Variables | |
| 57 * | |
| 58 org PD.FST | |
| 59 *** PP.Read must have bit 4 clear; PP.Writ must be PP.Read XOR 4 | |
| 60 PD.Read equ . | |
| 61 PD.RPID rmb 1 ;Process ID of reader waiting on signal | |
| 62 PD.RCT rmb 1 ;Number of blocked readers | |
| 63 PD.RSIG rmb 1 ;Signal to send reader | |
| 64 PD.REOR rmb 1 ;Read EOR character | |
| 65 PD.Writ equ . | |
| 66 PD.WPID rmb 1 ;Process ID of writer waiting on signal | |
| 67 PD.WCT rmb 1 ;Number of blocked writers | |
| 68 PD.WSIG rmb 1 ;Signal to send writer | |
| 69 PD.WEOR rmb 1 ;Write EOR character (dummy) | |
| 70 *** End of special section | |
| 71 PD.End rmb 2 ;Pointer to end of pipe buffer | |
| 72 PD.NxtI rmb 2 ;Next in pointer | |
| 73 PD.NxtO rmb 2 ;Next out pointer | |
| 74 PD.RFlg rmb 1 ;"Ready" flag | |
| 75 PD.Wrtn rmb 1 ;"Written" flag | |
| 76 PD.BCnt rmb 2 ;# queue elements currently bufered | |
| 77 PD.Own rmb 1 ;Process ID of pipe original creator | |
| 78 PD.Keep rmb 1 ;Non-zero if pipe has been kept open artificailly | |
| 79 PD.QSiz rmb 2 ;Max. elements in queue (copied from OPT section) | |
| 80 | |
| 81 * | |
| 82 * Path descriptor option section | |
| 83 * | |
| 84 * Note that PD.Name overlaps with the last byte of PD.ECnt. | |
| 85 * PD.ECnt is copied to PD.QSiz as part of OPEN or CREATE, | |
| 86 * to make room for the pipe name. | |
| 87 * | |
| 88 org (PD.OPT+1) | |
| 89 PD.ESiz rmb 1 ;Size of each queue element | |
| 90 PD.ECnt rmb 2 ;Max. elements in queue (initial position) | |
| 91 org (PD.OPT+3) | |
| 92 PD.Name rmb NameMax ;Name buffer for named pipe. | |
| 93 | |
| 94 * | |
| 95 * Device Descriptor definitions | |
| 96 * | |
| 97 IT.PDC equ $12 ;Pipe device class (like IT.DTP, IT.DVC) | |
| 98 org IT.PDC | |
| 99 rmb 1 ;Leave room for device class | |
| 100 IT.ESiz rmb 1 ;Size of each queue element | |
| 101 IT.ECnt rmb 2 ;Max. elements in queue (initial position) | |
| 102 | |
| 103 * End of pipedefs | |
| 104 | |
| 105 opt l | |
| 106 | |
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107 endc |
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