DIRECTORY Alloc: TYPE USING [Base, Notifier, Selector], BcdDefs: TYPE, BcdOps: TYPE USING [BcdBase, MTHandle, NameString], CommanderOps: TYPE USING [InitCommander, WaitCommands], Environment: TYPE USING [PageCount], Exec: TYPE USING [AddCommand, w], File: TYPE USING [Capability, nullCapability], FileSegment: TYPE USING [Pages, nullPages], Format: TYPE USING [NumberFormat], Heap: TYPE USING [systemZone], ListerDefs: TYPE USING [], OSMiscOps: TYPE USING [BcdCreateTime, FileError, FindFile], OutputDefs: TYPE USING [ PutChar, PutNumber, PutLongSubString, PutString, PutTime], Space: TYPE USING [ Handle, nullHandle, virtualMemory, Create, Delete, LongPointer, Map], Strings: TYPE USING [ AppendString, AppendSubString, EquivalentSubStrings, SubString, SubStringDescriptor], Symbols: TYPE USING [ bodyType, ctxType, HTIndex, HTNull, htType, ISEIndex, mdType, SENull, seType, ssType], SymbolSegment: TYPE USING [Base, extType, ltType, treeType, Tables], SymbolTable: TYPE USING [Base], Time: TYPE USING [Append, Unpack], TTY: TYPE USING [PutChar, PutDecimal, PutLine, PutOctal, PutString]; ListerRoutines: PROGRAM IMPORTS CommanderOps, Exec, Heap, OSMiscOps, OutputDefs, Space, Strings, Time, TTY EXPORTS ListerDefs = { OPEN OutputDefs; NoFile: PUBLIC SIGNAL = CODE; IncorrectVersion: PUBLIC SIGNAL = CODE; NoFGT: PUBLIC SIGNAL = CODE; NoCode: PUBLIC SIGNAL = CODE; NoSymbols: PUBLIC SIGNAL = CODE; MultipleModules: PUBLIC SIGNAL = CODE; version, creator, source: BcdDefs.VersionStamp; Dstar: BOOLEAN; filename: STRING; symbols: SymbolTable.Base; bases: PRIVATE ARRAY SymbolSegment.Tables OF Alloc.Base; SetRoutineSymbols: PUBLIC PROC [s: SymbolTable.Base] = { OPEN s.stHandle; symbase: SymbolSegment.Base _ LOOPHOLE[s.stHandle]; symbols _ s; bases[SymbolSegment.treeType] _ symbase + treeBlock.offset; bases[Symbols.seType] _ symbase + seBlock.offset; bases[Symbols.htType] _ symbase + htBlock.offset; bases[Symbols.ssType] _ symbase + ssBlock.offset; bases[Symbols.ctxType] _ symbase + ctxBlock.offset; bases[Symbols.mdType] _ symbase + mdBlock.offset; bases[Symbols.bodyType] _ symbase + bodyBlock.offset; bases[SymbolSegment.ltType] _ symbase + litBlock.offset; bases[SymbolSegment.extType] _ symbase + extBlock.offset; UpdateBases[]}; NotifyLink: TYPE = LONG POINTER TO NotifyNode; NotifyNode: TYPE = RECORD [notifier: Alloc.Notifier, link: NotifyLink]; notifyList: NotifyLink _ NIL; AddNotify: PUBLIC PROC [proc: Alloc.Notifier] = { p: NotifyLink = (Heap.systemZone).NEW[NotifyNode _ [notifier: proc, link: notifyList]]; notifyList _ p; proc[DESCRIPTOR[bases]]}; DropNotify: PUBLIC PROC [proc: Alloc.Notifier] = { p, q: NotifyLink; IF notifyList = NIL THEN RETURN; p _ notifyList; IF p.notifier = proc THEN notifyList _ p.link ELSE { DO q _ p; p _ p.link; IF p = NIL THEN RETURN; IF p.notifier = proc THEN EXIT ENDLOOP; q.link _ p.link}; (Heap.systemZone).FREE[@p]}; UpdateBases: PROC = { FOR p: NotifyLink _ notifyList, p.link UNTIL p = NIL DO p.notifier[DESCRIPTOR[bases]] ENDLOOP}; Bounds: PUBLIC PROC [table: Alloc.Selector] RETURNS [base: Alloc.Base, size: CARDINAL] = { OPEN symbols.stHandle; SELECT table FROM SymbolSegment.treeType => RETURN [bases[table], treeBlock.size]; Symbols.seType => RETURN [bases[table], seBlock.size]; Symbols.htType => RETURN [bases[table], htBlock.size]; Symbols.ssType => RETURN [bases[table], ssBlock.size]; Symbols.ctxType => RETURN [bases[table], ctxBlock.size]; Symbols.mdType => RETURN [bases[table], mdBlock.size]; Symbols.bodyType => RETURN [bases[table], bodyBlock.size]; SymbolSegment.ltType => RETURN [bases[table], litBlock.size]; SymbolSegment.extType => RETURN [bases[table], extBlock.size]; ENDCASE => ERROR}; LoadFromConfig: PUBLIC PROC [configName, moduleName: STRING] RETURNS [code, symbols, bcd: FileSegment.Pages, mti: BcdDefs.MTIndex] = { OPEN BcdDefs; configFile, codeFile, symsFile: File.Capability; bcdSpace: Space.Handle _ Space.nullHandle; code _ symbols _ FileSegment.nullPages; Dstar _ TRUE; configFile _ OSMiscOps.FindFile[configName ! OSMiscOps.FileError => {GOTO noFile}]; filename _ configName; codeFile _ symsFile _ configFile; bcd _ ReadHeader[configFile]; IF bcd # FileSegment.nullPages THEN { ENABLE UNWIND => {IF bcdSpace # Space.nullHandle THEN Space.Delete[bcdSpace]}; bcdBase: BcdOps.BcdBase; sgb, mtb, ftb: BcdDefs.Base; ssb: BcdOps.NameString; mtLimit: BcdDefs.MTIndex; mh: BcdOps.MTHandle; sfi, cfi: BcdDefs.FTIndex; ss1, ss2: Strings.SubStringDescriptor; SearchModules: PROC [test: PROC [BcdDefs.MTIndex] RETURNS [BOOLEAN]] RETURNS [BcdDefs.MTIndex] = { next: MTIndex; FOR mti _ FIRST[BcdDefs.MTIndex], next UNTIL mti = mtLimit DO IF test[mti] THEN RETURN [mti]; next _ mti + (WITH m: mtb[mti] SELECT FROM direct => SIZE[direct BcdDefs.MTRecord] + m.length*SIZE[BcdDefs.Link], indirect => SIZE[indirect BcdDefs.MTRecord], multiple => SIZE[multiple BcdDefs.MTRecord], ENDCASE => ERROR); ENDLOOP; RETURN [BcdDefs.MTNull]}; CheckModule: PROC [mti: BcdDefs.MTIndex] RETURNS [BOOLEAN] = { ss2.offset _ mtb[mti].name; ss2.length _ ssb.size[mtb[mti].name]; RETURN [Strings.EquivalentSubStrings[@ss1, @ss2]]}; bcdSpace _ MapPages[bcd]; bcdBase _ bcdSpace.LongPointer[]; ss1 _ [base: moduleName, offset: 0, length: moduleName.length]; version _ bcdBase.version; creator _ bcdBase.creator; source _ bcdBase.sourceVersion; sgb _ LOOPHOLE[bcdBase + bcdBase.sgOffset]; mtb _ LOOPHOLE[bcdBase + bcdBase.mtOffset]; mtLimit _ bcdBase.mtLimit; ssb _ LOOPHOLE[bcdBase + bcdBase.ssOffset]; ftb _ LOOPHOLE[bcdBase + bcdBase.ftOffset]; ss2.base _ @ssb.string; mti _ SearchModules[CheckModule]; IF mti = MTNull THEN SIGNAL NoCode ELSE { mh _ @mtb[mti]; Dstar _ ~mh.altoCode; cfi _ sgb[mh.code.sgi].file; IF cfi # FTSelf THEN { codeFileName: STRING _ [40]; codeSpace: Space.Handle; fileVersion: BcdDefs.VersionStamp; cfilebase: BcdOps.BcdBase; ss2.offset _ ftb[cfi].name; ss2.length _ ssb.size[ftb[cfi].name]; Strings.AppendSubString[codeFileName, @ss2]; FOR i: CARDINAL IN [0..codeFileName.length) DO IF codeFileName[i] = '. THEN EXIT; REPEAT FINISHED => Strings.AppendString[codeFileName, ".bcd"L]; ENDLOOP; codeFile _ OSMiscOps.FindFile[codeFileName ! OSMiscOps.FileError => {GO TO noCode}]; code _ [codeFile, [base: 1, pages: 1]]; codeSpace _ MapPages[code]; cfilebase _ codeSpace.LongPointer; fileVersion _ cfilebase.version; Space.Delete[codeSpace]; IF fileVersion # ftb[cfi].version THEN GOTO noCode}; code _ [ file: codeFile, span: [base: sgb[mh.code.sgi].base, pages: sgb[mh.code.sgi].pages]]; EXITS noCode => SIGNAL NoCode}; IF mti = MTNull OR sgb[mh.sseg].pages = 0 THEN SIGNAL NoSymbols ELSE { sfi _ sgb[mh.sseg].file; IF sfi # FTSelf THEN { symsFileName: STRING _ [40]; ss2.offset _ ftb[sfi].name; ss2.length _ ssb.size[ftb[sfi].name]; Strings.AppendSubString[symsFileName, @ss2]; FOR i: CARDINAL IN [0..symsFileName.length) DO IF symsFileName[i] = '. THEN EXIT; REPEAT FINISHED => Strings.AppendString[symsFileName, ".bcd"L]; ENDLOOP; symsFile _ OSMiscOps.FindFile[symsFileName ! OSMiscOps.FileError => {GOTO noSymbols}]}; IF sgb[mh.sseg].extraPages = 0 THEN SIGNAL NoFGT; IF sfi # FTSelf THEN { symsSpace: Space.Handle; sfilebase: BcdOps.BcdBase; fileVersion: BcdDefs.VersionStamp; symbols _ [symsFile, [base: 1, pages: 1]]; symsSpace _ MapPages[symbols]; sfilebase _ symsSpace.LongPointer; fileVersion _ sfilebase.version; Space.Delete[symsSpace]; IF fileVersion # ftb[sfi].version THEN GOTO noSymbols}; symbols _ [ file: symsFile, span: [ base: sgb[mh.sseg].base, pages: sgb[mh.sseg].pages+sgb[mh.sseg].extraPages]]; EXITS noSymbols => SIGNAL NoSymbols}; Space.Delete[bcdSpace]}; RETURN EXITS noFile => {SIGNAL NoFile; bcd _ FileSegment.nullPages}}; Load: PUBLIC PROC [name: STRING] RETURNS [code, symbols, bcd: FileSegment.Pages] = { file: File.Capability; code _ symbols _ FileSegment.nullPages; Dstar _ TRUE; file _ OSMiscOps.FindFile[name ! OSMiscOps.FileError => {GO TO noFile}]; filename _ name; bcd _ ReadHeader[file]; IF bcd # FileSegment.nullPages THEN { bcdSpace: Space.Handle = MapPages[bcd]; bcdBase: BcdOps.BcdBase = bcdSpace.LongPointer[]; mh: BcdOps.MTHandle; sgb: BcdDefs.Base; version _ bcdBase.version; creator _ bcdBase.creator; source _ bcdBase.sourceVersion; mh _ @LOOPHOLE[bcdBase + bcdBase.mtOffset, BcdDefs.Base][FIRST[BcdDefs.MTIndex]]; Dstar _ ~mh.altoCode; sgb _ LOOPHOLE[bcdBase + bcdBase.sgOffset]; IF bcdBase.nModules # 1 THEN SIGNAL MultipleModules; IF bcdBase.definitions THEN code _ FileSegment.nullPages ELSE code _ [bcd.file, [sgb[mh.code.sgi].base, sgb[mh.code.sgi].pages]]; IF sgb[mh.sseg].pages = 0 THEN symbols _ FileSegment.nullPages ELSE { IF sgb[mh.sseg].extraPages = 0 THEN SIGNAL NoFGT; symbols _ [ bcd.file, [sgb[mh.sseg].base, sgb[mh.sseg].pages + sgb[mh.sseg].extraPages]]}; DeleteSpace[bcdSpace]}; RETURN EXITS noFile => {SIGNAL NoFile; bcd _ FileSegment.nullPages}}; MapPages: PUBLIC PROC [pages: FileSegment.Pages] RETURNS [s: Space.Handle] = { IF pages = FileSegment.nullPages THEN s _ Space.nullHandle ELSE { s _ Space.Create[size: pages.span.pages, parent: Space.virtualMemory]; s.Map[window: [file: pages.file, base: pages.span.base]]}; RETURN}; DeleteSpace: PUBLIC PROC [s: Space.Handle] = { IF s # Space.nullHandle THEN Space.Delete[s]}; ReadHeader: PROC [file: File.Capability] RETURNS [ bcdPages: FileSegment.Pages _ FileSegment.nullPages] = { headerSpace: Space.Handle _ Space.nullHandle; DeleteHeader: PROC = { IF headerSpace # Space.nullHandle THEN { Space.Delete[headerSpace]; headerSpace _ Space.nullHandle}}; IF file # File.nullCapability THEN { ENABLE { UNWIND => {NULL}; ANY => {GO TO badFile}}; BcdBase: PROC [p: LONG POINTER] RETURNS [BcdDefs.Base] = INLINE { RETURN [LOOPHOLE[p, BcdDefs.Base]]}; bcd: BcdOps.BcdBase; nPages: CARDINAL _ 8; DO headerSpace _ Space.Create[size: nPages, parent: Space.virtualMemory]; headerSpace.Map[window: [file: file, base: 1]]; bcd _ headerSpace.LongPointer[]; IF bcd.versionIdent # BcdDefs.VersionID THEN GO TO badFile; IF nPages >= bcd.nPages THEN EXIT; nPages _ bcd.nPages; Space.Delete[headerSpace]; headerSpace _ Space.nullHandle ENDLOOP; bcdPages _ [file, [1, bcd.nPages]]; DeleteHeader[]; EXITS badFile => {DeleteHeader[]; bcdPages _ FileSegment.nullPages}}; RETURN}; WriteVersionId: PUBLIC PROC [stamp: BcdDefs.VersionStamp] = { StampWords: CARDINAL = SIZE[BcdDefs.VersionStamp]; str: PACKED ARRAY [0..4*StampWords) OF [0..16) = LOOPHOLE[stamp]; digit: STRING = "0123456789abcdef"L; PutChar['"]; FOR i: NAT IN [0..4*StampWords) DO PutChar[digit[str[i]]] ENDLOOP; PutString["\" ("L]; PutTime[[stamp.time]]; PutString[", "L]; PrintMachine[stamp]; PutChar[')]}; WriteOneVersion: PROC [ version: LONG POINTER TO BcdDefs.VersionStamp, tag: STRING] = { OPEN OutputDefs; IF version = NIL THEN RETURN; PutString[tag]; PutTime[[version.time]]; PutString[" on "L]; PrintMachine[version^]; PutChar['\n]}; WriteVersions: PUBLIC PROC [ version, creator, source: LONG POINTER TO BcdDefs.VersionStamp _ NIL] = { WriteOneVersion[version, " created "L]; WriteOneVersion[creator, " creator "L]; WriteOneVersion[source, " source "L]; OutputDefs.PutChar['\n]}; PrintMachine: PUBLIC PROC [stamp: BcdDefs.VersionStamp] = { octal: Format.NumberFormat = [8, FALSE, FALSE, 1]; PutNumber[stamp.net, octal]; PutChar['#]; PutNumber[stamp.host, octal]; PutChar['#]}; WriteFileID: PUBLIC PROC = { PutString[filename]; IF ~Dstar THEN PutString[" (/A)"L]; PutString[", version "L]; WriteVersionId[version]; PutString["\n source "L]; PutTime[[source.time]]; PutString["\n creator "L]; WriteVersionId[creator]; PutString["\n\n"L]}; PrintHti: PUBLIC PROC [hti: Symbols.HTIndex] = { desc: Strings.SubStringDescriptor; s: Strings.SubString = @desc; IF hti = Symbols.HTNull THEN PutString["(anonymous)"L] ELSE {symbols.SubStringForName[LOOPHOLE[s], hti]; PutLongSubString[s]}}; PrintSei: PUBLIC PROC [sei: Symbols.ISEIndex] = { PrintHti[IF sei = Symbols.SENull THEN Symbols.HTNull ELSE symbols.seb[sei].hash]}; Indent: PUBLIC PROC [n: CARDINAL] = { PutChar['\n]; THROUGH [1..n/8] DO PutChar['\t] ENDLOOP; THROUGH [1..n MOD 8] DO PutChar[' ] ENDLOOP}; WriteChar: PUBLIC PROC [char: CHARACTER] = {TTY.PutChar[Exec.w, char]}; WriteString: PUBLIC PROC [s: STRING] = {TTY.PutString[Exec.w, s]}; WriteLine: PUBLIC PROC [s: STRING] = {TTY.PutLine[Exec.w, s]}; WriteOctal: PUBLIC PROC [u: UNSPECIFIED] = {TTY.PutOctal[Exec.w, u]}; WriteDecimal: PUBLIC PROC [i: INTEGER] = {TTY.PutDecimal[Exec.w, i]}; herald: STRING _ [50]; LoadLister: PROC = { CommanderOps.InitCommander[herald]; Strings.AppendString[to: herald, from: "Cedar 3 Lister of "L]; Time.Append[herald, Time.Unpack[[OSMiscOps.BcdCreateTime[]]]]; herald.length _ herald.length - 3; Exec.AddCommand["Lister.~"L, Lister]}; Lister: PROC = {CommanderOps.WaitCommands[]}; LoadLister[]; }.  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