[Pixel]<DragonWare0.1>DragGen>GenRichards.mesa!1

GenRichards.mesa

Russ Atkinson (RRA) September 15, 1986 11:37:35 pm PDT

This program was hand-converted from Richards.mesa, which started out life as Martin Richards' simple operating system benchmark program (written in BCPL).

DIRECTORY

DragOpsCross,

DragOpsCrossUtils,

HandCoding,

HandCodingPseudos,

HandCodingSupport;

GenRichards: CEDAR PROGRAM

IMPORTS DragOpsCrossUtils, HandCoding, HandCodingPseudos, HandCodingSupport

= BEGIN OPEN DragOpsCross, DragOpsCrossUtils, HandCoding, HandCodingPseudos;

Area: TYPE = HandCodingSupport.Area;

This program takes

2.56 seconds on a Dorado

Total instructions: 693, Bytes: 1094

Offsets in the global frame

gZ: NAT = 0;

gQueuePacketCount: NAT = 1;

gHoldCount: NAT = 2;

gTaskTable: NAT = 3;

gTaskTableSize: NAT = 7;

gTaskList: NAT = 10;

gCurrentTask: NAT = 11;

gCurrentTaskIdentity: NAT = 12;

gAllocObjects: NAT = 13;

gAllocWords: NAT = 14;

gAllocBase: NAT = 15;

gAllocPtr: NAT = 16;

gAllocPtrPtr: NAT = 17;

Reserve space in the global frame for procedure variables

gIdleFunction: NAT = 18;

gDeviceFunction: NAT = 19;

gHandlerFunction: NAT = 20;

gWorkFunction: NAT = 21;

gSIZE: NAT = 22;

Global Labels and stuff

globalFrameCard: LONG CARDINAL; -- global frame base

globalFrame: Word; -- global frame base as word

externalAlloc: Label ← NIL;

externalMove: Label ← NIL;

enterInit: Label ← NIL;

enterAlloc: Label ← NIL;

enterInitScheduler: Label ← NIL;

enterCreateTask: Label ← NIL;

enterCreatePacket: Label ← NIL;

enterQueuePacket: Label ← NIL;

enterAppend: Label ← NIL;

enterSchedule: Label ← NIL;

enterWait: Label ← NIL;

enterHoldSelf: Label ← NIL;

enterRelease: Label ← NIL;

enterFindTask: Label ← NIL;

enterCreateIdler: Label ← NIL;

enterIdleFunction: Label ← NIL;

enterCreateDevice: Label ← NIL;

enterDeviceFunction: Label ← NIL;

enterCreateHandler: Label ← NIL;

enterHandlerFunction: Label ← NIL;

enterCreateWorker: Label ← NIL;

enterWorkFunction: Label ← NIL;

enterMain: Label ← NIL;

TaskControlBlock: TYPE = RECORD [

link: Task,

identity: TaskIdentity,

priority: TaskPriority,

input: WorkQueue,

state: TaskState,

function: TaskOperation,

handle: LONG POINTER];

tcbLink: NAT = 0;

tcbIdentity: NAT = 1;

tcbPriority: NAT = 2;

tcbInput: NAT = 3;

tcbState: NAT = 4;

tcbFunction: NAT = 5;

tcbHandle: NAT = 6;

tcbSIZE: NAT = 7;

WorkQueue: TYPE = LONG POINTER TO Packet;

Packet: TYPE = RECORD [

link: WorkQueue,

identity: TaskIdentity,

kind: PacketKind,

datum: CARDINAL,

data: ARRAY [0..packetBufferSize] OF CARDINAL];

pktLink: NAT = 0;

pktIdentity: NAT = 1;

pktKind: NAT = 2;

pktDatum: NAT = 3;

pktData: NAT = 4;

pktBufferSize: NAT = 3;

pktSIZE: NAT = pktData+pktBufferSize+1;

pktKdevicePacketKind: NAT = 0;

pktKworkPacketKind: NAT = 1;

waiting: Word = CardToWord[10000000000B];

waitingWithPacket: Word = CardToWord[30000000000B];

TaskState: TYPE = RECORD [packetPending, taskWaiting, taskHolding: BOOL ← FALSE];

packetPending: NAT = 31;

taskWaiting: NAT = 30;

taskHolding: NAT = 29;

All: PROC = {

This procedure generates all of the code for the bench mark. It basically handles housekeeping pertinent to the code generation, but not to the code execution.

area: Area = HandCodingSupport.GetCurrentArea[];

externalAlloc ← HandCodingPseudos.GetGlobalLabel["Basics.AllocVector"];

externalMove ← HandCodingPseudos.GetGlobalLabel["Basics.MoveVector"];

enterInit ← GenLabel[];

enterInitScheduler ← GenLabel[];

enterCreateTask ← GenLabel[];

enterCreatePacket ← GenLabel[];

enterQueuePacket ← GenLabel[];

enterAppend ← GenLabel[];

enterSchedule ← GenLabel[];

enterWait ← GenLabel[];

enterHoldSelf ← GenLabel[];

enterRelease ← GenLabel[];

enterFindTask ← GenLabel[];

enterCreateIdler ← GenLabel[];

enterIdleFunction ← GenLabel[];

enterCreateDevice ← GenLabel[];

enterDeviceFunction ← GenLabel[];

enterCreateHandler ← GenLabel[];

enterHandlerFunction ← GenLabel[];

enterCreateWorker ← GenLabel[];

enterWorkFunction ← GenLabel[];

enterMain ← GenLabel[];

enterAlloc ← GenLabel[];

GenInit[]; -- global frame initialization comes first

GenAlloc[]; -- our pet simple allocator

GenInitScheduler[];

GenCreateTask[];

GenCreatePacket[];

GenQueuePacket[];

GenAppend[];

GenSchedule[];

GenWait[];

GenHoldSelf[];

GenRelease[];

GenFindTask[];

GenCreateIdler[];

GenIdleFunction[];

GenCreateDevice[];

GenDeviceFunction[];

GenCreateHandler[];

GenHandlerFunction[];

GenCreateWorker[];

GenWorkFunction[];

GenMain[];

Reserve the static storage (last to avoid overwriting code)

Reserve the global frame (a page is quite sufficient)

HandCodingSupport.SetOutputPC[globalFrameCard * bytesPerWord];

HandCodingSupport.OutputWord[area, ZerosWord];

};

GenInit: PROC = {

This procedure generates the initialzation code for Puzzle.

area: Area = HandCodingSupport.GetCurrentArea[];

startLabel: Label = GenLabelHere[];

HandCodingPseudos.MakeLabelGlobal["Richards.Init", startLabel];

reserve data statically

globalFrameCard ← HandCodingSupport.ReserveData[1*wordsPerPage] / bytesPerWord;

globalFrame ← CardToWord[globalFrameCard];

{

Initialialize the global variables.

G: RegSpec = reg0;

top: RegSpec = reg1;

drASL[255]; -- ensure that stack is empty, regardless of where it was

drLIQB[globalFrame];

drLC0[];

Initialize the procedure variables (we need one level of indirection for SFCI)

drLIQB[UseLabel32[enterIdleFunction]]; drSRIn[G, gIdleFunction];

drLIQB[UseLabel32[enterDeviceFunction]]; drSRIn[G, gDeviceFunction];

drLIQB[UseLabel32[enterHandlerFunction]]; drSRIn[G, gHandlerFunction];

drLIQB[UseLabel32[enterWorkFunction]]; drSRIn[G, gWorkFunction];

drLIDB[256+1]; drLFC[UseLabel16[externalAlloc]]; drSRIn[G, gAllocBase];

Allocate enough memory to hold the objects we will allocate

drLRIn[G, gAllocBase]; drLIDB[256]; drWSB[0];

init the words field of the sequence

drLIQB[UseLabel32[enterAlloc]]; drSRIn[G, gAllocPtr];

allocPtr: PROC ANY RETURNS ANY ← Alloc

drLRn[G]; drADDB[gAllocPtr]; drSRIn[G, gAllocPtrPtr];

allocPtrPtr: LONG POINTER ← LOOPHOLE[LONG[@allocPtr]]

drLRn[G]; drADDB[gAllocPtrPtr]; drSRIn[G, gZ];

z ← LOOPHOLE[LONG[@allocPtrPtr]]

drLFC[UseLabel16[enterMain]];

Enter the main program

};

GenAlloc: PROC = {

Alloc: PROC [z: UNCOUNTED ZONE, words: CARDINAL] RETURNS [LONG POINTER]

returnLabel: Label = GenLabel[];

rZ: RegSpec = reg0;

rWords: RegSpec = reg1;

G: RegSpec = reg2;

rIndex: RegSpec = reg3;

ProcedureEntry[enterAlloc, 2];

HandCodingPseudos.MakeLabelGlobal["Richards.Alloc", enterAlloc];

drLIQB[globalFrame];

drLRIn[G, gAllocWords];

index: CARDINAL ← allocWords

drLRIn[G, gAllocObjects]; drADDB[1]; drSRIn[G, gAllocObjects];

allocObjects ← allocObjects + 1

drLRIn[G, gAllocWords]; drQADD[topAtop, rWords]; drSRIn[G, gAllocWords];

allocWords ← allocWords + words

drLRn[rIndex];

drLRIn[G, gAllocBase]; drRB[0]; drBC[];

drLRIn[G, gAllocBase]; drADDB[1]; drADD[];

RETURN [@allocBase[index]]

drSRn[rZ];

ProcedureExit[1];

};

GenInitScheduler: PROC = {

InitScheduler: PROC []

G: RegSpec = reg0;

rZero: RegSpec = reg1;

ProcedureEntry[enterInitScheduler, 0];

HandCodingPseudos.MakeLabelGlobal["Richards.InitScheduler", enterInitScheduler];

drLIQB[globalFrame];

drLC0[];

drWRI[rZero, G, gQueuePacketCount]; drWRI[rZero, G, gHoldCount];

queuePacketCount ← holdCount ← 0

drWRI[rZero, G, gAllocWords]; drWRI[rZero, G, gAllocObjects];

allocWords ← allocObjects ← 0

drWRI[rZero, G, gTaskTable]; drWRI[rZero, G, gTaskTable+1];

drWRI[rZero, G, gTaskTable+2]; drWRI[rZero, G, gTaskTable+3];

drWRI[rZero, G, gTaskTable+4]; drWRI[rZero, G, gTaskTable+5];

drWRI[rZero, G, gTaskTable+6];

taskTable ← ALL[noTask]

drWRI[rZero, G, gTaskList];

taskList ← noTask

ProcedureExit[0];

};

GenCreateTask: PROC = {

CreateTask: PROC [identity: TaskIdentity, priority: TaskPriority, initialWorkQueue: WorkQueue, initialState: TaskState, function: TaskOperation, privateData: LONG POINTER]

rIdentity: RegSpec = reg0;

rPriority: RegSpec = reg1;

rInitialWorkQueue: RegSpec = reg2;

rInitialState: RegSpec = reg3;

rFunction: RegSpec = reg4;

rPrivateData: RegSpec = reg5;

G: RegSpec = reg6;

rT: RegSpec = reg7;

ProcedureEntry[enterCreateTask, 6];

HandCodingPseudos.MakeLabelGlobal["Richards.CreateTask", enterCreateTask];

drLIQB[globalFrame];

drLC0[];

{

t: Task ← z.NEW[TaskControlBlock ← [

link: taskList,

identity: identity,

priority: priority,

input: initialWorkQueue,

state: initialState,

function: function,

handle: privateData]];

drLRIn[G, gZ]; drLIB[tcbSIZE];

drLRIn[G, gZ]; drRB[0]; drRB[0]; drSFC[]; drSRn[rT];

t: Task ← z.NEW[TaskControlBlock ...

drLRIn[G, gTaskList]; drSRIn[rT, tcbLink];

link: taskList,

drWRI[rIdentity, rT, tcbIdentity];

identity: identity,

drWRI[rPriority, rT, tcbPriority];

priority: priority,

drWRI[rInitialWorkQueue, rT, tcbInput];

input: initialWorkQueue,

drWRI[rInitialState, rT, tcbState];

state: initialState,

drWRI[rFunction, rT, tcbFunction];

function: function,

drWRI[rPrivateData, rT, tcbHandle];

handle: privateData,

};

drLRn[rT]; drSRIn[G, gTaskList];

taskList ← t

drLRn[rT]; drRADD[pushDst, G, rIdentity]; drWB[gTaskTable];

taskTable[identity] ← t

ProcedureExit[0];

};

GenCreatePacket: PROC = {

CreatePacket: PROC [link: WorkQueue, identity: TaskIdentity, kind: PacketKind]

RETURNS [workQueue: WorkQueue]

rLink: RegSpec = reg0;

rIdentity: RegSpec = reg1;

rKind: RegSpec = reg2;

rWorkQueue: RegSpec = reg3;

G: RegSpec = reg4;

rZero: RegSpec = reg5;

ProcedureEntry[enterCreatePacket, 3];

HandCodingPseudos.MakeLabelGlobal["Richards.CreatePacket", enterCreatePacket];

drLC0[];

drLIQB[globalFrame];

drLC0[];

{

workQueue ← z.NEW[Packet ← [

link: link,

identity: identity,

kind: kind,

datum: 0,

data: ALL[0]]];

drLRIn[G, gZ]; drLIB[pktSIZE];

drLRIn[G, gZ]; drRB[0]; drRB[0]; drSFC[]; drSRn[rWorkQueue];

workQueue ← z.NEW[Packet ...

drWRI[rLink, rWorkQueue, pktLink];

link: link,

drWRI[rIdentity, rWorkQueue, pktIdentity];

identity: identity,

drWRI[rKind, rWorkQueue, pktKind];

kind: kind,

drWRI[rZero, rWorkQueue, pktDatum];

datum: 0,

drWRI[rZero, rWorkQueue, pktData]; drWRI[rZero, rWorkQueue, pktData+1];

drWRI[rZero, rWorkQueue, pktData+2]; drWRI[rZero, rWorkQueue, pktData+3];

data: ALL[0]]]

};

drROR[reg0, const0, rWorkQueue];

RETURN [workQueue]

ProcedureExit[1];

};

GenQueuePacket: PROC = {

QueuePacket: PROC [packet: WorkQueue] RETURNS [task: Task]

rPacket: RegSpec = reg0;

rTask: RegSpec = reg1;

G: RegSpec = reg2;

rT: RegSpec = reg3;

returnLabel: Label = GenLabel[];

ProcedureEntry[enterQueuePacket, 1];

HandCodingPseudos.MakeLabelGlobal["Richards.QueuePacket", enterQueuePacket];

drLC0[];

drLIQB[globalFrame];

drLRIn[rPacket, pktIdentity]; drLFC[UseLabel16[enterFindTask]];

t: Task ← FindTask[packet.identity]

{fiLabel: Label = GenLabel[];

drLRn[rT]; drJNEBBJ[0, UseLabel8B[fiLabel]];

drLC0[]; drJB[UseLabel8A[returnLabel]];

IF t = noTask THEN RETURN [noTask];

SetLabel[fiLabel];

};

drLRIn[G, gQueuePacketCount]; drLIDB[23246];

drRJGEBJ[left: popSrc, right: belowSrcPop, dist: 6];

Halt[201B]; -- bomb out here if the queuePacketCount gets too large

drLRIn[G, gQueuePacketCount]; drADDB[1]; drSRIn[G, gQueuePacketCount];

queuePacketCount ← queuePacketCount+1;

drLC0[]; drSRIn[rPacket, pktLink];

packet.link ← noWork;

drLRIn[G, gCurrentTaskIdentity]; drSRIn[rPacket, pktIdentity];

packet.identity ← currentTaskIdentity;

{

elseLabel: Label = GenLabel[];

fiLabel: Label = GenLabel[];

drLRIn[rT, tcbInput]; drJNEBB[0, UseLabel8B[elseLabel]];

IF t.input = noWork ...

drWRI[rPacket, rT, tcbInput];

t.input ← packet

drLRIn[rT, tcbState];

drLC1[];

drSHDR[FieldDescriptorToCard[[insert: TRUE, mask: packetPending+1, shift: packetPending]]];

drSRIn[rT, tcbState];

t.state.packetPending ← TRUE

drLRIn[rT, tcbPriority]; drLRIn[G, gCurrentTask]; drRB[tcbPriority];

drRJGEBJ[left: popSrc, right: belowSrcPop, dist: UseLabel8B[fiLabel]];

IF t.priority > currentTask.priority THEN ...

drLRn[rT]; drJB[UseLabel8A[returnLabel]];

... RETURN [t]

SetLabel[elseLabel];

drLRn[rPacket]; drRADD[pushDst, rT, const3]; drLFC[UseLabel16[enterAppend]];

ELSE

Append[packet, @t.input];

SetLabel[fiLabel];

};

drLRIn[G, gCurrentTask];

SetLabel[returnLabel];

drSRn[reg0];

RETURN [currentTask]

ProcedureExit[1];

};

GenAppend: PROC = {

Append: PROC [packet: WorkQueue, head: LONG POINTER TO WorkQueue]

rPacket: RegSpec = reg0;

rHead: RegSpec = reg1;

G: RegSpec = reg2;

rZero: RegSpec = reg3;

returnLabel: Label = GenLabel[];

ProcedureEntry[enterAppend, 2];

HandCodingPseudos.MakeLabelGlobal["Richards.Append", enterAppend];

drLIQB[globalFrame];

drLC0[];

drWRI[rZero, rPacket, pktLink];

packet.link ← noWork

{fiLabel: Label = GenLabel[];

drLRIn[rHead, 0]; drJNEBBJ[0, UseLabel8B[fiLabel]];

drWRI[rPacket, rHead, 0]; ProcedureExit[0];

IF head^ = noWork THEN {head^ ← packet; RETURN};

SetLabel[fiLabel];

};

{

FOR mouse: WorkQueue ← head^, mouse.link UNTIL mouse.link = noWork DO

REPEAT

FINISHED => mouse.link ← packet

ENDLOOP;

rMouse: RegSpec = reg4;

loopLabel: Label = GenLabel[];

testLabel: Label = GenLabel[];

drLRIn[rHead, 0];

mouse: WorkQueue ← head^

drJB[UseLabel8A[testLabel]];

HandCodingSupport.WordAlign[];

SetLabel[loopLabel];

drLRIn[rMouse, 0];

drSRn[rMouse];

, mouse.link

SetLabel[testLabel];

drLRIn[rMouse, 0];

drJNEBBJ[0, UseLabel8B[loopLabel]];

UNTIL mouse.link = noWork DO REPEAT

drWRI[rPacket, rMouse, pktLink];

FINISHED => mouse.link ← packet

drDIS[];

ENDLOOP

};

SetLabel[returnLabel];

ProcedureExit[0];

};

GenSchedule: PROC = {

Schedule: PROC []

G: RegSpec = reg0;

rZero: RegSpec = reg1;

rMessage: RegSpec = reg2;

returnLabel: Label = GenLabel[];

ProcedureEntry[enterSchedule, 0];

HandCodingPseudos.MakeLabelGlobal["Richards.Schedule", enterSchedule];

drLIQB[globalFrame];

drLC0[];

drLRIn[G, gTaskList]; drSRIn[G, gCurrentTask];

currentTask ← taskList

{

testLabel: Label = GenLabel[];

loopLabel: Label = GenLabel[];

drJB[UseLabel8A[testLabel]];

WHILE currentTask # noTask DO

HandCodingSupport.WordAlign[];

SetLabel[loopLabel];

drROR[rMessage, const0, const0];

message ← noWork

{

thenLabel: Label = GenLabel[];

elseLabel: Label = GenLabel[];

fiLabel: Label = GenLabel[];

drLRIn[G, gCurrentTask]; drRB[tcbState]; ExtractField[2, 1];

drJEBB[1, UseLabel8B[thenLabel]];

drLRIn[G, gCurrentTask]; drRB[tcbState]; drLIQB[waiting];

drRJNEB[left: popSrc, right: belowSrcPop, dist: UseLabel8B[elseLabel]];

IF currentTask.state.taskHolding OR currentTask.state = waiting

SetLabel[thenLabel];

drLRIn[G, gCurrentTask]; drRB[tcbLink]; drSRIn[G, gCurrentTask];

drJB[UseLabel8A[fiLabel]];

THEN currentTask ← currentTask.link

SetLabel[elseLabel];

ELSE

{

innerElseLabel: Label = GenLabel[];

IF currentTask.state = waitingWithPacket THEN {

message ← currentTask.input;

currentTask.input ← message.link;

...

};

drLRIn[G, gCurrentTask]; drRB[tcbState]; drLIQB[waitingWithPacket];

drRJNEB[left: popSrc, right: belowSrcPop, dist: UseLabel8B[innerElseLabel]];

IF currentTask.state = waitingWithPacket THEN {

drLRIn[G, gCurrentTask]; drRB[tcbInput]; drSRn[rMessage];

message ← currentTask.input

drLRIn[rMessage, tcbLink]; drLRIn[G, gCurrentTask]; drWB[tcbInput];

currentTask.input ← message.link

{

innerInnerElseLabel: Label = GenLabel[];

innerInnerFiLabel: Label = GenLabel[];

drLRIn[G, gCurrentTask]; drRB[tcbInput];

drJNEBB[0, UseLabel8B[innerInnerElseLabel]];

IF currentTask.input = noWork

drLC0[]; drLRIn[G, gCurrentTask]; drWB[tcbState];

drJB[UseLabel8A[innerInnerFiLabel]];

THEN currentTask.state ← running

SetLabel[innerInnerElseLabel];

LReg[constNI]; drLRIn[G, gCurrentTask]; drWB[tcbState];

ELSE currentTask.state ← [packetPending: TRUE]

SetLabel[innerInnerFiLabel];

};

SetLabel[innerElseLabel];

drLRIn[G, gCurrentTask]; drRB[tcbIdentity]; drSRIn[G, gCurrentTaskIdentity];

currentTaskIdentity ← currentTask.identity;

drLRn[rMessage]; drLRIn[G, gCurrentTask]; drRB[tcbHandle];

drLRIn[G, gCurrentTask]; drRB[tcbFunction]; drSFCI[];

drSRIn[G, gCurrentTask];

currentTask ← currentTask.function[message, currentTask.handle];

};

SetLabel[fiLabel];

};

SetLabel[testLabel];

drLRIn[G, gCurrentTask];

drJNEBBJ[0, UseLabel8B[loopLabel]];

};

SetLabel[returnLabel];

ProcedureExit[0];

};

GenWait: PROC = {

Wait: PROC [] RETURNS [task: Task]

rTask: RegSpec = reg0;

G: RegSpec = reg1;

ProcedureEntry[enterWait, 0];

HandCodingPseudos.MakeLabelGlobal["Richards.Wait", enterWait];

drLC0[];

drLIQB[globalFrame];

drLRIn[G, gCurrentTask]; drRB[tcbState];

drLC1[];

drSHDR[FieldDescriptorToCard[[insert: TRUE, mask: taskWaiting+1, shift: taskWaiting]]];

drLRIn[G, gCurrentTask]; drWB[tcbState];

currentTask.state.taskWaiting ← TRUE

drLRIn[G, gCurrentTask]; drSRn[rTask];

RETURN [currentTask]

ProcedureExit[1];

};

GenHoldSelf: PROC = {

HoldSelf: PROC [] RETURNS [task: Task]

rTask: RegSpec = reg0;

G: RegSpec = reg1;

ProcedureEntry[enterHoldSelf, 0];

HandCodingPseudos.MakeLabelGlobal["Richards.HoldSelf", enterHoldSelf];

drLC0[];

drLIQB[globalFrame];

drLRIn[G, gHoldCount]; drADDB[1]; drSRIn[G, gHoldCount];

holdCount ← holdCount+1

drLRIn[G, gCurrentTask]; drRB[tcbState];

drLC1[];

drSHDR[FieldDescriptorToCard[[insert: TRUE, mask: taskHolding+1, shift: taskHolding]]];

drLRIn[G, gCurrentTask]; drWB[tcbState];

currentTask.state.taskHolding ← TRUE

drLRIn[G, gCurrentTask]; drRB[tcbLink]; drSRn[rTask];

RETURN [currentTask.link]

ProcedureExit[1];

};

GenRelease: PROC = {

Release: PROC [identity: TaskIdentity] RETURNS [task: Task]

rIdentity: RegSpec = reg0;

rTask: RegSpec = reg1;

G: RegSpec = reg2;

rT: RegSpec = reg3;

ProcedureEntry[enterRelease, 1];

HandCodingPseudos.MakeLabelGlobal["Richards.Release", enterRelease];

drLC0[];

drLIQB[globalFrame];

drLRn[rIdentity]; drLFC[UseLabel16[enterFindTask]];

t: Task ← FindTask[identity]

{elseLabel: Label = GenLabel[];

drLRn[rT]; drJNEBBJ[0, UseLabel8B[elseLabel]];

drROR[reg0, const0, const0]; ProcedureExit[1];

IF t = noTask THEN RETURN [noTask];

SetLabel[elseLabel];

};

drLRIn[rT, tcbState];

drLC0[];

drSHDR[FieldDescriptorToCard[[insert: TRUE, mask: taskHolding+1, shift: taskHolding]]];

drSRIn[rT, tcbState];

t.state.taskHolding ← FALSE

{

elseLabel: Label = GenLabel[];

drLRIn[rT, tcbPriority]; drLRIn[G, gCurrentTask]; drRB[tcbPriority];

drRJGEB[left: popSrc, right: belowSrcPop, dist: UseLabel8B[elseLabel]];

IF t.priority > currentTask.priority

drROR[reg0, const0, rT]; ProcedureExit[1];

THEN RETURN [t]

SetLabel[elseLabel];

drRRI[reg0, G, gCurrentTask]; ProcedureExit[1];

ELSE RETURN [currentTask]

};

GenFindTask: PROC = {

FindTask: PROC [identity: TaskIdentity] RETURNS [task: Task]

rIdentity: RegSpec = reg0;

rTask: RegSpec = reg1;

G: RegSpec = reg2;

rT: RegSpec = reg3;

returnLabel: Label = GenLabel[];

ProcedureEntry[enterFindTask, 1];

HandCodingPseudos.MakeLabelGlobal["Richards.FindTask", enterFindTask];

drLC0[];

drLIQB[globalFrame];

drRVADD[pushDst, G, rIdentity]; drRB[gTaskTable];

t: Task ← taskTable[identity]

{

drLRn[rT]; drJNEBBJ[0, UseLabel8B[returnLabel]];

IF t = noTask THEN ERROR

Halt[377B];

};

SetLabel[returnLabel];

drROR[reg0, const0, rT];

ProcedureExit[1];

};

GenCreateIdler: PROC = {

CreateIdler: PROC

[identity: TaskIdentity, priority: TaskPriority, work: WorkQueue, state: TaskState]

rIdentity: RegSpec = reg0;

rPriority: RegSpec = reg1;

rWork: RegSpec = reg2;

rState: RegSpec = reg3;

G: RegSpec = reg4;

rData: RegSpec = reg5;

ProcedureEntry[enterCreateIdler, 4];

HandCodingPseudos.MakeLabelGlobal["Richards.CreateIdler", enterCreateIdler];

drLIQB[globalFrame];

drLC0[];

{

data: IdleTaskData ← z.NEW[IdleTaskDataRecord ← [initialControl, 10000]];

drLRIn[G, gZ]; drLIB[2];

drLRIn[G, gZ]; drRB[0]; drRB[0]; drSFC[]; drSRn[rData];

drLIB[1]; drSRIn[rData, 0];

drLIDB[10000]; drSRIn[rData, 1];

};

{

CreateTask[identity, priority, work, state, IdleFunction, data];

drLRn[rIdentity]; drLRn[rPriority]; drLRn[rWork]; drLRn[rState];

drLRn[G]; drADDB[gIdleFunction]; drLRn[rData];

drLFC[UseLabel16[enterCreateTask]];

};

ProcedureExit[0];

};

GenIdleFunction: PROC = {

IdleFunction: TaskOperation

== [work: WorkQueue, word: LONG POINTER] RETURNS [t: Task]

rWork: RegSpec = reg0;

rWord: RegSpec = reg1;

G: RegSpec = reg2;

rT: RegSpec = reg3;

rData: RegSpec = reg4;

returnLabel: Label = GenLabel[];

ProcedureEntry[enterIdleFunction, 2+1];

HandCodingPseudos.MakeLabelGlobal["Richards.IdleFunction", enterIdleFunction];

drSUBB[gIdleFunction]; -- a pointer into the global frame is an implcit argument

drLC0[];

{

elseLabel: Label = GenLabel[];

drLRn[rWord];

data: IdleTaskData ← word

drLRIn[rData, 1]; drRVSUB[topDst, topSrc, const1]; drSRIn[rData, 1];

data.count ← data.count-1

drLRIn[rData, 1]; drJNEBBJ[0, UseLabel8B[elseLabel]];

drLFC[UseLabel16[enterHoldSelf]];

drJB[UseLabel8A[returnLabel]];

IF data.count = 0 THEN RETURN [HoldSelf[]];

SetLabel[elseLabel];

};

{

elseLabel: Label = GenLabel[];

drLRIn[rData, 0]; drQAND[topAtop, const1];

drJNEBB[0, UseLabel8B[elseLabel]];

drLRIn[rData, 0]; ExtractField[0, 31]; drSRIn[rData, 0];

data.control ← data.control/2;

drLIB[5]; drLFC[UseLabel16[enterRelease]]; drJB[UseLabel8A[returnLabel]];

RETURN [Release[deviceA]];

SetLabel[elseLabel];

drLRIn[rData, 0]; ExtractField[0, 31];

drLIDB[0D008H]; drRXOR[belowDst, belowSrc, popSrc]; drSRIn[rData, 0];

data.control ← PrincOpsUtils.BITXOR[data.control/2, hashValue]

drLIB[6]; drLFC[UseLabel16[enterRelease]];

RETURN [Release[deviceB]];

};

SetLabel[returnLabel];

drSRn[reg0];

ProcedureExit[1];

};

GenCreateDevice: PROC = {

CreateDevice: PROC

[identity: TaskIdentity, priority: TaskPriority, work: WorkQueue, state: TaskState]

rIdentity: RegSpec = reg0;

rPriority: RegSpec = reg1;

rWork: RegSpec = reg2;

rState: RegSpec = reg3;

G: RegSpec = reg4;

rData: RegSpec = reg5;

ProcedureEntry[enterCreateDevice, 4];

HandCodingPseudos.MakeLabelGlobal["Richards.CreateDevice", enterCreateDevice];

drLIQB[globalFrame];

drLC0[];

{

data: DeviceTaskData ← z.NEW[DeviceTaskDataRecord ← [noWork]];

drLRIn[G, gZ]; drLIB[2];

drLRIn[G, gZ]; drRB[0]; drRB[0]; drSFC[]; drSRn[rData];

drLC0[]; drSRIn[rData, 0];

};

{

CreateTask[identity, priority, work, state, DeviceFunction, data];

drLRn[rIdentity]; drLRn[rPriority]; drLRn[rWork]; drLRn[rState];

drLRn[G]; drADDB[gDeviceFunction]; drLRn[rData];

drLFC[UseLabel16[enterCreateTask]];

};

ProcedureExit[0];

};

GenDeviceFunction: PROC = {

DeviceFunction: TaskOperation

== [work: WorkQueue, word: LONG POINTER] RETURNS [t: Task]

rWork: RegSpec = reg0;

rWord: RegSpec = reg1;

G: RegSpec = reg2;

rT: RegSpec = reg3;

rData: RegSpec = reg4;

returnLabel: Label = GenLabel[];

ProcedureEntry[enterDeviceFunction, 2+1];

HandCodingPseudos.MakeLabelGlobal["Richards.DeviceFunction", enterDeviceFunction];

drSUBB[gDeviceFunction]; -- a pointer into the global frame is an implcit argument

drLC0[];

{

elseLabel: Label = GenLabel[];

drLRn[rWord];

data: IdleTaskData ← word

drLRn[rWork]; drJNEBB[0, UseLabel8B[elseLabel]];

IF work = noWork THEN

{

innerElseLabel: Label = GenLabel[];

drLRIn[rData, 0]; drJNEBB[0, UseLabel8B[innerElseLabel]];

drLFC[UseLabel16[enterWait]];

drJB[UseLabel8A[returnLabel]];

IF data.pending = noWork THEN RETURN [Wait[]]

SetLabel[innerElseLabel];

};

drRRI[rWork, rData, 0];

work ← data.pending

drLC0[]; drSRIn[rData, 0];

data.pending ← noWork

drLRn[rWork]; drLFC[UseLabel16[enterQueuePacket]];

drJB[UseLabel8A[returnLabel]];

RETURN [QueuePacket[work]]

SetLabel[elseLabel];

ELSE

drWRI[rWork, rData, 0];

data.pending ← work

drLFC[UseLabel16[enterHoldSelf]];

RETURN [HoldSelf[]]

};

SetLabel[returnLabel];

drSRn[reg0];

ProcedureExit[1];

};

GenCreateHandler: PROC = {

CreateHandler: PROC

[identity: TaskIdentity, priority: TaskPriority, work: WorkQueue, state: TaskState]

rIdentity: RegSpec = reg0;

rPriority: RegSpec = reg1;

rWork: RegSpec = reg2;

rState: RegSpec = reg3;

G: RegSpec = reg4;

rData: RegSpec = reg5;

ProcedureEntry[enterCreateHandler, 4];

HandCodingPseudos.MakeLabelGlobal["Richards.CreateHandler", enterCreateHandler];

drLIQB[globalFrame];

drLC0[];

{

data: HandlerTaskData ← z.NEW[HandlerTaskDataRecord ← [noWork, noWork]];

drLRIn[G, gZ]; drLIB[2];

drLRIn[G, gZ]; drRB[0]; drRB[0]; drSFC[]; drSRn[rData];

drLC0[]; drSRIn[rData, 0];

drLC0[]; drSRIn[rData, 1];

};

{

CreateTask[identity, priority, work, state, HandlerFunction, data];

drLRn[rIdentity]; drLRn[rPriority]; drLRn[rWork]; drLRn[rState];

drLRn[G]; drADDB[gHandlerFunction]; drLRn[rData];

drLFC[UseLabel16[enterCreateTask]];

};

ProcedureExit[0];

};

GenHandlerFunction: PROC = {

HandlerFunction: TaskOperation

== [work: WorkQueue, word: LONG POINTER] RETURNS [t: Task]

rWork: RegSpec = reg0;

rWord: RegSpec = reg1;

G: RegSpec = reg2;

rT: RegSpec = reg3;

rData: RegSpec = reg4;

rWorkPacket: RegSpec = reg5;

rDevicePacket: RegSpec = reg6;

rCount: RegSpec = reg7;

returnLabel: Label = GenLabel[];

ProcedureEntry[enterHandlerFunction, 2+1];

HandCodingPseudos.MakeLabelGlobal["Richards.HandlerFunction", enterHandlerFunction];

drSUBB[gHandlerFunction]; -- a pointer into the global frame is an implcit argument

drLC0[];

drLRn[rWord];

data: IdleTaskData ← word

drLC0[]; drLC0[];

workPacket, devicePacket: WorkQueue

drLC0[];

count: INTEGER

{elseLabel: Label = GenLabel[];

drLRn[rWork]; drJEBB[0, UseLabel8B[elseLabel]];

IF work # noWork THEN

{

innerElseLabel: Label = GenLabel[];

innerFiLabel: Label = GenLabel[];

drLRIn[rWork, pktKind]; drJNEBB[1, UseLabel8B[innerElseLabel]];

IF work.kind = workPacketKind

drLRn[rWork]; drLRn[rData]; drLFC[UseLabel16[enterAppend]];

THEN Append[work, @data.workIn]

drJB[UseLabel8A[innerFiLabel]];

SetLabel[innerElseLabel];

drLRn[rWork]; drQADD[pushA1, rData]; drLFC[UseLabel16[enterAppend]];

ELSE Append[work, @data.deviceIn]

SetLabel[innerFiLabel];

};

SetLabel[elseLabel];

};

{elseLabel: Label = GenLabel[];

drLRIn[rData, 0]; drJEBB[0, UseLabel8B[elseLabel]];

IF data.workIn # noWork THEN

drRRI[rWorkPacket, rData, 0];

workPacket ← data.workIn

drLRIn[rWorkPacket, pktDatum];

drRBC[rCount, topSrc, constNI]; -- (check for negative while assigning)

count ← workPacket.datum

{

innerElseLabel: Label = GenLabel[];

drLRn[rCount];

drRJLEBJ[left: popSrc, right: const3, dist: UseLabel8B[innerElseLabel]];

IF count > packetBufferSize THEN

drLRIn[rData, 0]; drRB[pktLink]; drSRIn[rData, 0];

data.workIn ← data.workIn.link

drLRn[rWorkPacket]; drLFC[UseLabel16[enterQueuePacket]];

drJB[UseLabel8A[returnLabel]];

RETURN [QueuePacket[workPacket]]

SetLabel[innerElseLabel];

};

{

drLRIn[rData, 1]; drJEBB[0, UseLabel8B[elseLabel]];

IF data.deviceIn # noWork THEN

drRRI[rDevicePacket, rData, 1];

devicePacket ← data.deviceIn

drLRIn[rData, 1]; drRB[pktLink]; drSRIn[rData, 1];

data.deviceIn ← data.deviceIn.link

drRBC[pushDst, rCount, const4];

drQADD[topAtop, rWorkPacket]; drRB[pktData];

drSRIn[rDevicePacket, pktDatum];

devicePacket.datum ← workPacket.data[count]

drQADD[pushA1, rCount];

drQBC[topAtop, constNI]; -- INT => CARDINAL coercion

drSRIn[rWorkPacket, pktDatum];

workPacket.datum ← count+1

drLRn[rDevicePacket]; drLFC[UseLabel16[enterQueuePacket]];

drJB[UseLabel8A[returnLabel]];

RETURN [QueuePacket[devicePacket]]

};

SetLabel[elseLabel];

};

drLFC[UseLabel16[enterWait]];

RETURN [Wait[]]

SetLabel[returnLabel];

drSRn[reg0];

ProcedureExit[1];

};

GenCreateWorker: PROC = {

CreateWorker: PROC

[identity: TaskIdentity, priority: TaskPriority, work: WorkQueue, state: TaskState]

rIdentity: RegSpec = reg0;

rPriority: RegSpec = reg1;

rWork: RegSpec = reg2;

rState: RegSpec = reg3;

G: RegSpec = reg4;

rData: RegSpec = reg5;

ProcedureEntry[enterCreateWorker, 4];

HandCodingPseudos.MakeLabelGlobal["Richards.CreateWorker", enterCreateWorker];

drLIQB[globalFrame];

drLC0[];

{

data: WorkerTaskData ← z.NEW[WorkerTaskDataRecord ← [handlerA, 0]];

drLRIn[G, gZ]; drLIB[2];

drLRIn[G, gZ]; drRB[0]; drRB[0]; drSFC[]; drSRn[rData];

drLC3[]; drSRIn[rData, 0];

drLC0[]; drSRIn[rData, 1];

};

{

CreateTask[identity, priority, work, state, WorkFunction, data];

drLRn[rIdentity]; drLRn[rPriority]; drLRn[rWork]; drLRn[rState];

drLRn[G]; drADDB[gWorkFunction]; drLRn[rData];

drLFC[UseLabel16[enterCreateTask]];

};

ProcedureExit[0];

};

GenWorkFunction: PROC = {

WorkFunction: TaskOperation

== [work: WorkQueue, word: LONG POINTER] RETURNS [t: Task]

rWork: RegSpec = reg0;

rWord: RegSpec = reg1;

G: RegSpec = reg2;

rT: RegSpec = reg3;

rData: RegSpec = reg4;

returnLabel: Label = GenLabel[];

ProcedureEntry[enterWorkFunction, 2+1];

HandCodingPseudos.MakeLabelGlobal["Richards.WorkFunction", enterWorkFunction];

drSUBB[gWorkFunction]; -- a pointer into the global frame is an implcit argument

drLC0[];

drLRn[rWord];

data: IdleTaskData ← word

{elseLabel: Label = GenLabel[];

drLRn[rWork]; drJNEBB[0, UseLabel8B[elseLabel]];

IF work = noWork THEN

drLFC[UseLabel16[enterWait]]; drJB[UseLabel8A[returnLabel]];

RETURN [Wait[]]

SetLabel[elseLabel];

{

data.destination ←

(IF data.destination = handlerA THEN handlerB ELSE handlerA);

drLC3[];

drLRIn[rData, 0]; drJNEBB[3, 6];

drROR[topDst, const0, const4];

drSRIn[rData, 0];

};

drLRIn[rData, 0]; drSRIn[rWork, pktIdentity];

work.identity ← data.destination

drLC0[]; drSRIn[rWork, pktDatum];

work.datum ← 0

{

rI: RegSpec = reg5;

rLimit: RegSpec = reg6;

testLabel: Label = GenLabel[];

loopLabel: Label = GenLabel[];

drLC0[];

drLC3[];

drJB[UseLabel8A[testLabel]];

HandCodingSupport.WordAlign[];

SetLabel[loopLabel];

drLRIn[rData, 1]; drRVADD[topDst, topSrc, const1]; drSRIn[rData, 1];

data.count ← data.count+1;

{elseLabel: Label = GenLabel[];

IF data.count > 26 THEN data.count ← 1;

drLRIn[rData, 1]; drRXOR[topDst, topSrc, constNI];

drLIB[26]; drRXOR[topDst, topSrc, constNI];

drRJGEBJ[left: popSrc, right: belowSrcPop, dist: UseLabel8B[elseLabel]];

drLC1[]; drSRIn[rData, 1];

SetLabel[elseLabel];

};

drLRIn[rData, 1]; drADDB[100B];

drRBC[pushDst, rI, const4];

drQADD[topAtop, rWork]; drWB[pktData];

work.data[i] ← ('A-0C)+data.count-1;

drRADD[rI, rI, const1];

SetLabel[testLabel];

drRJGEBJ[left: topSrc, right: rI, dist: UseLabel8B[loopLabel]];

drAS[256-2];

ENDLOOP

};

drLRn[rWork]; drLFC[UseLabel16[enterQueuePacket]];

RETURN [QueuePacket[work]]

};

SetLabel[returnLabel];

drSRn[reg0];

ProcedureExit[1];

};

GenMain: PROC = {

Main: PROC RETURNS [time: REAL]

rTime: RegSpec = reg0;

G: RegSpec = reg1;

rWorkQ: RegSpec = reg2;

rPulses: RegSpec = reg3;

ProcedureEntry[enterMain, 0];

HandCodingPseudos.MakeLabelGlobal["Richards.Main", enterMain];

workQ: WorkQueue;

pulses: BasicTime.Pulses = BasicTime.GetClockPulses[];

drLC0[]; drLIQB[globalFrame];

drLC0[]; drLC0[];

init rTime, G, rWorkQ, rPulses

drLFC[UseLabel16[enterInitScheduler]];

InitScheduler[]

drLC1[]; drLC0[]; drLC0[]; drLC0[];

drLFC[UseLabel16[enterCreateIdler]];

CreateIdler[idler, 0, noWork, running]

drLC0[]; drLC2[]; drLC1[]; drLFC[UseLabel16[enterCreatePacket]]; drSRn[rWorkQ];

workQ ← CreatePacket[noWork, worker, workPacketKind];

drLRn[rWorkQ]; drLC2[]; drLC1[]; drLFC[UseLabel16[enterCreatePacket]]; drSRn[rWorkQ];

workQ ← CreatePacket[workQ, worker, workPacketKind];

drLC2[]; drLIDB[1000]; drLRn[rWorkQ]; drLIQB[waitingWithPacket];

drLFC[UseLabel16[enterCreateWorker]];

CreateWorker[worker, 1000, workQ, waitingWithPacket];

drLC0[]; drLIB[5]; drLC0[]; drLFC[UseLabel16[enterCreatePacket]]; drSRn[rWorkQ];

workQ ← CreatePacket[noWork, deviceA, devicePacketKind];

drLRn[rWorkQ]; drLIB[5]; drLC0[]; drLFC[UseLabel16[enterCreatePacket]]; drSRn[rWorkQ];

workQ ← CreatePacket[workQ, deviceA, devicePacketKind];

drLRn[rWorkQ]; drLIB[5]; drLC0[]; drLFC[UseLabel16[enterCreatePacket]]; drSRn[rWorkQ];

workQ ← CreatePacket[workQ, deviceA, devicePacketKind];

drLC3[]; drLIDB[2000]; drLRn[rWorkQ]; drLIQB[waitingWithPacket];

drLFC[UseLabel16[enterCreateHandler]];

CreateHandler[handlerA, 2000, workQ, waitingWithPacket];

drLC0[]; drLIB[6]; drLC0[]; drLFC[UseLabel16[enterCreatePacket]]; drSRn[rWorkQ];

workQ ← CreatePacket[noWork, deviceB, devicePacketKind];

drLRn[rWorkQ]; drLIB[6]; drLC0[]; drLFC[UseLabel16[enterCreatePacket]]; drSRn[rWorkQ];

workQ ← CreatePacket[workQ, deviceB, devicePacketKind]

drLRn[rWorkQ]; drLIB[6]; drLC0[]; drLFC[UseLabel16[enterCreatePacket]]; drSRn[rWorkQ];

workQ ← CreatePacket[workQ, deviceB, devicePacketKind]

drLC4[]; drLIDB[2000]; drLRn[rWorkQ]; drLIQB[waitingWithPacket];

drLFC[UseLabel16[enterCreateHandler]];

CreateHandler[handlerB, 2000, workQ, waitingWithPacket]

drLIB[5]; drLIDB[4000]; drLC0[]; drLIQB[waiting];

drLFC[UseLabel16[enterCreateDevice]];

CreateDevice[deviceA, 4000, noWork, waiting]

drLIB[6]; drLIDB[5000]; drLC0[]; drLIQB[waiting];

drLFC[UseLabel16[enterCreateDevice]];

CreateDevice[deviceB, 5000, noWork, waiting];

drLFC[UseLabel16[enterSchedule]];

Schedule[]

drLRIn[G, gQueuePacketCount]; drLIDB[23246];

drRJEBJ[left: popSrc, right: belowSrcPop, dist: 6];

Halt[100B];

IF queuePacketCount # 23246 THEN ERROR Bogus

drLRIn[G, gHoldCount]; drLIDB[9297];

drRJEBJ[left: popSrc, right: belowSrcPop, dist: 6];

Halt[101B];

IF holdCount # 9297 THEN ERROR Bogus

drLRIn[G, gAllocObjects]; drLIDB[20];

drRJEBJ[left: popSrc, right: belowSrcPop, dist: 6];

Halt[102B];

IF allocObjects # 20 THEN ERROR Bogus

Halt[0];

ProcedureExit[1];

The following were not generated, since they are not really applicable in Dragon

IF allocWords # 140 THEN ERROR Bogus;

time ← BasicTime.PulsesToSeconds[BasicTime.GetClockPulses[] - pulses];

};

END.