[Indigo]<Dragon>Dragoman>RESIOps.mesa!1

RESIOps.mesa

Last Edited by: Sweet, March 7, 1985 9:39:33 am PST

DIRECTORY

Basics,

RESInterpreter,

PrincOps;

RESIOps: CEDAR PROGRAM IMPORTS Basics, RI: RESInterpreter EXPORTS RESInterpreter = {

OPEN PrincOps;

Types and Global Data

Value: TYPE = RI.Value;

DValue: TYPE = RI.DValue;

Ptr1: TYPE = RI.Ptr1;

Ptr2: TYPE = RI.Ptr2;

LPtr1: TYPE = RI.LPtr1;

LPtr2: TYPE = RI.LPtr2;

LCB: TYPE = RI.LCB;

Machine: TYPE = RI.Machine;

Byte: TYPE = RI.Byte;

Bytes: TYPE = RI.Bytes;

Pair: TYPE = RI.Pair;

FieldDescriptor: TYPE = PrincOps.FieldDescriptor;

SignedOpByte: PUBLIC PROC [m: Machine] RETURNS [INTEGER] = {

alpha: RECORD [SELECT OVERLAID * FROM

int => [i: INTEGER],

pair => [bp: RI.Bytes],

ENDCASE];

alpha.bp.b2 ← RI.NextOpByte[m];

IF alpha.bp.b2 > 177B THEN alpha.bp.b1 ← 377B

ELSE alpha.bp.b1 ← 0;

RETURN [alpha.i]};

DoSignedJump: PUBLIC PROC [m: Machine, savedPc: CARDINAL, op: Byte] = {

alpha: INTEGER = SignedOpByte[m];

op2: INTEGER = RI.IntV[RI.Pop[m]];

op1: INTEGER = RI.IntV[RI.Pop[m]];

SELECT op FROM

zJLB => IF op1 < op2 THEN RI.SetPc[m, savedPc + alpha];

zJGEB => IF op1 >= op2 THEN RI.SetPc[m, savedPc + alpha];

zJGB => IF op1 > op2 THEN RI.SetPc[m, savedPc + alpha];

zJLEB => IF op1 <= op2 THEN RI.SetPc[m, savedPc + alpha];

ENDCASE;

};

DoUnsignedJump: PUBLIC PROC [m: Machine, savedPc: CARDINAL, op: Byte] = {

alpha: INTEGER = SignedOpByte[m];

op2: CARDINAL = RI.CardV[RI.Pop[m]];

op1: CARDINAL = RI.CardV[RI.Pop[m]];

SELECT op FROM

zJULB => IF op1 < op2 THEN RI.SetPc[m, savedPc + alpha];

zJUGEB => IF op1 >= op2 THEN RI.SetPc[m, savedPc + alpha];

zJUGB => IF op1 > op2 THEN RI.SetPc[m, savedPc + alpha];

zJULEB => IF op1 <= op2 THEN RI.SetPc[m, savedPc + alpha];

zJNEB => IF op1 # op2 THEN RI.SetPc[m, savedPc + alpha];

zJEQB => IF op1 = op2 THEN RI.SetPc[m, savedPc + alpha];

ENDCASE;

};

DoMonitorOps: PUBLIC PROC [m: Machine, op: Byte] = {

SELECT op FROM

Monitor stuff

zNOOP => NULL;

zME => {

ShortEnter: PROC [Value] RETURNS [Value] = TRUSTED MACHINE CODE {zME};

LongEnter: PROC [DValue] RETURNS [Value] = TRUSTED MACHINE CODE {zME};

v: Value;

SELECT m.sd FROM

1 => v ← ShortEnter[RI.Pop[m]];

2 => v ← LongEnter[RI.Pop2[m]];

ENDCASE => RI.Confusion[m];

RI.Push[m, v]};

zMRE => {

ShortReEnter: PROC [mon, cond: Value] RETURNS [Value] = TRUSTED MACHINE CODE {zMRE};

LongReEnter: PROC [mon, cond: DValue] RETURNS [Value] = TRUSTED MACHINE CODE {zMRE};

v: Value;

SELECT m.sd FROM

2 => {

c: Value ← RI.Pop[m];

mon: Value ← RI.Pop[m];

v ← ShortReEnter[mon: mon, cond: c]};

4 => {

c: DValue ← RI.Pop2[m];

mon: DValue ← RI.Pop2[m];

v ← LongReEnter[mon: mon, cond: c]};

ENDCASE => RI.Confusion[m];

RI.Push[m, v]};

zMXW => {

ShortExitWait: PROC [mon, cond, timeout: Value] = TRUSTED MACHINE CODE {zMXW};

LongExitWait: PROC [mon, cond: DValue, timeout: Value] = TRUSTED MACHINE CODE {zMXW};

SELECT m.sd FROM

3 => {

t: Value ← RI.Pop[m];

c: Value ← RI.Pop[m];

mon: Value ← RI.Pop[m];

ShortExitWait[mon: mon, cond: c, timeout: t]};

5 => {

t: Value ← RI.Pop[m];

c: DValue ← RI.Pop2[m];

mon: DValue ← RI.Pop2[m];

LongExitWait[mon: mon, cond: c, timeout: t]};

ENDCASE => RI.Confusion[m];

};

zMXD => {

ShortExit: PROC [Value] = TRUSTED MACHINE CODE {zMXD};

LongExit: PROC [DValue] = TRUSTED MACHINE CODE {zMXD};

SELECT m.sd FROM

1 => ShortExit[RI.Pop[m]];

2 => LongExit[RI.Pop2[m]];

ENDCASE => RI.Confusion[m];

};

zNOTIFY => {

ShortNotify: PROC [Value] = TRUSTED MACHINE CODE {zNOTIFY};

LongNotify: PROC [DValue] = TRUSTED MACHINE CODE {zNOTIFY};

SELECT m.sd FROM

1 => ShortNotify[RI.Pop[m]];

2 => LongNotify[RI.Pop2[m]];

ENDCASE => RI.Confusion[m];

};

zBCAST => {

ShortBroadcast: PROC [Value] = TRUSTED MACHINE CODE {zNOTIFY};

LongBroadcast: PROC [DValue] = TRUSTED MACHINE CODE {zNOTIFY};

SELECT m.sd FROM

1 => ShortBroadcast[RI.Pop[m]];

2 => LongBroadcast[RI.Pop2[m]];

ENDCASE => RI.Confusion[m];

};

zREQUEUE => {

LongRequeue: PROC [from: DValue, to: DValue, p: Value] = TRUSTED MACHINE CODE {zREQUEUE};

ShortRequeue: PROC [from: Value, to: Value, p: Value] = TRUSTED MACHINE CODE {zREQUEUE};

SELECT m.sd FROM

3 => {

p: Value ← RI.Pop[m];

to: Value ← RI.Pop[m];

from: Value ← RI.Pop[m];

ShortRequeue[from: from, to: to, p: p]};

5 => {

p: Value ← RI.Pop[m];

to: DValue ← RI.Pop2[m];

from: DValue ← RI.Pop2[m];

LongRequeue[from: from, to: to, p: p]};

ENDCASE => RI.Confusion[m];

};

ENDCASE;

};

DoLocalOps: PUBLIC PROC [m: Machine, op: Byte] = TRUSTED {

SELECT op FROM

Loads & Stores of Locals

zLL0, zLL1, zLL2, zLL3, zLL4, zLL5, zLL6, zLL7 => {

n: CARDINAL ← op - zLL0;

p: POINTER TO Value = m.l+PrincOps.localbase+n;

RI.ReadLocal[m, n];

RI.Push[m, p^]};

zLLB => {

n: CARDINAL ← RI.NextOpByte[m];

p: POINTER TO Value = m.l+n;

RI.ReadLocal[m, n];

RI.Push[m, p^]};

zLLDB => {

n: CARDINAL ← RI.NextOpByte[m];

p: POINTER TO DValue = LOOPHOLE[m.l+n];

RI.DoubleReadLocal[m, n];

RI.Push2[m, p^]};

zSL0, zSL1, zSL2, zSL3, zSL4, zSL5, zSL6, zSL7 => {

n: CARDINAL ← op - zSL0;

p: POINTER TO Value = m.l+PrincOps.localbase+n;

RI.StoreLocal[m, n];

p^ ← RI.Pop[m]};

zSLB => {

n: CARDINAL ← RI.NextOpByte[m];

p: POINTER TO Value = m.l+n;

RI.StoreLocal[m, n];

p^ ← RI.Pop[m]};

zSLDB => {

n: CARDINAL ← RI.NextOpByte[m];

p: POINTER TO DValue = LOOPHOLE[m.l+n];

RI.DoubleStoreLocal[m, n];

p^ ← RI.Pop2[m]};

zPL0, zPL1, zPL2, zPL3 => {

n: CARDINAL ← op - zPL0;

p: POINTER TO Value = m.l+PrincOps.localbase+n;

RI.StoreLocal[m, n];

p^ ← RI.Top[m]};

ENDCASE;

};

DoGlobalOps: PUBLIC PROC [m: Machine, op: Byte] = TRUSTED {

SELECT op FROM

Loads & Stores of Globals

zLG0, zLG1, zLG2, zLG3, zLG4, zLG5, zLG6, zLG7 => {

n: CARDINAL ← op - zLG0;

RI.Push[m, RI.Read[m, LONG[m.g+PrincOps.globalbase+n]]]};

zLGB => {

n: CARDINAL ← RI.NextOpByte[m];

RI.Push[m, RI.Read[m, LONG[m.g+n]]]};

zLGDB => {

n: CARDINAL ← RI.NextOpByte[m];

RI.Push2[m, RI.ReadDouble[m, LOOPHOLE[LONG[m.g+n]]]]};

zSG0, zSG1, zSG2, zSG3 => {

n: CARDINAL ← op - zSG0;

RI.Write[m, m.g+PrincOps.globalbase+n, RI.Pop[m]]};

zSGB => {

n: CARDINAL ← RI.NextOpByte[m];

RI.Write[m, m.g+n, RI.Pop[m]]};

zSGDB => {

n: CARDINAL ← RI.NextOpByte[m];

RI.WriteDouble[m, LOOPHOLE[LONG[m.g+n]], RI.Pop2[m]]};

ENDCASE;

};

DoLiteralOps: PUBLIC PROC [m: Machine, op: Byte] = TRUSTED {

SELECT op FROM

Loads of Constants

zLI0, zLI1, zLI2, zLI3, zLI4, zLI5, zLI6 => {

n: CARDINAL ← op - zLI0;

RI.Push[m, RI.VCard[n]]};

zLIN1 => {RI.Push[m, RI.VInt[-1]]};

zLINI => {RI.Push[m, RI.VCard[100000B]]};

zLIB => {

n: CARDINAL ← RI.NextOpByte[m];

RI.Push[m, RI.VCard[n]]};

zLIW, zLCO => {

w: Bytes;

w.b1 ← RI.NextOpByte[m];

w.b2 ← RI.NextOpByte[m];

RI.Push[m, LOOPHOLE[w, Value]]};

zLINB => {

w: Bytes;

w.b1 ← 377B;

w.b2 ← RI.NextOpByte[m];

RI.Push[m, LOOPHOLE[w, Value]]};

zLADRB => {

n: CARDINAL ← RI.NextOpByte[m];

RI.Push[m, RI.VPtr1[m.l+n]]};

zGADRB => {

n: CARDINAL ← RI.NextOpByte[m];

RI.Push[m, RI.VPtr1[m.g+n]]};

ENDCASE;

};

DoReadOps: PUBLIC PROC [m: Machine, op: Byte] = TRUSTED {

SELECT op FROM

Reads from pointer on stack

zR0, zR1, zR2, zR3, zR4 => {

n: CARDINAL ← op - zR0;

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

RI.Push[m, RI.Read[m, LONG[p+n]]]};

zRB => {

n: CARDINAL ← RI.NextOpByte[m];

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

RI.Push[m, RI.Read[m, LONG[p+n]]]};

zRBL => {

n: CARDINAL ← RI.NextOpByte[m];

p: LPtr1 ← RI.LPtr1V[RI.Pop2[m]];

RI.Push[m, RI.Read[m, p+n]]};

zRD0 => {

n: CARDINAL ← 0;

p: Ptr2 ← RI.Ptr2V[RI.Pop[m]];

RI.Push2[m, RI.ReadDouble[m, LONG[p+n]]]};

zRDB => {

n: CARDINAL ← RI.NextOpByte[m];

p: Ptr2 ← RI.Ptr2V[RI.Pop[m]];

RI.Push2[m, RI.ReadDouble[m, LONG[p+n]]]};

zRDBL => {

n: CARDINAL ← RI.NextOpByte[m];

p: LPtr2 ← RI.LPtr2V[RI.Pop2[m]];

RI.Push2[m, RI.ReadDouble[m, p+n]]};

zRF => {

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

n: CARDINAL = RI.NextOpByte[m];

fd: FieldDescriptor ← LOOPHOLE[RI.NextOpByte[m]];

RI.Push[m, RI.ReadField[m, LONG[p+n], fd]]};

zRFL => {

p: LPtr1 ← RI.LPtr1V[RI.Pop2[m]];

n: CARDINAL = RI.NextOpByte[m];

fd: FieldDescriptor ← LOOPHOLE[RI.NextOpByte[m]];

RI.Push[m, RI.ReadField[m, p+n, fd]]};

ENDCASE;

};

DoWriteOps: PUBLIC PROC [m: Machine, op: Byte] = TRUSTED {

SELECT op FROM

Writes from pointer on stack

zWCDBL => {

DoCountedWrite: PROC [refVal: DValue, refLoc: LPtr2] = TRUSTED MACHINE CODE {zWCDBL, 0};

alpha: CARDINAL = RI.NextOpByte[m];

refLoc: LPtr2 ← RI.LPtr2V[RI.Pop2[m]] + alpha;

refVal: DValue ← RI.Pop2[m];

RefCount: TYPE = MACHINE DEPENDENT RECORD [filler (0:0..8): [0..777B], count (0:9..15): [0..177B]];

oldRef: LONG POINTER TO RefCount;

oldCount: NAT;

record various memory references

oldRef ← LOOPHOLE[RI.LPtr1V[RI.ReadDouble[m, refLoc]]];

IF oldRef # NIL THEN {

RI.ReadAtAddress[m, oldRef-2];

oldCount ← (oldRef-2).count;

IF oldCount = 2 (low bit is overflow, so this means decr will be to 0).

write to the ZCT (the microcode may be the only one that knows where)

RI.WriteAtAddress[m, oldRef-2];

};

RI.DoubleWriteAtAddress[m, refLoc];

RI.ReadAtAddress[m, RI.LPtr1V[refVal]-2]; -- increment ref count

RI.WriteAtAddress[m, RI.LPtr1V[refVal]-2];

DoCountedWrite[refVal: refVal, refLoc: refLoc];

};

zICDBL => {

DoCountedInitialize: PROC [refVal: DValue, refLoc: LPtr2] = TRUSTED MACHINE CODE {zICDBL, 0};

alpha: CARDINAL = RI.NextOpByte[m];

refLoc: LPtr2 ← RI.LPtr2V[RI.Pop2[m]] + alpha;

refVal: DValue ← RI.Pop2[m];

record various memory references

RI.DoubleWriteAtAddress[m, refLoc];

RI.ReadAtAddress[m, RI.LPtr1V[refVal]-2]; -- increment ref count

RI.WriteAtAddress[m, RI.LPtr1V[refVal]-2];

DoCountedInitialize[refVal: refVal, refLoc: refLoc];

};

zW0, zW1, zW2 => {

n: CARDINAL ← op - zW0;

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

v: Value ← RI.Pop[m];

RI.Write[m, LONG[p+n], v]};

zWB => {

n: CARDINAL ← RI.NextOpByte[m];

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

v: Value ← RI.Pop[m];

RI.Write[m, LONG[p+n], v]};

zWBL => {

n: CARDINAL ← RI.NextOpByte[m];

p: LPtr1 ← RI.LPtr1V[RI.Pop2[m]];

v: Value ← RI.Pop[m];

RI.Write[m, p+n, v]};

zWD0 => {

n: CARDINAL ← 0;

p: Ptr2 ← RI.Ptr2V[RI.Pop[m]];

v: DValue ← RI.Pop2[m];

RI.WriteDouble[m, LONG[p+n], v]};

zWDB => {

n: CARDINAL ← RI.NextOpByte[m];

p: Ptr2 ← RI.Ptr2V[RI.Pop[m]];

v: DValue ← RI.Pop2[m];

RI.WriteDouble[m, LONG[p+n], v]};

zWDBL => {

n: CARDINAL ← RI.NextOpByte[m];

p: LPtr2 ← RI.LPtr2V[RI.Pop2[m]];

v: DValue ← RI.Pop2[m];

RI.WriteDouble[m, p+n, v]};

zWF => {

n: CARDINAL ← RI.NextOpByte[m];

fd: FieldDescriptor ← LOOPHOLE[RI.NextOpByte[m]];

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

v: Value ← RI.Pop[m];

RI.WriteField[m, LONG[p+n], fd, v]};

zWFL => {

n: CARDINAL ← RI.NextOpByte[m];

fd: FieldDescriptor ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1 ← RI.LPtr1V[RI.Pop2[m]];

v: Value ← RI.Pop[m];

RI.WriteField[m, p+n, fd, v]};

ENDCASE;

};

DoReadIndirectOps: PUBLIC PROC [m: Machine, op: Byte] = TRUSTED {

SELECT op FROM

Read indirect through locals

zRXLP => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: Ptr1;

delta: CARDINAL ← RI.CardV[RI.Pop[m]];

RI.ReadLocal[m, PrincOps.localbase+pr.p1];

p ← RI.Ptr1V[(m.l+PrincOps.localbase+pr.p1)^];

RI.Push[m, RI.Read[m, LONG[p+delta+pr.p2]]]};

zRXLPL => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1;

delta: CARDINAL ← RI.CardV[RI.Pop[m]];

RI.DoubleReadLocal[m, PrincOps.localbase+pr.p1];

p ← RI.LPtr1V[LOOPHOLE[(m.l+PrincOps.localbase+pr.p1), Ptr2]^];

RI.Push[m, RI.Read[m, p+delta+pr.p2]]};

zRXGPL => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1;

delta: CARDINAL ← RI.CardV[RI.Pop[m]];

p ← RI.LPtr1V[RI.ReadDouble[m, LOOPHOLE[LONG[m.g+PrincOps.globalbase+pr.p1]]]];

RI.Push[m, RI.Read[m, p+delta+pr.p2]]};

zRILP => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: Ptr1;

RI.ReadLocal[m, PrincOps.localbase+pr.p1];

p ← RI.Ptr1V[(m.l+PrincOps.localbase+pr.p1)^];

RI.Push[m, RI.Read[m, LONG[p+pr.p2]]]};

zRILPL => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1;

RI.DoubleReadLocal[m, PrincOps.localbase+pr.p1];

p ← RI.LPtr1V[LOOPHOLE[(m.l+PrincOps.localbase+pr.p1), Ptr2]^];

RI.Push[m, RI.Read[m, p+pr.p2]]};

zRIGP => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: Ptr1;

ReadGlobal[pr.p1];

p ← RI.Ptr1V[RI.Read[m, LONG[m.g+PrincOps.globalbase+pr.p1]]];

RI.Push[m, RI.Read[m, LONG[p+pr.p2]]]};

zRIGPL => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1;

ReadGlobalDouble[pr.p1];

p ← RI.LPtr1V[RI.ReadDouble[m, LOOPHOLE[LONG[m.g+PrincOps.globalbase+pr.p1]]]];

RI.Push[m, RI.Read[m, p+pr.p2]]};

zRIL0 => {

p: Ptr1;

RI.ReadLocal[m, PrincOps.localbase];

p ← RI.Ptr1V[(m.l+PrincOps.localbase)^];

RI.Push[m, RI.Read[m, LONG[p]]]};

ENDCASE;

};

DoWriteIndirectOps: PUBLIC PROC [m: Machine, op: Byte] = TRUSTED {

SELECT op FROM

Write indirect through locals

zWXLP => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: Ptr1;

delta: CARDINAL ← RI.CardV[RI.Pop[m]];

RI.ReadLocal[m, PrincOps.localbase+pr.p1];

p ← RI.Ptr1V[(m.l+PrincOps.localbase+pr.p1)^];

RI.Write[m, LONG[p+delta+pr.p2], RI.Pop[m]]};

zWXLPL => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1;

delta: CARDINAL ← RI.CardV[RI.Pop[m]];

RI.DoubleReadLocal[m, PrincOps.localbase+pr.p1];

p ← RI.LPtr1V[LOOPHOLE[(m.l+PrincOps.localbase+pr.p1), Ptr2]^];

RI.Write[m, p+delta+pr.p2, RI.Pop[m]]};

zWXGPL => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1;

delta: CARDINAL ← RI.CardV[RI.Pop[m]];

p ← RI.LPtr1V[RI.ReadDouble[m, LOOPHOLE[LONG[m.g+PrincOps.globalbase+pr.p1]]]];

RI.Write[m, p+delta+pr.p2, RI.Pop[m]]};

zWILP => {

pr: Pair ← LOOPHOLE[ RI.NextOpByte[m]];

p: Ptr1;

RI.ReadLocal[m, PrincOps.localbase+pr.p1];

p ← RI.Ptr1V[(m.l+PrincOps.localbase+pr.p1)^];

RI.Write[m, LONG[p+pr.p2], RI.Pop[m]]};

zWILPL => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1;

RI.DoubleReadLocal[m, PrincOps.localbase+pr.p1];

p ← RI.LPtr1V[LOOPHOLE[(m.l+PrincOps.localbase+pr.p1), Ptr2]^];

RI.Write[m, p+pr.p2, RI.Pop[m]]};

zWIGPL => {

pr: Pair ← LOOPHOLE[RI.NextOpByte[m]];

p: LPtr1;

p ← RI.LPtr1V[RI.ReadDouble[m, LOOPHOLE[LONG[m.g+PrincOps.globalbase+pr.p1]]]];

RI.Write[m, p+pr.p2, RI.Pop[m]]};

ENDCASE;

};

DoWriteSwappedOps: PUBLIC PROC [m: Machine, op: Byte] = TRUSTED {

SELECT op FROM

Write Swapped

zWS0 => {

n: CARDINAL ← 0;

v: Value ← RI.Pop[m];

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

RI.Write[m, LONG[p+n], v]};

zWSB => {

n: CARDINAL ← RI.NextOpByte[m];

v: Value ← RI.Pop[m];

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

RI.Write[m, LONG[p+n], v]};

zWSDB => {

n: CARDINAL ← RI.NextOpByte[m];

v: DValue ← RI.Pop2[m];

p: Ptr2 ← RI.Ptr2V[RI.Pop[m]];

RI.WriteDouble[m, LONG[p+n], v]};

zWSF => {

n: CARDINAL ← RI.NextOpByte[m];

fd: FieldDescriptor ← LOOPHOLE[RI.NextOpByte[m]];

v: Value ← RI.Pop[m];

p: Ptr1 ← RI.Ptr1V[RI.Pop[m]];

RI.WriteField[m, LONG[p+n], fd, v]};

ENDCASE;

};

DoShortArithmetic: PUBLIC PROC [m: Machine, op: Byte] = {

SELECT op FROM

Short arithmetic

zADD, zADD01 => {

c2: CARDINAL = RI.CardV[RI.Pop[m]];

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push[m, RI.VCard[c1+c2]]};

zSUB => {

c2: CARDINAL = RI.CardV[RI.Pop[m]];

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push[m, RI.VCard[c1-c2]]};

zMUL => {

c2: CARDINAL = RI.CardV[RI.Pop[m]];

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push2[m, RI.VLCard[Basics.LongMult[c1, c2]]];

m.sd ← m.sd - 1};

zDBL => {

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push[m, RI.VCard[c1*2]]};

zDIV => {

c2: CARDINAL = RI.CardV[RI.Pop[m]];

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push2[m, DivMod[c1, c2]];

m.sd ← m.sd - 1};

zLDIV => {

c2: CARDINAL = RI.CardV[RI.Pop[m]];

c1: LONG CARDINAL = RI.LCardV[RI.Pop2[m]];

RI.Push2[m, LongDivMod[c1, c2]];

m.sd ← m.sd - 1};

zNEG => {

c1: INTEGER = RI.IntV[RI.Pop[m]];

RI.Push[m, RI.VInt[-c1]]};

zINC => {

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push[m, RI.VCard[c1+1]]};

zAND => {

c2: CARDINAL = RI.CardV[RI.Pop[m]];

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push[m, RI.VCard[Basics.BITAND[c1, c2]]]};

zOR => {

c2: CARDINAL = RI.CardV[RI.Pop[m]];

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push[m, RI.VCard[Basics.BITOR[c1, c2]]]};

zXOR => {

c2: CARDINAL = RI.CardV[RI.Pop[m]];

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push[m, RI.VCard[Basics.BITXOR[c1, c2]]]};

zSHIFT => {

c2: INTEGER = RI.IntV[RI.Pop[m]];

c1: CARDINAL = RI.CardV[RI.Pop[m]];

RI.Push[m, RI.VCard[Basics.BITSHIFT[c1, c2]]]};

ENDCASE;

};

machine codes used above

DivMod: PROC [c1, c2: CARDINAL] RETURNS [DValue] = TRUSTED MACHINE CODE {

zDIV; zPUSH};

LongDivMod: PROC [c1: LONG CARDINAL, c2: CARDINAL] RETURNS [qr: DValue] = TRUSTED MACHINE CODE {

zLDIV; zPUSH};