{ NewProlog.dfn
last edit: 23-Apr-85 16:20:02
by don: 16-Apr-85 14:20:18
}
{
Copyright 1985 Xerox Corporation. All rights reserved.
This is unpublished proprietary software and or documentation.
Information contained here is proprietary to Xerox and is for Xerox internal use and is furnished to others only under a confidential disclosure agreement.
}
{ PROLOG MACROs and constants}
Set[PrologOpValue, 500],
MacroDef[UI, ( GOTO[UI2], c1, at[Add[#1, PrologOpValue]])];
MacroDef[PrologOp, ( c1, at[Add[#1, PrologOpValue]])];
MacroDef[OddW, (CANCELBR[$, 2], LOOPHOLE[wok])];
MacroDef[PrReadMode, (L2 ← 0)];
MacroDef[PrWriteMode, (L2 ← 1)];
{ PROLOG U REGISTERS }
{ P prolog program pointer }
{ uses Lisp regs rhPC and PC }
{RegDef[rhPC, RH, 05],
RegDef[PC, R, 05],}
RegDef[upLVPChi, U, 016],
RegDef[upVPChi, U, 026],
RegDef[upVPClo, U, 01C],
{ B last choice point (backtrack point) (local stack) }
{ uses Lisp regs rhTOSH and TOSH }
RegDef[rhBB, RH, 01],
RegDef[BB, R, 01],
RegDef[uprhB, U, 0CC],
RegDef[upB, U, 0CD],
{ H top of heap }
{ uses Lisp regs rhS and S }
RegDef[rhHH, RH, 04],
RegDef[HH, R, 04],
RegDef[uprhHH, U, 0DD],
RegDef[upHH, U, 0DF],
{ S structure pointer (heap) }
{ uses Lisp regs rhTOS and TOS }
RegDef[rhSS, RH, 00],
RegDef[SS, R, 00],
RegDef[uprhSS, U, 0E3],
RegDef[upSS, U, 0E5],
{ C XXX }
RegDef[rhCC, RH, 03],
RegDef[CC, R, 03],
RegDef[uprhCC, U, 0E9],
RegDef[upCC, U, 0EA],
{ CP continuation program pointer }
RegDef[uprhCP, U, 09A],
RegDef[upCP, U, 03D],
{ E last environment (local stack) }
RegDef[uprhE, U, 0CE],
RegDef[upE, U, 0D3],
{ TR top of trail }
RegDef[uprhTR, U, 0D9],
RegDef[upTR, U, 0DA],
{ HB heap backtrack point (H value corresponding to B) }
RegDef[uprhHB, U, 0DB],
RegDef[upHB, U, 0DC],
{ R XXX }
RegDef[uprhR, U, 0E7],
RegDef[upR, U, 0E8],
{ B0 XXX }
RegDef[uprhB0, U, 0BD],
RegDef[upLB0, U, 0C1],
RegDef[upB0, U, 019],
{ N alpha byte of instruction }
RegDef[upN, U, 09B],
{ I temp used by lisp interpreter }
RegDef[upI, U, 06E],
{ T0 XXX }
RegDef[uphiT0, U, 0BA],
RegDef[upT0, U, 0BC],
{ T1 XXX }
RegDef[uphiT1, U, 09F],
RegDef[upT1, U, 0B1],
RegDef[upDebug, U, 03C],{conains 0 if no debug, 1 if single step, 17 if careful}
RegDef[upWriteMode, U, 036],{contains 256 if Write-Mode true, else 0}
RegDef[uLMBbase, U, 06C],{real addr of Lisp/Microcode table as (Bits 8 to 15,,Bits 0 to 7) of the 24 bit base address}
RegDef[uSQtablebase, U, 06B],{real addr of base of SELECTQ arms table as (Bits 8 to 15,,Bits 0 to 7) of the 24 bit base address}
RegDef[uSQbasehi, U, 05E],{virtual address of code base used by SQ offsets}
RegDef[uSQbaselo, U, 05F],{virtual address of code base used by SQ offsets}
RegDef[upVMlim, U, 09C],{contains the smallest virtual address above Prolog's VM in the form (Bits 8 to 15,,Bits 0 to 7) of the address. (The address always ends in eight zeros.)}
RegDef[upA0Base, U, 09E],RegDef[upA1Base, U, 09D],{contain real addresses of base of memory A registers as (Bits 8 to 15,,Bits 0 to 7) of the 24 bit base addresses. The tables are page alligned, and locked in memory while Prolog is running}
RegDef[upPFcont, U, 04E],{continuation point after a page fault if non-zero}
RegDef[upStep, U, 03E],{toggles upon execution of @PROLOGOPFETCHPLUSOPDISP, will stop if # 0}
{ registers saving Lisp state}
RegDef[upTOS, U, 051],
RegDef[upTOSH, U, 052],
RegDef[upPV, U, 053],
RegDef[upPC, U, 054],
RegDef[upS, U, 055],
RegDef[upPC16, U, 056],
{ Values for Prolog A regs }
RegDef[upPRA1hi, U, 000],
RegDef[upPRA1lo, U, 001],
RegDef[upPRA2hi, U, 002],
RegDef[upPRA2lo, U, 003],
RegDef[upPRA3hi, U, 004],
RegDef[upPRA3lo, U, 005],
RegDef[upPRA4hi, U, 006],
RegDef[upPRA4lo, U, 007],
{ Values for Prolog A regs saved }
RegDef[upA1hi, U, 014],
RegDef[upA1lo, U, 015],
RegDef[upA2hi, U, 0ED],
RegDef[upA2lo, U, 0EE],
RegDef[upA3hi, U, 0EB],
RegDef[upA3lo, U, 0EC],
RegDef[upA4hi, U, 011],
RegDef[upA4lo, U, 012],
{ Saved Prolog regs}
RegDef[upSave, U, 048],
RegDef[upUnPC, U, 03F],
RegDef[upKK, U, 06A],{safe}
{ Temporary Prolog regs}
RegDef[upTT, U, 027],
RegDef[upTemp, U, 035],
RegDef[upTemp1, U, 037],
RegDef[upTemp2, U, 038],
RegDef[upTemp3, U, 041],
RegDef[upTemp4, U, 042],
RegDef[upTemp5, U, 043],
RegDef[UPblock0, UY, 00],
RegDef[UPblock1, UY, 01],
RegDef[UPblock2, UY, 02],
RegDef[UPblock3, UY, 03],
RegDef[UPblock4, UY, 04],
RegDef[UPblock5, UY, 05],
RegDef[UPblock6, UY, 06],
RegDef[UPblock7, UY, 07],
RegDef[UPblock8, UY, 08],
RegDef[UPblock9, UY, 09],
RegDef[UPblockA, UY, 0A],
RegDef[UPblockB, UY, 0B],
RegDef[UPblockC, UY, 0C],
RegDef[UPblockD, UY, 0D],
RegDef[UPblockE, UY, 0E],
RegDef[UPblockF, UY, 0F],
Set[PrologBank, 00],
Set[PrologToLisp, 141],
Set[LispToProlog, 142],
{ TAGS }
Set[Pr.ref.tag.val, 000],
Set[Pr.struct.tag.val, 048],
Set[Pr.list.tag.val, 080],
Set[Pr.symbol.tag.val, 0C8],
Set[Pr.immed.tag.val, 0D9],
Set[Pr.boxed.tag.val, 0E9],
Set[Pr.float.tag.val, 0F8],
{ after XDisp on high nibble, use the following catches: }
Set[Pr.ref.tag.7, 00],
Set[Pr.struct.tag.7, 04],
Set[Pr.list.tag.7, 08],
Set[Pr.symbol.tag.7, 0C],
Set[Pr.immed.tag.7, 0D],
Set[Pr.boxed.tag.7, 0E],
Set[Pr.float.tag.7, 0F],
{ after XHDisp, use the following catches: }
Set[Pr.ref.tag.4, 00],
Set[Pr.struct.tag.4, 02],
Set[Pr.list.tag.4, 01],
Set[Pr.other.tag.4, 03],
{ returns from PrRMapFix in bank 0}
{ odd values are used if VPC/PC is correct
even values are used if VPC/PC is +1}
Set[L0.PrR1.24, 01];{PrR1}
Set[L0.PC4a, 3],
Set[L0.PCcont, 7],
Set[L0.PrExu2, 9];
Set[L0.PFPC4b, 0B];
Set[L0.PFPCdc, 0D];
Set[L0.PC2, 2],
Set[L0.PC4b, 4],
Set[L0.PrExu1, 8];
Set[L0.PCPFcont, 0A];
Set[L0.PrExu3, 0F];
{the following values are used when returning to Lisp}
Set[L1.PrDebugSS, 1],
Set[L1.PrInt, 2],
Set[L1.PrDebugC, 3],
Set[L1.PrPF, 4],
Set[L1.PrUI, 5],
Set[L1.PrHeapErr, 6],
Set[L1.PrSink, 7],
{ return values for ReadSomeU }
Set[L2.ReadUHi, 01],
Set[L2.ReadULo, 02],
Set[L2.ReadUTag, 03],
{ return values for WriteSomeU }
Set[L2.WriteUhi, 01],
Set[L2.WriteUlo, 02];
{ L1 values for get.Ai.symbol, get.Ai.constant, get.Ai.nil }
Set[L1.twobyte, 00];{get.Ai.nil}
Set[L1.fourbyte, 01];{get.Ai.symbol}
Set[L1.sixbyte, 02];{get.Ai.constant}
{ PF restart points:
PrR1:
PF15
PrR2
PF10 PF11
PrR3
PF13 PF55 PF5A PF5B
PrR4
PF58
PrR5
none
PrR6
PF53 PF54
PrR7
PF29 PF2A PF2B PF2C PF2D PF2E PF02
PrR10
none
PrUUn1
none
PrUn1
PF28 PF20 PF21 PF22 PF23 PF24 PF25 PF26 PF27
PrUn2
none
PrUn3
PF30 PF31 PF32 PF33 PF34 PF35 PF36 PF37
PF38 PF39 PF3A PF3B PF3C PF3D PF3E
PrUn4
PF41 PF42 PF43 PF44 PF45
PrUn5
PF51 PF52 PF59
}
{ E N D }