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Only adjust frame pointer for ENTER/LEAVE

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This commit is contained in:
David Schmenk 2018-01-17 21:13:16 -08:00
parent 3b2c80b718
commit 5ac6a556c8
4 changed files with 119 additions and 166 deletions
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192
src/vmsrc/plvm01.s
View File

@ -9,7 +9,7 @@ SELFMODIFY = 1
;*
;* VM ZERO PAGE LOCATIONS
;*
!SOURCE "vmsrc/plvmzp.inc"
!SOURCE "vmsrc/plvmzp.inc"
DVSIGN = TMP+2
DROP = $EF
NEXTOP = $F0
@ -22,11 +22,11 @@ OPPAGE = OPIDX+1
;*
;* INTERPRETER INSTRUCTION POINTER INCREMENT MACRO
;*
!MACRO INC_IP {
INY
BNE *+4
INC IPH
}
!MACRO INC_IP {
INY
BNE *+4
INC IPH
}
;*
;* INTERPRETER HEADER+INITIALIZATION
;*
@ -36,14 +36,14 @@ SEGBEGIN JMP VMINIT
;* SYSTEM INTERPRETER ENTRYPOINT
;*
INTERP PLA
CLC
ADC #$01
CLC
ADC #$01
STA IPL
PLA
ADC #$00
ADC #$00
STA IPH
LDY #$00
JMP FETCHOP
LDY #$00
JMP FETCHOP
;*
;* ENTER INTO USER BYTECODE INTERPRETER
;*
@ -51,14 +51,14 @@ IINTERP PLA
STA TMPL
PLA
STA TMPH
LDY #$02
LDA (TMP),Y
STA IPH
DEY
LDA (TMP),Y
STA IPL
LDY #$02
LDA (TMP),Y
STA IPH
DEY
JMP FETCHOP
LDA (TMP),Y
STA IPL
DEY
JMP FETCHOP
;*
;* MUL TOS-1 BY TOS
;*
@ -121,13 +121,13 @@ COMP LDA #$FF
;*
!ALIGN 255,0
OPTBL !WORD ZERO,ADD,SUB,MUL,DIV,MOD,INCR,DECR ; 00 02 04 06 08 0A 0C 0E
!WORD NEG,COMP,BAND,IOR,XOR,SHL,SHR,IDXW ; 10 12 14 16 18 1A 1C 1E
!WORD LNOT,LOR,LAND,LA,LLA,CB,CW,CS ; 20 22 24 26 28 2A 2C 2E
!WORD DROP,DUP,NEXTOP,DIVMOD,BRGT,BRLT,BREQ,BRNE ; 30 32 34 36 38 3A 3C 3E
!WORD ISEQ,ISNE,ISGT,ISLT,ISGE,ISLE,BRFLS,BRTRU ; 40 42 44 46 48 4A 4C 4E
!WORD BRNCH,IBRNCH,CALL,ICAL,ENTER,LEAVE,RET,CFFB ; 50 52 54 56 58 5A 5C 5E
!WORD LB,LW,LLB,LLW,LAB,LAW,DLB,DLW ; 60 62 64 66 68 6A 6C 6E
!WORD SB,SW,SLB,SLW,SAB,SAW,DAB,DAW ; 70 72 74 76 78 7A 7C 7E
!WORD NEG,COMP,BAND,IOR,XOR,SHL,SHR,IDXW ; 10 12 14 16 18 1A 1C 1E
!WORD LNOT,LOR,LAND,LA,LLA,CB,CW,CS ; 20 22 24 26 28 2A 2C 2E
!WORD DROP,DUP,NEXTOP,DIVMOD,BRGT,BRLT,BREQ,BRNE ; 30 32 34 36 38 3A 3C 3E
!WORD ISEQ,ISNE,ISGT,ISLT,ISGE,ISLE,BRFLS,BRTRU ; 40 42 44 46 48 4A 4C 4E
!WORD BRNCH,IBRNCH,CALL,ICAL,ENTER,LEAVE,RET,CFFB ; 50 52 54 56 58 5A 5C 5E
!WORD LB,LW,LLB,LLW,LAB,LAW,DLB,DLW ; 60 62 64 66 68 6A 6C 6E
!WORD SB,SW,SLB,SLW,SAB,SAW,DAB,DAW ; 70 72 74 76 78 7A 7C 7E
;*
;* DIV TOS-1 BY TOS
;*
@ -921,90 +921,90 @@ CALLADR JSR $FFFF
;*
;* INDIRECT CALL TO ADDRESS (NATIVE CODE)
;*
ICAL LDA ESTKL,X
STA ICALADR+1
LDA ESTKH,X
STA ICALADR+2
INX
TYA
CLC
ADC IPL
PHA
LDA IPH
ADC #$00
PHA
ICALADR JSR $FFFF
PLA
STA IPH
PLA
STA IPL
LDY #$01
JMP FETCHOP
ICAL LDA ESTKL,X
STA ICALADR+1
LDA ESTKH,X
STA ICALADR+2
INX
TYA
CLC
ADC IPL
PHA
LDA IPH
ADC #$00
PHA
ICALADR JSR $FFFF
PLA
STA IPH
PLA
STA IPL
LDY #$01
JMP FETCHOP
;*
;* ENTER FUNCTION WITH FRAME SIZE AND PARAM COUNT
;*
ENTER INY
LDA (IP),Y
PHA ; SAVE ON STACK FOR LEAVE
EOR #$FF
SEC
ADC IFPL
STA IFPL
BCS +
DEC IFPH
+ INY
LDA (IP),Y
BEQ +
ASL
TAY
- LDA ESTKH,X
DEY
STA (IFP),Y
LDA ESTKL,X
INX
DEY
STA (IFP),Y
BNE -
+ LDY #$03
JMP FETCHOP
LDA (IP),Y
EOR #$FF
SEC
ADC IFPL
STA IFPL
BCS +
DEC IFPH
+ INY
LDA (IP),Y
BEQ +
ASL
TAY
- LDA ESTKH,X
DEY
STA (IFP),Y
LDA ESTKL,X
INX
DEY
STA (IFP),Y
BNE -
+ LDY #$03
JMP FETCHOP
;*
;* LEAVE FUNCTION
;*
LEAVE PLA
CLC
ADC IFPL
STA IFPL
BCS LIFPH
RTS
LIFPH INC IFPH
LEAVE +INC_IP
LDA (IP),Y
CLC
ADC IFPL
STA IFPL
BCS LIFPH
RTS
LIFPH INC IFPH
RET RTS
A1CMD !SOURCE "vmsrc/a1cmd.a"
SEGEND = *
VMINIT LDY #$10 ; INSTALL PAGE 0 FETCHOP ROUTINE
- LDA PAGE0-1,Y
STA DROP-1,Y
DEY
BNE -
STY IFPL ; INIT FRAME POINTER
LDA #$80
STA IFPH
LDA #<SEGEND ; SAVE HEAP START
STA SRCL
LDA #>SEGEND
STA SRCH
LDX #ESTKSZ/2 ; INIT EVAL STACK INDEX
SEGEND = *
VMINIT LDY #$10 ; INSTALL PAGE 0 FETCHOP ROUTINE
- LDA PAGE0-1,Y
STA DROP-1,Y
DEY
BNE -
STY IFPL ; INIT FRAME POINTER
LDA #$80
STA IFPH
LDA #<SEGEND ; SAVE HEAP START
STA SRCL
LDA #>SEGEND
STA SRCH
LDX #ESTKSZ/2 ; INIT EVAL STACK INDEX
JMP A1CMD
PAGE0 = *
!PSEUDOPC DROP {
;*
;* INTERP BYTECODE INNER LOOP
;*
INX ; DROP
INY ; NEXTOP
BEQ NEXTOPH
LDA $FFFF,Y ; FETCHOP @ $F3, IP MAPS OVER $FFFF @ $F4
STA OPIDX
JMP (OPTBL)
NEXTOPH INC IPH
BNE FETCHOP
INX ; DROP
INY ; NEXTOP
BEQ NEXTOPH
LDA $FFFF,Y ; FETCHOP @ $F3, IP MAPS OVER $FFFF @ $F4
STA OPIDX
JMP (OPTBL)
NEXTOPH INC IPH
BNE FETCHOP
}

48
src/vmsrc/plvm02.s
View File

@ -197,14 +197,6 @@ DINTRP PLA
PLA
ADC #$00
STA IPH
LDA IFPH
PHA ; SAVE ON STACK FOR LEAVE/RET
LDA IFPL
PHA ; SAVE ON STACK FOR LEAVE/RET
LDA PPL ; SET FP TO PP
STA IFPL
LDA PPH
STA IFPH
LDY #$00
!IF SELFMODIFY {
BEQ +
@ -224,14 +216,6 @@ IINTRP PLA
LDA (TMP),Y
STA IPL
DEY
LDA IFPH
PHA ; SAVE ON STACK FOR LEAVE/RET
LDA IFPL
PHA ; SAVE ON STACK FOR LEAVE/RET
LDA PPL ; SET FP TO PP
STA IFPL
LDA PPH
STA IFPH
+ LDA #>OPTBL
STA OPPAGE
!IF SELFMODIFY {
@ -254,14 +238,6 @@ IINTRPX PHP
LDA (TMP),Y
STA IPL
DEY
LDA IFPH
PHA ; SAVE ON STACK FOR LEAVE/RET
LDA IFPL
PHA ; SAVE ON STACK FOR LEAVE/RET
LDA PPL ; SET FP TO PP
STA IFPL
LDA PPH
STA IFPH
LDA #>OPXTBL
STA OPPAGE
STA ALTRDON
@ -1540,7 +1516,11 @@ JMPTMP JMP (TMP)
;*
;* ENTER FUNCTION WITH FRAME SIZE AND PARAM COUNT
;*
ENTER INY
ENTER LDA IFPH
PHA ; SAVE ON STACK FOR LEAVE
LDA IFPL
PHA
INY
LDA (IP),Y
EOR #$FF ; ALLOCATE FRAME
SEC
@ -1571,7 +1551,6 @@ ENTER INY
;*
LEAVEX +INC_IP
LDA (IP),Y
STA ALTRDOFF
CLC
ADC IFPL
STA PPL
@ -1582,6 +1561,7 @@ LEAVEX +INC_IP
STA IFPL
PLA
STA IFPH
RETX STA ALTRDOFF
LDA PSR
PHA
PLP
@ -1598,20 +1578,6 @@ LEAVE +INC_IP
STA IFPL
PLA
STA IFPH
RTS
;
RETX STA ALTRDOFF
LDA PSR
PHA
PLP
RET LDA IFPL ; DEALLOCATE POOL
STA PPL
LDA IFPH
STA PPH
PLA ; RESTORE PREVIOUS FRAME
STA IFPL
PLA
STA IFPH
RTS
RET RTS
VMEND = *
}

25
src/vmsrc/plvm03.s
View File

@ -130,6 +130,7 @@ INTERP PLA
PLA
ADC #$00
STA IPH
LDA IFPH
PHA ; SAVE ON STACK FOR LEAVE/RET
LDA IFPL
@ -138,6 +139,7 @@ INTERP PLA
STA IFPL
LDA PPH
STA IFPH
LDY #$00
STY IPX
JMP FETCHOP
@ -158,6 +160,7 @@ XINTERP PLA
LDA (TMP),Y
STA IPL
DEY
LDA IFPH
PHA ; SAVE ON STACK FOR LEAVE/RET
LDA IFPL
@ -166,6 +169,7 @@ XINTERP PLA
STA IFPL
LDA PPH
STA IFPH
JMP FETCHOP
;*
;* INTERNAL DIVIDE ALGORITHM
@ -1108,7 +1112,11 @@ ICALADR JSR $FFFF
;*
;* ENTER FUNCTION WITH FRAME SIZE AND PARAM COUNT
;*
ENTER INY
ENTER LDA IFPH
PHA ; SAVE ON STACK FOR LEAVE
LDA IFPL
PHA
INY
LDA (IP),Y
PHA ; SAVE ON STACK FOR LEAVE
EOR #$FF
@ -1138,7 +1146,8 @@ ENTER INY
;*
;* LEAVE FUNCTION
;*
LEAVE PLA
LEAVE +INC_IP
LDA (IP),Y
CLC
ADC IFPL
STA PPL
@ -1149,17 +1158,7 @@ LEAVE PLA
STA IFPL
PLA
STA IFPH
RTS
;
RET LDA IFPL ; DEALLOCATE POOL
STA PPL
LDA IFPH
STA PPH
PLA ; RESTORE PREVIOUS FRAME
STA IFPL
PLA
STA IFPH
RTS
RET RTS
SOSCMD = *
!SOURCE "vmsrc/soscmd.a"
SEGEND = *

20
src/vmsrc/plvm802.s
View File

@ -265,9 +265,6 @@ DINTRP PHP
PLA
INC
STA IP
PEI (IFP) ; SAVE ON STACK FOR LEAVE/RET
LDA PP ; SET FP TO PP
STA IFP
STX ESP
TSX
STX HWSP
@ -295,10 +292,7 @@ IINTRP PHP
LDA (TOS,S),Y
DEY
STA IP
LDA IFP
STA TOS,S ; SAVE ON STACK FOR LEAVE/RET
LDA PP ; SET FP TO PP
STA IFP
PLA
STX ESP
TSX
STX HWSP
@ -325,10 +319,7 @@ IINTRPX PHP
LDA (TOS,S),Y
DEY
STA IP
LDA IFP
STA TOS,S ; SAVE ON STACK FOR LEAVE/RET
LDA PP ; SET FP TO PP
STA IFP
PLA
STX ESP
TSX
STX HWSP
@ -1542,7 +1533,8 @@ JMPTMP JMP (TMP)
;*
;* ENTER FUNCTION WITH FRAME SIZE AND PARAM COUNT
;*
ENTER INY
ENTER PEI (IFP) ; SAVE ON STACK FOR LEAVE
INY
LDA (IP),Y
AND #$00FF
!IF DEBUG {
@ -1684,10 +1676,6 @@ RET +ACCMEM8 ; 8 BIT A/M
}
TYX
+ACCMEM16
LDA IFP ; DEALLOCATE POOL
STA PP
PLA ; RESTORE PREVIOUS FRAME
STA IFP
SEC ; SWITCH TO EMULATED MODE
XCE
!AS