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forthMSP430FR_EXTD_ASM.asm
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forthMSP430FR_EXTD_ASM.asm
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; -*- coding: utf-8 -*-
;
; ----------------------------------------------------------------------
;forthMSP430FR_EXTD_ASM.asm
; ----------------------------------------------------------------------
; ----------------------------------------------------------------------
; MOV(.B) SR,dst is coded as follow : MOV(.B) R2,dst ; 1 cycle, one word AS=00 (register mode)
; MOV(.B) #0,dst is coded as follow : MOV(.B) R3,dst ; 1 cycle, one word AS=00 (register mode)
; MOV(.B) #1,dst is coded as follow : MOV(.B) (R3),dst ; 1 cycle, one word AS=01 ( x(reg) mode)
; MOV(.B) #4,dst is coded as follow : MOV(.B) @R2,dst ; 1 cycle, one word AS=10 ( @reg mode)
; MOV(.B) #2,dst is coded as follow : MOV(.B) @R3,dst ; 1 cycle, one word AS=10 ( @reg mode)
; MOV(.B) #8,dst is coded as follow : MOV(.B) @R2+,dst ; 1 cycle, one word AS=11 ( @reg+ mode)
; MOV(.B) #-1,dst is coded as follow : MOV(.B) @R3+,dst ; 1 cycle, one word AS=11 ( @reg+ mode)
; ----------------------------------------------------------------------
; MOV(.B) &EDE,dst is coded as follow : MOV(.B) EDE(R2),dst ; 3 cycles, two words AS=01 ( x(reg) mode)
; MOV(.B) #xxxx,dst is coded as follow: MOV(.B) @PC+,dst ; 2 cycles, two words AS=11 ( @reg+ mode)
; ----------------------------------------------------------------------
; PUSHM order : PSP,TOS, IP, S, T, W, X, Y, rDOVAR,rDOCON,rDODOES, rDOCOL, R3, SR,RSP, PC
; PUSHM order : R15,R14,R13,R12,R11,R10, R9, R8, R7 , R6 , R5 , R4 , R3, R2, R1, R0
; example : PUSHM #6,IP pushes IP,S,T,W,X,Y registers to return stack
;
; POPM order : PC,RSP, SR, R3, rDOCOL,rDODOES,rDOCON,rDOVAR, Y, X, W, T, S, IP,TOS,PSP
; POPM order : R0, R1, R2, R3, R4 , R5 , R6 , R7 , R8, R9,R10,R11,R12,R13,R14,R15
; example : POPM #6,IP pop Y,X,W,T,S,IP registers from return stack
; ----------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER : search argument "xxxx"
; ----------------------------------------------------------------------
; common code for maxi 3 successive SearchARG: SearchARG, SearchARG+Offset, SearchARG-offset
; leave PFA of VARIABLE, [PFA] of CONSTANT, User_Parameter_Field_Address of MARKER_DOES, CFA for all others.
; if the ARGument is not found after those three SearchARg, the 'not found' error is issued by SrchOfst.
SearchARGn PUSH &TOIN ; push TOIN for iterative SearchARGn if any
mASM2FORTH ; -- sep sep = ','|'('|' '
.word WORDD,FIND ; -- addr search definition
.word QFBRAN,SRCHARGNUM ; -- addr if not found
mNEXTADR ; -- CFA of this definition
MOV @TOS+,S ; -- PFA S=DOxxx
QDOVAR SUB #1287h,S ; if CFA is DOVAR ?
ISDOVAR JZ ARGFOUND ; -- addr yes, PFA = adr of VARIABLE
QDOCON ADD #1,S ; is CFA is DOCON ?
JNZ QMARKER ; no
ISDOCON MOV @TOS,TOS ; -- cte yes, TOS = constant
JMP ARGFOUND ; -- cte
QMARKER CMP #MARKER_DOES,0(TOS) ; -- PFA search if PFA = [MARKER_DOES]
JNZ ISOTHER ; -- PFA
.IFDEF VOCABULARY_SET ; -- PFA
ISMARKER ADD #30,TOS ; -- UPFA+2 skip room for DP, CURRENT, CONTEXT(8), null_word, LASTVOC, RET_ADR 2+(2+2+16+2+2+2) bytes +2 !
.ELSE ;
ISMARKER ADD #8,TOS ; -- UPFA+2 skip room for DP, RET_ADR 2+(2+2) bytes +2 !
.ENDIF ;
ISOTHER SUB #2,TOS ; -- CFA|UPFA UPFA = MARKER_DOES User_Parameter_Field_Address
ARGFOUND ADD #2,RSP ; remove TOIN
MOV @RSP+,PC ;24 SR(Z)=0 if ARG found
SRCHARGNUM .word QNUMBER ;
.word QFBRAN,ARGNOTFOUND; -- addr
.word ARGFOUND ; -- value
ARGNOTFOUND mNEXTADR ; -- addr
MOV @RSP+,&TOIN ; restore TOIN
MOV @RSP+,PC ;32 SR(Z)=1 if ARG not found
; ----------------------------------;
; ----------------------------------;
SearchIndex
; Search index of "xxxx(REG)," ; <== CompIdxSrchRn <== PARAM1IDX
; Search index of ",xxxx(REG)" ; <== CompIdxSrchRn <== PARAM2IDX
; Search index of "xxxx(REG)," ; <== CALLA, MOVA
; Search index of ",xxxx(REG)" ; <== MOVA
SUB #1,&TOIN ; move >IN back one (unskip first_char)
MOV #'(',TOS ; addr -- "(" as WORD separator to find xxxx of "xxxx(REG),"
SearchARG ; sep -- n|d or abort" not found"
; Search ARG of "#xxxx," ; <== PARAM1SHARP sep = ','
; Search ARG of "&xxxx," ; <== PARAMXAMP sep = ','
; Search ARG of ",&xxxx" ; <== PARAMXAMP <== PARAM2AMP sep = ' '
MOV TOS,W ;
PUSHM #4,IP ; -- sep PUSHM IP,S,T,W as IP_RET,OPCODE,OPCODEADR,sep
CALL #SearchARGn ; first search argument without offset
JNZ SrchEnd ; -- ARG if ARG found
SearchArgPl MOV #'+',TOS ; -- '+'
CALL #SearchARGn ; 2th search argument with '+' as separator
JNZ ArgPlusOfst ; -- ARG if ARG of ARG+offset found
SearchArgMi MOV #'-',TOS ; -- '-'
CALL #SearchARGn ; 3th search argument with '-' as separator
SUB #1,&TOIN ; to handle offset with its minus sign
ArgPlusOfst PUSH TOS ; -- ARG R-- IP_RET,OPCODE,OPCODEADR,sep,ARG
MOV 2(RSP),TOS ; -- sep reload offset sep
SrchOfst mASM2FORTH ;
.word WORDD,QNUMBER ; -- Ofst|c-addr flag
.word QFBRAN,FNOTFOUND ; -- c-addr no return, see INTERPRET
mNEXTADR ; -- Ofst
ADD @RSP+,TOS ; -- Arg+Ofst
SrchEnd POPM #4,IP ; POPM W,T,S,IP common return for SearchARG and SearchRn
MOV @RSP+,PC ;66
; Arg_Double_to_single conversion needed only for OPCODE type V|VI, 2th pass.
ARGD2S BIT #UF9,SR ; -- Lo Hi
JZ ARGD2SEND
MOV @PSP+,TOS ; -- Lo skip hi
ARGD2SEND MOV @RSP+,PC ;
; ----------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER : search REG
; ----------------------------------------------------------------------
; compute index of "xxxx(REG)," ; <== PARAM1IDX, sep=','
; compute index of ",xxxx(REG)" ; <== PARAM2IDX, sep=' '
CompIdxSrchRn ; addr -- Rn|addr
CALL #SearchIndex ; -- xxxx aborted if not found
CALL #ARGD2S ; skip arg_hi if DOUBLE
MOV &DP,X
MOV TOS,0(X) ; -- xxxx compile ARG xxxx
ADD #2,&DP
MOV #')',TOS ; -- ")" prepare separator to search REG of "xxxx(REG)"
; search REG of "xxxx(REG),"
; search REG of ",xxxx(REG)"
; search REG of "@REG," sep = ',' ; <== PARAM1AT
SkipRSrchRn ADD #1,&TOIN ; skip 'R' in input buffer
; search REG of "@REG+," sep = '+' ; <== PARAM1ATPL
; search REG of "REG," sep = ',' ; <== PARAM1REG
; search REG of ",REG" sep = ' ' ; <== PARAM2REG
SearchRn MOV &TOIN,W ;
PUSHM #4,IP ; PUSHM IP,S,T,W as IP_RET,OPCODE,OPCODEADR,TOIN
mASM2FORTH ; search xx of Rxx
.word WORDD,QNUMBER ;
.word QFBRAN,REGNOTFOUND; -- xxxx SR(Z)=1 if Not a Number
mNEXTADR ; -- Rn number is found
CMP #16,TOS ; -- Rn
JNC SrchEnd ; -- Rn SR(Z)=0, Rn found,
JC REGNUM_ERR ; abort if Rn out of bounds
REGNOTFOUND mNEXTADR ; -- addr SR(Z)=1, (used in case of @REG not found),
MOV @RSP,&TOIN ; -- addr restore TOIN, ready for next SearchRn
JMP SrchEnd ; -- addr SR(Z)=1 ==> not a register
; ----------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER : INTERPRET FIRST OPERAND
; ----------------------------------------------------------------------
; PARAM1 separator -- ; parse input buffer until separator and compute first operand of opcode
; sep is "," for src TYPE II and " " for dst (TYPE II).
PARAM1 JNZ QPARAM1SHARP ; -- sep if prefix <> 'R'
PARAM1REG CALL #SearchRn ; case of "REG,"
JNZ SWAPREG ; -- 000R REG of "REG," found, S=OPCODE=0
; ----------------------------------;
QPARAM1SHARP CMP.B #'#',W ; -- sep W=first char
JNE QPARAM1AMP
PARAM1SHARP CALL #SearchARG ; -- xxxx abort if not found
CALL #ARGD2S ; skip arg_hi of OPCODE type V
MOV #0300h,S ; OPCODE = 0300h : MOV #0,dst is coded MOV R3,dst
CMP #0,TOS ; -- xxxx #0 ?
JZ PARAMENDOF
MOV #0310h,S ; OPCODE = 0310h : MOV #1,dst is coded MOV 0(R3),dst
CMP #1,TOS ; -- xxxx #1 ?
JZ PARAMENDOF
MOV #0320h,S ; OPCODE = 0320h : MOV #2,dst is coded MOV @R3,dst
CMP #2,TOS ; -- xxxx #2 ?
JZ PARAMENDOF
MOV #0330h,S ; OPCODE = 0330h : MOV #-1,dst is coded MOV @R3+,dst
CMP #-1,TOS ; -- xxxx #-1 ?
JZ PARAMENDOF
MOV #0220h,S ; OPCODE = 0220h : MOV #4,dst is coded MOV @R2,dst
CMP #4,TOS ; -- xxxx #4 ?
JZ PARAMENDOF
MOV #0230h,S ; OPCODE = 0230h : MOV #8,dst is coded MOV @R2+,dst
CMP #8,TOS ; -- xxxx #8 ?
JZ PARAMENDOF
SHARPOTHERS MOV #0030h,S ; -- xxxx for all other cases : MOV @PC+,dst
; endcase of "&xxxx," ; <== PARAM1AMP
; endcase of ",&xxxx" ; <== PARAMXAMP <== PARAM2AMP
StoreArg MOV &DP,X ;
ADD #2,&DP ; cell allot for arg
MOV TOS,0(X) ; compile arg
JMP PARAMENDOF
; ----------------------------------;
QPARAM1AMP CMP.B #'&',W ; -- sep
JNE QPARAM1AT
; case of "&xxxx," ; search for "&xxxx,"
PARAM1AMP MOV #0210h,S ; set code type : xxxx(R2) with AS=0b01 ==> x210h
; case of "&xxxx,"|",&xxxx" ; <== PARAM2AMP
PARAMXAMP CALL #SearchARG ;
CALL #ARGD2S ; skip arg_hi of OPCODE type V
JMP StoreArg ; -- then ret
; ----------------------------------;
QPARAM1AT CMP.B #'@',W ; -- sep
JNE PARAM1IDX
; case of "@REG,"|"@REG+,"
PARAM1AT MOV #0020h,S ; -- sep init OPCODE with indirect code type : AS=0b10
CALL #SkipRSrchRn ; Z = not found
JNZ SWAPREG ; -- Rn REG of "@REG," found
; case of "@REG+," ; -- addr search REG of "@REG+"
PARAM1ATPL MOV #'+',TOS ; -- sep
CALL #SearchRn ;
JNZ PARAM1ATPLX ; -- Rn REG found
; ----------------------------------; REG not found
; case of "xxxx(REG)," ; -- sep OPCODE I
; case of "xxxx(REG)" ; -- sep OPCODE II
PARAM1IDX CALL #CompIdxSrchRn ; -- 000R compile index xxxx and search REG of "(REG)", abort if xxxx not found
; case of "@REG+,"|"xxxx(REG)," ; <== PARAM1ATPL OPCODE I
; case of "@REG+"|"xxxx(REG)" ; <== PARAM1ATPL OPCODE II
PARAM1ATPLX BIS #0010h,S ; AS=0b01 for indexing address, AS=0b11 for @REG+
MOV #3FFFh,W ;2 4000h = first OPCODE type I
CMP S,W ;1 with OPCODE II @REG or xxxx(REG) don't skip CR !
ADDC #0,&TOIN ;1 with OPCODE I, @REG+, or xxxx(REG), skip "," ready for the second operand search
; endcase of "@REG," ; -- 000R <== PARAM1AT
; endcase of "REG," ; -- 000R <== PARAM1REG
SWAPREG SWPB TOS ; -- 0R00 swap bytes because it's not a dst REG typeI (not a 2 ops inst.)
; endcase of ",REG" ; -- 0R0D <== PARAM2REG (dst REG typeI)
; endcase of ",xxxx(REG)" ; -- 0R0D <== PARAM2IDX (dst REG typeI)
OPCODEPLREG ADD TOS,S ; -- 0R00|0R0D
; endcase of all ; <== PARAM1SHARP PARAM1AMP PARAM2AMP
PARAMENDOF MOV @PSP+,TOS ; --
MOV @IP+,PC ; -- S=OPCODE,T=OPCODEADR
; ----------------------------------;
; ----------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER : INTERPRET 2th OPERAND
; ----------------------------------------------------------------------
PARAM2 JNZ QPARAM2AMP ; -- sep if prefix <> 'R'
PARAM2REG CALL #SearchRn ; -- sep case of ",REG"
JNZ OPCODEPLREG ; -- 000D REG of ",REG" found
; ----------------------------------;
QPARAM2AMP CMP.B #'&',W ;
JNZ PARAM2IDX ; '&' not found
; case of ",&xxxx" ;
PARAM2AMP BIS #0082h,S ; change OPCODE : AD=1, dst = R2
JMP PARAMXAMP ; -- ' '
; ----------------------------------;
; case of ",xxxx(REG) ; -- sep
PARAM2IDX BIS #0080h,S ; set AD=1
CALL #CompIdxSrchRn ; compile index xxxx and search REG of ",xxxx(REG)", abort if xxxx not found
JNZ OPCODEPLREG ; -- 000D if REG found
MOV #NOTFOUND,PC ; does ABORT" ?"
; ----------------------------------;
; ----------------------------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER: reset OPCODE in S reg, set OPCODE addr in T reg,
; move Prefix in W reg, skip prefix in input buffer. Flag SR(Z)=1 if prefix = 'R'.
; ----------------------------------------------------------------------------------------
InitAndSkipPrfx
MOV #0,S ; reset OPCODE
MOV &DP,T ; HERE --> OPCODEADR
ADD #2,&DP ; cell allot for opcode
; SkipPrfx ; -- skip all occurring char 'BL', plus one prefix
SkipPrfx MOV #20h,W ; -- W=BL
MOV &TOIN,X ; --
ADD &SOURCE_ORG,X ;
SKIPLOOP CMP.B @X+,W ; -- W=BL does character match?
JZ SKIPLOOP ; --
MOV.B -1(X),W ; W=prefix
SUB &SOURCE_ORG,X ; --
MOV X,&TOIN ; -- >IN points after prefix
CMP.B #'R',W ; preset SR(Z)=1 if prefix = 'R'
MOV @IP+,PC ; 4
; ----------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER: OPCODE TYPE 0 : zero operand :-)
; ----------------------------------------------------------------------
asmword "RETI"
mDOCOL
.word lit,1300h,COMMA,EXIT
; ----------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER: OPCODES TYPE I : double operand
; ----------------------------------------------------------------------
; OPCODE(FEDC)
; OPCODE(code) = 0bxxxx opcode
; OPCODE(BA98)
; = 0bxxxx src_register,
; OPCODE(7) AD (dst addr type)
; = 0b0 ,register
; = 0b1 ,x(Rn),&adr
; OPCODE(6) size
; OPCODE(B) = 0b0 word
; = 0b1 byte
; OPCODE(54) AS (src addr type)
; OPCODE(AS) = 0b00 register,
; = 0b01 x(Rn),&adr,
; = 0b10 @Rn,
; = 0b11 @Rn+,
; OPCODE(3210)
; OPCODE(dst) = 0bxxxx ,dst_register
; ----------------------------------------------------------------------
; TYPE1DOES -- BODYDOES search and compute PARAM1 & PARAM2 as src and dst operands then compile instruction
TYPE1DOES .word lit,','
.word InitAndSkipPrfx ; init S=0, T=DP, DP=DP+2 then skip prefix, SR(Z)=1 if prefix = 'R'
.word PARAM1 ; -- BODYDOES S=OPCODE,T=OPCODEADR
.word BL,SkipPrfx ; SR(Z)=1 if prefix = 'R'
.word PARAM2 ; -- BODYDOES S=OPCODE,T=OPCODEADR
mNEXTADR ;
MAKEOPCODE MOV @RSP+,IP
BIS @TOS,S ; -- opcode generic opcode + customized S
MOV S,0(T) ; -- opcode store complete opcode
JMP PARAMENDOF ; -- then EXIT
asmword "MOV"
CALL rDODOES
.word TYPE1DOES,4000h
asmword "MOV.B"
CALL rDODOES
.word TYPE1DOES,4040h
asmword "ADD"
CALL rDODOES
.word TYPE1DOES,5000h
asmword "ADD.B"
CALL rDODOES
.word TYPE1DOES,5040h
asmword "ADDC"
CALL rDODOES
.word TYPE1DOES,6000h
asmword "ADDC.B"
CALL rDODOES
.word TYPE1DOES,6040h
asmword "SUBC"
CALL rDODOES
.word TYPE1DOES,7000h
asmword "SUBC.B"
CALL rDODOES
.word TYPE1DOES,7040h
asmword "SUB"
CALL rDODOES
.word TYPE1DOES,8000h
asmword "SUB.B"
CALL rDODOES
.word TYPE1DOES,8040h
asmword "CMP"
CALL rDODOES
.word TYPE1DOES,9000h
asmword "CMP.B"
CALL rDODOES
.word TYPE1DOES,9040h
asmword "DADD"
CALL rDODOES
.word TYPE1DOES,0A000h
asmword "DADD.B"
CALL rDODOES
.word TYPE1DOES,0A040h
asmword "BIT"
CALL rDODOES
.word TYPE1DOES,0B000h
asmword "BIT.B"
CALL rDODOES
.word TYPE1DOES,0B040h
asmword "BIC"
CALL rDODOES
.word TYPE1DOES,0C000h
asmword "BIC.B"
CALL rDODOES
.word TYPE1DOES,0C040h
asmword "BIS"
CALL rDODOES
.word TYPE1DOES,0D000h
asmword "BIS.B"
CALL rDODOES
.word TYPE1DOES,0D040h
asmword "XOR"
CALL rDODOES
.word TYPE1DOES,0E000h
asmword "XOR.B"
CALL rDODOES
.word TYPE1DOES,0E040h
asmword "AND"
CALL rDODOES
.word TYPE1DOES,0F000h
asmword "AND.B"
CALL rDODOES
.word TYPE1DOES,0F040h
; ----------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER, OPCODES TYPE II : single operand
; ----------------------------------------------------------------------
; OPCODE(FEDCBA987)
; OPCODE(code) = 0bxxxxxxxxx
; OPCODE(6) size
; OPCODE(B) = 0b0 word
; = 0b1 byte
; OPCODE(54) (dst addr type)
; OPCODE(AS) = 0b00 register
; = 0b01 x(Rn),&adr
; = 0b10 @Rn
; = 0b11 @Rn+
; OPCODE(3210)
; OPCODE(dst) = 0bxxxx dst register
; ----------------------------------------------------------------------
TYPE2DOES ; -- BODYDOES
.word BL ; -- BODYDOES ' '
.word InitAndSkipPrfx ;
.word PARAM1 ; -- BODYDOES S=OPCODE,T=OPCODEADR
mNEXTADR ;
MOV S,W ;
AND #0070h,S ; keep B/W & AS infos in OPCODE
SWPB W ; (REG org --> REG dst)
AND #000Fh,W ; keep REG
BIS_ASMTYPE BIS W,S ; -- BODYDOES add it in OPCODE
JMP MAKEOPCODE ; -- then end
asmword "RRC" ; Rotate Right through Carry ( word)
CALL rDODOES
.word TYPE2DOES,1000h
asmword "RRC.B" ; Rotate Right through Carry ( byte)
CALL rDODOES
.word TYPE2DOES,1040h
asmword "SWPB" ; Swap bytes
CALL rDODOES
.word TYPE2DOES,1080h
asmword "RRA"
CALL rDODOES
.word TYPE2DOES,1100h
asmword "RRA.B"
CALL rDODOES
.word TYPE2DOES,1140h
asmword "SXT"
CALL rDODOES
.word TYPE2DOES,1180h
asmword "PUSH"
CALL rDODOES
.word TYPE2DOES,1200h
asmword "PUSH.B"
CALL rDODOES
.word TYPE2DOES,1240h
asmword "CALL"
CALL rDODOES
.word TYPE2DOES,1280h
; ----------------------------------------------------------------------
; errors output
; ----------------------------------------------------------------------
MUL_REG_ERR ADD #1,W ; <== PUSHM|POPM|RRAM|RRUM|RRCM|RLAM error
BRANCH_ERR MOV W,TOS ; <== ASM_branch error
REGNUM_ERR ; <== REG number error
mASM2FORTH ; -- n n = value out of bounds
.word DOT,XSQUOTE
.byte 13,"out of bounds"
.word QABORT_YES
; ----------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER, CONDITIONAL BRANCHS
; ----------------------------------------------------------------------
; ASSEMBLER FORTH OPCODE(FEDC)
; OPCODE(code) for TYPE JNE,JNZ 0<>, <> = 0x20xx + (offset AND 3FF) ; branch if Z = 0
; OPCODE(code) for TYPE JEQ,JZ 0=, = = 0x24xx + (offset AND 3FF) ; branch if Z = 1
; OPCODE(code) for TYPE JNC,JLO U< = 0x28xx + (offset AND 3FF) ; branch if C = 0
; OPCODE(code) for TYPE JC,JHS U>= = 0x2Cxx + (offset AND 3FF) ; branch if C = 1
; OPCODE(code) for TYPE JN 0< = 0x30xx + (offset AND 3FF) ; branch if N = 1
; OPCODE(code) for TYPE JGE >= = 0x34xx + (offset AND 3FF) ; branch if (N xor V) = 0
; OPCODE(code) for TYPE JL < = 0x38xx + (offset AND 3FF) ; branch if (N xor V) = 1
; OPCODE(code) for TYPE JMP = 0x3Cxx + (offset AND 3FF)
asmword "S>=" ; if >= assertion (opposite of jump if < )
CALL rDOCON
.word 3800h
asmword "S<" ; if < assertion
CALL rDOCON
.word 3400h
asmword "0>=" ; if 0>= assertion ; use only with IF UNTIL WHILE !
CALL rDOCON
.word 3000h
asmword "0<" ; jump if 0< ; use only with ?GOTO !
CALL rDOCON
.word 3000h
asmword "U<" ; if U< assertion
CALL rDOCON
.word 2C00h
asmword "U>=" ; if U>= assertion
CALL rDOCON
.word 2800h
asmword "0<>" ; if <>0 assertion
CALL rDOCON
.word 2400h
asmword "0=" ; if =0 assertion
CALL rDOCON
.word 2000h
;ASM IF OPCODE -- @OPCODE1
asmword "IF"
ASM_IF MOV &DP,W
MOV TOS,0(W) ; compile incomplete opcode
ADD #2,&DP
MOV W,TOS
MOV @IP+,PC
;ASM THEN @OPCODE -- resolve forward branch
asmword "THEN"
ASM_THEN MOV &DP,W ; -- @OPCODE W=dst
MOV TOS,Y ; Y=@OPCODE
ASM_THEN1 MOV @PSP+,TOS ; --
MOV Y,X ;
ADD #2,X ; -- Y=@OPCODE W=dst X=src+2
SUB X,W ; -- Y=@OPCODE W=dst-src+2=displacement (bytes)
CMP #1023,W
JC BRANCH_ERR ; (JHS) unsigned branch if displ. > 1022 bytes
RRA W ; -- Y=@OPCODE W=displacement (words)
BIS W,0(Y) ; -- [@OPCODE]=OPCODE completed
MOV @IP+,PC
; ELSE @OPCODE1 -- @OPCODE2 branch for IF..ELSE
asmword "ELSE"
ASM_ELSE MOV &DP,W ; -- W=HERE
MOV #3C00h,0(W) ; compile unconditionnal branch
ADD #2,&DP ; -- DP+2
SUB #2,PSP
MOV W,0(PSP) ; -- @OPCODE2 @OPCODE1
JMP ASM_THEN ; -- @OPCODE2
; BEGIN -- BEGINadr initialize backward branch
asmword "BEGIN"
HERE SUB #2,PSP
MOV TOS,0(PSP)
MOV &DP,TOS
MOV @IP+,PC
; UNTIL @BEGIN OPCODE -- resolve conditional backward branch
asmword "UNTIL"
ASM_UNTIL MOV @PSP+,W ; -- OPCODE W=@BEGIN
ASM_UNTIL1 MOV TOS,Y ; Y=OPCODE W=@BEGIN
ASM_UNTIL2 MOV @PSP+,TOS ; --
MOV &DP,X ; -- Y=OPCODE X=HERE W=dst
SUB #2,W ; -- Y=OPCODE X=HERE W=dst-2
SUB X,W ; -- Y=OPCODE X=src W=src-dst-2=displacement (bytes)
CMP #-1024,W ;
JL BRANCH_ERR ; signed branch if displ. < -1024 bytes
RRA W ; -- Y=OPCODE X=HERE W=displacement (words)
AND #3FFh,W ; -- Y=OPCODE X=HERE W=troncated negative displacement (words)
BIS W,Y ; -- Y=OPCODE (completed)
MOV Y,0(X)
ADD #2,&DP
MOV @IP+,PC
; AGAIN @BEGIN -- uncond'l backward branch
; unconditional backward branch
asmword "AGAIN"
ASM_AGAIN MOV TOS,W ; W=@BEGIN
MOV #3C00h,Y ; Y = asmcode JMP
JMP ASM_UNTIL2 ;
; WHILE @BEGIN OPCODE -- @WHILE @BEGIN
asmword "WHILE"
ASM_WHILE mDOCOL ; -- @BEGIN OPCODE
.word ASM_IF,SWAP,EXIT
; REPEAT @WHILE @BEGIN -- resolve WHILE loop
asmword "REPEAT"
ASM_REPEAT mDOCOL ; -- @WHILE @BEGIN
.word ASM_AGAIN,ASM_THEN,EXIT
; ------------------------------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER : branch up to 3 backward labels and up to 3 forward labels
; ------------------------------------------------------------------------------------------
; used for non canonical branchs, as BASIC language: "goto line x"
; labels BWx and FWx must be set at the beginning of line (>IN < 8).
; FWx can resolve only one previous GOTO|?GOTO FWx.
; BWx can resolve any subsequent GOTO|?GOTO BWx.
BACKWDOES mNEXTADR
MOV @RSP+,IP ;
MOV @TOS,TOS
MOV TOS,Y ; -- BODY Y = BWx addr
MOV @PSP+,TOS ; --
MOV @Y,W ; W = LABEL
CMP #8,&TOIN ; are we colon 8 or more ?
BACKWUSE JC ASM_UNTIL1 ; yes, use this label
BACKWSET MOV &DP,0(Y) ; no, set LABEL = DP
MOV @IP+,PC
; backward label 1
asmword "BW1"
CALL rDODOES ; CFA
.word BACKWDOES ; PFA
.word ASMBW1 ; in RAM
; backward label 2
asmword "BW2"
CALL rDODOES
.word BACKWDOES
.word ASMBW2 ; in RAM
; backward label 3
asmword "BW3"
CALL rDODOES
.word BACKWDOES
.word ASMBW3 ; in RAM
FORWDOES mNEXTADR
MOV @RSP+,IP
MOV &DP,W ;
MOV @TOS,TOS
MOV @TOS,Y ; -- BODY Y=@OPCODE of FWx
MOV #0,0(TOS) ; V3.9: clear @OPCODE of FWx to avoid jmp resolution without label
CMP #8,&TOIN ; are we colon 8 or more ?
FORWUSE JNC ASM_THEN1 ; no: resolve FWx with W=DP, Y=@OPCODE
FORWSET MOV @PSP+,0(W) ; yes compile opcode (without displacement)
ADD #2,&DP ; increment DP
MOV W,0(TOS) ; store @OPCODE into BODY of FWx
MOV @PSP+,TOS ; --
MOV @IP+,PC
; forward label 1
asmword "FW1"
CALL rDODOES ; CFA
.word FORWDOES ; PFA
.word ASMFW1 ; in RAM
; forward label 2
asmword "FW2"
CALL rDODOES
.word FORWDOES
.word ASMFW3 ; in RAM
; forward label 3
asmword "FW3"
CALL rDODOES
.word FORWDOES
.word ASMFW3 ; in RAM
;ASM GOTO <label> -- unconditionnal branch to label
asmword "GOTO"
SUB #2,PSP
MOV TOS,0(PSP)
MOV #3C00h,TOS ; -- JMP_OPCODE
GOTONEXT mDOCOL
.word TICK ; -- OPCODE CFA<label>
.word EXECUTE,EXIT
;ASM <cond> ?GOTO <label> OPCODE -- conditionnal branch to label
asmword "?GOTO"
INVJMP CMP #3000h,TOS ; invert code jump process
JZ GOTONEXT ; case of JN, do nothing
XOR #0400h,TOS ; case of: JNZ<-->JZ JNC<-->JC JL<-->JGE
BIT #1000h,TOS ; 3xxxh case ?
JZ GOTONEXT ; no
XOR #0800h,TOS ; complementary action for JL<-->JGE
JMP GOTONEXT
; --------------------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER, OPCODES TYPE III : PUSHM|POPM|RLAM|RRAM|RRUM|RRCM
; --------------------------------------------------------------------------------
; PUSHM, syntax: PUSHM #n,REG with 0 < n < 17
; POPM syntax: POPM #n,REG with 0 < n < 17
; PUSHM order : PSP,TOS, IP, S, T, W, X, Y, rEXIT,rDOVAR,rDOCON, rDODOES, R3, SR,RSP, PC
; PUSHM order : R15,R14,R13,R12,R11,R10, R9, R8, R7 , R6 , R5 , R4 , R3, R2, R1, R0
; example : PUSHM #6,IP pushes IP,S,T,W,X,Y registers to return stack
;
; POPM order : PC,RSP, SR, R3, rDODOES,rDOCON,rDOVAR,rEXIT, Y, X, W, T, S, IP,TOS,PSP
; POPM order : R0, R1, R2, R3, R4 , R5 , R6 , R7 , R8, R9,R10,R11,R12,R13,R14,R15
; example : POPM #6,IP pulls Y,X,W,T,S,IP registers from return stack
; RxxM syntax: RxxM #n,REG with 0 < n < 5
TYPE3DOES ; -- BODYDOES
.word LIT,',' ; -- BODYDOES ','
.word SkipPrfx ;
.word WORDD,QNUMBER ;
.word QFBRAN,FNOTFOUND; see INTERPRET
.word BL ; -- BODYDOES n ' '
.word InitAndSkipPrfx ; -- BODYDOES n ' '
.word PARAM2 ; -- BODYDOES n S=OPCODE = 0x000R
mNEXTADR
MOV TOS,W ; -- BODYDOES n W = n
MOV @PSP+,TOS ; -- BODYDOES
SUB #1,W ; W = n floored to 0
JN MUL_REG_ERR
MOV @TOS,X ; X=OPCODE
RLAM #4,X ; OPCODE bit 1000h --> C
JNC RxxMINSTRU ; if bit 1000h = 0
PxxxINSTRU MOV S,Y ; S=REG, Y=REG to test
RLAM #3,X ; OPCODE bit 0200h --> C
JNC PUSHMINSTRU ; W=n-1 Y=REG
POPMINSTRU SUB W,S ; to make POPM opcode, compute first REG to POP; TI is complicated....
PUSHMINSTRU SUB W,Y ; Y=REG-(n-1)
CMP #16,Y
JC MUL_REG_ERR ; JC=JHS (U>=)
RLAM #4,W ; W = n << 4
JMP BIS_ASMTYPE ; BODYDOES --
RxxMINSTRU CMP #4,W ;
JC MUL_REG_ERR ; JC=JHS (U>=)
SWPB W ; W = n << 8
RLAM #2,W ; W = N << 10
JMP BIS_ASMTYPE ; BODYDOES --
asmword "RRCM"
CALL rDODOES
.word TYPE3DOES,0050h
asmword "RRAM"
CALL rDODOES
.word TYPE3DOES,0150h
asmword "RLAM"
CALL rDODOES
.word TYPE3DOES,0250h
asmword "RRUM"
CALL rDODOES
.word TYPE3DOES,0350h
asmword "PUSHM"
CALL rDODOES
.word TYPE3DOES,1500h
asmword "POPM"
CALL rDODOES
.word TYPE3DOES,1700h
asmword "RRCM.A"
CALL rDODOES
.word TYPE3DOES,0040h
asmword "RRAM.A"
CALL rDODOES
.word TYPE3DOES,0140h
asmword "RLAM.A"
CALL rDODOES
.word TYPE3DOES,0240h
asmword "RRUM.A"
CALL rDODOES
.word TYPE3DOES,0340h
asmword "PUSHM.A"
CALL rDODOES
.word TYPE3DOES,1400h
asmword "POPM.A"
CALL rDODOES
.word TYPE3DOES,1600h
; --------------------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER: OPCODE TYPE III bis: CALLA (without extended word)
; --------------------------------------------------------------------------------
; absolute and immediate instructions must be written as $x.xxxx (DOUBLE numbers with dot)
; indexed instructions must be written as $xxxx(REG)
; --------------------------------------------------------------------------------
asmword "CALLA"
mDOCOL
.word BL ; -- sep
.word InitAndSkipPrfx ; -- sep SR(Z)=1 if prefix = 'R'
mNEXTADR
MOV @RSP+,IP
CALLA0 MOV #134h,S ; 134h<<4 = 1340h = opcode for CALLA Rn
JNZ CALLA1 ; -- sep if prefix <> 'R'
CALLA01 CALL #SearchRn ; -- Rn
CALLA02 RLAM #4,S ; (opcode>>4)<<4 = opcode
BIS TOS,S ; update opcode with Rn|$x
MOV S,0(T) ; store opcode
MOV @PSP+,TOS ; --
MOV @IP+,PC ;
;-----------------------------------;
CALLA1 ADD #2,S ; -- sep 136h<<4 = opcode for CALLA @REG
CMP.B #'@',W ; Search @REG
JNZ CALLA2 ;
CALLA11 CALL #SkipRSrchRn ;
JNZ CALLA02 ; if REG found, update opcode
;-----------------------------------;
ADD #1,S ; 137h<<4 = opcode for CALLA @REG+
MOV #'+',TOS ; -- sep
JMP CALLA01 ;
;-----------------------------------;
CALLA2 ADD #2,&DP ; -- sep make room for xxxx of #$x.xxxx|&$x.xxxx|$xxxx(REG)
CMP.B #'#',W ;
JNZ CALLA3
MOV #13Bh,S ; 13Bh<<4 = opcode for CALLA #$x.xxxx
CALLA21 CALL #SearchARG ; -- Lo Hi
MOV @PSP+,2(T) ; -- Hi store $xxxx of #$x.xxxx|&$x.xxxx
JMP CALLA02 ; update opcode with $x. and store opcode
;-----------------------------------;
CALLA3 CMP.B #'&',W ; -- sep
JNZ CALLA4 ;
ADD #2,S ; 138h<<4 = opcode for CALLA &$x.xxxx
JMP CALLA21
;-----------------------------------;
CALLA4 SUB #1,S ; 135h<<4 = opcode for CALLA $xxxx(REG)
CALLA41 CALL #SearchIndex ; -- n
MOV TOS,2(T) ; -- n store $xxxx of $xxxx(REG)
MOV #')',TOS ; -- sep
JMP CALLA11 ; search Rn and update opcode
; ===============================================================
; to allow data access beyond $FFFF
; ===============================================================
; MOVA #$x.xxxx|&$x.xxxx|$xxxx(Rs)|Rs|@Rs|@Rs+ , &$x.xxxx|$xxxx(Rd)|Rd
; ADDA (#$x.xxxx|Rs , Rd)
; CMPA (#$x.xxxx|Rs , Rd)
; SUBA (#$x.xxxx|Rs , Rd)
; first argument process ACMS1
;-----------------------------------;
ACMS1 MOV @PSP+,S ; -- sep S=BODYDOES
MOV @S,S ; S=opcode
;-----------------------------------;
ACMS10 JNZ ACMS11 ; -- sep if prefix <> 'R'
ACMS101 CALL #SearchRn ; -- Rn
ACMS102 RLAM #4,TOS ; 8<<src
RLAM #4,TOS ;
ACMS103 BIS S,TOS ; update opcode with src|dst
MOV TOS,0(T) ; save opcode
MOV T,TOS ; -- OPCODE_addr
MOV @IP+,PC ;
;-----------------------------------;
ACMS11 CMP.B #'#',W ; -- sep X=addr
JNE MOVA12 ;
BIC #40h,S ; set #opcode
ACMS111 ADD #2,&DP ; make room for low #$xxxx|&$xxxx|$xxxx(REG)
CALL #SearchARG ; -- Lo Hi
MOV @PSP+,2(T) ; -- Hi store $xxxx of #$x.xxxx|&$x.xxxx|$xxxx(REG)
AND #0Fh,TOS ; -- Hi sel Hi src
JMP ACMS102 ;
;-----------------------------------;
MOVA12 CMP.B #'&',W ; -- sep case of MOVA &$x.xxxx
JNZ MOVA13 ;
XOR #00E0h,S ; set MOVA &$x.xxxx, opcode
JMP ACMS111 ;
;-----------------------------------;
MOVA13 BIC #00F0h,S ; set MOVA @REG, opcode
CMP.B #'@',W ; -- sep
JNZ MOVA14 ;
CALL #SkipRSrchRn ; -- Rn
JNZ ACMS102 ; if @REG found
BIS #0010h,S ; set @REG+ opcode
MOV #'+',TOS ; -- '+'
MOVA131 CALL #SearchRn ; -- Rn case of MOVA @REG+,|MOVA $x.xxxx(REG),
MOVA132 ADD #1,&TOIN ; skip "," ready for the second operand search
JMP ACMS102 ;
;-----------------------------------;
MOVA14 BIS #0030h,S ; -- sep set xxxx(REG), opcode
ADD #2,&DP ; make room for first $xxxx of $xxxx(REG),
CALL #SearchIndex ; -- n
MOV TOS,2(T) ; -- n store $xxxx as 2th word
MOV #')',TOS ; -- ')'
CALL #SkipRSrchRn ; -- Rn
JMP MOVA132 ;
; 2th argument process ACMS2
;-----------------------------------; -- OPCODE_addr sep
ACMS2 MOV @PSP+,T ; -- sep T=OPCODE_addr
MOV @T,S ; S=opcode
;-----------------------------------;
ACMS21 JNZ MOVA22 ; -- sep if prefix <> 'R'
ACMS211 CALL #SearchRn ; -- Rn
JMP ACMS103 ;
;-----------------------------------;
MOVA22 BIC #0F0h,S ; -- sep
ADD #2,&DP ; make room for $xxxx
CMP.B #'&',W ;
JNZ MOVA23 ;
BIS #060h,S ; set ,&$x.xxxx opcode
CALL #SearchARG ; -- Lo Hi
MOV @PSP+,2(T) ; -- Hi store $xxxx as 2th word
JMP ACMS103 ; update opcode with dst $x and write opcode
;-----------------------------------;
MOVA23 BIS #070h,S ; set ,xxxx(REG) opcode
CALL #SearchIndex ; -- n
MOV TOS,2(T) ; -- n write $xxxx of ,$xxxx(REG) as 2th word
MOV #')',TOS ; -- ")" as WORD separator to find REG of "xxxx(REG),"
CALL #SkipRSrchRn ; -- Rn
JMP ACMS103
; --------------------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER, OPCODES IV 2 operands: Adda|Cmpa|Mova|Suba (without extended word)
; --------------------------------------------------------------------------------
; absolute and immediate instructions must be written as $x.xxxx (DOUBLE numbers)
; indexed instructions must be written as $.xxxx(REG) (DOUBLE numbers)
; --------------------------------------------------------------------------------
TYPE4DOES .word lit,',' ; -- BODYDOES "," char separator for PARAM1
.word InitAndSkipPRFX ; SR(Z)=1 if prefix = 'R'
.word ACMS1 ; -- OPCODE_addr
.word BL,SkipPRFX ; SR(Z)=1 if prefix = 'R'
.word ACMS2 ; -- OPCODE_addr
.word DROPEXIT
asmword "MOVA"
CALL rDODOES
.word TYPE4DOES,00C0h
asmword "CMPA"
CALL rDODOES
.word TYPE4DOES,00D0h
asmword "ADDA"
CALL rDODOES
.word TYPE4DOES,00E0h
asmword "SUBA"
CALL rDODOES
.word TYPE4DOES,00F0h
; PRMX1 is used for OPCODES type V (double operand) and OPCODES type VI (single operand) extended instructions
PRMX1 MOV #1800h,S ; init S=Extended word
;-----------------------------------;
PRMX10 JNZ PRMX11 ; -- sep if prefix <> 'R'
PRMX101 CALL #SearchRn ; -- Rn Rn of REG; call SearchRn only to update >IN
PRMX102 MOV S,TOS ; -- EW init|update Extended word
PRMX103 MOV @IP+,PC ; -- Ext_Word
;-----------------------------------;
PRMX11 CMP.B #'#',W ; -- sep
JNZ PRMX12
PRMX111 CALL #SearchARG ; -- Lo Hi search $x.xxxx of #x.xxxx,
ADD #2,PSP ; -- Hi pop unused low word
PRMX113 AND #0Fh,TOS ;
PRMX114 RLAM #3,TOS
RLAM #4,TOS ; -- 7<<Hi
PRMX115 BIS TOS,S ; update extended word with srcHi
JMP PRMX102
;-----------------------------------;
PRMX12 CMP.B #'&',W ; -- sep
JZ PRMX111
;-----------------------------------;
PRMX13 CMP.B #'@',W ; -- sep
JNZ PRMX14
PRMX131 CALL #SkipRSrchRn ; -- Rn Rn of @REG,
JNZ PRMX102 ; if Rn found
;-----------------------------------;
MOV #'+',TOS ; -- '+'
PRMX133 CALL #SearchRn ; -- Rn Rn of @REG+,
PRMX134 CMP &SOURCE_LEN,&TOIN ; test case of TYPE VI first parameter without ','
JZ PRMX102 ; don't take the risk of skipping CR !
ADD #1,&TOIN ; skip ',' ready to search 2th operand
JMP PRMX102 ;
;-----------------------------------;
PRMX14 CALL #SearchIndex ; -- n
MOV TOS,0(PSP) ; -- Hi Hi
PRMX141 MOV #')',TOS ; -- Hi ')'
CALL #SkipRSrchRn ; -- Hi Rn
MOV @PSP+,TOS ; -- Hi
AND #0Fh,TOS
BIS TOS,S
JMP PRMX134
;-----------------------------------;
; PRMX2 is used for OPCODES type V (double operand) extended instructions
;-----------------------------------;
PRMX2 MOV @PSP+,S ; -- addr S=Extended_Word
;-----------------------------------;
PRMX20 JZ PRMX102 ; -- sep if prefix <> 'R'
;-----------------------------------;
PRMX21 CMP.B #'&',W ;
JNZ PRMX22 ;
PRMX211 CALL #SearchARG ; -- Lo Hi
PRMX213 ADD #2,PSP ; -- hi pop low word
AND #0Fh,TOS ; -- Hi
JMP PRMX115 ; update Extended word with dst_Hi
;-----------------------------------;
PRMX22 CALL #SearchIndex ; -- n
JMP PRMX213
;-----------------------------------;
; UPDATE_eXtendedWord
;-----------------------------------;
UPDATE_XW ; BODYDOES >IN Extended_Word -- BODYDOES+2
MOV @PSP+,&TOIN ; -- BODYDOES EW restore >IN at the start of instruction string
MOV &DP,T ;
ADD #2,&DP ; make room for extended word
MOV TOS,S ; S = Extended_Word
MOV @PSP+,TOS ;
BIS &RPT_WORD,S ; update Extended_word with RPT_WORD
MOV #0,&RPT_WORD ; clear RPT_WORD
BIS @TOS+,S ; -- BODYDOES+2 update Extended_word with [BODYDOES] = A/L bit
MOV S,0(T) ; store extended word
MOV @IP+,PC ;
;-----------------------------------;
; --------------------------------------------------------------------------------
; DTCforthMSP430FR5xxx ASSEMBLER, OPCODES V extended double operand
; --------------------------------------------------------------------------------
; absolute and immediate instructions must be written as $x.xxxx (DOUBLE numbers)
; indexed instructions must be written as $.xxxx(REG) (DOUBLE numbers)
; --------------------------------------------------------------------------------
; these instructions below are processed in two pass:
; pass 1: extended word process by TYPE5DOES with [BODYDOES] value
; pass 2: instruction process by TYPE1DOES with [BODYDOES+2] value
; all numeric arguments must be written as DOUBLE numbers (including a point) : $x.xxxx
TYPE5DOES ; -- BODYDOES
.word LIT,TOIN,FETCH ; -- BODYDOES >IN
.word lit,','
.word SkipPrfx,PRMX1 ; -- BODYDOES >IN ',' char separator for PRMX1
.word BL,SkipPrfx,PRMX2 ; -- BODYDOES >IN Extended_Word
.word UPDATE_XW ; -- BODYDOES+2 >IN is restored ready for 2th pass
.word BRAN,TYPE1DOES ; -- BODYDOES+2 2th pass: completes instruction with opcode = [BODYDOES+2]
asmword "MOVX"
CALL rDODOES
.word TYPE5DOES ; [PFADOES] = TYPE5DOES
.word 40h ; [BODYDOES] = A/L bit
.word 4000h ; [BODYDOES+2] = OPCODE
asmword "MOVX.A"
CALL rDODOES
.word TYPE5DOES,0,4040h
asmword "MOVX.B"
CALL rDODOES
.word TYPE5DOES,40h,4040h
asmword "ADDX"
CALL rDODOES
.word TYPE5DOES,40h,5000h
asmword "ADDX.A"
CALL rDODOES