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zasm: introduce the concept of instruction ID

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It will make tokenization cleaner and it also makes the instruction
table significantly more compact.
This commit is contained in:
Virgil Dupras 2019-04-30 20:25:38 -04:00
parent 79b5c701f6
commit 98ad223ee1
3 changed files with 302 additions and 166 deletions
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455
apps/zasm/instr.asm
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@ -4,7 +4,60 @@ ARGSPEC_TBL_CNT .equ 31
; Number of rows in the primary instructions table ; Number of rows in the primary instructions table
INSTR_TBL_CNT .equ 135 INSTR_TBL_CNT .equ 135
; size in bytes of each row in the primary instructions table ; size in bytes of each row in the primary instructions table
INSTR_TBL_ROWSIZE .equ 9 INSTR_TBL_ROWSIZE .equ 6
; Instruction IDs They correspond to the index of the table in instrNames
I_ADC .equ 0x00
I_ADD .equ 0x01
I_AND .equ 0x02
I_BIT .equ 0x03
I_CALL .equ 0x04
I_CCF .equ 0x05
I_CP .equ 0x06
I_CPD .equ 0x07
I_CPDR .equ 0x08
I_CPI .equ 0x09
I_CPIR .equ 0x0a
I_CPL .equ 0x0b
I_DAA .equ 0x0c
I_DEC .equ 0x0d
I_DI .equ 0x0e
I_DJNZ .equ 0x0f
I_EI .equ 0x10
I_EX .equ 0x11
I_EXX .equ 0x12
I_HALT .equ 0x13
I_IM .equ 0x14
I_IN .equ 0x15
I_INC .equ 0x16
I_IND .equ 0x17
I_INDR .equ 0x18
I_INI .equ 0x19
I_INIR .equ 0x1a
I_JP .equ 0x1b
I_JR .equ 0x1c
I_LD .equ 0x1d
I_LDD .equ 0x1e
I_LDDR .equ 0x1f
I_LDI .equ 0x20
I_LDIR .equ 0x21
I_NEG .equ 0x22
I_NOP .equ 0x23
I_OR .equ 0x24
I_OTDR .equ 0x25
I_OTIR .equ 0x26
I_OUT .equ 0x27
I_POP .equ 0x28
I_PUSH .equ 0x29
I_RET .equ 0x2a
I_RLA .equ 0x2b
I_RLCA .equ 0x2c
I_RRA .equ 0x2d
I_RRCA .equ 0x2e
I_SBC .equ 0x2f
I_SCF .equ 0x30
I_SUB .equ 0x31
I_XOR .equ 0x32
I_BAD .equ 0xff
; Checks whether A is 'N' or 'M' ; Checks whether A is 'N' or 'M'
checkNOrM: checkNOrM:
@ -24,6 +77,31 @@ checknmxy:
cp 'y' cp 'y'
ret ret
; Reads instruction mnemonic in (HL) and returns the corresponding ID (I_*)
; in A. I_BAD if there's no match.
getInstID:
push bc
push de
ld b, I_XOR+1 ; I_XOR is the last
ld de, instrNames
.loop:
ld a, 4
call JUMP_STRNCMP
ld a, 4
call JUMP_ADDDE
jr z, .match
djnz .loop
; no match
ld a, I_BAD
jr .end
.match:
ld a, I_XOR+1
sub b
.end:
pop de
pop bc
ret
; Parse the decimal char at A and extract it's 0-9 numerical value. Put the ; Parse the decimal char at A and extract it's 0-9 numerical value. Put the
; result in A. ; result in A.
; ;
@ -350,24 +428,23 @@ matchArg:
dec hl dec hl
ret ret
; Compare primary row at (DE) with string at tokInstr. Sets Z flag if there's a ; Compare primary row at (DE) with ID at (tokInstr). Sets Z flag if there's a
; match, reset if not. ; match, reset if not.
matchPrimaryRow: matchPrimaryRow:
push hl push hl
push ix push ix
ld hl, tokInstr
ld a, 4
call JUMP_STRNCMP
jr nz, .end
; name matches, let's see the rest
ld ixh, d ld ixh, d
ld ixl, e ld ixl, e
ld a, (tokInstr)
cp (ix)
jr nz, .end
; name matches, let's see the rest
ld hl, curArg1 ld hl, curArg1
ld a, (ix+4) ld a, (ix+1)
call matchArg call matchArg
jr nz, .end jr nz, .end
ld hl, curArg2 ld hl, curArg2
ld a, (ix+5) ld a, (ix+2)
call matchArg call matchArg
.end: .end:
pop ix pop ix
@ -547,23 +624,23 @@ getUpcode:
ld ixl, e ld ixl, e
; Are we a "special instruction"? ; Are we a "special instruction"?
bit 5, (ix+6) bit 5, (ix+3)
jr z, .normalInstr ; not set: normal instruction jr z, .normalInstr ; not set: normal instruction
; We are a special instruction. Fetch handler (little endian, remember). ; We are a special instruction. Fetch handler (little endian, remember).
ld l, (ix+7) ld l, (ix+4)
ld h, (ix+8) ld h, (ix+5)
call callHL call callHL
; We have our result written in curUpcode and C is set. ; We have our result written in curUpcode and C is set.
jp .end jp .end
.normalInstr: .normalInstr:
; we begin by writing our "base upcode", which can be one or two bytes ; we begin by writing our "base upcode", which can be one or two bytes
ld a, (ix+7) ; first upcode ld a, (ix+4) ; first upcode
ld (curUpcode), a ld (curUpcode), a
ld de, curUpcode ; from this point, DE points to "where we are" ld de, curUpcode ; from this point, DE points to "where we are"
; in terms of upcode writing. ; in terms of upcode writing.
inc de ; make DE point to where we should write next. inc de ; make DE point to where we should write next.
ld a, (ix+8) ; second upcode ld a, (ix+5) ; second upcode
cp 0 ; do we have a second upcode? cp 0 ; do we have a second upcode?
jr z, .onlyOneUpcode jr z, .onlyOneUpcode
; we have two upcodes ; we have two upcodes
@ -571,11 +648,11 @@ getUpcode:
inc de inc de
.onlyOneUpcode: .onlyOneUpcode:
; now, let's see if we're dealing with a group here ; now, let's see if we're dealing with a group here
ld a, (ix+4) ; first argspec ld a, (ix+1) ; first argspec
call isGroupId call isGroupId
jr z, .firstArgIsGroup jr z, .firstArgIsGroup
; First arg not a group. Maybe second is? ; First arg not a group. Maybe second is?
ld a, (ix+5) ; 2nd argspec ld a, (ix+2) ; 2nd argspec
call isGroupId call isGroupId
jr nz, .writeExtraBytes ; not a group? nothing to do. go to jr nz, .writeExtraBytes ; not a group? nothing to do. go to
; next step: write extra bytes ; next step: write extra bytes
@ -592,7 +669,7 @@ getUpcode:
; Now, we have our arg "group value" in A. Were going to need to ; Now, we have our arg "group value" in A. Were going to need to
; displace it left by the number of steps specified in the table. ; displace it left by the number of steps specified in the table.
push af push af
ld a, (ix+6) ; displacement bit ld a, (ix+3) ; displacement bit
and a, 0xf ; we only use the lower nibble. and a, 0xf ; we only use the lower nibble.
ld b, a ld b, a
pop af pop af
@ -602,13 +679,13 @@ getUpcode:
; to OR it with the opcode. ; to OR it with the opcode.
; However, we first have to verify whether this ORing takes place on ; However, we first have to verify whether this ORing takes place on
; the second upcode or the first. ; the second upcode or the first.
bit 6, (ix+6) bit 6, (ix+3)
jr z, .firstUpcode ; not set: first upcode jr z, .firstUpcode ; not set: first upcode
or (ix+8) ; second upcode or (ix+5) ; second upcode
ld (curUpcode+1), a ld (curUpcode+1), a
jr .writeExtraBytes jr .writeExtraBytes
.firstUpcode: .firstUpcode:
or (ix+7) ; first upcode or (ix+4) ; first upcode
ld (curUpcode), a ld (curUpcode), a
jr .writeExtraBytes jr .writeExtraBytes
.writeExtraBytes: .writeExtraBytes:
@ -618,13 +695,13 @@ getUpcode:
; We still have our instruction row in IX and we have DE pointing to ; We still have our instruction row in IX and we have DE pointing to
; where we should write next (which could be the second or the third ; where we should write next (which could be the second or the third
; byte of curUpcode). ; byte of curUpcode).
ld a, (ix+4) ; first argspec ld a, (ix+1) ; first argspec
ld hl, curArg1 ld hl, curArg1
call checkNOrM call checkNOrM
jr z, .withWord jr z, .withWord
call checknmxy call checknmxy
jr z, .withByte jr z, .withByte
ld a, (ix+5) ; second argspec ld a, (ix+2) ; second argspec
ld hl, curArg2 ld hl, curArg2
call checkNOrM call checkNOrM
jr z, .withWord jr z, .withWord
@ -644,7 +721,7 @@ getUpcode:
; HL points to our number ; HL points to our number
; one last thing to check. Is the 7th bit on the displacement value set? ; one last thing to check. Is the 7th bit on the displacement value set?
; if yes, we have to decrease our value by 2. Uses for djnz and jr. ; if yes, we have to decrease our value by 2. Uses for djnz and jr.
bit 7, (ix+6) bit 7, (ix+3)
jr z, .skipDecrease jr z, .skipDecrease
; Yup, it's set. ; Yup, it's set.
dec (hl) dec (hl)
@ -665,8 +742,8 @@ getUpcode:
; At this point, everything that we needed to write in curUpcode is ; At this point, everything that we needed to write in curUpcode is
; written an C is 1 if we have no extra byte, 2 if we have an extra ; written an C is 1 if we have no extra byte, 2 if we have an extra
; byte and 3 if we have an extra word. What we need to do here is check ; byte and 3 if we have an extra word. What we need to do here is check
; if ix+8 is non-zero and increase C if it is. ; if ix+5 is non-zero and increase C if it is.
ld a, (ix+8) ld a, (ix+5)
cp 0 cp 0
jr z, .end ; no second upcode? nothing to do. jr z, .end ; no second upcode? nothing to do.
; We have 2 base upcodes ; We have 2 base upcodes
@ -711,7 +788,7 @@ parseTokens:
push hl push hl
push de push de
ld a, (tokInstr) ld a, (tokInstr)
cp 0 cp I_BAD
jr z, .error ; for now, we treat blank lines as errors jr z, .error ; for now, we treat blank lines as errors
ld hl, tokArg1 ld hl, tokArg1
ld de, curArg1 ld de, curArg1
@ -818,10 +895,64 @@ argGrpCC:
argGrpABCDEHL: argGrpABCDEHL:
.db "BCDEHL_A" ; 0xb .db "BCDEHL_A" ; 0xb
; Each row is 4 bytes wide, fill with zeroes
instrNames:
.db "ADC", 0
.db "ADD", 0
.db "AND", 0
.db "BIT", 0
.db "CALL"
.db "CCF", 0
.db "CP",0,0
.db "CPD", 0
.db "CPDR"
.db "CPI", 0
.db "CPIR"
.db "CPL", 0
.db "DAA", 0
.db "DEC", 0
.db "DI",0,0
.db "DJNZ"
.db "EI",0,0
.db "EX",0,0
.db "EXX", 0
.db "HALT"
.db "IM",0,0
.db "IN",0,0
.db "INC", 0
.db "IND", 0
.db "INDR"
.db "INI", 0
.db "INIR"
.db "JP",0,0
.db "JR",0,0
.db "LD",0,0
.db "LDD", 0
.db "LDDR"
.db "LDI", 0
.db "LDIR"
.db "NEG", 0
.db "NOP", 0
.db "OR",0,0
.db "OTDR"
.db "OTIR"
.db "OUT", 0
.db "POP", 0
.db "PUSH"
.db "RET", 0
.db "RLA", 0
.db "RLCA"
.db "RRA", 0
.db "RRCA"
.db "SBC", 0
.db "SCF", 0
.db "SUB", 0
.db "XOR", 0
; This is a list of all supported instructions. Each row represent a combination ; This is a list of all supported instructions. Each row represent a combination
; of instr/argspecs (which means more than one row per instr). Format: ; of instr/argspecs (which means more than one row per instr). Format:
; ;
; 4 bytes for the name (fill with zero) ; 1 byte for the instruction ID
; 1 byte for arg constant ; 1 byte for arg constant
; 1 byte for 2nd arg constant ; 1 byte for 2nd arg constant
; 1 byte displacement for group arguments + flags ; 1 byte displacement for group arguments + flags
@ -842,141 +973,141 @@ argGrpABCDEHL:
; custom code. ; custom code.
instrTBl: instrTBl:
.db "ADC", 0, 'A', 'l', 0, 0x8e , 0 ; ADC A, (HL) .db I_ADC, 'A', 'l', 0, 0x8e , 0 ; ADC A, (HL)
.db "ADC", 0, 'A', 0xb, 0, 0b10001000 , 0 ; ADC A, r .db I_ADC, 'A', 0xb, 0, 0b10001000 , 0 ; ADC A, r
.db "ADC", 0, 'A', 'n', 0, 0xce , 0 ; ADC A, n .db I_ADC, 'A', 'n', 0, 0xce , 0 ; ADC A, n
.db "ADC", 0,'h',0x3,0x44, 0xed, 0b01001010 ; ADC HL, ss .db I_ADC, 'h', 0x3, 0x44, 0xed, 0b01001010 ; ADC HL, ss
.db "ADD", 0, 'A', 'l', 0, 0x86 , 0 ; ADD A, (HL) .db I_ADD, 'A', 'l', 0, 0x86 , 0 ; ADD A, (HL)
.db "ADD", 0, 'A', 0xb, 0, 0b10000000 , 0 ; ADD A, r .db I_ADD, 'A', 0xb, 0, 0b10000000 , 0 ; ADD A, r
.db "ADD", 0, 'A', 'n', 0, 0xc6 , 0 ; ADD A, n .db I_ADD, 'A', 'n', 0, 0xc6 , 0 ; ADD A, n
.db "ADD", 0, 'h', 0x3, 4, 0b00001001 , 0 ; ADD HL, ss .db I_ADD, 'h', 0x3, 4, 0b00001001 , 0 ; ADD HL, ss
.db "ADD", 0,'X',0x4,0x44, 0xdd, 0b00001001 ; ADD IX, pp .db I_ADD, 'X', 0x4, 0x44, 0xdd, 0b00001001 ; ADD IX, pp
.db "ADD", 0,'Y',0x5,0x44, 0xfd, 0b00001001 ; ADD IY, rr .db I_ADD, 'Y', 0x5, 0x44, 0xfd, 0b00001001 ; ADD IY, rr
.db "ADD", 0, 'A', 'x', 0, 0xdd, 0x86 ; ADD A, (IX+d) .db I_ADD, 'A', 'x', 0, 0xdd, 0x86 ; ADD A, (IX+d)
.db "ADD", 0, 'A', 'y', 0, 0xfd, 0x86 ; ADD A, (IY+d) .db I_ADD, 'A', 'y', 0, 0xfd, 0x86 ; ADD A, (IY+d)
.db "AND", 0, 'l', 0, 0, 0xa6 , 0 ; AND (HL) .db I_AND, 'l', 0, 0, 0xa6 , 0 ; AND (HL)
.db "AND", 0, 0xb, 0, 0, 0b10100000 , 0 ; AND r .db I_AND, 0xb, 0, 0, 0b10100000 , 0 ; AND r
.db "AND", 0, 'n', 0, 0, 0xe6 , 0 ; AND n .db I_AND, 'n', 0, 0, 0xe6 , 0 ; AND n
.db "AND", 0, 'x', 0, 0, 0xdd, 0xa6 ; AND (IX+d) .db I_AND, 'x', 0, 0, 0xdd, 0xa6 ; AND (IX+d)
.db "AND", 0, 'y', 0, 0, 0xfd, 0xa6 ; AND (IY+d) .db I_AND, 'y', 0, 0, 0xfd, 0xa6 ; AND (IY+d)
.db "BIT", 0,'n','l',0x20 \ .dw handleBITHL ; BIT b, (HL) .db I_BIT, 'n', 'l', 0x20 \ .dw handleBITHL ; BIT b, (HL)
.db "BIT", 0,'n','x',0x20 \ .dw handleBITIX ; BIT b, (IX+d) .db I_BIT, 'n', 'x', 0x20 \ .dw handleBITIX ; BIT b, (IX+d)
.db "BIT", 0,'n','y',0x20 \ .dw handleBITIY ; BIT b, (IY+d) .db I_BIT, 'n', 'y', 0x20 \ .dw handleBITIY ; BIT b, (IY+d)
.db "BIT", 0,'n',0xb,0x20 \ .dw handleBITR ; BIT b, r .db I_BIT, 'n', 0xb, 0x20 \ .dw handleBITR ; BIT b, r
.db "CALL", 0xa, 'N', 3, 0b11000100 , 0 ; CALL cc, NN .db I_CALL,0xa, 'N', 3, 0b11000100 , 0 ; CALL cc, NN
.db "CALL", 'N', 0, 0, 0xcd , 0 ; CALL NN .db I_CALL,'N', 0, 0, 0xcd , 0 ; CALL NN
.db "CCF", 0, 0, 0, 0, 0x3f , 0 ; CCF .db I_CCF, 0, 0, 0, 0x3f , 0 ; CCF
.db "CP",0,0, 'l', 0, 0, 0xbe , 0 ; CP (HL) .db I_CP, 'l', 0, 0, 0xbe , 0 ; CP (HL)
.db "CP",0,0, 0xb, 0, 0, 0b10111000 , 0 ; CP r .db I_CP, 0xb, 0, 0, 0b10111000 , 0 ; CP r
.db "CP",0,0, 'n', 0, 0, 0xfe , 0 ; CP n .db I_CP, 'n', 0, 0, 0xfe , 0 ; CP n
.db "CP",0,0, 'x', 0, 0, 0xdd, 0xbe ; CP (IX+d) .db I_CP, 'x', 0, 0, 0xdd, 0xbe ; CP (IX+d)
.db "CP",0,0, 'y', 0, 0, 0xfd, 0xbe ; CP (IY+d) .db I_CP, 'y', 0, 0, 0xfd, 0xbe ; CP (IY+d)
.db "CPD", 0, 0, 0, 0, 0xed, 0xa9 ; CPD .db I_CPD, 0, 0, 0, 0xed, 0xa9 ; CPD
.db "CPDR", 0, 0, 0, 0xed, 0xb9 ; CPDR .db I_CPDR,0, 0, 0, 0xed, 0xb9 ; CPDR
.db "CPI", 0, 0, 0, 0, 0xed, 0xa1 ; CPI .db I_CPI, 0, 0, 0, 0xed, 0xa1 ; CPI
.db "CPIR", 0, 0, 0, 0xed, 0xb1 ; CPIR .db I_CPIR,0, 0, 0, 0xed, 0xb1 ; CPIR
.db "CPL", 0, 0, 0, 0, 0x2f , 0 ; CPL .db I_CPL, 0, 0, 0, 0x2f , 0 ; CPL
.db "DAA", 0, 0, 0, 0, 0x27 , 0 ; DAA .db I_DAA, 0, 0, 0, 0x27 , 0 ; DAA
.db "DEC", 0, 'l', 0, 0, 0x35 , 0 ; DEC (HL) .db I_DEC, 'l', 0, 0, 0x35 , 0 ; DEC (HL)
.db "DEC", 0, 'X', 0, 0, 0xdd , 0x2b ; DEC IX .db I_DEC, 'X', 0, 0, 0xdd, 0x2b ; DEC IX
.db "DEC", 0, 'x', 0, 0, 0xdd , 0x35 ; DEC (IX+d) .db I_DEC, 'x', 0, 0, 0xdd, 0x35 ; DEC (IX+d)
.db "DEC", 0, 'Y', 0, 0, 0xfd , 0x2b ; DEC IY .db I_DEC, 'Y', 0, 0, 0xfd, 0x2b ; DEC IY
.db "DEC", 0, 'y', 0, 0, 0xfd , 0x35 ; DEC (IY+d) .db I_DEC, 'y', 0, 0, 0xfd, 0x35 ; DEC (IY+d)
.db "DEC", 0, 0xb, 0, 3, 0b00000101 , 0 ; DEC r .db I_DEC, 0xb, 0, 3, 0b00000101 , 0 ; DEC r
.db "DEC", 0, 0x3, 0, 4, 0b00001011 , 0 ; DEC ss .db I_DEC, 0x3, 0, 4, 0b00001011 , 0 ; DEC ss
.db "DI",0,0, 0, 0, 0, 0xf3 , 0 ; DI .db I_DI, 0, 0, 0, 0xf3 , 0 ; DI
.db "DJNZ", 'n', 0,0x80, 0x10 , 0 ; DJNZ e .db I_DJNZ,'n', 0, 0x80, 0x10 , 0 ; DJNZ e
.db "EI",0,0, 0, 0, 0, 0xfb , 0 ; EI .db I_EI, 0, 0, 0, 0xfb , 0 ; EI
.db "EX",0,0, 'p', 'h', 0, 0xe3 , 0 ; EX (SP), HL .db I_EX, 'p', 'h', 0, 0xe3 , 0 ; EX (SP), HL
.db "EX",0,0, 'p', 'X', 0, 0xdd, 0xe3 ; EX (SP), IX .db I_EX, 'p', 'X', 0, 0xdd, 0xe3 ; EX (SP), IX
.db "EX",0,0, 'p', 'Y', 0, 0xfd, 0xe3 ; EX (SP), IY .db I_EX, 'p', 'Y', 0, 0xfd, 0xe3 ; EX (SP), IY
.db "EX",0,0, 'a', 'f', 0, 0x08 , 0 ; EX AF, AF' .db I_EX, 'a', 'f', 0, 0x08 , 0 ; EX AF, AF'
.db "EX",0,0, 'd', 'h', 0, 0xeb , 0 ; EX DE, HL .db I_EX, 'd', 'h', 0, 0xeb , 0 ; EX DE, HL
.db "EXX", 0, 0, 0, 0, 0xd9 , 0 ; EXX .db I_EXX, 0, 0, 0, 0xd9 , 0 ; EXX
.db "HALT", 0, 0, 0, 0x76 , 0 ; HALT .db I_HALT,0, 0, 0, 0x76 , 0 ; HALT
.db "IM",0,0,'n', 0,0x20 \ .dw handleIM ; IM {0,1,2} .db I_IM, 'n', 0, 0x20 \ .dw handleIM ; IM {0,1,2}
.db "IN",0,0, 'A', 'm', 0, 0xdb , 0 ; IN A, (n) .db I_IN, 'A', 'm', 0, 0xdb , 0 ; IN A, (n)
.db "IN",0,0,0xb,'k',0x43, 0xed, 0b01000000 ; IN r, (C) .db I_IN, 0xb, 'k', 0x43, 0xed, 0b01000000 ; IN r, (C)
.db "INC", 0, 'l', 0, 0, 0x34 , 0 ; INC (HL) .db I_INC, 'l', 0, 0, 0x34 , 0 ; INC (HL)
.db "INC", 0, 'X', 0, 0, 0xdd , 0x23 ; INC IX .db I_INC, 'X', 0, 0, 0xdd , 0x23 ; INC IX
.db "INC", 0, 'x', 0, 0, 0xdd , 0x34 ; INC (IX+d) .db I_INC, 'x', 0, 0, 0xdd , 0x34 ; INC (IX+d)
.db "INC", 0, 'Y', 0, 0, 0xfd , 0x23 ; INC IY .db I_INC, 'Y', 0, 0, 0xfd , 0x23 ; INC IY
.db "INC", 0, 'y', 0, 0, 0xfd , 0x34 ; INC (IY+d) .db I_INC, 'y', 0, 0, 0xfd , 0x34 ; INC (IY+d)
.db "INC", 0, 0xb, 0, 3, 0b00000100 , 0 ; INC r .db I_INC, 0xb, 0, 3, 0b00000100 , 0 ; INC r
.db "INC", 0, 0x3, 0, 4, 0b00000011 , 0 ; INC ss .db I_INC, 0x3, 0, 4, 0b00000011 , 0 ; INC ss
.db "IND", 0, 0, 0, 0, 0xed, 0xaa ; IND .db I_IND, 0, 0, 0, 0xed, 0xaa ; IND
.db "INDR", 0, 0, 0, 0xed, 0xba ; INDR .db I_INDR,0, 0, 0, 0xed, 0xba ; INDR
.db "INI", 0, 0, 0, 0, 0xed, 0xa2 ; INI .db I_INI, 0, 0, 0, 0xed, 0xa2 ; INI
.db "INIR", 0, 0, 0, 0xed, 0xb2 ; INIR .db I_INIR,0, 0, 0, 0xed, 0xb2 ; INIR
.db "JP",0,0, 'l', 0, 0, 0xe9 , 0 ; JP (HL) .db I_JP, 'l', 0, 0, 0xe9 , 0 ; JP (HL)
.db "JP",0,0, 0xa, 'N', 3, 0b11000010 , 0 ; JP cc, NN .db I_JP, 0xa, 'N', 3, 0b11000010 , 0 ; JP cc, NN
.db "JP",0,0, 'N', 0, 0, 0xc3 , 0 ; JP NN .db I_JP, 'N', 0, 0, 0xc3 , 0 ; JP NN
.db "JP",0,0, 'x', 0,0x20 \ .dw handleJPIX ; JP (IX) .db I_JP, 'x', 0, 0x20 \ .dw handleJPIX ; JP (IX)
.db "JP",0,0, 'y', 0,0x20 \ .dw handleJPIY ; JP (IY) .db I_JP, 'y', 0, 0x20 \ .dw handleJPIY ; JP (IY)
.db "JR",0,0, 'n', 0,0x80, 0x18 , 0 ; JR e .db I_JR, 'n', 0, 0x80, 0x18 , 0 ; JR e
.db "JR",0,0,'C','n',0x80, 0x38 , 0 ; JR C, e .db I_JR, 'C', 'n', 0x80, 0x38 , 0 ; JR C, e
.db "JR",0,0,'=','n',0x80, 0x30 , 0 ; JR NC, e .db I_JR, '=', 'n', 0x80, 0x30 , 0 ; JR NC, e
.db "JR",0,0,'Z','n',0x80, 0x28 , 0 ; JR Z, e .db I_JR, 'Z', 'n', 0x80, 0x28 , 0 ; JR Z, e
.db "JR",0,0,'z','n',0x80, 0x20 , 0 ; JR NZ, e .db I_JR, 'z', 'n', 0x80, 0x20 , 0 ; JR NZ, e
.db "LD",0,0, 'c', 'A', 0, 0x02 , 0 ; LD (BC), A .db I_LD, 'c', 'A', 0, 0x02 , 0 ; LD (BC), A
.db "LD",0,0, 'e', 'A', 0, 0x12 , 0 ; LD (DE), A .db I_LD, 'e', 'A', 0, 0x12 , 0 ; LD (DE), A
.db "LD",0,0, 'A', 'c', 0, 0x0a , 0 ; LD A, (BC) .db I_LD, 'A', 'c', 0, 0x0a , 0 ; LD A, (BC)
.db "LD",0,0, 'A', 'e', 0, 0x1a , 0 ; LD A, (DE) .db I_LD, 'A', 'e', 0, 0x1a , 0 ; LD A, (DE)
.db "LD",0,0, 's', 'h', 0, 0xf9 , 0 ; LD SP, HL .db I_LD, 's', 'h', 0, 0xf9 , 0 ; LD SP, HL
.db "LD",0,0, 'A', 'I', 0, 0xed, 0x57 ; LD A, I .db I_LD, 'A', 'I', 0, 0xed, 0x57 ; LD A, I
.db "LD",0,0, 'I', 'A', 0, 0xed, 0x47 ; LD I, A .db I_LD, 'I', 'A', 0, 0xed, 0x47 ; LD I, A
.db "LD",0,0, 'A', 'R', 0, 0xed, 0x5f ; LD A, R .db I_LD, 'A', 'R', 0, 0xed, 0x5f ; LD A, R
.db "LD",0,0, 'R', 'A', 0, 0xed, 0x4f ; LD R, A .db I_LD, 'R', 'A', 0, 0xed, 0x4f ; LD R, A
.db "LD",0,0, 'l', 0xb, 0, 0b01110000 , 0 ; LD (HL), r .db I_LD, 'l', 0xb, 0, 0b01110000 , 0 ; LD (HL), r
.db "LD",0,0, 0xb, 'l', 3, 0b01000110 , 0 ; LD r, (HL) .db I_LD, 0xb, 'l', 3, 0b01000110 , 0 ; LD r, (HL)
.db "LD",0,0, 'l', 'n', 0, 0x36 , 0 ; LD (HL), n .db I_LD, 'l', 'n', 0, 0x36 , 0 ; LD (HL), n
.db "LD",0,0, 0xb, 'n', 3, 0b00000110 , 0 ; LD r, (HL) .db I_LD, 0xb, 'n', 3, 0b00000110 , 0 ; LD r, (HL)
.db "LD",0,0, 0x3, 'N', 4, 0b00000001 , 0 ; LD dd, n .db I_LD, 0x3, 'N', 4, 0b00000001 , 0 ; LD dd, n
.db "LD",0,0, 'M', 'A', 0, 0x32 , 0 ; LD (NN), A .db I_LD, 'M', 'A', 0, 0x32 , 0 ; LD (NN), A
.db "LD",0,0, 'A', 'M', 0, 0x3a , 0 ; LD A, (NN) .db I_LD, 'A', 'M', 0, 0x3a , 0 ; LD A, (NN)
.db "LD",0,0, 'M', 'h', 0, 0x22 , 0 ; LD (NN), HL .db I_LD, 'M', 'h', 0, 0x22 , 0 ; LD (NN), HL
.db "LD",0,0, 'h', 'M', 0, 0x2a , 0 ; LD HL, (NN) .db I_LD, 'h', 'M', 0, 0x2a , 0 ; LD HL, (NN)
.db "LD",0,0, 'M', 'X', 0, 0xdd, 0x22 ; LD (NN), IX .db I_LD, 'M', 'X', 0, 0xdd, 0x22 ; LD (NN), IX
.db "LD",0,0, 'X', 'M', 0, 0xdd, 0x2a ; LD IX, (NN) .db I_LD, 'X', 'M', 0, 0xdd, 0x2a ; LD IX, (NN)
.db "LD",0,0, 'M', 'Y', 0, 0xfd, 0x22 ; LD (NN), IY .db I_LD, 'M', 'Y', 0, 0xfd, 0x22 ; LD (NN), IY
.db "LD",0,0, 'Y', 'M', 0, 0xfd, 0x2a ; LD IY, (NN) .db I_LD, 'Y', 'M', 0, 0xfd, 0x2a ; LD IY, (NN)
.db "LD",0,0,'M',0x3,0x44, 0xed, 0b01000011 ; LD (NN), dd .db I_LD, 'M', 0x3, 0x44, 0xed, 0b01000011 ; LD (NN), dd
.db "LD",0,0,0x3,'M',0x44, 0xed, 0b01001011 ; LD dd, (NN) .db I_LD, 0x3, 'M', 0x44, 0xed, 0b01001011 ; LD dd, (NN)
.db "LD",0,0, 'x','n',0x20 \ .dw handleLDIXn ; LD (IX+d), n .db I_LD, 'x', 'n', 0x20 \ .dw handleLDIXn ; LD (IX+d), n
.db "LD",0,0, 'y','n',0x20 \ .dw handleLDIYn ; LD (IY+d), n .db I_LD, 'y', 'n', 0x20 \ .dw handleLDIYn ; LD (IY+d), n
.db "LD",0,0, 'x',0xb,0x20 \ .dw handleLDIXr ; LD (IX+d), r .db I_LD, 'x', 0xb, 0x20 \ .dw handleLDIXr ; LD (IX+d), r
.db "LD",0,0, 'y',0xb,0x20 \ .dw handleLDIYr ; LD (IY+d), r .db I_LD, 'y', 0xb, 0x20 \ .dw handleLDIYr ; LD (IY+d), r
.db "LDD", 0, 0, 0, 0, 0xed, 0xa8 ; LDD .db I_LDD, 0, 0, 0, 0xed, 0xa8 ; LDD
.db "LDDR", 0, 0, 0, 0xed, 0xb8 ; LDDR .db I_LDDR,0, 0, 0, 0xed, 0xb8 ; LDDR
.db "LDI", 0, 0, 0, 0, 0xed, 0xa0 ; LDI .db I_LDI, 0, 0, 0, 0xed, 0xa0 ; LDI
.db "LDIR", 0, 0, 0, 0xed, 0xb0 ; LDIR .db I_LDIR,0, 0, 0, 0xed, 0xb0 ; LDIR
.db "NEG", 0, 0, 0, 0, 0xed, 0x44 ; NEG .db I_NEG, 0, 0, 0, 0xed, 0x44 ; NEG
.db "NOP", 0, 0, 0, 0, 0x00 , 0 ; NOP .db I_NOP, 0, 0, 0, 0x00 , 0 ; NOP
.db "OR",0,0, 'l', 0, 0, 0xb6 , 0 ; OR (HL) .db I_OR, 'l', 0, 0, 0xb6 , 0 ; OR (HL)
.db "OR",0,0, 0xb, 0, 0, 0b10110000 , 0 ; OR r .db I_OR, 0xb, 0, 0, 0b10110000 , 0 ; OR r
.db "OR",0,0, 'n', 0, 0, 0xf6 , 0 ; OR n .db I_OR, 'n', 0, 0, 0xf6 , 0 ; OR n
.db "OR",0,0, 'x', 0, 0, 0xdd, 0xb6 ; OR (IX+d) .db I_OR, 'x', 0, 0, 0xdd, 0xb6 ; OR (IX+d)
.db "OR",0,0, 'y', 0, 0, 0xfd, 0xb6 ; OR (IY+d) .db I_OR, 'y', 0, 0, 0xfd, 0xb6 ; OR (IY+d)
.db "OTDR", 0, 0, 0, 0xed, 0xbb ; OTDR .db I_OTDR,0, 0, 0, 0xed, 0xbb ; OTDR
.db "OTIR", 0, 0, 0, 0xed, 0xb3 ; OTIR .db I_OTIR,0, 0, 0, 0xed, 0xb3 ; OTIR
.db "OUT", 0, 'm', 'A', 0, 0xd3 , 0 ; OUT (n), A .db I_OUT, 'm', 'A', 0, 0xd3 , 0 ; OUT (n), A
.db "OUT", 0,'k',0xb,0x43, 0xed, 0b01000001 ; OUT (C), r .db I_OUT, 'k', 0xb, 0x43, 0xed, 0b01000001 ; OUT (C), r
.db "POP", 0, 0x1, 0, 4, 0b11000001 , 0 ; POP qq .db I_POP, 0x1, 0, 4, 0b11000001 , 0 ; POP qq
.db "PUSH", 0x1, 0, 4, 0b11000101 , 0 ; PUSH qq .db I_PUSH,0x1, 0, 4, 0b11000101 , 0 ; PUSH qq
.db "RET", 0, 0, 0, 0, 0xc9 , 0 ; RET .db I_RET, 0, 0, 0, 0xc9 , 0 ; RET
.db "RET", 0, 0xa, 0, 3, 0b11000000 , 0 ; RET cc .db I_RET, 0xa, 0, 3, 0b11000000 , 0 ; RET cc
.db "RLA", 0, 0, 0, 0, 0x17 , 0 ; RLA .db I_RLA, 0, 0, 0, 0x17 , 0 ; RLA
.db "RLCA", 0, 0, 0, 0x07 , 0 ; RLCA .db I_RLCA,0, 0, 0, 0x07 , 0 ; RLCA
.db "RRA", 0, 0, 0, 0, 0x1f , 0 ; RRA .db I_RRA, 0, 0, 0, 0x1f , 0 ; RRA
.db "RRCA", 0, 0, 0, 0x0f , 0 ; RRCA .db I_RRCA,0, 0, 0, 0x0f , 0 ; RRCA
.db "SBC", 0, 'A', 'l', 0, 0x9e , 0 ; SBC A, (HL) .db I_SBC, 'A', 'l', 0, 0x9e , 0 ; SBC A, (HL)
.db "SBC", 0, 'A', 0xb, 0, 0b10011000 , 0 ; SBC A, r .db I_SBC, 'A', 0xb, 0, 0b10011000 , 0 ; SBC A, r
.db "SCF", 0, 0, 0, 0, 0x37 , 0 ; SCF .db I_SCF, 0, 0, 0, 0x37 , 0 ; SCF
.db "SUB", 0, 'A', 'l', 0, 0x96 , 0 ; SUB A, (HL) .db I_SUB, 'A', 'l', 0, 0x96 , 0 ; SUB A, (HL)
.db "SUB", 0, 'A', 0xb, 0, 0b10010000 , 0 ; SUB A, r .db I_SUB, 'A', 0xb, 0, 0b10010000 , 0 ; SUB A, r
.db "SUB", 0, 'n', 0, 0, 0xd6 , 0 ; SUB n .db I_SUB, 'n', 0, 0, 0xd6 , 0 ; SUB n
.db "XOR", 0, 'l', 0, 0, 0xae , 0 ; XOR (HL) .db I_XOR, 'l', 0, 0, 0xae , 0 ; XOR (HL)
.db "XOR", 0, 0xb, 0, 0, 0b10101000 , 0 ; XOR r .db I_XOR, 0xb, 0, 0, 0b10101000 , 0 ; XOR r
; *** Variables *** ; *** Variables ***

7
apps/zasm/tests/geninstrs.py
View File

@ -118,11 +118,10 @@ def main():
with open(asmfile, 'rt') as fp: with open(asmfile, 'rt') as fp:
instrTbl = getDbLines(fp, 'instrTBl') instrTbl = getDbLines(fp, 'instrTBl')
for row in instrTbl: for row in instrTbl:
n = eval(row[0]) n = row[0][2:] # remove I_
# we need to adjust for zero-char name filling # we need to adjust for zero-char name filling
arg1index = 5 - len(n) a1 = eval(row[1])
a1 = eval(row[arg1index]) a2 = eval(row[2])
a2 = eval(row[arg1index+1])
args1 = genargs(a1) args1 = genargs(a1)
# special case handling # special case handling
if n == 'JP' and isinstance(a1, str) and a1 in 'xy': if n == 'JP' and isinstance(a1, str) and a1 in 'xy':

6
apps/zasm/tok.asm
View File

@ -16,6 +16,10 @@ tokenize:
call toWord call toWord
ld a, 4 ld a, 4
call readWord call readWord
ex hl, de
call getInstID
ex hl, de
ld (de), a
ret ret
tokenizeInstrArg: tokenizeInstrArg:
@ -62,6 +66,7 @@ isSepOrLineEnd:
; separator char. ; separator char.
readWord: readWord:
push bc push bc
push de
ld b, a ld b, a
.loop: .loop:
ld a, (hl) ld a, (hl)
@ -82,6 +87,7 @@ readWord:
xor a xor a
ld (de), a ld (de), a
.end: .end:
pop de
pop bc pop bc
ret ret