zasm: introduce the concept of instruction ID
It will make tokenization cleaner and it also makes the instruction table significantly more compact.
This commit is contained in:
Virgil Dupras
parent
79b5c701f6
commit
98ad223ee1
@ -4,7 +4,60 @@ ARGSPEC_TBL_CNT .equ 31
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; Number of rows in the primary instructions table
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INSTR_TBL_CNT .equ 135
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; size in bytes of each row in the primary instructions table
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INSTR_TBL_ROWSIZE .equ 9
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INSTR_TBL_ROWSIZE .equ 6
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; Instruction IDs They correspond to the index of the table in instrNames
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I_ADC .equ 0x00
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I_ADD .equ 0x01
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I_AND .equ 0x02
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I_BIT .equ 0x03
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I_CALL .equ 0x04
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I_CCF .equ 0x05
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I_CP .equ 0x06
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I_CPD .equ 0x07
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I_CPDR .equ 0x08
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I_CPI .equ 0x09
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I_CPIR .equ 0x0a
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I_CPL .equ 0x0b
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I_DAA .equ 0x0c
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I_DEC .equ 0x0d
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I_DI .equ 0x0e
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I_DJNZ .equ 0x0f
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I_EI .equ 0x10
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I_EX .equ 0x11
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I_EXX .equ 0x12
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I_HALT .equ 0x13
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I_IM .equ 0x14
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I_IN .equ 0x15
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I_INC .equ 0x16
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I_IND .equ 0x17
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I_INDR .equ 0x18
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I_INI .equ 0x19
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I_INIR .equ 0x1a
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I_JP .equ 0x1b
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I_JR .equ 0x1c
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I_LD .equ 0x1d
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I_LDD .equ 0x1e
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I_LDDR .equ 0x1f
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I_LDI .equ 0x20
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I_LDIR .equ 0x21
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I_NEG .equ 0x22
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I_NOP .equ 0x23
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I_OR .equ 0x24
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I_OTDR .equ 0x25
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I_OTIR .equ 0x26
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I_OUT .equ 0x27
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I_POP .equ 0x28
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I_PUSH .equ 0x29
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I_RET .equ 0x2a
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I_RLA .equ 0x2b
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I_RLCA .equ 0x2c
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I_RRA .equ 0x2d
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I_RRCA .equ 0x2e
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I_SBC .equ 0x2f
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I_SCF .equ 0x30
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I_SUB .equ 0x31
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I_XOR .equ 0x32
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I_BAD .equ 0xff
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; Checks whether A is 'N' or 'M'
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checkNOrM:
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@ -24,6 +77,31 @@ checknmxy:
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cp 'y'
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ret
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; Reads instruction mnemonic in (HL) and returns the corresponding ID (I_*)
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; in A. I_BAD if there's no match.
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getInstID:
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push bc
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push de
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ld b, I_XOR+1 ; I_XOR is the last
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ld de, instrNames
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.loop:
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ld a, 4
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call JUMP_STRNCMP
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ld a, 4
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call JUMP_ADDDE
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jr z, .match
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djnz .loop
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; no match
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ld a, I_BAD
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jr .end
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.match:
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ld a, I_XOR+1
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sub b
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.end:
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pop de
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pop bc
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ret
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; Parse the decimal char at A and extract it's 0-9 numerical value. Put the
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; result in A.
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;
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@ -350,24 +428,23 @@ matchArg:
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dec hl
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ret
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; Compare primary row at (DE) with string at tokInstr. Sets Z flag if there's a
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; Compare primary row at (DE) with ID at (tokInstr). Sets Z flag if there's a
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; match, reset if not.
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matchPrimaryRow:
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push hl
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push ix
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ld hl, tokInstr
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ld a, 4
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call JUMP_STRNCMP
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jr nz, .end
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; name matches, let's see the rest
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ld ixh, d
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ld ixl, e
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ld a, (tokInstr)
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cp (ix)
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jr nz, .end
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; name matches, let's see the rest
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ld hl, curArg1
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ld a, (ix+4)
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ld a, (ix+1)
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call matchArg
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jr nz, .end
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ld hl, curArg2
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ld a, (ix+5)
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ld a, (ix+2)
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call matchArg
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.end:
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pop ix
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@ -547,23 +624,23 @@ getUpcode:
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ld ixl, e
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; Are we a "special instruction"?
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bit 5, (ix+6)
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bit 5, (ix+3)
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jr z, .normalInstr ; not set: normal instruction
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; We are a special instruction. Fetch handler (little endian, remember).
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ld l, (ix+7)
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ld h, (ix+8)
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ld l, (ix+4)
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ld h, (ix+5)
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call callHL
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; We have our result written in curUpcode and C is set.
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jp .end
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.normalInstr:
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; we begin by writing our "base upcode", which can be one or two bytes
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ld a, (ix+7) ; first upcode
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ld a, (ix+4) ; first upcode
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ld (curUpcode), a
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ld de, curUpcode ; from this point, DE points to "where we are"
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; in terms of upcode writing.
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inc de ; make DE point to where we should write next.
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ld a, (ix+8) ; second upcode
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ld a, (ix+5) ; second upcode
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cp 0 ; do we have a second upcode?
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jr z, .onlyOneUpcode
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; we have two upcodes
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@ -571,11 +648,11 @@ getUpcode:
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inc de
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.onlyOneUpcode:
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; now, let's see if we're dealing with a group here
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ld a, (ix+4) ; first argspec
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ld a, (ix+1) ; first argspec
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call isGroupId
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jr z, .firstArgIsGroup
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; First arg not a group. Maybe second is?
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ld a, (ix+5) ; 2nd argspec
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ld a, (ix+2) ; 2nd argspec
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call isGroupId
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jr nz, .writeExtraBytes ; not a group? nothing to do. go to
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; next step: write extra bytes
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@ -592,7 +669,7 @@ getUpcode:
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; Now, we have our arg "group value" in A. Were going to need to
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; displace it left by the number of steps specified in the table.
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push af
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ld a, (ix+6) ; displacement bit
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ld a, (ix+3) ; displacement bit
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and a, 0xf ; we only use the lower nibble.
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ld b, a
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pop af
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@ -602,13 +679,13 @@ getUpcode:
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; to OR it with the opcode.
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; However, we first have to verify whether this ORing takes place on
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; the second upcode or the first.
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bit 6, (ix+6)
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bit 6, (ix+3)
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jr z, .firstUpcode ; not set: first upcode
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or (ix+8) ; second upcode
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or (ix+5) ; second upcode
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ld (curUpcode+1), a
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jr .writeExtraBytes
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.firstUpcode:
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or (ix+7) ; first upcode
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or (ix+4) ; first upcode
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ld (curUpcode), a
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jr .writeExtraBytes
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.writeExtraBytes:
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@ -618,13 +695,13 @@ getUpcode:
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; We still have our instruction row in IX and we have DE pointing to
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; where we should write next (which could be the second or the third
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; byte of curUpcode).
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ld a, (ix+4) ; first argspec
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ld a, (ix+1) ; first argspec
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ld hl, curArg1
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call checkNOrM
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jr z, .withWord
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call checknmxy
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jr z, .withByte
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ld a, (ix+5) ; second argspec
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ld a, (ix+2) ; second argspec
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ld hl, curArg2
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call checkNOrM
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jr z, .withWord
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@ -644,7 +721,7 @@ getUpcode:
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; HL points to our number
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; one last thing to check. Is the 7th bit on the displacement value set?
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; if yes, we have to decrease our value by 2. Uses for djnz and jr.
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bit 7, (ix+6)
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bit 7, (ix+3)
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jr z, .skipDecrease
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; Yup, it's set.
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dec (hl)
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@ -665,8 +742,8 @@ getUpcode:
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; At this point, everything that we needed to write in curUpcode is
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; written an C is 1 if we have no extra byte, 2 if we have an extra
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; byte and 3 if we have an extra word. What we need to do here is check
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; if ix+8 is non-zero and increase C if it is.
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ld a, (ix+8)
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; if ix+5 is non-zero and increase C if it is.
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ld a, (ix+5)
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cp 0
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jr z, .end ; no second upcode? nothing to do.
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; We have 2 base upcodes
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@ -711,7 +788,7 @@ parseTokens:
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push hl
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push de
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ld a, (tokInstr)
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cp 0
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cp I_BAD
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jr z, .error ; for now, we treat blank lines as errors
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ld hl, tokArg1
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ld de, curArg1
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@ -818,10 +895,64 @@ argGrpCC:
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argGrpABCDEHL:
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.db "BCDEHL_A" ; 0xb
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; Each row is 4 bytes wide, fill with zeroes
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instrNames:
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.db "ADC", 0
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.db "ADD", 0
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.db "AND", 0
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.db "BIT", 0
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.db "CALL"
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.db "CCF", 0
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.db "CP",0,0
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.db "CPD", 0
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.db "CPDR"
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.db "CPI", 0
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.db "CPIR"
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.db "CPL", 0
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.db "DAA", 0
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.db "DEC", 0
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.db "DI",0,0
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.db "DJNZ"
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.db "EI",0,0
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.db "EX",0,0
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.db "EXX", 0
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.db "HALT"
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.db "IM",0,0
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.db "IN",0,0
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.db "INC", 0
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.db "IND", 0
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.db "INDR"
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.db "INI", 0
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.db "INIR"
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.db "JP",0,0
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.db "JR",0,0
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.db "LD",0,0
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.db "LDD", 0
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.db "LDDR"
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.db "LDI", 0
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.db "LDIR"
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.db "NEG", 0
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.db "NOP", 0
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.db "OR",0,0
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.db "OTDR"
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.db "OTIR"
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.db "OUT", 0
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.db "POP", 0
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.db "PUSH"
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.db "RET", 0
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.db "RLA", 0
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.db "RLCA"
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.db "RRA", 0
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.db "RRCA"
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.db "SBC", 0
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.db "SCF", 0
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.db "SUB", 0
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.db "XOR", 0
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; This is a list of all supported instructions. Each row represent a combination
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; of instr/argspecs (which means more than one row per instr). Format:
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;
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; 4 bytes for the name (fill with zero)
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; 1 byte for the instruction ID
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; 1 byte for arg constant
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; 1 byte for 2nd arg constant
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; 1 byte displacement for group arguments + flags
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@ -842,141 +973,141 @@ argGrpABCDEHL:
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; custom code.
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instrTBl:
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.db "ADC", 0, 'A', 'l', 0, 0x8e , 0 ; ADC A, (HL)
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.db "ADC", 0, 'A', 0xb, 0, 0b10001000 , 0 ; ADC A, r
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.db "ADC", 0, 'A', 'n', 0, 0xce , 0 ; ADC A, n
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.db "ADC", 0,'h',0x3,0x44, 0xed, 0b01001010 ; ADC HL, ss
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.db "ADD", 0, 'A', 'l', 0, 0x86 , 0 ; ADD A, (HL)
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.db "ADD", 0, 'A', 0xb, 0, 0b10000000 , 0 ; ADD A, r
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.db "ADD", 0, 'A', 'n', 0, 0xc6 , 0 ; ADD A, n
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.db "ADD", 0, 'h', 0x3, 4, 0b00001001 , 0 ; ADD HL, ss
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.db "ADD", 0,'X',0x4,0x44, 0xdd, 0b00001001 ; ADD IX, pp
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.db "ADD", 0,'Y',0x5,0x44, 0xfd, 0b00001001 ; ADD IY, rr
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.db "ADD", 0, 'A', 'x', 0, 0xdd, 0x86 ; ADD A, (IX+d)
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.db "ADD", 0, 'A', 'y', 0, 0xfd, 0x86 ; ADD A, (IY+d)
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.db "AND", 0, 'l', 0, 0, 0xa6 , 0 ; AND (HL)
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.db "AND", 0, 0xb, 0, 0, 0b10100000 , 0 ; AND r
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.db "AND", 0, 'n', 0, 0, 0xe6 , 0 ; AND n
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.db "AND", 0, 'x', 0, 0, 0xdd, 0xa6 ; AND (IX+d)
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.db "AND", 0, 'y', 0, 0, 0xfd, 0xa6 ; AND (IY+d)
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.db "BIT", 0,'n','l',0x20 \ .dw handleBITHL ; BIT b, (HL)
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.db "BIT", 0,'n','x',0x20 \ .dw handleBITIX ; BIT b, (IX+d)
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.db "BIT", 0,'n','y',0x20 \ .dw handleBITIY ; BIT b, (IY+d)
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.db "BIT", 0,'n',0xb,0x20 \ .dw handleBITR ; BIT b, r
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.db "CALL", 0xa, 'N', 3, 0b11000100 , 0 ; CALL cc, NN
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.db "CALL", 'N', 0, 0, 0xcd , 0 ; CALL NN
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.db "CCF", 0, 0, 0, 0, 0x3f , 0 ; CCF
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.db "CP",0,0, 'l', 0, 0, 0xbe , 0 ; CP (HL)
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.db "CP",0,0, 0xb, 0, 0, 0b10111000 , 0 ; CP r
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.db "CP",0,0, 'n', 0, 0, 0xfe , 0 ; CP n
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.db "CP",0,0, 'x', 0, 0, 0xdd, 0xbe ; CP (IX+d)
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.db "CP",0,0, 'y', 0, 0, 0xfd, 0xbe ; CP (IY+d)
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.db "CPD", 0, 0, 0, 0, 0xed, 0xa9 ; CPD
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.db "CPDR", 0, 0, 0, 0xed, 0xb9 ; CPDR
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.db "CPI", 0, 0, 0, 0, 0xed, 0xa1 ; CPI
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.db "CPIR", 0, 0, 0, 0xed, 0xb1 ; CPIR
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.db "CPL", 0, 0, 0, 0, 0x2f , 0 ; CPL
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.db "DAA", 0, 0, 0, 0, 0x27 , 0 ; DAA
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.db "DEC", 0, 'l', 0, 0, 0x35 , 0 ; DEC (HL)
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.db "DEC", 0, 'X', 0, 0, 0xdd , 0x2b ; DEC IX
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.db "DEC", 0, 'x', 0, 0, 0xdd , 0x35 ; DEC (IX+d)
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.db "DEC", 0, 'Y', 0, 0, 0xfd , 0x2b ; DEC IY
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.db "DEC", 0, 'y', 0, 0, 0xfd , 0x35 ; DEC (IY+d)
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.db "DEC", 0, 0xb, 0, 3, 0b00000101 , 0 ; DEC r
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.db "DEC", 0, 0x3, 0, 4, 0b00001011 , 0 ; DEC ss
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.db "DI",0,0, 0, 0, 0, 0xf3 , 0 ; DI
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.db "DJNZ", 'n', 0,0x80, 0x10 , 0 ; DJNZ e
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.db "EI",0,0, 0, 0, 0, 0xfb , 0 ; EI
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.db "EX",0,0, 'p', 'h', 0, 0xe3 , 0 ; EX (SP), HL
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.db "EX",0,0, 'p', 'X', 0, 0xdd, 0xe3 ; EX (SP), IX
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.db "EX",0,0, 'p', 'Y', 0, 0xfd, 0xe3 ; EX (SP), IY
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.db "EX",0,0, 'a', 'f', 0, 0x08 , 0 ; EX AF, AF'
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.db "EX",0,0, 'd', 'h', 0, 0xeb , 0 ; EX DE, HL
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.db "EXX", 0, 0, 0, 0, 0xd9 , 0 ; EXX
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.db "HALT", 0, 0, 0, 0x76 , 0 ; HALT
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.db "IM",0,0,'n', 0,0x20 \ .dw handleIM ; IM {0,1,2}
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.db "IN",0,0, 'A', 'm', 0, 0xdb , 0 ; IN A, (n)
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.db "IN",0,0,0xb,'k',0x43, 0xed, 0b01000000 ; IN r, (C)
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.db "INC", 0, 'l', 0, 0, 0x34 , 0 ; INC (HL)
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.db "INC", 0, 'X', 0, 0, 0xdd , 0x23 ; INC IX
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.db "INC", 0, 'x', 0, 0, 0xdd , 0x34 ; INC (IX+d)
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.db "INC", 0, 'Y', 0, 0, 0xfd , 0x23 ; INC IY
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.db "INC", 0, 'y', 0, 0, 0xfd , 0x34 ; INC (IY+d)
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.db "INC", 0, 0xb, 0, 3, 0b00000100 , 0 ; INC r
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.db "INC", 0, 0x3, 0, 4, 0b00000011 , 0 ; INC ss
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.db "IND", 0, 0, 0, 0, 0xed, 0xaa ; IND
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.db "INDR", 0, 0, 0, 0xed, 0xba ; INDR
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.db "INI", 0, 0, 0, 0, 0xed, 0xa2 ; INI
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.db "INIR", 0, 0, 0, 0xed, 0xb2 ; INIR
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.db "JP",0,0, 'l', 0, 0, 0xe9 , 0 ; JP (HL)
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.db "JP",0,0, 0xa, 'N', 3, 0b11000010 , 0 ; JP cc, NN
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.db "JP",0,0, 'N', 0, 0, 0xc3 , 0 ; JP NN
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.db "JP",0,0, 'x', 0,0x20 \ .dw handleJPIX ; JP (IX)
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.db "JP",0,0, 'y', 0,0x20 \ .dw handleJPIY ; JP (IY)
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.db "JR",0,0, 'n', 0,0x80, 0x18 , 0 ; JR e
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.db "JR",0,0,'C','n',0x80, 0x38 , 0 ; JR C, e
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.db "JR",0,0,'=','n',0x80, 0x30 , 0 ; JR NC, e
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.db "JR",0,0,'Z','n',0x80, 0x28 , 0 ; JR Z, e
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.db "JR",0,0,'z','n',0x80, 0x20 , 0 ; JR NZ, e
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.db "LD",0,0, 'c', 'A', 0, 0x02 , 0 ; LD (BC), A
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.db "LD",0,0, 'e', 'A', 0, 0x12 , 0 ; LD (DE), A
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.db "LD",0,0, 'A', 'c', 0, 0x0a , 0 ; LD A, (BC)
|
||||
.db "LD",0,0, 'A', 'e', 0, 0x1a , 0 ; LD A, (DE)
|
||||
.db "LD",0,0, 's', 'h', 0, 0xf9 , 0 ; LD SP, HL
|
||||
.db "LD",0,0, 'A', 'I', 0, 0xed, 0x57 ; LD A, I
|
||||
.db "LD",0,0, 'I', 'A', 0, 0xed, 0x47 ; LD I, A
|
||||
.db "LD",0,0, 'A', 'R', 0, 0xed, 0x5f ; LD A, R
|
||||
.db "LD",0,0, 'R', 'A', 0, 0xed, 0x4f ; LD R, A
|
||||
.db "LD",0,0, 'l', 0xb, 0, 0b01110000 , 0 ; LD (HL), r
|
||||
.db "LD",0,0, 0xb, 'l', 3, 0b01000110 , 0 ; LD r, (HL)
|
||||
.db "LD",0,0, 'l', 'n', 0, 0x36 , 0 ; LD (HL), n
|
||||
.db "LD",0,0, 0xb, 'n', 3, 0b00000110 , 0 ; LD r, (HL)
|
||||
.db "LD",0,0, 0x3, 'N', 4, 0b00000001 , 0 ; LD dd, n
|
||||
.db "LD",0,0, 'M', 'A', 0, 0x32 , 0 ; LD (NN), A
|
||||
.db "LD",0,0, 'A', 'M', 0, 0x3a , 0 ; LD A, (NN)
|
||||
.db "LD",0,0, 'M', 'h', 0, 0x22 , 0 ; LD (NN), HL
|
||||
.db "LD",0,0, 'h', 'M', 0, 0x2a , 0 ; LD HL, (NN)
|
||||
.db "LD",0,0, 'M', 'X', 0, 0xdd, 0x22 ; LD (NN), IX
|
||||
.db "LD",0,0, 'X', 'M', 0, 0xdd, 0x2a ; LD IX, (NN)
|
||||
.db "LD",0,0, 'M', 'Y', 0, 0xfd, 0x22 ; LD (NN), IY
|
||||
.db "LD",0,0, 'Y', 'M', 0, 0xfd, 0x2a ; LD IY, (NN)
|
||||
.db "LD",0,0,'M',0x3,0x44, 0xed, 0b01000011 ; LD (NN), dd
|
||||
.db "LD",0,0,0x3,'M',0x44, 0xed, 0b01001011 ; LD dd, (NN)
|
||||
.db "LD",0,0, 'x','n',0x20 \ .dw handleLDIXn ; LD (IX+d), n
|
||||
.db "LD",0,0, 'y','n',0x20 \ .dw handleLDIYn ; LD (IY+d), n
|
||||
.db "LD",0,0, 'x',0xb,0x20 \ .dw handleLDIXr ; LD (IX+d), r
|
||||
.db "LD",0,0, 'y',0xb,0x20 \ .dw handleLDIYr ; LD (IY+d), r
|
||||
.db "LDD", 0, 0, 0, 0, 0xed, 0xa8 ; LDD
|
||||
.db "LDDR", 0, 0, 0, 0xed, 0xb8 ; LDDR
|
||||
.db "LDI", 0, 0, 0, 0, 0xed, 0xa0 ; LDI
|
||||
.db "LDIR", 0, 0, 0, 0xed, 0xb0 ; LDIR
|
||||
.db "NEG", 0, 0, 0, 0, 0xed, 0x44 ; NEG
|
||||
.db "NOP", 0, 0, 0, 0, 0x00 , 0 ; NOP
|
||||
.db "OR",0,0, 'l', 0, 0, 0xb6 , 0 ; OR (HL)
|
||||
.db "OR",0,0, 0xb, 0, 0, 0b10110000 , 0 ; OR r
|
||||
.db "OR",0,0, 'n', 0, 0, 0xf6 , 0 ; OR n
|
||||
.db "OR",0,0, 'x', 0, 0, 0xdd, 0xb6 ; OR (IX+d)
|
||||
.db "OR",0,0, 'y', 0, 0, 0xfd, 0xb6 ; OR (IY+d)
|
||||
.db "OTDR", 0, 0, 0, 0xed, 0xbb ; OTDR
|
||||
.db "OTIR", 0, 0, 0, 0xed, 0xb3 ; OTIR
|
||||
.db "OUT", 0, 'm', 'A', 0, 0xd3 , 0 ; OUT (n), A
|
||||
.db "OUT", 0,'k',0xb,0x43, 0xed, 0b01000001 ; OUT (C), r
|
||||
.db "POP", 0, 0x1, 0, 4, 0b11000001 , 0 ; POP qq
|
||||
.db "PUSH", 0x1, 0, 4, 0b11000101 , 0 ; PUSH qq
|
||||
.db "RET", 0, 0, 0, 0, 0xc9 , 0 ; RET
|
||||
.db "RET", 0, 0xa, 0, 3, 0b11000000 , 0 ; RET cc
|
||||
.db "RLA", 0, 0, 0, 0, 0x17 , 0 ; RLA
|
||||
.db "RLCA", 0, 0, 0, 0x07 , 0 ; RLCA
|
||||
.db "RRA", 0, 0, 0, 0, 0x1f , 0 ; RRA
|
||||
.db "RRCA", 0, 0, 0, 0x0f , 0 ; RRCA
|
||||
.db "SBC", 0, 'A', 'l', 0, 0x9e , 0 ; SBC A, (HL)
|
||||
.db "SBC", 0, 'A', 0xb, 0, 0b10011000 , 0 ; SBC A, r
|
||||
.db "SCF", 0, 0, 0, 0, 0x37 , 0 ; SCF
|
||||
.db "SUB", 0, 'A', 'l', 0, 0x96 , 0 ; SUB A, (HL)
|
||||
.db "SUB", 0, 'A', 0xb, 0, 0b10010000 , 0 ; SUB A, r
|
||||
.db "SUB", 0, 'n', 0, 0, 0xd6 , 0 ; SUB n
|
||||
.db "XOR", 0, 'l', 0, 0, 0xae , 0 ; XOR (HL)
|
||||
.db "XOR", 0, 0xb, 0, 0, 0b10101000 , 0 ; XOR r
|
||||
.db I_ADC, 'A', 'l', 0, 0x8e , 0 ; ADC A, (HL)
|
||||
.db I_ADC, 'A', 0xb, 0, 0b10001000 , 0 ; ADC A, r
|
||||
.db I_ADC, 'A', 'n', 0, 0xce , 0 ; ADC A, n
|
||||
.db I_ADC, 'h', 0x3, 0x44, 0xed, 0b01001010 ; ADC HL, ss
|
||||
.db I_ADD, 'A', 'l', 0, 0x86 , 0 ; ADD A, (HL)
|
||||
.db I_ADD, 'A', 0xb, 0, 0b10000000 , 0 ; ADD A, r
|
||||
.db I_ADD, 'A', 'n', 0, 0xc6 , 0 ; ADD A, n
|
||||
.db I_ADD, 'h', 0x3, 4, 0b00001001 , 0 ; ADD HL, ss
|
||||
.db I_ADD, 'X', 0x4, 0x44, 0xdd, 0b00001001 ; ADD IX, pp
|
||||
.db I_ADD, 'Y', 0x5, 0x44, 0xfd, 0b00001001 ; ADD IY, rr
|
||||
.db I_ADD, 'A', 'x', 0, 0xdd, 0x86 ; ADD A, (IX+d)
|
||||
.db I_ADD, 'A', 'y', 0, 0xfd, 0x86 ; ADD A, (IY+d)
|
||||
.db I_AND, 'l', 0, 0, 0xa6 , 0 ; AND (HL)
|
||||
.db I_AND, 0xb, 0, 0, 0b10100000 , 0 ; AND r
|
||||
.db I_AND, 'n', 0, 0, 0xe6 , 0 ; AND n
|
||||
.db I_AND, 'x', 0, 0, 0xdd, 0xa6 ; AND (IX+d)
|
||||
.db I_AND, 'y', 0, 0, 0xfd, 0xa6 ; AND (IY+d)
|
||||
.db I_BIT, 'n', 'l', 0x20 \ .dw handleBITHL ; BIT b, (HL)
|
||||
.db I_BIT, 'n', 'x', 0x20 \ .dw handleBITIX ; BIT b, (IX+d)
|
||||
.db I_BIT, 'n', 'y', 0x20 \ .dw handleBITIY ; BIT b, (IY+d)
|
||||
.db I_BIT, 'n', 0xb, 0x20 \ .dw handleBITR ; BIT b, r
|
||||
.db I_CALL,0xa, 'N', 3, 0b11000100 , 0 ; CALL cc, NN
|
||||
.db I_CALL,'N', 0, 0, 0xcd , 0 ; CALL NN
|
||||
.db I_CCF, 0, 0, 0, 0x3f , 0 ; CCF
|
||||
.db I_CP, 'l', 0, 0, 0xbe , 0 ; CP (HL)
|
||||
.db I_CP, 0xb, 0, 0, 0b10111000 , 0 ; CP r
|
||||
.db I_CP, 'n', 0, 0, 0xfe , 0 ; CP n
|
||||
.db I_CP, 'x', 0, 0, 0xdd, 0xbe ; CP (IX+d)
|
||||
.db I_CP, 'y', 0, 0, 0xfd, 0xbe ; CP (IY+d)
|
||||
.db I_CPD, 0, 0, 0, 0xed, 0xa9 ; CPD
|
||||
.db I_CPDR,0, 0, 0, 0xed, 0xb9 ; CPDR
|
||||
.db I_CPI, 0, 0, 0, 0xed, 0xa1 ; CPI
|
||||
.db I_CPIR,0, 0, 0, 0xed, 0xb1 ; CPIR
|
||||
.db I_CPL, 0, 0, 0, 0x2f , 0 ; CPL
|
||||
.db I_DAA, 0, 0, 0, 0x27 , 0 ; DAA
|
||||
.db I_DEC, 'l', 0, 0, 0x35 , 0 ; DEC (HL)
|
||||
.db I_DEC, 'X', 0, 0, 0xdd, 0x2b ; DEC IX
|
||||
.db I_DEC, 'x', 0, 0, 0xdd, 0x35 ; DEC (IX+d)
|
||||
.db I_DEC, 'Y', 0, 0, 0xfd, 0x2b ; DEC IY
|
||||
.db I_DEC, 'y', 0, 0, 0xfd, 0x35 ; DEC (IY+d)
|
||||
.db I_DEC, 0xb, 0, 3, 0b00000101 , 0 ; DEC r
|
||||
.db I_DEC, 0x3, 0, 4, 0b00001011 , 0 ; DEC ss
|
||||
.db I_DI, 0, 0, 0, 0xf3 , 0 ; DI
|
||||
.db I_DJNZ,'n', 0, 0x80, 0x10 , 0 ; DJNZ e
|
||||
.db I_EI, 0, 0, 0, 0xfb , 0 ; EI
|
||||
.db I_EX, 'p', 'h', 0, 0xe3 , 0 ; EX (SP), HL
|
||||
.db I_EX, 'p', 'X', 0, 0xdd, 0xe3 ; EX (SP), IX
|
||||
.db I_EX, 'p', 'Y', 0, 0xfd, 0xe3 ; EX (SP), IY
|
||||
.db I_EX, 'a', 'f', 0, 0x08 , 0 ; EX AF, AF'
|
||||
.db I_EX, 'd', 'h', 0, 0xeb , 0 ; EX DE, HL
|
||||
.db I_EXX, 0, 0, 0, 0xd9 , 0 ; EXX
|
||||
.db I_HALT,0, 0, 0, 0x76 , 0 ; HALT
|
||||
.db I_IM, 'n', 0, 0x20 \ .dw handleIM ; IM {0,1,2}
|
||||
.db I_IN, 'A', 'm', 0, 0xdb , 0 ; IN A, (n)
|
||||
.db I_IN, 0xb, 'k', 0x43, 0xed, 0b01000000 ; IN r, (C)
|
||||
.db I_INC, 'l', 0, 0, 0x34 , 0 ; INC (HL)
|
||||
.db I_INC, 'X', 0, 0, 0xdd , 0x23 ; INC IX
|
||||
.db I_INC, 'x', 0, 0, 0xdd , 0x34 ; INC (IX+d)
|
||||
.db I_INC, 'Y', 0, 0, 0xfd , 0x23 ; INC IY
|
||||
.db I_INC, 'y', 0, 0, 0xfd , 0x34 ; INC (IY+d)
|
||||
.db I_INC, 0xb, 0, 3, 0b00000100 , 0 ; INC r
|
||||
.db I_INC, 0x3, 0, 4, 0b00000011 , 0 ; INC ss
|
||||
.db I_IND, 0, 0, 0, 0xed, 0xaa ; IND
|
||||
.db I_INDR,0, 0, 0, 0xed, 0xba ; INDR
|
||||
.db I_INI, 0, 0, 0, 0xed, 0xa2 ; INI
|
||||
.db I_INIR,0, 0, 0, 0xed, 0xb2 ; INIR
|
||||
.db I_JP, 'l', 0, 0, 0xe9 , 0 ; JP (HL)
|
||||
.db I_JP, 0xa, 'N', 3, 0b11000010 , 0 ; JP cc, NN
|
||||
.db I_JP, 'N', 0, 0, 0xc3 , 0 ; JP NN
|
||||
.db I_JP, 'x', 0, 0x20 \ .dw handleJPIX ; JP (IX)
|
||||
.db I_JP, 'y', 0, 0x20 \ .dw handleJPIY ; JP (IY)
|
||||
.db I_JR, 'n', 0, 0x80, 0x18 , 0 ; JR e
|
||||
.db I_JR, 'C', 'n', 0x80, 0x38 , 0 ; JR C, e
|
||||
.db I_JR, '=', 'n', 0x80, 0x30 , 0 ; JR NC, e
|
||||
.db I_JR, 'Z', 'n', 0x80, 0x28 , 0 ; JR Z, e
|
||||
.db I_JR, 'z', 'n', 0x80, 0x20 , 0 ; JR NZ, e
|
||||
.db I_LD, 'c', 'A', 0, 0x02 , 0 ; LD (BC), A
|
||||
.db I_LD, 'e', 'A', 0, 0x12 , 0 ; LD (DE), A
|
||||
.db I_LD, 'A', 'c', 0, 0x0a , 0 ; LD A, (BC)
|
||||
.db I_LD, 'A', 'e', 0, 0x1a , 0 ; LD A, (DE)
|
||||
.db I_LD, 's', 'h', 0, 0xf9 , 0 ; LD SP, HL
|
||||
.db I_LD, 'A', 'I', 0, 0xed, 0x57 ; LD A, I
|
||||
.db I_LD, 'I', 'A', 0, 0xed, 0x47 ; LD I, A
|
||||
.db I_LD, 'A', 'R', 0, 0xed, 0x5f ; LD A, R
|
||||
.db I_LD, 'R', 'A', 0, 0xed, 0x4f ; LD R, A
|
||||
.db I_LD, 'l', 0xb, 0, 0b01110000 , 0 ; LD (HL), r
|
||||
.db I_LD, 0xb, 'l', 3, 0b01000110 , 0 ; LD r, (HL)
|
||||
.db I_LD, 'l', 'n', 0, 0x36 , 0 ; LD (HL), n
|
||||
.db I_LD, 0xb, 'n', 3, 0b00000110 , 0 ; LD r, (HL)
|
||||
.db I_LD, 0x3, 'N', 4, 0b00000001 , 0 ; LD dd, n
|
||||
.db I_LD, 'M', 'A', 0, 0x32 , 0 ; LD (NN), A
|
||||
.db I_LD, 'A', 'M', 0, 0x3a , 0 ; LD A, (NN)
|
||||
.db I_LD, 'M', 'h', 0, 0x22 , 0 ; LD (NN), HL
|
||||
.db I_LD, 'h', 'M', 0, 0x2a , 0 ; LD HL, (NN)
|
||||
.db I_LD, 'M', 'X', 0, 0xdd, 0x22 ; LD (NN), IX
|
||||
.db I_LD, 'X', 'M', 0, 0xdd, 0x2a ; LD IX, (NN)
|
||||
.db I_LD, 'M', 'Y', 0, 0xfd, 0x22 ; LD (NN), IY
|
||||
.db I_LD, 'Y', 'M', 0, 0xfd, 0x2a ; LD IY, (NN)
|
||||
.db I_LD, 'M', 0x3, 0x44, 0xed, 0b01000011 ; LD (NN), dd
|
||||
.db I_LD, 0x3, 'M', 0x44, 0xed, 0b01001011 ; LD dd, (NN)
|
||||
.db I_LD, 'x', 'n', 0x20 \ .dw handleLDIXn ; LD (IX+d), n
|
||||
.db I_LD, 'y', 'n', 0x20 \ .dw handleLDIYn ; LD (IY+d), n
|
||||
.db I_LD, 'x', 0xb, 0x20 \ .dw handleLDIXr ; LD (IX+d), r
|
||||
.db I_LD, 'y', 0xb, 0x20 \ .dw handleLDIYr ; LD (IY+d), r
|
||||
.db I_LDD, 0, 0, 0, 0xed, 0xa8 ; LDD
|
||||
.db I_LDDR,0, 0, 0, 0xed, 0xb8 ; LDDR
|
||||
.db I_LDI, 0, 0, 0, 0xed, 0xa0 ; LDI
|
||||
.db I_LDIR,0, 0, 0, 0xed, 0xb0 ; LDIR
|
||||
.db I_NEG, 0, 0, 0, 0xed, 0x44 ; NEG
|
||||
.db I_NOP, 0, 0, 0, 0x00 , 0 ; NOP
|
||||
.db I_OR, 'l', 0, 0, 0xb6 , 0 ; OR (HL)
|
||||
.db I_OR, 0xb, 0, 0, 0b10110000 , 0 ; OR r
|
||||
.db I_OR, 'n', 0, 0, 0xf6 , 0 ; OR n
|
||||
.db I_OR, 'x', 0, 0, 0xdd, 0xb6 ; OR (IX+d)
|
||||
.db I_OR, 'y', 0, 0, 0xfd, 0xb6 ; OR (IY+d)
|
||||
.db I_OTDR,0, 0, 0, 0xed, 0xbb ; OTDR
|
||||
.db I_OTIR,0, 0, 0, 0xed, 0xb3 ; OTIR
|
||||
.db I_OUT, 'm', 'A', 0, 0xd3 , 0 ; OUT (n), A
|
||||
.db I_OUT, 'k', 0xb, 0x43, 0xed, 0b01000001 ; OUT (C), r
|
||||
.db I_POP, 0x1, 0, 4, 0b11000001 , 0 ; POP qq
|
||||
.db I_PUSH,0x1, 0, 4, 0b11000101 , 0 ; PUSH qq
|
||||
.db I_RET, 0, 0, 0, 0xc9 , 0 ; RET
|
||||
.db I_RET, 0xa, 0, 3, 0b11000000 , 0 ; RET cc
|
||||
.db I_RLA, 0, 0, 0, 0x17 , 0 ; RLA
|
||||
.db I_RLCA,0, 0, 0, 0x07 , 0 ; RLCA
|
||||
.db I_RRA, 0, 0, 0, 0x1f , 0 ; RRA
|
||||
.db I_RRCA,0, 0, 0, 0x0f , 0 ; RRCA
|
||||
.db I_SBC, 'A', 'l', 0, 0x9e , 0 ; SBC A, (HL)
|
||||
.db I_SBC, 'A', 0xb, 0, 0b10011000 , 0 ; SBC A, r
|
||||
.db I_SCF, 0, 0, 0, 0x37 , 0 ; SCF
|
||||
.db I_SUB, 'A', 'l', 0, 0x96 , 0 ; SUB A, (HL)
|
||||
.db I_SUB, 'A', 0xb, 0, 0b10010000 , 0 ; SUB A, r
|
||||
.db I_SUB, 'n', 0, 0, 0xd6 , 0 ; SUB n
|
||||
.db I_XOR, 'l', 0, 0, 0xae , 0 ; XOR (HL)
|
||||
.db I_XOR, 0xb, 0, 0, 0b10101000 , 0 ; XOR r
|
||||
|
||||
|
||||
; *** Variables ***
|
||||
|
||||
@ -118,11 +118,10 @@ def main():
|
||||
with open(asmfile, 'rt') as fp:
|
||||
instrTbl = getDbLines(fp, 'instrTBl')
|
||||
for row in instrTbl:
|
||||
n = eval(row[0])
|
||||
n = row[0][2:] # remove I_
|
||||
# we need to adjust for zero-char name filling
|
||||
arg1index = 5 - len(n)
|
||||
a1 = eval(row[arg1index])
|
||||
a2 = eval(row[arg1index+1])
|
||||
a1 = eval(row[1])
|
||||
a2 = eval(row[2])
|
||||
args1 = genargs(a1)
|
||||
# special case handling
|
||||
if n == 'JP' and isinstance(a1, str) and a1 in 'xy':
|
||||
|
||||
@ -16,6 +16,10 @@ tokenize:
|
||||
call toWord
|
||||
ld a, 4
|
||||
call readWord
|
||||
ex hl, de
|
||||
call getInstID
|
||||
ex hl, de
|
||||
ld (de), a
|
||||
ret
|
||||
|
||||
tokenizeInstrArg:
|
||||
@ -62,6 +66,7 @@ isSepOrLineEnd:
|
||||
; separator char.
|
||||
readWord:
|
||||
push bc
|
||||
push de
|
||||
ld b, a
|
||||
.loop:
|
||||
ld a, (hl)
|
||||
@ -82,6 +87,7 @@ readWord:
|
||||
xor a
|
||||
ld (de), a
|
||||
.end:
|
||||
pop de
|
||||
pop bc
|
||||
ret
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user