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stm8_dasm.asm
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stm8_dasm.asm
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;;
; Copyright Jacques Deschênes 2019
; This file is part of MONA
;
; MONA is free software: you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation, either version 3 of the License, or
; (at your option) any later version.
;
; MONA is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with MONA. If not, see <http://www.gnu.org/licenses/>.
;;
;----------------------------------------------------------------------------
; Here how I proceded:
; according to this table: https://en.wikipedia.org/wiki/STM8#Instruction_set
; I tried to group opcode sharing the same common bits field. For example
; JRXX instructions all begin with 0010 . Only the least 4 bits changes to
; indicate what condition to test. So I decode them in reljump group.
;-----------------------------------------------------------------------------
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; STM8 disassembler
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.module STM8_DASM
.nlist
.include "inc/stm8_mnemonics.inc"
.list
.area CODE
.ascii "DASM"
;-----------------------------------------------
; addressing mode format string
;
; r register
; b bit position
; imm8 byte immediate value
; imm16 word immediate value
; extd 24 bits address
; ofs8 short offset
; ofs16 long offset
; ptr8 short pointer
; ptr16 long pointer
; adr direct address value
; ind indirect address in register X|Y|SP
; rel relative address
;-----------------------------------------------
; variables used by disassembler
ACC24=MODE+2
ACC16=ACC24+1
ACC8=ACC16+1
dasm_flags=ACC8+1 ; boolean flags
;------------------------------------------
; boolean flags in variable 'dasm_flags'
;------------------------------------------
F_CC = 1 ; save carry flag here
F_FOUND = 2 ; set when a search_code succeed
; decoder functions index values
IDX.FN_IMPL = 0
IDX.FN_OFS8_IDX = 1
IDX.FN_ADR16_B = 2
IDX.FN_R_OFS8_IDX = 3
IDX.FN_R_IMM8 = 4
IDX.FN_R_IMM16 = 5
IDX.FN_R_IDX = 6
IDX.FN_IDX_R = 7
IDX.FN_R_ADR8 = 8
IDX.FN_R_ADR16 = 9
IDX.FN_IMM8 = 10
IDX.FN_ADR16 = 11
IDX.FN_ADR24 = 12
IDX.FN_ADR8_R = 13
IDX.FN_ADR16_R = 14
IDX.FN_ADR24_R = 15
IDX.FN_R_ADR24 = 16
IDX.FN_ADR16_IMM8 = 17
IDX.FN_ADR16_ADR16=18
IDX.FN_ADR8_ADR8=19
IDX.FN_ADR8 = 20
IDX.FN_R_PTR8 = 21
IDX.FN_R_PTR16 = 22
IDX.FN_PTR8_R = 23
IDX.FN_PTR16_R = 24
IDX.FN_R_PTR8_IDX = 25
IDX.FN_R_PTR16_IDX = 26
IDX.FN_PTR8_IDX_R = 27
IDX.FN_PTR16_IDX_R = 28
IDX.FN_OFS8_IDX_R = 29
IDX.FN_OFS16_IDX = 30
IDX.FN_R_OFS16_IDX = 31
IDX.FN_OFS16_IDX_R= 32
IDX.FN_R_OFS24_IDX=33
IDX.FN_OFS24_IDX_R=34
IDX.FN_PTR16 = 35
IDX.FN_PTR8 = 36
IDX.FN_PTR16_IDX=37
IDX.FN_PTR8_IDX=38
; decoder function indexed table
fn_index:
.word fn_implied ; 0
.word fn_ofs8_idx ; 1
.word fn_adr16_bit ; 2
.word fn_r_ofs8_idx ; 3
.word fn_r_imm8 ; 4
.word fn_r_imm16 ; 5
.word fn_r_idx ; 6
.word fn_idx_r ; 7
.word fn_r_adr8 ; 8
.word fn_r_adr16 ; 9
.word fn_imm8 ; 10
.word fn_adr16 ; 11
.word fn_adr24 ; 12
.word fn_adr8_r ; 13
.word fn_adr16_r ; 14
.word fn_adr24_r ; 15
.word fn_r_adr24 ; 16
.word fn_adr16_imm8 ; 17
.word fn_adr16_adr16 ; 18
.word fn_adr8_adr8 ; 19
.word fn_adr8 ; 20
.word fn_r_ptr8 ; 21
.word fn_r_ptr16 ; 22
.word fn_ptr8_r ; 23
.word fn_ptr16_r ; 24
.word fn_r_ptr8_idx ; 25
.word fn_r_ptr16_idx ; 26
.word fn_ptr8_idx_r ; 27
.word fn_ptr16_idx_r ; 28
.word fn_ofs8_idx_r ; 29
.word fn_ofs16_idx ; 30
.word fn_r_ofs16_idx ; 31
.word fn_ofs16_idx_r ; 32
.word fn_r_ofs24_idx; 33
.word fn_ofs24_idx_r; 34
.word fn_ptr16; 35
.word fn_ptr8 ; 36
.word fn_ptr16_idx ; 37
.word fn_ptr8_idx ; 38
;-------------------------------------
; each opcode as a table entry
; that give information on how to
; decode it.
; each entry is a structure.
; each element of structure is an index for other tables
; .byte opcode ; operating code
; .byte mnemo_idx ; instruction mnemonic index
; .byte fn* ; decoder function index
; .byte dest; destination index
; .byte src; src index
; A 0 in mnemonic field mark end of table
;-------------------------------------
FIELD_OPCODE = 0;
FIELD_MNEMO= 1;
FIELD_FN=2;
FIELD_DEST=3;
FIELD_SRC=4
STRUCT_SIZE=5 ;
; table for opcodes without prefix
codes:
; form op (ofs8,r) 0x0n 0x6n 0xED
.byte 0x00,IDX.NEG,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x03,IDX.CPL,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x04,IDX.SRL,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x06,IDX.RRC,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x07,IDX.SRA,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x08,IDX.SLL,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x09,IDX.RLC,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x0a,IDX.DEC,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x0c,IDX.INC,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x0d,IDX.TNZ,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x0e,IDX.SWAP,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x0f,IDX.CLR,IDX.FN_OFS8_IDX,IDX.SP,IDX.SP
.byte 0x60,IDX.NEG,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x63,IDX.CPL,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x64,IDX.SRL,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x66,IDX.RRC,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x67,IDX.SRA,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x68,IDX.SLL,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x69,IDX.RLC,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x6A,IDX.DEC,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x6C,IDX.INC,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x6D,IDX.TNZ,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x6E,IDX.SWAP,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0x6F,IDX.CLR,IDX.FN_OFS8_IDX,IDX.X,IDX.X
.byte 0xED,IDX.CALL,IDX.FN_OFS8_IDX,IDX.X,IDX.X
; form op r,(ofs8,r) 0x1n 0x7B 0xEn
.byte 0x10,IDX.SUB,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x11,IDX.CP,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x12,IDX.SBC,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x13,IDX.CPW,IDX.FN_R_OFS8_IDX,IDX.X,IDX.SP
.byte 0x14,IDX.AND,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x15,IDX.BCP,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x16,IDX.LDW,IDX.FN_R_OFS8_IDX,IDX.Y,IDX.SP
.byte 0x18,IDX.XOR,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x19,IDX.ADC,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x1A,IDX.OR,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x1B,IDX.ADD,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0x1E,IDX.LDW,IDX.FN_R_OFS8_IDX,IDX.X,IDX.SP
.byte 0x7B,IDX.LD,IDX.FN_R_OFS8_IDX,IDX.A,IDX.SP
.byte 0xE0,IDX.SUB,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xE1,IDX.CP,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xE2,IDX.SBC,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xE3,IDX.CPW,IDX.FN_R_OFS8_IDX,IDX.Y,IDX.X
.byte 0xE4,IDX.AND,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xE5,IDX.BCP,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xE6,IDX.LD,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xE8,IDX.XOR,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xE9,IDX.ADC,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xEA,IDX.OR,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xEB,IDX.ADD,IDX.FN_R_OFS8_IDX,IDX.A,IDX.X
.byte 0xEE,IDX.LDW,IDX.FN_R_OFS8_IDX,IDX.X,IDX.X
;form op r,(ofs16,r)
.byte 0xD6,IDX.LD,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xDB,IDX.ADD,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
;form op (ofs16,r),r
.byte 0xDF,IDX.LDW,IDX.FN_OFS16_IDX_R,IDX.X,IDX.Y
;form op (ofs8,r),r
.byte 0x17,IDX.LDW,IDX.FN_OFS8_IDX_R,IDX.SP,IDX.Y
.byte 0x1F,IDX.LDW,IDX.FN_OFS8_IDX_R,IDX.SP,IDX.X
.byte 0x6B,IDX.LD,IDX.FN_OFS8_IDX_R,IDX.SP,IDX.A
.byte 0xE7,IDX.LD,IDX.FN_OFS8_IDX_R,IDX.X,IDX.A
.byte 0xEF,IDX.LDW,IDX.FN_OFS8_IDX_R,IDX.X,IDX.Y
; opcode with implied arguments 0x4n 0x5n 0x8n 0x9n
.byte 0x01,IDX.RRWA,IDX.FN_IMPL,IDX.X,0
.byte 0x02,IDX.RLWA,IDX.FN_IMPL,IDX.X,0
.byte 0x40,IDX.NEG,IDX.FN_IMPL,IDX.A,0
.byte 0x41,IDX.EXG,IDX.FN_IMPL,IDX.A,IDX.XL
.byte 0x42,IDX.MUL,IDX.FN_IMPL,IDX.X,IDX.A
.byte 0x43,IDX.CPL,IDX.FN_IMPL,IDX.A,0
.byte 0x44,IDX.SRL,IDX.FN_IMPL,IDX.A,0
.byte 0x46,IDX.RRC,IDX.FN_IMPL,IDX.A,0
.byte 0x47,IDX.SRA,IDX.FN_IMPL,IDX.A,0
.byte 0x48,IDX.SLL,IDX.FN_IMPL,IDX.A,0
.byte 0x49,IDX.RLC,IDX.FN_IMPL,IDX.A,0
.byte 0x4A,IDX.DEC,IDX.FN_IMPL,IDX.A,0
.byte 0x4C,IDX.INC,IDX.FN_IMPL,IDX.A,0
.byte 0x4D,IDX.TNZ,IDX.FN_IMPL,IDX.A,0
.byte 0x4E,IDX.SWAP,IDX.FN_IMPL,IDX.A,0
.byte 0x4F,IDX.CLR,IDX.FN_IMPL,IDX.A,0
.byte 0x50,IDX.NEGW,IDX.FN_IMPL,IDX.X,0
.byte 0x51,IDX.EXGW,IDX.FN_IMPL,IDX.X,IDX.Y
.byte 0x53,IDX.CPLW,IDX.FN_IMPL,IDX.X,0
.byte 0x54,IDX.SRLW,IDX.FN_IMPL,IDX.X,0
.byte 0x56,IDX.RRCW,IDX.FN_IMPL,IDX.X,0
.byte 0x57,IDX.SRAW,IDX.FN_IMPL,IDX.X,0
.byte 0x58,IDX.SLLW,IDX.FN_IMPL,IDX.X,0
.byte 0x59,IDX.RLCW,IDX.FN_IMPL,IDX.X,0
.byte 0x5A,IDX.DECW,IDX.FN_IMPL,IDX.X,0
.byte 0x5C,IDX.INCW,IDX.FN_IMPL,IDX.X,0
.byte 0x5D,IDX.TNZW,IDX.FN_IMPL,IDX.X,0
.byte 0x5E,IDX.SWAPW,IDX.FN_IMPL,IDX.X,0
.byte 0x5F,IDX.CLRW,IDX.FN_IMPL,IDX.X,0
.byte 0x61,IDX.EXG,IDX.FN_IMPL,IDX.A,IDX.YL
.byte 0x62,IDX.DIV,IDX.FN_IMPL,IDX.X,IDX.A
.byte 0x65,IDX.DIVW,IDX.FN_IMPL,IDX.X,IDX.Y
.byte 0x80,IDX.IRET,IDX.FN_IMPL,0,0
.byte 0x81,IDX.RET,IDX.FN_IMPL,0,0
.byte 0x83,IDX.TRAP,IDX.FN_IMPL,0,0
.byte 0x84,IDX.POP,IDX.FN_IMPL,IDX.A,0
.byte 0x85,IDX.POPW,IDX.FN_IMPL,IDX.X,0
.byte 0x86,IDX.POP,IDX.FN_IMPL,IDX.CC,0
.byte 0x87,IDX.RETF,IDX.FN_IMPL,0,0
.byte 0x88,IDX.PUSH,IDX.FN_IMPL,IDX.A,0
.byte 0x89,IDX.PUSHW,IDX.FN_IMPL,IDX.X,0
.byte 0x8A,IDX.PUSH,IDX.FN_IMPL,IDX.CC,0
.byte 0x8B,IDX.BREAK,IDX.FN_IMPL,0,0
.byte 0x8C,IDX.CCF,IDX.FN_IMPL,0,0
.byte 0x8E,IDX.HALT,IDX.FN_IMPL,0,0
.byte 0x8F,IDX.WFI,IDX.FN_IMPL,0,0
.byte 0x93,IDX.LDW,IDX.FN_IMPL,IDX.X,IDX.Y
.byte 0x94,IDX.LDW,IDX.FN_IMPL,IDX.SP,IDX.X
.byte 0x95,IDX.LD,IDX.FN_IMPL,IDX.XH,IDX.A
.byte 0x96,IDX.LDW,IDX.FN_IMPL,IDX.X,IDX.SP
.byte 0x97,IDX.LD,IDX.FN_IMPL,IDX.XL,IDX.A
.byte 0x98,IDX.RCF,IDX.FN_IMPL,0,0
.byte 0x99,IDX.SCF,IDX.FN_IMPL,0,0
.byte 0x9A,IDX.RIM,IDX.FN_IMPL,0,0
.byte 0x9B,IDX.SIM,IDX.FN_IMPL,0,0
.byte 0x9C,IDX.RVF,IDX.FN_IMPL,0,0
.byte 0x9D,IDX.NOP,IDX.FN_IMPL,0,0
.byte 0x9E,IDX.LD,IDX.FN_IMPL,IDX.A,IDX.XH
.byte 0x9F,IDX.LD,IDX.FN_IMPL,IDX.A,IDX.XL
; form op r,(r) | op (r)
.byte 0x70,IDX.NEG,IDX.FN_R_IDX,IDX.X,0
.byte 0x73,IDX.CPL,IDX.FN_R_IDX,IDX.X,0
.byte 0x74,IDX.SRL,IDX.FN_R_IDX,IDX.X,0
.byte 0x76,IDX.RRC,IDX.FN_R_IDX,IDX.X,0
.byte 0x77,IDX.SRA,IDX.FN_R_IDX,IDX.X,0
.byte 0x78,IDX.SLL,IDX.FN_R_IDX,IDX.X,0
.byte 0x79,IDX.RLC,IDX.FN_R_IDX,IDX.X,0
.byte 0x7A,IDX.DEC,IDX.FN_R_IDX,IDX.X,0
.byte 0x7C,IDX.INC,IDX.FN_R_IDX,IDX.X,0
.byte 0x7D,IDX.TNZ,IDX.FN_R_IDX,IDX.X,0
.byte 0x7E,IDX.SWAP,IDX.FN_R_IDX,IDX.X,0
.byte 0x7F,IDX.CLR,IDX.FN_R_IDX,IDX.X,0
.byte 0xF0,IDX.SUB,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xF1,IDX.CP,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xF2,IDX.SBC,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xF3,IDX.CPW,IDX.FN_R_IDX,IDX.Y,IDX.X
.byte 0xF4,IDX.AND,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xF5,IDX.BCP,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xF6,IDX.LD,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xF8,IDX.XOR,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xF9,IDX.ADC,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xFA,IDX.OR,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xFB,IDX.ADD,IDX.FN_R_IDX,IDX.A,IDX.X
.byte 0xFC,IDX.JP,IDX.FN_R_IDX,IDX.X,0
.byte 0xFD,IDX.CALL,IDX.FN_R_IDX,IDX.X,0
.byte 0xFE,IDX.LDW,IDX.FN_R_IDX,IDX.X,IDX.X
; form op (r),r
.byte 0xF7,IDX.LD,IDX.FN_IDX_R,IDX.X,IDX.A
.byte 0xFF,IDX.LDW,IDX.FN_IDX_R,IDX.X,IDX.Y
; form op r,#imm8 0xAn
.byte 0x52,IDX.SUB,IDX.FN_R_IMM8,IDX.SP,0
.byte 0x5B,IDX.ADDW,IDX.FN_R_IMM8,IDX.SP,0
.byte 0xa0,IDX.SUB,IDX.FN_R_IMM8,IDX.A,0
.byte 0xa1,IDX.CP,IDX.FN_R_IMM8,IDX.A,0
.byte 0xa2,IDX.SBC,IDX.FN_R_IMM8,IDX.A,0
.byte 0xa4,IDX.AND,IDX.FN_R_IMM8,IDX.A,0
.byte 0xa5,IDX.BCP,IDX.FN_R_IMM8,IDX.A,0
.byte 0xa6,IDX.LD,IDX.FN_R_IMM8,IDX.A,0
.byte 0xa8,IDX.XOR,IDX.FN_R_IMM8,IDX.A,0
.byte 0xa9,IDX.ADC,IDX.FN_R_IMM8,IDX.A,0
.byte 0xaA,IDX.OR,IDX.FN_R_IMM8,IDX.A,0
.byte 0xaB,IDX.ADD,IDX.FN_R_IMM8,IDX.A,0
; form op r,#imm16
.byte 0x1C,IDX.ADDW,IDX.FN_R_IMM16,IDX.X,0
.byte 0x1D,IDX.SUBW,IDX.FN_R_IMM16,IDX.X,0
.byte 0xa3,IDX.CPW,IDX.FN_R_IMM16,IDX.X,0
.byte 0xae,IDX.LDW,IDX.FN_R_IMM16,IDX.X,0
.byte 0xCB,IDX.ADD,IDX.FN_R_IMM16,IDX.A,0
; form op adr8
.byte 0x30,IDX.NEG,IDX.FN_ADR8,0,0
.byte 0x33,IDX.CPL,IDX.FN_ADR8,0,0
.byte 0x34,IDX.SRL,IDX.FN_ADR8,0,0
.byte 0x36,IDX.RRC,IDX.FN_ADR8,0,0
.byte 0x37,IDX.SRA,IDX.FN_ADR8,0,0
.byte 0x38,IDX.SLL,IDX.FN_ADR8,0,0
.byte 0x39,IDX.RLC,IDX.FN_ADR8,0,0
.byte 0x3A,IDX.DEC,IDX.FN_ADR8,0,0
.byte 0x3C,IDX.INC,IDX.FN_ADR8,0,0
.byte 0x3D,IDX.TNZ,IDX.FN_ADR8,0,0
.byte 0x3E,IDX.SWAP,IDX.FN_ADR8,0,0
.byte 0x3F,IDX.CLR,IDX.FN_ADR8,0,0
.byte 0xAD,IDX.CALLR,IDX.FN_ADR8,0,0
; form op adr16
.byte 0x32,IDX.POP,IDX.FN_ADR16,0,0
.byte 0x3B,IDX.PUSH,IDX.FN_ADR16,0,0
.byte 0xcc,IDX.JP,IDX.FN_ADR16,0,0
.byte 0xcd,IDX.CALL,IDX.FN_ADR16,0,0
;form op r,adr16
.byte 0x31,IDX.EXG,IDX.FN_R_ADR16,IDX.A,0
;form op adr24
.byte 0x82,IDX.INT,IDX.FN_ADR24,0,0
.byte 0x8D,IDX.CALLF,IDX.FN_ADR24,0,0
.byte 0xac,IDX.JPF,IDX.FN_ADR24,0,0
;form op r,adr8
.byte 0xB0,IDX.SUB,IDX.FN_R_ADR8,IDX.A,0
.byte 0xB1,IDX.CP,IDX.FN_R_ADR8,IDX.A,0
.byte 0xB2,IDX.SBC,IDX.FN_R_ADR8,IDX.A,0
.byte 0xB3,IDX.CPW,IDX.FN_R_ADR8,IDX.X,0
.byte 0xB4,IDX.AND,IDX.FN_R_ADR8,IDX.A,0
.byte 0xB5,IDX.BCP,IDX.FN_R_ADR8,IDX.A,0
.byte 0xB6,IDX.LD,IDX.FN_R_ADR8,IDX.A,0
.byte 0xB8,IDX.XOR,IDX.FN_R_ADR8,IDX.A,0
.byte 0xB9,IDX.ADC,IDX.FN_R_ADR8,IDX.A,0
.byte 0xBA,IDX.OR,IDX.FN_R_ADR8,IDX.A,0
.byte 0xBB,IDX.ADD,IDX.FN_R_ADR8,IDX.A,0
.byte 0xBE,IDX.LDW,IDX.FN_R_ADR8,IDX.X,0
;form op r,adr16
.byte 0xC0,IDX.SUB,IDX.FN_R_ADR16,IDX.A,0
.byte 0xC1,IDX.CP,IDX.FN_R_ADR16,IDX.A,0
.byte 0xC2,IDX.SBC,IDX.FN_R_ADR16,IDX.A,0
.byte 0xC3,IDX.CPW,IDX.FN_R_ADR16,IDX.X,0
.byte 0xC4,IDX.AND,IDX.FN_R_ADR16,IDX.A,0
.byte 0xC5,IDX.BCP,IDX.FN_R_ADR16,IDX.A,0
.byte 0xC6,IDX.LD,IDX.FN_R_ADR16,IDX.A,0
.byte 0xC8,IDX.XOR,IDX.FN_R_ADR16,IDX.A,0
.byte 0xc9,IDX.ADC,IDX.FN_R_ADR16,IDX.A,0
.byte 0xCA,IDX.OR,IDX.FN_R_ADR16,IDX.A,0
.byte 0xCB,IDX.ADD,IDX.FN_R_ADR16,IDX.A,0
.byte 0xCE,IDX.LDW,IDX.FN_R_ADR16,IDX.X,0
;form op r,adr24
.byte 0xBC,IDX.LDF,IDX.FN_R_ADR24,IDX.A,0
; form op #imm8
.byte 0x4B,IDX.PUSH,IDX.FN_IMM8,0,0
;form op adr8,r
.byte 0xB7,IDX.LD,IDX.FN_ADR8_R,0,IDX.A
.byte 0xBF,IDX.LDW,IDX.FN_ADR8_R,0,IDX.X
;form op adr16,r
.byte 0xC7,IDX.LD,IDX.FN_ADR16_R,0,IDX.A
.byte 0xCF,IDX.LDW,IDX.FN_ADR16_R,0,IDX.X
;form op adr24,r
.byte 0xBD,IDX.LDF,IDX.FN_ADR24_R,0,IDX.A
;form op adr16,#imm8
.byte 0x35,IDX.MOV,IDX.FN_ADR16_IMM8,0,0
;form op adr8,adr8
.byte 0x45,IDX.MOV,IDX.FN_ADR8_ADR8,0,0
;form op adr16,adr16
.byte 0x55,IDX.MOV,IDX.FN_ADR16_ADR16,0,0
;form op r,(off16,r)
.byte 0xD0,IDX.SUB,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xD1,IDX.CP,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xD2,IDX.SBC,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xD3,IDX.CPW,IDX.FN_R_OFS16_IDX,IDX.Y,IDX.X
.byte 0xD4,IDX.AND,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xD5,IDX.BCP,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xD6,IDX.LD,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xD8,IDX.XOR,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xD9,IDX.ADC,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xDA,IDX.OR,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xDB,IDX.ADD,IDX.FN_R_OFS16_IDX,IDX.A,IDX.X
.byte 0xDE,IDX.LDW,IDX.FN_R_OFS16_IDX,IDX.X,IDX.X
;form op (off16,r),r
.byte 0xD7,IDX.LD,IDX.FN_OFS16_IDX_R,IDX.X,IDX.A
; form op r,(ofs24,r)
.byte 0xAF,IDX.LDF,IDX.FN_R_OFS24_IDX,IDX.A,IDX.X
; form op (ofs24,r),r
.byte 0xA7,IDX.LDF,IDX.FN_OFS24_IDX_R,IDX.X,IDX.A
;form op (ofs16,r)
.byte 0xDC,IDX.JP,IDX.FN_OFS16_IDX,0,IDX.X
.byte 0xDD,IDX.CALL,IDX.FN_OFS16_IDX,0,IDX.X
;form op (ofs8,r)
.byte 0xEC,IDX.JP,IDX.FN_OFS8_IDX,IDX.X,0
.byte 0XED,IDX.CALL,IDX.FN_OFS8_IDX,IDX.X,0
.byte 0,0,0,0,0
; table for opcodes with 0x72 prefix
p72_codes:
;form op r,[ptr16]
.byte 0xC6,IDX.LD,IDX.FN_R_PTR16,IDX.A,0
.byte 0xC9,IDX.ADC,IDX.FN_R_PTR16,IDX.A,0
.byte 0xCb,IDX.ADD,IDX.FN_R_PTR16,IDX.A,0
;form op r,([ptr16],r)
.byte 0xd6,IDX.LD,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xd9,IDX.ADC,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xDB,IDX.ADD,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
;from implied
.byte 0x8F,IDX.WFE,IDX.FN_IMPL,0,0
;form op r,[ptr16]
.byte 0xC0,IDX.SUB,IDX.FN_R_PTR16,IDX.A,0
.byte 0xC1,IDX.CP,IDX.FN_R_PTR16,IDX.A,0
.byte 0xC2,IDX.SBC,IDX.FN_R_PTR16,IDX.A,0
.byte 0xC3,IDX.CPW,IDX.FN_R_PTR16,IDX.X,0
.byte 0xC4,IDX.AND,IDX.FN_R_PTR16,IDX.A,0
.byte 0xC5,IDX.BCP,IDX.FN_R_PTR16,IDX.A,0
.byte 0xC6,IDX.LD,IDX.FN_R_PTR16,IDX.A,0
.byte 0xC8,IDX.XOR,IDX.FN_R_PTR16,IDX.A,0
.byte 0xc9,IDX.ADC,IDX.FN_R_PTR16,IDX.A,0
.byte 0xCA,IDX.OR,IDX.FN_R_PTR16,IDX.A,0
.byte 0xCB,IDX.ADD,IDX.FN_R_PTR16,IDX.A,0
.byte 0xCE,IDX.LDW,IDX.FN_R_PTR16,IDX.X,0
.byte 0xCE,IDX.LDW,IDX.FN_R_PTR16,IDX.X,0
; form op r,([ptr16],r)
.byte 0xD0,IDX.SUB,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xD1,IDX.CP,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xD2,IDX.SBC,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xD3,IDX.CPW,IDX.FN_R_PTR16_IDX,IDX.Y,IDX.X
.byte 0xD4,IDX.AND,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xD5,IDX.BCP,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xD6,IDX.LD,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xD8,IDX.XOR,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xD9,IDX.ADC,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xDA,IDX.OR,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xDB,IDX.ADD,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
.byte 0xDE,IDX.LDW,IDX.FN_R_PTR16_IDX,IDX.X,IDX.X
; form op r,(ofs8,r)
.byte 0xF0,IDX.SUBW,IDX.FN_R_OFS8_IDX,IDX.X,IDX.SP
.byte 0xF2,IDX.SUBW,IDX.FN_R_OFS8_IDX,IDX.Y,IDX.SP
.byte 0xF9,IDX.ADDW,IDX.FN_R_OFS8_IDX,IDX.Y,IDX.SP
.byte 0xFB,IDX.ADDW,IDX.FN_R_OFS8_IDX,IDX.X,IDX.SP
; form op [ptr16],r
.byte 0xC7,IDX.LD,IDX.FN_PTR16_R,0,IDX.A
.byte 0xCF,IDX.LDW,IDX.FN_PTR16_R,0,IDX.X
; form op ([ptr16],r),r
.byte 0xD7,IDX.LD,IDX.FN_PTR16_IDX_R,IDX.X,IDX.A
.byte 0xDF,IDX.LDW,IDX.FN_PTR16_IDX_R,IDX.X,IDX.Y
;form op [ptr16] 0x3n
.byte 0x30,IDX.NEG,IDX.FN_PTR16,0,0
.byte 0x33,IDX.CPL,IDX.FN_PTR16,0,0
.byte 0x34,IDX.SRL,IDX.FN_PTR16,0,0
.byte 0x36,IDX.RRC,IDX.FN_PTR16,0,0
.byte 0x37,IDX.SRA,IDX.FN_PTR16,0,0
.byte 0x38,IDX.SLL,IDX.FN_PTR16,0,0
.byte 0x39,IDX.RLC,IDX.FN_PTR16,0,0
.byte 0x3A,IDX.DEC,IDX.FN_PTR16,0,0
.byte 0x3C,IDX.INC,IDX.FN_PTR16,0,0
.byte 0x3D,IDX.TNZ,IDX.FN_PTR16,0,0
.byte 0x3E,IDX.SWAP,IDX.FN_PTR16,0,0
.byte 0x3F,IDX.CLR,IDX.FN_PTR16,0,0
; form op (ofs16,r) 0x4n
.byte 0x40,IDX.NEG,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x43,IDX.CPL,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x44,IDX.SRL,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x46,IDX.RRC,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x47,IDX.SRA,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x48,IDX.SLL,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x49,IDX.RLC,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x4A,IDX.DEC,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x4C,IDX.INC,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x4D,IDX.TNZ,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x4E,IDX.SWAP,IDX.FN_OFS16_IDX,IDX.X,0
.byte 0x4F,IDX.CLR,IDX.FN_OFS16_IDX,IDX.X,0
; form op adr16 0x5n
.byte 0x50,IDX.NEG,IDX.FN_ADR16,0,0
.byte 0x53,IDX.CPL,IDX.FN_ADR16,0,0
.byte 0x54,IDX.SRL,IDX.FN_ADR16,0,0
.byte 0x56,IDX.RRC,IDX.FN_ADR16,0,0
.byte 0x57,IDX.SRA,IDX.FN_ADR16,0,0
.byte 0x58,IDX.SLL,IDX.FN_ADR16,0,0
.byte 0x59,IDX.RLC,IDX.FN_ADR16,0,0
.byte 0x5A,IDX.DEC,IDX.FN_ADR16,0,0
.byte 0x5C,IDX.INC,IDX.FN_ADR16,0,0
.byte 0x5D,IDX.TNZ,IDX.FN_ADR16,0,0
.byte 0x5E,IDX.SWAP,IDX.FN_ADR16,0,0
.byte 0x5F,IDX.CLR,IDX.FN_ADR16,0,0
; form op ([ptr16],x) 0x6n
.byte 0x60,IDX.NEG,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x63,IDX.CPL,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x64,IDX.SRL,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x66,IDX.RRC,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x67,IDX.SRA,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x68,IDX.SLL,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x69,IDX.RLC,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x6A,IDX.DEC,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x6C,IDX.INC,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x6D,IDX.TNZ,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x6E,IDX.SWAP,IDX.FN_PTR16_IDX,IDX.X,0
.byte 0x6F,IDX.CLR,IDX.FN_PTR16_IDX,IDX.X,0
; form op r,#imm16
.byte 0xA2,IDX.SUBW,IDX.FN_R_IMM16,IDX.Y,0
.byte 0xA9,IDX.ADDW,IDX.FN_R_IMM16,IDX.Y,0
; form op r,adr16
.byte 0xB0,IDX.SUBW,IDX.FN_R_ADR16,IDX.X,0
.byte 0xB2,IDX.SUBW,IDX.FN_R_ADR16,IDX.Y,0
.byte 0xB9,IDX.ADDW,IDX.FN_R_ADR16,IDX.Y,0
.byte 0xBB,IDX.ADDW,IDX.FN_R_ADR16,IDX.X,0
; form op r,(ofs8,r)
.byte 0xF9,IDX.ADDW,IDX.FN_R_OFS8_IDX,IDX.Y,IDX.SP
.byte 0xFB,IDX.ADDW,IDX.FN_R_OFS8_IDX,IDX.X,IDX.SP
; form op [ptr16]
.byte 0xCC,IDX.JP,IDX.FN_PTR16,0,0
.byte 0,0,0,0,0
; table for opcodes with 0x90 prefix
p90_codes:
; form op (ofs8,r)
.byte 0x60,IDX.NEG,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x63,IDX.CPL,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x64,IDX.SRL,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x66,IDX.RRC,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x67,IDX.SRA,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x68,IDX.SLL,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x69,IDX.RLC,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x6A,IDX.DEC,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x6C,IDX.INC,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x6D,IDX.TNZ,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x6E,IDX.SWAP,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0x6F,IDX.CLR,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0xEC,IDX.JP,IDX.FN_OFS8_IDX,IDX.Y,0
.byte 0xED,IDX.CALL,IDX.FN_OFS8_IDX,IDX.Y,0
; form op r,(osf8,r)
.byte 0xE0,IDX.SUB,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xE1,IDX.CP,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xE2,IDX.SBC,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xE3,IDX.CPW,IDX.FN_R_OFS8_IDX,IDX.X,IDX.Y
.byte 0xE4,IDX.AND,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xE5,IDX.BCP,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xE6,IDX.LD,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xE8,IDX.XOR,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xE9,IDX.ADC,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xEA,IDX.OR,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xEB,IDX.ADD,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xEE,IDX.LDW,IDX.FN_R_OFS8_IDX,IDX.Y,IDX.Y
;form op r,(ofs16,r)
.byte 0xD6,IDX.LD,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xDB,IDX.ADD,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
; opcode with implied arguments
.byte 0x01,IDX.RRWA,IDX.FN_IMPL,IDX.Y,0
.byte 0x02,IDX.RLWA,IDX.FN_IMPL,IDX.Y,0
.byte 0x40,IDX.NEG,IDX.FN_IMPL,IDX.A,0
.byte 0x42,IDX.MUL,IDX.FN_IMPL,IDX.Y,IDX.A
.byte 0x43,IDX.CPL,IDX.FN_IMPL,IDX.A,0
.byte 0x44,IDX.SRL,IDX.FN_IMPL,IDX.A,0
.byte 0x46,IDX.RRC,IDX.FN_IMPL,IDX.A,0
.byte 0x47,IDX.SRA,IDX.FN_IMPL,IDX.A,0
.byte 0x48,IDX.SLL,IDX.FN_IMPL,IDX.A,0
.byte 0x49,IDX.RLC,IDX.FN_IMPL,IDX.A,0
.byte 0x4A,IDX.DEC,IDX.FN_IMPL,IDX.A,0
.byte 0x4C,IDX.INC,IDX.FN_IMPL,IDX.A,0
.byte 0x4D,IDX.TNZ,IDX.FN_IMPL,IDX.A,0
.byte 0x4E,IDX.SWAP,IDX.FN_IMPL,IDX.A,0
.byte 0x4F,IDX.CLR,IDX.FN_IMPL,IDX.A,0
.byte 0x50,IDX.NEGW,IDX.FN_IMPL,IDX.Y,0
.byte 0x53,IDX.CPLW,IDX.FN_IMPL,IDX.Y,0
.byte 0x54,IDX.SRLW,IDX.FN_IMPL,IDX.Y,0
.byte 0x56,IDX.RRCW,IDX.FN_IMPL,IDX.Y,0
.byte 0x57,IDX.SRAW,IDX.FN_IMPL,IDX.Y,0
.byte 0x58,IDX.SLLW,IDX.FN_IMPL,IDX.Y,0
.byte 0x59,IDX.RLCW,IDX.FN_IMPL,IDX.Y,0
.byte 0x5A,IDX.DECW,IDX.FN_IMPL,IDX.Y,0
.byte 0x5C,IDX.INCW,IDX.FN_IMPL,IDX.Y,0
.byte 0x5D,IDX.TNZW,IDX.FN_IMPL,IDX.X,0
.byte 0x5E,IDX.SWAPW,IDX.FN_IMPL,IDX.Y,0
.byte 0x5F,IDX.CLRW,IDX.FN_IMPL,IDX.Y,0
.byte 0x62,IDX.DIV,IDX.FN_IMPL,IDX.Y,IDX.A
.byte 0x85,IDX.POPW,IDX.FN_IMPL,IDX.Y,0
.byte 0x89,IDX.PUSHW,IDX.FN_IMPL,IDX.Y,0
.byte 0x93,IDX.LDW,IDX.FN_IMPL,IDX.Y,IDX.X
.byte 0x94,IDX.LDW,IDX.FN_IMPL,IDX.SP,IDX.Y
.byte 0x95,IDX.LD,IDX.FN_IMPL,IDX.YH,IDX.A
.byte 0x96,IDX.LDW,IDX.FN_IMPL,IDX.Y,IDX.SP
.byte 0x97,IDX.LD,IDX.FN_IMPL,IDX.YL,IDX.A
.byte 0x9E,IDX.LD,IDX.FN_IMPL,IDX.A,IDX.YH
.byte 0x9F,IDX.LD,IDX.FN_IMPL,IDX.A,IDX.YL
.byte 0xFB,IDX.ADD,IDX.FN_IMPL,IDX.A,IDX.Y
; form op r,(r) | op (r)
.byte 0x70,IDX.NEG,IDX.FN_R_IDX,IDX.Y,0
.byte 0x73,IDX.CPL,IDX.FN_R_IDX,IDX.Y,0
.byte 0x74,IDX.SRL,IDX.FN_R_IDX,IDX.Y,0
.byte 0x76,IDX.RRC,IDX.FN_R_IDX,IDX.Y,0
.byte 0x77,IDX.SRA,IDX.FN_R_IDX,IDX.Y,0
.byte 0x78,IDX.SLL,IDX.FN_R_IDX,IDX.Y,0
.byte 0x79,IDX.RLC,IDX.FN_R_IDX,IDX.Y,0
.byte 0x7A,IDX.DEC,IDX.FN_R_IDX,IDX.Y,0
.byte 0x7C,IDX.INC,IDX.FN_R_IDX,IDX.Y,0
.byte 0x7D,IDX.TNZ,IDX.FN_R_IDX,IDX.Y,0
.byte 0x7E,IDX.SWAP,IDX.FN_R_IDX,IDX.Y,0
.byte 0x7F,IDX.CLR,IDX.FN_R_IDX,IDX.Y,0
.byte 0xF0,IDX.SUB,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xF1,IDX.CP,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xF2,IDX.SBC,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xF3,IDX.CPW,IDX.FN_R_IDX,IDX.X,IDX.Y
.byte 0xF4,IDX.AND,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xF6,IDX.LD,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xF8,IDX.XOR,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xF9,IDX.ADC,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xFA,IDX.OR,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xFB,IDX.ADD,IDX.FN_R_IDX,IDX.A,IDX.Y
.byte 0xFC,IDX.JP,IDX.FN_R_IDX,IDX.Y,0
.byte 0xFD,IDX.CALL,IDX.FN_R_IDX,IDX.Y,0
.byte 0xFE,IDX.LDW,IDX.FN_R_IDX,IDX.Y,IDX.Y
; form op (r),r
.byte 0xF7,IDX.LD,IDX.FN_IDX_R,IDX.Y,IDX.A
.byte 0xFF,IDX.LDW,IDX.FN_IDX_R,IDX.Y,IDX.X
; form op r,#imm16
.byte 0xae,IDX.LDW,IDX.FN_R_IMM16,IDX.Y,IDX.Y
; from op r,(ofs8,r)
.byte 0xE9,IDX.ADC,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
.byte 0xEB,IDX.ADD,IDX.FN_R_OFS8_IDX,IDX.A,IDX.Y
; form op adr8,r
.byte 0xBF,IDX.LDW,IDX.FN_ADR8_R,0,IDX.Y
; form op r,adr8
.byte 0xBE,IDX.LDW,IDX.FN_R_ADR8,IDX.Y,0
; form op r,adr16
.byte 0xCE,IDX.LDW,IDX.FN_R_ADR16,IDX.Y,0
;form op (ofs8,r),r
.byte 0xE7,IDX.LD,IDX.FN_OFS8_IDX_R,IDX.Y,IDX.A
.byte 0xEF,IDX.LDW,IDX.FN_OFS8_IDX_R,IDX.Y,IDX.X
;form op (off16,r),r
.byte 0xD7,IDX.LD,IDX.FN_OFS16_IDX_R,IDX.Y,IDX.A
.byte 0xDF,IDX.LDW,IDX.FN_OFS16_IDX_R,IDX.Y,IDX.X
; form op r,(ofs16,r)
.byte 0xD0,IDX.SUB,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xD1,IDX.CP,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xD2,IDX.SBC,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xD3,IDX.CPW,IDX.FN_R_OFS16_IDX,IDX.X,IDX.Y
.byte 0xD4,IDX.AND,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xD5,IDX.BCP,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xD6,IDX.LD,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xD8,IDX.XOR,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xD9,IDX.ADC,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xDA,IDX.OR,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xDB,IDX.ADD,IDX.FN_R_OFS16_IDX,IDX.A,IDX.Y
.byte 0xDE,IDX.LDW,IDX.FN_R_OFS16_IDX,IDX.Y,IDX.Y
;form op (ofs16,r)
.byte 0xDC,IDX.JP,IDX.FN_OFS16_IDX,IDX.Y,0
.byte 0xDD,IDX.CALL,IDX.FN_OFS16_IDX,IDX.Y,0
; form op r,(ofs24,r)
.byte 0xAF,IDX.LDF,IDX.FN_R_OFS24_IDX,IDX.A,IDX.Y
; form op (ofs24,r),r
.byte 0xA7,IDX.LDF,IDX.FN_OFS24_IDX_R,IDX.Y,IDX.A
;form op adr16,r
.byte 0xCF,IDX.LDW,IDX.FN_ADR16_R,0,IDX.Y
.byte 0,0,0,0,0
; table for opcodes with 0x91 prefix
p91_codes:
;form op r,([ptr8],r)
.byte 0xD0,IDX.SUB,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xD1,IDX.CP,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xD2,IDX.SBC,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xD3,IDX.CPW,IDX.FN_R_PTR8_IDX,IDX.X,IDX.Y
.byte 0xD4,IDX.AND,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xD5,IDX.BCP,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xD6,IDX.LD,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xD8,IDX.XOR,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xD9,IDX.ADC,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xDA,IDX.OR,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xDB,IDX.ADD,IDX.FN_R_PTR8_IDX,IDX.A,IDX.Y
.byte 0xDE,IDX.LDW,IDX.FN_R_PTR8_IDX,IDX.Y,IDX.Y
;form op ([ptr8,r]),r
.byte 0xd7,IDX.LD,IDX.FN_PTR8_IDX_R,IDX.Y,IDX.A
; form op r,([ptr16],r)
.byte 0xAF,IDX.LDF,IDX.FN_R_PTR16_IDX,IDX.A,IDX.Y
; form op ([ptr16],r),r
.byte 0xA7,IDX.LDF,IDX.FN_PTR16_IDX_R,IDX.Y,IDX.A
;form op r,[ptr8]
.byte 0xCE,IDX.LDW,IDX.FN_R_PTR8,IDX.Y,0
;form op [ptr8],r
.byte 0xCF,IDX.LDW,IDX.FN_PTR8_R,0,IDX.Y
;form op ([ptr8,r]),r
.byte 0XDF,IDX.LDW,IDX.FN_PTR8_IDX_R,IDX.Y,IDX.X
;form op ([ptr8],r)
.byte 0x60,IDX.NEG,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x63,IDX.CPL,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x64,IDX.SRL,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x66,IDX.RRC,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x67,IDX.SRA,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x68,IDX.SLL,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x69,IDX.RLC,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x6A,IDX.DEC,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x6C,IDX.INC,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x6D,IDX.TNZ,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x6E,IDX.SWAP,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0x6F,IDX.CLR,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0xDC,IDX.JP,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0xDD,IDX.CALL,IDX.FN_PTR8_IDX,IDX.Y,0
.byte 0,0,0,0,0
; table of indexes for opcodes with 0x92 prefix
p92_codes:
;form op r,[ptr8]
.byte 0xC0,IDX.SUB,IDX.FN_R_PTR8,IDX.A,0
.byte 0xC1,IDX.CP,IDX.FN_R_PTR8,IDX.A,0
.byte 0xC2,IDX.SBC,IDX.FN_R_PTR8,IDX.A,0
.byte 0xC3,IDX.CPW,IDX.FN_R_PTR8,IDX.X,0
.byte 0xC4,IDX.AND,IDX.FN_R_PTR8,IDX.A,0
.byte 0xC5,IDX.BCP,IDX.FN_R_PTR8,IDX.A,0
.byte 0xC6,IDX.LD,IDX.FN_R_PTR8,IDX.A,0
.byte 0xC8,IDX.XOR,IDX.FN_R_PTR8,IDX.A,0
.byte 0xc9,IDX.ADC,IDX.FN_R_PTR8,IDX.A,0
.byte 0xCA,IDX.OR,IDX.FN_R_PTR8,IDX.A,0
.byte 0xCB,IDX.ADD,IDX.FN_R_PTR8,IDX.A,0
.byte 0xCE,IDX.LDW,IDX.FN_R_PTR8,IDX.A,0
;form op r,([ptr8,],r)
.byte 0xD0,IDX.SUB,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xD1,IDX.CP,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xD2,IDX.SBC,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xD3,IDX.CPW,IDX.FN_R_PTR8_IDX,IDX.Y,IDX.X
.byte 0xD4,IDX.AND,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xD5,IDX.BCP,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xD6,IDX.LD,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xD8,IDX.XOR,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xD9,IDX.ADC,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xDA,IDX.OR,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xDB,IDX.ADD,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
.byte 0xDE,IDX.LDW,IDX.FN_R_PTR8_IDX,IDX.A,IDX.X
;form op [ptr8],r
.byte 0xC7,IDX.LD,IDX.FN_PTR8_R,0,IDX.A
.byte 0xCF,IDX.LDW,IDX.FN_PTR8_R,0,IDX.X
;form op ([ptr8],r),r
.byte 0xD7,IDX.LD,IDX.FN_PTR8_IDX_R,IDX.X,IDX.A
.byte 0xDF,IDX.LDW,IDX.FN_PTR8_IDX_R,IDX.X,IDX.Y
; form op r,([ptr16],r)
.byte 0xAF,IDX.LDF,IDX.FN_R_PTR16_IDX,IDX.A,IDX.X
; form op ([ptr16],r),r
.byte 0xA7,IDX.LDF,IDX.FN_PTR16_IDX_R,IDX.X,IDX.A
; form op r,[ptr16]
.byte 0xBC,IDX.LDF,IDX.FN_R_PTR16,IDX.A,0
; form op [ptr16],r
.byte 0xBD,IDX.LDF,IDX.FN_PTR16_R,0,IDX.A
; form op [ptr16]
.byte 0x8D,IDX.CALLF,IDX.FN_PTR16,0,0
.byte 0xAC,IDX.JPF,IDX.FN_PTR16,0,0
; form op [ptr8] 0x3n
.byte 0x30,IDX.NEG,IDX.FN_PTR8,0,0
.byte 0x33,IDX.CPL,IDX.FN_PTR8,0,0
.byte 0x34,IDX.SRL,IDX.FN_PTR8,0,0
.byte 0x36,IDX.RRC,IDX.FN_PTR8,0,0
.byte 0x37,IDX.SRA,IDX.FN_PTR8,0,0
.byte 0x38,IDX.SLL,IDX.FN_PTR8,0,0
.byte 0x39,IDX.RLC,IDX.FN_PTR8,0,0
.byte 0x3A,IDX.DEC,IDX.FN_PTR8,0,0
.byte 0x3C,IDX.INC,IDX.FN_PTR8,0,0
.byte 0x3D,IDX.TNZ,IDX.FN_PTR8,0,0
.byte 0x3E,IDX.SWAP,IDX.FN_PTR8,0,0
.byte 0x3F,IDX.CLR,IDX.FN_PTR8,0,0
; form op ([ptr8],r) 0x6n 0xDC 0xDD
.byte 0x60,IDX.NEG,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x63,IDX.CPL,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x64,IDX.SRL,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x66,IDX.RRC,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x67,IDX.SRA,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x68,IDX.SLL,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x69,IDX.RLC,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x6A,IDX.DEC,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x6C,IDX.INC,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x6D,IDX.TNZ,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x6E,IDX.SWAP,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0x6F,IDX.CLR,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0xED,IDX.CALL,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0xDC,IDX.JP,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0xDD,IDX.CALL,IDX.FN_PTR8_IDX,IDX.X,0
.byte 0,0,0,0,0
;*****************************************************
;-----------------------------------
; disassembler main function
;-----------------------------------
;local constants
PAGE_CNT = 24 ; instructions per page
;local variables
INST_CNTR= 1 ;
VSIZE = 1
stm8_dasm::
pushw X
pushw y
_vars VSIZE
_clrz farptr
_ldxz XAMADR
_strxz ptr16
page_loop:
ld a,#PAGE_CNT
ld (INST_CNTR,sp),a
instr_loop:
; print address
ld a,#CR
call uart_putc
_ldxz ptr16
call PRINT_ADDR
ld a,#TAB
call uart_putc
call decode
; here X = decoded byte count
addw x,ptr16
_strxz ptr16
dec (INST_CNTR,sp)
jrne instr_loop
; pause wait spacebar for next page or other to leave
call uart_getc
cp a,#SPACE
jreq page_loop
jra dasm_exit
dasm_miss_arg:
call error_print
dasm_exit:
popw y
popw x
_drop VSIZE
ret
;------------------------------------------
;instruction decoder
; print instruction mnemonic and arguments
; input:
; ptr16 address next instruction
; output:
; X decoded byte count
;--------------------------------------------
; local variables
PREFIX = 1 ; opcode prefix
OPCODE = 2 ; operating code
VSIZE=2 ;
decode:
_vars VSIZE
clrw x
call get_int8
ld (OPCODE,sp),a
call is_prefix
ld (PREFIX,sp),a
cp a,#0
jrne 0$
; no prefix
ld a,#0xf0
and a,(OPCODE,sp)
cp a,#0x20
jrne 10$
ld a,(OPCODE,sp)
and a,#0xf
call fn_rel8
jp decode_exit
10$:
ldw y,#codes
jra 6$
; get opcode
0$: call get_int8
ld (OPCODE,sp),a
ld a,(PREFIX,sp)
1$: cp a,#0x72
jrne 2$
ld a,(OPCODE,sp)
and a,#0xf0
jrne 11$
ld a,(OPCODE,sp)
and a,#0xf
call fn_adr16_b_rel
jp decode_exit
11$:
cp a,#0x10
jrne 12$
ld a,(OPCODE,sp)
and a,#0xf
call fn_adr16_bit
jp decode_exit
12$:
ldw y,#p72_codes
jra 6$
2$: cp a,#0x90
jrne 3$
ld a,(OPCODE,sp)
and a,#0xf0
cp a,#0x10
jrne 21$
ld a,(OPCODE,sp)
call fn_adr16_bit
jp decode_exit
21$:
cp a,#0x20
jrne 22$
ld a,(OPCODE,sp)
call fn_rel8
jra decode_exit
22$:
ldw y,#p90_codes
jra 6$
3$: cp a,#0x91
jrne 4$
ldw y,#p91_codes
jra 6$
4$: ldw y,#p92_codes
6$: ld a,(OPCODE,sp)
callr search_code
btjf dasm_flags,#F_FOUND,invalid_opcode
pushw y
ld a,(FIELD_FN,y)
ldw y,#fn_index
call ld_table_entry
call (y)
popw y
jra decode_exit
invalid_opcode:
ldw y, #bad_opcode
pushw y
call fn_implied
popw y
decode_exit:
_drop VSIZE
ret
bad_opcode: .byte 0,IDX.QM,IDX.FN_IMPL,0,0
;---------------------------
; search code in table
; input:
; Y pointer to table