2023-02-19 21:42:59 +00:00
|
|
|
; brainfuck_compiler_v1.asm - Brainfuck compiler for the 8086 employing some optimisations
|
|
|
|
;
|
|
|
|
; This file is part of the 9086 project.
|
|
|
|
;
|
|
|
|
; Copyright (c) 2023 Efthymios Kritikos
|
|
|
|
;
|
|
|
|
; This program 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.
|
|
|
|
;
|
|
|
|
; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
2023-02-22 01:28:23 +00:00
|
|
|
mov sp,#STACK
|
2023-02-19 21:42:59 +00:00
|
|
|
mov bx,#bootup_msg
|
|
|
|
mov ah,#0x02
|
|
|
|
bootup_print:
|
|
|
|
mov dl,[bx]
|
|
|
|
int #0x21
|
|
|
|
inc bx
|
|
|
|
cmp dl,#0x0A
|
|
|
|
jne bootup_print
|
|
|
|
|
|
|
|
MOV SI,#prog
|
|
|
|
MOV DI,#output_program
|
|
|
|
;CL: write concat CH: move concat
|
|
|
|
MOV CX,#0
|
|
|
|
JMP COMPILE ; Moving some functions above the main switch to make shot jumps work
|
|
|
|
|
|
|
|
;;;;;;;;; . ;;;;;;;;;
|
|
|
|
WAS_PRINT:
|
|
|
|
CALL FLUSH_MOVES
|
|
|
|
CALL FLUSH_WRITES
|
|
|
|
|
|
|
|
MOV AX,#0x02B4 ; mov $0x2,%ah
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV AX,#0x178A ; mov (%bx),%dl
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV AX,#0x21CD ; int $0x21
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
JMP COMPILE
|
|
|
|
|
|
|
|
;;;;;;;;; ] ;;;;;;;;;
|
|
|
|
WAS_PR:
|
|
|
|
CALL FLUSH_MOVES
|
|
|
|
CALL FLUSH_WRITES
|
|
|
|
|
|
|
|
MOV AX,#0x078a ; mov (%bx),%al
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV AX,#0x003C ; cmp $0x0,%al
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV AX,#0x0574 ; je [after the absolute short jump instruction]
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV AL,#0xb8 ; [opcode only] mov 0x????,%ax
|
|
|
|
STOSB
|
|
|
|
|
|
|
|
POP BX
|
|
|
|
ADD BX,#4
|
|
|
|
MOV [DI],BX
|
|
|
|
INC DI
|
|
|
|
INC DI
|
|
|
|
SUB BX,#4
|
|
|
|
|
|
|
|
MOV AX,#0xE0FF ; jmp *%ax
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV [BX],DI
|
|
|
|
|
|
|
|
JMP COMPILE
|
|
|
|
|
|
|
|
;;;;;;;;;;; ACTUAL START ;;;;;;;;;;;;;;;
|
|
|
|
COMPILE:
|
|
|
|
MOV AL,[SI]
|
|
|
|
INC SI
|
|
|
|
CMP AL,#'+
|
|
|
|
JZ WAS_PLUS
|
|
|
|
CMP AL,#'-
|
|
|
|
JZ WAS_MINUS
|
|
|
|
CMP AL,#'>
|
|
|
|
JZ WAS_MR
|
|
|
|
CMP AL,#'<
|
|
|
|
JZ WAS_ML
|
|
|
|
CMP AL,#'[
|
|
|
|
JZ WAS_PL
|
|
|
|
CMP AL,#']
|
|
|
|
JZ WAS_PR
|
|
|
|
CMP AL,#'.
|
|
|
|
JZ WAS_PRINT
|
|
|
|
|
|
|
|
MOV AL,#0xF4 ; hlt
|
|
|
|
MOV [DI],AL
|
|
|
|
MOV BX,#DATA
|
|
|
|
MOV AX,#output_program
|
|
|
|
JMP AX
|
|
|
|
|
|
|
|
;;;;;;;;; + ;;;;;;;;;
|
|
|
|
WAS_PLUS:
|
|
|
|
CALL FLUSH_MOVES
|
|
|
|
INC CL
|
|
|
|
JMP COMPILE
|
|
|
|
|
|
|
|
;;;;;;;;; - ;;;;;;;;;
|
|
|
|
WAS_MINUS:
|
|
|
|
CALL FLUSH_MOVES
|
|
|
|
DEC CL
|
|
|
|
JMP COMPILE
|
|
|
|
|
|
|
|
;;;;;;;;; > ;;;;;;;;;
|
|
|
|
WAS_MR:
|
|
|
|
CALL FLUSH_WRITES
|
|
|
|
INC CH
|
|
|
|
JMP COMPILE
|
|
|
|
|
|
|
|
;;;;;;;;; < ;;;;;;;;;
|
|
|
|
WAS_ML:
|
|
|
|
CALL FLUSH_WRITES
|
|
|
|
DEC CH
|
|
|
|
JMP COMPILE
|
|
|
|
|
|
|
|
;;;;;;;;; [ ;;;;;;;;;
|
|
|
|
WAS_PL:
|
|
|
|
CALL FLUSH_MOVES
|
|
|
|
|
|
|
|
; optimise [-]
|
|
|
|
CMP WORD [SI],#0x5D2D
|
|
|
|
JNZ ACTUAL_LOOP
|
|
|
|
MOV CL,#0
|
|
|
|
INC SI
|
|
|
|
INC SI
|
|
|
|
MOV AX,#0x07C6
|
|
|
|
STOSW
|
|
|
|
MOV AL,#0
|
|
|
|
STOSB
|
|
|
|
JMP COMPILE
|
|
|
|
|
|
|
|
|
|
|
|
ACTUAL_LOOP:
|
|
|
|
CALL FLUSH_WRITES
|
|
|
|
MOV AX,#0x078a ; mov (%bx),%al
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV AX,#0x003c ; cmp $0x0,%al
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV AX,#0x0575 ; jne [after the absolute short jump instruction]
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
MOV AL,#0xb8 ; [opcode only] mov 0x????,%ax
|
|
|
|
STOSB
|
|
|
|
|
|
|
|
PUSH DI
|
|
|
|
|
|
|
|
INC DI
|
|
|
|
INC DI
|
|
|
|
|
|
|
|
MOV AX,#0xe0ff ; jmp *%ax
|
|
|
|
STOSW
|
|
|
|
|
|
|
|
JMP COMPILE
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
FLUSH_WRITES:
|
|
|
|
CMP CL,#0
|
|
|
|
JZ WRITES_FLUSHED
|
|
|
|
CMP CL,#1
|
|
|
|
JZ WRITES_ADD_ONE
|
|
|
|
CMP CL,#0xFF
|
|
|
|
JZ WRITES_DEC_ONE
|
|
|
|
|
|
|
|
;; General case
|
|
|
|
MOV AX,#0x0780 ; add %cl,(%bx)
|
|
|
|
STOSW
|
|
|
|
MOV AL,CL
|
|
|
|
STOSB
|
|
|
|
JMP WRITES_FLUSHED
|
|
|
|
|
|
|
|
WRITES_ADD_ONE:
|
|
|
|
MOV AX,#0x07fe ; incb (%bx)
|
|
|
|
STOSW
|
|
|
|
JMP WRITES_FLUSHED
|
|
|
|
|
|
|
|
WRITES_DEC_ONE:
|
|
|
|
MOV AX,#0x0ffe ; incb (%bx)
|
|
|
|
STOSW
|
|
|
|
JMP WRITES_FLUSHED
|
|
|
|
|
|
|
|
WRITES_FLUSHED:
|
|
|
|
MOV CL,#0
|
|
|
|
RET
|
|
|
|
|
|
|
|
FLUSH_MOVES:
|
|
|
|
CMP CH,#0
|
|
|
|
JZ MOVES_FLUSHED
|
|
|
|
CMP CH,#1
|
|
|
|
JZ MOVES_ONE_RIGHT
|
|
|
|
CMP CH,#0XFF
|
|
|
|
JZ MOVES_ONE_LEFT
|
|
|
|
|
|
|
|
;; General case
|
|
|
|
MOV AX,#0xC381 ; ADD $....,%bx
|
|
|
|
STOSW
|
|
|
|
MOV AL,CH
|
|
|
|
STOSB
|
|
|
|
TEST CH,#0x80
|
|
|
|
jz POSITIVE
|
|
|
|
MOV AL,#0xFF
|
|
|
|
STOSB
|
|
|
|
JMP MOVES_FLUSHED
|
|
|
|
POSITIVE:
|
|
|
|
MOV AL,#0x00
|
|
|
|
STOSB
|
|
|
|
JMP MOVES_FLUSHED
|
|
|
|
|
|
|
|
MOVES_ONE_RIGHT:
|
|
|
|
MOV AL,#0x43 ; inc %bx
|
|
|
|
STOSB
|
|
|
|
JMP MOVES_FLUSHED
|
|
|
|
|
|
|
|
MOVES_ONE_LEFT:
|
|
|
|
MOV AL,#0x4b ; dec %bx
|
|
|
|
STOSB
|
|
|
|
JMP MOVES_FLUSHED
|
|
|
|
|
|
|
|
MOVES_FLUSHED:
|
|
|
|
MOV CH,#0
|
|
|
|
RET
|
|
|
|
|
|
|
|
bootup_msg: .ASCII 'Native brainfuck compiler v1\n'
|
|
|
|
DATA: .BLKB 560
|
2023-02-22 01:28:23 +00:00
|
|
|
.BLKB 200
|
|
|
|
STACK:
|