892 lines
25 KiB
Plaintext
892 lines
25 KiB
Plaintext
/* ARM assembly Raspberry PI */
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/* program 2048.s */
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/* REMARK 1 : this program use routines in a include file
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see task Include a file language arm assembly
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for the routine affichageMess conversion10
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see at end of this program the instruction include */
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/* for constantes see task include a file in arm assembly */
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/************************************/
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/* Constantes */
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/************************************/
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.include "../constantes.inc"
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.equ STDIN, 0 @ Linux input console
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.equ READ, 3 @ Linux syscall
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.equ SIZE, 4
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.equ TOTAL, 2048
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.equ BUFFERSIZE, 80
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.equ IOCTL, 0x36 @ Linux syscall
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.equ SIGACTION, 0x43 @ Linux syscall
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.equ SYSPOLL, 0xA8 @ Linux syscall
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.equ TCGETS, 0x5401
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.equ TCSETS, 0x5402
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.equ ICANON, 2
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.equ ECHO, 10
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.equ POLLIN, 1
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.equ SIGINT, 2 @ Issued if the user sends an interrupt signal (Ctrl + C)
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.equ SIGQUIT, 3 @ Issued if the user sends a quit signal (Ctrl + D)
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.equ SIGTERM, 15 @ Software termination signal (sent by kill by default)
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.equ SIGTTOU, 22
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/*******************************************/
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/* Structures */
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/********************************************/
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/* structure termios see doc linux*/
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.struct 0
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term_c_iflag: @ input modes
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.struct term_c_iflag + 4
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term_c_oflag: @ output modes
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.struct term_c_oflag + 4
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term_c_cflag: @ control modes
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.struct term_c_cflag + 4
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term_c_lflag: @ local modes
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.struct term_c_lflag + 4
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term_c_cc: @ special characters
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.struct term_c_cc + 20 @ see length if necessary
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term_fin:
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/* structure sigaction see doc linux */
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.struct 0
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sa_handler:
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.struct sa_handler + 4
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sa_mask:
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.struct sa_mask + 4
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sa_flags:
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.struct sa_flags + 4
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sa_sigaction:
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.struct sa_sigaction + 4
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sa_fin:
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/* structure poll see doc linux */
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.struct 0
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poll_fd: @ File Descriptor
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.struct poll_fd + 4
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poll_events: @ events mask
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.struct poll_events + 4
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poll_revents: @ events returned
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.struct poll_revents + 4
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poll_fin:
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/*********************************/
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/* Initialized data */
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/*********************************/
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.data
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szMessOK: .asciz "Bravo !! You win. \n"
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szMessNotOK: .asciz "You lost !! \n"
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szMessNewGame: .asciz "New game (y/n) ? \n"
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szMessErreur: .asciz "Error detected.\n"
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szCarriageReturn: .asciz "\n"
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//szMessMovePos: .asciz "\033[00;00H"
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szMess0: .asciz " "
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szMess2: .asciz " 2 "
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szMess4: .asciz " 4 "
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szMess8: .asciz " 8 "
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szMess16: .asciz " 16 "
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szMess32: .asciz " 32 "
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szMess64: .asciz " 64 "
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szMess128: .asciz " 128 "
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szMess256: .asciz " 256 "
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szMess512: .asciz " 512 "
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szMess1024: .asciz " 1024 "
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szMess2048: .asciz " 2048 "
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szClear1: .byte 0x1B
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.byte 'c' @ other console clear
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.byte 0
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szLineH: .asciz "-----------------------------\n"
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szLineV: .asciz "|"
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szLineVT: .asciz "| | | | |\n"
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.align 4
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iGraine: .int 123456
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/*********************************/
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/* UnInitialized data */
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/*********************************/
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.bss
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.align 4
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sZoneConv: .skip 24
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sBuffer: .skip BUFFERSIZE
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iTbCase: .skip 4 * SIZE * SIZE
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iEnd: .skip 4 @ 0 loop 1 = end loop
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iTouche: .skip 4 @ value key pressed
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stOldtio: .skip term_fin @ old terminal state
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stCurtio: .skip term_fin @ current terminal state
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stSigAction: .skip sa_fin @ area signal structure
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stSigAction1: .skip sa_fin
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stPoll1: .skip poll_fin @ area poll structure
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stPoll2: .skip poll_fin
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/*********************************/
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/* code section */
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/*********************************/
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.text
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.global main
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main: @ entry of program
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1: @ begin game loop
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ldr r0,iAdrszClear1
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bl affichageMess
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bl razTable
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2:
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bl addDigit
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cmp r0,#-1
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beq 5f @ end game
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bl displayGame
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3:
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bl readKey
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cmp r0,#-1
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beq 100f @ error or control-c
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bl keyMove
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cmp r0,#0
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beq 3b @ no change -> loop
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cmp r0,#2 @ last addition = 2048 ?
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beq 4f
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cmp r0,#-1 @ quit ?
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bne 2b @ loop
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b 10f
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4: @ last addition = 2048
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ldr r0,iAdrszMessOK
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bl affichageMess
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b 10f
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5: @ display message no solution
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ldr r0,iAdrszMessNotOK
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bl affichageMess
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10: @ display new game ?
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ldr r0,iAdrszCarriageReturn
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bl affichageMess
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ldr r0,iAdrszMessNewGame
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bl affichageMess
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bl readKey
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ldr r0,iAdriTouche
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ldrb r0,[r0]
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cmp r0,#'y'
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beq 1b
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cmp r0,#'Y'
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beq 1b
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100: @ standard end of the program
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mov r0, #0 @ return code
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mov r7, #EXIT @ request to exit program
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svc #0 @ perform the system call
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iAdrszCarriageReturn: .int szCarriageReturn
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iAdrszMessNotOK: .int szMessNotOK
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iAdrszMessOK: .int szMessOK
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iAdrszMessNewGame: .int szMessNewGame
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iAdrsZoneConv: .int sZoneConv
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iAdrszClear1: .int szClear1
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/******************************************************************/
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/* raz table cases */
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/******************************************************************/
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razTable:
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push {r0-r2,lr} @ save registers
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ldr r1,iAdriTbCase
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mov r0,#0
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mov r2,#0
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1:
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str r0,[r1,r2,lsl #2]
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add r2,r2,#1
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cmp r2,#SIZE * SIZE
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blt 1b
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100:
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pop {r0-r2,lr} @ restaur registers
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bx lr @return
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/******************************************************************/
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/* key move */
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/******************************************************************/
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/* r0 contains key value */
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keyMove:
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push {r1,lr} @ save registers
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cmp r0,#0x42 @ down arrow
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bne 1f
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bl moveDown
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b 100f
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1:
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cmp r0,#0x41 @ high arrow
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bne 2f
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bl moveUp
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b 100f
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2:
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cmp r0,#0x43 @ right arrow
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bne 3f
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bl moveRight
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b 100f
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3:
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cmp r0,#0x44 @ left arrow
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bne 4f
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bl moveLeft
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b 100f
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4:
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ldr r0,iAdriTouche
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ldrb r0,[r0]
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cmp r0,#'q' @ quit game
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bne 5f
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mov r0,#-1
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b 100f
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5:
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cmp r0,#'Q' @ quit game
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bne 100f
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mov r0,#-1
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b 100f
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100:
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pop {r1,lr} @ restaur registers
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bx lr @return
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/******************************************************************/
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/* move left */
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/******************************************************************/
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/* r0 return -1 if ok */
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moveLeft:
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push {r1-r10,lr} @ save registers
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ldr r1,iAdriTbCase
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mov r0,#0 @ top move Ok
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mov r2,#0 @ line indice
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1:
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mov r6,#0 @ counter empty case
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mov r7,#0 @ first digit
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mov r10,#0 @ last digit to add
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mov r3,#0 @ column indice
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2:
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lsl r5,r2,#2 @ change this if size <> 4
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add r5,r5,r3 @ compute table indice
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ldr r4,[r1,r5,lsl #2]
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cmp r4,#0
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addeq r6,r6,#1 @ positions vides
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beq 5f
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cmp r6,#0
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beq 3f @ no empty left case
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mov r8,#0
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str r8,[r1,r5,lsl #2] @ raz digit
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sub r5,r5,r6
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str r4,[r1,r5,lsl #2] @ and store to left empty position
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mov r0,#1 @ move Ok
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//sub r6,r6,#1
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3:
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cmp r7,#0 @ first digit
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beq 4f
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cmp r10,r4 @ prec digit have to add
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beq 4f
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sub r8,r5,#1 @ prec digit
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ldr r9,[r1,r8,lsl #2]
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cmp r4,r9 @ equal ?
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bne 4f
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mov r10,r4 @ save digit
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add r4,r4,r9 @ yes -> add
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str r4,[r1,r8,lsl #2]
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cmp r4,#TOTAL
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moveq r0,#2
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beq 100f
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mov r4,#0
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str r4,[r1,r5,lsl #2]
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add r6,r6,#1 @ empty case + 1
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mov r0,#1 @ move Ok
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4:
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add r7,r7,#1 @ no first digit
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5: @ and loop
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add r3,r3,#1
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cmp r3,#SIZE
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blt 2b
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add r2,r2,#1
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cmp r2,#SIZE
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blt 1b
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100:
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pop {r1-r12,lr}
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bx lr @ return
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/******************************************************************/
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/* move right */
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/******************************************************************/
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/* r0 return -1 if ok */
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moveRight:
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push {r1-r5,lr} @ save registers
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ldr r1,iAdriTbCase
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mov r0,#0
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mov r2,#0
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1:
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mov r6,#0
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mov r7,#0
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mov r10,#0
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mov r3,#SIZE-1
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2:
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lsl r5,r2,#2 @ change this if size <> 4
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add r5,r5,r3
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ldr r4,[r1,r5,lsl #2]
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cmp r4,#0
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addeq r6,r6,#1 @ positions vides
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beq 5f
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cmp r6,#0
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beq 3f @ no empty right case
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mov r0,#0
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str r0,[r1,r5,lsl #2] @ raz digit
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add r5,r5,r6
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str r4,[r1,r5,lsl #2] @ and store to right empty position
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mov r0,#1
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3:
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cmp r7,#0 @ first digit
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beq 4f
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add r8,r5,#1 @ next digit
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ldr r9,[r1,r8,lsl #2]
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cmp r4,r9 @ equal ?
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bne 4f
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cmp r10,r4
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beq 4f
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mov r10,r4
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add r4,r4,r9 @ yes -> add
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str r4,[r1,r8,lsl #2]
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cmp r4,#TOTAL
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moveq r0,#2
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beq 100f
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mov r4,#0
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str r4,[r1,r5,lsl #2]
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add r6,r6,#1 @ empty case + 1
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mov r0,#1
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4:
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add r7,r7,#1 @ no first digit
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5: @ and loop
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sub r3,r3,#1
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cmp r3,#0
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bge 2b
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add r2,r2,#1
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cmp r2,#SIZE
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blt 1b
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100:
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pop {r1-r5,lr}
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bx lr @ return
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/******************************************************************/
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/* move down */
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/******************************************************************/
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/* r0 return -1 if ok */
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moveDown:
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push {r1-r5,lr} @ save registers
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ldr r1,iAdriTbCase
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mov r0,#0
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mov r3,#0
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1:
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mov r6,#0
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mov r7,#0
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mov r10,#0
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mov r2,#SIZE-1
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2:
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lsl r5,r2,#2 @ change this if size <> 4
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add r5,r5,r3
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ldr r4,[r1,r5,lsl #2]
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cmp r4,#0
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addeq r6,r6,#1 @ positions vides
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beq 5f
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cmp r6,#0
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beq 3f @ no empty right case
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mov r0,#0
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str r0,[r1,r5,lsl #2] @ raz digit
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lsl r0,r6,#2
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add r5,r5,r0
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str r4,[r1,r5,lsl #2] @ and store to right empty position
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mov r0,#1
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3:
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cmp r7,#0 @ first digit
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beq 4f
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add r8,r5,#SIZE @ down digit
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ldr r9,[r1,r8,lsl #2]
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cmp r4,r9 @ equal ?
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bne 4f
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cmp r10,r4
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beq 4f
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mov r10,r4
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add r4,r4,r9 @ yes -> add
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str r4,[r1,r8,lsl #2]
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cmp r4,#TOTAL
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moveq r0,#2
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beq 100f
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mov r4,#0
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str r4,[r1,r5,lsl #2]
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add r6,r6,#1 @ empty case + 1
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mov r0,#1
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4:
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add r7,r7,#1 @ no first digit
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5: @ and loop
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sub r2,r2,#1
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cmp r2,#0
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bge 2b
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add r3,r3,#1
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cmp r3,#SIZE
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blt 1b
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100:
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pop {r1-r5,lr}
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bx lr @ return
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/******************************************************************/
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/* move up */
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/******************************************************************/
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/* r0 return -1 if ok */
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moveUp:
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push {r1-r5,lr} @ save registers
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ldr r1,iAdriTbCase
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mov r0,#0
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mov r3,#0
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1:
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mov r6,#0
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mov r7,#0
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mov r10,#0
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mov r2,#0
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2:
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lsl r5,r2,#2 @ change this if size <> 4
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add r5,r5,r3
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ldr r4,[r1,r5,lsl #2]
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cmp r4,#0
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addeq r6,r6,#1 @ positions vides
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beq 5f
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cmp r6,#0
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beq 3f @ no empty right case
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mov r0,#0
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str r0,[r1,r5,lsl #2] @ raz digit
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lsl r0,r6,#2
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sub r5,r5,r0
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str r4,[r1,r5,lsl #2] @ and store to right empty position
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mov r0,#1
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3:
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cmp r7,#0 @ first digit
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beq 4f
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sub r8,r5,#SIZE @ up digit
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ldr r9,[r1,r8,lsl #2]
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cmp r4,r9 @ equal ?
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bne 4f
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cmp r10,r4
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beq 4f
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mov r10,r4
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add r4,r4,r9 @ yes -> add
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str r4,[r1,r8,lsl #2]
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cmp r4,#TOTAL
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moveq r0,#2
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beq 100f
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mov r4,#0
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str r4,[r1,r5,lsl #2]
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add r6,r6,#1 @ empty case + 1
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mov r0,#1
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4:
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add r7,r7,#1 @ no first digit
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5: @ and loop
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add r2,r2,#1
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cmp r2,#SIZE
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blt 2b
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add r3,r3,#1
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cmp r3,#SIZE
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blt 1b
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100:
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pop {r1-r5,lr}
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bx lr @ return
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/******************************************************************/
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/* add new digit on game */
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/******************************************************************/
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/* r0 return -1 if ok */
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addDigit:
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push {r1-r5,lr} @ save registers
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sub sp,#4 * SIZE*SIZE
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mov fp,sp
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mov r0,#100
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bl genereraleas
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cmp r0,#10
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movlt r5,#4
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movge r5,#2
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ldr r1,iAdriTbCase
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mov r3,#0
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mov r4,#0
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1:
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ldr r2,[r1,r3,lsl #2]
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cmp r2,#0
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bne 2f
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str r3,[fp,r4,lsl #2]
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add r4,r4,#1
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2:
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add r3,r3,#1
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cmp r3,#SIZE*SIZE
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blt 1b
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cmp r4,#0 @ no empty case
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moveq r0,#-1
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beq 100f
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cmp r4,#1
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bne 3f
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ldr r2,[fp] @ one case
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str r5,[r1,r2,lsl #2]
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mov r0,#0
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b 100f
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3: @ multiple case
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sub r0,r4,#1
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bl genereraleas
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ldr r2,[fp,r0,lsl #2]
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str r5,[r1,r2,lsl #2]
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mov r0,#0
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100:
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add sp,#4* (SIZE*SIZE) @ stack alignement
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pop {r1-r5,lr}
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bx lr @ return
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iAdriTbCase: .int iTbCase
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/******************************************************************/
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/* display game */
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/******************************************************************/
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displayGame:
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push {r1-r3,lr} @ save registers
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ldr r0,iAdrszClear1
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bl affichageMess
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ldr r0,iAdrszLineH
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bl affichageMess
|
|
ldr r0,iAdrszLineVT
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineV
|
|
bl affichageMess
|
|
ldr r1,iAdriTbCase
|
|
mov r2,#0
|
|
1:
|
|
ldr r0,[r1,r2,lsl #2]
|
|
bl digitString
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineV
|
|
bl affichageMess
|
|
add r2,r2,#1
|
|
cmp r2,#SIZE
|
|
blt 1b
|
|
ldr r0,iAdrszCarriageReturn
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineVT
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineH
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineVT
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineV
|
|
bl affichageMess
|
|
2:
|
|
ldr r0,[r1,r2,lsl #2]
|
|
bl digitString
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineV
|
|
bl affichageMess
|
|
add r2,r2,#1
|
|
cmp r2,#SIZE*2
|
|
blt 2b
|
|
ldr r0,iAdrszCarriageReturn
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineVT
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineH
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineVT
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineV
|
|
bl affichageMess
|
|
3:
|
|
ldr r0,[r1,r2,lsl #2]
|
|
bl digitString
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineV
|
|
bl affichageMess
|
|
add r2,r2,#1
|
|
cmp r2,#SIZE*3
|
|
blt 3b
|
|
ldr r0,iAdrszCarriageReturn
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineVT
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineH
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineVT
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineV
|
|
bl affichageMess
|
|
4:
|
|
ldr r0,[r1,r2,lsl #2]
|
|
bl digitString
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineV
|
|
bl affichageMess
|
|
add r2,r2,#1
|
|
cmp r2,#SIZE*4
|
|
blt 4b
|
|
ldr r0,iAdrszCarriageReturn
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineVT
|
|
bl affichageMess
|
|
ldr r0,iAdrszLineH
|
|
bl affichageMess
|
|
|
|
100:
|
|
pop {r1-r3,lr}
|
|
bx lr @ return
|
|
iAdrszLineH: .int szLineH
|
|
iAdrszLineV: .int szLineV
|
|
iAdrszLineVT: .int szLineVT
|
|
//iAdrszMessMovePos: .int szMessMovePos
|
|
/******************************************************************/
|
|
/* digits string */
|
|
/******************************************************************/
|
|
/* r0 contains number */
|
|
/* r0 return address string */
|
|
digitString:
|
|
push {r1,lr} @ save registers
|
|
cmp r0,#0
|
|
bne 1f
|
|
ldr r0,iAdrszMess0
|
|
b 100f
|
|
1:
|
|
cmp r0,#2
|
|
bne 2f
|
|
ldr r0,iAdrszMess2
|
|
b 100f
|
|
2:
|
|
cmp r0,#4
|
|
bne 3f
|
|
ldr r0,iAdrszMess4
|
|
b 100f
|
|
3:
|
|
cmp r0,#8
|
|
bne 4f
|
|
ldr r0,iAdrszMess8
|
|
b 100f
|
|
4:
|
|
cmp r0,#16
|
|
bne 5f
|
|
ldr r0,iAdrszMess16
|
|
b 100f
|
|
5:
|
|
cmp r0,#32
|
|
bne 6f
|
|
ldr r0,iAdrszMess32
|
|
b 100f
|
|
6:
|
|
cmp r0,#64
|
|
bne 7f
|
|
ldr r0,iAdrszMess64
|
|
b 100f
|
|
7:
|
|
cmp r0,#128
|
|
bne 8f
|
|
ldr r0,iAdrszMess128
|
|
b 100f
|
|
8:
|
|
cmp r0,#256
|
|
bne 9f
|
|
ldr r0,iAdrszMess256
|
|
b 100f
|
|
9:
|
|
cmp r0,#512
|
|
bne 10f
|
|
ldr r0,iAdrszMess512
|
|
b 100f
|
|
10:
|
|
cmp r0,#1024
|
|
bne 11f
|
|
ldr r0,iAdrszMess1024
|
|
b 100f
|
|
11:
|
|
cmp r0,#2048
|
|
bne 12f
|
|
ldr r0,iAdrszMess2048
|
|
b 100f
|
|
12:
|
|
ldr r1,iAdrszMessErreur @ error message
|
|
bl displayError
|
|
100:
|
|
pop {r1,lr}
|
|
bx lr @ return
|
|
iAdrszMess0: .int szMess0
|
|
iAdrszMess2: .int szMess2
|
|
iAdrszMess4: .int szMess4
|
|
iAdrszMess8: .int szMess8
|
|
iAdrszMess16: .int szMess16
|
|
iAdrszMess32: .int szMess32
|
|
iAdrszMess64: .int szMess64
|
|
iAdrszMess128: .int szMess128
|
|
iAdrszMess256: .int szMess256
|
|
iAdrszMess512: .int szMess512
|
|
iAdrszMess1024: .int szMess1024
|
|
iAdrszMess2048: .int szMess2048
|
|
|
|
//iAdrsBuffer: .int sBuffer
|
|
/***************************************************/
|
|
/* Generation random number */
|
|
/***************************************************/
|
|
/* r0 contains limit */
|
|
genereraleas:
|
|
push {r1-r4,lr} @ save registers
|
|
ldr r4,iAdriGraine
|
|
ldr r2,[r4]
|
|
ldr r3,iNbDep1
|
|
mul r2,r3,r2
|
|
ldr r3,iNbDep2
|
|
add r2,r2,r3
|
|
str r2,[r4] @ maj de la graine pour l appel suivant
|
|
cmp r0,#0
|
|
beq 100f
|
|
add r1,r0,#1 @ divisor
|
|
mov r0,r2 @ dividende
|
|
bl division
|
|
mov r0,r3 @ résult = remainder
|
|
|
|
100: @ end function
|
|
pop {r1-r4,lr} @ restaur registers
|
|
bx lr @ return
|
|
/*****************************************************/
|
|
iAdriGraine: .int iGraine
|
|
iNbDep1: .int 0x343FD
|
|
iNbDep2: .int 0x269EC3
|
|
/***************************************************/
|
|
/* read touch */
|
|
/***************************************************/
|
|
readKey:
|
|
push {r1-r7,lr}
|
|
mov r5,#0
|
|
ldr r1,iAdriTouche @ buffer address
|
|
str r5,[r1] @ raz 4 bytes iTouche
|
|
/* read terminal state */
|
|
mov r0,#STDIN @ input console
|
|
mov r1,#TCGETS
|
|
ldr r2,iAdrstOldtio
|
|
mov r7, #IOCTL @ call system Linux
|
|
svc #0
|
|
cmp r0,#0 @ error ?
|
|
beq 1f
|
|
ldr r1,iAdrszMessErreur @ error message
|
|
bl displayError
|
|
mov r0,#-1
|
|
b 100f
|
|
1:
|
|
adr r0,sighandler @ adresse routine traitement signal
|
|
ldr r1,iAdrstSigAction @ adresse structure sigaction
|
|
str r0,[r1,#sa_handler] @ maj handler
|
|
mov r0,#SIGINT @ signal type
|
|
ldr r1,iAdrstSigAction
|
|
mov r2,#0 @ NULL
|
|
mov r7, #SIGACTION @ call system
|
|
svc #0
|
|
cmp r0,#0 @ error ?
|
|
bne 97f
|
|
mov r0,#SIGQUIT
|
|
ldr r1,iAdrstSigAction
|
|
mov r2,#0 @ NULL
|
|
mov r7, #SIGACTION @ call system
|
|
svc #0
|
|
cmp r0,#0 @ error ?
|
|
bne 97f
|
|
mov r0,#SIGTERM
|
|
ldr r1,iAdrstSigAction
|
|
mov r2,#0 @ NULL
|
|
mov r7, #SIGACTION @ appel systeme
|
|
svc #0
|
|
cmp r0,#0
|
|
bne 97f
|
|
@
|
|
adr r0,iSIG_IGN @ address signal ignore function
|
|
ldr r1,iAdrstSigAction1
|
|
str r0,[r1,#sa_handler]
|
|
mov r0,#SIGTTOU @invalidate other process signal
|
|
ldr r1,iAdrstSigAction1
|
|
mov r2,#0 @ NULL
|
|
mov r7,#SIGACTION @ call system
|
|
svc #0
|
|
cmp r0,#0
|
|
bne 97f
|
|
@
|
|
/* read terminal current state */
|
|
mov r0,#STDIN
|
|
mov r1,#TCGETS
|
|
ldr r2,iAdrstCurtio @ address current termio
|
|
mov r7,#IOCTL @ call systeme
|
|
svc #0
|
|
cmp r0,#0 @ error ?
|
|
bne 97f
|
|
mov r2,#ICANON | ECHO @ no key pressed echo on display
|
|
mvn r2,r2 @ and one key
|
|
ldr r1,iAdrstCurtio
|
|
ldr r3,[r1,#term_c_lflag]
|
|
and r3,r2 @ add flags
|
|
str r3,[r1,#term_c_lflag] @ and store
|
|
mov r0,#STDIN @ maj terminal current state
|
|
mov r1,#TCSETS
|
|
ldr r2,iAdrstCurtio
|
|
mov r7, #IOCTL @ call system
|
|
svc #0
|
|
cmp r0,#0
|
|
bne 97f
|
|
@
|
|
2: @ loop waiting key
|
|
ldr r0,iAdriEnd @ if signal ctrl-c -> end
|
|
ldr r0,[r0]
|
|
cmp r0,#0
|
|
movne r5,#-1
|
|
bne 98f
|
|
ldr r0,iAdrstPoll1 @ address structure poll
|
|
mov r1,#STDIN
|
|
str r1,[r0,#poll_fd] @ maj FD
|
|
mov r1,#POLLIN @ action code
|
|
str r1,[r0,#poll_events]
|
|
mov r1,#1 @ items number structure poll
|
|
mov r2,#0 @ timeout = 0
|
|
mov r7,#SYSPOLL @ call system POLL
|
|
svc #0
|
|
cmp r0,#0 @ key pressed ?
|
|
ble 2b @ no key pressed -> loop
|
|
@ read key
|
|
mov r0,#STDIN @ File Descriptor
|
|
ldr r1,iAdriTouche @ buffer address
|
|
mov r2,#BUFFERSIZE @ buffer size
|
|
mov r7,#READ @ read key
|
|
svc #0
|
|
cmp r0,#0 @ error ?
|
|
bgt 98f
|
|
|
|
97: @ error detected
|
|
ldr r1,iAdrszMessErreur @ error message
|
|
bl displayError
|
|
mov r5,#-1
|
|
98: @ end then restaur begin state terminal
|
|
mov r0,#STDIN
|
|
mov r1,#TCSETS
|
|
ldr r2,iAdrstOldtio
|
|
mov r7,#IOCTL @ call system
|
|
svc #0
|
|
cmp r0,#0
|
|
beq 99f @ restaur ok
|
|
ldr r1,iAdrszMessErreur @ error message
|
|
bl displayError
|
|
mov r0,#-1
|
|
b 100f
|
|
99:
|
|
cmp r5,#0 @ no error or control-c ?
|
|
ldreq r2,iAdriTouche @ key address
|
|
ldreqb r0,[r2,#2] @ return key byte
|
|
movne r0,r5 @ or error
|
|
100:
|
|
pop {r1-r7, lr}
|
|
bx lr
|
|
iSIG_IGN: .int 1
|
|
iAdriEnd: .int iEnd
|
|
iAdrstPoll1: .int stPoll1
|
|
iAdriTouche: .int iTouche
|
|
iAdrstOldtio: .int stOldtio
|
|
iAdrstCurtio: .int stCurtio
|
|
iAdrstSigAction: .int stSigAction
|
|
iAdrstSigAction1: .int stSigAction1
|
|
iAdrszMessErreur : .int szMessErreur
|
|
/******************************************************************/
|
|
/* traitement du signal */
|
|
/******************************************************************/
|
|
sighandler:
|
|
push {r0,r1}
|
|
ldr r0,iAdriEnd
|
|
mov r1,#1 @ maj zone end
|
|
str r1,[r0]
|
|
pop {r0,r1}
|
|
bx lr
|
|
/***************************************************/
|
|
/* ROUTINES INCLUDE */
|
|
/***************************************************/
|
|
.include "../affichage.inc"
|