485 lines
15 KiB
Text
485 lines
15 KiB
Text
/* ARM assembly AARCH64 Raspberry PI 3B */
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/* program game24_64.s */
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/*******************************************/
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/* Constantes file */
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/*******************************************/
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/* for this file see task include a file in language AArch64 assembly*/
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.include "../includeConstantesARM64.inc"
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.equ NBDIGITS, 4 // digits number
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.equ TOTAL, 24
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.equ BUFFERSIZE, 100
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.equ STACKSIZE, 10 // operator and digits number items in stacks
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/*********************************/
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/* Initialized data */
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/*********************************/
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.data
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szMessRules: .ascii "24 Game 64 bits.\n"
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.ascii "The program will display four randomly-generated \n"
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.ascii "single-digit numbers and will then prompt you to enter\n"
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.ascii "an arithmetic expression followed by <enter> to sum \n"
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.ascii "the given numbers to 24.\n"
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.asciz "Exemple : 9+8+3+4 or (7+5)+(3*4) \n\n"
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szMessExpr: .asciz "Enter your expression (or type (q)uit to exit or (n) for other digits): \n"
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szMessDigits: .asciz "The four digits are @ @ @ @ and the score is 24. \n"
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szMessNoDigit: .asciz "Error : One digit is not in digits list !! \n"
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szMessSameDigit: .asciz "Error : Two digits are same !! \n"
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szMessOK: .asciz "It is OK. \n"
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szMessNotOK: .asciz "Error, it is not ok total = @ \n"
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szMessErrOper: .asciz "Unknow Operator (+,-,$,/,(,)) \n"
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szMessNoparen: .asciz "no opening parenthesis !! \n"
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szMessErrParen: .asciz "Error parenthesis number !! \n"
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szMessNoalldigits: .asciz "One or more digits not used !!\n"
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szMessNewGame: .asciz "New game (y/n) ? \n"
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szCarriageReturn: .asciz "\n"
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.align 4
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qGraine: .quad 123456
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/*********************************/
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/* UnInitialized data */
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/*********************************/
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.bss
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sZoneConv: .skip 24
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sBuffer: .skip BUFFERSIZE
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iTabDigit: .skip 8 * NBDIGITS
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iTabTopDigit: .skip 8 * NBDIGITS
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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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ldr x0,qAdrszMessRules // display rules
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bl affichageMess
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1:
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mov x3,#0
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ldr x12,qAdriTabDigit
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ldr x11,qAdriTabTopDigit
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ldr x5,qAdrszMessDigits
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2: // loop generate random digits
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mov x0,#8
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bl genereraleas
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add x0,x0,#1
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str x0,[x12,x3,lsl #3] // store in table
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mov x1,#0
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str x1,[x11,x3,lsl #3] // raz top table
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ldr x1,qAdrsZoneConv
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bl conversion10 // call decimal conversion
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//mov x2,#0
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//strb w2,[x1,x0] // reduce size display area with zéro final
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mov x0,x5
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ldr x1,qAdrsZoneConv // insert conversion in message
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bl strInsertAtCharInc
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mov x5,x0
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add x3,x3,#1
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cmp x3,#NBDIGITS // end ?
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blt 2b // no -> loop
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mov x0,x5
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bl affichageMess
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3: // loop human entry
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ldr x0,qAdrszMessExpr
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bl affichageMess
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bl saisie // entry
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cmp x0,#'q'
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beq 100f
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cmp x0,#'Q'
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beq 100f
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cmp x0,#'n'
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beq 1b
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cmp x0,#'N'
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beq 1b
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bl evalExpr // expression evaluation
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cmp x0,#0 // ok ?
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bne 3b // no - > loop
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10: // display new game ?
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ldr x0,qAdrszCarriageReturn
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bl affichageMess
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ldr x0,qAdrszMessNewGame
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bl affichageMess
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bl saisie
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cmp x0,#'y'
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beq 1b
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cmp x0,#'Y'
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beq 1b
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100: // standard end of the program
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mov x0, #0 // return code
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mov x8, #EXIT // request to exit program
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svc #0 // perform the system call
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qAdrszCarriageReturn: .quad szCarriageReturn
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qAdrszMessRules: .quad szMessRules
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qAdrszMessDigits: .quad szMessDigits
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qAdrszMessExpr: .quad szMessExpr
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qAdrszMessNewGame: .quad szMessNewGame
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qAdrsZoneConv: .quad sZoneConv
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qAdriTabDigit: .quad iTabDigit
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qAdriTabTopDigit: .quad iTabTopDigit
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/******************************************************************/
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/* evaluation expression */
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/******************************************************************/
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/* x0 return 0 if ok -1 else */
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evalExpr:
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stp x1,lr,[sp,-16]! // save registres
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stp x2,x3,[sp,-16]! // save registres
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stp x4,x5,[sp,-16]! // save registres
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stp x6,x7,[sp,-16]! // save registres
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stp x8,x9,[sp,-16]! // save registres
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stp x10,fp,[sp,-16]! // save registres
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mov x0,#0
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ldr x1,qAdriTabTopDigit
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mov x2,#0
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1: // loop init table top digits
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str x0,[x1,x2,lsl #3]
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add x2,x2,#1
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cmp x2,#NBDIGITS
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blt 1b
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sub sp,sp,#STACKSIZE * 8 // stack operator
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mov fp,sp
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sub sp,sp,#STACKSIZE * 8 // stack digit
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mov x1,sp
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ldr x10,qAdrsBuffer
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mov x8,#0 // indice character in buffer
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mov x7,#0 // indice digits stack
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mov x2,#0 // indice operator stack
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mov x9,0
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1: // begin loop
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ldrb w9,[x10,x8]
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cmp x9,#0xA // end expression ?
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beq 90f
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cmp x9,#' ' // space ?
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cinc x8,x8,eq // loop
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beq 1b
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cmp x9,#'(' // left parenthesis -> store in operator stack
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bne 11f
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str x9,[fp,x2,lsl 3]
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add x2,x2,#1
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add x8,x8,#1 // and loop
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b 1b
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11:
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cmp x9,#')' // right parenthesis ?
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bne 3f
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mov x0,fp // compute operator stack until left parenthesis
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sub x2,x2,#1
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2:
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ldr x6,[fp,x2,lsl 3]
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cmp x6,#'(' // left parenthesis
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cinc x8,x8,eq // end ?
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beq 1b // and loop
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sub x7,x7,#1 // last digit
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mov x3,x7
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bl compute
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sub x2,x2,#1
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cmp x2,#0
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bge 2b
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ldr x0,qAdrszMessNoparen // no left parenthesis in stack
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bl affichageMess
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mov x0,#-1
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b 100f
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3:
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cmp x9,#'+' // addition
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beq 4f
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cmp x9,#'-' // soustraction
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beq 4f
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cmp x9,#'*' // multiplication
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beq 4f
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cmp x9,#'/' // division
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beq 4f
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b 5f // not operator
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4: // control priority and depile stacks
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mov x0,fp
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mov x3,x7
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mov x4,x9
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bl depileOper
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mov x7,x3
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add x8,x8,#1
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b 1b // and loop
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5: // digit
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sub x9,x9,#0x30
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mov x0,x9
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bl digitControl
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cmp x0,#0 // error ?
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bne 100f
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str x9,[x1,x7,lsl #3] // store digit in digits stack
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add x7,x7,#1
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add x8,x8,#1
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beq 1b
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b 100f
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90: // compute all stack operators
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mov x0,fp
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sub x7,x7,#1
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91:
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subs x2,x2,#1
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blt 92f
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mov x3,x7
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bl compute
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sub x7,x7,#1
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b 91b
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92:
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ldr x0,[x1] // total = first value on digits stack
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cmp x0,#TOTAL // control total
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beq 93f // ok
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ldr x1,qAdrsZoneConv
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bl conversion10 // call decimal conversion
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mov x2,#0
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strb w2,[x1,x0]
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ldr x0,qAdrszMessNotOK
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ldr x1,qAdrsZoneConv // insert conversion in message
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bl strInsertAtCharInc
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bl affichageMess
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mov x0,#-1
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b 100f
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93: // control use all digits
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ldr x1,qAdriTabTopDigit
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mov x2,#0
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94: // begin loop
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ldr x0,[x1,x2,lsl #3] // load top
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cmp x0,#0
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bne 95f
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ldr x0,qAdrszMessNoalldigits
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bl affichageMess
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mov x0,#-1
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b 100f
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95:
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add x2,x2,#1
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cmp x2,#NBDIGITS
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blt 94b
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96: // display message OK
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ldr x0,qAdrszMessOK
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bl affichageMess
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mov x0,#0
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b 100f
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100:
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add sp,sp,8 * (STACKSIZE *2) // stack algnement
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ldp x10,fp,[sp],16 // restaur des 2 registres
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ldp x8,x9,[sp],16 // restaur des 2 registres
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ldp x6,x7,[sp],16 // restaur des 2 registres
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ldp x4,x5,[sp],16 // restaur des 2 registres
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ldp x2,x3,[sp],16 // restaur des 2 registres
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ldp x1,lr,[sp],16 // restaur des 2 registres
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ret
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qAdrszMessNoparen: .quad szMessNoparen
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qAdrszMessNotOK: .quad szMessNotOK
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qAdrszMessOK: .quad szMessOK
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qAdrszMessNoalldigits: .quad szMessNoalldigits
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/******************************************************************/
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/* depile operator */
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/******************************************************************/
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/* x0 operator stack address */
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/* x1 digits stack address */
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/* x2 operator indice */
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/* x3 digits indice */
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/* x4 operator */
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/* x2 return a new operator indice */
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/* x3 return a new digits indice */
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depileOper:
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stp x4,lr,[sp,-16]! // save registres
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stp x5,x6,[sp,-16]! // save registres
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stp x7,x8,[sp,-16]! // save registres
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cmp x2,#0 // first operator ?
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beq 60f
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sub x5,x2,#1
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1:
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ldr x6,[x0,x5,lsl #3] // load stack operator
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cmp x6,x4 // same operators
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beq 50f
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cmp x6,#'*' // multiplication
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beq 50f
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cmp x6,#'/' // division
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beq 50f
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cmp x6,#'-' // soustraction
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beq 50f
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b 60f
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50: // depile operators stack and compute
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sub x2,x2,#1
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sub x3,x3,#1
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bl compute
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sub x5,x5,#1
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cmp x5,#0
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bge 1b
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60:
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str x4,[x0,x2,lsl #3] // add operator in stack
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add x2,x2,#1
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100:
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ldp x7,x8,[sp],16 // restaur des 2 registres
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ldp x5,x6,[sp],16 // restaur des 2 registres
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ldp x4,lr,[sp],16 // restaur des 2 registres
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ret
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/******************************************************************/
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/* compute */
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/******************************************************************/
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/* x0 operator stack address */
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/* x1 digits stack address */
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/* x2 operator indice */
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/* x3 digits indice */
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compute:
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stp x1,lr,[sp,-16]! // save registres
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stp x2,x3,[sp,-16]! // save registres
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stp x4,x5,[sp,-16]! // save registres
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stp x6,x7,[sp,-16]! // save registres
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stp x8,x9,[sp,-16]! // save registres
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ldr x6,[x1,x3,lsl 3] // load second digit
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sub x5,x3,#1
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ldr x7,[x1,x5,lsl 3] // load first digit
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ldr x8,[x0,x2,lsl 3] // load operator
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cmp x8,#'+'
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bne 1f
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add x7,x7,x6 // addition
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str x7,[x1,x5,lsl 3]
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b 100f
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1:
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cmp x8,#'-'
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bne 2f
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sub x7,x7,x6 // soustaction
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str x7,[x1,x5,lsl 3]
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b 100f
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2:
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cmp x8,#'*'
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bne 3f // multiplication
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mul x7,x6,x7
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str x7,[x1,x5,lsl 3]
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b 100f
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3:
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cmp x8,#'/'
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bne 4f
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udiv x7,x7,x6 // division
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str x7,[x1,x5,lsl 3]
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b 100f
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4:
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cmp x8,#'(' // left parenthesis ?
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bne 5f
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ldr x0,qAdrszMessErrParen // error
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bl affichageMess
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mov x0,#-1
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b 100f
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5:
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ldr x0,qAdrszMessErrOper
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bl affichageMess
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mov x0,#-1
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100:
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ldp x8,x9,[sp],16 // restaur des 2 registres
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ldp x6,x7,[sp],16 // restaur des 2 registres
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ldp x4,x5,[sp],16 // restaur des 2 registres
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ldp x2,x3,[sp],16 // restaur des 2 registres
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ldp x1,lr,[sp],16 // restaur des 2 registres
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ret
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qAdrszMessErrOper: .quad szMessErrOper
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qAdrszMessErrParen: .quad szMessErrParen
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/******************************************************************/
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/* control digits */
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/******************************************************************/
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/* x0 return 0 if OK 1 if not digit */
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digitControl:
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stp x1,lr,[sp,-16]! // save registres
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stp x2,x3,[sp,-16]! // save registres
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stp x4,x5,[sp,-16]! // save registres
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ldr x1,qAdriTabTopDigit
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ldr x2,qAdriTabDigit
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mov x3,#0
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1:
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ldr x4,[x2,x3,lsl #3] // load digit
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cmp x0,x4 // equal ?
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beq 2f // yes
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add x3,x3,#1 // no -> loop
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cmp x3,#NBDIGITS // end ?
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blt 1b
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ldr x0,qAdrszMessNoDigit // error
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bl affichageMess
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mov x0,#1
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b 100f
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2: // control prev use
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ldr x4,[x1,x3,lsl #3]
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cmp x4,#0
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beq 3f
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add x3,x3,#1
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cmp x3,#NBDIGITS
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blt 1b
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ldr x0,qAdrszMessSameDigit
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bl affichageMess
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mov x0,#1
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b 100f
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3:
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mov x4,#1
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str x4,[x1,x3,lsl #3]
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mov x0,#0
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100:
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ldp x4,x5,[sp],16 // restaur des 2 registres
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ldp x2,x3,[sp],16 // restaur des 2 registres
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ldp x1,lr,[sp],16 // restaur des 2 registres
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ret
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qAdrszMessNoDigit: .quad szMessNoDigit
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qAdrszMessSameDigit: .quad szMessSameDigit
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/******************************************************************/
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/* string entry */
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/******************************************************************/
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/* x0 return the first character of human entry */
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saisie:
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stp x1,lr,[sp,-16]! // save registres
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stp x2,x3,[sp,-16]! // save registres
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stp x4,x5,[sp,-16]! // save registres
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stp x6,x7,[sp,-16]! // save registres
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mov x0,STDIN // Linux input console
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ldr x1,qAdrsBuffer // buffer address
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mov x2,BUFFERSIZE // buffer size
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mov x8,READ // request to read datas
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svc 0 // call system
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ldr x1,qAdrsBuffer // buffer address
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ldrb w0,[x1] // load first character
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100:
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ldp x6,x7,[sp],16 // restaur des 2 registres
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ldp x4,x5,[sp],16 // restaur des 2 registres
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ldp x2,x3,[sp],16 // restaur des 2 registres
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ldp x1,lr,[sp],16 // restaur des 2 registres
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ret
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qAdrsBuffer: .quad sBuffer
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/***************************************************/
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/* Generation random number */
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/***************************************************/
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/* x0 contains limit */
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genereraleas:
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stp x1,lr,[sp,-16]! // save registres
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stp x2,x3,[sp,-16]! // save registres
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stp x4,x5,[sp,-16]! // save registres
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ldr x4,qAdrqGraine
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ldr x2,[x4]
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ldr x3,qNbDep1
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mul x2,x3,x2
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ldr x3,qNbDep2
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add x2,x2,x3
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str x2,[x4] // maj de la graine pour l appel suivant
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cmp x0,#0
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beq 100f
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add x0,x0,#1
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udiv x3,x2,x0
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msub x0,x3,x0,x2 // résult = remainder
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ldp x4,x5,[sp],16 // restaur des 2 registres
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ldp x2,x3,[sp],16 // restaur des 2 registres
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ldp x1,lr,[sp],16 // restaur des 2 registres
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ret
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/*****************************************************/
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qAdrqGraine: .quad qGraine
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qNbDep1: .quad 0x0019660d
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qNbDep2: .quad 0x3c6ef35f
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/********************************************************/
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/* File Include fonctions */
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/********************************************************/
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/* for this file see task include a file in language AArch64 assembly */
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.include "../includeARM64.inc"
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