534 lines
16 KiB
Plaintext
534 lines
16 KiB
Plaintext
/* ARM assembly AARCH64 Raspberry PI 3B */
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/* program routstring64.s */
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/*******************************************/
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/* Constantes */
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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 BUFFERSIZE, 80
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/*******************************************/
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/* macros */
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/*******************************************/
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//.include "../../ficmacros64.inc" // for developper debugging
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/*********************************/
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/* Initialized data */
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/*********************************/
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.data
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szMessDebutPgm: .asciz "Program 64 bits start. \n"
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szCarriageReturn: .asciz "\n"
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szMessFinOK: .asciz "Program normal end. \n"
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szMessErreur: .asciz "Error !!!\n"
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szMessValString: .asciz "String value : "
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szMessLenStr: .asciz "String length : "
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szMessCopyString: .asciz "String copy : "
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szMessEmpty: .asciz "String empty.\n"
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szMessStrEqual: .asciz "Strings are equals.\n"
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szMessStrNotEqual: .asciz "Strings are not equals.\n"
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szMessStringfound: .asciz "String found at position :"
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szMessStringJoint: .asciz "Joint string : "
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szMessStringRep: .asciz "Replace occurences string : "
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szMessBufferError: .asciz "Error : Buffer too small !!\n"
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szString1: .asciz "ABCDE"
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.equ LGSTRING1, . - szString1 - 1
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szString2: .asciz ""
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szString3: .asciz "ABCDF"
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szString4: .asciz "CD"
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szString5: .asciz "AABCIEFAAGHIAA"
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szStringOcc: .asciz "AA"
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szStringRep: .asciz "ZZ"
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.align 4
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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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szStringRec: .skip BUFFERSIZE
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.align 4
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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:
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ldr x0,qAdrszMessDebutPgm
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bl affichageMess // start message
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ldr x0,qAdrszMessValString
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bl affichageMess
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ldr x0,qAdrszString1
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bl affichageMess
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ldr x0,qAdrszCarriageReturn
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bl affichageMess
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ldr x0,qAdrszMessLenStr
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bl affichageMess
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mov x0,#LGSTRING1 // string length static
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bl displayNumber
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ldr x0,qAdrszMessLenStr
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bl affichageMess
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ldr x0,qAdrszString1
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bl stringLen // string length
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bl displayNumber
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ldr x0,qAdrszString1 // string copy
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ldr x1,qAdrszStringRec
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mov x2,#BUFFERSIZE
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bl copyString
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cmp x0,#-1
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beq 100f
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ldr x0,qAdrszMessCopyString
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bl affichageMess
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ldr x0,qAdrszStringRec
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bl affichageMess
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ldr x0,qAdrszCarriageReturn
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bl affichageMess
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ldr x0,qAdrszString2 // empty string
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bl emptyString
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ldr x0,qAdrszString1 // string comparison
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ldr x0,qAdrszString3
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bl comparString
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cmp x0,#0
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bne 1f
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ldr x0,qAdrszMessStrEqual
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bl affichageMess
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b 2f
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1:
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ldr x0,qAdrszMessStrNotEqual
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bl affichageMess
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2:
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ldr x0,qAdrszString1 // search substring
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ldr x1,qAdrszString4
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bl searchSubString
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cmp x0,#-1
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beq 3f
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mov x1,x0
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ldr x0,qAdrszMessStringfound
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bl affichageMess
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mov x0,x1
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bl displayNumber
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3:
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ldr x0,qAdrszMessStringJoint // joint strings
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bl affichageMess
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ldr x0,qAdrszString1
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ldr x1,qAdrszString3
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ldr x2,qAdrszStringRec
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mov x3,#BUFFERSIZE
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bl concatString
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cmp x0,#-1
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beq 100f
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ldr x0,qAdrszStringRec
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bl affichageMess
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ldr x0,qAdrszCarriageReturn
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bl affichageMess
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ldr x0,qAdrszMessStringRep // replace string or char
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bl affichageMess
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ldr x0,qAdrszString5 // string
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ldr x1,qAdrszStringOcc // string occurence
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ldr x2,qAdrszStringRep // replace string
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ldr x3,qAdrszStringRec // buffer
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mov x4,#BUFFERSIZE // buffer size
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bl replaceOccString
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cmp x0,#-1
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beq 100f
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ldr x0,qAdrszStringRec
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bl affichageMess
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ldr x0,qAdrszCarriageReturn
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bl affichageMess
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ldr x0,qAdrszMessFinOK
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bl affichageMess
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b 100f
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99:
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ldr x0,qAdrszMessErreur // error
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bl affichageMess
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mov x0, #1 // return code error
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b 100f
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100:
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mov x8,EXIT
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svc #0 // system call
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qAdrszMessDebutPgm: .quad szMessDebutPgm
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qAdrszMessFinOK: .quad szMessFinOK
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qAdrszMessErreur: .quad szMessErreur
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qAdrsZoneConv: .quad sZoneConv
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qAdrszMessLenStr: .quad szMessLenStr
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qAdrszMessValString: .quad szMessValString
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qAdrszMessCopyString: .quad szMessCopyString
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qAdrszMessStrEqual: .quad szMessStrEqual
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qAdrszMessStrNotEqual: .quad szMessStrNotEqual
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qAdrszMessStringfound: .quad szMessStringfound
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qAdrszMessStringJoint: .quad szMessStringJoint
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qAdrszMessStringRep: .quad szMessStringRep
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qAdrszString1: .quad szString1
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qAdrszString2: .quad szString2
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qAdrszString3: .quad szString3
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qAdrszString4: .quad szString4
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qAdrszString5: .quad szString5
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qAdrszStringRec: .quad szStringRec
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qAdrszStringOcc: .quad szStringOcc
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qAdrszStringRep: .quad szStringRep
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/***************************************************/
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/* String length */
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/***************************************************/
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/* x0 contains string address */
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/* x0 returns length */
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stringLen:
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stp x1,lr,[sp,-16]! //
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stp x2,x3,[sp,-16]!
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mov x1,#0 // byte counter
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1:
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ldrb w2,[x0,x1] // load byte
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cmp x2,#0 // final zero ?
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csel x0,x1,x0,eq // return counter
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beq 100f
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add x1,x1,#1 // increment counter
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b 1b // and loop
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100:
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ldp x2,x3,[sp],16
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ldp x1,lr,[sp],16
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ret
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/***************************************************/
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/* empty String */
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/***************************************************/
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/* x0 contains string address */
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/* x0 returns 0 if string empty */
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emptyString:
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stp x1,lr,[sp,-16]!
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ldrb w0,[x0] // load first byte
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cmp x0,#0
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bne 100f
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ldr x0,qAdrszMessEmpty
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bl affichageMess
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mov x0,#0
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100:
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ldp x1,lr,[sp],16
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ret
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qAdrszMessEmpty: .quad szMessEmpty
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/***************************************************/
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/* String copy */
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/***************************************************/
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/* x0 contains string address */
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/* x1 contains area string */
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/* x2 contains area size */
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copyString:
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stp x1,lr,[sp,-16]!
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stp x2,x3,[sp,-16]!
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stp x4,x5,[sp,-16]!
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mov x5,#0 // indice
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1:
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ldrb w3,[x0,x5] // load byte
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strb w3,[x1,x5] // store byte
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cmp x3,#0 // final zero ?
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csel x0,x5,x0,eq
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beq 100f
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add x5,x5,#1 // increment indice
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cmp x5,x2 // > buffer size ?
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bge 99f // error
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b 1b // loop
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99:
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ldr x0,qAdrszMessBufferError
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bl affichageMess
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mov x0,#-1
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100:
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ldp x4,x5,[sp],16
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ldp x2,x3,[sp],16
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ldp x1,lr,[sp],16
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ret
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/***************************************************/
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/* display number */
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/***************************************************/
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/* x0 contains number */
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displayNumber:
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stp x1,lr,[sp,-16]! // TODO: a completer
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ldr x1,qAdrsZoneConv
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bl conversion10
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ldr x0,qAdrsZoneConv
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bl affichageMess
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ldr x0,qAdrszCarriageReturn
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bl affichageMess
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100:
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ldp x1,lr,[sp],16 // TODO: a completer
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ret
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qAdrszCarriageReturn: .quad szCarriageReturn
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/************************************/
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/* String compare */
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/************************************/
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/* x0 et x1 contains strings address */
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/* x0 returns 0 if equals -1 if less 1 if higter */
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comparString:
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stp x1,lr,[sp,-16]!
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stp x2,x3,[sp,-16]!
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stp x4,x5,[sp,-16]!
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mov x2,#0 // indice
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1:
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ldrb w3,[x0,x2] // load byte string 1
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ldrb w4,[x1,x2] // load byte string 2
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cmp x3,x4
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blt 2f
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bgt 3f
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cmp x3,#0 // final zero ?
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csel x0,xzr,x0,eq // equal
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beq 100f // and end
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add x2,x2,#1 // increment indice
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b 1b // and loop
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2:
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mov x0,#-1 // less
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b 100f
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3: // higt
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mov x0,#1
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100:
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ldp x4,x5,[sp],16
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ldp x2,x3,[sp],16
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ldp x1,lr,[sp],16
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ret
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/******************************************************************/
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/* search a substring in the string */
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/******************************************************************/
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/* x0 contains the address of the input string */
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/* x1 contains the address of substring */
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/* x0 returns index of substring in string or -1 if not found */
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searchSubString:
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stp x1,lr,[sp,-16]!
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stp x2,x3,[sp,-16]!
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stp x4,x5,[sp,-16]!
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stp x6,x7,[sp,-16]!
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mov x2,#0 // counter byte input string
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mov x3,#0 // counter byte string
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mov x6,#-1 // index found
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ldrb w4,[x1,x3]
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1:
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ldrb w5,[x0,x2] // load byte string
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cmp x5,#0 // zero final ?
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mov x7,-1
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csel x0,x7,x0,eq // yes returns error
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beq 100f
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cmp x5,x4 // compare character
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beq 2f
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mov x6,#-1 // no equals - > raz index
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mov x3,#0 // and raz counter byte
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add x2,x2,#1 // and increment counter byte
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b 1b // and loop
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2: // characters equals
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cmp x6,#-1 // first characters equals ?
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csel x6,x2,x6,eq // yes -> index begin in r6
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add x3,x3,#1 // increment counter substring
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ldrb w4,[x1,x3] // and load next byte
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cmp x4,#0 // zero final ?
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beq 3f // yes -> end search
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add x2,x2,#1 // else increment counter string
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b 1b // and loop
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3:
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mov x0,x6
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100:
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ldp x6,x7,[sp],16
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ldp x4,x5,[sp],16
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ldp x2,x3,[sp],16
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ldp x1,lr,[sp],16
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ret
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/******************************************************************/
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/* joint strings */
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/******************************************************************/
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/* x0 and x1 contains strings address */
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/* x2 contains address buffer */
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/* x3 contains buffer length */
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concatString:
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stp x1,lr,[sp,-16]!
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stp x2,x3,[sp,-16]!
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stp x4,x5,[sp,-16]!
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stp x6,x7,[sp,-16]!
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mov x6,#0
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mov x5,#0
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1:
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ldrb w4,[x0,x6] // load byte string 1
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cmp x4,#0 // final zero ?
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beq 2f
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strb w4,[x2,x6] // store byte in buffer
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add x6,x6,#1 // increment indice
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cmp x6,x3 // buffer max length ?
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bge 99f // error
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b 1b // else loop
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2:
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ldrb w4,[x1,x5] // load byte string 2
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strb w4,[x2,x6] // store byte in buffer
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cmp x4,#0 // zero final ?
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beq 3f // end
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add x6,x6,#1 // increment indice
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cmp x6,x3 // buffer max length ?
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bge 99f // yes error
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add x5,x5,#1 // else loop
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b 2b
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3:
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mov x0,x6
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b 100f
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99:
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ldr x0,qAdrszMessBufferError
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bl affichageMess
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mov x0,#-1
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100:
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ldp x6,x7,[sp],16
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ldp x4,x5,[sp],16
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ldp x2,x3,[sp],16
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ldp x1,lr,[sp],16
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ret
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qAdrszMessBufferError: .quad szMessBufferError
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/******************************************************************/
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/* replace occurences strings */
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/******************************************************************/
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/* x0 string address */
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/* x1 occurence string address */
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/* x2 replace string address */
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/* x3 contains address buffer */
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/* x4 contains buffer length */
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replaceOccString:
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stp x1,lr,[sp,-16]! // TODO: a completer
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stp x2,x3,[sp,-16]!
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stp x4,x5,[sp,-16]!
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stp x6,x7,[sp,-16]!
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stp x8,x9,[sp,-16]!
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stp x10,x11,[sp,-16]!
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mov x12,x0
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mov x11,x1
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mov x9,#0 // indice string
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mov x6,#0 // indice occurence
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mov x8,#0 // indice write buffer
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mov x10,#-1 // string occ start address
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1:
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ldrb w0,[x11,x6] // load search byte
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cmp x0,#0 // final zero ?
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beq 3f
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2:
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ldrb w7,[x12,x9] // load string byte
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cmp x7,#0 // zero final ?
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beq 6f
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cmp x0,x7
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bne 4f // if not equal
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cmp x10,#-1 // string equal begin
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csel x10,x9,x10,eq // string equal begin = string indice
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add x9,x9,#1 // increment indice
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add x6,x6,#1
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b 1b // loop
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3: // end of strings equals
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mov x1,x8
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bl replaceStr // replace string
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cmp x0,#-1 // error ?
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beq 99f
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mov x8,x0
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mov x6,#0 // raz indice search
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mov x10,#-1 // raz string equal begin
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b 1b
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4: // bytes not equals
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cmp x10,#-1 // if not string equal begin
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beq 5f
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41:
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ldrb w0,[x12,x10] // store bytes string
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strb w0,[x3,x8]
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add x8,x8,#1
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cmp x8,x4
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bge 99f
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add x10,x10,#1
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cmp x10,x9
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blt 41b
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mov x10,#-1 // raz string equal begin
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mov x6,#0 // raz indice occurence
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b 1b // loop
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5: // byte not equal
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str x7,[x3,x8] // store byte string in buffer
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add x8,x8,#1
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cmp x8,x4 // max buffer size ?
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bge 99f // error
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add x9,x9,#1 // inc indice chaine
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mov x6,#0 // raz indice occ
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b 1b // loop
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6: // end string
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ldrb w0,[x11,x6] // load search byte
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cmp x0,#0 // final zero
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bne 7f
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cmp x10,#-1 //
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beq 100f
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mov x1,x8
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bl replaceStr // replace
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b 100f
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7:
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cmp x10,#-1 // pas de char en cours
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bne 8f
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mov x0,#0
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strb w0,[x3,x8] // final zero
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b 100f
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8:
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ldrb w0,[x12,x10] // load string byte
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strb w0,[x3,x8] // store buffer byte
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add x8,x8,#1
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cmp x8,x4
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bge 99f
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add x10,x10,#1 // increment begin string
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cmp x10,x9 // compare with position string
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blt 8b // loop
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mov x0,#0
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strb w0,[x3,x8] // final zero
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b 100f
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99: // buffer size error
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ldr x0,qAdrszMessBufferError
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bl affichageMess
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mov x0,#-1
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100:
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ldp x10,x11,[sp],16
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ldp x8,x9,[sp],16
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ldp x6,x7,[sp],16
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ldp x4,x5,[sp],16
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ldp x2,x3,[sp],16
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ldp x1,lr,[sp],16 // TODO: a completer
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ret
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/******************************************************************/
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/* replace occurences strings */
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/******************************************************************/
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/* x0 string address */
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/* x1 indice to replace */
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/* x2 replace string address */
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/* x3 contains address buffer */
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/* x4 contains buffer length */
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/* x0 return new buffer position */
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replaceStr:
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stp x1,lr,[sp,-16]! // TODO: a completer
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stp x5,x6,[sp,-16]!
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mov x5,#0
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1:
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ldrb w6,[x2,x5] // load replace byte
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cmp x6,#0 // final zero
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csel x0,x1,x0,eq
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beq 100f
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strb w6,[x3,x1] // store byte in buffer
|
|
add x1,x1,#1
|
|
cmp x1,x4 // max size buffer ?
|
|
bge 99f // error
|
|
add x5,x5,#1
|
|
b 1b
|
|
|
|
99:
|
|
ldr x0,qAdrszMessBufferError
|
|
bl affichageMess
|
|
mov x0,#-1
|
|
|
|
100:
|
|
ldp x5,x6,[sp],16
|
|
ldp x1,lr,[sp],16 // TODO: a completer
|
|
ret
|
|
/***************************************************/
|
|
/* ROUTINES INCLUDE */
|
|
/***************************************************/
|
|
/* for this file see task include a file in language AArch64 assembly*/
|
|
.include "../includeARM64.inc"
|