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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/String-concatenation/AArch64-Assembly/string-concatenation.aarch64 Normal file
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/* ARM assembly AARCH64 Raspberry PI 3B */
/* program concatStr64.s */
/*******************************************/
/* Constantes file */
/*******************************************/
/* for this file see task include a file in language AArch64 assembly*/
.include "../includeConstantesARM64.inc"
/*******************************************/
/* Initialized data */
/*******************************************/
.data
szMessFinal: .asciz "The final string is \n"
szString: .asciz "Hello "
szString1: .asciz " the world. \n"
/*******************************************/
/* UnInitialized data */
/*******************************************/
.bss
szFinalString: .skip 255
/*******************************************/
/* code section */
/*******************************************/
.text
.global main
main:
// load string
ldr x1,qAdrszString
ldr x2,qAdrszFinalString
mov x4,0
1:
ldrb w0,[x1,x4] // load byte of string
strb w0,[x2,x4]
cmp x0,0 // compar with zero ?
add x3,x4,1
csel x4,x3,x4,ne // if x0 <> 0 x4 = x4 +1 sinon x4
bne 1b
ldr x1,qAdrszString1
mov x3,0
2:
ldrb w0,[x1,x3] // load byte of string 1
strb w0,[x2,x4]
cmp x0,0 // compar with zero ?
add x5,x4,1
csel x4,x5,x4,ne
add x5,x3,1
csel x3,x5,x3,ne
bne 2b
mov x0,x2 // display final string
bl affichageMess
100: // standard end of the program */
mov x0,0 // return code
mov x8,EXIT // request to exit program
svc 0 // perform the system call
qAdrszString: .quad szString
qAdrszString1: .quad szString1
qAdrszFinalString: .quad szFinalString
qAdrszMessFinal: .quad szMessFinal
/********************************************************/
/* File Include fonctions */
/********************************************************/
/* for this file see task include a file in language AArch64 assembly */
.include "../includeARM64.inc"