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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Terminal-control-Coloured-text/ARM-Assembly/terminal-control-coloured-text.arm Normal file
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/* ARM assembly Raspberry PI */
/* program colorText.s */
/* Constantes */
.equ STDOUT, 1 @ Linux output console
.equ EXIT, 1 @ Linux syscall
.equ WRITE, 4 @ Linux syscall
.equ BUFFERSIZE, 100
/* Initialized data */
.data
szMessStartPgm: .asciz "Program start \n"
szMessEndPgm: .asciz "Program normal end.\n"
szMessColorRed: .asciz "Color red.\n"
szCodeInit: .asciz "\033[0m" @ color reinit
szCodeRed: .asciz "\033[31m" @ color red
szMessBlue: .asciz "\033[34mColor Blue\n" @ color blue
szMessTwoColor: .asciz "\033[32mColor Green \033[35m Color Velvet\n"
szMessTest: .asciz "\033[33m\033[1mMessage yellow bold\n"
szCarriageReturn: .asciz "\n"
/* UnInitialized data */
.bss
/* code section */
.text
.global main
main:
ldr r0,iAdrszMessStartPgm @ display start message
bl affichageMess
ldr r0,iAdrszCodeRed @ color red
bl affichageMess
ldr r0,iAdrszMessColorRed
bl affichageMess
ldr r0,iAdrszMessBlue @ message color blue
bl affichageMess
ldr r0,iAdrszMessTwoColor @ message two colors
bl affichageMess
ldr r0,iAdrszMessTest
bl affichageMess
ldr r0,iAdrszCodeInit @ color reinitialize
bl affichageMess
ldr r0,iAdrszMessEndPgm @ display end message
bl affichageMess
100: @ standard end of the program
mov r0, #0 @ return code
mov r7, #EXIT @ request to exit program
svc 0 @ perform system call
iAdrszMessStartPgm: .int szMessStartPgm
iAdrszMessEndPgm: .int szMessEndPgm
iAdrszCodeInit: .int szCodeInit
iAdrszCodeRed: .int szCodeRed
iAdrszMessBlue: .int szMessBlue
iAdrszMessColorRed: .int szMessColorRed
iAdrszMessTwoColor: .int szMessTwoColor
iAdrszMessTest: .int szMessTest
iAdrszCarriageReturn: .int szCarriageReturn
/******************************************************************/
/* display text with size calculation */
/******************************************************************/
/* r0 contains the address of the message */
affichageMess:
push {r0,r1,r2,r7,lr} @ save registers
mov r2,#0 @ counter length */
1: @ loop length calculation
ldrb r1,[r0,r2] @ read octet start position + index
cmp r1,#0 @ if 0 its over
addne r2,r2,#1 @ else add 1 in the length
bne 1b @ and loop
@ so here r2 contains the length of the message
mov r1,r0 @ address message in r1
mov r0,#STDOUT @ code to write to the standard output Linux
mov r7, #WRITE @ code call system "write"
svc #0 @ call system
pop {r0,r1,r2,r7,lr} @ restaur registers
bx lr @ return