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Input loop: Difference between revisions
add task to ARM64 assembly Raspberry Pi
(add task to ARM64 assembly Raspberry Pi) |
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The stream will have an unknown amount of data on it.
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=={{header|AArch64 Assembly}}==
{{works with|as|Raspberry Pi 3B version Buster 64 bits}}
<lang AArch64 Assembly>
/* ARM assembly AARCH64 Raspberry PI 3B */
/* program inputLoop64.s */
/*******************************************/
/* Constantes file */
/*******************************************/
/* for this file see task include a file in language AArch64 assembly*/
.include "../includeConstantesARM64.inc"
.equ BUFSIZE, 10000
.equ LINESIZE, 100
/*********************************/
/* Initialized data */
/*********************************/
.data
szMessErreur: .asciz "Erreur ouverture fichier input.\n"
szMessErreur1: .asciz "Erreur fermeture fichier.\n"
szMessErreur2: .asciz "Erreur lecture fichier.\n"
szCarriageReturn: .asciz "\n"
szMessEndLine: .asciz "<<<<<< End line.\n"
szMessCodeErr: .asciz "Error code décimal : @ \n"
szNameFileInput: .asciz "input.txt"
/*******************************************/
/* DONNEES NON INITIALISEES */
/*******************************************/
.bss
sZoneConv: .skip 24
sBuffer: .skip BUFSIZE
sBufferWord: .skip LINESIZE
/**********************************************/
/* -- Code section */
/**********************************************/
.text
.global main
main:
/* open file */
mov x0,AT_FDCWD
ldr x1,qAdrszNameFileInput // file name
mov x2,O_RDONLY // flags
mov x3,0 // mode
mov x8,OPEN // call system OPEN
svc 0
cmp x0,0 // open error ?
ble erreur
/* read file */
mov x9,x0 // save File Descriptor
ldr x1,qAdrsBuffer // buffer address
mov x2,BUFSIZE // buffer size
mov x8,READ // call system READ
svc 0
cmp x0,0 // read error ?
ble erreur2
mov x2,x0 // length read characters
/* buffer analyze */
ldr x3,qAdrsBuffer // buffer address
ldr x5,qAdrsBufferWord // buffer address
mov x7,0 // word byte counter
mov x4,0 // byte counter
mov x10,1
1:
ldrb w6,[x3,x4] // load byte buffer
cmp x6,' ' // space ?
csel x8,xzr,x10,eq // yes 0-> x8
beq 2f
cmp x6,0xA // end line ?
csel x8,x10,xzr,eq // yes 1 -> x8
beq 2f
cmp x6,0xD // end line ?
csel x8,x10,xzr,eq
beq 3f
strb w6,[x5,x7] // store byte
add x7,x7,1 // increment word byte counter
b 4f
2: // word end
cmp x7,0
beq 3f
mov x6,0 // store 0 final
strb w6,[x5,x7]
mov x0,x5 // display word
bl affichageMess
ldr x0,qAdrszCarriageReturn
bl affichageMess
mov x7,0 // raz word byte counter
3:
cmp x8,1 // end line ?
bne 4f
ldr x0,qAdrszMessEndLine
bl affichageMess
4:
add x4,x4,1 // increment read buffer counter
cmp x4,x2 // end bytes ?
blt 1b // no -> loop
4:
/* close imput file */
mov x0,x9 // Fd
mov x8,CLOSE // call system CLOSE
svc 0
cmp x0,0 // close error ?
blt erreur1
mov x0,0 // return code OK
b 100f
erreur:
ldr x1,qAdrszMessErreur
bl displayError
mov x0,1 // error return code
b 100f
erreur1:
ldr x1,qAdrszMessErreur1
bl displayError
mov x0,1 // error return code
b 100f
erreur2:
ldr x1,qAdrszMessErreur2
bl displayError
mov x0,1 // error return code
b 100f
100: // end program
mov x8,EXIT
svc 0
qAdrszNameFileInput: .quad szNameFileInput
qAdrszMessErreur: .quad szMessErreur
qAdrszMessErreur1: .quad szMessErreur1
qAdrszMessErreur2: .quad szMessErreur2
qAdrszCarriageReturn: .quad szCarriageReturn
qAdrszMessEndLine: .quad szMessEndLine
qAdrsBuffer: .quad sBuffer
qAdrsBufferWord: .quad sBufferWord
/******************************************************************/
/* display error message */
/******************************************************************/
/* x0 contains error code */
/* x1 contains address error message */
displayError:
stp x2,lr,[sp,-16]! // save registers
mov x2,x0 // save error code
mov x0,x1 // display message error
bl affichageMess
mov x0,x2
ldr x1,qAdrsZoneConv // conversion error code
bl conversion10S // decimal conversion
ldr x0,qAdrszMessCodeErr
ldr x1,qAdrsZoneConv
bl strInsertAtCharInc // insert result at @ character
bl affichageMess // display message final
ldp x2,lr,[sp],16 // restaur 2 registers
ret // return to address lr x30
qAdrsZoneConv: .quad sZoneConv
qAdrszMessCodeErr: .quad szMessCodeErr
/********************************************************/
/* File Include fonctions */
/********************************************************/
/* for this file see task include a file in language AArch64 assembly */
.include "../includeARM64.inc"
</lang>
=={{header|Ada}}==
This example reads in a text stream from standard input line by line
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