103 lines
3.7 KiB
Plaintext
103 lines
3.7 KiB
Plaintext
/* ARM assembly Raspberry PI */
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/* program vanEckSerie.s */
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/* REMARK 1 : this program use routines in a include file
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see task Include a file language arm assembly
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for the routine affichageMess conversion10
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see at end of this program the instruction include */
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/* for constantes see task include a file in arm assembly */
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/************************************/
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/* Constantes */
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/************************************/
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.include "../constantes.inc"
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.equ MAXI, 1000
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/*********************************/
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/* Initialized data */
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/*********************************/
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.data
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sMessResultElement: .asciz " @ "
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szCarriageReturn: .asciz "\n"
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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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TableVanEck: .skip 4 * MAXI
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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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mov r2,#0 @ begin first element
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mov r3,#0 @ current counter
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ldr r4,iAdrTableVanEck @ table address
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str r2,[r4,r3,lsl #2] @ store first zéro
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1: @ begin loop
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mov r5,r3 @ init current indice
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2:
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sub r5,#1 @ decrement
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cmp r5,#0 @ end table ?
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movlt r2,#0 @ yes, move zero to next element
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blt 3f
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ldr r6,[r4,r5,lsl #2] @ load element
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cmp r6,r2 @ and compare with the last element
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bne 2b @ not equal
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sub r2,r3,r5 @ else compute gap
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3:
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add r3,r3,#1 @ increment counter
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str r2,[r4,r3,lsl #2] @ and store new element
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cmp r3,#MAXI
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blt 1b
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mov r2,#0
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4: @ loop display ten elements
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ldr r0,[r4,r2,lsl #2]
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ldr r1,iAdrsZoneConv
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bl conversion10 @ call décimal conversion
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ldr r0,iAdrsMessResultElement
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ldr r1,iAdrsZoneConv @ insert conversion in message
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bl strInsertAtCharInc
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mov r1,#0 @ final zéro
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strb r1,[r0,#5] @
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bl affichageMess @ display message
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add r2,#1 @ increment indice
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cmp r2,#10 @ end ?
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blt 4b @ no -> loop
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ldr r0,iAdrszCarriageReturn
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bl affichageMess
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mov r2,#MAXI - 10
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5: @ loop display ten elements 990-999
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ldr r0,[r4,r2,lsl #2]
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ldr r1,iAdrsZoneConv
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bl conversion10 @ call décimal conversion
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ldr r0,iAdrsMessResultElement
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ldr r1,iAdrsZoneConv @ insert conversion in message
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bl strInsertAtCharInc
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mov r1,#0 @ final zéro
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strb r1,[r0,#5] @
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bl affichageMess @ display message
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add r2,#1 @ increment indice
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cmp r2,#MAXI @ end ?
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blt 5b @ no -> loop
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ldr r0,iAdrszCarriageReturn
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bl affichageMess
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100: @ standard end of the program
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mov r0, #0 @ return code
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mov r7, #EXIT @ request to exit program
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svc #0 @ perform the system call
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iAdrszCarriageReturn: .int szCarriageReturn
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iAdrsMessResultElement: .int sMessResultElement
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iAdrsZoneConv: .int sZoneConv
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iAdrTableVanEck: .int TableVanEck
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/***************************************************/
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/* ROUTINES INCLUDE */
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/***************************************************/
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.include "../affichage.inc"
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