174 lines
4.9 KiB
Text
174 lines
4.9 KiB
Text
/* ARM assembly Raspberry PI */
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/* program fibseries.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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/*******************************************/
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/* Constantes */
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/*******************************************/
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.include "../constantes.inc"
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.equ NBSERIES, 10
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.equ NBNUMBER, 15
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/*******************************************/
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/* macros */
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/*******************************************/
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//.include "../../ficmacros32.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 32 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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szMessVinci: .asciz "Leonardo numbers :\n"
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szMessFibo: .asciz "\nFibonaci series :\n"
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szSpace: .asciz " "
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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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.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 r0,iAdrszMessDebutPgm
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bl affichageMess @ start message
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ldr r0,iAdrszMessFibo
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bl affichageMess
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mov r4,#2 @ series counter
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1: @ loop series
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mov r0,r4
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ldr r1,iAdrsZoneConv
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bl conversion10
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ldr r0,iAdrsZoneConv @ display series
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bl affichageMess
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mov r0,#0 @ rank
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mov r1,r4 @ serie number
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mov r2,#NBNUMBER @ maxi counter
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bl genererFibo
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ldr r0,iAdrszCarriageReturn
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bl affichageMess
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add r4,r4,#1 @ increment series counter
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cmp r4,#NBSERIES @ maxi ?
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blt 1b
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ldr r0,iAdrszMessFinOK
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bl affichageMess
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b 100f
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99:
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ldr r0,iAdrszMessErreur @ error
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bl affichageMess
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mov r0, #1 @ return code error
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b 100f
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100:
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mov r7,#EXIT @ program end
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svc #0 @ system call
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iAdrszMessDebutPgm: .int szMessDebutPgm
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iAdrszMessFinOK: .int szMessFinOK
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iAdrszMessErreur: .int szMessErreur
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iAdrsZoneConv: .int sZoneConv
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iAdrszMessVinci: .int szMessVinci
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iAdrszMessFibo: .int szMessFibo
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/***************************************************/
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/* Generation Fibonacci numbers */
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/***************************************************/
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/* r0 contains n */
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/* r1 contains series number */
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/* r2 contains limit number */
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genererFibo:
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push {r3-r10,lr} @ save registers
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lsl r10,r1,#2
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sub sp,r10 @ reserve area on stack
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mov r7,sp
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mov r4,#0
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mov r5,#0
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1: @ init area loop
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str r4,[r7,r5,lsl #2]
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add r5,r5,#1
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cmp r5,r1
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blt 1b
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mov r4,#1
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str r4,[r7] @ store value 1 in first item
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mov r4,#0
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2:
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mov r5,#0
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mov r6,r0
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cmp r6,#0 @ L(0) ?
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bne 3f
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bl displayNumber
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b 7f
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3:
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cmp r6,#1 @ L(1) ?
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bne 4f
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mov r0,#1
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bl displayNumber
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b 7f
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4:
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sub r3,r1,#1
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5:
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ldr r8,[r7,r3,lsl #2] @ load ancien result
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add r5,r5,r8 @ add result
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subs r3,r3,#1 @ decrement counter
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bge 5b
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mov r0,r5
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bl displayNumber
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mov r3,r1
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sub r8,r3,#1
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6: @ results shift loop
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ldr r9,[r7,r8,lsl #2] @ load result n-1
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str r9,[r7,r3,lsl #2] @ store in n result
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sub r3,r3,#1 @ and loop
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subs r8,r8,#1
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bge 6b
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str r5,[r7] @ store new result in first item
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7:
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add r0,r6,#1 @ increment rank
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add r4,r4,#1 @ increment counter
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cmp r4,r2 @ end compute ?
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blt 2b
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100:
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add sp,r10 @ free reserved area
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pop {r3-r10,pc} @ restaur registers
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/***************************************************/
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/* display number */
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/***************************************************/
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/* r0 contains number */
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displayNumber:
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push {r1,r2,lr} @ save registers
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ldr r1,iAdrsZoneConv
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bl conversion10
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mov r2,#0
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add r1,r0
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strb r2,[r1]
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ldr r0,iAdrsZoneConv
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bl affichageMess
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ldr r0,iAdrszSpace
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bl affichageMess
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100:
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pop {r1,r2,pc} @ restaur registers
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iAdrszCarriageReturn: .int szCarriageReturn
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iAdrszSpace: .int szSpace
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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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