194 lines
6.5 KiB
Plaintext
194 lines
6.5 KiB
Plaintext
/* ARM assembly Raspberry PI */
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/* program createarray2.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 STDIN, 0 @ Linux input console
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.equ READ, 3 @ Linux syscall
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.equ BUFFERSIZE, 64
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/*********************************/
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/* Initialized data */
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/*********************************/
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.data
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szMessRead1: .asciz "Input size level 1 : "
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szMessRead2: .asciz "Input size level 2 : "
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szMessIndice1: .asciz "Indice 1 ="
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szMessIndice2: .asciz "Indice 2 ="
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szMessResult: .asciz "Item = "
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szMessStart: .asciz "Program 32 bits start.\n"
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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 BUFFERSIZE // conversion buffer
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sZoneConv1: .skip BUFFERSIZE // conversion buffer
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sZoneConv2: .skip BUFFERSIZE // conversion buffer
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sBuffer: .skip BUFFERSIZE
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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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ldr r0,iAdrszMessStart
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bl affichageMess
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ldr r0,iAdrszMessRead1
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bl affichageMess
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mov r0,#STDIN @ Linux input console
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ldr r1,iAdrsBuffer @ buffer address
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mov r2,#BUFFERSIZE @ buffer size
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mov r7,#READ @ request to read datas
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svc 0 @ call system
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ldr r0,iAdrsBuffer @ buffer address
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bl conversionAtoD
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mov r9,r0
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ldr r0,iAdrszMessRead2
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bl affichageMess
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mov r0,#STDIN @ Linux input console
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ldr r1,iAdrsBuffer @ buffer address
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mov r2,#BUFFERSIZE @ buffer size
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mov r7,#READ @ request to read datas
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svc 0 @ call system
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ldr r0,iAdrsBuffer @ buffer address
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bl conversionAtoD
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mov r10,r0
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@ create array
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lsl r12,r10,#2 @ compute size level 2
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mul r8,r12,r9 @ compute size array
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sub sp,sp,r8 @ reserve place on stack
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mov fp,sp
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mov r0,#0 @ init all items array
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1: @ begin loop1
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mov r1,#0
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2: @ begin loop2
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mul r2,r0,r12
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add r2,r2,r1, lsl #2
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str r2,[fp,r2] @ store shift in array item
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add r1,r1,#1
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cmp r1,r10
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blt 2b
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add r0,r0,#1
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cmp r0,r9
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blt 1b
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mov r0,fp
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mov r1,#1 @ second indice level 1
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mov r2,#0 @ first indice level 2
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mov r3,r12 @ level 2 size
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bl displayItem
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mov r0,fp
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sub r1,r9,#1 @ last level 1
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sub r2,r10,#1 @ last level 2
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mov r3,r12 @ level 2 size
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bl displayItem
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add sp,sp,r8 @ release space on stack
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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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iAdrsZoneConv: .int sZoneConv
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iAdrsZoneConv1: .int sZoneConv1
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iAdrsZoneConv2: .int sZoneConv2
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iAdrszMessRead1: .int szMessRead1
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iAdrszMessRead2: .int szMessRead2
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iAdrsBuffer: .int sBuffer
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iAdrszMessResult: .int szMessResult
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iAdrszMessStart: .int szMessStart
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iAdrszMessIndice1: .int szMessIndice1
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iAdrszMessIndice2: .int szMessIndice2
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/***************************************************/
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/* display array item */
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/***************************************************/
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/* r0 array address */
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/* r1 indice 1 */
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/* r2 indice 2 */
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/* r3 level 2 size */
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displayItem:
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push {r1-r6,lr} @ save des registres
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mov r5,r0
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mov r6,r1
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mov r0,r6
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ldr r1,iAdrsZoneConv
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bl conversion10 @ conversion indice 1
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mov r0,r2
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ldr r1,iAdrsZoneConv1
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bl conversion10 @ conversion indice 2
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mul r4,r6,r3 @ multiply indice level 1 by level 2 size
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add r4,r4,r2, lsl #2 @ add indice level 2 * 4 (4 bytes)
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ldr r0,[r5,r4] @ load array item
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ldr r1,iAdrsZoneConv2
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bl conversion10
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mov r0,#7 @ string number to display
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ldr r1,iAdrszMessIndice1
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ldr r2,iAdrsZoneConv @ insert conversion in message
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ldr r3,iAdrszMessIndice2
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ldr r4,iAdrsZoneConv1 @ insert conversion in message
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push {r4}
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ldr r4,iAdrszMessResult
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push {r4}
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ldr r4,iAdrsZoneConv2 @ insert conversion in message
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push {r4}
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ldr r4,iAdrszCarriageReturn
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push {r4}
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bl displayStrings @ display message
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add sp,sp,#16
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100:
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pop {r1-r6,pc}
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/***************************************************/
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/* display multi strings */
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/***************************************************/
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/* r0 contains number strings address */
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/* r1 address string1 */
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/* r2 address string2 */
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/* r3 address string3 */
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/* other address on the stack */
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/* thinck to add number other address * 4 to add to the stack */
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displayStrings: @ INFO: displayStrings
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push {r1-r4,fp,lr} @ save des registres
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add fp,sp,#24 @ save paraméters address (6 registers saved * 4 bytes)
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mov r4,r0 @ save strings number
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cmp r4,#0 @ 0 string -> end
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ble 100f
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mov r0,r1 @ string 1
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bl affichageMess
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cmp r4,#1 @ number > 1
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ble 100f
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mov r0,r2
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bl affichageMess
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cmp r4,#2
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ble 100f
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mov r0,r3
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bl affichageMess
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cmp r4,#3
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ble 100f
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mov r3,#3
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sub r2,r4,#4
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1: @ loop extract address string on stack
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ldr r0,[fp,r2,lsl #2]
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bl affichageMess
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subs r2,#1
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bge 1b
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100:
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pop {r1-r4,fp,pc}
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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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