103 lines
3.1 KiB
Plaintext
103 lines
3.1 KiB
Plaintext
/* ARM assembly Raspberry PI */
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/* program stringLength.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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/*********************************/
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/* Initialized data */
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/*********************************/
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.data
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sMessResultByte: .asciz "===Byte Length=== : @ \n"
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sMessResultChar: .asciz "===Character Length=== : @ \n"
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szString1: .asciz "møøse€"
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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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/*********************************/
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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,iAdrszString1
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bl affichageMess @ display string
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ldr r0,iAdrszCarriageReturn
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bl affichageMess
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ldr r0,iAdrszString1
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mov r1,#0
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1: @ loop compute length bytes
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ldrb r2,[r0,r1]
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cmp r2,#0
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addne r1,#1
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bne 1b
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mov r0,r1 @ result display
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ldr r1,iAdrsZoneConv
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bl conversion10 @ call decimal conversion
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ldr r0,iAdrsMessResultByte
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ldr r1,iAdrsZoneConv @ insert conversion in message
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bl strInsertAtCharInc
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bl affichageMess
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ldr r0,iAdrszString1
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mov r1,#0
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mov r3,#0
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2: @ loop compute length characters
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ldrb r2,[r0,r1]
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cmp r2,#0
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beq 6f
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and r2,#0b11100000 @ 3 bytes ?
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cmp r2,#0b11100000
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bne 3f
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add r3,#1
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add r1,#3
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b 2b
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3:
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and r2,#0b11000000 @ 2 bytes ?
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cmp r2,#0b11000000
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bne 4f
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add r3,#1
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add r1,#2
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b 2b
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4: @ else 1 byte
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add r3,#1
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add r1,#1
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b 2b
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6:
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mov r0,r3
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ldr r1,iAdrsZoneConv
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bl conversion10 @ call decimal conversion
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ldr r0,iAdrsMessResultChar
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ldr r1,iAdrsZoneConv @ insert conversion in message
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bl strInsertAtCharInc
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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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iAdrsMessResultByte: .int sMessResultByte
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iAdrsMessResultChar: .int sMessResultChar
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iAdrszString1: .int szString1
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iAdrsZoneConv: .int sZoneConv
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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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