153 lines
4.8 KiB
Plaintext
153 lines
4.8 KiB
Plaintext
/* ARM assembly AARCH64 Raspberry PI 3B */
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/* program binarydigit.s */
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/*******************************************/
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/* Constantes file */
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/*******************************************/
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/* for this file see task include a file in language AArch64 assembly*/
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.include "../includeConstantesARM64.inc"
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/*******************************************/
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/* Initialized data */
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/*******************************************/
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.data
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sMessAffBindeb: .asciz "The decimal value "
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sMessAffBin: .asciz " should produce an output of "
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szRetourLigne: .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 100
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sZoneBin: .skip 100
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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 x5,5
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mov x0,x5
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ldr x1,qAdrsZoneConv
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bl conversion10S
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mov x0,x5
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ldr x1,qAdrsZoneBin
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bl conversion2 // binary conversion and display résult
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ldr x0,qAdrsZoneBin
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ldr x0,qAdrsMessAffBindeb
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bl affichageMess
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ldr x0,qAdrsZoneConv
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bl affichageMess
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ldr x0,qAdrsMessAffBin
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bl affichageMess
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ldr x0,qAdrsZoneBin
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bl affichageMess
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ldr x0,qAdrszRetourLigne
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bl affichageMess
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/* other number */
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mov x5,50
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mov x0,x5
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ldr x1,qAdrsZoneConv
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bl conversion10S
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mov x0,x5
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ldr x1,qAdrsZoneBin
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bl conversion2 // binary conversion and display résult
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ldr x0,qAdrsZoneBin
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ldr x0,qAdrsMessAffBindeb
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bl affichageMess
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ldr x0,qAdrsZoneConv
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bl affichageMess
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ldr x0,qAdrsMessAffBin
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bl affichageMess
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ldr x0,qAdrsZoneBin
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bl affichageMess
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ldr x0,qAdrszRetourLigne
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bl affichageMess
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/* other number */
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mov x5,-1
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mov x0,x5
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ldr x1,qAdrsZoneConv
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bl conversion10S
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mov x0,x5
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ldr x1,qAdrsZoneBin
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bl conversion2 // binary conversion and display résult
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ldr x0,qAdrsZoneBin
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ldr x0,qAdrsMessAffBindeb
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bl affichageMess
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ldr x0,qAdrsZoneConv
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bl affichageMess
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ldr x0,qAdrsMessAffBin
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bl affichageMess
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ldr x0,qAdrsZoneBin
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bl affichageMess
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ldr x0,qAdrszRetourLigne
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bl affichageMess
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/* other number */
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mov x5,1
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mov x0,x5
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ldr x1,qAdrsZoneConv
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bl conversion10S
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mov x0,x5
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ldr x1,qAdrsZoneBin
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bl conversion2 // binary conversion and display résult
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ldr x0,qAdrsZoneBin
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ldr x0,qAdrsMessAffBindeb
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bl affichageMess
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ldr x0,qAdrsZoneConv
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bl affichageMess
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ldr x0,qAdrsMessAffBin
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bl affichageMess
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ldr x0,qAdrsZoneBin
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bl affichageMess
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ldr x0,qAdrszRetourLigne
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bl affichageMess
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100: // standard end of the program */
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mov x0, #0 // return code
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mov x8, #EXIT // request to exit program
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svc 0 // perform the system call
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qAdrsZoneConv: .quad sZoneConv
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qAdrsZoneBin: .quad sZoneBin
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qAdrsMessAffBin: .quad sMessAffBin
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qAdrsMessAffBindeb: .quad sMessAffBindeb
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qAdrszRetourLigne: .quad szRetourLigne
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/******************************************************************/
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/* register conversion in binary */
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/******************************************************************/
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/* x0 contains the register */
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/* x1 contains the address of receipt area */
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conversion2:
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stp x2,lr,[sp,-16]! // save registers
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stp x3,x4,[sp,-16]! // save registers
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clz x2,x0 // number of left zeros bits
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mov x3,64
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sub x2,x3,x2 // number of significant bits
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strb wzr,[x1,x2] // store 0 final
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sub x3,x2,1 // position counter of the written character
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2: // loop
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tst x0,1 // test first bit
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lsr x0,x0,#1 // shift right one bit
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bne 3f
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mov x4,#48 // bit = 0 => character '0'
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b 4f
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3:
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mov x4,#49 // bit = 1 => character '1'
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4:
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strb w4,[x1,x3] // character in reception area at position counter
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sub x3,x3,#1
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subs x2,x2,#1 // 0 bits ?
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bgt 2b // no! loop
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100:
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ldp x3,x4,[sp],16 // restaur 2 registres
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ldp x2,lr,[sp],16 // restaur 2 registres
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ret // retour adresse lr x30
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/********************************************************/
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/* File Include fonctions */
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/********************************************************/
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/* for this file see task include a file in language AArch64 assembly */
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.include "../includeARM64.inc"
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