96 lines
3.5 KiB
Text
96 lines
3.5 KiB
Text
/* ARM assembly Raspberry PI */
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/* program sha1-1.s */
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/* use with library openssl */
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/* link with gcc option -lcrypto -lssl */
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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 SHA_DIGEST_LENGTH, 20
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/*******************************************/
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/* Fichier des macros */
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/********************************************/
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.include "../../ficmacros.s"
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/*********************************/
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/* Initialized data */
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/*********************************/
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.data
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szMessRosetta: .asciz "Rosetta Code"
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.equ LGMESSROSETTA, . - szMessRosetta - 1
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szCarriageReturn: .asciz "\n"
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szMessSup64: .ascii "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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.ascii "abcdefghijklmnopqrstuvwxyz"
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.asciz "1234567890AZERTYUIOP"
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.equ LGMESSSUP64, . - szMessSup64 - 1
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szMessTest2: .asciz "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
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.equ LGMESSTEST2, . - szMessTest2 - 1
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/*********************************/
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/* UnInitialized data */
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/*********************************/
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.bss
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.align 4
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szMessResult: .skip 24
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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,iAdrszMessRosetta
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mov r1,#LGMESSROSETTA
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ldr r2,iAdrszMessResult
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bl SHA1 @ appel fonction openssl
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ldr r0,iAdrszMessResult
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bl displaySHA1
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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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iAdrszMessRosetta: .int szMessRosetta
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iAdrszCarriageReturn: .int szCarriageReturn
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iAdrszMessResult: .int szMessResult
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iAdrsZoneConv: .int sZoneConv
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iAdrszMessSup64: .int szMessSup64
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iAdrszMessTest2: .int szMessTest2
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/******************************************************************/
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/* display hash SHA1 */
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/******************************************************************/
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/* r0 contains the address of hash */
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displaySHA1:
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push {r1-r3,lr} @ save registres
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mov r3,r0
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mov r2,#0
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1:
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ldr r0,[r3,r2,lsl #2] @ load 4 bytes
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rev r0,r0 @ reverse bytes
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ldr r1,iAdrsZoneConv
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bl conversion16 @ conversion hexa
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ldr r0,iAdrsZoneConv
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bl affichageMess
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add r2,r2,#1
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cmp r2,#SHA_DIGEST_LENGTH / 4
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blt 1b @ and loop
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ldr r0,iAdrszCarriageReturn
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bl affichageMess @ display message
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100:
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pop {r1-r3,lr} @ restaur registers
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bx lr @ return
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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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