47 lines
2.0 KiB
Plaintext
47 lines
2.0 KiB
Plaintext
/* ARM assembly AARCH64 Raspberry PI 3B */
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/* program nullobj64.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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szCarriageReturn: .asciz "\n"
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szMessResult: .asciz "Value is null.\n" // message result
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qPtrObjet: .quad 0 // objet pointer
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/*******************************************/
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/* UnInitialized data */
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/*******************************************/
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.bss
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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 x0,qAdrqPtrObjet // load pointer address
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ldr x0,[x0] // load pointer value
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cbnz x0,100f // is null ?
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ldr x0,qAdrszMessResult // yes -> display message
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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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qAdrszMessResult: .quad szMessResult
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qAdrszCarriageReturn: .quad szCarriageReturn
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qAdrqPtrObjet: .quad qPtrObjet
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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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