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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Sorting-algorithms-Shell-sort/AArch64-Assembly/sorting-algorithms-shell-sort.aarch64 Normal file
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/* ARM assembly AARCH64 Raspberry PI 3B */
/* program shellSort64.s */
/*******************************************/
/* Constantes file */
/*******************************************/
/* for this file see task include a file in language AArch64 assembly*/
.include "../includeConstantesARM64.inc"
/*********************************/
/* Initialized data */
/*********************************/
.data
szMessSortOk: .asciz "Table sorted.\n"
szMessSortNok: .asciz "Table not sorted !!!!!.\n"
sMessResult: .asciz "Value : @ \n"
szCarriageReturn: .asciz "\n"
.align 4
TableNumber: .quad 1,3,6,2,5,9,10,8,4,7
//TableNumber: .quad 10,9,8,7,6,5,4,3,2,1
.equ NBELEMENTS, (. - TableNumber) / 8
/*********************************/
/* UnInitialized data */
/*********************************/
.bss
sZoneConv: .skip 24
/*********************************/
/* code section */
/*********************************/
.text
.global main
main: // entry of program
1:
ldr x0,qAdrTableNumber // address number table
mov x1,0 // not use in routine
mov x2,NBELEMENTS // number of élements
bl shellSort
ldr x0,qAdrTableNumber // address number table
bl displayTable
ldr x0,qAdrTableNumber // address number table
mov x1,#NBELEMENTS // number of élements
bl isSorted // control sort
cmp x0,#1 // sorted ?
beq 2f
ldr x0,qAdrszMessSortNok // no !! error sort
bl affichageMess
b 100f
2: // yes
ldr x0,qAdrszMessSortOk
bl affichageMess
100: // standard end of the program
mov x0,0 // return code
mov x8,EXIT // request to exit program
svc 0 // perform the system call
qAdrsZoneConv: .quad sZoneConv
qAdrszCarriageReturn: .quad szCarriageReturn
qAdrsMessResult: .quad sMessResult
qAdrTableNumber: .quad TableNumber
qAdrszMessSortOk: .quad szMessSortOk
qAdrszMessSortNok: .quad szMessSortNok
/******************************************************************/
/* control sorted table */
/******************************************************************/
/* x0 contains the address of table */
/* x1 contains the number of elements > 0 */
/* x0 return 0 if not sorted 1 if sorted */
isSorted:
stp x1,lr,[sp,-16]! // save registers
stp x2,x3,[sp,-16]! // save registers
stp x4,x5,[sp,-16]! // save registers
mov x2,0
ldr x4,[x0,x2,lsl 3]
1:
add x2,x2,1
cmp x2,x1
bge 99f
ldr x3,[x0,x2, lsl 3]
cmp x3,x4
blt 98f
mov x4,x3
b 1b
98:
mov x0,0 // error not sorted
b 100f
99:
mov x0,1 // sorted
100:
ldp x4,x5,[sp],16 // restaur 2 registers
ldp x2,x3,[sp],16 // restaur 2 registers
ldp x1,lr,[sp],16 // restaur 2 registers
ret // return to address lr x30
/***************************************************/
/* shell Sort */
/***************************************************/
/* x0 contains the address of table */
/* x1 contains the first element but not use !! */
/* this routine use first element at index zero !!! */
/* x2 contains the number of element */
shellSort:
stp x1,lr,[sp,-16]! // save registers
stp x2,x3,[sp,-16]! // save registers
stp x4,x5,[sp,-16]! // save registers
stp x6,x7,[sp,-16]! // save registers
sub x2,x2,1 // index last item
mov x1,x2 // init gap = last item
1: // start loop 1
lsr x1,x1,1 // gap = gap / 2
cbz x1,100f // if gap = 0 -> end
mov x3,x1 // init loop indice 1
2: // start loop 2
ldr x4,[x0,x3,lsl 3] // load first value
mov x5,x3 // init loop indice 2
3: // start loop 3
cmp x5,x1 // indice < gap
blt 4f // yes -> end loop 2
sub x6,x5,x1 // index = indice - gap
ldr x7,[x0,x6,lsl 3] // load second value
cmp x4,x7 // compare values
bge 4f
str x7,[x0,x5,lsl 3] // store if <
sub x5,x5,x1 // indice = indice - gap
b 3b // and loop
4: // end loop 3
str x4,[x0,x5,lsl 3] // store value 1 at indice 2
add x3,x3,1 // increment indice 1
cmp x3,x2 // end ?
ble 2b // no -> loop 2
b 1b // yes loop for new gap
100: // end function
ldp x6,x7,[sp],16 // restaur 2 registers
ldp x4,x5,[sp],16 // restaur 2 registers
ldp x2,x3,[sp],16 // restaur 2 registers
ldp x1,lr,[sp],16 // restaur 2 registers
ret // return to address lr x30
/******************************************************************/
/* Display table elements */
/******************************************************************/
/* x0 contains the address of table */
displayTable:
stp x1,lr,[sp,-16]! // save registers
stp x2,x3,[sp,-16]! // save registers
mov x2,x0 // table address
mov x3,0
1: // loop display table
ldr x0,[x2,x3,lsl #3]
ldr x1,qAdrsZoneConv // display value
bl conversion10 // call function
ldr x0,qAdrsMessResult
ldr x1,qAdrsZoneConv
bl strInsertAtCharInc // insert result at @ character
bl affichageMess // display message
add x3,x3,1
cmp x3,#NBELEMENTS - 1
ble 1b
ldr x0,qAdrszCarriageReturn
bl affichageMess
100:
ldp x2,x3,[sp],16 // restaur 2 registers
ldp x1,lr,[sp],16 // restaur 2 registers
ret // return to address lr x30
/********************************************************/
/* File Include fonctions */
/********************************************************/
/* for this file see task include a file in language AArch64 assembly */
.include "../includeARM64.inc"