/* ARM assembly Raspberry PI  */
/*  program cptAdn.s   */

/************************************/
/* Constantes                       */
/************************************/
/* for this file see task include a file in language ARM assembly*/
.include "../constantes.inc"
.equ LIMIT,    50
.equ SHIFT,     11

/************************************/
/* Initialized data                 */
/************************************/
.data
szMessResult:         .asciz "Result: "
szDNA1:               .ascii "CGTAAAAAATTACAACGTCCTTTGGCTATCTCTTAAACTCCTGCTAAATG"
                      .ascii "CTCGTGCTTTCCAATTATGTAAGCGTTCCGAGACGGGGTGGTCGATTCTG"
                      .ascii "AGGACAAAGGTCAAGATGGAGCGCATCGAACGCAATAAGGATCATTTGAT"
                      .ascii "GGGACGTTTCGTCGACAAAGTCTTGTTTCGAGAGTAACGGCTACCGTCTT"
                      .ascii "CGATTCTGCTTATAACACTATGTTCTTATGAAATGGATGTTCTGAGTTGG"
                      .ascii "TCAGTCCCAATGTGCGGGGTTTCTTTTAGTACGTCGGGAGTGGTATTATA"
                      .ascii "TTTAATTTTTCTATATAGCGATCTGTATTTAAGCAATTCATTTAGGTTAT"
                      .ascii "CGCCGCGATGCTCGGTTCGGACCGCCAAGCATCTGGCTCCACTGCTAGTG"
                      .ascii "TCCTAAATTTGAATGGCAAACACAAATAAGATTTAGCAATTCGTGTAGAC"
                      .asciz "GACCGGGGACTTGCATGATGGGAGCAGCTTTGTTAAACTACGAACGTAAT"

szCarriageReturn:     .asciz "\n"
szMessStart:          .asciz "Program 32 bits start.\n"
szMessCounterA:       .asciz "Base A : "
szMessCounterC:       .asciz "Base C : "
szMessCounterG:       .asciz "Base G : "
szMessCounterT:       .asciz "Base T : "
szMessTotal:          .asciz "Total  : "
/************************************/
/* UnInitialized data               */
/************************************/
.bss
sZoneConv:            .skip 24
sPrintLine:           .skip LIMIT + SHIFT + 2
/************************************/
/*  code section                    */
/************************************/
.text
.global main
main:                      @ entry of program
    ldr r0,iAdrszMessStart
    bl affichageMess

    ldr r0,iAdrszDNA1
    bl printDNA
    ldr r0,iAdrszDNA1
    bl countBase


100:                       @ standard end of the program
    mov r0, #0             @ return code
    mov r7, #EXIT          @ request to exit program
    svc 0                  @ perform the system call
iAdrszDNA1:               .int szDNA1
iAdrsZoneConv:            .int sZoneConv
iAdrszMessResult:         .int szMessResult
iAdrszCarriageReturn:     .int szCarriageReturn
iAdrszMessStart:          .int szMessStart
/***************************************************/
/*   count dna line and print                  */
/***************************************************/
/* r0 contains dna string address */
printDNA:
    push {r1-r8,lr}      @ save registers
    mov r8,r0            @ save address
    mov r4,#0            @ counter
    mov r3,#0            @ index stone
    mov r4,#0
    mov r5,#1
    ldr r7,iAdrsPrintLine
1:
    ldrb r6,[r8,r3]      @ load byte of dna
    cmp r6,#0            @ end string ?
    beq 4f
    add r1,r7,#SHIFT
    strb r6,[r1,r4]      @ store byte in display line
    add r4,r4,#1         @ increment index line
    cmp r4,#LIMIT        @ end line ?
    blt 3f
    mov r0,r5            @ convert decimal counter base
    mov r1,r7
    bl conversion10
    mov r0,#0            @ Zero final
    add r1,r7,#LIMIT
    add r1,r1,#SHIFT + 1
    strb r0,[r1]
    mov r0,r7            @ line display
    bl affichageMess
    ldr r0,iAdrszCarriageReturn
    bl affichageMess
    add r5,r5,#LIMIT     @ add line size to counter
    mov r4,#0            @ and init line index
3:
    add r3,r3,#1         @ increment index string
    b 1b                 @ and loop
4:                       @ display end line if line contains base
    cmp r4,#0
    beq 100f
    mov r0,r5
    mov r1,r7
    bl conversion10
    mov r0,#0               @ Zero final
    add r1,r7,r4
    add r1,r1,#SHIFT
    strb r0,[r1]
    mov r0,r7               @ last line display
    bl affichageMess
    ldr r0,iAdrszCarriageReturn
    bl affichageMess
 100:
    pop {r1-r8,pc}
 iAdrsPrintLine:      .int sPrintLine
 /***************************************************/
/*   count bases                                    */
/***************************************************/
/* r0 contains dna string address */
countBase:
    push {r1-r6,lr}      @ save registers
    mov r2,#0            @ string index
    mov r3,#0            @ A counter
    mov r4,#0            @ C counter
    mov r5,#0            @  G counter
    mov r6,#0            @  T counter
1:
    ldrb r1,[r0,r2]      @ load byte of dna
    cmp r1,#0            @ end string ?
    beq 2f
    cmp r1,#'A'
    addeq r3,r3,#1
    cmp r1,#'C'
    addeq r4,r4,#1
    cmp r1,#'G'
    addeq r5,r5,#1
    cmp r1,#'T'
    addeq r6,r6,#1

    add r2,r2,#1
    b 1b
2:
    mov r0,r3            @ convert decimal counter A
    ldr r1,iAdrsZoneConv
    bl conversion10
    ldr r0,iAdrszMessCounterA
    bl affichageMess
    ldr r0,iAdrsZoneConv
    bl affichageMess
    ldr r0,iAdrszCarriageReturn
    bl affichageMess
    mov r0,r4            @ convert decimal counter C
    ldr r1,iAdrsZoneConv
    bl conversion10
    ldr r0,iAdrszMessCounterC
    bl affichageMess
    ldr r0,iAdrsZoneConv
    bl affichageMess
    ldr r0,iAdrszCarriageReturn
    bl affichageMess
    mov r0,r5            @ convert decimal counter G
    ldr r1,iAdrsZoneConv
    bl conversion10
    ldr r0,iAdrszMessCounterG
    bl affichageMess
    ldr r0,iAdrsZoneConv
    bl affichageMess
    ldr r0,iAdrszCarriageReturn
    bl affichageMess
    mov r0,r6            @ convert decimal counter T
    ldr r1,iAdrsZoneConv
    bl conversion10
    ldr r0,iAdrszMessCounterT
    bl affichageMess
    ldr r0,iAdrsZoneConv
    bl affichageMess
    ldr r0,iAdrszCarriageReturn
    bl affichageMess

    add r0,r3,r4            @ convert decimal total
    add r0,r0,r5
    add r0,r0,r6
    ldr r1,iAdrsZoneConv
    bl conversion10
    ldr r0,iAdrszMessTotal
    bl affichageMess
    ldr r0,iAdrsZoneConv
    bl affichageMess
    ldr r0,iAdrszCarriageReturn
    bl affichageMess
100:
    pop {r1-r6,pc}
iAdrszMessCounterA:     .int szMessCounterA
iAdrszMessCounterC:     .int szMessCounterC
iAdrszMessCounterG:     .int szMessCounterG
iAdrszMessCounterT:     .int szMessCounterT
iAdrszMessTotal:        .int szMessTotal
/***************************************************/
/*      ROUTINES INCLUDE                           */
/***************************************************/
/* for this file see task include a file in language ARM assembly*/
.include "../affichage.inc"