Question

Translate the following C code into MIPS Assembly code, assuming Loop Variable k is in $s0 and initially containing 0 . Also assume base of array Arr is in $s3

while ( k < = 10 )

{

Arr[k] = k ;

k = k + 1;

}

Answer 1

1). ANSWER :

GIVENTHAT :

Converted Code:

main:
        str     fp, [sp, #-4]!
        add     fp, sp, #0
        sub     sp, sp, #12
.L3:
        ldr     r3, [fp, #-8]
        cmp     r3, #10
        bgt     .L2
        ldr     r3, [fp, #-8]
        lsl     r3, r3, #2
        sub     r2, fp, #4
        add     r3, r2, r3
        ldr     r2, [fp, #-8]
        str     r2, [r3, #-4]
        ldr     r3, [fp, #-8]
        add     r3, r3, #1
        str     r3, [fp, #-8]
        b       .L3
.L2:
        mov     r3, #0
        mov     r0, r3
        add     sp, fp, #0
        ldr     fp, [sp], #4
        bx      lr
__static_initialization_and_destruction_0(int, int):
        push    {fp, lr}
        add     fp, sp, #4
        sub     sp, sp, #8
        str     r0, [fp, #-8]
        str     r1, [fp, #-12]
        ldr     r3, [fp, #-8]
        cmp     r3, #1
        bne     .L7
        ldr     r3, [fp, #-12]
        ldr     r2, .L8
        cmp     r3, r2
        bne     .L7
        ldr     r0, .L8+4
        bl      std::ios_base::Init::Init() [complete object constructor]
        ldr     r2, .L8+8
        ldr     r1, .L8+12
        ldr     r0, .L8+4
        bl      __aeabi_atexit
.L7:
        nop
        sub     sp, fp, #4
        pop     {fp, pc}
.L8:
        .word   65535
        .word   _ZStL8__ioinit
        .word   __dso_handle
        .word   _ZNSt8ios_base4InitD1Ev
_GLOBAL__sub_I_main:
        push    {fp, lr}
        add     fp, sp, #4
        ldr     r1, .L11
        mov     r0, #1
        bl      __static_initialization_and_destruction_0(int, int)
        pop     {fp, pc}
.L11:
        .word   65535