Transfer in MIPS char * strtoupper(char s[]) { char c; c = s[0]; /* empty string...

Transfer in MIPS

char * strtoupper(char s[]) {

char c;

c = s[0];

      /* empty string */

      if (c == 0)
            return s;

/* convert the first character to upper case*/

if (c >= ‘a’ && d <= ‘z’) { c -= 32;

s[0] = c; }

/* convert the remaining characters*/

      strtoupper(s + 1);

return s; }

Expert Solution

strtoupper:
        .frame  $fp,40,$31              # vars= 8, regs= 2/0, args= 16, gp= 8
        .mask   0xc0000000,-4
        .fmask  0x00000000,0
        .set    noreorder
        .cpload $25
        .set    nomacro
        addiu   $sp,$sp,-40
        sw      $31,36($sp)
        sw      $fp,32($sp)
        move    $fp,$sp
        .cprestore      16
        movz    $31,$31,$0
        sw      $4,40($fp)
        lw      $2,40($fp)
        nop
        lbu     $2,0($2)
        nop
        sb      $2,24($fp)
        lb      $2,24($fp)
        nop
        bne     $2,$0,$L2
        nop

        lw      $2,40($fp)
        b       $L3
        nop

$L2:
        lb      $2,24($fp)
        nop
        slt     $2,$2,97
        bne     $2,$0,$L4
        nop

        lb      $2,24($fp)
        nop
        slt     $2,$2,123
        beq     $2,$0,$L4
        nop

        lbu     $2,24($fp)
        nop
        addiu   $2,$2,-32
        andi    $2,$2,0x00ff
        sb      $2,24($fp)
        lw      $2,40($fp)
        lbu     $3,24($fp)
        nop
        sb      $3,0($2)
$L4:
        lw      $2,40($fp)
        nop
        addiu   $2,$2,1
        move    $4,$2
        lw      $2,%got(strtoupper)($28)
        nop
        move    $25,$2
        .reloc  1f,R_MIPS_JALR,strtoupper
1:      jalr    $25
        nop

        lw      $28,16($fp)
        lw      $2,40($fp)
$L3:
        move    $sp,$fp
        lw      $31,36($sp)
        lw      $fp,32($sp)
        addiu   $sp,$sp,40
        j       $31
        nop

venereology answered 9 months ago

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