io_demo.s

    .file   "io_demo.c"
    .section    .rodata
    .align 2
.LC0:
    .string "Enter your initials, followed by your age: "
    .align 2
.LC1:
    .string "%c %c %c %d"
    .align 2
.LC2:
    .string "My initials are: %c%c%c and my age is %d.\n"
    .section    ".text"
    .align 2
    .globl main
    .type   main, @function
main:
    stwu 1,-32(1)
    mflr 0
    stw 0,36(1)
    stw 31,28(1)
    mr 31,1
    lis 9,.LC0@ha
    la 3,.LC0@l(9)
    crxor 6,6,6
    bl printf
    addi 8,31,9
    addi 10,31,10
    addi 9,31,12
    lis 7,.LC1@ha
    la 3,.LC1@l(7)
    addi 7,31,8
    mr 4,7
    mr 5,8
    mr 6,10
    mr 7,9
    crxor 6,6,6
    bl __isoc99_scanf
    lbz 9,8(31)
    rlwinm 9,9,0,0xff
    mr 7,9
    lbz 9,9(31)
    rlwinm 9,9,0,0xff
    mr 8,9
    lbz 9,10(31)
    rlwinm 9,9,0,0xff
    mr 10,9
    lwz 9,12(31)
    lis 6,.LC2@ha
    la 3,.LC2@l(6)
    mr 4,7
    mr 5,8
    mr 6,10
    mr 7,9
    crxor 6,6,6
    bl printf
    li 9,0
    mr 3,9
    addi 11,31,32
    lwz 0,4(11)
    mtlr 0
    lwz 31,-4(11)
    mr 1,11
    blr
    .size   main,.-main
    .ident  "GCC: (Gentoo 4.7.3-r1 p1.4, pie-0.5.5) 4.7.3"
    .section    .note.GNU-stack,"",@progbits