jump tables

    .file   "jmptab.c"
    .def    ___main;    .scl    2;  .type   32; .endef
    .section .rdata,"dr"
LC0:
    .ascii "Input: \0"
LC1:
    .ascii "a\0"
LC2:
    .ascii "b\0"
LC3:
    .ascii "c\0"
LC4:
    .ascii "default\0"
    .text
.globl _main
    .def    _main;  .scl    2;  .type   32; .endef
_main:
    pushl   %ebp
    movl    %esp, %ebp
    andl    $-16, %esp
    subl    $32, %esp
    call    ___main
    movl    $LC0, (%esp)
    call    _printf
    call    _getchar
    movb    %al, 31(%esp)
    movsbl  31(%esp), %eax
    cmpl    $98, %eax
    je  L4
    cmpl    $99, %eax
    je  L5
    cmpl    $97, %eax
    jne L7
L3:
    movl    $LC1, (%esp)
    call    _puts
    jmp L8
L4:
    movl    $LC2, (%esp)
    call    _puts
    jmp L8
L5:
    movl    $LC3, (%esp)
    call    _puts
    jmp L8
L7:
    movl    $LC4, (%esp)
    call    _puts
    nop
L8:
    leave
    ret
    .def    _puts;  .scl    2;  .type   32; .endef
    .def    _printf;    .scl    2;  .type   32; .endef
    .def    _getchar;   .scl    2;  .type   32; .endef