### ------------------------------------------------------------------
### detecta.s
### Author: Bob Dondero
### A program to illustrate assembler functionality and machine
### language
### ------------------------------------------------------------------

        .section ".rodata"

cMessage:
        .asciz  "The char is A.\n"

### ------------------------------------------------------------------

        .section ".text"

        ## -----------------------------------------------------------
        ## int main(int argc, char *argv[])
        ## Read a char from stdin.  Write a message to stdout if it
        ## is the character 'A'.
        ## -----------------------------------------------------------

        .globl  main
        .type   main,@function

main:

        pushl   %ebp
        movl    %esp, %ebp

        ## iChar = getchar();
        call    getchar

        ## if (iChar != 'A') goto skip;
        cmpl    $'A', %eax
        jne     skip

        ## printf("The char is A.\n");
        pushl   $cMessage
        call    printf
        addl    $4, %esp

skip:

        ## return 0;
        movl    $0, %eax
        movl    %ebp, %esp
        popl    %ebp
        ret