#======================================================================
# helloname.s
# Fundamentals
# Calling Functions Using the C Calling Conventions
#======================================================================

   .equ MAX_NAME_LENGTH, 100

#======================================================================
   .section ".rodata"
#======================================================================

pcPrompt:
   .asciz "What is your name?  "

pcScanfFormat:
   .asciz "%s"

pcGreeting:
   .asciz "Hello %s.\n"

#======================================================================
   .section ".data"
#======================================================================

#======================================================================
   .section ".bss"
#======================================================================

pcName:
   .skip MAX_NAME_LENGTH

#======================================================================
   .section ".text"
#======================================================================

#----------------------------------------------------------------------
# int main(int argc, char *argv[])
#
# Read a name from stdin, and write a greeting that uses that name
# to stdout.
#
# Formal parameter offsets:
   .equ ARGC, 8
   .equ ARGV, 12
#----------------------------------------------------------------------

   .globl main
   .type main,@function

main:

   pushl %ebp
   movl  %esp, %ebp

   # printf("What is your name?  "); 
   pushl $pcPrompt
   call  printf
   addl  $4, %esp

   # scanf("%s", pcName);
   pushl $pcName
   pushl $pcScanfFormat
   call  scanf
   addl  $8, %esp

   # printf("Hello %s.\n", pcName); 
   pushl $pcName
   pushl $pcGreeting
   call  printf
   addl  $8, %esp

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