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CS 456 - Systems Programming
Spring 2024
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Displaying ./code/asm/helloworld-args.asm
; Hello World Program (Passing arguments from the command line)
; Compile with: nasm -f elf helloworld-args.asm
; Link with (64 bit systems require elf_i386 option): ld -m elf_i386 helloworld-args.o -o helloworld-args
; Run with: ./helloworld-args
%include 'functions.asm'
SECTION .text
global _start
_start:
pop ecx ; first value on the stack is the number of arguments
nextArg:
cmp ecx, 0h ; check to see if we have any arguments left
jz noMoreArgs ; if zero flag is set jump to noMoreArgs label (jumping over the end of the loop)
pop eax ; pop the next argument off the stack
call sprintLF ; call our print with linefeed function
dec ecx ; decrease ecx (number of arguments left) by 1
jmp nextArg ; jump to nextArg label
noMoreArgs:
call quit
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