why gcc 4.x default reserve 8 bytes for stack on linux when calling a method?
- by nikcname
as a beginner of asm, I am checking gcc -S generated asm code to learn.
why gcc 4.x default reserve 8 bytes for stack when calling a method?
func18 is the empty function with no return no param no local var defined.
I can't figure out why 8 bytes is reserved here (neither any forum/site mention for the reason, ppl seems take it for granted)
is it for the %ebp just push? or return type?! many thx!
.globl _func18
_func18:
pushl %ebp
movl %esp, %ebp
subl $8, %esp
.text
