Reputation: 67968
I'm looking at some assembly stuff. So, pushl bar
is the same as subl $4, %esp
movl bar, ($esp)
.
Few questions:
1) What is special about the %esp
register?
2) What does the parenthesis around the register mean?
3) pushl bar
would meaning having bar on top of the stack, right? So what is happening when I do subl $4
? Does that mean I am creating am empty space on top of the stack for me to move bar
into?
Upvotes: 0
Views: 129
Reputation: 579
ESP is the stack pointer - it always points to the "top" of the stack
The brackets mean "the memory pointed at by" ESP rather than the ESP register itself
Upvotes: 1