UMBC CMSC 313, Computer Organization & Assembly Language, Fall 2002, Section 0101

The Stack & C Functions I

Tuesday 10/08, 2002

Up]

Assigned Reading in Murdocca & Heuring:   

Assigned Reading in Neveln:   

Assigned:   

Due:   

Topics Covered:

• Recap subroutines calls.
• Recap CALL, RET, PUSH and POP instructions.
• Recursive subroutines.
• How the gcc compiler on a Linux/Pentium platform handles function calls. Extensive notes are available.

Programs shown:

• A simple recursive subroutine in assembly language: recurse.asm, recurse.txt.
• A simple C function converted to assembly language using gcc -S: cfunc.c, cfunc.s (AT&T style assembly), cfunc.asm (Intel style assembly), cfunc.txt.