Modify and assemble .s file

Question

Is it possible to modify and assemble the .s file which can be generated by Intel's C compiler? I know that it is possible with gcc via:

1. gcc -S file.c
2. modify file.s
3. as file.s -o file.o

However, if I try exactly the same with Intel's icc it will result in several errors and warnings. What am I missing here? Thanks.

Answer 1

The problem with the assembly language is that there is no standard syntax, the most popular 2 syntax used to write assembly are the AT&T and Intel one.

Guess which one is being used by gcc, by default, and which one by Intel .

I suggest to use Intel syntax under gcc too so you can use just 1 syntax.

An example on how to generate asm with Intel syntax starting from sourcecode in C

gcc -S -masm=intel source.c