Re: Calling libraries from assembler.

SoLo2 wrote:
> Hello!
> 
> 
> I have tried how simple it is to use
> system calls in Linux from assembler.
> Setting parameters in the registers
> eax/edx and then "int 0x80".
> 
> I would like to know it there
> is a similar, easy way of calling
> other libraries (specially X windows).
> 
> It should be as simple as giving
> the function name in ASCII ! :)
> 

On 32-bit x86:

	/* foo = func(arg1, arg2, arg3) */

	push arg3
	push arg2
	push arg1
	call func
	mov %eax,foo

On 64-bit x86:

	mov arg3,%rdx
	mov arg2,%rsi
	mov arg1,%rdi
	call func
	mov %rax,foo

	-hpa