--- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-27
13:32 ---
(In reply to comment #3)
> If =A is for using edx:eax in 32 bits mode, what is it doing exactly in 64
> bits
> then? rdx:rax?
Just rax.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21249
--- Additional Comments From tfautre at pandora dot be 2005-04-27 13:30
---
Thanks for the code, it's working.
The inline rdtsc code was from an IBM article; and after reading the GCC doc on
=A, I must admit I was expecting it to work on x86_64 too.
"ASpecifies the `a' or `d' regis
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-27
13:11 ---
What do you mean, it is generating wrong code?
Actually you are using inline-asm wrong, try the following instead:
#define rdtsc(low,high) \
__asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))
This com
--- Additional Comments From tfautre at pandora dot be 2005-04-27 13:08
---
Created an attachment (id=8754)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8754&action=view)
Small test program that exibits the problem.
The problem becomes more obvious when the program is compiled wi
