--- Comment #4 from ramiro dot polla at gmail dot com 2010-07-18 22:08
---
That won't work in this case. If I subtract anything from rsp inside the inline
asm, the local variable relative to f will no longer be valid. Notice where gcc
put it:
21: ff 54 24 f8 callq *-0x8
--- Comment #3 from jakub at gcc dot gnu dot org 2010-07-18 13:31 ---
You need to in the inline asm subtract 128 from rsp, do the call, then add it
back.
--
jakub at gcc dot gnu dot org changed:
What|Removed |Added
-
--- Comment #2 from ramiro dot polla at gmail dot com 2010-07-18 05:14
---
Thanks. Is there anything that can be done in the code to say that is not a
leaf function, or at least to tell gcc that a call is being made inside the
inline asm?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi
--- Comment #1 from pinskia at gcc dot gnu dot org 2010-07-18 04:40 ---
Well this is called the red zone as GCC assumes anything that does not call a
function is a leaf function.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44975
