>From talking with others, there appears to be a problem with function calls in inline asm on x86_64: the call clobbers the first 8 bytes of the stack red zone, which GCC is allowed to use for other data in the function. This is a problem even if the function being called doesn't use the stack, because "call" itself does use the stack. Besides the extremely hacky sequence of: sub esp, 128 call func add esp, 128 Is there a way to tell gcc not to use the red zone in a function, or that part of the red zone is going to be clobbered by the inline assembly code? Jason
