[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH ARM v6 01/14] mini-os: x86_64: make thread stacks 16-byte aligned
Thomas Leonard, le Wed 16 Jul 2014 12:07:41 +0100, a écrit : > Otherwise, passing doubles to varargs functions causes a crash. > > Signed-off-by: Thomas Leonard <talex5@xxxxxxxxx> Acked-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx> > --- > extras/mini-os/arch/x86/sched.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/extras/mini-os/arch/x86/sched.c b/extras/mini-os/arch/x86/sched.c > index 8a05b58..e4a3dc2 100644 > --- a/extras/mini-os/arch/x86/sched.c > +++ b/extras/mini-os/arch/x86/sched.c > @@ -107,6 +107,9 @@ struct thread* arch_create_thread(char *name, void > (*function)(void *), > thread->sp = (unsigned long)thread->stack + STACK_SIZE; > /* Save pointer to the thread on the stack, used by current macro */ > *((unsigned long *)thread->stack) = (unsigned long)thread; > + > + /* Must ensure that (%rsp + 8) is 16-byte aligned at the start of > thread_starter. */ > + thread->sp -= sizeof(unsigned long); > > stack_push(thread, (unsigned long) function); > stack_push(thread, (unsigned long) data); > -- > 2.0.1 > -- Samuel <m> argh, pi est plus grand que 2. Ca casse tout -+- #ens-mim -+- _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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