Add a qemu_irq_invert() shortcut for inverting a signal.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3485 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 2 insertions, 0 deletions

diff --git a/hw/irq.h b/hw/irq.h
index 652fd6abeb..2d1a3548b0 100644
--- a/hw/irq.h
+++ b/hw/irq.h
@@ -19,3 +19,5 @@ static inline void qemu_irq_lower(qemu_irq irq)
 /* Returns an array of N IRQs.  */
 qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n);
 
+/* Returns a new IRQ with opposite polarity.  */
+qemu_irq qemu_irq_invert(qemu_irq irq);