Use macros to set and restore the mixer FPU mode

1 files changed, 11 insertions, 0 deletions

diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 4081508e..ca97bff0 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -907,6 +907,17 @@ typedef struct {
 } FPUCtl;
 void SetMixerFPUMode(FPUCtl *ctl);
 void RestoreFPUMode(const FPUCtl *ctl);
+#ifdef __GNUC__
+/* Use an alternate macro set with GCC to avoid accidental continue or break
+ * statements within the mixer mode.
+ */
+#define START_MIXER_MODE() __extension__({ FPUCtl _oldMode; SetMixerFPUMode(&_oldMode);
+#define END_MIXER_MODE() RestoreFPUMode(&_oldMode); })
+#else
+#define START_MIXER_MODE() do { FPUCtl _oldMode; SetMixerFPUMode(&_oldMode);
+#define END_MIXER_MODE() RestoreFPUMode(&_oldMode); } while(0)
+#endif
+#define LEAVE_MIXER_MODE() RestoreFPUMode(&_oldMode)
 
 
 typedef struct ll_ringbuffer ll_ringbuffer_t;