From: Andreas Schwab <schwab@linux-m68k.org>
Date: Wed, 26 Oct 2011 09:34:30 +0000 (+0200)
Subject: m68k: add optimized math_opt_barrier and math_force_eval
X-Git-Tag: glibc-2.16-ports-before-merge~344
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=290c9bd53bd0e4e7ae66fbc1c33d8a0e87e5f829;p=thirdparty%2Fglibc.git

m68k: add optimized math_opt_barrier and math_force_eval
---

diff --git a/ChangeLog.m68k b/ChangeLog.m68k
index 7b2688eed7f..09de15987b0 100644
--- a/ChangeLog.m68k
+++ b/ChangeLog.m68k
@@ -1,5 +1,7 @@
 2011-10-26  Andreas Schwab  <schwab@linux-m68k.org>
 
+	* sysdeps/m68k/m680x0/fpu/math_private.h: New file.
+
 	* sysdeps/m68k/m680x0/fpu/sincostab.c: New file.
 
 2011-10-23  Andreas Schwab  <schwab@linux-m68k.org>
diff --git a/sysdeps/m68k/m680x0/fpu/math_private.h b/sysdeps/m68k/m680x0/fpu/math_private.h
new file mode 100644
index 00000000000..3793cff2034
--- /dev/null
+++ b/sysdeps/m68k/m680x0/fpu/math_private.h
@@ -0,0 +1,19 @@
+#ifndef _MATH_PRIVATE_H
+
+#define math_opt_barrier(x) \
+({ __typeof (x) __x;					\
+   __asm ("" : "=f" (__x) : "0" (x));			\
+   __x; })
+#define math_force_eval(x) \
+do							\
+  {							\
+    __typeof (x) __x = (x);				\
+    if (sizeof (x) <= sizeof (double))			\
+      __asm __volatile ("" : : "m" (__x));		\
+    else						\
+      __asm __volatile ("" : : "f" (__x));		\
+  }							\
+while (0)
+
+#include <math/math_private.h>
+#endif