From e8dbd6a36d8e4d30e736e28a364f7a4d1404079a Mon Sep 17 00:00:00 2001
From: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
Date: Fri, 13 Oct 2017 15:44:39 -0300
Subject: powerpc: Avoid putting floating point values in memory [BZ #22189]

	[BZ #22189]
	* sysdeps/powerpc/fpu/math_private.h (math_opt_barrier):
	(math_force_eval): Add powerpc version.
---
 sysdeps/powerpc/fpu/math_private.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'sysdeps')

diff --git a/sysdeps/powerpc/fpu/math_private.h b/sysdeps/powerpc/fpu/math_private.h
index 396fd0562e..472182d297 100644
--- a/sysdeps/powerpc/fpu/math_private.h
+++ b/sysdeps/powerpc/fpu/math_private.h
@@ -23,6 +23,13 @@
 #include <ldsodefs.h>
 #include <dl-procinfo.h>
 #include <fenv_private.h>
+
+/* Avoid putting floating point values in memory.  */
+# define math_opt_barrier(x)					\
+  ({ __typeof (x) __x = (x); __asm ("" : "+dwa" (__x)); __x; })
+# define math_force_eval(x)						\
+  ({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "dwa" (__x)); })
+
 #include_next <math_private.h>
 
 #if defined _ARCH_PWR9 && __HAVE_DISTINCT_FLOAT128
-- 
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