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authorTulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>2017-10-13 15:44:39 -0300
committerTulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>2017-10-13 15:44:39 -0300
commite8dbd6a36d8e4d30e736e28a364f7a4d1404079a (patch)
treeee545720ca4998dafd23ef68f8869bcdca02957b /sysdeps
parent179dcdb7af4983fd42824db748ee6cb05f8d71cf (diff)
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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.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/powerpc/fpu/math_private.h7
1 files changed, 7 insertions, 0 deletions
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