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| author | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | 2017-10-13 15:44:39 -0300 |
|---|---|---|
| committer | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | 2017-10-13 15:44:39 -0300 |
| commit | e8dbd6a36d8e4d30e736e28a364f7a4d1404079a (patch) | |
| tree | ee545720ca4998dafd23ef68f8869bcdca02957b | |
| parent | 179dcdb7af4983fd42824db748ee6cb05f8d71cf (diff) | |
| download | glibc-e8dbd6a36d8e4d30e736e28a364f7a4d1404079a.tar.gz glibc-e8dbd6a36d8e4d30e736e28a364f7a4d1404079a.tar.xz glibc-e8dbd6a36d8e4d30e736e28a364f7a4d1404079a.zip | |
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.
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | sysdeps/powerpc/fpu/math_private.h | 7 |
2 files changed, 11 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 500d104652..4cc53012b2 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2017-10-13 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> + [BZ #22189] + * sysdeps/powerpc/fpu/math_private.h (math_opt_barrier): + (math_force_eval): Add powerpc version. + [BZ #22142] * stdio-common/tst-printf.c (fp_test): Add tests for DBL_MAX and -DBL_MAX. 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 |