[powerpc] fenv_private.h clean up

fenv_private.h includes unused functions, magic macro constants, and
some replicated common code fragments.

Remove unused functions, replace magic constants with constants from
fenv_libc.h, and refactor replicated code.

Suggested-by: Paul E. Murphy <murphyp@linux.ibm.com>
Reviewed-By: Paul E Murphy <murphyp@linux.ibm.com>

1 files changed, 2 insertions, 15 deletions

diff --git a/sysdeps/powerpc/fpu/feupdateenv.c b/sysdeps/powerpc/fpu/feupdateenv.c
index 931de60fa3..d5c7394252 100644
--- a/sysdeps/powerpc/fpu/feupdateenv.c
+++ b/sysdeps/powerpc/fpu/feupdateenv.c
@@ -20,8 +20,6 @@
 #include <fenv_libc.h>
 #include <fpu_control.h>
 
-#define _FPU_MASK_ALL (_FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM | _FPU_MASK_XM | _FPU_MASK_IM)
-
 int
 __feupdateenv (const fenv_t *envp)
 {
@@ -36,19 +34,8 @@ __feupdateenv (const fenv_t *envp)
      unchanged.  */
   new.l = (old.l & 0xffffffff1fffff00LL) | (new.l & 0x1ff80fff);
 
-  /* If the old env has no enabled exceptions and the new env has any enabled
-     exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits.  This will put
-     the hardware into "precise mode" and may cause the FPU to run slower on
-     some hardware.  */
-  if ((old.l & _FPU_MASK_ALL) == 0 && (new.l & _FPU_MASK_ALL) != 0)
-    (void) __fe_nomask_env_priv ();
-
-  /* If the old env had any enabled exceptions and the new env has no enabled
-     exceptions, then mask SIGFPE in the MSR FE0/FE1 bits.  This may allow the
-     FPU to run faster because it always takes the default action and can not
-     generate SIGFPE. */
-  if ((old.l & _FPU_MASK_ALL) != 0 && (new.l & _FPU_MASK_ALL) == 0)
-    (void)__fe_mask_env ();
+  __TEST_AND_EXIT_NON_STOP (old.l, new.l);
+  __TEST_AND_ENTER_NON_STOP (old.l, new.l);
 
   /* Atomically enable and raise (if appropriate) exceptions set in `new'. */
   fesetenv_register (new.fenv);