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[PATCH 3/4] Set fpcsr register which read again
- From: Nobuhiro Iwamatsu <iwamatsu at nigauri dot org>
- To: libc-alpha at sourceware dot org
- Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri dot org>
- Date: Thu, 5 Apr 2012 08:23:29 +0900
- Subject: [PATCH 3/4] Set fpcsr register which read again
- References: <1333581811-29266-1-git-send-email-iwamatsu@nigauri.org>
2012-04-04 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
* sysdeps/sh/sh4/fpu/fegetenv.c (fegetenv): Set fpscr register which
read again.
* sysdeps/sh/sh4/fpu/ftestexcept.c: Likewise.
---
sysdeps/sh/sh4/fpu/fegetenv.c | 6 +++++-
sysdeps/sh/sh4/fpu/ftestexcept.c | 3 +++
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/sysdeps/sh/sh4/fpu/fegetenv.c b/sysdeps/sh/sh4/fpu/fegetenv.c
index 68687dc..49e499f 100644
--- a/sysdeps/sh/sh4/fpu/fegetenv.c
+++ b/sysdeps/sh/sh4/fpu/fegetenv.c
@@ -1,5 +1,5 @@
/* Store current floating-point environment.
- Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -24,6 +24,10 @@ fegetenv (fenv_t *envp)
{
unsigned long int temp;
_FPU_GETCW (temp);
+ /* When read fpscr, this was initialized.
+ We need to rewrite value of temp. */
+ _FPU_SETCW (temp);
+
envp->__fpscr = temp;
return 0;
diff --git a/sysdeps/sh/sh4/fpu/ftestexcept.c b/sysdeps/sh/sh4/fpu/ftestexcept.c
index 9e0bfc5..c2e1772 100644
--- a/sysdeps/sh/sh4/fpu/ftestexcept.c
+++ b/sysdeps/sh/sh4/fpu/ftestexcept.c
@@ -26,6 +26,9 @@ fetestexcept (int excepts)
/* Get current exceptions. */
_FPU_GETCW (temp);
+ /* When read fpscr, this was initialized.
+ We need to rewrite value of temp. */
+ _FPU_SETCW (temp);
return temp & excepts & FE_ALL_EXCEPT;
}
--
1.7.9.5