libm_sh: Move fenv functions into sh4 sub-folder

Indeed fenv funxtions are SH4 specific, so move them into
an SH4 specific sub-folder.

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

3 files changed, 77 insertions, 0 deletions

diff --git a/libm/sh/sh4/Makefile.arch b/libm/sh/sh4/Makefile.arch
new file mode 100644
index 000000000..122d84da2
--- /dev/null
+++ b/libm/sh/sh4/Makefile.arch
@@ -0,0 +1,22 @@
+# Makefile for uClibc
+#
+# Copyright (c) 2007, 2010  STMicroelectronics Ltd
+#
+# Author(s): Carmelo Amoroso <carmelo.amoroso@st.com>
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+#
+
+ifeq ($(UCLIBC_HAS_FENV),y)
+libm_ARCH_SRC:=$(wildcard $(libm_SUBARCH_DIR)/*.c)
+libm_ARCH_OBJ:=$(patsubst $(libm_SUBARCH_DIR)/%.c,$(libm_SUBARCH_OUT)/%.o,$(libm_ARCH_SRC))
+endif
+
+libm_ARCH_OBJS:=$(libm_ARCH_OBJ)
+
+ifeq ($(DOPIC),y)
+libm-a-y+=$(libm_ARCH_OBJS:.o=.os)
+else
+libm-a-y+=$(libm_ARCH_OBJS)
+endif
+libm-so-y+=$(libm_ARCH_OBJS:.o=.os)
+
diff --git a/libm/sh/sh4/feholdexcpt.c b/libm/sh/sh4/feholdexcpt.c
new file mode 100644
index 000000000..70b51e8dd
--- /dev/null
+++ b/libm/sh/sh4/feholdexcpt.c
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright (c) 2007  STMicroelectronics Ltd
+ * Filippo Arcidiacono (filippo.arcidiacono@st.com)
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ *
+ * Taken from glibc 2.6
+ *
+ */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+feholdexcept (fenv_t *envp)
+{
+  unsigned long int temp;
+
+  /* Store the environment.  */
+  _FPU_GETCW (temp);
+  envp->__fpscr = temp;
+
+  /* Now set all exceptions to non-stop.  */
+  temp &= ~FE_ALL_EXCEPT;
+  _FPU_SETCW (temp);
+
+  return 1;
+}
diff --git a/libm/sh/sh4/fesetenv.c b/libm/sh/sh4/fesetenv.c
new file mode 100644
index 000000000..c5cfc1d51
--- /dev/null
+++ b/libm/sh/sh4/fesetenv.c
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright (c) 2007  STMicroelectronics Ltd
+ * Filippo Arcidiacono (filippo.arcidiacono@st.com)
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ *
+ * Taken from glibc 2.6
+ *
+ */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetenv (const fenv_t *envp)
+{
+  if (envp == FE_DFL_ENV)
+      _FPU_SETCW (_FPU_DEFAULT);
+  else
+    {
+      unsigned long int temp = envp->__fpscr;
+      _FPU_SETCW (temp);
+    }
+  return 0;
+}