2007-02-14 Patrick Mansfield <patmans@us.ibm.com>

        Add a floating point environment for SPU (cell):

        * configure.host: add libm_machine_dir=spu.
        * libm/machine/configure: Add spu.
        * libm/machine/configure.in: regenerated with spu added.
        * libc/machine/spu/include/fenv.h: New file.
        * libc/machine/spu/sys/fenv.h: Ditto.
        * libm/machine/spu/Makefile.am: Ditto.
        * libm/machine/spu/Makefile.in: Ditto.
        * libm/machine/spu/aclocal.m4: Ditto.
        * libm/machine/spu/configure: Ditto.
        * libm/machine/spu/configure.in: Ditto.
        * libm/machine/spu/fe_dfl_env.c: Ditto.
        * libm/machine/spu/feclearexcept.c: Ditto.
        * libm/machine/spu/fegetenv.c: Ditto.
        * libm/machine/spu/fegetexceptflag.c: Ditto.
        * libm/machine/spu/fegetround.c: Ditto.
        * libm/machine/spu/feholdexcept.c: Ditto.
        * libm/machine/spu/feraiseexcept.c: Ditto.
        * libm/machine/spu/fesetenv.c: Ditto.
        * libm/machine/spu/fesetexceptflag.c: Ditto.
        * libm/machine/spu/fesetround.c: Ditto.
        * libm/machine/spu/fetestexcept.c: Ditto.
        * libm/machine/spu/feupdateenv.c: Ditto.
        * libm/machine/spu/headers/feclearexcept.h: Ditto.
        * libm/machine/spu/headers/fefpscr.h: Ditto.
        * libm/machine/spu/headers/fegetenv.h: Ditto.
        * libm/machine/spu/headers/fegetexceptflag.h: Ditto.
        * libm/machine/spu/headers/fegetround.h: Ditto.
        * libm/machine/spu/headers/feholdexcept.h: Ditto.
        * libm/machine/spu/headers/feraiseexcept.h: Ditto.
        * libm/machine/spu/headers/fesetenv.h: Ditto.
        * libm/machine/spu/headers/fesetexceptflag.h: Ditto.
        * libm/machine/spu/headers/fesetround.h: Ditto.
        * libm/machine/spu/headers/fetestexcept.h: Ditto.
        * libm/machine/spu/headers/feupdateenv.h: Ditto.

2 files changed, 208 insertions, 0 deletions

diff --git a/newlib/libc/machine/spu/include/fenv.h b/newlib/libc/machine/spu/include/fenv.h
new file mode 100644
index 000000000..6252c99aa
--- /dev/null
+++ b/newlib/libc/machine/spu/include/fenv.h
@@ -0,0 +1,64 @@
+/*
+  (C) Copyright 2006, 2007
+  International Business Machines Corporation,
+  Sony Computer Entertainment, Incorporated,
+  Toshiba Corporation,
+
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+    * Neither the names of the copyright holders nor the names of their
+  contributors may be used to endorse or promote products derived from this
+  software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _FENV_H
+#define _FENV_H
+
+#include <sys/fenv.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Exception */
+void feclearexcept(int excepts);
+void fegetexceptflag(fexcept_t *flagp, int excepts);
+void feraiseexcept(int excepts);
+void fesetexceptflag(const fexcept_t *flagp, int excepts);
+int fetestexcept(int excepts);
+
+/* Rounding mode */
+int fegetround(void);
+int fesetround(int rounding_mode);
+
+/* Float environment */
+void fegetenv(fenv_t *envp);
+int feholdexcept(fenv_t *envp);
+void fesetenv(const fenv_t *envp);
+void feupdateenv(const fenv_t *envp);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/newlib/libc/machine/spu/sys/fenv.h b/newlib/libc/machine/spu/sys/fenv.h
new file mode 100644
index 000000000..e74fa96c4
--- /dev/null
+++ b/newlib/libc/machine/spu/sys/fenv.h
@@ -0,0 +1,144 @@
+/*
+  (C) Copyright 2006, 2007
+  International Business Machines Corporation,
+  Sony Computer Entertainment, Incorporated,
+  Toshiba Corporation,
+
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+    * Neither the names of the copyright holders nor the names of their
+  contributors may be used to endorse or promote products derived from this
+  software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef _SYS_FENV_H
+#define _SYS_FENV_H
+
+/*
+ * The exception macros are such that the functions to pack/unpack them
+ * will map a 32 bit fenv_t from/to the 128 bit fpscr.
+ *
+ * Suffixes:
+ * _SNGL: single precision
+ * _DBL:  double precision
+ * _N:    element number, no suffix for element 0.
+ */
+
+#define FE_OVERFLOW_SNGL	0x08000000
+#define FE_UNDERFLOW_SNGL	0x04000000
+#define FE_DIFF_SNGL		0x02000000
+#define FE_DIVBYZERO_SNGL	0x00000040
+
+#define FE_OVERFLOW_SNGL_1	0x00040000
+#define FE_UNDERFLOW_SNGL_1	0x00020000
+#define FE_DIFF_SNGL_1		0x00010000
+#define FE_DIVBYZERO_SNGL_1	0x00000020
+
+#define FE_OVERFLOW_SNGL_2	0x00000200
+#define FE_UNDERFLOW_SNGL_2	0x00000100
+#define FE_DIFF_SNGL_2		0x00000080
+#define FE_DIVBYZERO_SNGL_2	0x00000010
+
+#define FE_OVERFLOW_SNGL_3	0x00000004
+#define FE_UNDERFLOW_SNGL_3	0x00000002
+#define FE_DIFF_SNGL_3		0x00000001
+#define FE_DIVBYZERO_SNGL_3	0x00000008
+
+#define FE_ALL_EXCEPT_SNGL	(FE_OVERFLOW_SNGL | FE_UNDERFLOW_SNGL \
+				| FE_DIFF_SNGL | FE_DIVBYZERO_SNGL)
+#define FE_ALL_EXCEPT_SNGL_1	(FE_OVERFLOW_SNGL_1 | FE_UNDERFLOW_SNGL_1 \
+				| FE_DIFF_SNGL_1 | FE_DIVBYZERO_SNGL_1)
+#define FE_ALL_EXCEPT_SNGL_2	(FE_OVERFLOW_SNGL_2 | FE_UNDERFLOW_SNGL_2 \
+				| FE_DIFF_SNGL_2 | FE_DIVBYZERO_SNGL_2)
+#define FE_ALL_EXCEPT_SNGL_3	(FE_OVERFLOW_SNGL_3 | FE_UNDERFLOW_SNGL_3 \
+				| FE_DIFF_SNGL_3 | FE_DIVBYZERO_SNGL_3)
+
+#define FE_OVERFLOW_DBL		0x01000000
+#define FE_UNDERFLOW_DBL	0x00800000
+#define FE_INEXACT_DBL		0x00400000
+#define FE_INVALID_DBL		0x00200000
+#define FE_NC_NAN_DBL 		0x00100000
+#define FE_NC_DENORM_DBL	0x00080000
+
+#define FE_OVERFLOW_DBL_1	0x00008000
+#define FE_UNDERFLOW_DBL_1	0x00004000
+#define FE_INEXACT_DBL_1	0x00002000
+#define FE_INVALID_DBL_1	0x00001000
+#define FE_NC_NAN_DBL_1 	0x00000800
+#define FE_NC_DENORM_DBL_1 	0x00000400
+
+#define FE_ALL_EXCEPT_DBL	(FE_OVERFLOW_DBL | FE_UNDERFLOW_DBL | \
+				FE_INEXACT_DBL | FE_INVALID_DBL | \
+				FE_NC_NAN_DBL | FE_NC_DENORM_DBL)
+#define FE_ALL_EXCEPT_DBL_1	(FE_OVERFLOW_DBL_1 | FE_UNDERFLOW_DBL_1 | \
+				FE_INEXACT_DBL_1 | FE_INVALID_DBL_1 | \
+				FE_NC_NAN_DBL_1 | FE_NC_DENORM_DBL_1)
+
+#define FE_ALL_EXCEPT	        (FE_ALL_EXCEPT_SNGL | FE_ALL_EXCEPT_SNGL_1 | \
+				FE_ALL_EXCEPT_SNGL_2 | FE_ALL_EXCEPT_SNGL_3 | \
+				FE_ALL_EXCEPT_DBL | FE_ALL_EXCEPT_DBL_1)
+
+/*
+ * Warning: some of these are single and some double precision only,
+ * because of the hardware implementation.
+ */
+#define FE_DIVBYZERO		(FE_DIVBYZERO_SNGL | FE_DIVBYZERO_SNGL_1 | \
+				FE_DIVBYZERO_SNGL_2 | FE_DIVBYZERO_SNGL_3)
+#define FE_INEXACT		(FE_INEXACT_DBL | FE_INEXACT_DBL_1)
+#define FE_INVALID		(FE_INVALID_DBL | FE_INVALID_DBL_1)
+#define FE_NC_NAN		(FE_NC_NAN_DBL | FE_NC_NAN_DBL_1)
+#define FE_NC_DENORM		(FE_NC_DENORM_DBL | FE_NC_DENORM_DBL_1)
+
+/*
+ * __FE_ROUND_ELE_n values are set so that they can easily be used as a
+ * mask when setting the fpscr. These tell us whether we are setting the
+ * round mode for a specific element (double precision floating point
+ * only, so there are only two elements).
+ */
+#define __FE_ROUND_ELE_0	0xc00
+#define __FE_ROUND_ELE_1	0x300
+
+/*
+ * The following map directly to round values in the fpscr.
+ */
+#define __FE_SPU_TONEAREST	0
+#define __FE_SPU_TOWARDZERO	1
+#define __FE_SPU_UPWARD		2
+#define __FE_SPU_DOWNWARD	3
+
+#define FE_TONEAREST	(__FE_ROUND_ELE_0 | (__FE_SPU_TONEAREST << 2))
+#define FE_TOWARDZERO	(__FE_ROUND_ELE_0 | (__FE_SPU_TOWARDZERO << 2))
+#define FE_UPWARD	(__FE_ROUND_ELE_0 | (__FE_SPU_UPWARD << 2))
+#define FE_DOWNWARD	(__FE_ROUND_ELE_0 | (__FE_SPU_DOWNWARD << 2))
+
+#define FE_TONEAREST_1	(__FE_ROUND_ELE_1 | __FE_SPU_TONEAREST)
+#define FE_TOWARDZERO_1	(__FE_ROUND_ELE_1 | __FE_SPU_TOWARDZERO)
+#define FE_UPWARD_1	(__FE_ROUND_ELE_1 | __FE_SPU_UPWARD)
+#define FE_DOWNWARD_1	(__FE_ROUND_ELE_1 | __FE_SPU_DOWNWARD)
+
+typedef unsigned int fexcept_t;
+typedef unsigned int fenv_t;
+
+extern const fenv_t __fe_dfl_env;
+#define FE_DFL_ENV	(&__fe_dfl_env)
+
+#endif /* fenv.h */