Add support for PowerPC e500, libc part only.

Math support to be done.
From Steve Papacharalambous, stevep@freescale.com

4 files changed, 167 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/powerpc/bits/e500/fenv.h b/libc/sysdeps/linux/powerpc/bits/e500/fenv.h
new file mode 100644
index 000000000..41963da38
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/bits/e500/fenv.h
@@ -0,0 +1,79 @@
+/* Copyright (C) 2004 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+
+/* Define bits representing the exception.  We use the bit positions of
+   the appropriate bits in the SPEFSCR...  */
+enum
+  {
+    FE_INEXACT = 1 << (63 - 42),
+#define FE_INEXACT	FE_INEXACT
+    FE_INVALID = 1 << (63 - 43),
+#define FE_INVALID	FE_INVALID
+    FE_DIVBYZERO = 1 << (63 - 44),
+#define FE_DIVBYZERO	FE_DIVBYZERO
+    FE_UNDERFLOW = 1 << (63 - 45),
+#define FE_UNDERFLOW	FE_UNDERFLOW
+    FE_OVERFLOW = 1 << (63 - 46)
+#define FE_OVERFLOW	FE_OVERFLOW
+  };
+
+#define FE_ALL_EXCEPT \
+	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+/* The E500 support all of the four defined rounding modes.  We use
+   the bit pattern in the SPEFSCR as the values for the appropriate
+   macros.  */
+enum
+  {
+    FE_TONEAREST = 0,
+#define FE_TONEAREST	FE_TONEAREST
+    FE_TOWARDZERO = 1,
+#define FE_TOWARDZERO	FE_TOWARDZERO
+    FE_UPWARD = 2,
+#define FE_UPWARD	FE_UPWARD
+    FE_DOWNWARD = 3
+#define FE_DOWNWARD	FE_DOWNWARD
+  };
+
+/* Type representing exception flags.  */
+typedef unsigned int fexcept_t;
+
+typedef double fenv_t;
+
+/* If the default argument is used we use this value.  */
+extern const fenv_t __fe_dfl_env;
+#define FE_DFL_ENV	(&__fe_dfl_env)
+
+#ifdef __USE_GNU
+/* Floating-point environment where all exceptions are enabled.  Note that
+   this is not sufficient to give you SIGFPE.  */
+extern const fenv_t __fe_enabled_env;
+# define FE_ENABLED_ENV	(&__fe_enabled_env)
+
+/* Floating-point environment with all exceptions enabled.  Note that
+   just evaluating this value will set the processor into 'FPU
+   exceptions imprecise recoverable' mode, which may cause a significant
+   performance penalty (but have no other visible effect).  */
+extern const fenv_t *__fe_nomask_env (void);
+# define FE_NOMASK_ENV	(__fe_nomask_env ())
+#endif
diff --git a/libc/sysdeps/linux/powerpc/bits/e500/fenvinline.h b/libc/sysdeps/linux/powerpc/bits/e500/fenvinline.h
new file mode 100644
index 000000000..8dee09d18
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/bits/e500/fenvinline.h
@@ -0,0 +1,2 @@
+/* We don't need no stinking inline versions.  Life is hard enough as it
+   is with this hybrid soft/hard float business.  */
diff --git a/libc/sysdeps/linux/powerpc/bits/e500/mathdef.h b/libc/sysdeps/linux/powerpc/bits/e500/mathdef.h
new file mode 100644
index 000000000..4a698e96c
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/bits/e500/mathdef.h
@@ -0,0 +1,84 @@
+/* Copyright (C) 1997,1998,1999,2000,2003 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#if !defined _MATH_H && !defined _COMPLEX_H
+# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
+#endif
+
+
+/* FIXME! This file describes properties of the compiler, not the machine;
+   it should not be part of libc!
+
+   FIXME! This file does not deal with the -fshort-double option of
+   gcc! */
+
+#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
+# define _MATH_H_MATHDEF	1
+
+# ifdef __GNUC__
+#  if __STDC__ == 1
+
+/* In GNU or ANSI mode, gcc leaves `float' expressions as-is.  */
+typedef float float_t;		/* `float' expressions are evaluated as
+				   `float'.  */
+typedef double double_t;	/* `double' expressions are evaluated as
+				   `double'.  */
+
+/* Define `INFINITY' as value of type `float'.  */
+# ifndef __UCLIBC__
+#   define INFINITY	HUGE_VALF
+# endif
+
+#  else
+
+/* For `gcc -traditional', `float' expressions are evaluated as `double'. */
+typedef double float_t;		/* `float' expressions are evaluated as
+				   `double'.  */
+typedef double double_t;	/* `double' expressions are evaluated as
+				   `double'.  */
+
+/* Define `INFINITY' as value of type `float'.  */
+# ifndef __UCLIBC__
+#   define INFINITY	HUGE_VALF
+#  endif
+
+#  endif
+# else
+
+/* Wild guess at types for float_t and double_t. */
+typedef double float_t;
+typedef double double_t;
+
+/* Define `INFINITY' as value of type `float'.  */
+# ifndef __UCLIBC__
+#  define INFINITY	HUGE_VALF
+#  endif
+
+# endif
+
+/* The values returned by `ilogb' for 0 and NaN respectively.  */
+# define FP_ILOGB0	(-2147483647)
+# define FP_ILOGBNAN	(2147483647)
+
+#endif	/* ISO C99 */
+
+#ifndef __NO_LONG_DOUBLE_MATH
+/* Signal that we do not really have a `long double'.  The disables the
+   declaration of all the `long double' function variants.  */
+# define __NO_LONG_DOUBLE_MATH	1
+#endif
diff --git a/libc/sysdeps/linux/powerpc/bits/e500/mathinline.h b/libc/sysdeps/linux/powerpc/bits/e500/mathinline.h
new file mode 100644
index 000000000..ebd8ec4a3
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/bits/e500/mathinline.h
@@ -0,0 +1,2 @@
+/* Inline?  You've got to be kidding me.  We'll take the library functions
+   any day.  */