Add support for PowerPC e500, libc part only.

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

21 files changed, 612 insertions, 1 deletions

diff --git a/Makefile.in b/Makefile.in
index eb76a9db6..a3d740f7c 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -57,7 +57,7 @@ headers: include/bits/uClibc_config.h
 	$(Q)$(MAKE) headers-y
 	$(Q)\
 	set -e; \
-	if [ -f libc/sysdeps/linux/$(TARGET_ARCH)/fpu_control.h ] ; then \
+	if [ -e libc/sysdeps/linux/$(TARGET_ARCH)/fpu_control.h ] ; then \
 		$(LN) -fs ../libc/sysdeps/linux/$(TARGET_ARCH)/fpu_control.h include/ ; \
 	else \
 		$(LN) -fs ../libc/sysdeps/linux/common/fpu_control.h include/ ; \
diff --git a/Rules.mak b/Rules.mak
index 294690867..3d3578e0f 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -353,6 +353,10 @@ CFLAGS := -include $(top_builddir)include/libc-symbols.h \
 	$(XWARNINGS) $(CPU_CFLAGS) $(SSP_CFLAGS) \
 	-fno-builtin -nostdinc -I$(top_builddir)include -I.
 
+ifneq ($(strip $(UCLIBC_EXTRA_CFLAGS)),"")
+CFLAGS += $(subst ",, $(UCLIBC_EXTRA_CFLAGS))
+endif
+
 LDADD_LIBFLOAT=
 ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y)
 # If -msoft-float isn't supported, we want an error anyway.
diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in
index b0d1504e9..2b1644e14 100644
--- a/extra/Configs/Config.in
+++ b/extra/Configs/Config.in
@@ -1411,6 +1411,12 @@ config CROSS_COMPILER_PREFIX
 	  example, if you run 'arm-linux-uclibc-gcc' to compile something, 
 	  then enter 'arm-linux-uclibc-' here.
 
+config UCLIBC_EXTRA_CFLAGS
+	string "Enter any extra CFLAGS to use to build uClibc"
+	default ""
+	help
+	  Add any additional CFLAGS to be used to build uClibc.
+
 config DODEBUG
 	bool "Build uClibc with debugging symbols"
 	default n
diff --git a/extra/Configs/Config.powerpc b/extra/Configs/Config.powerpc
index fab79b135..383b41a6d 100644
--- a/extra/Configs/Config.powerpc
+++ b/extra/Configs/Config.powerpc
@@ -17,3 +17,27 @@ config ARCH_CFLAGS
 
 config LIBGCC_CFLAGS
 	string
+
+choice
+	prompt "Target Processor Type"
+	default CONFIG_CLASSIC
+	help
+	  This is the processor core of your CPU. This information is used for
+	  determining the correct assembler instructions to use for the core.
+          The default is to build for a classic powerpc.
+
+config CONFIG_CLASSIC
+	bool "CLASSIC"
+        help
+          Classic powerpc architecture.
+
+config CONFIG_E500
+	bool "E500"
+        help
+          e500 v1 and v2 core.
+
+endchoice
+
+
+
+
diff --git a/libc/sysdeps/linux/Makefile.commonarch b/libc/sysdeps/linux/Makefile.commonarch
index ea4ba53b3..4ce8452f0 100644
--- a/libc/sysdeps/linux/Makefile.commonarch
+++ b/libc/sysdeps/linux/Makefile.commonarch
@@ -23,6 +23,11 @@ objclean-y     += arch_objclean
 arch_objclean:
 	$(RM) $(ARCH_OUT)/*.{o,os} $(CTOR_TARGETS) $(CRTS)
 
+ifneq ($(ARCH_FPU_HEADERS),)
+headers-y += arch_fpu_headers
+headers_clean-y += arch_fpu_headers_clean
+endif
+
 ifneq ($(ARCH_HEADERS),)
 
 ARCH_HEADERS_IN  := $(patsubst %,../libc/sysdeps/linux/$(TARGET_ARCH)/%,$(ARCH_HEADERS))
diff --git a/libc/sysdeps/linux/powerpc/Makefile.arch b/libc/sysdeps/linux/powerpc/Makefile.arch
index eaa1cb7f8..0e3799f81 100644
--- a/libc/sysdeps/linux/powerpc/Makefile.arch
+++ b/libc/sysdeps/linux/powerpc/Makefile.arch
@@ -11,4 +11,37 @@ SSRC := \
 	__longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S brk.S \
 	clone.S __uClibc_syscall.S syscall.S vfork.S
 
+ARCH_FPU_HEADERS := fpu_control.h
+ARCH_DIR := libc/sysdeps/linux/powerpc
+
+arch_fpu_headers:
+ifeq ($(CONFIG_E500),y)
+	$(LN) -fs e500/fpu_control.h $(ARCH_DIR)
+	$(LN) -fs e500/setjmp.S $(ARCH_DIR)
+	$(LN) -fs e500/__longjmp.S $(ARCH_DIR)
+	$(LN) -fs e500/fenv.h $(ARCH_DIR)/bits
+	$(LN) -fs e500/fenvinline.h $(ARCH_DIR)/bits
+	$(LN) -fs e500/mathinline.h $(ARCH_DIR)/bits
+	$(LN) -fs e500/mathdef.h $(ARCH_DIR)/bits
+	$(LN) -fs ../$(ARCH_DIR)/e500/fenv_top.h $(top_builddir)include/fenv.h
+else
+	$(LN) -fs classic/fpu_control.h $(ARCH_DIR)
+	$(LN) -fs classic/setjmp.S $(ARCH_DIR)
+	$(LN) -fs classic/__longjmp.S $(ARCH_DIR)
+	$(LN) -fs classic/fenv.h $(ARCH_DIR)/bits
+	$(LN) -fs classic/fenvinline.h $(ARCH_DIR)/bits
+	$(LN) -fs classic/mathinline.h $(ARCH_DIR)/bits
+	$(LN) -fs classic/mathdef.h $(ARCH_DIR)/bits
+endif
+
+arch_fpu_headers_clean:
+	$(RM) $(ARCH_DIR)/fpu_control.h
+	$(RM) $(ARCH_DIR)/setjmp.S
+	$(RM) $(ARCH_DIR)/__longjmp.S
+	$(RM) $(ARCH_DIR)/bits/fenv.h
+	$(RM) $(ARCH_DIR)/bits/fenvinline.h
+	$(RM) $(ARCH_DIR)/bits/mathinline.h
+	$(RM) $(ARCH_DIR)/bits/mathdef.h
+	$(RM) include/fenv.h
+
 include $(top_srcdir)libc/sysdeps/linux/Makefile.commonarch
diff --git a/libc/sysdeps/linux/powerpc/bits/fenv.h b/libc/sysdeps/linux/powerpc/bits/classic/fenv.h
index 8509b4b0c..8509b4b0c 100644
--- a/libc/sysdeps/linux/powerpc/bits/fenv.h
+++ b/libc/sysdeps/linux/powerpc/bits/classic/fenv.h
diff --git a/libc/sysdeps/linux/powerpc/bits/fenvinline.h b/libc/sysdeps/linux/powerpc/bits/classic/fenvinline.h
index f7700a49e..f7700a49e 100644
--- a/libc/sysdeps/linux/powerpc/bits/fenvinline.h
+++ b/libc/sysdeps/linux/powerpc/bits/classic/fenvinline.h
diff --git a/libc/sysdeps/linux/powerpc/bits/mathdef.h b/libc/sysdeps/linux/powerpc/bits/classic/mathdef.h
index a076fb6d7..a076fb6d7 100644
--- a/libc/sysdeps/linux/powerpc/bits/mathdef.h
+++ b/libc/sysdeps/linux/powerpc/bits/classic/mathdef.h
diff --git a/libc/sysdeps/linux/powerpc/bits/mathinline.h b/libc/sysdeps/linux/powerpc/bits/classic/mathinline.h
index 87985a744..87985a744 100644
--- a/libc/sysdeps/linux/powerpc/bits/mathinline.h
+++ b/libc/sysdeps/linux/powerpc/bits/classic/mathinline.h
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.  */
diff --git a/libc/sysdeps/linux/powerpc/__longjmp.S b/libc/sysdeps/linux/powerpc/classic/__longjmp.S
index 83f094c15..83f094c15 100644
--- a/libc/sysdeps/linux/powerpc/__longjmp.S
+++ b/libc/sysdeps/linux/powerpc/classic/__longjmp.S
diff --git a/libc/sysdeps/linux/powerpc/fpu_control.h b/libc/sysdeps/linux/powerpc/classic/fpu_control.h
index 2df9ba0e7..2df9ba0e7 100644
--- a/libc/sysdeps/linux/powerpc/fpu_control.h
+++ b/libc/sysdeps/linux/powerpc/classic/fpu_control.h
diff --git a/libc/sysdeps/linux/powerpc/setjmp.S b/libc/sysdeps/linux/powerpc/classic/setjmp.S
index 3bdf6cbfe..3bdf6cbfe 100644
--- a/libc/sysdeps/linux/powerpc/setjmp.S
+++ b/libc/sysdeps/linux/powerpc/classic/setjmp.S
diff --git a/libc/sysdeps/linux/powerpc/e500/__longjmp.S b/libc/sysdeps/linux/powerpc/e500/__longjmp.S
new file mode 100644
index 000000000..8161f869d
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/e500/__longjmp.S
@@ -0,0 +1,86 @@
+/* longjmp for PowerPC e500
+   Copyright (C) 1995, 1996, 1997, 1999, 2000, 2004
+   Free Software Foundation, Inc.
+   Contributed by Aldy Hernandez <aldyh@redhat.com>.
+   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.  */
+
+#include <features.h>
+#include "ppc_asm.h"
+#define _ASM
+#define _SETJMP_H
+#include <bits/setjmp.h>
+
+
+#if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__
+#define FP(x...) x
+#else
+#define FP(x...)
+#endif
+
+.globl      __longjmp;
+.type      __longjmp, @function;
+.align  2;
+
+__longjmp:    
+	lwz r1,(JB_GPR1*4)(r3)
+	lwz r2,(JB_GPR2*4)(r3)
+	lwz r0,(JB_LR*4)(r3)
+	lwz r14,((JB_GPRS+0)*4)(r3)
+FP(	evldd r14,((JB_FPRS+0*2)*4)(r3))
+	lwz r15,((JB_GPRS+1)*4)(r3)
+FP(	evldd r15,((JB_FPRS+1*2)*4)(r3))
+	lwz r16,((JB_GPRS+2)*4)(r3)
+FP(	evldd r16,((JB_FPRS+2*2)*4)(r3))
+	lwz r17,((JB_GPRS+3)*4)(r3)
+FP(	evldd r17,((JB_FPRS+3*2)*4)(r3))
+	lwz r18,((JB_GPRS+4)*4)(r3)
+FP(	evldd r18,((JB_FPRS+4*2)*4)(r3))
+	lwz r19,((JB_GPRS+5)*4)(r3)
+FP(	evldd r19,((JB_FPRS+5*2)*4)(r3))
+	lwz r20,((JB_GPRS+6)*4)(r3)
+FP(	evldd r20,((JB_FPRS+6*2)*4)(r3))
+	mtlr r0
+	lwz r21,((JB_GPRS+7)*4)(r3)
+FP(	evldd r21,((JB_FPRS+7*2)*4)(r3))
+	lwz r22,((JB_GPRS+8)*4)(r3)
+FP(	evldd r22,((JB_FPRS+8*2)*4)(r3))
+	lwz r0,(JB_CR*4)(r3)
+	lwz r23,((JB_GPRS+9)*4)(r3)
+FP(	evldd r23,((JB_FPRS+9*2)*4)(r3))
+	lwz r24,((JB_GPRS+10)*4)(r3)
+FP(	evldd r24,((JB_FPRS+10*2)*4)(r3))
+	lwz r25,((JB_GPRS+11)*4)(r3)
+FP(	evldd r25,((JB_FPRS+11*2)*4)(r3))
+	mtcrf 0xFF,r0
+	lwz r26,((JB_GPRS+12)*4)(r3)
+FP(	evldd r26,((JB_FPRS+12*2)*4)(r3))
+	lwz r27,((JB_GPRS+13)*4)(r3)
+FP(	evldd r27,((JB_FPRS+13*2)*4)(r3))
+	lwz r28,((JB_GPRS+14)*4)(r3)
+FP(	evldd r28,((JB_FPRS+14*2)*4)(r3))
+	lwz r29,((JB_GPRS+15)*4)(r3)
+FP(	evldd r29,((JB_FPRS+15*2)*4)(r3))
+	lwz r30,((JB_GPRS+16)*4)(r3)
+FP(	evldd r30,((JB_FPRS+16*2)*4)(r3))
+	lwz r31,((JB_GPRS+17)*4)(r3)
+FP(	evldd r31,((JB_FPRS+17*2)*4)(r3))
+	mr r3,r4
+	blr
+.size     __longjmp,.-__longjmp
+
+libc_hidden_def(__longjmp)
diff --git a/libc/sysdeps/linux/powerpc/e500/fenv_top.h b/libc/sysdeps/linux/powerpc/e500/fenv_top.h
new file mode 100644
index 000000000..8a06f024e
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/e500/fenv_top.h
@@ -0,0 +1,136 @@
+/* Copyright (C) 1997, 1999, 2000 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.  */
+
+/*
+ * ISO C99 7.6: Floating-point environment	<fenv.h>
+ */
+
+#ifndef _FENV_H
+#define _FENV_H	1
+
+#include <features.h>
+
+/* Get the architecture dependend definitions.  The following definitions
+   are expected to be done:
+
+   fenv_t	type for object representing an entire floating-point
+		environment
+
+   FE_DFL_ENV	macro of type pointer to fenv_t to be used as the argument
+		to functions taking an argument of type fenv_t; in this
+		case the default environment will be used
+
+   fexcept_t	type for object representing the floating-point exception
+		flags including status associated with the flags
+
+   The following macros are defined iff the implementation supports this
+   kind of exception.
+   FE_INEXACT		inexact result
+   FE_DIVBYZERO		division by zero
+   FE_UNDERFLOW		result not representable due to underflow
+   FE_OVERFLOW		result not representable due to overflow
+   FE_INVALID		invalid operation
+
+   FE_ALL_EXCEPT	bitwise OR of all supported exceptions
+
+   The next macros are defined iff the appropriate rounding mode is
+   supported by the implementation.
+   FE_TONEAREST		round to nearest
+   FE_UPWARD		round toward +Inf
+   FE_DOWNWARD		round toward -Inf
+   FE_TOWARDZERO	round toward 0
+*/
+#include <bits/fenv.h>
+
+__BEGIN_DECLS
+
+/* Floating-point exception handling.  */
+
+/* Clear the supported exceptions represented by EXCEPTS.  */
+extern int feclearexcept (int __excepts) __THROW;
+
+/* Store implementation-defined representation of the exception flags
+   indicated by EXCEPTS in the object pointed to by FLAGP.  */
+extern int fegetexceptflag (fexcept_t *__flagp, int __excepts) __THROW;
+
+/* Raise the supported exceptions represented by EXCEPTS.  */
+extern int feraiseexcept (int __excepts) __THROW;
+
+/* Set complete status for exceptions indicated by EXCEPTS according to
+   the representation in the object pointed to by FLAGP.  */
+extern int fesetexceptflag (__const fexcept_t *__flagp, int __excepts) __THROW;
+
+/* Determine which of subset of the exceptions specified by EXCEPTS are
+   currently set.  */
+extern int fetestexcept (int __excepts) __THROW;
+
+
+/* Rounding control.  */
+
+/* Get current rounding direction.  */
+extern int fegetround (void) __THROW;
+
+/* Establish the rounding direction represented by ROUND.  */
+extern int fesetround (int __rounding_direction) __THROW;
+
+
+/* Floating-point environment.  */
+
+/* Store the current floating-point environment in the object pointed
+   to by ENVP.  */
+extern int fegetenv (fenv_t *__envp) __THROW;
+
+/* Save the current environment in the object pointed to by ENVP, clear
+   exception flags and install a non-stop mode (if available) for all
+   exceptions.  */
+extern int feholdexcept (fenv_t *__envp) __THROW;
+
+/* Establish the floating-point environment represented by the object
+   pointed to by ENVP.  */
+extern int fesetenv (__const fenv_t *__envp) __THROW;
+
+/* Save current exceptions in temporary storage, install environment
+   represented by object pointed to by ENVP and raise exceptions
+   according to saved exceptions.  */
+extern int feupdateenv (__const fenv_t *__envp) __THROW;
+
+
+/* Include optimization.  */
+#ifdef __OPTIMIZE__
+# include <bits/fenvinline.h>
+#endif
+
+#ifdef __USE_GNU
+
+/* Enable individual exceptions.  Will not enable more exceptions than
+   EXCEPTS specifies.  Returns the previous enabled exceptions if all
+   exceptions are successfully set, otherwise returns -1.  */
+extern int feenableexcept (int __excepts) __THROW;
+
+/* Disable individual exceptions.  Will not disable more exceptions than
+   EXCEPTS specifies.  Returns the previous enabled exceptions if all
+   exceptions are successfully disabled, otherwise returns -1.  */
+extern int fedisableexcept (int __excepts) __THROW;
+
+/* Return enabled exceptions.  */
+extern int fegetexcept (void) __THROW;
+#endif
+
+__END_DECLS
+
+#endif /* fenv.h */
diff --git a/libc/sysdeps/linux/powerpc/e500/fpu_control.h b/libc/sysdeps/linux/powerpc/e500/fpu_control.h
new file mode 100644
index 000000000..10e8506ad
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/e500/fpu_control.h
@@ -0,0 +1,66 @@
+/* FPU control word definitions.  PowerPC e500 version.
+   Copyright (C) 1996, 1997, 1998, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Aldy Hernandez <aldyh@redhat.com>, 2004.
+
+   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 _FPU_CONTROL_H
+#define _FPU_CONTROL_H
+
+/* rounding control */
+#define _FPU_RC_NEAREST 0x00   /* RECOMMENDED */
+#define _FPU_RC_DOWN    0x03
+#define _FPU_RC_UP      0x02
+#define _FPU_RC_ZERO    0x01
+
+#define _FPU_MASK_NI  0x04 /* non-ieee mode */
+
+/* masking of interrupts */
+#define _FPU_MASK_ZM  0x10 /* zero divide */
+#define _FPU_MASK_OM  0x40 /* overflow */
+#define _FPU_MASK_UM  0x20 /* underflow */
+#define _FPU_MASK_XM  0x08 /* inexact */
+#define _FPU_MASK_IM  0x80 /* invalid operation */
+
+#define _FPU_RESERVED 0xff3fff7f /* These bits are reserved are not changed. */
+
+/* The fdlibm code requires no interrupts for exceptions.  */
+#define _FPU_DEFAULT  0x00000000 /* Default value.  */
+
+/* IEEE:  same as above, but (some) exceptions;
+   we leave the 'inexact' exception off.
+ */
+#define _FPU_IEEE     0x000003c0
+
+/* Type of the control word.  */
+typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__)));
+
+/* Macros for accessing the hardware control word.  */
+#define _FPU_GETCW(__cw) ({ \
+  unsigned int env; \
+  asm volatile ("mfspefscr %0" : "=r" (env)); \
+  (__cw) = env; })
+#define _FPU_SETCW(__cw) ({ \
+  unsigned int env = __cw; \
+  asm volatile ("mtspefscr %0" : : "r" (env)); })
+
+#if 0
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+#endif
+
+#endif /* _FPU_CONTROL_H */
diff --git a/libc/sysdeps/linux/powerpc/e500/setjmp.S b/libc/sysdeps/linux/powerpc/e500/setjmp.S
new file mode 100644
index 000000000..6b3bbfbd6
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/e500/setjmp.S
@@ -0,0 +1,84 @@
+/* setjmp for PowerPC e500.
+   Copyright (C) 1995, 1996, 1997, 1999, 2000, 2004
+   Free Software Foundation, Inc.
+   Contributed by Aldy Hernandez <aldyh@redhat.com>.
+   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.  */
+
+#include <features.h>
+#include "ppc_asm.h"
+#define _ASM
+#define _SETJMP_H
+#include <bits/setjmp.h>
+
+#if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__
+#define FP(x...) x
+#else
+#define FP(x...)
+#endif
+
+.globl      __sigsetjmp;
+.type      __sigsetjmp, @function;
+.align  2;        
+
+__sigsetjmp:   
+	stw  r1,(JB_GPR1*4)(3)
+	mflr r0
+	stw  r2,(JB_GPR2*4)(3)
+	stw  r14,((JB_GPRS+0)*4)(3)
+FP(	evstdd r14,((JB_FPRS+0*2)*4)(3))
+	stw  r0,(JB_LR*4)(3)
+	stw  r15,((JB_GPRS+1)*4)(3)
+FP(	evstdd r15,((JB_FPRS+1*2)*4)(3))
+	mfcr r0
+	stw  r16,((JB_GPRS+2)*4)(3)
+FP(	evstdd r16,((JB_FPRS+2*2)*4)(3))
+	stw  r0,(JB_CR*4)(3)
+	stw  r17,((JB_GPRS+3)*4)(3)
+FP(	evstdd r17,((JB_FPRS+3*2)*4)(3))
+	stw  r18,((JB_GPRS+4)*4)(3)
+FP(	evstdd r18,((JB_FPRS+4*2)*4)(3))
+	stw  r19,((JB_GPRS+5)*4)(3)
+FP(	evstdd r19,((JB_FPRS+5*2)*4)(3))
+	stw  r20,((JB_GPRS+6)*4)(3)
+FP(	evstdd r20,((JB_FPRS+6*2)*4)(3))
+	stw  r21,((JB_GPRS+7)*4)(3)
+FP(	evstdd r21,((JB_FPRS+7*2)*4)(3))
+	stw  r22,((JB_GPRS+8)*4)(3)
+FP(	evstdd r22,((JB_FPRS+8*2)*4)(3))
+	stw  r23,((JB_GPRS+9)*4)(3)
+FP(	evstdd r23,((JB_FPRS+9*2)*4)(3))
+	stw  r24,((JB_GPRS+10)*4)(3)
+FP(	evstdd r24,((JB_FPRS+10*2)*4)(3))
+	stw  r25,((JB_GPRS+11)*4)(3)
+FP(	evstdd r25,((JB_FPRS+11*2)*4)(3))
+	stw  r26,((JB_GPRS+12)*4)(3)
+FP(	evstdd r26,((JB_FPRS+12*2)*4)(3))
+	stw  r27,((JB_GPRS+13)*4)(3)
+FP(	evstdd r27,((JB_FPRS+13*2)*4)(3))
+	stw  r28,((JB_GPRS+14)*4)(3)
+FP(	evstdd r28,((JB_FPRS+14*2)*4)(3))
+	stw  r29,((JB_GPRS+15)*4)(3)
+FP(	evstdd r29,((JB_FPRS+15*2)*4)(3))
+	stw  r30,((JB_GPRS+16)*4)(3)
+FP(	evstdd r30,((JB_FPRS+16*2)*4)(3))
+	stw  r31,((JB_GPRS+17)*4)(3)
+FP(	evstdd r31,((JB_FPRS+17*2)*4)(3))
+
+	b __sigjmp_save@local
+
+.size     __sigsetjmp,.-__sigsetjmp