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authorJoakim Tjernlund <joakim.tjernlund@transmode.se>2007-02-04 21:25:42 +0000
committerJoakim Tjernlund <joakim.tjernlund@transmode.se>2007-02-04 21:25:42 +0000
commit8ceaf7c737b375d4d90afd8051d0b23aede22d96 (patch)
treeff4d050978a14ea794d7775462530495b67ada2b /libc
parent6c3524e1f00e4770d8683ca9282ca2d809e0ebc5 (diff)
Add support for PowerPC e500, libc part only.
Math support to be done. From Steve Papacharalambous, stevep@freescale.com
Diffstat (limited to 'libc')
-rw-r--r--libc/sysdeps/linux/Makefile.commonarch5
-rw-r--r--libc/sysdeps/linux/powerpc/Makefile.arch33
-rw-r--r--libc/sysdeps/linux/powerpc/bits/classic/fenv.h (renamed from libc/sysdeps/linux/powerpc/bits/fenv.h)0
-rw-r--r--libc/sysdeps/linux/powerpc/bits/classic/fenvinline.h (renamed from libc/sysdeps/linux/powerpc/bits/fenvinline.h)0
-rw-r--r--libc/sysdeps/linux/powerpc/bits/classic/mathdef.h (renamed from libc/sysdeps/linux/powerpc/bits/mathdef.h)0
-rw-r--r--libc/sysdeps/linux/powerpc/bits/classic/mathinline.h (renamed from libc/sysdeps/linux/powerpc/bits/mathinline.h)0
-rw-r--r--libc/sysdeps/linux/powerpc/bits/e500/fenv.h79
-rw-r--r--libc/sysdeps/linux/powerpc/bits/e500/fenvinline.h2
-rw-r--r--libc/sysdeps/linux/powerpc/bits/e500/mathdef.h84
-rw-r--r--libc/sysdeps/linux/powerpc/bits/e500/mathinline.h2
-rw-r--r--libc/sysdeps/linux/powerpc/classic/__longjmp.S (renamed from libc/sysdeps/linux/powerpc/__longjmp.S)0
-rw-r--r--libc/sysdeps/linux/powerpc/classic/fpu_control.h (renamed from libc/sysdeps/linux/powerpc/fpu_control.h)0
-rw-r--r--libc/sysdeps/linux/powerpc/classic/setjmp.S (renamed from libc/sysdeps/linux/powerpc/setjmp.S)0
-rw-r--r--libc/sysdeps/linux/powerpc/e500/__longjmp.S86
-rw-r--r--libc/sysdeps/linux/powerpc/e500/fenv_top.h136
-rw-r--r--libc/sysdeps/linux/powerpc/e500/fpu_control.h66
-rw-r--r--libc/sysdeps/linux/powerpc/e500/setjmp.S84
17 files changed, 577 insertions, 0 deletions
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