(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

18 files changed, 773 insertions, 0 deletions

diff --git a/sysdeps/arm/fpu/__longjmp.S b/sysdeps/arm/fpu/__longjmp.S
new file mode 100644
index 0000000000..90efeec1eb
--- /dev/null
+++ b/sysdeps/arm/fpu/__longjmp.S
@@ -0,0 +1,36 @@
+/* longjmp for ARM.
+   Copyright (C) 1997, 1998 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.  */
+
+#include <sysdep.h>
+#define _SETJMP_H
+#define _ASM
+#include <bits/setjmp.h>
+
+/* __longjmp(jmpbuf, val) */
+
+ENTRY (__longjmp)
+	mov	ip, r0		/* save jmp_buf pointer */
+	
+	movs	r0, r1		/* get the return value in place */
+	moveq	r0, #1		/* can't let setjmp() return zero! */
+
+	lfmfd	f4, 4, [ip] !	/* load the floating point regs */
+
+	LOADREGS(ia, ip, {v1-v6, sl, fp, sp, pc})
+END (__longjmp)
diff --git a/sysdeps/arm/fpu/bits/fenv.h b/sysdeps/arm/fpu/bits/fenv.h
new file mode 100644
index 0000000000..7bd242385f
--- /dev/null
+++ b/sysdeps/arm/fpu/bits/fenv.h
@@ -0,0 +1,58 @@
+/* Copyright (C) 1997, 1998, 1999 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 exceptions in the FPU status word.  */
+enum
+  {
+    FE_INVALID = 1,
+#define FE_INVALID FE_INVALID
+    FE_DIVBYZERO = 2,
+#define FE_DIVBYZERO FE_DIVBYZERO
+    FE_OVERFLOW = 4,
+#define FE_OVERFLOW FE_OVERFLOW
+    FE_UNDERFLOW = 8,
+#define FE_UNDERFLOW FE_UNDERFLOW
+  };
+
+/* Amount to shift by to convert an exception to a mask bit.  */
+#define FE_EXCEPT_SHIFT	16
+
+/* All supported exceptions.  */
+#define FE_ALL_EXCEPT	\
+	(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW)
+
+/* The ARM FPU basically only supports round-to-nearest.  Other rounding
+   modes exist, but you have to encode them in the actual instruction.  */
+#define FE_TONEAREST	0
+
+/* Type representing exception flags. */
+typedef unsigned long int fexcept_t;
+
+/* Type representing floating-point environment.  */
+typedef struct
+  {
+    unsigned long int __cw;
+  }
+fenv_t;
+
+/* If the default argument is used we use this value.  */
+#define FE_DFL_ENV	((fenv_t *) -1l)
diff --git a/sysdeps/arm/fpu/bits/mathdef.h b/sysdeps/arm/fpu/bits/mathdef.h
new file mode 100644
index 0000000000..e013e74b7e
--- /dev/null
+++ b/sysdeps/arm/fpu/bits/mathdef.h
@@ -0,0 +1,44 @@
+/* Copyright (C) 1999, 2000, 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.  */
+
+#if !defined _MATH_H && !defined _COMPLEX_H
+# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
+#endif
+
+#if defined  __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
+# define _MATH_H_MATHDEF	1
+
+/* GCC does not promote `float' values to `double'.  */
+typedef float float_t;		/* `float' expressions are evaluated as
+				   `float'.  */
+typedef double double_t;	/* `double' expressions are evaluated as
+				   `double'.  */
+
+/* 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'.  This disables the
+   declaration of all the `long double' function variants.  */
+/* XXX The FPA does support this but the patterns in GCC are currently
+   turned off.  */
+# define __NO_LONG_DOUBLE_MATH	1
+#endif
diff --git a/sysdeps/arm/fpu/bits/setjmp.h b/sysdeps/arm/fpu/bits/setjmp.h
new file mode 100644
index 0000000000..dd85243032
--- /dev/null
+++ b/sysdeps/arm/fpu/bits/setjmp.h
@@ -0,0 +1,36 @@
+/* Copyright (C) 1997, 1998 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.  */
+
+/* Define the machine-dependent type `jmp_buf'.  ARM version. */
+
+#ifndef _SETJMP_H
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
+#endif
+
+#ifndef _ASM
+/* Jump buffer contains v1-v6, sl, fp, sp and pc.  Other registers are not
+   saved.  */
+typedef int __jmp_buf[22];
+#endif
+
+#define __JMP_BUF_SP		20
+
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+  ((void *) (address) < (void *) (jmpbuf[__JMP_BUF_SP]))
diff --git a/sysdeps/arm/fpu/fclrexcpt.c b/sysdeps/arm/fpu/fclrexcpt.c
new file mode 100644
index 0000000000..c6a53df45a
--- /dev/null
+++ b/sysdeps/arm/fpu/fclrexcpt.c
@@ -0,0 +1,50 @@
+/* Clear given exceptions in current floating-point environment.
+   Copyright (C) 1997,98,99,2000,01 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.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+__feclearexcept (int excepts)
+{
+  unsigned long int temp;
+
+  /* Mask out unsupported bits/exceptions.  */
+  excepts &= FE_ALL_EXCEPT;
+
+  /* Get the current floating point status. */
+  _FPU_GETCW (temp);
+
+  /* Clear the relevant bits.  */
+  temp &= excepts ^ FE_ALL_EXCEPT;
+
+  /* Put the new data in effect.  */
+  _FPU_SETCW (temp);
+
+  /* Success.  */
+  return 0;
+}
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__feclearexcept, __old_feclearexcept)
+compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
+#endif
+
+versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);
diff --git a/sysdeps/arm/fpu/fedisblxcpt.c b/sysdeps/arm/fpu/fedisblxcpt.c
new file mode 100644
index 0000000000..91f60a9c90
--- /dev/null
+++ b/sysdeps/arm/fpu/fedisblxcpt.c
@@ -0,0 +1,40 @@
+/* Disable floating-point exceptions.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Philip Blundell <philb@gnu.org>, 2001.
+
+   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 <fenv.h>
+#include <fpu_control.h>
+
+int
+fedisableexcept (int excepts)
+{
+  unsigned long int new_exc, old_exc;
+
+  _FPU_GETCW(new_exc);
+
+  old_exc = (new_exc >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT;
+
+  excepts &= FE_ALL_EXCEPT;
+
+  new_exc &= ~(excepts << FE_EXCEPT_SHIFT);
+
+  _FPU_SETCW(new_exc);
+
+  return old_exc;
+}
diff --git a/sysdeps/arm/fpu/feenablxcpt.c b/sysdeps/arm/fpu/feenablxcpt.c
new file mode 100644
index 0000000000..e77e45a523
--- /dev/null
+++ b/sysdeps/arm/fpu/feenablxcpt.c
@@ -0,0 +1,40 @@
+/* Enable floating-point exceptions.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Philip Blundell <philb@gnu.org>, 2001.
+
+   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 <fenv.h>
+#include <fpu_control.h>
+
+int
+feenableexcept (int excepts)
+{
+  unsigned long int new_exc, old_exc;
+
+  _FPU_GETCW(new_exc);
+
+  old_exc = (new_exc >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT;
+
+  excepts &= FE_ALL_EXCEPT;
+
+  new_exc |= (excepts << FE_EXCEPT_SHIFT);
+
+  _FPU_SETCW(new_exc);
+
+  return old_exc;
+}
diff --git a/sysdeps/arm/fpu/fegetenv.c b/sysdeps/arm/fpu/fegetenv.c
new file mode 100644
index 0000000000..0b40f183e2
--- /dev/null
+++ b/sysdeps/arm/fpu/fegetenv.c
@@ -0,0 +1,40 @@
+/* Store current floating-point environment.
+   Copyright (C) 1997,98,99,2000,01 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.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+__fegetenv (fenv_t *envp)
+{
+  unsigned long int temp;
+  _FPU_GETCW (temp);
+  envp->__cw = temp;
+
+  /* Success.  */
+  return 0;
+}
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__fegetenv, __old_fegetenv)
+compat_symbol (libm, __old_fegetenv, fegetenv, GLIBC_2_1);
+#endif
+
+versioned_symbol (libm, __fegetenv, fegetenv, GLIBC_2_2);
diff --git a/sysdeps/arm/fpu/fegetexcept.c b/sysdeps/arm/fpu/fegetexcept.c
new file mode 100644
index 0000000000..653c8d5a0d
--- /dev/null
+++ b/sysdeps/arm/fpu/fegetexcept.c
@@ -0,0 +1,32 @@
+/* Get floating-point exceptions.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Philip Blundell <philb@gnu.org>, 2001
+
+   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 <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetexcept (void)
+{
+  unsigned long temp;
+
+  _FPU_GETCW (temp);
+
+  return (temp >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT;
+}
diff --git a/sysdeps/arm/fpu/fegetround.c b/sysdeps/arm/fpu/fegetround.c
new file mode 100644
index 0000000000..6bf65f5b5e
--- /dev/null
+++ b/sysdeps/arm/fpu/fegetround.c
@@ -0,0 +1,26 @@
+/* Return current rounding direction.
+   Copyright (C) 1997, 1998 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.  */
+
+#include <fenv.h>
+
+int
+fegetround (void)
+{
+  return FE_TONEAREST;		/* Easy. :-) */
+}
diff --git a/sysdeps/arm/fpu/feholdexcpt.c b/sysdeps/arm/fpu/feholdexcpt.c
new file mode 100644
index 0000000000..203b068aae
--- /dev/null
+++ b/sysdeps/arm/fpu/feholdexcpt.c
@@ -0,0 +1,37 @@
+/* Store current floating-point environment and clear exceptions.
+   Copyright (C) 1997, 1998, 1999 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.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+feholdexcept (fenv_t *envp)
+{
+  unsigned long int temp;
+
+  /* Store the environment.  */
+  _FPU_GETCW(temp);
+  envp->__cw = temp;
+
+  /* Now set all exceptions to non-stop.  */
+  temp &= ~(FE_ALL_EXCEPT << FE_EXCEPT_SHIFT);
+  _FPU_SETCW(temp);
+
+  return 0;
+}
diff --git a/sysdeps/arm/fpu/fesetenv.c b/sysdeps/arm/fpu/fesetenv.c
new file mode 100644
index 0000000000..bb8812acaf
--- /dev/null
+++ b/sysdeps/arm/fpu/fesetenv.c
@@ -0,0 +1,45 @@
+/* Install given floating-point environment.
+   Copyright (C) 1997,98,99,2000,01,02 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.  */
+
+#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->__cw;
+      _FPU_SETCW (temp);
+    }
+
+  /* Success.  */
+  return 0;
+}
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__fesetenv, __old_fesetenv)
+compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
+#endif
+
+libm_hidden_ver (__fesetenv, fesetenv)
+versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
diff --git a/sysdeps/arm/fpu/fesetround.c b/sysdeps/arm/fpu/fesetround.c
new file mode 100644
index 0000000000..bdb849ff60
--- /dev/null
+++ b/sysdeps/arm/fpu/fesetround.c
@@ -0,0 +1,27 @@
+/* Set current rounding direction.
+   Copyright (C) 1997, 1998 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.  */
+
+#include <fenv.h>
+
+int
+fesetround (int round)
+{
+  /* We only support FE_TONEAREST, so there is no need for any work.  */
+  return (round == FE_TONEAREST)?0:1;
+}
diff --git a/sysdeps/arm/fpu/fpu_control.h b/sysdeps/arm/fpu/fpu_control.h
new file mode 100644
index 0000000000..65912e4962
--- /dev/null
+++ b/sysdeps/arm/fpu/fpu_control.h
@@ -0,0 +1,102 @@
+/* FPU control word definitions.  ARM version.
+   Copyright (C) 1996, 1997, 1998, 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.  */
+
+#ifndef _FPU_CONTROL_H
+#define _FPU_CONTROL_H
+
+/* We have a slight terminology confusion here.  On the ARM, the register
+ * we're interested in is actually the FPU status word - the FPU control
+ * word is something different (which is implementation-defined and only
+ * accessible from supervisor mode.)
+ *
+ * The FPSR looks like this:
+ *
+ *     31-24        23-16          15-8              7-0
+ * | system ID | trap enable | system control | exception flags |
+ *
+ * We ignore the system ID bits; for interest's sake they are:
+ *
+ *  0000	"old" FPE
+ *  1000	FPPC hardware
+ *  0001	FPE 400
+ *  1001	FPA hardware
+ *
+ * The trap enable and exception flags are both structured like this:
+ *
+ *     7 - 5     4     3     2     1     0
+ * | reserved | INX | UFL | OFL | DVZ | IVO |
+ *
+ * where a `1' bit in the enable byte means that the trap can occur, and
+ * a `1' bit in the flags byte means the exception has occurred.
+ *
+ * The exceptions are:
+ *
+ *  IVO - invalid operation
+ *  DVZ - divide by zero
+ *  OFL - overflow
+ *  UFL - underflow
+ *  INX - inexact (do not use; implementations differ)
+ *
+ * The system control byte looks like this:
+ *
+ *     7-5      4    3    2    1    0
+ * | reserved | AC | EP | SO | NE | ND |
+ *
+ * where the bits mean
+ *
+ *  ND - no denormalised numbers (force them all to zero)
+ *  NE - enable NaN exceptions
+ *  SO - synchronous operation
+ *  EP - use expanded packed-decimal format
+ *  AC - use alternate definition for C flag on compare operations
+ */
+
+/* masking of interrupts */
+#define _FPU_MASK_IM	0x00010000	/* invalid operation */
+#define _FPU_MASK_ZM	0x00020000	/* divide by zero */
+#define _FPU_MASK_OM	0x00040000	/* overflow */
+#define _FPU_MASK_UM	0x00080000	/* underflow */
+#define _FPU_MASK_PM	0x00100000	/* inexact */
+#define _FPU_MASK_DM	0x00000000	/* denormalized operation */
+
+/* The system id bytes cannot be changed.
+   Only the bottom 5 bits in the trap enable byte can be changed.
+   Only the bottom 5 bits in the system control byte can be changed.
+   Only the bottom 5 bits in the exception flags are used.
+   The exception flags are set by the fpu, but can be zeroed by the user. */
+#define _FPU_RESERVED	0xffe0e0e0	/* These bits are reserved.  */
+
+/* The fdlibm code requires strict IEEE double precision arithmetic,
+   no interrupts for exceptions, rounding to nearest.  Changing the
+   rounding mode will break long double I/O.  Turn on the AC bit,
+   the compiler generates code that assumes it is on.  */
+#define _FPU_DEFAULT	0x00001000	/* Default value.  */
+#define _FPU_IEEE	0x001f1000	/* Default + exceptions enabled. */
+
+/* Type of the control word.  */
+typedef unsigned int fpu_control_t;
+
+/* Macros for accessing the hardware control word.  */
+#define _FPU_GETCW(cw) __asm__ ("rfs %0" : "=r" (cw))
+#define _FPU_SETCW(cw) __asm__ ("wfs %0" : : "r" (cw))
+
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+
+#endif /* _FPU_CONTROL_H */
diff --git a/sysdeps/arm/fpu/fraiseexcpt.c b/sysdeps/arm/fpu/fraiseexcpt.c
new file mode 100644
index 0000000000..f7dede2fe2
--- /dev/null
+++ b/sysdeps/arm/fpu/fraiseexcpt.c
@@ -0,0 +1,44 @@
+/* Raise given exceptions.
+   Copyright (C) 1997,98,99,2000,01,02 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.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+#include <math.h>
+
+int
+__feraiseexcept (int excepts)
+{
+  /* Raise exceptions represented by EXPECTS.  */
+  fexcept_t temp;
+  _FPU_GETCW (temp);
+  temp |= (excepts & FE_ALL_EXCEPT);
+  _FPU_SETCW (temp);
+
+  /* Success.  */
+  return 0;
+}
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__feraiseexcept, __old_feraiseexcept)
+compat_symbol (libm, __old_feraiseexcept, feraiseexcept, GLIBC_2_1);
+#endif
+
+libm_hidden_ver (__feraiseexcept, feraiseexcept)
+versioned_symbol (libm, __feraiseexcept, feraiseexcept, GLIBC_2_2);
diff --git a/sysdeps/arm/fpu/fsetexcptflg.c b/sysdeps/arm/fpu/fsetexcptflg.c
new file mode 100644
index 0000000000..4e1d2cba4a
--- /dev/null
+++ b/sysdeps/arm/fpu/fsetexcptflg.c
@@ -0,0 +1,49 @@
+/* Set floating-point environment exception handling.
+   Copyright (C) 1997,98,99,2000,01 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.  */
+
+#include <fenv.h>
+#include <math.h>
+#include <fpu_control.h>
+
+int
+__fesetexceptflag (const fexcept_t *flagp, int excepts)
+{
+  fexcept_t temp;
+
+  /* Get the current environment.  */
+  _FPU_GETCW (temp);
+
+  /* Set the desired exception mask.  */
+  temp &= ~((excepts & FE_ALL_EXCEPT) << FE_EXCEPT_SHIFT);
+  temp |= (*flagp & excepts & FE_ALL_EXCEPT) << FE_EXCEPT_SHIFT;
+
+  /* Save state back to the FPU.  */
+  _FPU_SETCW (temp);
+
+  /* Success.  */
+  return 0;
+}
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__fesetexceptflag, __old_fesetexceptflag)
+compat_symbol (libm, __old_fesetexceptflag, fesetexceptflag, GLIBC_2_1);
+#endif
+
+versioned_symbol (libm, __fesetexceptflag, fesetexceptflag, GLIBC_2_2);
diff --git a/sysdeps/arm/fpu/ftestexcept.c b/sysdeps/arm/fpu/ftestexcept.c
new file mode 100644
index 0000000000..328bcb05fd
--- /dev/null
+++ b/sysdeps/arm/fpu/ftestexcept.c
@@ -0,0 +1,32 @@
+/* Test exception in current environment.
+   Copyright (C) 1997, 1998 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.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fetestexcept (int excepts)
+{
+  fexcept_t temp;
+
+  /* Get current exceptions.  */
+  _FPU_GETCW(temp);
+
+  return temp & excepts & FE_ALL_EXCEPT;
+}
diff --git a/sysdeps/arm/fpu/setjmp.S b/sysdeps/arm/fpu/setjmp.S
new file mode 100644
index 0000000000..84328369ac
--- /dev/null
+++ b/sysdeps/arm/fpu/setjmp.S
@@ -0,0 +1,35 @@
+/* setjmp for ARM.
+   Copyright (C) 1997, 1998 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.  */
+
+#include <sysdep.h>
+#define _SETJMP_H
+#define _ASM
+#include <bits/setjmp.h>
+
+ENTRY (__sigsetjmp)
+	/* Save registers */
+	sfmea	f4, 4, [r0]!
+	stmia	r0, {v1-v6, sl, fp, sp, lr}
+
+	/* Restore pointer to jmp_buf */
+	sub	r0, r0, #48
+
+	/* Make a tail call to __sigjmp_save; it takes the same args.  */
+	B	PLTJMP(C_SYMBOL_NAME(__sigjmp_save))
+END (__sigsetjmp)