Remove more obsolete ARM code.

ChangeLog.arm

@@ -1,5 +1,23 @@
 2012-05-19  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/arm/bits/endian.h (__FLOAT_WORD_ORDER): Remove
+	definitions.
+	* sysdeps/arm/bits/huge_val.h: Remove file.
+	* sysdeps/arm/bits/string.h: Remove file.
+	* sysdeps/unix/sysv/linux/arm/readahead.c [__NR_readahead]: Make
+	code unconditional.
+	[!__NR_readahead]: Remove conditional code.
+	* sysdeps/unix/sysv/linux/arm/sigaction.c [__NR_rt_sigreturn]:
+	Make code unconditional.
+	[!__NR_rt_sigreturn]: Remove conditional code.
+	* sysdeps/unix/sysv/linux/arm/sigrestorer.S [__NR_rt_sigreturn]:
+	Make code unconditional.
+	* sysdeps/unix/sysv/linux/arm/sysdep.h [__NR_SYSCALL_BASE != 0]:
+	Remove conditional #error.
+	(__NR_stime): Remove #undef.
+	(__NR_alarm): Likewise.
+	(SWI_BASE): Remove.
+
 	* sysdeps/unix/sysv/linux/arm/ftruncate64.c (kernel-features.h):
 	Don't include.
 	[__NR_ftruncate64]: Make code unconditional.

sysdeps/arm/bits/endian.h

@@ -8,12 +8,3 @@
 #else
 #define __BYTE_ORDER __LITTLE_ENDIAN
 #endif
-
-/* FPA floating point units are always big-endian, irrespective of the
-   CPU endianness.  VFP floating point units use the same endianness
-   as the rest of the system.  */
-#ifdef __VFP_FP__
-#define __FLOAT_WORD_ORDER __BYTE_ORDER
-#else
-#define __FLOAT_WORD_ORDER __BIG_ENDIAN
-#endif

sysdeps/arm/bits/huge_val.h

@@ -1,54 +0,0 @@
-/* `HUGE_VAL' constant for IEEE 754 machines (where it is infinity).
-   Used by <stdlib.h> and <math.h> functions for overflow.
-   Copyright (C) 1992, 1995, 1996, 1997, 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, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _MATH_H
-# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
-#endif
-
-/* IEEE positive infinity (-HUGE_VAL is negative infinity).  */
-
-#if __GNUC_PREREQ(3,3)
-# define HUGE_VAL	(__builtin_huge_val())
-#elif __GNUC_PREREQ(2,96)
-# define HUGE_VAL	(__extension__ 0x1.0p2047)
-#elif defined __GNUC__
-
-# define HUGE_VAL \
-  (__extension__							      \
-   ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; })   \
-    { __l: 0x7ff0000000000000ULL }).__d)
-
-#else /* not GCC */
-
-# include <endian.h>
-
-typedef union { unsigned char __c[8]; double __d; } __huge_val_t;
-
-# if __BYTE_ORDER == __BIG_ENDIAN
-#  define __HUGE_VAL_bytes	{ 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 }
-# endif
-# if __BYTE_ORDER == __LITTLE_ENDIAN
-#  define __HUGE_VAL_bytes	{ 0, 0, 0, 0, 0, 0, 0xf0, 0x7f }
-# endif
-
-static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
-# define HUGE_VAL	(__huge_val.__d)
-
-#endif	/* GCC.  */

sysdeps/arm/bits/string.h

@@ -1,30 +0,0 @@
-/* Optimized, inlined string functions.  ARM version.
-   Copyright (C) 1998, 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, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _STRING_H
-# error "Never use <bits/string.h> directly; include <string.h> instead."
-#endif
-
-/* We must defeat the generic optimized versions of these functions in
-   <bits/string2.h> since they don't work on the ARM.  This is because
-   the games they play with the __STRING2_COPY_ARR# structures fail
-   when structs are always 32-bit aligned.
-   XXX Should provide suitably optimal replacements.  */
-#define _HAVE_STRING_ARCH_strcpy 1
-#define _HAVE_STRING_ARCH_stpcpy 1
-#define _HAVE_STRING_ARCH_mempcpy 1

sysdeps/unix/sysv/linux/arm/readahead.c

@@ -1,5 +1,5 @@
 /* Provide kernel hint to read ahead.
-   Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2002-2012 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
@@ -25,8 +25,6 @@
 #include <sys/syscall.h>
 
 
-#ifdef __NR_readahead
-
 ssize_t
 __readahead (int fd, off64_t offset, size_t count)
 {
@@ -35,16 +33,5 @@ __readahead (int fd, off64_t offset, size_t count)
 					   (off_t) (offset & 0xffffffff)),
 			 count);
 }
-#else
-ssize_t
-__readahead (int fd, off64_t offset, size_t count)
-{
-  __set_errno (ENOSYS);
-  return -1;
-}
-stub_warning (readahead)
-
-# include <stub-tag.h>
-#endif
 
 weak_alias (__readahead, readahead)

sysdeps/unix/sysv/linux/arm/sigaction.c

@@ -48,14 +48,9 @@ extern void __default_rt_sa_restorer_v2(void);
 #endif
 
 /* When RT signals are in use we need to use a different return stub.  */
-#ifdef __NR_rt_sigreturn
 #define choose_restorer(flags)					\
   (flags & SA_SIGINFO) ? __default_rt_sa_restorer		\
   : __default_sa_restorer
-#else
-#define choose_restorer(flags)					\
-  __default_sa_restorer
-#endif
 
 /* If ACT is not NULL, change the action for SIG to *ACT.
    If OACT is not NULL, put the old action for SIG in *OACT.  */

sysdeps/unix/sysv/linux/arm/sigrestorer.S

@@ -1,4 +1,4 @@
-/* Copyright (C) 1999, 2005, 2009, 2010 Free Software Foundation, Inc.
+/* Copyright (C) 1999-2012 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
@@ -88,8 +88,6 @@ ENTRY(__default_sa_restorer_v2)
 END(__default_sa_restorer_v2)
 #undef OFFSET
 
-#ifdef __NR_rt_sigreturn
-
 #ifndef __ASSUME_SIGFRAME_V2
 #define OFFSET 168
 	.fnstart
@@ -117,5 +115,3 @@ ENTRY(__default_rt_sa_restorer_v2)
 	.fnend
 END(__default_rt_sa_restorer_v2)
 #undef OFFSET
-
-#endif /* __NR_rt_sigreturn */

sysdeps/unix/sysv/linux/arm/sysdep.h

@@ -28,16 +28,6 @@
 
 #include <tls.h>
 
-#if __NR_SYSCALL_BASE != 0
-# error Kernel headers are too old
-#endif
-
-/* Don't use stime, even if the kernel headers define it.  We have
-   settimeofday, and some EABI kernels have removed stime.  Similarly
-   use setitimer to implement alarm.  */
-#undef __NR_stime
-#undef __NR_alarm
-
 /* In order to get __set_errno() definition in INLINE_SYSCALL.  */
 #ifndef __ASSEMBLER__
 #include <errno.h>
@@ -48,7 +38,6 @@
    of the kernel.  But these symbols do not follow the SYS_* syntax
    so we have to redefine the `SYS_ify' macro here.  */
 #undef SYS_ify
-#define SWI_BASE  (0x900000)
 #define SYS_ify(syscall_name)	(__NR_##syscall_name)