Initial version of the CRIS port.

27 files changed, 1634 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/cris/Makefile b/libc/sysdeps/linux/cris/Makefile
new file mode 100644
index 000000000..398139be5
--- /dev/null
+++ b/libc/sysdeps/linux/cris/Makefile
@@ -0,0 +1,59 @@
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU Library General Public License as published by the Free
+# Software Foundation; either version 2 of the License, or (at your option) any
+# later version.
+#
+# This program 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 Library General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Library General Public License
+# along with this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+TOPDIR=../../../../
+include $(TOPDIR)Rules.mak
+ASFLAGS=$(CFLAGS)
+
+CRT0=crt0.c
+CRT0_OBJ=$(patsubst %.c,%.o, $(CRT0))
+
+SSRC= setjmp.S __longjmp.S
+ifeq ($(UNIFIED_SYSCALL),true)
+	SSRC += __uClibc_syscall.S
+endif
+SOBJS=$(patsubst %.S,%.o, $(SSRC))
+
+CSRC= __init_brk.c brk.c sbrk.c vfork.c
+COBJS=$(patsubst %.c,%.o, $(CSRC))
+
+OBJS=$(SOBJS) $(COBJS)
+
+
+all: $(OBJS) $(LIBC)
+
+$(LIBC): ar-target 
+
+ar-target: $(OBJS) $(CRT0_OBJ)
+	$(AR) $(ARFLAGS) $(LIBC) $(OBJS)
+	cp $(CRT0_OBJ) $(TOPDIR)libc/$(CRT0_OBJ)
+
+$(CRT0_OBJ): %.o : %.c
+	$(CC) $(CFLAGS) -c $< -o $@
+	$(STRIPTOOL) -x -R .note -R .comment $*.o
+
+$(SOBJS): %.o : %.S
+	$(CC) $(CFLAGS) -c $< -o $@
+	$(STRIPTOOL) -x -R .note -R .comment $*.o
+
+$(COBJS): %.o : %.c
+	$(CC) $(CFLAGS) -c $< -o $@
+	$(STRIPTOOL) -x -R .note -R .comment $*.o
+
+headers:
+	@(TOPDIR=$(TOPDIR) CC=$(CC) /bin/sh $(TOPDIR)/extra/scripts/gen_bits_syscall_h.sh > bits/syscall.h ) 
+
+clean:
+	rm -f *.[oa] *~ core
+
diff --git a/libc/sysdeps/linux/cris/__init_brk.c b/libc/sysdeps/linux/cris/__init_brk.c
new file mode 100644
index 000000000..0f5624b85
--- /dev/null
+++ b/libc/sysdeps/linux/cris/__init_brk.c
@@ -0,0 +1,32 @@
+/* From libc-5.3.12 */
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <errno.h>
+#include "sysdep.h"
+
+void * ___brk_addr = 0;
+
+int
+__init_brk (void)
+{
+    if (___brk_addr == 0) {
+	    /* Notice that we don't need to save/restore the GOT
+	     * register since that is not call clobbered by the syscall
+	     */
+	    
+	    asm ("clear.d $r10\n\t"
+		 "movu.w " STR(__NR_brk) ",$r9\n\t"
+		 "break 13\n\t"
+		 "move.d $r10, %0"
+		 : "=r" (___brk_addr)
+		 :
+		 : "r9", "r10");
+	    
+	    if (___brk_addr == 0) {
+		    __set_errno(ENOMEM);
+		    return -1;
+	    }
+    }
+    return 0;
+}
diff --git a/libc/sysdeps/linux/cris/__longjmp.S b/libc/sysdeps/linux/cris/__longjmp.S
new file mode 100644
index 000000000..98472a673
--- /dev/null
+++ b/libc/sysdeps/linux/cris/__longjmp.S
@@ -0,0 +1,40 @@
+/* longjmp for CRIS.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+#define _SETJMP_H
+#define _ASM
+#include <bits/setjmp.h>
+
+/* Saving and restoring CCR is meaningless, so we don't do it.  */
+ENTRY (__longjmp)
+	/* Note that r10 = jmp_buf, r11 = retval.  */
+	move [$r10+16*4],$srp
+	test.d $r11
+	beq 0f                  /* Already a 1 in place. */
+	nop
+	/* Offset for r9, the return value (see setjmp).  */
+	move.d $r11,[$r10+6*4]
+0:
+	movem [$r10],$pc
+END (__longjmp)
+
+	.weak longjmp
+	longjmp = __longjmp
+
diff --git a/libc/sysdeps/linux/cris/bits/byteswap.h b/libc/sysdeps/linux/cris/bits/byteswap.h
new file mode 100644
index 000000000..60544a0ad
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/byteswap.h
@@ -0,0 +1,47 @@
+#define ___swab16(x) \
+({ \
+	unsigned short __x = (x); \
+	((unsigned short)( \
+		(((unsigned short)(__x) & (unsigned short)0x00ffU) << 8) | \
+		(((unsigned short)(__x) & (unsigned short)0xff00U) >> 8) )); \
+})
+
+#define ___swab32(x) \
+({ \
+	unsigned long __x = (x); \
+	((unsigned long)( \
+		(((unsigned long)(__x) & (unsigned long)0x000000ffUL) << 24) | \
+		(((unsigned long)(__x) & (unsigned long)0x0000ff00UL) <<  8) | \
+		(((unsigned long)(__x) & (unsigned long)0x00ff0000UL) >>  8) | \
+		(((unsigned long)(__x) & (unsigned long)0xff000000UL) >> 24) )); \
+})
+
+/* these are CRIS specific */
+
+static inline unsigned short __fswab16(unsigned short x)
+{
+	__asm__ ("swapb %0" : "=r" (x) : "0" (x));
+	
+	return(x);
+}
+
+static inline unsigned long __fswab32(unsigned long x)
+{
+	__asm__ ("swapwb %0" : "=r" (x) : "0" (x));
+	
+	return(x);
+}
+
+#  define __bswap_16(x) \
+(__builtin_constant_p((unsigned short)(x)) ? \
+ ___swab16((x)) : \
+ __fswab16((x)))
+
+#  define __bswap_32(x) \
+(__builtin_constant_p((unsigned long)(x)) ? \
+ ___swab32((x)) : \
+ __fswab32((x)))
+
+
+
+
diff --git a/libc/sysdeps/linux/cris/bits/endian.h b/libc/sysdeps/linux/cris/bits/endian.h
new file mode 100644
index 000000000..90e290b92
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/endian.h
@@ -0,0 +1,7 @@
+/* cris is little-endian.  */
+
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
diff --git a/libc/sysdeps/linux/cris/bits/fcntl.h b/libc/sysdeps/linux/cris/bits/fcntl.h
new file mode 100644
index 000000000..d47a66191
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/fcntl.h
@@ -0,0 +1,141 @@
+/* O_*, F_*, FD_* bit values for Linux.
+   Copyright (C) 1995, 1996, 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef	_FCNTL_H
+# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
+#endif
+
+
+#include <sys/types.h>
+
+/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
+   located on an ext2 file system */
+#define O_ACCMODE	   0003
+#define O_RDONLY	     00
+#define O_WRONLY	     01
+#define O_RDWR		     02
+#define O_CREAT		   0100	/* not fcntl */
+#define O_EXCL		   0200	/* not fcntl */
+#define O_NOCTTY	   0400	/* not fcntl */
+#define O_TRUNC		  01000	/* not fcntl */
+#define O_APPEND	  02000
+#define O_NONBLOCK	  04000
+#define O_NDELAY	O_NONBLOCK
+#define O_SYNC		 010000
+#define O_FSYNC		 O_SYNC
+#define O_ASYNC		 020000
+
+#ifdef __USE_GNU
+# define O_DIRECT	 040000	/* Direct disk access.  */
+# define O_DIRECTORY	0200000	/* Must be a directory.  */
+# define O_NOFOLLOW	0400000	/* Do not follow links.  */
+#endif
+
+/* For now Linux has synchronisity options for data and read operations.
+   We define the symbols here but let them do the same as O_SYNC since
+   this is a superset.  */
+#if defined __USE_POSIX199309 || defined __USE_UNIX98
+# define O_DSYNC	O_SYNC	/* Synchronize data.  */
+# define O_RSYNC	O_SYNC	/* Synchronize read operations.  */
+#endif
+
+#ifdef __USE_LARGEFILE64
+# define O_LARGEFILE	0100000
+#endif
+
+/* Values for the second argument to `fcntl'.  */
+#define F_DUPFD		0	/* Duplicate file descriptor.  */
+#define F_GETFD		1	/* Get file descriptor flags.  */
+#define F_SETFD		2	/* Set file descriptor flags.  */
+#define F_GETFL		3	/* Get file status flags.  */
+#define F_SETFL		4	/* Set file status flags.  */
+#define F_GETLK		5	/* Get record locking info.  */
+#define F_SETLK		6	/* Set record locking info (non-blocking).  */
+#define F_SETLKW	7	/* Set record locking info (blocking).  */
+
+/* XXX missing */
+#define F_GETLK64	5	/* Get record locking info.  */
+#define F_SETLK64	6	/* Set record locking info (non-blocking).  */
+#define F_SETLKW64	7	/* Set record locking info (blocking).  */
+
+#ifdef __USE_BSD
+# define F_SETOWN	8	/* Get owner of socket (receiver of SIGIO).  */
+# define F_GETOWN	9	/* Set owner of socket (receiver of SIGIO).  */
+#endif
+
+#ifdef __USE_GNU
+# define F_SETSIG	10	/* Set number of signal to be sent.  */
+# define F_GETSIG	11	/* Get number of signal to be sent.  */
+#endif
+
+/* For F_[GET|SET]FL.  */
+#define FD_CLOEXEC	1	/* actually anything with low bit set goes */
+
+/* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
+#define F_RDLCK		0	/* Read lock.  */
+#define F_WRLCK		1	/* Write lock.  */
+#define F_UNLCK		2	/* Remove lock.  */
+
+/* for old implementation of bsd flock () */
+#define F_EXLCK		4	/* or 3 */
+#define F_SHLCK		8	/* or 4 */
+
+#ifdef __USE_BSD
+/* operations for bsd flock(), also used by the kernel implementation */
+# define LOCK_SH	1	/* shared lock */
+# define LOCK_EX	2	/* exclusive lock */
+# define LOCK_NB	4	/* or'd with one of the above to prevent
+				   blocking */
+# define LOCK_UN	8	/* remove lock */
+#endif
+
+struct flock
+  {
+    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
+#ifndef __USE_FILE_OFFSET64
+    __off_t l_start;	/* Offset where the lock begins.  */
+    __off_t l_len;	/* Size of the locked area; zero means until EOF.  */
+#else
+    __off64_t l_start;	/* Offset where the lock begins.  */
+    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
+#endif
+    __pid_t l_pid;	/* Process holding the lock.  */
+  };
+
+#ifdef __USE_LARGEFILE64
+struct flock64
+  {
+    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
+    __off64_t l_start;	/* Offset where the lock begins.  */
+    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
+    __pid_t l_pid;	/* Process holding the lock.  */
+  };
+#endif
+
+/* Define some more compatibility macros to be backward compatible with
+   BSD systems which did not managed to hide these kernel macros.  */
+#ifdef	__USE_BSD
+# define FAPPEND	O_APPEND
+# define FFSYNC		O_FSYNC
+# define FASYNC		O_ASYNC
+# define FNONBLOCK	O_NONBLOCK
+# define FNDELAY	O_NDELAY
+#endif /* Use BSD.  */
diff --git a/libc/sysdeps/linux/cris/bits/huge_val.h b/libc/sysdeps/linux/cris/bits/huge_val.h
new file mode 100644
index 000000000..43f576d8a
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/huge_val.h
@@ -0,0 +1,81 @@
+/* `HUGE_VAL' constants for ix86 (where it is infinity).
+   Used by <stdlib.h> and <math.h> functions for overflow.
+   Copyright (C) 1992, 1995, 1996, 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.  */
+
+#ifndef _MATH_H
+# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
+#endif
+
+#include <features.h>
+
+/* IEEE positive infinity (-HUGE_VAL is negative infinity).  */
+
+#if __GNUC_PREREQ(2,96)
+# define HUGE_VAL	(__extension__ 0x1.0p2047)
+#else
+# define __HUGE_VAL_bytes	{ 0, 0, 0, 0, 0, 0, 0xf0, 0x7f }
+
+# define __huge_val_t	union { unsigned char __c[8]; double __d; }
+# ifdef	__GNUC__
+#  define HUGE_VAL	(__extension__ \
+			 ((__huge_val_t) { __c: __HUGE_VAL_bytes }).__d)
+# else	/* Not GCC.  */
+static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
+#  define HUGE_VAL	(__huge_val.__d)
+# endif	/* GCC.  */
+#endif /* GCC 2.95 */
+
+
+/* ISO C99 extensions: (float) HUGE_VALF and (long double) HUGE_VALL.  */
+
+#ifdef __USE_ISOC99
+
+# if __GNUC_PREREQ(2,96)
+
+#  define HUGE_VALF (__extension__ 0x1.0p255f)
+#  define HUGE_VALL (__extension__ 0x1.0p32767L)
+
+# else
+
+#  define __HUGE_VALF_bytes	{ 0, 0, 0x80, 0x7f }
+
+#  define __huge_valf_t	union { unsigned char __c[4]; float __f; }
+#  ifdef	__GNUC__
+#   define HUGE_VALF	(__extension__ \
+			 ((__huge_valf_t) { __c: __HUGE_VALF_bytes }).__f)
+#  else	/* Not GCC.  */
+static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
+#   define HUGE_VALF	(__huge_valf.__f)
+#  endif	/* GCC.  */
+
+
+#  define __HUGE_VALL_bytes	{ 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0x7f, 0, 0 }
+
+#  define __huge_vall_t	union { unsigned char __c[12]; long double __ld; }
+#  ifdef __GNUC__
+#   define HUGE_VALL	(__extension__ \
+			 ((__huge_vall_t) { __c: __HUGE_VALL_bytes }).__ld)
+#  else	/* Not GCC.  */
+static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes };
+#   define HUGE_VALL	(__huge_vall.__ld)
+#  endif /* GCC.  */
+
+# endif /* GCC 2.95 */
+
+#endif	/* __USE_ISOC99.  */
diff --git a/libc/sysdeps/linux/cris/bits/kernel_stat.h b/libc/sysdeps/linux/cris/bits/kernel_stat.h
new file mode 100644
index 000000000..5f0c0f4fe
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/kernel_stat.h
@@ -0,0 +1,80 @@
+/* Taken from linux/include/asm-cris/stat.h */
+
+#ifndef _CRIS_STAT_H
+#define _CRIS_STAT_H
+
+struct __old_kernel_stat {
+	unsigned short st_dev;
+	unsigned short st_ino;
+	unsigned short st_mode;
+	unsigned short st_nlink;
+	unsigned short st_uid;
+	unsigned short st_gid;
+	unsigned short st_rdev;
+	unsigned long  st_size;
+	unsigned long  st_atime;
+	unsigned long  st_mtime;
+	unsigned long  st_ctime;
+};
+
+struct stat {
+	unsigned short st_dev;
+	unsigned short __pad1;
+	unsigned long st_ino;
+	unsigned short st_mode;
+	unsigned short st_nlink;
+	unsigned short st_uid;
+	unsigned short st_gid;
+	unsigned short st_rdev;
+	unsigned short __pad2;
+	unsigned long  st_size;
+	unsigned long  st_blksize;
+	unsigned long  st_blocks;
+	unsigned long  st_atime;
+	unsigned long  __unused1;
+	unsigned long  st_mtime;
+	unsigned long  __unused2;
+	unsigned long  st_ctime;
+	unsigned long  __unused3;
+	unsigned long  __unused4;
+	unsigned long  __unused5;
+};
+
+/* This matches struct stat64 in glibc2.1, hence the absolutely
+ * insane amounts of padding around dev_t's.
+ */
+struct stat64 {
+	unsigned short	st_dev;
+	unsigned char	__pad0[10];
+
+#define STAT64_HAS_BROKEN_ST_INO	1
+	unsigned long	__st_ino;
+
+	unsigned int	st_mode;
+	unsigned int	st_nlink;
+
+	unsigned long	st_uid;
+	unsigned long	st_gid;
+
+	unsigned short	st_rdev;
+	unsigned char	__pad3[10];
+
+	long long	st_size;
+	unsigned long	st_blksize;
+
+	unsigned long	st_blocks;	/* Number 512-byte blocks allocated. */
+	unsigned long	__pad4;		/* future possible st_blocks high bits */
+
+	unsigned long	st_atime;
+	unsigned long	__pad5;
+
+	unsigned long	st_mtime;
+	unsigned long	__pad6;
+
+	unsigned long	st_ctime;
+	unsigned long	__pad7;		/* will be high 32 bits of ctime someday */
+
+	unsigned long long	st_ino;
+};
+
+#endif
diff --git a/libc/sysdeps/linux/cris/bits/kernel_types.h b/libc/sysdeps/linux/cris/bits/kernel_types.h
new file mode 100644
index 000000000..e5cdacc7b
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/kernel_types.h
@@ -0,0 +1,45 @@
+/* Taken from linux/include/asm-cris/posix_types.h */
+
+#ifndef __ARCH_CRIS_POSIX_TYPES_H
+#define __ARCH_CRIS_POSIX_TYPES_H
+
+typedef unsigned short	__kernel_dev_t;
+typedef unsigned long	__kernel_ino_t;
+typedef unsigned short	__kernel_mode_t;
+typedef unsigned short	__kernel_nlink_t;
+typedef long			__kernel_off_t;
+typedef int				__kernel_pid_t;
+typedef unsigned short  __kernel_ipc_pid_t;
+typedef unsigned short	__kernel_uid_t;
+typedef unsigned short	__kernel_gid_t;
+typedef unsigned long	__kernel_size_t;
+typedef long			__kernel_ssize_t;
+typedef int				__kernel_ptrdiff_t;
+typedef long			__kernel_time_t;
+typedef long            __kernel_suseconds_t;
+typedef long			__kernel_clock_t;
+typedef int				__kernel_daddr_t;
+typedef char *			__kernel_caddr_t;
+typedef unsigned short  __kernel_uid16_t;
+typedef unsigned short  __kernel_gid16_t;
+typedef unsigned int    __kernel_uid32_t;
+typedef unsigned int    __kernel_gid32_t;
+
+typedef unsigned short  __kernel_old_uid_t;
+typedef unsigned short  __kernel_old_gid_t;
+
+#ifdef __GNUC__
+typedef long long		__kernel_loff_t;
+#endif
+
+typedef struct {
+#if defined(__USE_ALL)
+	int	val[2];
+#else
+	int	__val[2];
+#endif
+} __kernel_fsid_t;
+
+/* should this ifdef be here ?  */
+
+#endif /* __ARCH_CRIS_POSIX_TYPES_H */
diff --git a/libc/sysdeps/linux/cris/bits/mathcalls.h b/libc/sysdeps/linux/cris/bits/mathcalls.h
new file mode 100644
index 000000000..c1181f737
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/mathcalls.h
@@ -0,0 +1,333 @@
+/* Prototype declarations for math functions; helper file for <math.h>.
+   Copyright (C) 1996,1997,1998,1999,2000,2001 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.  */
+
+/* NOTE: Because of the special way this file is used by <math.h>, this
+   file must NOT be protected from multiple inclusion as header files
+   usually are.
+
+   This file provides prototype declarations for the math functions.
+   Most functions are declared using the macro:
+
+   __MATHCALL (NAME,[_r], (ARGS...));
+
+   This means there is a function `NAME' returning `double' and a function
+   `NAMEf' returning `float'.  Each place `_Mdouble_' appears in the
+   prototype, that is actually `double' in the prototype for `NAME' and
+   `float' in the prototype for `NAMEf'.  Reentrant variant functions are
+   called `NAME_r' and `NAMEf_r'.
+
+   Functions returning other types like `int' are declared using the macro:
+
+   __MATHDECL (TYPE, NAME,[_r], (ARGS...));
+
+   This is just like __MATHCALL but for a function returning `TYPE'
+   instead of `_Mdouble_'.  In all of these cases, there is still
+   both a `NAME' and a `NAMEf' that takes `float' arguments.
+
+   Note that there must be no whitespace before the argument passed for
+   NAME, to make token pasting work with -traditional.  */
+
+#ifndef _MATH_H
+ #error "Never include <bits/mathcalls.h> directly; include <math.h> instead."
+#endif
+
+
+/* Trigonometric functions.  */
+
+/* Arc cosine of X.  */
+__MATHCALL (acos,, (_Mdouble_ __x));
+/* Arc sine of X.  */
+__MATHCALL (asin,, (_Mdouble_ __x));
+/* Arc tangent of X.  */
+__MATHCALL (atan,, (_Mdouble_ __x));
+/* Arc tangent of Y/X.  */
+__MATHCALL (atan2,, (_Mdouble_ __y, _Mdouble_ __x));
+
+/* Cosine of X.  */
+__MATHCALL (cos,, (_Mdouble_ __x));
+/* Sine of X.  */
+__MATHCALL (sin,, (_Mdouble_ __x));
+/* Tangent of X.  */
+__MATHCALL (tan,, (_Mdouble_ __x));
+
+#ifdef __USE_GNU
+/* Cosine and sine of X.  */
+__MATHDECL (void,sincos,,
+	    (_Mdouble_ __x, _Mdouble_ *__sinx, _Mdouble_ *__cosx));
+#endif
+
+/* Hyperbolic functions.  */
+
+/* Hyperbolic cosine of X.  */
+__MATHCALL (cosh,, (_Mdouble_ __x));
+/* Hyperbolic sine of X.  */
+__MATHCALL (sinh,, (_Mdouble_ __x));
+/* Hyperbolic tangent of X.  */
+__MATHCALL (tanh,, (_Mdouble_ __x));
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
+/* Hyperbolic arc cosine of X.  */
+__MATHCALL (acosh,, (_Mdouble_ __x));
+/* Hyperbolic arc sine of X.  */
+__MATHCALL (asinh,, (_Mdouble_ __x));
+/* Hyperbolic arc tangent of X.  */
+__MATHCALL (atanh,, (_Mdouble_ __x));
+#endif
+
+/* Exponential and logarithmic functions.  */
+
+/* Exponential function of X.  */
+__MATHCALL (exp,, (_Mdouble_ __x));
+
+#ifdef __USE_GNU
+/* A function missing in all standards: compute exponent to base ten.  */
+__MATHCALL (exp10,, (_Mdouble_ __x));
+/* Another name occasionally used.  */
+__MATHCALL (pow10,, (_Mdouble_ __x));
+#endif
+
+/* Break VALUE into a normalized fraction and an integral power of 2.  */
+__MATHCALL (frexp,, (_Mdouble_ __x, int *__exponent));
+
+/* X times (two to the EXP power).  */
+__MATHCALL (ldexp,, (_Mdouble_ __x, int __exponent));
+
+/* Natural logarithm of X.  */
+__MATHCALL (log,, (_Mdouble_ __x));
+
+/* Base-ten logarithm of X.  */
+__MATHCALL (log10,, (_Mdouble_ __x));
+
+/* Break VALUE into integral and fractional parts.  */
+__MATHCALL (modf,, (_Mdouble_ __x, _Mdouble_ *__iptr));
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
+/* Return exp(X) - 1.  */
+__MATHCALL (expm1,, (_Mdouble_ __x));
+
+/* Return log(1 + X).  */
+__MATHCALL (log1p,, (_Mdouble_ __x));
+
+/* Return the base 2 signed integral exponent of X.  */
+__MATHCALL (logb,, (_Mdouble_ __x));
+#endif
+
+#ifdef __USE_ISOC99
+/* Compute base-2 exponential of X.  */
+__MATHCALL (exp2,, (_Mdouble_ __x));
+
+/* Compute base-2 logarithm of X.  */
+__MATHCALL (log2,, (_Mdouble_ __x));
+#endif
+
+
+/* Power functions.  */
+
+/* Return X to the Y power.  */
+__MATHCALL (pow,, (_Mdouble_ __x, _Mdouble_ __y));
+
+/* Return the square root of X.  */
+__MATHCALL (sqrt,, (_Mdouble_ __x));
+
+#if defined __USE_MISC || defined __USE_XOPEN || defined __USE_ISOC99
+/* Return `sqrt(X*X + Y*Y)'.  */
+__MATHCALL (hypot,, (_Mdouble_ __x, _Mdouble_ __y));
+#endif
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
+/* Return the cube root of X.  */
+__MATHCALL (cbrt,, (_Mdouble_ __x));
+#endif
+
+
+/* Nearest integer, absolute value, and remainder functions.  */
+
+/* Smallest integral value not less than X.  */
+__MATHCALL (ceil,, (_Mdouble_ __x));
+
+/* Absolute value of X.  */
+__MATHCALLX (fabs,, (_Mdouble_ __x), (__const__));
+
+/* Largest integer not greater than X.  */
+__MATHCALL (floor,, (_Mdouble_ __x));
+
+/* Floating-point modulo remainder of X/Y.  */
+__MATHCALL (fmod,, (_Mdouble_ __x, _Mdouble_ __y));
+
+
+/* Return 0 if VALUE is finite or NaN, +1 if it
+   is +Infinity, -1 if it is -Infinity.  */
+__MATHDECL_1 (int,__isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
+
+/* Return nonzero if VALUE is finite and not NaN.  */
+__MATHDECL_1 (int,__finite,, (_Mdouble_ __value)) __attribute__ ((__const__));
+
+#ifdef __USE_MISC
+/* Return 0 if VALUE is finite or NaN, +1 if it
+   is +Infinity, -1 if it is -Infinity.  */
+__MATHDECL_1 (int,isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
+
+/* Return nonzero if VALUE is finite and not NaN.  */
+__MATHDECL_1 (int,finite,, (_Mdouble_ __value)) __attribute__ ((__const__));
+
+/* Return the remainder of X/Y.  */
+__MATHCALL (drem,, (_Mdouble_ __x, _Mdouble_ __y));
+
+
+/* Return the fractional part of X after dividing out `ilogb (X)'.  */
+__MATHCALL (significand,, (_Mdouble_ __x));
+#endif /* Use misc.  */
+
+#if defined __USE_MISC || defined __USE_ISOC99
+/* Return X with its signed changed to Y's.  */
+__MATHCALLX (copysign,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));
+#endif
+
+#ifdef __USE_ISOC99
+/* Return representation of NaN for double type.  */
+__MATHCALLX (nan,, (__const char *__tagb), (__const__));
+#endif
+
+
+/* Return nonzero if VALUE is not a number.  */
+__MATHDECL_1 (int,__isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
+
+#if defined __USE_MISC || defined __USE_XOPEN
+/* Return nonzero if VALUE is not a number.  */
+__MATHDECL_1 (int,isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
+
+/* Bessel functions.  */
+__MATHCALL (j0,, (_Mdouble_));
+__MATHCALL (j1,, (_Mdouble_));
+__MATHCALL (jn,, (int, _Mdouble_));
+__MATHCALL (y0,, (_Mdouble_));
+__MATHCALL (y1,, (_Mdouble_));
+__MATHCALL (yn,, (int, _Mdouble_));
+#endif
+
+
+#if defined __USE_MISC || defined __USE_XOPEN || defined __USE_ISOC99
+/* Error and gamma functions.  */
+__MATHCALL (erf,, (_Mdouble_));
+__MATHCALL (erfc,, (_Mdouble_));
+__MATHCALL (lgamma,, (_Mdouble_));
+#endif
+
+#ifdef __USE_ISOC99
+__MATHCALL (tgamma,, (_Mdouble_));
+#endif
+
+#if defined __USE_MISC || defined __USE_XOPEN
+/* Obsolete alias for `lgamma'.  */
+__MATHCALL (gamma,, (_Mdouble_));
+#endif
+
+#ifdef __USE_MISC
+/* Reentrant version of lgamma.  This function uses the global variable
+   `signgam'.  The reentrant version instead takes a pointer and stores
+   the value through it.  */
+__MATHCALL (lgamma,_r, (_Mdouble_, int *__signgamp));
+#endif
+
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
+/* Return the integer nearest X in the direction of the
+   prevailing rounding mode.  */
+__MATHCALL (rint,, (_Mdouble_ __x));
+
+/* Return X + epsilon if X < Y, X - epsilon if X > Y.  */
+__MATHCALLX (nextafter,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));
+# ifdef __USE_ISOC99
+__MATHCALLX (nexttoward,, (_Mdouble_ __x, long double __y), (__const__));
+# endif
+
+/* Return the remainder of integer divison X / Y with infinite precision.  */
+__MATHCALL (remainder,, (_Mdouble_ __x, _Mdouble_ __y));
+
+# if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+/* Return X times (2 to the Nth power).  */
+__MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n));
+# endif
+
+# if defined __USE_MISC || defined __USE_ISOC99
+/* Return X times (2 to the Nth power).  */
+__MATHCALL (scalbn,, (_Mdouble_ __x, int __n));
+# endif
+
+/* Return the binary exponent of X, which must be nonzero.  */
+__MATHDECL (int,ilogb,, (_Mdouble_ __x));
+#endif
+
+#ifdef __USE_ISOC99
+/* Return X times (2 to the Nth power).  */
+__MATHCALL (scalbln,, (_Mdouble_ __x, long int __n));
+
+/* Round X to integral value in floating-point format using current
+   rounding direction, but do not raise inexact exception.  */
+__MATHCALL (nearbyint,, (_Mdouble_ __x));
+
+/* Round X to nearest integral value, rounding halfway cases away from
+   zero.  */
+__MATHCALL (round,, (_Mdouble_ __x));
+
+/* Round X to the integral value in floating-point format nearest but
+   not larger in magnitude.  */
+__MATHCALLX (trunc,, (_Mdouble_ __x), (__const__));
+
+/* Compute remainder of X and Y and put in *QUO a value with sign of x/y
+   and magnitude congruent `mod 2^n' to the magnitude of the integral
+   quotient x/y, with n >= 3.  */
+__MATHCALL (remquo,, (_Mdouble_ __x, _Mdouble_ __y, int *__quo));
+
+
+/* Conversion functions.  */
+
+/* Round X to nearest integral value according to current rounding
+   direction.  */
+__MATHDECL (long int,lrint,, (_Mdouble_ __x));
+__MATHDECL (long long int,llrint,, (_Mdouble_ __x));
+
+/* Round X to nearest integral value, rounding halfway cases away from
+   zero.  */
+__MATHDECL (long int,lround,, (_Mdouble_ __x));
+__MATHDECL (long long int,llround,, (_Mdouble_ __x));
+
+
+/* Return positive difference between X and Y.  */
+__MATHCALL (fdim,, (_Mdouble_ __x, _Mdouble_ __y));
+
+/* Return maximum numeric value from X and Y.  */
+__MATHCALL (fmax,, (_Mdouble_ __x, _Mdouble_ __y));
+
+/* Return minimum numeric value from X and Y.  */
+__MATHCALL (fmin,, (_Mdouble_ __x, _Mdouble_ __y));
+
+
+/* Classify given number.  */
+__MATHDECL_1 (int, __fpclassify,, (_Mdouble_ __value))
+     __attribute__ ((__const__));
+
+/* Test for negative number.  */
+__MATHDECL_1 (int, __signbit,, (_Mdouble_ __value))
+     __attribute__ ((__const__));
+
+
+/* Multiply-add function computed as a ternary operation.  */
+__MATHCALL (fma,, (_Mdouble_ __x, _Mdouble_ __y, _Mdouble_ __z));
+#endif /* Use ISO C99.  */
diff --git a/libc/sysdeps/linux/cris/bits/mman.h b/libc/sysdeps/linux/cris/bits/mman.h
new file mode 100644
index 000000000..16216855f
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/mman.h
@@ -0,0 +1,93 @@
+/* Definitions for POSIX memory map interface.  Linux/cris version.
+   Copyright (C) 1997, 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 _SYS_MMAN_H
+# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
+#endif
+
+/* The following definitions basically come from the kernel headers.
+   But the kernel header is not namespace clean.  */
+
+
+/* Protections are chosen from these bits, OR'd together.  The
+   implementation does not necessarily support PROT_EXEC or PROT_WRITE
+   without PROT_READ.  The only guarantees are that no writing will be
+   allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */
+
+#define PROT_READ	0x1		/* Page can be read.  */
+#define PROT_WRITE	0x2		/* Page can be written.  */
+#define PROT_EXEC	0x4		/* Page can be executed.  */
+#define PROT_NONE	0x0		/* Page can not be accessed.  */
+
+/* Sharing types (must choose one and only one of these).  */
+#define MAP_SHARED	0x01		/* Share changes.  */
+#define MAP_PRIVATE	0x02		/* Changes are private.  */
+#ifdef __USE_MISC
+# define MAP_TYPE	0x0f		/* Mask for type of mapping.  */
+#endif
+
+/* Other flags.  */
+#define MAP_FIXED	0x10		/* Interpret addr exactly.  */
+#ifdef __USE_MISC
+# define MAP_FILE	0
+# define MAP_ANONYMOUS	0x20		/* Don't use a file.  */
+# define MAP_ANON	MAP_ANONYMOUS
+#endif
+
+/* These are Linux-specific.  */
+#ifdef __USE_MISC
+# define MAP_GROWSDOWN	0x0100		/* Stack-like segment.  */
+# define MAP_DENYWRITE	0x0800		/* ETXTBSY */
+# define MAP_EXECUTABLE	0x1000		/* Mark it as an executable.  */
+# define MAP_LOCKED	0x2000		/* Lock the mapping.  */
+# define MAP_NORESERVE	0x4000		/* Don't check for reservations.  */
+#endif
+
+/* Flags to `msync'.  */
+#define MS_ASYNC	1		/* Sync memory asynchronously.  */
+#define MS_SYNC		4		/* Synchronous memory sync.  */
+#define MS_INVALIDATE	2		/* Invalidate the caches.  */
+
+/* Flags for `mlockall'.  */
+#define MCL_CURRENT	1		/* Lock all currently mapped pages.  */
+#define MCL_FUTURE	2		/* Lock all additions to address
+					   space.  */
+
+/* Flags for `mremap'.  */
+#ifdef __USE_GNU
+# define MREMAP_MAYMOVE	1
+#endif
+
+/* Advice to `madvise'.  */
+#ifdef __USE_BSD
+# define MADV_NORMAL	 0	/* No further special treatment.  */
+# define MADV_RANDOM	 1	/* Expect random page references.  */
+# define MADV_SEQUENTIAL 2	/* Expect sequential page references.  */
+# define MADV_WILLNEED	 3	/* Will need these pages.  */
+# define MADV_DONTNEED	 4	/* Don't need these pages.  */
+#endif
+
+/* The POSIX people had to invent similar names for the same things.  */
+#ifdef __USE_XOPEN2K
+# define POSIX_MADV_NORMAL	0 /* No further special treatment.  */
+# define POSIX_MADV_RANDOM	1 /* Expect random page references.  */
+# define POSIX_MADV_SEQUENTIAL	2 /* Expect sequential page references.  */
+# define POSIX_MADV_WILLNEED	3 /* Will need these pages.  */
+# define POSIX_MADV_DONTNEED	4 /* Don't need these pages.  */
+#endif
diff --git a/libc/sysdeps/linux/cris/bits/setjmp.h b/libc/sysdeps/linux/cris/bits/setjmp.h
new file mode 100644
index 000000000..ba9cbc93c
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/setjmp.h
@@ -0,0 +1,64 @@
+/* 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  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'.  CRIS version.  */
+
+#ifndef _SETJMP_H
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
+#endif
+
+/*
+   Note that we save and restore CCR to be able to
+   correctly handle DI/EI.  Note also that the "move x,ccr" does NOT affect
+   the DMA enable bits (E and D).
+
+   jmp_buf[0] - PC
+   jmp_buf[1] - SP (R14)
+   jmp_buf[2] - R13
+   jmp_buf[3] - R12
+   jmp_buf[4] - R11
+   jmp_buf[5] - R10
+   jmp_buf[6] - R9
+   jmp_buf[7] - R8
+   jmp_buf[8] - R7
+   jmp_buf[9] - R6
+   jmp_buf[10] - R5
+   jmp_buf[11] - R4
+   jmp_buf[12] - R3
+   jmp_buf[13] - R2
+   jmp_buf[14] - R1
+   jmp_buf[15] - R0
+   jmp_buf[16] - SRP
+   jmp_buf[17] - CCR
+   */
+
+#define _JBLEN 18
+#if     defined (__USE_MISC) || defined (_ASM)
+#define JB_SP 1
+#endif
+
+#ifndef	_ASM
+typedef int __jmp_buf[_JBLEN];
+#endif
+
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+  ((void *) (address) < (void *) (jmpbuf)[JB_SP])
+
+
diff --git a/libc/sysdeps/linux/cris/bits/shm.h b/libc/sysdeps/linux/cris/bits/shm.h
new file mode 100644
index 000000000..c7070595b
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/shm.h
@@ -0,0 +1,84 @@
+/* Copyright (C) 1995, 1996, 1997 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_SHM_H
+# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
+#endif
+
+#include <sys/types.h>
+
+/* Permission flag for shmget.  */
+#define SHM_R		0400		/* or S_IRUGO from <linux/stat.h> */
+#define SHM_W		0200		/* or S_IWUGO from <linux/stat.h> */
+
+/* Flags for `shmat'.  */
+#define SHM_RDONLY	010000		/* attach read-only else read-write */
+#define SHM_RND		020000		/* round attach address to SHMLBA */
+#define SHM_REMAP	040000		/* take-over region on attach */
+
+/* Commands for `shmctl'.  */
+#define SHM_LOCK	11		/* lock segment (root only) */
+#define SHM_UNLOCK	12		/* unlock segment (root only) */
+
+
+/* Data structure describing a set of semaphores.  */
+struct shmid_ds
+  {
+    struct ipc_perm shm_perm;		/* operation permission struct */
+    int shm_segsz;			/* size of segment in bytes */
+    __time_t shm_atime;			/* time of last shmat() */
+    __time_t shm_dtime;			/* time of last shmdt() */
+    __time_t shm_ctime;			/* time of last change by shmctl() */
+    __ipc_pid_t shm_cpid;		/* pid of creator */
+    __ipc_pid_t shm_lpid;		/* pid of last shmop */
+    unsigned short int shm_nattch;	/* number of current attaches */
+    unsigned short int __shm_npages;	/* size of segment (pages) */
+    unsigned long int *__shm_pages;	/* array of ptrs to frames -> SHMMAX */
+    struct vm_area_struct *__attaches;	/* descriptors for attaches */
+  };
+
+#ifdef __USE_MISC
+
+/* ipcs ctl commands */
+# define SHM_STAT 	13
+# define SHM_INFO 	14
+
+/* shm_mode upper byte flags */
+# define SHM_DEST	01000	/* segment will be destroyed on last detach */
+# define SHM_LOCKED	02000   /* segment will not be swapped */
+
+struct	shminfo
+  {
+    int shmmax;
+    int shmmin;
+    int shmmni;
+    int shmseg;
+    int shmall;
+  };
+
+struct shm_info
+  {
+    int used_ids;
+    unsigned long int shm_tot;	/* total allocated shm */
+    unsigned long int shm_rss;	/* total resident shm */
+    unsigned long int shm_swp;	/* total swapped shm */
+    unsigned long int swap_attempts;
+    unsigned long int swap_successes;
+  };
+
+#endif /* __USE_MISC */
diff --git a/libc/sysdeps/linux/cris/bits/syscalls.h b/libc/sysdeps/linux/cris/bits/syscalls.h
new file mode 100644
index 000000000..5c30e2193
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/syscalls.h
@@ -0,0 +1,10 @@
+/*
+ * nothing needed here until we want pthread support or similar
+ */
+
+#include <features.h>
+/* Do something very evil for now.  Until we include our out syscall
+ * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
+#define _BITS_SYSCALL_H
+#include <asm/unistd.h>
+
diff --git a/libc/sysdeps/linux/cris/bits/wordsize.h b/libc/sysdeps/linux/cris/bits/wordsize.h
new file mode 100644
index 000000000..d6a2fc685
--- /dev/null
+++ b/libc/sysdeps/linux/cris/bits/wordsize.h
@@ -0,0 +1,19 @@
+/* Copyright (C) 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#define __WORDSIZE      32
diff --git a/libc/sysdeps/linux/cris/brk.c b/libc/sysdeps/linux/cris/brk.c
new file mode 100644
index 000000000..7814d52c3
--- /dev/null
+++ b/libc/sysdeps/linux/cris/brk.c
@@ -0,0 +1,31 @@
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <errno.h>
+#include "sysdep.h"
+
+extern void * ___brk_addr;
+
+extern int __init_brk (void);
+
+int brk(void * end_data_seg)
+{
+	if (__init_brk () == 0) {
+		/* Notice that we don't need to save/restore the GOT
+		 * register since that is not call clobbered by the syscall
+		 */
+		
+		asm ("move.d %1,$r10\n\t"
+		     "movu.w " STR(__NR_brk) ",$r9\n\t"
+		     "break 13\n\t"
+		     "move.d $r10, %0"
+		     : "=r" (___brk_addr)
+		     : "g" (end_data_seg)
+		     : "r9", "r10");
+		
+		if (___brk_addr == end_data_seg)
+			return 0;
+		__set_errno(ENOMEM);
+	}
+	return -1;
+	
+}
diff --git a/libc/sysdeps/linux/cris/crt0.c b/libc/sysdeps/linux/cris/crt0.c
new file mode 100644
index 000000000..03b0d6ff3
--- /dev/null
+++ b/libc/sysdeps/linux/cris/crt0.c
@@ -0,0 +1,49 @@
+/* $Id: crt0.c,v 1.1 2002/09/16 08:08:33 tobiasa Exp $ */
+
+/* C base for Linux/CRIS 2.0/2.4
+ */
+
+//#define DEBUG
+
+/* The first piece of initialized data.  */
+int __data_start = 0;
+
+/* N.B.: It is important that this be the first function.
+   This file is the first thing in the text section.  */
+
+void
+_start ()
+{
+	/* on the stack we have argc. we can calculate argv/envp
+	 * from that and the succeeding stack location, but fix so
+	 * we get the right calling convention (regs in r10/r11)
+	 *
+	 * to understand this you really ought to read fs/binfmt_elf.c
+	 */
+	__asm__ volatile("pop $r10");
+	__asm__ volatile("move.d $sp, $r11");
+	__asm__ volatile("jump start1");
+}
+
+void __uClibc_main(int argc, char **argv, char **envp)
+         __attribute__ ((__noreturn__));
+
+static void
+start1 (int argc, char **argv)
+{
+	char** environ;
+
+	/* The environment starts just after ARGV.  */
+	environ = &argv[argc + 1];
+	
+	/* If the first thing after ARGV is the arguments
+	   themselves, there is no environment.  */
+	if ((char *) environ == *argv)
+		/* The environment is empty.  Make environ
+		   point at ARGV[ARGC], which is NULL.  */
+		--environ;
+	
+	/* Leave control to the libc */
+
+	__uClibc_main(argc, argv, environ);
+}
diff --git a/libc/sysdeps/linux/cris/fork.c b/libc/sysdeps/linux/cris/fork.c
new file mode 100644
index 000000000..5ca8a723f
--- /dev/null
+++ b/libc/sysdeps/linux/cris/fork.c
@@ -0,0 +1,10 @@
+#include <sysdep.h>
+
+SYSCALL__ (fork, 0)
+	/* R1 is now 0 for the parent and 1 for the child.  Decrement it to
+	   make it -1 (all bits set) for the parent, and 0 (no bits set)
+	   for the child.  Then AND it with R0, so the parent gets
+	   R0&-1==R0, and the child gets R0&0==0.  */
+     /* i dunno what the blurb above is useful for. we just return. */
+__asm__("ret\n\tnop");
+
diff --git a/libc/sysdeps/linux/cris/ipc.c b/libc/sysdeps/linux/cris/ipc.c
new file mode 100644
index 000000000..574d99fcd
--- /dev/null
+++ b/libc/sysdeps/linux/cris/ipc.c
@@ -0,0 +1,4 @@
+#include <syscall.h>
+
+_syscall6(int, ipc, unsigned int, call, int, first, int, second, int, third,
+          void *, ptr, long, fifth);
diff --git a/libc/sysdeps/linux/cris/libc.map b/libc/sysdeps/linux/cris/libc.map
new file mode 100644
index 000000000..6710c733d
--- /dev/null
+++ b/libc/sysdeps/linux/cris/libc.map
@@ -0,0 +1,3 @@
+U {
+	local: __sigjmp_save;
+};
diff --git a/libc/sysdeps/linux/cris/sbrk.c b/libc/sysdeps/linux/cris/sbrk.c
new file mode 100644
index 000000000..79d924a44
--- /dev/null
+++ b/libc/sysdeps/linux/cris/sbrk.c
@@ -0,0 +1,36 @@
+/* From libc-5.3.12 */
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <errno.h>
+#include "sysdep.h"
+
+extern void * ___brk_addr;
+
+extern int __init_brk (void);
+
+void *
+sbrk(intptr_t increment)
+{
+	if (__init_brk () == 0) {
+		void * tmp = ___brk_addr + increment;
+
+		/* Notice that we don't need to save/restore the GOT
+		 * register since that is not call clobbered by the syscall
+		 */
+		
+		asm ("move.d %1,$r10\n\t"
+		     "movu.w " STR(__NR_brk) ",$r9\n\t"
+		     "break 13\n\t"
+		     "move.d $r10, %0"
+		     : "=r" (___brk_addr)
+		     : "g" (tmp)
+		     : "r9", "r10");
+
+		if (___brk_addr == tmp)
+			return tmp - increment;
+		__set_errno(ENOMEM);
+		return ((void *) -1);
+	}
+	return ((void *) -1);
+}
diff --git a/libc/sysdeps/linux/cris/setjmp.S b/libc/sysdeps/linux/cris/setjmp.S
new file mode 100644
index 000000000..a5ea0e2d8
--- /dev/null
+++ b/libc/sysdeps/linux/cris/setjmp.S
@@ -0,0 +1,76 @@
+/* setjmp for CRIS.
+   Copyright (C) 1995, 1996, 1997 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+#define _ASM
+#define _SETJMP_H
+#include <bits/setjmp.h>
+
+        .syntax no_register_prefix
+
+ENTRY (__sigsetjmp)
+.Local__sigsetjmp:      
+        moveq 1,r9
+        movem sp,[r10+1*4]
+#ifdef __PIC__
+        move.d pc,r9
+        addq 0f-.,r9
+#else
+        move.d 0f,r9
+#endif
+        move.d r9,[r10]
+        move srp,[r10+16*4]
+        PLTJUMP (__sigjmp_save)
+0: /* This is where longjmp returns.  (Don't use "ret" - it's a macro.  */
+        Ret
+        move.d r9,r10
+END (__sigsetjmp)
+	
+/* Binary compatibility entry points.  Having these in separate files
+   is not meaningful and just adds library overhead.  */
+
+ENTRY (__setjmp)
+        ba .Local__sigsetjmp
+        moveq 0,r11
+END (__setjmp)
+
+ENTRY (_setjmp)
+        ba .Local__sigsetjmp
+        moveq 0,r11
+END (_setjmp)
+
+ENTRY (setjmp)
+        ba .Local__sigsetjmp
+        moveq 1,r11
+END (setjmp)
+
+/*
+weak_extern (__setjmp)
+weak_extern (_setjmp)
+weak_extern (setjmp)
+*/
+
+
+
+
+
+
+
+
+
diff --git a/libc/sysdeps/linux/cris/sys/ucontext.h b/libc/sysdeps/linux/cris/sys/ucontext.h
new file mode 100644
index 000000000..5f875453f
--- /dev/null
+++ b/libc/sysdeps/linux/cris/sys/ucontext.h
@@ -0,0 +1,95 @@
+/* Copyright (C) 1997, 1999, 2001 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.  */
+
+/* System V/cris ABI compliant context switching support.  */
+
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H 1
+
+#include <features.h>
+#include <signal.h>
+
+#include <bits/sigcontext.h>
+
+/* Type for general register.  */
+typedef long int greg_t;
+
+/* Number of general registers.  */
+#define NGREG   20
+
+/* Container for all general registers.  */
+typedef greg_t gregset_t[NGREG];
+
+/* Number of each register is the `gregset_t' array.  */
+enum
+{
+  R0 = 0,
+#define R0    R0
+  R1 = 1,
+#define R1    R1
+  R2 = 2,
+#define R2    R2
+  R3 = 3,
+#define R3    R3
+  R4 = 4,
+#define R4    R4
+  R5 = 5,
+#define R5    R5
+  R6 = 6,
+#define R6    R6
+  R7 = 7,
+#define R7    R7
+  R8 = 8,
+#define R8    R8
+  R9 = 9,
+#define R9    R9
+  R10 = 10,
+#define R10    R10
+  R11 = 11,
+#define R11    R11
+  R12 = 12,
+#define R12    R12
+  R13 = 13,
+#define R13    R13
+  R14 = 14,
+#define R14    R14
+  R15 = 15,
+#define R15    R15
+  R_SP = R14,
+#define R_SP    R_SP
+  R_PC = R15,
+#define R_PC    R_PC
+};
+
+/* A placeholder; CRIS does not have any fp regs.  */
+typedef unsigned long fpregset_t;
+
+/* A machine context is exactly a sigcontext.  */
+typedef struct sigcontext mcontext_t;
+
+/* Userlevel context.  */
+typedef struct ucontext
+  {
+    unsigned long int uc_flags;
+    struct ucontext *uc_link;
+    stack_t uc_stack;
+    mcontext_t uc_mcontext;
+    __sigset_t uc_sigmask;
+  } ucontext_t;
+
+#endif /* sys/ucontext.h */
diff --git a/libc/sysdeps/linux/cris/syscall-cris.c b/libc/sysdeps/linux/cris/syscall-cris.c
new file mode 100644
index 000000000..fa923ec9d
--- /dev/null
+++ b/libc/sysdeps/linux/cris/syscall-cris.c
@@ -0,0 +1,41 @@
+/* syscall.c - generalized linux system call interface */
+
+#include <stdarg.h>
+#include <syscall.h>
+#include <errno.h>
+
+/* perform a Linux/CRIS system call with variable number of arguments
+ * put them and the syscall number in the right registers and call
+ * break 13.
+ */
+
+int
+syscall(int number, ...)
+{
+	register long __a __asm__ ("r10");
+	register long __b __asm__ ("r11");
+	register long __c __asm__ ("r12");
+	register long __d __asm__ ("r13");
+	register long __e __asm__ ("r0");
+        va_list args;
+
+        va_start(args, number);
+        __a = va_arg(args, int);
+        __b = va_arg(args, int);
+        __c = va_arg(args, int);
+        __d = va_arg(args, int);
+        __e = va_arg(args, int);
+        va_end(args);
+
+        __asm__ volatile ("movu.w %1,$r9\n\tbreak 13\n\t"
+                : "=r" (__a)
+                : "g" (number), "0" (__a), "r" (__b), "r" (__c), "r" (__d),
+                          "r" (__e)
+                : "r10", "r9");
+
+        if (__a >= 0)
+		return __a;
+
+	errno = -__a;
+        return -1;
+}
diff --git a/libc/sysdeps/linux/cris/syscall.S b/libc/sysdeps/linux/cris/syscall.S
new file mode 100644
index 000000000..d52a6ba05
--- /dev/null
+++ b/libc/sysdeps/linux/cris/syscall.S
@@ -0,0 +1,18 @@
+#include <sys/syscall.h>
+	
+        .globl __syscall_error
+__syscall_error:
+                        
+        neg.d $r10,$r10
+
+        push $r10
+        push $srp
+        jsr __errno_location
+        pop $srp
+        pop $r11
+        move.d $r11,[$r10]
+
+        moveq -1, $r10
+        ret
+        nop
+
diff --git a/libc/sysdeps/linux/cris/sysdep.h b/libc/sysdeps/linux/cris/sysdep.h
new file mode 100644
index 000000000..e01752ae9
--- /dev/null
+++ b/libc/sysdeps/linux/cris/sysdep.h
@@ -0,0 +1,125 @@
+/* Assembler macros for CRIS.
+   Copyright (C) 1999, 2000, 2001 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef C_LABEL
+
+/* Define a macro we can use to construct the asm name for a C symbol.  */
+#ifdef  __STDC__
+#define C_LABEL(name)           name##:
+#else
+#define C_LABEL(name)           name/**/:
+#endif
+
+#endif /* C_LABEL */
+
+#define __STR(x) #x
+#define STR(x) __STR(x)
+
+/* Mark the end of function named SYM.  This is used on some platforms
+   to generate correct debugging information.  */
+#ifndef END
+#define END(sym)
+#endif
+
+#define C_SYMBOL_NAME(name) name
+
+#ifdef	__ASSEMBLER__
+
+/* Syntactic details of assembly-code.  */
+
+/* It is *not* generally true that "ELF uses byte-counts for .align, most
+   others use log2 of count of bytes", like some neighboring configs say.
+   See "align" in gas/read.c which is not overridden by
+   gas/config/obj-elf.c.  It takes a log2 argument.  *Some* targets
+   override it to take a byte argument.  People should read source instead
+   of relying on hearsay.  */
+#define ALIGNARG(log2) log2
+
+#define ASM_GLOBAL_DIRECTIVE .globl 
+#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg
+#define ASM_SIZE_DIRECTIVE(name) .size name,.-name
+
+/* The non-PIC jump is preferred, since it does not stall, and does not
+   invoke generation of a PLT.  These macros assume that $r0 is set up as
+   GOT register.  */
+#ifdef __PIC__
+#define PLTJUMP(_x) \
+  add.d	C_SYMBOL_NAME (_x):PLT,$pc
+
+#define PLTCALL(_x) \
+  jsr [$r0+C_SYMBOL_NAME (_x):GOTPLT16]
+
+#define SETUP_PIC \
+  push	$r0						@ \
+  move.d $pc,$r0					@ \
+  sub.d	.:GOTOFF,$r0
+
+#define TEARDOWN_PIC pop $r0
+#else
+#define PLTJUMP(_x) jump C_SYMBOL_NAME (_x)
+#define PLTCALL(_x) jsr  C_SYMBOL_NAME (_x)
+#define SETUP_PIC
+#define TEARDOWN_PIC
+#endif
+
+/* Define an entry point visible from C.  */
+#define	ENTRY(name) \
+  .text							@ \
+  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (name) 		@ \
+  ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME (name), function)	@ \
+  .align ALIGNARG (2) 					@ \
+  C_LABEL(name)						@ \
+  CALL_MCOUNT
+
+#undef	END
+#define END(name) \
+  ASM_SIZE_DIRECTIVE (C_SYMBOL_NAME (name))
+
+/* If compiled for profiling, call `mcount' at the start of each function.
+   FIXME: Note that profiling is not actually implemented.  This is just
+   example code which might not even compile, though it is believed to be
+   correct.  */
+#ifdef	PROF
+#define CALL_MCOUNT \
+  push	$srp						@ \
+  push	$r9						@ \
+  push	$r10						@ \
+  push	$r11						@ \
+  push	$r12						@ \
+  push	$r13						@ \
+  SETUP_PIC						@ \
+  PLTCALL (mcount)					@ \
+  TEARDOWN_PIC						@ \
+  pop	$r13						@ \
+  pop	$r12						@ \
+  pop	$r11						@ \
+  pop	$r10						@ \
+  pop	$r9						@ \
+  pop	$srp
+#else
+#define CALL_MCOUNT		/* Do nothing.  */
+#endif
+
+/* Since C identifiers are not normally prefixed with an underscore
+   on this system, the asm identifier `syscall_error' intrudes on the
+   C name space.  Make sure we use an innocuous name.  */
+#define	syscall_error	__syscall_error
+#define mcount		_mcount
+
+#endif	/* __ASSEMBLER__ */
diff --git a/libc/sysdeps/linux/cris/vfork.c b/libc/sysdeps/linux/cris/vfork.c
new file mode 100644
index 000000000..54c6a47da
--- /dev/null
+++ b/libc/sysdeps/linux/cris/vfork.c
@@ -0,0 +1,11 @@
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+__pid_t
+__vfork __P ((void))
+{
+  return fork();
+}
+
+weak_alias (__vfork, vfork)