Microblaze port from the uClinux-dist,

contributed by John Williams <jwilliams@itee.uq.edu.au>

extra/Configs/Config.microblaze

@@ -0,0 +1,49 @@
+#
+# For a description of the syntax of this configuration file,
+# see extra/config/Kconfig-language.txt
+#
+
+mainmenu "uClibc C Library Configuration"
+
+menu "Target Architecture Features and Options"
+
+config ARCH_CFLAGS
+	string
+
+config ARCH_LDFLAGS
+	string
+
+config LIBGCC_CFLAGS
+	string
+
+config HAVE_ELF
+	bool
+	default y
+
+config ARCH_HAS_NO_MMU
+	bool
+	default y
+
+config ARCH_HAS_NO_FPU
+	bool
+	default y
+
+config ARCH_HAS_C_SYMBOL_PREFIX
+	bool
+	default y
+
+config HAVE_NO_PIC
+	bool
+	default y
+
+config CROSS
+        string
+	default "mb-"
+
+source "extra/Configs/Config.in.arch"
+
+endmenu
+
+source "extra/Configs/Config.in"
+
+

extra/Configs/Config.microblaze.default

@@ -0,0 +1,59 @@
+#
+# Automatically generated make config: don't edit
+#
+
+#
+# Target Architecture Features and Options
+#
+HAVE_ELF=y
+ARCH_HAS_NO_MMU=y
+ARCH_HAS_NO_FPU=y
+ARCH_HAS_C_SYMBOL_PREFIX=y
+HAVE_NO_PIC=y
+CROSS="mb-"
+UCLIBC_HAS_FLOATS=y
+UCLIBC_HAS_SOFT_FLOAT=y
+# DO_C99_MATH is not set
+WARNINGS="-Wall"
+KERNEL_SOURCE="/home/jwilliam/uClinux-dist/linux-2.4.x"
+UCLIBC_UCLINUX_BROKEN_MUNMAP=y
+EXCLUDE_BRK=y
+C_SYMBOL_PREFIX="_"
+
+#
+# General Library Settings
+#
+# UCLIBC_HAS_THREADS is not set
+UCLIBC_HAS_LFS=y
+MALLOC=y
+# MALLOC_930716 is not set
+HAS_SHADOW=y
+UCLIBC_HAS_REGEX=y
+UNIX98PTY_ONLY=y
+# ASSUME_DEVPTS is not set
+
+#
+# Networking Support
+#
+UCLIBC_HAS_IPV6=y
+UCLIBC_HAS_RPC=y
+UCLIBC_HAS_FULL_RPC=y
+
+#
+# String and Stdio Support
+#
+# UCLIBC_HAS_WCHAR is not set
+USE_OLD_VFPRINTF=y
+
+#
+# Library Installation Options
+#
+DEVEL_PREFIX="/usr/local/tools/microblaze-elf-gcc"
+SYSTEM_DEVEL_PREFIX="/usr/local"
+DEVEL_TOOL_PREFIX="$(DEVEL_PREFIX)"
+
+#
+# uClibc hacking options
+#
+DODEBUG=y
+# DOASSERTS is not set

libc/sysdeps/linux/microblaze/Makefile

@@ -0,0 +1,65 @@
+# Makefile for uClibc
+#
+# Copyright (C) 2001,2002  NEC Corporation
+# Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
+#
+# 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
+
+CFLAGS += -I..
+SFLAGS = $(CFLAGS) -D__ASSEMBLER -DASM_GLOBAL_DIRECTIVE=.globl
+
+TARGET_MACHINE_TYPE=$(shell $(CC) -dumpmachine)
+
+CRT0_SRC = crt0.S
+CRT0_OBJ = crt0.o crt1.o
+
+SSRC = setjmp.S __longjmp.S vfork.S
+SOBJS = $(patsubst %.S,%.o, $(SSRC))
+
+CSRC = _mmap.c syscall.c clone.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) $(TOPDIR)lib/
+
+$(CRT0_OBJ): $(CRT0_SRC)
+	$(CC) $(CFLAGS) -DL_$* $< -c -o $*.o
+	$(STRIPTOOL) -x -R .note -R .comment $*.o
+
+$(SOBJS): %.o : %.S
+	$(CC) $(SFLAGS) -c $< -o $@
+	$(STRIPTOOL) -x -R .note -R .comment $*.o
+
+$(COBJS): %.o : %.c
+	$(CC) $(CFLAGS) -c $< -o $@
+	$(STRIPTOOL) -x -R .note -R .comment $*.o
+
+headers:
+
+clean:
+	rm -f *.[oa] *~ core
+	rm -f bits/sysnum.h
+

libc/sysdeps/linux/microblaze/__longjmp.S

@@ -0,0 +1,47 @@
+/*
+ * libc/sysdeps/linux/microblaze/longjmp.S -- `longjmp' for microblaze
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#define _SETJMP_H
+#define _ASM
+#include <bits/setjmp.h>
+
+#include <clinkage.h>
+
+	.text
+C_ENTRY(__longjmp):
+	/* load registers from memory to r5 (arg0)*/
+	lwi	r1, r5, 0
+	lwi	r15, r5, 4
+	lwi	r18, r5, 8
+	lwi	r19, r5, 12
+	lwi	r20, r5, 16
+	lwi	r21, r5, 20 
+	lwi	r22, r5, 24 
+	lwi	r23, r5, 28
+	lwi	r24, r5, 32 
+	lwi	r25, r5, 36
+	lwi	r26, r5, 40
+	lwi	r27, r5, 44
+	lwi	r28, r5, 48
+	lwi	r29, r5, 52
+	lwi	r30, r5, 56
+	
+	addi	r3, r0, 1		// return val
+	rtsd	r15, 8			// normal return
+	nop
+
+C_END(__longjmp)
+
+.weak C_SYMBOL_NAME(__sigprocmask)
+C_SYMBOL_NAME(__sigprocmask) = C_SYMBOL_NAME(sigprocmask)

libc/sysdeps/linux/microblaze/_mmap.c

@@ -0,0 +1,9 @@
+/* Use new style mmap for microblaze */
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <sys/syscall.h>
+
+_syscall6 (__ptr_t, mmap, __ptr_t, addr, size_t, len, int, prot,
+	   int, flags, int, fd, __off_t, offset);

libc/sysdeps/linux/microblaze/bits/byteswap.h

@@ -0,0 +1,41 @@
+/*
+ * libc/sysdeps/linux/microblaze/bits/byteswap.h -- Macros to swap the order
+ * 	of bytes in integer values
+ *
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *  Copyright (C) 1997,1998,2001  Free Software Foundation, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ */
+
+#if !defined _BYTESWAP_H && !defined _NETINET_IN_H
+# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
+#endif
+
+/* Swap bytes in 16 bit value.  */
+#define __bswap_constant_16(x) \
+  ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
+
+# define __bswap_16(x) __bswap_constant_16 (x)
+
+/* Swap bytes in 32 bit value.  */
+#define __bswap_constant_32(x) \
+  ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) | \
+   (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
+
+# define __bswap_32(x) __bswap_constant_32 (x)
+
+#if defined __GNUC__ && __GNUC__ >= 2
+/* Swap bytes in 64 bit value.  */
+# define __bswap_64(x)							      \
+     (__extension__							      \
+      ({ union { unsigned long long int __ll;				      \
+		 unsigned long int __l[2]; } __bswap_64_v, __bswap_64_r;      \
+	 __bswap_64_v.__ll = (x);					      \
+	 __bswap_64_r.__l[0] = __bswap_32 (__bswap_64_v.__l[1]);	      \
+	 __bswap_64_r.__l[1] = __bswap_32 (__bswap_64_v.__l[0]);	      \
+	 __bswap_64_r.__ll; }))
+#endif

libc/sysdeps/linux/microblaze/bits/endian.h

@@ -0,0 +1,20 @@
+/*
+ * libc/sysdeps/linux/microblaze/bits/endian.h -- Define processor endianess
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#define __BYTE_ORDER __BIG_ENDIAN

libc/sysdeps/linux/microblaze/bits/fcntl.h

@@ -0,0 +1,180 @@
+/* O_*, F_*, FD_* bit values for Linux.
+   Copyright (C) 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	_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_DIRECTORY	 040000	/* Must be a directory.	 */
+# define O_NOFOLLOW	0100000	/* Do not follow links.	 */
+# define O_DIRECT	0200000	/* Direct disk access.	*/
+# define O_STREAMING	04000000/* streaming access */
+#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	0400000
+#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.  */
+#ifndef __USE_FILE_OFFSET64
+# 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).	*/
+#else
+# define F_GETLK	F_GETLK64  /* Get record locking info.	*/
+# define F_SETLK	F_SETLK64  /* Set record locking info (non-blocking).*/
+# define F_SETLKW	F_SETLKW64 /* Set record locking info (blocking).  */
+#endif
+#define F_GETLK64	12	/* Get record locking info.  */
+#define F_SETLK64	13	/* Set record locking info (non-blocking).  */
+#define F_SETLKW64	14	/* Set record locking info (blocking).	*/
+
+#if defined __USE_BSD || defined __USE_XOPEN2K
+# 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
+
+#ifdef __USE_GNU
+# define F_SETLEASE	1024	/* Set a lease.	 */
+# define F_GETLEASE	1025	/* Enquire what lease is active.  */
+# define F_NOTIFY	1026	/* Request notfications on a directory.	 */
+#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
+
+#ifdef __USE_GNU
+# define LOCK_MAND	32	/* This is a mandatory flock:	*/
+# define LOCK_READ	64	/* ... which allows concurrent read operations.	 */
+# define LOCK_WRITE	128	/* ... which allows concurrent write operations.  */
+# define LOCK_RW	192	/* ... Which allows concurrent read & write operations.	 */
+#endif
+
+#ifdef __USE_GNU
+/* Types of directory notifications that may be requested with F_NOTIFY.  */
+# define DN_ACCESS	0x00000001	/* File accessed.  */
+# define DN_MODIFY	0x00000002	/* File modified.  */
+# define DN_CREATE	0x00000004	/* File created.  */
+# define DN_DELETE	0x00000008	/* File removed.  */
+# define DN_RENAME	0x00000010	/* File renamed.  */
+# define DN_ATTRIB	0x00000020	/* File changed attibutes.  */
+# define DN_MULTISHOT	0x80000000	/* Don't remove notifier.  */
+#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.  */
+
+/* Advise to `posix_fadvise'.  */
+#ifdef __USE_XOPEN2K
+# define POSIX_FADV_NORMAL	0 /* No further special treatment.  */
+# define POSIX_FADV_RANDOM	1 /* Expect random page references.  */
+# define POSIX_FADV_SEQUENTIAL	2 /* Expect sequential page references.	 */
+# define POSIX_FADV_WILLNEED	3 /* Will need these pages.  */
+# define POSIX_FADV_DONTNEED	4 /* Don't need these pages.  */
+# define POSIX_FADV_NOREUSE	5 /* Data will be accessed once.  */
+#endif

libc/sysdeps/linux/microblaze/bits/kernel_stat.h

@@ -0,0 +1,62 @@
+/* Stat structure for linux/microblaze*/
+
+#ifndef _BITS_STAT_STRUCT_H
+#define _BITS_STAT_STRUCT_H
+
+struct kernel_stat
+{
+  __kernel_dev_t	st_dev;
+  __kernel_ino_t	st_ino;
+  __kernel_mode_t	st_mode;
+  __kernel_nlink_t 	st_nlink;
+  __kernel_uid_t 	st_uid;
+  __kernel_gid_t 	st_gid;
+  __kernel_dev_t	st_rdev;
+  __kernel_off_t	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;
+};
+
+struct kernel_stat64
+{
+  __kernel_dev_t	st_dev;
+  unsigned long		__unused0;
+  unsigned long		__unused1;
+
+  __kernel_ino64_t	st_ino;
+
+  __kernel_mode_t	st_mode;
+  __kernel_nlink_t 	st_nlink;
+
+  __kernel_uid_t	st_uid;
+  __kernel_gid_t	st_gid;
+
+  __kernel_dev_t	st_rdev;
+  unsigned long		__unused2;
+  unsigned long		__unused3;
+
+  __kernel_loff_t	st_size;
+	unsigned long	st_blksize;
+
+  unsigned long		__unused4; /* future possible st_blocks high bits */
+	unsigned long	st_blocks;	/* Number 512-byte blocks allocated. */
+
+	unsigned long	st_atime;
+  unsigned long		__unused5;
+
+	unsigned long	st_mtime;
+  unsigned long		__unused6;
+
+	unsigned long	st_ctime;
+  unsigned long		__unused7; /* high 32 bits of ctime someday */
+};
+
+#endif	/*  _BITS_STAT_STRUCT_H */

libc/sysdeps/linux/microblaze/bits/kernel_types.h

@@ -0,0 +1,54 @@
+/*
+ * sysdeps/linux/microblaze/bits/kernel_types.h -- Kernel versions of standard types
+ *
+ *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001,2002  NEC Corporation
+ *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_POSIX_TYPES_H__
+#define __MICROBLAZE_POSIX_TYPES_H__
+
+typedef unsigned int	__kernel_dev_t;
+typedef unsigned long	__kernel_ino_t;
+typedef unsigned long long __kernel_ino64_t;
+typedef unsigned int	__kernel_mode_t;
+typedef unsigned int	__kernel_nlink_t;
+typedef long		__kernel_off_t;
+typedef long long	__kernel_loff_t;
+typedef int		__kernel_pid_t;
+typedef unsigned short	__kernel_ipc_pid_t;
+typedef unsigned int	__kernel_uid_t;
+typedef unsigned int	__kernel_gid_t;
+typedef unsigned int	__kernel_size_t;
+typedef int		__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;
+
+typedef struct {
+#ifdef __USE_ALL
+	int val[2];
+#else
+	int __val[2];
+#endif
+} __kernel_fsid_t;
+
+#endif /* __MICROBLAZE_POSIX_TYPES_H__ */

libc/sysdeps/linux/microblaze/bits/mman.h

@@ -0,0 +1,98 @@
+/* Definitions for POSIX memory map interface.  Linux/microblaze version.
+   Copyright (C) 1997, 1999, 2001, 2002 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.  */
+
+/* These are the bits used by 4.4 BSD and its derivatives.  On systems
+   (such as GNU) where these facilities are not system services but can be
+   emulated in the C library, these are the definitions we emulate.  */
+
+#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.  */
+
+/* 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
+
+
+/* Flags for `mlockall' (can be OR'd together).  */
+#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

libc/sysdeps/linux/microblaze/bits/poll.h

@@ -0,0 +1,43 @@
+/* Copyright (C) 1997, 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.  */
+
+#ifndef _SYS_POLL_H
+# error "Never use <bits/poll.h> directly; include <sys/poll.h> instead."
+#endif
+
+/* Event types that can be polled for.  These bits may be set in `events'
+   to indicate the interesting event types; they will appear in `revents'
+   to indicate the status of the file descriptor.  */
+#define POLLIN		0x001		/* There is data to read.  */
+#define POLLPRI		0x002		/* There is urgent data to read.  */
+#define POLLOUT		0x004		/* Writing now will not block.  */
+
+#ifdef __USE_XOPEN
+/* These values are defined in XPG4.2.  */
+# define POLLRDNORM	0x040		/* Normal data may be read.  */
+# define POLLRDBAND	0x080		/* Priority data may be read.  */
+# define POLLWRNORM	POLLOUT		/* Writing now will not block.  */
+# define POLLWRBAND	0x100		/* Priority data may be written.  */
+#endif
+
+/* Event types always implicitly polled for.  These bits need not be set in
+   `events', but they will appear in `revents' to indicate the status of
+   the file descriptor.  */
+#define POLLERR		0x008		/* Error condition.  */
+#define POLLHUP		0x010		/* Hung up.  */
+#define POLLNVAL	0x020		/* Invalid polling request.  */

libc/sysdeps/linux/microblaze/bits/select.h

@@ -0,0 +1,58 @@
+/*
+ * include/bits/select.h -- fd_set operations
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *  Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ */
+
+#ifndef _SYS_SELECT_H
+# error "Never use <bits/select.h> directly; include <sys/select.h> instead."
+#endif
+
+#ifdef __GNUC__
+
+/* We don't use `memset' because this would require a prototype and
+   the array isn't too big.  */
+#define __FD_ZERO(s)							      \
+  do {									      \
+    unsigned int __i;							      \
+    fd_set *__arr = (s);						      \
+    for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i)	      \
+      __FDS_BITS (__arr)[__i] = 0;					      \
+  } while (0)
+
+#define __FD_SET(fd, s)						       	      \
+  do {									      \
+	int __fd = (fd);						      \
+	unsigned int *__addr = (unsigned int *)&__FDS_BITS (s);		      \
+	*__addr |= (1 << __fd);    					      \
+  } while (0)
+
+#define __FD_CLR(fd, s)							      \
+  do {									      \
+	int __fd = (fd);						      \
+	unsigned int *__addr = (unsigned int *)&__FDS_BITS (s);		      \
+	*__addr &= ~(1 << __fd);					      \
+  } while (0)
+
+#define __FD_ISSET(fd, s)						      \
+  ({									      \
+	int __fd = (fd);						      \
+	unsigned int *__addr = (unsigned int *)&__FDS_BITS (s);		      \
+	int res;							      \
+	res = (*__addr & (1 << fd)) ? 1 : 0;				      \
+  })
+
+#else /* !__GNUC__ */
+
+#define __FD_SET(d, s)     (__FDS_BITS (s)[__FDELT(d)] |= __FDMASK(d))
+#define __FD_CLR(d, s)     (__FDS_BITS (s)[__FDELT(d)] &= ~__FDMASK(d))
+#define __FD_ISSET(d, s)   ((__FDS_BITS (s)[__FDELT(d)] & __FDMASK(d)) != 0)
+
+#endif /* __GNUC__ */

libc/sysdeps/linux/microblaze/bits/setjmp.h

@@ -0,0 +1,38 @@
+/*
+ * libc/sysdeps/linux/microblaze/bits/setjmp.h -- microblaze version of `jmp_buf' type
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#ifndef _SETJMP_H
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
+#endif
+
+#ifndef _ASM
+typedef struct
+  {
+    /* Stack pointer.  */
+    void *__sp;
+
+    /* Link pointer.  */
+    void *__lp;
+
+    /* Callee-saved registers r18-r30.  */
+    int __regs[13];
+  } __jmp_buf[1];
+#endif
+
+#define JB_SIZE		(4 * 15)
+
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+  ((__ptr_t) (address) < &(jmpbuf)[0].__sp)

libc/sysdeps/linux/microblaze/bits/syscalls.h

@@ -0,0 +1,19 @@
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
+#endif
+
+#include <features.h>
+
+/* Do something very evil for now.  Until we create our own syscall
+ * macros, short circuit bits/sysnum.h  and use asm/unistd.h instead */
+#include <asm/unistd.h>
+
+/* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel
+ * header files.  It also defines the traditional `SYS_<name>' macros for older
+ * programs.  */
+#include <bits/sysnum.h>
+
+#endif /* _BITS_SYSCALLS_H */
+

libc/sysdeps/linux/microblaze/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 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 __WORDSIZE	32

libc/sysdeps/linux/microblaze/clinkage.h

@@ -0,0 +1,15 @@
+/*
+ * libc/sysdeps/linux/microblaze/clinkage.h -- Macros for C symbols in assembler
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <asm/clinkage.h>

libc/sysdeps/linux/microblaze/clone.c

@@ -0,0 +1,52 @@
+/*
+ * libc/sysdeps/linux/microblaze/clone.c -- `clone' syscall for linux/microblaze
+ *
+ *  Copyright (C) 2003     John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2002,03  NEC Electronics Corporation
+ *  Copyright (C) 2002,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#include <errno.h>
+#include <sys/syscall.h>
+
+int
+clone (int (*fn)(void *arg), void *child_stack, int flags, void *arg)
+{
+  register unsigned long rval asm (SYSCALL_RET) = -EINVAL;
+
+  if (fn && child_stack)
+    {
+      register unsigned long syscall asm (SYSCALL_NUM);
+      register unsigned long arg0 asm (SYSCALL_ARG0);
+      register unsigned long arg1 asm (SYSCALL_ARG1);
+
+      /* Clone this thread.  */
+      arg0 = flags;
+      arg1 = (unsigned long)child_stack;
+      syscall = __NR_clone;
+      asm volatile ("bralid r17, trap;nop;" 
+		    : "=r" (rval), "=r" (syscall)
+		    : "1" (syscall), "r" (arg0), "r" (arg1)
+		    : SYSCALL_CLOBBERS);
+
+      if (rval == 0)
+	/* In child thread, call FN and exit.  */
+	{
+	  arg0 = (*fn) (arg);
+	  syscall = __NR_exit;
+	  asm volatile ("bralid r17, trap;nop;" 
+			: "=r" (rval), "=r" (syscall)
+			: "1" (syscall), "r" (arg0)
+			: SYSCALL_CLOBBERS);
+	}
+    }
+
+  __syscall_return (int, rval);
+}

libc/sysdeps/linux/microblaze/crt0.S

@@ -0,0 +1,47 @@
+/*
+ * libc/sysdeps/linux/microblaze/crt0.S -- Initial program entry point for linux/microblaze
+ *
+ *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001,2002  NEC Corporation
+ *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <clinkage.h>
+
+/* Upon entry, the stack contains the following data:
+	argc, argv[0], ..., argv[argc-1], 0, envp[0], ..., 0
+*/
+
+	.text
+C_ENTRY(_start):	
+	lw	r5, r0, r1		// Arg 0: argc
+
+	addi	r6, r1, 4		// Arg 1: argv
+
+					// Arg 2: envp
+	addi	r3, r5, 1		// skip argc elements to get envp start
+					// ...plus the NULL at the end of argv
+	add	r3, r3, r3		// Make word offset
+	add	r3, r3, r3
+	add	r7, r6, r3		// add to argv to get offset
+
+	// Load SDAs
+	la	r2, r0, C_SYMBOL_NAME(_SDA_BASE_)
+	la	r13, r0, C_SYMBOL_NAME(_SDA2_BASE_)
+
+	// tail-call uclibc's startup routine
+	brid	C_SYMBOL_NAME(__uClibc_main)
+	nop
+
+
+/* Stick in a dummy reference to `main', so that if an application
+   is linking when the `main' function is in a static library (.a)
+   we can be sure that `main' actually gets linked in.  */
+L_dummy_main_reference:
+	.long	C_SYMBOL_NAME(main)

libc/sysdeps/linux/microblaze/longjmp.S

@@ -0,0 +1,53 @@
+/*
+ * libc/sysdeps/linux/microblaze/longjmp.S -- `longjmp' for microblaze
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#define _SETJMP_H
+#define _ASM
+#include <bits/setjmp.h>
+
+#include <clinkage.h>
+
+	.text
+C_ENTRY(__longjmp):
+	/* load registers from memory to r5 (arg0)*/
+	lwi	r1, r5, 0
+	lwi	r15, r5, 4
+	lwi	r18, r5, 8
+	lwi	r19, r5, 12
+	lwi	r20, r5, 16
+	lwi	r21, r5, 20 
+	lwi	r22, r5, 24 
+	lwi	r23, r5, 28
+	lwi	r24, r5, 32 
+	lwi	r25, r5, 36
+	lwi	r26, r5, 40
+	lwi	r27, r5, 44
+	lwi	r28, r5, 48
+	lwi	r29, r5, 52
+	lwi	r30, r5, 56
+	
+	addi	r3, r0, 1		// return val
+	rtsd	r15, 8			// normal return
+	nop
+
+C_END(__longjmp)
+
+.weak C_SYMBOL_NAME(longjmp)
+C_SYMBOL_NAME(longjmp) = C_SYMBOL_NAME(__longjmp)
+
+.weak C_SYMBOL_NAME(siglongjmp)
+C_SYMBOL_NAME(siglongjmp) = C_SYMBOL_NAME(__longjmp)
+
+.weak C_SYMBOL_NAME(__sigprocmask)
+C_SYMBOL_NAME(__sigprocmask) = C_SYMBOL_NAME(sigprocmask)

libc/sysdeps/linux/microblaze/setjmp.S

@@ -0,0 +1,53 @@
+/*
+ * libc/sysdeps/linux/microblaze/setjmp.S -- `setjmp' for microblaze
+ *
+ *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001,2002  NEC Corporation
+ *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#define _SETJMP_H
+#define _ASM
+#include <bits/setjmp.h>
+
+#include <clinkage.h>
+
+	.text
+C_ENTRY(setjmp):
+	addi	r6, r0, 1			/* Save the signal mask.  */
+	braid	C_SYMBOL_NAME(__sigsetjmp)
+	nop
+
+	.globl C_SYMBOL_NAME(_setjmp)
+C_SYMBOL_NAME(_setjmp):
+	add	r6, r0, r0			/* Don't save the signal mask.  */
+
+	.globl C_SYMBOL_NAME(__sigsetjmp)
+C_SYMBOL_NAME(__sigsetjmp):
+	/* Save registers relative to r5 (arg0)*/
+	swi	r1, r5, 0			/* stack pointer */
+	swi	r15, r5, 4			/* link register */
+	swi	r18, r5, 8			/* assembler temp */
+	swi	r19, r5, 12			/* now call-preserved regs */
+	swi	r20, r5, 16
+	swi	r21, r5, 20
+	swi	r22, r5, 24
+	swi	r23, r5, 28
+	swi	r24, r5, 32
+	swi	r25, r5, 36
+	swi	r26, r5, 40
+	swi	r27, r5, 44
+	swi	r28, r5, 48
+	swi	r29, r5, 52
+	swi	r30, r5, 56
+
+	/* Make a tail call to __sigjmp_save; it takes the same args.  */
+	braid	C_SYMBOL_NAME(__sigjmp_save)
+	nop
+C_END(setjmp)

libc/sysdeps/linux/microblaze/sys/ptrace.h

@@ -0,0 +1,94 @@
+/* `ptrace' debugger support interface.  Linux/microblaze version.
+   Copyright (C) 2001, 2002 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_PTRACE_H
+#define _SYS_PTRACE_H	1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* Type of the REQUEST argument to `ptrace.'  */
+enum __ptrace_request
+{
+  /* Indicate that the process making this request should be traced.
+     All signals received by this process can be intercepted by its
+     parent, and its parent can use the other `ptrace' requests.  */
+  PTRACE_TRACEME = 0,
+#define PT_TRACE_ME PTRACE_TRACEME
+
+  /* Return the word in the process's text space at address ADDR.  */
+  PTRACE_PEEKTEXT = 1,
+#define PT_READ_I PTRACE_PEEKTEXT
+
+  /* Return the word in the process's data space at address ADDR.  */
+  PTRACE_PEEKDATA = 2,
+#define PT_READ_D PTRACE_PEEKDATA
+
+  /* Return the word in the process's user area at offset ADDR.  */
+  PTRACE_PEEKUSER = 3,
+#define PT_READ_U PTRACE_PEEKUSER
+
+  /* Write the word DATA into the process's text space at address ADDR.  */
+  PTRACE_POKETEXT = 4,
+#define PT_WRITE_I PTRACE_POKETEXT
+
+  /* Write the word DATA into the process's data space at address ADDR.  */
+  PTRACE_POKEDATA = 5,
+#define PT_WRITE_D PTRACE_POKEDATA
+
+  /* Write the word DATA into the process's user area at offset ADDR.  */
+  PTRACE_POKEUSER = 6,
+#define PT_WRITE_U PTRACE_POKEUSER
+
+  /* Continue the process.  */
+  PTRACE_CONT = 7,
+#define PT_CONTINUE PTRACE_CONT
+
+  /* Kill the process.  */
+  PTRACE_KILL = 8,
+#define PT_KILL PTRACE_KILL
+
+  /* Attach to a process that is already running. */
+  PTRACE_ATTACH = 0x10,
+#define PT_ATTACH PTRACE_ATTACH
+
+  /* Detach from a process attached to with PTRACE_ATTACH.  */
+  PTRACE_DETACH = 0x11,
+#define PT_DETACH PTRACE_DETACH
+
+  /* Continue and stop at the next (return from) syscall.  */
+  PTRACE_SYSCALL = 24
+#define PT_SYSCALL PTRACE_SYSCALL
+};
+
+/* Perform process tracing functions.  REQUEST is one of the values
+   above, and determines the action to be taken.
+   For all requests except PTRACE_TRACEME, PID specifies the process to be
+   traced.
+
+   PID and the other arguments described above for the various requests should
+   appear (those that are used for the particular request) as:
+     pid_t PID, void *ADDR, int DATA, void *ADDR2
+   after REQUEST.  */
+extern long int ptrace (enum __ptrace_request __request, ...) __THROW;
+
+__END_DECLS
+
+#endif /* _SYS_PTRACE_H */

libc/sysdeps/linux/microblaze/sys/ucontext.h

@@ -0,0 +1,41 @@
+/* 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 _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H	1
+
+#include <features.h>
+#include <signal.h>
+
+/* We need the signal context definitions even if they are not used
+   included in <signal.h>.  */
+#include <bits/sigcontext.h>
+
+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 */

libc/sysdeps/linux/microblaze/syscall.c

@@ -0,0 +1,51 @@
+/*
+ * libc/sysdeps/linux/microblaze/syscall.c -- generic syscall function for linux/microblaze
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2002  NEC Corporation
+ *  Copyright (C) 2002  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <errno.h>
+#include <sys/syscall.h>
+
+typedef unsigned long arg_t;
+
+/* Invoke `system call' NUM, passing it the remaining arguments.
+   This is completely system-dependent, and not often useful.  */
+long
+syscall (long num, arg_t a1, arg_t a2, arg_t a3, arg_t a4, arg_t a5, arg_t a6)
+{
+  /* We don't know how many arguments are valid, so A5 and A6 are fetched
+     off the stack even for (the majority of) system calls with fewer
+     arguments; hopefully this won't cause any problems.  A1-A4 are in
+     registers, so they're OK.  */
+  register arg_t a asm (SYSCALL_ARG0) = a1;
+  register arg_t b asm (SYSCALL_ARG1) = a2;
+  register arg_t c asm (SYSCALL_ARG2) = a3;
+  register arg_t d asm (SYSCALL_ARG3) = a4;
+  register arg_t e asm (SYSCALL_ARG4) = a5;
+  register arg_t f asm (SYSCALL_ARG5) = a6;
+  register unsigned long syscall asm (SYSCALL_NUM) = num;
+  register unsigned long ret asm (SYSCALL_RET);
+	unsigned long ret_sav;
+
+  *((unsigned long *)0xFFFF4004) = (unsigned int)('+');
+  asm ("brlid r17, 08x; nop;" 
+       : "=r" (ret)
+       : "r" (syscall), "r" (a), "r" (b), "r" (c), "r" (d), "r" (e), "r" (f)
+       : SYSCALL_CLOBBERS);
+	
+  ret_sav=ret;
+  *((unsigned long *)0xFFFF4004) = (unsigned int)('-');
+
+
+
+  __syscall_return (long, ret);
+}

libc/sysdeps/linux/microblaze/vfork.S

@@ -0,0 +1,45 @@
+/*
+ * libc/sysdeps/linux/microblaze/vfork.S -- `vfork' syscall for linux/microblaze
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#define _SYSCALL_H
+#include <bits/sysnum.h>
+
+#include <clinkage.h>
+
+/* Clone the calling process, but without copying the whole address space.
+   The calling process is suspended until the new process exits or is
+   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
+   and the process ID of the new process to the old process.  */
+
+.global C_SYMBOL_NAME(errno)
+
+C_ENTRY (__vfork):
+	addi	r12, r0, SYS_vfork
+	bralid	r17, 0x08;
+	nop
+	addi	r4, r3, 125		// minimum err value
+	blti	r4, 1f			// is r3 < -125?
+	rtsd	r15, 8			// normal return
+	nop
+1:	sub 	r3, r3, r0		// r3 = -r3
+	swi	r3, r0, C_SYMBOL_NAME(errno);
+	rtsd	r15, 8			// error return
+	nop
+C_END(__vfork)
+
+.weak	C_SYMBOL_NAME(vfork)
+C_SYMBOL_NAME(vfork) = C_SYMBOL_NAME(__vfork)