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#! /bin/sh

#  Copyright (C) 2005 Axis Communications.

#  All rights reserved.

#

#  Redistribution and use in source and binary forms, with or without

#  modification, are permitted provided that the following conditions

#  are met:

#

#  1. Redistributions of source code must retain the above copyright

#     notice, this list of conditions and the following disclaimer.

#

#  2. Neither the name of Axis Communications nor the names of its

#     contributors may be used to endorse or promote products derived

#     from this software without specific prior written permission.

#

#  THIS SOFTWARE IS PROVIDED BY AXIS COMMUNICATIONS AND ITS CONTRIBUTORS

#  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AXIS

#  COMMUNICATIONS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

#  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

#  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

#  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

#  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

#  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

#  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

#  POSSIBILITY OF SUCH DAMAGE.

# To avoid an abundance of copyright/license messages for boilerplate

# code, we instead generate them from this file.  Generating the

# function code could also be done automatically, but at the cost of

# slightly more intricate build machinery and/or scattered syscall

# information.  Beware that the cat-lines must match the sed regexp

# "^cat > \([^ ]*\).*".

lu='/* -*- buffer-read-only: t -*-

   THIS FILE IS AUTOMATICALLY GENERATED

   FROM "'$0'".  */

#include "linunistd.h"

#define R(x) return (x); }

'

lui="$lu int"

r=") { R (_Sys_"

cat > close.c <

$lui _close (int fd${r}close (fd))

EOF

cat > execve.c <

$lui _execve (char *path, char **argv, char **env${r}execve (path, argv, env))

EOF

cat > exit.c <

$lu void _exit (int val) { _Sys_exit (val); /* Appease GCC: */ while (1) ; }

EOF

cat > fcntl.c <

$lui _fcntl (int fd, int cmd, long arg${r}fcntl (fd, cmd, arg))

EOF

cat > fork.c <

$lui _fork (void${r}fork ())

EOF

cat > fstat.c <

$lu#include 

#include 

int

_fstat (int fd, struct stat *buf)

{

  struct new_stat ks;

  int retval = _Sys_fstat (fd, &ks);

  /* Blank before filling it in.  */

  memset (buf, 0, sizeof (*buf));

  /* We have to translate from the linux struct new_stat.

     It seems we don't have to translate the contents, though.  */

  buf->st_dev = ks.st_dev;

  buf->st_ino = ks.st_ino;

  buf->st_mode = ks.st_mode;

  buf->st_nlink = ks.st_nlink;

  buf->st_uid = ks.st_uid;

  buf->st_gid = ks.st_gid;

  buf->st_rdev = ks.st_rdev;

  buf->st_size = ks.st_size;

  buf->st_blksize = ks.st_blksize;

  buf->st_blocks = ks.st_blocks;

  buf->st_atime = ks.st_atime;

  buf->st_mtime = ks.st_mtime;

  buf->st_ctime = ks.st_ctime;

  R (retval)

EOF

cat > getpid.c <

$lui _getpid (void${r}getpid ())

EOF

cat > gettod.c <

$lu#include 

#include 

int

_gettimeofday (struct timeval *tp, void *tzp

${r}gettimeofday (tp, tzp))

EOF

cat > isatty.c <

$lu

typedef unsigned int tcflag_t;

typedef unsigned char cc_t;

#define NCCS 19

struct termios {

        tcflag_t c_iflag;               /* input mode flags */

        tcflag_t c_oflag;               /* output mode flags */

        tcflag_t c_cflag;               /* control mode flags */

        tcflag_t c_lflag;               /* local mode flags */

        cc_t c_line;                    /* line discipline */

        cc_t c_cc[NCCS];                /* control characters */

};

/* From asm-etrax100/ioctls.h: beware of updates.  */

#define TCGETS          0x5401

int

_isatty (int fd)

{

  struct termios dummy;

  int save_errno = errno;

  int ret = _Sys_ioctl (fd, TCGETS, (unsigned long) &dummy);

  errno = save_errno;

  R (ret == 0)

EOF

cat > kill.c <

$lui _kill (int pid, int sig${r}kill (pid, sig))

EOF

cat > link.c <

$lui _link (const char *old, const char *new${r}link (old, new))

EOF

cat > lseek.c <

$lui _lseek (int fd, int offset, int whence${r}lseek (fd, offset, whence))

EOF

cat > open.c <

$lui _open (const char *fnam, int flags, int mode${r}open (fnam, flags, mode))

EOF

cat > read.c <

$lui _read (int fd, char *buf, int nbytes${r}read (fd, buf, nbytes))

EOF

cat > rename.c <

$lui _rename (const char *old, const char *new${r}rename (old, new))

EOF

cat > sbrk.c <

$lu

/* From asm-etrax100/mman.h: beware of updates.  */

#define PROT_READ       0x1             /* page can be read */

#define PROT_WRITE      0x2             /* page can be written */

#define MAP_ANONYMOUS   0x20            /* don't use a file */

char *

_sbrk (int d)

{

  static long last_alloc = 0;

  /* FIXME: Things are a whole lot different than elinux.  */

#ifdef __elinux__

  /* We can't promise linear memory from a predetermined location.

     We're NO_MM.  We're paria.  We have to rely on tweaks and unclean

     behavior.  We abuse the fact that the malloc function in newlib

     accepts nonlinear chunks in return to its sbrk calls (with a minor

     patch).  */

  /* We use an "old" type mmap, which takes a pointer to a vector of 6

     longs where the parameters are stored.  */

  long buffer[6];

  /* We can't return memory.  Well we could, but we would have to keep a

     list of previous allocations.  FIXME:  Seems reasonable to do that

     later.  */

  if (d < 0)

    return (char *) last_alloc;

  buffer[3] = MAP_ANONYMOUS;    /* Not associated with a file.  */

  buffer[4] = -1;               /* No file.  */

  buffer[0] = 0;                /* Address 0: let mmap pick one.  */

  buffer[1] = d;                /* Length.  */

  buffer[2] = (PROT_READ | PROT_WRITE); /* Protection flags.  */

  buffer[5] = 0;                /* Offset into file.  */

  last_alloc = _Sys_mmap (buffer);

  return (char *) last_alloc;

#else /* not __elinux__ */

  long prev_brk;

  if (last_alloc == 0)

  {

    last_alloc = _Sys_brk (0);

    if (last_alloc < 0)

      return (char *) -1;

  }

  prev_brk = last_alloc;

  if (_Sys_brk (last_alloc + d) < last_alloc + d)

    return (char *) -1;

  last_alloc += d;

  return (char *) prev_brk;

#endif

}

EOF

cat > stat.c <

$lu#include 

#include 

int

_stat (const char *path, struct stat *buf)

{

  struct new_stat ks;

  int retval = _Sys_stat (path, &ks);

  /* Blank before filling it in.  */

  memset (buf, 0, sizeof (*buf));

  /* We have to translate from the linux struct new_stat.

     It seems we don't have to translate the contents, though.  */

  buf->st_dev = ks.st_dev;

  buf->st_ino = ks.st_ino;

  buf->st_mode = ks.st_mode;

  buf->st_nlink = ks.st_nlink;

  buf->st_uid = ks.st_uid;

  buf->st_gid = ks.st_gid;

  buf->st_rdev = ks.st_rdev;

  buf->st_size = ks.st_size;

  buf->st_blksize = ks.st_blksize;

  buf->st_blocks = ks.st_blocks;

  buf->st_atime = ks.st_atime;

  buf->st_mtime = ks.st_mtime;

  buf->st_ctime = ks.st_ctime;

  R (retval)

EOF

cat > times.c <

$lu#include 

clock_t

_times (struct tms * tp${r}times (tp))

EOF

cat > unlink.c <

$lui _unlink (const char *f${r}unlink (f))

EOF

cat > wait.c <

$lui _wait (int *status${r}wait4 (_getpid(), status, 0, 0))

EOF

cat > write.c <

$lui _write (int fd, char *buf, int nbytes${r}write (fd, buf, nbytes))

EOF

exit 0