Remove obsolete ARC system

ARC architecture specific files has been added ages ago in newlib/libc/sys,
but with invention of libgloss those files should be moved from newlib to
libgloss.

newlib/ChangeLog:
2015-11-12  Anton Kolesov  <Anton.Kolesov@synopsys.com>

	* configure.host: Remove ARC system.
	* libc/sys/configure: Likewise.
	* libc/sys/configure.in: Likewise.
	* libc/sys/arc/Makefile.am: Likewise.
	* libc/sys/arc/Makefile.in: Likewise.
	* libc/sys/arc/aclocal.m4: Likewise.
	* libc/sys/arc/configure: Likewise.
	* libc/sys/arc/configure.in: Likewise.
	* libc/sys/arc/crt0.S: Likewise.
	* libc/sys/arc/dummy.S: Likewise.
	* libc/sys/arc/isatty.c: Likewise.
	* libc/sys/arc/mem-layout.c: Likewise.
	* libc/sys/arc/sbrk.c: Likewise.
	* libc/sys/arc/sys/syscall.h: Likewise.
	* libc/sys/arc/syscalls.c: Likewise.

1 files changed, 0 insertions, 131 deletions

diff --git a/newlib/libc/sys/arc/syscalls.c b/newlib/libc/sys/arc/syscalls.c
deleted file mode 100644
index 9c578451a..000000000
--- a/newlib/libc/sys/arc/syscalls.c
+++ /dev/null
@@ -1,131 +0,0 @@
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/syscall.h>
-#include <_ansi.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdarg.h>
-#include <reent.h>
-
-_ssize_t
-_read_r (struct _reent *r, int fd, void *buf, size_t nbytes)
-{
-  int err;
-  _ssize_t rc;
-
-  SYSCALL (SYS_read, rc, err, fd, buf, nbytes);
-  if (err)
-    __errno_r (r) = err;
-  return rc;
-}
-
-_ssize_t
-_write_r (struct _reent *r, int fd, const void *buf, size_t nbytes)
-{
-  int err;
-  _ssize_t rc;
-
-  SYSCALL (SYS_write, rc, err, fd, buf, nbytes);
-  if (err)
-    __errno_r (r) = err;
-  return rc;
-}
-
-/* FIXME: The prototype in <fcntl.h> for open() uses ...,
-   but reent.h uses int.  */
-
-int
-_open_r (struct _reent *r, const char *buf, int flags, int mode)
-{
-  int rc,err;
-#if 0
-  int mode;
-  va_list ap;
-
-  va_start (ap, flags);
-  mode = va_arg (ap, int);
-  va_end (ap);
-#endif
-
-  SYSCALL (SYS_open, rc, err, buf, flags, mode);
-  if (err)
-    __errno_r (r) = err;
-  return rc;
-}
-
-int
-_close_r (struct _reent *r, int fd)
-{
-  int rc,err;
-
-  SYSCALL (SYS_close, rc, err, fd, 0, 0);
-  if (err)
-    __errno_r (r) = err;
-  return rc;
-}
-
-off_t
-_lseek_r (struct _reent *r, int fd,  off_t offset, int whence)
-{
-  int err;
-  off_t rc;
-
-  SYSCALL (SYS_lseek, rc, err, fd, offset, whence);
-  if (err)
-    __errno_r (r) = err;
-  return rc;
-}
-
-int
-_fstat_r (struct _reent *r, int fd, struct stat *buf)
-{
-  int rc,err;
-
-  SYSCALL (SYS_fstat, rc, err, fd, buf, 0);
-  if (err)
-    __errno_r (r) = err;
-  return rc;
-}
-
-/* FIXME: Shouldn't this be _exit_r?  */
-
-void
-_exit (int ret)
-{
-  int rc,err;
-
-  SYSCALL (SYS_exit, rc, err, ret, 0, 0);
-
-  /* If that failed, use an infinite loop.  */
-  while (1)
-    continue;
-}
-
-time_t
-_time (time_t *timer)
-{
-  return 0;
-}
-
-int
-_creat_r (struct _reent *r, const char *path, int mode)
-{
-  return _open_r (r, path, O_CREAT | O_TRUNC, mode);
-}
-
-int
-_getpid_r (struct _reent *r)
-{
-  return 42;
-}
-
-int
-_kill_r (struct _reent *r, int pid, int sig)
-{
-  int rc,err;
-
-  SYSCALL (SYS_kill, rc, err, pid, sig, 0);
-  if (err)
-    __errno_r (r) = err;
-  return rc;
-}