2001-11-12 Hans-Peter Nilsson <hp@bitrange.com>

        * libc/include/machine/ieeefp.h: Add support for mmix target.
        * libc/include/machine/setjmp.h: Ditto.
        * configure.host: Ditto.
        * libc/sys/mmixware/Makefile.am, libc/sys/mmixware/_exit.c,
        libc/sys/mmixware/access.c, libc/sys/mmixware/aclocal.m4,
        libc/sys/mmixware/chmod.c, libc/sys/mmixware/chown.c,
        libc/sys/mmixware/close.c, libc/sys/mmixware/configure.in,
        libc/sys/mmixware/creat.c, libc/sys/mmixware/crt0.c,
        libc/sys/mmixware/execv.c, libc/sys/mmixware/execve.c,
        libc/sys/mmixware/fork.c, libc/sys/mmixware/fstat.c,
        libc/sys/mmixware/getpid.c, libc/sys/mmixware/gettime.c,
        libc/sys/mmixware/isatty.c, libc/sys/mmixware/kill.c,
        libc/sys/mmixware/lseek.c, libc/sys/mmixware/open.c,
        libc/sys/mmixware/pipe.c, libc/sys/mmixware/read.c,
        libc/sys/mmixware/sbrk.c, libc/sys/mmixware/setjmp.S,
        libc/sys/mmixware/stat.c, libc/sys/mmixware/sys/syscall.h,
        libc/sys/mmixware/time.c, libc/sys/mmixware/times.c,
        libc/sys/mmixware/unlink.c, libc/sys/mmixware/utime.c,
        libc/sys/mmixware/wait.c, libc/sys/mmixware/write.c: New files.
        * libc/sys/mmixware/configure, libc/sys/mmixware/Makefile.in,
        libc/sys/mmixware/aclocal.m4: Generate.

1 files changed, 49 insertions, 0 deletions

diff --git a/newlib/libc/sys/mmixware/read.c b/newlib/libc/sys/mmixware/read.c
new file mode 100644
index 000000000..b474b807e
--- /dev/null
+++ b/newlib/libc/sys/mmixware/read.c
@@ -0,0 +1,49 @@
+/* read for MMIXware.
+
+   Copyright (C) 2001 Hans-Peter Nilsson.
+
+   Permission to use, copy, modify, and distribute this software is freely
+   granted, provided that this notice is preserved with no changes.
+   THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+   PURPOSE.  */
+
+#include <_ansi.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "sys/syscall.h"
+#include <errno.h>
+
+int
+_read (int file,
+       char *ptr,
+       size_t len)
+{
+  long ret;
+
+  if ((unsigned int) file >= 32 || _MMIX_allocated_filehandle[file] == 0)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  ret = TRAP3f (SYS_Fread, file, ptr, len);
+
+  /* Map the return codes:
+     -1-len: an error.  We return -1.
+     0: success.  We return len.
+     n-len: end-of-file after n chars read.  We return n. */
+  if (ret == 0)
+    return len;
+
+  if (ret == -1 - (long) len)
+    {
+      /* We don't know the nature of the failure, so this is an
+       approximation.  */
+      errno = EIO;
+      return -1;
+    }
+
+  return ret + len;
+}