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, 41 insertions, 0 deletions

diff --git a/newlib/libc/sys/mmixware/sbrk.c b/newlib/libc/sys/mmixware/sbrk.c
new file mode 100644
index 000000000..5d256127a
--- /dev/null
+++ b/newlib/libc/sys/mmixware/sbrk.c
@@ -0,0 +1,41 @@
+/* sbrk 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"
+
+extern char *_Sbrk_high;
+
+/* When the program is loaded, the first location in Pool_Segment holds
+   the first available octabyte in the memory pool (a.k.a. the heap);
+   somewhere after the command-line parameters.  We don't have to
+   initialize that location, we can just use it straight up as a pointer;
+   just point the symbol there.
+
+   This file will be compiled with -no-builtin-syms, so we need to define
+   Pool_Segment and any other symbols that would be predefined in mmixal.  */
+
+__asm__ (" .global _Sbrk_high\n"
+       "_Sbrk_high    IS      Pool_Segment\n"
+       "Pool_Segment  IS      0x40<<56");
+
+caddr_t
+_sbrk (size_t incr)
+{
+  extern char end;            /* Defined by the linker */
+  char *prev_heap_end;
+
+  prev_heap_end = _Sbrk_high;
+  _Sbrk_high += incr;
+  return (caddr_t) prev_heap_end;
+}