From c2b0dec2dcf3f57f3c306ad84b8e8a83bb913d35 Mon Sep 17 00:00:00 2001
From: Dave Brolley <brolley@redhat.com>
Date: Tue, 18 Jun 2002 21:19:17 +0000
Subject: 2002-06-18  Dave Brolley  <brolley@redhat.com>

	From Catherine Moore, Michael Meissner, Richard Sandiford:
	* configure.in: Support frv*-*-*.
	* frv/Makefile.in: New file.
	* frv/configure: New file.
	* frv/configure.in: New file.
	* frv/crt0.S: New file.
	* frv/fstat.c: New file.
	* frv/getpid.c: New file.
	* frv/isatty.c: New file.
	* frv/kill.c: New file.
	* frv/print.c: New file.
	* frv/putnum.c: New file.
	* frv/sbrk.c: New file.
	* frv/sim-close.S: New file.
	* frv/sim-exit.S: New file.
	* frv/sim-inbyte.c: New file.
	* frv/sim-lseek.S: New file.
	* frv/sim-open.S: New file.
	* frv/sim-read.S: New file.
	* frv/sim-time.c: New file.
	* frv/sim-unlink.S: New file.
	* frv/sim-write.S: New file.
	* frv/stat.c: New file.
---
 libgloss/frv/sbrk.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 libgloss/frv/sbrk.c

(limited to 'libgloss/frv/sbrk.c')

diff --git a/libgloss/frv/sbrk.c b/libgloss/frv/sbrk.c
new file mode 100644
index 000000000..469257d5a
--- /dev/null
+++ b/libgloss/frv/sbrk.c
@@ -0,0 +1,54 @@
+/* sbrk.c -- allocate memory dynamically.
+ * 
+ * Copyright (c) 2002 Red Hat, Inc
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <errno.h>
+#include "glue.h"
+
+/* just in case, most boards have at least some memory */
+#ifndef RAMSIZE
+#  define RAMSIZE             (caddr_t)0x100000
+#endif
+
+char *__heap_ptr = (char *)&_end;
+
+/*
+ * sbrk -- changes heap size size. Get nbytes more
+ *         RAM. We just increment a pointer in what's
+ *         left of memory on the board.
+ */
+char *
+_sbrk (nbytes)
+     int nbytes;
+{
+  char *base;
+  char *sp;
+
+  base = __heap_ptr;
+  __heap_ptr += nbytes;
+
+  return base;
+/* FIXME: We really want to make sure we don't run out of RAM, but this
+ *       isn't very portable.
+ */
+#if 0
+  if ((RAMSIZE - heap_ptr - nbytes) >= 0) {
+    base = heap_ptr;
+    heap_ptr += nbytes;
+    return (base);
+  } else {
+    errno = ENOMEM;
+    return ((char *)-1);
+  }
+#endif
+}
-- 
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