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authorEric Botcazou <ebotcazou@adacore.com>2015-01-21 21:27:47 +0300
committerEric Botcazou <ebotcazou@adacore.com>2015-01-21 21:27:47 +0300
commitbf8f43ae8adf162d9acedd9dd4d4f9d3d4f0a646 (patch)
treea5510f14588e74673eab7f8dbd53be8acf1a055f /libgloss/visium/sbrk.c
parentf485f162769910e0733ff92830706e3c5f4c1a1d (diff)
* COPYING.LIBGLOSS: Add Controls and Data Services copyright.
* COPYING.NEWLIB: Likewise. libgloss/ * configure.in: Add Visium support. * configure: Regenerate. * visium/: New directory. newlib/ * configure.host: Add Visium support. * libc/machine/configure.in: Likewise. * libc/machine/configure: Regenerate. * libc/machine/visium/: New directory. * libc/include/machine/setjmp.h (_JBLEN): Define for Visium. * libc/include/machine/ieeefp.h (__IEEE_BIG_ENDIAN): Likewise. * libc/include/machine/time.h (_CLOCKS_PER_SEC_): Likewise.
Diffstat (limited to 'libgloss/visium/sbrk.c')
-rw-r--r--libgloss/visium/sbrk.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/libgloss/visium/sbrk.c b/libgloss/visium/sbrk.c
new file mode 100644
index 000000000..61b1b8d64
--- /dev/null
+++ b/libgloss/visium/sbrk.c
@@ -0,0 +1,56 @@
+/* sbrk.c for the Visium processor.
+
+ Copyright (c) 2015 Rolls-Royce Controls and Data Services Limited.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of Rolls-Royce Controls and Data Services Limited 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT OWNER OR 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. */
+
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+/* These labels are set in the linker script, to mark the start and end of the
+ memory reserved for the heap. */
+extern unsigned char _sheap [];
+extern unsigned char _eheap [];
+
+void *
+sbrk (ptrdiff_t nbytes)
+{
+ static unsigned char *heap_ptr = _sheap;
+
+ if (0 <= nbytes && heap_ptr + nbytes < _eheap)
+ {
+ void *base = (void *)heap_ptr;
+
+ heap_ptr += nbytes;
+ memset (base, 0, nbytes);
+
+ return base;
+ }
+
+ errno = ENOMEM;
+ return (void *)-1;
+}