add new architecture support for or1k

Information about Openrisc:
http://opencores.org/or1k/Main_Page
Integrated from:
https://github.com/openrisc/uClibc-or1k

1 files changed, 28 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/or1k/__init_brk.c b/libc/sysdeps/linux/or1k/__init_brk.c
new file mode 100644
index 000000000..4c6763fdd
--- /dev/null
+++ b/libc/sysdeps/linux/or1k/__init_brk.c
@@ -0,0 +1,28 @@
+/* From libc-5.3.12 */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+void * ___brk_addr = 0;
+
+int __init_brk (void);
+void *_brk(void *ptr);
+
+#define __NR__brk __NR_brk
+_syscall1(void *, _brk, void *, ptr);
+
+int
+__init_brk (void)
+{
+    if (___brk_addr == 0)
+    {
+		___brk_addr = _brk(0);
+		if (___brk_addr == 0)
+		{
+		  __set_errno(ENOMEM);
+		  return -1;
+		}
+    }
+    return 0;
+}