Add sbrk and friends

Fix bug in setjmp (jmpbuf changed size)

1 files changed, 22 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sh/brk.c b/libc/sysdeps/linux/sh/brk.c
new file mode 100644
index 000000000..c7943c1fd
--- /dev/null
+++ b/libc/sysdeps/linux/sh/brk.c
@@ -0,0 +1,22 @@
+/* From libc-5.3.12 */
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <errno.h>
+
+extern void * ___brk_addr;
+
+extern int __init_brk ();
+extern void *_brk(void *ptr);
+
+int brk(void * end_data_seg)
+{
+    if (__init_brk () == 0)
+    {
+		___brk_addr = _brk(end_data_seg);
+		if (___brk_addr == end_data_seg)
+			return 0;
+		__set_errno(ENOMEM);
+    }
+    return -1;
+}