Add sbrk and friends

Fix bug in setjmp (jmpbuf changed size)

1 files changed, 25 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sh/__init_brk.c b/libc/sysdeps/linux/sh/__init_brk.c
new file mode 100644
index 000000000..93aa37d8e
--- /dev/null
+++ b/libc/sysdeps/linux/sh/__init_brk.c
@@ -0,0 +1,25 @@
+/* From libc-5.3.12 */
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <errno.h>
+
+void * ___brk_addr = 0;
+
+#define __NR__brk __NR_brk
+_syscall1(void *, _brk, void *, ptr);
+
+int
+__init_brk ()
+{
+    if (___brk_addr == 0)
+    {
+		___brk_addr = _brk(0);
+		if (___brk_addr == 0)
+		{
+		  __set_errno(ENOMEM);
+		  return -1;
+		}
+    }
+    return 0;
+}