Initial version of the CRIS port.

1 files changed, 32 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/cris/__init_brk.c b/libc/sysdeps/linux/cris/__init_brk.c
new file mode 100644
index 000000000..0f5624b85
--- /dev/null
+++ b/libc/sysdeps/linux/cris/__init_brk.c
@@ -0,0 +1,32 @@
+/* From libc-5.3.12 */
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <errno.h>
+#include "sysdep.h"
+
+void * ___brk_addr = 0;
+
+int
+__init_brk (void)
+{
+    if (___brk_addr == 0) {
+	    /* Notice that we don't need to save/restore the GOT
+	     * register since that is not call clobbered by the syscall
+	     */
+	    
+	    asm ("clear.d $r10\n\t"
+		 "movu.w " STR(__NR_brk) ",$r9\n\t"
+		 "break 13\n\t"
+		 "move.d $r10, %0"
+		 : "=r" (___brk_addr)
+		 :
+		 : "r9", "r10");
+	    
+	    if (___brk_addr == 0) {
+		    __set_errno(ENOMEM);
+		    return -1;
+	    }
+    }
+    return 0;
+}