add bytestorune and stringtorune to sys.

SVN=126321

2 files changed, 25 insertions, 0 deletions

diff --git a/src/runtime/rune.c b/src/runtime/rune.c
index 2c717d7a95..3e1fb14d63 100644
--- a/src/runtime/rune.c
+++ b/src/runtime/rune.c
@@ -222,3 +222,22 @@ runetochar(byte *str, int32 rune)  /* note: in original, arg2 was pointer */
 	str[3] = Tx | (c & Maskx);
 	return 4;
 }
+
+/*
+ * Wrappers for calling from go
+ */
+void
+sys·bytestorune(byte *str, int32 off, int32 length, int32 outrune, int32 outcount)
+{
+	outcount = charntorune(&outrune, str + off, length);
+	FLUSH(&outrune);
+	FLUSH(&outcount);
+}
+
+void
+sys·stringtorune(string str, int32 off, int32 length, int32 outrune, int32 outcount)
+{
+	outcount = charntorune(&outrune, str->str + off, length);
+	FLUSH(&outrune);
+	FLUSH(&outcount);
+}
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index dc8f88bb7a..14e8f177be 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -142,4 +142,10 @@ void	sys·intstring(int64, string);
 void	sys·ifaces2i(Sigi*, Sigs*, Map*, void*);
 void	sys·ifacei2i(Sigi*, Map*, void*);
 void	sys·ifacei2s(Sigs*, Map*, void*);
+
+/*
+ * User go-called
+ */
 void	sys·readfile(string, string, bool);
+void	sys·bytestorune(byte*, int32, int32, int32, int32);
+void	sys·stringtorune(string, int32, int32, int32, int32);