Add specialized memcpy/bzero methods to String which are called from gsharedvt code.

1 files changed, 37 insertions, 0 deletions

diff --git a/mcs/class/corlib/System/String.cs b/mcs/class/corlib/System/String.cs
index 937b9214582..8bb492d8d65 100644
--- a/mcs/class/corlib/System/String.cs
+++ b/mcs/class/corlib/System/String.cs
@@ -3081,6 +3081,43 @@ namespace System
 			memcpy4 (dest, src, size);
 		}
 
+		/* Used by the runtime */
+		internal static unsafe void bzero (byte *dest, int len) {
+			memset (dest, 0, len);
+		}
+
+		internal static unsafe void bzero_aligned_1 (byte *dest, int len) {
+			((byte*)dest) [0] = 0;
+		}
+
+		internal static unsafe void bzero_aligned_2 (byte *dest, int len) {
+			((short*)dest) [0] = 0;
+		}
+
+		internal static unsafe void bzero_aligned_4 (byte *dest, int len) {
+			((int*)dest) [0] = 0;
+		}
+
+		internal static unsafe void bzero_aligned_8 (byte *dest, int len) {
+			((long*)dest) [0] = 0;
+		}
+
+		internal static unsafe void memcpy_aligned_1 (byte *dest, byte *src, int size) {
+			((byte*)dest) [0] = ((byte*)src) [0];
+		}			
+
+		internal static unsafe void memcpy_aligned_2 (byte *dest, byte *src, int size) {
+			((short*)dest) [0] = ((short*)src) [0];
+		}			
+
+		internal static unsafe void memcpy_aligned_4 (byte *dest, byte *src, int size) {
+			((int*)dest) [0] = ((int*)src) [0];
+		}			
+
+		internal static unsafe void memcpy_aligned_8 (byte *dest, byte *src, int size) {
+			((long*)dest) [0] = ((long*)src) [0];
+		}			
+
 		internal static unsafe void CharCopy (char *dest, char *src, int count) {
 			// Same rules as for memcpy, but with the premise that 
 			// chars can only be aligned to even addresses if their