[sgen] Pack structs for binary protocol entries

[mono.git] / mono / sgen / sgen-protocol.h

diff --git a/mono/sgen/sgen-protocol.h b/mono/sgen/sgen-protocol.h
index 6ce194c00d8f684ab76d5c80dc3a4d6ccbc8a61a..1c10d29d5c0e367f07e8d26a0163177da59c1b41 100644 (file)
--- a/mono/sgen/sgen-protocol.h
+++ b/mono/sgen/sgen-protocol.h
@@ -14,10 +14,22 @@
 
 #include "sgen-gc.h"
 
+#define PROTOCOL_HEADER_CHECK 0xde7ec7ab1ec0de
+#define PROTOCOL_HEADER_VERSION 1
+
 /* Special indices returned by MATCH_INDEX. */
 #define BINARY_PROTOCOL_NO_MATCH (-1)
 #define BINARY_PROTOCOL_MATCH (-2)
 
+/* We pack all protocol structs by default unless specified otherwise */
+#ifndef PROTOCOL_STRUCT_ATTR
+#ifdef __GNUC__
+#define PROTOCOL_STRUCT_ATTR __attribute__ ((packed))
+#else
+#define PROTOCOL_STRUCT_ATTR
+#endif
+#endif
+
 #define PROTOCOL_ID(method) method ## _id
 #define PROTOCOL_STRUCT(method) method ## _struct
 #define CLIENT_PROTOCOL_NAME(method) sgen_client_ ## method
@@ -70,29 +82,29 @@ enum {
 
 #define BEGIN_PROTOCOL_ENTRY0(method)
 #define BEGIN_PROTOCOL_ENTRY1(method,t1,f1) \
-       typedef struct { \
+       typedef struct PROTOCOL_STRUCT_ATTR { \
                t1 f1; \
        } PROTOCOL_STRUCT(method);
 #define BEGIN_PROTOCOL_ENTRY2(method,t1,f1,t2,f2) \
-       typedef struct { \
+       typedef struct PROTOCOL_STRUCT_ATTR { \
                t1 f1; \
                t2 f2; \
        } PROTOCOL_STRUCT(method);
 #define BEGIN_PROTOCOL_ENTRY3(method,t1,f1,t2,f2,t3,f3) \
-       typedef struct { \
+       typedef struct PROTOCOL_STRUCT_ATTR { \
                t1 f1; \
                t2 f2; \
                t3 f3; \
        } PROTOCOL_STRUCT(method);
 #define BEGIN_PROTOCOL_ENTRY4(method,t1,f1,t2,f2,t3,f3,t4,f4) \
-       typedef struct { \
+       typedef struct PROTOCOL_STRUCT_ATTR { \
                t1 f1; \
                t2 f2; \
                t3 f3; \
                t4 f4; \
        } PROTOCOL_STRUCT(method);
 #define BEGIN_PROTOCOL_ENTRY5(method,t1,f1,t2,f2,t3,f3,t4,f4,t5,f5) \
-       typedef struct { \
+       typedef struct PROTOCOL_STRUCT_ATTR { \
                t1 f1; \
                t2 f2; \
                t3 f3; \
@@ -100,7 +112,7 @@ enum {
                t5 f5; \
        } PROTOCOL_STRUCT(method);
 #define BEGIN_PROTOCOL_ENTRY6(method,t1,f1,t2,f2,t3,f3,t4,f4,t5,f5,t6,f6) \
-       typedef struct { \
+       typedef struct PROTOCOL_STRUCT_ATTR { \
                t1 f1; \
                t2 f2; \
                t3 f3; \