4 files changed, 105 insertions, 1 deletions
diff --git a/src/include/gc/mem.h b/src/include/gc/mem.h
new file mode 100644
index 0000000..2557289
--- /dev/null
+++ b/src/include/gc/mem.h
@@ -0,0 +1,9 @@
+#ifndef DEF_HEAP_H
+#define DEF_HEAP_H
+
+#include "gc/syscall.h"
+
+void* malloc(size_t size);
+void free(void* p);
+
+#endif
diff --git a/src/include/gc/obj.h b/src/include/gc/obj.h
new file mode 100644
index 0000000..10651f5
--- /dev/null
+++ b/src/include/gc/obj.h
@@ -0,0 +1,14 @@
+#ifndef DEF_OBJ_H
+#define DEF_OBJ_H
+
+// generic method error codes
+#define ME_UNHANDLED -32767
+#define ME_INTERRUPTED -32766
+
+struct object_cli {
+	int id;
+};
+
+typedef struct object_cli Object;
+
+#endif
diff --git a/src/include/gc/server.h b/src/include/gc/server.h
new file mode 100644
index 0000000..b98b4fb
--- /dev/null
+++ b/src/include/gc/server.h
@@ -0,0 +1,79 @@
+#ifndef DEF_SERVER_H
+#define DEF_SERVER_H
+
+#include "syscall.h"
+#include "obj.h"
+
+//parameter/return values types
+#define PT_VOID 0
+#define PT_OBJDESC 1
+#define PT_LONG 2
+#define PT_LONGLONG 3		//for return values
+#define PT_SHM 3	
+
+struct method_data {
+	struct {
+		union {
+			int i;
+			void* p;
+		} val;
+		int type;
+		int keepShm;		//for messages : keep shared memory segment after return or unmap ? (default : 0 = unmap)
+	} parameters[3];
+	uint32_t func;
+	int blocking;	//1 : blocking request, 0 : message
+	struct object_srv *obj;
+};
+
+struct method_ret {
+	union {
+		int i;
+		int64_t l;
+	};
+	int type;
+	int status;	//= error code if any
+};
+
+//helper function for creating return values
+struct method_ret mr_long(int val);
+struct method_ret mr_llong(int64_t val);
+struct method_ret mr_obj(Object* obj);
+struct method_ret mr_srv(struct object_srv* obj);
+struct method_ret mr_void();
+struct method_ret mr_err(int error);
+
+typedef struct method_ret (*method_handler)(struct method_data*);
+
+struct method_srv {
+	uint32_t id;
+	method_handler h;
+
+	struct method_srv *next;
+};
+
+struct object_srv {
+	int id;	//descriptor
+	struct method_srv *methods;
+
+	void *data;
+
+	struct object_srv *next;
+};
+
+typedef struct object_srv Server;
+
+extern Server procServer;	//corresponds to descriptor 0.
+
+//possible actions for srv_handle
+#define HA_ONCE 1	//check if requests are waiting, if so handle them
+#define HA_WAIT 2	//check if requests are waiting, if so handle them, else wait for one to come and handle it
+#define HA_LOOP 3	//wait for requests to come, handling them in an infinite loop
+
+void srv_handleAll();	//check all objects once
+void srv_handle(Server* o, int act);
+
+Server *srv_create();
+void srv_delete(Server *o);
+void srv_addHandler(Server* o, uint32_t method, method_handler h);
+
+#endif
diff --git a/src/include/gc/syscall.h b/src/include/gc/syscall.h
index 5287d85..f731e10 100644
--- a/src/include/gc/syscall.h
+++ b/src/include/gc/syscall.h
@@ -21,6 +21,7 @@ struct user_sendrequest {
 	uint32_t func, a, b, c;
 	uint32_t answeri;
 	int64_t answerll;
+	int errcode;
 };
 
 void thread_exit();
@@ -38,9 +39,10 @@ int object_owned(int descriptor);
 void object_close(int descriptor);
 int request_get(int descriptor, struct user_request *rq, int wait);
 int request_has(int descriptor);
-void request_answer(int descriptor, int answer1, int answer2);
+void request_answer(int descriptor, uint32_t answer1, uint32_t answer2, int errcode);
 int request_mapShm(int descriptor, size_t offset, int number);
 int request(int descriptor, struct user_sendrequest *rq);
 int send_msg(int descriptor, struct user_sendrequest *rq);
+int proc_setheap(size_t start, size_t end);
 
 #endif