Cleanup.

kernel/ipc.h

@@ -7,28 +7,17 @@
 #include <minix/com.h>
 
 /* Masks and flags for system calls. */
-#define SYSCALL_FUNC	0x000F	/* mask for system call function */
-#define SYSCALL_FLAGS   0x00F0  /* mask for system call flags */
-#define NON_BLOCKING    0x0010  /* do not block if target not ready */
+#define NON_BLOCKING    0x0080  /* do not block if target not ready */
 
-/* System call numbers that are passed when trapping to the kernel. The 
- * numbers are carefully defined so that it can easily be seen (based on 
- * the bits that are on) which checks should be done in sys_call().
- */
-#define SEND		   1	/* 0001 : blocking send */
-#define RECEIVE		   2	/* 0010 : blocking receive */
-#define SENDREC	 	   3  	/* 0011 : SEND + RECEIVE */
-#define NOTIFY		   4	/* 0100 : nonblocking notify */
-#define ECHO		   8	/* 1000 : echo a message */
-
-#define IPC_REQUEST	   5	/* 0101 : blocking request */
-#define IPC_REPLY	   6    /* 0110 : nonblocking reply */
-#define IPC_NOTIFY	   7    /* 0111 : nonblocking notification */
-#define IPC_RECEIVE	   9	/* 1001 : blocking receive */
+/* System call numbers that are passed when trapping to the kernel. */
+#define SEND		   1	/* blocking send */
+#define RECEIVE		   2	/* blocking receive */
+#define SENDREC	 	   3  	/* SEND + RECEIVE */
+#define NOTIFY		   4	/* asynchronous notify */
+#define SENDNB		   5	/* nonblocking send */
+#define SENDA		   16	/* asynchronous send */
 
 /* The following bit masks determine what checks that should be done. */
-#define CHECK_PTR       0xBB	/* 1011 1011 : validate message buffer */
-#define CHECK_DST       0x55	/* 0101 0101 : validate message destination */
-#define CHECK_DEADLOCK  0x93	/* 1001 0011 : check for deadlock */
+#define CHECK_DEADLOCK  0x03	/* 0000 0011 : check for deadlock */
 
 #endif /* IPC_H */