kernel/proc.h can be included in kernel assembky files

- the gnu .S are compiled with __ASSEMBLY__ macro set which allows us to
  conditionaly remove C stuff from the proc.h file when included in assembly
  files

kernel/proc.h

@@ -1,6 +1,8 @@
 #ifndef PROC_H
 #define PROC_H
 
+#ifndef __ASSEMBLY__
+
 /* Here is the declaration of the process table.  It contains all process
  * data, including registers, flags, scheduling priority, memory map, 
  * accounting, message passing (IPC) information, and so on. 
@@ -104,6 +106,8 @@ struct proc {
 #endif
 };
 
+#endif /* __ASSEMBLY__ */
+
 /* Bits for the runtime flags. A process is runnable iff p_rts_flags == 0. */
 #define RTS_SLOT_FREE	0x01	/* process slot is free */
 #define RTS_PROC_STOP	0x02	/* process has been stopped */
@@ -242,6 +246,8 @@ struct proc {
 #define isuserp(p)        isusern((p) >= BEG_USER_ADDR)
 #define isusern(n)        ((n) >= 0)
 
+#ifndef __ASSEMBLY__
+
 /* The process table and pointers to process table slots. The pointers allow
  * faster access because now a process entry can be found by indexing the
  * pproc_addr array, while accessing an element i requires a multiplication
@@ -251,4 +257,6 @@ EXTERN struct proc proc[NR_TASKS + NR_PROCS];	/* process table */
 EXTERN struct proc *rdy_head[NR_SCHED_QUEUES]; /* ptrs to ready list headers */
 EXTERN struct proc *rdy_tail[NR_SCHED_QUEUES]; /* ptrs to ready list tails */
 
+#endif /* __ASSEMBLY__ */
+
 #endif /* PROC_H */