[Add] laos base boot

laos/src/kernel/proc.c

@@ -0,0 +1,24 @@
+#include "proc.h"
+#include "la32r.h"
+#include "latype.h"
+
+struct cpu cpus[NCPU];
+
+struct proc proc[NPROC];
+
+struct proc *initproc;
+
+int nextpid = 1;
+struct spinlock pid_lock;
+
+// helps ensure that wakeups of wait()ing
+// parents are not lost. helps obey the
+// memory model when using p->parent.
+// must be acquired before any p->lock.
+struct spinlock wait_lock;
+
+struct cpu *mycpu() {
+    int id = r_cpuid();
+    struct cpu *c = &cpus[id];
+    return c;
+}