Removed unused symbols.

Minor cleanups.

kernel/arch/i386/apic.c

@@ -308,9 +308,6 @@ PRIVATE int lapic_enable_in_msr(void)
 PUBLIC int lapic_enable(void)
 {
 	u32_t val, nlvt;
-	u32_t timeout = 0xFFFF;
-	u32_t errstatus = 0;
-	int i;
 	unsigned cpu = cpuid;
 
 	if (!lapic_addr)

kernel/arch/i386/arch_do_vmctl.c

@@ -64,7 +64,6 @@ struct proc *p;
 	}
 	case VMCTL_I386_PAGEDIRS:
 	{
-		int pde;
 		vm_pagedirs = (u32_t *) m_ptr->SVMCTL_VALUE;
 		return OK;
 	}

kernel/arch/i386/do_sdevio.c

@@ -35,8 +35,6 @@ PUBLIC int do_sdevio(
   struct proc *rp;
   struct priv *privp;
   struct io_range *iorp;
-  int rem;
-  vir_bytes addr;
   struct proc *destproc;
 
   /* Allow safe copies and accesses to SELF */

kernel/arch/i386/exception.c

@@ -19,10 +19,6 @@ void pagefault( struct proc *pr,
 		struct exception_frame * frame,
 		int is_nested)
 {
-	int s;
-	vir_bytes ph;
-	u32_t pte;
-	int procok = 0, pcok = 0, rangeok = 0;
 	int in_physcopy = 0;
 
 	reg_t pagefaultcr2;
@@ -108,8 +104,6 @@ PUBLIC void exception_handler(int is_nested, struct exception_frame * frame)
 {
 /* An exception or unexpected interrupt has occurred. */
 
-struct proc *t;
-
   struct ex_s {
 	char *msg;
 	int signum;
@@ -210,7 +204,7 @@ struct proc *t;
  *===========================================================================*/
 PUBLIC void proc_stacktrace(struct proc *whichproc)
 {
-	reg_t bp, v_bp, v_pc, v_hbp;
+	reg_t v_bp, v_pc, v_hbp;
 	int iskernel;
 
 	v_bp = whichproc->p_reg.fp;

kernel/arch/i386/i8259.c

@@ -36,8 +36,6 @@ PUBLIC int intr_init(int mine, int auto_eoi)
  * use the BIOS locations instead.  The flag "mine" is set if the 8259s are
  * to be programmed for MINIX, or to be reset to what the BIOS expects.
  */
-  int i;
-
   if (!intr_disabled())
 	  intr_disable();
 

kernel/arch/i386/memory.c

@@ -50,7 +50,6 @@ FORWARD _PROTOTYPE( void set_cr3, (void)			);
 
 PUBLIC void vm_init(struct proc *newptproc)
 {
-	int i;
 	if(vm_running)
 		minix_panic("vm_init: vm_running", NO_NUM);
 	vm_set_cr3(newptproc);
@@ -156,9 +155,7 @@ int lin_lin_copy(struct proc *srcproc, vir_bytes srclinaddr,
 	struct proc *dstproc, vir_bytes dstlinaddr, vir_bytes bytes)
 {
 	u32_t addr;
-	int o1, o2;
 	int procslot;
-	int firstloop = 1;
 
 	NOREC_ENTER(linlincopy);
 
@@ -217,8 +214,6 @@ int lin_lin_copy(struct proc *srcproc, vir_bytes srclinaddr,
 		bytes -= chunk;
 		srclinaddr += chunk;
 		dstlinaddr += chunk;
-
-		firstloop = 0;
 	}
 
 	NOREC_RETURN(linlincopy, OK);
@@ -692,7 +687,7 @@ char *flagstr(u32_t e, int dir)
 
 void vm_pt_print(u32_t *pagetable, u32_t v)
 {
-	int pte, l = 0;
+	int pte;
 	int col = 0;
 
 	vmassert(!((u32_t) pagetable % I386_PAGE_SIZE));
@@ -758,7 +753,6 @@ u32_t read_cr3(void)
  *===========================================================================*/
 int vm_phys_memset(phys_bytes ph, u8_t c, phys_bytes bytes)
 {
-	char *v;
 	u32_t p;
 	NOREC_ENTER(physmemset);
 
@@ -808,7 +802,7 @@ int vmcheck;			/* if nonzero, can return VMSUSPEND */
   struct vir_addr *vir_addr[2];	/* virtual source and destination address */
   phys_bytes phys_addr[2];	/* absolute source and destination */ 
   int seg_index;
-  int i, r;
+  int i;
   struct proc *procs[2];
   NOREC_ENTER(virtualcopy);
 
@@ -887,8 +881,6 @@ int vmcheck;			/* if nonzero, can return VMSUSPEND */
 	caller = proc_addr(who_p);
 
 	if(RTS_ISSET(caller, RTS_VMREQUEST)) {
-		struct proc *target;
-		int pn;
 		vmassert(caller->p_vmrequest.vmresult != VMSUSPEND);
 		RTS_LOCK_UNSET(caller, RTS_VMREQUEST);
 		if(caller->p_vmrequest.vmresult != OK) {

kernel/arch/i386/protect.c

@@ -129,7 +129,6 @@ PUBLIC void prot_init(void)
 /* Set up tables for protected mode.
  * All GDT slots are allocated at compile time.
  */
-  struct gate_table_s *gtp;
   struct desctableptr_s *dtp;
   unsigned ldt_index;
   register struct proc *rp;
@@ -439,7 +438,6 @@ PUBLIC void printseg(char *banner, int iscs, struct proc *pr, u32_t selector)
 PUBLIC int prot_set_kern_seg_limit(vir_bytes limit)
 {
 	struct proc *rp;
-	vir_bytes prev;
 	int orig_click;
 	int incr_clicks;