Fix gcc-6 warnings

* ddb/db_elf.c (elf_db_sym_init): Turn `i' into unsigned.
* device/ds_routines.c (ds_device_open, device_writev_trap): Likewise.
* i386/i386/user_ldt.c (i386_set_ldt): Likewise for `i', `min_selector', and
`first_desc'.
(i386_get_ldt): Likewise for `ldt_count'.
(user_ldt_free): Likewise for `i'.
* i386/i386/xen.h (hyp_set_ldt): Turn `count' into unsigned long.
* i386/intel/pmap.c (pmap_bootstrap): Turn `i', `j' and 'n' into unsigned.
(pmap_clear_bootstrap_pagetable): Likewise for `i' and `j'.
* ipc/ipc_kmsg.c (ipc_msg_print): Turn `i' and `numwords' into unsigned.
* kern/boot_script.c (boot_script_parse_line): Likewise for `i'.
* kern/bootstrap.c (bootstrap_create): Likewise for `n' and `i'.
* kern/host.c (host_processors): Likewise for `i'.
* kern/ipc_tt.c (mach_ports_register): Likewise.
* kern/mach_clock.c (tickadj, bigadj): turn into unsigned.
* kern/processor.c (processor_set_things): Turn `i' into unsigned.
* kern/task.c (task_threads): Likewise.
* kern/thread.c (consider_thread_collect, stack_init): Likewise.
* kern/strings.c (memset): Turn `i' into size_t.
* vm/memory_object.c (memory_object_lock_request): Turn `i' into unsigned.
* xen/block.c (hyp_block_init): Use %u format for evt.
(device_open): Drop unused err variable.
(device_write): Turn `copy_npages', `i', `nbpages', and `j' into unsigned.
* xen/console.c (hypcnread, hypcnwrite, hypcnclose): Turn dev to dev_t.
(hypcnclose): Return void.
* xen/console.h (hypcnread, hypcnwrite, hypcnclose): Fix prototypes
accordingly.
* xen/evt.c (form_int_mask): Turn `i' into int.
* xen/net.c (hyp_net_init): Use %u format for evt.
(device_open): Remove unused `err' variable.

9 files changed, 15 insertions, 13 deletions

diff --git a/kern/boot_script.c b/kern/boot_script.c
index b245d1d8..b2ae901c 100644
--- a/kern/boot_script.c
+++ b/kern/boot_script.c
@@ -294,7 +294,8 @@ boot_script_parse_line (void *hook, char *cmdline)
 	  for (p += 2;;)
 	    {
 	      char c;
-	      int i, type;
+	      unsigned i;
+	      int type;
 	      long val;
 	      struct sym *s;
 
diff --git a/kern/bootstrap.c b/kern/bootstrap.c
index 08362767..7398ea44 100644
--- a/kern/bootstrap.c
+++ b/kern/bootstrap.c
@@ -124,7 +124,7 @@ free_bootstrap_pages(phys_addr_t start, phys_addr_t end)
 void bootstrap_create(void)
 {
   int compat;
-  int n = 0;
+  unsigned n = 0;
 #ifdef	MACH_XEN
   struct multiboot_module *bmods = ((struct multiboot_module *)
                                    boot_info.mod_start);
@@ -164,7 +164,8 @@ void bootstrap_create(void)
     }
   else
     {
-      int i, losers;
+      unsigned i;
+      int losers;
 
       /* Initialize boot script variables.  We leak these send rights.  */
       losers = boot_script_set_variable
diff --git a/kern/host.c b/kern/host.c
index 2855cd2d..57280c49 100644
--- a/kern/host.c
+++ b/kern/host.c
@@ -51,7 +51,7 @@ kern_return_t host_processors(
 	processor_array_t	*processor_list,
 	natural_t		*countp)
 {
-	int			i;
+	unsigned		i;
 	processor_t		*tp;
 	vm_offset_t		addr;
 	unsigned int		count;
diff --git a/kern/ipc_tt.c b/kern/ipc_tt.c
index e4d657b7..04a5a92f 100644
--- a/kern/ipc_tt.c
+++ b/kern/ipc_tt.c
@@ -818,7 +818,7 @@ mach_ports_register(
 	mach_msg_type_number_t	portsCnt)
 {
 	ipc_port_t ports[TASK_PORT_REGISTER_MAX];
-	int i;
+	unsigned i;
 
 	if ((task == TASK_NULL) ||
 	    (portsCnt > TASK_PORT_REGISTER_MAX))
diff --git a/kern/mach_clock.c b/kern/mach_clock.c
index d6ebf23e..e4d44f57 100644
--- a/kern/mach_clock.c
+++ b/kern/mach_clock.c
@@ -74,11 +74,11 @@ int		timedelta = 0;
 int		tickdelta = 0;
 
 #if	HZ > 500
-int		tickadj = 1;		/* can adjust HZ usecs per second */
+unsigned	tickadj = 1;		/* can adjust HZ usecs per second */
 #else
-int		tickadj = 500 / HZ;	/* can adjust 100 usecs per second */
+unsigned	tickadj = 500 / HZ;	/* can adjust 100 usecs per second */
 #endif
-int		bigadj = 1000000;	/* adjust 10*tickadj if adjustment
+unsigned	bigadj = 1000000;	/* adjust 10*tickadj if adjustment
 					   > bigadj */
 
 /*
diff --git a/kern/processor.c b/kern/processor.c
index 0a88469b..dffd7d0b 100644
--- a/kern/processor.c
+++ b/kern/processor.c
@@ -849,7 +849,7 @@ processor_set_things(
 	int		type)
 {
 	unsigned int actual;	/* this many things */
-	int i;
+	unsigned i;
 
 	vm_size_t size, size_needed;
 	vm_offset_t addr;
diff --git a/kern/strings.c b/kern/strings.c
index e299534a..64410d91 100644
--- a/kern/strings.c
+++ b/kern/strings.c
@@ -184,7 +184,7 @@ memset(
 	void *_s, int c, size_t n)
 {
 	char *s = _s;
-	int i;
+	size_t i;
 
 	for (i = 0; i < n ; i++)
 		s[i] = c;
diff --git a/kern/task.c b/kern/task.c
index 0f24e44d..d721f172 100644
--- a/kern/task.c
+++ b/kern/task.c
@@ -565,7 +565,7 @@ kern_return_t task_threads(
 	unsigned int actual;	/* this many threads */
 	thread_t thread;
 	thread_t *threads;
-	int i;
+	unsigned i;
 
 	vm_size_t size, size_needed;
 	vm_offset_t addr;
diff --git a/kern/thread.c b/kern/thread.c
index ce44ed14..a8211491 100644
--- a/kern/thread.c
+++ b/kern/thread.c
@@ -2332,7 +2332,7 @@ void consider_thread_collect(void)
 vm_size_t stack_usage(
 	vm_offset_t stack)
 {
-	int i;
+	unsigned i;
 
 	for (i = 0; i < KERNEL_STACK_SIZE/sizeof(unsigned int); i++)
 	    if (((unsigned int *)stack)[i] != STACK_MARKER)
@@ -2350,7 +2350,7 @@ void stack_init(
 	vm_offset_t stack)
 {
 	if (stack_check_usage) {
-	    int i;
+	    unsigned i;
 
 	    for (i = 0; i < KERNEL_STACK_SIZE/sizeof(unsigned int); i++)
 		((unsigned int *)stack)[i] = STACK_MARKER;