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.

3 files changed, 10 insertions, 11 deletions

diff --git a/i386/i386/user_ldt.c b/i386/i386/user_ldt.c
index d8bdb90f..e7705b52 100644
--- a/i386/i386/user_ldt.c
+++ b/i386/i386/user_ldt.c
@@ -57,11 +57,11 @@ i386_set_ldt(
 {
 	user_ldt_t	new_ldt, old_ldt, temp;
 	struct real_descriptor *dp;
-	int		i;
-	int             min_selector = 0;
+	unsigned	i;
+	unsigned	min_selector = 0;
 	pcb_t		pcb;
 	vm_size_t	ldt_size_needed;
-	int		first_desc = sel_idx(first_selector);
+	unsigned	first_desc = sel_idx(first_selector);
 	vm_map_copy_t	old_copy_object = NULL;	/* Suppress gcc warning */
 
 	if (thread == THREAD_NULL)
@@ -224,7 +224,6 @@ i386_set_ldt(
 	if (new_ldt)
 #ifdef	MACH_PV_DESCRIPTORS
 	{
-	    int i;
 #ifdef	MACH_PV_PAGETABLES
 	    for (i=0; i<(new_ldt->desc.limit_low + 1)/sizeof(struct real_descriptor); i+=PAGE_SIZE/sizeof(struct real_descriptor))
 		pmap_set_page_readwrite(&new_ldt->ldt[i]);
@@ -264,7 +263,7 @@ i386_get_ldt(thread, first_selector, selector_count, desc_list, count)
 	struct user_ldt *user_ldt;
 	pcb_t		pcb;
 	int		first_desc = sel_idx(first_selector);
-	unsigned int	ldt_count;
+	unsigned	ldt_count;
 	vm_size_t	ldt_size;
 	vm_size_t	size, size_needed;
 	vm_offset_t	addr;
@@ -370,7 +369,7 @@ void
 user_ldt_free(user_ldt_t user_ldt)
 {
 #ifdef	MACH_PV_DESCRIPTORS
-	int i;
+	unsigned i;
 #ifdef	MACH_PV_PAGETABLES
 	for (i=0; i<(user_ldt->desc.limit_low + 1)/sizeof(struct real_descriptor); i+=PAGE_SIZE/sizeof(struct real_descriptor))
 		pmap_set_page_readwrite(&user_ldt->ldt[i]);
diff --git a/i386/i386/xen.h b/i386/i386/xen.h
index 49b0d52f..b434ddaf 100644
--- a/i386/i386/xen.h
+++ b/i386/i386/xen.h
@@ -260,7 +260,7 @@ MACH_INLINE void hyp_set_ldt(void *ldt, unsigned long nbentries) {
 		.arg1.linear_addr = kvtolin(ldt),
 		.arg2.nr_ents = nbentries,
 	};
-	int count;
+	unsigned long count;
 	if (((unsigned long)ldt) & PAGE_MASK)
 		panic("ldt %p is not aligned on a page\n", ldt);
 	for (count=0; count<nbentries; count+= PAGE_SIZE/8)
diff --git a/i386/intel/pmap.c b/i386/intel/pmap.c
index 0771a08d..e362b454 100644
--- a/i386/intel/pmap.c
+++ b/i386/intel/pmap.c
@@ -643,7 +643,7 @@ void pmap_bootstrap(void)
 	kernel_pmap->dirbase = kernel_page_dir = (pt_entry_t*)phystokv(pmap_grab_page());
 #endif	/* PAE */
 	{
-		int i;
+		unsigned i;
 		for (i = 0; i < NPDES; i++)
 			kernel_pmap->dirbase[i] = 0;
 	}
@@ -678,7 +678,7 @@ void pmap_bootstrap(void)
 			l2_map += (la >> PDESHIFT) & PDEMASK;
 			if (!(*l2_map & INTEL_PTE_VALID)) {
 				struct mmu_update update;
-				int j, n;
+				unsigned j, n;
 
 				l1_map[n_l1map] = (pt_entry_t*) phystokv(pmap_grab_page());
 				for (j = 0; j < NPTES; j++)
@@ -857,11 +857,11 @@ void pmap_set_page_readonly_init(void *_vaddr) {
 }
 
 void pmap_clear_bootstrap_pagetable(pt_entry_t *base) {
-	int i;
+	unsigned i;
 	pt_entry_t *dir;
 	vm_offset_t va = 0;
 #if PAE
-	int j;
+	unsigned j;
 #endif	/* PAE */
 	if (!hyp_mmuext_op_mfn (MMUEXT_UNPIN_TABLE, kv_to_mfn(base)))
 		panic("pmap_clear_bootstrap_pagetable: couldn't unpin page %p(%p)\n", base, (vm_offset_t) kv_to_ma(base));