[apple/xnu.git] / osfmk / i386 / phys.c

/*
 * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

#include <mach_rt.h>
#include <mach_debug.h>
#include <mach_ldebug.h>

#include <sys/kdebug.h>

#include <mach/kern_return.h>
#include <mach/thread_status.h>
#include <mach/vm_param.h>

#include <kern/counters.h>
#include <kern/mach_param.h>
#include <kern/task.h>
#include <kern/thread.h>
#include <kern/sched_prim.h>
#include <kern/misc_protos.h>
#include <kern/assert.h>
#include <kern/spl.h>
#include <ipc/ipc_port.h>
#include <vm/vm_kern.h>
#include <vm/vm_map.h>
#include <vm/pmap.h>

#include <i386/cpu_data.h>
#include <i386/cpu_number.h>
#include <i386/thread.h>
#include <i386/eflags.h>
#include <i386/proc_reg.h>
#include <i386/seg.h>
#include <i386/tss.h>
#include <i386/user_ldt.h>
#include <i386/fpu.h>
#include <i386/misc_protos.h>

/*
 *	pmap_zero_page zeros the specified (machine independent) page.
 */
void
pmap_zero_page(
       ppnum_t pn)
{
	assert(pn != vm_page_fictitious_addr);
	assert(pn != vm_page_guard_addr);
	bzero_phys((addr64_t)i386_ptob(pn), PAGE_SIZE);
}

/*
 *	pmap_zero_part_page
 *	zeros the specified (machine independent) part of a page.
 */
void
pmap_zero_part_page(
	ppnum_t         pn,
	vm_offset_t     offset,
	vm_size_t       len)
{
	assert(pn != vm_page_fictitious_addr);
	assert(pn != vm_page_guard_addr);
	assert(offset + len <= PAGE_SIZE);
	bzero_phys((addr64_t)(i386_ptob(pn) + offset), (uint32_t)len);
}

/*
 *	pmap_copy_page copies the specified (machine independent) pages.
 */
void
pmap_copy_part_page(
	ppnum_t 	psrc,
	vm_offset_t	src_offset,
	ppnum_t	        pdst,
	vm_offset_t	dst_offset,
	vm_size_t	len)
{
        pmap_paddr_t src, dst;

	assert(psrc != vm_page_fictitious_addr);
	assert(pdst != vm_page_fictitious_addr);
	assert(psrc != vm_page_guard_addr);
	assert(pdst != vm_page_guard_addr);

	src = i386_ptob(psrc);
	dst = i386_ptob(pdst);

	assert((((uintptr_t)dst & PAGE_MASK) + dst_offset + len) <= PAGE_SIZE);
	assert((((uintptr_t)src & PAGE_MASK) + src_offset + len) <= PAGE_SIZE);

	bcopy_phys((addr64_t)src + (src_offset & INTEL_OFFMASK),
		   (addr64_t)dst + (dst_offset & INTEL_OFFMASK),
		   len);
}

/*
 *      pmap_copy_part_lpage copies part of a virtually addressed page 
 *      to a physically addressed page.
 */
void
pmap_copy_part_lpage(
	__unused vm_offset_t 	src,
	__unused ppnum_t 	pdst,
	__unused vm_offset_t	dst_offset,
	__unused vm_size_t	len)
{

	assert(pdst != vm_page_fictitious_addr);
	assert(pdst != vm_page_guard_addr);
	assert((dst_offset + len) <= PAGE_SIZE);

}

/*
 *      pmap_copy_part_rpage copies part of a physically addressed page 
 *      to a virtually addressed page.
 */
void
pmap_copy_part_rpage(
	__unused ppnum_t	        psrc,
	__unused vm_offset_t	src_offset,
	__unused vm_offset_t	dst,
	__unused vm_size_t	len)
{

	assert(psrc != vm_page_fictitious_addr);
	assert(psrc != vm_page_guard_addr);
	assert((src_offset + len) <= PAGE_SIZE);

}

/*
 *	kvtophys(addr)
 *
 *	Convert a kernel virtual address to a physical address
 */
addr64_t
kvtophys(
	vm_offset_t addr)
{
	pmap_paddr_t pa;

	pa = ((pmap_paddr_t)pmap_find_phys(kernel_pmap, addr)) << INTEL_PGSHIFT;
	if (pa)
		pa |= (addr & INTEL_OFFMASK);

	return ((addr64_t)pa);
}

extern pt_entry_t *debugger_ptep;
extern vm_map_offset_t debugger_window_kva;
extern int _bcopy(const void *, void *, vm_size_t);
extern int _bcopy2(const void *, void *);
extern int _bcopy4(const void *, void *);
extern int _bcopy8(const void *, void *);

__private_extern__ int ml_copy_phys(addr64_t src64, addr64_t dst64, vm_size_t bytes) {
	void *src, *dst;
	int err = 0;

	mp_disable_preemption();
#if NCOPY_WINDOWS > 0
	mapwindow_t *src_map, *dst_map;
	/* We rely on MTRRs here */
	src_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | ((pmap_paddr_t)src64 & PG_FRAME) | INTEL_PTE_REF));
	dst_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID | INTEL_PTE_RW | ((pmap_paddr_t)dst64 & PG_FRAME) | INTEL_PTE_REF | INTEL_PTE_MOD));
	src = (void *) ((uintptr_t)src_map->prv_CADDR | ((uint32_t)src64 & INTEL_OFFMASK));
	dst = (void *) ((uintptr_t)dst_map->prv_CADDR | ((uint32_t)dst64 & INTEL_OFFMASK));
#elif defined(__x86_64__)
	addr64_t debug_pa = 0;

	/* If either destination or source are outside the
	 * physical map, establish a physical window onto the target frame.
	 */
	assert(physmap_enclosed(src64) || physmap_enclosed(dst64));

	if (physmap_enclosed(src64) == FALSE) {
		src = (void *)(debugger_window_kva | (src64 & INTEL_OFFMASK));
		dst = PHYSMAP_PTOV(dst64);
		debug_pa = src64 & PG_FRAME;
	} else if (physmap_enclosed(dst64) == FALSE) {
		src = PHYSMAP_PTOV(src64);
		dst = (void *)(debugger_window_kva | (dst64 & INTEL_OFFMASK));
		debug_pa = dst64 & PG_FRAME;
	} else {
		src = PHYSMAP_PTOV(src64);
		dst = PHYSMAP_PTOV(dst64);
	}
	/* DRK: debugger only routine, we don't bother checking for an
	 * identical mapping.
	 */
	if (debug_pa) {
		if (debugger_window_kva == 0)
			panic("%s: invoked in non-debug mode", __FUNCTION__);
		/* Establish a cache-inhibited physical window; some platforms
		 * may not cover arbitrary ranges with MTRRs
		 */
		pmap_store_pte(debugger_ptep, debug_pa | INTEL_PTE_NCACHE | INTEL_PTE_RW | INTEL_PTE_REF| INTEL_PTE_MOD | INTEL_PTE_VALID);
		flush_tlb_raw();
#if	DEBUG
		kprintf("Remapping debugger physical window at %p to 0x%llx\n", (void *)debugger_window_kva, debug_pa);
#endif
	}
#endif
	/* ensure we stay within a page */
	if (((((uint32_t)src64 & (I386_PGBYTES-1)) + bytes) > I386_PGBYTES) || ((((uint32_t)dst64 & (I386_PGBYTES-1)) + bytes) > I386_PGBYTES) ) {
	        panic("ml_copy_phys spans pages, src: 0x%llx, dst: 0x%llx", src64, dst64);
	}

	/*
	 * For device register access from the debugger,
	 * 2-byte/16-bit, 4-byte/32-bit and 8-byte/64-bit copies are handled
	 * by assembly routines ensuring the required access widths.
	 * 1-byte and other copies are handled by the regular _bcopy.
	 */
	switch (bytes) {
	case 2:
		err = _bcopy2(src, dst);
		break;
	case 4:
		err = _bcopy4(src, dst);
		break;
	case 8:
		err = _bcopy8(src, dst);
		break;
	case 1:
	default:
		err = _bcopy(src, dst, bytes);
		break;
	}

#if NCOPY_WINDOWS > 0
	pmap_put_mapwindow(src_map);
	pmap_put_mapwindow(dst_map);
#endif
	mp_enable_preemption();

	return err;
}
Commit	Line	Data
1c79356b	1	/*
39236c6e	2	* Copyright (c) 2000-2012 Apple Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990,1989 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
1c79356b	56
91447636 A	57	#include <mach_rt.h>
	58	#include <mach_debug.h>
	59	#include <mach_ldebug.h>
	60
	61	#include <sys/kdebug.h>
	62
	63	#include <mach/kern_return.h>
	64	#include <mach/thread_status.h>
1c79356b	65	#include <mach/vm_param.h>
91447636 A	66
	67	#include <kern/counters.h>
	68	#include <kern/mach_param.h>
	69	#include <kern/task.h>
	70	#include <kern/thread.h>
	71	#include <kern/sched_prim.h>
1c79356b	72	#include <kern/misc_protos.h>
91447636 A	73	#include <kern/assert.h>
	74	#include <kern/spl.h>
	75	#include <ipc/ipc_port.h>
	76	#include <vm/vm_kern.h>
	77	#include <vm/vm_map.h>
	78	#include <vm/pmap.h>
	79
	80	#include <i386/cpu_data.h>
	81	#include <i386/cpu_number.h>
	82	#include <i386/thread.h>
	83	#include <i386/eflags.h>
	84	#include <i386/proc_reg.h>
	85	#include <i386/seg.h>
	86	#include <i386/tss.h>
	87	#include <i386/user_ldt.h>
	88	#include <i386/fpu.h>
91447636	89	#include <i386/misc_protos.h>
1c79356b A	90
	91	/*
	92	* pmap_zero_page zeros the specified (machine independent) page.
	93	*/
	94	void
	95	pmap_zero_page(
b0d623f7	96	ppnum_t pn)
1c79356b	97	{
55e303ae	98	assert(pn != vm_page_fictitious_addr);
2d21ac55	99	assert(pn != vm_page_guard_addr);
91447636	100	bzero_phys((addr64_t)i386_ptob(pn), PAGE_SIZE);
1c79356b A	101	}
	102
	103	/*
	104	* pmap_zero_part_page
	105	* zeros the specified (machine independent) part of a page.
	106	*/
	107	void
	108	pmap_zero_part_page(
b0d623f7	109	ppnum_t pn,
1c79356b A	110	vm_offset_t offset,
	111	vm_size_t len)
	112	{
55e303ae	113	assert(pn != vm_page_fictitious_addr);
2d21ac55	114	assert(pn != vm_page_guard_addr);
1c79356b	115	assert(offset + len <= PAGE_SIZE);
b0d623f7	116	bzero_phys((addr64_t)(i386_ptob(pn) + offset), (uint32_t)len);
1c79356b A	117	}
	118
	119	/*
	120	* pmap_copy_page copies the specified (machine independent) pages.
	121	*/
	122	void
	123	pmap_copy_part_page(
55e303ae	124	ppnum_t psrc,
1c79356b	125	vm_offset_t src_offset,
55e303ae	126	ppnum_t pdst,
1c79356b A	127	vm_offset_t dst_offset,
	128	vm_size_t len)
	129	{
0c530ab8 A	130	pmap_paddr_t src, dst;
0c530ab8 A	131
55e303ae A	132	assert(psrc != vm_page_fictitious_addr);
55e303ae A	133	assert(pdst != vm_page_fictitious_addr);
2d21ac55 A	134	assert(psrc != vm_page_guard_addr);
2d21ac55 A	135	assert(pdst != vm_page_guard_addr);
0c530ab8 A	136
	137	src = i386_ptob(psrc);
	138	dst = i386_ptob(pdst);
	139
b0d623f7 A	140	assert((((uintptr_t)dst & PAGE_MASK) + dst_offset + len) <= PAGE_SIZE);
b0d623f7 A	141	assert((((uintptr_t)src & PAGE_MASK) + src_offset + len) <= PAGE_SIZE);
0c530ab8	142
91447636 A	143	bcopy_phys((addr64_t)src + (src_offset & INTEL_OFFMASK),
	144	(addr64_t)dst + (dst_offset & INTEL_OFFMASK),
	145	len);
1c79356b A	146	}
	147
	148	/*
	149	* pmap_copy_part_lpage copies part of a virtually addressed page
	150	* to a physically addressed page.
	151	*/
	152	void
	153	pmap_copy_part_lpage(
b0d623f7 A	154	__unused vm_offset_t src,
	155	__unused ppnum_t pdst,
	156	__unused vm_offset_t dst_offset,
	157	__unused vm_size_t len)
1c79356b	158	{
55e303ae	159
55e303ae	160	assert(pdst != vm_page_fictitious_addr);
2d21ac55	161	assert(pdst != vm_page_guard_addr);
0c530ab8 A	162	assert((dst_offset + len) <= PAGE_SIZE);
0c530ab8 A	163
1c79356b A	164	}
	165
	166	/*
	167	* pmap_copy_part_rpage copies part of a physically addressed page
	168	* to a virtually addressed page.
	169	*/
	170	void
	171	pmap_copy_part_rpage(
b0d623f7 A	172	__unused ppnum_t psrc,
	173	__unused vm_offset_t src_offset,
	174	__unused vm_offset_t dst,
	175	__unused vm_size_t len)
1c79356b	176	{
55e303ae A	177
55e303ae A	178	assert(psrc != vm_page_fictitious_addr);
2d21ac55	179	assert(psrc != vm_page_guard_addr);
0c530ab8 A	180	assert((src_offset + len) <= PAGE_SIZE);
0c530ab8 A	181
1c79356b A	182	}
	183
	184	/*
	185	* kvtophys(addr)
	186	*
	187	* Convert a kernel virtual address to a physical address
	188	*/
0c530ab8	189	addr64_t
1c79356b A	190	kvtophys(
	191	vm_offset_t addr)
	192	{
91447636	193	pmap_paddr_t pa;
b0d623f7 A	194
	195	pa = ((pmap_paddr_t)pmap_find_phys(kernel_pmap, addr)) << INTEL_PGSHIFT;
	196	if (pa)
	197	pa \|= (addr & INTEL_OFFMASK);
2d21ac55	198
0c530ab8	199	return ((addr64_t)pa);
1c79356b	200	}
0c530ab8	201
7ddcb079 A	202	extern pt_entry_t *debugger_ptep;
7ddcb079 A	203	extern vm_map_offset_t debugger_window_kva;
39236c6e A	204	extern int _bcopy(const void , void , vm_size_t);
	205	extern int _bcopy2(const void , void );
	206	extern int _bcopy4(const void , void );
	207	extern int _bcopy8(const void , void );
7ddcb079	208
39236c6e	209	__private_extern__ int ml_copy_phys(addr64_t src64, addr64_t dst64, vm_size_t bytes) {
b0d623f7	210	void src, dst;
39236c6e	211	int err = 0;
b0d623f7 A	212
	213	mp_disable_preemption();
	214	#if NCOPY_WINDOWS > 0
	215	mapwindow_t src_map, dst_map;
	216	/* We rely on MTRRs here */
	217	src_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID \| ((pmap_paddr_t)src64 & PG_FRAME) \| INTEL_PTE_REF));
	218	dst_map = pmap_get_mapwindow((pt_entry_t)(INTEL_PTE_VALID \| INTEL_PTE_RW \| ((pmap_paddr_t)dst64 & PG_FRAME) \| INTEL_PTE_REF \| INTEL_PTE_MOD));
	219	src = (void *) ((uintptr_t)src_map->prv_CADDR \| ((uint32_t)src64 & INTEL_OFFMASK));
	220	dst = (void *) ((uintptr_t)dst_map->prv_CADDR \| ((uint32_t)dst64 & INTEL_OFFMASK));
	221	#elif defined(__x86_64__)
7ddcb079 A	222	addr64_t debug_pa = 0;
	223
	224	/* If either destination or source are outside the
	225	* physical map, establish a physical window onto the target frame.
	226	*/
	227	assert(physmap_enclosed(src64) \|\| physmap_enclosed(dst64));
	228
	229	if (physmap_enclosed(src64) == FALSE) {
	230	src = (void *)(debugger_window_kva \| (src64 & INTEL_OFFMASK));
316670eb	231	dst = PHYSMAP_PTOV(dst64);
7ddcb079 A	232	debug_pa = src64 & PG_FRAME;
7ddcb079 A	233	} else if (physmap_enclosed(dst64) == FALSE) {
316670eb	234	src = PHYSMAP_PTOV(src64);
7ddcb079 A	235	dst = (void *)(debugger_window_kva \| (dst64 & INTEL_OFFMASK));
7ddcb079 A	236	debug_pa = dst64 & PG_FRAME;
316670eb A	237	} else {
	238	src = PHYSMAP_PTOV(src64);
	239	dst = PHYSMAP_PTOV(dst64);
7ddcb079 A	240	}
	241	/* DRK: debugger only routine, we don't bother checking for an
	242	* identical mapping.
	243	*/
	244	if (debug_pa) {
	245	if (debugger_window_kva == 0)
	246	panic("%s: invoked in non-debug mode", __FUNCTION__);
	247	/* Establish a cache-inhibited physical window; some platforms
	248	* may not cover arbitrary ranges with MTRRs
	249	*/
	250	pmap_store_pte(debugger_ptep, debug_pa \| INTEL_PTE_NCACHE \| INTEL_PTE_RW \| INTEL_PTE_REF\| INTEL_PTE_MOD \| INTEL_PTE_VALID);
	251	flush_tlb_raw();
	252	#if DEBUG
	253	kprintf("Remapping debugger physical window at %p to 0x%llx\n", (void *)debugger_window_kva, debug_pa);
	254	#endif
	255	}
b0d623f7 A	256	#endif
	257	/* ensure we stay within a page */
	258	if (((((uint32_t)src64 & (I386_PGBYTES-1)) + bytes) > I386_PGBYTES) \|\| ((((uint32_t)dst64 & (I386_PGBYTES-1)) + bytes) > I386_PGBYTES) ) {
	259	panic("ml_copy_phys spans pages, src: 0x%llx, dst: 0x%llx", src64, dst64);
	260	}
	261
39236c6e A	262	/*
	263	* For device register access from the debugger,
	264	* 2-byte/16-bit, 4-byte/32-bit and 8-byte/64-bit copies are handled
	265	* by assembly routines ensuring the required access widths.
	266	* 1-byte and other copies are handled by the regular _bcopy.
	267	*/
b0d623f7	268	switch (bytes) {
b0d623f7	269	case 2:
39236c6e	270	err = _bcopy2(src, dst);
b0d623f7 A	271	break;
b0d623f7 A	272	case 4:
39236c6e	273	err = _bcopy4(src, dst);
b0d623f7	274	break;
b0d623f7	275	case 8:
39236c6e	276	err = _bcopy8(src, dst);
b0d623f7	277	break;
39236c6e	278	case 1:
b0d623f7	279	default:
39236c6e	280	err = _bcopy(src, dst, bytes);
b0d623f7 A	281	break;
b0d623f7 A	282	}
39236c6e	283
b0d623f7 A	284	#if NCOPY_WINDOWS > 0
	285	pmap_put_mapwindow(src_map);
	286	pmap_put_mapwindow(dst_map);
	287	#endif
	288	mp_enable_preemption();
39236c6e A	289
39236c6e A	290	return err;
b0d623f7	291	}