/*
* Copyright (c) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup libc
* @{
*/
/** @file
*/
#include <as.h>
#include <libc.h>
#include <errno.h>
#include <align.h>
#include <stddef.h>
#include <stdint.h>
#include <bitops.h>
#include "private/libc.h"
/** Create address space area.
*
* @param base Starting virtual address of the area.
* If set to AS_AREA_ANY ((void *) -1), the kernel finds a
* mappable area.
* @param size Size of the area.
* @param flags Flags describing type of the area.
* @param pager_info Pager info structure or AS_AREA_UNPAGED (NULL) if the area
* is not paged (i.e. anonymous).
*
* @return Starting virtual address of the created area on success.
* @return AS_MAP_FAILED ((void *) -1) otherwise.
*
*/
void *as_area_create(void *base, size_t size, unsigned int flags,
as_area_pager_info_t *pager_info)
{
return (void *) __SYSCALL5(SYS_AS_AREA_CREATE, (sysarg_t) base,
(sysarg_t) size, (sysarg_t) flags, (sysarg_t) __progsymbols.end,
(sysarg_t) pager_info);
}
/** Resize address space area.
*
* @param address Virtual address pointing into already existing address space
* area.
* @param size New requested size of the area.
* @param flags Currently unused.
*
* @return zero on success or a code from @ref errno.h on failure.
*
*/
errno_t as_area_resize(void *address, size_t size, unsigned int flags)
{
return (errno_t) __SYSCALL3(SYS_AS_AREA_RESIZE, (sysarg_t) address,
(sysarg_t) size, (sysarg_t) flags);
}
/** Destroy address space area.
*
* @param address Virtual address pointing into the address space area being
* destroyed.
*
* @return zero on success or a code from @ref errno.h on failure.
*
*/
errno_t as_area_destroy(void *address)
{
return (errno_t) __SYSCALL1(SYS_AS_AREA_DESTROY, (sysarg_t) address);
}
/** Change address-space area flags.
*
* @param address Virtual address pointing into the address space area being
* modified.
* @param flags New flags describing type of the area.
*
* @return zero on success or a code from @ref errno.h on failure.
*
*/
errno_t as_area_change_flags(void *address, unsigned int flags)
{
return (errno_t) __SYSCALL2(SYS_AS_AREA_CHANGE_FLAGS, (sysarg_t) address,
(sysarg_t) flags);
}
/** Get address-space area information.
*
* @param address Virtual address pointing into the address space area being
* modified.
* @param info Pointer to information structure to fill in.
*
* @return zero on success or a code from @ref errno.h on failure.
*
*/
errno_t as_area_get_info(void *address, as_area_info_t *info)
{
return (errno_t) __SYSCALL2(SYS_AS_AREA_GET_INFO, (sysarg_t) address,
(sysarg_t) info);
}
/** Find mapping to physical address.
*
* @param virt Virtual address to find mapping for.
* @param[out] phys Physical address.
*
* @return EOK on no error.
* @retval ENOENT if no mapping was found.
*
*/
errno_t as_get_physical_mapping(const void *virt, uintptr_t *phys)
{
return (errno_t) __SYSCALL2(SYS_PAGE_FIND_MAPPING, (sysarg_t) virt,
(sysarg_t) phys);
}
/** @}
*/