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Rev 1228 Rev 1237
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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#include <libc.h>
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#include <libc.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <kernel/mm/as_arg.h>
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#include <task.h>
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/** Create address space area.
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/** Create address space area.
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 *
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 *
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 * @param address Virtual address where to place new address space area.
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 * @param address Virtual address where to place new address space area.
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 * @param size Size of the area.
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 * @param size Size of the area.
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void *as_area_resize(void *address, size_t size, int flags)
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void *as_area_resize(void *address, size_t size, int flags)
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{
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{
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    return (void *) __SYSCALL3(SYS_AS_AREA_RESIZE, (sysarg_t ) address, (sysarg_t) size, (sysarg_t) flags);
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    return (void *) __SYSCALL3(SYS_AS_AREA_RESIZE, (sysarg_t ) address, (sysarg_t) size, (sysarg_t) flags);
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}
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}
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/** Prepare to accept address space area.
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 *
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 * @param id Task ID of the donor task.
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 * @param base Destination address for the new address space area.
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 * @param size Size of the new address space area.
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 * @param flags Flags of the area TASK is willing to accept.
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 *
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 * @return 0 on success or a code from errno.h.
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 */
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int as_area_accept(task_id_t id, void *base, size_t size, int flags)
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{
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    as_area_acptsnd_arg_t arg;
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    arg.task_id = id;
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    arg.base = base;
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    arg.size = size;
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    arg.flags = flags;
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    return __SYSCALL1(SYS_AS_AREA_ACCEPT, (__native) &arg);
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}
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/** Send address space area to another task.
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 *
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 * @param id Task ID of the acceptor task.
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 * @param base Source address of the existing address space area.
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 *
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 * @return 0 on success or a code from errno.h.
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 */
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int as_area_send(task_id_t id, void *base)
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{
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    as_area_acptsnd_arg_t arg;
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    arg.task_id = id;
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    arg.base = base;
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    arg.size = 0;
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    arg.flags = 0;
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    return __SYSCALL1(SYS_AS_AREA_SEND, (__native) &arg);
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}
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static size_t heapsize = 0;
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static size_t heapsize = 0;
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/* Start of heap linker symbol */
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/* Start of heap linker symbol */
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extern char _heap;
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extern char _heap;
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/** Sbrk emulation
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/** Sbrk emulation