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root/uspace/lib/c/arch/sparc64/include/libarch/thread.h

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INCLUDED FROM


DEFINITIONS

This source file includes following definitions.
  1. arch_thread_prepare

/*
 * Copyright (c) 2006 Ondrej Palkovsky
 * 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 libcsparc64
 * @{
 */

#ifndef _LIBC_sparc64_THREAD_H_
#define _LIBC_sparc64_THREAD_H_

#include <assert.h>
#include <align.h>
#include <libarch/stack.h>

static inline uintptr_t arch_thread_prepare(void *stack, size_t stack_size,
    void (*main)(void *), void *arg)
{
        /* We must leave space above the stack pointer for initial register spill area. */
        uintptr_t *sp = (uintptr_t *) ALIGN_DOWN((uintptr_t) stack + stack_size - STACK_WINDOW_SAVE_AREA_SIZE - STACK_ARG_SAVE_AREA_SIZE, 16);

        sp[-1] = (uintptr_t) arg;
        sp[-2] = (uintptr_t) main;

        return ((uintptr_t) sp) - STACK_BIAS;
}

#endif

/** @}
 */

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