/*
* Copyright (c) 2007 Michal Kebrt
* 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 libcarm32
* @{
*/
/** @file
* @brief Fibrils related declarations.
*/
#ifndef _LIBC_arm32_FIBRIL_H_
#define _LIBC_arm32_FIBRIL_H_
#include <types/common.h>
#include <align.h>
#include <libarch/fibril_context.h>
/** Size of a stack item */
#define STACK_ITEM_SIZE 4
/** Stack alignment - see <a href="http://www.arm.com/support/faqdev/14269.html">ABI</a> for details */
#define STACK_ALIGNMENT 8
#define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
/** Sets data to the context.
*
* @param c Context (#context_t).
* @param _pc Program counter.
* @param stack Stack address.
* @param size Stack size.
* @param ptls Pointer to the TCB.
*/
#define context_set(c, _pc, stack, size, ptls) \
do { \
(c)->pc = (sysarg_t) (_pc); \
(c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \
(c)->tls = ((sysarg_t)(ptls)) + ARCH_TP_OFFSET; \
(c)->fp = 0; \
} while (0)
static inline uintptr_t _context_get_fp(context_t *ctx)
{
return ctx->fp;
}
#endif
/** @}
*/