/*
* Copyright (c) 2005 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 libcia64
* @{
*/
/** @file
*/
#ifndef _LIBC_ia64_FIBRIL_H_
#define _LIBC_ia64_FIBRIL_H_
#include <stdint.h>
#include <align.h>
#include <libarch/stack.h>
#include <types/common.h>
#include <libarch/fibril_context.h>
/*
* __context_save() and __context_restore() are both leaf procedures.
* No need to allocate scratch area.
*/
#define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
#define PFM_MASK (~0x3fffffffff)
/* Stack is divided into two equal parts (for memory stack and register stack). */
#define FIBRIL_INITIAL_STACK_DIVISION 2
#define context_set(c, _pc, stack, size, tls) \
do { \
(c)->pc = (uint64_t) _pc; \
(c)->bsp = ((uint64_t) stack) + \
size / FIBRIL_INITIAL_STACK_DIVISION; \
(c)->ar_pfs &= PFM_MASK; \
(c)->sp = ((uint64_t) stack) + \
ALIGN_UP((size / FIBRIL_INITIAL_STACK_DIVISION), STACK_ALIGNMENT) - \
SP_DELTA; \
(c)->tp = (uint64_t) tls; \
} while (0)
static inline uintptr_t _context_get_fp(context_t *ctx)
{
return 0; /* FIXME */
}
#endif
/** @}
*/