0,0 → 1,135 |
/* |
* 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 ia64 |
* @{ |
*/ |
/** @file |
*/ |
|
#ifndef KERN_ia64_CONTEXT_H_ |
#define KERN_ia64_CONTEXT_H_ |
|
#include <arch/types.h> |
#include <arch/register.h> |
#include <align.h> |
#include <arch/stack.h> |
|
/* |
* context_save_arch() and context_restore_arch() are both leaf procedures. |
* No need to allocate scratch area. |
* |
* One item is put onto the stack to support get_stack_base(). |
*/ |
#define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
|
#ifdef context_set |
#undef context_set |
#endif |
|
/* RSE stack starts at the bottom of memory stack. */ |
#define context_set(c, _pc, stack, size) \ |
do { \ |
(c)->pc = (uintptr_t) _pc; \ |
(c)->bsp = ((uintptr_t) stack) + ALIGN_UP((size), REGISTER_STACK_ALIGNMENT); \ |
(c)->ar_pfs &= PFM_MASK; \ |
(c)->sp = ((uintptr_t) stack) + ALIGN_UP((size), STACK_ALIGNMENT) - SP_DELTA; \ |
} while (0); |
|
/* |
* Only save registers that must be preserved across |
* function calls. |
*/ |
typedef struct { |
|
/* |
* Application registers |
*/ |
uint64_t ar_pfs; |
uint64_t ar_unat_caller; |
uint64_t ar_unat_callee; |
uint64_t ar_rsc; |
uintptr_t bsp; /* ar_bsp */ |
uint64_t ar_rnat; |
uint64_t ar_lc; |
|
/* |
* General registers |
*/ |
uint64_t r1; |
uint64_t r4; |
uint64_t r5; |
uint64_t r6; |
uint64_t r7; |
uintptr_t sp; /* r12 */ |
uint64_t r13; |
|
/* |
* Branch registers |
*/ |
uintptr_t pc; /* b0 */ |
uint64_t b1; |
uint64_t b2; |
uint64_t b3; |
uint64_t b4; |
uint64_t b5; |
|
/* |
* Predicate registers |
*/ |
uint64_t pr; |
|
uint128_t f2 __attribute__ ((aligned(16))); |
uint128_t f3; |
uint128_t f4; |
uint128_t f5; |
|
uint128_t f16; |
uint128_t f17; |
uint128_t f18; |
uint128_t f19; |
uint128_t f20; |
uint128_t f21; |
uint128_t f22; |
uint128_t f23; |
uint128_t f24; |
uint128_t f25; |
uint128_t f26; |
uint128_t f27; |
uint128_t f28; |
uint128_t f29; |
uint128_t f30; |
uint128_t f31; |
|
ipl_t ipl; |
} context_t; |
|
#endif |
|
/** @} |
*/ |