| 0,0 → 1,103 |
|---|
| /* |
| * 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. |
| */ |
| |
| #ifndef __ia64_CONTEXT_H__ |
| #define __ia64_CONTEXT_H__ |
| |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <align.h> |
| #include <arch/stack.h> |
| |
| /* |
| * context_save() and context_restore() 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(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
| |
| #define PFM_MASK (~0x3fffffffff) |
| |
| #ifdef context_set |
| #undef context_set |
| #endif |
| |
| #define context_set(c, _pc, stack, size) \ |
| (c)->pc = (__address) _pc; \ |
| (c)->bsp = ((__address) stack) + ALIGN(sizeof(the_t), REGISTER_STACK_ALIGNMENT); \ |
| (c)->ar_pfs &= PFM_MASK; \ |
| (c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - SP_DELTA; |
| |
| /* |
| * Only save registers that must be preserved across |
| * function calls. |
| */ |
| struct context { |
| |
| /* |
| * Application registers |
| */ |
| __u64 ar_pfs; |
| __u64 ar_unat_caller; |
| __u64 ar_unat_callee; |
| __u64 ar_rsc; |
| __address bsp; /* ar_bsp */ |
| __u64 ar_rnat; |
| __u64 ar_lc; |
| |
| /* |
| * General registers |
| */ |
| __u64 r1; |
| __u64 r4; |
| __u64 r5; |
| __u64 r6; |
| __u64 r7; |
| __address sp; /* r12 */ |
| __u64 r13; |
| |
| /* |
| * Branch registers |
| */ |
| __address pc; /* b0 */ |
| __u64 b1; |
| __u64 b2; |
| __u64 b3; |
| __u64 b4; |
| __u64 b5; |
| |
| /* |
| * Predicate registers |
| */ |
| __u64 pr; |
| |
| ipl_t ipl; |
| } __attribute__ ((packed)); |
| |
| #endif |