| /SPARTAN/trunk/arch/ia64/include/stack.h |
|---|
| 0,0 → 1,37 |
| /* |
| * 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_STACK_H__ |
| #define __ia64_STACK_H__ |
| #define STACK_ITEM_SIZE 16 |
| #define STACK_ALIGNMENT 16 |
| #define STACK_SCRATCH_AREA_SIZE 16 |
| #define REGISTER_STACK_ALIGNMENT 8 |
| #endif |
| /SPARTAN/trunk/arch/ia64/include/context.h |
|---|
| 32,11 → 32,8 |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <align.h> |
| #include <arch/stack.h> |
| #define STACK_ITEM_SIZE 16 |
| #define STACK_ALIGNMENT 16 |
| #define REGISTER_STACK_ALIGNMENT 8 |
| /* |
| * context_save() and context_restore() are both leaf procedures. |
| * No need to allocate scratch area. |
| /SPARTAN/trunk/arch/ia64/src/ivt.S |
|---|
| 26,7 → 26,15 |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| #include <arch/stack.h> |
| #define STACK_ITEMS 12 |
| #define STACK_FRAME_SIZE ((STACK_ITEMS*STACK_ITEM_SIZE) + STACK_SCRATCH_AREA_SIZE) |
| #if (STACK_FRAME_SIZE % STACK_ALIGNMENT != 0) |
| #error Memory stack must be 16-byte aligned. |
| #endif |
| /** Heavyweight interrupt handler |
| * |
| * This macro roughly follows steps from 1 to 19 described in |
| 57,15 → 65,16 |
| /* assume kernel stack */ |
| /* 4. save registers in bank 0 into memory stack */ |
| add r12 = -8, r12 ;; |
| add r31 = -8, r12 ;; |
| add r12 = -STACK_FRAME_SIZE, r12 ;; |
| st8 [r12] = r29, -8 ;; /* save predicate registers */ |
| st8 [r31] = r29, -8 ;; /* save predicate registers */ |
| st8 [r12] = r24, -8 ;; /* save cr.iip */ |
| st8 [r12] = r25, -8 ;; /* save cr.ipsr */ |
| st8 [r12] = r26, -8 ;; /* save cr.iipa */ |
| st8 [r12] = r27, -8 ;; /* save cr.isr */ |
| st8 [r12] = r28, -8 ;; /* save cr.ifa */ |
| st8 [r31] = r24, -8 ;; /* save cr.iip */ |
| st8 [r31] = r25, -8 ;; /* save cr.ipsr */ |
| st8 [r31] = r26, -8 ;; /* save cr.iipa */ |
| st8 [r31] = r27, -8 ;; /* save cr.isr */ |
| st8 [r31] = r28, -8 ;; /* save cr.ifa */ |
| /* 5. RSE switch from interrupted context */ |
| .auto |
| 74,9 → 83,9 |
| cover |
| mov r26 = cr.ifs |
| st8 [r12] = r24, -8 /* save ar.rsc */ |
| st8 [r12] = r25, -8 /* save ar.pfs */ |
| st8 [r12] = r26, -8 /* save ar.ifs */ |
| st8 [r31] = r24, -8 /* save ar.rsc */ |
| st8 [r31] = r25, -8 /* save ar.pfs */ |
| st8 [r31] = r26, -8 /* save ar.ifs */ |
| and r30 = ~3, r24 |
| mov ar.rsc = r30 /* place RSE in enforced lazy mode */ |
| 89,9 → 98,9 |
| mov r29 = ar.bsp |
| st8 [r12] = r27, -8 /* save ar.rnat */ |
| st8 [r12] = r28, -8 /* save ar.bspstore */ |
| st8 [r12] = r29 /* save ar.bsp */ |
| st8 [r31] = r27, -8 /* save ar.rnat */ |
| st8 [r31] = r28, -8 /* save ar.bspstore */ |
| st8 [r31] = r29 /* save ar.bsp */ |
| mov ar.rsc = r24 /* restore RSE's setting */ |
| .explicit |