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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_STACK_H
#define _SYS_STACK_H
#pragma ident "%Z%%M% %I% %E% SMI"
#if !defined(_ASM)
#include <sys/types.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* A stack frame looks like:
*
* %fp->| |
* |-------------------------------|
* | Locals, temps, saved floats |
* |-------------------------------|
* | outgoing parameters past 6 |
* |-------------------------------|-\
* | 6 words for callee to dump | |
* | register arguments | |
* |-------------------------------| > minimum stack frame
* | One word struct-ret address | |
* |-------------------------------| |
* | 16 words to save IN and | |
* %sp->| LOCAL register on overflow | |
* |-------------------------------|-/
*/
/*
* Constants defining a 32-bit stack frame.
*/
#define WINDOWSIZE32 (16*4) /* size of window save area */
#define ARGPUSHSIZE32 (6*4) /* size of arg dump area */
#define ARGPUSH32 (WINDOWSIZE32 + 4) /* arg dump area offset */
#define MINFRAME32 (WINDOWSIZE32 + ARGPUSHSIZE32 + 4) /* min frame */
#define STACK_GROWTH_DOWN /* stacks grow from high to low addresses */
/*
* Stack alignment macros.
*/
#define STACK_ALIGN32 8
#define STACK_ENTRY_ALIGN32 8
#define SA32(X) (((X)+(STACK_ALIGN32-1)) & ~(STACK_ALIGN32-1))
#if defined(__sparcv9)
/*
* The 64-bit C ABI uses a stack frame that looks like:
*
* | |
* |-------------------------------|
* | Locals, temps, saved floats |
* |-------------------------------|
* | outgoing parameters past 6 |
* |-------------------------------|-\
* | outgoing parameters thru 6 | |
* |-------------------------------| > minimum stack frame
* | 16 xwords to save IN and | |
* | LOCAL register on overflow | |
* |-------------------------------|-/-\
* | | |
* | | > v9 abi bias
* | | |
* %sp->|-------------------------------|---/
*/
/*
* Constants defining a stack frame.
*/
#define WINDOWSIZE64 (16*8) /* size of window save area */
#define ARGPUSHSIZE64 (6*8) /* size of arg dump area */
#define MINFRAME64 (WINDOWSIZE64 + 48) /* min frame */
#define ARGPUSH64 (WINDOWSIZE64) /* arg dump area offset */
#define V9BIAS64 (2048-1) /* v9 abi stack bias */
#define STACK_ALIGN64 16
#define STACK_ENTRY_ALIGN64 16
#define SA64(X) (((X)+(STACK_ALIGN64-1)) & ~(STACK_ALIGN64-1))
#define IS_V9STACK(x) ((((uintptr_t)(x) + V9BIAS64) & \
(STACK_ALIGN64-1)) == 0)
#define WINDOWSIZE WINDOWSIZE64
#define ARGPUSHSIZE ARGPUSHSIZE64
#define ARGPUSH ARGPUSH64
#define MINFRAME MINFRAME64
#define STACK_ALIGN STACK_ALIGN64
#define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN64
#define STACK_BIAS V9BIAS64
#define SA(x) SA64(x)
#else
#define WINDOWSIZE WINDOWSIZE32
#define ARGPUSHSIZE ARGPUSHSIZE32
#define ARGPUSH ARGPUSH32
#define MINFRAME MINFRAME32
#define STACK_ALIGN STACK_ALIGN32
#define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN32
#define STACK_BIAS 0
#define SA(x) SA32(x)
#define STACK_V9BIAS64 (2048-1) /* v9 abi stack bias */
#endif /* __sparcv9 */
#if defined(_KERNEL) && !defined(_ASM)
#if defined(DEBUG)
#if STACK_ALIGN == 8
#define ASSERT_STACK_ALIGNED() \
{ \
uint64_t __tmp; \
ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \
}
#elif (STACK_ALIGN == 16) && (_LONG_DOUBLE_ALIGNMENT == 16)
#define ASSERT_STACK_ALIGNED() \
{ \
long double __tmp; \
ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \
}
#endif
#else /* DEBUG */
#define ASSERT_STACK_ALIGNED()
#endif /* DEBUG */
struct regs;
void flush_windows(void);
void flush_user_windows(void);
int flush_user_windows_to_stack(caddr_t *);
void trash_user_windows(void);
void traceregs(struct regs *);
void traceback(caddr_t);
#endif /* defined(_KERNEL) && !defined(_ASM) */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_STACK_H */
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