161 lines
4.2 KiB
C
161 lines
4.2 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _IA32_SYS_STACK_H
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#define _IA32_SYS_STACK_H
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#if !defined(_ASM)
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#include <sys/types.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* In the x86 world, a stack frame looks like this:
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*
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* |--------------------------|
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* 4n+8(%ebp) ->| argument word n |
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* | ... | (Previous frame)
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* 8(%ebp) ->| argument word 0 |
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* |--------------------------|--------------------
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* 4(%ebp) ->| return address |
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* |--------------------------|
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* 0(%ebp) ->| previous %ebp (optional) |
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* |--------------------------|
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* -4(%ebp) ->| unspecified | (Current frame)
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* | ... |
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* 0(%esp) ->| variable size |
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* |--------------------------|
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*/
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/*
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* Stack alignment macros.
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*/
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#define STACK_ALIGN32 4
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#define STACK_ENTRY_ALIGN32 4
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#define STACK_BIAS32 0
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#define SA32(x) (((x)+(STACK_ALIGN32-1)) & ~(STACK_ALIGN32-1))
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#define STACK_RESERVE32 0
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#define MINFRAME32 0
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#if defined(__amd64)
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/*
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* In the amd64 world, a stack frame looks like this:
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*
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* |--------------------------|
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* 8n+16(%rbp)->| argument word n |
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* | ... | (Previous frame)
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* 16(%rbp) ->| argument word 0 |
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* |--------------------------|--------------------
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* 8(%rbp) ->| return address |
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* |--------------------------|
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* 0(%rbp) ->| previous %rbp |
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* |--------------------------|
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* -8(%rbp) ->| unspecified | (Current frame)
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* | ... |
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* 0(%rsp) ->| variable size |
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* |--------------------------|
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* -128(%rsp) ->| reserved for function |
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* |--------------------------|
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*
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* The end of the input argument area must be aligned on a 16-byte
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* boundary; i.e. (%rsp - 8) % 16 == 0 at function entry.
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*
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* The 128-byte location beyond %rsp is considered to be reserved for
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* functions and is NOT modified by signal handlers. It can be used
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* to store temporary data that is not needed across function calls.
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*/
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/*
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* Stack alignment macros.
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*/
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#define STACK_ALIGN64 16
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#define STACK_ENTRY_ALIGN64 8
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#define STACK_BIAS64 0
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#define SA64(x) (((x)+(STACK_ALIGN64-1)) & ~(STACK_ALIGN64-1))
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#define STACK_RESERVE64 128
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#define MINFRAME64 0
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#define STACK_ALIGN STACK_ALIGN64
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#define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN64
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#define STACK_BIAS STACK_BIAS64
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#define SA(x) SA64(x)
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#define STACK_RESERVE STACK_RESERVE64
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#define MINFRAME MINFRAME64
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#elif defined(__i386)
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#define STACK_ALIGN STACK_ALIGN32
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#define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN32
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#define STACK_BIAS STACK_BIAS32
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#define SA(x) SA32(x)
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#define STACK_RESERVE STACK_RESERVE32
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#define MINFRAME MINFRAME32
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#endif /* __i386 */
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#if defined(_KERNEL) && !defined(_ASM)
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#if defined(DEBUG)
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#if STACK_ALIGN == 4
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#define ASSERT_STACK_ALIGNED() \
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{ \
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uint32_t __tmp; \
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ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \
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}
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#elif (STACK_ALIGN == 16) && (_LONG_DOUBLE_ALIGNMENT == 16)
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#define ASSERT_STACK_ALIGNED() \
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{ \
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long double __tmp; \
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ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \
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}
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#endif
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#else /* DEBUG */
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#define ASSERT_STACK_ALIGNED()
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#endif /* DEBUG */
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struct regs;
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void traceregs(struct regs *);
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void traceback(caddr_t);
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#endif /* defined(_KERNEL) && !defined(_ASM) */
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#define STACK_GROWTH_DOWN /* stacks grow from high to low addresses */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _IA32_SYS_STACK_H */
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