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Diffstat (limited to 'module/icp/include/sys/ia32/stack.h')
| -rw-r--r-- | module/icp/include/sys/ia32/stack.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/module/icp/include/sys/ia32/stack.h b/module/icp/include/sys/ia32/stack.h new file mode 100644 index 000000000000..9e7c089e1182 --- /dev/null +++ b/module/icp/include/sys/ia32/stack.h @@ -0,0 +1,160 @@ +/* + * 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 _IA32_SYS_STACK_H +#define _IA32_SYS_STACK_H + +#if !defined(_ASM) + +#include <sys/types.h> + +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * In the x86 world, a stack frame looks like this: + * + * |--------------------------| + * 4n+8(%ebp) ->| argument word n | + * | ... | (Previous frame) + * 8(%ebp) ->| argument word 0 | + * |--------------------------|-------------------- + * 4(%ebp) ->| return address | + * |--------------------------| + * 0(%ebp) ->| previous %ebp (optional) | + * |--------------------------| + * -4(%ebp) ->| unspecified | (Current frame) + * | ... | + * 0(%esp) ->| variable size | + * |--------------------------| + */ + +/* + * Stack alignment macros. + */ + +#define STACK_ALIGN32 4 +#define STACK_ENTRY_ALIGN32 4 +#define STACK_BIAS32 0 +#define SA32(x) (((x)+(STACK_ALIGN32-1)) & ~(STACK_ALIGN32-1)) +#define STACK_RESERVE32 0 +#define MINFRAME32 0 + +#if defined(__amd64) + +/* + * In the amd64 world, a stack frame looks like this: + * + * |--------------------------| + * 8n+16(%rbp)->| argument word n | + * | ... | (Previous frame) + * 16(%rbp) ->| argument word 0 | + * |--------------------------|-------------------- + * 8(%rbp) ->| return address | + * |--------------------------| + * 0(%rbp) ->| previous %rbp | + * |--------------------------| + * -8(%rbp) ->| unspecified | (Current frame) + * | ... | + * 0(%rsp) ->| variable size | + * |--------------------------| + * -128(%rsp) ->| reserved for function | + * |--------------------------| + * + * The end of the input argument area must be aligned on a 16-byte + * boundary; i.e. (%rsp - 8) % 16 == 0 at function entry. + * + * The 128-byte location beyond %rsp is considered to be reserved for + * functions and is NOT modified by signal handlers. It can be used + * to store temporary data that is not needed across function calls. + */ + +/* + * Stack alignment macros. + */ + +#define STACK_ALIGN64 16 +#define STACK_ENTRY_ALIGN64 8 +#define STACK_BIAS64 0 +#define SA64(x) (((x)+(STACK_ALIGN64-1)) & ~(STACK_ALIGN64-1)) +#define STACK_RESERVE64 128 +#define MINFRAME64 0 + +#define STACK_ALIGN STACK_ALIGN64 +#define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN64 +#define STACK_BIAS STACK_BIAS64 +#define SA(x) SA64(x) +#define STACK_RESERVE STACK_RESERVE64 +#define MINFRAME MINFRAME64 + +#elif defined(__i386) + +#define STACK_ALIGN STACK_ALIGN32 +#define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN32 +#define STACK_BIAS STACK_BIAS32 +#define SA(x) SA32(x) +#define STACK_RESERVE STACK_RESERVE32 +#define MINFRAME MINFRAME32 + +#endif /* __i386 */ + +#if defined(_KERNEL) && !defined(_ASM) + +#if defined(ZFS_DEBUG) +#if STACK_ALIGN == 4 +#define ASSERT_STACK_ALIGNED() \ + { \ + uint32_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 traceregs(struct regs *); +void traceback(caddr_t); + +#endif /* defined(_KERNEL) && !defined(_ASM) */ + +#define STACK_GROWTH_DOWN /* stacks grow from high to low addresses */ + +#ifdef __cplusplus +} +#endif + +#endif /* _IA32_SYS_STACK_H */ |