1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #ifndef _IA32_SYS_STACK_H 28*7c478bd9Sstevel@tonic-gate #define _IA32_SYS_STACK_H 29*7c478bd9Sstevel@tonic-gate 30*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*7c478bd9Sstevel@tonic-gate 32*7c478bd9Sstevel@tonic-gate #if !defined(_ASM) 33*7c478bd9Sstevel@tonic-gate 34*7c478bd9Sstevel@tonic-gate #include <sys/types.h> 35*7c478bd9Sstevel@tonic-gate 36*7c478bd9Sstevel@tonic-gate #endif 37*7c478bd9Sstevel@tonic-gate 38*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 39*7c478bd9Sstevel@tonic-gate extern "C" { 40*7c478bd9Sstevel@tonic-gate #endif 41*7c478bd9Sstevel@tonic-gate 42*7c478bd9Sstevel@tonic-gate /* 43*7c478bd9Sstevel@tonic-gate * In the x86 world, a stack frame looks like this: 44*7c478bd9Sstevel@tonic-gate * 45*7c478bd9Sstevel@tonic-gate * |--------------------------| 46*7c478bd9Sstevel@tonic-gate * 4n+8(%ebp) ->| argument word n | 47*7c478bd9Sstevel@tonic-gate * | ... | (Previous frame) 48*7c478bd9Sstevel@tonic-gate * 8(%ebp) ->| argument word 0 | 49*7c478bd9Sstevel@tonic-gate * |--------------------------|-------------------- 50*7c478bd9Sstevel@tonic-gate * 4(%ebp) ->| return address | 51*7c478bd9Sstevel@tonic-gate * |--------------------------| 52*7c478bd9Sstevel@tonic-gate * 0(%ebp) ->| previous %ebp (optional) | 53*7c478bd9Sstevel@tonic-gate * |--------------------------| 54*7c478bd9Sstevel@tonic-gate * -4(%ebp) ->| unspecified | (Current frame) 55*7c478bd9Sstevel@tonic-gate * | ... | 56*7c478bd9Sstevel@tonic-gate * 0(%esp) ->| variable size | 57*7c478bd9Sstevel@tonic-gate * |--------------------------| 58*7c478bd9Sstevel@tonic-gate */ 59*7c478bd9Sstevel@tonic-gate 60*7c478bd9Sstevel@tonic-gate /* 61*7c478bd9Sstevel@tonic-gate * Stack alignment macros. 62*7c478bd9Sstevel@tonic-gate */ 63*7c478bd9Sstevel@tonic-gate 64*7c478bd9Sstevel@tonic-gate #define STACK_ALIGN32 4 65*7c478bd9Sstevel@tonic-gate #define STACK_ENTRY_ALIGN32 4 66*7c478bd9Sstevel@tonic-gate #define STACK_BIAS32 0 67*7c478bd9Sstevel@tonic-gate #define SA32(x) (((x)+(STACK_ALIGN32-1)) & ~(STACK_ALIGN32-1)) 68*7c478bd9Sstevel@tonic-gate #define STACK_RESERVE32 0 69*7c478bd9Sstevel@tonic-gate #define MINFRAME32 0 70*7c478bd9Sstevel@tonic-gate 71*7c478bd9Sstevel@tonic-gate #if defined(__amd64) 72*7c478bd9Sstevel@tonic-gate 73*7c478bd9Sstevel@tonic-gate /* 74*7c478bd9Sstevel@tonic-gate * In the amd64 world, a stack frame looks like this: 75*7c478bd9Sstevel@tonic-gate * 76*7c478bd9Sstevel@tonic-gate * |--------------------------| 77*7c478bd9Sstevel@tonic-gate * 8n+16(%rbp)->| argument word n | 78*7c478bd9Sstevel@tonic-gate * | ... | (Previous frame) 79*7c478bd9Sstevel@tonic-gate * 16(%rbp) ->| argument word 0 | 80*7c478bd9Sstevel@tonic-gate * |--------------------------|-------------------- 81*7c478bd9Sstevel@tonic-gate * 8(%rbp) ->| return address | 82*7c478bd9Sstevel@tonic-gate * |--------------------------| 83*7c478bd9Sstevel@tonic-gate * 0(%rbp) ->| previous %rbp | 84*7c478bd9Sstevel@tonic-gate * |--------------------------| 85*7c478bd9Sstevel@tonic-gate * -8(%rbp) ->| unspecified | (Current frame) 86*7c478bd9Sstevel@tonic-gate * | ... | 87*7c478bd9Sstevel@tonic-gate * 0(%rsp) ->| variable size | 88*7c478bd9Sstevel@tonic-gate * |--------------------------| 89*7c478bd9Sstevel@tonic-gate * -128(%rsp) ->| reserved for function | 90*7c478bd9Sstevel@tonic-gate * |--------------------------| 91*7c478bd9Sstevel@tonic-gate * 92*7c478bd9Sstevel@tonic-gate * The end of the input argument area must be aligned on a 16-byte 93*7c478bd9Sstevel@tonic-gate * boundary; i.e. (%rsp - 8) % 16 == 0 at function entry. 94*7c478bd9Sstevel@tonic-gate * 95*7c478bd9Sstevel@tonic-gate * The 128-byte location beyond %rsp is considered to be reserved for 96*7c478bd9Sstevel@tonic-gate * functions and is NOT modified by signal handlers. It can be used 97*7c478bd9Sstevel@tonic-gate * to store temporary data that is not needed across function calls. 98*7c478bd9Sstevel@tonic-gate */ 99*7c478bd9Sstevel@tonic-gate 100*7c478bd9Sstevel@tonic-gate /* 101*7c478bd9Sstevel@tonic-gate * Stack alignment macros. 102*7c478bd9Sstevel@tonic-gate */ 103*7c478bd9Sstevel@tonic-gate 104*7c478bd9Sstevel@tonic-gate #define STACK_ALIGN64 16 105*7c478bd9Sstevel@tonic-gate #define STACK_ENTRY_ALIGN64 8 106*7c478bd9Sstevel@tonic-gate #define STACK_BIAS64 0 107*7c478bd9Sstevel@tonic-gate #define SA64(x) (((x)+(STACK_ALIGN64-1)) & ~(STACK_ALIGN64-1)) 108*7c478bd9Sstevel@tonic-gate #define STACK_RESERVE64 128 109*7c478bd9Sstevel@tonic-gate #define MINFRAME64 0 110*7c478bd9Sstevel@tonic-gate 111*7c478bd9Sstevel@tonic-gate #define STACK_ALIGN STACK_ALIGN64 112*7c478bd9Sstevel@tonic-gate #define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN64 113*7c478bd9Sstevel@tonic-gate #define STACK_BIAS STACK_BIAS64 114*7c478bd9Sstevel@tonic-gate #define SA(x) SA64(x) 115*7c478bd9Sstevel@tonic-gate #define STACK_RESERVE STACK_RESERVE64 116*7c478bd9Sstevel@tonic-gate #define MINFRAME MINFRAME64 117*7c478bd9Sstevel@tonic-gate 118*7c478bd9Sstevel@tonic-gate #elif defined(__i386) 119*7c478bd9Sstevel@tonic-gate 120*7c478bd9Sstevel@tonic-gate #define STACK_ALIGN STACK_ALIGN32 121*7c478bd9Sstevel@tonic-gate #define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN32 122*7c478bd9Sstevel@tonic-gate #define STACK_BIAS STACK_BIAS32 123*7c478bd9Sstevel@tonic-gate #define SA(x) SA32(x) 124*7c478bd9Sstevel@tonic-gate #define STACK_RESERVE STACK_RESERVE32 125*7c478bd9Sstevel@tonic-gate #define MINFRAME MINFRAME32 126*7c478bd9Sstevel@tonic-gate 127*7c478bd9Sstevel@tonic-gate #endif /* __i386 */ 128*7c478bd9Sstevel@tonic-gate 129*7c478bd9Sstevel@tonic-gate #if defined(_KERNEL) && !defined(_ASM) 130*7c478bd9Sstevel@tonic-gate 131*7c478bd9Sstevel@tonic-gate #if defined(DEBUG) 132*7c478bd9Sstevel@tonic-gate #if STACK_ALIGN == 4 133*7c478bd9Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() \ 134*7c478bd9Sstevel@tonic-gate { \ 135*7c478bd9Sstevel@tonic-gate uint32_t __tmp; \ 136*7c478bd9Sstevel@tonic-gate ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \ 137*7c478bd9Sstevel@tonic-gate } 138*7c478bd9Sstevel@tonic-gate #elif (STACK_ALIGN == 16) && (_LONG_DOUBLE_ALIGNMENT == 16) 139*7c478bd9Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() \ 140*7c478bd9Sstevel@tonic-gate { \ 141*7c478bd9Sstevel@tonic-gate long double __tmp; \ 142*7c478bd9Sstevel@tonic-gate ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \ 143*7c478bd9Sstevel@tonic-gate } 144*7c478bd9Sstevel@tonic-gate #endif 145*7c478bd9Sstevel@tonic-gate #else /* DEBUG */ 146*7c478bd9Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() 147*7c478bd9Sstevel@tonic-gate #endif /* DEBUG */ 148*7c478bd9Sstevel@tonic-gate 149*7c478bd9Sstevel@tonic-gate struct regs; 150*7c478bd9Sstevel@tonic-gate 151*7c478bd9Sstevel@tonic-gate void traceregs(struct regs *); 152*7c478bd9Sstevel@tonic-gate void traceback(caddr_t); 153*7c478bd9Sstevel@tonic-gate 154*7c478bd9Sstevel@tonic-gate #endif /* defined(_KERNEL) && !defined(_ASM) */ 155*7c478bd9Sstevel@tonic-gate 156*7c478bd9Sstevel@tonic-gate #define STACK_GROWTH_DOWN /* stacks grow from high to low addresses */ 157*7c478bd9Sstevel@tonic-gate 158*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 159*7c478bd9Sstevel@tonic-gate } 160*7c478bd9Sstevel@tonic-gate #endif 161*7c478bd9Sstevel@tonic-gate 162*7c478bd9Sstevel@tonic-gate #endif /* _IA32_SYS_STACK_H */ 163