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 _SYS_STACK_H 28*7c478bd9Sstevel@tonic-gate #define _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 * A stack frame looks like: 44*7c478bd9Sstevel@tonic-gate * 45*7c478bd9Sstevel@tonic-gate * %fp->| | 46*7c478bd9Sstevel@tonic-gate * |-------------------------------| 47*7c478bd9Sstevel@tonic-gate * | Locals, temps, saved floats | 48*7c478bd9Sstevel@tonic-gate * |-------------------------------| 49*7c478bd9Sstevel@tonic-gate * | outgoing parameters past 6 | 50*7c478bd9Sstevel@tonic-gate * |-------------------------------|-\ 51*7c478bd9Sstevel@tonic-gate * | 6 words for callee to dump | | 52*7c478bd9Sstevel@tonic-gate * | register arguments | | 53*7c478bd9Sstevel@tonic-gate * |-------------------------------| > minimum stack frame 54*7c478bd9Sstevel@tonic-gate * | One word struct-ret address | | 55*7c478bd9Sstevel@tonic-gate * |-------------------------------| | 56*7c478bd9Sstevel@tonic-gate * | 16 words to save IN and | | 57*7c478bd9Sstevel@tonic-gate * %sp->| LOCAL register on overflow | | 58*7c478bd9Sstevel@tonic-gate * |-------------------------------|-/ 59*7c478bd9Sstevel@tonic-gate */ 60*7c478bd9Sstevel@tonic-gate 61*7c478bd9Sstevel@tonic-gate /* 62*7c478bd9Sstevel@tonic-gate * Constants defining a 32-bit stack frame. 63*7c478bd9Sstevel@tonic-gate */ 64*7c478bd9Sstevel@tonic-gate #define WINDOWSIZE32 (16*4) /* size of window save area */ 65*7c478bd9Sstevel@tonic-gate #define ARGPUSHSIZE32 (6*4) /* size of arg dump area */ 66*7c478bd9Sstevel@tonic-gate #define ARGPUSH32 (WINDOWSIZE32 + 4) /* arg dump area offset */ 67*7c478bd9Sstevel@tonic-gate #define MINFRAME32 (WINDOWSIZE32 + ARGPUSHSIZE32 + 4) /* min frame */ 68*7c478bd9Sstevel@tonic-gate 69*7c478bd9Sstevel@tonic-gate #define STACK_GROWTH_DOWN /* stacks grow from high to low addresses */ 70*7c478bd9Sstevel@tonic-gate 71*7c478bd9Sstevel@tonic-gate /* 72*7c478bd9Sstevel@tonic-gate * Stack alignment macros. 73*7c478bd9Sstevel@tonic-gate */ 74*7c478bd9Sstevel@tonic-gate #define STACK_ALIGN32 8 75*7c478bd9Sstevel@tonic-gate #define STACK_ENTRY_ALIGN32 8 76*7c478bd9Sstevel@tonic-gate #define SA32(X) (((X)+(STACK_ALIGN32-1)) & ~(STACK_ALIGN32-1)) 77*7c478bd9Sstevel@tonic-gate 78*7c478bd9Sstevel@tonic-gate #if defined(__sparcv9) 79*7c478bd9Sstevel@tonic-gate /* 80*7c478bd9Sstevel@tonic-gate * The 64-bit C ABI uses a stack frame that looks like: 81*7c478bd9Sstevel@tonic-gate * 82*7c478bd9Sstevel@tonic-gate * | | 83*7c478bd9Sstevel@tonic-gate * |-------------------------------| 84*7c478bd9Sstevel@tonic-gate * | Locals, temps, saved floats | 85*7c478bd9Sstevel@tonic-gate * |-------------------------------| 86*7c478bd9Sstevel@tonic-gate * | outgoing parameters past 6 | 87*7c478bd9Sstevel@tonic-gate * |-------------------------------|-\ 88*7c478bd9Sstevel@tonic-gate * | outgoing parameters thru 6 | | 89*7c478bd9Sstevel@tonic-gate * |-------------------------------| > minimum stack frame 90*7c478bd9Sstevel@tonic-gate * | 16 xwords to save IN and | | 91*7c478bd9Sstevel@tonic-gate * | LOCAL register on overflow | | 92*7c478bd9Sstevel@tonic-gate * |-------------------------------|-/-\ 93*7c478bd9Sstevel@tonic-gate * | | | 94*7c478bd9Sstevel@tonic-gate * | | > v9 abi bias 95*7c478bd9Sstevel@tonic-gate * | | | 96*7c478bd9Sstevel@tonic-gate * %sp->|-------------------------------|---/ 97*7c478bd9Sstevel@tonic-gate */ 98*7c478bd9Sstevel@tonic-gate 99*7c478bd9Sstevel@tonic-gate /* 100*7c478bd9Sstevel@tonic-gate * Constants defining a stack frame. 101*7c478bd9Sstevel@tonic-gate */ 102*7c478bd9Sstevel@tonic-gate #define WINDOWSIZE64 (16*8) /* size of window save area */ 103*7c478bd9Sstevel@tonic-gate #define ARGPUSHSIZE64 (6*8) /* size of arg dump area */ 104*7c478bd9Sstevel@tonic-gate #define MINFRAME64 (WINDOWSIZE64 + 48) /* min frame */ 105*7c478bd9Sstevel@tonic-gate #define ARGPUSH64 (WINDOWSIZE64) /* arg dump area offset */ 106*7c478bd9Sstevel@tonic-gate #define V9BIAS64 (2048-1) /* v9 abi stack bias */ 107*7c478bd9Sstevel@tonic-gate 108*7c478bd9Sstevel@tonic-gate #define STACK_ALIGN64 16 109*7c478bd9Sstevel@tonic-gate #define STACK_ENTRY_ALIGN64 16 110*7c478bd9Sstevel@tonic-gate #define SA64(X) (((X)+(STACK_ALIGN64-1)) & ~(STACK_ALIGN64-1)) 111*7c478bd9Sstevel@tonic-gate 112*7c478bd9Sstevel@tonic-gate #define IS_V9STACK(x) ((((uintptr_t)(x) + V9BIAS64) & \ 113*7c478bd9Sstevel@tonic-gate (STACK_ALIGN64-1)) == 0) 114*7c478bd9Sstevel@tonic-gate 115*7c478bd9Sstevel@tonic-gate #define WINDOWSIZE WINDOWSIZE64 116*7c478bd9Sstevel@tonic-gate #define ARGPUSHSIZE ARGPUSHSIZE64 117*7c478bd9Sstevel@tonic-gate #define ARGPUSH ARGPUSH64 118*7c478bd9Sstevel@tonic-gate #define MINFRAME MINFRAME64 119*7c478bd9Sstevel@tonic-gate #define STACK_ALIGN STACK_ALIGN64 120*7c478bd9Sstevel@tonic-gate #define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN64 121*7c478bd9Sstevel@tonic-gate #define STACK_BIAS V9BIAS64 122*7c478bd9Sstevel@tonic-gate #define SA(x) SA64(x) 123*7c478bd9Sstevel@tonic-gate 124*7c478bd9Sstevel@tonic-gate #else 125*7c478bd9Sstevel@tonic-gate 126*7c478bd9Sstevel@tonic-gate #define WINDOWSIZE WINDOWSIZE32 127*7c478bd9Sstevel@tonic-gate #define ARGPUSHSIZE ARGPUSHSIZE32 128*7c478bd9Sstevel@tonic-gate #define ARGPUSH ARGPUSH32 129*7c478bd9Sstevel@tonic-gate #define MINFRAME MINFRAME32 130*7c478bd9Sstevel@tonic-gate #define STACK_ALIGN STACK_ALIGN32 131*7c478bd9Sstevel@tonic-gate #define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN32 132*7c478bd9Sstevel@tonic-gate #define STACK_BIAS 0 133*7c478bd9Sstevel@tonic-gate #define SA(x) SA32(x) 134*7c478bd9Sstevel@tonic-gate #define STACK_V9BIAS64 (2048-1) /* v9 abi stack bias */ 135*7c478bd9Sstevel@tonic-gate 136*7c478bd9Sstevel@tonic-gate #endif /* __sparcv9 */ 137*7c478bd9Sstevel@tonic-gate 138*7c478bd9Sstevel@tonic-gate #if defined(_KERNEL) && !defined(_ASM) 139*7c478bd9Sstevel@tonic-gate 140*7c478bd9Sstevel@tonic-gate #if defined(DEBUG) 141*7c478bd9Sstevel@tonic-gate #if STACK_ALIGN == 8 142*7c478bd9Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() \ 143*7c478bd9Sstevel@tonic-gate { \ 144*7c478bd9Sstevel@tonic-gate uint64_t __tmp; \ 145*7c478bd9Sstevel@tonic-gate ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \ 146*7c478bd9Sstevel@tonic-gate } 147*7c478bd9Sstevel@tonic-gate #elif (STACK_ALIGN == 16) && (_LONG_DOUBLE_ALIGNMENT == 16) 148*7c478bd9Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() \ 149*7c478bd9Sstevel@tonic-gate { \ 150*7c478bd9Sstevel@tonic-gate long double __tmp; \ 151*7c478bd9Sstevel@tonic-gate ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \ 152*7c478bd9Sstevel@tonic-gate } 153*7c478bd9Sstevel@tonic-gate #endif 154*7c478bd9Sstevel@tonic-gate #else /* DEBUG */ 155*7c478bd9Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() 156*7c478bd9Sstevel@tonic-gate #endif /* DEBUG */ 157*7c478bd9Sstevel@tonic-gate 158*7c478bd9Sstevel@tonic-gate struct regs; 159*7c478bd9Sstevel@tonic-gate 160*7c478bd9Sstevel@tonic-gate void flush_windows(void); 161*7c478bd9Sstevel@tonic-gate void flush_user_windows(void); 162*7c478bd9Sstevel@tonic-gate int flush_user_windows_to_stack(caddr_t *); 163*7c478bd9Sstevel@tonic-gate void trash_user_windows(void); 164*7c478bd9Sstevel@tonic-gate void traceregs(struct regs *); 165*7c478bd9Sstevel@tonic-gate void traceback(caddr_t); 166*7c478bd9Sstevel@tonic-gate 167*7c478bd9Sstevel@tonic-gate #endif /* defined(_KERNEL) && !defined(_ASM) */ 168*7c478bd9Sstevel@tonic-gate 169*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 170*7c478bd9Sstevel@tonic-gate } 171*7c478bd9Sstevel@tonic-gate #endif 172*7c478bd9Sstevel@tonic-gate 173*7c478bd9Sstevel@tonic-gate #endif /* _SYS_STACK_H */ 174