1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _SYS_STACK_H 28*0Sstevel@tonic-gate #define _SYS_STACK_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #if !defined(_ASM) 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate #include <sys/types.h> 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #endif 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate #ifdef __cplusplus 39*0Sstevel@tonic-gate extern "C" { 40*0Sstevel@tonic-gate #endif 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate /* 43*0Sstevel@tonic-gate * A stack frame looks like: 44*0Sstevel@tonic-gate * 45*0Sstevel@tonic-gate * %fp->| | 46*0Sstevel@tonic-gate * |-------------------------------| 47*0Sstevel@tonic-gate * | Locals, temps, saved floats | 48*0Sstevel@tonic-gate * |-------------------------------| 49*0Sstevel@tonic-gate * | outgoing parameters past 6 | 50*0Sstevel@tonic-gate * |-------------------------------|-\ 51*0Sstevel@tonic-gate * | 6 words for callee to dump | | 52*0Sstevel@tonic-gate * | register arguments | | 53*0Sstevel@tonic-gate * |-------------------------------| > minimum stack frame 54*0Sstevel@tonic-gate * | One word struct-ret address | | 55*0Sstevel@tonic-gate * |-------------------------------| | 56*0Sstevel@tonic-gate * | 16 words to save IN and | | 57*0Sstevel@tonic-gate * %sp->| LOCAL register on overflow | | 58*0Sstevel@tonic-gate * |-------------------------------|-/ 59*0Sstevel@tonic-gate */ 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate /* 62*0Sstevel@tonic-gate * Constants defining a 32-bit stack frame. 63*0Sstevel@tonic-gate */ 64*0Sstevel@tonic-gate #define WINDOWSIZE32 (16*4) /* size of window save area */ 65*0Sstevel@tonic-gate #define ARGPUSHSIZE32 (6*4) /* size of arg dump area */ 66*0Sstevel@tonic-gate #define ARGPUSH32 (WINDOWSIZE32 + 4) /* arg dump area offset */ 67*0Sstevel@tonic-gate #define MINFRAME32 (WINDOWSIZE32 + ARGPUSHSIZE32 + 4) /* min frame */ 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate #define STACK_GROWTH_DOWN /* stacks grow from high to low addresses */ 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate /* 72*0Sstevel@tonic-gate * Stack alignment macros. 73*0Sstevel@tonic-gate */ 74*0Sstevel@tonic-gate #define STACK_ALIGN32 8 75*0Sstevel@tonic-gate #define STACK_ENTRY_ALIGN32 8 76*0Sstevel@tonic-gate #define SA32(X) (((X)+(STACK_ALIGN32-1)) & ~(STACK_ALIGN32-1)) 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate #if defined(__sparcv9) 79*0Sstevel@tonic-gate /* 80*0Sstevel@tonic-gate * The 64-bit C ABI uses a stack frame that looks like: 81*0Sstevel@tonic-gate * 82*0Sstevel@tonic-gate * | | 83*0Sstevel@tonic-gate * |-------------------------------| 84*0Sstevel@tonic-gate * | Locals, temps, saved floats | 85*0Sstevel@tonic-gate * |-------------------------------| 86*0Sstevel@tonic-gate * | outgoing parameters past 6 | 87*0Sstevel@tonic-gate * |-------------------------------|-\ 88*0Sstevel@tonic-gate * | outgoing parameters thru 6 | | 89*0Sstevel@tonic-gate * |-------------------------------| > minimum stack frame 90*0Sstevel@tonic-gate * | 16 xwords to save IN and | | 91*0Sstevel@tonic-gate * | LOCAL register on overflow | | 92*0Sstevel@tonic-gate * |-------------------------------|-/-\ 93*0Sstevel@tonic-gate * | | | 94*0Sstevel@tonic-gate * | | > v9 abi bias 95*0Sstevel@tonic-gate * | | | 96*0Sstevel@tonic-gate * %sp->|-------------------------------|---/ 97*0Sstevel@tonic-gate */ 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate /* 100*0Sstevel@tonic-gate * Constants defining a stack frame. 101*0Sstevel@tonic-gate */ 102*0Sstevel@tonic-gate #define WINDOWSIZE64 (16*8) /* size of window save area */ 103*0Sstevel@tonic-gate #define ARGPUSHSIZE64 (6*8) /* size of arg dump area */ 104*0Sstevel@tonic-gate #define MINFRAME64 (WINDOWSIZE64 + 48) /* min frame */ 105*0Sstevel@tonic-gate #define ARGPUSH64 (WINDOWSIZE64) /* arg dump area offset */ 106*0Sstevel@tonic-gate #define V9BIAS64 (2048-1) /* v9 abi stack bias */ 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate #define STACK_ALIGN64 16 109*0Sstevel@tonic-gate #define STACK_ENTRY_ALIGN64 16 110*0Sstevel@tonic-gate #define SA64(X) (((X)+(STACK_ALIGN64-1)) & ~(STACK_ALIGN64-1)) 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate #define IS_V9STACK(x) ((((uintptr_t)(x) + V9BIAS64) & \ 113*0Sstevel@tonic-gate (STACK_ALIGN64-1)) == 0) 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate #define WINDOWSIZE WINDOWSIZE64 116*0Sstevel@tonic-gate #define ARGPUSHSIZE ARGPUSHSIZE64 117*0Sstevel@tonic-gate #define ARGPUSH ARGPUSH64 118*0Sstevel@tonic-gate #define MINFRAME MINFRAME64 119*0Sstevel@tonic-gate #define STACK_ALIGN STACK_ALIGN64 120*0Sstevel@tonic-gate #define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN64 121*0Sstevel@tonic-gate #define STACK_BIAS V9BIAS64 122*0Sstevel@tonic-gate #define SA(x) SA64(x) 123*0Sstevel@tonic-gate 124*0Sstevel@tonic-gate #else 125*0Sstevel@tonic-gate 126*0Sstevel@tonic-gate #define WINDOWSIZE WINDOWSIZE32 127*0Sstevel@tonic-gate #define ARGPUSHSIZE ARGPUSHSIZE32 128*0Sstevel@tonic-gate #define ARGPUSH ARGPUSH32 129*0Sstevel@tonic-gate #define MINFRAME MINFRAME32 130*0Sstevel@tonic-gate #define STACK_ALIGN STACK_ALIGN32 131*0Sstevel@tonic-gate #define STACK_ENTRY_ALIGN STACK_ENTRY_ALIGN32 132*0Sstevel@tonic-gate #define STACK_BIAS 0 133*0Sstevel@tonic-gate #define SA(x) SA32(x) 134*0Sstevel@tonic-gate #define STACK_V9BIAS64 (2048-1) /* v9 abi stack bias */ 135*0Sstevel@tonic-gate 136*0Sstevel@tonic-gate #endif /* __sparcv9 */ 137*0Sstevel@tonic-gate 138*0Sstevel@tonic-gate #if defined(_KERNEL) && !defined(_ASM) 139*0Sstevel@tonic-gate 140*0Sstevel@tonic-gate #if defined(DEBUG) 141*0Sstevel@tonic-gate #if STACK_ALIGN == 8 142*0Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() \ 143*0Sstevel@tonic-gate { \ 144*0Sstevel@tonic-gate uint64_t __tmp; \ 145*0Sstevel@tonic-gate ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \ 146*0Sstevel@tonic-gate } 147*0Sstevel@tonic-gate #elif (STACK_ALIGN == 16) && (_LONG_DOUBLE_ALIGNMENT == 16) 148*0Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() \ 149*0Sstevel@tonic-gate { \ 150*0Sstevel@tonic-gate long double __tmp; \ 151*0Sstevel@tonic-gate ASSERT((((uintptr_t)&__tmp) & (STACK_ALIGN - 1)) == 0); \ 152*0Sstevel@tonic-gate } 153*0Sstevel@tonic-gate #endif 154*0Sstevel@tonic-gate #else /* DEBUG */ 155*0Sstevel@tonic-gate #define ASSERT_STACK_ALIGNED() 156*0Sstevel@tonic-gate #endif /* DEBUG */ 157*0Sstevel@tonic-gate 158*0Sstevel@tonic-gate struct regs; 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate void flush_windows(void); 161*0Sstevel@tonic-gate void flush_user_windows(void); 162*0Sstevel@tonic-gate int flush_user_windows_to_stack(caddr_t *); 163*0Sstevel@tonic-gate void trash_user_windows(void); 164*0Sstevel@tonic-gate void traceregs(struct regs *); 165*0Sstevel@tonic-gate void traceback(caddr_t); 166*0Sstevel@tonic-gate 167*0Sstevel@tonic-gate #endif /* defined(_KERNEL) && !defined(_ASM) */ 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate #ifdef __cplusplus 170*0Sstevel@tonic-gate } 171*0Sstevel@tonic-gate #endif 172*0Sstevel@tonic-gate 173*0Sstevel@tonic-gate #endif /* _SYS_STACK_H */ 174