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_FRAME_H 28*7c478bd9Sstevel@tonic-gate #define _SYS_FRAME_H 29*7c478bd9Sstevel@tonic-gate 30*7c478bd9Sstevel@tonic-gate #include <sys/regset.h> 31*7c478bd9Sstevel@tonic-gate 32*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 33*7c478bd9Sstevel@tonic-gate extern "C" { 34*7c478bd9Sstevel@tonic-gate #endif 35*7c478bd9Sstevel@tonic-gate 36*7c478bd9Sstevel@tonic-gate /* 37*7c478bd9Sstevel@tonic-gate * In the Intel world, a stack frame looks like this: 38*7c478bd9Sstevel@tonic-gate * 39*7c478bd9Sstevel@tonic-gate * %fp0->| | 40*7c478bd9Sstevel@tonic-gate * |-------------------------------| 41*7c478bd9Sstevel@tonic-gate * | Args to next subroutine | 42*7c478bd9Sstevel@tonic-gate * |-------------------------------|-\ 43*7c478bd9Sstevel@tonic-gate * %sp0->| One word struct-ret address | | 44*7c478bd9Sstevel@tonic-gate * |-------------------------------| > minimum stack frame 45*7c478bd9Sstevel@tonic-gate * %fp1->| Previous frame pointer (%fp0)| | 46*7c478bd9Sstevel@tonic-gate * |-------------------------------|-/ 47*7c478bd9Sstevel@tonic-gate * | Local variables | 48*7c478bd9Sstevel@tonic-gate * %sp1->|-------------------------------| 49*7c478bd9Sstevel@tonic-gate * 50*7c478bd9Sstevel@tonic-gate * For amd64, the minimum stack frame is 16 bytes and the frame pointer must 51*7c478bd9Sstevel@tonic-gate * be 16-byte aligned. 52*7c478bd9Sstevel@tonic-gate */ 53*7c478bd9Sstevel@tonic-gate 54*7c478bd9Sstevel@tonic-gate struct frame { 55*7c478bd9Sstevel@tonic-gate greg_t fr_savfp; /* saved frame pointer */ 56*7c478bd9Sstevel@tonic-gate greg_t fr_savpc; /* saved program counter */ 57*7c478bd9Sstevel@tonic-gate }; 58*7c478bd9Sstevel@tonic-gate 59*7c478bd9Sstevel@tonic-gate #ifdef _SYSCALL32 60*7c478bd9Sstevel@tonic-gate 61*7c478bd9Sstevel@tonic-gate /* 62*7c478bd9Sstevel@tonic-gate * Kernel's view of a 32-bit stack frame. 63*7c478bd9Sstevel@tonic-gate */ 64*7c478bd9Sstevel@tonic-gate struct frame32 { 65*7c478bd9Sstevel@tonic-gate greg32_t fr_savfp; /* saved frame pointer */ 66*7c478bd9Sstevel@tonic-gate greg32_t fr_savpc; /* saved program counter */ 67*7c478bd9Sstevel@tonic-gate }; 68*7c478bd9Sstevel@tonic-gate 69*7c478bd9Sstevel@tonic-gate #endif 70*7c478bd9Sstevel@tonic-gate 71*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 72*7c478bd9Sstevel@tonic-gate } 73*7c478bd9Sstevel@tonic-gate #endif 74*7c478bd9Sstevel@tonic-gate 75*7c478bd9Sstevel@tonic-gate #endif /* _SYS_FRAME_H */ 76