1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_FRAME_H 28 #define _SYS_FRAME_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/regset.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* 39 * In the Intel world, a stack frame looks like this: 40 * 41 * %fp0->| | 42 * |-------------------------------| 43 * | Args to next subroutine | 44 * |-------------------------------|-\ 45 * %sp0->| One word struct-ret address | | 46 * |-------------------------------| > minimum stack frame 47 * %fp1->| Previous frame pointer (%fp0)| | 48 * |-------------------------------|-/ 49 * | Local variables | 50 * %sp1->|-------------------------------| 51 * 52 * For amd64, the minimum stack frame is 16 bytes and the frame pointer must 53 * be 16-byte aligned. 54 */ 55 56 struct frame { 57 greg_t fr_savfp; /* saved frame pointer */ 58 greg_t fr_savpc; /* saved program counter */ 59 }; 60 61 #ifdef _SYSCALL32 62 63 /* 64 * Kernel's view of a 32-bit stack frame. 65 */ 66 struct frame32 { 67 greg32_t fr_savfp; /* saved frame pointer */ 68 greg32_t fr_savpc; /* saved program counter */ 69 }; 70 71 #endif 72 73 #ifdef __cplusplus 74 } 75 #endif 76 77 #endif /* _SYS_FRAME_H */ 78