1 /* $OpenBSD: frame.h,v 1.6 2011/03/23 16:54:37 pirofti Exp $ */ 2 /* $NetBSD: frame.h,v 1.9 2001/03/04 09:28:35 mrg Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This software was developed by the Computer Systems Engineering group 9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 10 * contributed to Berkeley. 11 * 12 * All advertising materials mentioning features or use of this software 13 * must display the following acknowledgement: 14 * This product includes software developed by the University of 15 * California, Lawrence Berkeley Laboratory. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 3. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)frame.h 8.1 (Berkeley) 6/11/93 42 */ 43 44 #ifndef _MACHINE_FRAME_H_ 45 #define _MACHINE_FRAME_H_ 46 47 /* 48 * Sparc stack frame format. 49 * 50 * Note that the contents of each stack frame may be held only in 51 * machine register windows. In order to get an accurate picture 52 * of the frame, you must first force the kernel to write any such 53 * windows to the stack. 54 */ 55 #ifndef _LOCORE 56 struct frame32 { 57 int32_t fr_local[8]; /* space to save locals (%l0..%l7) */ 58 int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ 59 u_int32_t fr_fp; /* space to save frame pointer (%i6) */ 60 u_int32_t fr_pc; /* space to save return pc (%i7) */ 61 /* 62 * SunOS reserves another 8 words here; this is pointless 63 * but we do it for compatibility. 64 */ 65 int32_t fr_xxx; /* `structure return pointer' (unused) */ 66 int32_t fr_argd[6]; /* `arg dump area' (lunacy) */ 67 int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */ 68 }; 69 #endif 70 71 /* 72 * CCFSZ (C Compiler Frame SiZe) is the size of a stack frame required if 73 * a function is to call C code. It should be just 64, but Sun defined 74 * their frame with space to hold arguments 0 through 5 (plus some junk), 75 * and varargs routines (such as kprintf) demand this, and gcc uses this 76 * area at times anyway. 77 */ 78 #define CCFSZ 96 79 80 /* 81 * Sparc v9 stack frame format. 82 * 83 * Note that the contents of each stack frame may be held only in 84 * machine register windows. In order to get an accurate picture 85 * of the frame, you must first force the kernel to write any such 86 * windows to the stack. 87 * 88 * V9 frames have an odd bias, so you can tall a v9 frame from 89 * a v8 frame by testing the stack pointer's lsb. 90 */ 91 #if !defined(_LOCORE) && !defined(_LIBC) 92 struct frame64 { 93 int64_t fr_local[8]; /* space to save locals (%l0..%l7) */ 94 int64_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ 95 u_int64_t fr_fp; /* space to save frame pointer (%i6) */ 96 u_int64_t fr_pc; /* space to save return pc (%i7) */ 97 /* 98 * SVR4 reserves a bunch of extra stuff. 99 */ 100 int64_t fr_argd[6]; /* `register save area' (lunacy) */ 101 int64_t fr_argx[0]; /* arg extension (args 7..n; variable size) */ 102 }; 103 104 #define v9next_frame(f) ((struct frame64*)(f->fr_fp+BIAS)) 105 #endif 106 107 /* 108 * CC64FSZ (C Compiler 64-bit Frame SiZe) is the size of a stack frame used 109 * by the compiler in 64-bit mode. It is (16)*8; space for 8 ins, 8 outs. 110 */ 111 #define CC64FSZ 176 112 113 /* 114 * v9 stacks all have a bias of 2047 added to the %sp and %fp, so you can easily 115 * detect it by testing the register for an odd value. Why 2K-1 I don't know. 116 */ 117 #define BIAS (2048-1) 118 119 #endif /* _MACHINE_FRAME_H_ */ 120