1 /* $NetBSD: frame.h,v 1.4 2001/12/04 00:05:05 darrenr Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)frame.h 8.1 (Berkeley) 6/11/93 45 */ 46 47 #if defined(_KERNEL_OPT) 48 #include "opt_sparc_arch.h" 49 #endif 50 51 /* 52 * Sparc stack frame format. 53 * 54 * Note that the contents of each stack frame may be held only in 55 * machine register windows. In order to get an accurate picture 56 * of the frame, you must first force the kernel to write any such 57 * windows to the stack. 58 */ 59 #ifndef _LOCORE 60 #ifndef SUN4U 61 struct frame { 62 int32_t fr_local[8]; /* space to save locals (%l0..%l7) */ 63 int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ 64 struct frame *fr_fp; /* space to save frame pointer (%i6) */ 65 int32_t fr_pc; /* space to save return pc (%i7) */ 66 /* 67 * SunOS reserves another 8 words here; this is pointless 68 * but we do it for compatibility. 69 */ 70 int32_t fr_xxx; /* `structure return pointer' (unused) */ 71 int32_t fr_argd[6]; /* `arg dump area' (lunacy) */ 72 int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */ 73 }; 74 #else 75 struct frame32 { 76 int32_t fr_local[8]; /* space to save locals (%l0..%l7) */ 77 int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ 78 u_int32_t fr_fp; /* space to save frame pointer (%i6) */ 79 u_int32_t fr_pc; /* space to save return pc (%i7) */ 80 /* 81 * SunOS reserves another 8 words here; this is pointless 82 * but we do it for compatibility. 83 */ 84 int32_t fr_xxx; /* `structure return pointer' (unused) */ 85 int32_t fr_argd[6]; /* `arg dump area' (lunacy) */ 86 int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */ 87 }; 88 #endif 89 #endif 90 91 /* 92 * CCFSZ (C Compiler Frame SiZe) is the size of a stack frame required if 93 * a function is to call C code. It should be just 64, but Sun defined 94 * their frame with space to hold arguments 0 through 5 (plus some junk), 95 * and varargs routines (such as kprintf) demand this, and gcc uses this 96 * area at times anyway. 97 */ 98 #define CCFSZ 96 99 100 /* 101 * Sparc v9 stack frame format. 102 * 103 * Note that the contents of each stack frame may be held only in 104 * machine register windows. In order to get an accurate picture 105 * of the frame, you must first force the kernel to write any such 106 * windows to the stack. 107 * 108 * V9 frames have an odd bias, so you can tall a v9 frame from 109 * a v8 frame by testing the stack pointer's lsb. 110 */ 111 #if !defined(_LOCORE) && !defined(_LIBC) 112 struct frame64 { 113 int64_t fr_local[8]; /* space to save locals (%l0..%l7) */ 114 int64_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ 115 u_int64_t fr_fp; /* space to save frame pointer (%i6) */ 116 u_int64_t fr_pc; /* space to save return pc (%i7) */ 117 /* 118 * SVR4 reserves a bunch of extra stuff. 119 */ 120 int64_t fr_argd[6]; /* `register save area' (lunacy) */ 121 int64_t fr_argx[0]; /* arg extension (args 7..n; variable size) */ 122 }; 123 124 #define v9next_frame(f) ((struct frame64*)(f->fr_fp+BIAS)) 125 #endif 126 127 /* 128 * CC64FSZ (C Compiler 64-bit Frame SiZe) is the size of a stack frame used 129 * by the compiler in 64-bit mode. It is (16)*8; space for 8 ins, 8 outs. 130 */ 131 #define CC64FSZ 176 132 133 /* 134 * v9 stacks all have a bias of 2047 added to the %sp and %fp, so you can easily 135 * detect it by testing the register for an odd value. Why 2K-1 I don't know. 136 */ 137 #define BIAS (2048-1) 138 139