1 /* $NetBSD: frame.h,v 1.11 2022/02/15 20:35:37 palle 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. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)frame.h 8.1 (Berkeley) 6/11/93 41 */ 42 43 #ifndef _SPARC_FRAME_H_ 44 #define _SPARC_FRAME_H_ 45 46 #if defined(_KERNEL_OPT) 47 #include "opt_sparc_arch.h" 48 #endif 49 50 /* 51 * Sparc stack frame format. 52 * 53 * Note that the contents of each stack frame may be held only in 54 * machine register windows. In order to get an accurate picture 55 * of the frame, you must first force the kernel to write any such 56 * windows to the stack. 57 */ 58 #ifndef _LOCORE 59 #ifndef __sparc_v9__ 60 struct frame { 61 int32_t fr_local[8]; /* space to save locals (%l0..%l7) */ 62 int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ 63 struct frame *fr_fp; /* space to save frame pointer (%i6) */ 64 int32_t fr_pc; /* space to save return pc (%i7) */ 65 /* 66 * SunOS reserves another 8 words here; this is pointless 67 * but we do it for compatibility. 68 */ 69 int32_t fr_xxx; /* `structure return pointer' (unused) */ 70 int32_t fr_argd[6]; /* `arg dump area' (lunacy) */ 71 int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */ 72 }; 73 #else 74 struct frame32 { 75 int32_t fr_local[8]; /* space to save locals (%l0..%l7) */ 76 int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ 77 uint32_t fr_fp; /* space to save frame pointer (%i6) */ 78 uint32_t fr_pc; /* space to save return pc (%i7) */ 79 /* 80 * SunOS reserves another 8 words here; this is pointless 81 * but we do it for compatibility. 82 */ 83 int32_t fr_xxx; /* `structure return pointer' (unused) */ 84 int32_t fr_argd[6]; /* `arg dump area' (lunacy) */ 85 int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */ 86 }; 87 #endif 88 #endif 89 90 /* 91 * CCFSZ (C Compiler Frame SiZe) is the size of a stack frame required if 92 * a function is to call C code. It should be just 64, but Sun defined 93 * their frame with space to hold arguments 0 through 5 (plus some junk), 94 * and varargs routines (such as kprintf) demand this, and gcc uses this 95 * area at times anyway. 96 */ 97 #define CCFSZ 96 98 99 /* 100 * Sparc v9 stack frame format. 101 * 102 * Note that the contents of each stack frame may be held only in 103 * machine register windows. In order to get an accurate picture 104 * of the frame, you must first force the kernel to write any such 105 * windows to the stack. 106 * 107 * V9 frames have an odd bias, so you can tell a v9 frame from 108 * a v8 frame by testing the stack pointer's lsb. 109 */ 110 #if !defined(_LOCORE) && !defined(_LIBC) 111 struct frame64 { 112 int64_t fr_local[8]; /* space to save locals (%l0..%l7) */ 113 int64_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ 114 uint64_t fr_fp; /* space to save frame pointer (%i6) */ 115 uint64_t fr_pc; /* space to save return pc (%i7) */ 116 /* 117 * SVR4 reserves a bunch of extra stuff. 118 */ 119 int64_t fr_argd[6]; /* `register save area' (lunacy) */ 120 int64_t fr_argx[0]; /* arg extension (args 7..n; variable size) */ 121 }; 122 123 #define v9next_frame(f) ((struct frame64*)(f->fr_fp+BIAS)) 124 #endif 125 126 /* 127 * CC64FSZ (C Compiler 64-bit Frame SiZe) is the size of a stack frame used 128 * by the compiler in 64-bit mode (see struct frame64 above). 129 * It is 8*8 + 6*8 + 8 + 8 + 6*8 + 0*8 = 176 bytes. 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 #endif /* _SPARC_FRAME_H_ */ 140