frame.h revision 1.4 1 1.4 darrenr /* $NetBSD: frame.h,v 1.4 2001/12/04 00:05:05 darrenr Exp $ */
2 1.2 deraadt
3 1.1 deraadt /*
4 1.1 deraadt * Copyright (c) 1992, 1993
5 1.1 deraadt * The Regents of the University of California. All rights reserved.
6 1.1 deraadt *
7 1.1 deraadt * This software was developed by the Computer Systems Engineering group
8 1.1 deraadt * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 1.1 deraadt * contributed to Berkeley.
10 1.1 deraadt *
11 1.1 deraadt * All advertising materials mentioning features or use of this software
12 1.1 deraadt * must display the following acknowledgement:
13 1.1 deraadt * This product includes software developed by the University of
14 1.1 deraadt * California, Lawrence Berkeley Laboratory.
15 1.1 deraadt *
16 1.1 deraadt * Redistribution and use in source and binary forms, with or without
17 1.1 deraadt * modification, are permitted provided that the following conditions
18 1.1 deraadt * are met:
19 1.1 deraadt * 1. Redistributions of source code must retain the above copyright
20 1.1 deraadt * notice, this list of conditions and the following disclaimer.
21 1.1 deraadt * 2. Redistributions in binary form must reproduce the above copyright
22 1.1 deraadt * notice, this list of conditions and the following disclaimer in the
23 1.1 deraadt * documentation and/or other materials provided with the distribution.
24 1.1 deraadt * 3. All advertising materials mentioning features or use of this software
25 1.1 deraadt * must display the following acknowledgement:
26 1.1 deraadt * This product includes software developed by the University of
27 1.1 deraadt * California, Berkeley and its contributors.
28 1.1 deraadt * 4. Neither the name of the University nor the names of its contributors
29 1.1 deraadt * may be used to endorse or promote products derived from this software
30 1.1 deraadt * without specific prior written permission.
31 1.1 deraadt *
32 1.1 deraadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
33 1.1 deraadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34 1.1 deraadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 1.1 deraadt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
36 1.1 deraadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 1.1 deraadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 1.1 deraadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 1.1 deraadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
40 1.1 deraadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
41 1.1 deraadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 1.1 deraadt * SUCH DAMAGE.
43 1.1 deraadt *
44 1.1 deraadt * @(#)frame.h 8.1 (Berkeley) 6/11/93
45 1.1 deraadt */
46 1.4 darrenr
47 1.4 darrenr #if defined(_KERNEL_OPT)
48 1.4 darrenr #include "opt_sparc_arch.h"
49 1.4 darrenr #endif
50 1.1 deraadt
51 1.1 deraadt /*
52 1.1 deraadt * Sparc stack frame format.
53 1.1 deraadt *
54 1.1 deraadt * Note that the contents of each stack frame may be held only in
55 1.1 deraadt * machine register windows. In order to get an accurate picture
56 1.1 deraadt * of the frame, you must first force the kernel to write any such
57 1.1 deraadt * windows to the stack.
58 1.1 deraadt */
59 1.3 mrg #ifndef _LOCORE
60 1.3 mrg #ifndef SUN4U
61 1.1 deraadt struct frame {
62 1.3 mrg int32_t fr_local[8]; /* space to save locals (%l0..%l7) */
63 1.3 mrg int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
64 1.1 deraadt struct frame *fr_fp; /* space to save frame pointer (%i6) */
65 1.3 mrg int32_t fr_pc; /* space to save return pc (%i7) */
66 1.1 deraadt /*
67 1.1 deraadt * SunOS reserves another 8 words here; this is pointless
68 1.1 deraadt * but we do it for compatibility.
69 1.1 deraadt */
70 1.3 mrg int32_t fr_xxx; /* `structure return pointer' (unused) */
71 1.3 mrg int32_t fr_argd[6]; /* `arg dump area' (lunacy) */
72 1.3 mrg int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */
73 1.1 deraadt };
74 1.3 mrg #else
75 1.3 mrg struct frame32 {
76 1.3 mrg int32_t fr_local[8]; /* space to save locals (%l0..%l7) */
77 1.3 mrg int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
78 1.3 mrg u_int32_t fr_fp; /* space to save frame pointer (%i6) */
79 1.3 mrg u_int32_t fr_pc; /* space to save return pc (%i7) */
80 1.3 mrg /*
81 1.3 mrg * SunOS reserves another 8 words here; this is pointless
82 1.3 mrg * but we do it for compatibility.
83 1.3 mrg */
84 1.3 mrg int32_t fr_xxx; /* `structure return pointer' (unused) */
85 1.3 mrg int32_t fr_argd[6]; /* `arg dump area' (lunacy) */
86 1.3 mrg int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */
87 1.3 mrg };
88 1.3 mrg #endif
89 1.3 mrg #endif
90 1.3 mrg
91 1.3 mrg /*
92 1.3 mrg * CCFSZ (C Compiler Frame SiZe) is the size of a stack frame required if
93 1.3 mrg * a function is to call C code. It should be just 64, but Sun defined
94 1.3 mrg * their frame with space to hold arguments 0 through 5 (plus some junk),
95 1.3 mrg * and varargs routines (such as kprintf) demand this, and gcc uses this
96 1.3 mrg * area at times anyway.
97 1.3 mrg */
98 1.3 mrg #define CCFSZ 96
99 1.3 mrg
100 1.3 mrg /*
101 1.3 mrg * Sparc v9 stack frame format.
102 1.3 mrg *
103 1.3 mrg * Note that the contents of each stack frame may be held only in
104 1.3 mrg * machine register windows. In order to get an accurate picture
105 1.3 mrg * of the frame, you must first force the kernel to write any such
106 1.3 mrg * windows to the stack.
107 1.3 mrg *
108 1.3 mrg * V9 frames have an odd bias, so you can tall a v9 frame from
109 1.3 mrg * a v8 frame by testing the stack pointer's lsb.
110 1.3 mrg */
111 1.3 mrg #if !defined(_LOCORE) && !defined(_LIBC)
112 1.3 mrg struct frame64 {
113 1.3 mrg int64_t fr_local[8]; /* space to save locals (%l0..%l7) */
114 1.3 mrg int64_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
115 1.3 mrg u_int64_t fr_fp; /* space to save frame pointer (%i6) */
116 1.3 mrg u_int64_t fr_pc; /* space to save return pc (%i7) */
117 1.3 mrg /*
118 1.3 mrg * SVR4 reserves a bunch of extra stuff.
119 1.3 mrg */
120 1.3 mrg int64_t fr_argd[6]; /* `register save area' (lunacy) */
121 1.3 mrg int64_t fr_argx[0]; /* arg extension (args 7..n; variable size) */
122 1.3 mrg };
123 1.3 mrg
124 1.3 mrg #define v9next_frame(f) ((struct frame64*)(f->fr_fp+BIAS))
125 1.3 mrg #endif
126 1.3 mrg
127 1.3 mrg /*
128 1.3 mrg * CC64FSZ (C Compiler 64-bit Frame SiZe) is the size of a stack frame used
129 1.3 mrg * by the compiler in 64-bit mode. It is (16)*8; space for 8 ins, 8 outs.
130 1.3 mrg */
131 1.3 mrg #define CC64FSZ 176
132 1.3 mrg
133 1.3 mrg /*
134 1.3 mrg * v9 stacks all have a bias of 2047 added to the %sp and %fp, so you can easily
135 1.3 mrg * detect it by testing the register for an odd value. Why 2K-1 I don't know.
136 1.3 mrg */
137 1.3 mrg #define BIAS (2048-1)
138 1.3 mrg
139