frame.h revision 1.6 1 1.6 eeh /* $NetBSD: frame.h,v 1.6 1999/10/11 01:57:44 eeh Exp $ */
2 1.1 eeh
3 1.1 eeh /*
4 1.1 eeh * Copyright (c) 1992, 1993
5 1.1 eeh * The Regents of the University of California. All rights reserved.
6 1.1 eeh *
7 1.1 eeh * This software was developed by the Computer Systems Engineering group
8 1.1 eeh * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 1.1 eeh * contributed to Berkeley.
10 1.1 eeh *
11 1.1 eeh * All advertising materials mentioning features or use of this software
12 1.1 eeh * must display the following acknowledgement:
13 1.1 eeh * This product includes software developed by the University of
14 1.1 eeh * California, Lawrence Berkeley Laboratory.
15 1.1 eeh *
16 1.1 eeh * Redistribution and use in source and binary forms, with or without
17 1.1 eeh * modification, are permitted provided that the following conditions
18 1.1 eeh * are met:
19 1.1 eeh * 1. Redistributions of source code must retain the above copyright
20 1.1 eeh * notice, this list of conditions and the following disclaimer.
21 1.1 eeh * 2. Redistributions in binary form must reproduce the above copyright
22 1.1 eeh * notice, this list of conditions and the following disclaimer in the
23 1.1 eeh * documentation and/or other materials provided with the distribution.
24 1.1 eeh * 3. All advertising materials mentioning features or use of this software
25 1.1 eeh * must display the following acknowledgement:
26 1.1 eeh * This product includes software developed by the University of
27 1.1 eeh * California, Berkeley and its contributors.
28 1.1 eeh * 4. Neither the name of the University nor the names of its contributors
29 1.1 eeh * may be used to endorse or promote products derived from this software
30 1.1 eeh * without specific prior written permission.
31 1.1 eeh *
32 1.1 eeh * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
33 1.1 eeh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34 1.1 eeh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 1.1 eeh * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
36 1.1 eeh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 1.1 eeh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 1.1 eeh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 1.1 eeh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
40 1.1 eeh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
41 1.1 eeh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 1.1 eeh * SUCH DAMAGE.
43 1.1 eeh *
44 1.1 eeh * @(#)frame.h 8.1 (Berkeley) 6/11/93
45 1.1 eeh */
46 1.1 eeh
47 1.1 eeh /*
48 1.1 eeh * Sparc stack frame format.
49 1.1 eeh *
50 1.1 eeh * Note that the contents of each stack frame may be held only in
51 1.1 eeh * machine register windows. In order to get an accurate picture
52 1.1 eeh * of the frame, you must first force the kernel to write any such
53 1.1 eeh * windows to the stack.
54 1.1 eeh */
55 1.1 eeh #ifndef _LOCORE
56 1.2 eeh struct frame32 {
57 1.3 eeh int32_t fr_local[8]; /* space to save locals (%l0..%l7) */
58 1.3 eeh int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
59 1.4 eeh u_int32_t fr_fp; /* space to save frame pointer (%i6) */
60 1.4 eeh u_int32_t fr_pc; /* space to save return pc (%i7) */
61 1.1 eeh /*
62 1.1 eeh * SunOS reserves another 8 words here; this is pointless
63 1.1 eeh * but we do it for compatibility.
64 1.1 eeh */
65 1.3 eeh int32_t fr_xxx; /* `structure return pointer' (unused) */
66 1.3 eeh int32_t fr_argd[6]; /* `arg dump area' (lunacy) */
67 1.3 eeh int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */
68 1.1 eeh };
69 1.1 eeh #endif
70 1.1 eeh /*
71 1.1 eeh * CCFSZ (C Compiler Frame SiZe) is the size of a stack frame required if
72 1.1 eeh * a function is to call C code. It should be just 64, but Sun defined
73 1.1 eeh * their frame with space to hold arguments 0 through 5 (plus some junk),
74 1.1 eeh * and varargs routines (such as kprintf) demand this, and gcc uses this
75 1.1 eeh * area at times anyway.
76 1.1 eeh */
77 1.1 eeh #define CCFSZ 96
78 1.1 eeh
79 1.1 eeh
80 1.1 eeh /*
81 1.1 eeh * Sparc v9 stack frame format.
82 1.1 eeh *
83 1.1 eeh * Note that the contents of each stack frame may be held only in
84 1.1 eeh * machine register windows. In order to get an accurate picture
85 1.1 eeh * of the frame, you must first force the kernel to write any such
86 1.1 eeh * windows to the stack.
87 1.1 eeh *
88 1.1 eeh * V9 frames have an odd bias, so you can tall a v9 frame from
89 1.1 eeh * a v8 frame by testing the stack pointer's lsb.
90 1.1 eeh */
91 1.1 eeh #ifndef _LOCORE
92 1.1 eeh struct frame64 {
93 1.1 eeh int64_t fr_local[8]; /* space to save locals (%l0..%l7) */
94 1.1 eeh int64_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
95 1.4 eeh u_int64_t fr_fp; /* space to save frame pointer (%i6) */
96 1.4 eeh u_int64_t fr_pc; /* space to save return pc (%i7) */
97 1.1 eeh /*
98 1.1 eeh * SVR4 reserves a bunch of extra stuff.
99 1.1 eeh */
100 1.5 eeh int64_t fr_argd[6]; /* `register save area' (lunacy) */
101 1.5 eeh int64_t fr_argx[0]; /* arg extension (args 7..n; variable size) */
102 1.1 eeh };
103 1.1 eeh #endif
104 1.1 eeh
105 1.1 eeh #define v9next_frame(f) ((struct frame64*)(f->fr_fp+BIAS))
106 1.1 eeh /*
107 1.1 eeh * CC64FSZ (C Compiler 64-bit Frame SiZe) is the size of a stack frame used
108 1.5 eeh * by the compiler in 64-bit mode. It is (16)*8; space for 8 ins, 8 outs.
109 1.1 eeh */
110 1.1 eeh #define CC64FSZ 176
111 1.1 eeh
112 1.1 eeh /*
113 1.1 eeh * v9 stacks all have a bias of 2047 added to the %sp and %fp, so you can easily
114 1.1 eeh * detect it by testing the register for an odd value. Why 2K-1 I don't know.
115 1.1 eeh */
116 1.1 eeh #define BIAS (2048-1)
117 1.1 eeh
118