Annotation of sys/arch/sparc64/include/frame.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: frame.h,v 1.5 2006/06/21 20:52:18 jason 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 _SPARC64_FRAME_H_
45: #define _SPARC64_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 /* _SPARC64_FRAME_H_ */
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