1/* $NetBSD: reloc.h,v 1.7 2005/12/11 12:19:06 christos 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 * @(#)reloc.h 8.1 (Berkeley) 6/11/93
41 */
42
43/*
44 * SPARC relocations. The linker has, unfortunately, a large number
45 * of link types.
46 */
47enum reloc_type {
48 /* architecturally-required types */
49 RELOC_8, /* 8-bit absolute */
50 RELOC_16, /* 16-bit absolute */
51 RELOC_32, /* 32-bit absolute */
52 RELOC_DISP8, /* 8-bit pc-relative */
53 RELOC_DISP16, /* 16-bit pc-relative */
54 RELOC_DISP32, /* 32-bit pc-relative */
55 RELOC_WDISP30, /* 30-bit pc-relative signed word */
56 RELOC_WDISP22, /* 22-bit pc-relative signed word */
57 RELOC_HI22, /* 22-bit `%hi' (ie, sethi %hi(X),%l0) */
58 RELOC_22, /* 22-bit non-%hi (i.e., sethi X,%l0) */
59 RELOC_13, /* 13-bit absolute */
60 RELOC_LO10, /* 10-bit `%lo' */
61
62 /* gnu ld understands some of these, but I do not */
63 RELOC_SFA_BASE, /* ? */
64 RELOC_SFA_OFF13, /* ? */
65 RELOC_BASE10, /* ? */
66 RELOC_BASE13, /* ? */
67 RELOC_BASE22, /* ? */
68
69 /* gnu ld does not use these but Sun linker does */
70 /* we define them anyway (note that they are included
71 in the freely-available gas sources!) */
72 /* actually, newer gnu ld does generate some of these. */
73 RELOC_PC10, /* ? */
74 RELOC_PC22, /* ? */
75 RELOC_JMP_TBL, /* ? */
76 RELOC_SEGOFF16, /* ? */
77 RELOC_GLOB_DAT, /* ? */
78 RELOC_JMP_SLOT, /* ? */
79 RELOC_RELATIVE, /* ? */
80 RELOC_UA_32, /* unaligned 32bit relocation */
81
82 /* The following are LP64 relocations */
83
84 RELOC_PLT32,
85 RELOC_HIPLT22,
86 RELOC_LOPLT10,
87 RELOC_PCPLT32,
88 RELOC_PCPLT22,
89 RELOC_PCPLT10,
90
91 RELOC_10,
92 RELOC_11,
93 RELOC_64,
94 RELOC_OLO10,
95 RELOC_HH22,
96
97 RELOC_HM10,
98 RELOC_LM22,
99 RELOC_PC_HH22,
100 RELOC_PC_HM10,
101 RELOC_PC_LM22,
102
103 RELOC_WDISP16,
104 RELOC_WDISP19,
105 RELOC_GLOB_JMP,
106 RELOC_7,
107 RELOC_5,
108 RELOC_6
109};
110
111/*
112 * SPARC relocation info.
113 *
114 * Symbol-relative relocation is done by:
115 * 1. locating the appropriate symbol
116 * 2. if defined, adding (value + r_addend), subtracting pc if pc-rel,
117 * and then shifting down 2 or 10 or 13 if necessary.
118 * The resulting value is then to be stuffed into the appropriate bits
119 * in the object (the low 22, or the high 30, or ..., etc).
120 */
121struct reloc_info_sparc {
122 u_long r_address; /* relocation addr (offset in segment) */
123 u_int r_index:24, /* segment (r_extern==0) or symbol index */
124 r_extern:1, /* if set, r_index is symbol index */
125 :2; /* unused */
126 enum reloc_type r_type:5; /* relocation type, from above */
127 long r_addend; /* value to add to symbol value */
128};