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};