1 /* $NetBSD: reloc.h,v 1.3 2001/08/25 15:03:19 mrg 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. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)reloc.h 8.1 (Berkeley) 6/11/93 45 */ 46 47 /* 48 * SPARC relocations. The linker has, unfortunately, a large number 49 * of link types. 50 */ 51 enum reloc_type { 52 /* architecturally-required types */ 53 RELOC_8, /* 8-bit absolute */ 54 RELOC_16, /* 16-bit absolute */ 55 RELOC_32, /* 32-bit absolute */ 56 RELOC_DISP8, /* 8-bit pc-relative */ 57 RELOC_DISP16, /* 16-bit pc-relative */ 58 RELOC_DISP32, /* 32-bit pc-relative */ 59 RELOC_WDISP30, /* 30-bit pc-relative signed word */ 60 RELOC_WDISP22, /* 22-bit pc-relative signed word */ 61 RELOC_HI22, /* 22-bit `%hi' (ie, sethi %hi(X),%l0) */ 62 RELOC_22, /* 22-bit non-%hi (i.e., sethi X,%l0) */ 63 RELOC_13, /* 13-bit absolute */ 64 RELOC_LO10, /* 10-bit `%lo' */ 65 66 /* gnu ld understands some of these, but I do not */ 67 RELOC_SFA_BASE, /* ? */ 68 RELOC_SFA_OFF13, /* ? */ 69 RELOC_BASE10, /* ? */ 70 RELOC_BASE13, /* ? */ 71 RELOC_BASE22, /* ? */ 72 73 /* gnu ld does not use these but Sun linker does */ 74 /* we define them anyway (note that they are included 75 in the freely-available gas sources!) */ 76 /* actually, newer gnu ld does generate some of these. */ 77 RELOC_PC10, /* ? */ 78 RELOC_PC22, /* ? */ 79 RELOC_JMP_TBL, /* ? */ 80 RELOC_SEGOFF16, /* ? */ 81 RELOC_GLOB_DAT, /* ? */ 82 RELOC_JMP_SLOT, /* ? */ 83 RELOC_RELATIVE, /* ? */ 84 RELOC_UA_32, /* unaligned 32bit relocation */ 85 86 /* The following are LP64 relocations */ 87 88 RELOC_PLT32, 89 RELOC_HIPLT22, 90 RELOC_LOPLT10, 91 RELOC_LOPLT10, 92 RELOC_PCPLT22, 93 RELOC_PCPLT32, 94 95 RELOC_10, 96 RELOC_11, 97 RELOC_64, 98 RELOC_OLO10, 99 RELOC_HH22, 100 101 RELOC_HM10, 102 RELOC_LM22, 103 RELOC_PC_HH22, 104 RELOC_PC_HM10, 105 RELOC_PC_LM22, 106 107 RELOC_WDISP16, 108 RELOC_WDISP19, 109 RELOC_GLOB_JMP, 110 RELOC_7, 111 RELOC_5, 112 RELOC_6 113 }; 114 115 /* 116 * SPARC relocation info. 117 * 118 * Symbol-relative relocation is done by: 119 * 1. locating the appropriate symbol 120 * 2. if defined, adding (value + r_addend), subtracting pc if pc-rel, 121 * and then shifting down 2 or 10 or 13 if necessary. 122 * The resulting value is then to be stuffed into the appropriate bits 123 * in the object (the low 22, or the high 30, or ..., etc). 124 */ 125 struct reloc_info_sparc { 126 u_long r_address; /* relocation addr (offset in segment) */ 127 u_int r_index:24, /* segment (r_extern==0) or symbol index */ 128 r_extern:1, /* if set, r_index is symbol index */ 129 :2; /* unused */ 130 enum reloc_type r_type:5; /* relocation type, from above */ 131 long r_addend; /* value to add to symbol value */ 132 }; 133