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 */ 47 enum 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 */ 121 struct 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 }; 129