1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * All advertising materials mentioning features or use of this software 10 * must display the following acknowledgement: 11 * This product includes software developed by the University of 12 * California, Lawrence Berkeley Laboratory. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * @(#)reloc.h 8.1 (Berkeley) 6/11/93 43 * 44 * from: Header: reloc.h,v 1.7 92/11/26 02:04:45 torek Exp 45 * $Id: reloc.h,v 1.1 1993/10/02 10:23:26 deraadt Exp $ 46 */ 47 48 /* 49 * SPARC relocations. The linker has, unfortunately, a large number 50 * of link types. We do not do dynamic linking (yet?) but we define 51 * the dynamic link types. 52 */ 53 enum reloc_type { 54 /* architecturally-required types */ 55 RELOC_8, /* 8-bit absolute */ 56 RELOC_16, /* 16-bit absolute */ 57 RELOC_32, /* 32-bit absolute */ 58 RELOC_DISP8, /* 8-bit pc-relative */ 59 RELOC_DISP16, /* 16-bit pc-relative */ 60 RELOC_DISP32, /* 32-bit pc-relative */ 61 RELOC_WDISP30, /* 30-bit pc-relative signed word */ 62 RELOC_WDISP22, /* 22-bit pc-relative signed word */ 63 RELOC_HI22, /* 22-bit `%hi' (ie, sethi %hi(X),%l0) */ 64 RELOC_22, /* 22-bit non-%hi (i.e., sethi X,%l0) */ 65 RELOC_13, /* 13-bit absolute */ 66 RELOC_LO10, /* 10-bit `%lo' */ 67 68 /* gnu ld understands some of these, but I do not */ 69 RELOC_SFA_BASE, /* ? */ 70 RELOC_SFA_OFF13, /* ? */ 71 RELOC_BASE10, /* ? */ 72 RELOC_BASE13, /* ? */ 73 RELOC_BASE22, /* ? */ 74 75 /* gnu ld does not use these but Sun linker does */ 76 /* we define them anyway (note that they are included 77 in the freely-available gas sources!) */ 78 RELOC_PC10, /* ? */ 79 RELOC_PC22, /* ? */ 80 RELOC_JMP_TBL, /* ? */ 81 RELOC_SEGOFF16, /* ? */ 82 RELOC_GLOB_DAT, /* ? */ 83 RELOC_JMP_SLOT, /* ? */ 84 RELOC_RELATIVE, /* ? */ 85 }; 86 87 /* 88 * SPARC relocation info. 89 * 90 * Symbol-relative relocation is done by: 91 * 1. locating the appropriate symbol 92 * 2. if defined, adding (value + r_addend), subtracting pc if pc-rel, 93 * and then shifting down 2 or 10 or 13 if necessary. 94 * The resulting value is then to be stuffed into the appropriate bits 95 * in the object (the low 22, or the high 30, or ..., etc). 96 */ 97 struct reloc_info_sparc { 98 u_long r_address; /* relocation addr (offset in segment) */ 99 u_int r_index:24, /* segment (r_extern==0) or symbol index */ 100 r_extern:1, /* if set, r_index is symbol index */ 101 :2; /* unused */ 102 enum reloc_type r_type:5; /* relocation type, from above */ 103 long r_addend; /* value to add to symbol value */ 104 }; 105