1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 27*7c478bd9Sstevel@tonic-gate 28*7c478bd9Sstevel@tonic-gate #if defined(_KERNEL) 29*7c478bd9Sstevel@tonic-gate #include <sys/types.h> 30*7c478bd9Sstevel@tonic-gate #include "reloc.h" 31*7c478bd9Sstevel@tonic-gate #else 32*7c478bd9Sstevel@tonic-gate #include <stdio.h> 33*7c478bd9Sstevel@tonic-gate #include "sgs.h" 34*7c478bd9Sstevel@tonic-gate #include "machdep.h" 35*7c478bd9Sstevel@tonic-gate #include "libld.h" 36*7c478bd9Sstevel@tonic-gate #include "reloc.h" 37*7c478bd9Sstevel@tonic-gate #include "conv.h" 38*7c478bd9Sstevel@tonic-gate #include "msg.h" 39*7c478bd9Sstevel@tonic-gate #endif 40*7c478bd9Sstevel@tonic-gate 41*7c478bd9Sstevel@tonic-gate /* 42*7c478bd9Sstevel@tonic-gate * This table represents the current relocations that do_reloc() 43*7c478bd9Sstevel@tonic-gate * is able to process. The relocations below that are marked 44*7c478bd9Sstevel@tonic-gate * 'SPECIAL' in the comments are relocations that take special 45*7c478bd9Sstevel@tonic-gate * processing and shouldn't actually ever be passed to do_reloc(). 46*7c478bd9Sstevel@tonic-gate */ 47*7c478bd9Sstevel@tonic-gate const Rel_entry reloc_table[R_386_NUM] = { 48*7c478bd9Sstevel@tonic-gate /* R_386_NONE */ {0, 0}, 49*7c478bd9Sstevel@tonic-gate /* R_386_32 */ {FLG_RE_NOTREL, 4}, 50*7c478bd9Sstevel@tonic-gate /* R_386_PC32 */ {FLG_RE_PCREL, 4}, 51*7c478bd9Sstevel@tonic-gate /* R_386_GOT32 */ {FLG_RE_GOTADD, 4}, 52*7c478bd9Sstevel@tonic-gate /* R_386_PLT32 */ {FLG_RE_PLTREL | FLG_RE_PCREL, 4}, 53*7c478bd9Sstevel@tonic-gate /* R_386_COPY */ {0, 0}, /* SPECIAL */ 54*7c478bd9Sstevel@tonic-gate /* R_386_GLOB_DAT */ {FLG_RE_NOTREL, 4}, 55*7c478bd9Sstevel@tonic-gate /* R_386_JMP_SLOT */ {FLG_RE_NOTREL, 4}, 56*7c478bd9Sstevel@tonic-gate /* R_386_RELATIVE */ {FLG_RE_NOTREL, 4}, 57*7c478bd9Sstevel@tonic-gate /* R_386_GOTOFF */ {FLG_RE_GOTREL, 4}, 58*7c478bd9Sstevel@tonic-gate /* R_386_GOTPC */ {FLG_RE_PCREL | FLG_RE_GOTPC | FLG_RE_LOCLBND, 4}, 59*7c478bd9Sstevel@tonic-gate /* R_386_32PLT */ {FLG_RE_PLTREL, 4}, 60*7c478bd9Sstevel@tonic-gate /* R_386_TLS_GD_PLT */ {FLG_RE_TLSINS | FLG_RE_PLTREL | 61*7c478bd9Sstevel@tonic-gate FLG_RE_PCREL | FLG_RE_TLSGD, 4}, 62*7c478bd9Sstevel@tonic-gate /* R_386_TLS_LDM_PLT */ {FLG_RE_TLSINS | FLG_RE_PLTREL | 63*7c478bd9Sstevel@tonic-gate FLG_RE_PCREL | FLG_RE_TLSLD, 4}, 64*7c478bd9Sstevel@tonic-gate /* R_386_TLS_TPOFF */ {FLG_RE_NOTREL, 4}, 65*7c478bd9Sstevel@tonic-gate /* R_386_TLS_IE */ {FLG_RE_GOTADD | FLG_RE_TLSINS | FLG_RE_TLSIE, 4}, 66*7c478bd9Sstevel@tonic-gate /* R_386_TLS_GOTIE */ {FLG_RE_GOTADD | FLG_RE_TLSINS | FLG_RE_TLSIE, 4}, 67*7c478bd9Sstevel@tonic-gate /* R_386_TLS_LE */ {FLG_RE_TLSINS | FLG_RE_NOTREL | FLG_RE_TLSLE, 4}, 68*7c478bd9Sstevel@tonic-gate /* R_386_TLS_GD */ {FLG_RE_GOTADD | FLG_RE_TLSINS | FLG_RE_TLSGD, 4}, 69*7c478bd9Sstevel@tonic-gate /* R_386_TLS_LDM */ {FLG_RE_GOTADD | FLG_RE_TLSLD | FLG_RE_TLSINS, 4}, 70*7c478bd9Sstevel@tonic-gate /* R_386_16 */ {FLG_RE_NOTSUP, 0}, 71*7c478bd9Sstevel@tonic-gate /* R_386_PC16 */ {FLG_RE_NOTSUP, 0}, 72*7c478bd9Sstevel@tonic-gate /* R_386_8 */ {FLG_RE_NOTSUP, 0}, 73*7c478bd9Sstevel@tonic-gate /* R_386_PC8 */ {FLG_RE_NOTSUP, 0}, 74*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN24 */ {FLG_RE_NOTSUP, 0}, 75*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN25 */ {FLG_RE_NOTSUP, 0}, 76*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN26 */ {FLG_RE_NOTSUP, 0}, 77*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN27 */ {FLG_RE_NOTSUP, 0}, 78*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN28 */ {FLG_RE_NOTSUP, 0}, 79*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN29 */ {FLG_RE_NOTSUP, 0}, 80*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN30 */ {FLG_RE_NOTSUP, 0}, 81*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN31 */ {FLG_RE_NOTSUP, 0}, 82*7c478bd9Sstevel@tonic-gate /* R_386_TLS_LDO_32 */ {FLG_RE_TLSINS | FLG_RE_TLSLD | FLG_RE_NOTREL, 4}, 83*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN33 */ {FLG_RE_NOTSUP, 0}, 84*7c478bd9Sstevel@tonic-gate /* R_386_UNKNOWN34 */ {FLG_RE_NOTSUP, 0}, 85*7c478bd9Sstevel@tonic-gate /* R_386_TLS_DTPMOD32 */ {FLG_RE_NOTREL, 4}, 86*7c478bd9Sstevel@tonic-gate /* R_386_TLS_DTPOFF32 */ {FLG_RE_NOTREL, 4}, 87*7c478bd9Sstevel@tonic-gate /* R_386_UNKONWN37 */ {FLG_RE_NOTSUP, 0} 88*7c478bd9Sstevel@tonic-gate }; 89*7c478bd9Sstevel@tonic-gate 90*7c478bd9Sstevel@tonic-gate 91*7c478bd9Sstevel@tonic-gate /* 92*7c478bd9Sstevel@tonic-gate * Write a single relocated value to its reference location. 93*7c478bd9Sstevel@tonic-gate * We assume we wish to add the relocatoin amount, value, to the 94*7c478bd9Sstevel@tonic-gate * value of the address already present at the offset. 95*7c478bd9Sstevel@tonic-gate * 96*7c478bd9Sstevel@tonic-gate * NAME VALUE FIELD CALCULATION 97*7c478bd9Sstevel@tonic-gate * 98*7c478bd9Sstevel@tonic-gate * R_386_NONE 0 none none 99*7c478bd9Sstevel@tonic-gate * R_386_32 1 word32 S + A 100*7c478bd9Sstevel@tonic-gate * R_386_PC32 2 word32 S + A - P 101*7c478bd9Sstevel@tonic-gate * R_386_GOT32 3 word32 G + A - P 102*7c478bd9Sstevel@tonic-gate * R_386_PLT32 4 word32 L + A - P 103*7c478bd9Sstevel@tonic-gate * R_386_COPY 5 none none 104*7c478bd9Sstevel@tonic-gate * R_386_GLOB_DAT 6 word32 S 105*7c478bd9Sstevel@tonic-gate * R_386_JMP_SLOT 7 word32 S 106*7c478bd9Sstevel@tonic-gate * R_386_RELATIVE 8 word32 B + A 107*7c478bd9Sstevel@tonic-gate * R_386_GOTOFF 9 word32 S + A - GOT 108*7c478bd9Sstevel@tonic-gate * R_386_GOTPC 10 word32 GOT + A - P 109*7c478bd9Sstevel@tonic-gate * R_386_32PLT 11 word32 L + A 110*7c478bd9Sstevel@tonic-gate * R_386_TLS_GD_PLT 12 word32 @tlsgdplt 111*7c478bd9Sstevel@tonic-gate * R_386_TLS_LDM_PLT 13 word32 @tlsldmplt 112*7c478bd9Sstevel@tonic-gate * R_386_TLS_TPOFF 14 word32 @ntpoff(S) 113*7c478bd9Sstevel@tonic-gate * R_386_TLS_IE 15 word32 @indntpoff(S) 114*7c478bd9Sstevel@tonic-gate * R_386_TLS_GD 18 word32 @tlsgd(S) 115*7c478bd9Sstevel@tonic-gate * R_386_TLS_LDM 19 word32 @tlsldm(S) 116*7c478bd9Sstevel@tonic-gate * R_386_TLS_LDO_32 32 word32 @dtpoff(S) 117*7c478bd9Sstevel@tonic-gate * R_386_TLS_DTPMOD32 35 word32 @dtpmod(S) 118*7c478bd9Sstevel@tonic-gate * R_386_TLS_DTPOFF32 36 word32 @dtpoff(S) 119*7c478bd9Sstevel@tonic-gate * 120*7c478bd9Sstevel@tonic-gate * Relocatoins 0-10 are from Figure 4-4: Relocations Types from the 121*7c478bd9Sstevel@tonic-gate * intel ABI. Relocation 11 (R_386_32PLT) is from the C++ intel abi 122*7c478bd9Sstevel@tonic-gate * and is in the process of being registered with intel ABI (1/13/94). 123*7c478bd9Sstevel@tonic-gate * 124*7c478bd9Sstevel@tonic-gate * Relocations R_386_TLS_* are added to support Thread-Local storage 125*7c478bd9Sstevel@tonic-gate * as recorded in PSARC/2001/509 126*7c478bd9Sstevel@tonic-gate * 127*7c478bd9Sstevel@tonic-gate * Relocation calculations: 128*7c478bd9Sstevel@tonic-gate * 129*7c478bd9Sstevel@tonic-gate * CALCULATION uses the following notation: 130*7c478bd9Sstevel@tonic-gate * A the addend used 131*7c478bd9Sstevel@tonic-gate * B the base address of the shared object in memory 132*7c478bd9Sstevel@tonic-gate * G the offset into the global offset table 133*7c478bd9Sstevel@tonic-gate * GOT the address of teh global offset table 134*7c478bd9Sstevel@tonic-gate * L the procedure linkage entry 135*7c478bd9Sstevel@tonic-gate * P the place of the storage unit being relocated 136*7c478bd9Sstevel@tonic-gate * S the value of the symbol 137*7c478bd9Sstevel@tonic-gate * 138*7c478bd9Sstevel@tonic-gate * @dtlndx(x): Allocate two contiguous entries in the GOT table to hold 139*7c478bd9Sstevel@tonic-gate * a Tls_index structure (for passing to __tls_get_addr()). The 140*7c478bd9Sstevel@tonic-gate * instructions referencing this entry will be bound to the first 141*7c478bd9Sstevel@tonic-gate * of the two GOT entries. 142*7c478bd9Sstevel@tonic-gate * 143*7c478bd9Sstevel@tonic-gate * @tmndx(x): Allocate two contiguous entries in the GOT table to hold 144*7c478bd9Sstevel@tonic-gate * a Tls_index structure (for passing to __tls_get_addr()). The 145*7c478bd9Sstevel@tonic-gate * ti_offset field of the Tls_index will be set to 0 (zero) and the 146*7c478bd9Sstevel@tonic-gate * ti_module will be filled in at run-time. The call to 147*7c478bd9Sstevel@tonic-gate * __tls_get_addr() will return the starting offset of the dynamic 148*7c478bd9Sstevel@tonic-gate * TLS block. 149*7c478bd9Sstevel@tonic-gate * 150*7c478bd9Sstevel@tonic-gate * @dtpoff(x): calculate the tlsoffset relative to the TLS block. 151*7c478bd9Sstevel@tonic-gate * 152*7c478bd9Sstevel@tonic-gate * @tpoff(x): calculate the tlsoffset relative to the TLS block. 153*7c478bd9Sstevel@tonic-gate * 154*7c478bd9Sstevel@tonic-gate * @dtpmod(x): calculate the module id of the object containing symbol x. 155*7c478bd9Sstevel@tonic-gate * 156*7c478bd9Sstevel@tonic-gate * The calculations in the CALCULATION column are assumed to have 157*7c478bd9Sstevel@tonic-gate * been performed before calling this function except for the addition of 158*7c478bd9Sstevel@tonic-gate * the addresses in the instructions. 159*7c478bd9Sstevel@tonic-gate */ 160*7c478bd9Sstevel@tonic-gate int 161*7c478bd9Sstevel@tonic-gate do_reloc(unsigned char rtype, unsigned char *off, Xword *value, 162*7c478bd9Sstevel@tonic-gate const char *sym, const char *file) 163*7c478bd9Sstevel@tonic-gate { 164*7c478bd9Sstevel@tonic-gate const Rel_entry *rep; 165*7c478bd9Sstevel@tonic-gate 166*7c478bd9Sstevel@tonic-gate rep = &reloc_table[rtype]; 167*7c478bd9Sstevel@tonic-gate /* 168*7c478bd9Sstevel@tonic-gate * Currenty 386 *only* relocates against full words 169*7c478bd9Sstevel@tonic-gate */ 170*7c478bd9Sstevel@tonic-gate if (rep->re_fsize != 4) { 171*7c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_REL_UNSUPSZ), 172*7c478bd9Sstevel@tonic-gate conv_reloc_386_type_str(rtype), file, 173*7c478bd9Sstevel@tonic-gate (sym ? sym : MSG_INTL(MSG_STR_UNKNOWN)), 174*7c478bd9Sstevel@tonic-gate EC_WORD(rep->re_fsize)); 175*7c478bd9Sstevel@tonic-gate return (0); 176*7c478bd9Sstevel@tonic-gate } 177*7c478bd9Sstevel@tonic-gate /* LINTED */ 178*7c478bd9Sstevel@tonic-gate *((Xword *)off) += *value; 179*7c478bd9Sstevel@tonic-gate return (1); 180*7c478bd9Sstevel@tonic-gate } 181