1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 #if defined(_KERNEL) 31 #include <sys/types.h> 32 #include "reloc.h" 33 #else 34 #include <stdio.h> 35 #include "sgs.h" 36 #include "machdep.h" 37 #include "libld.h" 38 #include "reloc.h" 39 #include "conv.h" 40 #include "msg.h" 41 #endif 42 43 /* 44 * This table represents the current relocations that do_reloc() is able to 45 * process. The relocations below that are marked SPECIAL are relocations that 46 * take special processing and shouldn't actually ever be passed to do_reloc(). 47 */ 48 const Rel_entry reloc_table[R_SPARC_NUM] = { 49 /* R_SPARC_NONE */ {0x0, FLG_RE_NOTREL, 0, 0, 0}, 50 /* R_SPARC_8 */ {0x0, FLG_RE_VERIFY, 1, 0, 0}, 51 /* R_SPARC_16 */ {0x0, FLG_RE_VERIFY, 2, 0, 0}, 52 /* R_SPARC_32 */ {0x0, FLG_RE_VERIFY, 4, 0, 0}, 53 /* R_SPARC_DISP8 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 54 1, 0, 0}, 55 /* R_SPARC_DISP16 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 56 2, 0, 0}, 57 /* R_SPARC_DISP32 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 58 4, 0, 0}, 59 /* R_SPARC_WDISP30 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 60 4, 2, 30}, 61 /* R_SPARC_WDISP22 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 62 4, 2, 22}, 63 #if defined(_ELF64) 64 /* R_SPARC_HI22 */ {0x0, FLG_RE_VERIFY, 4, 10, 22}, 65 #else 66 /* R_SPARC_HI22 */ {0x0, FLG_RE_NOTREL, 4, 10, 22}, 67 #endif 68 /* R_SPARC_22 */ {0x0, FLG_RE_VERIFY, 4, 0, 22}, 69 /* R_SPARC_13 */ {0x0, FLG_RE_VERIFY | FLG_RE_SIGN, 4, 0, 13}, 70 /* R_SPARC_LO10 */ {0x3ff, FLG_RE_SIGN, 4, 0, 13}, 71 /* R_SPARC_GOT10 */ {0x3ff, FLG_RE_GOTADD | FLG_RE_SIGN, 4, 0, 13}, 72 /* R_SPARC_GOT13 */ {0x0, FLG_RE_GOTADD | FLG_RE_VERIFY | FLG_RE_SIGN, 73 4, 0, 13}, 74 /* R_SPARC_GOT22 */ {0x0, FLG_RE_GOTADD, 4, 10, 22}, 75 /* R_SPARC_PC10 */ {0x3ff, FLG_RE_PCREL | FLG_RE_GOTPC | FLG_RE_SIGN | 76 FLG_RE_LOCLBND, 4, 0, 13}, 77 /* R_SPARC_PC22 */ {0x0, FLG_RE_PCREL | FLG_RE_GOTPC | FLG_RE_SIGN | 78 FLG_RE_VERIFY | FLG_RE_LOCLBND, 79 4, 10, 22}, 80 /* R_SPARC_WPLT30 */ {0x0, FLG_RE_PCREL | FLG_RE_PLTREL | 81 FLG_RE_VERIFY | FLG_RE_SIGN, 82 4, 2, 30}, 83 /* R_SPARC_COPY */ {0x0, 0, 0, 0, 0}, /* SPECIAL */ 84 #if defined(_ELF64) 85 /* R_SPARC_GLOB_DAT */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 86 #else 87 /* R_SPARC_GLOB_DAT */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 88 #endif 89 /* R_SPARC_JMP_SLOT */ {0x0, 0, 0, 0, 0}, /* SPECIAL */ 90 #if defined(_ELF64) 91 /* R_SPARC_RELATIVE */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 92 #else 93 /* R_SPARC_RELATIVE */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 94 #endif 95 /* R_SPARC_UA32 */ {0x0, FLG_RE_UNALIGN, 4, 0, 0}, 96 /* R_SPARC_PLT32 */ {0x0, FLG_RE_PLTREL | FLG_RE_VERIFY | 97 FLG_RE_ADDRELATIVE, 4, 0, 0}, 98 /* R_SPARC_HIPLT22 */ {0x0, FLG_RE_PLTREL, 4, 10, 22}, 99 /* R_SPARC_LOPLT10 */ {0x3ff, FLG_RE_PLTREL, 4, 0, 13}, 100 /* R_SPARC_PCPLT32 */ {0x0, FLG_RE_PLTREL | FLG_RE_PCREL | FLG_RE_VERIFY, 101 4, 0, 0}, 102 /* R_SPARC_PCPLT22 */ {0x0, FLG_RE_PLTREL | FLG_RE_PCREL | FLG_RE_VERIFY, 103 4, 10, 22}, 104 /* R_SPARC_PCPLT10 */ {0x3ff, FLG_RE_PLTREL | FLG_RE_PCREL | FLG_RE_VERIFY, 105 4, 0, 13}, 106 /* R_SPARC_10 */ {0x0, FLG_RE_VERIFY | FLG_RE_SIGN, 4, 0, 10}, 107 /* R_SPARC_11 */ {0x0, FLG_RE_VERIFY | FLG_RE_SIGN, 4, 0, 11}, 108 /* R_SPARC_64 */ {0x0, FLG_RE_VERIFY, 8, 0, 0}, /* V9 */ 109 /* R_SPARC_OLO10 */ {0x3ff, FLG_RE_EXTOFFSET | FLG_RE_SIGN, 110 4, 0, 13}, /* V9 */ 111 /* R_SPARC_HH22 */ {0x0, FLG_RE_VERIFY, 4, 42, 22}, /* V9 */ 112 /* R_SPARC_HM10 */ {0x3ff, FLG_RE_SIGN, 4, 32, 13}, /* V9 */ 113 /* R_SPARC_LM22 */ {0x0, FLG_RE_NOTREL, 4, 10, 22}, /* V9 */ 114 /* R_SPARC_PC_HH22 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_GOTPC, 115 4, 42, 22}, /* V9 */ 116 /* R_SPARC_PC_HM10 */ {0x3ff, FLG_RE_PCREL | FLG_RE_SIGN | FLG_RE_GOTPC, 117 4, 32, 13}, /* V9 */ 118 /* R_SPARC_PC_LM22 */ {0x0, FLG_RE_PCREL | FLG_RE_GOTPC, 119 4, 10, 22}, /* V9 */ 120 /* R_SPARC_WDISP16 */ {0x0, FLG_RE_PCREL | FLG_RE_WDISP16 | 121 FLG_RE_VERIFY | FLG_RE_SIGN, 122 4, 2, 16}, 123 /* R_SPARC_WDISP19 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 124 4, 2, 19}, 125 /* R_SPARC_GLOB_JMP */ {0x0, 0, 0, 0, 0}, /* V9 - not implemented */ 126 /* removed from v9 ABI */ 127 /* R_SPARC_7 */ {0x0, FLG_RE_NOTREL, 4, 0, 7}, 128 /* R_SPARC_5 */ {0x0, FLG_RE_NOTREL, 4, 0, 5}, 129 /* R_SPARC_6 */ {0x0, FLG_RE_NOTREL, 4, 0, 6}, 130 /* R_SPARC_DISP64 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 131 8, 0, 0}, 132 /* R_SPARC_PLT64 */ {0x0, FLG_RE_PLTREL | FLG_RE_VERIFY | 133 FLG_RE_ADDRELATIVE, 8, 0, 0}, 134 /* R_SPARC_HIX22 */ {(Xword)(-1LL), FLG_RE_NOTREL | FLG_RE_VERIFY, 135 4, 10, 22}, /* V9 - HaL */ 136 /* R_SPARC_LOX10 */ {0x3ff, FLG_RE_SIGN, 4, 0, 13}, /* V9 - HaL */ 137 /* R_SPARC_H44 */ {0x0, FLG_RE_VERIFY, 4, 22, 22}, /* V9 */ 138 /* R_SPARC_M44 */ {0x3ff, FLG_RE_NOTREL, 4, 12, 10}, /* V9 */ 139 /* R_SPARC_L44 */ {0xfff, FLG_RE_NOTREL, 4, 0, 13}, /* V9 */ 140 /* R_SPARC_REGISTER */ {0x0, FLG_RE_REGISTER, 0, 0, 0}, /* SPECIAL */ 141 /* R_SPARC_UA64 */ {0x0, FLG_RE_VERIFY | FLG_RE_UNALIGN, 142 8, 0, 0}, /* V9 */ 143 /* R_SPARC_UA16 */ {0x0, FLG_RE_VERIFY | FLG_RE_UNALIGN, 144 2, 0, 0}, 145 /* R_SPARC_TLS_GD_HI22 */ {0x0, FLG_RE_GOTADD | FLG_RE_TLSINS | FLG_RE_TLSGD, 146 4, 10, 22}, 147 /* R_SPARC_TLS_GD_LO10 */ {0x3ff, FLG_RE_GOTADD | FLG_RE_TLSINS | 148 FLG_RE_TLSGD | FLG_RE_SIGN, 4, 0, 13}, 149 /* R_SPARC_TLS_GD_ADD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSGD, 0, 0, 0}, 150 /* R_SPARC_TLS_GD_CALL */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSGD, 0, 0, 0}, 151 /* R_SPARC_TLS_LDM_HI22 */ {0x0, FLG_RE_GOTADD | FLG_RE_TLSINS | FLG_RE_TLSLD, 152 4, 10, 22}, 153 /* R_SPARC_TLS_LDM_LO10 */ {0x3ff, FLG_RE_GOTADD | FLG_RE_TLSINS | 154 FLG_RE_TLSLD | FLG_RE_SIGN, 4, 0, 13}, 155 /* R_SPARC_TLS_LDM_ADD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSLD, 0, 0, 0}, 156 /* R_SPARC_TLS_LDM_CALL */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSLD, 0, 0, 0}, 157 /* R_SPARC_TLS_LDO_HIX22 */ {0x0, FLG_RE_VERIFY | FLG_RE_TLSINS | FLG_RE_TLSLD, 158 4, 10, 22}, 159 /* R_SPARC_TLS_LDO_LOX10 */ {0x3ff, FLG_RE_TLSINS | FLG_RE_SIGN | FLG_RE_TLSLD, 160 4, 0, 13}, 161 /* R_SPARC_TLS_LDO_ADD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSLD, 0, 0, 0}, 162 /* R_SPARC_TLS_IE_HI22 */ {0x0, FLG_RE_TLSINS | FLG_RE_GOTADD | FLG_RE_TLSIE, 163 4, 10, 22}, 164 /* R_SPARC_TLS_IE_LO10 */ {0x3ff, FLG_RE_TLSINS | FLG_RE_GOTADD | 165 FLG_RE_TLSIE | FLG_RE_SIGN, 4, 0, 13}, 166 /* R_SPARC_TLS_IE_LD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSIE, 0, 0, 0}, 167 /* R_SPARC_TLS_IE_LDX */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSIE, 0, 0, 0}, 168 /* R_SPARC_TLS_IE_ADD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSIE, 0, 0, 0}, 169 /* R_SPARC_TLS_LE_HIX22 */ {(Xword)(-1LL), 170 FLG_RE_VERIFY | FLG_RE_TLSINS | FLG_RE_TLSLE, 171 4, 10, 22}, 172 /* R_SPARC_TLS_LE_LOX10 */ {0x3ff, FLG_RE_TLSINS | FLG_RE_SIGN | FLG_RE_TLSLE, 173 4, 0, 13}, 174 /* R_SPARC_TLS_DTPMOD32 */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 175 /* R_SPARC_TLS_DTPMOD64 */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 176 /* R_SPARC_TLS_DTPOFF32 */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 177 /* R_SPARC_TLS_DTPOFF64 */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 178 /* R_SPARC_TLS_TPOFF32 */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 179 /* R_SPARC_TLS_TPOFF64 */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 180 /* R_SPARC_GOTDATA_HIX22 */ {0, FLG_RE_GOTREL, 4, 10, 22}, 181 /* R_SPARC_GOTDATA_LOX10 */ { 0x3ff, FLG_RE_GOTREL | FLG_RE_SIGN, 4, 0, 13}, 182 /* R_SPARC_GOTDATA_OP_HIX22 */ { 0x0, FLG_RE_GOTOPINS | FLG_RE_GOTADD, 183 4, 10, 22}, 184 /* R_SPARC_GOTDATA_OP_LOX10 */ { 0x3ff, FLG_RE_SIGN | FLG_RE_GOTOPINS | 185 FLG_RE_GOTADD, 4, 0, 13}, 186 /* R_SPARC_GOTDATA_OP */ { 0x0, FLG_RE_GOTOPINS, 0, 0, 0}, 187 /* R_SPARC_H34 */ {0x0, FLG_RE_NOTREL | FLG_RE_VERIFY, 4, 188 12, 22} /* V9 */ 189 }; 190 191 192 /* 193 * Write a single relocated value to its reference location. 194 * We assume we wish to add the relocation amount, value, to the 195 * value of the address already present in the instruction. 196 * 197 * NAME VALUE FIELD CALCULATION 198 * 199 * R_SPARC_NONE 0 none none 200 * R_SPARC_8 1 V-byte8 S + A 201 * R_SPARC_16 2 V-half16 S + A 202 * R_SPARC_32 3 V-word32 S + A 203 * R_SPARC_DISP8 4 V-byte8 S + A - P 204 * R_SPARC_DISP16 5 V-half16 S + A - P 205 * R_SPARC_DISP32 6 V-word32 S + A - P 206 * R_SPARC_WDISP30 7 V-disp30 (S + A - P) >> 2 207 * R_SPARC_WDISP22 8 V-disp22 (S + A - P) >> 2 208 * R_SPARC_HI22 9 T-imm22 (S + A) >> 10 209 * R_SPARC_22 10 V-imm22 S + A 210 * R_SPARC_13 11 V-simm13 S + A 211 * R_SPARC_LO10 12 T-simm13 (S + A) & 0x3ff 212 * R_SPARC_GOT10 13 T-simm13 G & 0x3ff 213 * R_SPARC_GOT13 14 V-simm13 G 214 * R_SPARC_GOT22 15 T-imm22 G >> 10 215 * R_SPARC_PC10 16 T-simm13 (S + A - P) & 0x3ff 216 * R_SPARC_PC22 17 V-disp22 (S + A - P) >> 10 217 * R_SPARC_WPLT30 18 V-disp30 (L + A - P) >> 2 218 * R_SPARC_COPY 19 none none 219 * R_SPARC_GLOB_DAT 20 V-word32 S + A 220 * R_SPARC_JMP_SLOT 21 V-plt22 S + A 221 * R_SPARC_RELATIVE 22 V-word32 S + A 222 * R_SPARC_UA32 23 V-word32 S + A 223 * R_SPARC_PLT32 24 V-word32 L + A 224 * R_SPARC_HIPLT22 25 T-imm22 (L + A) >> 10 225 * R_SPARC_LOPLT10 26 T-simm13 (L + A) & 0x3ff 226 * R_SPARC_PCPLT32 27 V-word32 L + A - P 227 * R_SPARC_PCPLT22 28 V-disp22 (L + A - P) >> 10 228 * R_SPARC_PCPLT10 29 V-simm13 (L + A - P) & 0x3ff 229 * R_SPARC_10 30 V-simm10 S + A 230 * R_SPARC_11 31 V-simm11 S + A 231 * R_SPARC_64 32 V-xword64 S + A 232 * R_SPARC_OLO10 33 V-simm13 ((S + A) & 0x3ff) + O 233 * R_SPARC_HH22 34 V-imm22 (S + A) >> 42 234 * R_SPARC_HM10 35 T-simm13 ((S + A) >> 32) & 0x3ff 235 * R_SPARC_LM22 36 T-imm22 (S + A) >> 10 236 * R_SPARC_PC_HH22 37 V-imm22 (S + A - P) >> 42 237 * R_SPARC_PC_HM10 38 T-simm13 ((S + A - P) >> 32) & 0x3ff 238 * R_SPARC_PC_LM22 39 T-imm22 (S + A - P) >> 10 239 * R_SPARC_WDISP16 40 V-d2/disp14 (S + A - P) >> 2 240 * R_SPARC_WDISP19 41 V-disp19 (S + A - P) >> 2 241 * R_SPARC_GLOB_JMP 42 V-xword64 S + A 242 * R_SPARC_7 43 V-imm7 S + A 243 * R_SPARC_5 44 V-imm5 S + A 244 * R_SPARC_6 45 V-imm6 S + A 245 * R_SPARC_DISP64 46 V-xword64 S + A - P 246 * R_SPARC_PLT64 47 V-xword64 L + A 247 * R_SPARC_HIX22 48 V-imm22 ((S + A) ^ 248 * 0xffffffffffffffff) >> 10 249 * R_SPARC_LOX10 49 T-simm13 ((S + A) & 0x3ff) | 0x1c00 250 * R_SPARC_H44 50 V-imm22 (S + A) >> 22 251 * R_SPARC_M44 51 T-imm10 ((S + A) >> 12) & 0x3ff 252 * R_SPARC_L44 52 T-imm13 (S + A) & 0xfff 253 * R_SPARC_REGISTER 53 V-xword64 S + A 254 * R_SPARC_UA64 54 V-xword64 S + A 255 * R_SPARC_UA16 55 V-half16 S + A 256 * R_SPARC_TLS_GD_HI22 56 T-simm22 @dtlndx(S + A) >> 10 257 * R_SPARC_TLS_GD_LO10 57 T-simm13 @dtlndx(S + A) & 0x3ff 258 * R_SPARC_TLS_GD_ADD 58 none SPECIAL 259 * R_SPARC_TLS_GD_CALL 59 V-disp30 SPECIAL 260 * R_SPARC_TLS_LDM_HI22 60 T-simm22 @tmndx(S + A) >> 10 261 * R_SPARC_TLS_LDM_LO10 61 T-simm13 @tmndx(S + A) & 0x3ff 262 * R_SPARC_TLS_LDM_ADD 62 none SPECIAL 263 * R_SPARC_TLS_LDM_CALL 63 V-disp30 SPECIAL 264 * R_SPARC_TLS_LDO_HIX22 64 V-simm22 @dtpoff(S + A) >> 10 265 * R_SPARC_TLS_LDO_LOX10 65 T-simm13 @dtpoff(S + A) & 0x3ff 266 * R_SPARC_TLS_LDO_ADD 66 none SPECIAL 267 * R_SPARC_TLS_IE_HI22 67 T-simm22 @got(@tpoff(S + A)) >> 10 268 * R_SPARC_TLS_IE_LO10 68 T-simm13 @got(@tpoff(S + A)) & 0x3ff 269 * R_SPARC_TLS_IE_LD 69 none SPECIAL 270 * R_SPARC_TLS_IE_LDX 70 none SPECIAL 271 * R_SPARC_TLS_IE_ADD 71 none SPECIAL 272 * R_SPARC_TLS_LE_HIX22 72 V-simm22 (@tpoff(S + A) ^ 273 * 0xffffffff) >> 10 274 * R_SPARC_TLS_LE_LOX10 73 T-simm13 (@tpoff(S + A) & 0x3ff) | 0x1c00 275 * R_SPARC_TLS_DTPMOD32 74 V-word32 @dtmod(S + A) 276 * R_SPARC_TLS_DTPMOD64 75 V-word64 @dtmod(S + A) 277 * R_SPARC_TLS_DTPOFF32 76 V-word32 @dtpoff(S + A) 278 * R_SPARC_TLS_DTPOFF64 77 V-word64 @dtpoff(S + A) 279 * R_SPARC_TLS_TPOFF32 78 V-word32 @tpoff(S + A) 280 * R_SPARC_TLS_TPOFF64 79 V-word64 @tpoff(S + A) 281 * R_SPARC_GOTDATA_HIX22 80 T-imm22 ((S + A - GOT) >> 10) ^ 282 * ((S + A - GOT) >> 31) 283 * R_SPARC_GOTDATA_LOX10 81 T-simm13 ((S + A - GOT) & 0x3ff) | 284 * (((S + A - GOT) >> 31) & 285 * 0x1c00) 286 * R_SPARC_GOTDATA_OP_HIX22 82 T-imm22 (G >> 10) & (G >> 31) 287 * R_SPARC_GOTDATA_OP_LOX10 83 T-simm13 (G & 0x3ff) | 288 * ((G >> 31) & 0x1c00) 289 * R_SPARC_H34 84 V-imm22 (S + A) >> 12 290 * 291 * This is Figure 4-20: Relocation Types from the Draft Copy of 292 * the ABI, Printed on 11/29/88. 293 * 294 * NOTE1: relocations 24->45 are newly registered relocations to support 295 * C++ ABI & SPARC V8+ and SPARC V9 architectures (1/9/94), and 296 * 64-bit relocations 46-55 were added for SPARC V9. 297 * 298 * NOTE2: relocations 56->79 are added to support Thread-Local storage 299 * as recorded in PSARC/2001/509 300 * 301 * NOTE3: The value to be passed for relocations R_SPARC_HIX22 and 302 * R_SPARC_TLS_HIX22 are negative values. So the upper 10 or 40 bits 303 * are 1. (So when the exclusive OR is applied, the upper bits 304 * will be 0.) 305 * 306 * Relocation calculations: 307 * 308 * The FIELD names indicate whether the relocation type checks for overflow. 309 * A calculated relocation value may be larger than the intended field, and 310 * the relocation type may verify (V) that the value fits, or truncate (T) 311 * the result. 312 * 313 * CALCULATION uses the following notation: 314 * A the addend used 315 * B the base address of the shared object in memory 316 * G the offset into the global offset table 317 * L the procedure linkage entry 318 * P the place of the storage unit being relocated 319 * S the value of the symbol 320 * O secondary addend (extra offset) in v9 r_info field 321 * 322 * @dtlndx(x): Allocate two contiguous entries in the GOT table to hold 323 * a Tls_index structure (for passing to __tls_get_addr()). The 324 * instructions referencing this entry will be bound to the first 325 * of the two GOT entries. 326 * 327 * @tmndx(x): Allocate two contiguous entries in the GOT table to hold 328 * a Tls_index structure (for passing to __tls_get_addr()). The 329 * ti_offset field of the Tls_index will be set to 0 (zero) and the 330 * ti_module will be filled in at run-time. The call to 331 * __tls_get_addr() will return the starting offset of the dynamic 332 * TLS block. 333 * 334 * @dtpoff(x): calculate the tlsoffset relative to the TLS block. 335 * 336 * @tpoff(x): calculate the negative tlsoffset relative to the static 337 * TLS block. This value can be added to the thread-pointer to 338 * calculate the tls address. 339 * 340 * @dtpmod(x): calculate the module id of the object containing symbol x. 341 * 342 * The calculations in the CALCULATION column are assumed to have been performed 343 * before calling this function except for the addition of the addresses in the 344 * instructions. 345 * 346 * Upon successful completion of do_reloc() *value will be set to the 347 * 'bit-shifted' value that will be or'ed into memory. 348 */ 349 /* ARGSUSED3 */ 350 int 351 do_reloc(uchar_t rtype, uchar_t *off, Xword *value, const char *sym, 352 const char *file) 353 { 354 Xword uvalue = 0; 355 Xword basevalue, sigbit_mask, sigfit_mask; 356 Xword corevalue = *value; 357 uchar_t bshift; 358 int field_size, re_flags; 359 const Rel_entry * rep; 360 361 rep = &reloc_table[rtype]; 362 bshift = rep->re_bshift; 363 field_size = rep->re_fsize; 364 re_flags = rep->re_flags; 365 sigbit_mask = S_MASK(rep->re_sigbits); 366 367 if ((re_flags & FLG_RE_SIGN) && sigbit_mask) { 368 /* 369 * sigfit_mask takes into account that a value 370 * might be signed and discards the signbit for 371 * comparison. 372 */ 373 sigfit_mask = S_MASK(rep->re_sigbits - 1); 374 } else 375 sigfit_mask = sigbit_mask; 376 377 if (field_size == 0) { 378 REL_ERR_UNIMPL(file, sym, rtype); 379 return (0); 380 } 381 382 if (re_flags & FLG_RE_UNALIGN) { 383 int i; 384 uchar_t *dest = (uchar_t *)&basevalue; 385 386 /* 387 * Adjust the offset. 388 */ 389 /* LINTED */ 390 i = (int)(sizeof (Xword) - field_size); 391 if (i > 0) 392 dest += i; 393 394 basevalue = 0; 395 for (i = field_size - 1; i >= 0; i--) 396 dest[i] = off[i]; 397 } else { 398 if (((field_size == 2) && ((uintptr_t)off & 0x1)) || 399 ((field_size == 4) && ((uintptr_t)off & 0x3)) || 400 ((field_size == 8) && ((uintptr_t)off & 0x7))) { 401 REL_ERR_NONALIGN(file, sym, rtype, (uintptr_t)off); 402 return (0); 403 } 404 switch (field_size) { 405 case 1: 406 basevalue = (Xword)*((uchar_t *)off); 407 break; 408 case 2: 409 /* LINTED */ 410 basevalue = (Xword)*((Half *)off); 411 break; 412 case 4: 413 /* LINTED */ 414 basevalue = (Xword)*((Word *)off); 415 break; 416 case 8: 417 /* LINTED */ 418 basevalue = (Xword)*((Xword *)off); 419 break; 420 default: 421 REL_ERR_UNNOBITS(file, sym, rtype, rep->re_fsize * 8); 422 return (0); 423 } 424 } 425 426 if (sigbit_mask) { 427 /* 428 * The WDISP16 relocation is an unusual one in that it's bits 429 * are not all contiguous. We have to selectivly pull them out. 430 */ 431 if (re_flags & FLG_RE_WDISP16) { 432 uvalue = ((basevalue & 0x300000) >> 6) | 433 (basevalue & 0x3fff); 434 basevalue &= ~0x303fff; 435 } else { 436 uvalue = sigbit_mask & basevalue; 437 basevalue &= ~sigbit_mask; 438 } 439 /* 440 * If value is signed make sure that we signextend the uvalue. 441 */ 442 if (re_flags & FLG_RE_SIGN) { 443 if (uvalue & (~sigbit_mask & sigfit_mask)) 444 uvalue |= ~sigbit_mask; 445 } 446 } else 447 uvalue = basevalue; 448 449 if (bshift) 450 uvalue <<= bshift; 451 452 uvalue += *value; 453 454 if (rep->re_mask && 455 ((rtype == R_SPARC_HIX22) || (rtype == R_SPARC_TLS_LE_HIX22))) 456 uvalue ^= rep->re_mask; 457 458 if (bshift) { 459 /* 460 * This is to check that we are not attempting to 461 * jump to a non-4 byte aligned address. 462 */ 463 if ((bshift == 2) && (uvalue & 0x3)) { 464 REL_ERR_LOSEBITS(file, sym, rtype, uvalue, 2, off); 465 return (0); 466 } 467 468 if (re_flags & FLG_RE_SIGN) { 469 uvalue = (Sxword)uvalue >> bshift; 470 } else { 471 uvalue >>= bshift; 472 } 473 corevalue >>= bshift; 474 } 475 476 if ((rtype == R_SPARC_GOTDATA_HIX22) || 477 (rtype == R_SPARC_GOTDATA_OP_HIX22)) { 478 uvalue ^= ((Sxword)(*value) >> 31); 479 corevalue ^= ((Sxword)(*value) >> 31); 480 } 481 482 if (rep->re_mask && 483 (rtype != R_SPARC_HIX22) && (rtype != R_SPARC_TLS_LE_HIX22) && 484 (rtype != R_SPARC_GOTDATA_HIX22)) 485 uvalue &= rep->re_mask; 486 487 if ((rtype == R_SPARC_LOX10) || (rtype == R_SPARC_TLS_LE_LOX10)) { 488 uvalue |= 0x1c00; 489 corevalue |= 0x1c00; 490 } 491 492 if ((rtype == R_SPARC_GOTDATA_LOX10) || 493 (rtype == R_SPARC_GOTDATA_OP_LOX10)) { 494 uvalue |= ((Sxword)(*value) >> 31) & 0x1c00; 495 corevalue |= ((Sxword)(*value) >> 31) & 0x1c00; 496 } 497 498 499 if ((re_flags & FLG_RE_VERIFY) && sigbit_mask) { 500 if (((re_flags & FLG_RE_SIGN) && 501 (S_INRANGE((Sxword)uvalue, rep->re_sigbits - 1) == 0)) || 502 (!(re_flags & FLG_RE_SIGN) && 503 ((sigbit_mask & uvalue) != uvalue))) { 504 REL_ERR_NOFIT(file, sym, rtype, uvalue); 505 return (0); 506 } 507 } 508 509 if (sigbit_mask) { 510 /* 511 * Again the R_SPARC_WDISP16 relocation takes special 512 * processing because of its non-continguous bits. 513 */ 514 if (re_flags & FLG_RE_WDISP16) 515 uvalue = ((uvalue & 0xc000) << 6) | 516 (uvalue & 0x3fff); 517 else 518 uvalue &= sigbit_mask; 519 /* 520 * Combine value back with original word 521 */ 522 uvalue |= basevalue; 523 } 524 *value = corevalue; 525 526 if (re_flags & FLG_RE_UNALIGN) { 527 int i; 528 uchar_t *src = (uchar_t *)&uvalue; 529 530 /* 531 * Adjust the offset. 532 */ 533 /* LINTED */ 534 i = (int)(sizeof (Xword) - field_size); 535 if (i > 0) 536 src += i; 537 538 for (i = field_size - 1; i >= 0; i--) 539 off[i] = src[i]; 540 } else { 541 switch (rep->re_fsize) { 542 case 1: 543 /* LINTED */ 544 *((uchar_t *)off) = (uchar_t)uvalue; 545 break; 546 case 2: 547 /* LINTED */ 548 *((Half *)off) = (Half)uvalue; 549 break; 550 case 4: 551 /* LINTED */ 552 *((Word *)off) = uvalue; 553 break; 554 case 8: 555 /* LINTED */ 556 *((Xword *)off) = uvalue; 557 break; 558 default: 559 /* 560 * To keep chkmsg() happy: MSG_INTL(MSG_REL_UNSUPSZ) 561 */ 562 REL_ERR_UNSUPSZ(file, sym, rtype, rep->re_fsize); 563 return (0); 564 } 565 } 566 return (1); 567 } 568