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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #if defined(_KERNEL) 30 #include <sys/types.h> 31 #include "reloc.h" 32 #else 33 #include <stdio.h> 34 #include "sgs.h" 35 #include "machdep.h" 36 #include "libld.h" 37 #include "reloc.h" 38 #include "conv.h" 39 #include "msg.h" 40 #endif 41 42 /* 43 * This table represents the current relocations that do_reloc() is able to 44 * process. The relocations below that are marked SPECIAL are relocations that 45 * take special processing and shouldn't actually ever be passed to do_reloc(). 46 */ 47 const Rel_entry reloc_table[R_SPARC_NUM] = { 48 /* R_SPARC_NONE */ {0x0, FLG_RE_NOTREL, 0, 0, 0}, 49 /* R_SPARC_8 */ {0x0, FLG_RE_VERIFY, 1, 0, 0}, 50 /* R_SPARC_16 */ {0x0, FLG_RE_VERIFY, 2, 0, 0}, 51 /* R_SPARC_32 */ {0x0, FLG_RE_VERIFY, 4, 0, 0}, 52 /* R_SPARC_DISP8 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 53 1, 0, 0}, 54 /* R_SPARC_DISP16 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 55 2, 0, 0}, 56 /* R_SPARC_DISP32 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 57 4, 0, 0}, 58 /* R_SPARC_WDISP30 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 59 4, 2, 30}, 60 /* R_SPARC_WDISP22 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 61 4, 2, 22}, 62 #if defined(_ELF64) 63 /* R_SPARC_HI22 */ {0x0, FLG_RE_VERIFY, 4, 10, 22}, 64 #else 65 /* R_SPARC_HI22 */ {0x0, FLG_RE_NOTREL, 4, 10, 22}, 66 #endif 67 /* R_SPARC_22 */ {0x0, FLG_RE_VERIFY, 4, 0, 22}, 68 /* R_SPARC_13 */ {0x0, FLG_RE_VERIFY | FLG_RE_SIGN, 4, 0, 13}, 69 /* R_SPARC_LO10 */ {0x3ff, FLG_RE_SIGN, 4, 0, 13}, 70 /* R_SPARC_GOT10 */ {0x3ff, FLG_RE_GOTADD | FLG_RE_SIGN, 4, 0, 13}, 71 /* R_SPARC_GOT13 */ {0x0, FLG_RE_GOTADD | FLG_RE_VERIFY | FLG_RE_SIGN, 72 4, 0, 13}, 73 /* R_SPARC_GOT22 */ {0x0, FLG_RE_GOTADD, 4, 10, 22}, 74 /* R_SPARC_PC10 */ {0x3ff, FLG_RE_PCREL | FLG_RE_SIGN | FLG_RE_LOCLBND, 75 4, 0, 13}, 76 /* R_SPARC_PC22 */ {0x0, FLG_RE_PCREL | FLG_RE_SIGN | FLG_RE_VERIFY | 77 FLG_RE_LOCLBND, 4, 10, 22}, 78 /* R_SPARC_WPLT30 */ {0x0, FLG_RE_PCREL | FLG_RE_PLTREL | 79 FLG_RE_VERIFY | FLG_RE_SIGN, 80 4, 2, 30}, 81 /* R_SPARC_COPY */ {0x0, 0, 0, 0, 0}, /* SPECIAL */ 82 #if defined(_ELF64) 83 /* R_SPARC_GLOB_DAT */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 84 #else 85 /* R_SPARC_GLOB_DAT */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 86 #endif 87 /* R_SPARC_JMP_SLOT */ {0x0, 0, 0, 0, 0}, /* SPECIAL */ 88 #if defined(_ELF64) 89 /* R_SPARC_RELATIVE */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 90 #else 91 /* R_SPARC_RELATIVE */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 92 #endif 93 /* R_SPARC_UA32 */ {0x0, FLG_RE_UNALIGN, 4, 0, 0}, 94 /* R_SPARC_PLT32 */ {0x0, FLG_RE_PLTREL | FLG_RE_VERIFY | 95 FLG_RE_ADDRELATIVE, 4, 0, 0}, 96 /* R_SPARC_HIPLT22 */ {0x0, FLG_RE_PLTREL, 4, 10, 22}, 97 /* R_SPARC_LOPLT10 */ {0x3ff, FLG_RE_PLTREL, 4, 0, 13}, 98 /* R_SPARC_PCPLT32 */ {0x0, FLG_RE_PLTREL | FLG_RE_PCREL | FLG_RE_VERIFY, 99 4, 0, 0}, 100 /* R_SPARC_PCPLT22 */ {0x0, FLG_RE_PLTREL | FLG_RE_PCREL | FLG_RE_VERIFY, 101 4, 10, 22}, 102 /* R_SPARC_PCPLT10 */ {0x3ff, FLG_RE_PLTREL | FLG_RE_PCREL | FLG_RE_VERIFY, 103 4, 0, 13}, 104 /* R_SPARC_10 */ {0x0, FLG_RE_VERIFY | FLG_RE_SIGN, 4, 0, 10}, 105 /* R_SPARC_11 */ {0x0, FLG_RE_VERIFY | FLG_RE_SIGN, 4, 0, 11}, 106 /* R_SPARC_64 */ {0x0, FLG_RE_VERIFY, 8, 0, 0}, /* V9 */ 107 /* R_SPARC_OLO10 */ {0x3ff, FLG_RE_EXTOFFSET | FLG_RE_SIGN, 108 4, 0, 13}, /* V9 */ 109 /* R_SPARC_HH22 */ {0x0, FLG_RE_VERIFY, 4, 42, 22}, /* V9 */ 110 /* R_SPARC_HM10 */ {0x3ff, FLG_RE_SIGN, 4, 32, 13}, /* V9 */ 111 /* R_SPARC_LM22 */ {0x0, FLG_RE_NOTREL, 4, 10, 22}, /* V9 */ 112 /* R_SPARC_PC_HH22 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY, 113 4, 42, 22}, /* V9 */ 114 /* R_SPARC_PC_HM10 */ {0x3ff, FLG_RE_PCREL | FLG_RE_SIGN, 115 4, 32, 13}, /* V9 */ 116 /* R_SPARC_PC_LM22 */ {0x0, FLG_RE_PCREL, 117 4, 10, 22}, /* V9 */ 118 /* R_SPARC_WDISP16 */ {0x0, FLG_RE_PCREL | FLG_RE_WDISP16 | 119 FLG_RE_VERIFY | FLG_RE_SIGN, 120 4, 2, 16}, 121 /* R_SPARC_WDISP19 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 122 4, 2, 19}, 123 /* R_SPARC_GLOB_JMP */ {0x0, 0, 0, 0, 0}, /* V9 - not implemented */ 124 /* removed from v9 ABI */ 125 /* R_SPARC_7 */ {0x0, FLG_RE_NOTREL, 4, 0, 7}, 126 /* R_SPARC_5 */ {0x0, FLG_RE_NOTREL, 4, 0, 5}, 127 /* R_SPARC_6 */ {0x0, FLG_RE_NOTREL, 4, 0, 6}, 128 /* R_SPARC_DISP64 */ {0x0, FLG_RE_PCREL | FLG_RE_VERIFY | FLG_RE_SIGN, 129 8, 0, 0}, 130 /* R_SPARC_PLT64 */ {0x0, FLG_RE_PLTREL | FLG_RE_VERIFY | 131 FLG_RE_ADDRELATIVE, 8, 0, 0}, 132 /* R_SPARC_HIX22 */ {(Xword)(-1LL), FLG_RE_VERIFY, 133 4, 10, 22}, /* V9 - HaL */ 134 /* R_SPARC_LOX10 */ {0x3ff, FLG_RE_SIGN, 4, 0, 13}, /* V9 - HaL */ 135 /* R_SPARC_H44 */ {0x0, FLG_RE_VERIFY, 4, 22, 22}, /* V9 */ 136 /* R_SPARC_M44 */ {0x3ff, FLG_RE_NOTREL, 4, 12, 10}, /* V9 */ 137 /* R_SPARC_L44 */ {0xfff, FLG_RE_NOTREL, 4, 0, 13}, /* V9 */ 138 /* R_SPARC_REGISTER */ {0x0, FLG_RE_REGISTER, 0, 0, 0}, /* SPECIAL */ 139 /* R_SPARC_UA64 */ {0x0, FLG_RE_VERIFY | FLG_RE_UNALIGN, 140 8, 0, 0}, /* V9 */ 141 /* R_SPARC_UA16 */ {0x0, FLG_RE_VERIFY | FLG_RE_UNALIGN, 142 2, 0, 0}, 143 /* R_SPARC_TLS_GD_HI22 */ {0x0, FLG_RE_GOTADD | FLG_RE_TLSINS | FLG_RE_TLSGD, 144 4, 10, 22}, 145 /* R_SPARC_TLS_GD_LO10 */ {0x3ff, FLG_RE_GOTADD | FLG_RE_TLSINS | 146 FLG_RE_TLSGD | FLG_RE_SIGN, 4, 0, 13}, 147 /* R_SPARC_TLS_GD_ADD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSGD, 0, 0, 0}, 148 /* R_SPARC_TLS_GD_CALL */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSGD, 0, 0, 0}, 149 /* R_SPARC_TLS_LDM_HI22 */ {0x0, FLG_RE_GOTADD | FLG_RE_TLSINS | FLG_RE_TLSLD, 150 4, 10, 22}, 151 /* R_SPARC_TLS_LDM_LO10 */ {0x3ff, FLG_RE_GOTADD | FLG_RE_TLSINS | 152 FLG_RE_TLSLD | FLG_RE_SIGN, 4, 0, 13}, 153 /* R_SPARC_TLS_LDM_ADD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSLD, 0, 0, 0}, 154 /* R_SPARC_TLS_LDM_CALL */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSLD, 0, 0, 0}, 155 /* R_SPARC_TLS_LDO_HIX22 */ {0x0, FLG_RE_VERIFY | FLG_RE_TLSINS | FLG_RE_TLSLD, 156 4, 10, 22}, 157 /* R_SPARC_TLS_LDO_LOX10 */ {0x3ff, FLG_RE_TLSINS | FLG_RE_SIGN | FLG_RE_TLSLD, 158 4, 0, 13}, 159 /* R_SPARC_TLS_LDO_ADD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSLD, 0, 0, 0}, 160 /* R_SPARC_TLS_IE_HI22 */ {0x0, FLG_RE_TLSINS | FLG_RE_GOTADD | FLG_RE_TLSIE, 161 4, 10, 22}, 162 /* R_SPARC_TLS_IE_LO10 */ {0x3ff, FLG_RE_TLSINS | FLG_RE_GOTADD | 163 FLG_RE_TLSIE | FLG_RE_SIGN, 4, 0, 13}, 164 /* R_SPARC_TLS_IE_LD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSIE, 0, 0, 0}, 165 /* R_SPARC_TLS_IE_LDX */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSIE, 0, 0, 0}, 166 /* R_SPARC_TLS_IE_ADD */ {0x0, FLG_RE_TLSINS | FLG_RE_TLSIE, 0, 0, 0}, 167 /* R_SPARC_TLS_LE_HIX22 */ {(Xword)(-1LL), 168 FLG_RE_VERIFY | FLG_RE_TLSINS | FLG_RE_TLSLE, 169 4, 10, 22}, 170 /* R_SPARC_TLS_LE_LOX10 */ {0x3ff, FLG_RE_TLSINS | FLG_RE_SIGN | FLG_RE_TLSLE, 171 4, 0, 13}, 172 /* R_SPARC_TLS_DTPMOD32 */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 173 /* R_SPARC_TLS_DTPMOD64 */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 174 /* R_SPARC_TLS_DTPOFF32 */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 175 /* R_SPARC_TLS_DTPOFF64 */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 176 /* R_SPARC_TLS_TPOFF32 */ {0x0, FLG_RE_NOTREL, 4, 0, 0}, 177 /* R_SPARC_TLS_TPOFF64 */ {0x0, FLG_RE_NOTREL, 8, 0, 0}, 178 /* R_SPARC_GOTDATA_HIX22 */ {0, FLG_RE_GOTREL, 4, 10, 22}, 179 /* R_SPARC_GOTDATA_LOX10 */ { 0x3ff, FLG_RE_GOTREL | FLG_RE_SIGN, 4, 0, 13}, 180 /* R_SPARC_GOTDATA_OP_HIX22 */ { 0x0, FLG_RE_GOTOPINS | FLG_RE_GOTADD, 181 4, 10, 22}, 182 /* R_SPARC_GOTDATA_OP_LOX10 */ { 0x3ff, FLG_RE_SIGN | FLG_RE_GOTOPINS | 183 FLG_RE_GOTADD, 4, 0, 13}, 184 /* R_SPARC_GOTDATA_OP */ { 0x0, FLG_RE_GOTOPINS, 0, 0, 0}, 185 /* R_SPARC_H34 */ {0x0, FLG_RE_VERIFY, 4, 12, 22} /* V9 */ 186 }; 187 188 189 /* 190 * Write a single relocated value to its reference location. 191 * We assume we wish to add the relocation amount, value, to the 192 * value of the address already present in the instruction. 193 * 194 * NAME VALUE FIELD CALCULATION 195 * 196 * R_SPARC_NONE 0 none none 197 * R_SPARC_8 1 V-byte8 S + A 198 * R_SPARC_16 2 V-half16 S + A 199 * R_SPARC_32 3 V-word32 S + A 200 * R_SPARC_DISP8 4 V-byte8 S + A - P 201 * R_SPARC_DISP16 5 V-half16 S + A - P 202 * R_SPARC_DISP32 6 V-word32 S + A - P 203 * R_SPARC_WDISP30 7 V-disp30 (S + A - P) >> 2 204 * R_SPARC_WDISP22 8 V-disp22 (S + A - P) >> 2 205 * R_SPARC_HI22 9 T-imm22 (S + A) >> 10 206 * R_SPARC_22 10 V-imm22 S + A 207 * R_SPARC_13 11 V-simm13 S + A 208 * R_SPARC_LO10 12 T-simm13 (S + A) & 0x3ff 209 * R_SPARC_GOT10 13 T-simm13 G & 0x3ff 210 * R_SPARC_GOT13 14 V-simm13 G 211 * R_SPARC_GOT22 15 T-imm22 G >> 10 212 * R_SPARC_PC10 16 T-simm13 (S + A - P) & 0x3ff 213 * R_SPARC_PC22 17 V-disp22 (S + A - P) >> 10 214 * R_SPARC_WPLT30 18 V-disp30 (L + A - P) >> 2 215 * R_SPARC_COPY 19 none none 216 * R_SPARC_GLOB_DAT 20 V-word32 S + A 217 * R_SPARC_JMP_SLOT 21 V-plt22 S + A 218 * R_SPARC_RELATIVE 22 V-word32 S + A 219 * R_SPARC_UA32 23 V-word32 S + A 220 * R_SPARC_PLT32 24 V-word32 L + A 221 * R_SPARC_HIPLT22 25 T-imm22 (L + A) >> 10 222 * R_SPARC_LOPLT10 26 T-simm13 (L + A) & 0x3ff 223 * R_SPARC_PCPLT32 27 V-word32 L + A - P 224 * R_SPARC_PCPLT22 28 V-disp22 (L + A - P) >> 10 225 * R_SPARC_PCPLT10 29 V-simm13 (L + A - P) & 0x3ff 226 * R_SPARC_10 30 V-simm10 S + A 227 * R_SPARC_11 31 V-simm11 S + A 228 * R_SPARC_64 32 V-xword64 S + A 229 * R_SPARC_OLO10 33 V-simm13 ((S + A) & 0x3ff) + O 230 * R_SPARC_HH22 34 V-imm22 (S + A) >> 42 231 * R_SPARC_HM10 35 T-simm13 ((S + A) >> 32) & 0x3ff 232 * R_SPARC_LM22 36 T-imm22 (S + A) >> 10 233 * R_SPARC_PC_HH22 37 V-imm22 (S + A - P) >> 42 234 * R_SPARC_PC_HM10 38 T-simm13 ((S + A - P) >> 32) & 0x3ff 235 * R_SPARC_PC_LM22 39 T-imm22 (S + A - P) >> 10 236 * R_SPARC_WDISP16 40 V-d2/disp14 (S + A - P) >> 2 237 * R_SPARC_WDISP19 41 V-disp19 (S + A - P) >> 2 238 * R_SPARC_GLOB_JMP 42 V-xword64 S + A 239 * R_SPARC_7 43 V-imm7 S + A 240 * R_SPARC_5 44 V-imm5 S + A 241 * R_SPARC_6 45 V-imm6 S + A 242 * R_SPARC_DISP64 46 V-xword64 S + A - P 243 * R_SPARC_PLT64 47 V-xword64 L + A 244 * R_SPARC_HIX22 48 V-imm22 ((S + A) ^ 245 * 0xffffffffffffffff) >> 10 246 * R_SPARC_LOX10 49 T-simm13 ((S + A) & 0x3ff) | 0x1c00 247 * R_SPARC_H44 50 V-imm22 (S + A) >> 22 248 * R_SPARC_M44 51 T-imm10 ((S + A) >> 12) & 0x3ff 249 * R_SPARC_L44 52 T-imm13 (S + A) & 0xfff 250 * R_SPARC_REGISTER 53 V-xword64 S + A 251 * R_SPARC_UA64 54 V-xword64 S + A 252 * R_SPARC_UA16 55 V-half16 S + A 253 * R_SPARC_TLS_GD_HI22 56 T-simm22 @dtlndx(S + A) >> 10 254 * R_SPARC_TLS_GD_LO10 57 T-simm13 @dtlndx(S + A) & 0x3ff 255 * R_SPARC_TLS_GD_ADD 58 none SPECIAL 256 * R_SPARC_TLS_GD_CALL 59 V-disp30 SPECIAL 257 * R_SPARC_TLS_LDM_HI22 60 T-simm22 @tmndx(S + A) >> 10 258 * R_SPARC_TLS_LDM_LO10 61 T-simm13 @tmndx(S + A) & 0x3ff 259 * R_SPARC_TLS_LDM_ADD 62 none SPECIAL 260 * R_SPARC_TLS_LDM_CALL 63 V-disp30 SPECIAL 261 * R_SPARC_TLS_LDO_HIX22 64 V-simm22 @dtpoff(S + A) >> 10 262 * R_SPARC_TLS_LDO_LOX10 65 T-simm13 @dtpoff(S + A) & 0x3ff 263 * R_SPARC_TLS_LDO_ADD 66 none SPECIAL 264 * R_SPARC_TLS_IE_HI22 67 T-simm22 @got(@tpoff(S + A)) >> 10 265 * R_SPARC_TLS_IE_LO10 68 T-simm13 @got(@tpoff(S + A)) & 0x3ff 266 * R_SPARC_TLS_IE_LD 69 none SPECIAL 267 * R_SPARC_TLS_IE_LDX 70 none SPECIAL 268 * R_SPARC_TLS_IE_ADD 71 none SPECIAL 269 * R_SPARC_TLS_LE_HIX22 72 V-simm22 (@tpoff(S + A) ^ 270 * 0xffffffff) >> 10 271 * R_SPARC_TLS_LE_LOX10 73 T-simm13 (@tpoff(S + A) & 0x3ff) | 0x1c00 272 * R_SPARC_TLS_DTPMOD32 74 V-word32 @dtmod(S + A) 273 * R_SPARC_TLS_DTPMOD64 75 V-word64 @dtmod(S + A) 274 * R_SPARC_TLS_DTPOFF32 76 V-word32 @dtpoff(S + A) 275 * R_SPARC_TLS_DTPOFF64 77 V-word64 @dtpoff(S + A) 276 * R_SPARC_TLS_TPOFF32 78 V-word32 @tpoff(S + A) 277 * R_SPARC_TLS_TPOFF64 79 V-word64 @tpoff(S + A) 278 * R_SPARC_GOTDATA_HIX22 80 T-imm22 ((S + A - GOT) >> 10) ^ 279 * ((S + A - GOT) >> 31) 280 * R_SPARC_GOTDATA_LOX10 81 T-simm13 ((S + A - GOT) & 0x3ff) | 281 * (((S + A - GOT) >> 31) & 282 * 0x1c00) 283 * R_SPARC_GOTDATA_OP_HIX22 82 T-imm22 (G >> 10) & (G >> 31) 284 * R_SPARC_GOTDATA_OP_LOX10 83 T-simm13 (G & 0x3ff) | 285 * ((G >> 31) & 0x1c00) 286 * R_SPARC_H34 84 V-imm22 (S + A) >> 12 287 * 288 * This is Figure 4-20: Relocation Types from the Draft Copy of 289 * the ABI, Printed on 11/29/88. 290 * 291 * NOTE1: relocations 24->45 are newly registered relocations to support 292 * C++ ABI & SPARC V8+ and SPARC V9 architectures (1/9/94), and 293 * 64-bit relocations 46-55 were added for SPARC V9. 294 * 295 * NOTE2: relocations 56->79 are added to support Thread-Local storage 296 * as recorded in PSARC/2001/509 297 * 298 * NOTE3: The value to be passed for relocations R_SPARC_HIX22 and 299 * R_SPARC_TLS_HIX22 are negative values. So the upper 10 or 40 bits 300 * are 1. (So when the exclusive OR is applied, the upper bits 301 * will be 0.) 302 * 303 * Relocation calculations: 304 * 305 * The FIELD names indicate whether the relocation type checks for overflow. 306 * A calculated relocation value may be larger than the intended field, and 307 * the relocation type may verify (V) that the value fits, or truncate (T) 308 * the result. 309 * 310 * CALCULATION uses the following notation: 311 * A the addend used 312 * B the base address of the shared object in memory 313 * G the offset into the global offset table 314 * L the procedure linkage entry 315 * P the place of the storage unit being relocated 316 * S the value of the symbol 317 * O secondary addend (extra offset) in v9 r_info field 318 * 319 * @dtlndx(x): Allocate two contiguous entries in the GOT table to hold 320 * a Tls_index structure (for passing to __tls_get_addr()). The 321 * instructions referencing this entry will be bound to the first 322 * of the two GOT entries. 323 * 324 * @tmndx(x): Allocate two contiguous entries in the GOT table to hold 325 * a Tls_index structure (for passing to __tls_get_addr()). The 326 * ti_offset field of the Tls_index will be set to 0 (zero) and the 327 * ti_module will be filled in at run-time. The call to 328 * __tls_get_addr() will return the starting offset of the dynamic 329 * TLS block. 330 * 331 * @dtpoff(x): calculate the tlsoffset relative to the TLS block. 332 * 333 * @tpoff(x): calculate the negative tlsoffset relative to the static 334 * TLS block. This value can be added to the thread-pointer to 335 * calculate the tls address. 336 * 337 * @dtpmod(x): calculate the module id of the object containing symbol x. 338 * 339 * The calculations in the CALCULATION column are assumed to have been performed 340 * before calling this function except for the addition of the addresses in the 341 * instructions. 342 * 343 * Upon successful completion of do_reloc() *value will be set to the 344 * 'bit-shifted' value that will be or'ed into memory. 345 */ 346 /* ARGSUSED5 */ 347 int 348 do_reloc(uchar_t rtype, uchar_t *off, Xword *value, const char *sym, 349 const char *file, void *lml) 350 { 351 Xword uvalue = 0; 352 Xword basevalue, sigbit_mask, sigfit_mask; 353 Xword corevalue = *value; 354 uchar_t bshift; 355 int field_size, re_flags; 356 const Rel_entry * rep; 357 358 rep = &reloc_table[rtype]; 359 bshift = rep->re_bshift; 360 field_size = rep->re_fsize; 361 re_flags = rep->re_flags; 362 sigbit_mask = S_MASK(rep->re_sigbits); 363 364 if ((re_flags & FLG_RE_SIGN) && sigbit_mask) { 365 /* 366 * sigfit_mask takes into account that a value 367 * might be signed and discards the signbit for 368 * comparison. 369 */ 370 sigfit_mask = S_MASK(rep->re_sigbits - 1); 371 } else 372 sigfit_mask = sigbit_mask; 373 374 if (field_size == 0) { 375 REL_ERR_UNIMPL(lml, file, sym, rtype); 376 return (0); 377 } 378 379 if (re_flags & FLG_RE_UNALIGN) { 380 int i; 381 uchar_t *dest = (uchar_t *)&basevalue; 382 383 /* 384 * Adjust the offset. 385 */ 386 /* LINTED */ 387 i = (int)(sizeof (Xword) - field_size); 388 if (i > 0) 389 dest += i; 390 391 basevalue = 0; 392 for (i = field_size - 1; i >= 0; i--) 393 dest[i] = off[i]; 394 } else { 395 if (((field_size == 2) && ((uintptr_t)off & 0x1)) || 396 ((field_size == 4) && ((uintptr_t)off & 0x3)) || 397 ((field_size == 8) && ((uintptr_t)off & 0x7))) { 398 REL_ERR_NONALIGN(lml, file, sym, rtype, (uintptr_t)off); 399 return (0); 400 } 401 switch (field_size) { 402 case 1: 403 basevalue = (Xword)*((uchar_t *)off); 404 break; 405 case 2: 406 /* LINTED */ 407 basevalue = (Xword)*((Half *)off); 408 break; 409 case 4: 410 /* LINTED */ 411 basevalue = (Xword)*((Word *)off); 412 break; 413 case 8: 414 /* LINTED */ 415 basevalue = (Xword)*((Xword *)off); 416 break; 417 default: 418 REL_ERR_UNNOBITS(lml, file, sym, rtype, 419 (rep->re_fsize * 8)); 420 return (0); 421 } 422 } 423 424 if (sigbit_mask) { 425 /* 426 * The WDISP16 relocation is an unusual one in that it's bits 427 * are not all contiguous. We have to selectivly pull them out. 428 */ 429 if (re_flags & FLG_RE_WDISP16) { 430 uvalue = ((basevalue & 0x300000) >> 6) | 431 (basevalue & 0x3fff); 432 basevalue &= ~0x303fff; 433 } else { 434 uvalue = sigbit_mask & basevalue; 435 basevalue &= ~sigbit_mask; 436 } 437 /* 438 * If value is signed make sure that we signextend the uvalue. 439 */ 440 if (re_flags & FLG_RE_SIGN) { 441 if (uvalue & (~sigbit_mask & sigfit_mask)) 442 uvalue |= ~sigbit_mask; 443 } 444 } else 445 uvalue = basevalue; 446 447 if (bshift) 448 uvalue <<= bshift; 449 450 uvalue += *value; 451 452 if (rep->re_mask && 453 ((rtype == R_SPARC_HIX22) || (rtype == R_SPARC_TLS_LE_HIX22))) 454 uvalue ^= rep->re_mask; 455 456 if (bshift) { 457 /* 458 * This is to check that we are not attempting to 459 * jump to a non-4 byte aligned address. 460 */ 461 if ((bshift == 2) && (uvalue & 0x3)) { 462 REL_ERR_LOSEBITS(lml, file, sym, rtype, uvalue, 2, off); 463 return (0); 464 } 465 466 if (re_flags & FLG_RE_SIGN) { 467 uvalue = (Sxword)uvalue >> bshift; 468 } else { 469 uvalue >>= bshift; 470 } 471 corevalue >>= bshift; 472 } 473 474 if ((rtype == R_SPARC_GOTDATA_HIX22) || 475 (rtype == R_SPARC_GOTDATA_OP_HIX22)) { 476 uvalue ^= ((Sxword)(*value) >> 31); 477 corevalue ^= ((Sxword)(*value) >> 31); 478 } 479 480 if (rep->re_mask && 481 (rtype != R_SPARC_HIX22) && (rtype != R_SPARC_TLS_LE_HIX22) && 482 (rtype != R_SPARC_GOTDATA_HIX22)) 483 uvalue &= rep->re_mask; 484 485 if ((rtype == R_SPARC_LOX10) || (rtype == R_SPARC_TLS_LE_LOX10)) { 486 uvalue |= 0x1c00; 487 corevalue |= 0x1c00; 488 } 489 490 if ((rtype == R_SPARC_GOTDATA_LOX10) || 491 (rtype == R_SPARC_GOTDATA_OP_LOX10)) { 492 uvalue |= ((Sxword)(*value) >> 31) & 0x1c00; 493 corevalue |= ((Sxword)(*value) >> 31) & 0x1c00; 494 } 495 496 497 if ((re_flags & FLG_RE_VERIFY) && sigbit_mask) { 498 if (((re_flags & FLG_RE_SIGN) && 499 (S_INRANGE((Sxword)uvalue, rep->re_sigbits - 1) == 0)) || 500 (!(re_flags & FLG_RE_SIGN) && 501 ((sigbit_mask & uvalue) != uvalue))) { 502 REL_ERR_NOFIT(lml, file, sym, rtype, uvalue); 503 return (0); 504 } 505 } 506 507 if (sigbit_mask) { 508 /* 509 * Again the R_SPARC_WDISP16 relocation takes special 510 * processing because of its non-continguous bits. 511 */ 512 if (re_flags & FLG_RE_WDISP16) 513 uvalue = ((uvalue & 0xc000) << 6) | 514 (uvalue & 0x3fff); 515 else 516 uvalue &= sigbit_mask; 517 /* 518 * Combine value back with original word 519 */ 520 uvalue |= basevalue; 521 } 522 *value = corevalue; 523 524 if (re_flags & FLG_RE_UNALIGN) { 525 int i; 526 uchar_t *src = (uchar_t *)&uvalue; 527 528 /* 529 * Adjust the offset. 530 */ 531 /* LINTED */ 532 i = (int)(sizeof (Xword) - field_size); 533 if (i > 0) 534 src += i; 535 536 for (i = field_size - 1; i >= 0; i--) 537 off[i] = src[i]; 538 } else { 539 switch (rep->re_fsize) { 540 case 1: 541 /* LINTED */ 542 *((uchar_t *)off) = (uchar_t)uvalue; 543 break; 544 case 2: 545 /* LINTED */ 546 *((Half *)off) = (Half)uvalue; 547 break; 548 case 4: 549 /* LINTED */ 550 *((Word *)off) = uvalue; 551 break; 552 case 8: 553 /* LINTED */ 554 *((Xword *)off) = uvalue; 555 break; 556 default: 557 /* 558 * To keep chkmsg() happy: MSG_INTL(MSG_REL_UNSUPSZ) 559 */ 560 REL_ERR_UNSUPSZ(lml, file, sym, rtype, rep->re_fsize); 561 return (0); 562 } 563 } 564 return (1); 565 } 566