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 #ifndef _RELOC_DOT_H 29 #define _RELOC_DOT_H 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #if defined(_KERNEL) 34 #include <sys/machelf.h> 35 #include <sys/bootconf.h> 36 #include <sys/kobj.h> 37 #include <sys/kobj_impl.h> 38 #else 39 #include <machdep.h> 40 #include <conv.h> 41 #endif /* _KERNEL */ 42 43 #include <relmach.h> 44 45 #ifdef __cplusplus 46 extern "C" { 47 #endif 48 49 /* 50 * Global include file for relocation common code. 51 * 52 * Flags for reloc_entry->re_flags 53 */ 54 #define FLG_RE_NOTREL 0x00000000 55 #define FLG_RE_GOTADD 0x00000001 /* create a GOT entry */ 56 #define FLG_RE_GOTREL 0x00000002 /* GOT based */ 57 #define FLG_RE_GOTPC 0x00000004 /* GOT - P */ 58 #define FLG_RE_GOTOPINS 0x00000008 /* GOTOP instruction */ 59 #define FLG_RE_PCREL 0x00000010 60 #define FLG_RE_PLTREL 0x00000020 61 #define FLG_RE_VERIFY 0x00000040 /* verify value fits */ 62 #define FLG_RE_UNALIGN 0x00000080 /* offset is not aligned */ 63 #define FLG_RE_WDISP16 0x00000100 /* funky sparc DISP16 rel */ 64 #define FLG_RE_SIGN 0x00000200 /* value is signed */ 65 #define FLG_RE_ADDRELATIVE 0x00000400 /* RELATIVE relocation */ 66 /* required for non-fixed */ 67 /* objects */ 68 #define FLG_RE_EXTOFFSET 0x00000800 /* extra offset required */ 69 #define FLG_RE_REGISTER 0x00001000 /* relocation initializes */ 70 /* a REGISTER by OLO10 */ 71 #define FLG_RE_NOTSUP 0x00010000 /* relocation not supported */ 72 73 #define FLG_RE_SEGREL 0x00040000 /* segment relative */ 74 #define FLG_RE_SECREL 0x00080000 /* section relative */ 75 #define FLG_RE_TLSINS 0x00100000 /* TLS instructino rel */ 76 #define FLG_RE_TLSGD 0x00200000 /* TLS GD relocation */ 77 #define FLG_RE_TLSLD 0x00400000 /* TLS LD relocation */ 78 #define FLG_RE_TLSIE 0x00800000 /* TLS IE relocation */ 79 #define FLG_RE_TLSLE 0x01000000 /* TLS LE relocation */ 80 #define FLG_RE_LOCLBND 0x02000000 /* relocation must bind */ 81 /* locally */ 82 83 /* 84 * Macros for testing relocation table flags 85 */ 86 extern const Rel_entry reloc_table[]; 87 88 #define IS_PLT(X) ((reloc_table[(X)].re_flags & \ 89 FLG_RE_PLTREL) != 0) 90 #define IS_GOT_RELATIVE(X) ((reloc_table[(X)].re_flags & \ 91 FLG_RE_GOTADD) != 0) 92 #define IS_GOT_PC(X) ((reloc_table[(X)].re_flags & \ 93 FLG_RE_GOTPC) != 0) 94 #define IS_GOTPCREL(X) ((reloc_table[(X)].re_flags & \ 95 (FLG_RE_GOTPC | FLG_RE_GOTADD)) == \ 96 (FLG_RE_GOTPC | FLG_RE_GOTADD)) 97 #define IS_GOT_BASED(X) ((reloc_table[(X)].re_flags & \ 98 FLG_RE_GOTREL) != 0) 99 #define IS_GOT_INS(X) ((reloc_table[(X)].re_flags &\ 100 FLG_RE_GOTOPINS) != 0) 101 #define IS_PC_RELATIVE(X) ((reloc_table[(X)].re_flags & \ 102 FLG_RE_PCREL) != 0) 103 #define IS_ADD_RELATIVE(X) ((reloc_table[(X)].re_flags & \ 104 FLG_RE_ADDRELATIVE) != 0) 105 #define IS_REGISTER(X) ((reloc_table[(X)].re_flags & \ 106 FLG_RE_REGISTER) != 0) 107 #define IS_FORMOFF(X) ((reloc_table[(X)].re_flags &\ 108 FLG_RE_FRMOFF) != 0) 109 #define IS_NOTSUP(X) ((reloc_table[(X)].re_flags &\ 110 FLG_RE_NOTSUP) != 0) 111 #define IS_SEG_RELATIVE(X) ((reloc_table[(X)].re_flags &\ 112 FLG_RE_SEGREL) != 0) 113 #define IS_EXTOFFSET(X) ((reloc_table[(X)].re_flags &\ 114 FLG_RE_EXTOFFSET) != 0) 115 #define IS_SEC_RELATIVE(X) ((reloc_table[(X)].re_flags &\ 116 FLG_RE_SECREL) != 0) 117 #define IS_TLS_INS(X) ((reloc_table[(X)].re_flags &\ 118 FLG_RE_TLSINS) != 0) 119 #define IS_TLS_GD(X) ((reloc_table[(X)].re_flags &\ 120 FLG_RE_TLSGD) != 0) 121 #define IS_TLS_LD(X) ((reloc_table[(X)].re_flags &\ 122 FLG_RE_TLSLD) != 0) 123 #define IS_TLS_IE(X) ((reloc_table[(X)].re_flags &\ 124 FLG_RE_TLSIE) != 0) 125 #define IS_TLS_LE(X) ((reloc_table[(X)].re_flags &\ 126 FLG_RE_TLSLE) != 0) 127 #define IS_TLS(X) ((reloc_table[(X)].re_flags &\ 128 (FLG_RE_TLSINS|FLG_RE_TLSGD| \ 129 FLG_RE_TLSLD|FLG_RE_TLSIE| \ 130 FLG_RE_TLSLE)) != 0) 131 #define IS_LOCALBND(X) ((reloc_table[(X)].re_flags &\ 132 FLG_RE_LOCLBND) != 0) 133 134 /* 135 * Functions. 136 */ 137 extern int do_reloc(uchar_t, uchar_t *, Xword *, const char *, 138 const char *); 139 140 /* 141 * Provide a macro to select the appropriate convension routine for this 142 * architecture. 143 */ 144 #if defined(__amd64) 145 #define CONV_RELOC_TYPE conv_reloc_amd64_type_str 146 #elif defined(__i386) 147 #define CONV_RELOC_TYPE conv_reloc_386_type_str 148 #elif defined(__sparc) 149 #define CONV_RELOC_TYPE conv_reloc_SPARC_type_str 150 #else 151 #error platform not defined! 152 #endif 153 154 155 #if defined(_KERNEL) 156 /* 157 * These are macro's that are only needed for krtld. Many of these are already 158 * defined in the sgs/include files referenced by ld and rtld 159 */ 160 #define S_MASK(n) ((1l << (n)) - 1l) 161 #define S_INRANGE(v, n) (((-(1l << (n)) - 1l) < (v)) && ((v) < (1l << (n)))) 162 163 /* 164 * Message strings used by doreloc(). 165 */ 166 #define MSG_STR_UNKNOWN "(unknown)" 167 168 #define MSG_REL_PREGEN "relocation error: %s: " 169 #define MSG_REL_PREFIL "relocation error: file %s: " 170 #define MSG_REL_FILE "file %s: " 171 #define MSG_REL_SYM "symbol %s: " 172 #define MSG_REL_VALUE "value 0x%llx " 173 #define MSG_REL_LOSEBITS "loses %d bits at " 174 175 #define MSG_REL_UNIMPL "unimplemented relocation type: %d" 176 #define MSG_REL_UNSUPSZ "offset size (%d bytes) is not supported" 177 #define MSG_REL_NONALIGN "offset 0x%llx is non-aligned" 178 #define MSG_REL_UNNOBITS "unsupported number of bits: %d" 179 #define MSG_REL_OFFSET "offset 0x%llx" 180 #define MSG_REL_NOFIT "value 0x%llx does not fit" 181 182 extern const char *conv_reloc_386_type_str(uint_t); 183 extern const char *conv_reloc_amd64_type_str(uint_t); 184 extern const char *conv_reloc_SPARC_type_str(uint_t); 185 186 /* 187 * Note: Related to bug 4128755, dlerror() only keeps track of a single error 188 * string, and therefore must have errors reported through a single eprintf() 189 * call. The kernel's _kobj_printf is somewhat more limited, and must receive 190 * messages with only one arguement to the format string. The following macros 191 * are to straighted all this out because krtld and rtld share do_reloc(). 192 */ 193 #define REL_ERR_UNIMPL(file, sym, rtype) \ 194 _kobj_printf(ops, MSG_REL_PREFIL, (file)); \ 195 _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ 196 _kobj_printf(ops, MSG_REL_UNIMPL, (int)(rtype)) 197 198 #define REL_ERR_UNSUPSZ(file, sym, rtype, size) \ 199 _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ 200 _kobj_printf(ops, MSG_REL_FILE, (file)); \ 201 _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ 202 _kobj_printf(ops, MSG_REL_UNSUPSZ, (int)(size)) 203 204 #define REL_ERR_NONALIGN(file, sym, rtype, off) \ 205 _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ 206 _kobj_printf(ops, MSG_REL_FILE, (file)); \ 207 _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ 208 _kobj_printf(ops, MSG_REL_NONALIGN, EC_OFF((off))) 209 210 #define REL_ERR_UNNOBITS(file, sym, rtype, nbits) \ 211 _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ 212 _kobj_printf(ops, MSG_REL_FILE, (file)); \ 213 _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ 214 _kobj_printf(ops, MSG_REL_UNNOBITS, (nbits)) 215 216 #define REL_ERR_LOSEBITS(file, sym, rtype, uvalue, nbits, off) \ 217 _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ 218 _kobj_printf(ops, MSG_REL_FILE, (file)); \ 219 _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ 220 _kobj_printf(ops, MSG_REL_VALUE, EC_XWORD((uvalue))); \ 221 _kobj_printf(ops, MSG_REL_LOSEBITS, (int)(nbits)); \ 222 _kobj_printf(ops, MSG_REL_OFFSET, EC_ADDR((off))) 223 224 #define REL_ERR_NOFIT(file, sym, rtype, uvalue) \ 225 _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ 226 _kobj_printf(ops, MSG_REL_FILE, (file)); \ 227 _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ 228 _kobj_printf(ops, MSG_REL_NOFIT, EC_XWORD((uvalue))) 229 230 231 #else /* !_KERNEL */ 232 233 extern const char *demangle(const char *); 234 235 #define REL_ERR_UNIMPL(file, sym, rtype) \ 236 (eprintf(ERR_FATAL, MSG_INTL(MSG_REL_UNIMPL), (file), \ 237 ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), (int)(rtype))) 238 239 #define REL_ERR_UNSUPSZ(file, sym, rtype, size) \ 240 (eprintf(ERR_FATAL, MSG_INTL(MSG_REL_UNSUPSZ), \ 241 CONV_RELOC_TYPE((rtype)), (file), \ 242 ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), (int)(size))) 243 244 #define REL_ERR_NONALIGN(file, sym, rtype, off) \ 245 (eprintf(ERR_FATAL, MSG_INTL(MSG_REL_NONALIGN), \ 246 CONV_RELOC_TYPE((rtype)), (file), \ 247 ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), EC_OFF((off)))) 248 249 #define REL_ERR_UNNOBITS(file, sym, rtype, nbits) \ 250 (eprintf(ERR_FATAL, MSG_INTL(MSG_REL_UNNOBITS), \ 251 CONV_RELOC_TYPE((rtype)), (file), \ 252 ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), (nbits))) 253 254 #define REL_ERR_LOSEBITS(file, sym, rtype, uvalue, nbits, off) \ 255 (eprintf(ERR_FATAL, MSG_INTL(MSG_REL_LOSEBITS), \ 256 CONV_RELOC_TYPE((rtype)), (file), \ 257 ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), \ 258 EC_XWORD((uvalue)), (nbits), EC_ADDR((off)))) 259 260 #define REL_ERR_NOFIT(file, sym, rtype, uvalue) \ 261 (eprintf(ERR_FATAL, MSG_INTL(MSG_REL_NOFIT), \ 262 CONV_RELOC_TYPE((rtype)), (file), \ 263 ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), \ 264 EC_XWORD((uvalue)))) 265 266 #endif /* _KERNEL */ 267 268 #ifdef __cplusplus 269 } 270 #endif 271 272 #endif /* _RELOC_DOT_H */ 273