Mercurial > illumos > illumos-gate
annotate usr/src/cmd/sgs/include/sparc/machdep_sparc.h @ 13004:92dfdb3a48cc
6935867 .dynamic could be readonly in sharable objects
| author | Rod Evans <Rod.Evans@Oracle.COM> |
|---|---|
| date | Mon, 02 Aug 2010 14:04:48 -0700 |
| parents | d7ef53deac3f |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * CDDL HEADER START | |
| 3 * | |
| 4 * The contents of this file are subject to the terms of the | |
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5 * Common Development and Distribution License (the "License"). |
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6 * You may not use this file except in compliance with the License. |
| 0 | 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 */ | |
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21 |
| 0 | 22 /* |
| 23 * Copyright (c) 1988 AT&T | |
| 24 * All Rights Reserved | |
| 25 * | |
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26 * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 27 * |
| 28 * Global include file for all sgs SPARC machine dependent macros, constants | |
| 29 * and declarations. | |
| 30 */ | |
| 31 | |
| 6206 | 32 #ifndef _MACHDEP_SPARC_H |
| 33 #define _MACHDEP_SPARC_H | |
| 0 | 34 |
| 35 #include <link.h> | |
| 36 #include <sys/machelf.h> | |
| 37 | |
| 38 #ifdef __cplusplus | |
| 39 extern "C" { | |
| 40 #endif | |
| 41 | |
| 42 /* | |
| 43 * Elf header information. | |
| 44 */ | |
| 6206 | 45 #define M_MACH_32 EM_SPARC |
| 46 #define M_MACH_64 EM_SPARCV9 | |
| 47 | |
| 0 | 48 #ifdef _ELF64 |
| 49 #define M_MACH EM_SPARCV9 | |
| 50 #define M_CLASS ELFCLASS64 | |
| 51 #else | |
| 52 #define M_MACH EM_SPARC | |
| 53 #define M_CLASS ELFCLASS32 | |
| 54 #endif | |
| 55 #define M_MACHPLUS EM_SPARC32PLUS | |
| 56 #define M_DATA ELFDATA2MSB | |
| 57 #define M_FLAGSPLUS EF_SPARC_32PLUS | |
| 58 | |
| 59 /* | |
| 60 * Page boundary Macros: truncate to previous page boundary and round to | |
| 61 * next page boundary (refer to generic macros in ../sgs.h also). | |
| 62 */ | |
| 63 #define M_PTRUNC(X) ((X) & ~(syspagsz - 1)) | |
| 64 #define M_PROUND(X) (((X) + syspagsz - 1) & ~(syspagsz - 1)) | |
| 65 | |
| 66 /* | |
| 67 * Segment boundary macros: truncate to previous segment boundary and round | |
| 68 * to next page boundary. | |
| 69 */ | |
| 70 #ifndef M_SEGSIZE | |
| 71 #define M_SEGSIZE ELF_SPARC_MAXPGSZ | |
| 72 #endif | |
| 73 #define M_STRUNC(X) ((X) & ~(M_SEGSIZE - 1)) | |
| 74 #define M_SROUND(X) (((X) + M_SEGSIZE - 1) & ~(M_SEGSIZE - 1)) | |
| 75 | |
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76 /* |
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77 * Relocation type macro. |
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78 */ |
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79 #define M_RELOC Rela |
| 0 | 80 |
| 81 /* | |
| 82 * TLS static segments must be rounded to the following requirements, | |
| 83 * due to libthread stack allocation. | |
| 84 */ | |
| 85 #if defined(_ELF64) | |
| 86 #define M_TLSSTATALIGN 0x10 | |
| 87 #else | |
| 2647 | 88 #define M_TLSSTATALIGN 0x08 |
| 0 | 89 #endif |
| 90 | |
| 91 /* | |
| 92 * Instruction encodings. | |
| 93 */ | |
| 94 #define M_SAVESP64 0x9de3bfc0 /* save %sp, -64, %sp */ | |
| 95 #define M_CALL 0x40000000 | |
| 96 #define M_JMPL 0x81c06000 /* jmpl %g1 + simm13, %g0 */ | |
| 97 #define M_SETHIG0 0x01000000 /* sethi %hi(val), %g0 */ | |
| 98 #define M_SETHIG1 0x03000000 /* sethi %hi(val), %g1 */ | |
| 99 #define M_STO7G1IM 0xde206000 /* st %o7,[%g1 + %lo(val)] */ | |
| 100 #define M_SUBFPSPG1 0x8227800e /* sub %fp,%sp,%g1 */ | |
| 101 #define M_NOP 0x01000000 /* sethi 0, %o0 (nop) */ | |
| 102 #define M_BA_A 0x30800000 /* ba,a */ | |
| 103 #define M_BA_A_PT 0x30480000 /* ba,a %icc, <dst> */ | |
| 104 #define M_MOVO7TOG1 0x8210000f /* mov %o7, %g1 */ | |
| 105 #define M_MOVO7TOG5 0x8a10000f /* mov %o7, %g5 */ | |
| 106 #define M_MOVI7TOG1 0x8210001f /* mov %i7, %g1 */ | |
| 107 #define M_BA_A_XCC 0x30680000 /* ba,a %xcc */ | |
| 108 #define M_JMPL_G5G0 0x81c16000 /* jmpl %g5 + 0, %g0 */ | |
| 109 #define M_XNOR_G5G1 0x82396000 /* xnor %g5, 0, %g1 */ | |
| 110 | |
| 111 | |
| 112 #define M_BIND_ADJ 4 /* adjustment for end of */ | |
| 113 /* elf_rtbndr() address */ | |
| 114 | |
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115 /* transition flags for got sizing */ |
| 0 | 116 #define M_GOT_LARGE (Sword)(-M_GOT_MAXSMALL - 1) |
| 117 #define M_GOT_SMALL (Sword)(-M_GOT_MAXSMALL - 2) | |
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118 #define M_GOT_MIXED (Sword)(-M_GOT_MAXSMALL - 3) |
| 0 | 119 |
| 120 /* | |
| 121 * Other machine dependent entities | |
| 122 */ | |
| 123 #ifdef _ELF64 | |
| 124 #define M_SEGM_ALIGN ELF_SPARCV9_MAXPGSZ | |
| 125 /* | |
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126 * Put default 64-bit programs above 4 gigabytes to help insure correctness, so |
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127 * that any 64-bit programs that truncate pointers will fault now instead of |
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128 * corrupting itself and dying mysteriously. 64-bit programs can also be |
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129 * restricted to a 32-bit address space (SF1_SUNW_ADDR32), and these programs |
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130 * provide an alternative origin. |
| 0 | 131 */ |
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132 #define M_SEGM_ORIGIN (Addr)0x100000000ULL /* default 1st segment origin */ |
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133 #define M_SEGM_AORIGIN (Addr)0x100000ULL /* alternative 1st segment */ |
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134 /* origin */ |
| 0 | 135 #else |
| 136 #define M_SEGM_ALIGN ELF_SPARC_MAXPGSZ | |
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137 #define M_SEGM_ORIGIN (Addr)0x10000 /* default 1st segment origin */ |
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138 #define M_SEGM_AORIGIN M_SEGM_ORIGIN /* alternative 1st segment */ |
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139 /* origin */ |
| 0 | 140 #endif |
| 141 | |
| 142 /* | |
| 143 * Make common relocation information transparent to the common code | |
| 144 */ | |
| 145 #define M_REL_DT_TYPE DT_RELA /* .dynamic entry */ | |
| 146 #define M_REL_DT_SIZE DT_RELASZ /* .dynamic entry */ | |
| 147 #define M_REL_DT_ENT DT_RELAENT /* .dynamic entry */ | |
| 148 #define M_REL_DT_COUNT DT_RELACOUNT /* .dynamic entry */ | |
| 149 #define M_REL_SHT_TYPE SHT_RELA /* section header type */ | |
| 150 #define M_REL_ELF_TYPE ELF_T_RELA /* data buffer type */ | |
| 151 | |
| 152 /* | |
| 153 * Make common relocation types transparent to the common code | |
| 154 */ | |
| 155 #define M_R_NONE R_SPARC_NONE | |
| 156 #define M_R_GLOB_DAT R_SPARC_GLOB_DAT | |
| 157 #define M_R_COPY R_SPARC_COPY | |
| 158 #define M_R_RELATIVE R_SPARC_RELATIVE | |
| 159 #define M_R_JMP_SLOT R_SPARC_JMP_SLOT | |
| 160 #define M_R_REGISTER R_SPARC_REGISTER | |
| 161 #define M_R_FPTR R_SPARC_NONE | |
| 162 #define M_R_NUM R_SPARC_NUM | |
| 163 | |
| 164 #ifdef _ELF64 | |
| 165 #define M_R_ARRAYADDR R_SPARC_64 | |
| 166 #define M_R_DTPMOD R_SPARC_TLS_DTPMOD64 | |
| 167 #define M_R_DTPOFF R_SPARC_TLS_DTPOFF64 | |
| 168 #define M_R_TPOFF R_SPARC_TLS_TPOFF64 | |
| 169 #else /* _ELF32 */ | |
| 170 #define M_R_ARRAYADDR R_SPARC_32 | |
| 171 #define M_R_DTPMOD R_SPARC_TLS_DTPMOD32 | |
| 172 #define M_R_DTPOFF R_SPARC_TLS_DTPOFF32 | |
| 173 #define M_R_TPOFF R_SPARC_TLS_TPOFF32 | |
| 174 #endif /* _ELF64 */ | |
| 175 | |
| 176 | |
| 177 /* | |
| 178 * Make register symbols transparent to common code | |
| 179 */ | |
| 180 #define M_DT_REGISTER DT_SPARC_REGISTER | |
| 181 | |
| 182 /* | |
| 183 * Make plt section information transparent to the common code. | |
| 184 */ | |
| 185 #define M_PLT_SHF_FLAGS (SHF_ALLOC | SHF_WRITE | SHF_EXECINSTR) | |
| 186 | |
| 187 /* | |
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188 * Make default data segment and stack flags transparent to the common code. |
| 0 | 189 */ |
| 190 #define M_DATASEG_PERM (PF_R | PF_W | PF_X) | |
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191 #ifdef _ELF64 |
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192 #define M_STACK_PERM (PF_R | PF_W) |
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193 #else |
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194 #define M_STACK_PERM (PF_R | PF_W | PF_X) |
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195 #endif |
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196 |
| 0 | 197 /* |
| 198 * Define a set of identifies for special sections. These allow the sections | |
| 199 * to be ordered within the output file image. These values should be | |
| 200 * maintained consistently, where appropriate, in each platform specific header | |
| 201 * file. | |
| 202 * | |
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203 * - null identifies that this section does not need to be added to the |
| 0 | 204 * output image (ie. shared object sections or sections we're going to |
| 205 * recreate (sym tables, string tables, relocations, etc.)). | |
| 206 * | |
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207 * - any user defined section will be first in the associated segment. |
| 0 | 208 * |
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209 * - interp and capabilities sections are next, as these are accessed |
| 0 | 210 * immediately the first page of the image is mapped. |
| 211 * | |
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212 * - objects that do not provide an interp normally have a read-only |
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213 * .dynamic section that comes next (in this case, there is no need to |
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214 * update a DT_DEBUG entry at runtime). |
| 0 | 215 * |
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216 * - the syminfo, hash, dynsym, dynstr and rel's are grouped together as |
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217 * these will all be accessed together by ld.so.1 to perform relocations. |
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218 * |
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219 * - the got, dynamic, and plt are grouped together as these may also be |
| 0 | 220 * accessed first by ld.so.1 to perform relocations, fill in DT_DEBUG |
| 221 * (executables only), and .plt[0]. | |
| 222 * | |
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223 * - unknown sections (stabs, comments, etc.) go at the end. |
| 0 | 224 * |
| 225 * Note that .tlsbss/.bss are given the largest identifiers. This insures that | |
| 226 * if any unknown sections become associated to the same segment as the .bss, | |
| 227 * the .bss sections are always the last section in the segment. | |
| 228 */ | |
| 229 #define M_ID_NULL 0x00 | |
| 230 #define M_ID_USER 0x01 | |
| 231 | |
| 232 #define M_ID_INTERP 0x02 /* SHF_ALLOC */ | |
| 233 #define M_ID_CAP 0x03 | |
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234 #define M_ID_CAPINFO 0x04 |
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235 #define M_ID_CAPCHAIN 0x05 |
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236 |
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237 #define M_ID_DYNAMIC 0x06 /* if no .interp, then no */ |
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238 /* DT_DEBUG is required */ |
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239 #define M_ID_UNWINDHDR 0x07 |
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240 #define M_ID_UNWIND 0x08 |
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241 |
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242 #define M_ID_SYMINFO 0x09 |
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243 #define M_ID_HASH 0x0a |
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244 #define M_ID_LDYNSYM 0x0b /* always right before DYNSYM */ |
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245 #define M_ID_DYNSYM 0x0c |
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246 #define M_ID_DYNSTR 0x0d |
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247 #define M_ID_VERSION 0x0e |
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248 #define M_ID_DYNSORT 0x0f |
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249 #define M_ID_REL 0x10 |
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250 #define M_ID_ARRAY 0x11 |
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251 #define M_ID_TEXT 0x12 /* SHF_ALLOC + SHF_EXECINSTR */ |
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252 #define M_ID_DATA 0x20 |
| 0 | 253 |
| 254 /* M_ID_USER 0x01 dual entry - listed above */ | |
| 255 #define M_ID_GOTDATA 0x02 /* SHF_ALLOC + SHF_WRITE */ | |
| 256 #define M_ID_GOT 0x03 | |
| 257 #define M_ID_PLT 0x04 | |
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258 /* M_ID_DYNAMIC 0x06 dual entry - listed above */ |
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259 /* M_ID_UNWIND 0x08 dual entry - listed above */ |
| 0 | 260 |
| 261 #define M_ID_UNKNOWN 0xfc /* just before TLS */ | |
| 262 | |
| 263 #define M_ID_TLS 0xfd /* just before bss */ | |
| 264 #define M_ID_TLSBSS 0xfe | |
| 265 #define M_ID_BSS 0xff | |
| 266 | |
| 267 #define M_ID_SYMTAB_NDX 0x02 /* ! SHF_ALLOC */ | |
| 268 #define M_ID_SYMTAB 0x03 | |
| 269 #define M_ID_STRTAB 0x04 | |
| 270 #define M_ID_DYNSYM_NDX 0x05 | |
| 271 #define M_ID_NOTE 0x06 | |
| 272 | |
| 6206 | 273 |
| 0 | 274 #ifdef __cplusplus |
| 275 } | |
| 276 #endif | |
| 277 | |
| 6206 | 278 #endif /* _MACHDEP_SPARC_H */ |