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 (c) 1988 AT&T 24 * All Rights Reserved 25 * 26 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 * 29 * Global include file for all sgs SPARC machine dependent macros, constants 30 * and declarations. 31 */ 32 33 #ifndef _MACHDEP_SPARC_H 34 #define _MACHDEP_SPARC_H 35 36 #pragma ident "%Z%%M% %I% %E% SMI" 37 38 #include <link.h> 39 #include <sys/machelf.h> 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 /* 46 * Elf header information. 47 */ 48 #define M_MACH_32 EM_SPARC 49 #define M_MACH_64 EM_SPARCV9 50 51 #ifdef _ELF64 52 #define M_MACH EM_SPARCV9 53 #define M_CLASS ELFCLASS64 54 #else 55 #define M_MACH EM_SPARC 56 #define M_CLASS ELFCLASS32 57 #endif 58 #define M_MACHPLUS EM_SPARC32PLUS 59 #define M_DATA ELFDATA2MSB 60 #define M_FLAGSPLUS EF_SPARC_32PLUS 61 62 /* 63 * Page boundary Macros: truncate to previous page boundary and round to 64 * next page boundary (refer to generic macros in ../sgs.h also). 65 */ 66 #define M_PTRUNC(X) ((X) & ~(syspagsz - 1)) 67 #define M_PROUND(X) (((X) + syspagsz - 1) & ~(syspagsz - 1)) 68 69 /* 70 * Segment boundary macros: truncate to previous segment boundary and round 71 * to next page boundary. 72 */ 73 #ifndef M_SEGSIZE 74 #define M_SEGSIZE ELF_SPARC_MAXPGSZ 75 #endif 76 #define M_STRUNC(X) ((X) & ~(M_SEGSIZE - 1)) 77 #define M_SROUND(X) (((X) + M_SEGSIZE - 1) & ~(M_SEGSIZE - 1)) 78 79 80 /* 81 * TLS static segments must be rounded to the following requirements, 82 * due to libthread stack allocation. 83 */ 84 #if defined(_ELF64) 85 #define M_TLSSTATALIGN 0x10 86 #else 87 #define M_TLSSTATALIGN 0x08 88 #endif 89 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 */ 114 115 116 /* 117 * Plt and Got information; the first few .got and .plt entries are reserved 118 * PLT[0] jump to dynamic linker 119 * GOT[0] address of _DYNAMIC 120 */ 121 #define M_PLT_INSSIZE 4 /* single plt instruction size */ 122 #define M_GOT_XDYNAMIC 0 /* got index for _DYNAMIC */ 123 #define M_GOT_XNumber 1 /* reserved no. of got entries */ 124 125 /* 126 * ELF32 bit PLT constants 127 */ 128 #define M32_PLT_ENTSIZE 12 /* 32bit plt entry size in bytes */ 129 130 /* 131 * ELF64 bit PLT constants 132 */ 133 #define M64_PLT_NEARPLTS 0x8000 /* # of NEAR PLTS we can have */ 134 #define M64_PLT_ENTSIZE 32 /* plt entry size in bytes */ 135 #define M64_PLT_FENTSIZE 24 /* size of far plt is 6 instructions */ 136 /* x 4bytes */ 137 #define M64_PLT_PSIZE 8 /* size of PLTP pointer */ 138 #define M64_PLT_FBLKCNTS 160 /* # of plts in far PLT blocks */ 139 #define M64_PLT_FBLOCKSZ (M64_PLT_FBLKCNTS *\ 140 M64_PLT_ENTSIZE) /* size of far PLT block */ 141 142 143 #ifdef _ELF64 144 #define M_PLT_ENTSIZE M64_PLT_ENTSIZE /* plt entry size in bytes */ 145 #define M_PLT_XNumber 4 /* reserved no. of plt entries */ 146 #define M_PLT_ALIGN 256 /* alignment of .plt section */ 147 #define M_PLT_RESERVSZ (M_PLT_XNumber * \ 148 M_PLT_ENTSIZE) /* first 4 plt's reserved */ 149 #define M_GOT_ENTSIZE 8 /* got entry size in bytes */ 150 #define M_GOT_MAXSMALL 1024 /* maximum no. of small gots */ 151 #else /* Elf32 */ 152 #define M_PLT_ENTSIZE M32_PLT_ENTSIZE /* plt entry size in bytes */ 153 #define M_PLT_XNumber 4 /* reserved no. of plt entries */ 154 #define M_PLT_ALIGN M_WORD_ALIGN /* alignment of .plt section */ 155 #define M_PLT_RESERVSZ (M_PLT_XNumber * \ 156 M_PLT_ENTSIZE) /* first 4 plt's reserved */ 157 #define M_GOT_ENTSIZE 4 /* got entry size in bytes */ 158 #define M_GOT_MAXSMALL 2048 /* maximum no. of small gots */ 159 #endif /* _ELF64 */ 160 /* transition flags for got sizing */ 161 #define M_GOT_LARGE (Sword)(-M_GOT_MAXSMALL - 1) 162 #define M_GOT_SMALL (Sword)(-M_GOT_MAXSMALL - 2) 163 #define M_GOT_MIXED (Sword)(-M_GOT_MAXSMALL - 3) 164 165 166 /* 167 * Other machine dependent entities 168 */ 169 #ifdef _ELF64 170 #define M_SEGM_ALIGN ELF_SPARCV9_MAXPGSZ 171 /* 172 * Put 64-bit programs above 4 gigabytes to help insure correctness, 173 * so any 64-bit programs that truncate pointers will fault now instead of 174 * corrupting itself and dying mysteriously. 175 */ 176 #define M_SEGM_ORIGIN (Addr)0x100000000ULL /* default first segment offset */ 177 #define M_WORD_ALIGN 8 178 #else 179 #define M_SEGM_ALIGN ELF_SPARC_MAXPGSZ 180 #define M_SEGM_ORIGIN (Addr)0x10000 /* default first segment offset */ 181 #define M_WORD_ALIGN 4 182 #endif 183 184 /* 185 * Make common relocation information transparent to the common code 186 */ 187 #define M_REL_DT_TYPE DT_RELA /* .dynamic entry */ 188 #define M_REL_DT_SIZE DT_RELASZ /* .dynamic entry */ 189 #define M_REL_DT_ENT DT_RELAENT /* .dynamic entry */ 190 #define M_REL_DT_COUNT DT_RELACOUNT /* .dynamic entry */ 191 #define M_REL_SHT_TYPE SHT_RELA /* section header type */ 192 #define M_REL_ELF_TYPE ELF_T_RELA /* data buffer type */ 193 194 /* 195 * Make common relocation types transparent to the common code 196 */ 197 #define M_R_NONE R_SPARC_NONE 198 #define M_R_GLOB_DAT R_SPARC_GLOB_DAT 199 #define M_R_COPY R_SPARC_COPY 200 #define M_R_RELATIVE R_SPARC_RELATIVE 201 #define M_R_JMP_SLOT R_SPARC_JMP_SLOT 202 #define M_R_REGISTER R_SPARC_REGISTER 203 #define M_R_FPTR R_SPARC_NONE 204 #define M_R_NUM R_SPARC_NUM 205 206 #ifdef _ELF64 207 #define M_R_ARRAYADDR R_SPARC_64 208 #define M_R_DTPMOD R_SPARC_TLS_DTPMOD64 209 #define M_R_DTPOFF R_SPARC_TLS_DTPOFF64 210 #define M_R_TPOFF R_SPARC_TLS_TPOFF64 211 #else /* _ELF32 */ 212 #define M_R_ARRAYADDR R_SPARC_32 213 #define M_R_DTPMOD R_SPARC_TLS_DTPMOD32 214 #define M_R_DTPOFF R_SPARC_TLS_DTPOFF32 215 #define M_R_TPOFF R_SPARC_TLS_TPOFF32 216 #endif /* _ELF64 */ 217 218 219 /* 220 * Make register symbols transparent to common code 221 */ 222 #define M_DT_REGISTER DT_SPARC_REGISTER 223 224 /* 225 * PLTRESERVE is not relevant on sparc 226 */ 227 #define M_DT_PLTRESERVE 0xffffffff 228 229 230 /* 231 * Make plt section information transparent to the common code. 232 */ 233 #define M_PLT_SHF_FLAGS (SHF_ALLOC | SHF_WRITE | SHF_EXECINSTR) 234 235 /* 236 * Make data segment information transparent to the common code. 237 */ 238 #define M_DATASEG_PERM (PF_R | PF_W | PF_X) 239 240 /* 241 * Define a set of identifies for special sections. These allow the sections 242 * to be ordered within the output file image. These values should be 243 * maintained consistently, where appropriate, in each platform specific header 244 * file. 245 * 246 * o null identifies that this section does not need to be added to the 247 * output image (ie. shared object sections or sections we're going to 248 * recreate (sym tables, string tables, relocations, etc.)). 249 * 250 * o any user defined section will be first in the associated segment. 251 * 252 * o interp and capabilities sections are next, as these are accessed 253 * immediately the first page of the image is mapped. 254 * 255 * o the syminfo, hash, dynsym, dynstr and rel's are grouped together as 256 * these will all be accessed first by ld.so.1 to perform relocations. 257 * 258 * o the got, dynamic, and plt are grouped together as these may also be 259 * accessed first by ld.so.1 to perform relocations, fill in DT_DEBUG 260 * (executables only), and .plt[0]. 261 * 262 * o unknown sections (stabs, comments etc.) go at the end. 263 * 264 * Note that .tlsbss/.bss are given the largest identifiers. This insures that 265 * if any unknown sections become associated to the same segment as the .bss, 266 * the .bss sections are always the last section in the segment. 267 */ 268 #define M_ID_NULL 0x00 269 #define M_ID_USER 0x01 270 271 #define M_ID_INTERP 0x02 /* SHF_ALLOC */ 272 #define M_ID_CAP 0x03 273 #define M_ID_SYMINFO 0x04 274 #define M_ID_HASH 0x05 275 #define M_ID_LDYNSYM 0x06 /* always right before DYNSYM */ 276 #define M_ID_DYNSYM 0x07 277 #define M_ID_DYNSTR 0x08 278 #define M_ID_VERSION 0x09 279 #define M_ID_DYNSORT 0x0a 280 #define M_ID_REL 0x0b 281 #define M_ID_TEXT 0x0c /* SHF_ALLOC + SHF_EXECINSTR */ 282 #define M_ID_DATA 0x0d 283 284 /* M_ID_USER 0x01 dual entry - listed above */ 285 #define M_ID_GOTDATA 0x02 /* SHF_ALLOC + SHF_WRITE */ 286 #define M_ID_GOT 0x03 287 #define M_ID_PLT 0x04 288 #define M_ID_DYNAMIC 0x05 289 #define M_ID_ARRAY 0x06 290 291 #define M_ID_UNKNOWN 0xfc /* just before TLS */ 292 293 #define M_ID_TLS 0xfd /* just before bss */ 294 #define M_ID_TLSBSS 0xfe 295 #define M_ID_BSS 0xff 296 297 #define M_ID_SYMTAB_NDX 0x02 /* ! SHF_ALLOC */ 298 #define M_ID_SYMTAB 0x03 299 #define M_ID_STRTAB 0x04 300 #define M_ID_DYNSYM_NDX 0x05 301 #define M_ID_NOTE 0x06 302 303 304 #ifdef __cplusplus 305 } 306 #endif 307 308 #endif /* _MACHDEP_SPARC_H */ 309