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 2009 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 #include <link.h> 37 #include <sys/machelf.h> 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 /* 44 * Elf header information. 45 */ 46 #define M_MACH_32 EM_SPARC 47 #define M_MACH_64 EM_SPARCV9 48 49 #ifdef _ELF64 50 #define M_MACH EM_SPARCV9 51 #define M_CLASS ELFCLASS64 52 #else 53 #define M_MACH EM_SPARC 54 #define M_CLASS ELFCLASS32 55 #endif 56 #define M_MACHPLUS EM_SPARC32PLUS 57 #define M_DATA ELFDATA2MSB 58 #define M_FLAGSPLUS EF_SPARC_32PLUS 59 60 /* 61 * Page boundary Macros: truncate to previous page boundary and round to 62 * next page boundary (refer to generic macros in ../sgs.h also). 63 */ 64 #define M_PTRUNC(X) ((X) & ~(syspagsz - 1)) 65 #define M_PROUND(X) (((X) + syspagsz - 1) & ~(syspagsz - 1)) 66 67 /* 68 * Segment boundary macros: truncate to previous segment boundary and round 69 * to next page boundary. 70 */ 71 #ifndef M_SEGSIZE 72 #define M_SEGSIZE ELF_SPARC_MAXPGSZ 73 #endif 74 #define M_STRUNC(X) ((X) & ~(M_SEGSIZE - 1)) 75 #define M_SROUND(X) (((X) + M_SEGSIZE - 1) & ~(M_SEGSIZE - 1)) 76 77 /* 78 * Relocation type macro. 79 */ 80 #define M_RELOC Rela 81 82 /* 83 * TLS static segments must be rounded to the following requirements, 84 * due to libthread stack allocation. 85 */ 86 #if defined(_ELF64) 87 #define M_TLSSTATALIGN 0x10 88 #else 89 #define M_TLSSTATALIGN 0x08 90 #endif 91 92 /* 93 * Instruction encodings. 94 */ 95 #define M_SAVESP64 0x9de3bfc0 /* save %sp, -64, %sp */ 96 #define M_CALL 0x40000000 97 #define M_JMPL 0x81c06000 /* jmpl %g1 + simm13, %g0 */ 98 #define M_SETHIG0 0x01000000 /* sethi %hi(val), %g0 */ 99 #define M_SETHIG1 0x03000000 /* sethi %hi(val), %g1 */ 100 #define M_STO7G1IM 0xde206000 /* st %o7,[%g1 + %lo(val)] */ 101 #define M_SUBFPSPG1 0x8227800e /* sub %fp,%sp,%g1 */ 102 #define M_NOP 0x01000000 /* sethi 0, %o0 (nop) */ 103 #define M_BA_A 0x30800000 /* ba,a */ 104 #define M_BA_A_PT 0x30480000 /* ba,a %icc, <dst> */ 105 #define M_MOVO7TOG1 0x8210000f /* mov %o7, %g1 */ 106 #define M_MOVO7TOG5 0x8a10000f /* mov %o7, %g5 */ 107 #define M_MOVI7TOG1 0x8210001f /* mov %i7, %g1 */ 108 #define M_BA_A_XCC 0x30680000 /* ba,a %xcc */ 109 #define M_JMPL_G5G0 0x81c16000 /* jmpl %g5 + 0, %g0 */ 110 #define M_XNOR_G5G1 0x82396000 /* xnor %g5, 0, %g1 */ 111 112 113 #define M_BIND_ADJ 4 /* adjustment for end of */ 114 /* elf_rtbndr() address */ 115 116 117 /* 118 * Plt and Got information; the first few .got and .plt entries are reserved 119 * PLT[0] jump to dynamic linker 120 * GOT[0] address of _DYNAMIC 121 */ 122 #define M_PLT_INSSIZE 4 /* single plt instruction size */ 123 #define M_GOT_XDYNAMIC 0 /* got index for _DYNAMIC */ 124 #define M_GOT_XNumber 1 /* reserved no. of got entries */ 125 126 /* 127 * ELF32 bit PLT constants 128 */ 129 #define M32_PLT_ENTSIZE 12 /* 32bit plt entry size in bytes */ 130 131 /* 132 * ELF64 bit PLT constants 133 */ 134 #define M64_PLT_NEARPLTS 0x8000 /* # of NEAR PLTS we can have */ 135 #define M64_PLT_ENTSIZE 32 /* plt entry size in bytes */ 136 #define M64_PLT_FENTSIZE 24 /* size of far plt is 6 instructions */ 137 /* x 4bytes */ 138 #define M64_PLT_PSIZE 8 /* size of PLTP pointer */ 139 #define M64_PLT_FBLKCNTS 160 /* # of plts in far PLT blocks */ 140 #define M64_PLT_FBLOCKSZ (M64_PLT_FBLKCNTS *\ 141 M64_PLT_ENTSIZE) /* size of far PLT block */ 142 143 144 #ifdef _ELF64 145 #define M_PLT_ENTSIZE M64_PLT_ENTSIZE /* plt entry size in bytes */ 146 #define M_PLT_XNumber 4 /* reserved no. of plt entries */ 147 #define M_PLT_ALIGN 256 /* alignment of .plt section */ 148 #define M_PLT_RESERVSZ (M_PLT_XNumber * \ 149 M_PLT_ENTSIZE) /* first 4 plt's reserved */ 150 #define M_GOT_ENTSIZE 8 /* got entry size in bytes */ 151 #define M_GOT_MAXSMALL 1024 /* maximum no. of small gots */ 152 #else /* Elf32 */ 153 #define M_PLT_ENTSIZE M32_PLT_ENTSIZE /* plt entry size in bytes */ 154 #define M_PLT_XNumber 4 /* reserved no. of plt entries */ 155 #define M_PLT_ALIGN M_WORD_ALIGN /* alignment of .plt section */ 156 #define M_PLT_RESERVSZ (M_PLT_XNumber * \ 157 M_PLT_ENTSIZE) /* first 4 plt's reserved */ 158 #define M_GOT_ENTSIZE 4 /* got entry size in bytes */ 159 #define M_GOT_MAXSMALL 2048 /* maximum no. of small gots */ 160 #endif /* _ELF64 */ 161 /* transition flags for got sizing */ 162 #define M_GOT_LARGE (Sword)(-M_GOT_MAXSMALL - 1) 163 #define M_GOT_SMALL (Sword)(-M_GOT_MAXSMALL - 2) 164 #define M_GOT_MIXED (Sword)(-M_GOT_MAXSMALL - 3) 165 166 167 /* 168 * Other machine dependent entities 169 */ 170 #ifdef _ELF64 171 #define M_SEGM_ALIGN ELF_SPARCV9_MAXPGSZ 172 /* 173 * Put default 64-bit programs above 4 gigabytes to help insure correctness, so 174 * that any 64-bit programs that truncate pointers will fault now instead of 175 * corrupting itself and dying mysteriously. 64-bit programs can also be 176 * restricted to a 32-bit address space (SF1_SUNW_ADDR32), and these programs 177 * provide an alternative origin. 178 */ 179 #define M_SEGM_ORIGIN (Addr)0x100000000ULL /* default 1st segment origin */ 180 #define M_SEGM_AORIGIN (Addr)0x100000ULL /* alternative 1st segment */ 181 /* origin */ 182 #define M_WORD_ALIGN 8 183 #else 184 #define M_SEGM_ALIGN ELF_SPARC_MAXPGSZ 185 #define M_SEGM_ORIGIN (Addr)0x10000 /* default 1st segment origin */ 186 #define M_SEGM_AORIGIN M_SEGM_ORIGIN /* alternative 1st segment */ 187 /* origin */ 188 #define M_WORD_ALIGN 4 189 #endif 190 191 /* 192 * Make common relocation information transparent to the common code 193 */ 194 #define M_REL_DT_TYPE DT_RELA /* .dynamic entry */ 195 #define M_REL_DT_SIZE DT_RELASZ /* .dynamic entry */ 196 #define M_REL_DT_ENT DT_RELAENT /* .dynamic entry */ 197 #define M_REL_DT_COUNT DT_RELACOUNT /* .dynamic entry */ 198 #define M_REL_SHT_TYPE SHT_RELA /* section header type */ 199 #define M_REL_ELF_TYPE ELF_T_RELA /* data buffer type */ 200 201 /* 202 * Make common relocation types transparent to the common code 203 */ 204 #define M_R_NONE R_SPARC_NONE 205 #define M_R_GLOB_DAT R_SPARC_GLOB_DAT 206 #define M_R_COPY R_SPARC_COPY 207 #define M_R_RELATIVE R_SPARC_RELATIVE 208 #define M_R_JMP_SLOT R_SPARC_JMP_SLOT 209 #define M_R_REGISTER R_SPARC_REGISTER 210 #define M_R_FPTR R_SPARC_NONE 211 #define M_R_NUM R_SPARC_NUM 212 213 #ifdef _ELF64 214 #define M_R_ARRAYADDR R_SPARC_64 215 #define M_R_DTPMOD R_SPARC_TLS_DTPMOD64 216 #define M_R_DTPOFF R_SPARC_TLS_DTPOFF64 217 #define M_R_TPOFF R_SPARC_TLS_TPOFF64 218 #else /* _ELF32 */ 219 #define M_R_ARRAYADDR R_SPARC_32 220 #define M_R_DTPMOD R_SPARC_TLS_DTPMOD32 221 #define M_R_DTPOFF R_SPARC_TLS_DTPOFF32 222 #define M_R_TPOFF R_SPARC_TLS_TPOFF32 223 #endif /* _ELF64 */ 224 225 226 /* 227 * Make register symbols transparent to common code 228 */ 229 #define M_DT_REGISTER DT_SPARC_REGISTER 230 231 /* 232 * Make plt section information transparent to the common code. 233 */ 234 #define M_PLT_SHF_FLAGS (SHF_ALLOC | SHF_WRITE | SHF_EXECINSTR) 235 236 /* 237 * Make data segment information transparent to the common code. 238 */ 239 #define M_DATASEG_PERM (PF_R | PF_W | PF_X) 240 241 /* 242 * Define a set of identifies for special sections. These allow the sections 243 * to be ordered within the output file image. These values should be 244 * maintained consistently, where appropriate, in each platform specific header 245 * file. 246 * 247 * o null identifies that this section does not need to be added to the 248 * output image (ie. shared object sections or sections we're going to 249 * recreate (sym tables, string tables, relocations, etc.)). 250 * 251 * o any user defined section will be first in the associated segment. 252 * 253 * o interp and capabilities sections are next, as these are accessed 254 * immediately the first page of the image is mapped. 255 * 256 * o the syminfo, hash, dynsym, dynstr and rel's are grouped together as 257 * these will all be accessed first by ld.so.1 to perform relocations. 258 * 259 * o the got, dynamic, and plt are grouped together as these may also be 260 * accessed first by ld.so.1 to perform relocations, fill in DT_DEBUG 261 * (executables only), and .plt[0]. 262 * 263 * o unknown sections (stabs, comments etc.) go at the end. 264 * 265 * Note that .tlsbss/.bss are given the largest identifiers. This insures that 266 * if any unknown sections become associated to the same segment as the .bss, 267 * the .bss sections are always the last section in the segment. 268 */ 269 #define M_ID_NULL 0x00 270 #define M_ID_USER 0x01 271 272 #define M_ID_INTERP 0x02 /* SHF_ALLOC */ 273 #define M_ID_CAP 0x03 274 #define M_ID_SYMINFO 0x04 275 #define M_ID_HASH 0x05 276 #define M_ID_LDYNSYM 0x06 /* always right before DYNSYM */ 277 #define M_ID_DYNSYM 0x07 278 #define M_ID_DYNSTR 0x08 279 #define M_ID_VERSION 0x09 280 #define M_ID_DYNSORT 0x0a 281 #define M_ID_REL 0x0b 282 #define M_ID_TEXT 0x0c /* SHF_ALLOC + SHF_EXECINSTR */ 283 #define M_ID_DATA 0x0d 284 285 /* M_ID_USER 0x01 dual entry - listed above */ 286 #define M_ID_GOTDATA 0x02 /* SHF_ALLOC + SHF_WRITE */ 287 #define M_ID_GOT 0x03 288 #define M_ID_PLT 0x04 289 #define M_ID_DYNAMIC 0x05 290 #define M_ID_ARRAY 0x06 291 292 #define M_ID_UNKNOWN 0xfc /* just before TLS */ 293 294 #define M_ID_TLS 0xfd /* just before bss */ 295 #define M_ID_TLSBSS 0xfe 296 #define M_ID_BSS 0xff 297 298 #define M_ID_SYMTAB_NDX 0x02 /* ! SHF_ALLOC */ 299 #define M_ID_SYMTAB 0x03 300 #define M_ID_STRTAB 0x04 301 #define M_ID_DYNSYM_NDX 0x05 302 #define M_ID_NOTE 0x06 303 304 305 #ifdef __cplusplus 306 } 307 #endif 308 309 #endif /* _MACHDEP_SPARC_H */ 310