1ba2be530Sab196087 /* 2ba2be530Sab196087 * CDDL HEADER START 3ba2be530Sab196087 * 4ba2be530Sab196087 * The contents of this file are subject to the terms of the 5ba2be530Sab196087 * Common Development and Distribution License (the "License"). 6ba2be530Sab196087 * You may not use this file except in compliance with the License. 7ba2be530Sab196087 * 8ba2be530Sab196087 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9ba2be530Sab196087 * or http://www.opensolaris.org/os/licensing. 10ba2be530Sab196087 * See the License for the specific language governing permissions 11ba2be530Sab196087 * and limitations under the License. 12ba2be530Sab196087 * 13ba2be530Sab196087 * When distributing Covered Code, include this CDDL HEADER in each 14ba2be530Sab196087 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15ba2be530Sab196087 * If applicable, add the following below this CDDL HEADER, with the 16ba2be530Sab196087 * fields enclosed by brackets "[]" replaced with your own identifying 17ba2be530Sab196087 * information: Portions Copyright [yyyy] [name of copyright owner] 18ba2be530Sab196087 * 19ba2be530Sab196087 * CDDL HEADER END 20ba2be530Sab196087 */ 21ba2be530Sab196087 22ba2be530Sab196087 /* 23ba2be530Sab196087 * Copyright (c) 1988 AT&T 24ba2be530Sab196087 * All Rights Reserved 25ba2be530Sab196087 * 26*94c044f4SRod Evans * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved. 27ba2be530Sab196087 * 28ba2be530Sab196087 * Global include file for all sgs ia32 based machine dependent macros, 29ba2be530Sab196087 * constants and declarations. 30ba2be530Sab196087 */ 31ba2be530Sab196087 32ba2be530Sab196087 #ifndef _MACHDEP_X86_H 33ba2be530Sab196087 #define _MACHDEP_X86_H 34ba2be530Sab196087 35ba2be530Sab196087 #include <link.h> 36ba2be530Sab196087 #include <sys/machelf.h> 37ba2be530Sab196087 38ba2be530Sab196087 #ifdef __cplusplus 39ba2be530Sab196087 extern "C" { 40ba2be530Sab196087 #endif 41ba2be530Sab196087 42ba2be530Sab196087 /* 43ba2be530Sab196087 * Elf header information. 44ba2be530Sab196087 */ 45ba2be530Sab196087 #define M_MACH_32 EM_386 46ba2be530Sab196087 #define M_MACH_64 EM_AMD64 47ba2be530Sab196087 48ba2be530Sab196087 #ifdef _ELF64 49ba2be530Sab196087 #define M_MACH EM_AMD64 50ba2be530Sab196087 #define M_CLASS ELFCLASS64 51ba2be530Sab196087 #else 52ba2be530Sab196087 #define M_MACH EM_386 53ba2be530Sab196087 #define M_CLASS ELFCLASS32 54ba2be530Sab196087 #endif 55ba2be530Sab196087 56ba2be530Sab196087 #define M_MACHPLUS M_MACH 57ba2be530Sab196087 #define M_DATA ELFDATA2LSB 58ba2be530Sab196087 #define M_FLAGSPLUS 0 59ba2be530Sab196087 60ba2be530Sab196087 /* 61ba2be530Sab196087 * Page boundary Macros: truncate to previous page boundary and round to 62ba2be530Sab196087 * next page boundary (refer to generic macros in ../sgs.h also). 63ba2be530Sab196087 */ 64ba2be530Sab196087 #define M_PTRUNC(X) ((X) & ~(syspagsz - 1)) 65ba2be530Sab196087 #define M_PROUND(X) (((X) + syspagsz - 1) & ~(syspagsz - 1)) 66ba2be530Sab196087 67ba2be530Sab196087 /* 68ba2be530Sab196087 * Segment boundary macros: truncate to previous segment boundary and round 69ba2be530Sab196087 * to next page boundary. 70ba2be530Sab196087 */ 71ba2be530Sab196087 #if defined(_ELF64) 72ba2be530Sab196087 #define M_SEGSIZE ELF_AMD64_MAXPGSZ 73ba2be530Sab196087 #else 74ba2be530Sab196087 #define M_SEGSIZE ELF_386_MAXPGSZ 75ba2be530Sab196087 #endif 76ba2be530Sab196087 77ba2be530Sab196087 #define M_STRUNC(X) ((X) & ~(M_SEGSIZE - 1)) 78ba2be530Sab196087 #define M_SROUND(X) (((X) + M_SEGSIZE - 1) & ~(M_SEGSIZE - 1)) 79ba2be530Sab196087 80ba2be530Sab196087 /* 8156deab07SRod Evans * Relocation type macros. 8256deab07SRod Evans */ 8356deab07SRod Evans #if defined(_ELF64) 8456deab07SRod Evans #define M_RELOC Rela 8556deab07SRod Evans #else 8656deab07SRod Evans #define M_RELOC Rel 8756deab07SRod Evans #endif 8856deab07SRod Evans 8956deab07SRod Evans /* 90ba2be530Sab196087 * TLS static segments must be rounded to the following requirements, 91ba2be530Sab196087 * due to libthread stack allocation. 92ba2be530Sab196087 */ 93ba2be530Sab196087 #if defined(_ELF64) 94ba2be530Sab196087 #define M_TLSSTATALIGN 0x10 95ba2be530Sab196087 #else 96ba2be530Sab196087 #define M_TLSSTATALIGN 0x08 97ba2be530Sab196087 #endif 98ba2be530Sab196087 99ba2be530Sab196087 /* 100ba2be530Sab196087 * Other machine dependent entities 101ba2be530Sab196087 */ 102ba2be530Sab196087 #if defined(_ELF64) 103ba2be530Sab196087 #define M_SEGM_ALIGN 0x00010000 104ba2be530Sab196087 #else 105ba2be530Sab196087 #define M_SEGM_ALIGN ELF_386_MAXPGSZ 106ba2be530Sab196087 #endif 107ba2be530Sab196087 108ba2be530Sab196087 /* 109ba2be530Sab196087 * Values for IA32 objects 110ba2be530Sab196087 */ 111ba2be530Sab196087 112ba2be530Sab196087 /* 113ba2be530Sab196087 * Instruction encodings. 114ba2be530Sab196087 */ 115ba2be530Sab196087 #define M_INST_JMP 0xe9 116ba2be530Sab196087 #define M_INST_PUSHL 0x68 117ba2be530Sab196087 #define M_SPECIAL_INST 0xff 118ba2be530Sab196087 #define M_PUSHL_DISP 0x35 119ba2be530Sab196087 #define M_PUSHL_REG_DISP 0xb3 120ba2be530Sab196087 #define M_JMP_DISP_IND 0x25 121ba2be530Sab196087 #define M_JMP_REG_DISP_IND 0xa3 122ba2be530Sab196087 #define M_NOP 0x90 123ba2be530Sab196087 124ba2be530Sab196087 #define M_BIND_ADJ 1 /* adjustment for end of */ 125ba2be530Sab196087 /* elf_rtbndr() address */ 126ba2be530Sab196087 #ifdef _ELF64 127bb3b4f6cSRod Evans /* 128bb3b4f6cSRod Evans * Provide default starting addresses. 64-bit programs can also be restricted 129bb3b4f6cSRod Evans * to a 32-bit address space (SF1_SUNW_ADDR32), and these programs provide an 130bb3b4f6cSRod Evans * alternative origin. 131bb3b4f6cSRod Evans */ 132bb3b4f6cSRod Evans #define M_SEGM_ORIGIN (Addr)0x400000ULL /* default 1st segment origin */ 133bb3b4f6cSRod Evans #define M_SEGM_AORIGIN (Addr)0x10000ULL /* alternative 1st segment */ 134bb3b4f6cSRod Evans /* origin */ 135ba2be530Sab196087 #else 136ba2be530Sab196087 #define M_STACK_GAP (0x08000000) 137ba2be530Sab196087 #define M_STACK_PGS (0x00048000) 138ba2be530Sab196087 #define M_SEGM_ORIGIN (Addr)(M_STACK_GAP + M_STACK_PGS) 139bb3b4f6cSRod Evans #define M_SEGM_AORIGIN M_SEGM_ORIGIN 140ba2be530Sab196087 #endif 141ba2be530Sab196087 142ba2be530Sab196087 /* 143ba2be530Sab196087 * Make common relocation information transparent to the common code 144ba2be530Sab196087 */ 145ba2be530Sab196087 #if defined(_ELF64) 146ba2be530Sab196087 #define M_REL_DT_TYPE DT_RELA /* .dynamic entry */ 147ba2be530Sab196087 #define M_REL_DT_SIZE DT_RELASZ /* .dynamic entry */ 148ba2be530Sab196087 #define M_REL_DT_ENT DT_RELAENT /* .dynamic entry */ 149ba2be530Sab196087 #define M_REL_DT_COUNT DT_RELACOUNT /* .dynamic entry */ 150ba2be530Sab196087 #define M_REL_SHT_TYPE SHT_RELA /* section header type */ 151ba2be530Sab196087 #define M_REL_ELF_TYPE ELF_T_RELA /* data buffer type */ 152ba2be530Sab196087 153ba2be530Sab196087 #else /* _ELF32 */ 154ba2be530Sab196087 #define M_REL_DT_TYPE DT_REL /* .dynamic entry */ 155ba2be530Sab196087 #define M_REL_DT_SIZE DT_RELSZ /* .dynamic entry */ 156ba2be530Sab196087 #define M_REL_DT_ENT DT_RELENT /* .dynamic entry */ 157ba2be530Sab196087 #define M_REL_DT_COUNT DT_RELCOUNT /* .dynamic entry */ 158ba2be530Sab196087 #define M_REL_SHT_TYPE SHT_REL /* section header type */ 159ba2be530Sab196087 #define M_REL_ELF_TYPE ELF_T_REL /* data buffer type */ 160ba2be530Sab196087 161ba2be530Sab196087 #endif /* ELF32 */ 162ba2be530Sab196087 163ba2be530Sab196087 /* 164ba2be530Sab196087 * Make common relocation types transparent to the common code 165ba2be530Sab196087 */ 166ba2be530Sab196087 #if defined(_ELF64) 167ba2be530Sab196087 #define M_R_NONE R_AMD64_NONE 168ba2be530Sab196087 #define M_R_GLOB_DAT R_AMD64_GLOB_DAT 169ba2be530Sab196087 #define M_R_COPY R_AMD64_COPY 170ba2be530Sab196087 #define M_R_RELATIVE R_AMD64_RELATIVE 171ba2be530Sab196087 #define M_R_JMP_SLOT R_AMD64_JUMP_SLOT 172ba2be530Sab196087 #define M_R_FPTR R_AMD64_NONE 173ba2be530Sab196087 #define M_R_ARRAYADDR R_AMD64_GLOB_DAT 174ba2be530Sab196087 #define M_R_NUM R_AMD64_NUM 175ba2be530Sab196087 #else 176ba2be530Sab196087 #define M_R_NONE R_386_NONE 177ba2be530Sab196087 #define M_R_GLOB_DAT R_386_GLOB_DAT 178ba2be530Sab196087 #define M_R_COPY R_386_COPY 179ba2be530Sab196087 #define M_R_RELATIVE R_386_RELATIVE 180ba2be530Sab196087 #define M_R_JMP_SLOT R_386_JMP_SLOT 181ba2be530Sab196087 #define M_R_FPTR R_386_NONE 182ba2be530Sab196087 #define M_R_ARRAYADDR R_386_GLOB_DAT 183ba2be530Sab196087 #define M_R_NUM R_386_NUM 184ba2be530Sab196087 #endif 185ba2be530Sab196087 186ba2be530Sab196087 /* 187ba2be530Sab196087 * The following are defined as M_R_NONE so that checks 188ba2be530Sab196087 * for these relocations can be performed in common code - although 189ba2be530Sab196087 * the checks are really only relevant to SPARC. 190ba2be530Sab196087 */ 191ba2be530Sab196087 #define M_R_REGISTER M_R_NONE 192ba2be530Sab196087 193ba2be530Sab196087 /* 194ba2be530Sab196087 * DT_REGISTER is not valid on i386 or amd64 195ba2be530Sab196087 */ 196ba2be530Sab196087 #define M_DT_REGISTER 0xffffffff 197ba2be530Sab196087 198ba2be530Sab196087 /* 199ba2be530Sab196087 * Make plt section information transparent to the common code. 200ba2be530Sab196087 */ 201ba2be530Sab196087 #define M_PLT_SHF_FLAGS (SHF_ALLOC | SHF_EXECINSTR) 202ba2be530Sab196087 203ba2be530Sab196087 /* 20469112eddSAli Bahrami * Make default data segment and stack flags transparent to the common code. 205ba2be530Sab196087 */ 206ba2be530Sab196087 #ifdef _ELF64 207ba2be530Sab196087 #define M_DATASEG_PERM (PF_R | PF_W) 20869112eddSAli Bahrami #define M_STACK_PERM (PF_R | PF_W) 209ba2be530Sab196087 #else 210ba2be530Sab196087 #define M_DATASEG_PERM (PF_R | PF_W | PF_X) 21169112eddSAli Bahrami #define M_STACK_PERM (PF_R | PF_W | PF_X) 212ba2be530Sab196087 #endif 213ba2be530Sab196087 214ba2be530Sab196087 /* 215ba2be530Sab196087 * Define a set of identifies for special sections. These allow the sections 216ba2be530Sab196087 * to be ordered within the output file image. These values should be 217ba2be530Sab196087 * maintained consistently, where appropriate, in each platform specific header 218ba2be530Sab196087 * file. 219ba2be530Sab196087 * 220*94c044f4SRod Evans * - null identifies that this section does not need to be added to the 221ba2be530Sab196087 * output image (ie. shared object sections or sections we're going to 222ba2be530Sab196087 * recreate (sym tables, string tables, relocations, etc.)). 223ba2be530Sab196087 * 224*94c044f4SRod Evans * - any user defined section will be first in the associated segment. 225ba2be530Sab196087 * 226*94c044f4SRod Evans * - interp and capabilities sections are next, as these are accessed 227ba2be530Sab196087 * immediately the first page of the image is mapped. 228ba2be530Sab196087 * 229*94c044f4SRod Evans * - objects that do not provide an interp normally have a read-only 230*94c044f4SRod Evans * .dynamic section that comes next (in this case, there is no need to 231*94c044f4SRod Evans * update a DT_DEBUG entry at runtime). 232ba2be530Sab196087 * 233*94c044f4SRod Evans * - the syminfo, hash, dynsym, dynstr and rel's are grouped together as 234*94c044f4SRod Evans * these will all be accessed together by ld.so.1 to perform relocations. 235*94c044f4SRod Evans * 236*94c044f4SRod Evans * - the got and dynamic are grouped together as these may also be 237ba2be530Sab196087 * accessed first by ld.so.1 to perform relocations, fill in DT_DEBUG 238ba2be530Sab196087 * (executables only), and .got[0]. 239ba2be530Sab196087 * 240*94c044f4SRod Evans * - unknown sections (stabs, comments, etc.) go at the end. 241ba2be530Sab196087 * 242ba2be530Sab196087 * Note that .tlsbss/.bss are given the largest identifiers. This insures that 243ba2be530Sab196087 * if any unknown sections become associated to the same segment as the .bss, 244ba2be530Sab196087 * the .bss sections are always the last section in the segment. 245ba2be530Sab196087 */ 246ba2be530Sab196087 #define M_ID_NULL 0x00 247ba2be530Sab196087 #define M_ID_USER 0x01 248ba2be530Sab196087 24908278a5eSRod Evans #define M_ID_INTERP 0x02 /* SHF_ALLOC */ 25008278a5eSRod Evans #define M_ID_CAP 0x03 251*94c044f4SRod Evans #define M_ID_CAPINFO 0x04 252*94c044f4SRod Evans #define M_ID_CAPCHAIN 0x05 25308278a5eSRod Evans 254*94c044f4SRod Evans #define M_ID_DYNAMIC 0x06 /* if no .interp, then no */ 255*94c044f4SRod Evans /* DT_DEBUG is required */ 256*94c044f4SRod Evans #define M_ID_UNWINDHDR 0x07 257*94c044f4SRod Evans #define M_ID_UNWIND 0x08 258*94c044f4SRod Evans 259*94c044f4SRod Evans #define M_ID_SYMINFO 0x09 260*94c044f4SRod Evans #define M_ID_HASH 0x0a 261*94c044f4SRod Evans #define M_ID_LDYNSYM 0x0b /* always right before DYNSYM */ 262*94c044f4SRod Evans #define M_ID_DYNSYM 0x0c 263*94c044f4SRod Evans #define M_ID_DYNSTR 0x0d 264*94c044f4SRod Evans #define M_ID_VERSION 0x0e 265*94c044f4SRod Evans #define M_ID_DYNSORT 0x0f 266*94c044f4SRod Evans #define M_ID_REL 0x10 267*94c044f4SRod Evans #define M_ID_PLT 0x11 /* SHF_ALLOC + SHF_EXECINSTR */ 268*94c044f4SRod Evans #define M_ID_ARRAY 0x12 26908278a5eSRod Evans #define M_ID_TEXT 0x13 270ba2be530Sab196087 #define M_ID_DATA 0x20 271ba2be530Sab196087 2727e16fca0SAli Bahrami /* M_ID_USER 0x01 dual entry - listed above */ 273ba2be530Sab196087 #define M_ID_GOT 0x03 /* SHF_ALLOC + SHF_WRITE */ 274*94c044f4SRod Evans /* M_ID_DYNAMIC 0x06 dual entry - listed above */ 275*94c044f4SRod Evans /* M_ID_UNWIND 0x08 dual entry - listed above */ 276ba2be530Sab196087 277ba2be530Sab196087 #define M_ID_UNKNOWN 0xfb /* just before TLS */ 278ba2be530Sab196087 279ba2be530Sab196087 #define M_ID_TLS 0xfc /* just before bss */ 280ba2be530Sab196087 #define M_ID_TLSBSS 0xfd 281ba2be530Sab196087 #define M_ID_BSS 0xfe 282ba2be530Sab196087 #define M_ID_LBSS 0xff 283ba2be530Sab196087 284ba2be530Sab196087 #define M_ID_SYMTAB_NDX 0x02 /* ! SHF_ALLOC */ 285ba2be530Sab196087 #define M_ID_SYMTAB 0x03 286ba2be530Sab196087 #define M_ID_STRTAB 0x04 287ba2be530Sab196087 #define M_ID_DYNSYM_NDX 0x05 288ba2be530Sab196087 #define M_ID_NOTE 0x06 289ba2be530Sab196087 290ba2be530Sab196087 291ba2be530Sab196087 #ifdef __cplusplus 292ba2be530Sab196087 } 293ba2be530Sab196087 #endif 294ba2be530Sab196087 295ba2be530Sab196087 #endif /* _MACHDEP_X86_H */ 296