/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 1988 AT&T * All Rights Reserved * * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved. * * Global include file for all sgs ia32 based machine dependent macros, * constants and declarations. */ #ifndef _MACHDEP_X86_H #define _MACHDEP_X86_H #include <link.h> #include <sys/machelf.h> #ifdef __cplusplus extern "C" { #endif /* * Elf header information. */ #define M_MACH_32 EM_386 #define M_MACH_64 EM_AMD64 #ifdef _ELF64 #define M_MACH EM_AMD64 #define M_CLASS ELFCLASS64 #else #define M_MACH EM_386 #define M_CLASS ELFCLASS32 #endif #define M_MACHPLUS M_MACH #define M_DATA ELFDATA2LSB #define M_FLAGSPLUS 0 /* * Page boundary Macros: truncate to previous page boundary and round to * next page boundary (refer to generic macros in ../sgs.h also). */ #define M_PTRUNC(X) ((X) & ~(syspagsz - 1)) #define M_PROUND(X) (((X) + syspagsz - 1) & ~(syspagsz - 1)) /* * Segment boundary macros: truncate to previous segment boundary and round * to next page boundary. */ #if defined(_ELF64) #define M_SEGSIZE ELF_AMD64_MAXPGSZ #else #define M_SEGSIZE ELF_386_MAXPGSZ #endif #define M_STRUNC(X) ((X) & ~(M_SEGSIZE - 1)) #define M_SROUND(X) (((X) + M_SEGSIZE - 1) & ~(M_SEGSIZE - 1)) /* * Relocation type macros. */ #if defined(_ELF64) #define M_RELOC Rela #else #define M_RELOC Rel #endif /* * TLS static segments must be rounded to the following requirements, * due to libthread stack allocation. */ #if defined(_ELF64) #define M_TLSSTATALIGN 0x10 #else #define M_TLSSTATALIGN 0x08 #endif /* * Other machine dependent entities */ #if defined(_ELF64) #define M_SEGM_ALIGN 0x00010000 #else #define M_SEGM_ALIGN ELF_386_MAXPGSZ #endif /* * Values for IA32 objects */ /* * Instruction encodings. */ #define M_INST_JMP 0xe9 #define M_INST_PUSHL 0x68 #define M_SPECIAL_INST 0xff #define M_PUSHL_DISP 0x35 #define M_PUSHL_REG_DISP 0xb3 #define M_JMP_DISP_IND 0x25 #define M_JMP_REG_DISP_IND 0xa3 #define M_NOP 0x90 #define M_BIND_ADJ 1 /* adjustment for end of */ /* elf_rtbndr() address */ #ifdef _ELF64 /* * Provide default starting addresses. 64-bit programs can also be restricted * to a 32-bit address space (SF1_SUNW_ADDR32), and these programs provide an * alternative origin. */ #define M_SEGM_ORIGIN (Addr)0x400000ULL /* default 1st segment origin */ #define M_SEGM_AORIGIN (Addr)0x10000ULL /* alternative 1st segment */ /* origin */ #else #define M_STACK_GAP (0x08000000) #define M_STACK_PGS (0x00048000) #define M_SEGM_ORIGIN (Addr)(M_STACK_GAP + M_STACK_PGS) #define M_SEGM_AORIGIN M_SEGM_ORIGIN #endif /* * Make common relocation information transparent to the common code */ #if defined(_ELF64) #define M_REL_DT_TYPE DT_RELA /* .dynamic entry */ #define M_REL_DT_SIZE DT_RELASZ /* .dynamic entry */ #define M_REL_DT_ENT DT_RELAENT /* .dynamic entry */ #define M_REL_DT_COUNT DT_RELACOUNT /* .dynamic entry */ #define M_REL_SHT_TYPE SHT_RELA /* section header type */ #define M_REL_ELF_TYPE ELF_T_RELA /* data buffer type */ #else /* _ELF32 */ #define M_REL_DT_TYPE DT_REL /* .dynamic entry */ #define M_REL_DT_SIZE DT_RELSZ /* .dynamic entry */ #define M_REL_DT_ENT DT_RELENT /* .dynamic entry */ #define M_REL_DT_COUNT DT_RELCOUNT /* .dynamic entry */ #define M_REL_SHT_TYPE SHT_REL /* section header type */ #define M_REL_ELF_TYPE ELF_T_REL /* data buffer type */ #endif /* ELF32 */ /* * Make common relocation types transparent to the common code */ #if defined(_ELF64) #define M_R_NONE R_AMD64_NONE #define M_R_GLOB_DAT R_AMD64_GLOB_DAT #define M_R_COPY R_AMD64_COPY #define M_R_RELATIVE R_AMD64_RELATIVE #define M_R_JMP_SLOT R_AMD64_JUMP_SLOT #define M_R_FPTR R_AMD64_NONE #define M_R_ARRAYADDR R_AMD64_GLOB_DAT #define M_R_NUM R_AMD64_NUM #else #define M_R_NONE R_386_NONE #define M_R_GLOB_DAT R_386_GLOB_DAT #define M_R_COPY R_386_COPY #define M_R_RELATIVE R_386_RELATIVE #define M_R_JMP_SLOT R_386_JMP_SLOT #define M_R_FPTR R_386_NONE #define M_R_ARRAYADDR R_386_GLOB_DAT #define M_R_NUM R_386_NUM #endif /* * The following are defined as M_R_NONE so that checks * for these relocations can be performed in common code - although * the checks are really only relevant to SPARC. */ #define M_R_REGISTER M_R_NONE /* * DT_REGISTER is not valid on i386 or amd64 */ #define M_DT_REGISTER 0xffffffff /* * Make plt section information transparent to the common code. */ #define M_PLT_SHF_FLAGS (SHF_ALLOC | SHF_EXECINSTR) /* * Make default data segment and stack flags transparent to the common code. */ #ifdef _ELF64 #define M_DATASEG_PERM (PF_R | PF_W) #define M_STACK_PERM (PF_R | PF_W) #else #define M_DATASEG_PERM (PF_R | PF_W | PF_X) #define M_STACK_PERM (PF_R | PF_W | PF_X) #endif /* * Define a set of identifies for special sections. These allow the sections * to be ordered within the output file image. These values should be * maintained consistently, where appropriate, in each platform specific header * file. * * - null identifies that this section does not need to be added to the * output image (ie. shared object sections or sections we're going to * recreate (sym tables, string tables, relocations, etc.)). * * - any user defined section will be first in the associated segment. * * - interp and capabilities sections are next, as these are accessed * immediately the first page of the image is mapped. * * - objects that do not provide an interp normally have a read-only * .dynamic section that comes next (in this case, there is no need to * update a DT_DEBUG entry at runtime). * * - the syminfo, hash, dynsym, dynstr and rel's are grouped together as * these will all be accessed together by ld.so.1 to perform relocations. * * - the got and dynamic are grouped together as these may also be * accessed first by ld.so.1 to perform relocations, fill in DT_DEBUG * (executables only), and .got[0]. * * - unknown sections (stabs, comments, etc.) go at the end. * * Note that .tlsbss/.bss are given the largest identifiers. This insures that * if any unknown sections become associated to the same segment as the .bss, * the .bss sections are always the last section in the segment. */ #define M_ID_NULL 0x00 #define M_ID_USER 0x01 #define M_ID_INTERP 0x02 /* SHF_ALLOC */ #define M_ID_CAP 0x03 #define M_ID_CAPINFO 0x04 #define M_ID_CAPCHAIN 0x05 #define M_ID_DYNAMIC 0x06 /* if no .interp, then no */ /* DT_DEBUG is required */ #define M_ID_UNWINDHDR 0x07 #define M_ID_UNWIND 0x08 #define M_ID_SYMINFO 0x09 #define M_ID_HASH 0x0a #define M_ID_LDYNSYM 0x0b /* always right before DYNSYM */ #define M_ID_DYNSYM 0x0c #define M_ID_DYNSTR 0x0d #define M_ID_VERSION 0x0e #define M_ID_DYNSORT 0x0f #define M_ID_REL 0x10 #define M_ID_PLT 0x11 /* SHF_ALLOC + SHF_EXECINSTR */ #define M_ID_ARRAY 0x12 #define M_ID_TEXT 0x13 #define M_ID_DATA 0x20 /* M_ID_USER 0x01 dual entry - listed above */ #define M_ID_GOT 0x03 /* SHF_ALLOC + SHF_WRITE */ /* M_ID_DYNAMIC 0x06 dual entry - listed above */ /* M_ID_UNWIND 0x08 dual entry - listed above */ #define M_ID_UNKNOWN 0xfb /* just before TLS */ #define M_ID_TLS 0xfc /* just before bss */ #define M_ID_TLSBSS 0xfd #define M_ID_BSS 0xfe #define M_ID_LBSS 0xff #define M_ID_SYMTAB_NDX 0x02 /* ! SHF_ALLOC */ #define M_ID_SYMTAB 0x03 #define M_ID_STRTAB 0x04 #define M_ID_DYNSYM_NDX 0x05 #define M_ID_NOTE 0x06 #ifdef __cplusplus } #endif #endif /* _MACHDEP_X86_H */
