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/*
* 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 */
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