sys/powerpc/include/elf.h

root/sys/powerpc/include/elf.h
/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2001 David E. O'Brien
 * Copyright (c) 1996-1997 John D. Polstra.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _MACHINE_ELF_H_
#define _MACHINE_ELF_H_ 1

/*
 * EABI ELF definitions for the PowerPC architecture.
 * See "PowerPC Embedded Application Binary Interface, 32-Bit Impliementation"
 * [ppc-eabi-1995-01.pdf] for details.
 */

#ifndef __ELF_WORD_SIZE
#ifdef __powerpc64__
#define __ELF_WORD_SIZE 64      /* Used by <sys/elf_generic.h> */
#else
#define __ELF_WORD_SIZE 32      /* Used by <sys/elf_generic.h> */
#endif
#endif

#include <sys/elf32.h>  /* Definitions common to all 32 bit architectures. */
#include <sys/elf64.h>  /* Definitions common to all 64 bit architectures. */
#include <sys/elf_generic.h>

#if __ELF_WORD_SIZE == 64
#define ELF_ARCH        EM_PPC64
#define ELF_MACHINE_OK(x) ((x) == EM_PPC64)
#else
#define ELF_ARCH        EM_PPC
#define ELF_ARCH32      EM_PPC
#define ELF_MACHINE_OK(x) ((x) == EM_PPC)
#endif

/*
 * Auxiliary vector entries for passing information to the interpreter.
 *
 * The PowerPC supplement to the SVR4 ABI specification names this "auxv_t",
 * but POSIX lays claim to all symbols ending with "_t".
 */

typedef struct {        /* Auxiliary vector entry on initial stack */
        int     a_type;                 /* Entry type. */
        union {
#ifdef __powerpc64__
                int     a_val;          /* Integer value */
#else
                long    a_val;          /* Integer value. */
                void    *a_ptr;         /* Address. */
                void    (*a_fcn)(void); /* Function pointer (not used). */
#endif
        } a_un;
} Elf32_Auxinfo;

typedef struct {        /* Auxiliary vector entry on initial stack */
        long    a_type;                 /* Entry type. */
        union {
                long    a_val;          /* Integer value. */
                void    *a_ptr;         /* Address. */
                void    (*a_fcn)(void); /* Function pointer (not used). */
        } a_un;
} Elf64_Auxinfo;

__ElfType(Auxinfo);

/*
 * Relocation types.
 */

#define R_PPC_COUNT             37      /* Count of defined relocation types. */

                                        /* Count of defined relocation types. */
#define R_PPC_EMB_COUNT         (R_PPC_EMB_RELSDA - R_PPC_EMB_NADDR32 + 1)

/* Define "machine" characteristics */
#if BYTE_ORDER == LITTLE_ENDIAN
#define ELF_TARG_DATA   ELFDATA2LSB
#else
#define ELF_TARG_DATA   ELFDATA2MSB
#endif
#if __ELF_WORD_SIZE == 64
#define ELF_TARG_CLASS  ELFCLASS64
#define ELF_TARG_MACH   EM_PPC64
#define ELF_TARG_VER    1
#else
#define ELF_TARG_CLASS  ELFCLASS32
#define ELF_TARG_MACH   EM_PPC
#define ELF_TARG_VER    1
#endif

#define ET_DYN_LOAD_ADDR 0x01010000

#define AT_OLD_NULL             AT_NULL
#define AT_OLD_IGNORE           AT_IGNORE
#define AT_OLD_EXECFD           AT_EXECFD
#define AT_OLD_PHDR             AT_PHDR
#define AT_OLD_PHENT            AT_PHENT
#define AT_OLD_PHNUM            AT_PHNUM
#define AT_OLD_PAGESZ           AT_PAGESZ
#define AT_OLD_BASE             AT_BASE
#define AT_OLD_FLAGS            AT_FLAGS
#define AT_OLD_ENTRY            AT_ENTRY
#define AT_OLD_NOTELF           AT_NOTELF
#define AT_OLD_UID              AT_UID
#define AT_OLD_EUID             AT_EUID
#define AT_OLD_EXECPATH         13
#define AT_OLD_CANARY           14
#define AT_OLD_CANARYLEN        15
#define AT_OLD_OSRELDATE        16
#define AT_OLD_NCPUS            17
#define AT_OLD_PAGESIZES        18
#define AT_OLD_PAGESIZESLEN     19
#define AT_OLD_STACKPROT        21
#define AT_OLD_TIMEKEEP         AT_TIMEKEEP
#define AT_OLD_EHDRFLAGS        AT_EHDRFLAGS
#define AT_OLD_HWCAP            AT_HWCAP
#define AT_OLD_HWCAP2           AT_HWCAP2

#define AT_OLD_COUNT    27      /* Count of defined aux entry types. */

#endif /* !_MACHINE_ELF_H_ */
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