FreeBSD/Linux Kernel Cross Reference
sys/powerpc/include/elf.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * 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.
     *
     * $FreeBSD$
     */
    
    #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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