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

     /*-
      * 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: releng/6.3/sys/arm/include/elf.h 167001 2007-02-26 01:05:01Z cognet $
     */
    
    #ifndef _MACHINE_ELF_H_
    #define _MACHINE_ELF_H_ 1
    
    /*
     * EABI ELF definitions for the StrongARM architecture.
     * See "ARM ELF", document no. `SWS ESPC 0003 A-08' for details.
     */
    
    #include <sys/elf32.h>  /* Definitions common to all 32 bit architectures. */
    
    #define __ELF_WORD_SIZE 32      /* Used by <sys/elf_generic.h> */
    #include <sys/elf_generic.h>
    
    typedef struct {        /* Auxiliary vector entry on initial stack */
            int     a_type;                 /* Entry type. */
            union {
                    long    a_val;          /* Integer value. */
                    void    *a_ptr;         /* Address. */
                    void    (*a_fcn)(void); /* Function pointer (not used). */
            } a_un;
    } Elf32_Auxinfo;
    
    __ElfType(Auxinfo);
    
    #define ELF_ARCH        EM_ARM
    
    #define ELF_MACHINE_OK(x) ((x) == EM_ARM)
    
    /*
     * Relocation types.
     */
    
    /* Values for a_type. */
    #define AT_NULL         0       /* Terminates the vector. */
    #define AT_IGNORE       1       /* Ignored entry. */
    #define AT_EXECFD       2       /* File descriptor of program to load. */
    #define AT_PHDR         3       /* Program header of program already loaded. */
    #define AT_PHENT        4       /* Size of each program header entry. */
    #define AT_PHNUM        5       /* Number of program header entries. */
    #define AT_PAGESZ       6       /* Page size in bytes. */
    #define AT_BASE         7       /* Interpreter's base address. */
    #define AT_FLAGS        8       /* Flags (unused). */
    #define AT_ENTRY        9       /* Where interpreter should transfer control. */
    
    #define AT_BRK          10      /* Starting point for sbrk and brk. */
    #define AT_DEBUG        11      /* Debugging level. */
    
    #define AT_NOTELF       10      /* Program is not ELF ?? */
    #define AT_UID          11      /* Real uid. */
    #define AT_EUID         12      /* Effective uid. */
    #define AT_GID          13      /* Real gid. */
    #define AT_EGID         14      /* Effective gid. */
    
    #define AT_COUNT        15      /* Count of defined aux entry types. */
    
    #define R_ARM_NONE              0       /* No relocation. */
    #define R_ARM_PC24              1
    #define R_ARM_ABS32             2
    #define R_ARM_REL32             3
    #define R_ARM_PC13              4
    #define R_ARM_ABS16             5
    #define R_ARM_ABS12             6
    #define R_ARM_THM_ABS5          7
    #define R_ARM_ABS8              8
    #define R_ARM_SBREL32           9
    #define R_ARM_THM_PC22          10
    #define R_ARM_THM_PC8           11
    #define R_ARM_AMP_VCALL9        12
    #define R_ARM_SWI24             13
    #define R_ARM_THM_SWI8          14
   #define R_ARM_XPC25             15
   #define R_ARM_THM_XPC22         16
   #define R_ARM_COPY              20      /* Copy data from shared object. */
   #define R_ARM_GLOB_DAT          21      /* Set GOT entry to data address. */
   #define R_ARM_JUMP_SLOT         22      /* Set GOT entry to code address. */
   #define R_ARM_RELATIVE          23      /* Add load address of shared object. */
   #define R_ARM_GOTOFF            24      /* Add GOT-relative symbol address. */
   #define R_ARM_GOTPC             25      /* Add PC-relative GOT table address. */
   #define R_ARM_GOT32             26      /* Add PC-relative GOT offset. */
   #define R_ARM_PLT32             27      /* Add PC-relative PLT offset. */
   #define R_ARM_GNU_VTENTRY       100
   #define R_ARM_GNU_VTINHERIT     101
   #define R_ARM_RSBREL32          250
   #define R_ARM_THM_RPC22         251
   #define R_ARM_RREL32            252
   #define R_ARM_RABS32            253
   #define R_ARM_RPC24             254
   #define R_ARM_RBASE             255
   
   #define R_ARM_COUNT             33      /* Count of defined relocation types. */
   
   
   /* Define "machine" characteristics */
   #define ELF_TARG_CLASS  ELFCLASS32
   #ifdef __ARMEB__
   #define ELF_TARG_DATA   ELFDATA2MSB
   #else
   #define ELF_TARG_DATA   ELFDATA2LSB
   #endif
   #define ELF_TARG_MACH   EM_ARM
   #define ELF_TARG_VER    1
   
   /* 
    * Magic number for the elf trampoline, chosen wisely to be an immediate 
    * value.
    */
   #define MAGIC_TRAMP_NUMBER      0x5c000003
   #endif /* !_MACHINE_ELF_H_ */

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