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elf-amd64.h

/*-
 * 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: src/sys/amd64/include/elf.h,v 1.18 2004/08/03 08:21:48 dfr Exp $
 */

#ifndef ___k_kLdrFmts_elf_amd64_h___
#define     ___k_kLdrFmts_elf_amd64_h___

/*
 * ELF definitions for the AMD64 architecture.
 */

#if 0 /** @todo Auxiliary vector entries. */
/*
 * Auxiliary vector entries for passing information to the interpreter.
 *
 * The i386 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 {
            int   a_val;            /* Integer value. */
      } 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);

/* 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 for i386). */
#define     AT_ENTRY    9     /* Where interpreter should transfer control. */

/*
 * The following non-standard values are used for passing information
 * from John Polstra's testbed program to the dynamic linker.  These
 * are expected to go away soon.
 *
 * Unfortunately, these overlap the Linux non-standard values, so they
 * must not be used in the same context.
 */
#define     AT_BRK            10    /* Starting point for sbrk and brk. */
#define     AT_DEBUG    11    /* Debugging level. */

/*
 * The following non-standard values are used in Linux ELF binaries.
 */
#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. */

#endif /* [todo] */

/*
 * Relocation types.
 */

#define     R_X86_64_NONE     0     /* No relocation. */
#define     R_X86_64_64 1     /* Add 64 bit symbol value. */
#define     R_X86_64_PC32     2     /* PC-relative 32 bit signed sym value. */
#define     R_X86_64_GOT32    3     /* PC-relative 32 bit GOT offset. */
#define     R_X86_64_PLT32    4     /* PC-relative 32 bit PLT offset. */
#define     R_X86_64_COPY     5     /* Copy data from shared object. */
#define     R_X86_64_GLOB_DAT 6     /* Set GOT entry to data address. */
#define     R_X86_64_JMP_SLOT 7     /* Set GOT entry to code address. */
#define     R_X86_64_RELATIVE 8     /* Add load address of shared object. */
#define     R_X86_64_GOTPCREL 9     /* Add 32 bit signed pcrel offset to GOT. */
#define     R_X86_64_32 10    /* Add 32 bit zero extended symbol value */
#define     R_X86_64_32S      11    /* Add 32 bit sign extended symbol value */
#define     R_X86_64_16 12    /* Add 16 bit zero extended symbol value */
#define     R_X86_64_PC16     13    /* Add 16 bit signed extended pc relative symbol value */
#define     R_X86_64_8  14    /* Add 8 bit zero extended symbol value */
#define     R_X86_64_PC8      15    /* Add 8 bit signed extended pc relative symbol value */
#define     R_X86_64_DTPMOD64 16    /* ID of module containing symbol */
#define     R_X86_64_DTPOFF64 17    /* Offset in TLS block */
#define     R_X86_64_TPOFF64 18     /* Offset in static TLS block */
#define     R_X86_64_TLSGD    19    /* PC relative offset to GD GOT entry */
#define     R_X86_64_TLSLD    20    /* PC relative offset to LD GOT entry */
#define     R_X86_64_DTPOFF32 21    /* Offset in TLS block */
#define     R_X86_64_GOTTPOFF 22    /* PC relative offset to IE GOT entry */
#define     R_X86_64_TPOFF32 23     /* Offset in static TLS block */

#define     R_X86_64_COUNT    24    /* Count of defined relocation types. */

#endif


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