text: /*-
   * 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
  
  #if defined(__i386__) || defined(_MACHINE_ELF_WANT_32BIT)
  
  /*
   * ELF definitions for the i386 architecture.
   */
  
  #include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
  #if defined(__ELF_WORD_SIZE) && __ELF_WORD_SIZE == 64
  #include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
  #endif
  
  #ifndef __ELF_WORD_SIZE
  #define	__ELF_WORD_SIZE	32	/* Used by <sys/elf_generic.h> */
  #endif
  
  #include <sys/elf_generic.h>
  
  #define	ELF_ARCH	EM_386
  
  #define	ELF_MACHINE_OK(x) ((x) == EM_386 || (x) == EM_486)
  
  /*
   * 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 {
  		long	a_val;		/* Integer value. */
  		void	*a_ptr;		/* Address. */
  		void	(*a_fcn)(void);	/* Function pointer (not used). */
  	} a_un;
  } Elf32_Auxinfo;
  
  #if __ELF_WORD_SIZE == 64
  /* Fake for amd64 loader support */
  typedef struct {
  	int fake;
  } Elf64_Auxinfo;
  #endif
  
  __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. */
  #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_EXECPATH	15	/* Path to the executable. */
  #define	AT_CANARY	16	/* Canary for SSP. */
  #define	AT_CANARYLEN	17	/* Length of the canary. */
  #define	AT_OSRELDATE	18	/* OSRELDATE. */
  #define	AT_NCPUS	19	/* Number of CPUs. */
  #define	AT_PAGESIZES	20	/* Pagesizes. */
  #define	AT_PAGESIZESLEN	21	/* Number of pagesizes. */
  #define	AT_TIMEKEEP	22	/* Pointer to timehands. */
  #define	AT_STACKPROT	23	/* Initial stack protection. */
  
  #define	AT_COUNT	24	/* Count of defined aux entry types. */
  
  /*
   * Relocation types.
   */
  
  #define	R_386_COUNT	38	/* Count of defined relocation types. */
  
  /* Define "machine" characteristics */
  #define	ELF_TARG_CLASS	ELFCLASS32
  #define	ELF_TARG_DATA	ELFDATA2LSB
  #define	ELF_TARG_MACH	EM_386
  #define	ELF_TARG_VER	1
  
  #define	ET_DYN_LOAD_ADDR 0x01001000
  
  #elif defined(__amd64__)
  
  /*
   * ELF definitions for the AMD64 architecture.
   */
  
  #ifndef __ELF_WORD_SIZE
  #define	__ELF_WORD_SIZE	64	/* Used by <sys/elf_generic.h> */
  #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>
  
  #define	ELF_ARCH	EM_X86_64
  #define	ELF_ARCH32	EM_386
  
  #define	ELF_MACHINE_OK(x) ((x) == EM_X86_64)
  
  /*
   * 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. */
  #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_EXECPATH	15	/* Path to the executable. */
  #define	AT_CANARY	16	/* Canary for SSP */
  #define	AT_CANARYLEN	17	/* Length of the canary. */
  #define	AT_OSRELDATE	18	/* OSRELDATE. */
  #define	AT_NCPUS	19	/* Number of CPUs. */
  #define	AT_PAGESIZES	20	/* Pagesizes. */
  #define	AT_PAGESIZESLEN	21	/* Number of pagesizes. */
  #define	AT_TIMEKEEP	22	/* Pointer to timehands. */
  #define	AT_STACKPROT	23	/* Initial stack protection. */
  
  #define	AT_COUNT	24	/* Count of defined aux entry types. */
  
  /*
   * Relocation types.
   */
  
  #define	R_X86_64_COUNT	24	/* Count of defined relocation types. */
  
  /* Define "machine" characteristics */
  #if __ELF_WORD_SIZE == 32
  #define ELF_TARG_CLASS  ELFCLASS32
  #else
  #define ELF_TARG_CLASS  ELFCLASS64
  #endif
  #define	ELF_TARG_DATA	ELFDATA2LSB
  #define	ELF_TARG_MACH	EM_X86_64
  #define	ELF_TARG_VER	1
  
  #if __ELF_WORD_SIZE == 32
  #define	ET_DYN_LOAD_ADDR 0x01001000
  #else
  #define	ET_DYN_LOAD_ADDR 0x01021000
  #endif
  
  #endif /* __i386__, __amd64__ */
  
  #endif /* !_MACHINE_ELF_H_ */
  