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libjit/jit/jit-elf-defs.h  view on Meta::CPAN

typedef struct
{
  Elf32_Half	vn_version;		/* Version of structure */
  Elf32_Half	vn_cnt;			/* Number of associated aux entries */
  Elf32_Word	vn_file;		/* Offset of filename for this
					   dependency */
  Elf32_Word	vn_aux;			/* Offset in bytes to vernaux array */
  Elf32_Word	vn_next;		/* Offset in bytes to next verneed
					   entry */
} Elf32_Verneed;

typedef struct
{
  Elf64_Half	vn_version;		/* Version of structure */
  Elf64_Half	vn_cnt;			/* Number of associated aux entries */
  Elf64_Word	vn_file;		/* Offset of filename for this
					   dependency */
  Elf64_Word	vn_aux;			/* Offset in bytes to vernaux array */
  Elf64_Word	vn_next;		/* Offset in bytes to next verneed
					   entry */
} Elf64_Verneed;


/* Legal values for vn_version (version revision).  */
#define VER_NEED_NONE	 0		/* No version */
#define VER_NEED_CURRENT 1		/* Current version */
#define VER_NEED_NUM	 2		/* Given version number */

/* Auxiliary needed version information.  */

typedef struct
{
  Elf32_Word	vna_hash;		/* Hash value of dependency name */
  Elf32_Half	vna_flags;		/* Dependency specific information */
  Elf32_Half	vna_other;		/* Unused */
  Elf32_Word	vna_name;		/* Dependency name string offset */
  Elf32_Word	vna_next;		/* Offset in bytes to next vernaux
					   entry */
} Elf32_Vernaux;

typedef struct
{
  Elf64_Word	vna_hash;		/* Hash value of dependency name */
  Elf64_Half	vna_flags;		/* Dependency specific information */
  Elf64_Half	vna_other;		/* Unused */
  Elf64_Word	vna_name;		/* Dependency name string offset */
  Elf64_Word	vna_next;		/* Offset in bytes to next vernaux
					   entry */
} Elf64_Vernaux;


/* Legal values for vna_flags.  */
#define VER_FLG_WEAK	0x2		/* Weak version identifier */


/* Auxiliary vector.  */

/* This vector is normally only used by the program interpreter.  The
   usual definition in an ABI supplement uses the name auxv_t.  The
   vector is not usually defined in a standard <elf.h> file, but it
   can't hurt.  We rename it to avoid conflicts.  The sizes of these
   types are an arrangement between the exec server and the program
   interpreter, so we don't fully specify them here.  */

typedef struct
{
  int a_type;			/* Entry type */
  union
    {
      long int a_val;		/* Integer value */
      void *a_ptr;		/* Pointer value */
      void (*a_fcn) (void);	/* Function pointer value */
    } a_un;
} Elf32_auxv_t;

typedef struct
{
  long int a_type;		/* Entry type */
  union
    {
      long int a_val;		/* Integer value */
      void *a_ptr;		/* Pointer value */
      void (*a_fcn) (void);	/* Function pointer value */
    } a_un;
} Elf64_auxv_t;

/* Legal values for a_type (entry type).  */

#define AT_NULL		0		/* End of vector */
#define AT_IGNORE	1		/* Entry should be ignored */
#define AT_EXECFD	2		/* File descriptor of program */
#define AT_PHDR		3		/* Program headers for program */
#define AT_PHENT	4		/* Size of program header entry */
#define AT_PHNUM	5		/* Number of program headers */
#define AT_PAGESZ	6		/* System page size */
#define AT_BASE		7		/* Base address of interpreter */
#define AT_FLAGS	8		/* Flags */
#define AT_ENTRY	9		/* Entry point of program */
#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_CLKTCK	17		/* Frequency of times() */

/* Some more special a_type values describing the hardware.  */
#define AT_PLATFORM	15		/* String identifying platform.  */
#define AT_HWCAP	16		/* Machine dependent hints about
					   processor capabilities.  */

/* This entry gives some information about the FPU initialization
   performed by the kernel.  */
#define AT_FPUCW	18		/* Used FPU control word.  */

/* Cache block sizes.  */
#define AT_DCACHEBSIZE	19		/* Data cache block size.  */
#define AT_ICACHEBSIZE	20		/* Instruction cache block size.  */
#define AT_UCACHEBSIZE	21		/* Unified cache block size.  */

/* A special ignored value for PPC, used by the kernel to control the
   interpretation of the AUXV. Must be > 16.  */