freebsd-skq/sys/ia64/include/elf.h
kib d9f088a03e Supply some useful information to the started image using ELF aux vectors.
In particular, provide pagesize and pagesizes array, the canary value
for SSP use, number of host CPUs and osreldate.

Tested by:	marius (sparc64)
MFC after:	1 month
2010-08-17 08:55:45 +00:00

154 lines
4.7 KiB
C

/*-
* 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
/*
* ELF definitions for the IA-64 architecture.
*/
#ifndef __ELF_WORD_SIZE
#define __ELF_WORD_SIZE 64
#endif
#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
#include <sys/elf_generic.h>
#define ELF_ARCH EM_IA_64
#define ELF_ARCH32 EM_386
#define ELF_MACHINE_OK(x) ((x) == EM_IA_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 */
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;
} 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_COUNT 22 /* Count of defined aux entry types. */
/*
* Values for e_flags.
*/
#define EF_IA_64_MASKOS 0x00ff000f
#define EF_IA_64_ABI64 0x00000010
#define EF_IA_64_REDUCEDFP 0x00000020
#define EF_IA_64_CONS_GP 0x00000040
#define EF_IA_64_NOFUNCDESC_CONS_GP 0x00000080
#define EF_IA_64_ABSOLUTE 0x00000100
#define EF_IA_64_ARCH 0xff000000
/*
* Segment types.
*/
#define PT_IA_64_ARCHEXT 0x70000000
#define PT_IA_64_UNWIND 0x70000001
/*
* Segment attributes.
*/
#define PF_IA_64_NORECOV 0x80000000
/*
* Section types.
*/
#define SHT_IA_64_EXT 0x70000000
#define SHT_IA_64_UNWIND 0x70000001
#define SHT_IA_64_LOPSREG 0x78000000
#define SHT_IA_64_HIPSREG 0x7fffffff
/*
* Section attribute flags.
*/
#define SHF_IA_64_SHORT 0x10000000
#define SHF_IA_64_NORECOV 0x20000000
/* 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_IA_64
#define ELF_TARG_VER 1
/* Processor specific dynmamic section tags. */
#define DT_IA_64_PLT_RESERVE 0x70000000
#define ET_DYN_LOAD_ADDR 0x2500000000000000
#endif /* !_MACHINE_ELF_H_ */