LXR linux/arch/arc/include/asm/elf.h

   1/*
   2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 as
   6 * published by the Free Software Foundation.
   7 */
   8
   9#ifndef __ASM_ARC_ELF_H
  10#define __ASM_ARC_ELF_H
  11
  12#include <linux/types.h>
  13#include <uapi/asm/elf.h>
  14
  15/* These ELF defines belong to uapi but libc elf.h already defines them */
  16#define EM_ARCOMPACT            93
  17
  18#define EM_ARCV2                195     /* ARCv2 Cores */
  19
  20#define EM_ARC_INUSE            (IS_ENABLED(CONFIG_ISA_ARCOMPACT) ? \
  21                                        EM_ARCOMPACT : EM_ARCV2)
  22
  23/* ARC Relocations (kernel Modules only) */
  24#define  R_ARC_32               0x4
  25#define  R_ARC_32_ME            0x1B
  26#define  R_ARC_32_PCREL         0x31
  27
  28/*to set parameters in the core dumps */
  29#define ELF_ARCH                EM_ARCOMPACT
  30#define ELF_CLASS               ELFCLASS32
  31
  32#ifdef CONFIG_CPU_BIG_ENDIAN
  33#define ELF_DATA                ELFDATA2MSB
  34#else
  35#define ELF_DATA                ELFDATA2LSB
  36#endif
  37
  38/*
  39 * To ensure that
  40 *  -we don't load something for the wrong architecture.
  41 *  -The userspace is using the correct syscall ABI
  42 */
  43struct elf32_hdr;
  44extern int elf_check_arch(const struct elf32_hdr *);
  45#define elf_check_arch  elf_check_arch
  46
  47#define CORE_DUMP_USE_REGSET
  48
  49#define ELF_EXEC_PAGESIZE       PAGE_SIZE
  50
  51/*
  52 * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  53 * use of this is to invoke "./ld.so someprog" to test out a new version of
  54 * the loader.  We need to make sure that it is out of the way of the program
  55 * that it will "exec", and that there is sufficient room for the brk.
  56 */
  57#define ELF_ET_DYN_BASE         (2UL * TASK_SIZE / 3)
  58
  59/*
  60 * When the program starts, a1 contains a pointer to a function to be
  61 * registered with atexit, as per the SVR4 ABI.  A value of 0 means we
  62 * have no such handler.
  63 */
  64#define ELF_PLAT_INIT(_r, load_addr)    ((_r)->r0 = 0)
  65
  66/*
  67 * This yields a mask that user programs can use to figure out what
  68 * instruction set this cpu supports.
  69 */
  70#define ELF_HWCAP       (0)
  71
  72/*
  73 * This yields a string that ld.so will use to load implementation
  74 * specific libraries for optimization.  This is more specific in
  75 * intent than poking at uname or /proc/cpuinfo.
  76 */
  77#define ELF_PLATFORM    (NULL)
  78
  79#endif
  80