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

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   4 */
   5
   6#ifndef __ASM_ARC_ELF_H
   7#define __ASM_ARC_ELF_H
   8
   9#include <linux/types.h>
  10#include <linux/elf-em.h>
  11#include <uapi/asm/elf.h>
  12
  13#define EM_ARC_INUSE            (IS_ENABLED(CONFIG_ISA_ARCOMPACT) ? \
  14                                        EM_ARCOMPACT : EM_ARCV2)
  15
  16/* ARC Relocations (kernel Modules only) */
  17#define  R_ARC_32               0x4
  18#define  R_ARC_32_ME            0x1B
  19#define  R_ARC_32_PCREL         0x31
  20
  21/*to set parameters in the core dumps */
  22#define ELF_ARCH                EM_ARC_INUSE
  23#define ELF_CLASS               ELFCLASS32
  24
  25#ifdef CONFIG_CPU_BIG_ENDIAN
  26#define ELF_DATA                ELFDATA2MSB
  27#else
  28#define ELF_DATA                ELFDATA2LSB
  29#endif
  30
  31/*
  32 * To ensure that
  33 *  -we don't load something for the wrong architecture.
  34 *  -The userspace is using the correct syscall ABI
  35 */
  36struct elf32_hdr;
  37extern int elf_check_arch(const struct elf32_hdr *);
  38#define elf_check_arch  elf_check_arch
  39
  40#define CORE_DUMP_USE_REGSET
  41
  42#define ELF_EXEC_PAGESIZE       PAGE_SIZE
  43
  44/*
  45 * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  46 * use of this is to invoke "./ld.so someprog" to test out a new version of
  47 * the loader.  We need to make sure that it is out of the way of the program
  48 * that it will "exec", and that there is sufficient room for the brk.
  49 */
  50#define ELF_ET_DYN_BASE         (2UL * TASK_SIZE / 3)
  51
  52/*
  53 * When the program starts, a1 contains a pointer to a function to be
  54 * registered with atexit, as per the SVR4 ABI.  A value of 0 means we
  55 * have no such handler.
  56 */
  57#define ELF_PLAT_INIT(_r, load_addr)    ((_r)->r0 = 0)
  58
  59/*
  60 * This yields a mask that user programs can use to figure out what
  61 * instruction set this cpu supports.
  62 */
  63#define ELF_HWCAP       (0)
  64
  65/*
  66 * This yields a string that ld.so will use to load implementation
  67 * specific libraries for optimization.  This is more specific in
  68 * intent than poking at uname or /proc/cpuinfo.
  69 */
  70#define ELF_PLATFORM    (NULL)
  71
  72#endif
  73