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_S25H_PCREL       0x10
  27 #define  R_ARC_S25W_PCREL       0x11
  28
  29 /*to set parameters in the core dumps */
  30 #define ELF_ARCH                EM_ARCOMPACT
  31 #define ELF_CLASS               ELFCLASS32
  32
  33 #ifdef CONFIG_CPU_BIG_ENDIAN
  34 #define ELF_DATA                ELFDATA2MSB
  35 #else
  36 #define ELF_DATA                ELFDATA2LSB
  37 #endif
  38
  39 /*
  40  * To ensure that
  41  *  -we don't load something for the wrong architecture.
  42  *  -The userspace is using the correct syscall ABI
  43  */
  44 struct elf32_hdr;
  45 extern int elf_check_arch(const struct elf32_hdr *);
  46 #define elf_check_arch  elf_check_arch
  47
  48 #define CORE_DUMP_USE_REGSET
  49
  50 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
  51
  52 /*
  53  * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  54  * use of this is to invoke "./ld.so someprog" to test out a new version of
  55  * the loader.  We need to make sure that it is out of the way of the program
  56  * that it will "exec", and that there is sufficient room for the brk.
  57  */
  58 #define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)
  59
  60 /*
  61  * When the program starts, a1 contains a pointer to a function to be
  62  * registered with atexit, as per the SVR4 ABI.  A value of 0 means we
  63  * have no such handler.
  64  */
  65 #define ELF_PLAT_INIT(_r, load_addr)    ((_r)->r0 = 0)
  66
  67 /*
  68  * This yields a mask that user programs can use to figure out what
  69  * instruction set this cpu supports.
  70  */
  71 #define ELF_HWCAP       (0)
  72
  73 /*
  74  * This yields a string that ld.so will use to load implementation
  75  * specific libraries for optimization.  This is more specific in
  76  * intent than poking at uname or /proc/cpuinfo.
  77  */
  78 #define ELF_PLATFORM    (NULL)
  79
  80 #endif