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  */
  43 struct elf32_hdr;
  44 extern 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