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  */
  36 struct elf32_hdr;
  37 extern 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