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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2
   3#ifndef __ASM_CSKY_ELF_H
   4#define __ASM_CSKY_ELF_H
   5
   6#include <asm/ptrace.h>
   7#include <abi/regdef.h>
   8
   9#define ELF_ARCH EM_CSKY
  10#define EM_CSKY_OLD 39
  11
  12/* CSKY Relocations */
  13#define R_CSKY_NONE               0
  14#define R_CSKY_32                 1
  15#define R_CSKY_PCIMM8BY4          2
  16#define R_CSKY_PCIMM11BY2         3
  17#define R_CSKY_PCIMM4BY2          4
  18#define R_CSKY_PC32               5
  19#define R_CSKY_PCRELJSR_IMM11BY2  6
  20#define R_CSKY_GNU_VTINHERIT      7
  21#define R_CSKY_GNU_VTENTRY        8
  22#define R_CSKY_RELATIVE           9
  23#define R_CSKY_COPY               10
  24#define R_CSKY_GLOB_DAT           11
  25#define R_CSKY_JUMP_SLOT          12
  26#define R_CSKY_ADDR_HI16          24
  27#define R_CSKY_ADDR_LO16          25
  28#define R_CSKY_PCRELJSR_IMM26BY2  40
  29
  30typedef unsigned long elf_greg_t;
  31
  32typedef struct user_fp elf_fpregset_t;
  33
  34/*
  35 * In gdb/bfd elf32-csky.c, csky_elf_grok_prstatus() use fixed size of
  36 * elf_prstatus. It's 148 for abiv1 and 220 for abiv2, the size is enough
  37 * for coredump and no need full sizeof(struct pt_regs).
  38 */
  39#define ELF_NGREG ((sizeof(struct pt_regs) / sizeof(elf_greg_t)) - 2)
  40
  41typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  42
  43/*
  44 * This is used to ensure we don't load something for the wrong architecture.
  45 */
  46#define elf_check_arch(x) (((x)->e_machine == ELF_ARCH) || \
  47                           ((x)->e_machine == EM_CSKY_OLD))
  48
  49/*
  50 * These are used to set parameters in the core dumps.
  51 */
  52#define ELF_EXEC_PAGESIZE               4096
  53#define ELF_CLASS                       ELFCLASS32
  54#define ELF_PLAT_INIT(_r, load_addr)    { _r->a0 = 0; }
  55
  56#ifdef __cskyBE__
  57#define ELF_DATA        ELFDATA2MSB
  58#else
  59#define ELF_DATA        ELFDATA2LSB
  60#endif
  61
  62/*
  63 * This is the location that an ET_DYN program is loaded if exec'ed. Typical
  64 * use of this is to invoke "./ld.so someprog" to test out a new version of
  65 * the loader.  We need to make sure that it is out of the way of the program
  66 * that it will "exec", and that there is sufficient room for the brk.
  67 */
  68#define ELF_ET_DYN_BASE 0x0UL
  69#include <abi/elf.h>
  70
  71/* Similar, but for a thread other than current. */
  72struct task_struct;
  73extern int dump_task_regs(struct task_struct *tsk, elf_gregset_t *elf_regs);
  74#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
  75
  76#define ELF_HWCAP       (0)
  77
  78/*
  79 * This yields a string that ld.so will use to load implementation specific
  80 * libraries for optimization. This is more specific in intent than poking
  81 * at uname or /proc/cpuinfo.
  82 */
  83#define ELF_PLATFORM            (NULL)
  84#define SET_PERSONALITY(ex)     set_personality(PER_LINUX)
  85
  86#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
  87struct linux_binprm;
  88extern int arch_setup_additional_pages(struct linux_binprm *bprm,
  89                                       int uses_interp);
  90#endif /* __ASM_CSKY_ELF_H */
  91