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
  30 typedef unsigned long elf_greg_t;
  31
  32 typedef 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
  41 typedef 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. */
  72 struct task_struct;
  73 extern 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
  87 struct linux_binprm;
  88 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
  89                                        int uses_interp);
  90 #endif /* __ASM_CSKY_ELF_H */