arch/score/include/asm/elf.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_SCORE_ELF_H
   3 #define _ASM_SCORE_ELF_H
   4
   5 #include <linux/ptrace.h>
   6
   7 #define EM_SCORE7       135
   8
   9 /* Relocation types. */
  10 #define R_SCORE_NONE            0
  11 #define R_SCORE_HI16            1
  12 #define R_SCORE_LO16            2
  13 #define R_SCORE_BCMP            3
  14 #define R_SCORE_24              4
  15 #define R_SCORE_PC19            5
  16 #define R_SCORE16_11            6
  17 #define R_SCORE16_PC8           7
  18 #define R_SCORE_ABS32           8
  19 #define R_SCORE_ABS16           9
  20 #define R_SCORE_DUMMY2          10
  21 #define R_SCORE_GP15            11
  22 #define R_SCORE_GNU_VTINHERIT   12
  23 #define R_SCORE_GNU_VTENTRY     13
  24 #define R_SCORE_GOT15           14
  25 #define R_SCORE_GOT_LO16        15
  26 #define R_SCORE_CALL15          16
  27 #define R_SCORE_GPREL32         17
  28 #define R_SCORE_REL32           18
  29 #define R_SCORE_DUMMY_HI16      19
  30 #define R_SCORE_IMM30           20
  31 #define R_SCORE_IMM32           21
  32
  33 /* ELF register definitions */
  34 typedef unsigned long   elf_greg_t;
  35
  36 #define ELF_NGREG       (sizeof(struct pt_regs) / sizeof(elf_greg_t))
  37 typedef elf_greg_t      elf_gregset_t[ELF_NGREG];
  38
  39 /* Score does not have fp regs. */
  40 typedef double          elf_fpreg_t;
  41 typedef elf_fpreg_t     elf_fpregset_t;
  42
  43 #define elf_check_arch(x)       ((x)->e_machine == EM_SCORE7)
  44
  45 /*
  46  * These are used to set parameters in the core dumps.
  47  */
  48 #define ELF_CLASS       ELFCLASS32
  49
  50 /*
  51  * These are used to set parameters in the core dumps.
  52  */
  53 #define ELF_DATA        ELFDATA2LSB
  54 #define ELF_ARCH        EM_SCORE7
  55
  56 struct task_struct;
  57 struct pt_regs;
  58
  59 #define CORE_DUMP_USE_REGSET
  60 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
  61
  62 /* This yields a mask that user programs can use to figure out what
  63    instruction set this cpu supports.  This could be done in userspace,
  64    but it's not easy, and we've already done it here.  */
  65
  66 #define ELF_HWCAP       (0)
  67
  68 /* This yields a string that ld.so will use to load implementation
  69    specific libraries for optimization.  This is more specific in
  70    intent than poking at uname or /proc/cpuinfo.
  71
  72    For the moment, we have only optimizations for the Intel generations,
  73    but that could change... */
  74
  75 #define ELF_PLATFORM    (NULL)
  76
  77 #define ELF_PLAT_INIT(_r, load_addr)                                    \
  78 do {                                                                    \
  79         _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;      \
  80         _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;      \
  81         _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;   \
  82         _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;  \
  83         _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;  \
  84         _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;  \
  85         _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;  \
  86         _r->regs[30] = _r->regs[31] = 0;                                \
  87 } while (0)
  88
  89 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  90    use of this is to invoke "./ld.so someprog" to test out a new version of
  91    the loader.  We need to make sure that it is out of the way of the program
  92    that it will "exec", and that there is sufficient room for the brk.  */
  93
  94 #ifndef ELF_ET_DYN_BASE
  95 #define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
  96 #endif
  97
  98 #endif /* _ASM_SCORE_ELF_H */