arch/m32r/include/asm/elf.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_M32R__ELF_H
   3 #define _ASM_M32R__ELF_H
   4
   5 /*
   6  * ELF-specific definitions.
   7  *
   8  * Copyright (C) 1999-2004, Renesas Technology Corp.
   9  *      Hirokazu Takata <takata at linux-m32r.org>
  10  */
  11
  12 #include <asm/ptrace.h>
  13 #include <asm/user.h>
  14 #include <asm/page.h>
  15
  16 /* M32R relocation types  */
  17 #define R_M32R_NONE             0
  18 #define R_M32R_16               1
  19 #define R_M32R_32               2
  20 #define R_M32R_24               3
  21 #define R_M32R_10_PCREL         4
  22 #define R_M32R_18_PCREL         5
  23 #define R_M32R_26_PCREL         6
  24 #define R_M32R_HI16_ULO         7
  25 #define R_M32R_HI16_SLO         8
  26 #define R_M32R_LO16             9
  27 #define R_M32R_SDA16            10
  28 #define R_M32R_GNU_VTINHERIT    11
  29 #define R_M32R_GNU_VTENTRY      12
  30
  31 #define R_M32R_16_RELA          33
  32 #define R_M32R_32_RELA          34
  33 #define R_M32R_24_RELA          35
  34 #define R_M32R_10_PCREL_RELA    36
  35 #define R_M32R_18_PCREL_RELA    37
  36 #define R_M32R_26_PCREL_RELA    38
  37 #define R_M32R_HI16_ULO_RELA    39
  38 #define R_M32R_HI16_SLO_RELA    40
  39 #define R_M32R_LO16_RELA        41
  40 #define R_M32R_SDA16_RELA       42
  41 #define R_M32R_RELA_GNU_VTINHERIT       43
  42 #define R_M32R_RELA_GNU_VTENTRY 44
  43
  44 #define R_M32R_GOT24            48
  45 #define R_M32R_26_PLTREL        49
  46 #define R_M32R_COPY             50
  47 #define R_M32R_GLOB_DAT         51
  48 #define R_M32R_JMP_SLOT         52
  49 #define R_M32R_RELATIVE         53
  50 #define R_M32R_GOTOFF           54
  51 #define R_M32R_GOTPC24          55
  52 #define R_M32R_GOT16_HI_ULO     56
  53 #define R_M32R_GOT16_HI_SLO     57
  54 #define R_M32R_GOT16_LO         58
  55 #define R_M32R_GOTPC_HI_ULO     59
  56 #define R_M32R_GOTPC_HI_SLO     60
  57 #define R_M32R_GOTPC_LO         61
  58 #define R_M32R_GOTOFF_HI_ULO    62
  59 #define R_M32R_GOTOFF_HI_SLO    63
  60 #define R_M32R_GOTOFF_LO        64
  61
  62 #define R_M32R_NUM              256
  63
  64 /*
  65  * ELF register definitions..
  66  */
  67 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
  68
  69 typedef unsigned long elf_greg_t;
  70 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  71
  72 /* We have no FP mumumu.  */
  73 typedef double elf_fpreg_t;
  74 typedef elf_fpreg_t elf_fpregset_t;
  75
  76 /*
  77  * This is used to ensure we don't load something for the wrong architecture.
  78  */
  79 #define elf_check_arch(x) \
  80         (((x)->e_machine == EM_M32R) || ((x)->e_machine == EM_CYGNUS_M32R))
  81
  82 /*
  83  * These are used to set parameters in the core dumps.
  84  */
  85 #define ELF_CLASS       ELFCLASS32
  86 #if defined(__LITTLE_ENDIAN__)
  87 #define ELF_DATA        ELFDATA2LSB
  88 #elif defined(__BIG_ENDIAN__)
  89 #define ELF_DATA        ELFDATA2MSB
  90 #else
  91 #error no endian defined
  92 #endif
  93 #define ELF_ARCH        EM_M32R
  94
  95 /* r0 is set by ld.so to a pointer to a function which might be
  96  * registered using 'atexit'.  This provides a mean for the dynamic
  97  * linker to call DT_FINI functions for shared libraries that have
  98  * been loaded before the code runs.
  99  *
 100  * So that we can use the same startup file with static executables,
 101  * we start programs with a value of 0 to indicate that there is no
 102  * such function.
 103  */
 104 #define ELF_PLAT_INIT(_r, load_addr)    (_r)->r0 = 0
 105
 106 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
 107
 108 /*
 109  * This is the location that an ET_DYN program is loaded if exec'ed.
 110  * Typical use of this is to invoke "./ld.so someprog" to test out a
 111  * new version of the loader.  We need to make sure that it is out of
 112  * the way of the program that it will "exec", and that there is
 113  * sufficient room for the brk.
 114  */
 115 #define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
 116
 117 /* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
 118    now struct_user_regs, they are different) */
 119
 120 #define ELF_CORE_COPY_REGS(pr_reg, regs)  \
 121         memcpy((char *)pr_reg, (char *)regs, sizeof (struct pt_regs));
 122
 123 /* This yields a mask that user programs can use to figure out what
 124    instruction set this CPU supports.  */
 125 #define ELF_HWCAP       (0)
 126
 127 /* This yields a string that ld.so will use to load implementation
 128    specific libraries for optimization.  This is more specific in
 129    intent than poking at uname or /proc/cpuinfo.  */
 130 #define ELF_PLATFORM    (NULL)
 131
 132 #endif  /* _ASM_M32R__ELF_H */