include/elf/rl78.h

   1 /* RL78 ELF support for BFD.
   2    Copyright (C) 2008-2021 Free Software Foundation, Inc.
   3
   4    This file is part of BFD, the Binary File Descriptor library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  19
  20 #ifndef _ELF_RL78_H
  21 #define _ELF_RL78_H
  22
  23 #include "elf/reloc-macros.h"
  24
  25 /* Note that there are a few internal relocation types used by the
  26    linker to do link-time relaxation.  If you update this file, please
  27    check elf32-rl78.c to see if any of the internal relocations need to
  28    be, er, relocated.  */
  29
  30 /* Preliminary relocations.  */
  31 START_RELOC_NUMBERS (elf_rl78_reloc_type)
  32
  33   RELOC_NUMBER (R_RL78_NONE,         0x00)
  34   /* These are for data, and are bi-endian.  */
  35   RELOC_NUMBER (R_RL78_DIR32,        0x01) /* Was: R_RL78_32.  */
  36   RELOC_NUMBER (R_RL78_DIR24S,       0x02) /* Was: R_RL78_24.  */
  37   RELOC_NUMBER (R_RL78_DIR16,        0x03)
  38   RELOC_NUMBER (R_RL78_DIR16U,       0x04) /* Was: R_RL78_16_UNS.  */
  39   RELOC_NUMBER (R_RL78_DIR16S,       0x05) /* Was: R_RL78_16.  */
  40   RELOC_NUMBER (R_RL78_DIR8,         0x06)
  41   RELOC_NUMBER (R_RL78_DIR8U,        0x07) /* Was: R_RL78_8_UNS.  */
  42   RELOC_NUMBER (R_RL78_DIR8S,        0x08) /* Was: R_RL78_8.  */
  43
  44   /* Signed pc-relative values.  */
  45   RELOC_NUMBER (R_RL78_DIR24S_PCREL, 0x09) /* Was: R_RL78_24_PCREL.  */
  46   RELOC_NUMBER (R_RL78_DIR16S_PCREL, 0x0a) /* Was: R_RL78_16_PCREL.  */
  47   RELOC_NUMBER (R_RL78_DIR8S_PCREL,  0x0b) /* Was: R_RL78_8_PCREL.  */
  48
  49   /* These are for fields in the instructions.  */
  50   RELOC_NUMBER (R_RL78_DIR16UL,      0x0c)
  51   RELOC_NUMBER (R_RL78_DIR16UW,      0x0d)
  52   RELOC_NUMBER (R_RL78_DIR8UL,       0x0e)
  53   RELOC_NUMBER (R_RL78_DIR8UW,       0x0f)
  54   RELOC_NUMBER (R_RL78_DIR32_REV,    0x10)
  55   RELOC_NUMBER (R_RL78_DIR16_REV,    0x11)
  56   RELOC_NUMBER (R_RL78_DIR3U_PCREL,  0x12)
  57
  58   /* These are extensions added by Red Hat.  */
  59   RELOC_NUMBER (R_RL78_RH_RELAX,     0x2d) /* Marks opcodes suitable for linker relaxation.  */
  60   RELOC_NUMBER (R_RL78_RH_SFR,       0x2e) /* SFR addresses - internal use only.  */
  61   RELOC_NUMBER (R_RL78_RH_SADDR,     0x2f) /* SADDR addresses - internal use only..  */
  62
  63   /* These are for complex relocs.  */
  64   RELOC_NUMBER (R_RL78_ABS32,        0x41)
  65   RELOC_NUMBER (R_RL78_ABS24S,       0x42)
  66   RELOC_NUMBER (R_RL78_ABS16,        0x43)
  67   RELOC_NUMBER (R_RL78_ABS16U,       0x44)
  68   RELOC_NUMBER (R_RL78_ABS16S,       0x45)
  69   RELOC_NUMBER (R_RL78_ABS8,         0x46)
  70   RELOC_NUMBER (R_RL78_ABS8U,        0x47)
  71   RELOC_NUMBER (R_RL78_ABS8S,        0x48)
  72   RELOC_NUMBER (R_RL78_ABS24S_PCREL, 0x49)
  73   RELOC_NUMBER (R_RL78_ABS16S_PCREL, 0x4a)
  74   RELOC_NUMBER (R_RL78_ABS8S_PCREL,  0x4b)
  75   RELOC_NUMBER (R_RL78_ABS16UL,      0x4c)
  76   RELOC_NUMBER (R_RL78_ABS16UW,      0x4d)
  77   RELOC_NUMBER (R_RL78_ABS8UL,       0x4e)
  78   RELOC_NUMBER (R_RL78_ABS8UW,       0x4f)
  79   RELOC_NUMBER (R_RL78_ABS32_REV,    0x50)
  80   RELOC_NUMBER (R_RL78_ABS16_REV,    0x51)
  81
  82   RELOC_NUMBER (R_RL78_SYM,          0x80)
  83   RELOC_NUMBER (R_RL78_OPneg,        0x81)
  84   RELOC_NUMBER (R_RL78_OPadd,        0x82)
  85   RELOC_NUMBER (R_RL78_OPsub,        0x83)
  86   RELOC_NUMBER (R_RL78_OPmul,        0x84)
  87   RELOC_NUMBER (R_RL78_OPdiv,        0x85)
  88   RELOC_NUMBER (R_RL78_OPshla,       0x86)
  89   RELOC_NUMBER (R_RL78_OPshra,       0x87)
  90   RELOC_NUMBER (R_RL78_OPsctsize,    0x88)
  91   RELOC_NUMBER (R_RL78_OPscttop,     0x8d)
  92   RELOC_NUMBER (R_RL78_OPand,        0x90)
  93   RELOC_NUMBER (R_RL78_OPor,         0x91)
  94   RELOC_NUMBER (R_RL78_OPxor,        0x92)
  95   RELOC_NUMBER (R_RL78_OPnot,        0x93)
  96   RELOC_NUMBER (R_RL78_OPmod,        0x94)
  97   RELOC_NUMBER (R_RL78_OPromtop,     0x95)
  98   RELOC_NUMBER (R_RL78_OPramtop,     0x96)
  99
 100 END_RELOC_NUMBERS (R_RL78_max)
 101
 102 #define EF_RL78_CPU_RL78        0x00000079      /* FIXME: correct value?  */
 103 #define EF_RL78_CPU_MASK        0x0000007F      /* specific cpu bits.  */
 104 #define EF_RL78_ALL_FLAGS       (EF_RL78_CPU_MASK)
 105
 106 /* Values for the e_flags field in the ELF header.  */
 107 #define E_FLAG_RL78_64BIT_DOUBLES       (1 << 0)
 108 #define E_FLAG_RL78_DSP                 (1 << 1) /* Defined in the RL78 CPU Object file specification, but not explained.  */
 109 #define E_FLAG_RL78_CPU_MASK            0x0c
 110 #define E_FLAG_RL78_ANY_CPU             0x00     /* CPU not specified.  Assume no CPU specific code usage.  */
 111 #define E_FLAG_RL78_G10                 0x04     /* CPU is missing register banks 1-3, so uses different ABI.  */
 112 #define E_FLAG_RL78_G13                 0x08     /* CPU uses a peripheral for multiply/divide.  */
 113 #define E_FLAG_RL78_G14                 0x0c     /* CPU has multiply/divide instructions.  */
 114
 115 /* These define the addend field of R_RL78_RH_RELAX relocations.  */
 116 #define RL78_RELAXA_MASK        0x000000f0      /* Mask for relax types */
 117 #define RL78_RELAXA_BRA         0x00000010      /* Any type of branch (must be decoded).  */
 118 #define RL78_RELAXA_ADDR16      0x00000020      /* addr16->sfr/saddr opportunity  */
 119 #define RL78_RELAXA_RNUM        0x0000000f      /* Number of associated relocations.  */
 120 /* These mark the place where alignment is requested, and the place where the filler bytes end.  */
 121 #define RL78_RELAXA_ALIGN       0x10000000      /* Start alignment; the remaining bits are the alignment value.  */
 122 #define RL78_RELAXA_ELIGN       0x20000000      /* End alignment; the remaining bits are the alignment value.  */
 123 #define RL78_RELAXA_ANUM        0x00ffffff      /* Alignment amount, in bytes (i.e. .balign).  */
 124
 125 #endif /* _ELF_RL78_H */