include/elf/rx.h

   1 /* RX ELF support for BFD.
   2    Copyright (C) 2008-2017 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_RX_H
  21 #define _ELF_RX_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-rx.c to see if any of the internal relocations need to
  28    be, er, relocated.  */
  29
  30 /* Preliminary relocations.  */
  31 START_RELOC_NUMBERS (elf_rx_reloc_type)
  32
  33   RELOC_NUMBER (R_RX_NONE,         0x00)
  34   /* These are for data, and are bi-endian.  */
  35   RELOC_NUMBER (R_RX_DIR32,        0x01) /* Was: R_RX_32.  */
  36   RELOC_NUMBER (R_RX_DIR24S,       0x02) /* Was: R_RX_24.  */
  37   RELOC_NUMBER (R_RX_DIR16,        0x03)
  38   RELOC_NUMBER (R_RX_DIR16U,       0x04) /* Was: R_RX_16_UNS.  */
  39   RELOC_NUMBER (R_RX_DIR16S,       0x05) /* Was: R_RX_16.  */
  40   RELOC_NUMBER (R_RX_DIR8,         0x06)
  41   RELOC_NUMBER (R_RX_DIR8U,        0x07) /* Was: R_RX_8_UNS.  */
  42   RELOC_NUMBER (R_RX_DIR8S,        0x08) /* Was: R_RX_8.  */
  43
  44   /* Signed pc-relative values.  */
  45   RELOC_NUMBER (R_RX_DIR24S_PCREL, 0x09) /* Was: R_RX_24_PCREL.  */
  46   RELOC_NUMBER (R_RX_DIR16S_PCREL, 0x0a) /* Was: R_RX_16_PCREL.  */
  47   RELOC_NUMBER (R_RX_DIR8S_PCREL,  0x0b) /* Was: R_RX_8_PCREL.  */
  48
  49   /* These are for fields in the instructions.  */
  50   RELOC_NUMBER (R_RX_DIR16UL,      0x0c)
  51   RELOC_NUMBER (R_RX_DIR16UW,      0x0d)
  52   RELOC_NUMBER (R_RX_DIR8UL,       0x0e)
  53   RELOC_NUMBER (R_RX_DIR8UW,       0x0f)
  54   RELOC_NUMBER (R_RX_DIR32_REV,    0x10)
  55   RELOC_NUMBER (R_RX_DIR16_REV,    0x11)
  56   RELOC_NUMBER (R_RX_DIR3U_PCREL,  0x12)
  57
  58   /* These are extensions added by Red Hat.  */
  59   RELOC_NUMBER (R_RX_RH_3_PCREL,   0x20) /* Like R_RX_DIR8S_PCREL but only 3-bits.  */
  60   RELOC_NUMBER (R_RX_RH_16_OP,     0x21) /* Like R_RX_DIR16 but for opcodes - always big endian.  */
  61   RELOC_NUMBER (R_RX_RH_24_OP,     0x22) /* Like R_RX_DIR24S but for opcodes - always big endian.  */
  62   RELOC_NUMBER (R_RX_RH_32_OP,     0x23) /* Like R_RX_DIR32 but for opcodes - always big endian.  */
  63   RELOC_NUMBER (R_RX_RH_24_UNS,    0x24) /* Like R_RX_DIR24S but for unsigned values.  */
  64   RELOC_NUMBER (R_RX_RH_8_NEG,     0x25) /* Like R_RX_DIR8 but -x is stored.  */
  65   RELOC_NUMBER (R_RX_RH_16_NEG,    0x26) /* Like R_RX_DIR16 but -x is stored.  */
  66   RELOC_NUMBER (R_RX_RH_24_NEG,    0x27) /* Like R_RX_DIR24S but -x is stored.  */
  67   RELOC_NUMBER (R_RX_RH_32_NEG,    0x28) /* Like R_RX_DIR32 but -x is stored.  */
  68   RELOC_NUMBER (R_RX_RH_DIFF,      0x29) /* Subtract from a previous relocation.  */
  69   RELOC_NUMBER (R_RX_RH_GPRELB,    0x2a) /* Byte value, relative to __gp.  */
  70   RELOC_NUMBER (R_RX_RH_GPRELW,    0x2b) /* Word value, relative to __gp.  */
  71   RELOC_NUMBER (R_RX_RH_GPRELL,    0x2c) /* Long value, relative to __gp.  */
  72   RELOC_NUMBER (R_RX_RH_RELAX,     0x2d) /* Marks opcodes suitable for linker relaxation.  */
  73
  74   /* These are for complex relocs.  */
  75   RELOC_NUMBER (R_RX_ABS32,        0x41)
  76   RELOC_NUMBER (R_RX_ABS24S,       0x42)
  77   RELOC_NUMBER (R_RX_ABS16,        0x43)
  78   RELOC_NUMBER (R_RX_ABS16U,       0x44)
  79   RELOC_NUMBER (R_RX_ABS16S,       0x45)
  80   RELOC_NUMBER (R_RX_ABS8,         0x46)
  81   RELOC_NUMBER (R_RX_ABS8U,        0x47)
  82   RELOC_NUMBER (R_RX_ABS8S,        0x48)
  83   RELOC_NUMBER (R_RX_ABS24S_PCREL, 0x49)
  84   RELOC_NUMBER (R_RX_ABS16S_PCREL, 0x4a)
  85   RELOC_NUMBER (R_RX_ABS8S_PCREL,  0x4b)
  86   RELOC_NUMBER (R_RX_ABS16UL,      0x4c)
  87   RELOC_NUMBER (R_RX_ABS16UW,      0x4d)
  88   RELOC_NUMBER (R_RX_ABS8UL,       0x4e)
  89   RELOC_NUMBER (R_RX_ABS8UW,       0x4f)
  90   RELOC_NUMBER (R_RX_ABS32_REV,    0x50)
  91   RELOC_NUMBER (R_RX_ABS16_REV,    0x51)
  92
  93   RELOC_NUMBER (R_RX_SYM,          0x80)
  94   RELOC_NUMBER (R_RX_OPneg,        0x81)
  95   RELOC_NUMBER (R_RX_OPadd,        0x82)
  96   RELOC_NUMBER (R_RX_OPsub,        0x83)
  97   RELOC_NUMBER (R_RX_OPmul,        0x84)
  98   RELOC_NUMBER (R_RX_OPdiv,        0x85)
  99   RELOC_NUMBER (R_RX_OPshla,       0x86)
 100   RELOC_NUMBER (R_RX_OPshra,       0x87)
 101   RELOC_NUMBER (R_RX_OPsctsize,    0x88)
 102   RELOC_NUMBER (R_RX_OPscttop,     0x8d)
 103   RELOC_NUMBER (R_RX_OPand,        0x90)
 104   RELOC_NUMBER (R_RX_OPor,         0x91)
 105   RELOC_NUMBER (R_RX_OPxor,        0x92)
 106   RELOC_NUMBER (R_RX_OPnot,        0x93)
 107   RELOC_NUMBER (R_RX_OPmod,        0x94)
 108   RELOC_NUMBER (R_RX_OPromtop,     0x95)
 109   RELOC_NUMBER (R_RX_OPramtop,     0x96)
 110
 111 END_RELOC_NUMBERS (R_RX_max)
 112
 113 #define EF_RX_CPU_RX    0x00000079      /* FIXME: this collides with the E_FLAG_RX_... values below.  */
 114 #define EF_RX_CPU_MASK  0x0000007F      /* specific cpu bits.  */
 115 #define EF_RX_ALL_FLAGS (EF_RX_CPU_MASK)
 116
 117 /* Values for the e_flags field in the ELF header.  */
 118 #define E_FLAG_RX_64BIT_DOUBLES         (1 << 0)
 119 #define E_FLAG_RX_DSP                   (1 << 1) /* Defined in the RX CPU Object file specification, but not explained. */
 120 #define E_FLAG_RX_PID                   (1 << 2) /* Unofficial - DJ */
 121 #define E_FLAG_RX_ABI                   (1 << 3) /* Binary passes stacked arguments using natural alignment.  Unofficial - NC.  */
 122 #define E_FLAG_RX_SINSNS_SET            (1 << 6) /* Set if bit-5 is significant.  */
 123 #define E_FLAG_RX_SINSNS_YES            (1 << 7) /* Set if string instructions are used in the binary.  */
 124 #define E_FLAG_RX_SINSNS_NO             0        /* Bit-5 if this binary must not be linked with a string instruction using binary.  */
 125 #define E_FLAG_RX_SINSNS_MASK           (3 << 6) /* Mask of bits used to determine string instruction use.  */
 126 #define E_FLAG_RX_V2                    (1 << 8) /* RX v2 instructions */
 127
 128 /* These define the addend field of R_RX_RH_RELAX relocations.  */
 129 #define RX_RELAXA_IMM6  0x00000010      /* Imm8/16/24/32 at bit offset 6.  */
 130 #define RX_RELAXA_IMM12 0x00000020      /* Imm8/16/24/32 at bit offset 12.  */
 131 #define RX_RELAXA_DSP4  0x00000040      /* Dsp0/8/16 at bit offset 4.  */
 132 #define RX_RELAXA_DSP6  0x00000080      /* Dsp0/8/16 at bit offset 6.  */
 133 #define RX_RELAXA_DSP14 0x00000100      /* Dsp0/8/16 at bit offset 14.  */
 134 #define RX_RELAXA_BRA   0x00000200      /* Any type of branch (must be decoded).  */
 135 #define RX_RELAXA_RNUM  0x0000000f      /* Number of associated relocations.  */
 136 /* These mark the place where alignment is requested, and the place where the filler bytes end.  */
 137 #define RX_RELAXA_ALIGN 0x10000000      /* Start alignment; the remaining bits are the alignment value.  */
 138 #define RX_RELAXA_ELIGN 0x20000000      /* End alignment; the remaining bits are the alignment value.  */
 139 #define RX_RELAXA_ANUM  0x00ffffff      /* Alignment amount, in bytes (i.e. .balign).  */
 140
 141 #endif /* _ELF_RX_H */