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  1. /* RX ELF support for BFD.
  2.    Copyright (C) 2008-2015 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.  
  123. #define E_FLAG_RX_SINSNS_SET            (1 << 6) /* Set if bit-5 is significant.  */
  124. #define E_FLAG_RX_SINSNS_YES            (1 << 7) /* Set if string instructions are used in the binary.  */
  125. #define E_FLAG_RX_SINSNS_NO             0        /* Bit-5 if this binary must not be linked with a string instruction using binary.  */
  126. #define E_FLAG_RX_SINSNS_MASK           (3 << 6) /* Mask of bits used to determine string instruction use.  */
  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 */
  142.