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  1. /* TI C6X ELF support for BFD.
  2.    Copyright (C) 2010-2015 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
  18.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19.    MA 02110-1301, USA.  */
  20.  
  21. #ifndef _ELF_TIC6X_H
  22. #define _ELF_TIC6X_H
  23.  
  24. #include "elf/reloc-macros.h"
  25.  
  26. /* Relocation types.  */
  27. START_RELOC_NUMBERS (elf_tic6x_reloc_type)
  28.   RELOC_NUMBER (R_C6000_NONE, 0)
  29.   RELOC_NUMBER (R_C6000_ABS32, 1)
  30.   RELOC_NUMBER (R_C6000_ABS16, 2)
  31.   RELOC_NUMBER (R_C6000_ABS8, 3)
  32.   RELOC_NUMBER (R_C6000_PCR_S21, 4)
  33.   RELOC_NUMBER (R_C6000_PCR_S12, 5)
  34.   RELOC_NUMBER (R_C6000_PCR_S10, 6)
  35.   RELOC_NUMBER (R_C6000_PCR_S7, 7)
  36.   RELOC_NUMBER (R_C6000_ABS_S16, 8)
  37.   RELOC_NUMBER (R_C6000_ABS_L16, 9)
  38.   RELOC_NUMBER (R_C6000_ABS_H16, 10)
  39.   RELOC_NUMBER (R_C6000_SBR_U15_B, 11)
  40.   RELOC_NUMBER (R_C6000_SBR_U15_H, 12)
  41.   RELOC_NUMBER (R_C6000_SBR_U15_W, 13)
  42.   RELOC_NUMBER (R_C6000_SBR_S16, 14)
  43.   RELOC_NUMBER (R_C6000_SBR_L16_B, 15)
  44.   RELOC_NUMBER (R_C6000_SBR_L16_H, 16)
  45.   RELOC_NUMBER (R_C6000_SBR_L16_W, 17)
  46.   RELOC_NUMBER (R_C6000_SBR_H16_B, 18)
  47.   RELOC_NUMBER (R_C6000_SBR_H16_H, 19)
  48.   RELOC_NUMBER (R_C6000_SBR_H16_W, 20)
  49.   RELOC_NUMBER (R_C6000_SBR_GOT_U15_W, 21)
  50.   RELOC_NUMBER (R_C6000_SBR_GOT_L16_W, 22)
  51.   RELOC_NUMBER (R_C6000_SBR_GOT_H16_W, 23)
  52.   RELOC_NUMBER (R_C6000_DSBT_INDEX, 24)
  53.   RELOC_NUMBER (R_C6000_PREL31, 25)
  54.   RELOC_NUMBER (R_C6000_COPY, 26)
  55.   RELOC_NUMBER (R_C6000_JUMP_SLOT, 27)
  56.   RELOC_NUMBER (R_C6000_EHTYPE, 28)
  57.   RELOC_NUMBER (R_C6000_PCR_H16, 29)
  58.   RELOC_NUMBER (R_C6000_PCR_L16, 30)
  59.   RELOC_NUMBER (R_C6000_ALIGN, 253)
  60.   RELOC_NUMBER (R_C6000_FPHEAD, 254)
  61.   RELOC_NUMBER (R_C6000_NOCMP, 255)
  62. END_RELOC_NUMBERS (R_TIC6X_max)
  63.  
  64. /* Processor-specific flags.  */
  65.  
  66. /* File contains static relocation information.  */
  67. #define EF_C6000_REL            0x1
  68.  
  69. /* Processor-specific section types.  */
  70.  
  71. /* Unwind function table for stack unwinding.  */
  72. #define SHT_C6000_UNWIND        0x70000001
  73.  
  74. /* DLL dynamic linking pre-emption map.  */
  75. #define SHT_C6000_PREEMPTMAP    0x70000002
  76.  
  77. /* Object file compatibility attributes.  */
  78. #define SHT_C6000_ATTRIBUTES    0x70000003
  79.  
  80. /* Intermediate code for link-time optimization.  */
  81. #define SHT_TI_ICODE            0x7F000000
  82.  
  83. /* Symbolic cross reference information.  */
  84. #define SHT_TI_XREF             0x7F000001
  85.  
  86. /* Reserved.  */
  87. #define SHT_TI_HANDLER          0x7F000002
  88.  
  89. /* Compressed data for initializing C variables.  */
  90. #define SHT_TI_INITINFO         0x7F000003
  91.  
  92. /* Extended program header attributes.  */
  93. #define SHT_TI_PHATTRS          0x7F000004
  94.  
  95. /* Processor specific section indices.  These sections do not actually
  96.    exist.  Symbols with a st_shndx field corresponding to one of these
  97.    values have a special meaning.  */
  98.  
  99. /* Small data area common symbol.  */
  100. #define SHN_TIC6X_SCOMMON       SHN_LORESERVE
  101.  
  102. /* Processor-specific segment types.  */
  103.  
  104. /* Extended Segment Attributes.  */
  105. #define PT_C6000_PHATTR         0x70000000
  106.  
  107. /* Processor-specific dynamic tags.  */
  108.  
  109. /* Undocumented.  */
  110. #define DT_C6000_GSYM_OFFSET    0x6000000D
  111.  
  112. /* Undocumented.  */
  113. #define DT_C6000_GSTR_OFFSET    0x6000000F
  114.  
  115. /* Statically linked base address of data segment.  */
  116. #define DT_C6000_DSBT_BASE      0x70000000
  117.  
  118. /* Number of entries in this module's DSBT.  */
  119. #define DT_C6000_DSBT_SIZE      0x70000001
  120.  
  121. /* Undocumented.  */
  122. #define DT_C6000_PREEMPTMAP     0x70000002
  123.  
  124. /* The hard-coded DSBT index for this module, if any.  */
  125. #define DT_C6000_DSBT_INDEX     0x70000003
  126.  
  127. /* Extended program header attributes.  */
  128.  
  129. /* Terminate a segment.  */
  130. #define PHA_NULL                0x0
  131.  
  132. /* Segment's address bound to the final address.  */
  133. #define PHA_BOUND               0x1
  134.  
  135. /* Segment cannot be further relocated.  */
  136. #define PHA_READONLY            0x2
  137.  
  138. /* Build attributes.  */
  139. enum
  140.   {
  141. #define TAG(tag, value) tag = value,
  142. #include "elf/tic6x-attrs.h"
  143. #undef TAG
  144.     Tag_C6XABI_last
  145.   };
  146.  
  147. /* Values for Tag_ISA.  GNU-specific names; the ABI does not specify
  148.    names for these values.  */
  149. enum
  150.   {
  151.     C6XABI_Tag_ISA_none = 0,
  152.     C6XABI_Tag_ISA_C62X = 1,
  153.     C6XABI_Tag_ISA_C67X = 3,
  154.     C6XABI_Tag_ISA_C67XP = 4,
  155.     C6XABI_Tag_ISA_C64X = 6,
  156.     C6XABI_Tag_ISA_C64XP = 7,
  157.     C6XABI_Tag_ISA_C674X = 8
  158.   };
  159.  
  160. /* Special section names.  */
  161. #define ELF_STRING_C6000_unwind           ".c6xabi.exidx"
  162. #define ELF_STRING_C6000_unwind_info      ".c6xabi.extab"
  163. #define ELF_STRING_C6000_unwind_once      ".gnu.linkonce.c6xabi.exidx."
  164. #define ELF_STRING_C6000_unwind_info_once ".gnu.linkonce.c6xabi.extab."
  165.  
  166. #endif /* _ELF_TIC6X_H */
  167.