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      1 /* Altera Nios II ELF support for BFD.
      2    Copyright (C) 2012-2016 Free Software Foundation, Inc.
      3    Contributed by Nigel Gray (ngray (at) altera.com).
      4    Contributed by Mentor Graphics, Inc.
      5 
      6    This file is part of BFD, the Binary File Descriptor library.
      7 
      8    This program is free software; you can redistribute it and/or modify
      9    it under the terms of the GNU General Public License as published by
     10    the Free Software Foundation; either version 3 of the License, or
     11    (at your option) any later version.
     12 
     13    This program is distributed in the hope that it will be useful,
     14    but WITHOUT ANY WARRANTY; without even the implied warranty of
     15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16    GNU General Public License for more details.
     17 
     18    You should have received a copy of the GNU General Public License
     19    along with this program; if not, write to the Free Software
     20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     21    MA 02110-1301, USA.  */
     22 
     23 
     24 /* This file holds definitions specific to the Altera Nios II ELF ABI.  Note
     25    that most of this is not actually implemented by BFD.  */
     26 
     27 #ifndef _ELF_NIOS2_H
     28 #define _ELF_NIOS2_H
     29 
     30 #include "elf/reloc-macros.h"
     31 
     32 /* The order of these numbers must match the order in
     33    the elf_nios2_howto_table_rel table for the lookup
     34    function to work properly.  */
     35 
     36 START_RELOC_NUMBERS (elf_nios2_reloc_type)
     37   /* Relocs used by both R1 and R2, with different howtos to match
     38      the respective encodings.  */
     39   RELOC_NUMBER (R_NIOS2_NONE,	  0)
     40   RELOC_NUMBER (R_NIOS2_S16,	  1)
     41   RELOC_NUMBER (R_NIOS2_U16,	  2)
     42   RELOC_NUMBER (R_NIOS2_PCREL16, 3)
     43   RELOC_NUMBER (R_NIOS2_CALL26,  4)
     44   RELOC_NUMBER (R_NIOS2_IMM5,	  5)
     45   RELOC_NUMBER (R_NIOS2_CACHE_OPX, 6)
     46   RELOC_NUMBER (R_NIOS2_IMM6,	  7)
     47   RELOC_NUMBER (R_NIOS2_IMM8,	  8)
     48   RELOC_NUMBER (R_NIOS2_HI16,	  9)
     49   RELOC_NUMBER (R_NIOS2_LO16,	  10)
     50   RELOC_NUMBER (R_NIOS2_HIADJ16, 11)
     51   RELOC_NUMBER (R_NIOS2_BFD_RELOC_32, 12)
     52   RELOC_NUMBER (R_NIOS2_BFD_RELOC_16, 13)
     53   RELOC_NUMBER (R_NIOS2_BFD_RELOC_8, 14)
     54   RELOC_NUMBER (R_NIOS2_GPREL, 15)
     55   RELOC_NUMBER (R_NIOS2_GNU_VTINHERIT, 16)
     56   RELOC_NUMBER (R_NIOS2_GNU_VTENTRY, 17)
     57   RELOC_NUMBER (R_NIOS2_UJMP, 18)
     58   RELOC_NUMBER (R_NIOS2_CJMP, 19)
     59   RELOC_NUMBER (R_NIOS2_CALLR, 20)
     60   RELOC_NUMBER (R_NIOS2_ALIGN, 21)
     61   RELOC_NUMBER (R_NIOS2_GOT16, 22)
     62   RELOC_NUMBER (R_NIOS2_CALL16, 23)
     63   RELOC_NUMBER (R_NIOS2_GOTOFF_LO, 24)
     64   RELOC_NUMBER (R_NIOS2_GOTOFF_HA, 25)
     65   RELOC_NUMBER (R_NIOS2_PCREL_LO, 26)
     66   RELOC_NUMBER (R_NIOS2_PCREL_HA, 27)
     67   RELOC_NUMBER (R_NIOS2_TLS_GD16, 28)
     68   RELOC_NUMBER (R_NIOS2_TLS_LDM16, 29)
     69   RELOC_NUMBER (R_NIOS2_TLS_LDO16, 30)
     70   RELOC_NUMBER (R_NIOS2_TLS_IE16, 31)
     71   RELOC_NUMBER (R_NIOS2_TLS_LE16, 32)
     72   RELOC_NUMBER (R_NIOS2_TLS_DTPMOD, 33)
     73   RELOC_NUMBER (R_NIOS2_TLS_DTPREL, 34)
     74   RELOC_NUMBER (R_NIOS2_TLS_TPREL, 35)
     75   RELOC_NUMBER (R_NIOS2_COPY, 36)
     76   RELOC_NUMBER (R_NIOS2_GLOB_DAT, 37)
     77   RELOC_NUMBER (R_NIOS2_JUMP_SLOT, 38)
     78   RELOC_NUMBER (R_NIOS2_RELATIVE, 39)
     79   RELOC_NUMBER (R_NIOS2_GOTOFF, 40)
     80   RELOC_NUMBER (R_NIOS2_CALL26_NOAT,  41)
     81   RELOC_NUMBER (R_NIOS2_GOT_LO, 42)
     82   RELOC_NUMBER (R_NIOS2_GOT_HA, 43)
     83   RELOC_NUMBER (R_NIOS2_CALL_LO, 44)
     84   RELOC_NUMBER (R_NIOS2_CALL_HA, 45)
     85 
     86   /* Relocs specific to R2.  */
     87   RELOC_NUMBER (R_NIOS2_R2_S12, 64)
     88   RELOC_NUMBER (R_NIOS2_R2_I10_1_PCREL, 65)
     89   RELOC_NUMBER (R_NIOS2_R2_T1I7_1_PCREL, 66)
     90   RELOC_NUMBER (R_NIOS2_R2_T1I7_2, 67)
     91   RELOC_NUMBER (R_NIOS2_R2_T2I4, 68)
     92   RELOC_NUMBER (R_NIOS2_R2_T2I4_1, 69)
     93   RELOC_NUMBER (R_NIOS2_R2_T2I4_2, 70)
     94   RELOC_NUMBER (R_NIOS2_R2_X1I7_2, 71)
     95   RELOC_NUMBER (R_NIOS2_R2_X2L5, 72)
     96   RELOC_NUMBER (R_NIOS2_R2_F1I5_2, 73)
     97   RELOC_NUMBER (R_NIOS2_R2_L5I4X1, 74)
     98   RELOC_NUMBER (R_NIOS2_R2_T1X1I6, 75)
     99   RELOC_NUMBER (R_NIOS2_R2_T1X1I6_2, 76)
    100 
    101   /* Last reloc.  */
    102   RELOC_NUMBER (R_NIOS2_ILLEGAL, 77)
    103 END_RELOC_NUMBERS (R_NIOS2_maxext)
    104 
    105 /* Processor-specific section flags.  */
    106 
    107 /* This is used to mark gp-relative sections.  */
    108 #define SHF_NIOS2_GPREL	0x10000000
    109 
    110 /* Processor-specific dynamic array tags.  */
    111 
    112 /* Address of _gp.  */
    113 #define DT_NIOS2_GP 0x70000002
    114 
    115 /* Processor specific flags for the Elf header e_flags field.  */
    116 
    117 #define EF_NIOS2_ARCH_R1 0x00000000
    118 #define EF_NIOS2_ARCH_R2 0x00000001
    119 
    120 #endif /* _ELF_NIOS2_H */
    121