include/elf/nios2.h

   1 /* Altera Nios II ELF support for BFD.
   2    Copyright (C) 2012-2022 Free Software Foundation, Inc.
   3    Contributed by Nigel Gray (ngray@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 */