1 /* Altera Nios II ELF support for BFD.
2    Copyright (C) 2012-2016 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 */
121