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252b5132 | 1 | /* ARM ELF support for BFD. |
c3aa17e9 AM |
2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software Foundation, | |
19 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifndef _ELF_ARM_H | |
22 | #define _ELF_ARM_H | |
23 | ||
24 | #include "elf/reloc-macros.h" | |
25 | ||
26 | /* Processor specific flags for the ELF header e_flags field. */ | |
27 | #define EF_ARM_RELEXEC 0x01 | |
28 | #define EF_ARM_HASENTRY 0x02 | |
2a7a4624 PB |
29 | #define EF_ARM_INTERWORK 0x04 |
30 | #define EF_ARM_APCS_26 0x08 | |
31 | #define EF_ARM_APCS_FLOAT 0x10 | |
32 | #define EF_ARM_PIC 0x20 | |
33 | #define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */ | |
34 | #define EF_ARM_NEW_ABI 0x80 | |
35 | #define EF_ARM_OLD_ABI 0x100 | |
36 | #define EF_ARM_SOFT_FLOAT 0x200 | |
ca4ebd1e | 37 | #define EF_ARM_VFP_FLOAT 0x400 |
fde78edd | 38 | #define EF_ARM_MAVERICK_FLOAT 0x800 |
2a7a4624 PB |
39 | |
40 | /* Other constants defined in the ARM ELF spec. version B-01. */ | |
ff1c4e0d | 41 | #define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */ |
2a7a4624 PB |
42 | #define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */ |
43 | #define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */ | |
ff1c4e0d NC |
44 | #define EF_ARM_EABIMASK 0xFF000000 |
45 | ||
d507cf36 PB |
46 | /* Constants defined in AAELF. */ |
47 | #define EF_ARM_BE8 0x00800000 | |
48 | #define EF_ARM_LE8 0x00400000 | |
49 | ||
ff1c4e0d NC |
50 | #define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK) |
51 | #define EF_ARM_EABI_UNKNOWN 0x00000000 | |
52 | #define EF_ARM_EABI_VER1 0x01000000 | |
2a7a4624 | 53 | #define EF_ARM_EABI_VER2 0x02000000 |
d507cf36 | 54 | #define EF_ARM_EABI_VER3 0x03000000 |
8cb51566 | 55 | #define EF_ARM_EABI_VER4 0x04000000 |
ff1c4e0d | 56 | |
252b5132 | 57 | /* Local aliases for some flags to match names used by COFF port. */ |
2a7a4624 PB |
58 | #define F_INTERWORK EF_ARM_INTERWORK |
59 | #define F_APCS26 EF_ARM_APCS_26 | |
60 | #define F_APCS_FLOAT EF_ARM_APCS_FLOAT | |
61 | #define F_PIC EF_ARM_PIC | |
62 | #define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT | |
ca4ebd1e | 63 | #define F_VFP_FLOAT EF_ARM_VFP_FLOAT |
252b5132 | 64 | |
2f0ca46a NC |
65 | /* Additional symbol types for Thumb. */ |
66 | #define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */ | |
67 | #define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */ | |
252b5132 | 68 | |
40a18ebd NC |
69 | /* Additional section types. */ |
70 | #define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */ | |
71 | ||
2f0ca46a NC |
72 | /* ARM-specific values for sh_flags. */ |
73 | #define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */ | |
74 | #define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */ | |
252b5132 | 75 | |
2f0ca46a NC |
76 | /* ARM-specific program header flags. */ |
77 | #define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */ | |
ff1c4e0d NC |
78 | #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */ |
79 | #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */ | |
252b5132 RH |
80 | |
81 | /* Relocation types. */ | |
8725b940 | 82 | |
252b5132 | 83 | START_RELOC_NUMBERS (elf_arm_reloc_type) |
8725b940 NC |
84 | RELOC_NUMBER (R_ARM_NONE, 0) |
85 | RELOC_NUMBER (R_ARM_PC24, 1) | |
86 | RELOC_NUMBER (R_ARM_ABS32, 2) | |
87 | RELOC_NUMBER (R_ARM_REL32, 3) | |
88 | #ifdef OLD_ARM_ABI | |
89 | RELOC_NUMBER (R_ARM_ABS8, 4) | |
90 | RELOC_NUMBER (R_ARM_ABS16, 5) | |
91 | RELOC_NUMBER (R_ARM_ABS12, 6) | |
92 | RELOC_NUMBER (R_ARM_THM_ABS5, 7) | |
93 | RELOC_NUMBER (R_ARM_THM_PC22, 8) | |
94 | RELOC_NUMBER (R_ARM_SBREL32, 9) | |
95 | RELOC_NUMBER (R_ARM_AMP_VCALL9, 10) | |
96 | RELOC_NUMBER (R_ARM_THM_PC11, 11) /* Cygnus extension to abi: Thumb unconditional branch. */ | |
97 | RELOC_NUMBER (R_ARM_THM_PC9, 12) /* Cygnus extension to abi: Thumb conditional branch. */ | |
98 | RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 13) | |
99 | RELOC_NUMBER (R_ARM_GNU_VTENTRY, 14) | |
100 | #else /* not OLD_ARM_ABI */ | |
101 | RELOC_NUMBER (R_ARM_PC13, 4) | |
102 | RELOC_NUMBER (R_ARM_ABS16, 5) | |
103 | RELOC_NUMBER (R_ARM_ABS12, 6) | |
104 | RELOC_NUMBER (R_ARM_THM_ABS5, 7) | |
105 | RELOC_NUMBER (R_ARM_ABS8, 8) | |
106 | RELOC_NUMBER (R_ARM_SBREL32, 9) | |
107 | RELOC_NUMBER (R_ARM_THM_PC22, 10) | |
108 | RELOC_NUMBER (R_ARM_THM_PC8, 11) | |
109 | RELOC_NUMBER (R_ARM_AMP_VCALL9, 12) | |
110 | RELOC_NUMBER (R_ARM_SWI24, 13) | |
111 | RELOC_NUMBER (R_ARM_THM_SWI8, 14) | |
112 | RELOC_NUMBER (R_ARM_XPC25, 15) | |
113 | RELOC_NUMBER (R_ARM_THM_XPC22, 16) | |
114 | #endif /* not OLD_ARM_ABI */ | |
115 | RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */ | |
116 | RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */ | |
117 | RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */ | |
118 | RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */ | |
119 | RELOC_NUMBER (R_ARM_GOTOFF, 24) /* 32 bit offset to GOT. */ | |
120 | RELOC_NUMBER (R_ARM_GOTPC, 25) /* 32 bit PC relative offset to GOT. */ | |
121 | RELOC_NUMBER (R_ARM_GOT32, 26) /* 32 bit GOT entry. */ | |
122 | RELOC_NUMBER (R_ARM_PLT32, 27) /* 32 bit PLT address. */ | |
123 | #ifdef OLD_ARM_ABI | |
124 | FAKE_RELOC (FIRST_INVALID_RELOC, 28) | |
125 | FAKE_RELOC (LAST_INVALID_RELOC, 249) | |
126 | #else /* not OLD_ARM_ABI */ | |
5b5bb741 PB |
127 | RELOC_NUMBER (R_ARM_CALL, 28) |
128 | RELOC_NUMBER (R_ARM_JUMP24, 29) | |
129 | FAKE_RELOC (FIRST_INVALID_RELOC1, 30) | |
2a7a4624 PB |
130 | FAKE_RELOC (LAST_INVALID_RELOC1, 31) |
131 | RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32) | |
132 | RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33) | |
133 | RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34) | |
db6579d4 PB |
134 | RELOC_NUMBER (R_ARM_LDR_SBREL_11_0, 35) |
135 | RELOC_NUMBER (R_ARM_ALU_SBREL_19_12, 36) | |
136 | RELOC_NUMBER (R_ARM_ALU_SBREL_27_20, 37) | |
9c504268 | 137 | RELOC_NUMBER (R_ARM_TARGET1, 38) |
db6579d4 PB |
138 | RELOC_NUMBER (R_ARM_ROSEGREL32, 39) |
139 | RELOC_NUMBER (R_ARM_V4BX, 40) | |
eb043451 PB |
140 | RELOC_NUMBER (R_ARM_TARGET2, 41) |
141 | RELOC_NUMBER (R_ARM_PREL31, 42) | |
db6579d4 | 142 | FAKE_RELOC (FIRST_INVALID_RELOC2, 43) |
eb043451 PB |
143 | FAKE_RELOC (LAST_INVALID_RELOC2, 94) |
144 | RELOC_NUMBER (R_ARM_GOT_ABS, 95) | |
145 | RELOC_NUMBER (R_ARM_GOT_PREL, 96) | |
146 | RELOC_NUMBER (R_ARM_GOT_BREL12, 97) | |
147 | RELOC_NUMBER (R_ARM_GOTOFF12, 98) | |
148 | RELOC_NUMBER (R_ARM_GOTRELAX, 99) | |
8725b940 NC |
149 | RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100) |
150 | RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101) | |
151 | RELOC_NUMBER (R_ARM_THM_PC11, 102) /* Cygnus extension to abi: Thumb unconditional branch. */ | |
152 | RELOC_NUMBER (R_ARM_THM_PC9, 103) /* Cygnus extension to abi: Thumb conditional branch. */ | |
2a7a4624 PB |
153 | FAKE_RELOC (FIRST_INVALID_RELOC3, 104) |
154 | FAKE_RELOC (LAST_INVALID_RELOC3, 248) | |
8725b940 NC |
155 | RELOC_NUMBER (R_ARM_RXPC25, 249) |
156 | #endif /* not OLD_ARM_ABI */ | |
157 | RELOC_NUMBER (R_ARM_RSBREL32, 250) | |
158 | RELOC_NUMBER (R_ARM_THM_RPC22, 251) | |
159 | RELOC_NUMBER (R_ARM_RREL32, 252) | |
160 | RELOC_NUMBER (R_ARM_RABS32, 253) | |
161 | RELOC_NUMBER (R_ARM_RPC24, 254) | |
162 | RELOC_NUMBER (R_ARM_RBASE, 255) | |
1b452ec6 | 163 | END_RELOC_NUMBERS (R_ARM_max) |
252b5132 | 164 | |
e16bb312 | 165 | /* The name of the note section used to identify arm variants. */ |
5a6c6817 | 166 | #define ARM_NOTE_SECTION ".note.gnu.arm.ident" |
40a18ebd NC |
167 | |
168 | /* Special section names. */ | |
169 | #define ELF_STRING_ARM_unwind ".ARM.exidx" | |
170 | #define ELF_STRING_ARM_unwind_info ".ARM.extab" | |
171 | #define ELF_STRING_ARM_unwind_once ".gnu.linkonce.armexidx." | |
172 | #define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab." | |
173 | ||
8725b940 | 174 | #endif /* _ELF_ARM_H */ |