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252b5132 | 1 | /* ARM ELF support for BFD. |
4f1d9bd8 | 2 | Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
252b5132 RH |
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 2 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 Foundation, | |
18 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #ifndef _ELF_ARM_H | |
21 | #define _ELF_ARM_H | |
22 | ||
23 | #include "elf/reloc-macros.h" | |
24 | ||
25 | /* Processor specific flags for the ELF header e_flags field. */ | |
26 | #define EF_ARM_RELEXEC 0x01 | |
27 | #define EF_ARM_HASENTRY 0x02 | |
2a7a4624 PB |
28 | #define EF_ARM_INTERWORK 0x04 |
29 | #define EF_ARM_APCS_26 0x08 | |
30 | #define EF_ARM_APCS_FLOAT 0x10 | |
31 | #define EF_ARM_PIC 0x20 | |
32 | #define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */ | |
33 | #define EF_ARM_NEW_ABI 0x80 | |
34 | #define EF_ARM_OLD_ABI 0x100 | |
35 | #define EF_ARM_SOFT_FLOAT 0x200 | |
36 | ||
37 | /* Other constants defined in the ARM ELF spec. version B-01. */ | |
ff1c4e0d | 38 | #define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */ |
2a7a4624 PB |
39 | #define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */ |
40 | #define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */ | |
ff1c4e0d NC |
41 | #define EF_ARM_EABIMASK 0xFF000000 |
42 | ||
43 | #define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK) | |
44 | #define EF_ARM_EABI_UNKNOWN 0x00000000 | |
45 | #define EF_ARM_EABI_VER1 0x01000000 | |
2a7a4624 | 46 | #define EF_ARM_EABI_VER2 0x02000000 |
ff1c4e0d | 47 | |
252b5132 | 48 | /* Local aliases for some flags to match names used by COFF port. */ |
2a7a4624 PB |
49 | #define F_INTERWORK EF_ARM_INTERWORK |
50 | #define F_APCS26 EF_ARM_APCS_26 | |
51 | #define F_APCS_FLOAT EF_ARM_APCS_FLOAT | |
52 | #define F_PIC EF_ARM_PIC | |
53 | #define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT | |
252b5132 | 54 | |
2f0ca46a NC |
55 | /* Additional symbol types for Thumb. */ |
56 | #define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */ | |
57 | #define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */ | |
252b5132 | 58 | |
2f0ca46a NC |
59 | /* ARM-specific values for sh_flags. */ |
60 | #define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */ | |
61 | #define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */ | |
252b5132 | 62 | |
2f0ca46a NC |
63 | /* ARM-specific program header flags. */ |
64 | #define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */ | |
ff1c4e0d NC |
65 | #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */ |
66 | #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */ | |
252b5132 RH |
67 | |
68 | /* Relocation types. */ | |
8725b940 | 69 | |
252b5132 | 70 | START_RELOC_NUMBERS (elf_arm_reloc_type) |
8725b940 NC |
71 | RELOC_NUMBER (R_ARM_NONE, 0) |
72 | RELOC_NUMBER (R_ARM_PC24, 1) | |
73 | RELOC_NUMBER (R_ARM_ABS32, 2) | |
74 | RELOC_NUMBER (R_ARM_REL32, 3) | |
75 | #ifdef OLD_ARM_ABI | |
76 | RELOC_NUMBER (R_ARM_ABS8, 4) | |
77 | RELOC_NUMBER (R_ARM_ABS16, 5) | |
78 | RELOC_NUMBER (R_ARM_ABS12, 6) | |
79 | RELOC_NUMBER (R_ARM_THM_ABS5, 7) | |
80 | RELOC_NUMBER (R_ARM_THM_PC22, 8) | |
81 | RELOC_NUMBER (R_ARM_SBREL32, 9) | |
82 | RELOC_NUMBER (R_ARM_AMP_VCALL9, 10) | |
83 | RELOC_NUMBER (R_ARM_THM_PC11, 11) /* Cygnus extension to abi: Thumb unconditional branch. */ | |
84 | RELOC_NUMBER (R_ARM_THM_PC9, 12) /* Cygnus extension to abi: Thumb conditional branch. */ | |
85 | RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 13) | |
86 | RELOC_NUMBER (R_ARM_GNU_VTENTRY, 14) | |
87 | #else /* not OLD_ARM_ABI */ | |
88 | RELOC_NUMBER (R_ARM_PC13, 4) | |
89 | RELOC_NUMBER (R_ARM_ABS16, 5) | |
90 | RELOC_NUMBER (R_ARM_ABS12, 6) | |
91 | RELOC_NUMBER (R_ARM_THM_ABS5, 7) | |
92 | RELOC_NUMBER (R_ARM_ABS8, 8) | |
93 | RELOC_NUMBER (R_ARM_SBREL32, 9) | |
94 | RELOC_NUMBER (R_ARM_THM_PC22, 10) | |
95 | RELOC_NUMBER (R_ARM_THM_PC8, 11) | |
96 | RELOC_NUMBER (R_ARM_AMP_VCALL9, 12) | |
97 | RELOC_NUMBER (R_ARM_SWI24, 13) | |
98 | RELOC_NUMBER (R_ARM_THM_SWI8, 14) | |
99 | RELOC_NUMBER (R_ARM_XPC25, 15) | |
100 | RELOC_NUMBER (R_ARM_THM_XPC22, 16) | |
101 | #endif /* not OLD_ARM_ABI */ | |
102 | RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */ | |
103 | RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */ | |
104 | RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */ | |
105 | RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */ | |
106 | RELOC_NUMBER (R_ARM_GOTOFF, 24) /* 32 bit offset to GOT. */ | |
107 | RELOC_NUMBER (R_ARM_GOTPC, 25) /* 32 bit PC relative offset to GOT. */ | |
108 | RELOC_NUMBER (R_ARM_GOT32, 26) /* 32 bit GOT entry. */ | |
109 | RELOC_NUMBER (R_ARM_PLT32, 27) /* 32 bit PLT address. */ | |
110 | #ifdef OLD_ARM_ABI | |
111 | FAKE_RELOC (FIRST_INVALID_RELOC, 28) | |
112 | FAKE_RELOC (LAST_INVALID_RELOC, 249) | |
113 | #else /* not OLD_ARM_ABI */ | |
114 | FAKE_RELOC (FIRST_INVALID_RELOC1, 28) | |
2a7a4624 PB |
115 | FAKE_RELOC (LAST_INVALID_RELOC1, 31) |
116 | RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32) | |
117 | RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33) | |
118 | RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34) | |
119 | RELOC_NUMBER (R_ARM_LDR_SBREL11_0, 35) | |
120 | RELOC_NUMBER (R_ARM_ALU_SBREL19_12, 36) | |
121 | RELOC_NUMBER (R_ARM_ALU_SBREL27_20, 37) | |
122 | FAKE_RELOC (FIRST_INVALID_RELOC2, 38) | |
123 | FAKE_RELOC (LAST_INVALID_RELOC2, 99) | |
8725b940 NC |
124 | RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100) |
125 | RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101) | |
126 | RELOC_NUMBER (R_ARM_THM_PC11, 102) /* Cygnus extension to abi: Thumb unconditional branch. */ | |
127 | RELOC_NUMBER (R_ARM_THM_PC9, 103) /* Cygnus extension to abi: Thumb conditional branch. */ | |
2a7a4624 PB |
128 | FAKE_RELOC (FIRST_INVALID_RELOC3, 104) |
129 | FAKE_RELOC (LAST_INVALID_RELOC3, 248) | |
8725b940 NC |
130 | RELOC_NUMBER (R_ARM_RXPC25, 249) |
131 | #endif /* not OLD_ARM_ABI */ | |
132 | RELOC_NUMBER (R_ARM_RSBREL32, 250) | |
133 | RELOC_NUMBER (R_ARM_THM_RPC22, 251) | |
134 | RELOC_NUMBER (R_ARM_RREL32, 252) | |
135 | RELOC_NUMBER (R_ARM_RABS32, 253) | |
136 | RELOC_NUMBER (R_ARM_RPC24, 254) | |
137 | RELOC_NUMBER (R_ARM_RBASE, 255) | |
1b452ec6 | 138 | END_RELOC_NUMBERS (R_ARM_max) |
252b5132 | 139 | |
8725b940 | 140 | #endif /* _ELF_ARM_H */ |