1 /* ARM ELF support for BFD.
2 Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
23 #include "elf/reloc-macros.h"
25 /* Processor specific flags for the ELF header e_flags field. */
26 #define EF_ARM_RELEXEC 0x01
27 #define EF_ARM_HASENTRY 0x02
28 #define EF_INTERWORK 0x04
29 #define EF_APCS_26 0x08
30 #define EF_APCS_FLOAT 0x10
32 #define EF_ALIGN8 0x40 /* 8-bit structure alignment is in use. */
33 #define EF_NEW_ABI 0x80
34 #define EF_OLD_ABI 0x100
35 #define EF_SOFT_FLOAT 0x200
37 /* Other constants defined in the ARM ELF spec. version A-08. */
38 #define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */
39 #define EF_ARM_EABIMASK 0xFF000000
41 #define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK)
42 #define EF_ARM_EABI_UNKNOWN 0x00000000
43 #define EF_ARM_EABI_VER1 0x01000000
45 /* Local aliases for some flags to match names used by COFF port. */
46 #define F_INTERWORK EF_INTERWORK
47 #define F_APCS26 EF_APCS_26
48 #define F_APCS_FLOAT EF_APCS_FLOAT
50 #define F_SOFT_FLOAT EF_SOFT_FLOAT
52 /* Additional symbol types for Thumb. */
53 #define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */
54 #define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */
56 /* ARM-specific values for sh_flags. */
57 #define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */
58 #define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */
60 /* ARM-specific program header flags. */
61 #define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */
62 #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */
63 #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */
65 /* Relocation types. */
67 START_RELOC_NUMBERS (elf_arm_reloc_type
)
68 RELOC_NUMBER (R_ARM_NONE
, 0)
69 RELOC_NUMBER (R_ARM_PC24
, 1)
70 RELOC_NUMBER (R_ARM_ABS32
, 2)
71 RELOC_NUMBER (R_ARM_REL32
, 3)
73 RELOC_NUMBER (R_ARM_ABS8
, 4)
74 RELOC_NUMBER (R_ARM_ABS16
, 5)
75 RELOC_NUMBER (R_ARM_ABS12
, 6)
76 RELOC_NUMBER (R_ARM_THM_ABS5
, 7)
77 RELOC_NUMBER (R_ARM_THM_PC22
, 8)
78 RELOC_NUMBER (R_ARM_SBREL32
, 9)
79 RELOC_NUMBER (R_ARM_AMP_VCALL9
, 10)
80 RELOC_NUMBER (R_ARM_THM_PC11
, 11) /* Cygnus extension to abi: Thumb unconditional branch. */
81 RELOC_NUMBER (R_ARM_THM_PC9
, 12) /* Cygnus extension to abi: Thumb conditional branch. */
82 RELOC_NUMBER (R_ARM_GNU_VTINHERIT
, 13)
83 RELOC_NUMBER (R_ARM_GNU_VTENTRY
, 14)
84 #else /* not OLD_ARM_ABI */
85 RELOC_NUMBER (R_ARM_PC13
, 4)
86 RELOC_NUMBER (R_ARM_ABS16
, 5)
87 RELOC_NUMBER (R_ARM_ABS12
, 6)
88 RELOC_NUMBER (R_ARM_THM_ABS5
, 7)
89 RELOC_NUMBER (R_ARM_ABS8
, 8)
90 RELOC_NUMBER (R_ARM_SBREL32
, 9)
91 RELOC_NUMBER (R_ARM_THM_PC22
, 10)
92 RELOC_NUMBER (R_ARM_THM_PC8
, 11)
93 RELOC_NUMBER (R_ARM_AMP_VCALL9
, 12)
94 RELOC_NUMBER (R_ARM_SWI24
, 13)
95 RELOC_NUMBER (R_ARM_THM_SWI8
, 14)
96 RELOC_NUMBER (R_ARM_XPC25
, 15)
97 RELOC_NUMBER (R_ARM_THM_XPC22
, 16)
98 #endif /* not OLD_ARM_ABI */
99 RELOC_NUMBER (R_ARM_COPY
, 20) /* Copy symbol at runtime. */
100 RELOC_NUMBER (R_ARM_GLOB_DAT
, 21) /* Create GOT entry. */
101 RELOC_NUMBER (R_ARM_JUMP_SLOT
, 22) /* Create PLT entry. */
102 RELOC_NUMBER (R_ARM_RELATIVE
, 23) /* Adjust by program base. */
103 RELOC_NUMBER (R_ARM_GOTOFF
, 24) /* 32 bit offset to GOT. */
104 RELOC_NUMBER (R_ARM_GOTPC
, 25) /* 32 bit PC relative offset to GOT. */
105 RELOC_NUMBER (R_ARM_GOT32
, 26) /* 32 bit GOT entry. */
106 RELOC_NUMBER (R_ARM_PLT32
, 27) /* 32 bit PLT address. */
108 FAKE_RELOC (FIRST_INVALID_RELOC
, 28)
109 FAKE_RELOC (LAST_INVALID_RELOC
, 249)
110 #else /* not OLD_ARM_ABI */
111 FAKE_RELOC (FIRST_INVALID_RELOC1
, 28)
112 FAKE_RELOC (LAST_INVALID_RELOC1
, 99)
113 RELOC_NUMBER (R_ARM_GNU_VTENTRY
, 100)
114 RELOC_NUMBER (R_ARM_GNU_VTINHERIT
, 101)
115 RELOC_NUMBER (R_ARM_THM_PC11
, 102) /* Cygnus extension to abi: Thumb unconditional branch. */
116 RELOC_NUMBER (R_ARM_THM_PC9
, 103) /* Cygnus extension to abi: Thumb conditional branch. */
117 FAKE_RELOC (FIRST_INVALID_RELOC2
, 104)
118 FAKE_RELOC (LAST_INVALID_RELOC2
, 248)
119 RELOC_NUMBER (R_ARM_RXPC25
, 249)
120 #endif /* not OLD_ARM_ABI */
121 RELOC_NUMBER (R_ARM_RSBREL32
, 250)
122 RELOC_NUMBER (R_ARM_THM_RPC22
, 251)
123 RELOC_NUMBER (R_ARM_RREL32
, 252)
124 RELOC_NUMBER (R_ARM_RABS32
, 253)
125 RELOC_NUMBER (R_ARM_RPC24
, 254)
126 RELOC_NUMBER (R_ARM_RBASE
, 255)
127 END_RELOC_NUMBERS (R_ARM_max
)
129 #endif /* _ELF_ARM_H */
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