1 /* ARM ELF support for BFD.
2 Copyright 1998, 1999, 2000, 2001 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_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
37 /* Other constants defined in the ARM ELF spec. version B-01. */
38 #define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */
39 #define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */
40 #define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */
41 #define EF_ARM_EABIMASK 0xFF000000
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
46 #define EF_ARM_EABI_VER2 0x02000000
48 /* Local aliases for some flags to match names used by COFF port. */
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
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. */
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. */
63 /* ARM-specific program header flags. */
64 #define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */
65 #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */
66 #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */
68 /* Relocation types. */
70 START_RELOC_NUMBERS (elf_arm_reloc_type
)
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)
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. */
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)
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)
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. */
128 FAKE_RELOC (FIRST_INVALID_RELOC3
, 104)
129 FAKE_RELOC (LAST_INVALID_RELOC3
, 248)
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)
138 END_RELOC_NUMBERS (R_ARM_max
)
140 #endif /* _ELF_ARM_H */