aboutsummaryrefslogtreecommitdiff
path: root/include/elf/ppc.h
blob: b4c73fefb90e0357bb6a8c86f63da6410d0847ba (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
/* PPC ELF support for BFD.
   Copyright (C) 1995-2015 Free Software Foundation, Inc.

   By Michael Meissner, Cygnus Support, <meissner@cygnus.com>,
   from information in the System V Application Binary Interface,
   PowerPC Processor Supplement and the PowerPC Embedded Application
   Binary Interface (eabi).

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */

/* This file holds definitions specific to the PPC ELF ABI.  Note
   that most of this is not actually implemented by BFD.  */

#ifndef _ELF_PPC_H
#define _ELF_PPC_H

#include "elf/reloc-macros.h"

/* Relocations.  */
START_RELOC_NUMBERS (elf_ppc_reloc_type)
  RELOC_NUMBER (R_PPC_NONE,		  0)
  RELOC_NUMBER (R_PPC_ADDR32,		  1)
  RELOC_NUMBER (R_PPC_ADDR24,		  2)
  RELOC_NUMBER (R_PPC_ADDR16,		  3)
  RELOC_NUMBER (R_PPC_ADDR16_LO,	  4)
  RELOC_NUMBER (R_PPC_ADDR16_HI,	  5)
  RELOC_NUMBER (R_PPC_ADDR16_HA,	  6)
  RELOC_NUMBER (R_PPC_ADDR14,		  7)
  RELOC_NUMBER (R_PPC_ADDR14_BRTAKEN,	  8)
  RELOC_NUMBER (R_PPC_ADDR14_BRNTAKEN,	  9)
  RELOC_NUMBER (R_PPC_REL24,		 10)
  RELOC_NUMBER (R_PPC_REL14,		 11)
  RELOC_NUMBER (R_PPC_REL14_BRTAKEN,	 12)
  RELOC_NUMBER (R_PPC_REL14_BRNTAKEN,	 13)
  RELOC_NUMBER (R_PPC_GOT16,		 14)
  RELOC_NUMBER (R_PPC_GOT16_LO,		 15)
  RELOC_NUMBER (R_PPC_GOT16_HI,		 16)
  RELOC_NUMBER (R_PPC_GOT16_HA,		 17)
  RELOC_NUMBER (R_PPC_PLTREL24,		 18)
  RELOC_NUMBER (R_PPC_COPY,		 19)
  RELOC_NUMBER (R_PPC_GLOB_DAT,		 20)
  RELOC_NUMBER (R_PPC_JMP_SLOT,		 21)
  RELOC_NUMBER (R_PPC_RELATIVE,		 22)
  RELOC_NUMBER (R_PPC_LOCAL24PC,	 23)
  RELOC_NUMBER (R_PPC_UADDR32,		 24)
  RELOC_NUMBER (R_PPC_UADDR16,		 25)
  RELOC_NUMBER (R_PPC_REL32,		 26)
  RELOC_NUMBER (R_PPC_PLT32,		 27)
  RELOC_NUMBER (R_PPC_PLTREL32,		 28)
  RELOC_NUMBER (R_PPC_PLT16_LO,		 29)
  RELOC_NUMBER (R_PPC_PLT16_HI,		 30)
  RELOC_NUMBER (R_PPC_PLT16_HA,		 31)
  RELOC_NUMBER (R_PPC_SDAREL16,		 32)
  RELOC_NUMBER (R_PPC_SECTOFF,		 33)
  RELOC_NUMBER (R_PPC_SECTOFF_LO,	 34)
  RELOC_NUMBER (R_PPC_SECTOFF_HI,	 35)
  RELOC_NUMBER (R_PPC_SECTOFF_HA,	 36)
  RELOC_NUMBER (R_PPC_ADDR30,		 37)

#ifndef RELOC_MACROS_GEN_FUNC
/* Fake relocations for branch stubs, only used internally by ld.  */
  RELOC_NUMBER (R_PPC_RELAX,		 48)
  RELOC_NUMBER (R_PPC_RELAX_PLT,	 49)
  RELOC_NUMBER (R_PPC_RELAX_PLTREL24,	 50)
#endif

  /* Relocs added to support TLS.  */
  RELOC_NUMBER (R_PPC_TLS,		 67)
  RELOC_NUMBER (R_PPC_DTPMOD32,		 68)
  RELOC_NUMBER (R_PPC_TPREL16,		 69)
  RELOC_NUMBER (R_PPC_TPREL16_LO,	 70)
  RELOC_NUMBER (R_PPC_TPREL16_HI,	 71)
  RELOC_NUMBER (R_PPC_TPREL16_HA,	 72)
  RELOC_NUMBER (R_PPC_TPREL32,		 73)
  RELOC_NUMBER (R_PPC_DTPREL16,		 74)
  RELOC_NUMBER (R_PPC_DTPREL16_LO,	 75)
  RELOC_NUMBER (R_PPC_DTPREL16_HI,	 76)
  RELOC_NUMBER (R_PPC_DTPREL16_HA,	 77)
  RELOC_NUMBER (R_PPC_DTPREL32,		 78)
  RELOC_NUMBER (R_PPC_GOT_TLSGD16,	 79)
  RELOC_NUMBER (R_PPC_GOT_TLSGD16_LO,	 80)
  RELOC_NUMBER (R_PPC_GOT_TLSGD16_HI,	 81)
  RELOC_NUMBER (R_PPC_GOT_TLSGD16_HA,	 82)
  RELOC_NUMBER (R_PPC_GOT_TLSLD16,	 83)
  RELOC_NUMBER (R_PPC_GOT_TLSLD16_LO,	 84)
  RELOC_NUMBER (R_PPC_GOT_TLSLD16_HI,	 85)
  RELOC_NUMBER (R_PPC_GOT_TLSLD16_HA,	 86)
  RELOC_NUMBER (R_PPC_GOT_TPREL16,	 87)
  RELOC_NUMBER (R_PPC_GOT_TPREL16_LO,	 88)
  RELOC_NUMBER (R_PPC_GOT_TPREL16_HI,	 89)
  RELOC_NUMBER (R_PPC_GOT_TPREL16_HA,	 90)
  RELOC_NUMBER (R_PPC_GOT_DTPREL16,	 91)
  RELOC_NUMBER (R_PPC_GOT_DTPREL16_LO,	 92)
  RELOC_NUMBER (R_PPC_GOT_DTPREL16_HI,	 93)
  RELOC_NUMBER (R_PPC_GOT_DTPREL16_HA,	 94)
  RELOC_NUMBER (R_PPC_TLSGD,		 95)
  RELOC_NUMBER (R_PPC_TLSLD,		 96)

/* The remaining relocs are from the Embedded ELF ABI, and are not
   in the SVR4 ELF ABI.  */
  RELOC_NUMBER (R_PPC_EMB_NADDR32,	101)
  RELOC_NUMBER (R_PPC_EMB_NADDR16,	102)
  RELOC_NUMBER (R_PPC_EMB_NADDR16_LO,	103)
  RELOC_NUMBER (R_PPC_EMB_NADDR16_HI,	104)
  RELOC_NUMBER (R_PPC_EMB_NADDR16_HA,	105)
  RELOC_NUMBER (R_PPC_EMB_SDAI16,	106)
  RELOC_NUMBER (R_PPC_EMB_SDA2I16,	107)
  RELOC_NUMBER (R_PPC_EMB_SDA2REL,	108)
  RELOC_NUMBER (R_PPC_EMB_SDA21,	109)
  RELOC_NUMBER (R_PPC_EMB_MRKREF,	110)
  RELOC_NUMBER (R_PPC_EMB_RELSEC16,	111)
  RELOC_NUMBER (R_PPC_EMB_RELST_LO,	112)
  RELOC_NUMBER (R_PPC_EMB_RELST_HI,	113)
  RELOC_NUMBER (R_PPC_EMB_RELST_HA,	114)
  RELOC_NUMBER (R_PPC_EMB_BIT_FLD,	115)
  RELOC_NUMBER (R_PPC_EMB_RELSDA,	116)

/* PowerPC VLE relocations.  */
  RELOC_NUMBER (R_PPC_VLE_REL8,		216)
  RELOC_NUMBER (R_PPC_VLE_REL15,	217)
  RELOC_NUMBER (R_PPC_VLE_REL24,	218)
  RELOC_NUMBER (R_PPC_VLE_LO16A,	219)
  RELOC_NUMBER (R_PPC_VLE_LO16D,	220)
  RELOC_NUMBER (R_PPC_VLE_HI16A,	221)
  RELOC_NUMBER (R_PPC_VLE_HI16D,	222)
  RELOC_NUMBER (R_PPC_VLE_HA16A,	223)
  RELOC_NUMBER (R_PPC_VLE_HA16D,	224)
  RELOC_NUMBER (R_PPC_VLE_SDA21,	225)
  RELOC_NUMBER (R_PPC_VLE_SDA21_LO,	226)
  RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16A,	227)
  RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16D,	228)
  RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16A,	229)
  RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16D,	230)
  RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16A,	231)
  RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16D,	232)

/* Power9 split rel16 for addpcis.  */
  RELOC_NUMBER (R_PPC_REL16DX_HA,	246)

/* Support STT_GNU_IFUNC plt calls.  */
  RELOC_NUMBER (R_PPC_IRELATIVE,	248)

/* These are GNU extensions used in PIC code sequences.  */
  RELOC_NUMBER (R_PPC_REL16,		249)
  RELOC_NUMBER (R_PPC_REL16_LO,		250)
  RELOC_NUMBER (R_PPC_REL16_HI,		251)
  RELOC_NUMBER (R_PPC_REL16_HA,		252)

/* These are GNU extensions to enable C++ vtable garbage collection.  */
  RELOC_NUMBER (R_PPC_GNU_VTINHERIT,	253)
  RELOC_NUMBER (R_PPC_GNU_VTENTRY,	254)

/* This is a phony reloc to handle any old fashioned TOC16 references
   that may still be in object files.  */
  RELOC_NUMBER (R_PPC_TOC16,		255)

END_RELOC_NUMBERS (R_PPC_max)

#define IS_PPC_TLS_RELOC(R) \
  ((R) >= R_PPC_TLS && (R) <= R_PPC_GOT_DTPREL16_HA)

/* Specify the value of _GLOBAL_OFFSET_TABLE_.  */
#define DT_PPC_GOT		(DT_LOPROC)

/* Specify that tls descriptors should be optimized.  */
#define DT_PPC_OPT		(DT_LOPROC + 1)
#define PPC_OPT_TLS		1

/* Processor specific flags for the ELF header e_flags field.  */

#define	EF_PPC_EMB		0x80000000	/* PowerPC embedded flag.  */

#define	EF_PPC_RELOCATABLE	0x00010000	/* PowerPC -mrelocatable flag.  */
#define	EF_PPC_RELOCATABLE_LIB	0x00008000	/* PowerPC -mrelocatable-lib flag.  */

/* Processor specific program headers, p_flags field.  */
#define PF_PPC_VLE		0x10000000	/* PowerPC VLE.  */

/* Processor specific section headers, sh_flags field.  */
#define SHF_PPC_VLE		0x10000000	/* PowerPC VLE text section.  */

/* Processor specific section headers, sh_type field.  */

#define SHT_ORDERED		SHT_HIPROC	/* Link editor is to sort the \
						   entries in this section \
						   based on the address \
						   specified in the associated \
						   symbol table entry.  */

/* Object attribute tags.  */
enum
{
  /* 0-3 are generic.  */
  Tag_GNU_Power_ABI_FP = 4, /* Value 1 for hard-float, 2 for
			       soft-float, 3 for single=precision 
			       hard-float; 0 for not tagged or not
			       using any ABIs affected by the
			       differences.  */

  /* Value 1 for general purpose registers only, 2 for AltiVec
     registers, 3 for SPE registers; 0 for not tagged or not using any
     ABIs affected by the differences.  */
  Tag_GNU_Power_ABI_Vector = 8,

  /* Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes,
     2 for ABIs using memory; 0 for not tagged or not using any ABIs
     affected by the differences.  */
  Tag_GNU_Power_ABI_Struct_Return = 12
};

#endif /* _ELF_PPC_H */