1// powerpc.h -- ELF definitions specific to EM_PPC and EM_PPC64  -*- C++ -*-
2
3// Copyright (C) 2008-2017 Free Software Foundation, Inc.
4// Written by David S. Miller <davem@davemloft.net>.
5
6// This file is part of elfcpp.
7
8// This program is free software; you can redistribute it and/or
9// modify it under the terms of the GNU Library General Public License
10// as published by the Free Software Foundation; either version 2, or
11// (at your option) any later version.
12
13// In addition to the permissions in the GNU Library General Public
14// License, the Free Software Foundation gives you unlimited
15// permission to link the compiled version of this file into
16// combinations with other programs, and to distribute those
17// combinations without any restriction coming from the use of this
18// file.  (The Library Public License restrictions do apply in other
19// respects; for example, they cover modification of the file, and
20/// distribution when not linked into a combined executable.)
21
22// This program is distributed in the hope that it will be useful, but
23// WITHOUT ANY WARRANTY; without even the implied warranty of
24// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
25// Library General Public License for more details.
26
27// You should have received a copy of the GNU Library General Public
28// License along with this program; if not, write to the Free Software
29// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
30// 02110-1301, USA.
31
32#ifndef ELFCPP_POWERPC_H
33#define ELFCPP_POWERPC_H
34
35namespace elfcpp
36{
37
38// The relocation numbers for 32-bit and 64-bit powerpc are nearly
39// identical.  Therefore I've adopted the convention of using
40// R_POWERPC_foo for values which are the same in R_PPC_* and R_PPC64_*.
41// For relocations which are specific to the word size I will use
42// R_PPC_foo or R_PPC64_foo.
43enum
44{
45  R_POWERPC_NONE = 0,
46  R_POWERPC_ADDR32 = 1,
47  R_POWERPC_ADDR24 = 2,
48  R_POWERPC_ADDR16 = 3,
49  R_POWERPC_ADDR16_LO = 4,
50  R_POWERPC_ADDR16_HI = 5,
51  R_POWERPC_ADDR16_HA = 6,
52  R_POWERPC_ADDR14 = 7,
53  R_POWERPC_ADDR14_BRTAKEN = 8,
54  R_POWERPC_ADDR14_BRNTAKEN = 9,
55  R_POWERPC_REL24 = 10,
56  R_POWERPC_REL14 = 11,
57  R_POWERPC_REL14_BRTAKEN = 12,
58  R_POWERPC_REL14_BRNTAKEN = 13,
59  R_POWERPC_GOT16 = 14,
60  R_POWERPC_GOT16_LO = 15,
61  R_POWERPC_GOT16_HI = 16,
62  R_POWERPC_GOT16_HA = 17,
63  R_PPC_PLTREL24 = 18,
64  R_POWERPC_COPY = 19,
65  R_POWERPC_GLOB_DAT = 20,
66  R_POWERPC_JMP_SLOT = 21,
67  R_POWERPC_RELATIVE = 22,
68  R_PPC_LOCAL24PC = 23,
69  R_POWERPC_UADDR32 = 24,
70  R_POWERPC_UADDR16 = 25,
71  R_POWERPC_REL32 = 26,
72  R_POWERPC_PLT32 = 27,
73  R_POWERPC_PLTREL32 = 28,
74  R_POWERPC_PLT16_LO = 29,
75  R_POWERPC_PLT16_HI = 30,
76  R_POWERPC_PLT16_HA = 31,
77  R_PPC_SDAREL16 = 32,
78  R_POWERPC_SECTOFF = 33,
79  R_POWERPC_SECTOFF_LO = 34,
80  R_POWERPC_SECTOFF_HI = 35,
81  R_POWERPC_SECTOFF_HA = 36,
82  R_POWERPC_ADDR30 = 37,
83  R_PPC64_ADDR64 = 38,
84  R_PPC64_ADDR16_HIGHER = 39,
85  R_PPC64_ADDR16_HIGHERA = 40,
86  R_PPC64_ADDR16_HIGHEST = 41,
87  R_PPC64_ADDR16_HIGHESTA = 42,
88  R_PPC64_UADDR64 = 43,
89  R_PPC64_REL64 = 44,
90  R_PPC64_PLT64 = 45,
91  R_PPC64_PLTREL64 = 46,
92  R_PPC64_TOC16 = 47,
93  R_PPC64_TOC16_LO = 48,
94  R_PPC64_TOC16_HI = 49,
95  R_PPC64_TOC16_HA = 50,
96  R_PPC64_TOC = 51,
97  R_PPC64_PLTGOT16 = 52,
98  R_PPC64_PLTGOT16_LO = 53,
99  R_PPC64_PLTGOT16_HI = 54,
100  R_PPC64_PLTGOT16_HA = 55,
101  R_PPC64_ADDR16_DS = 56,
102  R_PPC64_ADDR16_LO_DS = 57,
103  R_PPC64_GOT16_DS = 58,
104  R_PPC64_GOT16_LO_DS = 59,
105  R_PPC64_PLT16_LO_DS = 60,
106  R_PPC64_SECTOFF_DS = 61,
107  R_PPC64_SECTOFF_LO_DS = 62,
108  R_PPC64_TOC16_DS = 63,
109  R_PPC64_TOC16_LO_DS = 64,
110  R_PPC64_PLTGOT16_DS = 65,
111  R_PPC64_PLTGOT16_LO_DS = 66,
112  R_POWERPC_TLS = 67,
113  R_POWERPC_DTPMOD = 68,
114  R_POWERPC_TPREL16 = 69,
115  R_POWERPC_TPREL16_LO = 70,
116  R_POWERPC_TPREL16_HI = 71,
117  R_POWERPC_TPREL16_HA = 72,
118  R_POWERPC_TPREL = 73,
119  R_POWERPC_DTPREL16 = 74,
120  R_POWERPC_DTPREL16_LO = 75,
121  R_POWERPC_DTPREL16_HI = 76,
122  R_POWERPC_DTPREL16_HA = 77,
123  R_POWERPC_DTPREL = 78,
124  R_POWERPC_GOT_TLSGD16 = 79,
125  R_POWERPC_GOT_TLSGD16_LO = 80,
126  R_POWERPC_GOT_TLSGD16_HI = 81,
127  R_POWERPC_GOT_TLSGD16_HA = 82,
128  R_POWERPC_GOT_TLSLD16 = 83,
129  R_POWERPC_GOT_TLSLD16_LO = 84,
130  R_POWERPC_GOT_TLSLD16_HI = 85,
131  R_POWERPC_GOT_TLSLD16_HA = 86,
132  R_POWERPC_GOT_TPREL16 = 87,
133  R_POWERPC_GOT_TPREL16_LO = 88,
134  R_POWERPC_GOT_TPREL16_HI = 89,
135  R_POWERPC_GOT_TPREL16_HA = 90,
136  R_POWERPC_GOT_DTPREL16 = 91,
137  R_POWERPC_GOT_DTPREL16_LO = 92,
138  R_POWERPC_GOT_DTPREL16_HI = 93,
139  R_POWERPC_GOT_DTPREL16_HA = 94,
140  R_PPC_TLSGD = 95,
141  R_PPC64_TPREL16_DS = 95,
142  R_PPC_TLSLD = 96,
143  R_PPC64_TPREL16_LO_DS = 96,
144  R_PPC64_TPREL16_HIGHER = 97,
145  R_PPC64_TPREL16_HIGHERA = 98,
146  R_PPC64_TPREL16_HIGHEST = 99,
147  R_PPC64_TPREL16_HIGHESTA = 100,
148  R_PPC_EMB_NADDR32 = 101,
149  R_PPC64_DTPREL16_DS = 101,
150  R_PPC_EMB_NADDR16 = 102,
151  R_PPC64_DTPREL16_LO_DS = 102,
152  R_PPC_EMB_NADDR16_LO = 103,
153  R_PPC64_DTPREL16_HIGHER = 103,
154  R_PPC_EMB_NADDR16_HI = 104,
155  R_PPC64_DTPREL16_HIGHERA = 104,
156  R_PPC_EMB_NADDR16_HA = 105,
157  R_PPC64_DTPREL16_HIGHEST = 105,
158  R_PPC_EMB_SDAI16 = 106,
159  R_PPC64_DTPREL16_HIGHESTA = 106,
160  R_PPC_EMB_SDA2I16 = 107,
161  R_PPC64_TLSGD = 107,
162  R_PPC_EMB_SDA2REL = 108,
163  R_PPC64_TLSLD = 108,
164  R_PPC_EMB_SDA21 = 109,
165  R_PPC64_TOCSAVE = 109,
166  R_PPC_EMB_MRKREF = 110,
167  R_PPC64_ADDR16_HIGH = 110,
168  R_PPC_EMB_RELSEC16 = 111,
169  R_PPC64_ADDR16_HIGHA = 111,
170  R_PPC_EMB_RELST_LO = 112,
171  R_PPC64_TPREL16_HIGH = 112,
172  R_PPC_EMB_RELST_HI = 113,
173  R_PPC64_TPREL16_HIGHA = 113,
174  R_PPC_EMB_RELST_HA = 114,
175  R_PPC64_DTPREL16_HIGH = 114,
176  R_PPC_EMB_BIT_FLD = 115,
177  R_PPC64_DTPREL16_HIGHA = 115,
178  R_PPC_EMB_RELSDA = 116,
179  R_PPC64_REL24_NOTOC = 116,
180  R_PPC64_ADDR64_LOCAL = 117,
181  R_PPC64_ENTRY = 118,
182
183  R_PPC_VLE_REL8 = 216,
184  R_PPC_VLE_REL15 = 217,
185  R_PPC_VLE_REL24 = 218,
186  R_PPC_VLE_LO16A = 219,
187  R_PPC_VLE_LO16D = 220,
188  R_PPC_VLE_HI16A = 221,
189  R_PPC_VLE_HI16D = 222,
190  R_PPC_VLE_HA16A = 223,
191  R_PPC_VLE_HA16D = 224,
192  R_PPC_VLE_SDA21 = 225,
193  R_PPC_VLE_SDA21_LO = 226,
194  R_PPC_VLE_SDAREL_LO16A = 227,
195  R_PPC_VLE_SDAREL_LO16D = 228,
196  R_PPC_VLE_SDAREL_HI16A = 229,
197  R_PPC_VLE_SDAREL_HI16D = 230,
198  R_PPC_VLE_SDAREL_HA16A = 231,
199  R_PPC_VLE_SDAREL_HA16D = 232,
200
201  R_POWERPC_REL16DX_HA = 246,
202  R_PPC64_JMP_IREL = 247,
203  R_POWERPC_IRELATIVE = 248,
204  R_POWERPC_REL16 = 249,
205  R_POWERPC_REL16_LO = 250,
206  R_POWERPC_REL16_HI = 251,
207  R_POWERPC_REL16_HA = 252,
208  R_POWERPC_GNU_VTINHERIT = 253,
209  R_POWERPC_GNU_VTENTRY = 254,
210  R_PPC_TOC16 = 255,
211};
212
213// e_flags values defined for powerpc
214enum
215{
216  EF_PPC_EMB = 0x80000000,             // PowerPC embedded flag.
217  EF_PPC_RELOCATABLE = 0x00010000,     // PowerPC -mrelocatable flag.  */
218  EF_PPC_RELOCATABLE_LIB = 0x00008000, // PowerPC -mrelocatable-lib flag.  */
219};
220
221// e_flags values defined for powerpc64
222enum
223{
224  // ABI version
225  // 1 for original function descriptor using ABI,
226  // 2 for revised ABI without function descriptors,
227  // 0 for unspecified or not using any features affected by the differences.
228  EF_PPC64_ABI = 3
229};
230
231enum
232{
233  // The ELFv2 ABI uses three bits in the symbol st_other field of a
234  // function definition to specify the number of instructions between a
235  // function's global entry point and local entry point.
236  // The global entry point is used when it is necessary to set up the
237  // toc pointer (r2) for the function.  Callers must enter the global
238  // entry point with r12 set to the global entry point address.  On
239  // return from the function, r2 may have a different value to that
240  // which it had on entry.
241  // The local entry point is used when r2 is known to already be valid
242  // for the function.  There is no requirement on r12 when using the
243  // local entry point, and on return r2 will contain the same value as
244  // at entry.
245  // A value of zero in these bits means that the function has a single
246  // entry point with no requirement on r12 or r2, and that on return r2
247  // will contain the same value as at entry.
248  // Values of one and seven are reserved.
249
250  STO_PPC64_LOCAL_BIT = 5,
251  STO_PPC64_LOCAL_MASK = 0xE0
252};
253
254// 3 bit other field to bytes.
255static inline unsigned int
256ppc64_decode_local_entry(unsigned int other)
257{
258  return ((1 << other) >> 2) << 2;
259}
260
261// bytes to field value.
262static inline unsigned int
263ppc64_encode_local_entry(unsigned int val)
264{
265  return (val >= 4 * 4
266	  ? (val >= 8 * 4
267	     ? (val >= 16 * 4 ? 6 : 5)
268	     : 4)
269	  : (val >= 2 * 4
270	     ? 3
271	     : (val >= 1 * 4 ? 2 : 0)));
272}
273
274} // End namespace elfcpp.
275
276#endif // !defined(ELFCPP_POWERPC_H)
277