1 // powerpc.h -- ELF definitions specific to EM_PPC and EM_PPC64 -*- C++ -*-
2
3 // Copyright (C) 2008-2023 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
35 namespace 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.
43 enum
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 R_POWERPC_PLTSEQ = 119,
183 R_POWERPC_PLTCALL = 120,
184 R_PPC64_PLTSEQ_NOTOC = 121,
185 R_PPC64_PLTCALL_NOTOC = 122,
186 R_PPC64_PCREL_OPT = 123,
187 R_PPC64_REL24_P9NOTOC = 124,
188
189 R_PPC64_D34 = 128,
190 R_PPC64_D34_LO = 129,
191 R_PPC64_D34_HI30 = 130,
192 R_PPC64_D34_HA30 = 131,
193 R_PPC64_PCREL34 = 132,
194 R_PPC64_GOT_PCREL34 = 133,
195 R_PPC64_PLT_PCREL34 = 134,
196 R_PPC64_PLT_PCREL34_NOTOC = 135,
197 R_PPC64_ADDR16_HIGHER34 = 136,
198 R_PPC64_ADDR16_HIGHERA34 = 137,
199 R_PPC64_ADDR16_HIGHEST34 = 138,
200 R_PPC64_ADDR16_HIGHESTA34 = 139,
201 R_PPC64_REL16_HIGHER34 = 140,
202 R_PPC64_REL16_HIGHERA34 = 141,
203 R_PPC64_REL16_HIGHEST34 = 142,
204 R_PPC64_REL16_HIGHESTA34 = 143,
205 R_PPC64_D28 = 144,
206 R_PPC64_PCREL28 = 145,
207 R_PPC64_TPREL34 = 146,
208 R_PPC64_DTPREL34 = 147,
209 R_PPC64_GOT_TLSGD_PCREL34 = 148,
210 R_PPC64_GOT_TLSLD_PCREL34 = 149,
211 R_PPC64_GOT_TPREL_PCREL34 = 150,
212 R_PPC64_GOT_DTPREL_PCREL34 = 151,
213
214 R_PPC_VLE_REL8 = 216,
215 R_PPC_VLE_REL15 = 217,
216 R_PPC_VLE_REL24 = 218,
217 R_PPC_VLE_LO16A = 219,
218 R_PPC_VLE_LO16D = 220,
219 R_PPC_VLE_HI16A = 221,
220 R_PPC_VLE_HI16D = 222,
221 R_PPC_VLE_HA16A = 223,
222 R_PPC_VLE_HA16D = 224,
223 R_PPC_VLE_SDA21 = 225,
224 R_PPC_VLE_SDA21_LO = 226,
225 R_PPC_VLE_SDAREL_LO16A = 227,
226 R_PPC_VLE_SDAREL_LO16D = 228,
227 R_PPC_VLE_SDAREL_HI16A = 229,
228 R_PPC_VLE_SDAREL_HI16D = 230,
229 R_PPC_VLE_SDAREL_HA16A = 231,
230 R_PPC_VLE_SDAREL_HA16D = 232,
231
232 R_PPC64_REL16_HIGH = 240,
233 R_PPC64_REL16_HIGHA = 241,
234 R_PPC64_REL16_HIGHER = 242,
235 R_PPC64_REL16_HIGHERA = 243,
236 R_PPC64_REL16_HIGHEST = 244,
237 R_PPC64_REL16_HIGHESTA = 245,
238
239 R_POWERPC_REL16DX_HA = 246,
240 R_PPC64_JMP_IREL = 247,
241 R_POWERPC_IRELATIVE = 248,
242 R_POWERPC_REL16 = 249,
243 R_POWERPC_REL16_LO = 250,
244 R_POWERPC_REL16_HI = 251,
245 R_POWERPC_REL16_HA = 252,
246 R_POWERPC_GNU_VTINHERIT = 253,
247 R_POWERPC_GNU_VTENTRY = 254,
248 R_PPC_TOC16 = 255,
249 };
250
251 // e_flags values defined for powerpc
252 enum
253 {
254 EF_PPC_EMB = 0x80000000, // PowerPC embedded flag.
255 EF_PPC_RELOCATABLE = 0x00010000, // PowerPC -mrelocatable flag. */
256 EF_PPC_RELOCATABLE_LIB = 0x00008000, // PowerPC -mrelocatable-lib flag. */
257 };
258
259 // e_flags values defined for powerpc64
260 enum
261 {
262 // ABI version
263 // 1 for original function descriptor using ABI,
264 // 2 for revised ABI without function descriptors,
265 // 0 for unspecified or not using any features affected by the differences.
266 EF_PPC64_ABI = 3
267 };
268
269 // Object attribute tags. 0-3 are generic.
270 enum
271 {
272 // FP ABI, low 2 bits:
273 // 1 for double precision hard-float,
274 // 2 for soft-float,
275 // 3 for single precision hard-float.
276 // 0 for not tagged or not using any ABIs affected by the differences.
277 // Next 2 bits:
278 // 1 for ibm long double
279 // 2 for 64-bit long double
280 // 3 for IEEE long double.
281 // 0 for not tagged or not using any ABIs affected by the differences.
282 Tag_GNU_Power_ABI_FP = 4,
283
284 // Value 1 for general purpose registers only, 2 for AltiVec
285 // registers, 3 for SPE registers; 0 for not tagged or not using any
286 // ABIs affected by the differences.
287 Tag_GNU_Power_ABI_Vector = 8,
288
289 // Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes,
290 // 2 for ABIs using memory; 0 for not tagged or not using any ABIs
291 // affected by the differences.
292 Tag_GNU_Power_ABI_Struct_Return = 12
293 };
294
295 // DT_PPC_OPT bits
296 enum
297 {
298 PPC_OPT_TLS = 1
299 };
300
301 // DT_PPC64_OPT bits
302 enum
303 {
304 PPC64_OPT_TLS = 1,
305 PPC64_OPT_MULTI_TOC = 2,
306 PPC64_OPT_LOCALENTRY = 4
307 };
308
309 enum
310 {
311 // The ELFv2 ABI uses three bits in the symbol st_other field of a
312 // function definition to specify the number of instructions between a
313 // function's global entry point and local entry point.
314 // The global entry point is used when it is necessary to set up the
315 // toc pointer (r2) for the function. Callers must enter the global
316 // entry point with r12 set to the global entry point address. On
317 // return from the function, r2 may have a different value to that
318 // which it had on entry.
319 // The local entry point is used when r2 is known to already be valid
320 // for the function. There is no requirement on r12 when using the
321 // local entry point, and on return r2 will contain the same value as
322 // at entry.
323 // A value of zero in these bits means that the function has a single
324 // entry point with no requirement on r12 or r2, and that on return r2
325 // will contain the same value as at entry.
326 // Values of one and seven are reserved.
327
328 STO_PPC64_LOCAL_BIT = 5,
329 STO_PPC64_LOCAL_MASK = 0xE0
330 };
331
332 // 3 bit other field to bytes.
333 static inline unsigned int
334 ppc64_decode_local_entry(unsigned int other)
335 {
336 return ((1 << other) >> 2) << 2;
337 }
338
339 // bytes to field value.
340 static inline unsigned int
341 ppc64_encode_local_entry(unsigned int val)
342 {
343 return (val >= 4 * 4
344 ? (val >= 8 * 4
345 ? (val >= 16 * 4 ? 6 : 5)
346 : 4)
347 : (val >= 2 * 4
348 ? 3
349 : (val >= 1 * 4 ? 2 : 0)));
350 }
351
352 } // End namespace elfcpp.
353
354 #endif // !defined(ELFCPP_POWERPC_H)