1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2016 Free Software Foundation, Inc.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "opcode/ia64.h"
30 #include "bfd_stdint.h"
31 #include "elfxx-ia64.h"
33 /* THE RULES for all the stuff the linker creates --
35 GOT Entries created in response to LTOFF or LTOFF_FPTR
36 relocations. Dynamic relocs created for dynamic
37 symbols in an application; REL relocs for locals
40 FPTR The canonical function descriptor. Created for local
41 symbols in applications. Descriptors for dynamic symbols
42 and local symbols in shared libraries are created by
43 ld.so. Thus there are no dynamic relocs against these
44 objects. The FPTR relocs for such _are_ passed through
45 to the dynamic relocation tables.
47 FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
48 Requires the creation of a PLTOFF entry. This does not
49 require any dynamic relocations.
51 PLTOFF Created by PLTOFF relocations. For local symbols, this
52 is an alternate function descriptor, and in shared libraries
53 requires two REL relocations. Note that this cannot be
54 transformed into an FPTR relocation, since it must be in
55 range of the GP. For dynamic symbols, this is a function
56 descriptor for a MIN_PLT entry, and requires one IPLT reloc.
58 MIN_PLT Created by PLTOFF entries against dynamic symbols. This
59 does not require dynamic relocations. */
61 /* ia64-specific relocation. */
63 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
65 /* Perform a relocation. Not much to do here as all the hard work is
66 done in elfNN_ia64_final_link_relocate. */
67 static bfd_reloc_status_type
68 ia64_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc,
69 asymbol *sym ATTRIBUTE_UNUSED,
70 PTR data ATTRIBUTE_UNUSED, asection *input_section,
71 bfd *output_bfd, char **error_message)
75 reloc->address += input_section->output_offset;
79 if (input_section->flags & SEC_DEBUGGING)
80 return bfd_reloc_continue;
82 *error_message = "Unsupported call to ia64_elf_reloc";
83 return bfd_reloc_notsupported;
86 #define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \
87 HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \
88 ia64_elf_reloc, NAME, FALSE, 0, -1, IN)
90 /* This table has to be sorted according to increasing number of the
92 static reloc_howto_type ia64_howto_table[] =
94 IA64_HOWTO (R_IA64_NONE, "NONE", 3, FALSE, TRUE),
96 IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, FALSE, TRUE),
97 IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, FALSE, TRUE),
98 IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, FALSE, TRUE),
99 IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, FALSE, TRUE),
100 IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, FALSE, TRUE),
101 IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, FALSE, TRUE),
102 IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, FALSE, TRUE),
104 IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, FALSE, TRUE),
105 IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, FALSE, TRUE),
106 IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, FALSE, TRUE),
107 IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, FALSE, TRUE),
108 IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, FALSE, TRUE),
109 IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, FALSE, TRUE),
111 IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, FALSE, TRUE),
112 IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, FALSE, TRUE),
114 IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, FALSE, TRUE),
115 IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, FALSE, TRUE),
116 IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, FALSE, TRUE),
117 IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, FALSE, TRUE),
119 IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, FALSE, TRUE),
120 IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, FALSE, TRUE),
121 IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, FALSE, TRUE),
122 IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, FALSE, TRUE),
123 IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, FALSE, TRUE),
125 IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, TRUE, TRUE),
126 IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, TRUE, TRUE),
127 IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, TRUE, TRUE),
128 IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, TRUE, TRUE),
129 IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, TRUE, TRUE),
130 IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, TRUE, TRUE),
131 IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, TRUE, TRUE),
132 IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, TRUE, TRUE),
134 IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, FALSE, TRUE),
135 IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, FALSE, TRUE),
136 IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 2, FALSE, TRUE),
137 IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 2, FALSE, TRUE),
138 IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, FALSE, TRUE),
139 IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, FALSE, TRUE),
141 IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, FALSE, TRUE),
142 IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, FALSE, TRUE),
143 IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, FALSE, TRUE),
144 IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, FALSE, TRUE),
146 IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, FALSE, TRUE),
147 IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, FALSE, TRUE),
148 IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, FALSE, TRUE),
149 IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, FALSE, TRUE),
151 IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, FALSE, TRUE),
152 IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, FALSE, TRUE),
153 IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, FALSE, TRUE),
154 IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, FALSE, TRUE),
156 IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, FALSE, TRUE),
157 IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, FALSE, TRUE),
158 IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, FALSE, TRUE),
159 IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, FALSE, TRUE),
161 IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, TRUE, TRUE),
162 IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, TRUE, TRUE),
163 IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, TRUE, TRUE),
165 IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, FALSE, TRUE),
166 IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, FALSE, TRUE),
167 IA64_HOWTO (R_IA64_COPY, "COPY", 4, FALSE, TRUE),
168 IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, FALSE, TRUE),
169 IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, FALSE, TRUE),
171 IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, FALSE, FALSE),
172 IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, FALSE, FALSE),
173 IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, FALSE, FALSE),
174 IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 4, FALSE, FALSE),
175 IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 4, FALSE, FALSE),
176 IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, FALSE, FALSE),
178 IA64_HOWTO (R_IA64_DTPMOD64MSB, "DTPMOD64MSB", 4, FALSE, FALSE),
179 IA64_HOWTO (R_IA64_DTPMOD64LSB, "DTPMOD64LSB", 4, FALSE, FALSE),
180 IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, FALSE, FALSE),
182 IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, FALSE, FALSE),
183 IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, FALSE, FALSE),
184 IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, FALSE, FALSE),
185 IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 2, FALSE, FALSE),
186 IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 2, FALSE, FALSE),
187 IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 4, FALSE, FALSE),
188 IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 4, FALSE, FALSE),
189 IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, FALSE, FALSE),
192 static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
194 /* Given a BFD reloc type, return the matching HOWTO structure. */
197 ia64_elf_lookup_howto (unsigned int rtype)
199 static int inited = 0;
206 memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index));
207 for (i = 0; i < NELEMS (ia64_howto_table); ++i)
208 elf_code_to_howto_index[ia64_howto_table[i].type] = i;
211 if (rtype > R_IA64_MAX_RELOC_CODE)
213 i = elf_code_to_howto_index[rtype];
214 if (i >= NELEMS (ia64_howto_table))
216 return ia64_howto_table + i;
220 ia64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
221 bfd_reloc_code_real_type bfd_code)
227 case BFD_RELOC_NONE: rtype = R_IA64_NONE; break;
229 case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break;
230 case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break;
231 case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break;
233 case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break;
234 case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break;
235 case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break;
236 case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break;
238 case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break;
239 case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break;
240 case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break;
241 case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break;
242 case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break;
243 case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break;
245 case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break;
246 case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break;
248 case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break;
249 case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break;
250 case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break;
251 case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break;
252 case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break;
253 case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break;
254 case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break;
255 case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break;
256 case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break;
258 case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break;
259 case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break;
260 case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break;
261 case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break;
262 case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break;
263 case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break;
264 case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break;
265 case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break;
266 case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break;
267 case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break;
268 case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break;
270 case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break;
271 case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break;
272 case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break;
273 case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break;
274 case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break;
275 case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break;
277 case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break;
278 case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break;
279 case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break;
280 case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break;
282 case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break;
283 case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break;
284 case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break;
285 case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break;
287 case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break;
288 case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break;
289 case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break;
290 case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break;
292 case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break;
293 case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break;
294 case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break;
295 case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break;
297 case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break;
298 case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break;
299 case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break;
300 case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
301 case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
303 case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
304 case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
305 case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
306 case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
307 case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
308 case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
310 case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
311 case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
312 case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
314 case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
315 case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
316 case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
317 case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
318 case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
319 case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
320 case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
321 case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
325 return ia64_elf_lookup_howto (rtype);
329 ia64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
335 i < sizeof (ia64_howto_table) / sizeof (ia64_howto_table[0]);
337 if (ia64_howto_table[i].name != NULL
338 && strcasecmp (ia64_howto_table[i].name, r_name) == 0)
339 return &ia64_howto_table[i];
344 #define BTYPE_SHIFT 6
351 #define OPCODE_SHIFT 37
353 #define OPCODE_BITS (0xfLL << OPCODE_SHIFT)
354 #define X6_BITS (0x3fLL << X6_SHIFT)
355 #define X4_BITS (0xfLL << X4_SHIFT)
356 #define X3_BITS (0x7LL << X3_SHIFT)
357 #define X2_BITS (0x3LL << X2_SHIFT)
358 #define X_BITS (0x1LL << X_SHIFT)
359 #define Y_BITS (0x1LL << Y_SHIFT)
360 #define BTYPE_BITS (0x7LL << BTYPE_SHIFT)
361 #define PREDICATE_BITS (0x3fLL)
363 #define IS_NOP_B(i) \
364 (((i) & (OPCODE_BITS | X6_BITS)) == (2LL << OPCODE_SHIFT))
365 #define IS_NOP_F(i) \
366 (((i) & (OPCODE_BITS | X_BITS | X6_BITS | Y_BITS)) \
367 == (0x1LL << X6_SHIFT))
368 #define IS_NOP_I(i) \
369 (((i) & (OPCODE_BITS | X3_BITS | X6_BITS | Y_BITS)) \
370 == (0x1LL << X6_SHIFT))
371 #define IS_NOP_M(i) \
372 (((i) & (OPCODE_BITS | X3_BITS | X2_BITS | X4_BITS | Y_BITS)) \
373 == (0x1LL << X4_SHIFT))
374 #define IS_BR_COND(i) \
375 (((i) & (OPCODE_BITS | BTYPE_BITS)) == (0x4LL << OPCODE_SHIFT))
376 #define IS_BR_CALL(i) \
377 (((i) & OPCODE_BITS) == (0x5LL << OPCODE_SHIFT))
380 ia64_elf_relax_br (bfd_byte *contents, bfd_vma off)
382 unsigned int template_val, mlx;
383 bfd_vma t0, t1, s0, s1, s2, br_code;
387 hit_addr = (bfd_byte *) (contents + off);
388 br_slot = (intptr_t) hit_addr & 0x3;
390 t0 = bfd_getl64 (hit_addr + 0);
391 t1 = bfd_getl64 (hit_addr + 8);
393 /* Check if we can turn br into brl. A label is always at the start
394 of the bundle. Even if there are predicates on NOPs, we still
395 perform this optimization. */
396 template_val = t0 & 0x1e;
397 s0 = (t0 >> 5) & 0x1ffffffffffLL;
398 s1 = ((t0 >> 46) | (t1 << 18)) & 0x1ffffffffffLL;
399 s2 = (t1 >> 23) & 0x1ffffffffffLL;
403 /* Check if slot 1 and slot 2 are NOPs. Possible template is
404 BBB. We only need to check nop.b. */
405 if (!(IS_NOP_B (s1) && IS_NOP_B (s2)))
410 /* Check if slot 2 is NOP. Possible templates are MBB and BBB.
411 For BBB, slot 0 also has to be nop.b. */
412 if (!((template_val == 0x12 /* MBB */
414 || (template_val == 0x16 /* BBB */
421 /* Check if slot 1 is NOP. Possible templates are MIB, MBB, BBB,
422 MMB and MFB. For BBB, slot 0 also has to be nop.b. */
423 if (!((template_val == 0x10 /* MIB */
425 || (template_val == 0x12 /* MBB */
427 || (template_val == 0x16 /* BBB */
430 || (template_val == 0x18 /* MMB */
432 || (template_val == 0x1c /* MFB */
438 /* It should never happen. */
442 /* We can turn br.cond/br.call into brl.cond/brl.call. */
443 if (!(IS_BR_COND (br_code) || IS_BR_CALL (br_code)))
446 /* Turn br into brl by setting bit 40. */
447 br_code |= 0x1LL << 40;
449 /* Turn the old bundle into a MLX bundle with the same stop-bit
456 if (template_val == 0x16)
458 /* For BBB, we need to put nop.m in slot 0. We keep the original
459 predicate only if slot 0 isn't br. */
463 t0 &= PREDICATE_BITS << 5;
464 t0 |= 0x1LL << (X4_SHIFT + 5);
468 /* Keep the original instruction in slot 0. */
469 t0 &= 0x1ffffffffffLL << 5;
474 /* Put brl in slot 1. */
477 bfd_putl64 (t0, hit_addr);
478 bfd_putl64 (t1, hit_addr + 8);
483 ia64_elf_relax_brl (bfd_byte *contents, bfd_vma off)
487 bfd_vma t0, t1, i0, i1, i2;
489 hit_addr = (bfd_byte *) (contents + off);
490 hit_addr -= (intptr_t) hit_addr & 0x3;
491 t0 = bfd_getl64 (hit_addr);
492 t1 = bfd_getl64 (hit_addr + 8);
494 /* Keep the instruction in slot 0. */
495 i0 = (t0 >> 5) & 0x1ffffffffffLL;
496 /* Use nop.b for slot 1. */
498 /* For slot 2, turn brl into br by masking out bit 40. */
499 i2 = (t1 >> 23) & 0x0ffffffffffLL;
501 /* Turn a MLX bundle into a MBB bundle with the same stop-bit
507 t0 = (i1 << 46) | (i0 << 5) | template_val;
508 t1 = (i2 << 23) | (i1 >> 18);
510 bfd_putl64 (t0, hit_addr);
511 bfd_putl64 (t1, hit_addr + 8);
515 ia64_elf_relax_ldxmov (bfd_byte *contents, bfd_vma off)
520 switch ((int)off & 0x3)
522 case 0: shift = 5; break;
523 case 1: shift = 14; off += 3; break;
524 case 2: shift = 23; off += 6; break;
529 dword = bfd_getl64 (contents + off);
530 insn = (dword >> shift) & 0x1ffffffffffLL;
532 r1 = (insn >> 6) & 127;
533 r3 = (insn >> 20) & 127;
535 insn = 0x8000000; /* nop */
537 insn = (insn & 0x7f01fff) | 0x10800000000LL; /* (qp) mov r1 = r3 */
539 dword &= ~(0x1ffffffffffLL << shift);
540 dword |= (insn << shift);
541 bfd_putl64 (dword, contents + off);
544 bfd_reloc_status_type
545 ia64_elf_install_value (bfd_byte *hit_addr, bfd_vma v, unsigned int r_type)
547 const struct ia64_operand *op;
548 int bigendian = 0, shift = 0;
549 bfd_vma t0, t1, dword;
554 #ifdef BFD_HOST_U_64_BIT
555 BFD_HOST_U_64_BIT val = (BFD_HOST_U_64_BIT) v;
560 opnd = IA64_OPND_NIL;
567 /* Instruction relocations. */
571 case R_IA64_DTPREL14:
572 opnd = IA64_OPND_IMM14;
575 case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
576 case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
577 case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break;
578 case R_IA64_PCREL21B:
579 case R_IA64_PCREL21BI:
580 opnd = IA64_OPND_TGT25c;
586 case R_IA64_LTOFF22X:
587 case R_IA64_PLTOFF22:
589 case R_IA64_LTOFF_FPTR22:
591 case R_IA64_DTPREL22:
592 case R_IA64_LTOFF_TPREL22:
593 case R_IA64_LTOFF_DTPMOD22:
594 case R_IA64_LTOFF_DTPREL22:
595 opnd = IA64_OPND_IMM22;
599 case R_IA64_GPREL64I:
600 case R_IA64_LTOFF64I:
601 case R_IA64_PLTOFF64I:
602 case R_IA64_PCREL64I:
604 case R_IA64_LTOFF_FPTR64I:
605 case R_IA64_TPREL64I:
606 case R_IA64_DTPREL64I:
607 opnd = IA64_OPND_IMMU64;
610 /* Data relocations. */
612 case R_IA64_DIR32MSB:
613 case R_IA64_GPREL32MSB:
614 case R_IA64_FPTR32MSB:
615 case R_IA64_PCREL32MSB:
616 case R_IA64_LTOFF_FPTR32MSB:
617 case R_IA64_SEGREL32MSB:
618 case R_IA64_SECREL32MSB:
619 case R_IA64_LTV32MSB:
620 case R_IA64_DTPREL32MSB:
621 size = 4; bigendian = 1;
624 case R_IA64_DIR32LSB:
625 case R_IA64_GPREL32LSB:
626 case R_IA64_FPTR32LSB:
627 case R_IA64_PCREL32LSB:
628 case R_IA64_LTOFF_FPTR32LSB:
629 case R_IA64_SEGREL32LSB:
630 case R_IA64_SECREL32LSB:
631 case R_IA64_LTV32LSB:
632 case R_IA64_DTPREL32LSB:
633 size = 4; bigendian = 0;
636 case R_IA64_DIR64MSB:
637 case R_IA64_GPREL64MSB:
638 case R_IA64_PLTOFF64MSB:
639 case R_IA64_FPTR64MSB:
640 case R_IA64_PCREL64MSB:
641 case R_IA64_LTOFF_FPTR64MSB:
642 case R_IA64_SEGREL64MSB:
643 case R_IA64_SECREL64MSB:
644 case R_IA64_LTV64MSB:
645 case R_IA64_TPREL64MSB:
646 case R_IA64_DTPMOD64MSB:
647 case R_IA64_DTPREL64MSB:
648 size = 8; bigendian = 1;
651 case R_IA64_DIR64LSB:
652 case R_IA64_GPREL64LSB:
653 case R_IA64_PLTOFF64LSB:
654 case R_IA64_FPTR64LSB:
655 case R_IA64_PCREL64LSB:
656 case R_IA64_LTOFF_FPTR64LSB:
657 case R_IA64_SEGREL64LSB:
658 case R_IA64_SECREL64LSB:
659 case R_IA64_LTV64LSB:
660 case R_IA64_TPREL64LSB:
661 case R_IA64_DTPMOD64LSB:
662 case R_IA64_DTPREL64LSB:
663 size = 8; bigendian = 0;
666 /* Unsupported / Dynamic relocations. */
668 return bfd_reloc_notsupported;
673 case IA64_OPND_IMMU64:
674 hit_addr -= (intptr_t) hit_addr & 0x3;
675 t0 = bfd_getl64 (hit_addr);
676 t1 = bfd_getl64 (hit_addr + 8);
678 /* tmpl/s: bits 0.. 5 in t0
679 slot 0: bits 5..45 in t0
680 slot 1: bits 46..63 in t0, bits 0..22 in t1
681 slot 2: bits 23..63 in t1 */
683 /* First, clear the bits that form the 64 bit constant. */
684 t0 &= ~(0x3ffffLL << 46);
686 | (( (0x07fLL << 13) | (0x1ffLL << 27)
687 | (0x01fLL << 22) | (0x001LL << 21)
688 | (0x001LL << 36)) << 23));
690 t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */
691 t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */
692 t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */
693 | (((val >> 7) & 0x1ff) << 27) /* imm9d */
694 | (((val >> 16) & 0x01f) << 22) /* imm5c */
695 | (((val >> 21) & 0x001) << 21) /* ic */
696 | (((val >> 63) & 0x001) << 36)) << 23; /* i */
698 bfd_putl64 (t0, hit_addr);
699 bfd_putl64 (t1, hit_addr + 8);
702 case IA64_OPND_TGT64:
703 hit_addr -= (intptr_t) hit_addr & 0x3;
704 t0 = bfd_getl64 (hit_addr);
705 t1 = bfd_getl64 (hit_addr + 8);
707 /* tmpl/s: bits 0.. 5 in t0
708 slot 0: bits 5..45 in t0
709 slot 1: bits 46..63 in t0, bits 0..22 in t1
710 slot 2: bits 23..63 in t1 */
712 /* First, clear the bits that form the 64 bit constant. */
713 t0 &= ~(0x3ffffLL << 46);
715 | ((1LL << 36 | 0xfffffLL << 13) << 23));
718 t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */
719 t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */
720 t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */
721 | (((val >> 59) & 0x1LL) << 36)) << 23; /* i */
723 bfd_putl64 (t0, hit_addr);
724 bfd_putl64 (t1, hit_addr + 8);
728 switch ((intptr_t) hit_addr & 0x3)
730 case 0: shift = 5; break;
731 case 1: shift = 14; hit_addr += 3; break;
732 case 2: shift = 23; hit_addr += 6; break;
733 case 3: return bfd_reloc_notsupported; /* shouldn't happen... */
735 dword = bfd_getl64 (hit_addr);
736 insn = (dword >> shift) & 0x1ffffffffffLL;
738 op = elf64_ia64_operands + opnd;
739 err = (*op->insert) (op, val, &insn);
741 return bfd_reloc_overflow;
743 dword &= ~(0x1ffffffffffLL << shift);
744 dword |= (insn << shift);
745 bfd_putl64 (dword, hit_addr);
749 /* A data relocation. */
752 bfd_putb32 (val, hit_addr);
754 bfd_putb64 (val, hit_addr);
757 bfd_putl32 (val, hit_addr);
759 bfd_putl64 (val, hit_addr);