1 /* Motorola 68k series support for 32-bit ELF
2 Copyright (C) 1993-2017 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 3 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
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
27 #include "opcode/m68k.h"
30 elf_m68k_discard_copies (struct elf_link_hash_entry
*, void *);
32 static reloc_howto_type howto_table
[] =
34 HOWTO(R_68K_NONE
, 0, 3, 0, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_NONE", FALSE
, 0, 0x00000000,FALSE
),
35 HOWTO(R_68K_32
, 0, 2,32, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_32", FALSE
, 0, 0xffffffff,FALSE
),
36 HOWTO(R_68K_16
, 0, 1,16, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_16", FALSE
, 0, 0x0000ffff,FALSE
),
37 HOWTO(R_68K_8
, 0, 0, 8, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_8", FALSE
, 0, 0x000000ff,FALSE
),
38 HOWTO(R_68K_PC32
, 0, 2,32, TRUE
, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PC32", FALSE
, 0, 0xffffffff,TRUE
),
39 HOWTO(R_68K_PC16
, 0, 1,16, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PC16", FALSE
, 0, 0x0000ffff,TRUE
),
40 HOWTO(R_68K_PC8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PC8", FALSE
, 0, 0x000000ff,TRUE
),
41 HOWTO(R_68K_GOT32
, 0, 2,32, TRUE
, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_GOT32", FALSE
, 0, 0xffffffff,TRUE
),
42 HOWTO(R_68K_GOT16
, 0, 1,16, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT16", FALSE
, 0, 0x0000ffff,TRUE
),
43 HOWTO(R_68K_GOT8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT8", FALSE
, 0, 0x000000ff,TRUE
),
44 HOWTO(R_68K_GOT32O
, 0, 2,32, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_GOT32O", FALSE
, 0, 0xffffffff,FALSE
),
45 HOWTO(R_68K_GOT16O
, 0, 1,16, FALSE
,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT16O", FALSE
, 0, 0x0000ffff,FALSE
),
46 HOWTO(R_68K_GOT8O
, 0, 0, 8, FALSE
,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT8O", FALSE
, 0, 0x000000ff,FALSE
),
47 HOWTO(R_68K_PLT32
, 0, 2,32, TRUE
, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PLT32", FALSE
, 0, 0xffffffff,TRUE
),
48 HOWTO(R_68K_PLT16
, 0, 1,16, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT16", FALSE
, 0, 0x0000ffff,TRUE
),
49 HOWTO(R_68K_PLT8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT8", FALSE
, 0, 0x000000ff,TRUE
),
50 HOWTO(R_68K_PLT32O
, 0, 2,32, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PLT32O", FALSE
, 0, 0xffffffff,FALSE
),
51 HOWTO(R_68K_PLT16O
, 0, 1,16, FALSE
,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT16O", FALSE
, 0, 0x0000ffff,FALSE
),
52 HOWTO(R_68K_PLT8O
, 0, 0, 8, FALSE
,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT8O", FALSE
, 0, 0x000000ff,FALSE
),
53 HOWTO(R_68K_COPY
, 0, 0, 0, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_COPY", FALSE
, 0, 0xffffffff,FALSE
),
54 HOWTO(R_68K_GLOB_DAT
, 0, 2,32, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_GLOB_DAT", FALSE
, 0, 0xffffffff,FALSE
),
55 HOWTO(R_68K_JMP_SLOT
, 0, 2,32, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_JMP_SLOT", FALSE
, 0, 0xffffffff,FALSE
),
56 HOWTO(R_68K_RELATIVE
, 0, 2,32, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_RELATIVE", FALSE
, 0, 0xffffffff,FALSE
),
57 /* GNU extension to record C++ vtable hierarchy. */
58 HOWTO (R_68K_GNU_VTINHERIT
, /* type */
60 2, /* size (0 = byte, 1 = short, 2 = long) */
62 FALSE
, /* pc_relative */
64 complain_overflow_dont
, /* complain_on_overflow */
65 NULL
, /* special_function */
66 "R_68K_GNU_VTINHERIT", /* name */
67 FALSE
, /* partial_inplace */
71 /* GNU extension to record C++ vtable member usage. */
72 HOWTO (R_68K_GNU_VTENTRY
, /* type */
74 2, /* size (0 = byte, 1 = short, 2 = long) */
76 FALSE
, /* pc_relative */
78 complain_overflow_dont
, /* complain_on_overflow */
79 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
80 "R_68K_GNU_VTENTRY", /* name */
81 FALSE
, /* partial_inplace */
86 /* TLS general dynamic variable reference. */
87 HOWTO (R_68K_TLS_GD32
, /* type */
89 2, /* size (0 = byte, 1 = short, 2 = long) */
91 FALSE
, /* pc_relative */
93 complain_overflow_bitfield
, /* complain_on_overflow */
94 bfd_elf_generic_reloc
, /* special_function */
95 "R_68K_TLS_GD32", /* name */
96 FALSE
, /* partial_inplace */
98 0xffffffff, /* dst_mask */
99 FALSE
), /* pcrel_offset */
101 HOWTO (R_68K_TLS_GD16
, /* type */
103 1, /* size (0 = byte, 1 = short, 2 = long) */
105 FALSE
, /* pc_relative */
107 complain_overflow_signed
, /* complain_on_overflow */
108 bfd_elf_generic_reloc
, /* special_function */
109 "R_68K_TLS_GD16", /* name */
110 FALSE
, /* partial_inplace */
112 0x0000ffff, /* dst_mask */
113 FALSE
), /* pcrel_offset */
115 HOWTO (R_68K_TLS_GD8
, /* type */
117 0, /* size (0 = byte, 1 = short, 2 = long) */
119 FALSE
, /* pc_relative */
121 complain_overflow_signed
, /* complain_on_overflow */
122 bfd_elf_generic_reloc
, /* special_function */
123 "R_68K_TLS_GD8", /* name */
124 FALSE
, /* partial_inplace */
126 0x000000ff, /* dst_mask */
127 FALSE
), /* pcrel_offset */
129 /* TLS local dynamic variable reference. */
130 HOWTO (R_68K_TLS_LDM32
, /* type */
132 2, /* size (0 = byte, 1 = short, 2 = long) */
134 FALSE
, /* pc_relative */
136 complain_overflow_bitfield
, /* complain_on_overflow */
137 bfd_elf_generic_reloc
, /* special_function */
138 "R_68K_TLS_LDM32", /* name */
139 FALSE
, /* partial_inplace */
141 0xffffffff, /* dst_mask */
142 FALSE
), /* pcrel_offset */
144 HOWTO (R_68K_TLS_LDM16
, /* type */
146 1, /* size (0 = byte, 1 = short, 2 = long) */
148 FALSE
, /* pc_relative */
150 complain_overflow_signed
, /* complain_on_overflow */
151 bfd_elf_generic_reloc
, /* special_function */
152 "R_68K_TLS_LDM16", /* name */
153 FALSE
, /* partial_inplace */
155 0x0000ffff, /* dst_mask */
156 FALSE
), /* pcrel_offset */
158 HOWTO (R_68K_TLS_LDM8
, /* type */
160 0, /* size (0 = byte, 1 = short, 2 = long) */
162 FALSE
, /* pc_relative */
164 complain_overflow_signed
, /* complain_on_overflow */
165 bfd_elf_generic_reloc
, /* special_function */
166 "R_68K_TLS_LDM8", /* name */
167 FALSE
, /* partial_inplace */
169 0x000000ff, /* dst_mask */
170 FALSE
), /* pcrel_offset */
172 HOWTO (R_68K_TLS_LDO32
, /* type */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
176 FALSE
, /* pc_relative */
178 complain_overflow_bitfield
, /* complain_on_overflow */
179 bfd_elf_generic_reloc
, /* special_function */
180 "R_68K_TLS_LDO32", /* name */
181 FALSE
, /* partial_inplace */
183 0xffffffff, /* dst_mask */
184 FALSE
), /* pcrel_offset */
186 HOWTO (R_68K_TLS_LDO16
, /* type */
188 1, /* size (0 = byte, 1 = short, 2 = long) */
190 FALSE
, /* pc_relative */
192 complain_overflow_signed
, /* complain_on_overflow */
193 bfd_elf_generic_reloc
, /* special_function */
194 "R_68K_TLS_LDO16", /* name */
195 FALSE
, /* partial_inplace */
197 0x0000ffff, /* dst_mask */
198 FALSE
), /* pcrel_offset */
200 HOWTO (R_68K_TLS_LDO8
, /* type */
202 0, /* size (0 = byte, 1 = short, 2 = long) */
204 FALSE
, /* pc_relative */
206 complain_overflow_signed
, /* complain_on_overflow */
207 bfd_elf_generic_reloc
, /* special_function */
208 "R_68K_TLS_LDO8", /* name */
209 FALSE
, /* partial_inplace */
211 0x000000ff, /* dst_mask */
212 FALSE
), /* pcrel_offset */
214 /* TLS initial execution variable reference. */
215 HOWTO (R_68K_TLS_IE32
, /* type */
217 2, /* size (0 = byte, 1 = short, 2 = long) */
219 FALSE
, /* pc_relative */
221 complain_overflow_bitfield
, /* complain_on_overflow */
222 bfd_elf_generic_reloc
, /* special_function */
223 "R_68K_TLS_IE32", /* name */
224 FALSE
, /* partial_inplace */
226 0xffffffff, /* dst_mask */
227 FALSE
), /* pcrel_offset */
229 HOWTO (R_68K_TLS_IE16
, /* type */
231 1, /* size (0 = byte, 1 = short, 2 = long) */
233 FALSE
, /* pc_relative */
235 complain_overflow_signed
, /* complain_on_overflow */
236 bfd_elf_generic_reloc
, /* special_function */
237 "R_68K_TLS_IE16", /* name */
238 FALSE
, /* partial_inplace */
240 0x0000ffff, /* dst_mask */
241 FALSE
), /* pcrel_offset */
243 HOWTO (R_68K_TLS_IE8
, /* type */
245 0, /* size (0 = byte, 1 = short, 2 = long) */
247 FALSE
, /* pc_relative */
249 complain_overflow_signed
, /* complain_on_overflow */
250 bfd_elf_generic_reloc
, /* special_function */
251 "R_68K_TLS_IE8", /* name */
252 FALSE
, /* partial_inplace */
254 0x000000ff, /* dst_mask */
255 FALSE
), /* pcrel_offset */
257 /* TLS local execution variable reference. */
258 HOWTO (R_68K_TLS_LE32
, /* type */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
262 FALSE
, /* pc_relative */
264 complain_overflow_bitfield
, /* complain_on_overflow */
265 bfd_elf_generic_reloc
, /* special_function */
266 "R_68K_TLS_LE32", /* name */
267 FALSE
, /* partial_inplace */
269 0xffffffff, /* dst_mask */
270 FALSE
), /* pcrel_offset */
272 HOWTO (R_68K_TLS_LE16
, /* type */
274 1, /* size (0 = byte, 1 = short, 2 = long) */
276 FALSE
, /* pc_relative */
278 complain_overflow_signed
, /* complain_on_overflow */
279 bfd_elf_generic_reloc
, /* special_function */
280 "R_68K_TLS_LE16", /* name */
281 FALSE
, /* partial_inplace */
283 0x0000ffff, /* dst_mask */
284 FALSE
), /* pcrel_offset */
286 HOWTO (R_68K_TLS_LE8
, /* type */
288 0, /* size (0 = byte, 1 = short, 2 = long) */
290 FALSE
, /* pc_relative */
292 complain_overflow_signed
, /* complain_on_overflow */
293 bfd_elf_generic_reloc
, /* special_function */
294 "R_68K_TLS_LE8", /* name */
295 FALSE
, /* partial_inplace */
297 0x000000ff, /* dst_mask */
298 FALSE
), /* pcrel_offset */
300 /* TLS GD/LD dynamic relocations. */
301 HOWTO (R_68K_TLS_DTPMOD32
, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE
, /* pc_relative */
307 complain_overflow_dont
, /* complain_on_overflow */
308 bfd_elf_generic_reloc
, /* special_function */
309 "R_68K_TLS_DTPMOD32", /* name */
310 FALSE
, /* partial_inplace */
312 0xffffffff, /* dst_mask */
313 FALSE
), /* pcrel_offset */
315 HOWTO (R_68K_TLS_DTPREL32
, /* type */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
319 FALSE
, /* pc_relative */
321 complain_overflow_dont
, /* complain_on_overflow */
322 bfd_elf_generic_reloc
, /* special_function */
323 "R_68K_TLS_DTPREL32", /* name */
324 FALSE
, /* partial_inplace */
326 0xffffffff, /* dst_mask */
327 FALSE
), /* pcrel_offset */
329 HOWTO (R_68K_TLS_TPREL32
, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE
, /* pc_relative */
335 complain_overflow_dont
, /* complain_on_overflow */
336 bfd_elf_generic_reloc
, /* special_function */
337 "R_68K_TLS_TPREL32", /* name */
338 FALSE
, /* partial_inplace */
340 0xffffffff, /* dst_mask */
341 FALSE
), /* pcrel_offset */
345 rtype_to_howto (bfd
*abfd
, arelent
*cache_ptr
, Elf_Internal_Rela
*dst
)
347 unsigned int indx
= ELF32_R_TYPE (dst
->r_info
);
349 if (indx
>= (unsigned int) R_68K_max
)
351 /* xgettext:c-format */
352 _bfd_error_handler (_("%B: invalid relocation type %d"),
356 cache_ptr
->howto
= &howto_table
[indx
];
359 #define elf_info_to_howto rtype_to_howto
363 bfd_reloc_code_real_type bfd_val
;
368 { BFD_RELOC_NONE
, R_68K_NONE
},
369 { BFD_RELOC_32
, R_68K_32
},
370 { BFD_RELOC_16
, R_68K_16
},
371 { BFD_RELOC_8
, R_68K_8
},
372 { BFD_RELOC_32_PCREL
, R_68K_PC32
},
373 { BFD_RELOC_16_PCREL
, R_68K_PC16
},
374 { BFD_RELOC_8_PCREL
, R_68K_PC8
},
375 { BFD_RELOC_32_GOT_PCREL
, R_68K_GOT32
},
376 { BFD_RELOC_16_GOT_PCREL
, R_68K_GOT16
},
377 { BFD_RELOC_8_GOT_PCREL
, R_68K_GOT8
},
378 { BFD_RELOC_32_GOTOFF
, R_68K_GOT32O
},
379 { BFD_RELOC_16_GOTOFF
, R_68K_GOT16O
},
380 { BFD_RELOC_8_GOTOFF
, R_68K_GOT8O
},
381 { BFD_RELOC_32_PLT_PCREL
, R_68K_PLT32
},
382 { BFD_RELOC_16_PLT_PCREL
, R_68K_PLT16
},
383 { BFD_RELOC_8_PLT_PCREL
, R_68K_PLT8
},
384 { BFD_RELOC_32_PLTOFF
, R_68K_PLT32O
},
385 { BFD_RELOC_16_PLTOFF
, R_68K_PLT16O
},
386 { BFD_RELOC_8_PLTOFF
, R_68K_PLT8O
},
387 { BFD_RELOC_NONE
, R_68K_COPY
},
388 { BFD_RELOC_68K_GLOB_DAT
, R_68K_GLOB_DAT
},
389 { BFD_RELOC_68K_JMP_SLOT
, R_68K_JMP_SLOT
},
390 { BFD_RELOC_68K_RELATIVE
, R_68K_RELATIVE
},
391 { BFD_RELOC_CTOR
, R_68K_32
},
392 { BFD_RELOC_VTABLE_INHERIT
, R_68K_GNU_VTINHERIT
},
393 { BFD_RELOC_VTABLE_ENTRY
, R_68K_GNU_VTENTRY
},
394 { BFD_RELOC_68K_TLS_GD32
, R_68K_TLS_GD32
},
395 { BFD_RELOC_68K_TLS_GD16
, R_68K_TLS_GD16
},
396 { BFD_RELOC_68K_TLS_GD8
, R_68K_TLS_GD8
},
397 { BFD_RELOC_68K_TLS_LDM32
, R_68K_TLS_LDM32
},
398 { BFD_RELOC_68K_TLS_LDM16
, R_68K_TLS_LDM16
},
399 { BFD_RELOC_68K_TLS_LDM8
, R_68K_TLS_LDM8
},
400 { BFD_RELOC_68K_TLS_LDO32
, R_68K_TLS_LDO32
},
401 { BFD_RELOC_68K_TLS_LDO16
, R_68K_TLS_LDO16
},
402 { BFD_RELOC_68K_TLS_LDO8
, R_68K_TLS_LDO8
},
403 { BFD_RELOC_68K_TLS_IE32
, R_68K_TLS_IE32
},
404 { BFD_RELOC_68K_TLS_IE16
, R_68K_TLS_IE16
},
405 { BFD_RELOC_68K_TLS_IE8
, R_68K_TLS_IE8
},
406 { BFD_RELOC_68K_TLS_LE32
, R_68K_TLS_LE32
},
407 { BFD_RELOC_68K_TLS_LE16
, R_68K_TLS_LE16
},
408 { BFD_RELOC_68K_TLS_LE8
, R_68K_TLS_LE8
},
411 static reloc_howto_type
*
412 reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
413 bfd_reloc_code_real_type code
)
416 for (i
= 0; i
< sizeof (reloc_map
) / sizeof (reloc_map
[0]); i
++)
418 if (reloc_map
[i
].bfd_val
== code
)
419 return &howto_table
[reloc_map
[i
].elf_val
];
424 static reloc_howto_type
*
425 reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
, const char *r_name
)
429 for (i
= 0; i
< sizeof (howto_table
) / sizeof (howto_table
[0]); i
++)
430 if (howto_table
[i
].name
!= NULL
431 && strcasecmp (howto_table
[i
].name
, r_name
) == 0)
432 return &howto_table
[i
];
437 #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
438 #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup
439 #define ELF_ARCH bfd_arch_m68k
440 #define ELF_TARGET_ID M68K_ELF_DATA
442 /* Functions for the m68k ELF linker. */
444 /* The name of the dynamic interpreter. This is put in the .interp
447 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
449 /* Describes one of the various PLT styles. */
451 struct elf_m68k_plt_info
453 /* The size of each PLT entry. */
456 /* The template for the first PLT entry. */
457 const bfd_byte
*plt0_entry
;
459 /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations.
460 The comments by each member indicate the value that the relocation
463 unsigned int got4
; /* .got + 4 */
464 unsigned int got8
; /* .got + 8 */
467 /* The template for a symbol's PLT entry. */
468 const bfd_byte
*symbol_entry
;
470 /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations.
471 The comments by each member indicate the value that the relocation
474 unsigned int got
; /* the symbol's .got.plt entry */
475 unsigned int plt
; /* .plt */
478 /* The offset of the resolver stub from the start of SYMBOL_ENTRY.
479 The stub starts with "move.l #relocoffset,%d0". */
480 bfd_vma symbol_resolve_entry
;
483 /* The size in bytes of an entry in the procedure linkage table. */
485 #define PLT_ENTRY_SIZE 20
487 /* The first entry in a procedure linkage table looks like this. See
488 the SVR4 ABI m68k supplement to see how this works. */
490 static const bfd_byte elf_m68k_plt0_entry
[PLT_ENTRY_SIZE
] =
492 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
493 0, 0, 0, 2, /* + (.got + 4) - . */
494 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
495 0, 0, 0, 2, /* + (.got + 8) - . */
496 0, 0, 0, 0 /* pad out to 20 bytes. */
499 /* Subsequent entries in a procedure linkage table look like this. */
501 static const bfd_byte elf_m68k_plt_entry
[PLT_ENTRY_SIZE
] =
503 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */
504 0, 0, 0, 2, /* + (.got.plt entry) - . */
505 0x2f, 0x3c, /* move.l #offset,-(%sp) */
506 0, 0, 0, 0, /* + reloc index */
507 0x60, 0xff, /* bra.l .plt */
508 0, 0, 0, 0 /* + .plt - . */
511 static const struct elf_m68k_plt_info elf_m68k_plt_info
=
514 elf_m68k_plt0_entry
, { 4, 12 },
515 elf_m68k_plt_entry
, { 4, 16 }, 8
518 #define ISAB_PLT_ENTRY_SIZE 24
520 static const bfd_byte elf_isab_plt0_entry
[ISAB_PLT_ENTRY_SIZE
] =
522 0x20, 0x3c, /* move.l #offset,%d0 */
523 0, 0, 0, 0, /* + (.got + 4) - . */
524 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */
525 0x20, 0x3c, /* move.l #offset,%d0 */
526 0, 0, 0, 0, /* + (.got + 8) - . */
527 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
528 0x4e, 0xd0, /* jmp (%a0) */
532 /* Subsequent entries in a procedure linkage table look like this. */
534 static const bfd_byte elf_isab_plt_entry
[ISAB_PLT_ENTRY_SIZE
] =
536 0x20, 0x3c, /* move.l #offset,%d0 */
537 0, 0, 0, 0, /* + (.got.plt entry) - . */
538 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
539 0x4e, 0xd0, /* jmp (%a0) */
540 0x2f, 0x3c, /* move.l #offset,-(%sp) */
541 0, 0, 0, 0, /* + reloc index */
542 0x60, 0xff, /* bra.l .plt */
543 0, 0, 0, 0 /* + .plt - . */
546 static const struct elf_m68k_plt_info elf_isab_plt_info
=
549 elf_isab_plt0_entry
, { 2, 12 },
550 elf_isab_plt_entry
, { 2, 20 }, 12
553 #define ISAC_PLT_ENTRY_SIZE 24
555 static const bfd_byte elf_isac_plt0_entry
[ISAC_PLT_ENTRY_SIZE
] =
557 0x20, 0x3c, /* move.l #offset,%d0 */
558 0, 0, 0, 0, /* replaced with .got + 4 - . */
559 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */
560 0x20, 0x3c, /* move.l #offset,%d0 */
561 0, 0, 0, 0, /* replaced with .got + 8 - . */
562 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
563 0x4e, 0xd0, /* jmp (%a0) */
567 /* Subsequent entries in a procedure linkage table look like this. */
569 static const bfd_byte elf_isac_plt_entry
[ISAC_PLT_ENTRY_SIZE
] =
571 0x20, 0x3c, /* move.l #offset,%d0 */
572 0, 0, 0, 0, /* replaced with (.got entry) - . */
573 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
574 0x4e, 0xd0, /* jmp (%a0) */
575 0x2f, 0x3c, /* move.l #offset,-(%sp) */
576 0, 0, 0, 0, /* replaced with offset into relocation table */
577 0x61, 0xff, /* bsr.l .plt */
578 0, 0, 0, 0 /* replaced with .plt - . */
581 static const struct elf_m68k_plt_info elf_isac_plt_info
=
584 elf_isac_plt0_entry
, { 2, 12},
585 elf_isac_plt_entry
, { 2, 20 }, 12
588 #define CPU32_PLT_ENTRY_SIZE 24
589 /* Procedure linkage table entries for the cpu32 */
590 static const bfd_byte elf_cpu32_plt0_entry
[CPU32_PLT_ENTRY_SIZE
] =
592 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
593 0, 0, 0, 2, /* + (.got + 4) - . */
594 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
595 0, 0, 0, 2, /* + (.got + 8) - . */
596 0x4e, 0xd1, /* jmp %a1@ */
597 0, 0, 0, 0, /* pad out to 24 bytes. */
601 static const bfd_byte elf_cpu32_plt_entry
[CPU32_PLT_ENTRY_SIZE
] =
603 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
604 0, 0, 0, 2, /* + (.got.plt entry) - . */
605 0x4e, 0xd1, /* jmp %a1@ */
606 0x2f, 0x3c, /* move.l #offset,-(%sp) */
607 0, 0, 0, 0, /* + reloc index */
608 0x60, 0xff, /* bra.l .plt */
609 0, 0, 0, 0, /* + .plt - . */
613 static const struct elf_m68k_plt_info elf_cpu32_plt_info
=
615 CPU32_PLT_ENTRY_SIZE
,
616 elf_cpu32_plt0_entry
, { 4, 12 },
617 elf_cpu32_plt_entry
, { 4, 18 }, 10
620 /* The m68k linker needs to keep track of the number of relocs that it
621 decides to copy in check_relocs for each symbol. This is so that it
622 can discard PC relative relocs if it doesn't need them when linking
623 with -Bsymbolic. We store the information in a field extending the
624 regular ELF linker hash table. */
626 /* This structure keeps track of the number of PC relative relocs we have
627 copied for a given symbol. */
629 struct elf_m68k_pcrel_relocs_copied
632 struct elf_m68k_pcrel_relocs_copied
*next
;
633 /* A section in dynobj. */
635 /* Number of relocs copied in this section. */
639 /* Forward declaration. */
640 struct elf_m68k_got_entry
;
642 /* m68k ELF linker hash entry. */
644 struct elf_m68k_link_hash_entry
646 struct elf_link_hash_entry root
;
648 /* Number of PC relative relocs copied for this symbol. */
649 struct elf_m68k_pcrel_relocs_copied
*pcrel_relocs_copied
;
651 /* Key to got_entries. */
652 unsigned long got_entry_key
;
654 /* List of GOT entries for this symbol. This list is build during
655 offset finalization and is used within elf_m68k_finish_dynamic_symbol
656 to traverse all GOT entries for a particular symbol.
658 ??? We could've used root.got.glist field instead, but having
659 a separate field is cleaner. */
660 struct elf_m68k_got_entry
*glist
;
663 #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent))
665 /* Key part of GOT entry in hashtable. */
666 struct elf_m68k_got_entry_key
668 /* BFD in which this symbol was defined. NULL for global symbols. */
671 /* Symbol index. Either local symbol index or h->got_entry_key. */
672 unsigned long symndx
;
674 /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32},
675 R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}.
677 From perspective of hashtable key, only elf_m68k_got_reloc_type (type)
678 matters. That is, we distinguish between, say, R_68K_GOT16O
679 and R_68K_GOT32O when allocating offsets, but they are considered to be
680 the same when searching got->entries. */
681 enum elf_m68k_reloc_type type
;
684 /* Size of the GOT offset suitable for relocation. */
685 enum elf_m68k_got_offset_size
{ R_8
, R_16
, R_32
, R_LAST
};
687 /* Entry of the GOT. */
688 struct elf_m68k_got_entry
690 /* GOT entries are put into a got->entries hashtable. This is the key. */
691 struct elf_m68k_got_entry_key key_
;
693 /* GOT entry data. We need s1 before offset finalization and s2 after. */
698 /* Number of times this entry is referenced. */
704 /* Offset from the start of .got section. To calculate offset relative
705 to GOT pointer one should subtract got->offset from this value. */
708 /* Pointer to the next GOT entry for this global symbol.
709 Symbols have at most one entry in one GOT, but might
710 have entries in more than one GOT.
711 Root of this list is h->glist.
712 NULL for local symbols. */
713 struct elf_m68k_got_entry
*next
;
718 /* Return representative type for relocation R_TYPE.
719 This is used to avoid enumerating many relocations in comparisons,
722 static enum elf_m68k_reloc_type
723 elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type
)
727 /* In most cases R_68K_GOTx relocations require the very same
728 handling as R_68K_GOT32O relocation. In cases when we need
729 to distinguish between the two, we use explicitly compare against
742 return R_68K_TLS_GD32
;
744 case R_68K_TLS_LDM32
:
745 case R_68K_TLS_LDM16
:
747 return R_68K_TLS_LDM32
;
752 return R_68K_TLS_IE32
;
760 /* Return size of the GOT entry offset for relocation R_TYPE. */
762 static enum elf_m68k_got_offset_size
763 elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type
)
767 case R_68K_GOT32
: case R_68K_GOT16
: case R_68K_GOT8
:
768 case R_68K_GOT32O
: case R_68K_TLS_GD32
: case R_68K_TLS_LDM32
:
772 case R_68K_GOT16O
: case R_68K_TLS_GD16
: case R_68K_TLS_LDM16
:
776 case R_68K_GOT8O
: case R_68K_TLS_GD8
: case R_68K_TLS_LDM8
:
786 /* Return number of GOT entries we need to allocate in GOT for
787 relocation R_TYPE. */
790 elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type
)
792 switch (elf_m68k_reloc_got_type (r_type
))
799 case R_68K_TLS_LDM32
:
808 /* Return TRUE if relocation R_TYPE is a TLS one. */
811 elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type
)
815 case R_68K_TLS_GD32
: case R_68K_TLS_GD16
: case R_68K_TLS_GD8
:
816 case R_68K_TLS_LDM32
: case R_68K_TLS_LDM16
: case R_68K_TLS_LDM8
:
817 case R_68K_TLS_LDO32
: case R_68K_TLS_LDO16
: case R_68K_TLS_LDO8
:
818 case R_68K_TLS_IE32
: case R_68K_TLS_IE16
: case R_68K_TLS_IE8
:
819 case R_68K_TLS_LE32
: case R_68K_TLS_LE16
: case R_68K_TLS_LE8
:
820 case R_68K_TLS_DTPMOD32
: case R_68K_TLS_DTPREL32
: case R_68K_TLS_TPREL32
:
828 /* Data structure representing a single GOT. */
831 /* Hashtable of 'struct elf_m68k_got_entry's.
832 Starting size of this table is the maximum number of
833 R_68K_GOT8O entries. */
836 /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require
839 n_slots[R_8] is the count of R_8 slots in this GOT.
840 n_slots[R_16] is the cumulative count of R_8 and R_16 slots
842 n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots
843 in this GOT. This is the total number of slots. */
844 bfd_vma n_slots
[R_LAST
];
846 /* Number of local (entry->key_.h == NULL) slots in this GOT.
847 This is only used to properly calculate size of .rela.got section;
848 see elf_m68k_partition_multi_got. */
849 bfd_vma local_n_slots
;
851 /* Offset of this GOT relative to beginning of .got section. */
855 /* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */
856 struct elf_m68k_bfd2got_entry
861 /* Assigned GOT. Before partitioning multi-GOT each BFD has its own
862 GOT structure. After partitioning several BFD's might [and often do]
863 share a single GOT. */
864 struct elf_m68k_got
*got
;
867 /* The main data structure holding all the pieces. */
868 struct elf_m68k_multi_got
870 /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry
871 here, then it doesn't need a GOT (this includes the case of a BFD
872 having an empty GOT).
874 ??? This hashtable can be replaced by an array indexed by bfd->id. */
877 /* Next symndx to assign a global symbol.
878 h->got_entry_key is initialized from this counter. */
879 unsigned long global_symndx
;
882 /* m68k ELF linker hash table. */
884 struct elf_m68k_link_hash_table
886 struct elf_link_hash_table root
;
888 /* Small local sym cache. */
889 struct sym_cache sym_cache
;
891 /* The PLT format used by this link, or NULL if the format has not
893 const struct elf_m68k_plt_info
*plt_info
;
895 /* True, if GP is loaded within each function which uses it.
896 Set to TRUE when GOT negative offsets or multi-GOT is enabled. */
897 bfd_boolean local_gp_p
;
899 /* Switch controlling use of negative offsets to double the size of GOTs. */
900 bfd_boolean use_neg_got_offsets_p
;
902 /* Switch controlling generation of multiple GOTs. */
903 bfd_boolean allow_multigot_p
;
905 /* Multi-GOT data structure. */
906 struct elf_m68k_multi_got multi_got_
;
909 /* Get the m68k ELF linker hash table from a link_info structure. */
911 #define elf_m68k_hash_table(p) \
912 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
913 == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL)
915 /* Shortcut to multi-GOT data. */
916 #define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_)
918 /* Create an entry in an m68k ELF linker hash table. */
920 static struct bfd_hash_entry
*
921 elf_m68k_link_hash_newfunc (struct bfd_hash_entry
*entry
,
922 struct bfd_hash_table
*table
,
925 struct bfd_hash_entry
*ret
= entry
;
927 /* Allocate the structure if it has not already been allocated by a
930 ret
= bfd_hash_allocate (table
,
931 sizeof (struct elf_m68k_link_hash_entry
));
935 /* Call the allocation method of the superclass. */
936 ret
= _bfd_elf_link_hash_newfunc (ret
, table
, string
);
939 elf_m68k_hash_entry (ret
)->pcrel_relocs_copied
= NULL
;
940 elf_m68k_hash_entry (ret
)->got_entry_key
= 0;
941 elf_m68k_hash_entry (ret
)->glist
= NULL
;
947 /* Destroy an m68k ELF linker hash table. */
950 elf_m68k_link_hash_table_free (bfd
*obfd
)
952 struct elf_m68k_link_hash_table
*htab
;
954 htab
= (struct elf_m68k_link_hash_table
*) obfd
->link
.hash
;
956 if (htab
->multi_got_
.bfd2got
!= NULL
)
958 htab_delete (htab
->multi_got_
.bfd2got
);
959 htab
->multi_got_
.bfd2got
= NULL
;
961 _bfd_elf_link_hash_table_free (obfd
);
964 /* Create an m68k ELF linker hash table. */
966 static struct bfd_link_hash_table
*
967 elf_m68k_link_hash_table_create (bfd
*abfd
)
969 struct elf_m68k_link_hash_table
*ret
;
970 bfd_size_type amt
= sizeof (struct elf_m68k_link_hash_table
);
972 ret
= (struct elf_m68k_link_hash_table
*) bfd_zmalloc (amt
);
973 if (ret
== (struct elf_m68k_link_hash_table
*) NULL
)
976 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
977 elf_m68k_link_hash_newfunc
,
978 sizeof (struct elf_m68k_link_hash_entry
),
984 ret
->root
.root
.hash_table_free
= elf_m68k_link_hash_table_free
;
986 ret
->multi_got_
.global_symndx
= 1;
988 return &ret
->root
.root
;
991 /* Set the right machine number. */
994 elf32_m68k_object_p (bfd
*abfd
)
996 unsigned int mach
= 0;
997 unsigned features
= 0;
998 flagword eflags
= elf_elfheader (abfd
)->e_flags
;
1000 if ((eflags
& EF_M68K_ARCH_MASK
) == EF_M68K_M68000
)
1002 else if ((eflags
& EF_M68K_ARCH_MASK
) == EF_M68K_CPU32
)
1004 else if ((eflags
& EF_M68K_ARCH_MASK
) == EF_M68K_FIDO
)
1008 switch (eflags
& EF_M68K_CF_ISA_MASK
)
1010 case EF_M68K_CF_ISA_A_NODIV
:
1011 features
|= mcfisa_a
;
1013 case EF_M68K_CF_ISA_A
:
1014 features
|= mcfisa_a
|mcfhwdiv
;
1016 case EF_M68K_CF_ISA_A_PLUS
:
1017 features
|= mcfisa_a
|mcfisa_aa
|mcfhwdiv
|mcfusp
;
1019 case EF_M68K_CF_ISA_B_NOUSP
:
1020 features
|= mcfisa_a
|mcfisa_b
|mcfhwdiv
;
1022 case EF_M68K_CF_ISA_B
:
1023 features
|= mcfisa_a
|mcfisa_b
|mcfhwdiv
|mcfusp
;
1025 case EF_M68K_CF_ISA_C
:
1026 features
|= mcfisa_a
|mcfisa_c
|mcfhwdiv
|mcfusp
;
1028 case EF_M68K_CF_ISA_C_NODIV
:
1029 features
|= mcfisa_a
|mcfisa_c
|mcfusp
;
1032 switch (eflags
& EF_M68K_CF_MAC_MASK
)
1034 case EF_M68K_CF_MAC
:
1037 case EF_M68K_CF_EMAC
:
1038 features
|= mcfemac
;
1041 if (eflags
& EF_M68K_CF_FLOAT
)
1045 mach
= bfd_m68k_features_to_mach (features
);
1046 bfd_default_set_arch_mach (abfd
, bfd_arch_m68k
, mach
);
1051 /* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag
1052 field based on the machine number. */
1055 elf_m68k_final_write_processing (bfd
*abfd
,
1056 bfd_boolean linker ATTRIBUTE_UNUSED
)
1058 int mach
= bfd_get_mach (abfd
);
1059 unsigned long e_flags
= elf_elfheader (abfd
)->e_flags
;
1063 unsigned int arch_mask
;
1065 arch_mask
= bfd_m68k_mach_to_features (mach
);
1067 if (arch_mask
& m68000
)
1068 e_flags
= EF_M68K_M68000
;
1069 else if (arch_mask
& cpu32
)
1070 e_flags
= EF_M68K_CPU32
;
1071 else if (arch_mask
& fido_a
)
1072 e_flags
= EF_M68K_FIDO
;
1076 & (mcfisa_a
| mcfisa_aa
| mcfisa_b
| mcfisa_c
| mcfhwdiv
| mcfusp
))
1079 e_flags
|= EF_M68K_CF_ISA_A_NODIV
;
1081 case mcfisa_a
| mcfhwdiv
:
1082 e_flags
|= EF_M68K_CF_ISA_A
;
1084 case mcfisa_a
| mcfisa_aa
| mcfhwdiv
| mcfusp
:
1085 e_flags
|= EF_M68K_CF_ISA_A_PLUS
;
1087 case mcfisa_a
| mcfisa_b
| mcfhwdiv
:
1088 e_flags
|= EF_M68K_CF_ISA_B_NOUSP
;
1090 case mcfisa_a
| mcfisa_b
| mcfhwdiv
| mcfusp
:
1091 e_flags
|= EF_M68K_CF_ISA_B
;
1093 case mcfisa_a
| mcfisa_c
| mcfhwdiv
| mcfusp
:
1094 e_flags
|= EF_M68K_CF_ISA_C
;
1096 case mcfisa_a
| mcfisa_c
| mcfusp
:
1097 e_flags
|= EF_M68K_CF_ISA_C_NODIV
;
1100 if (arch_mask
& mcfmac
)
1101 e_flags
|= EF_M68K_CF_MAC
;
1102 else if (arch_mask
& mcfemac
)
1103 e_flags
|= EF_M68K_CF_EMAC
;
1104 if (arch_mask
& cfloat
)
1105 e_flags
|= EF_M68K_CF_FLOAT
| EF_M68K_CFV4E
;
1107 elf_elfheader (abfd
)->e_flags
= e_flags
;
1111 /* Keep m68k-specific flags in the ELF header. */
1114 elf32_m68k_set_private_flags (bfd
*abfd
, flagword flags
)
1116 elf_elfheader (abfd
)->e_flags
= flags
;
1117 elf_flags_init (abfd
) = TRUE
;
1121 /* Merge backend specific data from an object file to the output
1122 object file when linking. */
1124 elf32_m68k_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
1126 bfd
*obfd
= info
->output_bfd
;
1131 const bfd_arch_info_type
*arch_info
;
1133 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
1134 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
1137 /* Get the merged machine. This checks for incompatibility between
1138 Coldfire & non-Coldfire flags, incompability between different
1139 Coldfire ISAs, and incompability between different MAC types. */
1140 arch_info
= bfd_arch_get_compatible (ibfd
, obfd
, FALSE
);
1144 bfd_set_arch_mach (obfd
, bfd_arch_m68k
, arch_info
->mach
);
1146 in_flags
= elf_elfheader (ibfd
)->e_flags
;
1147 if (!elf_flags_init (obfd
))
1149 elf_flags_init (obfd
) = TRUE
;
1150 out_flags
= in_flags
;
1154 out_flags
= elf_elfheader (obfd
)->e_flags
;
1155 unsigned int variant_mask
;
1157 if ((in_flags
& EF_M68K_ARCH_MASK
) == EF_M68K_M68000
)
1159 else if ((in_flags
& EF_M68K_ARCH_MASK
) == EF_M68K_CPU32
)
1161 else if ((in_flags
& EF_M68K_ARCH_MASK
) == EF_M68K_FIDO
)
1164 variant_mask
= EF_M68K_CF_ISA_MASK
;
1166 in_isa
= (in_flags
& variant_mask
);
1167 out_isa
= (out_flags
& variant_mask
);
1168 if (in_isa
> out_isa
)
1169 out_flags
^= in_isa
^ out_isa
;
1170 if (((in_flags
& EF_M68K_ARCH_MASK
) == EF_M68K_CPU32
1171 && (out_flags
& EF_M68K_ARCH_MASK
) == EF_M68K_FIDO
)
1172 || ((in_flags
& EF_M68K_ARCH_MASK
) == EF_M68K_FIDO
1173 && (out_flags
& EF_M68K_ARCH_MASK
) == EF_M68K_CPU32
))
1174 out_flags
= EF_M68K_FIDO
;
1176 out_flags
|= in_flags
^ in_isa
;
1178 elf_elfheader (obfd
)->e_flags
= out_flags
;
1183 /* Display the flags field. */
1186 elf32_m68k_print_private_bfd_data (bfd
*abfd
, void * ptr
)
1188 FILE *file
= (FILE *) ptr
;
1189 flagword eflags
= elf_elfheader (abfd
)->e_flags
;
1191 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
1193 /* Print normal ELF private data. */
1194 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
1196 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
1198 /* xgettext:c-format */
1199 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
1201 if ((eflags
& EF_M68K_ARCH_MASK
) == EF_M68K_M68000
)
1202 fprintf (file
, " [m68000]");
1203 else if ((eflags
& EF_M68K_ARCH_MASK
) == EF_M68K_CPU32
)
1204 fprintf (file
, " [cpu32]");
1205 else if ((eflags
& EF_M68K_ARCH_MASK
) == EF_M68K_FIDO
)
1206 fprintf (file
, " [fido]");
1209 if ((eflags
& EF_M68K_ARCH_MASK
) == EF_M68K_CFV4E
)
1210 fprintf (file
, " [cfv4e]");
1212 if (eflags
& EF_M68K_CF_ISA_MASK
)
1214 char const *isa
= _("unknown");
1215 char const *mac
= _("unknown");
1216 char const *additional
= "";
1218 switch (eflags
& EF_M68K_CF_ISA_MASK
)
1220 case EF_M68K_CF_ISA_A_NODIV
:
1222 additional
= " [nodiv]";
1224 case EF_M68K_CF_ISA_A
:
1227 case EF_M68K_CF_ISA_A_PLUS
:
1230 case EF_M68K_CF_ISA_B_NOUSP
:
1232 additional
= " [nousp]";
1234 case EF_M68K_CF_ISA_B
:
1237 case EF_M68K_CF_ISA_C
:
1240 case EF_M68K_CF_ISA_C_NODIV
:
1242 additional
= " [nodiv]";
1245 fprintf (file
, " [isa %s]%s", isa
, additional
);
1247 if (eflags
& EF_M68K_CF_FLOAT
)
1248 fprintf (file
, " [float]");
1250 switch (eflags
& EF_M68K_CF_MAC_MASK
)
1255 case EF_M68K_CF_MAC
:
1258 case EF_M68K_CF_EMAC
:
1261 case EF_M68K_CF_EMAC_B
:
1266 fprintf (file
, " [%s]", mac
);
1275 /* Multi-GOT support implementation design:
1277 Multi-GOT starts in check_relocs hook. There we scan all
1278 relocations of a BFD and build a local GOT (struct elf_m68k_got)
1279 for it. If a single BFD appears to require too many GOT slots with
1280 R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification
1282 After check_relocs has been invoked for each input BFD, we have
1283 constructed a GOT for each input BFD.
1285 To minimize total number of GOTs required for a particular output BFD
1286 (as some environments support only 1 GOT per output object) we try
1287 to merge some of the GOTs to share an offset space. Ideally [and in most
1288 cases] we end up with a single GOT. In cases when there are too many
1289 restricted relocations (e.g., R_68K_GOT16O relocations) we end up with
1290 several GOTs, assuming the environment can handle them.
1292 Partitioning is done in elf_m68k_partition_multi_got. We start with
1293 an empty GOT and traverse bfd2got hashtable putting got_entries from
1294 local GOTs to the new 'big' one. We do that by constructing an
1295 intermediate GOT holding all the entries the local GOT has and the big
1296 GOT lacks. Then we check if there is room in the big GOT to accomodate
1297 all the entries from diff. On success we add those entries to the big
1298 GOT; on failure we start the new 'big' GOT and retry the adding of
1299 entries from the local GOT. Note that this retry will always succeed as
1300 each local GOT doesn't overflow the limits. After partitioning we
1301 end up with each bfd assigned one of the big GOTs. GOT entries in the
1302 big GOTs are initialized with GOT offsets. Note that big GOTs are
1303 positioned consequently in program space and represent a single huge GOT
1304 to the outside world.
1306 After that we get to elf_m68k_relocate_section. There we
1307 adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol
1308 relocations to refer to appropriate [assigned to current input_bfd]
1313 GOT entry type: We have several types of GOT entries.
1314 * R_8 type is used in entries for symbols that have at least one
1315 R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40
1316 such entries in one GOT.
1317 * R_16 type is used in entries for symbols that have at least one
1318 R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations.
1319 We can have at most 0x4000 such entries in one GOT.
1320 * R_32 type is used in all other cases. We can have as many
1321 such entries in one GOT as we'd like.
1322 When counting relocations we have to include the count of the smaller
1323 ranged relocations in the counts of the larger ranged ones in order
1324 to correctly detect overflow.
1326 Sorting the GOT: In each GOT starting offsets are assigned to
1327 R_8 entries, which are followed by R_16 entries, and
1328 R_32 entries go at the end. See finalize_got_offsets for details.
1330 Negative GOT offsets: To double usable offset range of GOTs we use
1331 negative offsets. As we assign entries with GOT offsets relative to
1332 start of .got section, the offset values are positive. They become
1333 negative only in relocate_section where got->offset value is
1334 subtracted from them.
1336 3 special GOT entries: There are 3 special GOT entries used internally
1337 by loader. These entries happen to be placed to .got.plt section,
1338 so we don't do anything about them in multi-GOT support.
1340 Memory management: All data except for hashtables
1341 multi_got->bfd2got and got->entries are allocated on
1342 elf_hash_table (info)->dynobj bfd (for this reason we pass 'info'
1343 to most functions), so we don't need to care to free them. At the
1344 moment of allocation hashtables are being linked into main data
1345 structure (multi_got), all pieces of which are reachable from
1346 elf_m68k_multi_got (info). We deallocate them in
1347 elf_m68k_link_hash_table_free. */
1349 /* Initialize GOT. */
1352 elf_m68k_init_got (struct elf_m68k_got
*got
)
1354 got
->entries
= NULL
;
1355 got
->n_slots
[R_8
] = 0;
1356 got
->n_slots
[R_16
] = 0;
1357 got
->n_slots
[R_32
] = 0;
1358 got
->local_n_slots
= 0;
1359 got
->offset
= (bfd_vma
) -1;
1365 elf_m68k_clear_got (struct elf_m68k_got
*got
)
1367 if (got
->entries
!= NULL
)
1369 htab_delete (got
->entries
);
1370 got
->entries
= NULL
;
1374 /* Create and empty GOT structure. INFO is the context where memory
1375 should be allocated. */
1377 static struct elf_m68k_got
*
1378 elf_m68k_create_empty_got (struct bfd_link_info
*info
)
1380 struct elf_m68k_got
*got
;
1382 got
= bfd_alloc (elf_hash_table (info
)->dynobj
, sizeof (*got
));
1386 elf_m68k_init_got (got
);
1391 /* Initialize KEY. */
1394 elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key
*key
,
1395 struct elf_link_hash_entry
*h
,
1396 const bfd
*abfd
, unsigned long symndx
,
1397 enum elf_m68k_reloc_type reloc_type
)
1399 if (elf_m68k_reloc_got_type (reloc_type
) == R_68K_TLS_LDM32
)
1400 /* All TLS_LDM relocations share a single GOT entry. */
1406 /* Global symbols are identified with their got_entry_key. */
1409 key
->symndx
= elf_m68k_hash_entry (h
)->got_entry_key
;
1410 BFD_ASSERT (key
->symndx
!= 0);
1413 /* Local symbols are identified by BFD they appear in and symndx. */
1416 key
->symndx
= symndx
;
1419 key
->type
= reloc_type
;
1422 /* Calculate hash of got_entry.
1426 elf_m68k_got_entry_hash (const void *_entry
)
1428 const struct elf_m68k_got_entry_key
*key
;
1430 key
= &((const struct elf_m68k_got_entry
*) _entry
)->key_
;
1433 + (key
->bfd
!= NULL
? (int) key
->bfd
->id
: -1)
1434 + elf_m68k_reloc_got_type (key
->type
));
1437 /* Check if two got entries are equal. */
1440 elf_m68k_got_entry_eq (const void *_entry1
, const void *_entry2
)
1442 const struct elf_m68k_got_entry_key
*key1
;
1443 const struct elf_m68k_got_entry_key
*key2
;
1445 key1
= &((const struct elf_m68k_got_entry
*) _entry1
)->key_
;
1446 key2
= &((const struct elf_m68k_got_entry
*) _entry2
)->key_
;
1448 return (key1
->bfd
== key2
->bfd
1449 && key1
->symndx
== key2
->symndx
1450 && (elf_m68k_reloc_got_type (key1
->type
)
1451 == elf_m68k_reloc_got_type (key2
->type
)));
1454 /* When using negative offsets, we allocate one extra R_8, one extra R_16
1455 and one extra R_32 slots to simplify handling of 2-slot entries during
1456 offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */
1458 /* Maximal number of R_8 slots in a single GOT. */
1459 #define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \
1460 (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
1464 /* Maximal number of R_8 and R_16 slots in a single GOT. */
1465 #define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \
1466 (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
1470 /* SEARCH - simply search the hashtable, don't insert new entries or fail when
1471 the entry cannot be found.
1472 FIND_OR_CREATE - search for an existing entry, but create new if there's
1474 MUST_FIND - search for an existing entry and assert that it exist.
1475 MUST_CREATE - assert that there's no such entry and create new one. */
1476 enum elf_m68k_get_entry_howto
1484 /* Get or create (depending on HOWTO) entry with KEY in GOT.
1485 INFO is context in which memory should be allocated (can be NULL if
1486 HOWTO is SEARCH or MUST_FIND). */
1488 static struct elf_m68k_got_entry
*
1489 elf_m68k_get_got_entry (struct elf_m68k_got
*got
,
1490 const struct elf_m68k_got_entry_key
*key
,
1491 enum elf_m68k_get_entry_howto howto
,
1492 struct bfd_link_info
*info
)
1494 struct elf_m68k_got_entry entry_
;
1495 struct elf_m68k_got_entry
*entry
;
1498 BFD_ASSERT ((info
== NULL
) == (howto
== SEARCH
|| howto
== MUST_FIND
));
1500 if (got
->entries
== NULL
)
1501 /* This is the first entry in ABFD. Initialize hashtable. */
1503 if (howto
== SEARCH
)
1506 got
->entries
= htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT
1508 elf_m68k_got_entry_hash
,
1509 elf_m68k_got_entry_eq
, NULL
);
1510 if (got
->entries
== NULL
)
1512 bfd_set_error (bfd_error_no_memory
);
1518 ptr
= htab_find_slot (got
->entries
, &entry_
, (howto
!= SEARCH
1519 ? INSERT
: NO_INSERT
));
1522 if (howto
== SEARCH
)
1523 /* Entry not found. */
1526 /* We're out of memory. */
1527 bfd_set_error (bfd_error_no_memory
);
1532 /* We didn't find the entry and we're asked to create a new one. */
1534 BFD_ASSERT (howto
!= MUST_FIND
&& howto
!= SEARCH
);
1536 entry
= bfd_alloc (elf_hash_table (info
)->dynobj
, sizeof (*entry
));
1540 /* Initialize new entry. */
1543 entry
->u
.s1
.refcount
= 0;
1545 /* Mark the entry as not initialized. */
1546 entry
->key_
.type
= R_68K_max
;
1551 /* We found the entry. */
1553 BFD_ASSERT (howto
!= MUST_CREATE
);
1561 /* Update GOT counters when merging entry of WAS type with entry of NEW type.
1562 Return the value to which ENTRY's type should be set. */
1564 static enum elf_m68k_reloc_type
1565 elf_m68k_update_got_entry_type (struct elf_m68k_got
*got
,
1566 enum elf_m68k_reloc_type was
,
1567 enum elf_m68k_reloc_type new_reloc
)
1569 enum elf_m68k_got_offset_size was_size
;
1570 enum elf_m68k_got_offset_size new_size
;
1573 if (was
== R_68K_max
)
1574 /* The type of the entry is not initialized yet. */
1576 /* Update all got->n_slots counters, including n_slots[R_32]. */
1583 /* !!! We, probably, should emit an error rather then fail on assert
1585 BFD_ASSERT (elf_m68k_reloc_got_type (was
)
1586 == elf_m68k_reloc_got_type (new_reloc
));
1588 was_size
= elf_m68k_reloc_got_offset_size (was
);
1591 new_size
= elf_m68k_reloc_got_offset_size (new_reloc
);
1592 n_slots
= elf_m68k_reloc_got_n_slots (new_reloc
);
1594 while (was_size
> new_size
)
1597 got
->n_slots
[was_size
] += n_slots
;
1600 if (new_reloc
> was
)
1601 /* Relocations are ordered from bigger got offset size to lesser,
1602 so choose the relocation type with lesser offset size. */
1608 /* Add new or update existing entry to GOT.
1609 H, ABFD, TYPE and SYMNDX is data for the entry.
1610 INFO is a context where memory should be allocated. */
1612 static struct elf_m68k_got_entry
*
1613 elf_m68k_add_entry_to_got (struct elf_m68k_got
*got
,
1614 struct elf_link_hash_entry
*h
,
1616 enum elf_m68k_reloc_type reloc_type
,
1617 unsigned long symndx
,
1618 struct bfd_link_info
*info
)
1620 struct elf_m68k_got_entry_key key_
;
1621 struct elf_m68k_got_entry
*entry
;
1623 if (h
!= NULL
&& elf_m68k_hash_entry (h
)->got_entry_key
== 0)
1624 elf_m68k_hash_entry (h
)->got_entry_key
1625 = elf_m68k_multi_got (info
)->global_symndx
++;
1627 elf_m68k_init_got_entry_key (&key_
, h
, abfd
, symndx
, reloc_type
);
1629 entry
= elf_m68k_get_got_entry (got
, &key_
, FIND_OR_CREATE
, info
);
1633 /* Determine entry's type and update got->n_slots counters. */
1634 entry
->key_
.type
= elf_m68k_update_got_entry_type (got
,
1638 /* Update refcount. */
1639 ++entry
->u
.s1
.refcount
;
1641 if (entry
->u
.s1
.refcount
== 1)
1642 /* We see this entry for the first time. */
1644 if (entry
->key_
.bfd
!= NULL
)
1645 got
->local_n_slots
+= elf_m68k_reloc_got_n_slots (entry
->key_
.type
);
1648 BFD_ASSERT (got
->n_slots
[R_32
] >= got
->local_n_slots
);
1650 if ((got
->n_slots
[R_8
]
1651 > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info
))
1652 || (got
->n_slots
[R_16
]
1653 > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info
)))
1654 /* This BFD has too many relocation. */
1656 if (got
->n_slots
[R_8
] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info
))
1657 /* xgettext:c-format */
1658 _bfd_error_handler (_("%B: GOT overflow: "
1659 "Number of relocations with 8-bit "
1662 ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info
));
1664 /* xgettext:c-format */
1665 _bfd_error_handler (_("%B: GOT overflow: "
1666 "Number of relocations with 8- or 16-bit "
1669 ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info
));
1677 /* Compute the hash value of the bfd in a bfd2got hash entry. */
1680 elf_m68k_bfd2got_entry_hash (const void *entry
)
1682 const struct elf_m68k_bfd2got_entry
*e
;
1684 e
= (const struct elf_m68k_bfd2got_entry
*) entry
;
1689 /* Check whether two hash entries have the same bfd. */
1692 elf_m68k_bfd2got_entry_eq (const void *entry1
, const void *entry2
)
1694 const struct elf_m68k_bfd2got_entry
*e1
;
1695 const struct elf_m68k_bfd2got_entry
*e2
;
1697 e1
= (const struct elf_m68k_bfd2got_entry
*) entry1
;
1698 e2
= (const struct elf_m68k_bfd2got_entry
*) entry2
;
1700 return e1
->bfd
== e2
->bfd
;
1703 /* Destruct a bfd2got entry. */
1706 elf_m68k_bfd2got_entry_del (void *_entry
)
1708 struct elf_m68k_bfd2got_entry
*entry
;
1710 entry
= (struct elf_m68k_bfd2got_entry
*) _entry
;
1712 BFD_ASSERT (entry
->got
!= NULL
);
1713 elf_m68k_clear_got (entry
->got
);
1716 /* Find existing or create new (depending on HOWTO) bfd2got entry in
1717 MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where
1718 memory should be allocated. */
1720 static struct elf_m68k_bfd2got_entry
*
1721 elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got
*multi_got
,
1723 enum elf_m68k_get_entry_howto howto
,
1724 struct bfd_link_info
*info
)
1726 struct elf_m68k_bfd2got_entry entry_
;
1728 struct elf_m68k_bfd2got_entry
*entry
;
1730 BFD_ASSERT ((info
== NULL
) == (howto
== SEARCH
|| howto
== MUST_FIND
));
1732 if (multi_got
->bfd2got
== NULL
)
1733 /* This is the first GOT. Initialize bfd2got. */
1735 if (howto
== SEARCH
)
1738 multi_got
->bfd2got
= htab_try_create (1, elf_m68k_bfd2got_entry_hash
,
1739 elf_m68k_bfd2got_entry_eq
,
1740 elf_m68k_bfd2got_entry_del
);
1741 if (multi_got
->bfd2got
== NULL
)
1743 bfd_set_error (bfd_error_no_memory
);
1749 ptr
= htab_find_slot (multi_got
->bfd2got
, &entry_
, (howto
!= SEARCH
1750 ? INSERT
: NO_INSERT
));
1753 if (howto
== SEARCH
)
1754 /* Entry not found. */
1757 /* We're out of memory. */
1758 bfd_set_error (bfd_error_no_memory
);
1763 /* Entry was not found. Create new one. */
1765 BFD_ASSERT (howto
!= MUST_FIND
&& howto
!= SEARCH
);
1767 entry
= ((struct elf_m68k_bfd2got_entry
*)
1768 bfd_alloc (elf_hash_table (info
)->dynobj
, sizeof (*entry
)));
1774 entry
->got
= elf_m68k_create_empty_got (info
);
1775 if (entry
->got
== NULL
)
1782 BFD_ASSERT (howto
!= MUST_CREATE
);
1784 /* Return existing entry. */
1791 struct elf_m68k_can_merge_gots_arg
1793 /* A current_got that we constructing a DIFF against. */
1794 struct elf_m68k_got
*big
;
1796 /* GOT holding entries not present or that should be changed in
1798 struct elf_m68k_got
*diff
;
1800 /* Context where to allocate memory. */
1801 struct bfd_link_info
*info
;
1804 bfd_boolean error_p
;
1807 /* Process a single entry from the small GOT to see if it should be added
1808 or updated in the big GOT. */
1811 elf_m68k_can_merge_gots_1 (void **_entry_ptr
, void *_arg
)
1813 const struct elf_m68k_got_entry
*entry1
;
1814 struct elf_m68k_can_merge_gots_arg
*arg
;
1815 const struct elf_m68k_got_entry
*entry2
;
1816 enum elf_m68k_reloc_type type
;
1818 entry1
= (const struct elf_m68k_got_entry
*) *_entry_ptr
;
1819 arg
= (struct elf_m68k_can_merge_gots_arg
*) _arg
;
1821 entry2
= elf_m68k_get_got_entry (arg
->big
, &entry1
->key_
, SEARCH
, NULL
);
1824 /* We found an existing entry. Check if we should update it. */
1826 type
= elf_m68k_update_got_entry_type (arg
->diff
,
1830 if (type
== entry2
->key_
.type
)
1831 /* ENTRY1 doesn't update data in ENTRY2. Skip it.
1832 To skip creation of difference entry we use the type,
1833 which we won't see in GOT entries for sure. */
1837 /* We didn't find the entry. Add entry1 to DIFF. */
1839 BFD_ASSERT (entry1
->key_
.type
!= R_68K_max
);
1841 type
= elf_m68k_update_got_entry_type (arg
->diff
,
1842 R_68K_max
, entry1
->key_
.type
);
1844 if (entry1
->key_
.bfd
!= NULL
)
1845 arg
->diff
->local_n_slots
+= elf_m68k_reloc_got_n_slots (type
);
1848 if (type
!= R_68K_max
)
1849 /* Create an entry in DIFF. */
1851 struct elf_m68k_got_entry
*entry
;
1853 entry
= elf_m68k_get_got_entry (arg
->diff
, &entry1
->key_
, MUST_CREATE
,
1857 arg
->error_p
= TRUE
;
1861 entry
->key_
.type
= type
;
1867 /* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it.
1868 Construct DIFF GOT holding the entries which should be added or updated
1869 in BIG GOT to accumulate information from SMALL.
1870 INFO is the context where memory should be allocated. */
1873 elf_m68k_can_merge_gots (struct elf_m68k_got
*big
,
1874 const struct elf_m68k_got
*small
,
1875 struct bfd_link_info
*info
,
1876 struct elf_m68k_got
*diff
)
1878 struct elf_m68k_can_merge_gots_arg arg_
;
1880 BFD_ASSERT (small
->offset
== (bfd_vma
) -1);
1885 arg_
.error_p
= FALSE
;
1886 htab_traverse_noresize (small
->entries
, elf_m68k_can_merge_gots_1
, &arg_
);
1893 /* Check for overflow. */
1894 if ((big
->n_slots
[R_8
] + arg_
.diff
->n_slots
[R_8
]
1895 > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info
))
1896 || (big
->n_slots
[R_16
] + arg_
.diff
->n_slots
[R_16
]
1897 > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info
)))
1903 struct elf_m68k_merge_gots_arg
1906 struct elf_m68k_got
*big
;
1908 /* Context where memory should be allocated. */
1909 struct bfd_link_info
*info
;
1912 bfd_boolean error_p
;
1915 /* Process a single entry from DIFF got. Add or update corresponding
1916 entry in the BIG got. */
1919 elf_m68k_merge_gots_1 (void **entry_ptr
, void *_arg
)
1921 const struct elf_m68k_got_entry
*from
;
1922 struct elf_m68k_merge_gots_arg
*arg
;
1923 struct elf_m68k_got_entry
*to
;
1925 from
= (const struct elf_m68k_got_entry
*) *entry_ptr
;
1926 arg
= (struct elf_m68k_merge_gots_arg
*) _arg
;
1928 to
= elf_m68k_get_got_entry (arg
->big
, &from
->key_
, FIND_OR_CREATE
,
1932 arg
->error_p
= TRUE
;
1936 BFD_ASSERT (to
->u
.s1
.refcount
== 0);
1937 /* All we need to merge is TYPE. */
1938 to
->key_
.type
= from
->key_
.type
;
1943 /* Merge data from DIFF to BIG. INFO is context where memory should be
1947 elf_m68k_merge_gots (struct elf_m68k_got
*big
,
1948 struct elf_m68k_got
*diff
,
1949 struct bfd_link_info
*info
)
1951 if (diff
->entries
!= NULL
)
1952 /* DIFF is not empty. Merge it into BIG GOT. */
1954 struct elf_m68k_merge_gots_arg arg_
;
1956 /* Merge entries. */
1959 arg_
.error_p
= FALSE
;
1960 htab_traverse_noresize (diff
->entries
, elf_m68k_merge_gots_1
, &arg_
);
1964 /* Merge counters. */
1965 big
->n_slots
[R_8
] += diff
->n_slots
[R_8
];
1966 big
->n_slots
[R_16
] += diff
->n_slots
[R_16
];
1967 big
->n_slots
[R_32
] += diff
->n_slots
[R_32
];
1968 big
->local_n_slots
+= diff
->local_n_slots
;
1971 /* DIFF is empty. */
1973 BFD_ASSERT (diff
->n_slots
[R_8
] == 0);
1974 BFD_ASSERT (diff
->n_slots
[R_16
] == 0);
1975 BFD_ASSERT (diff
->n_slots
[R_32
] == 0);
1976 BFD_ASSERT (diff
->local_n_slots
== 0);
1979 BFD_ASSERT (!elf_m68k_hash_table (info
)->allow_multigot_p
1980 || ((big
->n_slots
[R_8
]
1981 <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info
))
1982 && (big
->n_slots
[R_16
]
1983 <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info
))));
1988 struct elf_m68k_finalize_got_offsets_arg
1990 /* Ranges of the offsets for GOT entries.
1991 R_x entries receive offsets between offset1[R_x] and offset2[R_x].
1992 R_x is R_8, R_16 and R_32. */
1996 /* Mapping from global symndx to global symbols.
1997 This is used to build lists of got entries for global symbols. */
1998 struct elf_m68k_link_hash_entry
**symndx2h
;
2000 bfd_vma n_ldm_entries
;
2003 /* Assign ENTRY an offset. Build list of GOT entries for global symbols
2007 elf_m68k_finalize_got_offsets_1 (void **entry_ptr
, void *_arg
)
2009 struct elf_m68k_got_entry
*entry
;
2010 struct elf_m68k_finalize_got_offsets_arg
*arg
;
2012 enum elf_m68k_got_offset_size got_offset_size
;
2015 entry
= (struct elf_m68k_got_entry
*) *entry_ptr
;
2016 arg
= (struct elf_m68k_finalize_got_offsets_arg
*) _arg
;
2018 /* This should be a fresh entry created in elf_m68k_can_merge_gots. */
2019 BFD_ASSERT (entry
->u
.s1
.refcount
== 0);
2021 /* Get GOT offset size for the entry . */
2022 got_offset_size
= elf_m68k_reloc_got_offset_size (entry
->key_
.type
);
2024 /* Calculate entry size in bytes. */
2025 entry_size
= 4 * elf_m68k_reloc_got_n_slots (entry
->key_
.type
);
2027 /* Check if we should switch to negative range of the offsets. */
2028 if (arg
->offset1
[got_offset_size
] + entry_size
2029 > arg
->offset2
[got_offset_size
])
2031 /* Verify that this is the only switch to negative range for
2032 got_offset_size. If this assertion fails, then we've miscalculated
2033 range for got_offset_size entries in
2034 elf_m68k_finalize_got_offsets. */
2035 BFD_ASSERT (arg
->offset2
[got_offset_size
]
2036 != arg
->offset2
[-(int) got_offset_size
- 1]);
2039 arg
->offset1
[got_offset_size
] = arg
->offset1
[-(int) got_offset_size
- 1];
2040 arg
->offset2
[got_offset_size
] = arg
->offset2
[-(int) got_offset_size
- 1];
2042 /* Verify that now we have enough room for the entry. */
2043 BFD_ASSERT (arg
->offset1
[got_offset_size
] + entry_size
2044 <= arg
->offset2
[got_offset_size
]);
2047 /* Assign offset to entry. */
2048 entry
->u
.s2
.offset
= arg
->offset1
[got_offset_size
];
2049 arg
->offset1
[got_offset_size
] += entry_size
;
2051 if (entry
->key_
.bfd
== NULL
)
2052 /* Hook up this entry into the list of got_entries of H. */
2054 struct elf_m68k_link_hash_entry
*h
;
2056 h
= arg
->symndx2h
[entry
->key_
.symndx
];
2059 entry
->u
.s2
.next
= h
->glist
;
2063 /* This should be the entry for TLS_LDM relocation then. */
2065 BFD_ASSERT ((elf_m68k_reloc_got_type (entry
->key_
.type
)
2067 && entry
->key_
.symndx
== 0);
2069 ++arg
->n_ldm_entries
;
2073 /* This entry is for local symbol. */
2074 entry
->u
.s2
.next
= NULL
;
2079 /* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we
2080 should use negative offsets.
2081 Build list of GOT entries for global symbols along the way.
2082 SYMNDX2H is mapping from global symbol indices to actual
2084 Return offset at which next GOT should start. */
2087 elf_m68k_finalize_got_offsets (struct elf_m68k_got
*got
,
2088 bfd_boolean use_neg_got_offsets_p
,
2089 struct elf_m68k_link_hash_entry
**symndx2h
,
2090 bfd_vma
*final_offset
, bfd_vma
*n_ldm_entries
)
2092 struct elf_m68k_finalize_got_offsets_arg arg_
;
2093 bfd_vma offset1_
[2 * R_LAST
];
2094 bfd_vma offset2_
[2 * R_LAST
];
2096 bfd_vma start_offset
;
2098 BFD_ASSERT (got
->offset
!= (bfd_vma
) -1);
2100 /* We set entry offsets relative to the .got section (and not the
2101 start of a particular GOT), so that we can use them in
2102 finish_dynamic_symbol without needing to know the GOT which they come
2105 /* Put offset1 in the middle of offset1_, same for offset2. */
2106 arg_
.offset1
= offset1_
+ R_LAST
;
2107 arg_
.offset2
= offset2_
+ R_LAST
;
2109 start_offset
= got
->offset
;
2111 if (use_neg_got_offsets_p
)
2112 /* Setup both negative and positive ranges for R_8, R_16 and R_32. */
2113 i
= -(int) R_32
- 1;
2115 /* Setup positives ranges for R_8, R_16 and R_32. */
2118 for (; i
<= (int) R_32
; ++i
)
2123 /* Set beginning of the range of offsets I. */
2124 arg_
.offset1
[i
] = start_offset
;
2126 /* Calculate number of slots that require I offsets. */
2127 j
= (i
>= 0) ? i
: -i
- 1;
2128 n
= (j
>= 1) ? got
->n_slots
[j
- 1] : 0;
2129 n
= got
->n_slots
[j
] - n
;
2131 if (use_neg_got_offsets_p
&& n
!= 0)
2134 /* We first fill the positive side of the range, so we might
2135 end up with one empty slot at that side when we can't fit
2136 whole 2-slot entry. Account for that at negative side of
2137 the interval with one additional entry. */
2140 /* When the number of slots is odd, make positive side of the
2141 range one entry bigger. */
2145 /* N is the number of slots that require I offsets.
2146 Calculate length of the range for I offsets. */
2149 /* Set end of the range. */
2150 arg_
.offset2
[i
] = start_offset
+ n
;
2152 start_offset
= arg_
.offset2
[i
];
2155 if (!use_neg_got_offsets_p
)
2156 /* Make sure that if we try to switch to negative offsets in
2157 elf_m68k_finalize_got_offsets_1, the assert therein will catch
2159 for (i
= R_8
; i
<= R_32
; ++i
)
2160 arg_
.offset2
[-i
- 1] = arg_
.offset2
[i
];
2162 /* Setup got->offset. offset1[R_8] is either in the middle or at the
2163 beginning of GOT depending on use_neg_got_offsets_p. */
2164 got
->offset
= arg_
.offset1
[R_8
];
2166 arg_
.symndx2h
= symndx2h
;
2167 arg_
.n_ldm_entries
= 0;
2169 /* Assign offsets. */
2170 htab_traverse (got
->entries
, elf_m68k_finalize_got_offsets_1
, &arg_
);
2172 /* Check offset ranges we have actually assigned. */
2173 for (i
= (int) R_8
; i
<= (int) R_32
; ++i
)
2174 BFD_ASSERT (arg_
.offset2
[i
] - arg_
.offset1
[i
] <= 4);
2176 *final_offset
= start_offset
;
2177 *n_ldm_entries
= arg_
.n_ldm_entries
;
2180 struct elf_m68k_partition_multi_got_arg
2182 /* The GOT we are adding entries to. Aka big got. */
2183 struct elf_m68k_got
*current_got
;
2185 /* Offset to assign the next CURRENT_GOT. */
2188 /* Context where memory should be allocated. */
2189 struct bfd_link_info
*info
;
2191 /* Total number of slots in the .got section.
2192 This is used to calculate size of the .got and .rela.got sections. */
2195 /* Difference in numbers of allocated slots in the .got section
2196 and necessary relocations in the .rela.got section.
2197 This is used to calculate size of the .rela.got section. */
2198 bfd_vma slots_relas_diff
;
2201 bfd_boolean error_p
;
2203 /* Mapping from global symndx to global symbols.
2204 This is used to build lists of got entries for global symbols. */
2205 struct elf_m68k_link_hash_entry
**symndx2h
;
2209 elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg
*arg
)
2211 bfd_vma n_ldm_entries
;
2213 elf_m68k_finalize_got_offsets (arg
->current_got
,
2214 (elf_m68k_hash_table (arg
->info
)
2215 ->use_neg_got_offsets_p
),
2217 &arg
->offset
, &n_ldm_entries
);
2219 arg
->n_slots
+= arg
->current_got
->n_slots
[R_32
];
2221 if (!bfd_link_pic (arg
->info
))
2222 /* If we are generating a shared object, we need to
2223 output a R_68K_RELATIVE reloc so that the dynamic
2224 linker can adjust this GOT entry. Overwise we
2225 don't need space in .rela.got for local symbols. */
2226 arg
->slots_relas_diff
+= arg
->current_got
->local_n_slots
;
2228 /* @LDM relocations require a 2-slot GOT entry, but only
2229 one relocation. Account for that. */
2230 arg
->slots_relas_diff
+= n_ldm_entries
;
2232 BFD_ASSERT (arg
->slots_relas_diff
<= arg
->n_slots
);
2236 /* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT
2237 or start a new CURRENT_GOT. */
2240 elf_m68k_partition_multi_got_1 (void **_entry
, void *_arg
)
2242 struct elf_m68k_bfd2got_entry
*entry
;
2243 struct elf_m68k_partition_multi_got_arg
*arg
;
2244 struct elf_m68k_got
*got
;
2245 struct elf_m68k_got diff_
;
2246 struct elf_m68k_got
*diff
;
2248 entry
= (struct elf_m68k_bfd2got_entry
*) *_entry
;
2249 arg
= (struct elf_m68k_partition_multi_got_arg
*) _arg
;
2252 BFD_ASSERT (got
!= NULL
);
2253 BFD_ASSERT (got
->offset
== (bfd_vma
) -1);
2257 if (arg
->current_got
!= NULL
)
2258 /* Construct diff. */
2261 elf_m68k_init_got (diff
);
2263 if (!elf_m68k_can_merge_gots (arg
->current_got
, got
, arg
->info
, diff
))
2265 if (diff
->offset
== 0)
2266 /* Offset set to 0 in the diff_ indicates an error. */
2268 arg
->error_p
= TRUE
;
2272 if (elf_m68k_hash_table (arg
->info
)->allow_multigot_p
)
2274 elf_m68k_clear_got (diff
);
2275 /* Schedule to finish up current_got and start new one. */
2279 Merge GOTs no matter what. If big GOT overflows,
2280 we'll fail in relocate_section due to truncated relocations.
2282 ??? May be fail earlier? E.g., in can_merge_gots. */
2286 /* Diff of got against empty current_got is got itself. */
2288 /* Create empty current_got to put subsequent GOTs to. */
2289 arg
->current_got
= elf_m68k_create_empty_got (arg
->info
);
2290 if (arg
->current_got
== NULL
)
2292 arg
->error_p
= TRUE
;
2296 arg
->current_got
->offset
= arg
->offset
;
2303 if (!elf_m68k_merge_gots (arg
->current_got
, diff
, arg
->info
))
2305 arg
->error_p
= TRUE
;
2309 /* Now we can free GOT. */
2310 elf_m68k_clear_got (got
);
2312 entry
->got
= arg
->current_got
;
2316 /* Finish up current_got. */
2317 elf_m68k_partition_multi_got_2 (arg
);
2319 /* Schedule to start a new current_got. */
2320 arg
->current_got
= NULL
;
2323 if (!elf_m68k_partition_multi_got_1 (_entry
, _arg
))
2325 BFD_ASSERT (arg
->error_p
);
2332 elf_m68k_clear_got (diff
);
2334 return !arg
->error_p
;
2337 /* Helper function to build symndx2h mapping. */
2340 elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry
*_h
,
2343 struct elf_m68k_link_hash_entry
*h
;
2345 h
= elf_m68k_hash_entry (_h
);
2347 if (h
->got_entry_key
!= 0)
2348 /* H has at least one entry in the GOT. */
2350 struct elf_m68k_partition_multi_got_arg
*arg
;
2352 arg
= (struct elf_m68k_partition_multi_got_arg
*) _arg
;
2354 BFD_ASSERT (arg
->symndx2h
[h
->got_entry_key
] == NULL
);
2355 arg
->symndx2h
[h
->got_entry_key
] = h
;
2361 /* Merge GOTs of some BFDs, assign offsets to GOT entries and build
2362 lists of GOT entries for global symbols.
2363 Calculate sizes of .got and .rela.got sections. */
2366 elf_m68k_partition_multi_got (struct bfd_link_info
*info
)
2368 struct elf_m68k_multi_got
*multi_got
;
2369 struct elf_m68k_partition_multi_got_arg arg_
;
2371 multi_got
= elf_m68k_multi_got (info
);
2373 arg_
.current_got
= NULL
;
2377 arg_
.slots_relas_diff
= 0;
2378 arg_
.error_p
= FALSE
;
2380 if (multi_got
->bfd2got
!= NULL
)
2382 /* Initialize symndx2h mapping. */
2384 arg_
.symndx2h
= bfd_zmalloc (multi_got
->global_symndx
2385 * sizeof (*arg_
.symndx2h
));
2386 if (arg_
.symndx2h
== NULL
)
2389 elf_link_hash_traverse (elf_hash_table (info
),
2390 elf_m68k_init_symndx2h_1
, &arg_
);
2394 htab_traverse (multi_got
->bfd2got
, elf_m68k_partition_multi_got_1
,
2398 free (arg_
.symndx2h
);
2399 arg_
.symndx2h
= NULL
;
2404 /* Finish up last current_got. */
2405 elf_m68k_partition_multi_got_2 (&arg_
);
2407 free (arg_
.symndx2h
);
2410 if (elf_hash_table (info
)->dynobj
!= NULL
)
2411 /* Set sizes of .got and .rela.got sections. */
2415 s
= elf_hash_table (info
)->sgot
;
2417 s
->size
= arg_
.offset
;
2419 BFD_ASSERT (arg_
.offset
== 0);
2421 BFD_ASSERT (arg_
.slots_relas_diff
<= arg_
.n_slots
);
2422 arg_
.n_slots
-= arg_
.slots_relas_diff
;
2424 s
= elf_hash_table (info
)->srelgot
;
2426 s
->size
= arg_
.n_slots
* sizeof (Elf32_External_Rela
);
2428 BFD_ASSERT (arg_
.n_slots
== 0);
2431 BFD_ASSERT (multi_got
->bfd2got
== NULL
);
2436 /* Copy any information related to dynamic linking from a pre-existing
2437 symbol to a newly created symbol. Also called to copy flags and
2438 other back-end info to a weakdef, in which case the symbol is not
2439 newly created and plt/got refcounts and dynamic indices should not
2443 elf_m68k_copy_indirect_symbol (struct bfd_link_info
*info
,
2444 struct elf_link_hash_entry
*_dir
,
2445 struct elf_link_hash_entry
*_ind
)
2447 struct elf_m68k_link_hash_entry
*dir
;
2448 struct elf_m68k_link_hash_entry
*ind
;
2450 _bfd_elf_link_hash_copy_indirect (info
, _dir
, _ind
);
2452 if (_ind
->root
.type
!= bfd_link_hash_indirect
)
2455 dir
= elf_m68k_hash_entry (_dir
);
2456 ind
= elf_m68k_hash_entry (_ind
);
2458 /* Any absolute non-dynamic relocations against an indirect or weak
2459 definition will be against the target symbol. */
2460 _dir
->non_got_ref
|= _ind
->non_got_ref
;
2462 /* We might have a direct symbol already having entries in the GOTs.
2463 Update its key only in case indirect symbol has GOT entries and
2464 assert that both indirect and direct symbols don't have GOT entries
2465 at the same time. */
2466 if (ind
->got_entry_key
!= 0)
2468 BFD_ASSERT (dir
->got_entry_key
== 0);
2469 /* Assert that GOTs aren't partioned yet. */
2470 BFD_ASSERT (ind
->glist
== NULL
);
2472 dir
->got_entry_key
= ind
->got_entry_key
;
2473 ind
->got_entry_key
= 0;
2477 /* Look through the relocs for a section during the first phase, and
2478 allocate space in the global offset table or procedure linkage
2482 elf_m68k_check_relocs (bfd
*abfd
,
2483 struct bfd_link_info
*info
,
2485 const Elf_Internal_Rela
*relocs
)
2488 Elf_Internal_Shdr
*symtab_hdr
;
2489 struct elf_link_hash_entry
**sym_hashes
;
2490 const Elf_Internal_Rela
*rel
;
2491 const Elf_Internal_Rela
*rel_end
;
2493 struct elf_m68k_got
*got
;
2495 if (bfd_link_relocatable (info
))
2498 dynobj
= elf_hash_table (info
)->dynobj
;
2499 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2500 sym_hashes
= elf_sym_hashes (abfd
);
2506 rel_end
= relocs
+ sec
->reloc_count
;
2507 for (rel
= relocs
; rel
< rel_end
; rel
++)
2509 unsigned long r_symndx
;
2510 struct elf_link_hash_entry
*h
;
2512 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2514 if (r_symndx
< symtab_hdr
->sh_info
)
2518 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2519 while (h
->root
.type
== bfd_link_hash_indirect
2520 || h
->root
.type
== bfd_link_hash_warning
)
2521 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2523 /* PR15323, ref flags aren't set for references in the same
2525 h
->root
.non_ir_ref_regular
= 1;
2528 switch (ELF32_R_TYPE (rel
->r_info
))
2534 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
2538 /* Relative GOT relocations. */
2544 /* TLS relocations. */
2546 case R_68K_TLS_GD16
:
2547 case R_68K_TLS_GD32
:
2548 case R_68K_TLS_LDM8
:
2549 case R_68K_TLS_LDM16
:
2550 case R_68K_TLS_LDM32
:
2552 case R_68K_TLS_IE16
:
2553 case R_68K_TLS_IE32
:
2555 case R_68K_TLS_TPREL32
:
2556 case R_68K_TLS_DTPREL32
:
2558 if (ELF32_R_TYPE (rel
->r_info
) == R_68K_TLS_TPREL32
2559 && bfd_link_pic (info
))
2560 /* Do the special chorus for libraries with static TLS. */
2561 info
->flags
|= DF_STATIC_TLS
;
2563 /* This symbol requires a global offset table entry. */
2567 /* Create the .got section. */
2568 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
2569 if (!_bfd_elf_create_got_section (dynobj
, info
))
2575 struct elf_m68k_bfd2got_entry
*bfd2got_entry
;
2578 = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info
),
2579 abfd
, FIND_OR_CREATE
, info
);
2580 if (bfd2got_entry
== NULL
)
2583 got
= bfd2got_entry
->got
;
2584 BFD_ASSERT (got
!= NULL
);
2588 struct elf_m68k_got_entry
*got_entry
;
2590 /* Add entry to got. */
2591 got_entry
= elf_m68k_add_entry_to_got (got
, h
, abfd
,
2592 ELF32_R_TYPE (rel
->r_info
),
2594 if (got_entry
== NULL
)
2597 if (got_entry
->u
.s1
.refcount
== 1)
2599 /* Make sure this symbol is output as a dynamic symbol. */
2602 && !h
->forced_local
)
2604 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
2615 /* This symbol requires a procedure linkage table entry. We
2616 actually build the entry in adjust_dynamic_symbol,
2617 because this might be a case of linking PIC code which is
2618 never referenced by a dynamic object, in which case we
2619 don't need to generate a procedure linkage table entry
2622 /* If this is a local symbol, we resolve it directly without
2623 creating a procedure linkage table entry. */
2634 /* This symbol requires a procedure linkage table entry. */
2638 /* It does not make sense to have this relocation for a
2639 local symbol. FIXME: does it? How to handle it if
2640 it does make sense? */
2641 bfd_set_error (bfd_error_bad_value
);
2645 /* Make sure this symbol is output as a dynamic symbol. */
2646 if (h
->dynindx
== -1
2647 && !h
->forced_local
)
2649 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
2660 /* If we are creating a shared library and this is not a local
2661 symbol, we need to copy the reloc into the shared library.
2662 However when linking with -Bsymbolic and this is a global
2663 symbol which is defined in an object we are including in the
2664 link (i.e., DEF_REGULAR is set), then we can resolve the
2665 reloc directly. At this point we have not seen all the input
2666 files, so it is possible that DEF_REGULAR is not set now but
2667 will be set later (it is never cleared). We account for that
2668 possibility below by storing information in the
2669 pcrel_relocs_copied field of the hash table entry. */
2670 if (!(bfd_link_pic (info
)
2671 && (sec
->flags
& SEC_ALLOC
) != 0
2673 && (!SYMBOLIC_BIND (info
, h
)
2674 || h
->root
.type
== bfd_link_hash_defweak
2675 || !h
->def_regular
)))
2679 /* Make sure a plt entry is created for this symbol if
2680 it turns out to be a function defined by a dynamic
2690 /* We don't need to handle relocs into sections not going into
2691 the "real" output. */
2692 if ((sec
->flags
& SEC_ALLOC
) == 0)
2697 /* Make sure a plt entry is created for this symbol if it
2698 turns out to be a function defined by a dynamic object. */
2701 if (bfd_link_executable (info
))
2702 /* This symbol needs a non-GOT reference. */
2706 /* If we are creating a shared library, we need to copy the
2707 reloc into the shared library. */
2708 if (bfd_link_pic (info
)
2710 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
2712 /* When creating a shared object, we must copy these
2713 reloc types into the output file. We create a reloc
2714 section in dynobj and make room for this reloc. */
2717 sreloc
= _bfd_elf_make_dynamic_reloc_section
2718 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
2724 if (sec
->flags
& SEC_READONLY
2725 /* Don't set DF_TEXTREL yet for PC relative
2726 relocations, they might be discarded later. */
2727 && !(ELF32_R_TYPE (rel
->r_info
) == R_68K_PC8
2728 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC16
2729 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC32
))
2730 info
->flags
|= DF_TEXTREL
;
2732 sreloc
->size
+= sizeof (Elf32_External_Rela
);
2734 /* We count the number of PC relative relocations we have
2735 entered for this symbol, so that we can discard them
2736 again if, in the -Bsymbolic case, the symbol is later
2737 defined by a regular object, or, in the normal shared
2738 case, the symbol is forced to be local. Note that this
2739 function is only called if we are using an m68kelf linker
2740 hash table, which means that h is really a pointer to an
2741 elf_m68k_link_hash_entry. */
2742 if (ELF32_R_TYPE (rel
->r_info
) == R_68K_PC8
2743 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC16
2744 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC32
)
2746 struct elf_m68k_pcrel_relocs_copied
*p
;
2747 struct elf_m68k_pcrel_relocs_copied
**head
;
2751 struct elf_m68k_link_hash_entry
*eh
2752 = elf_m68k_hash_entry (h
);
2753 head
= &eh
->pcrel_relocs_copied
;
2759 Elf_Internal_Sym
*isym
;
2761 isym
= bfd_sym_from_r_symndx (&elf_m68k_hash_table (info
)->sym_cache
,
2766 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2770 vpp
= &elf_section_data (s
)->local_dynrel
;
2771 head
= (struct elf_m68k_pcrel_relocs_copied
**) vpp
;
2774 for (p
= *head
; p
!= NULL
; p
= p
->next
)
2775 if (p
->section
== sreloc
)
2780 p
= ((struct elf_m68k_pcrel_relocs_copied
*)
2781 bfd_alloc (dynobj
, (bfd_size_type
) sizeof *p
));
2786 p
->section
= sreloc
;
2796 /* This relocation describes the C++ object vtable hierarchy.
2797 Reconstruct it for later use during GC. */
2798 case R_68K_GNU_VTINHERIT
:
2799 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
2803 /* This relocation describes which C++ vtable entries are actually
2804 used. Record for later use during GC. */
2805 case R_68K_GNU_VTENTRY
:
2806 BFD_ASSERT (h
!= NULL
);
2808 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
2820 /* Return the section that should be marked against GC for a given
2824 elf_m68k_gc_mark_hook (asection
*sec
,
2825 struct bfd_link_info
*info
,
2826 Elf_Internal_Rela
*rel
,
2827 struct elf_link_hash_entry
*h
,
2828 Elf_Internal_Sym
*sym
)
2831 switch (ELF32_R_TYPE (rel
->r_info
))
2833 case R_68K_GNU_VTINHERIT
:
2834 case R_68K_GNU_VTENTRY
:
2838 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
2841 /* Return the type of PLT associated with OUTPUT_BFD. */
2843 static const struct elf_m68k_plt_info
*
2844 elf_m68k_get_plt_info (bfd
*output_bfd
)
2846 unsigned int features
;
2848 features
= bfd_m68k_mach_to_features (bfd_get_mach (output_bfd
));
2849 if (features
& cpu32
)
2850 return &elf_cpu32_plt_info
;
2851 if (features
& mcfisa_b
)
2852 return &elf_isab_plt_info
;
2853 if (features
& mcfisa_c
)
2854 return &elf_isac_plt_info
;
2855 return &elf_m68k_plt_info
;
2858 /* This function is called after all the input files have been read,
2859 and the input sections have been assigned to output sections.
2860 It's a convenient place to determine the PLT style. */
2863 elf_m68k_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
2865 /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got
2867 if (!elf_m68k_partition_multi_got (info
))
2870 elf_m68k_hash_table (info
)->plt_info
= elf_m68k_get_plt_info (output_bfd
);
2874 /* Adjust a symbol defined by a dynamic object and referenced by a
2875 regular object. The current definition is in some section of the
2876 dynamic object, but we're not including those sections. We have to
2877 change the definition to something the rest of the link can
2881 elf_m68k_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2882 struct elf_link_hash_entry
*h
)
2884 struct elf_m68k_link_hash_table
*htab
;
2888 htab
= elf_m68k_hash_table (info
);
2889 dynobj
= htab
->root
.dynobj
;
2891 /* Make sure we know what is going on here. */
2892 BFD_ASSERT (dynobj
!= NULL
2897 && !h
->def_regular
)));
2899 /* If this is a function, put it in the procedure linkage table. We
2900 will fill in the contents of the procedure linkage table later,
2901 when we know the address of the .got section. */
2902 if (h
->type
== STT_FUNC
2905 if ((h
->plt
.refcount
<= 0
2906 || SYMBOL_CALLS_LOCAL (info
, h
)
2907 || ((ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2908 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
2909 && h
->root
.type
== bfd_link_hash_undefweak
))
2910 /* We must always create the plt entry if it was referenced
2911 by a PLTxxO relocation. In this case we already recorded
2912 it as a dynamic symbol. */
2913 && h
->dynindx
== -1)
2915 /* This case can occur if we saw a PLTxx reloc in an input
2916 file, but the symbol was never referred to by a dynamic
2917 object, or if all references were garbage collected. In
2918 such a case, we don't actually need to build a procedure
2919 linkage table, and we can just do a PCxx reloc instead. */
2920 h
->plt
.offset
= (bfd_vma
) -1;
2925 /* Make sure this symbol is output as a dynamic symbol. */
2926 if (h
->dynindx
== -1
2927 && !h
->forced_local
)
2929 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2933 s
= htab
->root
.splt
;
2934 BFD_ASSERT (s
!= NULL
);
2936 /* If this is the first .plt entry, make room for the special
2939 s
->size
= htab
->plt_info
->size
;
2941 /* If this symbol is not defined in a regular file, and we are
2942 not generating a shared library, then set the symbol to this
2943 location in the .plt. This is required to make function
2944 pointers compare as equal between the normal executable and
2945 the shared library. */
2946 if (!bfd_link_pic (info
)
2949 h
->root
.u
.def
.section
= s
;
2950 h
->root
.u
.def
.value
= s
->size
;
2953 h
->plt
.offset
= s
->size
;
2955 /* Make room for this entry. */
2956 s
->size
+= htab
->plt_info
->size
;
2958 /* We also need to make an entry in the .got.plt section, which
2959 will be placed in the .got section by the linker script. */
2960 s
= htab
->root
.sgotplt
;
2961 BFD_ASSERT (s
!= NULL
);
2964 /* We also need to make an entry in the .rela.plt section. */
2965 s
= htab
->root
.srelplt
;
2966 BFD_ASSERT (s
!= NULL
);
2967 s
->size
+= sizeof (Elf32_External_Rela
);
2972 /* Reinitialize the plt offset now that it is not used as a reference
2974 h
->plt
.offset
= (bfd_vma
) -1;
2976 /* If this is a weak symbol, and there is a real definition, the
2977 processor independent code will have arranged for us to see the
2978 real definition first, and we can just use the same value. */
2979 if (h
->is_weakalias
)
2981 struct elf_link_hash_entry
*def
= weakdef (h
);
2982 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2983 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2984 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2988 /* This is a reference to a symbol defined by a dynamic object which
2989 is not a function. */
2991 /* If we are creating a shared library, we must presume that the
2992 only references to the symbol are via the global offset table.
2993 For such cases we need not do anything here; the relocations will
2994 be handled correctly by relocate_section. */
2995 if (bfd_link_pic (info
))
2998 /* If there are no references to this symbol that do not use the
2999 GOT, we don't need to generate a copy reloc. */
3000 if (!h
->non_got_ref
)
3003 /* We must allocate the symbol in our .dynbss section, which will
3004 become part of the .bss section of the executable. There will be
3005 an entry for this symbol in the .dynsym section. The dynamic
3006 object will contain position independent code, so all references
3007 from the dynamic object to this symbol will go through the global
3008 offset table. The dynamic linker will use the .dynsym entry to
3009 determine the address it must put in the global offset table, so
3010 both the dynamic object and the regular object will refer to the
3011 same memory location for the variable. */
3013 s
= bfd_get_linker_section (dynobj
, ".dynbss");
3014 BFD_ASSERT (s
!= NULL
);
3016 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
3017 copy the initial value out of the dynamic object and into the
3018 runtime process image. We need to remember the offset into the
3019 .rela.bss section we are going to use. */
3020 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
3024 srel
= bfd_get_linker_section (dynobj
, ".rela.bss");
3025 BFD_ASSERT (srel
!= NULL
);
3026 srel
->size
+= sizeof (Elf32_External_Rela
);
3030 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
3033 /* Set the sizes of the dynamic sections. */
3036 elf_m68k_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3037 struct bfd_link_info
*info
)
3044 dynobj
= elf_hash_table (info
)->dynobj
;
3045 BFD_ASSERT (dynobj
!= NULL
);
3047 if (elf_hash_table (info
)->dynamic_sections_created
)
3049 /* Set the contents of the .interp section to the interpreter. */
3050 if (bfd_link_executable (info
) && !info
->nointerp
)
3052 s
= bfd_get_linker_section (dynobj
, ".interp");
3053 BFD_ASSERT (s
!= NULL
);
3054 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3055 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3060 /* We may have created entries in the .rela.got section.
3061 However, if we are not creating the dynamic sections, we will
3062 not actually use these entries. Reset the size of .rela.got,
3063 which will cause it to get stripped from the output file
3065 s
= elf_hash_table (info
)->srelgot
;
3070 /* If this is a -Bsymbolic shared link, then we need to discard all
3071 PC relative relocs against symbols defined in a regular object.
3072 For the normal shared case we discard the PC relative relocs
3073 against symbols that have become local due to visibility changes.
3074 We allocated space for them in the check_relocs routine, but we
3075 will not fill them in in the relocate_section routine. */
3076 if (bfd_link_pic (info
))
3077 elf_link_hash_traverse (elf_hash_table (info
),
3078 elf_m68k_discard_copies
,
3081 /* The check_relocs and adjust_dynamic_symbol entry points have
3082 determined the sizes of the various dynamic sections. Allocate
3086 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3090 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3093 /* It's OK to base decisions on the section name, because none
3094 of the dynobj section names depend upon the input files. */
3095 name
= bfd_get_section_name (dynobj
, s
);
3097 if (strcmp (name
, ".plt") == 0)
3099 /* Remember whether there is a PLT. */
3102 else if (CONST_STRNEQ (name
, ".rela"))
3108 /* We use the reloc_count field as a counter if we need
3109 to copy relocs into the output file. */
3113 else if (! CONST_STRNEQ (name
, ".got")
3114 && strcmp (name
, ".dynbss") != 0)
3116 /* It's not one of our sections, so don't allocate space. */
3122 /* If we don't need this section, strip it from the
3123 output file. This is mostly to handle .rela.bss and
3124 .rela.plt. We must create both sections in
3125 create_dynamic_sections, because they must be created
3126 before the linker maps input sections to output
3127 sections. The linker does that before
3128 adjust_dynamic_symbol is called, and it is that
3129 function which decides whether anything needs to go
3130 into these sections. */
3131 s
->flags
|= SEC_EXCLUDE
;
3135 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3138 /* Allocate memory for the section contents. */
3139 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3140 Unused entries should be reclaimed before the section's contents
3141 are written out, but at the moment this does not happen. Thus in
3142 order to prevent writing out garbage, we initialise the section's
3143 contents to zero. */
3144 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
3145 if (s
->contents
== NULL
)
3149 if (elf_hash_table (info
)->dynamic_sections_created
)
3151 /* Add some entries to the .dynamic section. We fill in the
3152 values later, in elf_m68k_finish_dynamic_sections, but we
3153 must add the entries now so that we get the correct size for
3154 the .dynamic section. The DT_DEBUG entry is filled in by the
3155 dynamic linker and used by the debugger. */
3156 #define add_dynamic_entry(TAG, VAL) \
3157 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3159 if (bfd_link_executable (info
))
3161 if (!add_dynamic_entry (DT_DEBUG
, 0))
3167 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3168 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3169 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3170 || !add_dynamic_entry (DT_JMPREL
, 0))
3176 if (!add_dynamic_entry (DT_RELA
, 0)
3177 || !add_dynamic_entry (DT_RELASZ
, 0)
3178 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3182 if ((info
->flags
& DF_TEXTREL
) != 0)
3184 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3188 #undef add_dynamic_entry
3193 /* This function is called via elf_link_hash_traverse if we are
3194 creating a shared object. In the -Bsymbolic case it discards the
3195 space allocated to copy PC relative relocs against symbols which
3196 are defined in regular objects. For the normal shared case, it
3197 discards space for pc-relative relocs that have become local due to
3198 symbol visibility changes. We allocated space for them in the
3199 check_relocs routine, but we won't fill them in in the
3200 relocate_section routine.
3202 We also check whether any of the remaining relocations apply
3203 against a readonly section, and set the DF_TEXTREL flag in this
3207 elf_m68k_discard_copies (struct elf_link_hash_entry
*h
,
3210 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
3211 struct elf_m68k_pcrel_relocs_copied
*s
;
3213 if (!SYMBOL_CALLS_LOCAL (info
, h
))
3215 if ((info
->flags
& DF_TEXTREL
) == 0)
3217 /* Look for relocations against read-only sections. */
3218 for (s
= elf_m68k_hash_entry (h
)->pcrel_relocs_copied
;
3221 if ((s
->section
->flags
& SEC_READONLY
) != 0)
3223 info
->flags
|= DF_TEXTREL
;
3228 /* Make sure undefined weak symbols are output as a dynamic symbol
3231 && h
->root
.type
== bfd_link_hash_undefweak
3232 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3234 && !h
->forced_local
)
3236 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3243 for (s
= elf_m68k_hash_entry (h
)->pcrel_relocs_copied
;
3246 s
->section
->size
-= s
->count
* sizeof (Elf32_External_Rela
);
3252 /* Install relocation RELA. */
3255 elf_m68k_install_rela (bfd
*output_bfd
,
3257 Elf_Internal_Rela
*rela
)
3261 loc
= srela
->contents
;
3262 loc
+= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3263 bfd_elf32_swap_reloca_out (output_bfd
, rela
, loc
);
3266 /* Find the base offsets for thread-local storage in this object,
3267 for GD/LD and IE/LE respectively. */
3269 #define DTP_OFFSET 0x8000
3270 #define TP_OFFSET 0x7000
3273 dtpoff_base (struct bfd_link_info
*info
)
3275 /* If tls_sec is NULL, we should have signalled an error already. */
3276 if (elf_hash_table (info
)->tls_sec
== NULL
)
3278 return elf_hash_table (info
)->tls_sec
->vma
+ DTP_OFFSET
;
3282 tpoff_base (struct bfd_link_info
*info
)
3284 /* If tls_sec is NULL, we should have signalled an error already. */
3285 if (elf_hash_table (info
)->tls_sec
== NULL
)
3287 return elf_hash_table (info
)->tls_sec
->vma
+ TP_OFFSET
;
3290 /* Output necessary relocation to handle a symbol during static link.
3291 This function is called from elf_m68k_relocate_section. */
3294 elf_m68k_init_got_entry_static (struct bfd_link_info
*info
,
3296 enum elf_m68k_reloc_type r_type
,
3298 bfd_vma got_entry_offset
,
3301 switch (elf_m68k_reloc_got_type (r_type
))
3304 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ got_entry_offset
);
3307 case R_68K_TLS_GD32
:
3308 /* We know the offset within the module,
3309 put it into the second GOT slot. */
3310 bfd_put_32 (output_bfd
, relocation
- dtpoff_base (info
),
3311 sgot
->contents
+ got_entry_offset
+ 4);
3314 case R_68K_TLS_LDM32
:
3315 /* Mark it as belonging to module 1, the executable. */
3316 bfd_put_32 (output_bfd
, 1, sgot
->contents
+ got_entry_offset
);
3319 case R_68K_TLS_IE32
:
3320 bfd_put_32 (output_bfd
, relocation
- tpoff_base (info
),
3321 sgot
->contents
+ got_entry_offset
);
3329 /* Output necessary relocation to handle a local symbol
3330 during dynamic link.
3331 This function is called either from elf_m68k_relocate_section
3332 or from elf_m68k_finish_dynamic_symbol. */
3335 elf_m68k_init_got_entry_local_shared (struct bfd_link_info
*info
,
3337 enum elf_m68k_reloc_type r_type
,
3339 bfd_vma got_entry_offset
,
3343 Elf_Internal_Rela outrel
;
3345 switch (elf_m68k_reloc_got_type (r_type
))
3348 /* Emit RELATIVE relocation to initialize GOT slot
3350 outrel
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
3351 outrel
.r_addend
= relocation
;
3354 case R_68K_TLS_GD32
:
3355 /* We know the offset within the module,
3356 put it into the second GOT slot. */
3357 bfd_put_32 (output_bfd
, relocation
- dtpoff_base (info
),
3358 sgot
->contents
+ got_entry_offset
+ 4);
3361 case R_68K_TLS_LDM32
:
3362 /* We don't know the module number,
3363 create a relocation for it. */
3364 outrel
.r_info
= ELF32_R_INFO (0, R_68K_TLS_DTPMOD32
);
3365 outrel
.r_addend
= 0;
3368 case R_68K_TLS_IE32
:
3369 /* Emit TPREL relocation to initialize GOT slot
3371 outrel
.r_info
= ELF32_R_INFO (0, R_68K_TLS_TPREL32
);
3372 outrel
.r_addend
= relocation
- elf_hash_table (info
)->tls_sec
->vma
;
3379 /* Offset of the GOT entry. */
3380 outrel
.r_offset
= (sgot
->output_section
->vma
3381 + sgot
->output_offset
3382 + got_entry_offset
);
3384 /* Install one of the above relocations. */
3385 elf_m68k_install_rela (output_bfd
, srela
, &outrel
);
3387 bfd_put_32 (output_bfd
, outrel
.r_addend
, sgot
->contents
+ got_entry_offset
);
3390 /* Relocate an M68K ELF section. */
3393 elf_m68k_relocate_section (bfd
*output_bfd
,
3394 struct bfd_link_info
*info
,
3396 asection
*input_section
,
3398 Elf_Internal_Rela
*relocs
,
3399 Elf_Internal_Sym
*local_syms
,
3400 asection
**local_sections
)
3402 Elf_Internal_Shdr
*symtab_hdr
;
3403 struct elf_link_hash_entry
**sym_hashes
;
3408 struct elf_m68k_got
*got
;
3409 Elf_Internal_Rela
*rel
;
3410 Elf_Internal_Rela
*relend
;
3412 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3413 sym_hashes
= elf_sym_hashes (input_bfd
);
3423 relend
= relocs
+ input_section
->reloc_count
;
3424 for (; rel
< relend
; rel
++)
3427 reloc_howto_type
*howto
;
3428 unsigned long r_symndx
;
3429 struct elf_link_hash_entry
*h
;
3430 Elf_Internal_Sym
*sym
;
3433 bfd_boolean unresolved_reloc
;
3434 bfd_reloc_status_type r
;
3435 bfd_boolean resolved_to_zero
;
3437 r_type
= ELF32_R_TYPE (rel
->r_info
);
3438 if (r_type
< 0 || r_type
>= (int) R_68K_max
)
3440 bfd_set_error (bfd_error_bad_value
);
3443 howto
= howto_table
+ r_type
;
3445 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3450 unresolved_reloc
= FALSE
;
3452 if (r_symndx
< symtab_hdr
->sh_info
)
3454 sym
= local_syms
+ r_symndx
;
3455 sec
= local_sections
[r_symndx
];
3456 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
3460 bfd_boolean warned
, ignored
;
3462 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
3463 r_symndx
, symtab_hdr
, sym_hashes
,
3465 unresolved_reloc
, warned
, ignored
);
3468 if (sec
!= NULL
&& discarded_section (sec
))
3469 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3470 rel
, 1, relend
, howto
, 0, contents
);
3472 if (bfd_link_relocatable (info
))
3475 resolved_to_zero
= (h
!= NULL
3476 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
3483 /* Relocation is to the address of the entry for this symbol
3484 in the global offset table. */
3486 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3488 if (elf_m68k_hash_table (info
)->local_gp_p
)
3490 bfd_vma sgot_output_offset
;
3493 sgot
= elf_hash_table (info
)->sgot
;
3496 sgot_output_offset
= sgot
->output_offset
;
3498 /* In this case we have a reference to
3499 _GLOBAL_OFFSET_TABLE_, but the GOT itself is
3501 ??? Issue a warning? */
3502 sgot_output_offset
= 0;
3506 struct elf_m68k_bfd2got_entry
*bfd2got_entry
;
3509 = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info
),
3510 input_bfd
, SEARCH
, NULL
);
3512 if (bfd2got_entry
!= NULL
)
3514 got
= bfd2got_entry
->got
;
3515 BFD_ASSERT (got
!= NULL
);
3517 got_offset
= got
->offset
;
3520 /* In this case we have a reference to
3521 _GLOBAL_OFFSET_TABLE_, but no other references
3522 accessing any GOT entries.
3523 ??? Issue a warning? */
3527 got_offset
= got
->offset
;
3529 /* Adjust GOT pointer to point to the GOT
3530 assigned to input_bfd. */
3531 rel
->r_addend
+= sgot_output_offset
+ got_offset
;
3534 BFD_ASSERT (got
== NULL
|| got
->offset
== 0);
3543 case R_68K_TLS_LDM32
:
3544 case R_68K_TLS_LDM16
:
3545 case R_68K_TLS_LDM8
:
3548 case R_68K_TLS_GD16
:
3549 case R_68K_TLS_GD32
:
3552 case R_68K_TLS_IE16
:
3553 case R_68K_TLS_IE32
:
3555 /* Relocation is the offset of the entry for this symbol in
3556 the global offset table. */
3559 struct elf_m68k_got_entry_key key_
;
3563 sgot
= elf_hash_table (info
)->sgot
;
3564 BFD_ASSERT (sgot
!= NULL
);
3568 got
= elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info
),
3569 input_bfd
, MUST_FIND
,
3571 BFD_ASSERT (got
!= NULL
);
3574 /* Get GOT offset for this symbol. */
3575 elf_m68k_init_got_entry_key (&key_
, h
, input_bfd
, r_symndx
,
3577 off_ptr
= &elf_m68k_get_got_entry (got
, &key_
, MUST_FIND
,
3581 /* The offset must always be a multiple of 4. We use
3582 the least significant bit to record whether we have
3583 already generated the necessary reloc. */
3589 /* @TLSLDM relocations are bounded to the module, in
3590 which the symbol is defined -- not to the symbol
3592 && elf_m68k_reloc_got_type (r_type
) != R_68K_TLS_LDM32
)
3596 dyn
= elf_hash_table (info
)->dynamic_sections_created
;
3597 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
3598 bfd_link_pic (info
),
3600 || (bfd_link_pic (info
)
3601 && SYMBOL_REFERENCES_LOCAL (info
, h
))
3602 || ((ELF_ST_VISIBILITY (h
->other
)
3603 || resolved_to_zero
)
3604 && h
->root
.type
== bfd_link_hash_undefweak
))
3606 /* This is actually a static link, or it is a
3607 -Bsymbolic link and the symbol is defined
3608 locally, or the symbol was forced to be local
3609 because of a version file. We must initialize
3610 this entry in the global offset table. Since
3611 the offset must always be a multiple of 4, we
3612 use the least significant bit to record whether
3613 we have initialized it already.
3615 When doing a dynamic link, we create a .rela.got
3616 relocation entry to initialize the value. This
3617 is done in the finish_dynamic_symbol routine. */
3619 elf_m68k_init_got_entry_static (info
,
3629 unresolved_reloc
= FALSE
;
3631 else if (bfd_link_pic (info
)) /* && h == NULL */
3632 /* Process local symbol during dynamic link. */
3634 srela
= elf_hash_table (info
)->srelgot
;
3635 BFD_ASSERT (srela
!= NULL
);
3637 elf_m68k_init_got_entry_local_shared (info
,
3647 else /* h == NULL && !bfd_link_pic (info) */
3649 elf_m68k_init_got_entry_static (info
,
3660 /* We don't use elf_m68k_reloc_got_type in the condition below
3661 because this is the only place where difference between
3662 R_68K_GOTx and R_68K_GOTxO relocations matters. */
3663 if (r_type
== R_68K_GOT32O
3664 || r_type
== R_68K_GOT16O
3665 || r_type
== R_68K_GOT8O
3666 || elf_m68k_reloc_got_type (r_type
) == R_68K_TLS_GD32
3667 || elf_m68k_reloc_got_type (r_type
) == R_68K_TLS_LDM32
3668 || elf_m68k_reloc_got_type (r_type
) == R_68K_TLS_IE32
)
3670 /* GOT pointer is adjusted to point to the start/middle
3671 of local GOT. Adjust the offset accordingly. */
3672 BFD_ASSERT (elf_m68k_hash_table (info
)->use_neg_got_offsets_p
3673 || off
>= got
->offset
);
3675 if (elf_m68k_hash_table (info
)->local_gp_p
)
3676 relocation
= off
- got
->offset
;
3679 BFD_ASSERT (got
->offset
== 0);
3680 relocation
= sgot
->output_offset
+ off
;
3683 /* This relocation does not use the addend. */
3687 relocation
= (sgot
->output_section
->vma
+ sgot
->output_offset
3692 case R_68K_TLS_LDO32
:
3693 case R_68K_TLS_LDO16
:
3694 case R_68K_TLS_LDO8
:
3695 relocation
-= dtpoff_base (info
);
3698 case R_68K_TLS_LE32
:
3699 case R_68K_TLS_LE16
:
3701 if (bfd_link_dll (info
))
3704 /* xgettext:c-format */
3705 (_("%B(%A+%#Lx): %s relocation not permitted in shared object"),
3706 input_bfd
, input_section
, rel
->r_offset
, howto
->name
);
3711 relocation
-= tpoff_base (info
);
3718 /* Relocation is to the entry for this symbol in the
3719 procedure linkage table. */
3721 /* Resolve a PLTxx reloc against a local symbol directly,
3722 without using the procedure linkage table. */
3726 if (h
->plt
.offset
== (bfd_vma
) -1
3727 || !elf_hash_table (info
)->dynamic_sections_created
)
3729 /* We didn't make a PLT entry for this symbol. This
3730 happens when statically linking PIC code, or when
3731 using -Bsymbolic. */
3735 splt
= elf_hash_table (info
)->splt
;
3736 BFD_ASSERT (splt
!= NULL
);
3738 relocation
= (splt
->output_section
->vma
3739 + splt
->output_offset
3741 unresolved_reloc
= FALSE
;
3747 /* Relocation is the offset of the entry for this symbol in
3748 the procedure linkage table. */
3749 BFD_ASSERT (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1);
3751 splt
= elf_hash_table (info
)->splt
;
3752 BFD_ASSERT (splt
!= NULL
);
3754 relocation
= h
->plt
.offset
;
3755 unresolved_reloc
= FALSE
;
3757 /* This relocation does not use the addend. */
3768 if (bfd_link_pic (info
)
3769 && r_symndx
!= STN_UNDEF
3770 && (input_section
->flags
& SEC_ALLOC
) != 0
3772 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3773 && !resolved_to_zero
)
3774 || h
->root
.type
!= bfd_link_hash_undefweak
)
3775 && ((r_type
!= R_68K_PC8
3776 && r_type
!= R_68K_PC16
3777 && r_type
!= R_68K_PC32
)
3778 || !SYMBOL_CALLS_LOCAL (info
, h
)))
3780 Elf_Internal_Rela outrel
;
3782 bfd_boolean skip
, relocate
;
3784 /* When generating a shared object, these relocations
3785 are copied into the output file to be resolved at run
3792 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3794 if (outrel
.r_offset
== (bfd_vma
) -1)
3796 else if (outrel
.r_offset
== (bfd_vma
) -2)
3797 skip
= TRUE
, relocate
= TRUE
;
3798 outrel
.r_offset
+= (input_section
->output_section
->vma
3799 + input_section
->output_offset
);
3802 memset (&outrel
, 0, sizeof outrel
);
3805 && (r_type
== R_68K_PC8
3806 || r_type
== R_68K_PC16
3807 || r_type
== R_68K_PC32
3808 || !bfd_link_pic (info
)
3809 || !SYMBOLIC_BIND (info
, h
)
3810 || !h
->def_regular
))
3812 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
3813 outrel
.r_addend
= rel
->r_addend
;
3817 /* This symbol is local, or marked to become local. */
3818 outrel
.r_addend
= relocation
+ rel
->r_addend
;
3820 if (r_type
== R_68K_32
)
3823 outrel
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
3829 if (bfd_is_abs_section (sec
))
3831 else if (sec
== NULL
|| sec
->owner
== NULL
)
3833 bfd_set_error (bfd_error_bad_value
);
3840 /* We are turning this relocation into one
3841 against a section symbol. It would be
3842 proper to subtract the symbol's value,
3843 osec->vma, from the emitted reloc addend,
3844 but ld.so expects buggy relocs. */
3845 osec
= sec
->output_section
;
3846 indx
= elf_section_data (osec
)->dynindx
;
3849 struct elf_link_hash_table
*htab
;
3850 htab
= elf_hash_table (info
);
3851 osec
= htab
->text_index_section
;
3852 indx
= elf_section_data (osec
)->dynindx
;
3854 BFD_ASSERT (indx
!= 0);
3857 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
3861 sreloc
= elf_section_data (input_section
)->sreloc
;
3865 loc
= sreloc
->contents
;
3866 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3867 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3869 /* This reloc will be computed at runtime, so there's no
3870 need to do anything now, except for R_68K_32
3871 relocations that have been turned into
3879 case R_68K_GNU_VTINHERIT
:
3880 case R_68K_GNU_VTENTRY
:
3881 /* These are no-ops in the end. */
3888 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3889 because such sections are not SEC_ALLOC and thus ld.so will
3890 not process them. */
3891 if (unresolved_reloc
3892 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
3894 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3895 rel
->r_offset
) != (bfd_vma
) -1)
3898 /* xgettext:c-format */
3899 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3904 h
->root
.root
.string
);
3908 if (r_symndx
!= STN_UNDEF
3909 && r_type
!= R_68K_NONE
3911 || h
->root
.type
== bfd_link_hash_defined
3912 || h
->root
.type
== bfd_link_hash_defweak
))
3916 sym_type
= (sym
!= NULL
) ? ELF32_ST_TYPE (sym
->st_info
) : h
->type
;
3918 if (elf_m68k_reloc_tls_p (r_type
) != (sym_type
== STT_TLS
))
3923 name
= h
->root
.root
.string
;
3926 name
= (bfd_elf_string_from_elf_section
3927 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
3928 if (name
== NULL
|| *name
== '\0')
3929 name
= bfd_section_name (input_bfd
, sec
);
3933 ((sym_type
== STT_TLS
3934 /* xgettext:c-format */
3935 ? _("%B(%A+%#Lx): %s used with TLS symbol %s")
3936 /* xgettext:c-format */
3937 : _("%B(%A+%#Lx): %s used with non-TLS symbol %s")),
3946 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3947 contents
, rel
->r_offset
,
3948 relocation
, rel
->r_addend
);
3950 if (r
!= bfd_reloc_ok
)
3955 name
= h
->root
.root
.string
;
3958 name
= bfd_elf_string_from_elf_section (input_bfd
,
3959 symtab_hdr
->sh_link
,
3964 name
= bfd_section_name (input_bfd
, sec
);
3967 if (r
== bfd_reloc_overflow
)
3968 (*info
->callbacks
->reloc_overflow
)
3969 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3970 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3974 /* xgettext:c-format */
3975 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
3976 input_bfd
, input_section
,
3977 rel
->r_offset
, name
, (int) r
);
3986 /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET
3987 into section SEC. */
3990 elf_m68k_install_pc32 (asection
*sec
, bfd_vma offset
, bfd_vma value
)
3992 /* Make VALUE PC-relative. */
3993 value
-= sec
->output_section
->vma
+ offset
;
3995 /* Apply any in-place addend. */
3996 value
+= bfd_get_32 (sec
->owner
, sec
->contents
+ offset
);
3998 bfd_put_32 (sec
->owner
, value
, sec
->contents
+ offset
);
4001 /* Finish up dynamic symbol handling. We set the contents of various
4002 dynamic sections here. */
4005 elf_m68k_finish_dynamic_symbol (bfd
*output_bfd
,
4006 struct bfd_link_info
*info
,
4007 struct elf_link_hash_entry
*h
,
4008 Elf_Internal_Sym
*sym
)
4012 dynobj
= elf_hash_table (info
)->dynobj
;
4014 if (h
->plt
.offset
!= (bfd_vma
) -1)
4016 const struct elf_m68k_plt_info
*plt_info
;
4022 Elf_Internal_Rela rela
;
4025 /* This symbol has an entry in the procedure linkage table. Set
4028 BFD_ASSERT (h
->dynindx
!= -1);
4030 plt_info
= elf_m68k_hash_table (info
)->plt_info
;
4031 splt
= elf_hash_table (info
)->splt
;
4032 sgot
= elf_hash_table (info
)->sgotplt
;
4033 srela
= elf_hash_table (info
)->srelplt
;
4034 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
4036 /* Get the index in the procedure linkage table which
4037 corresponds to this symbol. This is the index of this symbol
4038 in all the symbols for which we are making plt entries. The
4039 first entry in the procedure linkage table is reserved. */
4040 plt_index
= (h
->plt
.offset
/ plt_info
->size
) - 1;
4042 /* Get the offset into the .got table of the entry that
4043 corresponds to this function. Each .got entry is 4 bytes.
4044 The first three are reserved. */
4045 got_offset
= (plt_index
+ 3) * 4;
4047 memcpy (splt
->contents
+ h
->plt
.offset
,
4048 plt_info
->symbol_entry
,
4051 elf_m68k_install_pc32 (splt
, h
->plt
.offset
+ plt_info
->symbol_relocs
.got
,
4052 (sgot
->output_section
->vma
4053 + sgot
->output_offset
4056 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
4059 + plt_info
->symbol_resolve_entry
+ 2);
4061 elf_m68k_install_pc32 (splt
, h
->plt
.offset
+ plt_info
->symbol_relocs
.plt
,
4062 splt
->output_section
->vma
);
4064 /* Fill in the entry in the global offset table. */
4065 bfd_put_32 (output_bfd
,
4066 (splt
->output_section
->vma
4067 + splt
->output_offset
4069 + plt_info
->symbol_resolve_entry
),
4070 sgot
->contents
+ got_offset
);
4072 /* Fill in the entry in the .rela.plt section. */
4073 rela
.r_offset
= (sgot
->output_section
->vma
4074 + sgot
->output_offset
4076 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_JMP_SLOT
);
4078 loc
= srela
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
4079 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
4081 if (!h
->def_regular
)
4083 /* Mark the symbol as undefined, rather than as defined in
4084 the .plt section. Leave the value alone. */
4085 sym
->st_shndx
= SHN_UNDEF
;
4089 if (elf_m68k_hash_entry (h
)->glist
!= NULL
)
4093 struct elf_m68k_got_entry
*got_entry
;
4095 /* This symbol has an entry in the global offset table. Set it
4098 sgot
= elf_hash_table (info
)->sgot
;
4099 srela
= elf_hash_table (info
)->srelgot
;
4100 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
4102 got_entry
= elf_m68k_hash_entry (h
)->glist
;
4104 while (got_entry
!= NULL
)
4106 enum elf_m68k_reloc_type r_type
;
4107 bfd_vma got_entry_offset
;
4109 r_type
= got_entry
->key_
.type
;
4110 got_entry_offset
= got_entry
->u
.s2
.offset
&~ (bfd_vma
) 1;
4112 /* If this is a -Bsymbolic link, and the symbol is defined
4113 locally, we just want to emit a RELATIVE reloc. Likewise if
4114 the symbol was forced to be local because of a version file.
4115 The entry in the global offset table already have been
4116 initialized in the relocate_section function. */
4117 if (bfd_link_pic (info
)
4118 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4122 relocation
= bfd_get_signed_32 (output_bfd
,
4124 + got_entry_offset
));
4127 switch (elf_m68k_reloc_got_type (r_type
))
4130 case R_68K_TLS_LDM32
:
4133 case R_68K_TLS_GD32
:
4134 /* The value for this relocation is actually put in
4135 the second GOT slot. */
4136 relocation
= bfd_get_signed_32 (output_bfd
,
4138 + got_entry_offset
+ 4));
4139 relocation
+= dtpoff_base (info
);
4142 case R_68K_TLS_IE32
:
4143 relocation
+= tpoff_base (info
);
4150 elf_m68k_init_got_entry_local_shared (info
,
4160 Elf_Internal_Rela rela
;
4162 /* Put zeros to GOT slots that will be initialized
4167 n_slots
= elf_m68k_reloc_got_n_slots (got_entry
->key_
.type
);
4169 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
4170 (sgot
->contents
+ got_entry_offset
4175 rela
.r_offset
= (sgot
->output_section
->vma
4176 + sgot
->output_offset
4177 + got_entry_offset
);
4179 switch (elf_m68k_reloc_got_type (r_type
))
4182 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_GLOB_DAT
);
4183 elf_m68k_install_rela (output_bfd
, srela
, &rela
);
4186 case R_68K_TLS_GD32
:
4187 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_TLS_DTPMOD32
);
4188 elf_m68k_install_rela (output_bfd
, srela
, &rela
);
4191 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_TLS_DTPREL32
);
4192 elf_m68k_install_rela (output_bfd
, srela
, &rela
);
4195 case R_68K_TLS_IE32
:
4196 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_TLS_TPREL32
);
4197 elf_m68k_install_rela (output_bfd
, srela
, &rela
);
4206 got_entry
= got_entry
->u
.s2
.next
;
4213 Elf_Internal_Rela rela
;
4216 /* This symbol needs a copy reloc. Set it up. */
4218 BFD_ASSERT (h
->dynindx
!= -1
4219 && (h
->root
.type
== bfd_link_hash_defined
4220 || h
->root
.type
== bfd_link_hash_defweak
));
4222 s
= bfd_get_linker_section (dynobj
, ".rela.bss");
4223 BFD_ASSERT (s
!= NULL
);
4225 rela
.r_offset
= (h
->root
.u
.def
.value
4226 + h
->root
.u
.def
.section
->output_section
->vma
4227 + h
->root
.u
.def
.section
->output_offset
);
4228 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_COPY
);
4230 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4231 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
4237 /* Finish up the dynamic sections. */
4240 elf_m68k_finish_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
4246 dynobj
= elf_hash_table (info
)->dynobj
;
4248 sgot
= elf_hash_table (info
)->sgotplt
;
4249 BFD_ASSERT (sgot
!= NULL
);
4250 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4252 if (elf_hash_table (info
)->dynamic_sections_created
)
4255 Elf32_External_Dyn
*dyncon
, *dynconend
;
4257 splt
= elf_hash_table (info
)->splt
;
4258 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
4260 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4261 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4262 for (; dyncon
< dynconend
; dyncon
++)
4264 Elf_Internal_Dyn dyn
;
4267 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4275 s
= elf_hash_table (info
)->sgotplt
;
4278 s
= elf_hash_table (info
)->srelplt
;
4280 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
4281 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4285 s
= elf_hash_table (info
)->srelplt
;
4286 dyn
.d_un
.d_val
= s
->size
;
4287 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4292 /* Fill in the first entry in the procedure linkage table. */
4295 const struct elf_m68k_plt_info
*plt_info
;
4297 plt_info
= elf_m68k_hash_table (info
)->plt_info
;
4298 memcpy (splt
->contents
, plt_info
->plt0_entry
, plt_info
->size
);
4300 elf_m68k_install_pc32 (splt
, plt_info
->plt0_relocs
.got4
,
4301 (sgot
->output_section
->vma
4302 + sgot
->output_offset
4305 elf_m68k_install_pc32 (splt
, plt_info
->plt0_relocs
.got8
,
4306 (sgot
->output_section
->vma
4307 + sgot
->output_offset
4310 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
4315 /* Fill in the first three entries in the global offset table. */
4319 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
4321 bfd_put_32 (output_bfd
,
4322 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
4324 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
4325 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
4328 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
4333 /* Given a .data section and a .emreloc in-memory section, store
4334 relocation information into the .emreloc section which can be
4335 used at runtime to relocate the section. This is called by the
4336 linker when the --embedded-relocs switch is used. This is called
4337 after the add_symbols entry point has been called for all the
4338 objects, and before the final_link entry point is called. */
4341 bfd_m68k_elf32_create_embedded_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4342 asection
*datasec
, asection
*relsec
,
4345 Elf_Internal_Shdr
*symtab_hdr
;
4346 Elf_Internal_Sym
*isymbuf
= NULL
;
4347 Elf_Internal_Rela
*internal_relocs
= NULL
;
4348 Elf_Internal_Rela
*irel
, *irelend
;
4352 BFD_ASSERT (! bfd_link_relocatable (info
));
4356 if (datasec
->reloc_count
== 0)
4359 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4361 /* Get a copy of the native relocations. */
4362 internal_relocs
= (_bfd_elf_link_read_relocs
4363 (abfd
, datasec
, NULL
, (Elf_Internal_Rela
*) NULL
,
4364 info
->keep_memory
));
4365 if (internal_relocs
== NULL
)
4368 amt
= (bfd_size_type
) datasec
->reloc_count
* 12;
4369 relsec
->contents
= (bfd_byte
*) bfd_alloc (abfd
, amt
);
4370 if (relsec
->contents
== NULL
)
4373 p
= relsec
->contents
;
4375 irelend
= internal_relocs
+ datasec
->reloc_count
;
4376 for (irel
= internal_relocs
; irel
< irelend
; irel
++, p
+= 12)
4378 asection
*targetsec
;
4380 /* We are going to write a four byte longword into the runtime
4381 reloc section. The longword will be the address in the data
4382 section which must be relocated. It is followed by the name
4383 of the target section NUL-padded or truncated to 8
4386 /* We can only relocate absolute longword relocs at run time. */
4387 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_68K_32
)
4389 *errmsg
= _("unsupported reloc type");
4390 bfd_set_error (bfd_error_bad_value
);
4394 /* Get the target section referred to by the reloc. */
4395 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
4397 /* A local symbol. */
4398 Elf_Internal_Sym
*isym
;
4400 /* Read this BFD's local symbols if we haven't done so already. */
4401 if (isymbuf
== NULL
)
4403 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4404 if (isymbuf
== NULL
)
4405 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
4406 symtab_hdr
->sh_info
, 0,
4408 if (isymbuf
== NULL
)
4412 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
4413 targetsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4418 struct elf_link_hash_entry
*h
;
4420 /* An external symbol. */
4421 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
4422 h
= elf_sym_hashes (abfd
)[indx
];
4423 BFD_ASSERT (h
!= NULL
);
4424 if (h
->root
.type
== bfd_link_hash_defined
4425 || h
->root
.type
== bfd_link_hash_defweak
)
4426 targetsec
= h
->root
.u
.def
.section
;
4431 bfd_put_32 (abfd
, irel
->r_offset
+ datasec
->output_offset
, p
);
4432 memset (p
+ 4, 0, 8);
4433 if (targetsec
!= NULL
)
4434 strncpy ((char *) p
+ 4, targetsec
->output_section
->name
, 8);
4437 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
4439 if (internal_relocs
!= NULL
4440 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
4441 free (internal_relocs
);
4445 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
4447 if (internal_relocs
!= NULL
4448 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
4449 free (internal_relocs
);
4453 /* Set target options. */
4456 bfd_elf_m68k_set_target_options (struct bfd_link_info
*info
, int got_handling
)
4458 struct elf_m68k_link_hash_table
*htab
;
4459 bfd_boolean use_neg_got_offsets_p
;
4460 bfd_boolean allow_multigot_p
;
4461 bfd_boolean local_gp_p
;
4463 switch (got_handling
)
4468 use_neg_got_offsets_p
= FALSE
;
4469 allow_multigot_p
= FALSE
;
4473 /* --got=negative. */
4475 use_neg_got_offsets_p
= TRUE
;
4476 allow_multigot_p
= FALSE
;
4480 /* --got=multigot. */
4482 use_neg_got_offsets_p
= TRUE
;
4483 allow_multigot_p
= TRUE
;
4491 htab
= elf_m68k_hash_table (info
);
4494 htab
->local_gp_p
= local_gp_p
;
4495 htab
->use_neg_got_offsets_p
= use_neg_got_offsets_p
;
4496 htab
->allow_multigot_p
= allow_multigot_p
;
4500 static enum elf_reloc_type_class
4501 elf32_m68k_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4502 const asection
*rel_sec ATTRIBUTE_UNUSED
,
4503 const Elf_Internal_Rela
*rela
)
4505 switch ((int) ELF32_R_TYPE (rela
->r_info
))
4507 case R_68K_RELATIVE
:
4508 return reloc_class_relative
;
4509 case R_68K_JMP_SLOT
:
4510 return reloc_class_plt
;
4512 return reloc_class_copy
;
4514 return reloc_class_normal
;
4518 /* Return address for Ith PLT stub in section PLT, for relocation REL
4519 or (bfd_vma) -1 if it should not be included. */
4522 elf_m68k_plt_sym_val (bfd_vma i
, const asection
*plt
,
4523 const arelent
*rel ATTRIBUTE_UNUSED
)
4525 return plt
->vma
+ (i
+ 1) * elf_m68k_get_plt_info (plt
->owner
)->size
;
4528 /* Support for core dump NOTE sections. */
4531 elf_m68k_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
4536 switch (note
->descsz
)
4541 case 154: /* Linux/m68k */
4543 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
4546 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 22);
4555 /* Make a ".reg/999" section. */
4556 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
4557 size
, note
->descpos
+ offset
);
4561 elf_m68k_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
4563 switch (note
->descsz
)
4568 case 124: /* Linux/m68k elf_prpsinfo. */
4569 elf_tdata (abfd
)->core
->pid
4570 = bfd_get_32 (abfd
, note
->descdata
+ 12);
4571 elf_tdata (abfd
)->core
->program
4572 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
4573 elf_tdata (abfd
)->core
->command
4574 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
4577 /* Note that for some reason, a spurious space is tacked
4578 onto the end of the args in some (at least one anyway)
4579 implementations, so strip it off if it exists. */
4581 char *command
= elf_tdata (abfd
)->core
->command
;
4582 int n
= strlen (command
);
4584 if (n
> 0 && command
[n
- 1] == ' ')
4585 command
[n
- 1] = '\0';
4591 /* Hook called by the linker routine which adds symbols from an object
4595 elf_m68k_add_symbol_hook (bfd
*abfd
,
4596 struct bfd_link_info
*info
,
4597 Elf_Internal_Sym
*sym
,
4598 const char **namep ATTRIBUTE_UNUSED
,
4599 flagword
*flagsp ATTRIBUTE_UNUSED
,
4600 asection
**secp ATTRIBUTE_UNUSED
,
4601 bfd_vma
*valp ATTRIBUTE_UNUSED
)
4603 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
4604 && (abfd
->flags
& DYNAMIC
) == 0
4605 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4606 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4611 #define TARGET_BIG_SYM m68k_elf32_vec
4612 #define TARGET_BIG_NAME "elf32-m68k"
4613 #define ELF_MACHINE_CODE EM_68K
4614 #define ELF_MAXPAGESIZE 0x2000
4615 #define elf_backend_create_dynamic_sections \
4616 _bfd_elf_create_dynamic_sections
4617 #define bfd_elf32_bfd_link_hash_table_create \
4618 elf_m68k_link_hash_table_create
4619 #define bfd_elf32_bfd_final_link bfd_elf_final_link
4621 #define elf_backend_check_relocs elf_m68k_check_relocs
4622 #define elf_backend_always_size_sections \
4623 elf_m68k_always_size_sections
4624 #define elf_backend_adjust_dynamic_symbol \
4625 elf_m68k_adjust_dynamic_symbol
4626 #define elf_backend_size_dynamic_sections \
4627 elf_m68k_size_dynamic_sections
4628 #define elf_backend_final_write_processing elf_m68k_final_write_processing
4629 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4630 #define elf_backend_relocate_section elf_m68k_relocate_section
4631 #define elf_backend_finish_dynamic_symbol \
4632 elf_m68k_finish_dynamic_symbol
4633 #define elf_backend_finish_dynamic_sections \
4634 elf_m68k_finish_dynamic_sections
4635 #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
4636 #define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol
4637 #define bfd_elf32_bfd_merge_private_bfd_data \
4638 elf32_m68k_merge_private_bfd_data
4639 #define bfd_elf32_bfd_set_private_flags \
4640 elf32_m68k_set_private_flags
4641 #define bfd_elf32_bfd_print_private_bfd_data \
4642 elf32_m68k_print_private_bfd_data
4643 #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
4644 #define elf_backend_plt_sym_val elf_m68k_plt_sym_val
4645 #define elf_backend_object_p elf32_m68k_object_p
4646 #define elf_backend_grok_prstatus elf_m68k_grok_prstatus
4647 #define elf_backend_grok_psinfo elf_m68k_grok_psinfo
4648 #define elf_backend_add_symbol_hook elf_m68k_add_symbol_hook
4650 #define elf_backend_can_gc_sections 1
4651 #define elf_backend_can_refcount 1
4652 #define elf_backend_want_got_plt 1
4653 #define elf_backend_plt_readonly 1
4654 #define elf_backend_want_plt_sym 0
4655 #define elf_backend_got_header_size 12
4656 #define elf_backend_rela_normal 1
4657 #define elf_backend_dtrel_excludes_plt 1
4659 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
4661 #include "elf32-target.h"