1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001 Free Software Foundation, Inc.
3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
28 static reloc_howto_type
*elf_s390_reloc_type_lookup
29 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
30 static void elf_s390_info_to_howto
31 PARAMS ((bfd
*, arelent
*, Elf_Internal_Rela
*));
32 static boolean elf_s390_is_local_label_name
PARAMS ((bfd
*, const char *));
33 static struct bfd_hash_entry
*elf_s390_link_hash_newfunc
34 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
35 static struct bfd_link_hash_table
*elf_s390_link_hash_table_create
37 static boolean elf_s390_check_relocs
38 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
39 const Elf_Internal_Rela
*));
40 static asection
*elf_s390_gc_mark_hook
41 PARAMS ((bfd
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
42 struct elf_link_hash_entry
*, Elf_Internal_Sym
*sym
));
43 static boolean elf_s390_gc_sweep_hook
44 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
45 const Elf_Internal_Rela
*));
46 static boolean elf_s390_adjust_dynamic_symbol
47 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
48 static boolean elf_s390_size_dynamic_sections
49 PARAMS ((bfd
*, struct bfd_link_info
*));
50 static boolean elf_s390_relocate_section
51 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
52 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
53 static boolean elf_s390_finish_dynamic_symbol
54 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
56 static boolean elf_s390_finish_dynamic_sections
57 PARAMS ((bfd
*, struct bfd_link_info
*));
58 static boolean elf_s390_object_p
PARAMS ((bfd
*));
59 static enum elf_reloc_type_class elf_s390_reloc_type_class
60 PARAMS ((const Elf_Internal_Rela
*));
62 #define USE_RELA 1 /* We want RELA relocations, not REL. */
66 /* The relocation "howto" table. */
68 static reloc_howto_type elf_howto_table
[] =
70 HOWTO (R_390_NONE
, /* type */
72 0, /* size (0 = byte, 1 = short, 2 = long) */
74 false, /* pc_relative */
76 complain_overflow_dont
, /* complain_on_overflow */
77 bfd_elf_generic_reloc
, /* special_function */
78 "R_390_NONE", /* name */
79 false, /* partial_inplace */
82 false), /* pcrel_offset */
84 HOWTO(R_390_8
, 0, 0, 8, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_8", false, 0,0x000000ff, false),
85 HOWTO(R_390_12
, 0, 1, 12, false, 0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_390_12", false, 0,0x00000fff, false),
86 HOWTO(R_390_16
, 0, 1, 16, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_16", false, 0,0x0000ffff, false),
87 HOWTO(R_390_32
, 0, 2, 32, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_32", false, 0,0xffffffff, false),
88 HOWTO(R_390_PC32
, 0, 2, 32, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_PC32", false, 0,0xffffffff, true),
89 HOWTO(R_390_GOT12
, 0, 1, 12, false, 0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_390_GOT12", false, 0,0x00000fff, false),
90 HOWTO(R_390_GOT32
, 0, 2, 32, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_GOT32", false, 0,0xffffffff, false),
91 HOWTO(R_390_PLT32
, 0, 2, 32, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_PLT32", false, 0,0xffffffff, true),
92 HOWTO(R_390_COPY
, 0, 2, 32, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_COPY", false, 0,0xffffffff, false),
93 HOWTO(R_390_GLOB_DAT
, 0, 2, 32, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_GLOB_DAT",false, 0,0xffffffff, false),
94 HOWTO(R_390_JMP_SLOT
, 0, 2, 32, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_JMP_SLOT",false, 0,0xffffffff, false),
95 HOWTO(R_390_RELATIVE
, 0, 2, 32, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_RELATIVE",false, 0,0xffffffff, false),
96 HOWTO(R_390_GOTOFF
, 0, 2, 32, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_GOTOFF", false, 0,0xffffffff, false),
97 HOWTO(R_390_GOTPC
, 0, 2, 32, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_GOTPC", false, 0,0xffffffff, true),
98 HOWTO(R_390_GOT16
, 0, 1, 16, false, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_GOT16", false, 0,0x0000ffff, false),
99 HOWTO(R_390_PC16
, 0, 1, 16, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_PC16", false, 0,0x0000ffff, true),
100 HOWTO(R_390_PC16DBL
, 1, 1, 16, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_PC16DBL", false, 0,0x0000ffff, true),
101 HOWTO(R_390_PLT16DBL
, 1, 1, 16, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_390_PLT16DBL", false, 0,0x0000ffff, true),
104 /* GNU extension to record C++ vtable hierarchy. */
105 static reloc_howto_type elf32_s390_vtinherit_howto
=
106 HOWTO (R_390_GNU_VTINHERIT
, 0,2,0,false,0,complain_overflow_dont
, NULL
, "R_390_GNU_VTINHERIT", false,0, 0, false);
107 static reloc_howto_type elf32_s390_vtentry_howto
=
108 HOWTO (R_390_GNU_VTENTRY
, 0,2,0,false,0,complain_overflow_dont
, _bfd_elf_rel_vtable_reloc_fn
,"R_390_GNU_VTENTRY", false,0,0, false);
110 static reloc_howto_type
*
111 elf_s390_reloc_type_lookup (abfd
, code
)
112 bfd
*abfd ATTRIBUTE_UNUSED
;
113 bfd_reloc_code_real_type code
;
117 return &elf_howto_table
[(int) R_390_NONE
];
119 return &elf_howto_table
[(int) R_390_8
];
120 case BFD_RELOC_390_12
:
121 return &elf_howto_table
[(int) R_390_12
];
123 return &elf_howto_table
[(int) R_390_16
];
125 return &elf_howto_table
[(int) R_390_32
];
127 return &elf_howto_table
[(int) R_390_32
];
128 case BFD_RELOC_32_PCREL
:
129 return &elf_howto_table
[(int) R_390_PC32
];
130 case BFD_RELOC_390_GOT12
:
131 return &elf_howto_table
[(int) R_390_GOT12
];
132 case BFD_RELOC_32_GOT_PCREL
:
133 return &elf_howto_table
[(int) R_390_GOT32
];
134 case BFD_RELOC_390_PLT32
:
135 return &elf_howto_table
[(int) R_390_PLT32
];
136 case BFD_RELOC_390_COPY
:
137 return &elf_howto_table
[(int) R_390_COPY
];
138 case BFD_RELOC_390_GLOB_DAT
:
139 return &elf_howto_table
[(int) R_390_GLOB_DAT
];
140 case BFD_RELOC_390_JMP_SLOT
:
141 return &elf_howto_table
[(int) R_390_JMP_SLOT
];
142 case BFD_RELOC_390_RELATIVE
:
143 return &elf_howto_table
[(int) R_390_RELATIVE
];
144 case BFD_RELOC_32_GOTOFF
:
145 return &elf_howto_table
[(int) R_390_GOTOFF
];
146 case BFD_RELOC_390_GOTPC
:
147 return &elf_howto_table
[(int) R_390_GOTPC
];
148 case BFD_RELOC_390_GOT16
:
149 return &elf_howto_table
[(int) R_390_GOT16
];
150 case BFD_RELOC_16_PCREL
:
151 return &elf_howto_table
[(int) R_390_PC16
];
152 case BFD_RELOC_390_PC16DBL
:
153 return &elf_howto_table
[(int) R_390_PC16DBL
];
154 case BFD_RELOC_390_PLT16DBL
:
155 return &elf_howto_table
[(int) R_390_PLT16DBL
];
156 case BFD_RELOC_VTABLE_INHERIT
:
157 return &elf32_s390_vtinherit_howto
;
158 case BFD_RELOC_VTABLE_ENTRY
:
159 return &elf32_s390_vtentry_howto
;
166 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
167 and elf32-s390.c has its own copy. */
170 elf_s390_info_to_howto (abfd
, cache_ptr
, dst
)
171 bfd
*abfd ATTRIBUTE_UNUSED
;
173 Elf_Internal_Rela
*dst
;
175 switch (ELF32_R_TYPE(dst
->r_info
))
177 case R_390_GNU_VTINHERIT
:
178 cache_ptr
->howto
= &elf32_s390_vtinherit_howto
;
181 case R_390_GNU_VTENTRY
:
182 cache_ptr
->howto
= &elf32_s390_vtentry_howto
;
186 BFD_ASSERT (ELF32_R_TYPE(dst
->r_info
) < (unsigned int) R_390_max
);
187 cache_ptr
->howto
= &elf_howto_table
[ELF32_R_TYPE(dst
->r_info
)];
192 elf_s390_is_local_label_name (abfd
, name
)
196 if (name
[0] == '.' && (name
[1] == 'X' || name
[1] == 'L'))
199 return _bfd_elf_is_local_label_name (abfd
, name
);
202 /* Functions for the 390 ELF linker. */
204 /* The name of the dynamic interpreter. This is put in the .interp
207 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
209 /* The nop opcode we use. */
211 #define s390_NOP 0x07070707
214 /* The size in bytes of the first entry in the procedure linkage table. */
215 #define PLT_FIRST_ENTRY_SIZE 32
216 /* The size in bytes of an entry in the procedure linkage table. */
217 #define PLT_ENTRY_SIZE 32
219 #define GOT_ENTRY_SIZE 4
221 /* The first three entries in a procedure linkage table are reserved,
222 and the initial contents are unimportant (we zero them out).
223 Subsequent entries look like this. See the SVR4 ABI 386
224 supplement to see how this works. */
226 /* For the s390, simple addr offset can only be 0 - 4096.
227 To use the full 2 GB address space, several instructions
228 are needed to load an address in a register and execute
229 a branch( or just saving the address)
231 Furthermore, only r 0 and 1 are free to use!!! */
233 /* The first 3 words in the GOT are then reserved.
234 Word 0 is the address of the dynamic table.
235 Word 1 is a pointer to a structure describing the object
236 Word 2 is used to point to the loader entry address.
238 The code for position independand PLT entries looks like this:
240 r12 holds addr of the current GOT at entry to the PLT
242 The GOT holds the address in the PLT to be executed.
243 The loader then gets:
244 24(15) = Pointer to the structure describing the object.
245 28(15) = Offset in symbol table
247 The loader must then find the module where the function is
248 and insert the address in the GOT.
250 Note: 390 can only address +- 64 K relative.
251 We check if offset > 65536, then make a relative branch -64xxx
252 back to a previous defined branch
254 PLT1: BASR 1,0 # 2 bytes
255 L 1,22(1) # 4 bytes Load offset in GOT in r 1
256 L 1,(1,12) # 4 bytes Load address from GOT in r1
257 BCR 15,1 # 2 bytes Jump to address
258 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
259 L 1,14(1) # 4 bytes Load offset in symol table in r1
260 BRC 15,-x # 4 bytes Jump to start of PLT
261 .word 0 # 2 bytes filler
262 .long ? # 4 bytes offset in GOT
263 .long ? # 4 bytes offset into symbol table
265 This was the general case. There are two additional, optimizes PLT
266 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
267 First the one for GOT offsets < 4096:
269 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
270 BCR 15,1 # 2 bytes Jump to address
271 .word 0,0,0 # 6 bytes filler
272 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
273 L 1,14(1) # 4 bytes Load offset in symbol table in r1
274 BRC 15,-x # 4 bytes Jump to start of PLT
275 .word 0,0,0 # 6 bytes filler
276 .long ? # 4 bytes offset into symbol table
278 Second the one for GOT offsets < 32768:
280 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
281 L 1,(1,12) # 4 bytes Load address from GOT to r1
282 BCR 15,1 # 2 bytes Jump to address
283 .word 0 # 2 bytes filler
284 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
285 L 1,14(1) # 4 bytes Load offset in symbol table in r1
286 BRC 15,-x # 4 bytes Jump to start of PLT
287 .word 0,0,0 # 6 bytes filler
288 .long ? # 4 bytes offset into symbol table
290 Total = 32 bytes per PLT entry
292 The code for static build PLT entries looks like this:
294 PLT1: BASR 1,0 # 2 bytes
295 L 1,22(1) # 4 bytes Load address of GOT entry
296 L 1,0(0,1) # 4 bytes Load address from GOT in r1
297 BCR 15,1 # 2 bytes Jump to address
298 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
299 L 1,14(1) # 4 bytes Load offset in symbol table in r1
300 BRC 15,-x # 4 bytes Jump to start of PLT
301 .word 0 # 2 bytes filler
302 .long ? # 4 bytes address of GOT entry
303 .long ? # 4 bytes offset into symbol table */
305 #define PLT_PIC_ENTRY_WORD0 0x0d105810
306 #define PLT_PIC_ENTRY_WORD1 0x10165811
307 #define PLT_PIC_ENTRY_WORD2 0xc00007f1
308 #define PLT_PIC_ENTRY_WORD3 0x0d105810
309 #define PLT_PIC_ENTRY_WORD4 0x100ea7f4
311 #define PLT_PIC12_ENTRY_WORD0 0x5810c000
312 #define PLT_PIC12_ENTRY_WORD1 0x07f10000
313 #define PLT_PIC12_ENTRY_WORD2 0x00000000
314 #define PLT_PIC12_ENTRY_WORD3 0x0d105810
315 #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
317 #define PLT_PIC16_ENTRY_WORD0 0xa7180000
318 #define PLT_PIC16_ENTRY_WORD1 0x5811c000
319 #define PLT_PIC16_ENTRY_WORD2 0x07f10000
320 #define PLT_PIC16_ENTRY_WORD3 0x0d105810
321 #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
323 #define PLT_ENTRY_WORD0 0x0d105810
324 #define PLT_ENTRY_WORD1 0x10165810
325 #define PLT_ENTRY_WORD2 0x100007f1
326 #define PLT_ENTRY_WORD3 0x0d105810
327 #define PLT_ENTRY_WORD4 0x100ea7f4
329 /* The first PLT entry pushes the offset into the symbol table
330 from R1 onto the stack at 8(15) and the loader object info
331 at 12(15), loads the loader address in R1 and jumps to it. */
333 /* The first entry in the PLT for PIC code:
336 ST 1,28(15) # R1 has offset into symbol table
337 L 1,4(12) # Get loader ino(object struct address)
338 ST 1,24(15) # Store address
339 L 1,8(12) # Entry address of loader in R1
340 BR 1 # Jump to loader
342 The first entry in the PLT for static code:
345 ST 1,28(15) # R1 has offset into symbol table
347 L 1,18(0,1) # Get address of GOT
348 MVC 24(4,15),4(1) # Move loader ino to stack
349 L 1,8(1) # Get address of loader
350 BR 1 # Jump to loader
352 .long got # address of GOT */
354 #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
355 #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
356 #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
357 #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
358 #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
360 #define PLT_FIRST_ENTRY_WORD0 0x5010f01c
361 #define PLT_FIRST_ENTRY_WORD1 0x0d105810
362 #define PLT_FIRST_ENTRY_WORD2 0x1012D203
363 #define PLT_FIRST_ENTRY_WORD3 0xf0181004
364 #define PLT_FIRST_ENTRY_WORD4 0x58101008
365 #define PLT_FIRST_ENTRY_WORD5 0x07f10000
367 /* The s390 linker needs to keep track of the number of relocs that it
368 decides to copy in check_relocs for each symbol. This is so that
369 it can discard PC relative relocs if it doesn't need them when
370 linking with -Bsymbolic. We store the information in a field
371 extending the regular ELF linker hash table. */
373 /* This structure keeps track of the number of PC relative relocs we
374 have copied for a given symbol. */
376 struct elf_s390_pcrel_relocs_copied
379 struct elf_s390_pcrel_relocs_copied
*next
;
380 /* A section in dynobj. */
382 /* Number of relocs copied in this section. */
386 /* s390 ELF linker hash entry. */
388 struct elf_s390_link_hash_entry
390 struct elf_link_hash_entry root
;
392 /* Number of PC relative relocs copied for this symbol. */
393 struct elf_s390_pcrel_relocs_copied
*pcrel_relocs_copied
;
396 /* s390 ELF linker hash table. */
398 struct elf_s390_link_hash_table
400 struct elf_link_hash_table root
;
403 /* Declare this now that the above structures are defined. */
405 static boolean elf_s390_discard_copies
406 PARAMS ((struct elf_s390_link_hash_entry
*, PTR
));
408 /* Traverse an s390 ELF linker hash table. */
410 #define elf_s390_link_hash_traverse(table, func, info) \
411 (elf_link_hash_traverse \
413 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
416 /* Get the s390 ELF linker hash table from a link_info structure. */
418 #define elf_s390_hash_table(p) \
419 ((struct elf_s390_link_hash_table *) ((p)->hash))
421 /* Create an entry in an s390 ELF linker hash table. */
423 static struct bfd_hash_entry
*
424 elf_s390_link_hash_newfunc (entry
, table
, string
)
425 struct bfd_hash_entry
*entry
;
426 struct bfd_hash_table
*table
;
429 struct elf_s390_link_hash_entry
*ret
=
430 (struct elf_s390_link_hash_entry
*) entry
;
432 /* Allocate the structure if it has not already been allocated by a
434 if (ret
== (struct elf_s390_link_hash_entry
*) NULL
)
435 ret
= ((struct elf_s390_link_hash_entry
*)
436 bfd_hash_allocate (table
,
437 sizeof (struct elf_s390_link_hash_entry
)));
438 if (ret
== (struct elf_s390_link_hash_entry
*) NULL
)
439 return (struct bfd_hash_entry
*) ret
;
441 /* Call the allocation method of the superclass. */
442 ret
= ((struct elf_s390_link_hash_entry
*)
443 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
445 if (ret
!= (struct elf_s390_link_hash_entry
*) NULL
)
447 ret
->pcrel_relocs_copied
= NULL
;
450 return (struct bfd_hash_entry
*) ret
;
453 /* Create an s390 ELF linker hash table. */
455 static struct bfd_link_hash_table
*
456 elf_s390_link_hash_table_create (abfd
)
459 struct elf_s390_link_hash_table
*ret
;
460 bfd_size_type amt
= sizeof (struct elf_s390_link_hash_table
);
462 ret
= (struct elf_s390_link_hash_table
*) bfd_alloc (abfd
, amt
);
463 if (ret
== (struct elf_s390_link_hash_table
*) NULL
)
466 if (! _bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
467 elf_s390_link_hash_newfunc
))
469 bfd_release (abfd
, ret
);
473 return &ret
->root
.root
;
477 /* Look through the relocs for a section during the first phase, and
478 allocate space in the global offset table or procedure linkage
482 elf_s390_check_relocs (abfd
, info
, sec
, relocs
)
484 struct bfd_link_info
*info
;
486 const Elf_Internal_Rela
*relocs
;
489 Elf_Internal_Shdr
*symtab_hdr
;
490 struct elf_link_hash_entry
**sym_hashes
;
491 bfd_signed_vma
*local_got_refcounts
;
492 const Elf_Internal_Rela
*rel
;
493 const Elf_Internal_Rela
*rel_end
;
498 if (info
->relocateable
)
501 dynobj
= elf_hash_table (info
)->dynobj
;
502 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
503 sym_hashes
= elf_sym_hashes (abfd
);
504 local_got_refcounts
= elf_local_got_offsets (abfd
);
510 rel_end
= relocs
+ sec
->reloc_count
;
511 for (rel
= relocs
; rel
< rel_end
; rel
++)
513 unsigned long r_symndx
;
514 struct elf_link_hash_entry
*h
;
516 r_symndx
= ELF32_R_SYM (rel
->r_info
);
518 if (r_symndx
< symtab_hdr
->sh_info
)
521 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
523 /* Some relocs require a global offset table. */
526 switch (ELF32_R_TYPE (rel
->r_info
))
533 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
534 if (! _bfd_elf_create_got_section (dynobj
, info
))
544 switch (ELF32_R_TYPE (rel
->r_info
))
549 /* This symbol requires a global offset table entry. */
553 sgot
= bfd_get_section_by_name (dynobj
, ".got");
554 BFD_ASSERT (sgot
!= NULL
);
559 && (h
!= NULL
|| info
->shared
))
561 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
564 srelgot
= bfd_make_section (dynobj
, ".rela.got");
566 || ! bfd_set_section_flags (dynobj
, srelgot
,
573 || ! bfd_set_section_alignment (dynobj
, srelgot
, 2))
580 if (h
->got
.refcount
== 0)
582 /* Make sure this symbol is output as a dynamic symbol. */
583 if (h
->dynindx
== -1)
585 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
589 sgot
->_raw_size
+= 4;
590 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
592 h
->got
.refcount
+= 1;
596 /* This is a global offset table entry for a local symbol. */
597 if (local_got_refcounts
== NULL
)
601 size
= symtab_hdr
->sh_info
;
602 size
*= sizeof (bfd_signed_vma
);
603 local_got_refcounts
= (bfd_signed_vma
*)
604 bfd_zalloc (abfd
, size
);
605 if (local_got_refcounts
== NULL
)
607 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
609 if (local_got_refcounts
[r_symndx
] == 0)
611 sgot
->_raw_size
+= 4;
614 /* If we are generating a shared object, we need to
615 output a R_390_RELATIVE reloc so that the dynamic
616 linker can adjust this GOT entry. */
617 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
620 local_got_refcounts
[r_symndx
] += 1;
626 /* This symbol requires a procedure linkage table entry. We
627 actually build the entry in adjust_dynamic_symbol,
628 because this might be a case of linking PIC code which is
629 never referenced by a dynamic object, in which case we
630 don't need to generate a procedure linkage table entry
633 /* If this is a local symbol, we resolve it directly without
634 creating a procedure linkage table entry. */
638 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
639 h
->plt
.refcount
+= 1;
649 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
651 /* If we are creating a shared library, and this is a reloc
652 against a global symbol, or a non PC relative reloc
653 against a local symbol, then we need to copy the reloc
654 into the shared library. However, if we are linking with
655 -Bsymbolic, we do not need to copy a reloc against a
656 global symbol which is defined in an object we are
657 including in the link (i.e., DEF_REGULAR is set). At
658 this point we have not seen all the input files, so it is
659 possible that DEF_REGULAR is not set now but will be set
660 later (it is never cleared). We account for that
661 possibility below by storing information in the
662 pcrel_relocs_copied field of the hash table entry. */
664 && (sec
->flags
& SEC_ALLOC
) != 0
665 && ((ELF32_R_TYPE (rel
->r_info
) != R_390_PC16
&&
666 ELF32_R_TYPE (rel
->r_info
) != R_390_PC16DBL
&&
667 ELF32_R_TYPE (rel
->r_info
) != R_390_PC32
)
670 || (h
->elf_link_hash_flags
671 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
673 /* When creating a shared object, we must copy these
674 reloc types into the output file. We create a reloc
675 section in dynobj and make room for this reloc. */
680 name
= (bfd_elf_string_from_elf_section
682 elf_elfheader (abfd
)->e_shstrndx
,
683 elf_section_data (sec
)->rel_hdr
.sh_name
));
687 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
688 && strcmp (bfd_get_section_name (abfd
, sec
),
691 sreloc
= bfd_get_section_by_name (dynobj
, name
);
696 sreloc
= bfd_make_section (dynobj
, name
);
697 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
698 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
699 if ((sec
->flags
& SEC_ALLOC
) != 0)
700 flags
|= SEC_ALLOC
| SEC_LOAD
;
702 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
703 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
706 if (sec
->flags
& SEC_READONLY
)
707 info
->flags
|= DF_TEXTREL
;
710 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
712 /* If we are linking with -Bsymbolic, and this is a
713 global symbol, we count the number of PC relative
714 relocations we have entered for this symbol, so that
715 we can discard them again if the symbol is later
716 defined by a regular object. Note that this function
717 is only called if we are using an elf_s390 linker
718 hash table, which means that h is really a pointer to
719 an elf_s390_link_hash_entry. */
721 && (ELF32_R_TYPE (rel
->r_info
) == R_390_PC16
||
722 ELF32_R_TYPE (rel
->r_info
) == R_390_PC16DBL
||
723 ELF32_R_TYPE (rel
->r_info
) == R_390_PC32
))
725 struct elf_s390_link_hash_entry
*eh
;
726 struct elf_s390_pcrel_relocs_copied
*p
;
728 eh
= (struct elf_s390_link_hash_entry
*) h
;
730 for (p
= eh
->pcrel_relocs_copied
; p
!= NULL
; p
= p
->next
)
731 if (p
->section
== sreloc
)
736 p
= ((struct elf_s390_pcrel_relocs_copied
*)
737 bfd_alloc (dynobj
, (bfd_size_type
) sizeof *p
));
740 p
->next
= eh
->pcrel_relocs_copied
;
741 eh
->pcrel_relocs_copied
= p
;
752 /* This relocation describes the C++ object vtable hierarchy.
753 Reconstruct it for later use during GC. */
754 case R_390_GNU_VTINHERIT
:
755 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
759 /* This relocation describes which C++ vtable entries are actually
760 used. Record for later use during GC. */
761 case R_390_GNU_VTENTRY
:
762 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
774 /* Return the section that should be marked against GC for a given
778 elf_s390_gc_mark_hook (abfd
, info
, rel
, h
, sym
)
780 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
781 Elf_Internal_Rela
*rel
;
782 struct elf_link_hash_entry
*h
;
783 Elf_Internal_Sym
*sym
;
787 switch (ELF32_R_TYPE (rel
->r_info
))
789 case R_390_GNU_VTINHERIT
:
790 case R_390_GNU_VTENTRY
:
794 switch (h
->root
.type
)
796 case bfd_link_hash_defined
:
797 case bfd_link_hash_defweak
:
798 return h
->root
.u
.def
.section
;
800 case bfd_link_hash_common
:
801 return h
->root
.u
.c
.p
->section
;
810 if (!(elf_bad_symtab (abfd
)
811 && ELF_ST_BIND (sym
->st_info
) != STB_LOCAL
)
812 && ! ((sym
->st_shndx
<= 0 || sym
->st_shndx
>= SHN_LORESERVE
)
813 && sym
->st_shndx
!= SHN_COMMON
))
815 return bfd_section_from_elf_index (abfd
, sym
->st_shndx
);
822 /* Update the got entry reference counts for the section being removed. */
825 elf_s390_gc_sweep_hook (abfd
, info
, sec
, relocs
)
826 bfd
*abfd ATTRIBUTE_UNUSED
;
827 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
828 asection
*sec ATTRIBUTE_UNUSED
;
829 const Elf_Internal_Rela
*relocs ATTRIBUTE_UNUSED
;
831 Elf_Internal_Shdr
*symtab_hdr
;
832 struct elf_link_hash_entry
**sym_hashes
;
833 bfd_signed_vma
*local_got_refcounts
;
834 const Elf_Internal_Rela
*rel
, *relend
;
835 unsigned long r_symndx
;
836 struct elf_link_hash_entry
*h
;
841 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
842 sym_hashes
= elf_sym_hashes (abfd
);
843 local_got_refcounts
= elf_local_got_refcounts (abfd
);
845 dynobj
= elf_hash_table (info
)->dynobj
;
849 sgot
= bfd_get_section_by_name (dynobj
, ".got");
850 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
852 relend
= relocs
+ sec
->reloc_count
;
853 for (rel
= relocs
; rel
< relend
; rel
++)
854 switch (ELF32_R_TYPE (rel
->r_info
))
861 r_symndx
= ELF32_R_SYM (rel
->r_info
);
862 if (r_symndx
>= symtab_hdr
->sh_info
)
864 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
865 if (h
->got
.refcount
> 0)
867 h
->got
.refcount
-= 1;
868 if (h
->got
.refcount
== 0)
870 sgot
->_raw_size
-= 4;
871 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
875 else if (local_got_refcounts
!= NULL
)
877 if (local_got_refcounts
[r_symndx
] > 0)
879 local_got_refcounts
[r_symndx
] -= 1;
880 if (local_got_refcounts
[r_symndx
] == 0)
882 sgot
->_raw_size
-= 4;
884 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
892 r_symndx
= ELF32_R_SYM (rel
->r_info
);
893 if (r_symndx
>= symtab_hdr
->sh_info
)
895 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
896 if (h
->plt
.refcount
> 0)
897 h
->plt
.refcount
-= 1;
908 /* Adjust a symbol defined by a dynamic object and referenced by a
909 regular object. The current definition is in some section of the
910 dynamic object, but we're not including those sections. We have to
911 change the definition to something the rest of the link can
915 elf_s390_adjust_dynamic_symbol (info
, h
)
916 struct bfd_link_info
*info
;
917 struct elf_link_hash_entry
*h
;
921 unsigned int power_of_two
;
923 dynobj
= elf_hash_table (info
)->dynobj
;
925 /* Make sure we know what is going on here. */
926 BFD_ASSERT (dynobj
!= NULL
927 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
928 || h
->weakdef
!= NULL
929 || ((h
->elf_link_hash_flags
930 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
931 && (h
->elf_link_hash_flags
932 & ELF_LINK_HASH_REF_REGULAR
) != 0
933 && (h
->elf_link_hash_flags
934 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
936 /* If this is a function, put it in the procedure linkage table. We
937 will fill in the contents of the procedure linkage table later
938 (although we could actually do it here). */
939 if (h
->type
== STT_FUNC
940 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
943 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) == 0
944 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) == 0)
945 || (info
->shared
&& h
->plt
.refcount
<= 0))
947 /* This case can occur if we saw a PLT32 reloc in an input
948 file, but the symbol was never referred to by a dynamic
949 object, or if all references were garbage collected. In
950 such a case, we don't actually need to build a procedure
951 linkage table, and we can just do a PC32 reloc instead. */
952 h
->plt
.offset
= (bfd_vma
) -1;
953 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
957 /* Make sure this symbol is output as a dynamic symbol. */
958 if (h
->dynindx
== -1)
960 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
964 s
= bfd_get_section_by_name (dynobj
, ".plt");
965 BFD_ASSERT (s
!= NULL
);
967 /* The first entry in .plt is reserved. */
968 if (s
->_raw_size
== 0)
969 s
->_raw_size
= PLT_FIRST_ENTRY_SIZE
;
971 /* If this symbol is not defined in a regular file, and we are
972 not generating a shared library, then set the symbol to this
973 location in the .plt. This is required to make function
974 pointers compare as equal between the normal executable and
975 the shared library. */
977 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
979 h
->root
.u
.def
.section
= s
;
980 h
->root
.u
.def
.value
= s
->_raw_size
;
983 h
->plt
.offset
= s
->_raw_size
;
985 /* Make room for this entry. */
986 s
->_raw_size
+= PLT_ENTRY_SIZE
;
988 /* We also need to make an entry in the .got.plt section, which
989 will be placed in the .got section by the linker script. */
990 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
991 BFD_ASSERT (s
!= NULL
);
992 s
->_raw_size
+= GOT_ENTRY_SIZE
;
994 /* We also need to make an entry in the .rela.plt section. */
995 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
996 BFD_ASSERT (s
!= NULL
);
997 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
1002 h
->plt
.offset
= (bfd_vma
) -1;
1004 /* If this is a weak symbol, and there is a real definition, the
1005 processor independent code will have arranged for us to see the
1006 real definition first, and we can just use the same value. */
1007 if (h
->weakdef
!= NULL
)
1009 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1010 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1011 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1012 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1016 /* This is a reference to a symbol defined by a dynamic object which
1017 is not a function. */
1019 /* If we are creating a shared library, we must presume that the
1020 only references to the symbol are via the global offset table.
1021 For such cases we need not do anything here; the relocations will
1022 be handled correctly by relocate_section. */
1026 /* If there are no references to this symbol that do not use the
1027 GOT, we don't need to generate a copy reloc. */
1028 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
1031 /* We must allocate the symbol in our .dynbss section, which will
1032 become part of the .bss section of the executable. There will be
1033 an entry for this symbol in the .dynsym section. The dynamic
1034 object will contain position independent code, so all references
1035 from the dynamic object to this symbol will go through the global
1036 offset table. The dynamic linker will use the .dynsym entry to
1037 determine the address it must put in the global offset table, so
1038 both the dynamic object and the regular object will refer to the
1039 same memory location for the variable. */
1041 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1042 BFD_ASSERT (s
!= NULL
);
1044 /* We must generate a R_390_COPY reloc to tell the dynamic linker
1045 to copy the initial value out of the dynamic object and into the
1046 runtime process image. We need to remember the offset into the
1047 .rel.bss section we are going to use. */
1048 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1052 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1053 BFD_ASSERT (srel
!= NULL
);
1054 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
1055 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1058 /* We need to figure out the alignment required for this symbol. I
1059 have no idea how ELF linkers handle this. */
1060 power_of_two
= bfd_log2 (h
->size
);
1061 if (power_of_two
> 3)
1064 /* Apply the required alignment. */
1065 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1066 (bfd_size_type
) (1 << power_of_two
));
1067 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1069 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1073 /* Define the symbol as being at this point in the section. */
1074 h
->root
.u
.def
.section
= s
;
1075 h
->root
.u
.def
.value
= s
->_raw_size
;
1077 /* Increment the section size to make room for the symbol. */
1078 s
->_raw_size
+= h
->size
;
1083 /* Set the sizes of the dynamic sections. */
1086 elf_s390_size_dynamic_sections (output_bfd
, info
)
1087 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1088 struct bfd_link_info
*info
;
1095 dynobj
= elf_hash_table (info
)->dynobj
;
1096 BFD_ASSERT (dynobj
!= NULL
);
1098 if (elf_hash_table (info
)->dynamic_sections_created
)
1100 /* Set the contents of the .interp section to the interpreter. */
1103 s
= bfd_get_section_by_name (dynobj
, ".interp");
1104 BFD_ASSERT (s
!= NULL
);
1105 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1106 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1111 /* We may have created entries in the .rela.got section.
1112 However, if we are not creating the dynamic sections, we will
1113 not actually use these entries. Reset the size of .rela.got,
1114 which will cause it to get stripped from the output file
1116 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1121 /* If this is a -Bsymbolic shared link, then we need to discard all
1122 PC relative relocs against symbols defined in a regular object.
1123 We allocated space for them in the check_relocs routine, but we
1124 will not fill them in in the relocate_section routine. */
1126 elf_s390_link_hash_traverse (elf_s390_hash_table (info
),
1127 elf_s390_discard_copies
,
1130 /* The check_relocs and adjust_dynamic_symbol entry points have
1131 determined the sizes of the various dynamic sections. Allocate
1135 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1140 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1143 /* It's OK to base decisions on the section name, because none
1144 of the dynobj section names depend upon the input files. */
1145 name
= bfd_get_section_name (dynobj
, s
);
1149 if (strcmp (name
, ".plt") == 0)
1151 if (s
->_raw_size
== 0)
1153 /* Strip this section if we don't need it; see the
1159 /* Remember whether there is a PLT. */
1163 else if (strncmp (name
, ".rela", 5) == 0)
1165 if (s
->_raw_size
== 0)
1167 /* If we don't need this section, strip it from the
1168 output file. This is to handle .rela.bss and
1169 .rel.plt. We must create it in
1170 create_dynamic_sections, because it must be created
1171 before the linker maps input sections to output
1172 sections. The linker does that before
1173 adjust_dynamic_symbol is called, and it is that
1174 function which decides whether anything needs to go
1175 into these sections. */
1180 /* Remember whether there are any reloc sections other
1182 if (strcmp (name
, ".rela.plt") != 0)
1185 /* We use the reloc_count field as a counter if we need
1186 to copy relocs into the output file. */
1190 else if (strncmp (name
, ".got", 4) != 0)
1192 /* It's not one of our sections, so don't allocate space. */
1198 _bfd_strip_section_from_output (info
, s
);
1202 /* Allocate memory for the section contents. */
1203 s
->contents
= (bfd_byte
*) bfd_alloc (dynobj
, s
->_raw_size
);
1204 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1208 if (elf_hash_table (info
)->dynamic_sections_created
)
1210 /* Add some entries to the .dynamic section. We fill in the
1211 values later, in elf_s390_finish_dynamic_sections, but we
1212 must add the entries now so that we get the correct size for
1213 the .dynamic section. The DT_DEBUG entry is filled in by the
1214 dynamic linker and used by the debugger. */
1215 #define add_dynamic_entry(TAG, VAL) \
1216 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1220 if (!add_dynamic_entry (DT_DEBUG
, 0))
1226 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1227 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
1228 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1229 || !add_dynamic_entry (DT_JMPREL
, 0))
1235 if (!add_dynamic_entry (DT_RELA
, 0)
1236 || !add_dynamic_entry (DT_RELASZ
, 0)
1237 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
1241 if ((info
->flags
& DF_TEXTREL
) != 0)
1243 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1245 info
->flags
|= DF_TEXTREL
;
1248 #undef add_dynamic_entry
1253 /* This function is called via elf_s390_link_hash_traverse if we are
1254 creating a shared object with -Bsymbolic. It discards the space
1255 allocated to copy PC relative relocs against symbols which are
1256 defined in regular objects. We allocated space for them in the
1257 check_relocs routine, but we won't fill them in in the
1258 relocate_section routine. */
1262 elf_s390_discard_copies (h
, inf
)
1263 struct elf_s390_link_hash_entry
*h
;
1266 struct elf_s390_pcrel_relocs_copied
*s
;
1267 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
1269 /* If a symbol has been forced local or we have found a regular
1270 definition for the symbolic link case, then we won't be needing
1272 if ((h
->root
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0
1273 && ((h
->root
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0
1276 for (s
= h
->pcrel_relocs_copied
; s
!= NULL
; s
= s
->next
)
1277 s
->section
->_raw_size
-= s
->count
* sizeof (Elf32_External_Rela
);
1281 /* Relocate a 390 ELF section. */
1284 elf_s390_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1285 contents
, relocs
, local_syms
, local_sections
)
1287 struct bfd_link_info
*info
;
1289 asection
*input_section
;
1291 Elf_Internal_Rela
*relocs
;
1292 Elf_Internal_Sym
*local_syms
;
1293 asection
**local_sections
;
1296 Elf_Internal_Shdr
*symtab_hdr
;
1297 struct elf_link_hash_entry
**sym_hashes
;
1298 bfd_vma
*local_got_offsets
;
1302 Elf_Internal_Rela
*rel
;
1303 Elf_Internal_Rela
*relend
;
1305 dynobj
= elf_hash_table (info
)->dynobj
;
1306 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1307 sym_hashes
= elf_sym_hashes (input_bfd
);
1308 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1315 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1316 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1320 relend
= relocs
+ input_section
->reloc_count
;
1321 for (; rel
< relend
; rel
++)
1324 reloc_howto_type
*howto
;
1325 unsigned long r_symndx
;
1326 struct elf_link_hash_entry
*h
;
1327 Elf_Internal_Sym
*sym
;
1330 bfd_reloc_status_type r
;
1332 r_type
= ELF32_R_TYPE (rel
->r_info
);
1333 if (r_type
== (int) R_390_GNU_VTINHERIT
1334 || r_type
== (int) R_390_GNU_VTENTRY
)
1336 if (r_type
< 0 || r_type
>= (int) R_390_max
)
1338 bfd_set_error (bfd_error_bad_value
);
1341 howto
= elf_howto_table
+ r_type
;
1343 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1345 if (info
->relocateable
)
1347 /* This is a relocateable link. We don't have to change
1348 anything, unless the reloc is against a section symbol,
1349 in which case we have to adjust according to where the
1350 section symbol winds up in the output section. */
1351 if (r_symndx
< symtab_hdr
->sh_info
)
1353 sym
= local_syms
+ r_symndx
;
1354 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
1356 sec
= local_sections
[r_symndx
];
1357 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
1364 /* This is a final link. */
1368 if (r_symndx
< symtab_hdr
->sh_info
)
1370 sym
= local_syms
+ r_symndx
;
1371 sec
= local_sections
[r_symndx
];
1372 relocation
= (sec
->output_section
->vma
1373 + sec
->output_offset
1378 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1379 while (h
->root
.type
== bfd_link_hash_indirect
1380 || h
->root
.type
== bfd_link_hash_warning
)
1381 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1382 if (h
->root
.type
== bfd_link_hash_defined
1383 || h
->root
.type
== bfd_link_hash_defweak
)
1385 sec
= h
->root
.u
.def
.section
;
1386 if (r_type
== R_390_GOTPC
1387 || ((r_type
== R_390_PLT16DBL
||
1388 r_type
== R_390_PLT32
)
1390 && h
->plt
.offset
!= (bfd_vma
) -1)
1391 || ((r_type
== R_390_GOT12
||
1392 r_type
== R_390_GOT16
||
1393 r_type
== R_390_GOT32
)
1394 && elf_hash_table (info
)->dynamic_sections_created
1396 || (! info
->symbolic
&& h
->dynindx
!= -1)
1397 || (h
->elf_link_hash_flags
1398 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1400 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1401 || (h
->elf_link_hash_flags
1402 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
1403 && ( r_type
== R_390_8
||
1404 r_type
== R_390_16
||
1405 r_type
== R_390_32
||
1406 r_type
== R_390_PC16
||
1407 r_type
== R_390_PC16DBL
||
1408 r_type
== R_390_PC32
)
1409 && ((input_section
->flags
& SEC_ALLOC
) != 0
1410 /* DWARF will emit R_386_32 relocations in its
1411 sections against symbols defined externally
1412 in shared libraries. We can't do anything
1414 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
1415 && (h
->elf_link_hash_flags
1416 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0))))
1418 /* In these cases, we don't need the relocation
1419 value. We check specially because in some
1420 obscure cases sec->output_section will be NULL. */
1423 else if (sec
->output_section
== NULL
)
1425 (*_bfd_error_handler
)
1426 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
1427 bfd_archive_filename (input_bfd
), h
->root
.root
.string
,
1428 bfd_get_section_name (input_bfd
, input_section
));
1432 relocation
= (h
->root
.u
.def
.value
1433 + sec
->output_section
->vma
1434 + sec
->output_offset
);
1436 else if (h
->root
.type
== bfd_link_hash_undefweak
)
1438 else if (info
->shared
1439 && (!info
->symbolic
|| info
->allow_shlib_undefined
)
1440 && !info
->no_undefined
1441 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
1445 if (! ((*info
->callbacks
->undefined_symbol
)
1446 (info
, h
->root
.root
.string
, input_bfd
,
1447 input_section
, rel
->r_offset
,
1448 (!info
->shared
|| info
->no_undefined
1449 || ELF_ST_VISIBILITY (h
->other
)))))
1460 /* Relocation is to the entry for this symbol in the global
1462 BFD_ASSERT (sgot
!= NULL
);
1468 off
= h
->got
.offset
;
1469 BFD_ASSERT (off
!= (bfd_vma
) -1);
1471 if (! elf_hash_table (info
)->dynamic_sections_created
1473 && (info
->symbolic
|| h
->dynindx
== -1)
1474 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1476 /* This is actually a static link, or it is a
1477 -Bsymbolic link and the symbol is defined
1478 locally, or the symbol was forced to be local
1479 because of a version file. We must initialize
1480 this entry in the global offset table. Since the
1481 offset must always be a multiple of 2, we use the
1482 least significant bit to record whether we have
1483 initialized it already.
1485 When doing a dynamic link, we create a .rel.got
1486 relocation entry to initialize the value. This
1487 is done in the finish_dynamic_symbol routine. */
1492 bfd_put_32 (output_bfd
, relocation
,
1493 sgot
->contents
+ off
);
1497 relocation
= sgot
->output_offset
+ off
;
1503 BFD_ASSERT (local_got_offsets
!= NULL
1504 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1506 off
= local_got_offsets
[r_symndx
];
1508 /* The offset must always be a multiple of 4. We use
1509 the least significant bit to record whether we have
1510 already generated the necessary reloc. */
1515 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1520 Elf_Internal_Rela outrel
;
1522 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1523 BFD_ASSERT (srelgot
!= NULL
);
1525 outrel
.r_offset
= (sgot
->output_section
->vma
1526 + sgot
->output_offset
1528 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
1529 outrel
.r_addend
= relocation
;
1530 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1531 (((Elf32_External_Rela
*)
1533 + srelgot
->reloc_count
));
1534 ++srelgot
->reloc_count
;
1537 local_got_offsets
[r_symndx
] |= 1;
1540 relocation
= sgot
->output_offset
+ off
;
1547 /* Relocation is relative to the start of the global offset
1552 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1553 BFD_ASSERT (sgot
!= NULL
);
1556 /* Note that sgot->output_offset is not involved in this
1557 calculation. We always want the start of .got. If we
1558 defined _GLOBAL_OFFSET_TABLE in a different way, as is
1559 permitted by the ABI, we might have to change this
1561 relocation
-= sgot
->output_section
->vma
;
1566 /* Use global offset table as symbol value. */
1570 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1571 BFD_ASSERT (sgot
!= NULL
);
1574 relocation
= sgot
->output_section
->vma
;
1578 case R_390_PLT16DBL
:
1580 /* Relocation is to the entry for this symbol in the
1581 procedure linkage table. */
1583 /* Resolve a PLT32 reloc against a local symbol directly,
1584 without using the procedure linkage table. */
1588 if (h
->plt
.offset
== (bfd_vma
) -1 || splt
== NULL
)
1590 /* We didn't make a PLT entry for this symbol. This
1591 happens when statically linking PIC code, or when
1592 using -Bsymbolic. */
1596 relocation
= (splt
->output_section
->vma
1597 + splt
->output_offset
1609 && (input_section
->flags
& SEC_ALLOC
) != 0
1610 && ((r_type
!= R_390_PC16
&&
1611 r_type
!= R_390_PC16DBL
&&
1612 r_type
!= R_390_PC32
)
1615 && (! info
->symbolic
1616 || (h
->elf_link_hash_flags
1617 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
1619 Elf_Internal_Rela outrel
;
1620 boolean skip
, relocate
;
1622 /* When generating a shared object, these relocations
1623 are copied into the output file to be resolved at run
1630 name
= (bfd_elf_string_from_elf_section
1632 elf_elfheader (input_bfd
)->e_shstrndx
,
1633 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1637 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1638 && strcmp (bfd_get_section_name (input_bfd
,
1642 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1643 BFD_ASSERT (sreloc
!= NULL
);
1648 if (elf_section_data (input_section
)->stab_info
== NULL
)
1649 outrel
.r_offset
= rel
->r_offset
;
1654 off
= (_bfd_stab_section_offset
1655 (output_bfd
, &elf_hash_table (info
)->stab_info
,
1657 &elf_section_data (input_section
)->stab_info
,
1659 if (off
== (bfd_vma
) -1)
1661 outrel
.r_offset
= off
;
1664 outrel
.r_offset
+= (input_section
->output_section
->vma
1665 + input_section
->output_offset
);
1669 memset (&outrel
, 0, sizeof outrel
);
1672 else if (r_type
== R_390_PC16
||
1673 r_type
== R_390_PC16DBL
||
1674 r_type
== R_390_PC32
)
1676 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
1678 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1679 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1683 /* h->dynindx may be -1 if this symbol was marked to
1686 || ((info
->symbolic
|| h
->dynindx
== -1)
1687 && (h
->elf_link_hash_flags
1688 & ELF_LINK_HASH_DEF_REGULAR
) != 0))
1691 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
1692 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1696 BFD_ASSERT (h
->dynindx
!= -1);
1698 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_32
);
1699 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1703 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1704 (((Elf32_External_Rela
*)
1706 + sreloc
->reloc_count
));
1707 ++sreloc
->reloc_count
;
1709 /* If this reloc is against an external symbol, we do
1710 not want to fiddle with the addend. Otherwise, we
1711 need to include the symbol value so that it becomes
1712 an addend for the dynamic reloc. */
1723 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1724 contents
, rel
->r_offset
,
1725 relocation
, rel
->r_addend
);
1727 if (r
!= bfd_reloc_ok
)
1732 case bfd_reloc_outofrange
:
1734 case bfd_reloc_overflow
:
1739 name
= h
->root
.root
.string
;
1742 name
= bfd_elf_string_from_elf_section (input_bfd
,
1743 symtab_hdr
->sh_link
,
1748 name
= bfd_section_name (input_bfd
, sec
);
1750 if (! ((*info
->callbacks
->reloc_overflow
)
1751 (info
, name
, howto
->name
, (bfd_vma
) 0,
1752 input_bfd
, input_section
, rel
->r_offset
)))
1763 /* Finish up dynamic symbol handling. We set the contents of various
1764 dynamic sections here. */
1767 elf_s390_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1769 struct bfd_link_info
*info
;
1770 struct elf_link_hash_entry
*h
;
1771 Elf_Internal_Sym
*sym
;
1775 dynobj
= elf_hash_table (info
)->dynobj
;
1777 if (h
->plt
.offset
!= (bfd_vma
) -1)
1781 Elf_Internal_Rela rela
;
1782 bfd_vma relative_offset
;
1787 /* This symbol has an entry in the procedure linkage table. Set
1790 BFD_ASSERT (h
->dynindx
!= -1);
1792 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1793 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
1794 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1795 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1798 Current offset - size first entry / entry size. */
1799 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
1801 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
1803 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
1805 /* S390 uses halfwords for relative branch calc! */
1806 relative_offset
= - ((PLT_FIRST_ENTRY_SIZE
+
1807 (PLT_ENTRY_SIZE
* plt_index
) + 18) / 2);
1808 /* If offset is > 32768, branch to a previous branch
1809 390 can only handle +-64 K jumps. */
1810 if ( -32768 > (int) relative_offset
)
1812 -(unsigned) (((65536 / PLT_ENTRY_SIZE
- 1) * PLT_ENTRY_SIZE
) / 2);
1814 /* Fill in the entry in the procedure linkage table. */
1817 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD0
,
1818 splt
->contents
+ h
->plt
.offset
);
1819 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD1
,
1820 splt
->contents
+ h
->plt
.offset
+ 4);
1821 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
1822 splt
->contents
+ h
->plt
.offset
+ 8);
1823 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD3
,
1824 splt
->contents
+ h
->plt
.offset
+ 12);
1825 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD4
,
1826 splt
->contents
+ h
->plt
.offset
+ 16);
1827 bfd_put_32 (output_bfd
, (bfd_vma
) 0 + (relative_offset
<< 16),
1828 splt
->contents
+ h
->plt
.offset
+ 20);
1829 bfd_put_32 (output_bfd
,
1830 (sgot
->output_section
->vma
1831 + sgot
->output_offset
1833 splt
->contents
+ h
->plt
.offset
+ 24);
1835 else if (got_offset
< 4096)
1837 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD0
+ got_offset
,
1838 splt
->contents
+ h
->plt
.offset
);
1839 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD1
,
1840 splt
->contents
+ h
->plt
.offset
+ 4);
1841 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD2
,
1842 splt
->contents
+ h
->plt
.offset
+ 8);
1843 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD3
,
1844 splt
->contents
+ h
->plt
.offset
+ 12);
1845 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD4
,
1846 splt
->contents
+ h
->plt
.offset
+ 16);
1847 bfd_put_32 (output_bfd
, (bfd_vma
) 0 + (relative_offset
<< 16),
1848 splt
->contents
+ h
->plt
.offset
+ 20);
1849 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1850 splt
->contents
+ h
->plt
.offset
+ 24);
1852 else if (got_offset
< 32768)
1854 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD0
+ got_offset
,
1855 splt
->contents
+ h
->plt
.offset
);
1856 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD1
,
1857 splt
->contents
+ h
->plt
.offset
+ 4);
1858 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD2
,
1859 splt
->contents
+ h
->plt
.offset
+ 8);
1860 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD3
,
1861 splt
->contents
+ h
->plt
.offset
+ 12);
1862 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD4
,
1863 splt
->contents
+ h
->plt
.offset
+ 16);
1864 bfd_put_32 (output_bfd
, (bfd_vma
) 0 + (relative_offset
<< 16),
1865 splt
->contents
+ h
->plt
.offset
+ 20);
1866 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1867 splt
->contents
+ h
->plt
.offset
+ 24);
1871 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD0
,
1872 splt
->contents
+ h
->plt
.offset
);
1873 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD1
,
1874 splt
->contents
+ h
->plt
.offset
+ 4);
1875 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD2
,
1876 splt
->contents
+ h
->plt
.offset
+ 8);
1877 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD3
,
1878 splt
->contents
+ h
->plt
.offset
+ 12);
1879 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD4
,
1880 splt
->contents
+ h
->plt
.offset
+ 16);
1881 bfd_put_32 (output_bfd
, (bfd_vma
) 0 + (relative_offset
<< 16),
1882 splt
->contents
+ h
->plt
.offset
+ 20);
1883 bfd_put_32 (output_bfd
, got_offset
,
1884 splt
->contents
+ h
->plt
.offset
+ 24);
1886 /* Insert offset into reloc. table here. */
1887 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
1888 splt
->contents
+ h
->plt
.offset
+ 28);
1889 /* Fill in the entry in the .rela.plt section. */
1890 rela
.r_offset
= (sgot
->output_section
->vma
1891 + sgot
->output_offset
1893 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
1895 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1896 ((Elf32_External_Rela
*) srela
->contents
1899 /* Fill in the entry in the global offset table.
1900 Points to instruction after GOT offset. */
1901 bfd_put_32 (output_bfd
,
1902 (splt
->output_section
->vma
1903 + splt
->output_offset
1906 sgot
->contents
+ got_offset
);
1909 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1911 /* Mark the symbol as undefined, rather than as defined in
1912 the .plt section. Leave the value alone. */
1913 sym
->st_shndx
= SHN_UNDEF
;
1917 if (h
->got
.offset
!= (bfd_vma
) -1)
1921 Elf_Internal_Rela rela
;
1923 /* This symbol has an entry in the global offset table. Set it
1926 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1927 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1928 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1930 rela
.r_offset
= (sgot
->output_section
->vma
1931 + sgot
->output_offset
1932 + (h
->got
.offset
&~ (bfd_vma
) 1));
1934 /* If this is a static link, or it is a -Bsymbolic link and the
1935 symbol is defined locally or was forced to be local because
1936 of a version file, we just want to emit a RELATIVE reloc.
1937 The entry in the global offset table will already have been
1938 initialized in the relocate_section function. */
1939 if (! elf_hash_table (info
)->dynamic_sections_created
1941 && (info
->symbolic
|| h
->dynindx
== -1)
1942 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1944 rela
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
1945 rela
.r_addend
= (h
->root
.u
.def
.value
1946 + h
->root
.u
.def
.section
->output_section
->vma
1947 + h
->root
.u
.def
.section
->output_offset
);
1951 BFD_ASSERT((h
->got
.offset
& 1) == 0);
1952 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1953 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
1957 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1958 ((Elf32_External_Rela
*) srela
->contents
1959 + srela
->reloc_count
));
1960 ++srela
->reloc_count
;
1963 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1966 Elf_Internal_Rela rela
;
1968 /* This symbols needs a copy reloc. Set it up. */
1970 BFD_ASSERT (h
->dynindx
!= -1
1971 && (h
->root
.type
== bfd_link_hash_defined
1972 || h
->root
.type
== bfd_link_hash_defweak
));
1975 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1977 BFD_ASSERT (s
!= NULL
);
1979 rela
.r_offset
= (h
->root
.u
.def
.value
1980 + h
->root
.u
.def
.section
->output_section
->vma
1981 + h
->root
.u
.def
.section
->output_offset
);
1982 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_COPY
);
1984 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1985 ((Elf32_External_Rela
*) s
->contents
1990 /* Mark some specially defined symbols as absolute. */
1991 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1992 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
1993 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
1994 sym
->st_shndx
= SHN_ABS
;
1999 /* Finish up the dynamic sections. */
2002 elf_s390_finish_dynamic_sections (output_bfd
, info
)
2004 struct bfd_link_info
*info
;
2010 dynobj
= elf_hash_table (info
)->dynobj
;
2012 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
2013 BFD_ASSERT (sgot
!= NULL
);
2014 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2016 if (elf_hash_table (info
)->dynamic_sections_created
)
2019 Elf32_External_Dyn
*dyncon
, *dynconend
;
2021 BFD_ASSERT (sdyn
!= NULL
);
2023 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
2024 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2025 for (; dyncon
< dynconend
; dyncon
++)
2027 Elf_Internal_Dyn dyn
;
2031 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2044 s
= bfd_get_section_by_name(output_bfd
, name
);
2045 BFD_ASSERT (s
!= NULL
);
2046 dyn
.d_un
.d_ptr
= s
->vma
;
2047 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2051 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
2052 BFD_ASSERT (s
!= NULL
);
2053 if (s
->_cooked_size
!= 0)
2054 dyn
.d_un
.d_val
= s
->_cooked_size
;
2056 dyn
.d_un
.d_val
= s
->_raw_size
;
2057 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2062 /* Fill in the special first entry in the procedure linkage table. */
2063 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2064 if (splt
&& splt
->_raw_size
> 0)
2066 memset (splt
->contents
, 0, PLT_FIRST_ENTRY_SIZE
);
2069 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD0
,
2071 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD1
,
2072 splt
->contents
+ 4 );
2073 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD2
,
2074 splt
->contents
+ 8 );
2075 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD3
,
2076 splt
->contents
+ 12 );
2077 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD4
,
2078 splt
->contents
+ 16 );
2082 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD0
,
2084 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD1
,
2085 splt
->contents
+ 4 );
2086 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD2
,
2087 splt
->contents
+ 8 );
2088 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD3
,
2089 splt
->contents
+ 12 );
2090 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD4
,
2091 splt
->contents
+ 16 );
2092 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD5
,
2093 splt
->contents
+ 20 );
2094 bfd_put_32 (output_bfd
,
2095 sgot
->output_section
->vma
+ sgot
->output_offset
,
2096 splt
->contents
+ 24);
2098 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
2103 /* Set the first entry in the global offset table to the address of
2104 the dynamic section. */
2105 if (sgot
->_raw_size
> 0)
2108 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
2110 bfd_put_32 (output_bfd
,
2111 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2114 /* One entry for shared object struct ptr. */
2115 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
2116 /* One entry for _dl_runtime_resolve. */
2117 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
2120 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
2126 elf_s390_object_p (abfd
)
2129 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_esa
);
2132 static enum elf_reloc_type_class
2133 elf_s390_reloc_type_class (rela
)
2134 const Elf_Internal_Rela
*rela
;
2136 switch ((int) ELF32_R_TYPE (rela
->r_info
))
2138 case R_390_RELATIVE
:
2139 return reloc_class_relative
;
2140 case R_390_JMP_SLOT
:
2141 return reloc_class_plt
;
2143 return reloc_class_copy
;
2145 return reloc_class_normal
;
2149 #define TARGET_BIG_SYM bfd_elf32_s390_vec
2150 #define TARGET_BIG_NAME "elf32-s390"
2151 #define ELF_ARCH bfd_arch_s390
2152 #define ELF_MACHINE_CODE EM_S390
2153 #define ELF_MACHINE_ALT1 EM_S390_OLD
2154 #define ELF_MAXPAGESIZE 0x1000
2156 #define elf_backend_can_gc_sections 1
2157 #define elf_backend_can_refcount 1
2158 #define elf_backend_want_got_plt 1
2159 #define elf_backend_plt_readonly 1
2160 #define elf_backend_want_plt_sym 0
2161 #define elf_backend_got_header_size 12
2162 #define elf_backend_plt_header_size PLT_ENTRY_SIZE
2164 #define elf_info_to_howto elf_s390_info_to_howto
2166 #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
2167 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
2168 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
2169 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
2171 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
2172 #define elf_backend_check_relocs elf_s390_check_relocs
2173 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
2174 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
2175 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
2176 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
2177 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
2178 #define elf_backend_relocate_section elf_s390_relocate_section
2179 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
2180 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
2182 #define elf_backend_object_p elf_s390_object_p
2184 #include "elf32-target.h"