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
== -1)
584 /* Make sure this symbol is output as a dynamic symbol. */
585 if (h
->dynindx
== -1)
587 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
591 sgot
->_raw_size
+= 4;
592 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
595 h
->got
.refcount
+= 1;
599 /* This is a global offset table entry for a local symbol. */
600 if (local_got_refcounts
== NULL
)
604 size
= symtab_hdr
->sh_info
;
605 size
*= sizeof (bfd_signed_vma
);
606 local_got_refcounts
= (bfd_signed_vma
*)
607 bfd_alloc (abfd
, size
);
608 if (local_got_refcounts
== NULL
)
610 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
611 memset (local_got_refcounts
, -1, (size_t) size
);
613 if (local_got_refcounts
[r_symndx
] == -1)
615 local_got_refcounts
[r_symndx
] = 1;
617 sgot
->_raw_size
+= 4;
620 /* If we are generating a shared object, we need to
621 output a R_390_RELATIVE reloc so that the dynamic
622 linker can adjust this GOT entry. */
623 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
627 local_got_refcounts
[r_symndx
] += 1;
633 /* This symbol requires a procedure linkage table entry. We
634 actually build the entry in adjust_dynamic_symbol,
635 because this might be a case of linking PIC code which is
636 never referenced by a dynamic object, in which case we
637 don't need to generate a procedure linkage table entry
640 /* If this is a local symbol, we resolve it directly without
641 creating a procedure linkage table entry. */
645 if (h
->plt
.refcount
== -1)
648 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
651 h
->plt
.refcount
+= 1;
661 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
663 /* If we are creating a shared library, and this is a reloc
664 against a global symbol, or a non PC relative reloc
665 against a local symbol, then we need to copy the reloc
666 into the shared library. However, if we are linking with
667 -Bsymbolic, we do not need to copy a reloc against a
668 global symbol which is defined in an object we are
669 including in the link (i.e., DEF_REGULAR is set). At
670 this point we have not seen all the input files, so it is
671 possible that DEF_REGULAR is not set now but will be set
672 later (it is never cleared). We account for that
673 possibility below by storing information in the
674 pcrel_relocs_copied field of the hash table entry. */
676 && (sec
->flags
& SEC_ALLOC
) != 0
677 && ((ELF32_R_TYPE (rel
->r_info
) != R_390_PC16
&&
678 ELF32_R_TYPE (rel
->r_info
) != R_390_PC16DBL
&&
679 ELF32_R_TYPE (rel
->r_info
) != R_390_PC32
)
682 || (h
->elf_link_hash_flags
683 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
685 /* When creating a shared object, we must copy these
686 reloc types into the output file. We create a reloc
687 section in dynobj and make room for this reloc. */
692 name
= (bfd_elf_string_from_elf_section
694 elf_elfheader (abfd
)->e_shstrndx
,
695 elf_section_data (sec
)->rel_hdr
.sh_name
));
699 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
700 && strcmp (bfd_get_section_name (abfd
, sec
),
703 sreloc
= bfd_get_section_by_name (dynobj
, name
);
708 sreloc
= bfd_make_section (dynobj
, name
);
709 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
710 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
711 if ((sec
->flags
& SEC_ALLOC
) != 0)
712 flags
|= SEC_ALLOC
| SEC_LOAD
;
714 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
715 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
718 if (sec
->flags
& SEC_READONLY
)
719 info
->flags
|= DF_TEXTREL
;
722 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
724 /* If we are linking with -Bsymbolic, and this is a
725 global symbol, we count the number of PC relative
726 relocations we have entered for this symbol, so that
727 we can discard them again if the symbol is later
728 defined by a regular object. Note that this function
729 is only called if we are using an elf_s390 linker
730 hash table, which means that h is really a pointer to
731 an elf_s390_link_hash_entry. */
733 && (ELF32_R_TYPE (rel
->r_info
) == R_390_PC16
||
734 ELF32_R_TYPE (rel
->r_info
) == R_390_PC16DBL
||
735 ELF32_R_TYPE (rel
->r_info
) == R_390_PC32
))
737 struct elf_s390_link_hash_entry
*eh
;
738 struct elf_s390_pcrel_relocs_copied
*p
;
740 eh
= (struct elf_s390_link_hash_entry
*) h
;
742 for (p
= eh
->pcrel_relocs_copied
; p
!= NULL
; p
= p
->next
)
743 if (p
->section
== sreloc
)
748 p
= ((struct elf_s390_pcrel_relocs_copied
*)
749 bfd_alloc (dynobj
, (bfd_size_type
) sizeof *p
));
752 p
->next
= eh
->pcrel_relocs_copied
;
753 eh
->pcrel_relocs_copied
= p
;
764 /* This relocation describes the C++ object vtable hierarchy.
765 Reconstruct it for later use during GC. */
766 case R_390_GNU_VTINHERIT
:
767 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
771 /* This relocation describes which C++ vtable entries are actually
772 used. Record for later use during GC. */
773 case R_390_GNU_VTENTRY
:
774 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
786 /* Return the section that should be marked against GC for a given
790 elf_s390_gc_mark_hook (abfd
, info
, rel
, h
, sym
)
792 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
793 Elf_Internal_Rela
*rel
;
794 struct elf_link_hash_entry
*h
;
795 Elf_Internal_Sym
*sym
;
799 switch (ELF32_R_TYPE (rel
->r_info
))
801 case R_390_GNU_VTINHERIT
:
802 case R_390_GNU_VTENTRY
:
806 switch (h
->root
.type
)
808 case bfd_link_hash_defined
:
809 case bfd_link_hash_defweak
:
810 return h
->root
.u
.def
.section
;
812 case bfd_link_hash_common
:
813 return h
->root
.u
.c
.p
->section
;
822 if (!(elf_bad_symtab (abfd
)
823 && ELF_ST_BIND (sym
->st_info
) != STB_LOCAL
)
824 && ! ((sym
->st_shndx
<= 0 || sym
->st_shndx
>= SHN_LORESERVE
)
825 && sym
->st_shndx
!= SHN_COMMON
))
827 return bfd_section_from_elf_index (abfd
, sym
->st_shndx
);
834 /* Update the got entry reference counts for the section being removed. */
837 elf_s390_gc_sweep_hook (abfd
, info
, sec
, relocs
)
838 bfd
*abfd ATTRIBUTE_UNUSED
;
839 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
840 asection
*sec ATTRIBUTE_UNUSED
;
841 const Elf_Internal_Rela
*relocs ATTRIBUTE_UNUSED
;
843 Elf_Internal_Shdr
*symtab_hdr
;
844 struct elf_link_hash_entry
**sym_hashes
;
845 bfd_signed_vma
*local_got_refcounts
;
846 const Elf_Internal_Rela
*rel
, *relend
;
847 unsigned long r_symndx
;
848 struct elf_link_hash_entry
*h
;
853 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
854 sym_hashes
= elf_sym_hashes (abfd
);
855 local_got_refcounts
= elf_local_got_refcounts (abfd
);
857 dynobj
= elf_hash_table (info
)->dynobj
;
861 sgot
= bfd_get_section_by_name (dynobj
, ".got");
862 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
864 relend
= relocs
+ sec
->reloc_count
;
865 for (rel
= relocs
; rel
< relend
; rel
++)
866 switch (ELF32_R_TYPE (rel
->r_info
))
873 r_symndx
= ELF32_R_SYM (rel
->r_info
);
874 if (r_symndx
>= symtab_hdr
->sh_info
)
876 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
877 if (h
->got
.refcount
> 0)
879 h
->got
.refcount
-= 1;
880 if (h
->got
.refcount
== 0)
882 sgot
->_raw_size
-= 4;
883 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
887 else if (local_got_refcounts
!= NULL
)
889 if (local_got_refcounts
[r_symndx
] > 0)
891 local_got_refcounts
[r_symndx
] -= 1;
892 if (local_got_refcounts
[r_symndx
] == 0)
894 sgot
->_raw_size
-= 4;
896 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
904 r_symndx
= ELF32_R_SYM (rel
->r_info
);
905 if (r_symndx
>= symtab_hdr
->sh_info
)
907 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
908 if (h
->plt
.refcount
> 0)
909 h
->plt
.refcount
-= 1;
920 /* Adjust a symbol defined by a dynamic object and referenced by a
921 regular object. The current definition is in some section of the
922 dynamic object, but we're not including those sections. We have to
923 change the definition to something the rest of the link can
927 elf_s390_adjust_dynamic_symbol (info
, h
)
928 struct bfd_link_info
*info
;
929 struct elf_link_hash_entry
*h
;
933 unsigned int power_of_two
;
935 dynobj
= elf_hash_table (info
)->dynobj
;
937 /* Make sure we know what is going on here. */
938 BFD_ASSERT (dynobj
!= NULL
939 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
940 || h
->weakdef
!= NULL
941 || ((h
->elf_link_hash_flags
942 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
943 && (h
->elf_link_hash_flags
944 & ELF_LINK_HASH_REF_REGULAR
) != 0
945 && (h
->elf_link_hash_flags
946 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
948 /* If this is a function, put it in the procedure linkage table. We
949 will fill in the contents of the procedure linkage table later
950 (although we could actually do it here). */
951 if (h
->type
== STT_FUNC
952 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
955 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) == 0
956 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) == 0)
957 || (info
->shared
&& h
->plt
.refcount
<= 0))
959 /* This case can occur if we saw a PLT32 reloc in an input
960 file, but the symbol was never referred to by a dynamic
961 object, or if all references were garbage collected. In
962 such a case, we don't actually need to build a procedure
963 linkage table, and we can just do a PC32 reloc instead. */
964 h
->plt
.offset
= (bfd_vma
) -1;
965 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
969 /* Make sure this symbol is output as a dynamic symbol. */
970 if (h
->dynindx
== -1)
972 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
976 s
= bfd_get_section_by_name (dynobj
, ".plt");
977 BFD_ASSERT (s
!= NULL
);
979 /* The first entry in .plt is reserved. */
980 if (s
->_raw_size
== 0)
981 s
->_raw_size
= PLT_FIRST_ENTRY_SIZE
;
983 /* If this symbol is not defined in a regular file, and we are
984 not generating a shared library, then set the symbol to this
985 location in the .plt. This is required to make function
986 pointers compare as equal between the normal executable and
987 the shared library. */
989 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
991 h
->root
.u
.def
.section
= s
;
992 h
->root
.u
.def
.value
= s
->_raw_size
;
995 h
->plt
.offset
= s
->_raw_size
;
997 /* Make room for this entry. */
998 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1000 /* We also need to make an entry in the .got.plt section, which
1001 will be placed in the .got section by the linker script. */
1002 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
1003 BFD_ASSERT (s
!= NULL
);
1004 s
->_raw_size
+= GOT_ENTRY_SIZE
;
1006 /* We also need to make an entry in the .rela.plt section. */
1007 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1008 BFD_ASSERT (s
!= NULL
);
1009 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
1014 /* If this is a weak symbol, and there is a real definition, the
1015 processor independent code will have arranged for us to see the
1016 real definition first, and we can just use the same value. */
1017 if (h
->weakdef
!= NULL
)
1019 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1020 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1021 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1022 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1026 /* This is a reference to a symbol defined by a dynamic object which
1027 is not a function. */
1029 /* If we are creating a shared library, we must presume that the
1030 only references to the symbol are via the global offset table.
1031 For such cases we need not do anything here; the relocations will
1032 be handled correctly by relocate_section. */
1036 /* If there are no references to this symbol that do not use the
1037 GOT, we don't need to generate a copy reloc. */
1038 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
1041 /* We must allocate the symbol in our .dynbss section, which will
1042 become part of the .bss section of the executable. There will be
1043 an entry for this symbol in the .dynsym section. The dynamic
1044 object will contain position independent code, so all references
1045 from the dynamic object to this symbol will go through the global
1046 offset table. The dynamic linker will use the .dynsym entry to
1047 determine the address it must put in the global offset table, so
1048 both the dynamic object and the regular object will refer to the
1049 same memory location for the variable. */
1051 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1052 BFD_ASSERT (s
!= NULL
);
1054 /* We must generate a R_390_COPY reloc to tell the dynamic linker
1055 to copy the initial value out of the dynamic object and into the
1056 runtime process image. We need to remember the offset into the
1057 .rel.bss section we are going to use. */
1058 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1062 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1063 BFD_ASSERT (srel
!= NULL
);
1064 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
1065 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1068 /* We need to figure out the alignment required for this symbol. I
1069 have no idea how ELF linkers handle this. */
1070 power_of_two
= bfd_log2 (h
->size
);
1071 if (power_of_two
> 3)
1074 /* Apply the required alignment. */
1075 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1076 (bfd_size_type
) (1 << power_of_two
));
1077 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1079 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1083 /* Define the symbol as being at this point in the section. */
1084 h
->root
.u
.def
.section
= s
;
1085 h
->root
.u
.def
.value
= s
->_raw_size
;
1087 /* Increment the section size to make room for the symbol. */
1088 s
->_raw_size
+= h
->size
;
1093 /* Set the sizes of the dynamic sections. */
1096 elf_s390_size_dynamic_sections (output_bfd
, info
)
1097 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1098 struct bfd_link_info
*info
;
1105 dynobj
= elf_hash_table (info
)->dynobj
;
1106 BFD_ASSERT (dynobj
!= NULL
);
1108 if (elf_hash_table (info
)->dynamic_sections_created
)
1110 /* Set the contents of the .interp section to the interpreter. */
1113 s
= bfd_get_section_by_name (dynobj
, ".interp");
1114 BFD_ASSERT (s
!= NULL
);
1115 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1116 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1121 /* We may have created entries in the .rela.got section.
1122 However, if we are not creating the dynamic sections, we will
1123 not actually use these entries. Reset the size of .rela.got,
1124 which will cause it to get stripped from the output file
1126 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1131 /* If this is a -Bsymbolic shared link, then we need to discard all
1132 PC relative relocs against symbols defined in a regular object.
1133 We allocated space for them in the check_relocs routine, but we
1134 will not fill them in in the relocate_section routine. */
1136 elf_s390_link_hash_traverse (elf_s390_hash_table (info
),
1137 elf_s390_discard_copies
,
1140 /* The check_relocs and adjust_dynamic_symbol entry points have
1141 determined the sizes of the various dynamic sections. Allocate
1145 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1150 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1153 /* It's OK to base decisions on the section name, because none
1154 of the dynobj section names depend upon the input files. */
1155 name
= bfd_get_section_name (dynobj
, s
);
1159 if (strcmp (name
, ".plt") == 0)
1161 if (s
->_raw_size
== 0)
1163 /* Strip this section if we don't need it; see the
1169 /* Remember whether there is a PLT. */
1173 else if (strncmp (name
, ".rela", 5) == 0)
1175 if (s
->_raw_size
== 0)
1177 /* If we don't need this section, strip it from the
1178 output file. This is to handle .rela.bss and
1179 .rel.plt. We must create it in
1180 create_dynamic_sections, because it must be created
1181 before the linker maps input sections to output
1182 sections. The linker does that before
1183 adjust_dynamic_symbol is called, and it is that
1184 function which decides whether anything needs to go
1185 into these sections. */
1190 /* Remember whether there are any reloc sections other
1192 if (strcmp (name
, ".rela.plt") != 0)
1195 /* We use the reloc_count field as a counter if we need
1196 to copy relocs into the output file. */
1200 else if (strncmp (name
, ".got", 4) != 0)
1202 /* It's not one of our sections, so don't allocate space. */
1208 _bfd_strip_section_from_output (info
, s
);
1212 /* Allocate memory for the section contents. */
1213 s
->contents
= (bfd_byte
*) bfd_alloc (dynobj
, s
->_raw_size
);
1214 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1218 if (elf_hash_table (info
)->dynamic_sections_created
)
1220 /* Add some entries to the .dynamic section. We fill in the
1221 values later, in elf_s390_finish_dynamic_sections, but we
1222 must add the entries now so that we get the correct size for
1223 the .dynamic section. The DT_DEBUG entry is filled in by the
1224 dynamic linker and used by the debugger. */
1225 #define add_dynamic_entry(TAG, VAL) \
1226 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1230 if (!add_dynamic_entry (DT_DEBUG
, 0))
1236 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1237 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
1238 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1239 || !add_dynamic_entry (DT_JMPREL
, 0))
1245 if (!add_dynamic_entry (DT_RELA
, 0)
1246 || !add_dynamic_entry (DT_RELASZ
, 0)
1247 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
1251 if ((info
->flags
& DF_TEXTREL
) != 0)
1253 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1255 info
->flags
|= DF_TEXTREL
;
1258 #undef add_dynamic_entry
1263 /* This function is called via elf_s390_link_hash_traverse if we are
1264 creating a shared object with -Bsymbolic. It discards the space
1265 allocated to copy PC relative relocs against symbols which are
1266 defined in regular objects. We allocated space for them in the
1267 check_relocs routine, but we won't fill them in in the
1268 relocate_section routine. */
1272 elf_s390_discard_copies (h
, inf
)
1273 struct elf_s390_link_hash_entry
*h
;
1276 struct elf_s390_pcrel_relocs_copied
*s
;
1277 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
1279 /* If a symbol has been forced local or we have found a regular
1280 definition for the symbolic link case, then we won't be needing
1282 if ((h
->root
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0
1283 && ((h
->root
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0
1286 for (s
= h
->pcrel_relocs_copied
; s
!= NULL
; s
= s
->next
)
1287 s
->section
->_raw_size
-= s
->count
* sizeof (Elf32_External_Rela
);
1291 /* Relocate a 390 ELF section. */
1294 elf_s390_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1295 contents
, relocs
, local_syms
, local_sections
)
1297 struct bfd_link_info
*info
;
1299 asection
*input_section
;
1301 Elf_Internal_Rela
*relocs
;
1302 Elf_Internal_Sym
*local_syms
;
1303 asection
**local_sections
;
1306 Elf_Internal_Shdr
*symtab_hdr
;
1307 struct elf_link_hash_entry
**sym_hashes
;
1308 bfd_vma
*local_got_offsets
;
1312 Elf_Internal_Rela
*rel
;
1313 Elf_Internal_Rela
*relend
;
1315 dynobj
= elf_hash_table (info
)->dynobj
;
1316 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1317 sym_hashes
= elf_sym_hashes (input_bfd
);
1318 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1325 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1326 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1330 relend
= relocs
+ input_section
->reloc_count
;
1331 for (; rel
< relend
; rel
++)
1334 reloc_howto_type
*howto
;
1335 unsigned long r_symndx
;
1336 struct elf_link_hash_entry
*h
;
1337 Elf_Internal_Sym
*sym
;
1340 bfd_reloc_status_type r
;
1342 r_type
= ELF32_R_TYPE (rel
->r_info
);
1343 if (r_type
== (int) R_390_GNU_VTINHERIT
1344 || r_type
== (int) R_390_GNU_VTENTRY
)
1346 if (r_type
< 0 || r_type
>= (int) R_390_max
)
1348 bfd_set_error (bfd_error_bad_value
);
1351 howto
= elf_howto_table
+ r_type
;
1353 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1355 if (info
->relocateable
)
1357 /* This is a relocateable link. We don't have to change
1358 anything, unless the reloc is against a section symbol,
1359 in which case we have to adjust according to where the
1360 section symbol winds up in the output section. */
1361 if (r_symndx
< symtab_hdr
->sh_info
)
1363 sym
= local_syms
+ r_symndx
;
1364 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
1366 sec
= local_sections
[r_symndx
];
1367 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
1374 /* This is a final link. */
1378 if (r_symndx
< symtab_hdr
->sh_info
)
1380 sym
= local_syms
+ r_symndx
;
1381 sec
= local_sections
[r_symndx
];
1382 relocation
= (sec
->output_section
->vma
1383 + sec
->output_offset
1388 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1389 while (h
->root
.type
== bfd_link_hash_indirect
1390 || h
->root
.type
== bfd_link_hash_warning
)
1391 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1392 if (h
->root
.type
== bfd_link_hash_defined
1393 || h
->root
.type
== bfd_link_hash_defweak
)
1395 sec
= h
->root
.u
.def
.section
;
1396 if (r_type
== R_390_GOTPC
1397 || ((r_type
== R_390_PLT16DBL
||
1398 r_type
== R_390_PLT32
)
1400 && h
->plt
.offset
!= (bfd_vma
) -1)
1401 || ((r_type
== R_390_GOT12
||
1402 r_type
== R_390_GOT16
||
1403 r_type
== R_390_GOT32
)
1404 && elf_hash_table (info
)->dynamic_sections_created
1406 || (! info
->symbolic
&& h
->dynindx
!= -1)
1407 || (h
->elf_link_hash_flags
1408 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1410 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1411 || (h
->elf_link_hash_flags
1412 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
1413 && ( r_type
== R_390_8
||
1414 r_type
== R_390_16
||
1415 r_type
== R_390_32
||
1416 r_type
== R_390_PC16
||
1417 r_type
== R_390_PC16DBL
||
1418 r_type
== R_390_PC32
)
1419 && ((input_section
->flags
& SEC_ALLOC
) != 0
1420 /* DWARF will emit R_386_32 relocations in its
1421 sections against symbols defined externally
1422 in shared libraries. We can't do anything
1424 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
1425 && (h
->elf_link_hash_flags
1426 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0))))
1428 /* In these cases, we don't need the relocation
1429 value. We check specially because in some
1430 obscure cases sec->output_section will be NULL. */
1433 else if (sec
->output_section
== NULL
)
1435 (*_bfd_error_handler
)
1436 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
1437 bfd_archive_filename (input_bfd
), h
->root
.root
.string
,
1438 bfd_get_section_name (input_bfd
, input_section
));
1442 relocation
= (h
->root
.u
.def
.value
1443 + sec
->output_section
->vma
1444 + sec
->output_offset
);
1446 else if (h
->root
.type
== bfd_link_hash_undefweak
)
1448 else if (info
->shared
1449 && (!info
->symbolic
|| info
->allow_shlib_undefined
)
1450 && !info
->no_undefined
1451 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
1455 if (! ((*info
->callbacks
->undefined_symbol
)
1456 (info
, h
->root
.root
.string
, input_bfd
,
1457 input_section
, rel
->r_offset
,
1458 (!info
->shared
|| info
->no_undefined
1459 || ELF_ST_VISIBILITY (h
->other
)))))
1470 /* Relocation is to the entry for this symbol in the global
1472 BFD_ASSERT (sgot
!= NULL
);
1478 off
= h
->got
.offset
;
1479 BFD_ASSERT (off
!= (bfd_vma
) -1);
1481 if (! elf_hash_table (info
)->dynamic_sections_created
1483 && (info
->symbolic
|| h
->dynindx
== -1)
1484 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1486 /* This is actually a static link, or it is a
1487 -Bsymbolic link and the symbol is defined
1488 locally, or the symbol was forced to be local
1489 because of a version file. We must initialize
1490 this entry in the global offset table. Since the
1491 offset must always be a multiple of 2, we use the
1492 least significant bit to record whether we have
1493 initialized it already.
1495 When doing a dynamic link, we create a .rel.got
1496 relocation entry to initialize the value. This
1497 is done in the finish_dynamic_symbol routine. */
1502 bfd_put_32 (output_bfd
, relocation
,
1503 sgot
->contents
+ off
);
1507 relocation
= sgot
->output_offset
+ off
;
1513 BFD_ASSERT (local_got_offsets
!= NULL
1514 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1516 off
= local_got_offsets
[r_symndx
];
1518 /* The offset must always be a multiple of 4. We use
1519 the least significant bit to record whether we have
1520 already generated the necessary reloc. */
1525 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1530 Elf_Internal_Rela outrel
;
1532 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1533 BFD_ASSERT (srelgot
!= NULL
);
1535 outrel
.r_offset
= (sgot
->output_section
->vma
1536 + sgot
->output_offset
1538 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
1539 outrel
.r_addend
= relocation
;
1540 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1541 (((Elf32_External_Rela
*)
1543 + srelgot
->reloc_count
));
1544 ++srelgot
->reloc_count
;
1547 local_got_offsets
[r_symndx
] |= 1;
1550 relocation
= sgot
->output_offset
+ off
;
1557 /* Relocation is relative to the start of the global offset
1562 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1563 BFD_ASSERT (sgot
!= NULL
);
1566 /* Note that sgot->output_offset is not involved in this
1567 calculation. We always want the start of .got. If we
1568 defined _GLOBAL_OFFSET_TABLE in a different way, as is
1569 permitted by the ABI, we might have to change this
1571 relocation
-= sgot
->output_section
->vma
;
1576 /* Use global offset table as symbol value. */
1580 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1581 BFD_ASSERT (sgot
!= NULL
);
1584 relocation
= sgot
->output_section
->vma
;
1588 case R_390_PLT16DBL
:
1590 /* Relocation is to the entry for this symbol in the
1591 procedure linkage table. */
1593 /* Resolve a PLT32 reloc against a local symbol directly,
1594 without using the procedure linkage table. */
1598 if (h
->plt
.offset
== (bfd_vma
) -1 || splt
== NULL
)
1600 /* We didn't make a PLT entry for this symbol. This
1601 happens when statically linking PIC code, or when
1602 using -Bsymbolic. */
1606 relocation
= (splt
->output_section
->vma
1607 + splt
->output_offset
1619 && (input_section
->flags
& SEC_ALLOC
) != 0
1620 && ((r_type
!= R_390_PC16
&&
1621 r_type
!= R_390_PC16DBL
&&
1622 r_type
!= R_390_PC32
)
1625 && (! info
->symbolic
1626 || (h
->elf_link_hash_flags
1627 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
1629 Elf_Internal_Rela outrel
;
1630 boolean skip
, relocate
;
1632 /* When generating a shared object, these relocations
1633 are copied into the output file to be resolved at run
1640 name
= (bfd_elf_string_from_elf_section
1642 elf_elfheader (input_bfd
)->e_shstrndx
,
1643 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1647 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1648 && strcmp (bfd_get_section_name (input_bfd
,
1652 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1653 BFD_ASSERT (sreloc
!= NULL
);
1658 if (elf_section_data (input_section
)->stab_info
== NULL
)
1659 outrel
.r_offset
= rel
->r_offset
;
1664 off
= (_bfd_stab_section_offset
1665 (output_bfd
, &elf_hash_table (info
)->stab_info
,
1667 &elf_section_data (input_section
)->stab_info
,
1669 if (off
== (bfd_vma
) -1)
1671 outrel
.r_offset
= off
;
1674 outrel
.r_offset
+= (input_section
->output_section
->vma
1675 + input_section
->output_offset
);
1679 memset (&outrel
, 0, sizeof outrel
);
1682 else if (r_type
== R_390_PC16
||
1683 r_type
== R_390_PC16DBL
||
1684 r_type
== R_390_PC32
)
1686 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
1688 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1689 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1693 /* h->dynindx may be -1 if this symbol was marked to
1696 || ((info
->symbolic
|| h
->dynindx
== -1)
1697 && (h
->elf_link_hash_flags
1698 & ELF_LINK_HASH_DEF_REGULAR
) != 0))
1701 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
1702 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1706 BFD_ASSERT (h
->dynindx
!= -1);
1708 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_32
);
1709 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1713 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1714 (((Elf32_External_Rela
*)
1716 + sreloc
->reloc_count
));
1717 ++sreloc
->reloc_count
;
1719 /* If this reloc is against an external symbol, we do
1720 not want to fiddle with the addend. Otherwise, we
1721 need to include the symbol value so that it becomes
1722 an addend for the dynamic reloc. */
1733 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1734 contents
, rel
->r_offset
,
1735 relocation
, rel
->r_addend
);
1737 if (r
!= bfd_reloc_ok
)
1742 case bfd_reloc_outofrange
:
1744 case bfd_reloc_overflow
:
1749 name
= h
->root
.root
.string
;
1752 name
= bfd_elf_string_from_elf_section (input_bfd
,
1753 symtab_hdr
->sh_link
,
1758 name
= bfd_section_name (input_bfd
, sec
);
1760 if (! ((*info
->callbacks
->reloc_overflow
)
1761 (info
, name
, howto
->name
, (bfd_vma
) 0,
1762 input_bfd
, input_section
, rel
->r_offset
)))
1773 /* Finish up dynamic symbol handling. We set the contents of various
1774 dynamic sections here. */
1777 elf_s390_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1779 struct bfd_link_info
*info
;
1780 struct elf_link_hash_entry
*h
;
1781 Elf_Internal_Sym
*sym
;
1785 dynobj
= elf_hash_table (info
)->dynobj
;
1787 if (h
->plt
.offset
!= (bfd_vma
) -1)
1791 Elf_Internal_Rela rela
;
1792 bfd_vma relative_offset
;
1797 /* This symbol has an entry in the procedure linkage table. Set
1800 BFD_ASSERT (h
->dynindx
!= -1);
1802 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1803 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
1804 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1805 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1808 Current offset - size first entry / entry size. */
1809 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
1811 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
1813 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
1815 /* S390 uses halfwords for relative branch calc! */
1816 relative_offset
= - ((PLT_FIRST_ENTRY_SIZE
+
1817 (PLT_ENTRY_SIZE
* plt_index
) + 18) / 2);
1818 /* If offset is > 32768, branch to a previous branch
1819 390 can only handle +-64 K jumps. */
1820 if ( -32768 > (int) relative_offset
)
1822 -(unsigned) (((65536 / PLT_ENTRY_SIZE
- 1) * PLT_ENTRY_SIZE
) / 2);
1824 /* Fill in the entry in the procedure linkage table. */
1827 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD0
,
1828 splt
->contents
+ h
->plt
.offset
);
1829 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD1
,
1830 splt
->contents
+ h
->plt
.offset
+ 4);
1831 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
1832 splt
->contents
+ h
->plt
.offset
+ 8);
1833 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD3
,
1834 splt
->contents
+ h
->plt
.offset
+ 12);
1835 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD4
,
1836 splt
->contents
+ h
->plt
.offset
+ 16);
1837 bfd_put_32 (output_bfd
, (bfd_vma
) 0 + (relative_offset
<< 16),
1838 splt
->contents
+ h
->plt
.offset
+ 20);
1839 bfd_put_32 (output_bfd
,
1840 (sgot
->output_section
->vma
1841 + sgot
->output_offset
1843 splt
->contents
+ h
->plt
.offset
+ 24);
1845 else if (got_offset
< 4096)
1847 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD0
+ got_offset
,
1848 splt
->contents
+ h
->plt
.offset
);
1849 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD1
,
1850 splt
->contents
+ h
->plt
.offset
+ 4);
1851 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD2
,
1852 splt
->contents
+ h
->plt
.offset
+ 8);
1853 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD3
,
1854 splt
->contents
+ h
->plt
.offset
+ 12);
1855 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD4
,
1856 splt
->contents
+ h
->plt
.offset
+ 16);
1857 bfd_put_32 (output_bfd
, (bfd_vma
) 0 + (relative_offset
<< 16),
1858 splt
->contents
+ h
->plt
.offset
+ 20);
1859 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1860 splt
->contents
+ h
->plt
.offset
+ 24);
1862 else if (got_offset
< 32768)
1864 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD0
+ got_offset
,
1865 splt
->contents
+ h
->plt
.offset
);
1866 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD1
,
1867 splt
->contents
+ h
->plt
.offset
+ 4);
1868 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD2
,
1869 splt
->contents
+ h
->plt
.offset
+ 8);
1870 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD3
,
1871 splt
->contents
+ h
->plt
.offset
+ 12);
1872 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD4
,
1873 splt
->contents
+ h
->plt
.offset
+ 16);
1874 bfd_put_32 (output_bfd
, (bfd_vma
) 0 + (relative_offset
<< 16),
1875 splt
->contents
+ h
->plt
.offset
+ 20);
1876 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1877 splt
->contents
+ h
->plt
.offset
+ 24);
1881 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD0
,
1882 splt
->contents
+ h
->plt
.offset
);
1883 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD1
,
1884 splt
->contents
+ h
->plt
.offset
+ 4);
1885 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD2
,
1886 splt
->contents
+ h
->plt
.offset
+ 8);
1887 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD3
,
1888 splt
->contents
+ h
->plt
.offset
+ 12);
1889 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD4
,
1890 splt
->contents
+ h
->plt
.offset
+ 16);
1891 bfd_put_32 (output_bfd
, (bfd_vma
) 0 + (relative_offset
<< 16),
1892 splt
->contents
+ h
->plt
.offset
+ 20);
1893 bfd_put_32 (output_bfd
, got_offset
,
1894 splt
->contents
+ h
->plt
.offset
+ 24);
1896 /* Insert offset into reloc. table here. */
1897 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
1898 splt
->contents
+ h
->plt
.offset
+ 28);
1899 /* Fill in the entry in the .rela.plt section. */
1900 rela
.r_offset
= (sgot
->output_section
->vma
1901 + sgot
->output_offset
1903 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
1905 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1906 ((Elf32_External_Rela
*) srela
->contents
1909 /* Fill in the entry in the global offset table.
1910 Points to instruction after GOT offset. */
1911 bfd_put_32 (output_bfd
,
1912 (splt
->output_section
->vma
1913 + splt
->output_offset
1916 sgot
->contents
+ got_offset
);
1919 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1921 /* Mark the symbol as undefined, rather than as defined in
1922 the .plt section. Leave the value alone. */
1923 sym
->st_shndx
= SHN_UNDEF
;
1927 if (h
->got
.offset
!= (bfd_vma
) -1)
1931 Elf_Internal_Rela rela
;
1933 /* This symbol has an entry in the global offset table. Set it
1936 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1937 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1938 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1940 rela
.r_offset
= (sgot
->output_section
->vma
1941 + sgot
->output_offset
1942 + (h
->got
.offset
&~ (bfd_vma
) 1));
1944 /* If this is a static link, or it is a -Bsymbolic link and the
1945 symbol is defined locally or was forced to be local because
1946 of a version file, we just want to emit a RELATIVE reloc.
1947 The entry in the global offset table will already have been
1948 initialized in the relocate_section function. */
1949 if (! elf_hash_table (info
)->dynamic_sections_created
1951 && (info
->symbolic
|| h
->dynindx
== -1)
1952 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1954 rela
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
1955 rela
.r_addend
= (h
->root
.u
.def
.value
1956 + h
->root
.u
.def
.section
->output_section
->vma
1957 + h
->root
.u
.def
.section
->output_offset
);
1961 BFD_ASSERT((h
->got
.offset
& 1) == 0);
1962 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1963 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
1967 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1968 ((Elf32_External_Rela
*) srela
->contents
1969 + srela
->reloc_count
));
1970 ++srela
->reloc_count
;
1973 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1976 Elf_Internal_Rela rela
;
1978 /* This symbols needs a copy reloc. Set it up. */
1980 BFD_ASSERT (h
->dynindx
!= -1
1981 && (h
->root
.type
== bfd_link_hash_defined
1982 || h
->root
.type
== bfd_link_hash_defweak
));
1985 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1987 BFD_ASSERT (s
!= NULL
);
1989 rela
.r_offset
= (h
->root
.u
.def
.value
1990 + h
->root
.u
.def
.section
->output_section
->vma
1991 + h
->root
.u
.def
.section
->output_offset
);
1992 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_COPY
);
1994 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1995 ((Elf32_External_Rela
*) s
->contents
2000 /* Mark some specially defined symbols as absolute. */
2001 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
2002 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
2003 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2004 sym
->st_shndx
= SHN_ABS
;
2009 /* Finish up the dynamic sections. */
2012 elf_s390_finish_dynamic_sections (output_bfd
, info
)
2014 struct bfd_link_info
*info
;
2020 dynobj
= elf_hash_table (info
)->dynobj
;
2022 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
2023 BFD_ASSERT (sgot
!= NULL
);
2024 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2026 if (elf_hash_table (info
)->dynamic_sections_created
)
2029 Elf32_External_Dyn
*dyncon
, *dynconend
;
2031 BFD_ASSERT (sdyn
!= NULL
);
2033 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
2034 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2035 for (; dyncon
< dynconend
; dyncon
++)
2037 Elf_Internal_Dyn dyn
;
2041 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2054 s
= bfd_get_section_by_name(output_bfd
, name
);
2055 BFD_ASSERT (s
!= NULL
);
2056 dyn
.d_un
.d_ptr
= s
->vma
;
2057 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2061 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
2062 BFD_ASSERT (s
!= NULL
);
2063 if (s
->_cooked_size
!= 0)
2064 dyn
.d_un
.d_val
= s
->_cooked_size
;
2066 dyn
.d_un
.d_val
= s
->_raw_size
;
2067 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2072 /* Fill in the special first entry in the procedure linkage table. */
2073 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2074 if (splt
&& splt
->_raw_size
> 0)
2076 memset (splt
->contents
, 0, PLT_FIRST_ENTRY_SIZE
);
2079 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD0
,
2081 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD1
,
2082 splt
->contents
+ 4 );
2083 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD2
,
2084 splt
->contents
+ 8 );
2085 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD3
,
2086 splt
->contents
+ 12 );
2087 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD4
,
2088 splt
->contents
+ 16 );
2092 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD0
,
2094 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD1
,
2095 splt
->contents
+ 4 );
2096 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD2
,
2097 splt
->contents
+ 8 );
2098 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD3
,
2099 splt
->contents
+ 12 );
2100 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD4
,
2101 splt
->contents
+ 16 );
2102 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD5
,
2103 splt
->contents
+ 20 );
2104 bfd_put_32 (output_bfd
,
2105 sgot
->output_section
->vma
+ sgot
->output_offset
,
2106 splt
->contents
+ 24);
2108 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
2113 /* Set the first entry in the global offset table to the address of
2114 the dynamic section. */
2115 if (sgot
->_raw_size
> 0)
2118 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
2120 bfd_put_32 (output_bfd
,
2121 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2124 /* One entry for shared object struct ptr. */
2125 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
2126 /* One entry for _dl_runtime_resolve. */
2127 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
2130 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
2136 elf_s390_object_p (abfd
)
2139 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_esa
);
2142 static enum elf_reloc_type_class
2143 elf_s390_reloc_type_class (rela
)
2144 const Elf_Internal_Rela
*rela
;
2146 switch ((int) ELF32_R_TYPE (rela
->r_info
))
2148 case R_390_RELATIVE
:
2149 return reloc_class_relative
;
2150 case R_390_JMP_SLOT
:
2151 return reloc_class_plt
;
2153 return reloc_class_copy
;
2155 return reloc_class_normal
;
2159 #define TARGET_BIG_SYM bfd_elf32_s390_vec
2160 #define TARGET_BIG_NAME "elf32-s390"
2161 #define ELF_ARCH bfd_arch_s390
2162 #define ELF_MACHINE_CODE EM_S390
2163 #define ELF_MACHINE_ALT1 EM_S390_OLD
2164 #define ELF_MAXPAGESIZE 0x1000
2166 #define elf_backend_can_gc_sections 1
2167 #define elf_backend_want_got_plt 1
2168 #define elf_backend_plt_readonly 1
2169 #define elf_backend_want_plt_sym 0
2170 #define elf_backend_got_header_size 12
2171 #define elf_backend_plt_header_size PLT_ENTRY_SIZE
2173 #define elf_info_to_howto elf_s390_info_to_howto
2175 #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
2176 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
2177 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
2178 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
2180 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
2181 #define elf_backend_check_relocs elf_s390_check_relocs
2182 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
2183 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
2184 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
2185 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
2186 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
2187 #define elf_backend_relocate_section elf_s390_relocate_section
2188 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
2189 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
2191 #define elf_backend_object_p elf_s390_object_p
2193 #include "elf32-target.h"