1 /* SPARC-specific support for 32-bit ELF
2 Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "elf/sparc.h"
27 static reloc_howto_type *elf32_sparc_reloc_type_lookup
28 PARAMS ((bfd *, bfd_reloc_code_real_type));
29 static void elf_info_to_howto
30 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
31 static boolean elf32_sparc_check_relocs
32 PARAMS ((bfd *, struct bfd_link_info *, asection *,
33 const Elf_Internal_Rela *));
34 static boolean elf32_sparc_adjust_dynamic_symbol
35 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
36 static boolean elf32_sparc_adjust_dynindx
37 PARAMS ((struct elf_link_hash_entry *, PTR));
38 static boolean elf32_sparc_size_dynamic_sections
39 PARAMS ((bfd *, struct bfd_link_info *));
40 static boolean elf32_sparc_relocate_section
41 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
42 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
43 static boolean elf32_sparc_finish_dynamic_symbol
44 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
46 static boolean elf32_sparc_finish_dynamic_sections
47 PARAMS ((bfd *, struct bfd_link_info *));
48 static boolean elf32_sparc_merge_private_bfd_data PARAMS ((bfd *, bfd *));
49 static boolean elf32_sparc_object_p
51 static void elf32_sparc_final_write_processing
52 PARAMS ((bfd *, boolean));
54 /* The howto table and associated functions.
55 ??? elf64-sparc.c has its own copy for the moment to ease transition
56 since some of the relocation values have changed. At some point we'll
57 want elf64-sparc.c to switch over and use this table.
58 ??? Do we want to recognize (or flag as errors) some of the 64 bit entries
59 if the target is elf32-sparc.
62 static bfd_reloc_status_type sparc_elf_notsupported_reloc
63 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
64 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
65 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
67 reloc_howto_type _bfd_sparc_elf_howto_table[] =
69 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
70 HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true),
71 HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true),
72 HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true),
73 HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true),
74 HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true),
75 HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true),
76 HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true),
77 HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true),
78 HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true),
79 HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true),
80 HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true),
81 HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true),
82 HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true),
83 HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true),
84 HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true),
85 HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true),
86 HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true),
87 HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true),
88 HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true),
89 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",false,0,0x00000000,true),
90 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",false,0,0x00000000,true),
91 HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true),
92 HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true),
93 HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PLT32", false,0,0x00000000,true),
94 HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true),
95 HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true),
96 HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true),
97 HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true),
98 HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true),
99 HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true),
100 HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true),
101 /* ??? If we need to handle R_SPARC_64 then we need (figuratively)
102 --enable-64-bit-bfd. That causes objdump to print address as 64 bits
103 which we really don't want on an elf32-sparc system. There may be other
104 consequences which we may not want (at least not until it's proven they're
105 necessary) so for now these are only enabled ifdef BFD64. */
107 HOWTO(R_SPARC_64, 0,4,00,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,~ (bfd_vma) 0, true),
108 /* ??? These don't make sense except in 64 bit systems so they're disabled
109 ifndef BFD64 too (for now). */
110 HOWTO(R_SPARC_OLO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_OLO10", false,0,0x000003ff,true),
111 HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
112 HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
113 HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
114 HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
115 HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
116 HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
118 HOWTO(R_SPARC_64, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", false,0,0x00000000,true),
119 HOWTO(R_SPARC_OLO10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", false,0,0x00000000,true),
120 HOWTO(R_SPARC_HH22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", false,0,0x00000000,true),
121 HOWTO(R_SPARC_HM10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", false,0,0x00000000,true),
122 HOWTO(R_SPARC_LM22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", false,0,0x00000000,true),
123 HOWTO(R_SPARC_PC_HH22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HH22", false,0,0x00000000,true),
124 HOWTO(R_SPARC_PC_HM10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HM10", false,0,0x00000000,true),
125 HOWTO(R_SPARC_PC_LM22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_LM22", false,0,0x00000000,true),
127 HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
128 HOWTO(R_SPARC_WDISP19, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
129 HOWTO(R_SPARC_GLOB_JMP, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",false,0,0x00000000,true),
130 HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true),
131 HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true),
132 HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true),
135 struct elf_reloc_map {
136 unsigned char bfd_reloc_val;
137 unsigned char elf_reloc_val;
140 static CONST struct elf_reloc_map sparc_reloc_map[] =
142 { BFD_RELOC_NONE, R_SPARC_NONE, },
143 { BFD_RELOC_16, R_SPARC_16, },
144 { BFD_RELOC_8, R_SPARC_8 },
145 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
146 /* ??? This might cause us to need separate functions in elf{32,64}-sparc.c
147 (we could still have just one table), but is this reloc ever used? */
148 { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */
149 { BFD_RELOC_32, R_SPARC_32 },
150 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
151 { BFD_RELOC_HI22, R_SPARC_HI22 },
152 { BFD_RELOC_LO10, R_SPARC_LO10, },
153 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
154 { BFD_RELOC_SPARC22, R_SPARC_22 },
155 { BFD_RELOC_SPARC13, R_SPARC_13 },
156 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
157 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
158 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
159 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
160 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
161 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
162 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
163 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
164 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
165 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
166 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
167 /* ??? Doesn't dwarf use this? */
168 /*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
169 {BFD_RELOC_SPARC_10, R_SPARC_10},
170 {BFD_RELOC_SPARC_11, R_SPARC_11},
171 {BFD_RELOC_SPARC_64, R_SPARC_64},
172 {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10},
173 {BFD_RELOC_SPARC_HH22, R_SPARC_HH22},
174 {BFD_RELOC_SPARC_HM10, R_SPARC_HM10},
175 {BFD_RELOC_SPARC_LM22, R_SPARC_LM22},
176 {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22},
177 {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10},
178 {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22},
179 {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16},
180 {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19},
181 {BFD_RELOC_SPARC_GLOB_JMP, R_SPARC_GLOB_JMP},
182 {BFD_RELOC_SPARC_7, R_SPARC_7},
183 {BFD_RELOC_SPARC_5, R_SPARC_5},
184 {BFD_RELOC_SPARC_6, R_SPARC_6},
187 static reloc_howto_type *
188 elf32_sparc_reloc_type_lookup (abfd, code)
190 bfd_reloc_code_real_type code;
193 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
195 if (sparc_reloc_map[i].bfd_reloc_val == code)
196 return &_bfd_sparc_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
201 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
202 and elf64-sparc.c has its own copy. */
205 elf_info_to_howto (abfd, cache_ptr, dst)
208 Elf_Internal_Rela *dst;
210 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max);
211 cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
214 /* For unsupported relocs. */
216 static bfd_reloc_status_type
217 sparc_elf_notsupported_reloc (abfd,
225 arelent *reloc_entry;
228 asection *input_section;
230 char **error_message;
232 return bfd_reloc_notsupported;
235 /* Handle the WDISP16 reloc. */
237 static bfd_reloc_status_type
238 sparc_elf_wdisp16_reloc (abfd,
246 arelent *reloc_entry;
249 asection *input_section;
251 char **error_message;
256 if (output_bfd != (bfd *) NULL
257 && (symbol->flags & BSF_SECTION_SYM) == 0
258 && (! reloc_entry->howto->partial_inplace
259 || reloc_entry->addend == 0))
261 reloc_entry->address += input_section->output_offset;
265 if (output_bfd != NULL)
266 return bfd_reloc_continue;
268 if (reloc_entry->address > input_section->_cooked_size)
269 return bfd_reloc_outofrange;
271 relocation = (symbol->value
272 + symbol->section->output_section->vma
273 + symbol->section->output_offset);
274 relocation += reloc_entry->addend;
275 relocation -= (input_section->output_section->vma
276 + input_section->output_offset);
277 relocation -= reloc_entry->address;
279 x = bfd_get_32 (abfd, (char *) data + reloc_entry->address);
280 x |= ((((relocation >> 2) & 0xc000) << 6)
281 | ((relocation >> 2) & 0x3fff));
282 bfd_put_32 (abfd, x, (char *) data + reloc_entry->address);
284 if ((bfd_signed_vma) relocation < - 0x40000
285 || (bfd_signed_vma) relocation > 0x3ffff)
286 return bfd_reloc_overflow;
291 /* Functions for the SPARC ELF linker. */
293 /* The name of the dynamic interpreter. This is put in the .interp
296 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
298 /* The nop opcode we use. */
300 #define SPARC_NOP 0x01000000
302 /* The size in bytes of an entry in the procedure linkage table. */
304 #define PLT_ENTRY_SIZE 12
306 /* The first four entries in a procedure linkage table are reserved,
307 and the initial contents are unimportant (we zero them out).
308 Subsequent entries look like this. See the SVR4 ABI SPARC
309 supplement to see how this works. */
311 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
312 #define PLT_ENTRY_WORD0 0x03000000
313 /* b,a .plt0. We fill in the offset later. */
314 #define PLT_ENTRY_WORD1 0x30800000
316 #define PLT_ENTRY_WORD2 SPARC_NOP
318 /* Look through the relocs for a section during the first phase, and
319 allocate space in the global offset table or procedure linkage
323 elf32_sparc_check_relocs (abfd, info, sec, relocs)
325 struct bfd_link_info *info;
327 const Elf_Internal_Rela *relocs;
330 Elf_Internal_Shdr *symtab_hdr;
331 struct elf_link_hash_entry **sym_hashes;
332 bfd_vma *local_got_offsets;
333 const Elf_Internal_Rela *rel;
334 const Elf_Internal_Rela *rel_end;
339 if (info->relocateable)
342 dynobj = elf_hash_table (info)->dynobj;
343 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
344 sym_hashes = elf_sym_hashes (abfd);
345 local_got_offsets = elf_local_got_offsets (abfd);
351 rel_end = relocs + sec->reloc_count;
352 for (rel = relocs; rel < rel_end; rel++)
354 unsigned long r_symndx;
355 struct elf_link_hash_entry *h;
357 r_symndx = ELF32_R_SYM (rel->r_info);
358 if (r_symndx < symtab_hdr->sh_info)
361 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
363 switch (ELF32_R_TYPE (rel->r_info))
368 /* This symbol requires a global offset table entry. */
372 /* Create the .got section. */
373 elf_hash_table (info)->dynobj = dynobj = abfd;
374 if (! _bfd_elf_create_got_section (dynobj, info))
380 sgot = bfd_get_section_by_name (dynobj, ".got");
381 BFD_ASSERT (sgot != NULL);
385 && (h != NULL || info->shared))
387 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
390 srelgot = bfd_make_section (dynobj, ".rela.got");
392 || ! bfd_set_section_flags (dynobj, srelgot,
398 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
405 if (h->got_offset != (bfd_vma) -1)
407 /* We have already allocated space in the .got. */
410 h->got_offset = sgot->_raw_size;
412 /* Make sure this symbol is output as a dynamic symbol. */
413 if (h->dynindx == -1)
415 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
419 srelgot->_raw_size += sizeof (Elf32_External_Rela);
423 /* This is a global offset table entry for a local
425 if (local_got_offsets == NULL)
428 register unsigned int i;
430 size = symtab_hdr->sh_info * sizeof (bfd_vma);
431 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
432 if (local_got_offsets == NULL)
434 elf_local_got_offsets (abfd) = local_got_offsets;
435 for (i = 0; i < symtab_hdr->sh_info; i++)
436 local_got_offsets[i] = (bfd_vma) -1;
438 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
440 /* We have already allocated space in the .got. */
443 local_got_offsets[r_symndx] = sgot->_raw_size;
447 /* If we are generating a shared object, we need to
448 output a R_SPARC_RELATIVE reloc so that the
449 dynamic linker can adjust this GOT entry. */
450 srelgot->_raw_size += sizeof (Elf32_External_Rela);
454 sgot->_raw_size += 4;
456 /* If the .got section is more than 0x1000 bytes, we add
457 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
458 bit relocations have a greater chance of working. */
459 if (sgot->_raw_size >= 0x1000
460 && elf_hash_table (info)->hgot->root.u.def.value == 0)
461 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
466 /* This symbol requires a procedure linkage table entry. We
467 actually build the entry in adjust_dynamic_symbol,
468 because this might be a case of linking PIC code without
469 linking in any dynamic objects, in which case we don't
470 need to generate a procedure linkage table after all. */
474 /* It does not make sense to have a procedure linkage
475 table entry for a local symbol. */
476 bfd_set_error (bfd_error_bad_value);
480 /* Make sure this symbol is output as a dynamic symbol. */
481 if (h->dynindx == -1)
483 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
487 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
494 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
500 case R_SPARC_WDISP30:
501 case R_SPARC_WDISP22:
502 case R_SPARC_WDISP19:
503 case R_SPARC_WDISP16:
516 && (sec->flags & SEC_ALLOC) != 0)
518 /* When creating a shared object, we must copy these
519 relocs into the output file. We create a reloc
520 section in dynobj and make room for the reloc. */
525 name = (bfd_elf_string_from_elf_section
527 elf_elfheader (abfd)->e_shstrndx,
528 elf_section_data (sec)->rel_hdr.sh_name));
532 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
533 && strcmp (bfd_get_section_name (abfd, sec),
536 sreloc = bfd_get_section_by_name (dynobj, name);
539 sreloc = bfd_make_section (dynobj, name);
541 || ! bfd_set_section_flags (dynobj, sreloc,
547 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
552 sreloc->_raw_size += sizeof (Elf32_External_Rela);
565 /* Adjust a symbol defined by a dynamic object and referenced by a
566 regular object. The current definition is in some section of the
567 dynamic object, but we're not including those sections. We have to
568 change the definition to something the rest of the link can
572 elf32_sparc_adjust_dynamic_symbol (info, h)
573 struct bfd_link_info *info;
574 struct elf_link_hash_entry *h;
578 unsigned int power_of_two;
580 dynobj = elf_hash_table (info)->dynobj;
582 /* Make sure we know what is going on here. */
583 BFD_ASSERT (dynobj != NULL
584 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
585 || h->weakdef != NULL
586 || ((h->elf_link_hash_flags
587 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
588 && (h->elf_link_hash_flags
589 & ELF_LINK_HASH_REF_REGULAR) != 0
590 && (h->elf_link_hash_flags
591 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
593 /* If this is a function, put it in the procedure linkage table. We
594 will fill in the contents of the procedure linkage table later
595 (although we could actually do it here). */
596 if (h->type == STT_FUNC
597 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
599 if (! elf_hash_table (info)->dynamic_sections_created)
601 /* This case can occur if we saw a WPLT30 reloc in an input
602 file, but none of the input files were dynamic objects.
603 In such a case, we don't actually need to build a
604 procedure linkage table, and we can just do a WDISP30
606 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
610 s = bfd_get_section_by_name (dynobj, ".plt");
611 BFD_ASSERT (s != NULL);
613 /* The first four entries in .plt are reserved. */
614 if (s->_raw_size == 0)
615 s->_raw_size = 4 * PLT_ENTRY_SIZE;
617 /* The procedure linkage table has a maximum size. */
618 if (s->_raw_size >= 0x400000)
620 bfd_set_error (bfd_error_bad_value);
624 /* If this symbol is not defined in a regular file, and we are
625 not generating a shared library, then set the symbol to this
626 location in the .plt. This is required to make function
627 pointers compare as equal between the normal executable and
628 the shared library. */
630 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
632 h->root.u.def.section = s;
633 h->root.u.def.value = s->_raw_size;
636 h->plt_offset = s->_raw_size;
638 /* Make room for this entry. */
639 s->_raw_size += PLT_ENTRY_SIZE;
641 /* We also need to make an entry in the .rela.plt section. */
643 s = bfd_get_section_by_name (dynobj, ".rela.plt");
644 BFD_ASSERT (s != NULL);
645 s->_raw_size += sizeof (Elf32_External_Rela);
650 /* If this is a weak symbol, and there is a real definition, the
651 processor independent code will have arranged for us to see the
652 real definition first, and we can just use the same value. */
653 if (h->weakdef != NULL)
655 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
656 || h->weakdef->root.type == bfd_link_hash_defweak);
657 h->root.u.def.section = h->weakdef->root.u.def.section;
658 h->root.u.def.value = h->weakdef->root.u.def.value;
662 /* This is a reference to a symbol defined by a dynamic object which
663 is not a function. */
665 /* If we are creating a shared library, we must presume that the
666 only references to the symbol are via the global offset table.
667 For such cases we need not do anything here; the relocations will
668 be handled correctly by relocate_section. */
672 /* We must allocate the symbol in our .dynbss section, which will
673 become part of the .bss section of the executable. There will be
674 an entry for this symbol in the .dynsym section. The dynamic
675 object will contain position independent code, so all references
676 from the dynamic object to this symbol will go through the global
677 offset table. The dynamic linker will use the .dynsym entry to
678 determine the address it must put in the global offset table, so
679 both the dynamic object and the regular object will refer to the
680 same memory location for the variable. */
682 s = bfd_get_section_by_name (dynobj, ".dynbss");
683 BFD_ASSERT (s != NULL);
685 /* If the symbol is currently defined in the .bss section of the
686 dynamic object, then it is OK to simply initialize it to zero.
687 If the symbol is in some other section, we must generate a
688 R_SPARC_COPY reloc to tell the dynamic linker to copy the initial
689 value out of the dynamic object and into the runtime process
690 image. We need to remember the offset into the .rel.bss section
691 we are going to use. */
692 if ((h->root.u.def.section->flags & SEC_LOAD) != 0)
696 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
697 BFD_ASSERT (srel != NULL);
698 srel->_raw_size += sizeof (Elf32_External_Rela);
699 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
702 /* We need to figure out the alignment required for this symbol. I
703 have no idea how ELF linkers handle this. */
704 power_of_two = bfd_log2 (h->size);
705 if (power_of_two > 3)
708 /* Apply the required alignment. */
709 s->_raw_size = BFD_ALIGN (s->_raw_size,
710 (bfd_size_type) (1 << power_of_two));
711 if (power_of_two > bfd_get_section_alignment (dynobj, s))
713 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
717 /* Define the symbol as being at this point in the section. */
718 h->root.u.def.section = s;
719 h->root.u.def.value = s->_raw_size;
721 /* Increment the section size to make room for the symbol. */
722 s->_raw_size += h->size;
727 /* Set the sizes of the dynamic sections. */
730 elf32_sparc_size_dynamic_sections (output_bfd, info)
732 struct bfd_link_info *info;
739 dynobj = elf_hash_table (info)->dynobj;
740 BFD_ASSERT (dynobj != NULL);
742 if (elf_hash_table (info)->dynamic_sections_created)
744 /* Set the contents of the .interp section to the interpreter. */
747 s = bfd_get_section_by_name (dynobj, ".interp");
748 BFD_ASSERT (s != NULL);
749 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
750 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
753 /* Make space for the trailing nop in .plt. */
754 s = bfd_get_section_by_name (dynobj, ".plt");
755 BFD_ASSERT (s != NULL);
756 if (s->_raw_size > 0)
761 /* We may have created entries in the .rela.got section.
762 However, if we are not creating the dynamic sections, we will
763 not actually use these entries. Reset the size of .rela.got,
764 which will cause it to get stripped from the output file
766 s = bfd_get_section_by_name (dynobj, ".rela.got");
771 /* The check_relocs and adjust_dynamic_symbol entry points have
772 determined the sizes of the various dynamic sections. Allocate
776 for (s = dynobj->sections; s != NULL; s = s->next)
781 if ((s->flags & SEC_IN_MEMORY) == 0)
784 /* It's OK to base decisions on the section name, because none
785 of the dynobj section names depend upon the input files. */
786 name = bfd_get_section_name (dynobj, s);
790 if (strncmp (name, ".rela", 5) == 0)
792 if (s->_raw_size == 0)
794 /* If we don't need this section, strip it from the
795 output file. This is to handle .rela.bss and
796 .rel.plt. We must create it in
797 create_dynamic_sections, because it must be created
798 before the linker maps input sections to output
799 sections. The linker does that before
800 adjust_dynamic_symbol is called, and it is that
801 function which decides whether anything needs to go
802 into these sections. */
809 /* If this relocation section applies to a read only
810 section, then we probably need a DT_TEXTREL entry. */
811 target = bfd_get_section_by_name (output_bfd, name + 5);
813 && (target->flags & SEC_READONLY) != 0)
816 if (strcmp (name, ".rela.plt") == 0)
819 /* We use the reloc_count field as a counter if we need
820 to copy relocs into the output file. */
824 else if (strcmp (name, ".plt") != 0
825 && strcmp (name, ".got") != 0)
827 /* It's not one of our sections, so don't allocate space. */
835 for (spp = &s->output_section->owner->sections;
836 *spp != s->output_section;
839 *spp = s->output_section->next;
840 --s->output_section->owner->section_count;
845 /* Allocate memory for the section contents. */
846 s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
847 if (s->contents == NULL && s->_raw_size != 0)
851 if (elf_hash_table (info)->dynamic_sections_created)
853 /* Add some entries to the .dynamic section. We fill in the
854 values later, in elf32_sparc_finish_dynamic_sections, but we
855 must add the entries now so that we get the correct size for
856 the .dynamic section. The DT_DEBUG entry is filled in by the
857 dynamic linker and used by the debugger. */
860 if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
864 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
869 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
870 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
871 || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
875 if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
876 || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
877 || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
878 sizeof (Elf32_External_Rela)))
883 if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
888 /* If we are generating a shared library, we generate a section
889 symbol for each output section. These are local symbols, which
890 means that they must come first in the dynamic symbol table.
891 That means we must increment the dynamic symbol index of every
892 other dynamic symbol. */
897 c = bfd_count_sections (output_bfd);
898 elf_link_hash_traverse (elf_hash_table (info),
899 elf32_sparc_adjust_dynindx,
901 elf_hash_table (info)->dynsymcount += c;
903 for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
905 elf_section_data (s)->dynindx = i;
906 /* These symbols will have no names, so we don't need to
907 fiddle with dynstr_index. */
914 /* Increment the index of a dynamic symbol by a given amount. Called
915 via elf_link_hash_traverse. */
918 elf32_sparc_adjust_dynindx (h, cparg)
919 struct elf_link_hash_entry *h;
922 int *cp = (int *) cparg;
924 if (h->dynindx != -1)
929 /* Relocate a SPARC ELF section. */
932 elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
933 contents, relocs, local_syms, local_sections)
935 struct bfd_link_info *info;
937 asection *input_section;
939 Elf_Internal_Rela *relocs;
940 Elf_Internal_Sym *local_syms;
941 asection **local_sections;
944 Elf_Internal_Shdr *symtab_hdr;
945 struct elf_link_hash_entry **sym_hashes;
946 bfd_vma *local_got_offsets;
951 Elf_Internal_Rela *rel;
952 Elf_Internal_Rela *relend;
954 dynobj = elf_hash_table (info)->dynobj;
955 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
956 sym_hashes = elf_sym_hashes (input_bfd);
957 local_got_offsets = elf_local_got_offsets (input_bfd);
959 if (elf_hash_table (info)->hgot == NULL)
962 got_base = elf_hash_table (info)->hgot->root.u.def.value;
969 relend = relocs + input_section->reloc_count;
970 for (; rel < relend; rel++)
973 reloc_howto_type *howto;
974 unsigned long r_symndx;
975 struct elf_link_hash_entry *h;
976 Elf_Internal_Sym *sym;
979 bfd_reloc_status_type r;
981 r_type = ELF32_R_TYPE (rel->r_info);
982 if (r_type < 0 || r_type >= (int) R_SPARC_max)
984 bfd_set_error (bfd_error_bad_value);
987 howto = _bfd_sparc_elf_howto_table + r_type;
989 r_symndx = ELF32_R_SYM (rel->r_info);
991 if (info->relocateable)
993 /* This is a relocateable link. We don't have to change
994 anything, unless the reloc is against a section symbol,
995 in which case we have to adjust according to where the
996 section symbol winds up in the output section. */
997 if (r_symndx < symtab_hdr->sh_info)
999 sym = local_syms + r_symndx;
1000 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1002 sec = local_sections[r_symndx];
1003 rel->r_addend += sec->output_offset + sym->st_value;
1010 /* This is a final link. */
1014 if (r_symndx < symtab_hdr->sh_info)
1016 sym = local_syms + r_symndx;
1017 sec = local_sections[r_symndx];
1018 relocation = (sec->output_section->vma
1019 + sec->output_offset
1024 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1025 while (h->root.type == bfd_link_hash_indirect
1026 || h->root.type == bfd_link_hash_warning)
1027 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1028 if (h->root.type == bfd_link_hash_defined
1029 || h->root.type == bfd_link_hash_defweak)
1031 sec = h->root.u.def.section;
1032 if ((r_type == R_SPARC_WPLT30
1033 && h->plt_offset != (bfd_vma) -1)
1034 || ((r_type == R_SPARC_GOT10
1035 || r_type == R_SPARC_GOT13
1036 || r_type == R_SPARC_GOT22)
1037 && elf_hash_table (info)->dynamic_sections_created
1040 || (h->elf_link_hash_flags
1041 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1043 && (! info->symbolic
1044 || (h->elf_link_hash_flags
1045 & ELF_LINK_HASH_DEF_REGULAR) == 0)
1046 && (input_section->flags & SEC_ALLOC) != 0
1047 && (r_type == R_SPARC_8
1048 || r_type == R_SPARC_16
1049 || r_type == R_SPARC_32
1050 || r_type == R_SPARC_DISP8
1051 || r_type == R_SPARC_DISP16
1052 || r_type == R_SPARC_DISP32
1053 || r_type == R_SPARC_WDISP30
1054 || r_type == R_SPARC_WDISP22
1055 || r_type == R_SPARC_WDISP19
1056 || r_type == R_SPARC_WDISP16
1057 || r_type == R_SPARC_HI22
1058 || r_type == R_SPARC_22
1059 || r_type == R_SPARC_13
1060 || r_type == R_SPARC_LO10
1061 || r_type == R_SPARC_UA32
1062 || ((r_type == R_SPARC_PC10
1063 || r_type == R_SPARC_PC22)
1064 && strcmp (h->root.root.string,
1065 "_GLOBAL_OFFSET_TABLE_") != 0))))
1067 /* In these cases, we don't need the relocation
1068 value. We check specially because in some
1069 obscure cases sec->output_section will be NULL. */
1073 relocation = (h->root.u.def.value
1074 + sec->output_section->vma
1075 + sec->output_offset);
1077 else if (h->root.type == bfd_link_hash_undefweak)
1079 else if (info->shared && !info->symbolic)
1083 if (! ((*info->callbacks->undefined_symbol)
1084 (info, h->root.root.string, input_bfd,
1085 input_section, rel->r_offset)))
1096 /* Relocation is to the entry for this symbol in the global
1100 sgot = bfd_get_section_by_name (dynobj, ".got");
1101 BFD_ASSERT (sgot != NULL);
1108 off = h->got_offset;
1109 BFD_ASSERT (off != (bfd_vma) -1);
1111 if (! elf_hash_table (info)->dynamic_sections_created
1114 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
1116 /* This is actually a static link, or it is a
1117 -Bsymbolic link and the symbol is defined
1118 locally. We must initialize this entry in the
1119 global offset table. Since the offset must
1120 always be a multiple of 4, we use the least
1121 significant bit to record whether we have
1122 initialized it already.
1124 When doing a dynamic link, we create a .rela.got
1125 relocation entry to initialize the value. This
1126 is done in the finish_dynamic_symbol routine. */
1131 bfd_put_32 (output_bfd, relocation,
1132 sgot->contents + off);
1137 relocation = sgot->output_offset + off - got_base;
1143 BFD_ASSERT (local_got_offsets != NULL
1144 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1146 off = local_got_offsets[r_symndx];
1148 /* The offset must always be a multiple of 4. We use
1149 the least significant bit to record whether we have
1150 already processed this entry. */
1155 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1160 Elf_Internal_Rela outrel;
1162 /* We need to generate a R_SPARC_RELATIVE reloc
1163 for the dynamic linker. */
1164 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1165 BFD_ASSERT (srelgot != NULL);
1167 outrel.r_offset = (sgot->output_section->vma
1168 + sgot->output_offset
1170 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
1171 outrel.r_addend = 0;
1172 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1173 (((Elf32_External_Rela *)
1175 + srelgot->reloc_count));
1176 ++srelgot->reloc_count;
1179 local_got_offsets[r_symndx] |= 1;
1182 relocation = sgot->output_offset + off - got_base;
1187 case R_SPARC_WPLT30:
1188 /* Relocation is to the entry for this symbol in the
1189 procedure linkage table. */
1190 BFD_ASSERT (h != NULL);
1192 if (h->plt_offset == (bfd_vma) -1)
1194 /* We didn't make a PLT entry for this symbol. This
1195 happens when statically linking PIC code, or when
1196 using -Bsymbolic. */
1202 splt = bfd_get_section_by_name (dynobj, ".plt");
1203 BFD_ASSERT (splt != NULL);
1206 relocation = (splt->output_section->vma
1207 + splt->output_offset
1214 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1218 case R_SPARC_DISP16:
1219 case R_SPARC_DISP32:
1220 case R_SPARC_WDISP30:
1221 case R_SPARC_WDISP22:
1222 case R_SPARC_WDISP19:
1223 case R_SPARC_WDISP16:
1236 && (input_section->flags & SEC_ALLOC) != 0)
1238 Elf_Internal_Rela outrel;
1240 /* When generating a shared object, these relocations
1241 are copied into the output file to be resolved at run
1248 name = (bfd_elf_string_from_elf_section
1250 elf_elfheader (input_bfd)->e_shstrndx,
1251 elf_section_data (input_section)->rel_hdr.sh_name));
1255 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1256 && strcmp (bfd_get_section_name (input_bfd,
1260 sreloc = bfd_get_section_by_name (dynobj, name);
1261 BFD_ASSERT (sreloc != NULL);
1264 outrel.r_offset = (rel->r_offset
1265 + input_section->output_section->vma
1266 + input_section->output_offset);
1268 && (! info->symbolic
1269 || (h->elf_link_hash_flags
1270 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1272 BFD_ASSERT (h->dynindx != -1);
1273 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1274 outrel.r_addend = rel->r_addend;
1278 if (r_type == R_SPARC_32)
1280 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
1281 outrel.r_addend = relocation + rel->r_addend;
1288 sec = local_sections[r_symndx];
1291 BFD_ASSERT (h->root.type == bfd_link_hash_defined
1293 == bfd_link_hash_defweak));
1294 sec = h->root.u.def.section;
1296 if (sec != NULL && bfd_is_abs_section (sec))
1298 else if (sec == NULL || sec->owner == NULL)
1300 bfd_set_error (bfd_error_bad_value);
1307 osec = sec->output_section;
1308 indx = elf_section_data (osec)->dynindx;
1313 outrel.r_info = ELF32_R_INFO (indx, r_type);
1314 outrel.r_addend = relocation + rel->r_addend;
1318 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1319 (((Elf32_External_Rela *)
1321 + sreloc->reloc_count));
1322 ++sreloc->reloc_count;
1324 /* This reloc will be computed at runtime, so there's no
1325 need to do anything now. */
1333 if (r_type != R_SPARC_WDISP16)
1334 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1335 contents, rel->r_offset,
1336 relocation, rel->r_addend);
1341 relocation += rel->r_addend;
1342 relocation -= (input_section->output_section->vma
1343 + input_section->output_offset);
1344 relocation -= rel->r_offset;
1346 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
1347 x |= ((((relocation >> 2) & 0xc000) << 6)
1348 | ((relocation >> 2) & 0x3fff));
1349 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
1351 if ((bfd_signed_vma) relocation < - 0x40000
1352 || (bfd_signed_vma) relocation > 0x3ffff)
1353 r = bfd_reloc_overflow;
1358 if (r != bfd_reloc_ok)
1363 case bfd_reloc_outofrange:
1365 case bfd_reloc_overflow:
1370 name = h->root.root.string;
1373 name = bfd_elf_string_from_elf_section (input_bfd,
1374 symtab_hdr->sh_link,
1379 name = bfd_section_name (input_bfd, sec);
1381 if (! ((*info->callbacks->reloc_overflow)
1382 (info, name, howto->name, (bfd_vma) 0,
1383 input_bfd, input_section, rel->r_offset)))
1394 /* Finish up dynamic symbol handling. We set the contents of various
1395 dynamic sections here. */
1398 elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym)
1400 struct bfd_link_info *info;
1401 struct elf_link_hash_entry *h;
1402 Elf_Internal_Sym *sym;
1406 dynobj = elf_hash_table (info)->dynobj;
1408 if (h->plt_offset != (bfd_vma) -1)
1412 Elf_Internal_Rela rela;
1414 /* This symbol has an entry in the procedure linkage table. Set
1417 BFD_ASSERT (h->dynindx != -1);
1419 splt = bfd_get_section_by_name (dynobj, ".plt");
1420 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
1421 BFD_ASSERT (splt != NULL && srela != NULL);
1423 /* Fill in the entry in the procedure linkage table. */
1424 bfd_put_32 (output_bfd,
1425 PLT_ENTRY_WORD0 + h->plt_offset,
1426 splt->contents + h->plt_offset);
1427 bfd_put_32 (output_bfd,
1429 + (((- (h->plt_offset + 4)) >> 2) & 0x3fffff)),
1430 splt->contents + h->plt_offset + 4);
1431 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
1432 splt->contents + h->plt_offset + 8);
1434 /* Fill in the entry in the .rela.plt section. */
1435 rela.r_offset = (splt->output_section->vma
1436 + splt->output_offset
1438 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
1440 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1441 ((Elf32_External_Rela *) srela->contents
1442 + h->plt_offset / PLT_ENTRY_SIZE - 4));
1444 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1446 /* Mark the symbol as undefined, rather than as defined in
1447 the .plt section. Leave the value alone. */
1448 sym->st_shndx = SHN_UNDEF;
1452 if (h->got_offset != (bfd_vma) -1)
1456 Elf_Internal_Rela rela;
1458 /* This symbol has an entry in the global offset table. Set it
1461 BFD_ASSERT (h->dynindx != -1);
1463 sgot = bfd_get_section_by_name (dynobj, ".got");
1464 srela = bfd_get_section_by_name (dynobj, ".rela.got");
1465 BFD_ASSERT (sgot != NULL && srela != NULL);
1467 rela.r_offset = (sgot->output_section->vma
1468 + sgot->output_offset
1469 + (h->got_offset &~ 1));
1471 /* If this is a -Bsymbolic link, and the symbol is defined
1472 locally, we just want to emit a RELATIVE reloc. The entry in
1473 the global offset table will already have been initialized in
1474 the relocate_section function. */
1477 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
1478 rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
1481 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got_offset);
1482 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
1486 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1487 ((Elf32_External_Rela *) srela->contents
1488 + srela->reloc_count));
1489 ++srela->reloc_count;
1492 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
1495 Elf_Internal_Rela rela;
1497 /* This symbols needs a copy reloc. Set it up. */
1499 BFD_ASSERT (h->dynindx != -1);
1501 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1503 BFD_ASSERT (s != NULL);
1505 rela.r_offset = (h->root.u.def.value
1506 + h->root.u.def.section->output_section->vma
1507 + h->root.u.def.section->output_offset);
1508 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY);
1510 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1511 ((Elf32_External_Rela *) s->contents
1516 /* Mark some specially defined symbols as absolute. */
1517 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1518 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
1519 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
1520 sym->st_shndx = SHN_ABS;
1525 /* Finish up the dynamic sections. */
1528 elf32_sparc_finish_dynamic_sections (output_bfd, info)
1530 struct bfd_link_info *info;
1536 dynobj = elf_hash_table (info)->dynobj;
1538 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1540 if (elf_hash_table (info)->dynamic_sections_created)
1543 Elf32_External_Dyn *dyncon, *dynconend;
1545 splt = bfd_get_section_by_name (dynobj, ".plt");
1546 BFD_ASSERT (splt != NULL && sdyn != NULL);
1548 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1549 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
1550 for (; dyncon < dynconend; dyncon++)
1552 Elf_Internal_Dyn dyn;
1556 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1560 case DT_PLTGOT: name = ".plt"; size = false; break;
1561 case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
1562 case DT_JMPREL: name = ".rela.plt"; size = false; break;
1563 default: name = NULL; size = false; break;
1570 s = bfd_get_section_by_name (output_bfd, name);
1576 dyn.d_un.d_ptr = s->vma;
1579 if (s->_cooked_size != 0)
1580 dyn.d_un.d_val = s->_cooked_size;
1582 dyn.d_un.d_val = s->_raw_size;
1585 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1589 /* Clear the first four entries in the procedure linkage table,
1590 and put a nop in the last four bytes. */
1591 if (splt->_raw_size > 0)
1593 memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
1594 bfd_put_32 (output_bfd, SPARC_NOP,
1595 splt->contents + splt->_raw_size - 4);
1598 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
1602 /* Set the first entry in the global offset table to the address of
1603 the dynamic section. */
1604 sgot = bfd_get_section_by_name (dynobj, ".got");
1605 BFD_ASSERT (sgot != NULL);
1606 if (sgot->_raw_size > 0)
1609 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1611 bfd_put_32 (output_bfd,
1612 sdyn->output_section->vma + sdyn->output_offset,
1616 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1622 Elf_Internal_Sym sym;
1624 /* Set up the section symbols for the output sections. */
1626 sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
1627 BFD_ASSERT (sdynsym != NULL);
1631 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
1634 for (s = output_bfd->sections; s != NULL; s = s->next)
1638 sym.st_value = s->vma;
1640 indx = elf_section_data (s)->this_idx;
1641 BFD_ASSERT (indx > 0);
1642 sym.st_shndx = indx;
1644 bfd_elf32_swap_symbol_out (output_bfd, &sym,
1645 (PTR) (((Elf32_External_Sym *)
1647 + elf_section_data (s)->dynindx));
1650 /* Set the sh_info field of the output .dynsym section to the
1651 index of the first global symbol. */
1652 elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
1653 bfd_count_sections (output_bfd) + 1;
1659 /* Functions for dealing with the e_flags field.
1661 We don't define set_private_flags or copy_private_bfd_data because
1662 the only currently defined values are based on the bfd mach number,
1663 so we use the latter instead and defer setting e_flags until the
1664 file is written out. */
1666 /* Merge backend specific data from an object file to the output
1667 object file when linking. */
1670 elf32_sparc_merge_private_bfd_data (ibfd, obfd)
1676 /* This function is selected based on the input vector. We only
1677 want to copy information over if the output BFD also uses Elf
1679 if (bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1685 /* ??? The native linker doesn't do this so we can't (otherwise gcc would
1686 have to know which linker is being used). Instead, the native linker
1687 bumps up the architecture level when it has to. However, I still think
1688 warnings like these are good, so it would be nice to have them turned on
1691 /* If the output machine is normal sparc, we can't allow v9 input files. */
1692 if (bfd_get_mach (obfd) == bfd_mach_sparc
1693 && (bfd_get_mach (ibfd) == bfd_mach_sparc_v8plus
1694 || bfd_get_mach (ibfd) == bfd_mach_sparc_v8plusa))
1697 (*_bfd_error_handler)
1698 ("%s: compiled for a v8plus system and target is v8",
1699 bfd_get_filename (ibfd));
1701 /* If the output machine is v9, we can't allow v9+vis input files. */
1702 if (bfd_get_mach (obfd) == bfd_mach_sparc_v8plus
1703 && bfd_get_mach (ibfd) == bfd_mach_sparc_v8plusa)
1706 (*_bfd_error_handler)
1707 ("%s: compiled for a v8plusa system and target is v8plus",
1708 bfd_get_filename (ibfd));
1711 if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9)
1714 (*_bfd_error_handler)
1715 ("%s: compiled for a 64 bit system and target is 32 bit",
1716 bfd_get_filename (ibfd));
1718 else if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
1719 bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
1724 bfd_set_error (bfd_error_bad_value);
1731 /* Set the right machine number. */
1734 elf32_sparc_object_p (abfd)
1737 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
1739 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
1740 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
1741 bfd_mach_sparc_v8plusa);
1742 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
1743 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
1744 bfd_mach_sparc_v8plus);
1749 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
1752 /* The final processing done just before writing out the object file.
1753 We need to set the e_machine field appropriately. */
1756 elf32_sparc_final_write_processing (abfd, linker)
1760 switch (bfd_get_mach (abfd))
1762 case bfd_mach_sparc :
1763 break; /* nothing to do */
1764 case bfd_mach_sparc_v8plus :
1765 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
1766 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
1767 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
1769 case bfd_mach_sparc_v8plusa :
1770 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
1771 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
1772 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
1779 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
1780 #define TARGET_BIG_NAME "elf32-sparc"
1781 #define ELF_ARCH bfd_arch_sparc
1782 #define ELF_MACHINE_CODE EM_SPARC
1783 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
1784 #define ELF_MAXPAGESIZE 0x10000
1786 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
1787 #define elf_backend_create_dynamic_sections \
1788 _bfd_elf_create_dynamic_sections
1789 #define elf_backend_check_relocs elf32_sparc_check_relocs
1790 #define elf_backend_adjust_dynamic_symbol \
1791 elf32_sparc_adjust_dynamic_symbol
1792 #define elf_backend_size_dynamic_sections \
1793 elf32_sparc_size_dynamic_sections
1794 #define elf_backend_relocate_section elf32_sparc_relocate_section
1795 #define elf_backend_finish_dynamic_symbol \
1796 elf32_sparc_finish_dynamic_symbol
1797 #define elf_backend_finish_dynamic_sections \
1798 elf32_sparc_finish_dynamic_sections
1799 #define bfd_elf32_bfd_merge_private_bfd_data \
1800 elf32_sparc_merge_private_bfd_data
1801 #define elf_backend_object_p elf32_sparc_object_p
1802 #define elf_backend_final_write_processing \
1803 elf32_sparc_final_write_processing
1804 #define elf_backend_want_got_plt 0
1805 #define elf_backend_plt_readonly 0
1806 #define elf_backend_want_plt_sym 1
1808 #include "elf32-target.h"