* elf32-mips.c (mips_elf_obtain_contents): Swap the 16-bit
[binutils.git] / bfd / elf32-sparc.c
blob2118c7002726c466727d212ae4a904d56cad8e8a
1 /* SPARC-specific support for 32-bit ELF
2 Copyright (C) 1993, 94, 95, 96, 97, 98, 1999 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. */
20 #include "bfd.h"
21 #include "sysdep.h"
22 #include "bfdlink.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
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 elf32_sparc_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_size_dynamic_sections
37 PARAMS ((bfd *, struct bfd_link_info *));
38 static boolean elf32_sparc_relocate_section
39 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
40 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
41 static boolean elf32_sparc_finish_dynamic_symbol
42 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
43 Elf_Internal_Sym *));
44 static boolean elf32_sparc_finish_dynamic_sections
45 PARAMS ((bfd *, struct bfd_link_info *));
46 static boolean elf32_sparc_merge_private_bfd_data PARAMS ((bfd *, bfd *));
47 static boolean elf32_sparc_object_p
48 PARAMS ((bfd *));
49 static void elf32_sparc_final_write_processing
50 PARAMS ((bfd *, boolean));
52 /* The relocation "howto" table. */
54 static bfd_reloc_status_type sparc_elf_notsupported_reloc
55 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
56 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
57 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
59 reloc_howto_type _bfd_sparc_elf_howto_table[] =
61 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
62 HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true),
63 HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true),
64 HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true),
65 HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true),
66 HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true),
67 HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true),
68 HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true),
69 HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true),
70 HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true),
71 HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true),
72 HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true),
73 HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true),
74 HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true),
75 HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true),
76 HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true),
77 HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true),
78 HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true),
79 HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true),
80 HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true),
81 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),
82 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),
83 HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true),
84 HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true),
85 HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PLT32", false,0,0x00000000,true),
86 HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true),
87 HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true),
88 HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true),
89 HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true),
90 HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true),
91 HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true),
92 HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true),
93 /* These are for sparc64 in a 64 bit environment.
94 Values need to be here because the table is indexed by reloc number. */
95 HOWTO(R_SPARC_64, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", false,0,0x00000000,true),
96 HOWTO(R_SPARC_OLO10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", false,0,0x00000000,true),
97 HOWTO(R_SPARC_HH22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", false,0,0x00000000,true),
98 HOWTO(R_SPARC_HM10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", false,0,0x00000000,true),
99 HOWTO(R_SPARC_LM22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", false,0,0x00000000,true),
100 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),
101 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),
102 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),
103 /* End sparc64 in 64 bit environment values.
104 The following are for sparc64 in a 32 bit environment. */
105 HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
106 HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
107 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",false,0,0x00000000,true),
108 HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true),
109 HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true),
110 HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true),
111 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
112 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
113 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
114 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
115 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
116 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
117 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
118 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
119 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
120 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
121 HOWTO(R_SPARC_REV32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", false,0,0xffffffff,true),
123 static reloc_howto_type elf32_sparc_vtinherit_howto =
124 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,false,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", false,0, 0, false);
125 static reloc_howto_type elf32_sparc_vtentry_howto =
126 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,false,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", false,0,0, false);
129 struct elf_reloc_map {
130 bfd_reloc_code_real_type bfd_reloc_val;
131 unsigned char elf_reloc_val;
134 static CONST struct elf_reloc_map sparc_reloc_map[] =
136 { BFD_RELOC_NONE, R_SPARC_NONE, },
137 { BFD_RELOC_16, R_SPARC_16, },
138 { BFD_RELOC_8, R_SPARC_8 },
139 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
140 { BFD_RELOC_CTOR, R_SPARC_32 },
141 { BFD_RELOC_32, R_SPARC_32 },
142 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
143 { BFD_RELOC_HI22, R_SPARC_HI22 },
144 { BFD_RELOC_LO10, R_SPARC_LO10, },
145 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
146 { BFD_RELOC_SPARC22, R_SPARC_22 },
147 { BFD_RELOC_SPARC13, R_SPARC_13 },
148 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
149 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
150 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
151 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
152 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
153 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
154 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
155 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
156 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
157 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
158 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
159 /* ??? Doesn't dwarf use this? */
160 /*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
161 {BFD_RELOC_SPARC_10, R_SPARC_10},
162 {BFD_RELOC_SPARC_11, R_SPARC_11},
163 {BFD_RELOC_SPARC_64, R_SPARC_64},
164 {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10},
165 {BFD_RELOC_SPARC_HH22, R_SPARC_HH22},
166 {BFD_RELOC_SPARC_HM10, R_SPARC_HM10},
167 {BFD_RELOC_SPARC_LM22, R_SPARC_LM22},
168 {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22},
169 {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10},
170 {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22},
171 {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16},
172 {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19},
173 {BFD_RELOC_SPARC_7, R_SPARC_7},
174 {BFD_RELOC_SPARC_5, R_SPARC_5},
175 {BFD_RELOC_SPARC_6, R_SPARC_6},
176 {BFD_RELOC_SPARC_REV32, R_SPARC_REV32 },
177 {BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT},
178 {BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY},
181 static reloc_howto_type *
182 elf32_sparc_reloc_type_lookup (abfd, code)
183 bfd *abfd ATTRIBUTE_UNUSED;
184 bfd_reloc_code_real_type code;
186 unsigned int i;
188 switch (code)
190 case BFD_RELOC_VTABLE_INHERIT:
191 return &elf32_sparc_vtinherit_howto;
193 case BFD_RELOC_VTABLE_ENTRY:
194 return &elf32_sparc_vtentry_howto;
196 default:
197 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
199 if (sparc_reloc_map[i].bfd_reloc_val == code)
200 return &_bfd_sparc_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
203 bfd_set_error (bfd_error_bad_value);
204 return NULL;
207 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
208 and elf64-sparc.c has its own copy. */
210 static void
211 elf32_sparc_info_to_howto (abfd, cache_ptr, dst)
212 bfd *abfd ATTRIBUTE_UNUSED;
213 arelent *cache_ptr;
214 Elf_Internal_Rela *dst;
216 switch (ELF32_R_TYPE(dst->r_info))
218 case R_SPARC_GNU_VTINHERIT:
219 cache_ptr->howto = &elf32_sparc_vtinherit_howto;
220 break;
222 case R_SPARC_GNU_VTENTRY:
223 cache_ptr->howto = &elf32_sparc_vtentry_howto;
224 break;
226 default:
227 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std);
228 cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
232 /* For unsupported relocs. */
234 static bfd_reloc_status_type
235 sparc_elf_notsupported_reloc (abfd,
236 reloc_entry,
237 symbol,
238 data,
239 input_section,
240 output_bfd,
241 error_message)
242 bfd *abfd ATTRIBUTE_UNUSED;
243 arelent *reloc_entry ATTRIBUTE_UNUSED;
244 asymbol *symbol ATTRIBUTE_UNUSED;
245 PTR data ATTRIBUTE_UNUSED;
246 asection *input_section ATTRIBUTE_UNUSED;
247 bfd *output_bfd ATTRIBUTE_UNUSED;
248 char **error_message ATTRIBUTE_UNUSED;
250 return bfd_reloc_notsupported;
253 /* Handle the WDISP16 reloc. */
255 static bfd_reloc_status_type
256 sparc_elf_wdisp16_reloc (abfd,
257 reloc_entry,
258 symbol,
259 data,
260 input_section,
261 output_bfd,
262 error_message)
263 bfd *abfd;
264 arelent *reloc_entry;
265 asymbol *symbol;
266 PTR data;
267 asection *input_section;
268 bfd *output_bfd;
269 char **error_message ATTRIBUTE_UNUSED;
271 bfd_vma relocation;
272 bfd_vma x;
274 if (output_bfd != (bfd *) NULL
275 && (symbol->flags & BSF_SECTION_SYM) == 0
276 && (! reloc_entry->howto->partial_inplace
277 || reloc_entry->addend == 0))
279 reloc_entry->address += input_section->output_offset;
280 return bfd_reloc_ok;
283 if (output_bfd != NULL)
284 return bfd_reloc_continue;
286 if (reloc_entry->address > input_section->_cooked_size)
287 return bfd_reloc_outofrange;
289 relocation = (symbol->value
290 + symbol->section->output_section->vma
291 + symbol->section->output_offset);
292 relocation += reloc_entry->addend;
293 relocation -= (input_section->output_section->vma
294 + input_section->output_offset);
295 relocation -= reloc_entry->address;
297 x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
298 x |= ((((relocation >> 2) & 0xc000) << 6)
299 | ((relocation >> 2) & 0x3fff));
300 bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
302 if ((bfd_signed_vma) relocation < - 0x40000
303 || (bfd_signed_vma) relocation > 0x3ffff)
304 return bfd_reloc_overflow;
305 else
306 return bfd_reloc_ok;
309 /* Functions for the SPARC ELF linker. */
311 /* The name of the dynamic interpreter. This is put in the .interp
312 section. */
314 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
316 /* The nop opcode we use. */
318 #define SPARC_NOP 0x01000000
320 /* The size in bytes of an entry in the procedure linkage table. */
322 #define PLT_ENTRY_SIZE 12
324 /* The first four entries in a procedure linkage table are reserved,
325 and the initial contents are unimportant (we zero them out).
326 Subsequent entries look like this. See the SVR4 ABI SPARC
327 supplement to see how this works. */
329 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
330 #define PLT_ENTRY_WORD0 0x03000000
331 /* b,a .plt0. We fill in the offset later. */
332 #define PLT_ENTRY_WORD1 0x30800000
333 /* nop. */
334 #define PLT_ENTRY_WORD2 SPARC_NOP
336 /* Look through the relocs for a section during the first phase, and
337 allocate space in the global offset table or procedure linkage
338 table. */
340 static boolean
341 elf32_sparc_check_relocs (abfd, info, sec, relocs)
342 bfd *abfd;
343 struct bfd_link_info *info;
344 asection *sec;
345 const Elf_Internal_Rela *relocs;
347 bfd *dynobj;
348 Elf_Internal_Shdr *symtab_hdr;
349 struct elf_link_hash_entry **sym_hashes;
350 bfd_vma *local_got_offsets;
351 const Elf_Internal_Rela *rel;
352 const Elf_Internal_Rela *rel_end;
353 asection *sgot;
354 asection *srelgot;
355 asection *sreloc;
357 if (info->relocateable)
358 return true;
360 dynobj = elf_hash_table (info)->dynobj;
361 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
362 sym_hashes = elf_sym_hashes (abfd);
363 local_got_offsets = elf_local_got_offsets (abfd);
365 sgot = NULL;
366 srelgot = NULL;
367 sreloc = NULL;
369 rel_end = relocs + sec->reloc_count;
370 for (rel = relocs; rel < rel_end; rel++)
372 unsigned long r_symndx;
373 struct elf_link_hash_entry *h;
375 r_symndx = ELF32_R_SYM (rel->r_info);
376 if (r_symndx < symtab_hdr->sh_info)
377 h = NULL;
378 else
379 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
381 switch (ELF32_R_TYPE (rel->r_info))
383 case R_SPARC_GOT10:
384 case R_SPARC_GOT13:
385 case R_SPARC_GOT22:
386 /* This symbol requires a global offset table entry. */
388 if (dynobj == NULL)
390 /* Create the .got section. */
391 elf_hash_table (info)->dynobj = dynobj = abfd;
392 if (! _bfd_elf_create_got_section (dynobj, info))
393 return false;
396 if (sgot == NULL)
398 sgot = bfd_get_section_by_name (dynobj, ".got");
399 BFD_ASSERT (sgot != NULL);
402 if (srelgot == NULL
403 && (h != NULL || info->shared))
405 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
406 if (srelgot == NULL)
408 srelgot = bfd_make_section (dynobj, ".rela.got");
409 if (srelgot == NULL
410 || ! bfd_set_section_flags (dynobj, srelgot,
411 (SEC_ALLOC
412 | SEC_LOAD
413 | SEC_HAS_CONTENTS
414 | SEC_IN_MEMORY
415 | SEC_LINKER_CREATED
416 | SEC_READONLY))
417 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
418 return false;
422 if (h != NULL)
424 if (h->got.offset != (bfd_vma) -1)
426 /* We have already allocated space in the .got. */
427 break;
429 h->got.offset = sgot->_raw_size;
431 /* Make sure this symbol is output as a dynamic symbol. */
432 if (h->dynindx == -1)
434 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
435 return false;
438 srelgot->_raw_size += sizeof (Elf32_External_Rela);
440 else
442 /* This is a global offset table entry for a local
443 symbol. */
444 if (local_got_offsets == NULL)
446 size_t size;
447 register unsigned int i;
449 size = symtab_hdr->sh_info * sizeof (bfd_vma);
450 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
451 if (local_got_offsets == NULL)
452 return false;
453 elf_local_got_offsets (abfd) = local_got_offsets;
454 for (i = 0; i < symtab_hdr->sh_info; i++)
455 local_got_offsets[i] = (bfd_vma) -1;
457 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
459 /* We have already allocated space in the .got. */
460 break;
462 local_got_offsets[r_symndx] = sgot->_raw_size;
464 if (info->shared)
466 /* If we are generating a shared object, we need to
467 output a R_SPARC_RELATIVE reloc so that the
468 dynamic linker can adjust this GOT entry. */
469 srelgot->_raw_size += sizeof (Elf32_External_Rela);
473 sgot->_raw_size += 4;
475 /* If the .got section is more than 0x1000 bytes, we add
476 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
477 bit relocations have a greater chance of working. */
478 if (sgot->_raw_size >= 0x1000
479 && elf_hash_table (info)->hgot->root.u.def.value == 0)
480 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
482 break;
484 case R_SPARC_WPLT30:
485 /* This symbol requires a procedure linkage table entry. We
486 actually build the entry in adjust_dynamic_symbol,
487 because this might be a case of linking PIC code without
488 linking in any dynamic objects, in which case we don't
489 need to generate a procedure linkage table after all. */
491 if (h == NULL)
493 /* The Solaris native assembler will generate a WPLT30
494 reloc for a local symbol if you assemble a call from
495 one section to another when using -K pic. We treat
496 it as WDISP30. */
497 break;
500 /* Make sure this symbol is output as a dynamic symbol. */
501 if (h->dynindx == -1)
503 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
504 return false;
507 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
509 break;
511 case R_SPARC_PC10:
512 case R_SPARC_PC22:
513 if (h != NULL
514 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
515 break;
516 /* Fall through. */
517 case R_SPARC_DISP8:
518 case R_SPARC_DISP16:
519 case R_SPARC_DISP32:
520 case R_SPARC_WDISP30:
521 case R_SPARC_WDISP22:
522 case R_SPARC_WDISP19:
523 case R_SPARC_WDISP16:
524 /* If we are linking with -Bsymbolic, we do not need to copy
525 a PC relative reloc against a global symbol which is
526 defined in an object we are including in the link (i.e.,
527 DEF_REGULAR is set). FIXME: At this point we have not
528 seen all the input files, so it is possible that
529 DEF_REGULAR is not set now but will be set later (it is
530 never cleared). This needs to be handled as in
531 elf32-i386.c. */
532 if (h == NULL
533 || (info->symbolic
534 && (h->elf_link_hash_flags
535 & ELF_LINK_HASH_DEF_REGULAR) != 0))
536 break;
537 /* Fall through. */
538 case R_SPARC_8:
539 case R_SPARC_16:
540 case R_SPARC_32:
541 case R_SPARC_HI22:
542 case R_SPARC_22:
543 case R_SPARC_13:
544 case R_SPARC_LO10:
545 case R_SPARC_UA32:
546 if (info->shared)
548 /* When creating a shared object, we must copy these
549 relocs into the output file. We create a reloc
550 section in dynobj and make room for the reloc. */
551 if (sreloc == NULL)
553 const char *name;
555 name = (bfd_elf_string_from_elf_section
556 (abfd,
557 elf_elfheader (abfd)->e_shstrndx,
558 elf_section_data (sec)->rel_hdr.sh_name));
559 if (name == NULL)
560 return false;
562 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
563 && strcmp (bfd_get_section_name (abfd, sec),
564 name + 5) == 0);
566 sreloc = bfd_get_section_by_name (dynobj, name);
567 if (sreloc == NULL)
569 flagword flags;
571 sreloc = bfd_make_section (dynobj, name);
572 flags = (SEC_HAS_CONTENTS | SEC_READONLY
573 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
574 if ((sec->flags & SEC_ALLOC) != 0)
575 flags |= SEC_ALLOC | SEC_LOAD;
576 if (sreloc == NULL
577 || ! bfd_set_section_flags (dynobj, sreloc, flags)
578 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
579 return false;
583 sreloc->_raw_size += sizeof (Elf32_External_Rela);
586 break;
588 case R_SPARC_GNU_VTINHERIT:
589 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
590 return false;
591 break;
593 case R_SPARC_GNU_VTENTRY:
594 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
595 return false;
596 break;
598 default:
599 break;
603 return true;
606 static asection *
607 elf32_sparc_gc_mark_hook (abfd, info, rel, h, sym)
608 bfd *abfd;
609 struct bfd_link_info *info ATTRIBUTE_UNUSED;
610 Elf_Internal_Rela *rel;
611 struct elf_link_hash_entry *h;
612 Elf_Internal_Sym *sym;
615 if (h != NULL)
617 switch (ELF32_R_TYPE (rel->r_info))
619 case R_SPARC_GNU_VTINHERIT:
620 case R_SPARC_GNU_VTENTRY:
621 break;
623 default:
624 switch (h->root.type)
626 case bfd_link_hash_defined:
627 case bfd_link_hash_defweak:
628 return h->root.u.def.section;
630 case bfd_link_hash_common:
631 return h->root.u.c.p->section;
633 default:
634 break;
638 else
640 if (!(elf_bad_symtab (abfd)
641 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
642 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
643 && sym->st_shndx != SHN_COMMON))
645 return bfd_section_from_elf_index (abfd, sym->st_shndx);
649 return NULL;
652 /* Update the got entry reference counts for the section being removed. */
653 static boolean
654 elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs)
655 bfd *abfd;
656 struct bfd_link_info *info ATTRIBUTE_UNUSED;
657 asection *sec;
658 const Elf_Internal_Rela *relocs;
661 Elf_Internal_Shdr *symtab_hdr;
662 struct elf_link_hash_entry **sym_hashes;
663 bfd_signed_vma *local_got_refcounts;
664 const Elf_Internal_Rela *rel, *relend;
665 unsigned long r_symndx;
666 struct elf_link_hash_entry *h;
668 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
669 sym_hashes = elf_sym_hashes (abfd);
670 local_got_refcounts = elf_local_got_refcounts (abfd);
672 relend = relocs + sec->reloc_count;
673 for (rel = relocs; rel < relend; rel++)
674 switch (ELF32_R_TYPE (rel->r_info))
676 case R_SPARC_GOT10:
677 case R_SPARC_GOT13:
678 case R_SPARC_GOT22:
679 r_symndx = ELF32_R_SYM (rel->r_info);
680 if (r_symndx >= symtab_hdr->sh_info)
682 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
683 if (h->got.refcount > 0)
684 h->got.refcount--;
686 else
688 if (local_got_refcounts[r_symndx] > 0)
689 local_got_refcounts[r_symndx]--;
691 break;
693 case R_SPARC_PLT32:
694 case R_SPARC_HIPLT22:
695 case R_SPARC_LOPLT10:
696 case R_SPARC_PCPLT32:
697 case R_SPARC_PCPLT10:
698 r_symndx = ELF32_R_SYM (rel->r_info);
699 if (r_symndx >= symtab_hdr->sh_info)
701 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
702 if (h->plt.refcount > 0)
703 h->plt.refcount--;
705 break;
707 default:
708 break;
711 return true;
714 /* Adjust a symbol defined by a dynamic object and referenced by a
715 regular object. The current definition is in some section of the
716 dynamic object, but we're not including those sections. We have to
717 change the definition to something the rest of the link can
718 understand. */
720 static boolean
721 elf32_sparc_adjust_dynamic_symbol (info, h)
722 struct bfd_link_info *info;
723 struct elf_link_hash_entry *h;
725 bfd *dynobj;
726 asection *s;
727 unsigned int power_of_two;
729 dynobj = elf_hash_table (info)->dynobj;
731 /* Make sure we know what is going on here. */
732 BFD_ASSERT (dynobj != NULL
733 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
734 || h->weakdef != NULL
735 || ((h->elf_link_hash_flags
736 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
737 && (h->elf_link_hash_flags
738 & ELF_LINK_HASH_REF_REGULAR) != 0
739 && (h->elf_link_hash_flags
740 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
742 /* If this is a function, put it in the procedure linkage table. We
743 will fill in the contents of the procedure linkage table later
744 (although we could actually do it here). The STT_NOTYPE
745 condition is a hack specifically for the Oracle libraries
746 delivered for Solaris; for some inexplicable reason, they define
747 some of their functions as STT_NOTYPE when they really should be
748 STT_FUNC. */
749 if (h->type == STT_FUNC
750 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
751 || (h->type == STT_NOTYPE
752 && (h->root.type == bfd_link_hash_defined
753 || h->root.type == bfd_link_hash_defweak)
754 && (h->root.u.def.section->flags & SEC_CODE) != 0))
756 if (! elf_hash_table (info)->dynamic_sections_created
757 || ((!info->shared || info->symbolic || h->dynindx == -1)
758 && (h->elf_link_hash_flags
759 & ELF_LINK_HASH_DEF_REGULAR) != 0))
761 /* This case can occur if we saw a WPLT30 reloc in an input
762 file, but none of the input files were dynamic objects.
763 Or, when linking the main application or a -Bsymbolic
764 shared library against PIC code. Or when a global symbol
765 has been made private, e.g. via versioning.
767 In these cases we know what value the symbol will resolve
768 to, so we don't actually need to build a procedure linkage
769 table, and we can just do a WDISP30 reloc instead. */
771 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
772 return true;
775 s = bfd_get_section_by_name (dynobj, ".plt");
776 BFD_ASSERT (s != NULL);
778 /* The first four entries in .plt are reserved. */
779 if (s->_raw_size == 0)
780 s->_raw_size = 4 * PLT_ENTRY_SIZE;
782 /* The procedure linkage table has a maximum size. */
783 if (s->_raw_size >= 0x400000)
785 bfd_set_error (bfd_error_bad_value);
786 return false;
789 /* If this symbol is not defined in a regular file, and we are
790 not generating a shared library, then set the symbol to this
791 location in the .plt. This is required to make function
792 pointers compare as equal between the normal executable and
793 the shared library. */
794 if (! info->shared
795 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
797 h->root.u.def.section = s;
798 h->root.u.def.value = s->_raw_size;
801 h->plt.offset = s->_raw_size;
803 /* Make room for this entry. */
804 s->_raw_size += PLT_ENTRY_SIZE;
806 /* We also need to make an entry in the .rela.plt section. */
808 s = bfd_get_section_by_name (dynobj, ".rela.plt");
809 BFD_ASSERT (s != NULL);
810 s->_raw_size += sizeof (Elf32_External_Rela);
812 return true;
815 /* If this is a weak symbol, and there is a real definition, the
816 processor independent code will have arranged for us to see the
817 real definition first, and we can just use the same value. */
818 if (h->weakdef != NULL)
820 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
821 || h->weakdef->root.type == bfd_link_hash_defweak);
822 h->root.u.def.section = h->weakdef->root.u.def.section;
823 h->root.u.def.value = h->weakdef->root.u.def.value;
824 return true;
827 /* This is a reference to a symbol defined by a dynamic object which
828 is not a function. */
830 /* If we are creating a shared library, we must presume that the
831 only references to the symbol are via the global offset table.
832 For such cases we need not do anything here; the relocations will
833 be handled correctly by relocate_section. */
834 if (info->shared)
835 return true;
837 /* We must allocate the symbol in our .dynbss section, which will
838 become part of the .bss section of the executable. There will be
839 an entry for this symbol in the .dynsym section. The dynamic
840 object will contain position independent code, so all references
841 from the dynamic object to this symbol will go through the global
842 offset table. The dynamic linker will use the .dynsym entry to
843 determine the address it must put in the global offset table, so
844 both the dynamic object and the regular object will refer to the
845 same memory location for the variable. */
847 s = bfd_get_section_by_name (dynobj, ".dynbss");
848 BFD_ASSERT (s != NULL);
850 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
851 to copy the initial value out of the dynamic object and into the
852 runtime process image. We need to remember the offset into the
853 .rel.bss section we are going to use. */
854 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
856 asection *srel;
858 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
859 BFD_ASSERT (srel != NULL);
860 srel->_raw_size += sizeof (Elf32_External_Rela);
861 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
864 /* We need to figure out the alignment required for this symbol. I
865 have no idea how ELF linkers handle this. */
866 power_of_two = bfd_log2 (h->size);
867 if (power_of_two > 3)
868 power_of_two = 3;
870 /* Apply the required alignment. */
871 s->_raw_size = BFD_ALIGN (s->_raw_size,
872 (bfd_size_type) (1 << power_of_two));
873 if (power_of_two > bfd_get_section_alignment (dynobj, s))
875 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
876 return false;
879 /* Define the symbol as being at this point in the section. */
880 h->root.u.def.section = s;
881 h->root.u.def.value = s->_raw_size;
883 /* Increment the section size to make room for the symbol. */
884 s->_raw_size += h->size;
886 return true;
889 /* Set the sizes of the dynamic sections. */
891 static boolean
892 elf32_sparc_size_dynamic_sections (output_bfd, info)
893 bfd *output_bfd;
894 struct bfd_link_info *info;
896 bfd *dynobj;
897 asection *s;
898 boolean reltext;
899 boolean relplt;
901 dynobj = elf_hash_table (info)->dynobj;
902 BFD_ASSERT (dynobj != NULL);
904 if (elf_hash_table (info)->dynamic_sections_created)
906 /* Set the contents of the .interp section to the interpreter. */
907 if (! info->shared)
909 s = bfd_get_section_by_name (dynobj, ".interp");
910 BFD_ASSERT (s != NULL);
911 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
912 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
915 /* Make space for the trailing nop in .plt. */
916 s = bfd_get_section_by_name (dynobj, ".plt");
917 BFD_ASSERT (s != NULL);
918 if (s->_raw_size > 0)
919 s->_raw_size += 4;
921 else
923 /* We may have created entries in the .rela.got section.
924 However, if we are not creating the dynamic sections, we will
925 not actually use these entries. Reset the size of .rela.got,
926 which will cause it to get stripped from the output file
927 below. */
928 s = bfd_get_section_by_name (dynobj, ".rela.got");
929 if (s != NULL)
930 s->_raw_size = 0;
933 /* The check_relocs and adjust_dynamic_symbol entry points have
934 determined the sizes of the various dynamic sections. Allocate
935 memory for them. */
936 reltext = false;
937 relplt = false;
938 for (s = dynobj->sections; s != NULL; s = s->next)
940 const char *name;
941 boolean strip;
943 if ((s->flags & SEC_LINKER_CREATED) == 0)
944 continue;
946 /* It's OK to base decisions on the section name, because none
947 of the dynobj section names depend upon the input files. */
948 name = bfd_get_section_name (dynobj, s);
950 strip = false;
952 if (strncmp (name, ".rela", 5) == 0)
954 if (s->_raw_size == 0)
956 /* If we don't need this section, strip it from the
957 output file. This is to handle .rela.bss and
958 .rel.plt. We must create it in
959 create_dynamic_sections, because it must be created
960 before the linker maps input sections to output
961 sections. The linker does that before
962 adjust_dynamic_symbol is called, and it is that
963 function which decides whether anything needs to go
964 into these sections. */
965 strip = true;
967 else
969 const char *outname;
970 asection *target;
972 /* If this relocation section applies to a read only
973 section, then we probably need a DT_TEXTREL entry. */
974 outname = bfd_get_section_name (output_bfd,
975 s->output_section);
976 target = bfd_get_section_by_name (output_bfd, outname + 5);
977 if (target != NULL
978 && (target->flags & SEC_READONLY) != 0
979 && (target->flags & SEC_ALLOC) != 0)
980 reltext = true;
982 if (strcmp (name, ".rela.plt") == 0)
983 relplt = true;
985 /* We use the reloc_count field as a counter if we need
986 to copy relocs into the output file. */
987 s->reloc_count = 0;
990 else if (strcmp (name, ".plt") != 0
991 && strcmp (name, ".got") != 0)
993 /* It's not one of our sections, so don't allocate space. */
994 continue;
997 if (strip)
999 _bfd_strip_section_from_output (s);
1000 continue;
1003 /* Allocate memory for the section contents. */
1004 s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
1005 if (s->contents == NULL && s->_raw_size != 0)
1006 return false;
1009 if (elf_hash_table (info)->dynamic_sections_created)
1011 /* Add some entries to the .dynamic section. We fill in the
1012 values later, in elf32_sparc_finish_dynamic_sections, but we
1013 must add the entries now so that we get the correct size for
1014 the .dynamic section. The DT_DEBUG entry is filled in by the
1015 dynamic linker and used by the debugger. */
1016 if (! info->shared)
1018 if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
1019 return false;
1022 if (relplt)
1024 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
1025 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
1026 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
1027 || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
1028 return false;
1031 if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
1032 || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
1033 || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
1034 sizeof (Elf32_External_Rela)))
1035 return false;
1037 if (reltext)
1039 if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
1040 return false;
1044 return true;
1047 /* Relocate a SPARC ELF section. */
1049 static boolean
1050 elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
1051 contents, relocs, local_syms, local_sections)
1052 bfd *output_bfd;
1053 struct bfd_link_info *info;
1054 bfd *input_bfd;
1055 asection *input_section;
1056 bfd_byte *contents;
1057 Elf_Internal_Rela *relocs;
1058 Elf_Internal_Sym *local_syms;
1059 asection **local_sections;
1061 bfd *dynobj;
1062 Elf_Internal_Shdr *symtab_hdr;
1063 struct elf_link_hash_entry **sym_hashes;
1064 bfd_vma *local_got_offsets;
1065 bfd_vma got_base;
1066 asection *sgot;
1067 asection *splt;
1068 asection *sreloc;
1069 Elf_Internal_Rela *rel;
1070 Elf_Internal_Rela *relend;
1072 dynobj = elf_hash_table (info)->dynobj;
1073 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1074 sym_hashes = elf_sym_hashes (input_bfd);
1075 local_got_offsets = elf_local_got_offsets (input_bfd);
1077 if (elf_hash_table (info)->hgot == NULL)
1078 got_base = 0;
1079 else
1080 got_base = elf_hash_table (info)->hgot->root.u.def.value;
1082 sgot = NULL;
1083 splt = NULL;
1084 sreloc = NULL;
1086 rel = relocs;
1087 relend = relocs + input_section->reloc_count;
1088 for (; rel < relend; rel++)
1090 int r_type;
1091 reloc_howto_type *howto;
1092 unsigned long r_symndx;
1093 struct elf_link_hash_entry *h;
1094 Elf_Internal_Sym *sym;
1095 asection *sec;
1096 bfd_vma relocation;
1097 bfd_reloc_status_type r;
1099 r_type = ELF32_R_TYPE (rel->r_info);
1101 if (r_type == R_SPARC_GNU_VTINHERIT
1102 || r_type == R_SPARC_GNU_VTENTRY)
1103 continue;
1105 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
1107 bfd_set_error (bfd_error_bad_value);
1108 return false;
1110 howto = _bfd_sparc_elf_howto_table + r_type;
1112 r_symndx = ELF32_R_SYM (rel->r_info);
1114 if (info->relocateable)
1116 /* This is a relocateable link. We don't have to change
1117 anything, unless the reloc is against a section symbol,
1118 in which case we have to adjust according to where the
1119 section symbol winds up in the output section. */
1120 if (r_symndx < symtab_hdr->sh_info)
1122 sym = local_syms + r_symndx;
1123 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1125 sec = local_sections[r_symndx];
1126 rel->r_addend += sec->output_offset + sym->st_value;
1130 continue;
1133 /* This is a final link. */
1134 h = NULL;
1135 sym = NULL;
1136 sec = NULL;
1137 if (r_symndx < symtab_hdr->sh_info)
1139 sym = local_syms + r_symndx;
1140 sec = local_sections[r_symndx];
1141 relocation = (sec->output_section->vma
1142 + sec->output_offset
1143 + sym->st_value);
1145 else
1147 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1148 while (h->root.type == bfd_link_hash_indirect
1149 || h->root.type == bfd_link_hash_warning)
1150 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1151 if (h->root.type == bfd_link_hash_defined
1152 || h->root.type == bfd_link_hash_defweak)
1154 sec = h->root.u.def.section;
1155 if ((r_type == R_SPARC_WPLT30
1156 && h->plt.offset != (bfd_vma) -1)
1157 || ((r_type == R_SPARC_GOT10
1158 || r_type == R_SPARC_GOT13
1159 || r_type == R_SPARC_GOT22)
1160 && elf_hash_table (info)->dynamic_sections_created
1161 && (! info->shared
1162 || (! info->symbolic && h->dynindx != -1)
1163 || (h->elf_link_hash_flags
1164 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1165 || (info->shared
1166 && ((! info->symbolic && h->dynindx != -1)
1167 || (h->elf_link_hash_flags
1168 & ELF_LINK_HASH_DEF_REGULAR) == 0)
1169 && (r_type == R_SPARC_8
1170 || r_type == R_SPARC_16
1171 || r_type == R_SPARC_32
1172 || r_type == R_SPARC_DISP8
1173 || r_type == R_SPARC_DISP16
1174 || r_type == R_SPARC_DISP32
1175 || r_type == R_SPARC_WDISP30
1176 || r_type == R_SPARC_WDISP22
1177 || r_type == R_SPARC_WDISP19
1178 || r_type == R_SPARC_WDISP16
1179 || r_type == R_SPARC_HI22
1180 || r_type == R_SPARC_22
1181 || r_type == R_SPARC_13
1182 || r_type == R_SPARC_LO10
1183 || r_type == R_SPARC_UA32
1184 || ((r_type == R_SPARC_PC10
1185 || r_type == R_SPARC_PC22)
1186 && strcmp (h->root.root.string,
1187 "_GLOBAL_OFFSET_TABLE_") != 0))))
1189 /* In these cases, we don't need the relocation
1190 value. We check specially because in some
1191 obscure cases sec->output_section will be NULL. */
1192 relocation = 0;
1194 else
1195 relocation = (h->root.u.def.value
1196 + sec->output_section->vma
1197 + sec->output_offset);
1199 else if (h->root.type == bfd_link_hash_undefweak)
1200 relocation = 0;
1201 else if (info->shared && !info->symbolic && !info->no_undefined)
1202 relocation = 0;
1203 else
1205 if (! ((*info->callbacks->undefined_symbol)
1206 (info, h->root.root.string, input_bfd,
1207 input_section, rel->r_offset)))
1208 return false;
1209 relocation = 0;
1213 switch (r_type)
1215 case R_SPARC_GOT10:
1216 case R_SPARC_GOT13:
1217 case R_SPARC_GOT22:
1218 /* Relocation is to the entry for this symbol in the global
1219 offset table. */
1220 if (sgot == NULL)
1222 sgot = bfd_get_section_by_name (dynobj, ".got");
1223 BFD_ASSERT (sgot != NULL);
1226 if (h != NULL)
1228 bfd_vma off;
1230 off = h->got.offset;
1231 BFD_ASSERT (off != (bfd_vma) -1);
1233 if (! elf_hash_table (info)->dynamic_sections_created
1234 || (info->shared
1235 && (info->symbolic || h->dynindx == -1)
1236 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
1238 /* This is actually a static link, or it is a
1239 -Bsymbolic link and the symbol is defined
1240 locally, or the symbol was forced to be local
1241 because of a version file. We must initialize
1242 this entry in the global offset table. Since the
1243 offset must always be a multiple of 4, we use the
1244 least significant bit to record whether we have
1245 initialized it already.
1247 When doing a dynamic link, we create a .rela.got
1248 relocation entry to initialize the value. This
1249 is done in the finish_dynamic_symbol routine. */
1250 if ((off & 1) != 0)
1251 off &= ~1;
1252 else
1254 bfd_put_32 (output_bfd, relocation,
1255 sgot->contents + off);
1256 h->got.offset |= 1;
1260 relocation = sgot->output_offset + off - got_base;
1262 else
1264 bfd_vma off;
1266 BFD_ASSERT (local_got_offsets != NULL
1267 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1269 off = local_got_offsets[r_symndx];
1271 /* The offset must always be a multiple of 4. We use
1272 the least significant bit to record whether we have
1273 already processed this entry. */
1274 if ((off & 1) != 0)
1275 off &= ~1;
1276 else
1278 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1280 if (info->shared)
1282 asection *srelgot;
1283 Elf_Internal_Rela outrel;
1285 /* We need to generate a R_SPARC_RELATIVE reloc
1286 for the dynamic linker. */
1287 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1288 BFD_ASSERT (srelgot != NULL);
1290 outrel.r_offset = (sgot->output_section->vma
1291 + sgot->output_offset
1292 + off);
1293 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
1294 outrel.r_addend = 0;
1295 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1296 (((Elf32_External_Rela *)
1297 srelgot->contents)
1298 + srelgot->reloc_count));
1299 ++srelgot->reloc_count;
1302 local_got_offsets[r_symndx] |= 1;
1305 relocation = sgot->output_offset + off - got_base;
1308 break;
1310 case R_SPARC_WPLT30:
1311 /* Relocation is to the entry for this symbol in the
1312 procedure linkage table. */
1314 /* The Solaris native assembler will generate a WPLT30 reloc
1315 for a local symbol if you assemble a call from one
1316 section to another when using -K pic. We treat it as
1317 WDISP30. */
1318 if (h == NULL)
1319 break;
1321 if (h->plt.offset == (bfd_vma) -1)
1323 /* We didn't make a PLT entry for this symbol. This
1324 happens when statically linking PIC code, or when
1325 using -Bsymbolic. */
1326 break;
1329 if (splt == NULL)
1331 splt = bfd_get_section_by_name (dynobj, ".plt");
1332 BFD_ASSERT (splt != NULL);
1335 relocation = (splt->output_section->vma
1336 + splt->output_offset
1337 + h->plt.offset);
1338 break;
1340 case R_SPARC_PC10:
1341 case R_SPARC_PC22:
1342 if (h != NULL
1343 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1344 break;
1345 /* Fall through. */
1346 case R_SPARC_DISP8:
1347 case R_SPARC_DISP16:
1348 case R_SPARC_DISP32:
1349 case R_SPARC_WDISP30:
1350 case R_SPARC_WDISP22:
1351 case R_SPARC_WDISP19:
1352 case R_SPARC_WDISP16:
1353 if (h == NULL
1354 || (info->symbolic
1355 && (h->elf_link_hash_flags
1356 & ELF_LINK_HASH_DEF_REGULAR) != 0))
1357 break;
1358 /* Fall through. */
1359 case R_SPARC_8:
1360 case R_SPARC_16:
1361 case R_SPARC_32:
1362 case R_SPARC_HI22:
1363 case R_SPARC_22:
1364 case R_SPARC_13:
1365 case R_SPARC_LO10:
1366 case R_SPARC_UA32:
1367 if (info->shared)
1369 Elf_Internal_Rela outrel;
1370 boolean skip;
1372 /* When generating a shared object, these relocations
1373 are copied into the output file to be resolved at run
1374 time. */
1376 if (sreloc == NULL)
1378 const char *name;
1380 name = (bfd_elf_string_from_elf_section
1381 (input_bfd,
1382 elf_elfheader (input_bfd)->e_shstrndx,
1383 elf_section_data (input_section)->rel_hdr.sh_name));
1384 if (name == NULL)
1385 return false;
1387 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1388 && strcmp (bfd_get_section_name (input_bfd,
1389 input_section),
1390 name + 5) == 0);
1392 sreloc = bfd_get_section_by_name (dynobj, name);
1393 BFD_ASSERT (sreloc != NULL);
1396 skip = false;
1398 if (elf_section_data (input_section)->stab_info == NULL)
1399 outrel.r_offset = rel->r_offset;
1400 else
1402 bfd_vma off;
1404 off = (_bfd_stab_section_offset
1405 (output_bfd, &elf_hash_table (info)->stab_info,
1406 input_section,
1407 &elf_section_data (input_section)->stab_info,
1408 rel->r_offset));
1409 if (off == (bfd_vma) -1)
1410 skip = true;
1411 outrel.r_offset = off;
1414 outrel.r_offset += (input_section->output_section->vma
1415 + input_section->output_offset);
1417 if (skip)
1418 memset (&outrel, 0, sizeof outrel);
1419 /* h->dynindx may be -1 if the symbol was marked to
1420 become local. */
1421 else if (h != NULL
1422 && ((! info->symbolic && h->dynindx != -1)
1423 || (h->elf_link_hash_flags
1424 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1426 BFD_ASSERT (h->dynindx != -1);
1427 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1428 outrel.r_addend = rel->r_addend;
1430 else
1432 if (r_type == R_SPARC_32)
1434 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
1435 outrel.r_addend = relocation + rel->r_addend;
1437 else
1439 long indx;
1441 if (h == NULL)
1442 sec = local_sections[r_symndx];
1443 else
1445 BFD_ASSERT (h->root.type == bfd_link_hash_defined
1446 || (h->root.type
1447 == bfd_link_hash_defweak));
1448 sec = h->root.u.def.section;
1450 if (sec != NULL && bfd_is_abs_section (sec))
1451 indx = 0;
1452 else if (sec == NULL || sec->owner == NULL)
1454 bfd_set_error (bfd_error_bad_value);
1455 return false;
1457 else
1459 asection *osec;
1461 osec = sec->output_section;
1462 indx = elf_section_data (osec)->dynindx;
1464 /* FIXME: we really should be able to link non-pic
1465 shared libraries. */
1466 if (indx == 0)
1468 BFD_FAIL ();
1469 (*_bfd_error_handler)
1470 (_("%s: probably compiled without -fPIC?"),
1471 bfd_get_filename (input_bfd));
1472 bfd_set_error (bfd_error_bad_value);
1473 return false;
1477 outrel.r_info = ELF32_R_INFO (indx, r_type);
1479 /* For non-RELATIVE dynamic relocations, we keep the
1480 same symbol, and so generally the same addend. But
1481 we do need to adjust those relocations referencing
1482 sections. */
1483 outrel.r_addend = rel->r_addend;
1484 if (r_symndx < symtab_hdr->sh_info
1485 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1486 outrel.r_addend += sec->output_offset+sym->st_value;
1490 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1491 (((Elf32_External_Rela *)
1492 sreloc->contents)
1493 + sreloc->reloc_count));
1494 ++sreloc->reloc_count;
1496 /* This reloc will be computed at runtime, so there's no
1497 need to do anything now, unless this is a RELATIVE
1498 reloc in an unallocated section. */
1499 if (skip
1500 || (input_section->flags & SEC_ALLOC) != 0
1501 || ELF32_R_TYPE (outrel.r_info) != R_SPARC_RELATIVE)
1502 continue;
1504 break;
1506 default:
1507 break;
1510 if (r_type == R_SPARC_WDISP16)
1512 bfd_vma x;
1514 relocation += rel->r_addend;
1515 relocation -= (input_section->output_section->vma
1516 + input_section->output_offset);
1517 relocation -= rel->r_offset;
1519 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
1520 x |= ((((relocation >> 2) & 0xc000) << 6)
1521 | ((relocation >> 2) & 0x3fff));
1522 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
1524 if ((bfd_signed_vma) relocation < - 0x40000
1525 || (bfd_signed_vma) relocation > 0x3ffff)
1526 r = bfd_reloc_overflow;
1527 else
1528 r = bfd_reloc_ok;
1530 else if (r_type == R_SPARC_REV32)
1532 bfd_vma x;
1534 relocation = relocation + rel->r_addend;
1536 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
1537 x = x + relocation;
1538 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
1539 r = bfd_reloc_ok;
1541 else
1542 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1543 contents, rel->r_offset,
1544 relocation, rel->r_addend);
1547 if (r != bfd_reloc_ok)
1549 switch (r)
1551 default:
1552 case bfd_reloc_outofrange:
1553 abort ();
1554 case bfd_reloc_overflow:
1556 const char *name;
1558 if (h != NULL)
1559 name = h->root.root.string;
1560 else
1562 name = bfd_elf_string_from_elf_section (input_bfd,
1563 symtab_hdr->sh_link,
1564 sym->st_name);
1565 if (name == NULL)
1566 return false;
1567 if (*name == '\0')
1568 name = bfd_section_name (input_bfd, sec);
1570 if (! ((*info->callbacks->reloc_overflow)
1571 (info, name, howto->name, (bfd_vma) 0,
1572 input_bfd, input_section, rel->r_offset)))
1573 return false;
1575 break;
1580 return true;
1583 /* Finish up dynamic symbol handling. We set the contents of various
1584 dynamic sections here. */
1586 static boolean
1587 elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym)
1588 bfd *output_bfd;
1589 struct bfd_link_info *info;
1590 struct elf_link_hash_entry *h;
1591 Elf_Internal_Sym *sym;
1593 bfd *dynobj;
1595 dynobj = elf_hash_table (info)->dynobj;
1597 if (h->plt.offset != (bfd_vma) -1)
1599 asection *splt;
1600 asection *srela;
1601 Elf_Internal_Rela rela;
1603 /* This symbol has an entry in the procedure linkage table. Set
1604 it up. */
1606 BFD_ASSERT (h->dynindx != -1);
1608 splt = bfd_get_section_by_name (dynobj, ".plt");
1609 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
1610 BFD_ASSERT (splt != NULL && srela != NULL);
1612 /* Fill in the entry in the procedure linkage table. */
1613 bfd_put_32 (output_bfd,
1614 PLT_ENTRY_WORD0 + h->plt.offset,
1615 splt->contents + h->plt.offset);
1616 bfd_put_32 (output_bfd,
1617 (PLT_ENTRY_WORD1
1618 + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)),
1619 splt->contents + h->plt.offset + 4);
1620 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
1621 splt->contents + h->plt.offset + 8);
1623 /* Fill in the entry in the .rela.plt section. */
1624 rela.r_offset = (splt->output_section->vma
1625 + splt->output_offset
1626 + h->plt.offset);
1627 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
1628 rela.r_addend = 0;
1629 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1630 ((Elf32_External_Rela *) srela->contents
1631 + h->plt.offset / PLT_ENTRY_SIZE - 4));
1633 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1635 /* Mark the symbol as undefined, rather than as defined in
1636 the .plt section. Leave the value alone. */
1637 sym->st_shndx = SHN_UNDEF;
1641 if (h->got.offset != (bfd_vma) -1)
1643 asection *sgot;
1644 asection *srela;
1645 Elf_Internal_Rela rela;
1647 /* This symbol has an entry in the global offset table. Set it
1648 up. */
1650 sgot = bfd_get_section_by_name (dynobj, ".got");
1651 srela = bfd_get_section_by_name (dynobj, ".rela.got");
1652 BFD_ASSERT (sgot != NULL && srela != NULL);
1654 rela.r_offset = (sgot->output_section->vma
1655 + sgot->output_offset
1656 + (h->got.offset &~ 1));
1658 /* If this is a -Bsymbolic link, and the symbol is defined
1659 locally, we just want to emit a RELATIVE reloc. Likewise if
1660 the symbol was forced to be local because of a version file.
1661 The entry in the global offset table will already have been
1662 initialized in the relocate_section function. */
1663 if (info->shared
1664 && (info->symbolic || h->dynindx == -1)
1665 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
1666 rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
1667 else
1669 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
1670 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
1673 rela.r_addend = 0;
1674 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1675 ((Elf32_External_Rela *) srela->contents
1676 + srela->reloc_count));
1677 ++srela->reloc_count;
1680 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
1682 asection *s;
1683 Elf_Internal_Rela rela;
1685 /* This symbols needs a copy reloc. Set it up. */
1687 BFD_ASSERT (h->dynindx != -1);
1689 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1690 ".rela.bss");
1691 BFD_ASSERT (s != NULL);
1693 rela.r_offset = (h->root.u.def.value
1694 + h->root.u.def.section->output_section->vma
1695 + h->root.u.def.section->output_offset);
1696 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY);
1697 rela.r_addend = 0;
1698 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1699 ((Elf32_External_Rela *) s->contents
1700 + s->reloc_count));
1701 ++s->reloc_count;
1704 /* Mark some specially defined symbols as absolute. */
1705 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1706 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
1707 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
1708 sym->st_shndx = SHN_ABS;
1710 return true;
1713 /* Finish up the dynamic sections. */
1715 static boolean
1716 elf32_sparc_finish_dynamic_sections (output_bfd, info)
1717 bfd *output_bfd;
1718 struct bfd_link_info *info;
1720 bfd *dynobj;
1721 asection *sdyn;
1722 asection *sgot;
1724 dynobj = elf_hash_table (info)->dynobj;
1726 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1728 if (elf_hash_table (info)->dynamic_sections_created)
1730 asection *splt;
1731 Elf32_External_Dyn *dyncon, *dynconend;
1733 splt = bfd_get_section_by_name (dynobj, ".plt");
1734 BFD_ASSERT (splt != NULL && sdyn != NULL);
1736 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1737 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
1738 for (; dyncon < dynconend; dyncon++)
1740 Elf_Internal_Dyn dyn;
1741 const char *name;
1742 boolean size;
1744 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1746 switch (dyn.d_tag)
1748 case DT_PLTGOT: name = ".plt"; size = false; break;
1749 case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
1750 case DT_JMPREL: name = ".rela.plt"; size = false; break;
1751 default: name = NULL; size = false; break;
1754 if (name != NULL)
1756 asection *s;
1758 s = bfd_get_section_by_name (output_bfd, name);
1759 if (s == NULL)
1760 dyn.d_un.d_val = 0;
1761 else
1763 if (! size)
1764 dyn.d_un.d_ptr = s->vma;
1765 else
1767 if (s->_cooked_size != 0)
1768 dyn.d_un.d_val = s->_cooked_size;
1769 else
1770 dyn.d_un.d_val = s->_raw_size;
1773 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1777 /* Clear the first four entries in the procedure linkage table,
1778 and put a nop in the last four bytes. */
1779 if (splt->_raw_size > 0)
1781 memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
1782 bfd_put_32 (output_bfd, SPARC_NOP,
1783 splt->contents + splt->_raw_size - 4);
1786 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
1787 PLT_ENTRY_SIZE;
1790 /* Set the first entry in the global offset table to the address of
1791 the dynamic section. */
1792 sgot = bfd_get_section_by_name (dynobj, ".got");
1793 BFD_ASSERT (sgot != NULL);
1794 if (sgot->_raw_size > 0)
1796 if (sdyn == NULL)
1797 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1798 else
1799 bfd_put_32 (output_bfd,
1800 sdyn->output_section->vma + sdyn->output_offset,
1801 sgot->contents);
1804 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1806 return true;
1809 /* Functions for dealing with the e_flags field.
1811 We don't define set_private_flags or copy_private_bfd_data because
1812 the only currently defined values are based on the bfd mach number,
1813 so we use the latter instead and defer setting e_flags until the
1814 file is written out. */
1816 /* Merge backend specific data from an object file to the output
1817 object file when linking. */
1819 static boolean
1820 elf32_sparc_merge_private_bfd_data (ibfd, obfd)
1821 bfd *ibfd;
1822 bfd *obfd;
1824 boolean error;
1825 /* FIXME: This should not be static. */
1826 static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
1828 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1829 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1830 return true;
1832 error = false;
1834 #if 0
1835 /* ??? The native linker doesn't do this so we can't (otherwise gcc would
1836 have to know which linker is being used). Instead, the native linker
1837 bumps up the architecture level when it has to. However, I still think
1838 warnings like these are good, so it would be nice to have them turned on
1839 by some option. */
1841 /* If the output machine is normal sparc, we can't allow v9 input files. */
1842 if (bfd_get_mach (obfd) == bfd_mach_sparc
1843 && (bfd_get_mach (ibfd) == bfd_mach_sparc_v8plus
1844 || bfd_get_mach (ibfd) == bfd_mach_sparc_v8plusa))
1846 error = true;
1847 (*_bfd_error_handler)
1848 (_("%s: compiled for a v8plus system and target is v8"),
1849 bfd_get_filename (ibfd));
1851 /* If the output machine is v9, we can't allow v9+vis input files. */
1852 if (bfd_get_mach (obfd) == bfd_mach_sparc_v8plus
1853 && bfd_get_mach (ibfd) == bfd_mach_sparc_v8plusa)
1855 error = true;
1856 (*_bfd_error_handler)
1857 (_("%s: compiled for a v8plusa system and target is v8plus"),
1858 bfd_get_filename (ibfd));
1860 #else
1861 if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9)
1863 error = true;
1864 (*_bfd_error_handler)
1865 (_("%s: compiled for a 64 bit system and target is 32 bit"),
1866 bfd_get_filename (ibfd));
1868 else if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
1869 bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
1870 #endif
1872 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
1873 != previous_ibfd_e_flags)
1874 && previous_ibfd_e_flags != (unsigned long) -1)
1876 (*_bfd_error_handler)
1877 (_("%s: linking little endian files with big endian files"),
1878 bfd_get_filename (ibfd));
1879 error = true;
1881 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
1883 if (error)
1885 bfd_set_error (bfd_error_bad_value);
1886 return false;
1889 return true;
1892 /* Set the right machine number. */
1894 static boolean
1895 elf32_sparc_object_p (abfd)
1896 bfd *abfd;
1898 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
1900 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
1901 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
1902 bfd_mach_sparc_v8plusa);
1903 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
1904 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
1905 bfd_mach_sparc_v8plus);
1906 else
1907 return false;
1909 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
1910 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
1911 bfd_mach_sparc_sparclite_le);
1912 else
1913 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
1916 /* The final processing done just before writing out the object file.
1917 We need to set the e_machine field appropriately. */
1919 static void
1920 elf32_sparc_final_write_processing (abfd, linker)
1921 bfd *abfd;
1922 boolean linker ATTRIBUTE_UNUSED;
1924 switch (bfd_get_mach (abfd))
1926 case bfd_mach_sparc :
1927 break; /* nothing to do */
1928 case bfd_mach_sparc_v8plus :
1929 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
1930 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
1931 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
1932 break;
1933 case bfd_mach_sparc_v8plusa :
1934 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
1935 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
1936 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
1937 break;
1938 case bfd_mach_sparc_sparclite_le :
1939 elf_elfheader (abfd)->e_machine = EM_SPARC;
1940 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
1941 break;
1942 default :
1943 abort ();
1944 break;
1948 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
1949 #define TARGET_BIG_NAME "elf32-sparc"
1950 #define ELF_ARCH bfd_arch_sparc
1951 #define ELF_MACHINE_CODE EM_SPARC
1952 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
1953 #define ELF_MAXPAGESIZE 0x10000
1955 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
1956 #define elf_info_to_howto elf32_sparc_info_to_howto
1957 #define elf_backend_create_dynamic_sections \
1958 _bfd_elf_create_dynamic_sections
1959 #define elf_backend_check_relocs elf32_sparc_check_relocs
1960 #define elf_backend_adjust_dynamic_symbol \
1961 elf32_sparc_adjust_dynamic_symbol
1962 #define elf_backend_size_dynamic_sections \
1963 elf32_sparc_size_dynamic_sections
1964 #define elf_backend_relocate_section elf32_sparc_relocate_section
1965 #define elf_backend_finish_dynamic_symbol \
1966 elf32_sparc_finish_dynamic_symbol
1967 #define elf_backend_finish_dynamic_sections \
1968 elf32_sparc_finish_dynamic_sections
1969 #define bfd_elf32_bfd_merge_private_bfd_data \
1970 elf32_sparc_merge_private_bfd_data
1971 #define elf_backend_object_p elf32_sparc_object_p
1972 #define elf_backend_final_write_processing \
1973 elf32_sparc_final_write_processing
1974 #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
1975 #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
1977 #define elf_backend_can_gc_sections 1
1978 #define elf_backend_want_got_plt 0
1979 #define elf_backend_plt_readonly 0
1980 #define elf_backend_want_plt_sym 1
1981 #define elf_backend_got_header_size 4
1982 #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE)
1984 #include "elf32-target.h"