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 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_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_JMP",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 elf32_sparc_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
,
399 || ! bfd_set_section_alignment (dynobj
, srelgot
, 2))
406 if (h
->got_offset
!= (bfd_vma
) -1)
408 /* We have already allocated space in the .got. */
411 h
->got_offset
= sgot
->_raw_size
;
413 /* Make sure this symbol is output as a dynamic symbol. */
414 if (h
->dynindx
== -1)
416 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
420 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
424 /* This is a global offset table entry for a local
426 if (local_got_offsets
== NULL
)
429 register unsigned int i
;
431 size
= symtab_hdr
->sh_info
* sizeof (bfd_vma
);
432 local_got_offsets
= (bfd_vma
*) bfd_alloc (abfd
, size
);
433 if (local_got_offsets
== NULL
)
435 elf_local_got_offsets (abfd
) = local_got_offsets
;
436 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
437 local_got_offsets
[i
] = (bfd_vma
) -1;
439 if (local_got_offsets
[r_symndx
] != (bfd_vma
) -1)
441 /* We have already allocated space in the .got. */
444 local_got_offsets
[r_symndx
] = sgot
->_raw_size
;
448 /* If we are generating a shared object, we need to
449 output a R_SPARC_RELATIVE reloc so that the
450 dynamic linker can adjust this GOT entry. */
451 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
455 sgot
->_raw_size
+= 4;
457 /* If the .got section is more than 0x1000 bytes, we add
458 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
459 bit relocations have a greater chance of working. */
460 if (sgot
->_raw_size
>= 0x1000
461 && elf_hash_table (info
)->hgot
->root
.u
.def
.value
== 0)
462 elf_hash_table (info
)->hgot
->root
.u
.def
.value
= 0x1000;
467 /* This symbol requires a procedure linkage table entry. We
468 actually build the entry in adjust_dynamic_symbol,
469 because this might be a case of linking PIC code without
470 linking in any dynamic objects, in which case we don't
471 need to generate a procedure linkage table after all. */
475 /* It does not make sense to have a procedure linkage
476 table entry for a local symbol. */
477 bfd_set_error (bfd_error_bad_value
);
481 /* Make sure this symbol is output as a dynamic symbol. */
482 if (h
->dynindx
== -1)
484 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
488 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
495 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
501 case R_SPARC_WDISP30
:
502 case R_SPARC_WDISP22
:
503 case R_SPARC_WDISP19
:
504 case R_SPARC_WDISP16
:
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
);
541 sreloc
= bfd_make_section (dynobj
, name
);
542 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
543 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
544 if ((sec
->flags
& SEC_ALLOC
) != 0)
545 flags
|= SEC_ALLOC
| SEC_LOAD
;
547 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
548 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
553 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
566 /* Adjust a symbol defined by a dynamic object and referenced by a
567 regular object. The current definition is in some section of the
568 dynamic object, but we're not including those sections. We have to
569 change the definition to something the rest of the link can
573 elf32_sparc_adjust_dynamic_symbol (info
, h
)
574 struct bfd_link_info
*info
;
575 struct elf_link_hash_entry
*h
;
579 unsigned int power_of_two
;
581 dynobj
= elf_hash_table (info
)->dynobj
;
583 /* Make sure we know what is going on here. */
584 BFD_ASSERT (dynobj
!= NULL
585 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
586 || h
->weakdef
!= NULL
587 || ((h
->elf_link_hash_flags
588 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
589 && (h
->elf_link_hash_flags
590 & ELF_LINK_HASH_REF_REGULAR
) != 0
591 && (h
->elf_link_hash_flags
592 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
594 /* If this is a function, put it in the procedure linkage table. We
595 will fill in the contents of the procedure linkage table later
596 (although we could actually do it here). */
597 if (h
->type
== STT_FUNC
598 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
600 if (! elf_hash_table (info
)->dynamic_sections_created
)
602 /* This case can occur if we saw a WPLT30 reloc in an input
603 file, but none of the input files were dynamic objects.
604 In such a case, we don't actually need to build a
605 procedure linkage table, and we can just do a WDISP30
607 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
611 s
= bfd_get_section_by_name (dynobj
, ".plt");
612 BFD_ASSERT (s
!= NULL
);
614 /* The first four entries in .plt are reserved. */
615 if (s
->_raw_size
== 0)
616 s
->_raw_size
= 4 * PLT_ENTRY_SIZE
;
618 /* The procedure linkage table has a maximum size. */
619 if (s
->_raw_size
>= 0x400000)
621 bfd_set_error (bfd_error_bad_value
);
625 /* If this symbol is not defined in a regular file, and we are
626 not generating a shared library, then set the symbol to this
627 location in the .plt. This is required to make function
628 pointers compare as equal between the normal executable and
629 the shared library. */
631 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
633 h
->root
.u
.def
.section
= s
;
634 h
->root
.u
.def
.value
= s
->_raw_size
;
637 h
->plt_offset
= s
->_raw_size
;
639 /* Make room for this entry. */
640 s
->_raw_size
+= PLT_ENTRY_SIZE
;
642 /* We also need to make an entry in the .rela.plt section. */
644 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
645 BFD_ASSERT (s
!= NULL
);
646 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
651 /* If this is a weak symbol, and there is a real definition, the
652 processor independent code will have arranged for us to see the
653 real definition first, and we can just use the same value. */
654 if (h
->weakdef
!= NULL
)
656 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
657 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
658 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
659 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
663 /* This is a reference to a symbol defined by a dynamic object which
664 is not a function. */
666 /* If we are creating a shared library, we must presume that the
667 only references to the symbol are via the global offset table.
668 For such cases we need not do anything here; the relocations will
669 be handled correctly by relocate_section. */
673 /* We must allocate the symbol in our .dynbss section, which will
674 become part of the .bss section of the executable. There will be
675 an entry for this symbol in the .dynsym section. The dynamic
676 object will contain position independent code, so all references
677 from the dynamic object to this symbol will go through the global
678 offset table. The dynamic linker will use the .dynsym entry to
679 determine the address it must put in the global offset table, so
680 both the dynamic object and the regular object will refer to the
681 same memory location for the variable. */
683 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
684 BFD_ASSERT (s
!= NULL
);
686 /* If the symbol is currently defined in the .bss section of the
687 dynamic object, then it is OK to simply initialize it to zero.
688 If the symbol is in some other section, we must generate a
689 R_SPARC_COPY reloc to tell the dynamic linker to copy the initial
690 value out of the dynamic object and into the runtime process
691 image. We need to remember the offset into the .rel.bss section
692 we are going to use. */
693 if ((h
->root
.u
.def
.section
->flags
& SEC_LOAD
) != 0)
697 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
698 BFD_ASSERT (srel
!= NULL
);
699 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
700 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
703 /* We need to figure out the alignment required for this symbol. I
704 have no idea how ELF linkers handle this. */
705 power_of_two
= bfd_log2 (h
->size
);
706 if (power_of_two
> 3)
709 /* Apply the required alignment. */
710 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
711 (bfd_size_type
) (1 << power_of_two
));
712 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
714 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
718 /* Define the symbol as being at this point in the section. */
719 h
->root
.u
.def
.section
= s
;
720 h
->root
.u
.def
.value
= s
->_raw_size
;
722 /* Increment the section size to make room for the symbol. */
723 s
->_raw_size
+= h
->size
;
728 /* Set the sizes of the dynamic sections. */
731 elf32_sparc_size_dynamic_sections (output_bfd
, info
)
733 struct bfd_link_info
*info
;
740 dynobj
= elf_hash_table (info
)->dynobj
;
741 BFD_ASSERT (dynobj
!= NULL
);
743 if (elf_hash_table (info
)->dynamic_sections_created
)
745 /* Set the contents of the .interp section to the interpreter. */
748 s
= bfd_get_section_by_name (dynobj
, ".interp");
749 BFD_ASSERT (s
!= NULL
);
750 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
751 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
754 /* Make space for the trailing nop in .plt. */
755 s
= bfd_get_section_by_name (dynobj
, ".plt");
756 BFD_ASSERT (s
!= NULL
);
757 if (s
->_raw_size
> 0)
762 /* We may have created entries in the .rela.got section.
763 However, if we are not creating the dynamic sections, we will
764 not actually use these entries. Reset the size of .rela.got,
765 which will cause it to get stripped from the output file
767 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
772 /* The check_relocs and adjust_dynamic_symbol entry points have
773 determined the sizes of the various dynamic sections. Allocate
777 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
782 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
785 /* It's OK to base decisions on the section name, because none
786 of the dynobj section names depend upon the input files. */
787 name
= bfd_get_section_name (dynobj
, s
);
791 if (strncmp (name
, ".rela", 5) == 0)
793 if (s
->_raw_size
== 0)
795 /* If we don't need this section, strip it from the
796 output file. This is to handle .rela.bss and
797 .rel.plt. We must create it in
798 create_dynamic_sections, because it must be created
799 before the linker maps input sections to output
800 sections. The linker does that before
801 adjust_dynamic_symbol is called, and it is that
802 function which decides whether anything needs to go
803 into these sections. */
810 /* If this relocation section applies to a read only
811 section, then we probably need a DT_TEXTREL entry. */
812 target
= bfd_get_section_by_name (output_bfd
, name
+ 5);
814 && (target
->flags
& SEC_READONLY
) != 0)
817 if (strcmp (name
, ".rela.plt") == 0)
820 /* We use the reloc_count field as a counter if we need
821 to copy relocs into the output file. */
825 else if (strcmp (name
, ".plt") != 0
826 && strcmp (name
, ".got") != 0)
828 /* It's not one of our sections, so don't allocate space. */
836 for (spp
= &s
->output_section
->owner
->sections
;
837 *spp
!= s
->output_section
;
840 *spp
= s
->output_section
->next
;
841 --s
->output_section
->owner
->section_count
;
846 /* Allocate memory for the section contents. */
847 s
->contents
= (bfd_byte
*) bfd_alloc (dynobj
, s
->_raw_size
);
848 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
852 if (elf_hash_table (info
)->dynamic_sections_created
)
854 /* Add some entries to the .dynamic section. We fill in the
855 values later, in elf32_sparc_finish_dynamic_sections, but we
856 must add the entries now so that we get the correct size for
857 the .dynamic section. The DT_DEBUG entry is filled in by the
858 dynamic linker and used by the debugger. */
861 if (! bfd_elf32_add_dynamic_entry (info
, DT_DEBUG
, 0))
865 if (! bfd_elf32_add_dynamic_entry (info
, DT_PLTGOT
, 0))
870 if (! bfd_elf32_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
871 || ! bfd_elf32_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
872 || ! bfd_elf32_add_dynamic_entry (info
, DT_JMPREL
, 0))
876 if (! bfd_elf32_add_dynamic_entry (info
, DT_RELA
, 0)
877 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELASZ
, 0)
878 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELAENT
,
879 sizeof (Elf32_External_Rela
)))
884 if (! bfd_elf32_add_dynamic_entry (info
, DT_TEXTREL
, 0))
889 /* If we are generating a shared library, we generate a section
890 symbol for each output section. These are local symbols, which
891 means that they must come first in the dynamic symbol table.
892 That means we must increment the dynamic symbol index of every
893 other dynamic symbol. */
898 c
= bfd_count_sections (output_bfd
);
899 elf_link_hash_traverse (elf_hash_table (info
),
900 elf32_sparc_adjust_dynindx
,
902 elf_hash_table (info
)->dynsymcount
+= c
;
904 for (i
= 1, s
= output_bfd
->sections
; s
!= NULL
; s
= s
->next
, i
++)
906 elf_section_data (s
)->dynindx
= i
;
907 /* These symbols will have no names, so we don't need to
908 fiddle with dynstr_index. */
915 /* Increment the index of a dynamic symbol by a given amount. Called
916 via elf_link_hash_traverse. */
919 elf32_sparc_adjust_dynindx (h
, cparg
)
920 struct elf_link_hash_entry
*h
;
923 int *cp
= (int *) cparg
;
925 if (h
->dynindx
!= -1)
930 /* Relocate a SPARC ELF section. */
933 elf32_sparc_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
934 contents
, relocs
, local_syms
, local_sections
)
936 struct bfd_link_info
*info
;
938 asection
*input_section
;
940 Elf_Internal_Rela
*relocs
;
941 Elf_Internal_Sym
*local_syms
;
942 asection
**local_sections
;
945 Elf_Internal_Shdr
*symtab_hdr
;
946 struct elf_link_hash_entry
**sym_hashes
;
947 bfd_vma
*local_got_offsets
;
952 Elf_Internal_Rela
*rel
;
953 Elf_Internal_Rela
*relend
;
955 dynobj
= elf_hash_table (info
)->dynobj
;
956 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
957 sym_hashes
= elf_sym_hashes (input_bfd
);
958 local_got_offsets
= elf_local_got_offsets (input_bfd
);
960 if (elf_hash_table (info
)->hgot
== NULL
)
963 got_base
= elf_hash_table (info
)->hgot
->root
.u
.def
.value
;
970 relend
= relocs
+ input_section
->reloc_count
;
971 for (; rel
< relend
; rel
++)
974 reloc_howto_type
*howto
;
975 unsigned long r_symndx
;
976 struct elf_link_hash_entry
*h
;
977 Elf_Internal_Sym
*sym
;
980 bfd_reloc_status_type r
;
982 r_type
= ELF32_R_TYPE (rel
->r_info
);
983 if (r_type
< 0 || r_type
>= (int) R_SPARC_max
)
985 bfd_set_error (bfd_error_bad_value
);
988 howto
= _bfd_sparc_elf_howto_table
+ r_type
;
990 r_symndx
= ELF32_R_SYM (rel
->r_info
);
992 if (info
->relocateable
)
994 /* This is a relocateable link. We don't have to change
995 anything, unless the reloc is against a section symbol,
996 in which case we have to adjust according to where the
997 section symbol winds up in the output section. */
998 if (r_symndx
< symtab_hdr
->sh_info
)
1000 sym
= local_syms
+ r_symndx
;
1001 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
1003 sec
= local_sections
[r_symndx
];
1004 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
1011 /* This is a final link. */
1015 if (r_symndx
< symtab_hdr
->sh_info
)
1017 sym
= local_syms
+ r_symndx
;
1018 sec
= local_sections
[r_symndx
];
1019 relocation
= (sec
->output_section
->vma
1020 + sec
->output_offset
1025 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1026 while (h
->root
.type
== bfd_link_hash_indirect
1027 || h
->root
.type
== bfd_link_hash_warning
)
1028 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1029 if (h
->root
.type
== bfd_link_hash_defined
1030 || h
->root
.type
== bfd_link_hash_defweak
)
1032 sec
= h
->root
.u
.def
.section
;
1033 if ((r_type
== R_SPARC_WPLT30
1034 && h
->plt_offset
!= (bfd_vma
) -1)
1035 || ((r_type
== R_SPARC_GOT10
1036 || r_type
== R_SPARC_GOT13
1037 || r_type
== R_SPARC_GOT22
)
1038 && elf_hash_table (info
)->dynamic_sections_created
1041 || (h
->elf_link_hash_flags
1042 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1044 && (! info
->symbolic
1045 || (h
->elf_link_hash_flags
1046 & ELF_LINK_HASH_DEF_REGULAR
) == 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
:
1237 Elf_Internal_Rela outrel
;
1239 /* When generating a shared object, these relocations
1240 are copied into the output file to be resolved at run
1247 name
= (bfd_elf_string_from_elf_section
1249 elf_elfheader (input_bfd
)->e_shstrndx
,
1250 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1254 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1255 && strcmp (bfd_get_section_name (input_bfd
,
1259 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1260 BFD_ASSERT (sreloc
!= NULL
);
1263 outrel
.r_offset
= (rel
->r_offset
1264 + input_section
->output_section
->vma
1265 + input_section
->output_offset
);
1267 && (! info
->symbolic
1268 || (h
->elf_link_hash_flags
1269 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1271 BFD_ASSERT (h
->dynindx
!= -1);
1272 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1273 outrel
.r_addend
= rel
->r_addend
;
1277 if (r_type
== R_SPARC_32
)
1279 outrel
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1280 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1287 sec
= local_sections
[r_symndx
];
1290 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
1292 == bfd_link_hash_defweak
));
1293 sec
= h
->root
.u
.def
.section
;
1295 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
1297 else if (sec
== NULL
|| sec
->owner
== NULL
)
1299 bfd_set_error (bfd_error_bad_value
);
1306 osec
= sec
->output_section
;
1307 indx
= elf_section_data (osec
)->dynindx
;
1312 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
1313 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1317 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1318 (((Elf32_External_Rela
*)
1320 + sreloc
->reloc_count
));
1321 ++sreloc
->reloc_count
;
1323 /* This reloc will be computed at runtime, so there's no
1324 need to do anything now. */
1332 if (r_type
!= R_SPARC_WDISP16
)
1333 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1334 contents
, rel
->r_offset
,
1335 relocation
, rel
->r_addend
);
1340 relocation
+= rel
->r_addend
;
1341 relocation
-= (input_section
->output_section
->vma
1342 + input_section
->output_offset
);
1343 relocation
-= rel
->r_offset
;
1345 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
1346 x
|= ((((relocation
>> 2) & 0xc000) << 6)
1347 | ((relocation
>> 2) & 0x3fff));
1348 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
1350 if ((bfd_signed_vma
) relocation
< - 0x40000
1351 || (bfd_signed_vma
) relocation
> 0x3ffff)
1352 r
= bfd_reloc_overflow
;
1357 if (r
!= bfd_reloc_ok
)
1362 case bfd_reloc_outofrange
:
1364 case bfd_reloc_overflow
:
1369 name
= h
->root
.root
.string
;
1372 name
= bfd_elf_string_from_elf_section (input_bfd
,
1373 symtab_hdr
->sh_link
,
1378 name
= bfd_section_name (input_bfd
, sec
);
1380 if (! ((*info
->callbacks
->reloc_overflow
)
1381 (info
, name
, howto
->name
, (bfd_vma
) 0,
1382 input_bfd
, input_section
, rel
->r_offset
)))
1393 /* Finish up dynamic symbol handling. We set the contents of various
1394 dynamic sections here. */
1397 elf32_sparc_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1399 struct bfd_link_info
*info
;
1400 struct elf_link_hash_entry
*h
;
1401 Elf_Internal_Sym
*sym
;
1405 dynobj
= elf_hash_table (info
)->dynobj
;
1407 if (h
->plt_offset
!= (bfd_vma
) -1)
1411 Elf_Internal_Rela rela
;
1413 /* This symbol has an entry in the procedure linkage table. Set
1416 BFD_ASSERT (h
->dynindx
!= -1);
1418 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1419 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1420 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
);
1422 /* Fill in the entry in the procedure linkage table. */
1423 bfd_put_32 (output_bfd
,
1424 PLT_ENTRY_WORD0
+ h
->plt_offset
,
1425 splt
->contents
+ h
->plt_offset
);
1426 bfd_put_32 (output_bfd
,
1428 + (((- (h
->plt_offset
+ 4)) >> 2) & 0x3fffff)),
1429 splt
->contents
+ h
->plt_offset
+ 4);
1430 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
1431 splt
->contents
+ h
->plt_offset
+ 8);
1433 /* Fill in the entry in the .rela.plt section. */
1434 rela
.r_offset
= (splt
->output_section
->vma
1435 + splt
->output_offset
1437 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_JMP_SLOT
);
1439 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1440 ((Elf32_External_Rela
*) srela
->contents
1441 + h
->plt_offset
/ PLT_ENTRY_SIZE
- 4));
1443 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1445 /* Mark the symbol as undefined, rather than as defined in
1446 the .plt section. Leave the value alone. */
1447 sym
->st_shndx
= SHN_UNDEF
;
1451 if (h
->got_offset
!= (bfd_vma
) -1)
1455 Elf_Internal_Rela rela
;
1457 /* This symbol has an entry in the global offset table. Set it
1460 BFD_ASSERT (h
->dynindx
!= -1);
1462 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1463 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1464 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1466 rela
.r_offset
= (sgot
->output_section
->vma
1467 + sgot
->output_offset
1468 + (h
->got_offset
&~ 1));
1470 /* If this is a -Bsymbolic link, and the symbol is defined
1471 locally, we just want to emit a RELATIVE reloc. The entry in
1472 the global offset table will already have been initialized in
1473 the relocate_section function. */
1476 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
1477 rela
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1480 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got_offset
);
1481 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_GLOB_DAT
);
1485 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1486 ((Elf32_External_Rela
*) srela
->contents
1487 + srela
->reloc_count
));
1488 ++srela
->reloc_count
;
1491 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1494 Elf_Internal_Rela rela
;
1496 /* This symbols needs a copy reloc. Set it up. */
1498 BFD_ASSERT (h
->dynindx
!= -1);
1500 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1502 BFD_ASSERT (s
!= NULL
);
1504 rela
.r_offset
= (h
->root
.u
.def
.value
1505 + h
->root
.u
.def
.section
->output_section
->vma
1506 + h
->root
.u
.def
.section
->output_offset
);
1507 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_COPY
);
1509 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1510 ((Elf32_External_Rela
*) s
->contents
1515 /* Mark some specially defined symbols as absolute. */
1516 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1517 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
1518 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
1519 sym
->st_shndx
= SHN_ABS
;
1524 /* Finish up the dynamic sections. */
1527 elf32_sparc_finish_dynamic_sections (output_bfd
, info
)
1529 struct bfd_link_info
*info
;
1535 dynobj
= elf_hash_table (info
)->dynobj
;
1537 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1539 if (elf_hash_table (info
)->dynamic_sections_created
)
1542 Elf32_External_Dyn
*dyncon
, *dynconend
;
1544 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1545 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
1547 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1548 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
1549 for (; dyncon
< dynconend
; dyncon
++)
1551 Elf_Internal_Dyn dyn
;
1555 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1559 case DT_PLTGOT
: name
= ".plt"; size
= false; break;
1560 case DT_PLTRELSZ
: name
= ".rela.plt"; size
= true; break;
1561 case DT_JMPREL
: name
= ".rela.plt"; size
= false; break;
1562 default: name
= NULL
; size
= false; break;
1569 s
= bfd_get_section_by_name (output_bfd
, name
);
1575 dyn
.d_un
.d_ptr
= s
->vma
;
1578 if (s
->_cooked_size
!= 0)
1579 dyn
.d_un
.d_val
= s
->_cooked_size
;
1581 dyn
.d_un
.d_val
= s
->_raw_size
;
1584 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1588 /* Clear the first four entries in the procedure linkage table,
1589 and put a nop in the last four bytes. */
1590 if (splt
->_raw_size
> 0)
1592 memset (splt
->contents
, 0, 4 * PLT_ENTRY_SIZE
);
1593 bfd_put_32 (output_bfd
, SPARC_NOP
,
1594 splt
->contents
+ splt
->_raw_size
- 4);
1597 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
1601 /* Set the first entry in the global offset table to the address of
1602 the dynamic section. */
1603 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1604 BFD_ASSERT (sgot
!= NULL
);
1605 if (sgot
->_raw_size
> 0)
1608 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1610 bfd_put_32 (output_bfd
,
1611 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1615 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1621 Elf_Internal_Sym sym
;
1623 /* Set up the section symbols for the output sections. */
1625 sdynsym
= bfd_get_section_by_name (dynobj
, ".dynsym");
1626 BFD_ASSERT (sdynsym
!= NULL
);
1630 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
1633 for (s
= output_bfd
->sections
; s
!= NULL
; s
= s
->next
)
1637 sym
.st_value
= s
->vma
;
1639 indx
= elf_section_data (s
)->this_idx
;
1640 BFD_ASSERT (indx
> 0);
1641 sym
.st_shndx
= indx
;
1643 bfd_elf32_swap_symbol_out (output_bfd
, &sym
,
1644 (PTR
) (((Elf32_External_Sym
*)
1646 + elf_section_data (s
)->dynindx
));
1649 /* Set the sh_info field of the output .dynsym section to the
1650 index of the first global symbol. */
1651 elf_section_data (sdynsym
->output_section
)->this_hdr
.sh_info
=
1652 bfd_count_sections (output_bfd
) + 1;
1658 /* Functions for dealing with the e_flags field.
1660 We don't define set_private_flags or copy_private_bfd_data because
1661 the only currently defined values are based on the bfd mach number,
1662 so we use the latter instead and defer setting e_flags until the
1663 file is written out. */
1665 /* Merge backend specific data from an object file to the output
1666 object file when linking. */
1669 elf32_sparc_merge_private_bfd_data (ibfd
, obfd
)
1675 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
1676 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
1682 /* ??? The native linker doesn't do this so we can't (otherwise gcc would
1683 have to know which linker is being used). Instead, the native linker
1684 bumps up the architecture level when it has to. However, I still think
1685 warnings like these are good, so it would be nice to have them turned on
1688 /* If the output machine is normal sparc, we can't allow v9 input files. */
1689 if (bfd_get_mach (obfd
) == bfd_mach_sparc
1690 && (bfd_get_mach (ibfd
) == bfd_mach_sparc_v8plus
1691 || bfd_get_mach (ibfd
) == bfd_mach_sparc_v8plusa
))
1694 (*_bfd_error_handler
)
1695 ("%s: compiled for a v8plus system and target is v8",
1696 bfd_get_filename (ibfd
));
1698 /* If the output machine is v9, we can't allow v9+vis input files. */
1699 if (bfd_get_mach (obfd
) == bfd_mach_sparc_v8plus
1700 && bfd_get_mach (ibfd
) == bfd_mach_sparc_v8plusa
)
1703 (*_bfd_error_handler
)
1704 ("%s: compiled for a v8plusa system and target is v8plus",
1705 bfd_get_filename (ibfd
));
1708 if (bfd_get_mach (ibfd
) >= bfd_mach_sparc_v9
)
1711 (*_bfd_error_handler
)
1712 ("%s: compiled for a 64 bit system and target is 32 bit",
1713 bfd_get_filename (ibfd
));
1715 else if (bfd_get_mach (obfd
) < bfd_get_mach (ibfd
))
1716 bfd_set_arch_mach (obfd
, bfd_arch_sparc
, bfd_get_mach (ibfd
));
1721 bfd_set_error (bfd_error_bad_value
);
1728 /* Set the right machine number. */
1731 elf32_sparc_object_p (abfd
)
1734 if (elf_elfheader (abfd
)->e_machine
== EM_SPARC32PLUS
)
1736 if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US1
)
1737 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
,
1738 bfd_mach_sparc_v8plusa
);
1739 else if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_32PLUS
)
1740 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
,
1741 bfd_mach_sparc_v8plus
);
1746 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
, bfd_mach_sparc
);
1749 /* The final processing done just before writing out the object file.
1750 We need to set the e_machine field appropriately. */
1753 elf32_sparc_final_write_processing (abfd
, linker
)
1757 switch (bfd_get_mach (abfd
))
1759 case bfd_mach_sparc
:
1760 break; /* nothing to do */
1761 case bfd_mach_sparc_v8plus
:
1762 elf_elfheader (abfd
)->e_machine
= EM_SPARC32PLUS
;
1763 elf_elfheader (abfd
)->e_flags
&=~ EF_SPARC_32PLUS_MASK
;
1764 elf_elfheader (abfd
)->e_flags
|= EF_SPARC_32PLUS
;
1766 case bfd_mach_sparc_v8plusa
:
1767 elf_elfheader (abfd
)->e_machine
= EM_SPARC32PLUS
;
1768 elf_elfheader (abfd
)->e_flags
&=~ EF_SPARC_32PLUS_MASK
;
1769 elf_elfheader (abfd
)->e_flags
|= EF_SPARC_32PLUS
| EF_SPARC_SUN_US1
;
1776 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
1777 #define TARGET_BIG_NAME "elf32-sparc"
1778 #define ELF_ARCH bfd_arch_sparc
1779 #define ELF_MACHINE_CODE EM_SPARC
1780 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
1781 #define ELF_MAXPAGESIZE 0x10000
1783 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
1784 #define elf_info_to_howto elf32_sparc_info_to_howto
1785 #define elf_backend_create_dynamic_sections \
1786 _bfd_elf_create_dynamic_sections
1787 #define elf_backend_check_relocs elf32_sparc_check_relocs
1788 #define elf_backend_adjust_dynamic_symbol \
1789 elf32_sparc_adjust_dynamic_symbol
1790 #define elf_backend_size_dynamic_sections \
1791 elf32_sparc_size_dynamic_sections
1792 #define elf_backend_relocate_section elf32_sparc_relocate_section
1793 #define elf_backend_finish_dynamic_symbol \
1794 elf32_sparc_finish_dynamic_symbol
1795 #define elf_backend_finish_dynamic_sections \
1796 elf32_sparc_finish_dynamic_sections
1797 #define bfd_elf32_bfd_merge_private_bfd_data \
1798 elf32_sparc_merge_private_bfd_data
1799 #define elf_backend_object_p elf32_sparc_object_p
1800 #define elf_backend_final_write_processing \
1801 elf32_sparc_final_write_processing
1802 #define elf_backend_want_got_plt 0
1803 #define elf_backend_plt_readonly 0
1804 #define elf_backend_want_plt_sym 1
1806 #include "elf32-target.h"