1 /* SPARC-specific support for 64-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "opcode/sparc.h"
27 /* This is defined if one wants to build upward compatible binaries
28 with the original sparc64-elf toolchain. The support is kept in for
29 now but is turned off by default. dje 970930 */
30 /*#define SPARC64_OLD_RELOCS*/
32 #include "elf/sparc.h"
34 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
35 #define MINUS_ONE (~ (bfd_vma) 0)
37 static struct bfd_link_hash_table
* sparc64_elf_bfd_link_hash_table_create
39 static bfd_reloc_status_type init_insn_reloc
40 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*,
41 bfd
*, bfd_vma
*, bfd_vma
*));
42 static reloc_howto_type
*sparc64_elf_reloc_type_lookup
43 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
44 static void sparc64_elf_info_to_howto
45 PARAMS ((bfd
*, arelent
*, Elf_Internal_Rela
*));
47 static void sparc64_elf_build_plt
48 PARAMS ((bfd
*, unsigned char *, int));
49 static bfd_vma sparc64_elf_plt_entry_offset
51 static bfd_vma sparc64_elf_plt_ptr_offset
54 static boolean sparc64_elf_check_relocs
55 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*sec
,
56 const Elf_Internal_Rela
*));
57 static boolean sparc64_elf_adjust_dynamic_symbol
58 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
59 static boolean sparc64_elf_size_dynamic_sections
60 PARAMS ((bfd
*, struct bfd_link_info
*));
61 static int sparc64_elf_get_symbol_type
62 PARAMS (( Elf_Internal_Sym
*, int));
63 static boolean sparc64_elf_add_symbol_hook
64 PARAMS ((bfd
*, struct bfd_link_info
*, const Elf_Internal_Sym
*,
65 const char **, flagword
*, asection
**, bfd_vma
*));
66 static boolean sparc64_elf_output_arch_syms
67 PARAMS ((bfd
*, struct bfd_link_info
*, PTR
,
68 boolean (*) (PTR
, const char *, Elf_Internal_Sym
*, asection
*)));
69 static void sparc64_elf_symbol_processing
70 PARAMS ((bfd
*, asymbol
*));
72 static boolean sparc64_elf_copy_private_bfd_data
73 PARAMS ((bfd
*, bfd
*));
74 static boolean sparc64_elf_merge_private_bfd_data
75 PARAMS ((bfd
*, bfd
*));
77 static const char *sparc64_elf_print_symbol_all
78 PARAMS ((bfd
*, PTR
, asymbol
*));
79 static boolean sparc64_elf_relax_section
80 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
81 static boolean sparc64_elf_relocate_section
82 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
83 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
84 static boolean sparc64_elf_finish_dynamic_symbol
85 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
87 static boolean sparc64_elf_finish_dynamic_sections
88 PARAMS ((bfd
*, struct bfd_link_info
*));
89 static boolean sparc64_elf_object_p
PARAMS ((bfd
*));
90 static long sparc64_elf_get_reloc_upper_bound
PARAMS ((bfd
*, asection
*));
91 static long sparc64_elf_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
92 static boolean sparc64_elf_slurp_one_reloc_table
93 PARAMS ((bfd
*, asection
*, Elf_Internal_Shdr
*, asymbol
**, boolean
));
94 static boolean sparc64_elf_slurp_reloc_table
95 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
96 static long sparc64_elf_canonicalize_dynamic_reloc
97 PARAMS ((bfd
*, arelent
**, asymbol
**));
98 static void sparc64_elf_write_relocs
PARAMS ((bfd
*, asection
*, PTR
));
100 /* The relocation "howto" table. */
102 static bfd_reloc_status_type sparc_elf_notsup_reloc
103 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
104 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
105 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
106 static bfd_reloc_status_type sparc_elf_hix22_reloc
107 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
108 static bfd_reloc_status_type sparc_elf_lox10_reloc
109 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
111 static reloc_howto_type sparc64_elf_howto_table
[] =
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_8
, 0,0, 8,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_8", false,0,0x000000ff,true),
115 HOWTO(R_SPARC_16
, 0,1,16,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_16", false,0,0x0000ffff,true),
116 HOWTO(R_SPARC_32
, 0,2,32,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_32", false,0,0xffffffff,true),
117 HOWTO(R_SPARC_DISP8
, 0,0, 8,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_DISP8", false,0,0x000000ff,true),
118 HOWTO(R_SPARC_DISP16
, 0,1,16,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_DISP16", false,0,0x0000ffff,true),
119 HOWTO(R_SPARC_DISP32
, 0,2,32,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_DISP32", false,0,0x00ffffff,true),
120 HOWTO(R_SPARC_WDISP30
, 2,2,30,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_WDISP30", false,0,0x3fffffff,true),
121 HOWTO(R_SPARC_WDISP22
, 2,2,22,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_WDISP22", false,0,0x003fffff,true),
122 HOWTO(R_SPARC_HI22
, 10,2,22,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_HI22", false,0,0x003fffff,true),
123 HOWTO(R_SPARC_22
, 0,2,22,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_22", false,0,0x003fffff,true),
124 HOWTO(R_SPARC_13
, 0,2,13,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_13", false,0,0x00001fff,true),
125 HOWTO(R_SPARC_LO10
, 0,2,10,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_LO10", false,0,0x000003ff,true),
126 HOWTO(R_SPARC_GOT10
, 0,2,10,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_GOT10", false,0,0x000003ff,true),
127 HOWTO(R_SPARC_GOT13
, 0,2,13,false,0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_GOT13", false,0,0x00001fff,true),
128 HOWTO(R_SPARC_GOT22
, 10,2,22,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_GOT22", false,0,0x003fffff,true),
129 HOWTO(R_SPARC_PC10
, 0,2,10,true, 0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_PC10", false,0,0x000003ff,true),
130 HOWTO(R_SPARC_PC22
, 10,2,22,true, 0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_PC22", false,0,0x003fffff,true),
131 HOWTO(R_SPARC_WPLT30
, 2,2,30,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_WPLT30", false,0,0x3fffffff,true),
132 HOWTO(R_SPARC_COPY
, 0,0,00,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_COPY", false,0,0x00000000,true),
133 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),
134 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),
135 HOWTO(R_SPARC_RELATIVE
, 0,0,00,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_RELATIVE",false,0,0x00000000,true),
136 HOWTO(R_SPARC_UA32
, 0,2,32,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_UA32", false,0,0xffffffff,true),
137 #ifndef SPARC64_OLD_RELOCS
138 /* These aren't implemented yet. */
139 HOWTO(R_SPARC_PLT32
, 0,0,00,false,0,complain_overflow_dont
, sparc_elf_notsup_reloc
, "R_SPARC_PLT32", false,0,0x00000000,true),
140 HOWTO(R_SPARC_HIPLT22
, 0,0,00,false,0,complain_overflow_dont
, sparc_elf_notsup_reloc
, "R_SPARC_HIPLT22", false,0,0x00000000,true),
141 HOWTO(R_SPARC_LOPLT10
, 0,0,00,false,0,complain_overflow_dont
, sparc_elf_notsup_reloc
, "R_SPARC_LOPLT10", false,0,0x00000000,true),
142 HOWTO(R_SPARC_PCPLT32
, 0,0,00,false,0,complain_overflow_dont
, sparc_elf_notsup_reloc
, "R_SPARC_PCPLT32", false,0,0x00000000,true),
143 HOWTO(R_SPARC_PCPLT22
, 0,0,00,false,0,complain_overflow_dont
, sparc_elf_notsup_reloc
, "R_SPARC_PCPLT22", false,0,0x00000000,true),
144 HOWTO(R_SPARC_PCPLT10
, 0,0,00,false,0,complain_overflow_dont
, sparc_elf_notsup_reloc
, "R_SPARC_PCPLT10", false,0,0x00000000,true),
146 HOWTO(R_SPARC_10
, 0,2,10,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_10", false,0,0x000003ff,true),
147 HOWTO(R_SPARC_11
, 0,2,11,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_11", false,0,0x000007ff,true),
148 HOWTO(R_SPARC_64
, 0,4,64,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_64", false,0,MINUS_ONE
, true),
149 HOWTO(R_SPARC_OLO10
, 0,2,13,false,0,complain_overflow_signed
, sparc_elf_notsup_reloc
, "R_SPARC_OLO10", false,0,0x00001fff,true),
150 HOWTO(R_SPARC_HH22
, 42,2,22,false,0,complain_overflow_unsigned
,bfd_elf_generic_reloc
, "R_SPARC_HH22", false,0,0x003fffff,true),
151 HOWTO(R_SPARC_HM10
, 32,2,10,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_HM10", false,0,0x000003ff,true),
152 HOWTO(R_SPARC_LM22
, 10,2,22,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_LM22", false,0,0x003fffff,true),
153 HOWTO(R_SPARC_PC_HH22
, 42,2,22,true, 0,complain_overflow_unsigned
,bfd_elf_generic_reloc
, "R_SPARC_PC_HH22", false,0,0x003fffff,true),
154 HOWTO(R_SPARC_PC_HM10
, 32,2,10,true, 0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_PC_HM10", false,0,0x000003ff,true),
155 HOWTO(R_SPARC_PC_LM22
, 10,2,22,true, 0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_PC_LM22", false,0,0x003fffff,true),
156 HOWTO(R_SPARC_WDISP16
, 2,2,16,true, 0,complain_overflow_signed
, sparc_elf_wdisp16_reloc
,"R_SPARC_WDISP16", false,0,0x00000000,true),
157 HOWTO(R_SPARC_WDISP19
, 2,2,19,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
158 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),
159 HOWTO(R_SPARC_7
, 0,2, 7,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_7", false,0,0x0000007f,true),
160 HOWTO(R_SPARC_5
, 0,2, 5,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_5", false,0,0x0000001f,true),
161 HOWTO(R_SPARC_6
, 0,2, 6,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_6", false,0,0x0000003f,true),
162 HOWTO(R_SPARC_DISP64
, 0,4,64,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_DISP64", false,0,MINUS_ONE
, true),
163 HOWTO(R_SPARC_PLT64
, 0,4,64,false,0,complain_overflow_bitfield
,sparc_elf_notsup_reloc
, "R_SPARC_PLT64", false,0,MINUS_ONE
, false),
164 HOWTO(R_SPARC_HIX22
, 0,4, 0,false,0,complain_overflow_bitfield
,sparc_elf_hix22_reloc
, "R_SPARC_HIX22", false,0,MINUS_ONE
, false),
165 HOWTO(R_SPARC_LOX10
, 0,4, 0,false,0,complain_overflow_dont
, sparc_elf_lox10_reloc
, "R_SPARC_LOX10", false,0,MINUS_ONE
, false),
166 HOWTO(R_SPARC_H44
, 22,2,22,false,0,complain_overflow_unsigned
,bfd_elf_generic_reloc
, "R_SPARC_H44", false,0,0x003fffff,false),
167 HOWTO(R_SPARC_M44
, 12,2,10,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_M44", false,0,0x000003ff,false),
168 HOWTO(R_SPARC_L44
, 0,2,13,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_L44", false,0,0x00000fff,false),
169 HOWTO(R_SPARC_REGISTER
, 0,4, 0,false,0,complain_overflow_bitfield
,sparc_elf_notsup_reloc
, "R_SPARC_REGISTER",false,0,MINUS_ONE
, false),
170 HOWTO(R_SPARC_UA64
, 0,4,64,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_UA64", false,0,MINUS_ONE
, true),
171 HOWTO(R_SPARC_UA16
, 0,1,16,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_UA16", false,0,0x0000ffff,true)
174 struct elf_reloc_map
{
175 bfd_reloc_code_real_type bfd_reloc_val
;
176 unsigned char elf_reloc_val
;
179 static CONST
struct elf_reloc_map sparc_reloc_map
[] =
181 { BFD_RELOC_NONE
, R_SPARC_NONE
, },
182 { BFD_RELOC_16
, R_SPARC_16
, },
183 { BFD_RELOC_8
, R_SPARC_8
},
184 { BFD_RELOC_8_PCREL
, R_SPARC_DISP8
},
185 { BFD_RELOC_CTOR
, R_SPARC_64
},
186 { BFD_RELOC_32
, R_SPARC_32
},
187 { BFD_RELOC_32_PCREL
, R_SPARC_DISP32
},
188 { BFD_RELOC_HI22
, R_SPARC_HI22
},
189 { BFD_RELOC_LO10
, R_SPARC_LO10
, },
190 { BFD_RELOC_32_PCREL_S2
, R_SPARC_WDISP30
},
191 { BFD_RELOC_SPARC22
, R_SPARC_22
},
192 { BFD_RELOC_SPARC13
, R_SPARC_13
},
193 { BFD_RELOC_SPARC_GOT10
, R_SPARC_GOT10
},
194 { BFD_RELOC_SPARC_GOT13
, R_SPARC_GOT13
},
195 { BFD_RELOC_SPARC_GOT22
, R_SPARC_GOT22
},
196 { BFD_RELOC_SPARC_PC10
, R_SPARC_PC10
},
197 { BFD_RELOC_SPARC_PC22
, R_SPARC_PC22
},
198 { BFD_RELOC_SPARC_WPLT30
, R_SPARC_WPLT30
},
199 { BFD_RELOC_SPARC_COPY
, R_SPARC_COPY
},
200 { BFD_RELOC_SPARC_GLOB_DAT
, R_SPARC_GLOB_DAT
},
201 { BFD_RELOC_SPARC_JMP_SLOT
, R_SPARC_JMP_SLOT
},
202 { BFD_RELOC_SPARC_RELATIVE
, R_SPARC_RELATIVE
},
203 { BFD_RELOC_SPARC_WDISP22
, R_SPARC_WDISP22
},
204 { BFD_RELOC_SPARC_UA16
, R_SPARC_UA16
},
205 { BFD_RELOC_SPARC_UA32
, R_SPARC_UA32
},
206 { BFD_RELOC_SPARC_UA64
, R_SPARC_UA64
},
207 { BFD_RELOC_SPARC_10
, R_SPARC_10
},
208 { BFD_RELOC_SPARC_11
, R_SPARC_11
},
209 { BFD_RELOC_SPARC_64
, R_SPARC_64
},
210 { BFD_RELOC_SPARC_OLO10
, R_SPARC_OLO10
},
211 { BFD_RELOC_SPARC_HH22
, R_SPARC_HH22
},
212 { BFD_RELOC_SPARC_HM10
, R_SPARC_HM10
},
213 { BFD_RELOC_SPARC_LM22
, R_SPARC_LM22
},
214 { BFD_RELOC_SPARC_PC_HH22
, R_SPARC_PC_HH22
},
215 { BFD_RELOC_SPARC_PC_HM10
, R_SPARC_PC_HM10
},
216 { BFD_RELOC_SPARC_PC_LM22
, R_SPARC_PC_LM22
},
217 { BFD_RELOC_SPARC_WDISP16
, R_SPARC_WDISP16
},
218 { BFD_RELOC_SPARC_WDISP19
, R_SPARC_WDISP19
},
219 { BFD_RELOC_SPARC_7
, R_SPARC_7
},
220 { BFD_RELOC_SPARC_5
, R_SPARC_5
},
221 { BFD_RELOC_SPARC_6
, R_SPARC_6
},
222 { BFD_RELOC_SPARC_DISP64
, R_SPARC_DISP64
},
223 { BFD_RELOC_SPARC_PLT64
, R_SPARC_PLT64
},
224 { BFD_RELOC_SPARC_HIX22
, R_SPARC_HIX22
},
225 { BFD_RELOC_SPARC_LOX10
, R_SPARC_LOX10
},
226 { BFD_RELOC_SPARC_H44
, R_SPARC_H44
},
227 { BFD_RELOC_SPARC_M44
, R_SPARC_M44
},
228 { BFD_RELOC_SPARC_L44
, R_SPARC_L44
},
229 { BFD_RELOC_SPARC_REGISTER
, R_SPARC_REGISTER
}
232 static reloc_howto_type
*
233 sparc64_elf_reloc_type_lookup (abfd
, code
)
234 bfd
*abfd ATTRIBUTE_UNUSED
;
235 bfd_reloc_code_real_type code
;
238 for (i
= 0; i
< sizeof (sparc_reloc_map
) / sizeof (struct elf_reloc_map
); i
++)
240 if (sparc_reloc_map
[i
].bfd_reloc_val
== code
)
241 return &sparc64_elf_howto_table
[(int) sparc_reloc_map
[i
].elf_reloc_val
];
247 sparc64_elf_info_to_howto (abfd
, cache_ptr
, dst
)
248 bfd
*abfd ATTRIBUTE_UNUSED
;
250 Elf64_Internal_Rela
*dst
;
252 BFD_ASSERT (ELF64_R_TYPE_ID (dst
->r_info
) < (unsigned int) R_SPARC_max_std
);
253 cache_ptr
->howto
= &sparc64_elf_howto_table
[ELF64_R_TYPE_ID (dst
->r_info
)];
256 /* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA
257 section can represent up to two relocs, we must tell the user to allocate
261 sparc64_elf_get_reloc_upper_bound (abfd
, sec
)
262 bfd
*abfd ATTRIBUTE_UNUSED
;
265 return (sec
->reloc_count
* 2 + 1) * sizeof (arelent
*);
269 sparc64_elf_get_dynamic_reloc_upper_bound (abfd
)
272 return _bfd_elf_get_dynamic_reloc_upper_bound (abfd
) * 2;
275 /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of
276 them. We cannot use generic elf routines for this, because R_SPARC_OLO10
277 has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations
278 for the same location, R_SPARC_LO10 and R_SPARC_13. */
281 sparc64_elf_slurp_one_reloc_table (abfd
, asect
, rel_hdr
, symbols
, dynamic
)
284 Elf_Internal_Shdr
*rel_hdr
;
288 PTR allocated
= NULL
;
289 bfd_byte
*native_relocs
;
296 allocated
= (PTR
) bfd_malloc ((size_t) rel_hdr
->sh_size
);
297 if (allocated
== NULL
)
300 if (bfd_seek (abfd
, rel_hdr
->sh_offset
, SEEK_SET
) != 0
301 || (bfd_read (allocated
, 1, rel_hdr
->sh_size
, abfd
)
302 != rel_hdr
->sh_size
))
305 native_relocs
= (bfd_byte
*) allocated
;
307 relents
= asect
->relocation
+ asect
->reloc_count
;
309 entsize
= rel_hdr
->sh_entsize
;
310 BFD_ASSERT (entsize
== sizeof (Elf64_External_Rela
));
312 count
= rel_hdr
->sh_size
/ entsize
;
314 for (i
= 0, relent
= relents
; i
< count
;
315 i
++, relent
++, native_relocs
+= entsize
)
317 Elf_Internal_Rela rela
;
319 bfd_elf64_swap_reloca_in (abfd
, (Elf64_External_Rela
*) native_relocs
, &rela
);
321 /* The address of an ELF reloc is section relative for an object
322 file, and absolute for an executable file or shared library.
323 The address of a normal BFD reloc is always section relative,
324 and the address of a dynamic reloc is absolute.. */
325 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0 || dynamic
)
326 relent
->address
= rela
.r_offset
;
328 relent
->address
= rela
.r_offset
- asect
->vma
;
330 if (ELF64_R_SYM (rela
.r_info
) == 0)
331 relent
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
336 ps
= symbols
+ ELF64_R_SYM (rela
.r_info
) - 1;
339 /* Canonicalize ELF section symbols. FIXME: Why? */
340 if ((s
->flags
& BSF_SECTION_SYM
) == 0)
341 relent
->sym_ptr_ptr
= ps
;
343 relent
->sym_ptr_ptr
= s
->section
->symbol_ptr_ptr
;
346 relent
->addend
= rela
.r_addend
;
348 BFD_ASSERT (ELF64_R_TYPE_ID (rela
.r_info
) < (unsigned int) R_SPARC_max_std
);
349 if (ELF64_R_TYPE_ID (rela
.r_info
) == R_SPARC_OLO10
)
351 relent
->howto
= &sparc64_elf_howto_table
[R_SPARC_LO10
];
352 relent
[1].address
= relent
->address
;
354 relent
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
355 relent
->addend
= ELF64_R_TYPE_DATA (rela
.r_info
);
356 relent
->howto
= &sparc64_elf_howto_table
[R_SPARC_13
];
359 relent
->howto
= &sparc64_elf_howto_table
[ELF64_R_TYPE_ID (rela
.r_info
)];
362 asect
->reloc_count
+= relent
- relents
;
364 if (allocated
!= NULL
)
370 if (allocated
!= NULL
)
375 /* Read in and swap the external relocs. */
378 sparc64_elf_slurp_reloc_table (abfd
, asect
, symbols
, dynamic
)
384 struct bfd_elf_section_data
* const d
= elf_section_data (asect
);
385 Elf_Internal_Shdr
*rel_hdr
;
386 Elf_Internal_Shdr
*rel_hdr2
;
388 if (asect
->relocation
!= NULL
)
393 if ((asect
->flags
& SEC_RELOC
) == 0
394 || asect
->reloc_count
== 0)
397 rel_hdr
= &d
->rel_hdr
;
398 rel_hdr2
= d
->rel_hdr2
;
400 BFD_ASSERT (asect
->rel_filepos
== rel_hdr
->sh_offset
401 || (rel_hdr2
&& asect
->rel_filepos
== rel_hdr2
->sh_offset
));
405 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
406 case because relocations against this section may use the
407 dynamic symbol table, and in that case bfd_section_from_shdr
408 in elf.c does not update the RELOC_COUNT. */
409 if (asect
->_raw_size
== 0)
412 rel_hdr
= &d
->this_hdr
;
413 asect
->reloc_count
= NUM_SHDR_ENTRIES (rel_hdr
);
417 asect
->relocation
= ((arelent
*)
419 asect
->reloc_count
* 2 * sizeof (arelent
)));
420 if (asect
->relocation
== NULL
)
423 /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count. */
424 asect
->reloc_count
= 0;
426 if (!sparc64_elf_slurp_one_reloc_table (abfd
, asect
, rel_hdr
, symbols
,
431 && !sparc64_elf_slurp_one_reloc_table (abfd
, asect
, rel_hdr2
, symbols
,
438 /* Canonicalize the dynamic relocation entries. Note that we return
439 the dynamic relocations as a single block, although they are
440 actually associated with particular sections; the interface, which
441 was designed for SunOS style shared libraries, expects that there
442 is only one set of dynamic relocs. Any section that was actually
443 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
444 the dynamic symbol table, is considered to be a dynamic reloc
448 sparc64_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
456 if (elf_dynsymtab (abfd
) == 0)
458 bfd_set_error (bfd_error_invalid_operation
);
463 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
465 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
466 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
471 if (! sparc64_elf_slurp_reloc_table (abfd
, s
, syms
, true))
473 count
= s
->reloc_count
;
475 for (i
= 0; i
< count
; i
++)
486 /* Write out the relocs. */
489 sparc64_elf_write_relocs (abfd
, sec
, data
)
494 boolean
*failedp
= (boolean
*) data
;
495 Elf_Internal_Shdr
*rela_hdr
;
496 Elf64_External_Rela
*outbound_relocas
, *src_rela
;
497 unsigned int idx
, count
;
498 asymbol
*last_sym
= 0;
499 int last_sym_idx
= 0;
501 /* If we have already failed, don't do anything. */
505 if ((sec
->flags
& SEC_RELOC
) == 0)
508 /* The linker backend writes the relocs out itself, and sets the
509 reloc_count field to zero to inhibit writing them here. Also,
510 sometimes the SEC_RELOC flag gets set even when there aren't any
512 if (sec
->reloc_count
== 0)
515 /* We can combine two relocs that refer to the same address
516 into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the
517 latter is R_SPARC_13 with no associated symbol. */
519 for (idx
= 0; idx
< sec
->reloc_count
; idx
++)
525 addr
= sec
->orelocation
[idx
]->address
;
526 if (sec
->orelocation
[idx
]->howto
->type
== R_SPARC_LO10
527 && idx
< sec
->reloc_count
- 1)
529 arelent
*r
= sec
->orelocation
[idx
+ 1];
531 if (r
->howto
->type
== R_SPARC_13
532 && r
->address
== addr
533 && bfd_is_abs_section ((*r
->sym_ptr_ptr
)->section
)
534 && (*r
->sym_ptr_ptr
)->value
== 0)
539 rela_hdr
= &elf_section_data (sec
)->rel_hdr
;
541 rela_hdr
->sh_size
= rela_hdr
->sh_entsize
* count
;
542 rela_hdr
->contents
= (PTR
) bfd_alloc (abfd
, rela_hdr
->sh_size
);
543 if (rela_hdr
->contents
== NULL
)
549 /* Figure out whether the relocations are RELA or REL relocations. */
550 if (rela_hdr
->sh_type
!= SHT_RELA
)
553 /* orelocation has the data, reloc_count has the count... */
554 outbound_relocas
= (Elf64_External_Rela
*) rela_hdr
->contents
;
555 src_rela
= outbound_relocas
;
557 for (idx
= 0; idx
< sec
->reloc_count
; idx
++)
559 Elf_Internal_Rela dst_rela
;
564 ptr
= sec
->orelocation
[idx
];
566 /* The address of an ELF reloc is section relative for an object
567 file, and absolute for an executable file or shared library.
568 The address of a BFD reloc is always section relative. */
569 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
570 dst_rela
.r_offset
= ptr
->address
;
572 dst_rela
.r_offset
= ptr
->address
+ sec
->vma
;
574 sym
= *ptr
->sym_ptr_ptr
;
577 else if (bfd_is_abs_section (sym
->section
) && sym
->value
== 0)
582 n
= _bfd_elf_symbol_from_bfd_symbol (abfd
, &sym
);
591 if ((*ptr
->sym_ptr_ptr
)->the_bfd
!= NULL
592 && (*ptr
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
593 && ! _bfd_elf_validate_reloc (abfd
, ptr
))
599 if (ptr
->howto
->type
== R_SPARC_LO10
600 && idx
< sec
->reloc_count
- 1)
602 arelent
*r
= sec
->orelocation
[idx
+ 1];
604 if (r
->howto
->type
== R_SPARC_13
605 && r
->address
== ptr
->address
606 && bfd_is_abs_section ((*r
->sym_ptr_ptr
)->section
)
607 && (*r
->sym_ptr_ptr
)->value
== 0)
611 = ELF64_R_INFO (n
, ELF64_R_TYPE_INFO (r
->addend
,
615 dst_rela
.r_info
= ELF64_R_INFO (n
, R_SPARC_LO10
);
618 dst_rela
.r_info
= ELF64_R_INFO (n
, ptr
->howto
->type
);
620 dst_rela
.r_addend
= ptr
->addend
;
621 bfd_elf64_swap_reloca_out (abfd
, &dst_rela
, src_rela
);
626 /* Sparc64 ELF linker hash table. */
628 struct sparc64_elf_app_reg
631 unsigned short shndx
;
636 struct sparc64_elf_link_hash_table
638 struct elf_link_hash_table root
;
640 struct sparc64_elf_app_reg app_regs
[4];
643 /* Get the Sparc64 ELF linker hash table from a link_info structure. */
645 #define sparc64_elf_hash_table(p) \
646 ((struct sparc64_elf_link_hash_table *) ((p)->hash))
648 /* Create a Sparc64 ELF linker hash table. */
650 static struct bfd_link_hash_table
*
651 sparc64_elf_bfd_link_hash_table_create (abfd
)
654 struct sparc64_elf_link_hash_table
*ret
;
656 ret
= ((struct sparc64_elf_link_hash_table
*)
657 bfd_zalloc (abfd
, sizeof (struct sparc64_elf_link_hash_table
)));
658 if (ret
== (struct sparc64_elf_link_hash_table
*) NULL
)
661 if (! _bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
662 _bfd_elf_link_hash_newfunc
))
664 bfd_release (abfd
, ret
);
668 return &ret
->root
.root
;
671 /* Utility for performing the standard initial work of an instruction
673 *PRELOCATION will contain the relocated item.
674 *PINSN will contain the instruction from the input stream.
675 If the result is `bfd_reloc_other' the caller can continue with
676 performing the relocation. Otherwise it must stop and return the
677 value to its caller. */
679 static bfd_reloc_status_type
680 init_insn_reloc (abfd
,
689 arelent
*reloc_entry
;
692 asection
*input_section
;
694 bfd_vma
*prelocation
;
698 reloc_howto_type
*howto
= reloc_entry
->howto
;
700 if (output_bfd
!= (bfd
*) NULL
701 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
702 && (! howto
->partial_inplace
703 || reloc_entry
->addend
== 0))
705 reloc_entry
->address
+= input_section
->output_offset
;
709 /* This works because partial_inplace == false. */
710 if (output_bfd
!= NULL
)
711 return bfd_reloc_continue
;
713 if (reloc_entry
->address
> input_section
->_cooked_size
)
714 return bfd_reloc_outofrange
;
716 relocation
= (symbol
->value
717 + symbol
->section
->output_section
->vma
718 + symbol
->section
->output_offset
);
719 relocation
+= reloc_entry
->addend
;
720 if (howto
->pc_relative
)
722 relocation
-= (input_section
->output_section
->vma
723 + input_section
->output_offset
);
724 relocation
-= reloc_entry
->address
;
727 *prelocation
= relocation
;
728 *pinsn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
729 return bfd_reloc_other
;
732 /* For unsupported relocs. */
734 static bfd_reloc_status_type
735 sparc_elf_notsup_reloc (abfd
,
742 bfd
*abfd ATTRIBUTE_UNUSED
;
743 arelent
*reloc_entry ATTRIBUTE_UNUSED
;
744 asymbol
*symbol ATTRIBUTE_UNUSED
;
745 PTR data ATTRIBUTE_UNUSED
;
746 asection
*input_section ATTRIBUTE_UNUSED
;
747 bfd
*output_bfd ATTRIBUTE_UNUSED
;
748 char **error_message ATTRIBUTE_UNUSED
;
750 return bfd_reloc_notsupported
;
753 /* Handle the WDISP16 reloc. */
755 static bfd_reloc_status_type
756 sparc_elf_wdisp16_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
757 output_bfd
, error_message
)
759 arelent
*reloc_entry
;
762 asection
*input_section
;
764 char **error_message ATTRIBUTE_UNUSED
;
768 bfd_reloc_status_type status
;
770 status
= init_insn_reloc (abfd
, reloc_entry
, symbol
, data
,
771 input_section
, output_bfd
, &relocation
, &insn
);
772 if (status
!= bfd_reloc_other
)
775 insn
= (insn
& ~0x303fff) | ((((relocation
>> 2) & 0xc000) << 6)
776 | ((relocation
>> 2) & 0x3fff));
777 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
779 if ((bfd_signed_vma
) relocation
< - 0x40000
780 || (bfd_signed_vma
) relocation
> 0x3ffff)
781 return bfd_reloc_overflow
;
786 /* Handle the HIX22 reloc. */
788 static bfd_reloc_status_type
789 sparc_elf_hix22_reloc (abfd
,
797 arelent
*reloc_entry
;
800 asection
*input_section
;
802 char **error_message ATTRIBUTE_UNUSED
;
806 bfd_reloc_status_type status
;
808 status
= init_insn_reloc (abfd
, reloc_entry
, symbol
, data
,
809 input_section
, output_bfd
, &relocation
, &insn
);
810 if (status
!= bfd_reloc_other
)
813 relocation
^= MINUS_ONE
;
814 insn
= (insn
& ~0x3fffff) | ((relocation
>> 10) & 0x3fffff);
815 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
817 if ((relocation
& ~ (bfd_vma
) 0xffffffff) != 0)
818 return bfd_reloc_overflow
;
823 /* Handle the LOX10 reloc. */
825 static bfd_reloc_status_type
826 sparc_elf_lox10_reloc (abfd
,
834 arelent
*reloc_entry
;
837 asection
*input_section
;
839 char **error_message ATTRIBUTE_UNUSED
;
843 bfd_reloc_status_type status
;
845 status
= init_insn_reloc (abfd
, reloc_entry
, symbol
, data
,
846 input_section
, output_bfd
, &relocation
, &insn
);
847 if (status
!= bfd_reloc_other
)
850 insn
= (insn
& ~0x1fff) | 0x1c00 | (relocation
& 0x3ff);
851 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
858 /* Both the headers and the entries are icache aligned. */
859 #define PLT_ENTRY_SIZE 32
860 #define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE)
861 #define LARGE_PLT_THRESHOLD 32768
862 #define GOT_RESERVED_ENTRIES 1
864 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
866 /* Fill in the .plt section. */
869 sparc64_elf_build_plt (output_bfd
, contents
, nentries
)
871 unsigned char *contents
;
874 const unsigned int nop
= 0x01000000;
877 /* The first four entries are reserved, and are initially undefined.
878 We fill them with `illtrap 0' to force ld.so to do something. */
880 for (i
= 0; i
< PLT_HEADER_SIZE
/4; ++i
)
881 bfd_put_32 (output_bfd
, 0, contents
+i
*4);
883 /* The first 32768 entries are close enough to plt1 to get there via
884 a straight branch. */
886 for (i
= 4; i
< LARGE_PLT_THRESHOLD
&& i
< nentries
; ++i
)
888 unsigned char *entry
= contents
+ i
* PLT_ENTRY_SIZE
;
889 unsigned int sethi
, ba
;
891 /* sethi (. - plt0), %g1 */
892 sethi
= 0x03000000 | (i
* PLT_ENTRY_SIZE
);
894 /* ba,a,pt %xcc, plt1 */
895 ba
= 0x30680000 | (((contents
+PLT_ENTRY_SIZE
) - (entry
+4)) / 4 & 0x7ffff);
897 bfd_put_32 (output_bfd
, sethi
, entry
);
898 bfd_put_32 (output_bfd
, ba
, entry
+4);
899 bfd_put_32 (output_bfd
, nop
, entry
+8);
900 bfd_put_32 (output_bfd
, nop
, entry
+12);
901 bfd_put_32 (output_bfd
, nop
, entry
+16);
902 bfd_put_32 (output_bfd
, nop
, entry
+20);
903 bfd_put_32 (output_bfd
, nop
, entry
+24);
904 bfd_put_32 (output_bfd
, nop
, entry
+28);
907 /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of
908 160: 160 entries and 160 pointers. This is to separate code from data,
909 which is much friendlier on the cache. */
911 for (; i
< nentries
; i
+= 160)
913 int block
= (i
+ 160 <= nentries
? 160 : nentries
- i
);
914 for (j
= 0; j
< block
; ++j
)
916 unsigned char *entry
, *ptr
;
919 entry
= contents
+ i
*PLT_ENTRY_SIZE
+ j
*4*6;
920 ptr
= contents
+ i
*PLT_ENTRY_SIZE
+ block
*4*6 + j
*8;
922 /* ldx [%o7 + ptr - entry+4], %g1 */
923 ldx
= 0xc25be000 | ((ptr
- entry
+4) & 0x1fff);
925 bfd_put_32 (output_bfd
, 0x8a10000f, entry
); /* mov %o7,%g5 */
926 bfd_put_32 (output_bfd
, 0x40000002, entry
+4); /* call .+8 */
927 bfd_put_32 (output_bfd
, nop
, entry
+8); /* nop */
928 bfd_put_32 (output_bfd
, ldx
, entry
+12); /* ldx [%o7+P],%g1 */
929 bfd_put_32 (output_bfd
, 0x83c3c001, entry
+16); /* jmpl %o7+%g1,%g1 */
930 bfd_put_32 (output_bfd
, 0x9e100005, entry
+20); /* mov %g5,%o7 */
932 bfd_put_64 (output_bfd
, contents
- (entry
+4), ptr
);
937 /* Return the offset of a particular plt entry within the .plt section. */
940 sparc64_elf_plt_entry_offset (index
)
945 if (index
< LARGE_PLT_THRESHOLD
)
946 return index
* PLT_ENTRY_SIZE
;
948 /* See above for details. */
950 block
= (index
- LARGE_PLT_THRESHOLD
) / 160;
951 ofs
= (index
- LARGE_PLT_THRESHOLD
) % 160;
953 return ((bfd_vma
) (LARGE_PLT_THRESHOLD
+ block
*160) * PLT_ENTRY_SIZE
958 sparc64_elf_plt_ptr_offset (index
, max
)
961 int block
, ofs
, last
;
963 BFD_ASSERT(index
>= LARGE_PLT_THRESHOLD
);
965 /* See above for details. */
967 block
= (((index
- LARGE_PLT_THRESHOLD
) / 160) * 160)
968 + LARGE_PLT_THRESHOLD
;
970 if (block
+ 160 > max
)
971 last
= (max
- LARGE_PLT_THRESHOLD
) % 160;
975 return (block
* PLT_ENTRY_SIZE
980 /* Look through the relocs for a section during the first phase, and
981 allocate space in the global offset table or procedure linkage
985 sparc64_elf_check_relocs (abfd
, info
, sec
, relocs
)
987 struct bfd_link_info
*info
;
989 const Elf_Internal_Rela
*relocs
;
992 Elf_Internal_Shdr
*symtab_hdr
;
993 struct elf_link_hash_entry
**sym_hashes
;
994 bfd_vma
*local_got_offsets
;
995 const Elf_Internal_Rela
*rel
;
996 const Elf_Internal_Rela
*rel_end
;
1001 if (info
->relocateable
|| !(sec
->flags
& SEC_ALLOC
))
1004 dynobj
= elf_hash_table (info
)->dynobj
;
1005 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1006 sym_hashes
= elf_sym_hashes (abfd
);
1007 local_got_offsets
= elf_local_got_offsets (abfd
);
1013 rel_end
= relocs
+ NUM_SHDR_ENTRIES (& elf_section_data (sec
)->rel_hdr
);
1014 for (rel
= relocs
; rel
< rel_end
; rel
++)
1016 unsigned long r_symndx
;
1017 struct elf_link_hash_entry
*h
;
1019 r_symndx
= ELF64_R_SYM (rel
->r_info
);
1020 if (r_symndx
< symtab_hdr
->sh_info
)
1023 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1025 switch (ELF64_R_TYPE_ID (rel
->r_info
))
1030 /* This symbol requires a global offset table entry. */
1034 /* Create the .got section. */
1035 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
1036 if (! _bfd_elf_create_got_section (dynobj
, info
))
1042 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1043 BFD_ASSERT (sgot
!= NULL
);
1046 if (srelgot
== NULL
&& (h
!= NULL
|| info
->shared
))
1048 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1049 if (srelgot
== NULL
)
1051 srelgot
= bfd_make_section (dynobj
, ".rela.got");
1053 || ! bfd_set_section_flags (dynobj
, srelgot
,
1058 | SEC_LINKER_CREATED
1060 || ! bfd_set_section_alignment (dynobj
, srelgot
, 3))
1067 if (h
->got
.offset
!= (bfd_vma
) -1)
1069 /* We have already allocated space in the .got. */
1072 h
->got
.offset
= sgot
->_raw_size
;
1074 /* Make sure this symbol is output as a dynamic symbol. */
1075 if (h
->dynindx
== -1)
1077 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
1081 srelgot
->_raw_size
+= sizeof (Elf64_External_Rela
);
1085 /* This is a global offset table entry for a local
1087 if (local_got_offsets
== NULL
)
1090 register unsigned int i
;
1092 size
= symtab_hdr
->sh_info
* sizeof (bfd_vma
);
1093 local_got_offsets
= (bfd_vma
*) bfd_alloc (abfd
, size
);
1094 if (local_got_offsets
== NULL
)
1096 elf_local_got_offsets (abfd
) = local_got_offsets
;
1097 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
1098 local_got_offsets
[i
] = (bfd_vma
) -1;
1100 if (local_got_offsets
[r_symndx
] != (bfd_vma
) -1)
1102 /* We have already allocated space in the .got. */
1105 local_got_offsets
[r_symndx
] = sgot
->_raw_size
;
1109 /* If we are generating a shared object, we need to
1110 output a R_SPARC_RELATIVE reloc so that the
1111 dynamic linker can adjust this GOT entry. */
1112 srelgot
->_raw_size
+= sizeof (Elf64_External_Rela
);
1116 sgot
->_raw_size
+= 8;
1119 /* Doesn't work for 64-bit -fPIC, since sethi/or builds
1120 unsigned numbers. If we permit ourselves to modify
1121 code so we get sethi/xor, this could work.
1122 Question: do we consider conditionally re-enabling
1123 this for -fpic, once we know about object code models? */
1124 /* If the .got section is more than 0x1000 bytes, we add
1125 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1126 bit relocations have a greater chance of working. */
1127 if (sgot
->_raw_size
>= 0x1000
1128 && elf_hash_table (info
)->hgot
->root
.u
.def
.value
== 0)
1129 elf_hash_table (info
)->hgot
->root
.u
.def
.value
= 0x1000;
1134 case R_SPARC_WPLT30
:
1136 case R_SPARC_HIPLT22
:
1137 case R_SPARC_LOPLT10
:
1138 case R_SPARC_PCPLT32
:
1139 case R_SPARC_PCPLT22
:
1140 case R_SPARC_PCPLT10
:
1142 /* This symbol requires a procedure linkage table entry. We
1143 actually build the entry in adjust_dynamic_symbol,
1144 because this might be a case of linking PIC code without
1145 linking in any dynamic objects, in which case we don't
1146 need to generate a procedure linkage table after all. */
1150 /* It does not make sense to have a procedure linkage
1151 table entry for a local symbol. */
1152 bfd_set_error (bfd_error_bad_value
);
1156 /* Make sure this symbol is output as a dynamic symbol. */
1157 if (h
->dynindx
== -1)
1159 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
1163 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
1168 case R_SPARC_PC_HH22
:
1169 case R_SPARC_PC_HM10
:
1170 case R_SPARC_PC_LM22
:
1172 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1176 case R_SPARC_DISP16
:
1177 case R_SPARC_DISP32
:
1178 case R_SPARC_DISP64
:
1179 case R_SPARC_WDISP30
:
1180 case R_SPARC_WDISP22
:
1181 case R_SPARC_WDISP19
:
1182 case R_SPARC_WDISP16
:
1211 /* When creating a shared object, we must copy these relocs
1212 into the output file. We create a reloc section in
1213 dynobj and make room for the reloc.
1215 But don't do this for debugging sections -- this shows up
1216 with DWARF2 -- first because they are not loaded, and
1217 second because DWARF sez the debug info is not to be
1218 biased by the load address. */
1219 if (info
->shared
&& (sec
->flags
& SEC_ALLOC
))
1225 name
= (bfd_elf_string_from_elf_section
1227 elf_elfheader (abfd
)->e_shstrndx
,
1228 elf_section_data (sec
)->rel_hdr
.sh_name
));
1232 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1233 && strcmp (bfd_get_section_name (abfd
, sec
),
1236 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1241 sreloc
= bfd_make_section (dynobj
, name
);
1242 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
1243 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1244 if ((sec
->flags
& SEC_ALLOC
) != 0)
1245 flags
|= SEC_ALLOC
| SEC_LOAD
;
1247 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
1248 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
1253 sreloc
->_raw_size
+= sizeof (Elf64_External_Rela
);
1257 case R_SPARC_REGISTER
:
1258 /* Nothing to do. */
1262 (*_bfd_error_handler
) (_("%s: check_relocs: unhandled reloc type %d"),
1263 bfd_get_filename(abfd
),
1264 ELF64_R_TYPE_ID (rel
->r_info
));
1272 /* Hook called by the linker routine which adds symbols from an object
1273 file. We use it for STT_REGISTER symbols. */
1276 sparc64_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
)
1278 struct bfd_link_info
*info
;
1279 const Elf_Internal_Sym
*sym
;
1281 flagword
*flagsp ATTRIBUTE_UNUSED
;
1282 asection
**secp ATTRIBUTE_UNUSED
;
1283 bfd_vma
*valp ATTRIBUTE_UNUSED
;
1285 static char *stt_types
[] = { "NOTYPE", "OBJECT", "FUNCTION" };
1287 if (ELF_ST_TYPE (sym
->st_info
) == STT_REGISTER
)
1290 struct sparc64_elf_app_reg
*p
;
1292 reg
= (int)sym
->st_value
;
1295 case 2: reg
-= 2; break;
1296 case 6: reg
-= 4; break;
1298 (*_bfd_error_handler
)
1299 (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"),
1300 bfd_get_filename (abfd
));
1304 if (info
->hash
->creator
!= abfd
->xvec
1305 || (abfd
->flags
& DYNAMIC
) != 0)
1307 /* STT_REGISTER only works when linking an elf64_sparc object.
1308 If STT_REGISTER comes from a dynamic object, don't put it into
1309 the output bfd. The dynamic linker will recheck it. */
1314 p
= sparc64_elf_hash_table(info
)->app_regs
+ reg
;
1316 if (p
->name
!= NULL
&& strcmp (p
->name
, *namep
))
1318 (*_bfd_error_handler
)
1319 (_("Register %%g%d used incompatibly: "
1320 "previously declared in %s to %s, in %s redefined to %s"),
1322 bfd_get_filename (p
->abfd
), *p
->name
? p
->name
: "#scratch",
1323 bfd_get_filename (abfd
), **namep
? *namep
: "#scratch");
1327 if (p
->name
== NULL
)
1331 struct elf_link_hash_entry
*h
;
1333 h
= (struct elf_link_hash_entry
*)
1334 bfd_link_hash_lookup (info
->hash
, *namep
, false, false, false);
1338 unsigned char type
= h
->type
;
1340 if (type
> STT_FUNC
) type
= 0;
1341 (*_bfd_error_handler
)
1342 (_("Symbol `%s' has differing types: "
1343 "previously %s, REGISTER in %s"),
1344 *namep
, stt_types
[type
], bfd_get_filename (abfd
));
1348 p
->name
= bfd_hash_allocate (&info
->hash
->table
,
1349 strlen (*namep
) + 1);
1353 strcpy (p
->name
, *namep
);
1357 p
->bind
= ELF_ST_BIND (sym
->st_info
);
1359 p
->shndx
= sym
->st_shndx
;
1363 if (p
->bind
== STB_WEAK
1364 && ELF_ST_BIND (sym
->st_info
) == STB_GLOBAL
)
1366 p
->bind
= STB_GLOBAL
;
1373 else if (! *namep
|| ! **namep
)
1378 struct sparc64_elf_app_reg
*p
;
1380 p
= sparc64_elf_hash_table(info
)->app_regs
;
1381 for (i
= 0; i
< 4; i
++, p
++)
1382 if (p
->name
!= NULL
&& ! strcmp (p
->name
, *namep
))
1384 unsigned char type
= ELF_ST_TYPE (sym
->st_info
);
1386 if (type
> STT_FUNC
) type
= 0;
1387 (*_bfd_error_handler
)
1388 (_("Symbol `%s' has differing types: "
1389 "REGISTER in %s, %s in %s"),
1390 *namep
, bfd_get_filename (p
->abfd
), stt_types
[type
],
1391 bfd_get_filename (abfd
));
1398 /* This function takes care of emiting STT_REGISTER symbols
1399 which we cannot easily keep in the symbol hash table. */
1402 sparc64_elf_output_arch_syms (output_bfd
, info
, finfo
, func
)
1403 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1404 struct bfd_link_info
*info
;
1406 boolean (*func
) PARAMS ((PTR
, const char *,
1407 Elf_Internal_Sym
*, asection
*));
1410 struct sparc64_elf_app_reg
*app_regs
=
1411 sparc64_elf_hash_table(info
)->app_regs
;
1412 Elf_Internal_Sym sym
;
1414 /* We arranged in size_dynamic_sections to put the STT_REGISTER entries
1415 at the end of the dynlocal list, so they came at the end of the local
1416 symbols in the symtab. Except that they aren't STB_LOCAL, so we need
1417 to back up symtab->sh_info. */
1418 if (elf_hash_table (info
)->dynlocal
)
1420 bfd
* dynobj
= elf_hash_table (info
)->dynobj
;
1421 asection
*dynsymsec
= bfd_get_section_by_name (dynobj
, ".dynsym");
1422 struct elf_link_local_dynamic_entry
*e
;
1424 for (e
= elf_hash_table (info
)->dynlocal
; e
; e
= e
->next
)
1425 if (e
->input_indx
== -1)
1429 elf_section_data (dynsymsec
->output_section
)->this_hdr
.sh_info
1434 if (info
->strip
== strip_all
)
1437 for (reg
= 0; reg
< 4; reg
++)
1438 if (app_regs
[reg
].name
!= NULL
)
1440 if (info
->strip
== strip_some
1441 && bfd_hash_lookup (info
->keep_hash
,
1442 app_regs
[reg
].name
,
1443 false, false) == NULL
)
1446 sym
.st_value
= reg
< 2 ? reg
+ 2 : reg
+ 4;
1449 sym
.st_info
= ELF_ST_INFO (app_regs
[reg
].bind
, STT_REGISTER
);
1450 sym
.st_shndx
= app_regs
[reg
].shndx
;
1451 if (! (*func
) (finfo
, app_regs
[reg
].name
, &sym
,
1452 sym
.st_shndx
== SHN_ABS
1453 ? bfd_abs_section_ptr
: bfd_und_section_ptr
))
1461 sparc64_elf_get_symbol_type (elf_sym
, type
)
1462 Elf_Internal_Sym
* elf_sym
;
1465 if (ELF_ST_TYPE (elf_sym
->st_info
) == STT_REGISTER
)
1466 return STT_REGISTER
;
1471 /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL
1472 even in SHN_UNDEF section. */
1475 sparc64_elf_symbol_processing (abfd
, asym
)
1476 bfd
*abfd ATTRIBUTE_UNUSED
;
1479 elf_symbol_type
*elfsym
;
1481 elfsym
= (elf_symbol_type
*) asym
;
1482 if (elfsym
->internal_elf_sym
.st_info
1483 == ELF_ST_INFO (STB_GLOBAL
, STT_REGISTER
))
1485 asym
->flags
|= BSF_GLOBAL
;
1489 /* Adjust a symbol defined by a dynamic object and referenced by a
1490 regular object. The current definition is in some section of the
1491 dynamic object, but we're not including those sections. We have to
1492 change the definition to something the rest of the link can
1496 sparc64_elf_adjust_dynamic_symbol (info
, h
)
1497 struct bfd_link_info
*info
;
1498 struct elf_link_hash_entry
*h
;
1502 unsigned int power_of_two
;
1504 dynobj
= elf_hash_table (info
)->dynobj
;
1506 /* Make sure we know what is going on here. */
1507 BFD_ASSERT (dynobj
!= NULL
1508 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
1509 || h
->weakdef
!= NULL
1510 || ((h
->elf_link_hash_flags
1511 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
1512 && (h
->elf_link_hash_flags
1513 & ELF_LINK_HASH_REF_REGULAR
) != 0
1514 && (h
->elf_link_hash_flags
1515 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
1517 /* If this is a function, put it in the procedure linkage table. We
1518 will fill in the contents of the procedure linkage table later
1519 (although we could actually do it here). The STT_NOTYPE
1520 condition is a hack specifically for the Oracle libraries
1521 delivered for Solaris; for some inexplicable reason, they define
1522 some of their functions as STT_NOTYPE when they really should be
1524 if (h
->type
== STT_FUNC
1525 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0
1526 || (h
->type
== STT_NOTYPE
1527 && (h
->root
.type
== bfd_link_hash_defined
1528 || h
->root
.type
== bfd_link_hash_defweak
)
1529 && (h
->root
.u
.def
.section
->flags
& SEC_CODE
) != 0))
1531 if (! elf_hash_table (info
)->dynamic_sections_created
)
1533 /* This case can occur if we saw a WPLT30 reloc in an input
1534 file, but none of the input files were dynamic objects.
1535 In such a case, we don't actually need to build a
1536 procedure linkage table, and we can just do a WDISP30
1538 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
1542 s
= bfd_get_section_by_name (dynobj
, ".plt");
1543 BFD_ASSERT (s
!= NULL
);
1545 /* The first four bit in .plt is reserved. */
1546 if (s
->_raw_size
== 0)
1547 s
->_raw_size
= PLT_HEADER_SIZE
;
1549 /* If this symbol is not defined in a regular file, and we are
1550 not generating a shared library, then set the symbol to this
1551 location in the .plt. This is required to make function
1552 pointers compare as equal between the normal executable and
1553 the shared library. */
1555 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1557 h
->root
.u
.def
.section
= s
;
1558 h
->root
.u
.def
.value
= s
->_raw_size
;
1561 /* To simplify matters later, just store the plt index here. */
1562 h
->plt
.offset
= s
->_raw_size
/ PLT_ENTRY_SIZE
;
1564 /* Make room for this entry. */
1565 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1567 /* We also need to make an entry in the .rela.plt section. */
1569 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1570 BFD_ASSERT (s
!= NULL
);
1572 s
->_raw_size
+= sizeof (Elf64_External_Rela
);
1574 /* The procedure linkage table size is bounded by the magnitude
1575 of the offset we can describe in the entry. */
1576 if (s
->_raw_size
>= (bfd_vma
)1 << 32)
1578 bfd_set_error (bfd_error_bad_value
);
1585 /* If this is a weak symbol, and there is a real definition, the
1586 processor independent code will have arranged for us to see the
1587 real definition first, and we can just use the same value. */
1588 if (h
->weakdef
!= NULL
)
1590 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1591 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1592 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1593 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1597 /* This is a reference to a symbol defined by a dynamic object which
1598 is not a function. */
1600 /* If we are creating a shared library, we must presume that the
1601 only references to the symbol are via the global offset table.
1602 For such cases we need not do anything here; the relocations will
1603 be handled correctly by relocate_section. */
1607 /* We must allocate the symbol in our .dynbss section, which will
1608 become part of the .bss section of the executable. There will be
1609 an entry for this symbol in the .dynsym section. The dynamic
1610 object will contain position independent code, so all references
1611 from the dynamic object to this symbol will go through the global
1612 offset table. The dynamic linker will use the .dynsym entry to
1613 determine the address it must put in the global offset table, so
1614 both the dynamic object and the regular object will refer to the
1615 same memory location for the variable. */
1617 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1618 BFD_ASSERT (s
!= NULL
);
1620 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1621 to copy the initial value out of the dynamic object and into the
1622 runtime process image. We need to remember the offset into the
1623 .rel.bss section we are going to use. */
1624 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1628 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1629 BFD_ASSERT (srel
!= NULL
);
1630 srel
->_raw_size
+= sizeof (Elf64_External_Rela
);
1631 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1634 /* We need to figure out the alignment required for this symbol. I
1635 have no idea how ELF linkers handle this. 16-bytes is the size
1636 of the largest type that requires hard alignment -- long double. */
1637 power_of_two
= bfd_log2 (h
->size
);
1638 if (power_of_two
> 4)
1641 /* Apply the required alignment. */
1642 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1643 (bfd_size_type
) (1 << power_of_two
));
1644 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1646 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1650 /* Define the symbol as being at this point in the section. */
1651 h
->root
.u
.def
.section
= s
;
1652 h
->root
.u
.def
.value
= s
->_raw_size
;
1654 /* Increment the section size to make room for the symbol. */
1655 s
->_raw_size
+= h
->size
;
1660 /* Set the sizes of the dynamic sections. */
1663 sparc64_elf_size_dynamic_sections (output_bfd
, info
)
1665 struct bfd_link_info
*info
;
1672 dynobj
= elf_hash_table (info
)->dynobj
;
1673 BFD_ASSERT (dynobj
!= NULL
);
1675 if (elf_hash_table (info
)->dynamic_sections_created
)
1677 /* Set the contents of the .interp section to the interpreter. */
1680 s
= bfd_get_section_by_name (dynobj
, ".interp");
1681 BFD_ASSERT (s
!= NULL
);
1682 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1683 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1688 /* We may have created entries in the .rela.got section.
1689 However, if we are not creating the dynamic sections, we will
1690 not actually use these entries. Reset the size of .rela.got,
1691 which will cause it to get stripped from the output file
1693 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1698 /* The check_relocs and adjust_dynamic_symbol entry points have
1699 determined the sizes of the various dynamic sections. Allocate
1703 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1708 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1711 /* It's OK to base decisions on the section name, because none
1712 of the dynobj section names depend upon the input files. */
1713 name
= bfd_get_section_name (dynobj
, s
);
1717 if (strncmp (name
, ".rela", 5) == 0)
1719 if (s
->_raw_size
== 0)
1721 /* If we don't need this section, strip it from the
1722 output file. This is to handle .rela.bss and
1723 .rel.plt. We must create it in
1724 create_dynamic_sections, because it must be created
1725 before the linker maps input sections to output
1726 sections. The linker does that before
1727 adjust_dynamic_symbol is called, and it is that
1728 function which decides whether anything needs to go
1729 into these sections. */
1734 const char *outname
;
1737 /* If this relocation section applies to a read only
1738 section, then we probably need a DT_TEXTREL entry. */
1739 outname
= bfd_get_section_name (output_bfd
,
1741 target
= bfd_get_section_by_name (output_bfd
, outname
+ 5);
1743 && (target
->flags
& SEC_READONLY
) != 0)
1746 if (strcmp (name
, ".rela.plt") == 0)
1749 /* We use the reloc_count field as a counter if we need
1750 to copy relocs into the output file. */
1754 else if (strcmp (name
, ".plt") != 0
1755 && strncmp (name
, ".got", 4) != 0)
1757 /* It's not one of our sections, so don't allocate space. */
1763 _bfd_strip_section_from_output (info
, s
);
1767 /* Allocate memory for the section contents. Zero the memory
1768 for the benefit of .rela.plt, which has 4 unused entries
1769 at the beginning, and we don't want garbage. */
1770 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1771 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1775 if (elf_hash_table (info
)->dynamic_sections_created
)
1777 /* Add some entries to the .dynamic section. We fill in the
1778 values later, in sparc64_elf_finish_dynamic_sections, but we
1779 must add the entries now so that we get the correct size for
1780 the .dynamic section. The DT_DEBUG entry is filled in by the
1781 dynamic linker and used by the debugger. */
1783 struct sparc64_elf_app_reg
* app_regs
;
1784 struct bfd_strtab_hash
*dynstr
;
1785 struct elf_link_hash_table
*eht
= elf_hash_table (info
);
1789 if (! bfd_elf64_add_dynamic_entry (info
, DT_DEBUG
, 0))
1795 if (! bfd_elf64_add_dynamic_entry (info
, DT_PLTGOT
, 0)
1796 || ! bfd_elf64_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
1797 || ! bfd_elf64_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
1798 || ! bfd_elf64_add_dynamic_entry (info
, DT_JMPREL
, 0))
1802 if (! bfd_elf64_add_dynamic_entry (info
, DT_RELA
, 0)
1803 || ! bfd_elf64_add_dynamic_entry (info
, DT_RELASZ
, 0)
1804 || ! bfd_elf64_add_dynamic_entry (info
, DT_RELAENT
,
1805 sizeof (Elf64_External_Rela
)))
1810 if (! bfd_elf64_add_dynamic_entry (info
, DT_TEXTREL
, 0))
1812 info
->flags
|= DF_TEXTREL
;
1815 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
1816 entries if needed. */
1817 app_regs
= sparc64_elf_hash_table (info
)->app_regs
;
1818 dynstr
= eht
->dynstr
;
1820 for (reg
= 0; reg
< 4; reg
++)
1821 if (app_regs
[reg
].name
!= NULL
)
1823 struct elf_link_local_dynamic_entry
*entry
, *e
;
1825 if (! bfd_elf64_add_dynamic_entry (info
, DT_SPARC_REGISTER
, 0))
1828 entry
= (struct elf_link_local_dynamic_entry
*)
1829 bfd_hash_allocate (&info
->hash
->table
, sizeof (*entry
));
1833 /* We cheat here a little bit: the symbol will not be local, so we
1834 put it at the end of the dynlocal linked list. We will fix it
1835 later on, as we have to fix other fields anyway. */
1836 entry
->isym
.st_value
= reg
< 2 ? reg
+ 2 : reg
+ 4;
1837 entry
->isym
.st_size
= 0;
1838 if (*app_regs
[reg
].name
!= '\0')
1840 = _bfd_stringtab_add (dynstr
, app_regs
[reg
].name
, true, false);
1842 entry
->isym
.st_name
= 0;
1843 entry
->isym
.st_other
= 0;
1844 entry
->isym
.st_info
= ELF_ST_INFO (app_regs
[reg
].bind
,
1846 entry
->isym
.st_shndx
= app_regs
[reg
].shndx
;
1848 entry
->input_bfd
= output_bfd
;
1849 entry
->input_indx
= -1;
1851 if (eht
->dynlocal
== NULL
)
1852 eht
->dynlocal
= entry
;
1855 for (e
= eht
->dynlocal
; e
->next
; e
= e
->next
)
1866 #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0)
1867 #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1)
1870 sparc64_elf_relax_section (abfd
, section
, link_info
, again
)
1871 bfd
*abfd ATTRIBUTE_UNUSED
;
1872 asection
*section ATTRIBUTE_UNUSED
;
1873 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
1877 SET_SEC_DO_RELAX (section
);
1881 /* Relocate a SPARC64 ELF section. */
1884 sparc64_elf_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1885 contents
, relocs
, local_syms
, local_sections
)
1887 struct bfd_link_info
*info
;
1889 asection
*input_section
;
1891 Elf_Internal_Rela
*relocs
;
1892 Elf_Internal_Sym
*local_syms
;
1893 asection
**local_sections
;
1896 Elf_Internal_Shdr
*symtab_hdr
;
1897 struct elf_link_hash_entry
**sym_hashes
;
1898 bfd_vma
*local_got_offsets
;
1903 Elf_Internal_Rela
*rel
;
1904 Elf_Internal_Rela
*relend
;
1906 dynobj
= elf_hash_table (info
)->dynobj
;
1907 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1908 sym_hashes
= elf_sym_hashes (input_bfd
);
1909 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1911 if (elf_hash_table(info
)->hgot
== NULL
)
1914 got_base
= elf_hash_table (info
)->hgot
->root
.u
.def
.value
;
1916 sgot
= splt
= sreloc
= NULL
;
1919 relend
= relocs
+ NUM_SHDR_ENTRIES (& elf_section_data (input_section
)->rel_hdr
);
1920 for (; rel
< relend
; rel
++)
1923 reloc_howto_type
*howto
;
1924 unsigned long r_symndx
;
1925 struct elf_link_hash_entry
*h
;
1926 Elf_Internal_Sym
*sym
;
1929 bfd_reloc_status_type r
;
1931 r_type
= ELF64_R_TYPE_ID (rel
->r_info
);
1932 if (r_type
< 0 || r_type
>= (int) R_SPARC_max_std
)
1934 bfd_set_error (bfd_error_bad_value
);
1937 howto
= sparc64_elf_howto_table
+ r_type
;
1939 r_symndx
= ELF64_R_SYM (rel
->r_info
);
1941 if (info
->relocateable
)
1943 /* This is a relocateable link. We don't have to change
1944 anything, unless the reloc is against a section symbol,
1945 in which case we have to adjust according to where the
1946 section symbol winds up in the output section. */
1947 if (r_symndx
< symtab_hdr
->sh_info
)
1949 sym
= local_syms
+ r_symndx
;
1950 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
1952 sec
= local_sections
[r_symndx
];
1953 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
1960 /* This is a final link. */
1964 if (r_symndx
< symtab_hdr
->sh_info
)
1966 sym
= local_syms
+ r_symndx
;
1967 sec
= local_sections
[r_symndx
];
1968 relocation
= (sec
->output_section
->vma
1969 + sec
->output_offset
1974 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1975 while (h
->root
.type
== bfd_link_hash_indirect
1976 || h
->root
.type
== bfd_link_hash_warning
)
1977 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1978 if (h
->root
.type
== bfd_link_hash_defined
1979 || h
->root
.type
== bfd_link_hash_defweak
)
1981 boolean skip_it
= false;
1982 sec
= h
->root
.u
.def
.section
;
1986 case R_SPARC_WPLT30
:
1988 case R_SPARC_HIPLT22
:
1989 case R_SPARC_LOPLT10
:
1990 case R_SPARC_PCPLT32
:
1991 case R_SPARC_PCPLT22
:
1992 case R_SPARC_PCPLT10
:
1994 if (h
->plt
.offset
!= (bfd_vma
) -1)
2001 if (elf_hash_table(info
)->dynamic_sections_created
2003 || (!info
->symbolic
&& h
->dynindx
!= -1)
2004 || !(h
->elf_link_hash_flags
2005 & ELF_LINK_HASH_DEF_REGULAR
)))
2011 case R_SPARC_PC_HH22
:
2012 case R_SPARC_PC_HM10
:
2013 case R_SPARC_PC_LM22
:
2014 if (!strcmp(h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_"))
2022 case R_SPARC_DISP16
:
2023 case R_SPARC_DISP32
:
2024 case R_SPARC_WDISP30
:
2025 case R_SPARC_WDISP22
:
2038 case R_SPARC_WDISP19
:
2039 case R_SPARC_WDISP16
:
2043 case R_SPARC_DISP64
:
2052 && ((!info
->symbolic
&& h
->dynindx
!= -1)
2053 || !(h
->elf_link_hash_flags
2054 & ELF_LINK_HASH_DEF_REGULAR
)))
2061 /* In these cases, we don't need the relocation
2062 value. We check specially because in some
2063 obscure cases sec->output_section will be NULL. */
2068 relocation
= (h
->root
.u
.def
.value
2069 + sec
->output_section
->vma
2070 + sec
->output_offset
);
2073 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2075 else if (info
->shared
&& !info
->symbolic
2076 && !info
->no_undefined
2077 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2081 if (! ((*info
->callbacks
->undefined_symbol
)
2082 (info
, h
->root
.root
.string
, input_bfd
,
2083 input_section
, rel
->r_offset
,
2084 (!info
->shared
|| info
->no_undefined
2085 || ELF_ST_VISIBILITY (h
->other
)))))
2088 /* To avoid generating warning messages about truncated
2089 relocations, set the relocation's address to be the same as
2090 the start of this section. */
2092 if (input_section
->output_section
!= NULL
)
2093 relocation
= input_section
->output_section
->vma
;
2099 /* When generating a shared object, these relocations are copied
2100 into the output file to be resolved at run time. */
2101 if (info
->shared
&& (input_section
->flags
& SEC_ALLOC
))
2107 case R_SPARC_PC_HH22
:
2108 case R_SPARC_PC_HM10
:
2109 case R_SPARC_PC_LM22
:
2111 && !strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_"))
2115 case R_SPARC_DISP16
:
2116 case R_SPARC_DISP32
:
2117 case R_SPARC_WDISP30
:
2118 case R_SPARC_WDISP22
:
2119 case R_SPARC_WDISP19
:
2120 case R_SPARC_WDISP16
:
2121 case R_SPARC_DISP64
:
2151 Elf_Internal_Rela outrel
;
2157 (bfd_elf_string_from_elf_section
2159 elf_elfheader (input_bfd
)->e_shstrndx
,
2160 elf_section_data (input_section
)->rel_hdr
.sh_name
));
2165 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
2166 && strcmp (bfd_get_section_name(input_bfd
,
2170 sreloc
= bfd_get_section_by_name (dynobj
, name
);
2171 BFD_ASSERT (sreloc
!= NULL
);
2176 if (elf_section_data (input_section
)->stab_info
== NULL
)
2177 outrel
.r_offset
= rel
->r_offset
;
2182 off
= (_bfd_stab_section_offset
2183 (output_bfd
, &elf_hash_table (info
)->stab_info
,
2185 &elf_section_data (input_section
)->stab_info
,
2187 if (off
== MINUS_ONE
)
2189 outrel
.r_offset
= off
;
2192 outrel
.r_offset
+= (input_section
->output_section
->vma
2193 + input_section
->output_offset
);
2195 /* Optimize unaligned reloc usage now that we know where
2196 it finally resides. */
2200 if (outrel
.r_offset
& 1) r_type
= R_SPARC_UA16
;
2203 if (!(outrel
.r_offset
& 1)) r_type
= R_SPARC_16
;
2206 if (outrel
.r_offset
& 3) r_type
= R_SPARC_UA32
;
2209 if (!(outrel
.r_offset
& 3)) r_type
= R_SPARC_32
;
2212 if (outrel
.r_offset
& 7) r_type
= R_SPARC_UA64
;
2215 if (!(outrel
.r_offset
& 7)) r_type
= R_SPARC_64
;
2220 memset (&outrel
, 0, sizeof outrel
);
2221 /* h->dynindx may be -1 if the symbol was marked to
2224 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2225 || (h
->elf_link_hash_flags
2226 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
2228 BFD_ASSERT (h
->dynindx
!= -1);
2230 = ELF64_R_INFO (h
->dynindx
,
2232 ELF64_R_TYPE_DATA (rel
->r_info
),
2234 outrel
.r_addend
= rel
->r_addend
;
2238 if (r_type
== R_SPARC_64
)
2240 outrel
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2241 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2248 sec
= local_sections
[r_symndx
];
2251 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2253 == bfd_link_hash_defweak
));
2254 sec
= h
->root
.u
.def
.section
;
2256 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
2258 else if (sec
== NULL
|| sec
->owner
== NULL
)
2260 bfd_set_error (bfd_error_bad_value
);
2267 osec
= sec
->output_section
;
2268 indx
= elf_section_data (osec
)->dynindx
;
2270 /* FIXME: we really should be able to link non-pic
2271 shared libraries. */
2275 (*_bfd_error_handler
)
2276 (_("%s: probably compiled without -fPIC?"),
2277 bfd_get_filename (input_bfd
));
2278 bfd_set_error (bfd_error_bad_value
);
2284 = ELF64_R_INFO (indx
,
2286 ELF64_R_TYPE_DATA (rel
->r_info
),
2288 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2292 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
,
2293 (((Elf64_External_Rela
*)
2295 + sreloc
->reloc_count
));
2296 ++sreloc
->reloc_count
;
2298 /* This reloc will be computed at runtime, so there's no
2299 need to do anything now. */
2311 /* Relocation is to the entry for this symbol in the global
2315 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2316 BFD_ASSERT (sgot
!= NULL
);
2321 bfd_vma off
= h
->got
.offset
;
2322 BFD_ASSERT (off
!= (bfd_vma
) -1);
2324 if (! elf_hash_table (info
)->dynamic_sections_created
2326 && (info
->symbolic
|| h
->dynindx
== -1)
2327 && (h
->elf_link_hash_flags
2328 & ELF_LINK_HASH_DEF_REGULAR
)))
2330 /* This is actually a static link, or it is a -Bsymbolic
2331 link and the symbol is defined locally, or the symbol
2332 was forced to be local because of a version file. We
2333 must initialize this entry in the global offset table.
2334 Since the offset must always be a multiple of 8, we
2335 use the least significant bit to record whether we
2336 have initialized it already.
2338 When doing a dynamic link, we create a .rela.got
2339 relocation entry to initialize the value. This is
2340 done in the finish_dynamic_symbol routine. */
2346 bfd_put_64 (output_bfd
, relocation
,
2347 sgot
->contents
+ off
);
2351 relocation
= sgot
->output_offset
+ off
- got_base
;
2357 BFD_ASSERT (local_got_offsets
!= NULL
);
2358 off
= local_got_offsets
[r_symndx
];
2359 BFD_ASSERT (off
!= (bfd_vma
) -1);
2361 /* The offset must always be a multiple of 8. We use
2362 the least significant bit to record whether we have
2363 already processed this entry. */
2368 local_got_offsets
[r_symndx
] |= 1;
2373 Elf_Internal_Rela outrel
;
2375 /* The Solaris 2.7 64-bit linker adds the contents
2376 of the location to the value of the reloc.
2377 Note this is different behaviour to the
2378 32-bit linker, which both adds the contents
2379 and ignores the addend. So clear the location. */
2380 bfd_put_64 (output_bfd
, 0, sgot
->contents
+ off
);
2382 /* We need to generate a R_SPARC_RELATIVE reloc
2383 for the dynamic linker. */
2384 srelgot
= bfd_get_section_by_name(dynobj
, ".rela.got");
2385 BFD_ASSERT (srelgot
!= NULL
);
2387 outrel
.r_offset
= (sgot
->output_section
->vma
2388 + sgot
->output_offset
2390 outrel
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2391 outrel
.r_addend
= relocation
;
2392 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
,
2393 (((Elf64_External_Rela
*)
2395 + srelgot
->reloc_count
));
2396 ++srelgot
->reloc_count
;
2399 bfd_put_64 (output_bfd
, relocation
, sgot
->contents
+ off
);
2401 relocation
= sgot
->output_offset
+ off
- got_base
;
2405 case R_SPARC_WPLT30
:
2407 case R_SPARC_HIPLT22
:
2408 case R_SPARC_LOPLT10
:
2409 case R_SPARC_PCPLT32
:
2410 case R_SPARC_PCPLT22
:
2411 case R_SPARC_PCPLT10
:
2413 /* Relocation is to the entry for this symbol in the
2414 procedure linkage table. */
2415 BFD_ASSERT (h
!= NULL
);
2417 if (h
->plt
.offset
== (bfd_vma
) -1)
2419 /* We didn't make a PLT entry for this symbol. This
2420 happens when statically linking PIC code, or when
2421 using -Bsymbolic. */
2427 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2428 BFD_ASSERT (splt
!= NULL
);
2431 relocation
= (splt
->output_section
->vma
2432 + splt
->output_offset
2433 + sparc64_elf_plt_entry_offset (h
->plt
.offset
));
2434 if (r_type
== R_SPARC_WPLT30
)
2442 relocation
+= rel
->r_addend
;
2443 relocation
= (relocation
& 0x3ff) + ELF64_R_TYPE_DATA (rel
->r_info
);
2445 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2446 x
= (x
& ~0x1fff) | (relocation
& 0x1fff);
2447 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2449 r
= bfd_check_overflow (howto
->complain_on_overflow
,
2450 howto
->bitsize
, howto
->rightshift
,
2451 bfd_arch_bits_per_address (input_bfd
),
2456 case R_SPARC_WDISP16
:
2460 relocation
+= rel
->r_addend
;
2461 /* Adjust for pc-relative-ness. */
2462 relocation
-= (input_section
->output_section
->vma
2463 + input_section
->output_offset
);
2464 relocation
-= rel
->r_offset
;
2466 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2467 x
= (x
& ~0x303fff) | ((((relocation
>> 2) & 0xc000) << 6)
2468 | ((relocation
>> 2) & 0x3fff));
2469 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2471 r
= bfd_check_overflow (howto
->complain_on_overflow
,
2472 howto
->bitsize
, howto
->rightshift
,
2473 bfd_arch_bits_per_address (input_bfd
),
2482 relocation
+= rel
->r_addend
;
2483 relocation
= relocation
^ MINUS_ONE
;
2485 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2486 x
= (x
& ~0x3fffff) | ((relocation
>> 10) & 0x3fffff);
2487 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2489 r
= bfd_check_overflow (howto
->complain_on_overflow
,
2490 howto
->bitsize
, howto
->rightshift
,
2491 bfd_arch_bits_per_address (input_bfd
),
2500 relocation
+= rel
->r_addend
;
2501 relocation
= (relocation
& 0x3ff) | 0x1c00;
2503 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2504 x
= (x
& ~0x1fff) | relocation
;
2505 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2511 case R_SPARC_WDISP30
:
2513 if (SEC_DO_RELAX (input_section
)
2514 && rel
->r_offset
+ 4 < input_section
->_raw_size
)
2518 #define XCC (2 << 20)
2519 #define COND(x) (((x)&0xf)<<25)
2520 #define CONDA COND(0x8)
2521 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2522 #define INSN_BA (F2(0,2) | CONDA)
2523 #define INSN_OR F3(2, 0x2, 0)
2524 #define INSN_NOP F2(0,4)
2528 /* If the instruction is a call with either:
2530 arithmetic instruction with rd == %o7
2531 where rs1 != %o7 and rs2 if it is register != %o7
2532 then we can optimize if the call destination is near
2533 by changing the call into a branch always. */
2534 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2535 y
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2536 if ((x
& OP(~0)) == OP(1) && (y
& OP(~0)) == OP(2))
2538 if (((y
& OP3(~0)) == OP3(0x3d) /* restore */
2539 || ((y
& OP3(0x28)) == 0 /* arithmetic */
2540 && (y
& RD(~0)) == RD(O7
)))
2541 && (y
& RS1(~0)) != RS1(O7
)
2543 || (y
& RS2(~0)) != RS2(O7
)))
2547 reloc
= relocation
+ rel
->r_addend
- rel
->r_offset
;
2548 reloc
-= (input_section
->output_section
->vma
2549 + input_section
->output_offset
);
2553 /* Ensure the branch fits into simm22. */
2554 if ((reloc
& ~(bfd_vma
)0x7fffff)
2555 && ((reloc
| 0x7fffff) != MINUS_ONE
))
2559 /* Check whether it fits into simm19. */
2560 if ((reloc
& 0x3c0000) == 0
2561 || (reloc
& 0x3c0000) == 0x3c0000)
2562 x
= INSN_BPA
| (reloc
& 0x7ffff); /* ba,pt %xcc */
2564 x
= INSN_BA
| (reloc
& 0x3fffff); /* ba */
2565 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2567 if (rel
->r_offset
>= 4
2568 && (y
& (0xffffffff ^ RS1(~0)))
2569 == (INSN_OR
| RD(O7
) | RS2(G0
)))
2574 z
= bfd_get_32 (input_bfd
,
2575 contents
+ rel
->r_offset
- 4);
2576 if ((z
& (0xffffffff ^ RD(~0)))
2577 != (INSN_OR
| RS1(O7
) | RS2(G0
)))
2585 If call foo was replaced with ba, replace
2586 or %rN, %g0, %o7 with nop. */
2588 reg
= (y
& RS1(~0)) >> 14;
2589 if (reg
!= ((z
& RD(~0)) >> 25)
2590 || reg
== G0
|| reg
== O7
)
2593 bfd_put_32 (input_bfd
, INSN_NOP
,
2594 contents
+ rel
->r_offset
+ 4);
2604 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2605 contents
, rel
->r_offset
,
2606 relocation
, rel
->r_addend
);
2616 case bfd_reloc_outofrange
:
2619 case bfd_reloc_overflow
:
2625 if (h
->root
.type
== bfd_link_hash_undefweak
2626 && howto
->pc_relative
)
2628 /* Assume this is a call protected by other code that
2629 detect the symbol is undefined. If this is the case,
2630 we can safely ignore the overflow. If not, the
2631 program is hosed anyway, and a little warning isn't
2636 name
= h
->root
.root
.string
;
2640 name
= (bfd_elf_string_from_elf_section
2642 symtab_hdr
->sh_link
,
2647 name
= bfd_section_name (input_bfd
, sec
);
2649 if (! ((*info
->callbacks
->reloc_overflow
)
2650 (info
, name
, howto
->name
, (bfd_vma
) 0,
2651 input_bfd
, input_section
, rel
->r_offset
)))
2661 /* Finish up dynamic symbol handling. We set the contents of various
2662 dynamic sections here. */
2665 sparc64_elf_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
2667 struct bfd_link_info
*info
;
2668 struct elf_link_hash_entry
*h
;
2669 Elf_Internal_Sym
*sym
;
2673 dynobj
= elf_hash_table (info
)->dynobj
;
2675 if (h
->plt
.offset
!= (bfd_vma
) -1)
2679 Elf_Internal_Rela rela
;
2681 /* This symbol has an entry in the PLT. Set it up. */
2683 BFD_ASSERT (h
->dynindx
!= -1);
2685 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2686 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
2687 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
);
2689 /* Fill in the entry in the .rela.plt section. */
2691 if (h
->plt
.offset
< LARGE_PLT_THRESHOLD
)
2693 rela
.r_offset
= sparc64_elf_plt_entry_offset (h
->plt
.offset
);
2698 int max
= splt
->_raw_size
/ PLT_ENTRY_SIZE
;
2699 rela
.r_offset
= sparc64_elf_plt_ptr_offset (h
->plt
.offset
, max
);
2700 rela
.r_addend
= -(sparc64_elf_plt_entry_offset (h
->plt
.offset
) + 4)
2701 -(splt
->output_section
->vma
+ splt
->output_offset
);
2703 rela
.r_offset
+= (splt
->output_section
->vma
+ splt
->output_offset
);
2704 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_JMP_SLOT
);
2706 /* Adjust for the first 4 reserved elements in the .plt section
2707 when setting the offset in the .rela.plt section.
2708 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
2709 thus .plt[4] has corresponding .rela.plt[0] and so on. */
2711 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2712 ((Elf64_External_Rela
*) srela
->contents
2713 + (h
->plt
.offset
- 4)));
2715 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
2717 /* Mark the symbol as undefined, rather than as defined in
2718 the .plt section. Leave the value alone. */
2719 sym
->st_shndx
= SHN_UNDEF
;
2720 /* If the symbol is weak, we do need to clear the value.
2721 Otherwise, the PLT entry would provide a definition for
2722 the symbol even if the symbol wasn't defined anywhere,
2723 and so the symbol would never be NULL. */
2724 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR_NONWEAK
)
2730 if (h
->got
.offset
!= (bfd_vma
) -1)
2734 Elf_Internal_Rela rela
;
2736 /* This symbol has an entry in the GOT. Set it up. */
2738 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2739 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
2740 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
2742 rela
.r_offset
= (sgot
->output_section
->vma
2743 + sgot
->output_offset
2744 + (h
->got
.offset
&~ 1));
2746 /* If this is a -Bsymbolic link, and the symbol is defined
2747 locally, we just want to emit a RELATIVE reloc. Likewise if
2748 the symbol was forced to be local because of a version file.
2749 The entry in the global offset table will already have been
2750 initialized in the relocate_section function. */
2752 && (info
->symbolic
|| h
->dynindx
== -1)
2753 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
2755 asection
*sec
= h
->root
.u
.def
.section
;
2756 rela
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2757 rela
.r_addend
= (h
->root
.u
.def
.value
2758 + sec
->output_section
->vma
2759 + sec
->output_offset
);
2763 bfd_put_64 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
2764 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_GLOB_DAT
);
2768 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2769 ((Elf64_External_Rela
*) srela
->contents
2770 + srela
->reloc_count
));
2771 ++srela
->reloc_count
;
2774 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
2777 Elf_Internal_Rela rela
;
2779 /* This symbols needs a copy reloc. Set it up. */
2781 BFD_ASSERT (h
->dynindx
!= -1);
2783 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
2785 BFD_ASSERT (s
!= NULL
);
2787 rela
.r_offset
= (h
->root
.u
.def
.value
2788 + h
->root
.u
.def
.section
->output_section
->vma
2789 + h
->root
.u
.def
.section
->output_offset
);
2790 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_COPY
);
2792 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2793 ((Elf64_External_Rela
*) s
->contents
2798 /* Mark some specially defined symbols as absolute. */
2799 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
2800 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
2801 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2802 sym
->st_shndx
= SHN_ABS
;
2807 /* Finish up the dynamic sections. */
2810 sparc64_elf_finish_dynamic_sections (output_bfd
, info
)
2812 struct bfd_link_info
*info
;
2815 int stt_regidx
= -1;
2819 dynobj
= elf_hash_table (info
)->dynobj
;
2821 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2823 if (elf_hash_table (info
)->dynamic_sections_created
)
2826 Elf64_External_Dyn
*dyncon
, *dynconend
;
2828 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2829 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
2831 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
2832 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2833 for (; dyncon
< dynconend
; dyncon
++)
2835 Elf_Internal_Dyn dyn
;
2839 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2843 case DT_PLTGOT
: name
= ".plt"; size
= false; break;
2844 case DT_PLTRELSZ
: name
= ".rela.plt"; size
= true; break;
2845 case DT_JMPREL
: name
= ".rela.plt"; size
= false; break;
2846 case DT_SPARC_REGISTER
:
2847 if (stt_regidx
== -1)
2850 _bfd_elf_link_lookup_local_dynindx (info
, output_bfd
, -1);
2851 if (stt_regidx
== -1)
2854 dyn
.d_un
.d_val
= stt_regidx
++;
2855 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2857 default: name
= NULL
; size
= false; break;
2864 s
= bfd_get_section_by_name (output_bfd
, name
);
2870 dyn
.d_un
.d_ptr
= s
->vma
;
2873 if (s
->_cooked_size
!= 0)
2874 dyn
.d_un
.d_val
= s
->_cooked_size
;
2876 dyn
.d_un
.d_val
= s
->_raw_size
;
2879 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2883 /* Initialize the contents of the .plt section. */
2884 if (splt
->_raw_size
> 0)
2886 sparc64_elf_build_plt(output_bfd
, splt
->contents
,
2887 splt
->_raw_size
/ PLT_ENTRY_SIZE
);
2890 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
2894 /* Set the first entry in the global offset table to the address of
2895 the dynamic section. */
2896 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2897 BFD_ASSERT (sgot
!= NULL
);
2898 if (sgot
->_raw_size
> 0)
2901 bfd_put_64 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
2903 bfd_put_64 (output_bfd
,
2904 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2908 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
2913 /* Functions for dealing with the e_flags field. */
2915 /* Copy backend specific data from one object module to another */
2917 sparc64_elf_copy_private_bfd_data (ibfd
, obfd
)
2920 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2921 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2924 BFD_ASSERT (!elf_flags_init (obfd
)
2925 || (elf_elfheader (obfd
)->e_flags
2926 == elf_elfheader (ibfd
)->e_flags
));
2928 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
2929 elf_flags_init (obfd
) = true;
2933 /* Merge backend specific data from an object file to the output
2934 object file when linking. */
2937 sparc64_elf_merge_private_bfd_data (ibfd
, obfd
)
2942 flagword new_flags
, old_flags
;
2945 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2946 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2949 new_flags
= elf_elfheader (ibfd
)->e_flags
;
2950 old_flags
= elf_elfheader (obfd
)->e_flags
;
2952 if (!elf_flags_init (obfd
)) /* First call, no flags set */
2954 elf_flags_init (obfd
) = true;
2955 elf_elfheader (obfd
)->e_flags
= new_flags
;
2958 else if (new_flags
== old_flags
) /* Compatible flags are ok */
2961 else /* Incompatible flags */
2965 #define EF_SPARC_ISA_EXTENSIONS \
2966 (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1)
2968 if ((ibfd
->flags
& DYNAMIC
) != 0)
2970 /* We don't want dynamic objects memory ordering and
2971 architecture to have any role. That's what dynamic linker
2973 new_flags
&= ~(EF_SPARCV9_MM
| EF_SPARC_ISA_EXTENSIONS
);
2974 new_flags
|= (old_flags
2975 & (EF_SPARCV9_MM
| EF_SPARC_ISA_EXTENSIONS
));
2979 /* Choose the highest architecture requirements. */
2980 old_flags
|= (new_flags
& EF_SPARC_ISA_EXTENSIONS
);
2981 new_flags
|= (old_flags
& EF_SPARC_ISA_EXTENSIONS
);
2982 if ((old_flags
& (EF_SPARC_SUN_US1
| EF_SPARC_SUN_US3
))
2983 && (old_flags
& EF_SPARC_HAL_R1
))
2986 (*_bfd_error_handler
)
2987 (_("%s: linking UltraSPARC specific with HAL specific code"),
2988 bfd_get_filename (ibfd
));
2990 /* Choose the most restrictive memory ordering. */
2991 old_mm
= (old_flags
& EF_SPARCV9_MM
);
2992 new_mm
= (new_flags
& EF_SPARCV9_MM
);
2993 old_flags
&= ~EF_SPARCV9_MM
;
2994 new_flags
&= ~EF_SPARCV9_MM
;
2995 if (new_mm
< old_mm
)
2997 old_flags
|= old_mm
;
2998 new_flags
|= old_mm
;
3001 /* Warn about any other mismatches */
3002 if (new_flags
!= old_flags
)
3005 (*_bfd_error_handler
)
3006 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
3007 bfd_get_filename (ibfd
), (long)new_flags
, (long)old_flags
);
3010 elf_elfheader (obfd
)->e_flags
= old_flags
;
3014 bfd_set_error (bfd_error_bad_value
);
3021 /* Print a STT_REGISTER symbol to file FILE. */
3024 sparc64_elf_print_symbol_all (abfd
, filep
, symbol
)
3025 bfd
*abfd ATTRIBUTE_UNUSED
;
3029 FILE *file
= (FILE *) filep
;
3032 if (ELF_ST_TYPE (((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_info
)
3036 reg
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
;
3037 type
= symbol
->flags
;
3038 fprintf (file
, "REG_%c%c%11s%c%c R", "GOLI" [reg
/ 8], '0' + (reg
& 7), "",
3040 ? (type
& BSF_GLOBAL
) ? '!' : 'l'
3041 : (type
& BSF_GLOBAL
) ? 'g' : ' '),
3042 (type
& BSF_WEAK
) ? 'w' : ' ');
3043 if (symbol
->name
== NULL
|| symbol
->name
[0] == '\0')
3046 return symbol
->name
;
3049 /* Set the right machine number for a SPARC64 ELF file. */
3052 sparc64_elf_object_p (abfd
)
3055 unsigned long mach
= bfd_mach_sparc_v9
;
3057 if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US3
)
3058 mach
= bfd_mach_sparc_v9b
;
3059 else if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US1
)
3060 mach
= bfd_mach_sparc_v9a
;
3061 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
, mach
);
3064 /* Relocations in the 64 bit SPARC ELF ABI are more complex than in
3065 standard ELF, because R_SPARC_OLO10 has secondary addend in
3066 ELF64_R_TYPE_DATA field. This structure is used to redirect the
3067 relocation handling routines. */
3069 const struct elf_size_info sparc64_elf_size_info
=
3071 sizeof (Elf64_External_Ehdr
),
3072 sizeof (Elf64_External_Phdr
),
3073 sizeof (Elf64_External_Shdr
),
3074 sizeof (Elf64_External_Rel
),
3075 sizeof (Elf64_External_Rela
),
3076 sizeof (Elf64_External_Sym
),
3077 sizeof (Elf64_External_Dyn
),
3078 sizeof (Elf_External_Note
),
3079 4, /* hash-table entry size */
3080 /* internal relocations per external relocations.
3081 For link purposes we use just 1 internal per
3082 1 external, for assembly and slurp symbol table
3089 bfd_elf64_write_out_phdrs
,
3090 bfd_elf64_write_shdrs_and_ehdr
,
3091 sparc64_elf_write_relocs
,
3092 bfd_elf64_swap_symbol_out
,
3093 sparc64_elf_slurp_reloc_table
,
3094 bfd_elf64_slurp_symbol_table
,
3095 bfd_elf64_swap_dyn_in
,
3096 bfd_elf64_swap_dyn_out
,
3103 #define TARGET_BIG_SYM bfd_elf64_sparc_vec
3104 #define TARGET_BIG_NAME "elf64-sparc"
3105 #define ELF_ARCH bfd_arch_sparc
3106 #define ELF_MAXPAGESIZE 0x100000
3108 /* This is the official ABI value. */
3109 #define ELF_MACHINE_CODE EM_SPARCV9
3111 /* This is the value that we used before the ABI was released. */
3112 #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9
3114 #define bfd_elf64_bfd_link_hash_table_create \
3115 sparc64_elf_bfd_link_hash_table_create
3117 #define elf_info_to_howto \
3118 sparc64_elf_info_to_howto
3119 #define bfd_elf64_get_reloc_upper_bound \
3120 sparc64_elf_get_reloc_upper_bound
3121 #define bfd_elf64_get_dynamic_reloc_upper_bound \
3122 sparc64_elf_get_dynamic_reloc_upper_bound
3123 #define bfd_elf64_canonicalize_dynamic_reloc \
3124 sparc64_elf_canonicalize_dynamic_reloc
3125 #define bfd_elf64_bfd_reloc_type_lookup \
3126 sparc64_elf_reloc_type_lookup
3127 #define bfd_elf64_bfd_relax_section \
3128 sparc64_elf_relax_section
3130 #define elf_backend_create_dynamic_sections \
3131 _bfd_elf_create_dynamic_sections
3132 #define elf_backend_add_symbol_hook \
3133 sparc64_elf_add_symbol_hook
3134 #define elf_backend_get_symbol_type \
3135 sparc64_elf_get_symbol_type
3136 #define elf_backend_symbol_processing \
3137 sparc64_elf_symbol_processing
3138 #define elf_backend_check_relocs \
3139 sparc64_elf_check_relocs
3140 #define elf_backend_adjust_dynamic_symbol \
3141 sparc64_elf_adjust_dynamic_symbol
3142 #define elf_backend_size_dynamic_sections \
3143 sparc64_elf_size_dynamic_sections
3144 #define elf_backend_relocate_section \
3145 sparc64_elf_relocate_section
3146 #define elf_backend_finish_dynamic_symbol \
3147 sparc64_elf_finish_dynamic_symbol
3148 #define elf_backend_finish_dynamic_sections \
3149 sparc64_elf_finish_dynamic_sections
3150 #define elf_backend_print_symbol_all \
3151 sparc64_elf_print_symbol_all
3152 #define elf_backend_output_arch_syms \
3153 sparc64_elf_output_arch_syms
3154 #define bfd_elf64_bfd_copy_private_bfd_data \
3155 sparc64_elf_copy_private_bfd_data
3156 #define bfd_elf64_bfd_merge_private_bfd_data \
3157 sparc64_elf_merge_private_bfd_data
3159 #define elf_backend_size_info \
3160 sparc64_elf_size_info
3161 #define elf_backend_object_p \
3162 sparc64_elf_object_p
3164 #define elf_backend_want_got_plt 0
3165 #define elf_backend_plt_readonly 0
3166 #define elf_backend_want_plt_sym 1
3168 /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */
3169 #define elf_backend_plt_alignment 8
3171 #define elf_backend_got_header_size 8
3172 #define elf_backend_plt_header_size PLT_HEADER_SIZE
3174 #include "elf64-target.h"