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
52 PARAMS ((bfd_vma
, bfd_vma
));
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_merge_private_bfd_data
73 PARAMS ((bfd
*, bfd
*));
75 static const char *sparc64_elf_print_symbol_all
76 PARAMS ((bfd
*, PTR
, asymbol
*));
77 static boolean sparc64_elf_relax_section
78 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
79 static boolean sparc64_elf_relocate_section
80 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
81 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
82 static boolean sparc64_elf_finish_dynamic_symbol
83 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
85 static boolean sparc64_elf_finish_dynamic_sections
86 PARAMS ((bfd
*, struct bfd_link_info
*));
87 static boolean sparc64_elf_object_p
PARAMS ((bfd
*));
88 static long sparc64_elf_get_reloc_upper_bound
PARAMS ((bfd
*, asection
*));
89 static long sparc64_elf_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
90 static boolean sparc64_elf_slurp_one_reloc_table
91 PARAMS ((bfd
*, asection
*, Elf_Internal_Shdr
*, asymbol
**, boolean
));
92 static boolean sparc64_elf_slurp_reloc_table
93 PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
94 static long sparc64_elf_canonicalize_dynamic_reloc
95 PARAMS ((bfd
*, arelent
**, asymbol
**));
96 static void sparc64_elf_write_relocs
PARAMS ((bfd
*, asection
*, PTR
));
97 static enum elf_reloc_type_class sparc64_elf_reloc_type_class
98 PARAMS ((const Elf_Internal_Rela
*));
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,0,0xffffffff,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 HOWTO(R_SPARC_PLT32
, 0,2,32,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_PLT32", false,0,0xffffffff,true),
139 /* These aren't implemented yet. */
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
,bfd_elf_generic_reloc
, "R_SPARC_PLT64", false,0,MINUS_ONE
, true),
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_16_PCREL
, R_SPARC_DISP16
},
184 { BFD_RELOC_8
, R_SPARC_8
},
185 { BFD_RELOC_8_PCREL
, R_SPARC_DISP8
},
186 { BFD_RELOC_CTOR
, R_SPARC_64
},
187 { BFD_RELOC_32
, R_SPARC_32
},
188 { BFD_RELOC_32_PCREL
, R_SPARC_DISP32
},
189 { BFD_RELOC_HI22
, R_SPARC_HI22
},
190 { BFD_RELOC_LO10
, R_SPARC_LO10
, },
191 { BFD_RELOC_32_PCREL_S2
, R_SPARC_WDISP30
},
192 { BFD_RELOC_64_PCREL
, R_SPARC_DISP64
},
193 { BFD_RELOC_SPARC22
, R_SPARC_22
},
194 { BFD_RELOC_SPARC13
, R_SPARC_13
},
195 { BFD_RELOC_SPARC_GOT10
, R_SPARC_GOT10
},
196 { BFD_RELOC_SPARC_GOT13
, R_SPARC_GOT13
},
197 { BFD_RELOC_SPARC_GOT22
, R_SPARC_GOT22
},
198 { BFD_RELOC_SPARC_PC10
, R_SPARC_PC10
},
199 { BFD_RELOC_SPARC_PC22
, R_SPARC_PC22
},
200 { BFD_RELOC_SPARC_WPLT30
, R_SPARC_WPLT30
},
201 { BFD_RELOC_SPARC_COPY
, R_SPARC_COPY
},
202 { BFD_RELOC_SPARC_GLOB_DAT
, R_SPARC_GLOB_DAT
},
203 { BFD_RELOC_SPARC_JMP_SLOT
, R_SPARC_JMP_SLOT
},
204 { BFD_RELOC_SPARC_RELATIVE
, R_SPARC_RELATIVE
},
205 { BFD_RELOC_SPARC_WDISP22
, R_SPARC_WDISP22
},
206 { BFD_RELOC_SPARC_UA16
, R_SPARC_UA16
},
207 { BFD_RELOC_SPARC_UA32
, R_SPARC_UA32
},
208 { BFD_RELOC_SPARC_UA64
, R_SPARC_UA64
},
209 { BFD_RELOC_SPARC_10
, R_SPARC_10
},
210 { BFD_RELOC_SPARC_11
, R_SPARC_11
},
211 { BFD_RELOC_SPARC_64
, R_SPARC_64
},
212 { BFD_RELOC_SPARC_OLO10
, R_SPARC_OLO10
},
213 { BFD_RELOC_SPARC_HH22
, R_SPARC_HH22
},
214 { BFD_RELOC_SPARC_HM10
, R_SPARC_HM10
},
215 { BFD_RELOC_SPARC_LM22
, R_SPARC_LM22
},
216 { BFD_RELOC_SPARC_PC_HH22
, R_SPARC_PC_HH22
},
217 { BFD_RELOC_SPARC_PC_HM10
, R_SPARC_PC_HM10
},
218 { BFD_RELOC_SPARC_PC_LM22
, R_SPARC_PC_LM22
},
219 { BFD_RELOC_SPARC_WDISP16
, R_SPARC_WDISP16
},
220 { BFD_RELOC_SPARC_WDISP19
, R_SPARC_WDISP19
},
221 { BFD_RELOC_SPARC_7
, R_SPARC_7
},
222 { BFD_RELOC_SPARC_5
, R_SPARC_5
},
223 { BFD_RELOC_SPARC_6
, R_SPARC_6
},
224 { BFD_RELOC_SPARC_DISP64
, R_SPARC_DISP64
},
225 #ifndef SPARC64_OLD_RELOCS
226 { BFD_RELOC_SPARC_PLT32
, R_SPARC_PLT32
},
228 { BFD_RELOC_SPARC_PLT64
, R_SPARC_PLT64
},
229 { BFD_RELOC_SPARC_HIX22
, R_SPARC_HIX22
},
230 { BFD_RELOC_SPARC_LOX10
, R_SPARC_LOX10
},
231 { BFD_RELOC_SPARC_H44
, R_SPARC_H44
},
232 { BFD_RELOC_SPARC_M44
, R_SPARC_M44
},
233 { BFD_RELOC_SPARC_L44
, R_SPARC_L44
},
234 { BFD_RELOC_SPARC_REGISTER
, R_SPARC_REGISTER
}
237 static reloc_howto_type
*
238 sparc64_elf_reloc_type_lookup (abfd
, code
)
239 bfd
*abfd ATTRIBUTE_UNUSED
;
240 bfd_reloc_code_real_type code
;
243 for (i
= 0; i
< sizeof (sparc_reloc_map
) / sizeof (struct elf_reloc_map
); i
++)
245 if (sparc_reloc_map
[i
].bfd_reloc_val
== code
)
246 return &sparc64_elf_howto_table
[(int) sparc_reloc_map
[i
].elf_reloc_val
];
252 sparc64_elf_info_to_howto (abfd
, cache_ptr
, dst
)
253 bfd
*abfd ATTRIBUTE_UNUSED
;
255 Elf64_Internal_Rela
*dst
;
257 BFD_ASSERT (ELF64_R_TYPE_ID (dst
->r_info
) < (unsigned int) R_SPARC_max_std
);
258 cache_ptr
->howto
= &sparc64_elf_howto_table
[ELF64_R_TYPE_ID (dst
->r_info
)];
261 /* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA
262 section can represent up to two relocs, we must tell the user to allocate
266 sparc64_elf_get_reloc_upper_bound (abfd
, sec
)
267 bfd
*abfd ATTRIBUTE_UNUSED
;
270 return (sec
->reloc_count
* 2 + 1) * sizeof (arelent
*);
274 sparc64_elf_get_dynamic_reloc_upper_bound (abfd
)
277 return _bfd_elf_get_dynamic_reloc_upper_bound (abfd
) * 2;
280 /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of
281 them. We cannot use generic elf routines for this, because R_SPARC_OLO10
282 has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations
283 for the same location, R_SPARC_LO10 and R_SPARC_13. */
286 sparc64_elf_slurp_one_reloc_table (abfd
, asect
, rel_hdr
, symbols
, dynamic
)
289 Elf_Internal_Shdr
*rel_hdr
;
293 PTR allocated
= NULL
;
294 bfd_byte
*native_relocs
;
301 allocated
= (PTR
) bfd_malloc (rel_hdr
->sh_size
);
302 if (allocated
== NULL
)
305 if (bfd_seek (abfd
, rel_hdr
->sh_offset
, SEEK_SET
) != 0
306 || bfd_bread (allocated
, rel_hdr
->sh_size
, abfd
) != rel_hdr
->sh_size
)
309 native_relocs
= (bfd_byte
*) allocated
;
311 relents
= asect
->relocation
+ asect
->reloc_count
;
313 entsize
= rel_hdr
->sh_entsize
;
314 BFD_ASSERT (entsize
== sizeof (Elf64_External_Rela
));
316 count
= rel_hdr
->sh_size
/ entsize
;
318 for (i
= 0, relent
= relents
; i
< count
;
319 i
++, relent
++, native_relocs
+= entsize
)
321 Elf_Internal_Rela rela
;
323 bfd_elf64_swap_reloca_in (abfd
, (Elf64_External_Rela
*) native_relocs
, &rela
);
325 /* The address of an ELF reloc is section relative for an object
326 file, and absolute for an executable file or shared library.
327 The address of a normal BFD reloc is always section relative,
328 and the address of a dynamic reloc is absolute.. */
329 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0 || dynamic
)
330 relent
->address
= rela
.r_offset
;
332 relent
->address
= rela
.r_offset
- asect
->vma
;
334 if (ELF64_R_SYM (rela
.r_info
) == 0)
335 relent
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
340 ps
= symbols
+ ELF64_R_SYM (rela
.r_info
) - 1;
343 /* Canonicalize ELF section symbols. FIXME: Why? */
344 if ((s
->flags
& BSF_SECTION_SYM
) == 0)
345 relent
->sym_ptr_ptr
= ps
;
347 relent
->sym_ptr_ptr
= s
->section
->symbol_ptr_ptr
;
350 relent
->addend
= rela
.r_addend
;
352 BFD_ASSERT (ELF64_R_TYPE_ID (rela
.r_info
) < (unsigned int) R_SPARC_max_std
);
353 if (ELF64_R_TYPE_ID (rela
.r_info
) == R_SPARC_OLO10
)
355 relent
->howto
= &sparc64_elf_howto_table
[R_SPARC_LO10
];
356 relent
[1].address
= relent
->address
;
358 relent
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
359 relent
->addend
= ELF64_R_TYPE_DATA (rela
.r_info
);
360 relent
->howto
= &sparc64_elf_howto_table
[R_SPARC_13
];
363 relent
->howto
= &sparc64_elf_howto_table
[ELF64_R_TYPE_ID (rela
.r_info
)];
366 asect
->reloc_count
+= relent
- relents
;
368 if (allocated
!= NULL
)
374 if (allocated
!= NULL
)
379 /* Read in and swap the external relocs. */
382 sparc64_elf_slurp_reloc_table (abfd
, asect
, symbols
, dynamic
)
388 struct bfd_elf_section_data
* const d
= elf_section_data (asect
);
389 Elf_Internal_Shdr
*rel_hdr
;
390 Elf_Internal_Shdr
*rel_hdr2
;
393 if (asect
->relocation
!= NULL
)
398 if ((asect
->flags
& SEC_RELOC
) == 0
399 || asect
->reloc_count
== 0)
402 rel_hdr
= &d
->rel_hdr
;
403 rel_hdr2
= d
->rel_hdr2
;
405 BFD_ASSERT (asect
->rel_filepos
== rel_hdr
->sh_offset
406 || (rel_hdr2
&& asect
->rel_filepos
== rel_hdr2
->sh_offset
));
410 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
411 case because relocations against this section may use the
412 dynamic symbol table, and in that case bfd_section_from_shdr
413 in elf.c does not update the RELOC_COUNT. */
414 if (asect
->_raw_size
== 0)
417 rel_hdr
= &d
->this_hdr
;
418 asect
->reloc_count
= NUM_SHDR_ENTRIES (rel_hdr
);
422 amt
= asect
->reloc_count
;
423 amt
*= 2 * sizeof (arelent
);
424 asect
->relocation
= (arelent
*) bfd_alloc (abfd
, amt
);
425 if (asect
->relocation
== NULL
)
428 /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count. */
429 asect
->reloc_count
= 0;
431 if (!sparc64_elf_slurp_one_reloc_table (abfd
, asect
, rel_hdr
, symbols
,
436 && !sparc64_elf_slurp_one_reloc_table (abfd
, asect
, rel_hdr2
, symbols
,
443 /* Canonicalize the dynamic relocation entries. Note that we return
444 the dynamic relocations as a single block, although they are
445 actually associated with particular sections; the interface, which
446 was designed for SunOS style shared libraries, expects that there
447 is only one set of dynamic relocs. Any section that was actually
448 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
449 the dynamic symbol table, is considered to be a dynamic reloc
453 sparc64_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
461 if (elf_dynsymtab (abfd
) == 0)
463 bfd_set_error (bfd_error_invalid_operation
);
468 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
470 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
471 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
476 if (! sparc64_elf_slurp_reloc_table (abfd
, s
, syms
, true))
478 count
= s
->reloc_count
;
480 for (i
= 0; i
< count
; i
++)
491 /* Write out the relocs. */
494 sparc64_elf_write_relocs (abfd
, sec
, data
)
499 boolean
*failedp
= (boolean
*) data
;
500 Elf_Internal_Shdr
*rela_hdr
;
501 Elf64_External_Rela
*outbound_relocas
, *src_rela
;
502 unsigned int idx
, count
;
503 asymbol
*last_sym
= 0;
504 int last_sym_idx
= 0;
506 /* If we have already failed, don't do anything. */
510 if ((sec
->flags
& SEC_RELOC
) == 0)
513 /* The linker backend writes the relocs out itself, and sets the
514 reloc_count field to zero to inhibit writing them here. Also,
515 sometimes the SEC_RELOC flag gets set even when there aren't any
517 if (sec
->reloc_count
== 0)
520 /* We can combine two relocs that refer to the same address
521 into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the
522 latter is R_SPARC_13 with no associated symbol. */
524 for (idx
= 0; idx
< sec
->reloc_count
; idx
++)
530 addr
= sec
->orelocation
[idx
]->address
;
531 if (sec
->orelocation
[idx
]->howto
->type
== R_SPARC_LO10
532 && idx
< sec
->reloc_count
- 1)
534 arelent
*r
= sec
->orelocation
[idx
+ 1];
536 if (r
->howto
->type
== R_SPARC_13
537 && r
->address
== addr
538 && bfd_is_abs_section ((*r
->sym_ptr_ptr
)->section
)
539 && (*r
->sym_ptr_ptr
)->value
== 0)
544 rela_hdr
= &elf_section_data (sec
)->rel_hdr
;
546 rela_hdr
->sh_size
= rela_hdr
->sh_entsize
* count
;
547 rela_hdr
->contents
= (PTR
) bfd_alloc (abfd
, rela_hdr
->sh_size
);
548 if (rela_hdr
->contents
== NULL
)
554 /* Figure out whether the relocations are RELA or REL relocations. */
555 if (rela_hdr
->sh_type
!= SHT_RELA
)
558 /* orelocation has the data, reloc_count has the count... */
559 outbound_relocas
= (Elf64_External_Rela
*) rela_hdr
->contents
;
560 src_rela
= outbound_relocas
;
562 for (idx
= 0; idx
< sec
->reloc_count
; idx
++)
564 Elf_Internal_Rela dst_rela
;
569 ptr
= sec
->orelocation
[idx
];
571 /* The address of an ELF reloc is section relative for an object
572 file, and absolute for an executable file or shared library.
573 The address of a BFD reloc is always section relative. */
574 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
575 dst_rela
.r_offset
= ptr
->address
;
577 dst_rela
.r_offset
= ptr
->address
+ sec
->vma
;
579 sym
= *ptr
->sym_ptr_ptr
;
582 else if (bfd_is_abs_section (sym
->section
) && sym
->value
== 0)
587 n
= _bfd_elf_symbol_from_bfd_symbol (abfd
, &sym
);
596 if ((*ptr
->sym_ptr_ptr
)->the_bfd
!= NULL
597 && (*ptr
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
598 && ! _bfd_elf_validate_reloc (abfd
, ptr
))
604 if (ptr
->howto
->type
== R_SPARC_LO10
605 && idx
< sec
->reloc_count
- 1)
607 arelent
*r
= sec
->orelocation
[idx
+ 1];
609 if (r
->howto
->type
== R_SPARC_13
610 && r
->address
== ptr
->address
611 && bfd_is_abs_section ((*r
->sym_ptr_ptr
)->section
)
612 && (*r
->sym_ptr_ptr
)->value
== 0)
616 = ELF64_R_INFO (n
, ELF64_R_TYPE_INFO (r
->addend
,
620 dst_rela
.r_info
= ELF64_R_INFO (n
, R_SPARC_LO10
);
623 dst_rela
.r_info
= ELF64_R_INFO (n
, ptr
->howto
->type
);
625 dst_rela
.r_addend
= ptr
->addend
;
626 bfd_elf64_swap_reloca_out (abfd
, &dst_rela
, src_rela
);
631 /* Sparc64 ELF linker hash table. */
633 struct sparc64_elf_app_reg
636 unsigned short shndx
;
641 struct sparc64_elf_link_hash_table
643 struct elf_link_hash_table root
;
645 struct sparc64_elf_app_reg app_regs
[4];
648 /* Get the Sparc64 ELF linker hash table from a link_info structure. */
650 #define sparc64_elf_hash_table(p) \
651 ((struct sparc64_elf_link_hash_table *) ((p)->hash))
653 /* Create a Sparc64 ELF linker hash table. */
655 static struct bfd_link_hash_table
*
656 sparc64_elf_bfd_link_hash_table_create (abfd
)
659 struct sparc64_elf_link_hash_table
*ret
;
660 bfd_size_type amt
= sizeof (struct sparc64_elf_link_hash_table
);
662 ret
= (struct sparc64_elf_link_hash_table
*) bfd_zalloc (abfd
, amt
);
663 if (ret
== (struct sparc64_elf_link_hash_table
*) NULL
)
666 if (! _bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
667 _bfd_elf_link_hash_newfunc
))
669 bfd_release (abfd
, ret
);
673 return &ret
->root
.root
;
676 /* Utility for performing the standard initial work of an instruction
678 *PRELOCATION will contain the relocated item.
679 *PINSN will contain the instruction from the input stream.
680 If the result is `bfd_reloc_other' the caller can continue with
681 performing the relocation. Otherwise it must stop and return the
682 value to its caller. */
684 static bfd_reloc_status_type
685 init_insn_reloc (abfd
,
694 arelent
*reloc_entry
;
697 asection
*input_section
;
699 bfd_vma
*prelocation
;
703 reloc_howto_type
*howto
= reloc_entry
->howto
;
705 if (output_bfd
!= (bfd
*) NULL
706 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
707 && (! howto
->partial_inplace
708 || reloc_entry
->addend
== 0))
710 reloc_entry
->address
+= input_section
->output_offset
;
714 /* This works because partial_inplace == false. */
715 if (output_bfd
!= NULL
)
716 return bfd_reloc_continue
;
718 if (reloc_entry
->address
> input_section
->_cooked_size
)
719 return bfd_reloc_outofrange
;
721 relocation
= (symbol
->value
722 + symbol
->section
->output_section
->vma
723 + symbol
->section
->output_offset
);
724 relocation
+= reloc_entry
->addend
;
725 if (howto
->pc_relative
)
727 relocation
-= (input_section
->output_section
->vma
728 + input_section
->output_offset
);
729 relocation
-= reloc_entry
->address
;
732 *prelocation
= relocation
;
733 *pinsn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
734 return bfd_reloc_other
;
737 /* For unsupported relocs. */
739 static bfd_reloc_status_type
740 sparc_elf_notsup_reloc (abfd
,
747 bfd
*abfd ATTRIBUTE_UNUSED
;
748 arelent
*reloc_entry ATTRIBUTE_UNUSED
;
749 asymbol
*symbol ATTRIBUTE_UNUSED
;
750 PTR data ATTRIBUTE_UNUSED
;
751 asection
*input_section ATTRIBUTE_UNUSED
;
752 bfd
*output_bfd ATTRIBUTE_UNUSED
;
753 char **error_message ATTRIBUTE_UNUSED
;
755 return bfd_reloc_notsupported
;
758 /* Handle the WDISP16 reloc. */
760 static bfd_reloc_status_type
761 sparc_elf_wdisp16_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
762 output_bfd
, error_message
)
764 arelent
*reloc_entry
;
767 asection
*input_section
;
769 char **error_message ATTRIBUTE_UNUSED
;
773 bfd_reloc_status_type status
;
775 status
= init_insn_reloc (abfd
, reloc_entry
, symbol
, data
,
776 input_section
, output_bfd
, &relocation
, &insn
);
777 if (status
!= bfd_reloc_other
)
780 insn
&= ~ (bfd_vma
) 0x303fff;
781 insn
|= (((relocation
>> 2) & 0xc000) << 6) | ((relocation
>> 2) & 0x3fff);
782 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
784 if ((bfd_signed_vma
) relocation
< - 0x40000
785 || (bfd_signed_vma
) relocation
> 0x3ffff)
786 return bfd_reloc_overflow
;
791 /* Handle the HIX22 reloc. */
793 static bfd_reloc_status_type
794 sparc_elf_hix22_reloc (abfd
,
802 arelent
*reloc_entry
;
805 asection
*input_section
;
807 char **error_message ATTRIBUTE_UNUSED
;
811 bfd_reloc_status_type status
;
813 status
= init_insn_reloc (abfd
, reloc_entry
, symbol
, data
,
814 input_section
, output_bfd
, &relocation
, &insn
);
815 if (status
!= bfd_reloc_other
)
818 relocation
^= MINUS_ONE
;
819 insn
= (insn
&~ (bfd_vma
) 0x3fffff) | ((relocation
>> 10) & 0x3fffff);
820 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
822 if ((relocation
& ~ (bfd_vma
) 0xffffffff) != 0)
823 return bfd_reloc_overflow
;
828 /* Handle the LOX10 reloc. */
830 static bfd_reloc_status_type
831 sparc_elf_lox10_reloc (abfd
,
839 arelent
*reloc_entry
;
842 asection
*input_section
;
844 char **error_message ATTRIBUTE_UNUSED
;
848 bfd_reloc_status_type status
;
850 status
= init_insn_reloc (abfd
, reloc_entry
, symbol
, data
,
851 input_section
, output_bfd
, &relocation
, &insn
);
852 if (status
!= bfd_reloc_other
)
855 insn
= (insn
&~ (bfd_vma
) 0x1fff) | 0x1c00 | (relocation
& 0x3ff);
856 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
863 /* Both the headers and the entries are icache aligned. */
864 #define PLT_ENTRY_SIZE 32
865 #define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE)
866 #define LARGE_PLT_THRESHOLD 32768
867 #define GOT_RESERVED_ENTRIES 1
869 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
871 /* Fill in the .plt section. */
874 sparc64_elf_build_plt (output_bfd
, contents
, nentries
)
876 unsigned char *contents
;
879 const unsigned int nop
= 0x01000000;
882 /* The first four entries are reserved, and are initially undefined.
883 We fill them with `illtrap 0' to force ld.so to do something. */
885 for (i
= 0; i
< PLT_HEADER_SIZE
/4; ++i
)
886 bfd_put_32 (output_bfd
, (bfd_vma
) 0, contents
+i
*4);
888 /* The first 32768 entries are close enough to plt1 to get there via
889 a straight branch. */
891 for (i
= 4; i
< LARGE_PLT_THRESHOLD
&& i
< nentries
; ++i
)
893 unsigned char *entry
= contents
+ i
* PLT_ENTRY_SIZE
;
894 unsigned int sethi
, ba
;
896 /* sethi (. - plt0), %g1 */
897 sethi
= 0x03000000 | (i
* PLT_ENTRY_SIZE
);
899 /* ba,a,pt %xcc, plt1 */
900 ba
= 0x30680000 | (((contents
+PLT_ENTRY_SIZE
) - (entry
+4)) / 4 & 0x7ffff);
902 bfd_put_32 (output_bfd
, (bfd_vma
) sethi
, entry
);
903 bfd_put_32 (output_bfd
, (bfd_vma
) ba
, entry
+ 4);
904 bfd_put_32 (output_bfd
, (bfd_vma
) nop
, entry
+ 8);
905 bfd_put_32 (output_bfd
, (bfd_vma
) nop
, entry
+ 12);
906 bfd_put_32 (output_bfd
, (bfd_vma
) nop
, entry
+ 16);
907 bfd_put_32 (output_bfd
, (bfd_vma
) nop
, entry
+ 20);
908 bfd_put_32 (output_bfd
, (bfd_vma
) nop
, entry
+ 24);
909 bfd_put_32 (output_bfd
, (bfd_vma
) nop
, entry
+ 28);
912 /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of
913 160: 160 entries and 160 pointers. This is to separate code from data,
914 which is much friendlier on the cache. */
916 for (; i
< nentries
; i
+= 160)
918 int block
= (i
+ 160 <= nentries
? 160 : nentries
- i
);
919 for (j
= 0; j
< block
; ++j
)
921 unsigned char *entry
, *ptr
;
924 entry
= contents
+ i
*PLT_ENTRY_SIZE
+ j
*4*6;
925 ptr
= contents
+ i
*PLT_ENTRY_SIZE
+ block
*4*6 + j
*8;
927 /* ldx [%o7 + ptr - (entry+4)], %g1 */
928 ldx
= 0xc25be000 | ((ptr
- (entry
+4)) & 0x1fff);
936 bfd_put_32 (output_bfd
, (bfd_vma
) 0x8a10000f, entry
);
937 bfd_put_32 (output_bfd
, (bfd_vma
) 0x40000002, entry
+ 4);
938 bfd_put_32 (output_bfd
, (bfd_vma
) nop
, entry
+ 8);
939 bfd_put_32 (output_bfd
, (bfd_vma
) ldx
, entry
+ 12);
940 bfd_put_32 (output_bfd
, (bfd_vma
) 0x83c3c001, entry
+ 16);
941 bfd_put_32 (output_bfd
, (bfd_vma
) 0x9e100005, entry
+ 20);
943 bfd_put_64 (output_bfd
, (bfd_vma
) (contents
- (entry
+ 4)), ptr
);
948 /* Return the offset of a particular plt entry within the .plt section. */
951 sparc64_elf_plt_entry_offset (index
)
956 if (index
< LARGE_PLT_THRESHOLD
)
957 return index
* PLT_ENTRY_SIZE
;
959 /* See above for details. */
961 block
= (index
- LARGE_PLT_THRESHOLD
) / 160;
962 ofs
= (index
- LARGE_PLT_THRESHOLD
) % 160;
964 return (LARGE_PLT_THRESHOLD
+ block
* 160) * PLT_ENTRY_SIZE
+ ofs
* 6 * 4;
968 sparc64_elf_plt_ptr_offset (index
, max
)
972 bfd_vma block
, ofs
, last
;
974 BFD_ASSERT(index
>= LARGE_PLT_THRESHOLD
);
976 /* See above for details. */
978 block
= (((index
- LARGE_PLT_THRESHOLD
) / 160) * 160) + LARGE_PLT_THRESHOLD
;
980 if (block
+ 160 > max
)
981 last
= (max
- LARGE_PLT_THRESHOLD
) % 160;
985 return (block
* PLT_ENTRY_SIZE
990 /* Look through the relocs for a section during the first phase, and
991 allocate space in the global offset table or procedure linkage
995 sparc64_elf_check_relocs (abfd
, info
, sec
, relocs
)
997 struct bfd_link_info
*info
;
999 const Elf_Internal_Rela
*relocs
;
1002 Elf_Internal_Shdr
*symtab_hdr
;
1003 struct elf_link_hash_entry
**sym_hashes
;
1004 bfd_vma
*local_got_offsets
;
1005 const Elf_Internal_Rela
*rel
;
1006 const Elf_Internal_Rela
*rel_end
;
1011 if (info
->relocateable
|| !(sec
->flags
& SEC_ALLOC
))
1014 dynobj
= elf_hash_table (info
)->dynobj
;
1015 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1016 sym_hashes
= elf_sym_hashes (abfd
);
1017 local_got_offsets
= elf_local_got_offsets (abfd
);
1023 rel_end
= relocs
+ NUM_SHDR_ENTRIES (& elf_section_data (sec
)->rel_hdr
);
1024 for (rel
= relocs
; rel
< rel_end
; rel
++)
1026 unsigned long r_symndx
;
1027 struct elf_link_hash_entry
*h
;
1029 r_symndx
= ELF64_R_SYM (rel
->r_info
);
1030 if (r_symndx
< symtab_hdr
->sh_info
)
1033 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1035 switch (ELF64_R_TYPE_ID (rel
->r_info
))
1040 /* This symbol requires a global offset table entry. */
1044 /* Create the .got section. */
1045 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
1046 if (! _bfd_elf_create_got_section (dynobj
, info
))
1052 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1053 BFD_ASSERT (sgot
!= NULL
);
1056 if (srelgot
== NULL
&& (h
!= NULL
|| info
->shared
))
1058 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1059 if (srelgot
== NULL
)
1061 srelgot
= bfd_make_section (dynobj
, ".rela.got");
1063 || ! bfd_set_section_flags (dynobj
, srelgot
,
1068 | SEC_LINKER_CREATED
1070 || ! bfd_set_section_alignment (dynobj
, srelgot
, 3))
1077 if (h
->got
.offset
!= (bfd_vma
) -1)
1079 /* We have already allocated space in the .got. */
1082 h
->got
.offset
= sgot
->_raw_size
;
1084 /* Make sure this symbol is output as a dynamic symbol. */
1085 if (h
->dynindx
== -1)
1087 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
1091 srelgot
->_raw_size
+= sizeof (Elf64_External_Rela
);
1095 /* This is a global offset table entry for a local
1097 if (local_got_offsets
== NULL
)
1100 register unsigned int i
;
1102 size
= symtab_hdr
->sh_info
;
1103 size
*= sizeof (bfd_vma
);
1104 local_got_offsets
= (bfd_vma
*) bfd_alloc (abfd
, size
);
1105 if (local_got_offsets
== NULL
)
1107 elf_local_got_offsets (abfd
) = local_got_offsets
;
1108 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
1109 local_got_offsets
[i
] = (bfd_vma
) -1;
1111 if (local_got_offsets
[r_symndx
] != (bfd_vma
) -1)
1113 /* We have already allocated space in the .got. */
1116 local_got_offsets
[r_symndx
] = sgot
->_raw_size
;
1120 /* If we are generating a shared object, we need to
1121 output a R_SPARC_RELATIVE reloc so that the
1122 dynamic linker can adjust this GOT entry. */
1123 srelgot
->_raw_size
+= sizeof (Elf64_External_Rela
);
1127 sgot
->_raw_size
+= 8;
1130 /* Doesn't work for 64-bit -fPIC, since sethi/or builds
1131 unsigned numbers. If we permit ourselves to modify
1132 code so we get sethi/xor, this could work.
1133 Question: do we consider conditionally re-enabling
1134 this for -fpic, once we know about object code models? */
1135 /* If the .got section is more than 0x1000 bytes, we add
1136 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1137 bit relocations have a greater chance of working. */
1138 if (sgot
->_raw_size
>= 0x1000
1139 && elf_hash_table (info
)->hgot
->root
.u
.def
.value
== 0)
1140 elf_hash_table (info
)->hgot
->root
.u
.def
.value
= 0x1000;
1145 case R_SPARC_WPLT30
:
1147 case R_SPARC_HIPLT22
:
1148 case R_SPARC_LOPLT10
:
1149 case R_SPARC_PCPLT32
:
1150 case R_SPARC_PCPLT22
:
1151 case R_SPARC_PCPLT10
:
1153 /* This symbol requires a procedure linkage table entry. We
1154 actually build the entry in adjust_dynamic_symbol,
1155 because this might be a case of linking PIC code without
1156 linking in any dynamic objects, in which case we don't
1157 need to generate a procedure linkage table after all. */
1161 /* It does not make sense to have a procedure linkage
1162 table entry for a local symbol. */
1163 bfd_set_error (bfd_error_bad_value
);
1167 /* Make sure this symbol is output as a dynamic symbol. */
1168 if (h
->dynindx
== -1)
1170 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
1174 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
1175 if (ELF64_R_TYPE_ID (rel
->r_info
) != R_SPARC_PLT32
1176 && ELF64_R_TYPE_ID (rel
->r_info
) != R_SPARC_PLT64
)
1181 case R_SPARC_PC_HH22
:
1182 case R_SPARC_PC_HM10
:
1183 case R_SPARC_PC_LM22
:
1185 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1189 case R_SPARC_DISP16
:
1190 case R_SPARC_DISP32
:
1191 case R_SPARC_DISP64
:
1192 case R_SPARC_WDISP30
:
1193 case R_SPARC_WDISP22
:
1194 case R_SPARC_WDISP19
:
1195 case R_SPARC_WDISP16
:
1224 /* When creating a shared object, we must copy these relocs
1225 into the output file. We create a reloc section in
1226 dynobj and make room for the reloc.
1228 But don't do this for debugging sections -- this shows up
1229 with DWARF2 -- first because they are not loaded, and
1230 second because DWARF sez the debug info is not to be
1231 biased by the load address. */
1232 if (info
->shared
&& (sec
->flags
& SEC_ALLOC
))
1238 name
= (bfd_elf_string_from_elf_section
1240 elf_elfheader (abfd
)->e_shstrndx
,
1241 elf_section_data (sec
)->rel_hdr
.sh_name
));
1245 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1246 && strcmp (bfd_get_section_name (abfd
, sec
),
1249 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1254 sreloc
= bfd_make_section (dynobj
, name
);
1255 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
1256 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1257 if ((sec
->flags
& SEC_ALLOC
) != 0)
1258 flags
|= SEC_ALLOC
| SEC_LOAD
;
1260 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
1261 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
1264 if (sec
->flags
& SEC_READONLY
)
1265 info
->flags
|= DF_TEXTREL
;
1268 sreloc
->_raw_size
+= sizeof (Elf64_External_Rela
);
1272 case R_SPARC_REGISTER
:
1273 /* Nothing to do. */
1277 (*_bfd_error_handler
) (_("%s: check_relocs: unhandled reloc type %d"),
1278 bfd_archive_filename (abfd
),
1279 ELF64_R_TYPE_ID (rel
->r_info
));
1287 /* Hook called by the linker routine which adds symbols from an object
1288 file. We use it for STT_REGISTER symbols. */
1291 sparc64_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
)
1293 struct bfd_link_info
*info
;
1294 const Elf_Internal_Sym
*sym
;
1296 flagword
*flagsp ATTRIBUTE_UNUSED
;
1297 asection
**secp ATTRIBUTE_UNUSED
;
1298 bfd_vma
*valp ATTRIBUTE_UNUSED
;
1300 static const char *const stt_types
[] = { "NOTYPE", "OBJECT", "FUNCTION" };
1302 if (ELF_ST_TYPE (sym
->st_info
) == STT_REGISTER
)
1305 struct sparc64_elf_app_reg
*p
;
1307 reg
= (int)sym
->st_value
;
1310 case 2: reg
-= 2; break;
1311 case 6: reg
-= 4; break;
1313 (*_bfd_error_handler
)
1314 (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"),
1315 bfd_archive_filename (abfd
));
1319 if (info
->hash
->creator
!= abfd
->xvec
1320 || (abfd
->flags
& DYNAMIC
) != 0)
1322 /* STT_REGISTER only works when linking an elf64_sparc object.
1323 If STT_REGISTER comes from a dynamic object, don't put it into
1324 the output bfd. The dynamic linker will recheck it. */
1329 p
= sparc64_elf_hash_table(info
)->app_regs
+ reg
;
1331 if (p
->name
!= NULL
&& strcmp (p
->name
, *namep
))
1333 (*_bfd_error_handler
)
1334 (_("Register %%g%d used incompatibly: %s in %s"),
1335 (int) sym
->st_value
,
1336 **namep
? *namep
: "#scratch", bfd_archive_filename (abfd
));
1337 (*_bfd_error_handler
)
1338 (_(" previously %s in %s"),
1339 *p
->name
? p
->name
: "#scratch", bfd_archive_filename (p
->abfd
));
1343 if (p
->name
== NULL
)
1347 struct elf_link_hash_entry
*h
;
1349 h
= (struct elf_link_hash_entry
*)
1350 bfd_link_hash_lookup (info
->hash
, *namep
, false, false, false);
1354 unsigned char type
= h
->type
;
1356 if (type
> STT_FUNC
)
1358 (*_bfd_error_handler
)
1359 (_("Symbol `%s' has differing types: %s in %s"),
1360 *namep
, "REGISTER", bfd_archive_filename (abfd
));
1361 (*_bfd_error_handler
)
1362 (_(" previously %s in %s"),
1363 stt_types
[type
], bfd_archive_filename (p
->abfd
));
1367 p
->name
= bfd_hash_allocate (&info
->hash
->table
,
1368 strlen (*namep
) + 1);
1372 strcpy (p
->name
, *namep
);
1376 p
->bind
= ELF_ST_BIND (sym
->st_info
);
1378 p
->shndx
= sym
->st_shndx
;
1382 if (p
->bind
== STB_WEAK
1383 && ELF_ST_BIND (sym
->st_info
) == STB_GLOBAL
)
1385 p
->bind
= STB_GLOBAL
;
1392 else if (! *namep
|| ! **namep
)
1397 struct sparc64_elf_app_reg
*p
;
1399 p
= sparc64_elf_hash_table(info
)->app_regs
;
1400 for (i
= 0; i
< 4; i
++, p
++)
1401 if (p
->name
!= NULL
&& ! strcmp (p
->name
, *namep
))
1403 unsigned char type
= ELF_ST_TYPE (sym
->st_info
);
1405 if (type
> STT_FUNC
)
1407 (*_bfd_error_handler
)
1408 (_("Symbol `%s' has differing types: %s in %s"),
1409 *namep
, stt_types
[type
], bfd_archive_filename (abfd
));
1410 (*_bfd_error_handler
)
1411 (_(" previously %s in %s"),
1412 "REGISTER", bfd_archive_filename (p
->abfd
));
1419 /* This function takes care of emiting STT_REGISTER symbols
1420 which we cannot easily keep in the symbol hash table. */
1423 sparc64_elf_output_arch_syms (output_bfd
, info
, finfo
, func
)
1424 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1425 struct bfd_link_info
*info
;
1427 boolean (*func
) PARAMS ((PTR
, const char *,
1428 Elf_Internal_Sym
*, asection
*));
1431 struct sparc64_elf_app_reg
*app_regs
=
1432 sparc64_elf_hash_table(info
)->app_regs
;
1433 Elf_Internal_Sym sym
;
1435 /* We arranged in size_dynamic_sections to put the STT_REGISTER entries
1436 at the end of the dynlocal list, so they came at the end of the local
1437 symbols in the symtab. Except that they aren't STB_LOCAL, so we need
1438 to back up symtab->sh_info. */
1439 if (elf_hash_table (info
)->dynlocal
)
1441 bfd
* dynobj
= elf_hash_table (info
)->dynobj
;
1442 asection
*dynsymsec
= bfd_get_section_by_name (dynobj
, ".dynsym");
1443 struct elf_link_local_dynamic_entry
*e
;
1445 for (e
= elf_hash_table (info
)->dynlocal
; e
; e
= e
->next
)
1446 if (e
->input_indx
== -1)
1450 elf_section_data (dynsymsec
->output_section
)->this_hdr
.sh_info
1455 if (info
->strip
== strip_all
)
1458 for (reg
= 0; reg
< 4; reg
++)
1459 if (app_regs
[reg
].name
!= NULL
)
1461 if (info
->strip
== strip_some
1462 && bfd_hash_lookup (info
->keep_hash
,
1463 app_regs
[reg
].name
,
1464 false, false) == NULL
)
1467 sym
.st_value
= reg
< 2 ? reg
+ 2 : reg
+ 4;
1470 sym
.st_info
= ELF_ST_INFO (app_regs
[reg
].bind
, STT_REGISTER
);
1471 sym
.st_shndx
= app_regs
[reg
].shndx
;
1472 if (! (*func
) (finfo
, app_regs
[reg
].name
, &sym
,
1473 sym
.st_shndx
== SHN_ABS
1474 ? bfd_abs_section_ptr
: bfd_und_section_ptr
))
1482 sparc64_elf_get_symbol_type (elf_sym
, type
)
1483 Elf_Internal_Sym
* elf_sym
;
1486 if (ELF_ST_TYPE (elf_sym
->st_info
) == STT_REGISTER
)
1487 return STT_REGISTER
;
1492 /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL
1493 even in SHN_UNDEF section. */
1496 sparc64_elf_symbol_processing (abfd
, asym
)
1497 bfd
*abfd ATTRIBUTE_UNUSED
;
1500 elf_symbol_type
*elfsym
;
1502 elfsym
= (elf_symbol_type
*) asym
;
1503 if (elfsym
->internal_elf_sym
.st_info
1504 == ELF_ST_INFO (STB_GLOBAL
, STT_REGISTER
))
1506 asym
->flags
|= BSF_GLOBAL
;
1510 /* Adjust a symbol defined by a dynamic object and referenced by a
1511 regular object. The current definition is in some section of the
1512 dynamic object, but we're not including those sections. We have to
1513 change the definition to something the rest of the link can
1517 sparc64_elf_adjust_dynamic_symbol (info
, h
)
1518 struct bfd_link_info
*info
;
1519 struct elf_link_hash_entry
*h
;
1523 unsigned int power_of_two
;
1525 dynobj
= elf_hash_table (info
)->dynobj
;
1527 /* Make sure we know what is going on here. */
1528 BFD_ASSERT (dynobj
!= NULL
1529 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
1530 || h
->weakdef
!= NULL
1531 || ((h
->elf_link_hash_flags
1532 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
1533 && (h
->elf_link_hash_flags
1534 & ELF_LINK_HASH_REF_REGULAR
) != 0
1535 && (h
->elf_link_hash_flags
1536 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
1538 /* If this is a function, put it in the procedure linkage table. We
1539 will fill in the contents of the procedure linkage table later
1540 (although we could actually do it here). The STT_NOTYPE
1541 condition is a hack specifically for the Oracle libraries
1542 delivered for Solaris; for some inexplicable reason, they define
1543 some of their functions as STT_NOTYPE when they really should be
1545 if (h
->type
== STT_FUNC
1546 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0
1547 || (h
->type
== STT_NOTYPE
1548 && (h
->root
.type
== bfd_link_hash_defined
1549 || h
->root
.type
== bfd_link_hash_defweak
)
1550 && (h
->root
.u
.def
.section
->flags
& SEC_CODE
) != 0))
1552 if (! elf_hash_table (info
)->dynamic_sections_created
)
1554 /* This case can occur if we saw a WPLT30 reloc in an input
1555 file, but none of the input files were dynamic objects.
1556 In such a case, we don't actually need to build a
1557 procedure linkage table, and we can just do a WDISP30
1559 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
1563 s
= bfd_get_section_by_name (dynobj
, ".plt");
1564 BFD_ASSERT (s
!= NULL
);
1566 /* The first four bit in .plt is reserved. */
1567 if (s
->_raw_size
== 0)
1568 s
->_raw_size
= PLT_HEADER_SIZE
;
1570 /* If this symbol is not defined in a regular file, and we are
1571 not generating a shared library, then set the symbol to this
1572 location in the .plt. This is required to make function
1573 pointers compare as equal between the normal executable and
1574 the shared library. */
1576 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1578 h
->root
.u
.def
.section
= s
;
1579 h
->root
.u
.def
.value
= s
->_raw_size
;
1582 /* To simplify matters later, just store the plt index here. */
1583 h
->plt
.offset
= s
->_raw_size
/ PLT_ENTRY_SIZE
;
1585 /* Make room for this entry. */
1586 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1588 /* We also need to make an entry in the .rela.plt section. */
1590 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1591 BFD_ASSERT (s
!= NULL
);
1593 s
->_raw_size
+= sizeof (Elf64_External_Rela
);
1595 /* The procedure linkage table size is bounded by the magnitude
1596 of the offset we can describe in the entry. */
1597 if (s
->_raw_size
>= (bfd_vma
)1 << 32)
1599 bfd_set_error (bfd_error_bad_value
);
1606 /* If this is a weak symbol, and there is a real definition, the
1607 processor independent code will have arranged for us to see the
1608 real definition first, and we can just use the same value. */
1609 if (h
->weakdef
!= NULL
)
1611 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1612 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1613 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1614 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1618 /* This is a reference to a symbol defined by a dynamic object which
1619 is not a function. */
1621 /* If we are creating a shared library, we must presume that the
1622 only references to the symbol are via the global offset table.
1623 For such cases we need not do anything here; the relocations will
1624 be handled correctly by relocate_section. */
1628 /* We must allocate the symbol in our .dynbss section, which will
1629 become part of the .bss section of the executable. There will be
1630 an entry for this symbol in the .dynsym section. The dynamic
1631 object will contain position independent code, so all references
1632 from the dynamic object to this symbol will go through the global
1633 offset table. The dynamic linker will use the .dynsym entry to
1634 determine the address it must put in the global offset table, so
1635 both the dynamic object and the regular object will refer to the
1636 same memory location for the variable. */
1638 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1639 BFD_ASSERT (s
!= NULL
);
1641 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1642 to copy the initial value out of the dynamic object and into the
1643 runtime process image. We need to remember the offset into the
1644 .rel.bss section we are going to use. */
1645 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1649 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1650 BFD_ASSERT (srel
!= NULL
);
1651 srel
->_raw_size
+= sizeof (Elf64_External_Rela
);
1652 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1655 /* We need to figure out the alignment required for this symbol. I
1656 have no idea how ELF linkers handle this. 16-bytes is the size
1657 of the largest type that requires hard alignment -- long double. */
1658 power_of_two
= bfd_log2 (h
->size
);
1659 if (power_of_two
> 4)
1662 /* Apply the required alignment. */
1663 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1664 (bfd_size_type
) (1 << power_of_two
));
1665 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1667 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1671 /* Define the symbol as being at this point in the section. */
1672 h
->root
.u
.def
.section
= s
;
1673 h
->root
.u
.def
.value
= s
->_raw_size
;
1675 /* Increment the section size to make room for the symbol. */
1676 s
->_raw_size
+= h
->size
;
1681 /* Set the sizes of the dynamic sections. */
1684 sparc64_elf_size_dynamic_sections (output_bfd
, info
)
1686 struct bfd_link_info
*info
;
1692 dynobj
= elf_hash_table (info
)->dynobj
;
1693 BFD_ASSERT (dynobj
!= NULL
);
1695 if (elf_hash_table (info
)->dynamic_sections_created
)
1697 /* Set the contents of the .interp section to the interpreter. */
1700 s
= bfd_get_section_by_name (dynobj
, ".interp");
1701 BFD_ASSERT (s
!= NULL
);
1702 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1703 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1708 /* We may have created entries in the .rela.got section.
1709 However, if we are not creating the dynamic sections, we will
1710 not actually use these entries. Reset the size of .rela.got,
1711 which will cause it to get stripped from the output file
1713 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1718 /* The check_relocs and adjust_dynamic_symbol entry points have
1719 determined the sizes of the various dynamic sections. Allocate
1722 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1727 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1730 /* It's OK to base decisions on the section name, because none
1731 of the dynobj section names depend upon the input files. */
1732 name
= bfd_get_section_name (dynobj
, s
);
1736 if (strncmp (name
, ".rela", 5) == 0)
1738 if (s
->_raw_size
== 0)
1740 /* If we don't need this section, strip it from the
1741 output file. This is to handle .rela.bss and
1742 .rel.plt. We must create it in
1743 create_dynamic_sections, because it must be created
1744 before the linker maps input sections to output
1745 sections. The linker does that before
1746 adjust_dynamic_symbol is called, and it is that
1747 function which decides whether anything needs to go
1748 into these sections. */
1753 if (strcmp (name
, ".rela.plt") == 0)
1756 /* We use the reloc_count field as a counter if we need
1757 to copy relocs into the output file. */
1761 else if (strcmp (name
, ".plt") != 0
1762 && strncmp (name
, ".got", 4) != 0)
1764 /* It's not one of our sections, so don't allocate space. */
1770 _bfd_strip_section_from_output (info
, s
);
1774 /* Allocate memory for the section contents. Zero the memory
1775 for the benefit of .rela.plt, which has 4 unused entries
1776 at the beginning, and we don't want garbage. */
1777 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1778 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1782 if (elf_hash_table (info
)->dynamic_sections_created
)
1784 /* Add some entries to the .dynamic section. We fill in the
1785 values later, in sparc64_elf_finish_dynamic_sections, but we
1786 must add the entries now so that we get the correct size for
1787 the .dynamic section. The DT_DEBUG entry is filled in by the
1788 dynamic linker and used by the debugger. */
1789 #define add_dynamic_entry(TAG, VAL) \
1790 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1793 struct sparc64_elf_app_reg
* app_regs
;
1794 struct elf_strtab_hash
*dynstr
;
1795 struct elf_link_hash_table
*eht
= elf_hash_table (info
);
1799 if (!add_dynamic_entry (DT_DEBUG
, 0))
1805 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1806 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
1807 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1808 || !add_dynamic_entry (DT_JMPREL
, 0))
1812 if (!add_dynamic_entry (DT_RELA
, 0)
1813 || !add_dynamic_entry (DT_RELASZ
, 0)
1814 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
1817 if (info
->flags
& DF_TEXTREL
)
1819 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1823 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
1824 entries if needed. */
1825 app_regs
= sparc64_elf_hash_table (info
)->app_regs
;
1826 dynstr
= eht
->dynstr
;
1828 for (reg
= 0; reg
< 4; reg
++)
1829 if (app_regs
[reg
].name
!= NULL
)
1831 struct elf_link_local_dynamic_entry
*entry
, *e
;
1833 if (!add_dynamic_entry (DT_SPARC_REGISTER
, 0))
1836 entry
= (struct elf_link_local_dynamic_entry
*)
1837 bfd_hash_allocate (&info
->hash
->table
, sizeof (*entry
));
1841 /* We cheat here a little bit: the symbol will not be local, so we
1842 put it at the end of the dynlocal linked list. We will fix it
1843 later on, as we have to fix other fields anyway. */
1844 entry
->isym
.st_value
= reg
< 2 ? reg
+ 2 : reg
+ 4;
1845 entry
->isym
.st_size
= 0;
1846 if (*app_regs
[reg
].name
!= '\0')
1848 = _bfd_elf_strtab_add (dynstr
, app_regs
[reg
].name
, false);
1850 entry
->isym
.st_name
= 0;
1851 entry
->isym
.st_other
= 0;
1852 entry
->isym
.st_info
= ELF_ST_INFO (app_regs
[reg
].bind
,
1854 entry
->isym
.st_shndx
= app_regs
[reg
].shndx
;
1856 entry
->input_bfd
= output_bfd
;
1857 entry
->input_indx
= -1;
1859 if (eht
->dynlocal
== NULL
)
1860 eht
->dynlocal
= entry
;
1863 for (e
= eht
->dynlocal
; e
->next
; e
= e
->next
)
1870 #undef add_dynamic_entry
1875 #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0)
1876 #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1)
1879 sparc64_elf_relax_section (abfd
, section
, link_info
, again
)
1880 bfd
*abfd ATTRIBUTE_UNUSED
;
1881 asection
*section ATTRIBUTE_UNUSED
;
1882 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
1886 SET_SEC_DO_RELAX (section
);
1890 /* Relocate a SPARC64 ELF section. */
1893 sparc64_elf_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1894 contents
, relocs
, local_syms
, local_sections
)
1896 struct bfd_link_info
*info
;
1898 asection
*input_section
;
1900 Elf_Internal_Rela
*relocs
;
1901 Elf_Internal_Sym
*local_syms
;
1902 asection
**local_sections
;
1905 Elf_Internal_Shdr
*symtab_hdr
;
1906 struct elf_link_hash_entry
**sym_hashes
;
1907 bfd_vma
*local_got_offsets
;
1912 Elf_Internal_Rela
*rel
;
1913 Elf_Internal_Rela
*relend
;
1915 dynobj
= elf_hash_table (info
)->dynobj
;
1916 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1917 sym_hashes
= elf_sym_hashes (input_bfd
);
1918 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1920 if (elf_hash_table(info
)->hgot
== NULL
)
1923 got_base
= elf_hash_table (info
)->hgot
->root
.u
.def
.value
;
1925 sgot
= splt
= sreloc
= NULL
;
1928 relend
= relocs
+ NUM_SHDR_ENTRIES (& elf_section_data (input_section
)->rel_hdr
);
1929 for (; rel
< relend
; rel
++)
1932 reloc_howto_type
*howto
;
1933 unsigned long r_symndx
;
1934 struct elf_link_hash_entry
*h
;
1935 Elf_Internal_Sym
*sym
;
1938 bfd_reloc_status_type r
;
1939 boolean is_plt
= false;
1941 r_type
= ELF64_R_TYPE_ID (rel
->r_info
);
1942 if (r_type
< 0 || r_type
>= (int) R_SPARC_max_std
)
1944 bfd_set_error (bfd_error_bad_value
);
1947 howto
= sparc64_elf_howto_table
+ r_type
;
1949 r_symndx
= ELF64_R_SYM (rel
->r_info
);
1951 if (info
->relocateable
)
1953 /* This is a relocateable link. We don't have to change
1954 anything, unless the reloc is against a section symbol,
1955 in which case we have to adjust according to where the
1956 section symbol winds up in the output section. */
1957 if (r_symndx
< symtab_hdr
->sh_info
)
1959 sym
= local_syms
+ r_symndx
;
1960 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
1962 sec
= local_sections
[r_symndx
];
1963 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
1970 /* This is a final link. */
1974 if (r_symndx
< symtab_hdr
->sh_info
)
1976 sym
= local_syms
+ r_symndx
;
1977 sec
= local_sections
[r_symndx
];
1978 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
1982 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1983 while (h
->root
.type
== bfd_link_hash_indirect
1984 || h
->root
.type
== bfd_link_hash_warning
)
1985 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1986 if (h
->root
.type
== bfd_link_hash_defined
1987 || h
->root
.type
== bfd_link_hash_defweak
)
1989 boolean skip_it
= false;
1990 sec
= h
->root
.u
.def
.section
;
1994 case R_SPARC_WPLT30
:
1996 case R_SPARC_HIPLT22
:
1997 case R_SPARC_LOPLT10
:
1998 case R_SPARC_PCPLT32
:
1999 case R_SPARC_PCPLT22
:
2000 case R_SPARC_PCPLT10
:
2002 if (h
->plt
.offset
!= (bfd_vma
) -1)
2009 if (elf_hash_table(info
)->dynamic_sections_created
2011 || (!info
->symbolic
&& h
->dynindx
!= -1)
2012 || !(h
->elf_link_hash_flags
2013 & ELF_LINK_HASH_DEF_REGULAR
)))
2019 case R_SPARC_PC_HH22
:
2020 case R_SPARC_PC_HM10
:
2021 case R_SPARC_PC_LM22
:
2022 if (!strcmp(h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_"))
2030 case R_SPARC_DISP16
:
2031 case R_SPARC_DISP32
:
2032 case R_SPARC_WDISP30
:
2033 case R_SPARC_WDISP22
:
2046 case R_SPARC_WDISP19
:
2047 case R_SPARC_WDISP16
:
2051 case R_SPARC_DISP64
:
2060 && ((!info
->symbolic
&& h
->dynindx
!= -1)
2061 || !(h
->elf_link_hash_flags
2062 & ELF_LINK_HASH_DEF_REGULAR
))
2063 && ((input_section
->flags
& SEC_ALLOC
) != 0
2064 /* DWARF will emit R_SPARC_{32,64} relocations in
2065 its sections against symbols defined externally
2066 in shared libraries. We can't do anything
2068 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
2069 && (h
->elf_link_hash_flags
2070 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0)))
2077 /* In these cases, we don't need the relocation
2078 value. We check specially because in some
2079 obscure cases sec->output_section will be NULL. */
2084 relocation
= (h
->root
.u
.def
.value
2085 + sec
->output_section
->vma
2086 + sec
->output_offset
);
2089 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2091 else if (info
->shared
2092 && (!info
->symbolic
|| info
->allow_shlib_undefined
)
2093 && !info
->no_undefined
2094 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2098 if (! ((*info
->callbacks
->undefined_symbol
)
2099 (info
, h
->root
.root
.string
, input_bfd
,
2100 input_section
, rel
->r_offset
,
2101 (!info
->shared
|| info
->no_undefined
2102 || ELF_ST_VISIBILITY (h
->other
)))))
2105 /* To avoid generating warning messages about truncated
2106 relocations, set the relocation's address to be the same as
2107 the start of this section. */
2109 if (input_section
->output_section
!= NULL
)
2110 relocation
= input_section
->output_section
->vma
;
2117 /* When generating a shared object, these relocations are copied
2118 into the output file to be resolved at run time. */
2119 if (info
->shared
&& r_symndx
!= 0 && (input_section
->flags
& SEC_ALLOC
))
2125 case R_SPARC_PC_HH22
:
2126 case R_SPARC_PC_HM10
:
2127 case R_SPARC_PC_LM22
:
2129 && !strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_"))
2133 case R_SPARC_DISP16
:
2134 case R_SPARC_DISP32
:
2135 case R_SPARC_WDISP30
:
2136 case R_SPARC_WDISP22
:
2137 case R_SPARC_WDISP19
:
2138 case R_SPARC_WDISP16
:
2139 case R_SPARC_DISP64
:
2169 Elf_Internal_Rela outrel
;
2175 (bfd_elf_string_from_elf_section
2177 elf_elfheader (input_bfd
)->e_shstrndx
,
2178 elf_section_data (input_section
)->rel_hdr
.sh_name
));
2183 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
2184 && strcmp (bfd_get_section_name(input_bfd
,
2188 sreloc
= bfd_get_section_by_name (dynobj
, name
);
2189 BFD_ASSERT (sreloc
!= NULL
);
2195 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2197 if (outrel
.r_offset
== (bfd_vma
) -1)
2200 outrel
.r_offset
+= (input_section
->output_section
->vma
2201 + input_section
->output_offset
);
2203 /* Optimize unaligned reloc usage now that we know where
2204 it finally resides. */
2208 if (outrel
.r_offset
& 1) r_type
= R_SPARC_UA16
;
2211 if (!(outrel
.r_offset
& 1)) r_type
= R_SPARC_16
;
2214 if (outrel
.r_offset
& 3) r_type
= R_SPARC_UA32
;
2217 if (!(outrel
.r_offset
& 3)) r_type
= R_SPARC_32
;
2220 if (outrel
.r_offset
& 7) r_type
= R_SPARC_UA64
;
2223 if (!(outrel
.r_offset
& 7)) r_type
= R_SPARC_64
;
2228 memset (&outrel
, 0, sizeof outrel
);
2229 /* h->dynindx may be -1 if the symbol was marked to
2231 else if (h
!= NULL
&& ! is_plt
2232 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2233 || (h
->elf_link_hash_flags
2234 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
2236 BFD_ASSERT (h
->dynindx
!= -1);
2238 = ELF64_R_INFO (h
->dynindx
,
2240 ELF64_R_TYPE_DATA (rel
->r_info
),
2242 outrel
.r_addend
= rel
->r_addend
;
2246 if (r_type
== R_SPARC_64
)
2248 outrel
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2249 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2258 sec
= local_sections
[r_symndx
];
2261 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2263 == bfd_link_hash_defweak
));
2264 sec
= h
->root
.u
.def
.section
;
2266 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
2268 else if (sec
== NULL
|| sec
->owner
== NULL
)
2270 bfd_set_error (bfd_error_bad_value
);
2277 osec
= sec
->output_section
;
2278 indx
= elf_section_data (osec
)->dynindx
;
2280 /* FIXME: we really should be able to link non-pic
2281 shared libraries. */
2285 (*_bfd_error_handler
)
2286 (_("%s: probably compiled without -fPIC?"),
2287 bfd_archive_filename (input_bfd
));
2288 bfd_set_error (bfd_error_bad_value
);
2294 = ELF64_R_INFO (indx
,
2296 ELF64_R_TYPE_DATA (rel
->r_info
),
2298 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2302 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
,
2303 (((Elf64_External_Rela
*)
2305 + sreloc
->reloc_count
));
2306 ++sreloc
->reloc_count
;
2308 /* This reloc will be computed at runtime, so there's no
2309 need to do anything now. */
2321 /* Relocation is to the entry for this symbol in the global
2325 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2326 BFD_ASSERT (sgot
!= NULL
);
2331 bfd_vma off
= h
->got
.offset
;
2332 BFD_ASSERT (off
!= (bfd_vma
) -1);
2334 if (! elf_hash_table (info
)->dynamic_sections_created
2336 && (info
->symbolic
|| h
->dynindx
== -1)
2337 && (h
->elf_link_hash_flags
2338 & ELF_LINK_HASH_DEF_REGULAR
)))
2340 /* This is actually a static link, or it is a -Bsymbolic
2341 link and the symbol is defined locally, or the symbol
2342 was forced to be local because of a version file. We
2343 must initialize this entry in the global offset table.
2344 Since the offset must always be a multiple of 8, we
2345 use the least significant bit to record whether we
2346 have initialized it already.
2348 When doing a dynamic link, we create a .rela.got
2349 relocation entry to initialize the value. This is
2350 done in the finish_dynamic_symbol routine. */
2356 bfd_put_64 (output_bfd
, relocation
,
2357 sgot
->contents
+ off
);
2361 relocation
= sgot
->output_offset
+ off
- got_base
;
2367 BFD_ASSERT (local_got_offsets
!= NULL
);
2368 off
= local_got_offsets
[r_symndx
];
2369 BFD_ASSERT (off
!= (bfd_vma
) -1);
2371 /* The offset must always be a multiple of 8. We use
2372 the least significant bit to record whether we have
2373 already processed this entry. */
2378 local_got_offsets
[r_symndx
] |= 1;
2383 Elf_Internal_Rela outrel
;
2385 /* The Solaris 2.7 64-bit linker adds the contents
2386 of the location to the value of the reloc.
2387 Note this is different behaviour to the
2388 32-bit linker, which both adds the contents
2389 and ignores the addend. So clear the location. */
2390 bfd_put_64 (output_bfd
, (bfd_vma
) 0,
2391 sgot
->contents
+ off
);
2393 /* We need to generate a R_SPARC_RELATIVE reloc
2394 for the dynamic linker. */
2395 srelgot
= bfd_get_section_by_name(dynobj
, ".rela.got");
2396 BFD_ASSERT (srelgot
!= NULL
);
2398 outrel
.r_offset
= (sgot
->output_section
->vma
2399 + sgot
->output_offset
2401 outrel
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2402 outrel
.r_addend
= relocation
;
2403 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
,
2404 (((Elf64_External_Rela
*)
2406 + srelgot
->reloc_count
));
2407 ++srelgot
->reloc_count
;
2410 bfd_put_64 (output_bfd
, relocation
, sgot
->contents
+ off
);
2412 relocation
= sgot
->output_offset
+ off
- got_base
;
2416 case R_SPARC_WPLT30
:
2418 case R_SPARC_HIPLT22
:
2419 case R_SPARC_LOPLT10
:
2420 case R_SPARC_PCPLT32
:
2421 case R_SPARC_PCPLT22
:
2422 case R_SPARC_PCPLT10
:
2424 /* Relocation is to the entry for this symbol in the
2425 procedure linkage table. */
2426 BFD_ASSERT (h
!= NULL
);
2428 if (h
->plt
.offset
== (bfd_vma
) -1)
2430 /* We didn't make a PLT entry for this symbol. This
2431 happens when statically linking PIC code, or when
2432 using -Bsymbolic. */
2438 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2439 BFD_ASSERT (splt
!= NULL
);
2442 relocation
= (splt
->output_section
->vma
2443 + splt
->output_offset
2444 + sparc64_elf_plt_entry_offset (h
->plt
.offset
));
2445 if (r_type
== R_SPARC_WPLT30
)
2447 if (r_type
== R_SPARC_PLT32
|| r_type
== R_SPARC_PLT64
)
2449 r_type
= r_type
== R_SPARC_PLT32
? R_SPARC_32
: R_SPARC_64
;
2459 relocation
+= rel
->r_addend
;
2460 relocation
= (relocation
& 0x3ff) + ELF64_R_TYPE_DATA (rel
->r_info
);
2462 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2463 x
= (x
& ~(bfd_vma
) 0x1fff) | (relocation
& 0x1fff);
2464 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2466 r
= bfd_check_overflow (howto
->complain_on_overflow
,
2467 howto
->bitsize
, howto
->rightshift
,
2468 bfd_arch_bits_per_address (input_bfd
),
2473 case R_SPARC_WDISP16
:
2477 relocation
+= rel
->r_addend
;
2478 /* Adjust for pc-relative-ness. */
2479 relocation
-= (input_section
->output_section
->vma
2480 + input_section
->output_offset
);
2481 relocation
-= rel
->r_offset
;
2483 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2484 x
&= ~(bfd_vma
) 0x303fff;
2485 x
|= ((((relocation
>> 2) & 0xc000) << 6)
2486 | ((relocation
>> 2) & 0x3fff));
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
^ MINUS_ONE
;
2503 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2504 x
= (x
& ~(bfd_vma
) 0x3fffff) | ((relocation
>> 10) & 0x3fffff);
2505 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2507 r
= bfd_check_overflow (howto
->complain_on_overflow
,
2508 howto
->bitsize
, howto
->rightshift
,
2509 bfd_arch_bits_per_address (input_bfd
),
2518 relocation
+= rel
->r_addend
;
2519 relocation
= (relocation
& 0x3ff) | 0x1c00;
2521 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2522 x
= (x
& ~(bfd_vma
) 0x1fff) | relocation
;
2523 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2529 case R_SPARC_WDISP30
:
2531 if (SEC_DO_RELAX (input_section
)
2532 && rel
->r_offset
+ 4 < input_section
->_raw_size
)
2536 #define XCC (2 << 20)
2537 #define COND(x) (((x)&0xf)<<25)
2538 #define CONDA COND(0x8)
2539 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2540 #define INSN_BA (F2(0,2) | CONDA)
2541 #define INSN_OR F3(2, 0x2, 0)
2542 #define INSN_NOP F2(0,4)
2546 /* If the instruction is a call with either:
2548 arithmetic instruction with rd == %o7
2549 where rs1 != %o7 and rs2 if it is register != %o7
2550 then we can optimize if the call destination is near
2551 by changing the call into a branch always. */
2552 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2553 y
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2554 if ((x
& OP(~0)) == OP(1) && (y
& OP(~0)) == OP(2))
2556 if (((y
& OP3(~0)) == OP3(0x3d) /* restore */
2557 || ((y
& OP3(0x28)) == 0 /* arithmetic */
2558 && (y
& RD(~0)) == RD(O7
)))
2559 && (y
& RS1(~0)) != RS1(O7
)
2561 || (y
& RS2(~0)) != RS2(O7
)))
2565 reloc
= relocation
+ rel
->r_addend
- rel
->r_offset
;
2566 reloc
-= (input_section
->output_section
->vma
2567 + input_section
->output_offset
);
2571 /* Ensure the branch fits into simm22. */
2572 if ((reloc
& ~(bfd_vma
)0x7fffff)
2573 && ((reloc
| 0x7fffff) != MINUS_ONE
))
2577 /* Check whether it fits into simm19. */
2578 if ((reloc
& 0x3c0000) == 0
2579 || (reloc
& 0x3c0000) == 0x3c0000)
2580 x
= INSN_BPA
| (reloc
& 0x7ffff); /* ba,pt %xcc */
2582 x
= INSN_BA
| (reloc
& 0x3fffff); /* ba */
2583 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2585 if (rel
->r_offset
>= 4
2586 && (y
& (0xffffffff ^ RS1(~0)))
2587 == (INSN_OR
| RD(O7
) | RS2(G0
)))
2592 z
= bfd_get_32 (input_bfd
,
2593 contents
+ rel
->r_offset
- 4);
2594 if ((z
& (0xffffffff ^ RD(~0)))
2595 != (INSN_OR
| RS1(O7
) | RS2(G0
)))
2603 If call foo was replaced with ba, replace
2604 or %rN, %g0, %o7 with nop. */
2606 reg
= (y
& RS1(~0)) >> 14;
2607 if (reg
!= ((z
& RD(~0)) >> 25)
2608 || reg
== G0
|| reg
== O7
)
2611 bfd_put_32 (input_bfd
, (bfd_vma
) INSN_NOP
,
2612 contents
+ rel
->r_offset
+ 4);
2622 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2623 contents
, rel
->r_offset
,
2624 relocation
, rel
->r_addend
);
2634 case bfd_reloc_outofrange
:
2637 case bfd_reloc_overflow
:
2641 /* The Solaris native linker silently disregards
2642 overflows. We don't, but this breaks stabs debugging
2643 info, whose relocations are only 32-bits wide. Ignore
2644 overflows in this case. */
2645 if (r_type
== R_SPARC_32
2646 && (input_section
->flags
& SEC_DEBUGGING
) != 0
2647 && strcmp (bfd_section_name (input_bfd
, input_section
),
2653 if (h
->root
.type
== bfd_link_hash_undefweak
2654 && howto
->pc_relative
)
2656 /* Assume this is a call protected by other code that
2657 detect the symbol is undefined. If this is the case,
2658 we can safely ignore the overflow. If not, the
2659 program is hosed anyway, and a little warning isn't
2664 name
= h
->root
.root
.string
;
2668 name
= (bfd_elf_string_from_elf_section
2670 symtab_hdr
->sh_link
,
2675 name
= bfd_section_name (input_bfd
, sec
);
2677 if (! ((*info
->callbacks
->reloc_overflow
)
2678 (info
, name
, howto
->name
, (bfd_vma
) 0,
2679 input_bfd
, input_section
, rel
->r_offset
)))
2689 /* Finish up dynamic symbol handling. We set the contents of various
2690 dynamic sections here. */
2693 sparc64_elf_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
2695 struct bfd_link_info
*info
;
2696 struct elf_link_hash_entry
*h
;
2697 Elf_Internal_Sym
*sym
;
2701 dynobj
= elf_hash_table (info
)->dynobj
;
2703 if (h
->plt
.offset
!= (bfd_vma
) -1)
2707 Elf_Internal_Rela rela
;
2709 /* This symbol has an entry in the PLT. Set it up. */
2711 BFD_ASSERT (h
->dynindx
!= -1);
2713 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2714 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
2715 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
);
2717 /* Fill in the entry in the .rela.plt section. */
2719 if (h
->plt
.offset
< LARGE_PLT_THRESHOLD
)
2721 rela
.r_offset
= sparc64_elf_plt_entry_offset (h
->plt
.offset
);
2726 bfd_vma max
= splt
->_raw_size
/ PLT_ENTRY_SIZE
;
2727 rela
.r_offset
= sparc64_elf_plt_ptr_offset (h
->plt
.offset
, max
);
2728 rela
.r_addend
= -(sparc64_elf_plt_entry_offset (h
->plt
.offset
) + 4)
2729 -(splt
->output_section
->vma
+ splt
->output_offset
);
2731 rela
.r_offset
+= (splt
->output_section
->vma
+ splt
->output_offset
);
2732 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_JMP_SLOT
);
2734 /* Adjust for the first 4 reserved elements in the .plt section
2735 when setting the offset in the .rela.plt section.
2736 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
2737 thus .plt[4] has corresponding .rela.plt[0] and so on. */
2739 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2740 ((Elf64_External_Rela
*) srela
->contents
2741 + (h
->plt
.offset
- 4)));
2743 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
2745 /* Mark the symbol as undefined, rather than as defined in
2746 the .plt section. Leave the value alone. */
2747 sym
->st_shndx
= SHN_UNDEF
;
2748 /* If the symbol is weak, we do need to clear the value.
2749 Otherwise, the PLT entry would provide a definition for
2750 the symbol even if the symbol wasn't defined anywhere,
2751 and so the symbol would never be NULL. */
2752 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR_NONWEAK
)
2758 if (h
->got
.offset
!= (bfd_vma
) -1)
2762 Elf_Internal_Rela rela
;
2764 /* This symbol has an entry in the GOT. Set it up. */
2766 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2767 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
2768 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
2770 rela
.r_offset
= (sgot
->output_section
->vma
2771 + sgot
->output_offset
2772 + (h
->got
.offset
&~ (bfd_vma
) 1));
2774 /* If this is a -Bsymbolic link, and the symbol is defined
2775 locally, we just want to emit a RELATIVE reloc. Likewise if
2776 the symbol was forced to be local because of a version file.
2777 The entry in the global offset table will already have been
2778 initialized in the relocate_section function. */
2780 && (info
->symbolic
|| h
->dynindx
== -1)
2781 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
2783 asection
*sec
= h
->root
.u
.def
.section
;
2784 rela
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2785 rela
.r_addend
= (h
->root
.u
.def
.value
2786 + sec
->output_section
->vma
2787 + sec
->output_offset
);
2791 bfd_put_64 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
2792 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_GLOB_DAT
);
2796 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2797 ((Elf64_External_Rela
*) srela
->contents
2798 + srela
->reloc_count
));
2799 ++srela
->reloc_count
;
2802 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
2805 Elf_Internal_Rela rela
;
2807 /* This symbols needs a copy reloc. Set it up. */
2809 BFD_ASSERT (h
->dynindx
!= -1);
2811 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
2813 BFD_ASSERT (s
!= NULL
);
2815 rela
.r_offset
= (h
->root
.u
.def
.value
2816 + h
->root
.u
.def
.section
->output_section
->vma
2817 + h
->root
.u
.def
.section
->output_offset
);
2818 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_COPY
);
2820 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2821 ((Elf64_External_Rela
*) s
->contents
2826 /* Mark some specially defined symbols as absolute. */
2827 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
2828 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
2829 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2830 sym
->st_shndx
= SHN_ABS
;
2835 /* Finish up the dynamic sections. */
2838 sparc64_elf_finish_dynamic_sections (output_bfd
, info
)
2840 struct bfd_link_info
*info
;
2843 int stt_regidx
= -1;
2847 dynobj
= elf_hash_table (info
)->dynobj
;
2849 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2851 if (elf_hash_table (info
)->dynamic_sections_created
)
2854 Elf64_External_Dyn
*dyncon
, *dynconend
;
2856 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2857 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
2859 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
2860 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2861 for (; dyncon
< dynconend
; dyncon
++)
2863 Elf_Internal_Dyn dyn
;
2867 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2871 case DT_PLTGOT
: name
= ".plt"; size
= false; break;
2872 case DT_PLTRELSZ
: name
= ".rela.plt"; size
= true; break;
2873 case DT_JMPREL
: name
= ".rela.plt"; size
= false; break;
2874 case DT_SPARC_REGISTER
:
2875 if (stt_regidx
== -1)
2878 _bfd_elf_link_lookup_local_dynindx (info
, output_bfd
, -1);
2879 if (stt_regidx
== -1)
2882 dyn
.d_un
.d_val
= stt_regidx
++;
2883 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2885 default: name
= NULL
; size
= false; break;
2892 s
= bfd_get_section_by_name (output_bfd
, name
);
2898 dyn
.d_un
.d_ptr
= s
->vma
;
2901 if (s
->_cooked_size
!= 0)
2902 dyn
.d_un
.d_val
= s
->_cooked_size
;
2904 dyn
.d_un
.d_val
= s
->_raw_size
;
2907 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2911 /* Initialize the contents of the .plt section. */
2912 if (splt
->_raw_size
> 0)
2914 sparc64_elf_build_plt (output_bfd
, splt
->contents
,
2915 (int) (splt
->_raw_size
/ PLT_ENTRY_SIZE
));
2918 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
2922 /* Set the first entry in the global offset table to the address of
2923 the dynamic section. */
2924 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2925 BFD_ASSERT (sgot
!= NULL
);
2926 if (sgot
->_raw_size
> 0)
2929 bfd_put_64 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
2931 bfd_put_64 (output_bfd
,
2932 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2936 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
2941 static enum elf_reloc_type_class
2942 sparc64_elf_reloc_type_class (rela
)
2943 const Elf_Internal_Rela
*rela
;
2945 switch ((int) ELF64_R_TYPE (rela
->r_info
))
2947 case R_SPARC_RELATIVE
:
2948 return reloc_class_relative
;
2949 case R_SPARC_JMP_SLOT
:
2950 return reloc_class_plt
;
2952 return reloc_class_copy
;
2954 return reloc_class_normal
;
2958 /* Functions for dealing with the e_flags field. */
2960 /* Merge backend specific data from an object file to the output
2961 object file when linking. */
2964 sparc64_elf_merge_private_bfd_data (ibfd
, obfd
)
2969 flagword new_flags
, old_flags
;
2972 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2973 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2976 new_flags
= elf_elfheader (ibfd
)->e_flags
;
2977 old_flags
= elf_elfheader (obfd
)->e_flags
;
2979 if (!elf_flags_init (obfd
)) /* First call, no flags set */
2981 elf_flags_init (obfd
) = true;
2982 elf_elfheader (obfd
)->e_flags
= new_flags
;
2985 else if (new_flags
== old_flags
) /* Compatible flags are ok */
2988 else /* Incompatible flags */
2992 #define EF_SPARC_ISA_EXTENSIONS \
2993 (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1)
2995 if ((ibfd
->flags
& DYNAMIC
) != 0)
2997 /* We don't want dynamic objects memory ordering and
2998 architecture to have any role. That's what dynamic linker
3000 new_flags
&= ~(EF_SPARCV9_MM
| EF_SPARC_ISA_EXTENSIONS
);
3001 new_flags
|= (old_flags
3002 & (EF_SPARCV9_MM
| EF_SPARC_ISA_EXTENSIONS
));
3006 /* Choose the highest architecture requirements. */
3007 old_flags
|= (new_flags
& EF_SPARC_ISA_EXTENSIONS
);
3008 new_flags
|= (old_flags
& EF_SPARC_ISA_EXTENSIONS
);
3009 if ((old_flags
& (EF_SPARC_SUN_US1
| EF_SPARC_SUN_US3
))
3010 && (old_flags
& EF_SPARC_HAL_R1
))
3013 (*_bfd_error_handler
)
3014 (_("%s: linking UltraSPARC specific with HAL specific code"),
3015 bfd_archive_filename (ibfd
));
3017 /* Choose the most restrictive memory ordering. */
3018 old_mm
= (old_flags
& EF_SPARCV9_MM
);
3019 new_mm
= (new_flags
& EF_SPARCV9_MM
);
3020 old_flags
&= ~EF_SPARCV9_MM
;
3021 new_flags
&= ~EF_SPARCV9_MM
;
3022 if (new_mm
< old_mm
)
3024 old_flags
|= old_mm
;
3025 new_flags
|= old_mm
;
3028 /* Warn about any other mismatches */
3029 if (new_flags
!= old_flags
)
3032 (*_bfd_error_handler
)
3033 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
3034 bfd_archive_filename (ibfd
), (long) new_flags
, (long) old_flags
);
3037 elf_elfheader (obfd
)->e_flags
= old_flags
;
3041 bfd_set_error (bfd_error_bad_value
);
3048 /* Print a STT_REGISTER symbol to file FILE. */
3051 sparc64_elf_print_symbol_all (abfd
, filep
, symbol
)
3052 bfd
*abfd ATTRIBUTE_UNUSED
;
3056 FILE *file
= (FILE *) filep
;
3059 if (ELF_ST_TYPE (((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_info
)
3063 reg
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
;
3064 type
= symbol
->flags
;
3065 fprintf (file
, "REG_%c%c%11s%c%c R", "GOLI" [reg
/ 8], '0' + (reg
& 7), "",
3067 ? (type
& BSF_GLOBAL
) ? '!' : 'l'
3068 : (type
& BSF_GLOBAL
) ? 'g' : ' '),
3069 (type
& BSF_WEAK
) ? 'w' : ' ');
3070 if (symbol
->name
== NULL
|| symbol
->name
[0] == '\0')
3073 return symbol
->name
;
3076 /* Set the right machine number for a SPARC64 ELF file. */
3079 sparc64_elf_object_p (abfd
)
3082 unsigned long mach
= bfd_mach_sparc_v9
;
3084 if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US3
)
3085 mach
= bfd_mach_sparc_v9b
;
3086 else if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US1
)
3087 mach
= bfd_mach_sparc_v9a
;
3088 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
, mach
);
3091 /* Relocations in the 64 bit SPARC ELF ABI are more complex than in
3092 standard ELF, because R_SPARC_OLO10 has secondary addend in
3093 ELF64_R_TYPE_DATA field. This structure is used to redirect the
3094 relocation handling routines. */
3096 const struct elf_size_info sparc64_elf_size_info
=
3098 sizeof (Elf64_External_Ehdr
),
3099 sizeof (Elf64_External_Phdr
),
3100 sizeof (Elf64_External_Shdr
),
3101 sizeof (Elf64_External_Rel
),
3102 sizeof (Elf64_External_Rela
),
3103 sizeof (Elf64_External_Sym
),
3104 sizeof (Elf64_External_Dyn
),
3105 sizeof (Elf_External_Note
),
3106 4, /* hash-table entry size */
3107 /* internal relocations per external relocations.
3108 For link purposes we use just 1 internal per
3109 1 external, for assembly and slurp symbol table
3116 bfd_elf64_write_out_phdrs
,
3117 bfd_elf64_write_shdrs_and_ehdr
,
3118 sparc64_elf_write_relocs
,
3119 bfd_elf64_swap_symbol_out
,
3120 sparc64_elf_slurp_reloc_table
,
3121 bfd_elf64_slurp_symbol_table
,
3122 bfd_elf64_swap_dyn_in
,
3123 bfd_elf64_swap_dyn_out
,
3130 #define TARGET_BIG_SYM bfd_elf64_sparc_vec
3131 #define TARGET_BIG_NAME "elf64-sparc"
3132 #define ELF_ARCH bfd_arch_sparc
3133 #define ELF_MAXPAGESIZE 0x100000
3135 /* This is the official ABI value. */
3136 #define ELF_MACHINE_CODE EM_SPARCV9
3138 /* This is the value that we used before the ABI was released. */
3139 #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9
3141 #define bfd_elf64_bfd_link_hash_table_create \
3142 sparc64_elf_bfd_link_hash_table_create
3144 #define elf_info_to_howto \
3145 sparc64_elf_info_to_howto
3146 #define bfd_elf64_get_reloc_upper_bound \
3147 sparc64_elf_get_reloc_upper_bound
3148 #define bfd_elf64_get_dynamic_reloc_upper_bound \
3149 sparc64_elf_get_dynamic_reloc_upper_bound
3150 #define bfd_elf64_canonicalize_dynamic_reloc \
3151 sparc64_elf_canonicalize_dynamic_reloc
3152 #define bfd_elf64_bfd_reloc_type_lookup \
3153 sparc64_elf_reloc_type_lookup
3154 #define bfd_elf64_bfd_relax_section \
3155 sparc64_elf_relax_section
3157 #define elf_backend_create_dynamic_sections \
3158 _bfd_elf_create_dynamic_sections
3159 #define elf_backend_add_symbol_hook \
3160 sparc64_elf_add_symbol_hook
3161 #define elf_backend_get_symbol_type \
3162 sparc64_elf_get_symbol_type
3163 #define elf_backend_symbol_processing \
3164 sparc64_elf_symbol_processing
3165 #define elf_backend_check_relocs \
3166 sparc64_elf_check_relocs
3167 #define elf_backend_adjust_dynamic_symbol \
3168 sparc64_elf_adjust_dynamic_symbol
3169 #define elf_backend_size_dynamic_sections \
3170 sparc64_elf_size_dynamic_sections
3171 #define elf_backend_relocate_section \
3172 sparc64_elf_relocate_section
3173 #define elf_backend_finish_dynamic_symbol \
3174 sparc64_elf_finish_dynamic_symbol
3175 #define elf_backend_finish_dynamic_sections \
3176 sparc64_elf_finish_dynamic_sections
3177 #define elf_backend_print_symbol_all \
3178 sparc64_elf_print_symbol_all
3179 #define elf_backend_output_arch_syms \
3180 sparc64_elf_output_arch_syms
3181 #define bfd_elf64_bfd_merge_private_bfd_data \
3182 sparc64_elf_merge_private_bfd_data
3184 #define elf_backend_size_info \
3185 sparc64_elf_size_info
3186 #define elf_backend_object_p \
3187 sparc64_elf_object_p
3188 #define elf_backend_reloc_type_class \
3189 sparc64_elf_reloc_type_class
3191 #define elf_backend_want_got_plt 0
3192 #define elf_backend_plt_readonly 0
3193 #define elf_backend_want_plt_sym 1
3195 /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */
3196 #define elf_backend_plt_alignment 8
3198 #define elf_backend_got_header_size 8
3199 #define elf_backend_plt_header_size PLT_HEADER_SIZE
3201 #include "elf64-target.h"