1 /* SPARC-specific support for 64-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
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_zmalloc (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
))
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 is 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, previously %s in %s"),
1335 (int) sym
->st_value
,
1336 **namep
? *namep
: "#scratch", bfd_archive_filename (abfd
),
1337 *p
->name
? p
->name
: "#scratch", bfd_archive_filename (p
->abfd
));
1341 if (p
->name
== NULL
)
1345 struct elf_link_hash_entry
*h
;
1347 h
= (struct elf_link_hash_entry
*)
1348 bfd_link_hash_lookup (info
->hash
, *namep
, false, false, false);
1352 unsigned char type
= h
->type
;
1354 if (type
> STT_FUNC
)
1356 (*_bfd_error_handler
)
1357 (_("Symbol `%s' has differing types: REGISTER in %s, previously %s in %s"),
1358 *namep
, bfd_archive_filename (abfd
),
1359 stt_types
[type
], bfd_archive_filename (p
->abfd
));
1363 p
->name
= bfd_hash_allocate (&info
->hash
->table
,
1364 strlen (*namep
) + 1);
1368 strcpy (p
->name
, *namep
);
1372 p
->bind
= ELF_ST_BIND (sym
->st_info
);
1374 p
->shndx
= sym
->st_shndx
;
1378 if (p
->bind
== STB_WEAK
1379 && ELF_ST_BIND (sym
->st_info
) == STB_GLOBAL
)
1381 p
->bind
= STB_GLOBAL
;
1388 else if (*namep
&& **namep
1389 && info
->hash
->creator
== abfd
->xvec
)
1392 struct sparc64_elf_app_reg
*p
;
1394 p
= sparc64_elf_hash_table(info
)->app_regs
;
1395 for (i
= 0; i
< 4; i
++, p
++)
1396 if (p
->name
!= NULL
&& ! strcmp (p
->name
, *namep
))
1398 unsigned char type
= ELF_ST_TYPE (sym
->st_info
);
1400 if (type
> STT_FUNC
)
1402 (*_bfd_error_handler
)
1403 (_("Symbol `%s' has differing types: %s in %s, previously REGISTER in %s"),
1404 *namep
, stt_types
[type
], bfd_archive_filename (abfd
),
1405 bfd_archive_filename (p
->abfd
));
1412 /* This function takes care of emiting STT_REGISTER symbols
1413 which we cannot easily keep in the symbol hash table. */
1416 sparc64_elf_output_arch_syms (output_bfd
, info
, finfo
, func
)
1417 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1418 struct bfd_link_info
*info
;
1420 boolean (*func
) PARAMS ((PTR
, const char *,
1421 Elf_Internal_Sym
*, asection
*));
1424 struct sparc64_elf_app_reg
*app_regs
=
1425 sparc64_elf_hash_table(info
)->app_regs
;
1426 Elf_Internal_Sym sym
;
1428 /* We arranged in size_dynamic_sections to put the STT_REGISTER entries
1429 at the end of the dynlocal list, so they came at the end of the local
1430 symbols in the symtab. Except that they aren't STB_LOCAL, so we need
1431 to back up symtab->sh_info. */
1432 if (elf_hash_table (info
)->dynlocal
)
1434 bfd
* dynobj
= elf_hash_table (info
)->dynobj
;
1435 asection
*dynsymsec
= bfd_get_section_by_name (dynobj
, ".dynsym");
1436 struct elf_link_local_dynamic_entry
*e
;
1438 for (e
= elf_hash_table (info
)->dynlocal
; e
; e
= e
->next
)
1439 if (e
->input_indx
== -1)
1443 elf_section_data (dynsymsec
->output_section
)->this_hdr
.sh_info
1448 if (info
->strip
== strip_all
)
1451 for (reg
= 0; reg
< 4; reg
++)
1452 if (app_regs
[reg
].name
!= NULL
)
1454 if (info
->strip
== strip_some
1455 && bfd_hash_lookup (info
->keep_hash
,
1456 app_regs
[reg
].name
,
1457 false, false) == NULL
)
1460 sym
.st_value
= reg
< 2 ? reg
+ 2 : reg
+ 4;
1463 sym
.st_info
= ELF_ST_INFO (app_regs
[reg
].bind
, STT_REGISTER
);
1464 sym
.st_shndx
= app_regs
[reg
].shndx
;
1465 if (! (*func
) (finfo
, app_regs
[reg
].name
, &sym
,
1466 sym
.st_shndx
== SHN_ABS
1467 ? bfd_abs_section_ptr
: bfd_und_section_ptr
))
1475 sparc64_elf_get_symbol_type (elf_sym
, type
)
1476 Elf_Internal_Sym
* elf_sym
;
1479 if (ELF_ST_TYPE (elf_sym
->st_info
) == STT_REGISTER
)
1480 return STT_REGISTER
;
1485 /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL
1486 even in SHN_UNDEF section. */
1489 sparc64_elf_symbol_processing (abfd
, asym
)
1490 bfd
*abfd ATTRIBUTE_UNUSED
;
1493 elf_symbol_type
*elfsym
;
1495 elfsym
= (elf_symbol_type
*) asym
;
1496 if (elfsym
->internal_elf_sym
.st_info
1497 == ELF_ST_INFO (STB_GLOBAL
, STT_REGISTER
))
1499 asym
->flags
|= BSF_GLOBAL
;
1503 /* Adjust a symbol defined by a dynamic object and referenced by a
1504 regular object. The current definition is in some section of the
1505 dynamic object, but we're not including those sections. We have to
1506 change the definition to something the rest of the link can
1510 sparc64_elf_adjust_dynamic_symbol (info
, h
)
1511 struct bfd_link_info
*info
;
1512 struct elf_link_hash_entry
*h
;
1516 unsigned int power_of_two
;
1518 dynobj
= elf_hash_table (info
)->dynobj
;
1520 /* Make sure we know what is going on here. */
1521 BFD_ASSERT (dynobj
!= NULL
1522 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
1523 || h
->weakdef
!= NULL
1524 || ((h
->elf_link_hash_flags
1525 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
1526 && (h
->elf_link_hash_flags
1527 & ELF_LINK_HASH_REF_REGULAR
) != 0
1528 && (h
->elf_link_hash_flags
1529 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
1531 /* If this is a function, put it in the procedure linkage table. We
1532 will fill in the contents of the procedure linkage table later
1533 (although we could actually do it here). The STT_NOTYPE
1534 condition is a hack specifically for the Oracle libraries
1535 delivered for Solaris; for some inexplicable reason, they define
1536 some of their functions as STT_NOTYPE when they really should be
1538 if (h
->type
== STT_FUNC
1539 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0
1540 || (h
->type
== STT_NOTYPE
1541 && (h
->root
.type
== bfd_link_hash_defined
1542 || h
->root
.type
== bfd_link_hash_defweak
)
1543 && (h
->root
.u
.def
.section
->flags
& SEC_CODE
) != 0))
1545 if (! elf_hash_table (info
)->dynamic_sections_created
)
1547 /* This case can occur if we saw a WPLT30 reloc in an input
1548 file, but none of the input files were dynamic objects.
1549 In such a case, we don't actually need to build a
1550 procedure linkage table, and we can just do a WDISP30
1552 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
1556 s
= bfd_get_section_by_name (dynobj
, ".plt");
1557 BFD_ASSERT (s
!= NULL
);
1559 /* The first four bit in .plt is reserved. */
1560 if (s
->_raw_size
== 0)
1561 s
->_raw_size
= PLT_HEADER_SIZE
;
1563 /* If this symbol is not defined in a regular file, and we are
1564 not generating a shared library, then set the symbol to this
1565 location in the .plt. This is required to make function
1566 pointers compare as equal between the normal executable and
1567 the shared library. */
1569 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1571 h
->root
.u
.def
.section
= s
;
1572 h
->root
.u
.def
.value
= s
->_raw_size
;
1575 /* To simplify matters later, just store the plt index here. */
1576 h
->plt
.offset
= s
->_raw_size
/ PLT_ENTRY_SIZE
;
1578 /* Make room for this entry. */
1579 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1581 /* We also need to make an entry in the .rela.plt section. */
1583 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1584 BFD_ASSERT (s
!= NULL
);
1586 s
->_raw_size
+= sizeof (Elf64_External_Rela
);
1588 /* The procedure linkage table size is bounded by the magnitude
1589 of the offset we can describe in the entry. */
1590 if (s
->_raw_size
>= (bfd_vma
)1 << 32)
1592 bfd_set_error (bfd_error_bad_value
);
1599 /* If this is a weak symbol, and there is a real definition, the
1600 processor independent code will have arranged for us to see the
1601 real definition first, and we can just use the same value. */
1602 if (h
->weakdef
!= NULL
)
1604 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1605 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1606 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1607 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1611 /* This is a reference to a symbol defined by a dynamic object which
1612 is not a function. */
1614 /* If we are creating a shared library, we must presume that the
1615 only references to the symbol are via the global offset table.
1616 For such cases we need not do anything here; the relocations will
1617 be handled correctly by relocate_section. */
1621 /* We must allocate the symbol in our .dynbss section, which will
1622 become part of the .bss section of the executable. There will be
1623 an entry for this symbol in the .dynsym section. The dynamic
1624 object will contain position independent code, so all references
1625 from the dynamic object to this symbol will go through the global
1626 offset table. The dynamic linker will use the .dynsym entry to
1627 determine the address it must put in the global offset table, so
1628 both the dynamic object and the regular object will refer to the
1629 same memory location for the variable. */
1631 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1632 BFD_ASSERT (s
!= NULL
);
1634 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1635 to copy the initial value out of the dynamic object and into the
1636 runtime process image. We need to remember the offset into the
1637 .rel.bss section we are going to use. */
1638 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1642 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1643 BFD_ASSERT (srel
!= NULL
);
1644 srel
->_raw_size
+= sizeof (Elf64_External_Rela
);
1645 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1648 /* We need to figure out the alignment required for this symbol. I
1649 have no idea how ELF linkers handle this. 16-bytes is the size
1650 of the largest type that requires hard alignment -- long double. */
1651 power_of_two
= bfd_log2 (h
->size
);
1652 if (power_of_two
> 4)
1655 /* Apply the required alignment. */
1656 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1657 (bfd_size_type
) (1 << power_of_two
));
1658 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1660 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1664 /* Define the symbol as being at this point in the section. */
1665 h
->root
.u
.def
.section
= s
;
1666 h
->root
.u
.def
.value
= s
->_raw_size
;
1668 /* Increment the section size to make room for the symbol. */
1669 s
->_raw_size
+= h
->size
;
1674 /* Set the sizes of the dynamic sections. */
1677 sparc64_elf_size_dynamic_sections (output_bfd
, info
)
1679 struct bfd_link_info
*info
;
1685 dynobj
= elf_hash_table (info
)->dynobj
;
1686 BFD_ASSERT (dynobj
!= NULL
);
1688 if (elf_hash_table (info
)->dynamic_sections_created
)
1690 /* Set the contents of the .interp section to the interpreter. */
1693 s
= bfd_get_section_by_name (dynobj
, ".interp");
1694 BFD_ASSERT (s
!= NULL
);
1695 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1696 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1701 /* We may have created entries in the .rela.got section.
1702 However, if we are not creating the dynamic sections, we will
1703 not actually use these entries. Reset the size of .rela.got,
1704 which will cause it to get stripped from the output file
1706 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1711 /* The check_relocs and adjust_dynamic_symbol entry points have
1712 determined the sizes of the various dynamic sections. Allocate
1715 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1720 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1723 /* It's OK to base decisions on the section name, because none
1724 of the dynobj section names depend upon the input files. */
1725 name
= bfd_get_section_name (dynobj
, s
);
1729 if (strncmp (name
, ".rela", 5) == 0)
1731 if (s
->_raw_size
== 0)
1733 /* If we don't need this section, strip it from the
1734 output file. This is to handle .rela.bss and
1735 .rel.plt. We must create it in
1736 create_dynamic_sections, because it must be created
1737 before the linker maps input sections to output
1738 sections. The linker does that before
1739 adjust_dynamic_symbol is called, and it is that
1740 function which decides whether anything needs to go
1741 into these sections. */
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. */
1782 #define add_dynamic_entry(TAG, VAL) \
1783 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1786 struct sparc64_elf_app_reg
* app_regs
;
1787 struct elf_strtab_hash
*dynstr
;
1788 struct elf_link_hash_table
*eht
= elf_hash_table (info
);
1792 if (!add_dynamic_entry (DT_DEBUG
, 0))
1798 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1799 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
1800 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1801 || !add_dynamic_entry (DT_JMPREL
, 0))
1805 if (!add_dynamic_entry (DT_RELA
, 0)
1806 || !add_dynamic_entry (DT_RELASZ
, 0)
1807 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
1810 if (info
->flags
& DF_TEXTREL
)
1812 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1816 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
1817 entries if needed. */
1818 app_regs
= sparc64_elf_hash_table (info
)->app_regs
;
1819 dynstr
= eht
->dynstr
;
1821 for (reg
= 0; reg
< 4; reg
++)
1822 if (app_regs
[reg
].name
!= NULL
)
1824 struct elf_link_local_dynamic_entry
*entry
, *e
;
1826 if (!add_dynamic_entry (DT_SPARC_REGISTER
, 0))
1829 entry
= (struct elf_link_local_dynamic_entry
*)
1830 bfd_hash_allocate (&info
->hash
->table
, sizeof (*entry
));
1834 /* We cheat here a little bit: the symbol will not be local, so we
1835 put it at the end of the dynlocal linked list. We will fix it
1836 later on, as we have to fix other fields anyway. */
1837 entry
->isym
.st_value
= reg
< 2 ? reg
+ 2 : reg
+ 4;
1838 entry
->isym
.st_size
= 0;
1839 if (*app_regs
[reg
].name
!= '\0')
1841 = _bfd_elf_strtab_add (dynstr
, app_regs
[reg
].name
, false);
1843 entry
->isym
.st_name
= 0;
1844 entry
->isym
.st_other
= 0;
1845 entry
->isym
.st_info
= ELF_ST_INFO (app_regs
[reg
].bind
,
1847 entry
->isym
.st_shndx
= app_regs
[reg
].shndx
;
1849 entry
->input_bfd
= output_bfd
;
1850 entry
->input_indx
= -1;
1852 if (eht
->dynlocal
== NULL
)
1853 eht
->dynlocal
= entry
;
1856 for (e
= eht
->dynlocal
; e
->next
; e
= e
->next
)
1863 #undef add_dynamic_entry
1868 #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0)
1869 #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1)
1872 sparc64_elf_relax_section (abfd
, section
, link_info
, again
)
1873 bfd
*abfd ATTRIBUTE_UNUSED
;
1874 asection
*section ATTRIBUTE_UNUSED
;
1875 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
1879 SET_SEC_DO_RELAX (section
);
1883 /* This is the condition under which finish_dynamic_symbol will be called
1884 from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol
1885 routine, we'll need to do something about initializing any .plt and
1886 .got entries in relocate_section. */
1887 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1889 && ((INFO)->shared \
1890 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1891 && ((H)->dynindx != -1 \
1892 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1894 /* Relocate a SPARC64 ELF section. */
1897 sparc64_elf_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1898 contents
, relocs
, local_syms
, local_sections
)
1900 struct bfd_link_info
*info
;
1902 asection
*input_section
;
1904 Elf_Internal_Rela
*relocs
;
1905 Elf_Internal_Sym
*local_syms
;
1906 asection
**local_sections
;
1909 Elf_Internal_Shdr
*symtab_hdr
;
1910 struct elf_link_hash_entry
**sym_hashes
;
1911 bfd_vma
*local_got_offsets
;
1916 Elf_Internal_Rela
*rel
;
1917 Elf_Internal_Rela
*relend
;
1919 dynobj
= elf_hash_table (info
)->dynobj
;
1920 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1921 sym_hashes
= elf_sym_hashes (input_bfd
);
1922 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1924 if (elf_hash_table(info
)->hgot
== NULL
)
1927 got_base
= elf_hash_table (info
)->hgot
->root
.u
.def
.value
;
1929 sgot
= splt
= sreloc
= NULL
;
1932 relend
= relocs
+ NUM_SHDR_ENTRIES (& elf_section_data (input_section
)->rel_hdr
);
1933 for (; rel
< relend
; rel
++)
1936 reloc_howto_type
*howto
;
1937 unsigned long r_symndx
;
1938 struct elf_link_hash_entry
*h
;
1939 Elf_Internal_Sym
*sym
;
1941 bfd_vma relocation
, off
;
1942 bfd_reloc_status_type r
;
1943 boolean is_plt
= false;
1944 boolean unresolved_reloc
;
1946 r_type
= ELF64_R_TYPE_ID (rel
->r_info
);
1947 if (r_type
< 0 || r_type
>= (int) R_SPARC_max_std
)
1949 bfd_set_error (bfd_error_bad_value
);
1952 howto
= sparc64_elf_howto_table
+ r_type
;
1954 r_symndx
= ELF64_R_SYM (rel
->r_info
);
1956 if (info
->relocateable
)
1958 /* This is a relocateable link. We don't have to change
1959 anything, unless the reloc is against a section symbol,
1960 in which case we have to adjust according to where the
1961 section symbol winds up in the output section. */
1962 if (r_symndx
< symtab_hdr
->sh_info
)
1964 sym
= local_syms
+ r_symndx
;
1965 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
1967 sec
= local_sections
[r_symndx
];
1968 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
1975 /* This is a final link. */
1979 unresolved_reloc
= false;
1980 if (r_symndx
< symtab_hdr
->sh_info
)
1982 sym
= local_syms
+ r_symndx
;
1983 sec
= local_sections
[r_symndx
];
1984 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
1988 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1989 while (h
->root
.type
== bfd_link_hash_indirect
1990 || h
->root
.type
== bfd_link_hash_warning
)
1991 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1994 if (h
->root
.type
== bfd_link_hash_defined
1995 || h
->root
.type
== bfd_link_hash_defweak
)
1997 sec
= h
->root
.u
.def
.section
;
1998 if (sec
->output_section
== NULL
)
1999 /* Set a flag that will be cleared later if we find a
2000 relocation value for this symbol. output_section
2001 is typically NULL for symbols satisfied by a shared
2003 unresolved_reloc
= true;
2005 relocation
= (h
->root
.u
.def
.value
2006 + sec
->output_section
->vma
2007 + sec
->output_offset
);
2009 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2011 else if (info
->shared
2012 && (!info
->symbolic
|| info
->allow_shlib_undefined
)
2013 && !info
->no_undefined
2014 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2018 if (! ((*info
->callbacks
->undefined_symbol
)
2019 (info
, h
->root
.root
.string
, input_bfd
,
2020 input_section
, rel
->r_offset
,
2021 (!info
->shared
|| info
->no_undefined
2022 || ELF_ST_VISIBILITY (h
->other
)))))
2025 /* To avoid generating warning messages about truncated
2026 relocations, set the relocation's address to be the same as
2027 the start of this section. */
2029 if (input_section
->output_section
!= NULL
)
2030 relocation
= input_section
->output_section
->vma
;
2037 /* When generating a shared object, these relocations are copied
2038 into the output file to be resolved at run time. */
2039 if (info
->shared
&& r_symndx
!= 0 && (input_section
->flags
& SEC_ALLOC
))
2045 case R_SPARC_PC_HH22
:
2046 case R_SPARC_PC_HM10
:
2047 case R_SPARC_PC_LM22
:
2049 && !strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_"))
2053 case R_SPARC_DISP16
:
2054 case R_SPARC_DISP32
:
2055 case R_SPARC_DISP64
:
2056 case R_SPARC_WDISP30
:
2057 case R_SPARC_WDISP22
:
2058 case R_SPARC_WDISP19
:
2059 case R_SPARC_WDISP16
:
2089 Elf_Internal_Rela outrel
;
2090 boolean skip
, relocate
;
2095 (bfd_elf_string_from_elf_section
2097 elf_elfheader (input_bfd
)->e_shstrndx
,
2098 elf_section_data (input_section
)->rel_hdr
.sh_name
));
2103 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
2104 && strcmp (bfd_get_section_name(input_bfd
,
2108 sreloc
= bfd_get_section_by_name (dynobj
, name
);
2109 BFD_ASSERT (sreloc
!= NULL
);
2116 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2118 if (outrel
.r_offset
== (bfd_vma
) -1)
2120 else if (outrel
.r_offset
== (bfd_vma
) -2)
2121 skip
= true, relocate
= true;
2123 outrel
.r_offset
+= (input_section
->output_section
->vma
2124 + input_section
->output_offset
);
2126 /* Optimize unaligned reloc usage now that we know where
2127 it finally resides. */
2131 if (outrel
.r_offset
& 1) r_type
= R_SPARC_UA16
;
2134 if (!(outrel
.r_offset
& 1)) r_type
= R_SPARC_16
;
2137 if (outrel
.r_offset
& 3) r_type
= R_SPARC_UA32
;
2140 if (!(outrel
.r_offset
& 3)) r_type
= R_SPARC_32
;
2143 if (outrel
.r_offset
& 7) r_type
= R_SPARC_UA64
;
2146 if (!(outrel
.r_offset
& 7)) r_type
= R_SPARC_64
;
2149 case R_SPARC_DISP16
:
2150 case R_SPARC_DISP32
:
2151 case R_SPARC_DISP64
:
2152 /* If the symbol is not dynamic, we should not keep
2153 a dynamic relocation. But an .rela.* slot has been
2154 allocated for it, output R_SPARC_NONE.
2155 FIXME: Add code tracking needed dynamic relocs as
2157 if (h
->dynindx
== -1)
2158 skip
= true, relocate
= true;
2163 memset (&outrel
, 0, sizeof outrel
);
2164 /* h->dynindx may be -1 if the symbol was marked to
2166 else if (h
!= NULL
&& ! is_plt
2167 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2168 || (h
->elf_link_hash_flags
2169 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
2171 BFD_ASSERT (h
->dynindx
!= -1);
2173 = ELF64_R_INFO (h
->dynindx
,
2175 ELF64_R_TYPE_DATA (rel
->r_info
),
2177 outrel
.r_addend
= rel
->r_addend
;
2181 if (r_type
== R_SPARC_64
)
2183 outrel
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2184 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2193 sec
= local_sections
[r_symndx
];
2196 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2198 == bfd_link_hash_defweak
));
2199 sec
= h
->root
.u
.def
.section
;
2201 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
2203 else if (sec
== NULL
|| sec
->owner
== NULL
)
2205 bfd_set_error (bfd_error_bad_value
);
2212 osec
= sec
->output_section
;
2213 indx
= elf_section_data (osec
)->dynindx
;
2215 /* FIXME: we really should be able to link non-pic
2216 shared libraries. */
2220 (*_bfd_error_handler
)
2221 (_("%s: probably compiled without -fPIC?"),
2222 bfd_archive_filename (input_bfd
));
2223 bfd_set_error (bfd_error_bad_value
);
2229 = ELF64_R_INFO (indx
,
2231 ELF64_R_TYPE_DATA (rel
->r_info
),
2233 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2237 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
,
2238 (((Elf64_External_Rela
*)
2240 + sreloc
->reloc_count
));
2241 ++sreloc
->reloc_count
;
2243 /* This reloc will be computed at runtime, so there's no
2244 need to do anything now. */
2257 /* Relocation is to the entry for this symbol in the global
2261 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2262 BFD_ASSERT (sgot
!= NULL
);
2269 off
= h
->got
.offset
;
2270 BFD_ASSERT (off
!= (bfd_vma
) -1);
2271 dyn
= elf_hash_table (info
)->dynamic_sections_created
;
2273 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
, h
)
2277 || (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
))
2278 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
2280 /* This is actually a static link, or it is a -Bsymbolic
2281 link and the symbol is defined locally, or the symbol
2282 was forced to be local because of a version file. We
2283 must initialize this entry in the global offset table.
2284 Since the offset must always be a multiple of 8, we
2285 use the least significant bit to record whether we
2286 have initialized it already.
2288 When doing a dynamic link, we create a .rela.got
2289 relocation entry to initialize the value. This is
2290 done in the finish_dynamic_symbol routine. */
2296 bfd_put_64 (output_bfd
, relocation
,
2297 sgot
->contents
+ off
);
2302 unresolved_reloc
= false;
2306 BFD_ASSERT (local_got_offsets
!= NULL
);
2307 off
= local_got_offsets
[r_symndx
];
2308 BFD_ASSERT (off
!= (bfd_vma
) -1);
2310 /* The offset must always be a multiple of 8. We use
2311 the least significant bit to record whether we have
2312 already processed this entry. */
2317 local_got_offsets
[r_symndx
] |= 1;
2322 Elf_Internal_Rela outrel
;
2324 /* The Solaris 2.7 64-bit linker adds the contents
2325 of the location to the value of the reloc.
2326 Note this is different behaviour to the
2327 32-bit linker, which both adds the contents
2328 and ignores the addend. So clear the location. */
2329 bfd_put_64 (output_bfd
, (bfd_vma
) 0,
2330 sgot
->contents
+ off
);
2332 /* We need to generate a R_SPARC_RELATIVE reloc
2333 for the dynamic linker. */
2334 srelgot
= bfd_get_section_by_name(dynobj
, ".rela.got");
2335 BFD_ASSERT (srelgot
!= NULL
);
2337 outrel
.r_offset
= (sgot
->output_section
->vma
2338 + sgot
->output_offset
2340 outrel
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2341 outrel
.r_addend
= relocation
;
2342 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
,
2343 (((Elf64_External_Rela
*)
2345 + srelgot
->reloc_count
));
2346 ++srelgot
->reloc_count
;
2349 bfd_put_64 (output_bfd
, relocation
, sgot
->contents
+ off
);
2352 relocation
= sgot
->output_offset
+ off
- got_base
;
2355 case R_SPARC_WPLT30
:
2357 case R_SPARC_HIPLT22
:
2358 case R_SPARC_LOPLT10
:
2359 case R_SPARC_PCPLT32
:
2360 case R_SPARC_PCPLT22
:
2361 case R_SPARC_PCPLT10
:
2363 /* Relocation is to the entry for this symbol in the
2364 procedure linkage table. */
2365 BFD_ASSERT (h
!= NULL
);
2367 if (h
->plt
.offset
== (bfd_vma
) -1)
2369 /* We didn't make a PLT entry for this symbol. This
2370 happens when statically linking PIC code, or when
2371 using -Bsymbolic. */
2377 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2378 BFD_ASSERT (splt
!= NULL
);
2381 relocation
= (splt
->output_section
->vma
2382 + splt
->output_offset
2383 + sparc64_elf_plt_entry_offset (h
->plt
.offset
));
2384 unresolved_reloc
= false;
2385 if (r_type
== R_SPARC_WPLT30
)
2387 if (r_type
== R_SPARC_PLT32
|| r_type
== R_SPARC_PLT64
)
2389 r_type
= r_type
== R_SPARC_PLT32
? R_SPARC_32
: R_SPARC_64
;
2399 relocation
+= rel
->r_addend
;
2400 relocation
= (relocation
& 0x3ff) + ELF64_R_TYPE_DATA (rel
->r_info
);
2402 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2403 x
= (x
& ~(bfd_vma
) 0x1fff) | (relocation
& 0x1fff);
2404 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2406 r
= bfd_check_overflow (howto
->complain_on_overflow
,
2407 howto
->bitsize
, howto
->rightshift
,
2408 bfd_arch_bits_per_address (input_bfd
),
2413 case R_SPARC_WDISP16
:
2417 relocation
+= rel
->r_addend
;
2418 /* Adjust for pc-relative-ness. */
2419 relocation
-= (input_section
->output_section
->vma
2420 + input_section
->output_offset
);
2421 relocation
-= rel
->r_offset
;
2423 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2424 x
&= ~(bfd_vma
) 0x303fff;
2425 x
|= ((((relocation
>> 2) & 0xc000) << 6)
2426 | ((relocation
>> 2) & 0x3fff));
2427 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2429 r
= bfd_check_overflow (howto
->complain_on_overflow
,
2430 howto
->bitsize
, howto
->rightshift
,
2431 bfd_arch_bits_per_address (input_bfd
),
2440 relocation
+= rel
->r_addend
;
2441 relocation
= relocation
^ MINUS_ONE
;
2443 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2444 x
= (x
& ~(bfd_vma
) 0x3fffff) | ((relocation
>> 10) & 0x3fffff);
2445 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2447 r
= bfd_check_overflow (howto
->complain_on_overflow
,
2448 howto
->bitsize
, howto
->rightshift
,
2449 bfd_arch_bits_per_address (input_bfd
),
2458 relocation
+= rel
->r_addend
;
2459 relocation
= (relocation
& 0x3ff) | 0x1c00;
2461 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2462 x
= (x
& ~(bfd_vma
) 0x1fff) | relocation
;
2463 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2469 case R_SPARC_WDISP30
:
2471 if (SEC_DO_RELAX (input_section
)
2472 && rel
->r_offset
+ 4 < input_section
->_raw_size
)
2476 #define XCC (2 << 20)
2477 #define COND(x) (((x)&0xf)<<25)
2478 #define CONDA COND(0x8)
2479 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2480 #define INSN_BA (F2(0,2) | CONDA)
2481 #define INSN_OR F3(2, 0x2, 0)
2482 #define INSN_NOP F2(0,4)
2486 /* If the instruction is a call with either:
2488 arithmetic instruction with rd == %o7
2489 where rs1 != %o7 and rs2 if it is register != %o7
2490 then we can optimize if the call destination is near
2491 by changing the call into a branch always. */
2492 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2493 y
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2494 if ((x
& OP(~0)) == OP(1) && (y
& OP(~0)) == OP(2))
2496 if (((y
& OP3(~0)) == OP3(0x3d) /* restore */
2497 || ((y
& OP3(0x28)) == 0 /* arithmetic */
2498 && (y
& RD(~0)) == RD(O7
)))
2499 && (y
& RS1(~0)) != RS1(O7
)
2501 || (y
& RS2(~0)) != RS2(O7
)))
2505 reloc
= relocation
+ rel
->r_addend
- rel
->r_offset
;
2506 reloc
-= (input_section
->output_section
->vma
2507 + input_section
->output_offset
);
2511 /* Ensure the branch fits into simm22. */
2512 if ((reloc
& ~(bfd_vma
)0x7fffff)
2513 && ((reloc
| 0x7fffff) != MINUS_ONE
))
2517 /* Check whether it fits into simm19. */
2518 if ((reloc
& 0x3c0000) == 0
2519 || (reloc
& 0x3c0000) == 0x3c0000)
2520 x
= INSN_BPA
| (reloc
& 0x7ffff); /* ba,pt %xcc */
2522 x
= INSN_BA
| (reloc
& 0x3fffff); /* ba */
2523 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
2525 if (rel
->r_offset
>= 4
2526 && (y
& (0xffffffff ^ RS1(~0)))
2527 == (INSN_OR
| RD(O7
) | RS2(G0
)))
2532 z
= bfd_get_32 (input_bfd
,
2533 contents
+ rel
->r_offset
- 4);
2534 if ((z
& (0xffffffff ^ RD(~0)))
2535 != (INSN_OR
| RS1(O7
) | RS2(G0
)))
2543 If call foo was replaced with ba, replace
2544 or %rN, %g0, %o7 with nop. */
2546 reg
= (y
& RS1(~0)) >> 14;
2547 if (reg
!= ((z
& RD(~0)) >> 25)
2548 || reg
== G0
|| reg
== O7
)
2551 bfd_put_32 (input_bfd
, (bfd_vma
) INSN_NOP
,
2552 contents
+ rel
->r_offset
+ 4);
2562 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2563 contents
, rel
->r_offset
,
2564 relocation
, rel
->r_addend
);
2568 if (unresolved_reloc
2570 && (input_section
->flags
& SEC_DEBUGGING
) != 0
2571 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
2572 (*_bfd_error_handler
)
2573 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
2574 bfd_archive_filename (input_bfd
),
2575 bfd_get_section_name (input_bfd
, input_section
),
2576 (long) rel
->r_offset
,
2577 h
->root
.root
.string
);
2585 case bfd_reloc_outofrange
:
2588 case bfd_reloc_overflow
:
2592 /* The Solaris native linker silently disregards
2593 overflows. We don't, but this breaks stabs debugging
2594 info, whose relocations are only 32-bits wide. Ignore
2595 overflows in this case. */
2596 if (r_type
== R_SPARC_32
2597 && (input_section
->flags
& SEC_DEBUGGING
) != 0
2598 && strcmp (bfd_section_name (input_bfd
, input_section
),
2604 if (h
->root
.type
== bfd_link_hash_undefweak
2605 && howto
->pc_relative
)
2607 /* Assume this is a call protected by other code that
2608 detect the symbol is undefined. If this is the case,
2609 we can safely ignore the overflow. If not, the
2610 program is hosed anyway, and a little warning isn't
2615 name
= h
->root
.root
.string
;
2619 name
= (bfd_elf_string_from_elf_section
2621 symtab_hdr
->sh_link
,
2626 name
= bfd_section_name (input_bfd
, sec
);
2628 if (! ((*info
->callbacks
->reloc_overflow
)
2629 (info
, name
, howto
->name
, (bfd_vma
) 0,
2630 input_bfd
, input_section
, rel
->r_offset
)))
2640 /* Finish up dynamic symbol handling. We set the contents of various
2641 dynamic sections here. */
2644 sparc64_elf_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
2646 struct bfd_link_info
*info
;
2647 struct elf_link_hash_entry
*h
;
2648 Elf_Internal_Sym
*sym
;
2652 dynobj
= elf_hash_table (info
)->dynobj
;
2654 if (h
->plt
.offset
!= (bfd_vma
) -1)
2658 Elf_Internal_Rela rela
;
2660 /* This symbol has an entry in the PLT. Set it up. */
2662 BFD_ASSERT (h
->dynindx
!= -1);
2664 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2665 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
2666 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
);
2668 /* Fill in the entry in the .rela.plt section. */
2670 if (h
->plt
.offset
< LARGE_PLT_THRESHOLD
)
2672 rela
.r_offset
= sparc64_elf_plt_entry_offset (h
->plt
.offset
);
2677 bfd_vma max
= splt
->_raw_size
/ PLT_ENTRY_SIZE
;
2678 rela
.r_offset
= sparc64_elf_plt_ptr_offset (h
->plt
.offset
, max
);
2679 rela
.r_addend
= -(sparc64_elf_plt_entry_offset (h
->plt
.offset
) + 4)
2680 -(splt
->output_section
->vma
+ splt
->output_offset
);
2682 rela
.r_offset
+= (splt
->output_section
->vma
+ splt
->output_offset
);
2683 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_JMP_SLOT
);
2685 /* Adjust for the first 4 reserved elements in the .plt section
2686 when setting the offset in the .rela.plt section.
2687 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
2688 thus .plt[4] has corresponding .rela.plt[0] and so on. */
2690 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2691 ((Elf64_External_Rela
*) srela
->contents
2692 + (h
->plt
.offset
- 4)));
2694 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
2696 /* Mark the symbol as undefined, rather than as defined in
2697 the .plt section. Leave the value alone. */
2698 sym
->st_shndx
= SHN_UNDEF
;
2699 /* If the symbol is weak, we do need to clear the value.
2700 Otherwise, the PLT entry would provide a definition for
2701 the symbol even if the symbol wasn't defined anywhere,
2702 and so the symbol would never be NULL. */
2703 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR_NONWEAK
)
2709 if (h
->got
.offset
!= (bfd_vma
) -1)
2713 Elf_Internal_Rela rela
;
2715 /* This symbol has an entry in the GOT. Set it up. */
2717 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2718 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
2719 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
2721 rela
.r_offset
= (sgot
->output_section
->vma
2722 + sgot
->output_offset
2723 + (h
->got
.offset
&~ (bfd_vma
) 1));
2725 /* If this is a -Bsymbolic link, and the symbol is defined
2726 locally, we just want to emit a RELATIVE reloc. Likewise if
2727 the symbol was forced to be local because of a version file.
2728 The entry in the global offset table will already have been
2729 initialized in the relocate_section function. */
2731 && (info
->symbolic
|| h
->dynindx
== -1)
2732 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
2734 asection
*sec
= h
->root
.u
.def
.section
;
2735 rela
.r_info
= ELF64_R_INFO (0, R_SPARC_RELATIVE
);
2736 rela
.r_addend
= (h
->root
.u
.def
.value
2737 + sec
->output_section
->vma
2738 + sec
->output_offset
);
2742 bfd_put_64 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
2743 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_GLOB_DAT
);
2747 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2748 ((Elf64_External_Rela
*) srela
->contents
2749 + srela
->reloc_count
));
2750 ++srela
->reloc_count
;
2753 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
2756 Elf_Internal_Rela rela
;
2758 /* This symbols needs a copy reloc. Set it up. */
2760 BFD_ASSERT (h
->dynindx
!= -1);
2762 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
2764 BFD_ASSERT (s
!= NULL
);
2766 rela
.r_offset
= (h
->root
.u
.def
.value
2767 + h
->root
.u
.def
.section
->output_section
->vma
2768 + h
->root
.u
.def
.section
->output_offset
);
2769 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_SPARC_COPY
);
2771 bfd_elf64_swap_reloca_out (output_bfd
, &rela
,
2772 ((Elf64_External_Rela
*) s
->contents
2777 /* Mark some specially defined symbols as absolute. */
2778 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
2779 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
2780 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2781 sym
->st_shndx
= SHN_ABS
;
2786 /* Finish up the dynamic sections. */
2789 sparc64_elf_finish_dynamic_sections (output_bfd
, info
)
2791 struct bfd_link_info
*info
;
2794 int stt_regidx
= -1;
2798 dynobj
= elf_hash_table (info
)->dynobj
;
2800 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2802 if (elf_hash_table (info
)->dynamic_sections_created
)
2805 Elf64_External_Dyn
*dyncon
, *dynconend
;
2807 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2808 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
2810 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
2811 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2812 for (; dyncon
< dynconend
; dyncon
++)
2814 Elf_Internal_Dyn dyn
;
2818 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2822 case DT_PLTGOT
: name
= ".plt"; size
= false; break;
2823 case DT_PLTRELSZ
: name
= ".rela.plt"; size
= true; break;
2824 case DT_JMPREL
: name
= ".rela.plt"; size
= false; break;
2825 case DT_SPARC_REGISTER
:
2826 if (stt_regidx
== -1)
2829 _bfd_elf_link_lookup_local_dynindx (info
, output_bfd
, -1);
2830 if (stt_regidx
== -1)
2833 dyn
.d_un
.d_val
= stt_regidx
++;
2834 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2836 default: name
= NULL
; size
= false; break;
2843 s
= bfd_get_section_by_name (output_bfd
, name
);
2849 dyn
.d_un
.d_ptr
= s
->vma
;
2852 if (s
->_cooked_size
!= 0)
2853 dyn
.d_un
.d_val
= s
->_cooked_size
;
2855 dyn
.d_un
.d_val
= s
->_raw_size
;
2858 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2862 /* Initialize the contents of the .plt section. */
2863 if (splt
->_raw_size
> 0)
2865 sparc64_elf_build_plt (output_bfd
, splt
->contents
,
2866 (int) (splt
->_raw_size
/ PLT_ENTRY_SIZE
));
2869 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
2873 /* Set the first entry in the global offset table to the address of
2874 the dynamic section. */
2875 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2876 BFD_ASSERT (sgot
!= NULL
);
2877 if (sgot
->_raw_size
> 0)
2880 bfd_put_64 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
2882 bfd_put_64 (output_bfd
,
2883 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2887 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
2892 static enum elf_reloc_type_class
2893 sparc64_elf_reloc_type_class (rela
)
2894 const Elf_Internal_Rela
*rela
;
2896 switch ((int) ELF64_R_TYPE (rela
->r_info
))
2898 case R_SPARC_RELATIVE
:
2899 return reloc_class_relative
;
2900 case R_SPARC_JMP_SLOT
:
2901 return reloc_class_plt
;
2903 return reloc_class_copy
;
2905 return reloc_class_normal
;
2909 /* Functions for dealing with the e_flags field. */
2911 /* Merge backend specific data from an object file to the output
2912 object file when linking. */
2915 sparc64_elf_merge_private_bfd_data (ibfd
, obfd
)
2920 flagword new_flags
, old_flags
;
2923 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2924 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2927 new_flags
= elf_elfheader (ibfd
)->e_flags
;
2928 old_flags
= elf_elfheader (obfd
)->e_flags
;
2930 if (!elf_flags_init (obfd
)) /* First call, no flags set */
2932 elf_flags_init (obfd
) = true;
2933 elf_elfheader (obfd
)->e_flags
= new_flags
;
2936 else if (new_flags
== old_flags
) /* Compatible flags are ok */
2939 else /* Incompatible flags */
2943 #define EF_SPARC_ISA_EXTENSIONS \
2944 (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1)
2946 if ((ibfd
->flags
& DYNAMIC
) != 0)
2948 /* We don't want dynamic objects memory ordering and
2949 architecture to have any role. That's what dynamic linker
2951 new_flags
&= ~(EF_SPARCV9_MM
| EF_SPARC_ISA_EXTENSIONS
);
2952 new_flags
|= (old_flags
2953 & (EF_SPARCV9_MM
| EF_SPARC_ISA_EXTENSIONS
));
2957 /* Choose the highest architecture requirements. */
2958 old_flags
|= (new_flags
& EF_SPARC_ISA_EXTENSIONS
);
2959 new_flags
|= (old_flags
& EF_SPARC_ISA_EXTENSIONS
);
2960 if ((old_flags
& (EF_SPARC_SUN_US1
| EF_SPARC_SUN_US3
))
2961 && (old_flags
& EF_SPARC_HAL_R1
))
2964 (*_bfd_error_handler
)
2965 (_("%s: linking UltraSPARC specific with HAL specific code"),
2966 bfd_archive_filename (ibfd
));
2968 /* Choose the most restrictive memory ordering. */
2969 old_mm
= (old_flags
& EF_SPARCV9_MM
);
2970 new_mm
= (new_flags
& EF_SPARCV9_MM
);
2971 old_flags
&= ~EF_SPARCV9_MM
;
2972 new_flags
&= ~EF_SPARCV9_MM
;
2973 if (new_mm
< old_mm
)
2975 old_flags
|= old_mm
;
2976 new_flags
|= old_mm
;
2979 /* Warn about any other mismatches */
2980 if (new_flags
!= old_flags
)
2983 (*_bfd_error_handler
)
2984 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
2985 bfd_archive_filename (ibfd
), (long) new_flags
, (long) old_flags
);
2988 elf_elfheader (obfd
)->e_flags
= old_flags
;
2992 bfd_set_error (bfd_error_bad_value
);
2999 /* Print a STT_REGISTER symbol to file FILE. */
3002 sparc64_elf_print_symbol_all (abfd
, filep
, symbol
)
3003 bfd
*abfd ATTRIBUTE_UNUSED
;
3007 FILE *file
= (FILE *) filep
;
3010 if (ELF_ST_TYPE (((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_info
)
3014 reg
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
;
3015 type
= symbol
->flags
;
3016 fprintf (file
, "REG_%c%c%11s%c%c R", "GOLI" [reg
/ 8], '0' + (reg
& 7), "",
3018 ? (type
& BSF_GLOBAL
) ? '!' : 'l'
3019 : (type
& BSF_GLOBAL
) ? 'g' : ' '),
3020 (type
& BSF_WEAK
) ? 'w' : ' ');
3021 if (symbol
->name
== NULL
|| symbol
->name
[0] == '\0')
3024 return symbol
->name
;
3027 /* Set the right machine number for a SPARC64 ELF file. */
3030 sparc64_elf_object_p (abfd
)
3033 unsigned long mach
= bfd_mach_sparc_v9
;
3035 if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US3
)
3036 mach
= bfd_mach_sparc_v9b
;
3037 else if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US1
)
3038 mach
= bfd_mach_sparc_v9a
;
3039 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
, mach
);
3042 /* Relocations in the 64 bit SPARC ELF ABI are more complex than in
3043 standard ELF, because R_SPARC_OLO10 has secondary addend in
3044 ELF64_R_TYPE_DATA field. This structure is used to redirect the
3045 relocation handling routines. */
3047 const struct elf_size_info sparc64_elf_size_info
=
3049 sizeof (Elf64_External_Ehdr
),
3050 sizeof (Elf64_External_Phdr
),
3051 sizeof (Elf64_External_Shdr
),
3052 sizeof (Elf64_External_Rel
),
3053 sizeof (Elf64_External_Rela
),
3054 sizeof (Elf64_External_Sym
),
3055 sizeof (Elf64_External_Dyn
),
3056 sizeof (Elf_External_Note
),
3057 4, /* hash-table entry size */
3058 /* internal relocations per external relocations.
3059 For link purposes we use just 1 internal per
3060 1 external, for assembly and slurp symbol table
3067 bfd_elf64_write_out_phdrs
,
3068 bfd_elf64_write_shdrs_and_ehdr
,
3069 sparc64_elf_write_relocs
,
3070 bfd_elf64_swap_symbol_in
,
3071 bfd_elf64_swap_symbol_out
,
3072 sparc64_elf_slurp_reloc_table
,
3073 bfd_elf64_slurp_symbol_table
,
3074 bfd_elf64_swap_dyn_in
,
3075 bfd_elf64_swap_dyn_out
,
3082 #define TARGET_BIG_SYM bfd_elf64_sparc_vec
3083 #define TARGET_BIG_NAME "elf64-sparc"
3084 #define ELF_ARCH bfd_arch_sparc
3085 #define ELF_MAXPAGESIZE 0x100000
3087 /* This is the official ABI value. */
3088 #define ELF_MACHINE_CODE EM_SPARCV9
3090 /* This is the value that we used before the ABI was released. */
3091 #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9
3093 #define bfd_elf64_bfd_link_hash_table_create \
3094 sparc64_elf_bfd_link_hash_table_create
3096 #define elf_info_to_howto \
3097 sparc64_elf_info_to_howto
3098 #define bfd_elf64_get_reloc_upper_bound \
3099 sparc64_elf_get_reloc_upper_bound
3100 #define bfd_elf64_get_dynamic_reloc_upper_bound \
3101 sparc64_elf_get_dynamic_reloc_upper_bound
3102 #define bfd_elf64_canonicalize_dynamic_reloc \
3103 sparc64_elf_canonicalize_dynamic_reloc
3104 #define bfd_elf64_bfd_reloc_type_lookup \
3105 sparc64_elf_reloc_type_lookup
3106 #define bfd_elf64_bfd_relax_section \
3107 sparc64_elf_relax_section
3109 #define elf_backend_create_dynamic_sections \
3110 _bfd_elf_create_dynamic_sections
3111 #define elf_backend_add_symbol_hook \
3112 sparc64_elf_add_symbol_hook
3113 #define elf_backend_get_symbol_type \
3114 sparc64_elf_get_symbol_type
3115 #define elf_backend_symbol_processing \
3116 sparc64_elf_symbol_processing
3117 #define elf_backend_check_relocs \
3118 sparc64_elf_check_relocs
3119 #define elf_backend_adjust_dynamic_symbol \
3120 sparc64_elf_adjust_dynamic_symbol
3121 #define elf_backend_size_dynamic_sections \
3122 sparc64_elf_size_dynamic_sections
3123 #define elf_backend_relocate_section \
3124 sparc64_elf_relocate_section
3125 #define elf_backend_finish_dynamic_symbol \
3126 sparc64_elf_finish_dynamic_symbol
3127 #define elf_backend_finish_dynamic_sections \
3128 sparc64_elf_finish_dynamic_sections
3129 #define elf_backend_print_symbol_all \
3130 sparc64_elf_print_symbol_all
3131 #define elf_backend_output_arch_syms \
3132 sparc64_elf_output_arch_syms
3133 #define bfd_elf64_bfd_merge_private_bfd_data \
3134 sparc64_elf_merge_private_bfd_data
3136 #define elf_backend_size_info \
3137 sparc64_elf_size_info
3138 #define elf_backend_object_p \
3139 sparc64_elf_object_p
3140 #define elf_backend_reloc_type_class \
3141 sparc64_elf_reloc_type_class
3143 #define elf_backend_want_got_plt 0
3144 #define elf_backend_plt_readonly 0
3145 #define elf_backend_want_plt_sym 1
3147 /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */
3148 #define elf_backend_plt_alignment 8
3150 #define elf_backend_got_header_size 8
3151 #define elf_backend_plt_header_size PLT_HEADER_SIZE
3153 #include "elf64-target.h"