Commit | Line | Data |
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252b5132 | 1 | /* SPARC-specific support for 64-bit ELF |
37fb6db1 ILT |
2 | Copyright (C) 1993, 95, 96, 97, 98, 99, 2000 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
f7775d95 | 25 | #include "opcode/sparc.h" |
252b5132 RH |
26 | |
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*/ | |
31 | ||
32 | #include "elf/sparc.h" | |
33 | ||
34 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
35 | #define MINUS_ONE (~ (bfd_vma) 0) | |
36 | ||
587ff49e RH |
37 | static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create |
38 | PARAMS((bfd *)); | |
252b5132 RH |
39 | static reloc_howto_type *sparc64_elf_reloc_type_lookup |
40 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
41 | static void sparc64_elf_info_to_howto | |
42 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
43 | ||
44 | static void sparc64_elf_build_plt | |
45 | PARAMS((bfd *, unsigned char *, int)); | |
46 | static bfd_vma sparc64_elf_plt_entry_offset | |
47 | PARAMS((int)); | |
48 | static bfd_vma sparc64_elf_plt_ptr_offset | |
49 | PARAMS((int, int)); | |
50 | ||
51 | static boolean sparc64_elf_check_relocs | |
52 | PARAMS((bfd *, struct bfd_link_info *, asection *sec, | |
53 | const Elf_Internal_Rela *)); | |
54 | static boolean sparc64_elf_adjust_dynamic_symbol | |
55 | PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
56 | static boolean sparc64_elf_size_dynamic_sections | |
57 | PARAMS((bfd *, struct bfd_link_info *)); | |
587ff49e RH |
58 | static int sparc64_elf_get_symbol_type |
59 | PARAMS (( Elf_Internal_Sym *, int)); | |
60 | static boolean sparc64_elf_add_symbol_hook | |
61 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
62 | const char **, flagword *, asection **, bfd_vma *)); | |
63 | static void sparc64_elf_symbol_processing | |
64 | PARAMS ((bfd *, asymbol *)); | |
252b5132 RH |
65 | |
66 | static boolean sparc64_elf_merge_private_bfd_data | |
67 | PARAMS ((bfd *, bfd *)); | |
68 | ||
f7775d95 JJ |
69 | static boolean sparc64_elf_relax_section |
70 | PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); | |
252b5132 RH |
71 | static boolean sparc64_elf_relocate_section |
72 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
73 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
74 | static boolean sparc64_elf_object_p PARAMS ((bfd *)); | |
f65054f7 RH |
75 | static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *)); |
76 | static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); | |
77 | static boolean sparc64_elf_slurp_one_reloc_table | |
78 | PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, boolean)); | |
79 | static boolean sparc64_elf_slurp_reloc_table | |
80 | PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
81 | static long sparc64_elf_canonicalize_dynamic_reloc | |
82 | PARAMS ((bfd *, arelent **, asymbol **)); | |
83 | static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR)); | |
252b5132 RH |
84 | \f |
85 | /* The relocation "howto" table. */ | |
86 | ||
87 | static bfd_reloc_status_type sparc_elf_notsup_reloc | |
88 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
89 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc | |
90 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
91 | static bfd_reloc_status_type sparc_elf_hix22_reloc | |
92 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
93 | static bfd_reloc_status_type sparc_elf_lox10_reloc | |
94 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
95 | ||
96 | static reloc_howto_type sparc64_elf_howto_table[] = | |
97 | { | |
98 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
99 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), | |
100 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), | |
101 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), | |
102 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), | |
103 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), | |
104 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true), | |
105 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), | |
106 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), | |
107 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), | |
108 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), | |
109 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), | |
110 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), | |
111 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), | |
112 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), | |
113 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), | |
114 | HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), | |
115 | HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), | |
116 | HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), | |
117 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), | |
118 | 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), | |
119 | 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), | |
120 | HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), | |
121 | HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true), | |
122 | #ifndef SPARC64_OLD_RELOCS | |
123 | /* These aren't implemented yet. */ | |
124 | HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), | |
125 | HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), | |
126 | HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), | |
127 | HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), | |
128 | HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), | |
129 | HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), | |
130 | #endif | |
131 | HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), | |
132 | HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), | |
133 | HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true), | |
134 | HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true), | |
135 | HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), | |
136 | HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), | |
137 | HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), | |
138 | 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), | |
139 | 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), | |
140 | 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), | |
141 | HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), | |
142 | HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), | |
143 | 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), | |
144 | HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), | |
145 | HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), | |
146 | HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), | |
147 | HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true), | |
148 | HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, false), | |
149 | HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false), | |
150 | HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false), | |
151 | HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false), | |
152 | HOWTO(R_SPARC_M44, 12,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false), | |
153 | HOWTO(R_SPARC_L44, 0,2,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false), | |
154 | HOWTO(R_SPARC_REGISTER, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false), | |
155 | HOWTO(R_SPARC_UA64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", false,0,MINUS_ONE, true), | |
156 | HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true) | |
157 | }; | |
158 | ||
159 | struct elf_reloc_map { | |
160 | bfd_reloc_code_real_type bfd_reloc_val; | |
161 | unsigned char elf_reloc_val; | |
162 | }; | |
163 | ||
164 | static CONST struct elf_reloc_map sparc_reloc_map[] = | |
165 | { | |
166 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
167 | { BFD_RELOC_16, R_SPARC_16, }, | |
168 | { BFD_RELOC_8, R_SPARC_8 }, | |
169 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
170 | { BFD_RELOC_CTOR, R_SPARC_64 }, | |
171 | { BFD_RELOC_32, R_SPARC_32 }, | |
172 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
173 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
174 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
175 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
176 | { BFD_RELOC_SPARC22, R_SPARC_22 }, | |
177 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
178 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
179 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
180 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
181 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
182 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
183 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
184 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
185 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
186 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
187 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
188 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
189 | /* ??? Doesn't dwarf use this? */ | |
190 | /*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ | |
191 | {BFD_RELOC_SPARC_10, R_SPARC_10}, | |
192 | {BFD_RELOC_SPARC_11, R_SPARC_11}, | |
193 | {BFD_RELOC_SPARC_64, R_SPARC_64}, | |
194 | {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10}, | |
195 | {BFD_RELOC_SPARC_HH22, R_SPARC_HH22}, | |
196 | {BFD_RELOC_SPARC_HM10, R_SPARC_HM10}, | |
197 | {BFD_RELOC_SPARC_LM22, R_SPARC_LM22}, | |
198 | {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22}, | |
199 | {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10}, | |
200 | {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22}, | |
201 | {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16}, | |
202 | {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19}, | |
203 | {BFD_RELOC_SPARC_7, R_SPARC_7}, | |
204 | {BFD_RELOC_SPARC_5, R_SPARC_5}, | |
205 | {BFD_RELOC_SPARC_6, R_SPARC_6}, | |
206 | {BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64}, | |
207 | {BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64}, | |
208 | {BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22}, | |
209 | {BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10}, | |
210 | {BFD_RELOC_SPARC_H44, R_SPARC_H44}, | |
211 | {BFD_RELOC_SPARC_M44, R_SPARC_M44}, | |
212 | {BFD_RELOC_SPARC_L44, R_SPARC_L44}, | |
213 | {BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER} | |
214 | }; | |
215 | ||
216 | static reloc_howto_type * | |
217 | sparc64_elf_reloc_type_lookup (abfd, code) | |
6c08d697 | 218 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
219 | bfd_reloc_code_real_type code; |
220 | { | |
221 | unsigned int i; | |
222 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
223 | { | |
224 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
225 | return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; | |
226 | } | |
227 | return 0; | |
228 | } | |
229 | ||
230 | static void | |
231 | sparc64_elf_info_to_howto (abfd, cache_ptr, dst) | |
6c08d697 | 232 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
233 | arelent *cache_ptr; |
234 | Elf64_Internal_Rela *dst; | |
235 | { | |
f65054f7 RH |
236 | BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std); |
237 | cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)]; | |
238 | } | |
239 | \f | |
240 | /* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA | |
241 | section can represent up to two relocs, we must tell the user to allocate | |
242 | more space. */ | |
243 | ||
244 | static long | |
245 | sparc64_elf_get_reloc_upper_bound (abfd, sec) | |
6c08d697 | 246 | bfd *abfd ATTRIBUTE_UNUSED; |
f65054f7 RH |
247 | asection *sec; |
248 | { | |
249 | return (sec->reloc_count * 2 + 1) * sizeof (arelent *); | |
250 | } | |
251 | ||
252 | static long | |
253 | sparc64_elf_get_dynamic_reloc_upper_bound (abfd) | |
254 | bfd *abfd; | |
255 | { | |
256 | return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2; | |
257 | } | |
258 | ||
259 | /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of | |
260 | them. We cannot use generic elf routines for this, because R_SPARC_OLO10 | |
261 | has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations | |
262 | for the same location, R_SPARC_LO10 and R_SPARC_13. */ | |
263 | ||
264 | static boolean | |
265 | sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic) | |
266 | bfd *abfd; | |
267 | asection *asect; | |
268 | Elf_Internal_Shdr *rel_hdr; | |
269 | asymbol **symbols; | |
270 | boolean dynamic; | |
271 | { | |
f65054f7 RH |
272 | PTR allocated = NULL; |
273 | bfd_byte *native_relocs; | |
274 | arelent *relent; | |
275 | unsigned int i; | |
276 | int entsize; | |
277 | bfd_size_type count; | |
278 | arelent *relents; | |
279 | ||
280 | allocated = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size); | |
281 | if (allocated == NULL) | |
282 | goto error_return; | |
283 | ||
284 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 | |
285 | || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd) | |
286 | != rel_hdr->sh_size)) | |
287 | goto error_return; | |
288 | ||
289 | native_relocs = (bfd_byte *) allocated; | |
290 | ||
291 | relents = asect->relocation + asect->reloc_count; | |
292 | ||
293 | entsize = rel_hdr->sh_entsize; | |
294 | BFD_ASSERT (entsize == sizeof (Elf64_External_Rela)); | |
295 | ||
296 | count = rel_hdr->sh_size / entsize; | |
297 | ||
298 | for (i = 0, relent = relents; i < count; | |
299 | i++, relent++, native_relocs += entsize) | |
300 | { | |
301 | Elf_Internal_Rela rela; | |
302 | ||
303 | bfd_elf64_swap_reloca_in (abfd, (Elf64_External_Rela *) native_relocs, &rela); | |
304 | ||
305 | /* The address of an ELF reloc is section relative for an object | |
306 | file, and absolute for an executable file or shared library. | |
307 | The address of a normal BFD reloc is always section relative, | |
308 | and the address of a dynamic reloc is absolute.. */ | |
309 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) | |
310 | relent->address = rela.r_offset; | |
311 | else | |
312 | relent->address = rela.r_offset - asect->vma; | |
313 | ||
314 | if (ELF64_R_SYM (rela.r_info) == 0) | |
315 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
316 | else | |
317 | { | |
318 | asymbol **ps, *s; | |
319 | ||
320 | ps = symbols + ELF64_R_SYM (rela.r_info) - 1; | |
321 | s = *ps; | |
322 | ||
323 | /* Canonicalize ELF section symbols. FIXME: Why? */ | |
324 | if ((s->flags & BSF_SECTION_SYM) == 0) | |
325 | relent->sym_ptr_ptr = ps; | |
326 | else | |
327 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; | |
328 | } | |
329 | ||
330 | relent->addend = rela.r_addend; | |
331 | ||
332 | BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std); | |
333 | if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10) | |
334 | { | |
335 | relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10]; | |
336 | relent[1].address = relent->address; | |
337 | relent++; | |
338 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
339 | relent->addend = ELF64_R_TYPE_DATA (rela.r_info); | |
340 | relent->howto = &sparc64_elf_howto_table[R_SPARC_13]; | |
341 | } | |
342 | else | |
343 | relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)]; | |
344 | } | |
345 | ||
346 | asect->reloc_count += relent - relents; | |
347 | ||
348 | if (allocated != NULL) | |
349 | free (allocated); | |
350 | ||
351 | return true; | |
352 | ||
353 | error_return: | |
354 | if (allocated != NULL) | |
355 | free (allocated); | |
356 | return false; | |
357 | } | |
358 | ||
359 | /* Read in and swap the external relocs. */ | |
360 | ||
361 | static boolean | |
362 | sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic) | |
363 | bfd *abfd; | |
364 | asection *asect; | |
365 | asymbol **symbols; | |
366 | boolean dynamic; | |
367 | { | |
368 | struct bfd_elf_section_data * const d = elf_section_data (asect); | |
369 | Elf_Internal_Shdr *rel_hdr; | |
370 | Elf_Internal_Shdr *rel_hdr2; | |
371 | ||
372 | if (asect->relocation != NULL) | |
373 | return true; | |
374 | ||
375 | if (! dynamic) | |
376 | { | |
377 | if ((asect->flags & SEC_RELOC) == 0 | |
378 | || asect->reloc_count == 0) | |
379 | return true; | |
380 | ||
381 | rel_hdr = &d->rel_hdr; | |
382 | rel_hdr2 = d->rel_hdr2; | |
383 | ||
384 | BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset | |
385 | || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); | |
386 | } | |
387 | else | |
388 | { | |
389 | /* Note that ASECT->RELOC_COUNT tends not to be accurate in this | |
390 | case because relocations against this section may use the | |
391 | dynamic symbol table, and in that case bfd_section_from_shdr | |
392 | in elf.c does not update the RELOC_COUNT. */ | |
393 | if (asect->_raw_size == 0) | |
394 | return true; | |
395 | ||
396 | rel_hdr = &d->this_hdr; | |
397 | asect->reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize; | |
398 | rel_hdr2 = NULL; | |
399 | } | |
400 | ||
401 | asect->relocation = ((arelent *) | |
402 | bfd_alloc (abfd, | |
403 | asect->reloc_count * 2 * sizeof (arelent))); | |
404 | if (asect->relocation == NULL) | |
405 | return false; | |
406 | ||
407 | /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count. */ | |
408 | asect->reloc_count = 0; | |
409 | ||
410 | if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, | |
411 | dynamic)) | |
412 | return false; | |
413 | ||
414 | if (rel_hdr2 | |
415 | && !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols, | |
416 | dynamic)) | |
417 | return false; | |
418 | ||
419 | return true; | |
420 | } | |
421 | ||
422 | /* Canonicalize the dynamic relocation entries. Note that we return | |
423 | the dynamic relocations as a single block, although they are | |
424 | actually associated with particular sections; the interface, which | |
425 | was designed for SunOS style shared libraries, expects that there | |
426 | is only one set of dynamic relocs. Any section that was actually | |
427 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses | |
428 | the dynamic symbol table, is considered to be a dynamic reloc | |
429 | section. */ | |
430 | ||
431 | static long | |
432 | sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms) | |
433 | bfd *abfd; | |
434 | arelent **storage; | |
435 | asymbol **syms; | |
436 | { | |
437 | asection *s; | |
438 | long ret; | |
439 | ||
440 | if (elf_dynsymtab (abfd) == 0) | |
441 | { | |
442 | bfd_set_error (bfd_error_invalid_operation); | |
443 | return -1; | |
444 | } | |
445 | ||
446 | ret = 0; | |
447 | for (s = abfd->sections; s != NULL; s = s->next) | |
448 | { | |
449 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
450 | && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
451 | { | |
452 | arelent *p; | |
453 | long count, i; | |
454 | ||
455 | if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, true)) | |
456 | return -1; | |
457 | count = s->reloc_count; | |
458 | p = s->relocation; | |
459 | for (i = 0; i < count; i++) | |
460 | *storage++ = p++; | |
461 | ret += count; | |
462 | } | |
463 | } | |
464 | ||
465 | *storage = NULL; | |
466 | ||
467 | return ret; | |
468 | } | |
469 | ||
470 | /* Write out the relocs. */ | |
471 | ||
472 | static void | |
473 | sparc64_elf_write_relocs (abfd, sec, data) | |
474 | bfd *abfd; | |
475 | asection *sec; | |
476 | PTR data; | |
477 | { | |
478 | boolean *failedp = (boolean *) data; | |
479 | Elf_Internal_Shdr *rela_hdr; | |
37fb6db1 | 480 | Elf64_External_Rela *outbound_relocas, *src_rela; |
f65054f7 RH |
481 | unsigned int idx, count; |
482 | asymbol *last_sym = 0; | |
483 | int last_sym_idx = 0; | |
484 | ||
485 | /* If we have already failed, don't do anything. */ | |
486 | if (*failedp) | |
487 | return; | |
488 | ||
489 | if ((sec->flags & SEC_RELOC) == 0) | |
490 | return; | |
491 | ||
492 | /* The linker backend writes the relocs out itself, and sets the | |
493 | reloc_count field to zero to inhibit writing them here. Also, | |
494 | sometimes the SEC_RELOC flag gets set even when there aren't any | |
495 | relocs. */ | |
496 | if (sec->reloc_count == 0) | |
497 | return; | |
498 | ||
499 | /* We can combine two relocs that refer to the same address | |
500 | into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the | |
501 | latter is R_SPARC_13 with no associated symbol. */ | |
502 | count = 0; | |
503 | for (idx = 0; idx < sec->reloc_count; idx++) | |
504 | { | |
505 | bfd_vma addr; | |
f65054f7 RH |
506 | |
507 | ++count; | |
508 | ||
509 | addr = sec->orelocation[idx]->address; | |
510 | if (sec->orelocation[idx]->howto->type == R_SPARC_LO10 | |
511 | && idx < sec->reloc_count - 1) | |
512 | { | |
513 | arelent *r = sec->orelocation[idx + 1]; | |
514 | ||
515 | if (r->howto->type == R_SPARC_13 | |
516 | && r->address == addr | |
517 | && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
518 | && (*r->sym_ptr_ptr)->value == 0) | |
519 | ++idx; | |
520 | } | |
521 | } | |
522 | ||
523 | rela_hdr = &elf_section_data (sec)->rel_hdr; | |
524 | ||
525 | rela_hdr->sh_size = rela_hdr->sh_entsize * count; | |
526 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); | |
527 | if (rela_hdr->contents == NULL) | |
528 | { | |
529 | *failedp = true; | |
530 | return; | |
531 | } | |
532 | ||
533 | /* Figure out whether the relocations are RELA or REL relocations. */ | |
534 | if (rela_hdr->sh_type != SHT_RELA) | |
535 | abort (); | |
536 | ||
537 | /* orelocation has the data, reloc_count has the count... */ | |
538 | outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents; | |
37fb6db1 | 539 | src_rela = outbound_relocas; |
f65054f7 RH |
540 | |
541 | for (idx = 0; idx < sec->reloc_count; idx++) | |
542 | { | |
543 | Elf_Internal_Rela dst_rela; | |
f65054f7 RH |
544 | arelent *ptr; |
545 | asymbol *sym; | |
546 | int n; | |
547 | ||
548 | ptr = sec->orelocation[idx]; | |
f65054f7 RH |
549 | |
550 | /* The address of an ELF reloc is section relative for an object | |
551 | file, and absolute for an executable file or shared library. | |
552 | The address of a BFD reloc is always section relative. */ | |
553 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
554 | dst_rela.r_offset = ptr->address; | |
555 | else | |
556 | dst_rela.r_offset = ptr->address + sec->vma; | |
557 | ||
558 | sym = *ptr->sym_ptr_ptr; | |
559 | if (sym == last_sym) | |
560 | n = last_sym_idx; | |
561 | else if (bfd_is_abs_section (sym->section) && sym->value == 0) | |
562 | n = STN_UNDEF; | |
563 | else | |
564 | { | |
565 | last_sym = sym; | |
566 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); | |
567 | if (n < 0) | |
568 | { | |
569 | *failedp = true; | |
570 | return; | |
571 | } | |
572 | last_sym_idx = n; | |
573 | } | |
574 | ||
575 | if ((*ptr->sym_ptr_ptr)->the_bfd != NULL | |
576 | && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec | |
577 | && ! _bfd_elf_validate_reloc (abfd, ptr)) | |
578 | { | |
579 | *failedp = true; | |
580 | return; | |
581 | } | |
582 | ||
583 | if (ptr->howto->type == R_SPARC_LO10 | |
584 | && idx < sec->reloc_count - 1) | |
585 | { | |
586 | arelent *r = sec->orelocation[idx + 1]; | |
587 | ||
588 | if (r->howto->type == R_SPARC_13 | |
589 | && r->address == ptr->address | |
590 | && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
591 | && (*r->sym_ptr_ptr)->value == 0) | |
592 | { | |
593 | idx++; | |
594 | dst_rela.r_info | |
595 | = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend, | |
596 | R_SPARC_OLO10)); | |
597 | } | |
598 | else | |
599 | dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10); | |
600 | } | |
601 | else | |
602 | dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type); | |
603 | ||
604 | dst_rela.r_addend = ptr->addend; | |
605 | bfd_elf64_swap_reloca_out (abfd, &dst_rela, src_rela); | |
37fb6db1 | 606 | ++src_rela; |
f65054f7 | 607 | } |
252b5132 | 608 | } |
587ff49e RH |
609 | \f |
610 | /* Sparc64 ELF linker hash table. */ | |
611 | ||
612 | struct sparc64_elf_app_reg | |
613 | { | |
614 | unsigned char bind; | |
615 | unsigned short shndx; | |
616 | bfd *abfd; | |
617 | char *name; | |
618 | }; | |
619 | ||
620 | struct sparc64_elf_link_hash_table | |
621 | { | |
622 | struct elf_link_hash_table root; | |
623 | ||
624 | struct sparc64_elf_app_reg app_regs [4]; | |
625 | }; | |
626 | ||
627 | /* Get the Sparc64 ELF linker hash table from a link_info structure. */ | |
628 | ||
629 | #define sparc64_elf_hash_table(p) \ | |
630 | ((struct sparc64_elf_link_hash_table *) ((p)->hash)) | |
631 | ||
632 | /* Create a Sparc64 ELF linker hash table. */ | |
633 | ||
634 | static struct bfd_link_hash_table * | |
635 | sparc64_elf_bfd_link_hash_table_create (abfd) | |
636 | bfd *abfd; | |
637 | { | |
638 | struct sparc64_elf_link_hash_table *ret; | |
639 | ||
640 | ret = ((struct sparc64_elf_link_hash_table *) | |
641 | bfd_zalloc (abfd, sizeof (struct sparc64_elf_link_hash_table))); | |
642 | if (ret == (struct sparc64_elf_link_hash_table *) NULL) | |
643 | return NULL; | |
644 | ||
645 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
646 | _bfd_elf_link_hash_newfunc)) | |
647 | { | |
648 | bfd_release (abfd, ret); | |
649 | return NULL; | |
650 | } | |
651 | ||
652 | return &ret->root.root; | |
653 | } | |
654 | ||
252b5132 RH |
655 | \f |
656 | /* Utility for performing the standard initial work of an instruction | |
657 | relocation. | |
658 | *PRELOCATION will contain the relocated item. | |
659 | *PINSN will contain the instruction from the input stream. | |
660 | If the result is `bfd_reloc_other' the caller can continue with | |
661 | performing the relocation. Otherwise it must stop and return the | |
662 | value to its caller. */ | |
663 | ||
664 | static bfd_reloc_status_type | |
665 | init_insn_reloc (abfd, | |
666 | reloc_entry, | |
667 | symbol, | |
668 | data, | |
669 | input_section, | |
670 | output_bfd, | |
671 | prelocation, | |
672 | pinsn) | |
673 | bfd *abfd; | |
674 | arelent *reloc_entry; | |
675 | asymbol *symbol; | |
676 | PTR data; | |
677 | asection *input_section; | |
678 | bfd *output_bfd; | |
679 | bfd_vma *prelocation; | |
680 | bfd_vma *pinsn; | |
681 | { | |
682 | bfd_vma relocation; | |
683 | reloc_howto_type *howto = reloc_entry->howto; | |
684 | ||
685 | if (output_bfd != (bfd *) NULL | |
686 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
687 | && (! howto->partial_inplace | |
688 | || reloc_entry->addend == 0)) | |
689 | { | |
690 | reloc_entry->address += input_section->output_offset; | |
691 | return bfd_reloc_ok; | |
692 | } | |
693 | ||
694 | /* This works because partial_inplace == false. */ | |
695 | if (output_bfd != NULL) | |
696 | return bfd_reloc_continue; | |
697 | ||
698 | if (reloc_entry->address > input_section->_cooked_size) | |
699 | return bfd_reloc_outofrange; | |
700 | ||
701 | relocation = (symbol->value | |
702 | + symbol->section->output_section->vma | |
703 | + symbol->section->output_offset); | |
704 | relocation += reloc_entry->addend; | |
705 | if (howto->pc_relative) | |
706 | { | |
707 | relocation -= (input_section->output_section->vma | |
708 | + input_section->output_offset); | |
709 | relocation -= reloc_entry->address; | |
710 | } | |
711 | ||
712 | *prelocation = relocation; | |
713 | *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
714 | return bfd_reloc_other; | |
715 | } | |
716 | ||
717 | /* For unsupported relocs. */ | |
718 | ||
719 | static bfd_reloc_status_type | |
720 | sparc_elf_notsup_reloc (abfd, | |
721 | reloc_entry, | |
722 | symbol, | |
723 | data, | |
724 | input_section, | |
725 | output_bfd, | |
726 | error_message) | |
6c08d697 JJ |
727 | bfd *abfd ATTRIBUTE_UNUSED; |
728 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
729 | asymbol *symbol ATTRIBUTE_UNUSED; | |
730 | PTR data ATTRIBUTE_UNUSED; | |
731 | asection *input_section ATTRIBUTE_UNUSED; | |
732 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
733 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
734 | { |
735 | return bfd_reloc_notsupported; | |
736 | } | |
737 | ||
738 | /* Handle the WDISP16 reloc. */ | |
739 | ||
740 | static bfd_reloc_status_type | |
741 | sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
742 | output_bfd, error_message) | |
743 | bfd *abfd; | |
744 | arelent *reloc_entry; | |
745 | asymbol *symbol; | |
746 | PTR data; | |
747 | asection *input_section; | |
748 | bfd *output_bfd; | |
6c08d697 | 749 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
750 | { |
751 | bfd_vma relocation; | |
752 | bfd_vma insn; | |
753 | bfd_reloc_status_type status; | |
754 | ||
755 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
756 | input_section, output_bfd, &relocation, &insn); | |
757 | if (status != bfd_reloc_other) | |
758 | return status; | |
759 | ||
760 | insn = (insn & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) | |
761 | | ((relocation >> 2) & 0x3fff)); | |
762 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
763 | ||
764 | if ((bfd_signed_vma) relocation < - 0x40000 | |
765 | || (bfd_signed_vma) relocation > 0x3ffff) | |
766 | return bfd_reloc_overflow; | |
767 | else | |
768 | return bfd_reloc_ok; | |
769 | } | |
770 | ||
771 | /* Handle the HIX22 reloc. */ | |
772 | ||
773 | static bfd_reloc_status_type | |
774 | sparc_elf_hix22_reloc (abfd, | |
775 | reloc_entry, | |
776 | symbol, | |
777 | data, | |
778 | input_section, | |
779 | output_bfd, | |
780 | error_message) | |
781 | bfd *abfd; | |
782 | arelent *reloc_entry; | |
783 | asymbol *symbol; | |
784 | PTR data; | |
785 | asection *input_section; | |
786 | bfd *output_bfd; | |
6c08d697 | 787 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
788 | { |
789 | bfd_vma relocation; | |
790 | bfd_vma insn; | |
791 | bfd_reloc_status_type status; | |
792 | ||
793 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
794 | input_section, output_bfd, &relocation, &insn); | |
795 | if (status != bfd_reloc_other) | |
796 | return status; | |
797 | ||
798 | relocation ^= MINUS_ONE; | |
799 | insn = (insn & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); | |
800 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
801 | ||
802 | if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) | |
803 | return bfd_reloc_overflow; | |
804 | else | |
805 | return bfd_reloc_ok; | |
806 | } | |
807 | ||
808 | /* Handle the LOX10 reloc. */ | |
809 | ||
810 | static bfd_reloc_status_type | |
811 | sparc_elf_lox10_reloc (abfd, | |
812 | reloc_entry, | |
813 | symbol, | |
814 | data, | |
815 | input_section, | |
816 | output_bfd, | |
817 | error_message) | |
818 | bfd *abfd; | |
819 | arelent *reloc_entry; | |
820 | asymbol *symbol; | |
821 | PTR data; | |
822 | asection *input_section; | |
823 | bfd *output_bfd; | |
6c08d697 | 824 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
825 | { |
826 | bfd_vma relocation; | |
827 | bfd_vma insn; | |
828 | bfd_reloc_status_type status; | |
829 | ||
830 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
831 | input_section, output_bfd, &relocation, &insn); | |
832 | if (status != bfd_reloc_other) | |
833 | return status; | |
834 | ||
835 | insn = (insn & ~0x1fff) | 0x1c00 | (relocation & 0x3ff); | |
836 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
837 | ||
838 | return bfd_reloc_ok; | |
839 | } | |
840 | \f | |
841 | /* PLT/GOT stuff */ | |
842 | ||
843 | /* Both the headers and the entries are icache aligned. */ | |
844 | #define PLT_ENTRY_SIZE 32 | |
845 | #define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE) | |
846 | #define LARGE_PLT_THRESHOLD 32768 | |
847 | #define GOT_RESERVED_ENTRIES 1 | |
848 | ||
849 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" | |
850 | ||
851 | ||
852 | /* Fill in the .plt section. */ | |
853 | ||
854 | static void | |
855 | sparc64_elf_build_plt (output_bfd, contents, nentries) | |
856 | bfd *output_bfd; | |
857 | unsigned char *contents; | |
858 | int nentries; | |
859 | { | |
860 | const unsigned int nop = 0x01000000; | |
861 | int i, j; | |
862 | ||
863 | /* The first four entries are reserved, and are initially undefined. | |
864 | We fill them with `illtrap 0' to force ld.so to do something. */ | |
865 | ||
866 | for (i = 0; i < PLT_HEADER_SIZE/4; ++i) | |
867 | bfd_put_32 (output_bfd, 0, contents+i*4); | |
868 | ||
869 | /* The first 32768 entries are close enough to plt1 to get there via | |
870 | a straight branch. */ | |
871 | ||
872 | for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i) | |
873 | { | |
874 | unsigned char *entry = contents + i * PLT_ENTRY_SIZE; | |
875 | unsigned int sethi, ba; | |
876 | ||
877 | /* sethi (. - plt0), %g1 */ | |
878 | sethi = 0x03000000 | (i * PLT_ENTRY_SIZE); | |
879 | ||
a11c78e7 RH |
880 | /* ba,a,pt %xcc, plt1 */ |
881 | ba = 0x30680000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff); | |
252b5132 RH |
882 | |
883 | bfd_put_32 (output_bfd, sethi, entry); | |
884 | bfd_put_32 (output_bfd, ba, entry+4); | |
885 | bfd_put_32 (output_bfd, nop, entry+8); | |
886 | bfd_put_32 (output_bfd, nop, entry+12); | |
887 | bfd_put_32 (output_bfd, nop, entry+16); | |
888 | bfd_put_32 (output_bfd, nop, entry+20); | |
889 | bfd_put_32 (output_bfd, nop, entry+24); | |
890 | bfd_put_32 (output_bfd, nop, entry+28); | |
891 | } | |
892 | ||
893 | /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of | |
894 | 160: 160 entries and 160 pointers. This is to separate code from data, | |
895 | which is much friendlier on the cache. */ | |
896 | ||
897 | for (; i < nentries; i += 160) | |
898 | { | |
899 | int block = (i + 160 <= nentries ? 160 : nentries - i); | |
900 | for (j = 0; j < block; ++j) | |
901 | { | |
902 | unsigned char *entry, *ptr; | |
903 | unsigned int ldx; | |
904 | ||
905 | entry = contents + i*PLT_ENTRY_SIZE + j*4*6; | |
906 | ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8; | |
907 | ||
908 | /* ldx [%o7 + ptr - entry+4], %g1 */ | |
909 | ldx = 0xc25be000 | ((ptr - entry+4) & 0x1fff); | |
910 | ||
911 | bfd_put_32 (output_bfd, 0x8a10000f, entry); /* mov %o7,%g5 */ | |
912 | bfd_put_32 (output_bfd, 0x40000002, entry+4); /* call .+8 */ | |
913 | bfd_put_32 (output_bfd, nop, entry+8); /* nop */ | |
914 | bfd_put_32 (output_bfd, ldx, entry+12); /* ldx [%o7+P],%g1 */ | |
915 | bfd_put_32 (output_bfd, 0x83c3c001, entry+16); /* jmpl %o7+%g1,%g1 */ | |
916 | bfd_put_32 (output_bfd, 0x9e100005, entry+20); /* mov %g5,%o7 */ | |
917 | ||
a11c78e7 | 918 | bfd_put_64 (output_bfd, contents - (entry+4), ptr); |
252b5132 RH |
919 | } |
920 | } | |
921 | } | |
922 | ||
923 | /* Return the offset of a particular plt entry within the .plt section. */ | |
924 | ||
925 | static bfd_vma | |
926 | sparc64_elf_plt_entry_offset (index) | |
927 | int index; | |
928 | { | |
929 | int block, ofs; | |
930 | ||
931 | if (index < LARGE_PLT_THRESHOLD) | |
932 | return index * PLT_ENTRY_SIZE; | |
933 | ||
934 | /* See above for details. */ | |
935 | ||
936 | block = (index - LARGE_PLT_THRESHOLD) / 160; | |
937 | ofs = (index - LARGE_PLT_THRESHOLD) % 160; | |
938 | ||
939 | return ((bfd_vma)(LARGE_PLT_THRESHOLD + block*160) * PLT_ENTRY_SIZE | |
940 | + ofs * 6*4); | |
941 | } | |
942 | ||
943 | static bfd_vma | |
944 | sparc64_elf_plt_ptr_offset (index, max) | |
945 | int index, max; | |
946 | { | |
947 | int block, ofs, last; | |
948 | ||
949 | BFD_ASSERT(index >= LARGE_PLT_THRESHOLD); | |
950 | ||
951 | /* See above for details. */ | |
952 | ||
a11c78e7 RH |
953 | block = (((index - LARGE_PLT_THRESHOLD) / 160) * 160) |
954 | + LARGE_PLT_THRESHOLD; | |
955 | ofs = index - block; | |
956 | if (block + 160 > max) | |
957 | last = (max - LARGE_PLT_THRESHOLD) % 160; | |
958 | else | |
959 | last = 160; | |
252b5132 | 960 | |
a11c78e7 | 961 | return (block * PLT_ENTRY_SIZE |
252b5132 RH |
962 | + last * 6*4 |
963 | + ofs * 8); | |
964 | } | |
965 | ||
966 | ||
967 | \f | |
968 | /* Look through the relocs for a section during the first phase, and | |
969 | allocate space in the global offset table or procedure linkage | |
970 | table. */ | |
971 | ||
972 | static boolean | |
973 | sparc64_elf_check_relocs (abfd, info, sec, relocs) | |
974 | bfd *abfd; | |
975 | struct bfd_link_info *info; | |
976 | asection *sec; | |
977 | const Elf_Internal_Rela *relocs; | |
978 | { | |
979 | bfd *dynobj; | |
980 | Elf_Internal_Shdr *symtab_hdr; | |
981 | struct elf_link_hash_entry **sym_hashes; | |
982 | bfd_vma *local_got_offsets; | |
983 | const Elf_Internal_Rela *rel; | |
984 | const Elf_Internal_Rela *rel_end; | |
985 | asection *sgot; | |
986 | asection *srelgot; | |
987 | asection *sreloc; | |
988 | ||
989 | if (info->relocateable || !(sec->flags & SEC_ALLOC)) | |
990 | return true; | |
991 | ||
992 | dynobj = elf_hash_table (info)->dynobj; | |
993 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
994 | sym_hashes = elf_sym_hashes (abfd); | |
995 | local_got_offsets = elf_local_got_offsets (abfd); | |
996 | ||
997 | sgot = NULL; | |
998 | srelgot = NULL; | |
999 | sreloc = NULL; | |
1000 | ||
1001 | rel_end = relocs + sec->reloc_count; | |
1002 | for (rel = relocs; rel < rel_end; rel++) | |
1003 | { | |
1004 | unsigned long r_symndx; | |
1005 | struct elf_link_hash_entry *h; | |
1006 | ||
1007 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1008 | if (r_symndx < symtab_hdr->sh_info) | |
1009 | h = NULL; | |
1010 | else | |
1011 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1012 | ||
f65054f7 | 1013 | switch (ELF64_R_TYPE_ID (rel->r_info)) |
252b5132 RH |
1014 | { |
1015 | case R_SPARC_GOT10: | |
1016 | case R_SPARC_GOT13: | |
1017 | case R_SPARC_GOT22: | |
1018 | /* This symbol requires a global offset table entry. */ | |
1019 | ||
1020 | if (dynobj == NULL) | |
1021 | { | |
1022 | /* Create the .got section. */ | |
1023 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1024 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
1025 | return false; | |
1026 | } | |
1027 | ||
1028 | if (sgot == NULL) | |
1029 | { | |
1030 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1031 | BFD_ASSERT (sgot != NULL); | |
1032 | } | |
1033 | ||
1034 | if (srelgot == NULL && (h != NULL || info->shared)) | |
1035 | { | |
1036 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1037 | if (srelgot == NULL) | |
1038 | { | |
1039 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
1040 | if (srelgot == NULL | |
1041 | || ! bfd_set_section_flags (dynobj, srelgot, | |
1042 | (SEC_ALLOC | |
1043 | | SEC_LOAD | |
1044 | | SEC_HAS_CONTENTS | |
1045 | | SEC_IN_MEMORY | |
1046 | | SEC_LINKER_CREATED | |
1047 | | SEC_READONLY)) | |
1048 | || ! bfd_set_section_alignment (dynobj, srelgot, 3)) | |
1049 | return false; | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | if (h != NULL) | |
1054 | { | |
1055 | if (h->got.offset != (bfd_vma) -1) | |
1056 | { | |
1057 | /* We have already allocated space in the .got. */ | |
1058 | break; | |
1059 | } | |
1060 | h->got.offset = sgot->_raw_size; | |
1061 | ||
1062 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1063 | if (h->dynindx == -1) | |
1064 | { | |
1065 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
1066 | return false; | |
1067 | } | |
1068 | ||
1069 | srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
1070 | } | |
1071 | else | |
1072 | { | |
1073 | /* This is a global offset table entry for a local | |
1074 | symbol. */ | |
1075 | if (local_got_offsets == NULL) | |
1076 | { | |
1077 | size_t size; | |
1078 | register unsigned int i; | |
1079 | ||
1080 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
1081 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
1082 | if (local_got_offsets == NULL) | |
1083 | return false; | |
1084 | elf_local_got_offsets (abfd) = local_got_offsets; | |
1085 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1086 | local_got_offsets[i] = (bfd_vma) -1; | |
1087 | } | |
1088 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
1089 | { | |
1090 | /* We have already allocated space in the .got. */ | |
1091 | break; | |
1092 | } | |
1093 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
1094 | ||
1095 | if (info->shared) | |
1096 | { | |
1097 | /* If we are generating a shared object, we need to | |
1098 | output a R_SPARC_RELATIVE reloc so that the | |
1099 | dynamic linker can adjust this GOT entry. */ | |
1100 | srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | sgot->_raw_size += 8; | |
1105 | ||
1106 | #if 0 | |
1107 | /* Doesn't work for 64-bit -fPIC, since sethi/or builds | |
1108 | unsigned numbers. If we permit ourselves to modify | |
1109 | code so we get sethi/xor, this could work. | |
1110 | Question: do we consider conditionally re-enabling | |
1111 | this for -fpic, once we know about object code models? */ | |
1112 | /* If the .got section is more than 0x1000 bytes, we add | |
1113 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 | |
1114 | bit relocations have a greater chance of working. */ | |
1115 | if (sgot->_raw_size >= 0x1000 | |
1116 | && elf_hash_table (info)->hgot->root.u.def.value == 0) | |
1117 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; | |
1118 | #endif | |
1119 | ||
1120 | break; | |
1121 | ||
1122 | case R_SPARC_WPLT30: | |
1123 | case R_SPARC_PLT32: | |
1124 | case R_SPARC_HIPLT22: | |
1125 | case R_SPARC_LOPLT10: | |
1126 | case R_SPARC_PCPLT32: | |
1127 | case R_SPARC_PCPLT22: | |
1128 | case R_SPARC_PCPLT10: | |
1129 | case R_SPARC_PLT64: | |
1130 | /* This symbol requires a procedure linkage table entry. We | |
1131 | actually build the entry in adjust_dynamic_symbol, | |
1132 | because this might be a case of linking PIC code without | |
1133 | linking in any dynamic objects, in which case we don't | |
1134 | need to generate a procedure linkage table after all. */ | |
1135 | ||
1136 | if (h == NULL) | |
1137 | { | |
1138 | /* It does not make sense to have a procedure linkage | |
1139 | table entry for a local symbol. */ | |
1140 | bfd_set_error (bfd_error_bad_value); | |
1141 | return false; | |
1142 | } | |
1143 | ||
1144 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1145 | if (h->dynindx == -1) | |
1146 | { | |
1147 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
1148 | return false; | |
1149 | } | |
1150 | ||
1151 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
1152 | break; | |
1153 | ||
1154 | case R_SPARC_PC10: | |
1155 | case R_SPARC_PC22: | |
1156 | case R_SPARC_PC_HH22: | |
1157 | case R_SPARC_PC_HM10: | |
1158 | case R_SPARC_PC_LM22: | |
1159 | if (h != NULL | |
1160 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1161 | break; | |
1162 | /* Fall through. */ | |
1163 | case R_SPARC_DISP8: | |
1164 | case R_SPARC_DISP16: | |
1165 | case R_SPARC_DISP32: | |
1166 | case R_SPARC_DISP64: | |
1167 | case R_SPARC_WDISP30: | |
1168 | case R_SPARC_WDISP22: | |
1169 | case R_SPARC_WDISP19: | |
1170 | case R_SPARC_WDISP16: | |
1171 | if (h == NULL) | |
1172 | break; | |
1173 | /* Fall through. */ | |
1174 | case R_SPARC_8: | |
1175 | case R_SPARC_16: | |
1176 | case R_SPARC_32: | |
1177 | case R_SPARC_HI22: | |
1178 | case R_SPARC_22: | |
1179 | case R_SPARC_13: | |
1180 | case R_SPARC_LO10: | |
1181 | case R_SPARC_UA32: | |
1182 | case R_SPARC_10: | |
1183 | case R_SPARC_11: | |
1184 | case R_SPARC_64: | |
1185 | case R_SPARC_OLO10: | |
1186 | case R_SPARC_HH22: | |
1187 | case R_SPARC_HM10: | |
1188 | case R_SPARC_LM22: | |
1189 | case R_SPARC_7: | |
1190 | case R_SPARC_5: | |
1191 | case R_SPARC_6: | |
1192 | case R_SPARC_HIX22: | |
1193 | case R_SPARC_LOX10: | |
1194 | case R_SPARC_H44: | |
1195 | case R_SPARC_M44: | |
1196 | case R_SPARC_L44: | |
1197 | case R_SPARC_UA64: | |
1198 | case R_SPARC_UA16: | |
1199 | /* When creating a shared object, we must copy these relocs | |
1200 | into the output file. We create a reloc section in | |
1201 | dynobj and make room for the reloc. | |
1202 | ||
1203 | But don't do this for debugging sections -- this shows up | |
1204 | with DWARF2 -- first because they are not loaded, and | |
1205 | second because DWARF sez the debug info is not to be | |
1206 | biased by the load address. */ | |
1207 | if (info->shared && (sec->flags & SEC_ALLOC)) | |
1208 | { | |
1209 | if (sreloc == NULL) | |
1210 | { | |
1211 | const char *name; | |
1212 | ||
1213 | name = (bfd_elf_string_from_elf_section | |
1214 | (abfd, | |
1215 | elf_elfheader (abfd)->e_shstrndx, | |
1216 | elf_section_data (sec)->rel_hdr.sh_name)); | |
1217 | if (name == NULL) | |
1218 | return false; | |
1219 | ||
1220 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1221 | && strcmp (bfd_get_section_name (abfd, sec), | |
1222 | name + 5) == 0); | |
1223 | ||
1224 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1225 | if (sreloc == NULL) | |
1226 | { | |
1227 | flagword flags; | |
1228 | ||
1229 | sreloc = bfd_make_section (dynobj, name); | |
1230 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1231 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1232 | if ((sec->flags & SEC_ALLOC) != 0) | |
1233 | flags |= SEC_ALLOC | SEC_LOAD; | |
1234 | if (sreloc == NULL | |
1235 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
1236 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) | |
1237 | return false; | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | sreloc->_raw_size += sizeof (Elf64_External_Rela); | |
1242 | } | |
1243 | break; | |
1244 | ||
1245 | case R_SPARC_REGISTER: | |
1246 | /* Nothing to do. */ | |
1247 | break; | |
1248 | ||
1249 | default: | |
1250 | (*_bfd_error_handler)(_("%s: check_relocs: unhandled reloc type %d"), | |
1251 | bfd_get_filename(abfd), | |
f65054f7 | 1252 | ELF64_R_TYPE_ID (rel->r_info)); |
252b5132 RH |
1253 | return false; |
1254 | } | |
1255 | } | |
1256 | ||
1257 | return true; | |
1258 | } | |
1259 | ||
587ff49e RH |
1260 | /* Hook called by the linker routine which adds symbols from an object |
1261 | file. We use it for STT_REGISTER symbols. */ | |
1262 | ||
1263 | static boolean | |
1264 | sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
1265 | bfd *abfd; | |
1266 | struct bfd_link_info *info; | |
1267 | const Elf_Internal_Sym *sym; | |
1268 | const char **namep; | |
6c08d697 JJ |
1269 | flagword *flagsp ATTRIBUTE_UNUSED; |
1270 | asection **secp ATTRIBUTE_UNUSED; | |
1271 | bfd_vma *valp ATTRIBUTE_UNUSED; | |
587ff49e RH |
1272 | { |
1273 | static char *stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" }; | |
1274 | ||
1275 | if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER) | |
1276 | { | |
1277 | int reg; | |
1278 | struct sparc64_elf_app_reg *p; | |
1279 | ||
1280 | reg = (int)sym->st_value; | |
1281 | switch (reg & ~1) | |
1282 | { | |
1283 | case 2: reg -= 2; break; | |
1284 | case 6: reg -= 4; break; | |
1285 | default: | |
1286 | (*_bfd_error_handler) | |
1287 | (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"), | |
1288 | bfd_get_filename (abfd)); | |
1289 | return false; | |
1290 | } | |
1291 | ||
1292 | if (info->hash->creator != abfd->xvec | |
1293 | || (abfd->flags & DYNAMIC) != 0) | |
1294 | { | |
1295 | /* STT_REGISTER only works when linking an elf64_sparc object. | |
1296 | If STT_REGISTER comes from a dynamic object, don't put it into | |
1297 | the output bfd. The dynamic linker will recheck it. */ | |
1298 | *namep = NULL; | |
1299 | return true; | |
1300 | } | |
1301 | ||
1302 | p = sparc64_elf_hash_table(info)->app_regs + reg; | |
1303 | ||
1304 | if (p->name != NULL && strcmp (p->name, *namep)) | |
1305 | { | |
1306 | (*_bfd_error_handler) | |
1307 | (_("Register %%g%d used incompatibly: " | |
1308 | "previously declared in %s to %s, in %s redefined to %s"), | |
1309 | (int)sym->st_value, | |
1310 | bfd_get_filename (p->abfd), *p->name ? p->name : "#scratch", | |
1311 | bfd_get_filename (abfd), **namep ? *namep : "#scratch"); | |
1312 | return false; | |
1313 | } | |
1314 | ||
1315 | if (p->name == NULL) | |
1316 | { | |
1317 | if (**namep) | |
1318 | { | |
1319 | struct elf_link_hash_entry *h; | |
1320 | ||
1321 | h = (struct elf_link_hash_entry *) | |
1322 | bfd_link_hash_lookup (info->hash, *namep, false, false, false); | |
1323 | ||
1324 | if (h != NULL) | |
1325 | { | |
1326 | unsigned char type = h->type; | |
1327 | ||
1328 | if (type > STT_FUNC) type = 0; | |
1329 | (*_bfd_error_handler) | |
1330 | (_("Symbol `%s' has differing types: " | |
1331 | "previously %s, REGISTER in %s"), | |
1332 | *namep, stt_types [type], bfd_get_filename (abfd)); | |
1333 | return false; | |
1334 | } | |
1335 | ||
1336 | p->name = bfd_hash_allocate (&info->hash->table, | |
1337 | strlen (*namep) + 1); | |
1338 | if (!p->name) | |
1339 | return false; | |
1340 | ||
1341 | strcpy (p->name, *namep); | |
1342 | } | |
1343 | else | |
1344 | p->name = ""; | |
1345 | p->bind = ELF_ST_BIND (sym->st_info); | |
1346 | p->abfd = abfd; | |
1347 | p->shndx = sym->st_shndx; | |
1348 | } | |
1349 | else | |
1350 | { | |
1351 | if (p->bind == STB_WEAK | |
1352 | && ELF_ST_BIND (sym->st_info) == STB_GLOBAL) | |
1353 | { | |
1354 | p->bind = STB_GLOBAL; | |
1355 | p->abfd = abfd; | |
1356 | } | |
1357 | } | |
1358 | *namep = NULL; | |
1359 | return true; | |
1360 | } | |
1361 | else if (! *namep || ! **namep) | |
1362 | return true; | |
1363 | else | |
1364 | { | |
1365 | int i; | |
1366 | struct sparc64_elf_app_reg *p; | |
1367 | ||
1368 | p = sparc64_elf_hash_table(info)->app_regs; | |
1369 | for (i = 0; i < 4; i++, p++) | |
1370 | if (p->name != NULL && ! strcmp (p->name, *namep)) | |
1371 | { | |
1372 | unsigned char type = ELF_ST_TYPE (sym->st_info); | |
1373 | ||
1374 | if (type > STT_FUNC) type = 0; | |
1375 | (*_bfd_error_handler) | |
1376 | (_("Symbol `%s' has differing types: " | |
1377 | "REGISTER in %s, %s in %s"), | |
1378 | *namep, bfd_get_filename (p->abfd), stt_types [type], | |
1379 | bfd_get_filename (abfd)); | |
1380 | return false; | |
1381 | } | |
1382 | } | |
1383 | return true; | |
1384 | } | |
1385 | ||
1386 | /* This function takes care of emiting STT_REGISTER symbols | |
1387 | which we cannot easily keep in the symbol hash table. */ | |
1388 | ||
1389 | static boolean | |
1390 | sparc64_elf_output_arch_syms (output_bfd, info, finfo, func) | |
6c08d697 | 1391 | bfd *output_bfd ATTRIBUTE_UNUSED; |
587ff49e RH |
1392 | struct bfd_link_info *info; |
1393 | PTR finfo; | |
1394 | boolean (*func) PARAMS ((PTR, const char *, | |
1395 | Elf_Internal_Sym *, asection *)); | |
1396 | { | |
1397 | int reg; | |
1398 | struct sparc64_elf_app_reg *app_regs = | |
1399 | sparc64_elf_hash_table(info)->app_regs; | |
1400 | Elf_Internal_Sym sym; | |
1401 | ||
1402 | /* We arranged in size_dynamic_sections to put the STT_REGISTER entries | |
1403 | at the end of the dynlocal list, so they came at the end of the local | |
1404 | symbols in the symtab. Except that they aren't STB_LOCAL, so we need | |
1405 | to back up symtab->sh_info. */ | |
1406 | if (elf_hash_table (info)->dynlocal) | |
1407 | { | |
1fa0ddb3 RH |
1408 | bfd * dynobj = elf_hash_table (info)->dynobj; |
1409 | asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym"); | |
587ff49e RH |
1410 | struct elf_link_local_dynamic_entry *e; |
1411 | ||
1412 | for (e = elf_hash_table (info)->dynlocal; e ; e = e->next) | |
1413 | if (e->input_indx == -1) | |
1414 | break; | |
1415 | if (e) | |
1416 | { | |
1417 | elf_section_data (dynsymsec->output_section)->this_hdr.sh_info | |
1418 | = e->dynindx; | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | if (info->strip == strip_all) | |
1423 | return true; | |
1424 | ||
1425 | for (reg = 0; reg < 4; reg++) | |
1426 | if (app_regs [reg].name != NULL) | |
1427 | { | |
1428 | if (info->strip == strip_some | |
1429 | && bfd_hash_lookup (info->keep_hash, | |
1430 | app_regs [reg].name, | |
1431 | false, false) == NULL) | |
1432 | continue; | |
1433 | ||
1434 | sym.st_value = reg < 2 ? reg + 2 : reg + 4; | |
1435 | sym.st_size = 0; | |
1436 | sym.st_other = 0; | |
1437 | sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER); | |
1438 | sym.st_shndx = app_regs [reg].shndx; | |
1439 | if (! (*func) (finfo, app_regs [reg].name, &sym, | |
1440 | sym.st_shndx == SHN_ABS | |
1441 | ? bfd_abs_section_ptr : bfd_und_section_ptr)) | |
1442 | return false; | |
1443 | } | |
1444 | ||
1445 | return true; | |
1446 | } | |
1447 | ||
1448 | static int | |
1449 | sparc64_elf_get_symbol_type (elf_sym, type) | |
1450 | Elf_Internal_Sym * elf_sym; | |
1451 | int type; | |
1452 | { | |
1453 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER) | |
1454 | return STT_REGISTER; | |
1455 | else | |
1456 | return type; | |
1457 | } | |
1458 | ||
1459 | /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL | |
1460 | even in SHN_UNDEF section. */ | |
1461 | ||
1462 | static void | |
1463 | sparc64_elf_symbol_processing (abfd, asym) | |
6c08d697 | 1464 | bfd *abfd ATTRIBUTE_UNUSED; |
587ff49e RH |
1465 | asymbol *asym; |
1466 | { | |
1467 | elf_symbol_type *elfsym; | |
1468 | ||
1469 | elfsym = (elf_symbol_type *) asym; | |
1470 | if (elfsym->internal_elf_sym.st_info | |
1471 | == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER)) | |
1472 | { | |
1473 | asym->flags |= BSF_GLOBAL; | |
1474 | } | |
1475 | } | |
1476 | ||
252b5132 RH |
1477 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1478 | regular object. The current definition is in some section of the | |
1479 | dynamic object, but we're not including those sections. We have to | |
1480 | change the definition to something the rest of the link can | |
1481 | understand. */ | |
1482 | ||
1483 | static boolean | |
1484 | sparc64_elf_adjust_dynamic_symbol (info, h) | |
1485 | struct bfd_link_info *info; | |
1486 | struct elf_link_hash_entry *h; | |
1487 | { | |
1488 | bfd *dynobj; | |
1489 | asection *s; | |
1490 | unsigned int power_of_two; | |
1491 | ||
1492 | dynobj = elf_hash_table (info)->dynobj; | |
1493 | ||
1494 | /* Make sure we know what is going on here. */ | |
1495 | BFD_ASSERT (dynobj != NULL | |
1496 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
1497 | || h->weakdef != NULL | |
1498 | || ((h->elf_link_hash_flags | |
1499 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1500 | && (h->elf_link_hash_flags | |
1501 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
1502 | && (h->elf_link_hash_flags | |
1503 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
1504 | ||
1505 | /* If this is a function, put it in the procedure linkage table. We | |
1506 | will fill in the contents of the procedure linkage table later | |
1507 | (although we could actually do it here). The STT_NOTYPE | |
1508 | condition is a hack specifically for the Oracle libraries | |
1509 | delivered for Solaris; for some inexplicable reason, they define | |
1510 | some of their functions as STT_NOTYPE when they really should be | |
1511 | STT_FUNC. */ | |
1512 | if (h->type == STT_FUNC | |
1513 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 | |
1514 | || (h->type == STT_NOTYPE | |
1515 | && (h->root.type == bfd_link_hash_defined | |
1516 | || h->root.type == bfd_link_hash_defweak) | |
1517 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) | |
1518 | { | |
1519 | if (! elf_hash_table (info)->dynamic_sections_created) | |
1520 | { | |
1521 | /* This case can occur if we saw a WPLT30 reloc in an input | |
1522 | file, but none of the input files were dynamic objects. | |
1523 | In such a case, we don't actually need to build a | |
1524 | procedure linkage table, and we can just do a WDISP30 | |
1525 | reloc instead. */ | |
1526 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
1527 | return true; | |
1528 | } | |
1529 | ||
1530 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1531 | BFD_ASSERT (s != NULL); | |
1532 | ||
1533 | /* The first four bit in .plt is reserved. */ | |
1534 | if (s->_raw_size == 0) | |
1535 | s->_raw_size = PLT_HEADER_SIZE; | |
1536 | ||
1537 | /* If this symbol is not defined in a regular file, and we are | |
1538 | not generating a shared library, then set the symbol to this | |
1539 | location in the .plt. This is required to make function | |
1540 | pointers compare as equal between the normal executable and | |
1541 | the shared library. */ | |
1542 | if (! info->shared | |
1543 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1544 | { | |
1545 | h->root.u.def.section = s; | |
1546 | h->root.u.def.value = s->_raw_size; | |
1547 | } | |
1548 | ||
1549 | /* To simplify matters later, just store the plt index here. */ | |
1550 | h->plt.offset = s->_raw_size / PLT_ENTRY_SIZE; | |
1551 | ||
1552 | /* Make room for this entry. */ | |
1553 | s->_raw_size += PLT_ENTRY_SIZE; | |
1554 | ||
1555 | /* We also need to make an entry in the .rela.plt section. */ | |
1556 | ||
1557 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1558 | BFD_ASSERT (s != NULL); | |
1559 | ||
1560 | /* The first plt entries are reserved, and the relocations must | |
1561 | pair up exactly. */ | |
1562 | if (s->_raw_size == 0) | |
1563 | s->_raw_size += (PLT_HEADER_SIZE/PLT_ENTRY_SIZE | |
1564 | * sizeof (Elf64_External_Rela)); | |
1565 | ||
1566 | s->_raw_size += sizeof (Elf64_External_Rela); | |
1567 | ||
1568 | /* The procedure linkage table size is bounded by the magnitude | |
1569 | of the offset we can describe in the entry. */ | |
1570 | if (s->_raw_size >= (bfd_vma)1 << 32) | |
1571 | { | |
1572 | bfd_set_error (bfd_error_bad_value); | |
1573 | return false; | |
1574 | } | |
1575 | ||
1576 | return true; | |
1577 | } | |
1578 | ||
1579 | /* If this is a weak symbol, and there is a real definition, the | |
1580 | processor independent code will have arranged for us to see the | |
1581 | real definition first, and we can just use the same value. */ | |
1582 | if (h->weakdef != NULL) | |
1583 | { | |
1584 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1585 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1586 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1587 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1588 | return true; | |
1589 | } | |
1590 | ||
1591 | /* This is a reference to a symbol defined by a dynamic object which | |
1592 | is not a function. */ | |
1593 | ||
1594 | /* If we are creating a shared library, we must presume that the | |
1595 | only references to the symbol are via the global offset table. | |
1596 | For such cases we need not do anything here; the relocations will | |
1597 | be handled correctly by relocate_section. */ | |
1598 | if (info->shared) | |
1599 | return true; | |
1600 | ||
1601 | /* We must allocate the symbol in our .dynbss section, which will | |
1602 | become part of the .bss section of the executable. There will be | |
1603 | an entry for this symbol in the .dynsym section. The dynamic | |
1604 | object will contain position independent code, so all references | |
1605 | from the dynamic object to this symbol will go through the global | |
1606 | offset table. The dynamic linker will use the .dynsym entry to | |
1607 | determine the address it must put in the global offset table, so | |
1608 | both the dynamic object and the regular object will refer to the | |
1609 | same memory location for the variable. */ | |
1610 | ||
1611 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1612 | BFD_ASSERT (s != NULL); | |
1613 | ||
1614 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker | |
1615 | to copy the initial value out of the dynamic object and into the | |
1616 | runtime process image. We need to remember the offset into the | |
1617 | .rel.bss section we are going to use. */ | |
1618 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1619 | { | |
1620 | asection *srel; | |
1621 | ||
1622 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1623 | BFD_ASSERT (srel != NULL); | |
1624 | srel->_raw_size += sizeof (Elf64_External_Rela); | |
1625 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
1626 | } | |
1627 | ||
1628 | /* We need to figure out the alignment required for this symbol. I | |
1629 | have no idea how ELF linkers handle this. 16-bytes is the size | |
1630 | of the largest type that requires hard alignment -- long double. */ | |
1631 | power_of_two = bfd_log2 (h->size); | |
1632 | if (power_of_two > 4) | |
1633 | power_of_two = 4; | |
1634 | ||
1635 | /* Apply the required alignment. */ | |
1636 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
1637 | (bfd_size_type) (1 << power_of_two)); | |
1638 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
1639 | { | |
1640 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
1641 | return false; | |
1642 | } | |
1643 | ||
1644 | /* Define the symbol as being at this point in the section. */ | |
1645 | h->root.u.def.section = s; | |
1646 | h->root.u.def.value = s->_raw_size; | |
1647 | ||
1648 | /* Increment the section size to make room for the symbol. */ | |
1649 | s->_raw_size += h->size; | |
1650 | ||
1651 | return true; | |
1652 | } | |
1653 | ||
1654 | /* Set the sizes of the dynamic sections. */ | |
1655 | ||
1656 | static boolean | |
1657 | sparc64_elf_size_dynamic_sections (output_bfd, info) | |
1658 | bfd *output_bfd; | |
1659 | struct bfd_link_info *info; | |
1660 | { | |
1661 | bfd *dynobj; | |
1662 | asection *s; | |
1663 | boolean reltext; | |
1664 | boolean relplt; | |
1665 | ||
1666 | dynobj = elf_hash_table (info)->dynobj; | |
1667 | BFD_ASSERT (dynobj != NULL); | |
1668 | ||
1669 | if (elf_hash_table (info)->dynamic_sections_created) | |
1670 | { | |
1671 | /* Set the contents of the .interp section to the interpreter. */ | |
1672 | if (! info->shared) | |
1673 | { | |
1674 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1675 | BFD_ASSERT (s != NULL); | |
1676 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1677 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1678 | } | |
1679 | } | |
1680 | else | |
1681 | { | |
1682 | /* We may have created entries in the .rela.got section. | |
1683 | However, if we are not creating the dynamic sections, we will | |
1684 | not actually use these entries. Reset the size of .rela.got, | |
1685 | which will cause it to get stripped from the output file | |
1686 | below. */ | |
1687 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1688 | if (s != NULL) | |
1689 | s->_raw_size = 0; | |
1690 | } | |
1691 | ||
1692 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1693 | determined the sizes of the various dynamic sections. Allocate | |
1694 | memory for them. */ | |
1695 | reltext = false; | |
1696 | relplt = false; | |
1697 | for (s = dynobj->sections; s != NULL; s = s->next) | |
1698 | { | |
1699 | const char *name; | |
1700 | boolean strip; | |
1701 | ||
1702 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1703 | continue; | |
1704 | ||
1705 | /* It's OK to base decisions on the section name, because none | |
1706 | of the dynobj section names depend upon the input files. */ | |
1707 | name = bfd_get_section_name (dynobj, s); | |
1708 | ||
1709 | strip = false; | |
1710 | ||
1711 | if (strncmp (name, ".rela", 5) == 0) | |
1712 | { | |
1713 | if (s->_raw_size == 0) | |
1714 | { | |
1715 | /* If we don't need this section, strip it from the | |
1716 | output file. This is to handle .rela.bss and | |
1717 | .rel.plt. We must create it in | |
1718 | create_dynamic_sections, because it must be created | |
1719 | before the linker maps input sections to output | |
1720 | sections. The linker does that before | |
1721 | adjust_dynamic_symbol is called, and it is that | |
1722 | function which decides whether anything needs to go | |
1723 | into these sections. */ | |
1724 | strip = true; | |
1725 | } | |
1726 | else | |
1727 | { | |
1728 | const char *outname; | |
1729 | asection *target; | |
1730 | ||
1731 | /* If this relocation section applies to a read only | |
1732 | section, then we probably need a DT_TEXTREL entry. */ | |
1733 | outname = bfd_get_section_name (output_bfd, | |
1734 | s->output_section); | |
1735 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1736 | if (target != NULL | |
1737 | && (target->flags & SEC_READONLY) != 0) | |
1738 | reltext = true; | |
1739 | ||
1740 | if (strcmp (name, ".rela.plt") == 0) | |
1741 | relplt = true; | |
1742 | ||
1743 | /* We use the reloc_count field as a counter if we need | |
1744 | to copy relocs into the output file. */ | |
1745 | s->reloc_count = 0; | |
1746 | } | |
1747 | } | |
1748 | else if (strcmp (name, ".plt") != 0 | |
1749 | && strncmp (name, ".got", 4) != 0) | |
1750 | { | |
1751 | /* It's not one of our sections, so don't allocate space. */ | |
1752 | continue; | |
1753 | } | |
1754 | ||
1755 | if (strip) | |
1756 | { | |
7f8d5fc9 | 1757 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1758 | continue; |
1759 | } | |
1760 | ||
1761 | /* Allocate memory for the section contents. Zero the memory | |
1762 | for the benefit of .rela.plt, which has 4 unused entries | |
1763 | at the beginning, and we don't want garbage. */ | |
1764 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
1765 | if (s->contents == NULL && s->_raw_size != 0) | |
1766 | return false; | |
1767 | } | |
1768 | ||
1769 | if (elf_hash_table (info)->dynamic_sections_created) | |
1770 | { | |
1771 | /* Add some entries to the .dynamic section. We fill in the | |
1772 | values later, in sparc64_elf_finish_dynamic_sections, but we | |
1773 | must add the entries now so that we get the correct size for | |
1774 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1775 | dynamic linker and used by the debugger. */ | |
587ff49e RH |
1776 | int reg; |
1777 | struct sparc64_elf_app_reg * app_regs; | |
1778 | struct bfd_strtab_hash *dynstr; | |
1779 | struct elf_link_hash_table *eht = elf_hash_table (info); | |
1780 | ||
252b5132 RH |
1781 | if (! info->shared) |
1782 | { | |
1783 | if (! bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) | |
1784 | return false; | |
1785 | } | |
1786 | ||
1787 | if (relplt) | |
1788 | { | |
1789 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0) | |
1790 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
1791 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
d6bcbdc1 | 1792 | || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) |
252b5132 RH |
1793 | return false; |
1794 | } | |
1795 | ||
1796 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) | |
1797 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) | |
1798 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, | |
1799 | sizeof (Elf64_External_Rela))) | |
1800 | return false; | |
1801 | ||
1802 | if (reltext) | |
1803 | { | |
1804 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
1805 | return false; | |
1806 | } | |
587ff49e RH |
1807 | |
1808 | /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER | |
1809 | entries if needed. */ | |
1810 | app_regs = sparc64_elf_hash_table (info)->app_regs; | |
1811 | dynstr = eht->dynstr; | |
1812 | ||
1813 | for (reg = 0; reg < 4; reg++) | |
1814 | if (app_regs [reg].name != NULL) | |
1815 | { | |
1816 | struct elf_link_local_dynamic_entry *entry, *e; | |
1817 | ||
1818 | if (! bfd_elf64_add_dynamic_entry (info, DT_SPARC_REGISTER, 0)) | |
1819 | return false; | |
1820 | ||
1821 | entry = (struct elf_link_local_dynamic_entry *) | |
1822 | bfd_hash_allocate (&info->hash->table, sizeof (*entry)); | |
1823 | if (entry == NULL) | |
1824 | return false; | |
1825 | ||
1826 | /* We cheat here a little bit: the symbol will not be local, so we | |
1827 | put it at the end of the dynlocal linked list. We will fix it | |
1828 | later on, as we have to fix other fields anyway. */ | |
1829 | entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; | |
1830 | entry->isym.st_size = 0; | |
1831 | if (*app_regs [reg].name != '\0') | |
1832 | entry->isym.st_name | |
1833 | = _bfd_stringtab_add (dynstr, app_regs[reg].name, true, false); | |
1834 | else | |
1835 | entry->isym.st_name = 0; | |
1836 | entry->isym.st_other = 0; | |
1837 | entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, | |
1838 | STT_REGISTER); | |
1839 | entry->isym.st_shndx = app_regs [reg].shndx; | |
1840 | entry->next = NULL; | |
1841 | entry->input_bfd = output_bfd; | |
1842 | entry->input_indx = -1; | |
1843 | ||
1844 | if (eht->dynlocal == NULL) | |
1845 | eht->dynlocal = entry; | |
1846 | else | |
1847 | { | |
1848 | for (e = eht->dynlocal; e->next; e = e->next) | |
1849 | ; | |
1850 | e->next = entry; | |
1851 | } | |
1852 | eht->dynsymcount++; | |
1853 | } | |
252b5132 RH |
1854 | } |
1855 | ||
252b5132 RH |
1856 | return true; |
1857 | } | |
252b5132 | 1858 | \f |
f7775d95 JJ |
1859 | #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0) |
1860 | #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1) | |
1861 | ||
1862 | /*ARGSUSED*/ | |
1863 | static boolean | |
1864 | sparc64_elf_relax_section (abfd, section, link_info, again) | |
1865 | bfd *abfd ATTRIBUTE_UNUSED; | |
1866 | asection *section ATTRIBUTE_UNUSED; | |
1867 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
1868 | boolean *again; | |
1869 | { | |
1870 | *again = false; | |
1871 | SET_SEC_DO_RELAX (section); | |
1872 | return true; | |
1873 | } | |
1874 | \f | |
252b5132 RH |
1875 | /* Relocate a SPARC64 ELF section. */ |
1876 | ||
1877 | static boolean | |
1878 | sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
1879 | contents, relocs, local_syms, local_sections) | |
1880 | bfd *output_bfd; | |
1881 | struct bfd_link_info *info; | |
1882 | bfd *input_bfd; | |
1883 | asection *input_section; | |
1884 | bfd_byte *contents; | |
1885 | Elf_Internal_Rela *relocs; | |
1886 | Elf_Internal_Sym *local_syms; | |
1887 | asection **local_sections; | |
1888 | { | |
1889 | bfd *dynobj; | |
1890 | Elf_Internal_Shdr *symtab_hdr; | |
1891 | struct elf_link_hash_entry **sym_hashes; | |
1892 | bfd_vma *local_got_offsets; | |
1893 | bfd_vma got_base; | |
1894 | asection *sgot; | |
1895 | asection *splt; | |
1896 | asection *sreloc; | |
1897 | Elf_Internal_Rela *rel; | |
1898 | Elf_Internal_Rela *relend; | |
1899 | ||
1900 | dynobj = elf_hash_table (info)->dynobj; | |
1901 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1902 | sym_hashes = elf_sym_hashes (input_bfd); | |
1903 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1904 | ||
1905 | if (elf_hash_table(info)->hgot == NULL) | |
1906 | got_base = 0; | |
1907 | else | |
1908 | got_base = elf_hash_table (info)->hgot->root.u.def.value; | |
1909 | ||
1910 | sgot = splt = sreloc = NULL; | |
1911 | ||
1912 | rel = relocs; | |
1913 | relend = relocs + input_section->reloc_count; | |
1914 | for (; rel < relend; rel++) | |
1915 | { | |
1916 | int r_type; | |
1917 | reloc_howto_type *howto; | |
6c08d697 | 1918 | unsigned long r_symndx; |
252b5132 RH |
1919 | struct elf_link_hash_entry *h; |
1920 | Elf_Internal_Sym *sym; | |
1921 | asection *sec; | |
1922 | bfd_vma relocation; | |
1923 | bfd_reloc_status_type r; | |
1924 | ||
f65054f7 | 1925 | r_type = ELF64_R_TYPE_ID (rel->r_info); |
60dac299 | 1926 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
252b5132 RH |
1927 | { |
1928 | bfd_set_error (bfd_error_bad_value); | |
1929 | return false; | |
1930 | } | |
1931 | howto = sparc64_elf_howto_table + r_type; | |
1932 | ||
1933 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1934 | ||
1935 | if (info->relocateable) | |
1936 | { | |
1937 | /* This is a relocateable link. We don't have to change | |
1938 | anything, unless the reloc is against a section symbol, | |
1939 | in which case we have to adjust according to where the | |
1940 | section symbol winds up in the output section. */ | |
1941 | if (r_symndx < symtab_hdr->sh_info) | |
1942 | { | |
1943 | sym = local_syms + r_symndx; | |
1944 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1945 | { | |
1946 | sec = local_sections[r_symndx]; | |
1947 | rel->r_addend += sec->output_offset + sym->st_value; | |
1948 | } | |
1949 | } | |
1950 | ||
1951 | continue; | |
1952 | } | |
1953 | ||
1954 | /* This is a final link. */ | |
1955 | h = NULL; | |
1956 | sym = NULL; | |
1957 | sec = NULL; | |
1958 | if (r_symndx < symtab_hdr->sh_info) | |
1959 | { | |
1960 | sym = local_syms + r_symndx; | |
1961 | sec = local_sections[r_symndx]; | |
1962 | relocation = (sec->output_section->vma | |
1963 | + sec->output_offset | |
1964 | + sym->st_value); | |
1965 | } | |
1966 | else | |
1967 | { | |
1968 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1969 | while (h->root.type == bfd_link_hash_indirect | |
1970 | || h->root.type == bfd_link_hash_warning) | |
1971 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1972 | if (h->root.type == bfd_link_hash_defined | |
1973 | || h->root.type == bfd_link_hash_defweak) | |
1974 | { | |
1975 | boolean skip_it = false; | |
1976 | sec = h->root.u.def.section; | |
1977 | ||
1978 | switch (r_type) | |
1979 | { | |
1980 | case R_SPARC_WPLT30: | |
1981 | case R_SPARC_PLT32: | |
1982 | case R_SPARC_HIPLT22: | |
1983 | case R_SPARC_LOPLT10: | |
1984 | case R_SPARC_PCPLT32: | |
1985 | case R_SPARC_PCPLT22: | |
1986 | case R_SPARC_PCPLT10: | |
1987 | case R_SPARC_PLT64: | |
1988 | if (h->plt.offset != (bfd_vma) -1) | |
1989 | skip_it = true; | |
1990 | break; | |
1991 | ||
1992 | case R_SPARC_GOT10: | |
1993 | case R_SPARC_GOT13: | |
1994 | case R_SPARC_GOT22: | |
1995 | if (elf_hash_table(info)->dynamic_sections_created | |
1996 | && (!info->shared | |
1997 | || (!info->symbolic && h->dynindx != -1) | |
1998 | || !(h->elf_link_hash_flags | |
1999 | & ELF_LINK_HASH_DEF_REGULAR))) | |
2000 | skip_it = true; | |
2001 | break; | |
2002 | ||
2003 | case R_SPARC_PC10: | |
2004 | case R_SPARC_PC22: | |
2005 | case R_SPARC_PC_HH22: | |
2006 | case R_SPARC_PC_HM10: | |
2007 | case R_SPARC_PC_LM22: | |
2008 | if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) | |
2009 | break; | |
2010 | /* FALLTHRU */ | |
2011 | ||
2012 | case R_SPARC_8: | |
2013 | case R_SPARC_16: | |
2014 | case R_SPARC_32: | |
2015 | case R_SPARC_DISP8: | |
2016 | case R_SPARC_DISP16: | |
2017 | case R_SPARC_DISP32: | |
2018 | case R_SPARC_WDISP30: | |
2019 | case R_SPARC_WDISP22: | |
2020 | case R_SPARC_HI22: | |
2021 | case R_SPARC_22: | |
2022 | case R_SPARC_13: | |
2023 | case R_SPARC_LO10: | |
2024 | case R_SPARC_UA32: | |
2025 | case R_SPARC_10: | |
2026 | case R_SPARC_11: | |
2027 | case R_SPARC_64: | |
2028 | case R_SPARC_OLO10: | |
2029 | case R_SPARC_HH22: | |
2030 | case R_SPARC_HM10: | |
2031 | case R_SPARC_LM22: | |
2032 | case R_SPARC_WDISP19: | |
2033 | case R_SPARC_WDISP16: | |
2034 | case R_SPARC_7: | |
2035 | case R_SPARC_5: | |
2036 | case R_SPARC_6: | |
2037 | case R_SPARC_DISP64: | |
2038 | case R_SPARC_HIX22: | |
2039 | case R_SPARC_LOX10: | |
2040 | case R_SPARC_H44: | |
2041 | case R_SPARC_M44: | |
2042 | case R_SPARC_L44: | |
2043 | case R_SPARC_UA64: | |
2044 | case R_SPARC_UA16: | |
2045 | if (info->shared | |
2046 | && ((!info->symbolic && h->dynindx != -1) | |
2047 | || !(h->elf_link_hash_flags | |
2048 | & ELF_LINK_HASH_DEF_REGULAR))) | |
2049 | skip_it = true; | |
2050 | break; | |
2051 | } | |
2052 | ||
2053 | if (skip_it) | |
2054 | { | |
2055 | /* In these cases, we don't need the relocation | |
2056 | value. We check specially because in some | |
2057 | obscure cases sec->output_section will be NULL. */ | |
2058 | relocation = 0; | |
2059 | } | |
2060 | else | |
2061 | { | |
2062 | relocation = (h->root.u.def.value | |
2063 | + sec->output_section->vma | |
2064 | + sec->output_offset); | |
2065 | } | |
2066 | } | |
2067 | else if (h->root.type == bfd_link_hash_undefweak) | |
2068 | relocation = 0; | |
3a27a730 L |
2069 | else if (info->shared && !info->symbolic |
2070 | && !info->no_undefined | |
2071 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
252b5132 RH |
2072 | relocation = 0; |
2073 | else | |
2074 | { | |
2075 | if (! ((*info->callbacks->undefined_symbol) | |
2076 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 2077 | input_section, rel->r_offset, |
3a27a730 L |
2078 | (!info->shared || info->no_undefined |
2079 | || ELF_ST_VISIBILITY (h->other))))) | |
252b5132 RH |
2080 | return false; |
2081 | relocation = 0; | |
2082 | } | |
2083 | } | |
2084 | ||
2085 | /* When generating a shared object, these relocations are copied | |
2086 | into the output file to be resolved at run time. */ | |
2087 | if (info->shared && (input_section->flags & SEC_ALLOC)) | |
2088 | { | |
2089 | switch (r_type) | |
2090 | { | |
2091 | case R_SPARC_PC10: | |
2092 | case R_SPARC_PC22: | |
2093 | case R_SPARC_PC_HH22: | |
2094 | case R_SPARC_PC_HM10: | |
2095 | case R_SPARC_PC_LM22: | |
2096 | if (h != NULL | |
2097 | && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) | |
2098 | break; | |
2099 | /* Fall through. */ | |
2100 | case R_SPARC_DISP8: | |
2101 | case R_SPARC_DISP16: | |
2102 | case R_SPARC_DISP32: | |
2103 | case R_SPARC_WDISP30: | |
2104 | case R_SPARC_WDISP22: | |
2105 | case R_SPARC_WDISP19: | |
2106 | case R_SPARC_WDISP16: | |
2107 | case R_SPARC_DISP64: | |
2108 | if (h == NULL) | |
2109 | break; | |
2110 | /* Fall through. */ | |
2111 | case R_SPARC_8: | |
2112 | case R_SPARC_16: | |
2113 | case R_SPARC_32: | |
2114 | case R_SPARC_HI22: | |
2115 | case R_SPARC_22: | |
2116 | case R_SPARC_13: | |
2117 | case R_SPARC_LO10: | |
2118 | case R_SPARC_UA32: | |
2119 | case R_SPARC_10: | |
2120 | case R_SPARC_11: | |
2121 | case R_SPARC_64: | |
2122 | case R_SPARC_OLO10: | |
2123 | case R_SPARC_HH22: | |
2124 | case R_SPARC_HM10: | |
2125 | case R_SPARC_LM22: | |
2126 | case R_SPARC_7: | |
2127 | case R_SPARC_5: | |
2128 | case R_SPARC_6: | |
2129 | case R_SPARC_HIX22: | |
2130 | case R_SPARC_LOX10: | |
2131 | case R_SPARC_H44: | |
2132 | case R_SPARC_M44: | |
2133 | case R_SPARC_L44: | |
2134 | case R_SPARC_UA64: | |
2135 | case R_SPARC_UA16: | |
2136 | { | |
2137 | Elf_Internal_Rela outrel; | |
2138 | boolean skip; | |
2139 | ||
2140 | if (sreloc == NULL) | |
2141 | { | |
2142 | const char *name = | |
2143 | (bfd_elf_string_from_elf_section | |
2144 | (input_bfd, | |
2145 | elf_elfheader (input_bfd)->e_shstrndx, | |
2146 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
2147 | ||
2148 | if (name == NULL) | |
2149 | return false; | |
2150 | ||
2151 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
2152 | && strcmp (bfd_get_section_name(input_bfd, | |
2153 | input_section), | |
2154 | name + 5) == 0); | |
2155 | ||
2156 | sreloc = bfd_get_section_by_name (dynobj, name); | |
2157 | BFD_ASSERT (sreloc != NULL); | |
2158 | } | |
2159 | ||
2160 | skip = false; | |
2161 | ||
2162 | if (elf_section_data (input_section)->stab_info == NULL) | |
2163 | outrel.r_offset = rel->r_offset; | |
2164 | else | |
2165 | { | |
2166 | bfd_vma off; | |
2167 | ||
2168 | off = (_bfd_stab_section_offset | |
2169 | (output_bfd, &elf_hash_table (info)->stab_info, | |
2170 | input_section, | |
2171 | &elf_section_data (input_section)->stab_info, | |
2172 | rel->r_offset)); | |
2173 | if (off == MINUS_ONE) | |
2174 | skip = true; | |
2175 | outrel.r_offset = off; | |
2176 | } | |
2177 | ||
2178 | outrel.r_offset += (input_section->output_section->vma | |
2179 | + input_section->output_offset); | |
2180 | ||
2181 | /* Optimize unaligned reloc usage now that we know where | |
2182 | it finally resides. */ | |
2183 | switch (r_type) | |
2184 | { | |
2185 | case R_SPARC_16: | |
2186 | if (outrel.r_offset & 1) r_type = R_SPARC_UA16; | |
2187 | break; | |
2188 | case R_SPARC_UA16: | |
2189 | if (!(outrel.r_offset & 1)) r_type = R_SPARC_16; | |
2190 | break; | |
2191 | case R_SPARC_32: | |
2192 | if (outrel.r_offset & 3) r_type = R_SPARC_UA32; | |
2193 | break; | |
2194 | case R_SPARC_UA32: | |
2195 | if (!(outrel.r_offset & 3)) r_type = R_SPARC_32; | |
2196 | break; | |
2197 | case R_SPARC_64: | |
2198 | if (outrel.r_offset & 7) r_type = R_SPARC_UA64; | |
2199 | break; | |
2200 | case R_SPARC_UA64: | |
2201 | if (!(outrel.r_offset & 7)) r_type = R_SPARC_64; | |
2202 | break; | |
2203 | } | |
2204 | ||
2205 | if (skip) | |
2206 | memset (&outrel, 0, sizeof outrel); | |
2207 | /* h->dynindx may be -1 if the symbol was marked to | |
2208 | become local. */ | |
2209 | else if (h != NULL | |
2210 | && ((! info->symbolic && h->dynindx != -1) | |
2211 | || (h->elf_link_hash_flags | |
2212 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
2213 | { | |
2214 | BFD_ASSERT (h->dynindx != -1); | |
f65054f7 RH |
2215 | outrel.r_info |
2216 | = ELF64_R_INFO (h->dynindx, | |
2217 | ELF64_R_TYPE_INFO ( | |
2218 | ELF64_R_TYPE_DATA (rel->r_info), | |
2219 | r_type)); | |
252b5132 RH |
2220 | outrel.r_addend = rel->r_addend; |
2221 | } | |
2222 | else | |
2223 | { | |
2224 | if (r_type == R_SPARC_64) | |
2225 | { | |
2226 | outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); | |
2227 | outrel.r_addend = relocation + rel->r_addend; | |
2228 | } | |
2229 | else | |
2230 | { | |
2231 | long indx; | |
2232 | ||
2233 | if (h == NULL) | |
2234 | sec = local_sections[r_symndx]; | |
2235 | else | |
2236 | { | |
2237 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
2238 | || (h->root.type | |
2239 | == bfd_link_hash_defweak)); | |
2240 | sec = h->root.u.def.section; | |
2241 | } | |
2242 | if (sec != NULL && bfd_is_abs_section (sec)) | |
2243 | indx = 0; | |
2244 | else if (sec == NULL || sec->owner == NULL) | |
2245 | { | |
2246 | bfd_set_error (bfd_error_bad_value); | |
2247 | return false; | |
2248 | } | |
2249 | else | |
2250 | { | |
2251 | asection *osec; | |
2252 | ||
2253 | osec = sec->output_section; | |
2254 | indx = elf_section_data (osec)->dynindx; | |
2255 | ||
2256 | /* FIXME: we really should be able to link non-pic | |
2257 | shared libraries. */ | |
2258 | if (indx == 0) | |
2259 | { | |
2260 | BFD_FAIL (); | |
2261 | (*_bfd_error_handler) | |
2262 | (_("%s: probably compiled without -fPIC?"), | |
2263 | bfd_get_filename (input_bfd)); | |
2264 | bfd_set_error (bfd_error_bad_value); | |
2265 | return false; | |
2266 | } | |
2267 | } | |
2268 | ||
f65054f7 RH |
2269 | outrel.r_info |
2270 | = ELF64_R_INFO (indx, | |
2271 | ELF64_R_TYPE_INFO ( | |
2272 | ELF64_R_TYPE_DATA (rel->r_info), | |
2273 | r_type)); | |
840a9995 | 2274 | outrel.r_addend = relocation + rel->r_addend; |
252b5132 RH |
2275 | } |
2276 | } | |
2277 | ||
2278 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
2279 | (((Elf64_External_Rela *) | |
2280 | sreloc->contents) | |
2281 | + sreloc->reloc_count)); | |
2282 | ++sreloc->reloc_count; | |
2283 | ||
2284 | /* This reloc will be computed at runtime, so there's no | |
2285 | need to do anything now, unless this is a RELATIVE | |
2286 | reloc in an unallocated section. */ | |
2287 | if (skip | |
2288 | || (input_section->flags & SEC_ALLOC) != 0 | |
f65054f7 | 2289 | || ELF64_R_TYPE_ID (outrel.r_info) != R_SPARC_RELATIVE) |
252b5132 RH |
2290 | continue; |
2291 | } | |
2292 | break; | |
2293 | } | |
2294 | } | |
2295 | ||
2296 | switch (r_type) | |
2297 | { | |
2298 | case R_SPARC_GOT10: | |
2299 | case R_SPARC_GOT13: | |
2300 | case R_SPARC_GOT22: | |
2301 | /* Relocation is to the entry for this symbol in the global | |
2302 | offset table. */ | |
2303 | if (sgot == NULL) | |
2304 | { | |
2305 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2306 | BFD_ASSERT (sgot != NULL); | |
2307 | } | |
2308 | ||
2309 | if (h != NULL) | |
2310 | { | |
2311 | bfd_vma off = h->got.offset; | |
2312 | BFD_ASSERT (off != (bfd_vma) -1); | |
2313 | ||
2314 | if (! elf_hash_table (info)->dynamic_sections_created | |
2315 | || (info->shared | |
2316 | && (info->symbolic || h->dynindx == -1) | |
2317 | && (h->elf_link_hash_flags | |
2318 | & ELF_LINK_HASH_DEF_REGULAR))) | |
2319 | { | |
2320 | /* This is actually a static link, or it is a -Bsymbolic | |
2321 | link and the symbol is defined locally, or the symbol | |
2322 | was forced to be local because of a version file. We | |
2323 | must initialize this entry in the global offset table. | |
2324 | Since the offset must always be a multiple of 8, we | |
2325 | use the least significant bit to record whether we | |
2326 | have initialized it already. | |
2327 | ||
2328 | When doing a dynamic link, we create a .rela.got | |
2329 | relocation entry to initialize the value. This is | |
2330 | done in the finish_dynamic_symbol routine. */ | |
2331 | ||
2332 | if ((off & 1) != 0) | |
2333 | off &= ~1; | |
2334 | else | |
2335 | { | |
2336 | bfd_put_64 (output_bfd, relocation, | |
2337 | sgot->contents + off); | |
2338 | h->got.offset |= 1; | |
2339 | } | |
2340 | } | |
2341 | relocation = sgot->output_offset + off - got_base; | |
2342 | } | |
2343 | else | |
2344 | { | |
2345 | bfd_vma off; | |
2346 | ||
2347 | BFD_ASSERT (local_got_offsets != NULL); | |
2348 | off = local_got_offsets[r_symndx]; | |
2349 | BFD_ASSERT (off != (bfd_vma) -1); | |
2350 | ||
2351 | /* The offset must always be a multiple of 8. We use | |
2352 | the least significant bit to record whether we have | |
2353 | already processed this entry. */ | |
2354 | if ((off & 1) != 0) | |
2355 | off &= ~1; | |
2356 | else | |
2357 | { | |
2358 | bfd_put_64 (output_bfd, relocation, sgot->contents + off); | |
2359 | local_got_offsets[r_symndx] |= 1; | |
2360 | ||
2361 | if (info->shared) | |
2362 | { | |
2363 | asection *srelgot; | |
2364 | Elf_Internal_Rela outrel; | |
2365 | ||
2366 | /* We need to generate a R_SPARC_RELATIVE reloc | |
2367 | for the dynamic linker. */ | |
2368 | srelgot = bfd_get_section_by_name(dynobj, ".rela.got"); | |
2369 | BFD_ASSERT (srelgot != NULL); | |
2370 | ||
2371 | outrel.r_offset = (sgot->output_section->vma | |
2372 | + sgot->output_offset | |
2373 | + off); | |
2374 | outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); | |
2375 | outrel.r_addend = relocation; | |
2376 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
2377 | (((Elf64_External_Rela *) | |
2378 | srelgot->contents) | |
2379 | + srelgot->reloc_count)); | |
2380 | ++srelgot->reloc_count; | |
2381 | } | |
2382 | } | |
2383 | relocation = sgot->output_offset + off - got_base; | |
2384 | } | |
2385 | goto do_default; | |
2386 | ||
2387 | case R_SPARC_WPLT30: | |
2388 | case R_SPARC_PLT32: | |
2389 | case R_SPARC_HIPLT22: | |
2390 | case R_SPARC_LOPLT10: | |
2391 | case R_SPARC_PCPLT32: | |
2392 | case R_SPARC_PCPLT22: | |
2393 | case R_SPARC_PCPLT10: | |
2394 | case R_SPARC_PLT64: | |
2395 | /* Relocation is to the entry for this symbol in the | |
2396 | procedure linkage table. */ | |
2397 | BFD_ASSERT (h != NULL); | |
2398 | ||
2399 | if (h->plt.offset == (bfd_vma) -1) | |
2400 | { | |
2401 | /* We didn't make a PLT entry for this symbol. This | |
2402 | happens when statically linking PIC code, or when | |
2403 | using -Bsymbolic. */ | |
2404 | goto do_default; | |
2405 | } | |
2406 | ||
2407 | if (splt == NULL) | |
2408 | { | |
2409 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2410 | BFD_ASSERT (splt != NULL); | |
2411 | } | |
2412 | ||
2413 | relocation = (splt->output_section->vma | |
2414 | + splt->output_offset | |
2415 | + sparc64_elf_plt_entry_offset (h->plt.offset)); | |
f7775d95 JJ |
2416 | if (r_type == R_SPARC_WPLT30) |
2417 | goto do_wplt30; | |
252b5132 RH |
2418 | goto do_default; |
2419 | ||
2420 | case R_SPARC_OLO10: | |
2421 | { | |
2422 | bfd_vma x; | |
2423 | ||
2424 | relocation += rel->r_addend; | |
2425 | relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); | |
2426 | ||
2427 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2428 | x = (x & ~0x1fff) | (relocation & 0x1fff); | |
2429 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2430 | ||
2431 | r = bfd_check_overflow (howto->complain_on_overflow, | |
2432 | howto->bitsize, howto->rightshift, | |
2433 | bfd_arch_bits_per_address (input_bfd), | |
2434 | relocation); | |
2435 | } | |
2436 | break; | |
2437 | ||
2438 | case R_SPARC_WDISP16: | |
2439 | { | |
2440 | bfd_vma x; | |
2441 | ||
2442 | relocation += rel->r_addend; | |
2443 | /* Adjust for pc-relative-ness. */ | |
2444 | relocation -= (input_section->output_section->vma | |
2445 | + input_section->output_offset); | |
2446 | relocation -= rel->r_offset; | |
2447 | ||
2448 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2449 | x = (x & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) | |
2450 | | ((relocation >> 2) & 0x3fff)); | |
2451 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2452 | ||
2453 | r = bfd_check_overflow (howto->complain_on_overflow, | |
2454 | howto->bitsize, howto->rightshift, | |
2455 | bfd_arch_bits_per_address (input_bfd), | |
2456 | relocation); | |
2457 | } | |
2458 | break; | |
2459 | ||
2460 | case R_SPARC_HIX22: | |
2461 | { | |
2462 | bfd_vma x; | |
2463 | ||
2464 | relocation += rel->r_addend; | |
2465 | relocation = relocation ^ MINUS_ONE; | |
2466 | ||
2467 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2468 | x = (x & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); | |
2469 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2470 | ||
2471 | r = bfd_check_overflow (howto->complain_on_overflow, | |
2472 | howto->bitsize, howto->rightshift, | |
2473 | bfd_arch_bits_per_address (input_bfd), | |
2474 | relocation); | |
2475 | } | |
2476 | break; | |
2477 | ||
2478 | case R_SPARC_LOX10: | |
2479 | { | |
2480 | bfd_vma x; | |
2481 | ||
2482 | relocation += rel->r_addend; | |
2483 | relocation = (relocation & 0x3ff) | 0x1c00; | |
2484 | ||
2485 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2486 | x = (x & ~0x1fff) | relocation; | |
2487 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2488 | ||
2489 | r = bfd_reloc_ok; | |
2490 | } | |
2491 | break; | |
2492 | ||
f7775d95 JJ |
2493 | case R_SPARC_WDISP30: |
2494 | do_wplt30: | |
2495 | if (SEC_DO_RELAX (input_section) | |
2496 | && rel->r_offset + 4 < input_section->_raw_size) | |
2497 | { | |
2498 | #define G0 0 | |
2499 | #define O7 15 | |
2500 | #define XCC (2 << 20) | |
2501 | #define COND(x) (((x)&0xf)<<25) | |
2502 | #define CONDA COND(0x8) | |
2503 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) | |
2504 | #define INSN_BA (F2(0,2) | CONDA) | |
2505 | #define INSN_OR F3(2, 0x2, 0) | |
2506 | #define INSN_NOP F2(0,4) | |
2507 | ||
2508 | bfd_vma x, y; | |
2509 | ||
2510 | /* If the instruction is a call with either: | |
2511 | restore | |
2512 | arithmetic instruction with rd == %o7 | |
2513 | where rs1 != %o7 and rs2 if it is register != %o7 | |
2514 | then we can optimize if the call destination is near | |
2515 | by changing the call into a branch always. */ | |
2516 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2517 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
2518 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) | |
2519 | { | |
2520 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ | |
2521 | || ((y & OP3(0x28)) == 0 /* arithmetic */ | |
2522 | && (y & RD(~0)) == RD(O7))) | |
2523 | && (y & RS1(~0)) != RS1(O7) | |
2524 | && ((y & F3I(~0)) | |
2525 | || (y & RS2(~0)) != RS2(O7))) | |
2526 | { | |
2527 | bfd_vma reloc; | |
2528 | ||
2529 | reloc = relocation + rel->r_addend - rel->r_offset; | |
2530 | reloc -= (input_section->output_section->vma | |
2531 | + input_section->output_offset); | |
2532 | if (reloc & 3) | |
2533 | goto do_default; | |
2534 | ||
2535 | /* Ensure the branch fits into simm22. */ | |
2536 | if ((reloc & ~(bfd_vma)0x7fffff) | |
2537 | && ((reloc | 0x7fffff) != MINUS_ONE)) | |
2538 | goto do_default; | |
2539 | reloc >>= 2; | |
2540 | ||
2541 | /* Check whether it fits into simm19. */ | |
2542 | if ((reloc & 0x3c0000) == 0 | |
2543 | || (reloc & 0x3c0000) == 0x3c0000) | |
2544 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ | |
2545 | else | |
2546 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ | |
2547 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2548 | r = bfd_reloc_ok; | |
2549 | if (rel->r_offset >= 4 | |
2550 | && (y & (0xffffffff ^ RS1(~0))) | |
2551 | == (INSN_OR | RD(O7) | RS2(G0))) | |
2552 | { | |
2553 | bfd_vma z; | |
2554 | unsigned int reg; | |
2555 | ||
2556 | z = bfd_get_32 (input_bfd, | |
2557 | contents + rel->r_offset - 4); | |
2558 | if ((z & (0xffffffff ^ RD(~0))) | |
2559 | != (INSN_OR | RS1(O7) | RS2(G0))) | |
2560 | break; | |
2561 | ||
2562 | /* The sequence was | |
2563 | or %o7, %g0, %rN | |
2564 | call foo | |
2565 | or %rN, %g0, %o7 | |
2566 | ||
2567 | If call foo was replaced with ba, replace | |
2568 | or %rN, %g0, %o7 with nop. */ | |
2569 | ||
2570 | reg = (y & RS1(~0)) >> 14; | |
2571 | if (reg != ((z & RD(~0)) >> 25) | |
2572 | || reg == G0 || reg == O7) | |
2573 | break; | |
2574 | ||
2575 | bfd_put_32 (input_bfd, INSN_NOP, | |
2576 | contents + rel->r_offset + 4); | |
2577 | } | |
2578 | break; | |
2579 | } | |
2580 | } | |
2581 | } | |
2582 | /* FALLTHROUGH */ | |
2583 | ||
252b5132 RH |
2584 | default: |
2585 | do_default: | |
2586 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2587 | contents, rel->r_offset, | |
2588 | relocation, rel->r_addend); | |
2589 | break; | |
2590 | } | |
2591 | ||
2592 | switch (r) | |
2593 | { | |
2594 | case bfd_reloc_ok: | |
2595 | break; | |
2596 | ||
2597 | default: | |
2598 | case bfd_reloc_outofrange: | |
2599 | abort (); | |
2600 | ||
2601 | case bfd_reloc_overflow: | |
2602 | { | |
2603 | const char *name; | |
2604 | ||
2605 | if (h != NULL) | |
2606 | { | |
2607 | if (h->root.type == bfd_link_hash_undefweak | |
2608 | && howto->pc_relative) | |
2609 | { | |
2610 | /* Assume this is a call protected by other code that | |
2611 | detect the symbol is undefined. If this is the case, | |
2612 | we can safely ignore the overflow. If not, the | |
2613 | program is hosed anyway, and a little warning isn't | |
2614 | going to help. */ | |
2615 | break; | |
2616 | } | |
2617 | ||
2618 | name = h->root.root.string; | |
2619 | } | |
2620 | else | |
2621 | { | |
2622 | name = (bfd_elf_string_from_elf_section | |
2623 | (input_bfd, | |
2624 | symtab_hdr->sh_link, | |
2625 | sym->st_name)); | |
2626 | if (name == NULL) | |
2627 | return false; | |
2628 | if (*name == '\0') | |
2629 | name = bfd_section_name (input_bfd, sec); | |
2630 | } | |
2631 | if (! ((*info->callbacks->reloc_overflow) | |
2632 | (info, name, howto->name, (bfd_vma) 0, | |
2633 | input_bfd, input_section, rel->r_offset))) | |
2634 | return false; | |
2635 | } | |
2636 | break; | |
2637 | } | |
2638 | } | |
2639 | ||
2640 | return true; | |
2641 | } | |
2642 | ||
2643 | /* Finish up dynamic symbol handling. We set the contents of various | |
2644 | dynamic sections here. */ | |
2645 | ||
2646 | static boolean | |
2647 | sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
2648 | bfd *output_bfd; | |
2649 | struct bfd_link_info *info; | |
2650 | struct elf_link_hash_entry *h; | |
2651 | Elf_Internal_Sym *sym; | |
2652 | { | |
2653 | bfd *dynobj; | |
2654 | ||
2655 | dynobj = elf_hash_table (info)->dynobj; | |
2656 | ||
2657 | if (h->plt.offset != (bfd_vma) -1) | |
2658 | { | |
2659 | asection *splt; | |
2660 | asection *srela; | |
2661 | Elf_Internal_Rela rela; | |
2662 | ||
2663 | /* This symbol has an entry in the PLT. Set it up. */ | |
2664 | ||
2665 | BFD_ASSERT (h->dynindx != -1); | |
2666 | ||
2667 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2668 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2669 | BFD_ASSERT (splt != NULL && srela != NULL); | |
2670 | ||
2671 | /* Fill in the entry in the .rela.plt section. */ | |
2672 | ||
2673 | if (h->plt.offset < LARGE_PLT_THRESHOLD) | |
2674 | { | |
2675 | rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset); | |
2676 | rela.r_addend = 0; | |
2677 | } | |
2678 | else | |
2679 | { | |
2680 | int max = splt->_raw_size / PLT_ENTRY_SIZE; | |
2681 | rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max); | |
a11c78e7 RH |
2682 | rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4) |
2683 | -(splt->output_section->vma + splt->output_offset); | |
252b5132 RH |
2684 | } |
2685 | rela.r_offset += (splt->output_section->vma + splt->output_offset); | |
2686 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); | |
2687 | ||
2688 | bfd_elf64_swap_reloca_out (output_bfd, &rela, | |
2689 | ((Elf64_External_Rela *) srela->contents | |
2690 | + h->plt.offset)); | |
2691 | ||
2692 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2693 | { | |
2694 | /* Mark the symbol as undefined, rather than as defined in | |
2695 | the .plt section. Leave the value alone. */ | |
2696 | sym->st_shndx = SHN_UNDEF; | |
2697 | } | |
2698 | } | |
2699 | ||
2700 | if (h->got.offset != (bfd_vma) -1) | |
2701 | { | |
2702 | asection *sgot; | |
2703 | asection *srela; | |
2704 | Elf_Internal_Rela rela; | |
2705 | ||
2706 | /* This symbol has an entry in the GOT. Set it up. */ | |
2707 | ||
2708 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2709 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2710 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2711 | ||
2712 | rela.r_offset = (sgot->output_section->vma | |
2713 | + sgot->output_offset | |
2714 | + (h->got.offset &~ 1)); | |
2715 | ||
2716 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2717 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
2718 | the symbol was forced to be local because of a version file. | |
2719 | The entry in the global offset table will already have been | |
2720 | initialized in the relocate_section function. */ | |
2721 | if (info->shared | |
2722 | && (info->symbolic || h->dynindx == -1) | |
2723 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
2724 | { | |
2725 | asection *sec = h->root.u.def.section; | |
2726 | rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); | |
2727 | rela.r_addend = (h->root.u.def.value | |
2728 | + sec->output_section->vma | |
2729 | + sec->output_offset); | |
2730 | } | |
2731 | else | |
2732 | { | |
2733 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
2734 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); | |
2735 | rela.r_addend = 0; | |
2736 | } | |
2737 | ||
2738 | bfd_elf64_swap_reloca_out (output_bfd, &rela, | |
2739 | ((Elf64_External_Rela *) srela->contents | |
2740 | + srela->reloc_count)); | |
2741 | ++srela->reloc_count; | |
2742 | } | |
2743 | ||
2744 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
2745 | { | |
2746 | asection *s; | |
2747 | Elf_Internal_Rela rela; | |
2748 | ||
2749 | /* This symbols needs a copy reloc. Set it up. */ | |
2750 | ||
2751 | BFD_ASSERT (h->dynindx != -1); | |
2752 | ||
2753 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2754 | ".rela.bss"); | |
2755 | BFD_ASSERT (s != NULL); | |
2756 | ||
2757 | rela.r_offset = (h->root.u.def.value | |
2758 | + h->root.u.def.section->output_section->vma | |
2759 | + h->root.u.def.section->output_offset); | |
2760 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY); | |
2761 | rela.r_addend = 0; | |
2762 | bfd_elf64_swap_reloca_out (output_bfd, &rela, | |
2763 | ((Elf64_External_Rela *) s->contents | |
2764 | + s->reloc_count)); | |
2765 | ++s->reloc_count; | |
2766 | } | |
2767 | ||
2768 | /* Mark some specially defined symbols as absolute. */ | |
2769 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2770 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
2771 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
2772 | sym->st_shndx = SHN_ABS; | |
2773 | ||
2774 | return true; | |
2775 | } | |
2776 | ||
2777 | /* Finish up the dynamic sections. */ | |
2778 | ||
2779 | static boolean | |
2780 | sparc64_elf_finish_dynamic_sections (output_bfd, info) | |
2781 | bfd *output_bfd; | |
2782 | struct bfd_link_info *info; | |
2783 | { | |
2784 | bfd *dynobj; | |
587ff49e | 2785 | int stt_regidx = -1; |
252b5132 RH |
2786 | asection *sdyn; |
2787 | asection *sgot; | |
2788 | ||
2789 | dynobj = elf_hash_table (info)->dynobj; | |
2790 | ||
2791 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2792 | ||
2793 | if (elf_hash_table (info)->dynamic_sections_created) | |
2794 | { | |
2795 | asection *splt; | |
2796 | Elf64_External_Dyn *dyncon, *dynconend; | |
2797 | ||
2798 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2799 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2800 | ||
2801 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
2802 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2803 | for (; dyncon < dynconend; dyncon++) | |
2804 | { | |
2805 | Elf_Internal_Dyn dyn; | |
2806 | const char *name; | |
2807 | boolean size; | |
2808 | ||
2809 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2810 | ||
2811 | switch (dyn.d_tag) | |
2812 | { | |
2813 | case DT_PLTGOT: name = ".plt"; size = false; break; | |
2814 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
2815 | case DT_JMPREL: name = ".rela.plt"; size = false; break; | |
587ff49e RH |
2816 | case DT_SPARC_REGISTER: |
2817 | if (stt_regidx == -1) | |
2818 | { | |
2819 | stt_regidx = | |
2820 | _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); | |
2821 | if (stt_regidx == -1) | |
2822 | return false; | |
2823 | } | |
2824 | dyn.d_un.d_val = stt_regidx++; | |
2825 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2826 | /* fallthrough */ | |
252b5132 RH |
2827 | default: name = NULL; size = false; break; |
2828 | } | |
2829 | ||
2830 | if (name != NULL) | |
2831 | { | |
2832 | asection *s; | |
2833 | ||
2834 | s = bfd_get_section_by_name (output_bfd, name); | |
2835 | if (s == NULL) | |
2836 | dyn.d_un.d_val = 0; | |
2837 | else | |
2838 | { | |
2839 | if (! size) | |
2840 | dyn.d_un.d_ptr = s->vma; | |
2841 | else | |
2842 | { | |
2843 | if (s->_cooked_size != 0) | |
2844 | dyn.d_un.d_val = s->_cooked_size; | |
2845 | else | |
2846 | dyn.d_un.d_val = s->_raw_size; | |
2847 | } | |
2848 | } | |
2849 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2850 | } | |
2851 | } | |
2852 | ||
2853 | /* Initialize the contents of the .plt section. */ | |
2854 | if (splt->_raw_size > 0) | |
2855 | { | |
2856 | sparc64_elf_build_plt(output_bfd, splt->contents, | |
2857 | splt->_raw_size / PLT_ENTRY_SIZE); | |
2858 | } | |
2859 | ||
2860 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
2861 | PLT_ENTRY_SIZE; | |
2862 | } | |
2863 | ||
2864 | /* Set the first entry in the global offset table to the address of | |
2865 | the dynamic section. */ | |
2866 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2867 | BFD_ASSERT (sgot != NULL); | |
2868 | if (sgot->_raw_size > 0) | |
2869 | { | |
2870 | if (sdyn == NULL) | |
2871 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2872 | else | |
2873 | bfd_put_64 (output_bfd, | |
2874 | sdyn->output_section->vma + sdyn->output_offset, | |
2875 | sgot->contents); | |
2876 | } | |
2877 | ||
2878 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; | |
2879 | ||
252b5132 RH |
2880 | return true; |
2881 | } | |
2882 | \f | |
2883 | /* Functions for dealing with the e_flags field. */ | |
2884 | ||
2885 | /* Merge backend specific data from an object file to the output | |
2886 | object file when linking. */ | |
2887 | ||
2888 | static boolean | |
2889 | sparc64_elf_merge_private_bfd_data (ibfd, obfd) | |
2890 | bfd *ibfd; | |
2891 | bfd *obfd; | |
2892 | { | |
2893 | boolean error; | |
2894 | flagword new_flags, old_flags; | |
2895 | int new_mm, old_mm; | |
2896 | ||
2897 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2898 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2899 | return true; | |
2900 | ||
2901 | new_flags = elf_elfheader (ibfd)->e_flags; | |
2902 | old_flags = elf_elfheader (obfd)->e_flags; | |
2903 | ||
2904 | if (!elf_flags_init (obfd)) /* First call, no flags set */ | |
2905 | { | |
2906 | elf_flags_init (obfd) = true; | |
2907 | elf_elfheader (obfd)->e_flags = new_flags; | |
2908 | } | |
2909 | ||
2910 | else if (new_flags == old_flags) /* Compatible flags are ok */ | |
2911 | ; | |
2912 | ||
2913 | else /* Incompatible flags */ | |
2914 | { | |
2915 | error = false; | |
2916 | ||
37fb6db1 ILT |
2917 | if ((ibfd->flags & DYNAMIC) != 0) |
2918 | { | |
2919 | /* We don't want dynamic objects memory ordering and | |
2920 | architecture to have any role. That's what dynamic linker | |
2921 | should do. */ | |
6c08d697 JJ |
2922 | new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_SUN_US1 | EF_SPARC_HAL_R1); |
2923 | new_flags |= (old_flags | |
37fb6db1 ILT |
2924 | & (EF_SPARCV9_MM |
2925 | | EF_SPARC_SUN_US1 | |
2926 | | EF_SPARC_HAL_R1)); | |
2927 | } | |
2928 | else | |
2929 | { | |
2930 | /* Choose the highest architecture requirements. */ | |
2931 | old_flags |= (new_flags & (EF_SPARC_SUN_US1 | EF_SPARC_HAL_R1)); | |
2932 | new_flags |= (old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_HAL_R1)); | |
2933 | if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_HAL_R1)) | |
2934 | == (EF_SPARC_SUN_US1 | EF_SPARC_HAL_R1)) | |
2935 | { | |
2936 | error = true; | |
2937 | (*_bfd_error_handler) | |
2938 | (_("%s: linking UltraSPARC specific with HAL specific code"), | |
2939 | bfd_get_filename (ibfd)); | |
2940 | } | |
2941 | /* Choose the most restrictive memory ordering. */ | |
2942 | old_mm = (old_flags & EF_SPARCV9_MM); | |
2943 | new_mm = (new_flags & EF_SPARCV9_MM); | |
2944 | old_flags &= ~EF_SPARCV9_MM; | |
2945 | new_flags &= ~EF_SPARCV9_MM; | |
2946 | if (new_mm < old_mm) | |
2947 | old_mm = new_mm; | |
2948 | old_flags |= old_mm; | |
2949 | new_flags |= old_mm; | |
2950 | } | |
252b5132 RH |
2951 | |
2952 | /* Warn about any other mismatches */ | |
2953 | if (new_flags != old_flags) | |
2954 | { | |
2955 | error = true; | |
2956 | (*_bfd_error_handler) | |
2957 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
2958 | bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); | |
2959 | } | |
2960 | ||
2961 | elf_elfheader (obfd)->e_flags = old_flags; | |
2962 | ||
2963 | if (error) | |
2964 | { | |
2965 | bfd_set_error (bfd_error_bad_value); | |
2966 | return false; | |
2967 | } | |
2968 | } | |
2969 | return true; | |
2970 | } | |
587ff49e RH |
2971 | \f |
2972 | /* Print a STT_REGISTER symbol to file FILE. */ | |
252b5132 | 2973 | |
587ff49e RH |
2974 | static const char * |
2975 | sparc64_elf_print_symbol_all (abfd, filep, symbol) | |
6c08d697 | 2976 | bfd *abfd ATTRIBUTE_UNUSED; |
587ff49e RH |
2977 | PTR filep; |
2978 | asymbol *symbol; | |
2979 | { | |
2980 | FILE *file = (FILE *) filep; | |
2981 | int reg, type; | |
2982 | ||
2983 | if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info) | |
2984 | != STT_REGISTER) | |
2985 | return NULL; | |
2986 | ||
2987 | reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
2988 | type = symbol->flags; | |
2989 | fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "", | |
2990 | ((type & BSF_LOCAL) | |
2991 | ? (type & BSF_GLOBAL) ? '!' : 'l' | |
2992 | : (type & BSF_GLOBAL) ? 'g' : ' '), | |
2993 | (type & BSF_WEAK) ? 'w' : ' '); | |
2994 | if (symbol->name == NULL || symbol->name [0] == '\0') | |
2995 | return "#scratch"; | |
2996 | else | |
2997 | return symbol->name; | |
2998 | } | |
252b5132 RH |
2999 | \f |
3000 | /* Set the right machine number for a SPARC64 ELF file. */ | |
3001 | ||
3002 | static boolean | |
3003 | sparc64_elf_object_p (abfd) | |
3004 | bfd *abfd; | |
3005 | { | |
3006 | unsigned long mach = bfd_mach_sparc_v9; | |
3007 | ||
3008 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
3009 | mach = bfd_mach_sparc_v9a; | |
3010 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); | |
3011 | } | |
3012 | ||
f65054f7 RH |
3013 | /* Relocations in the 64 bit SPARC ELF ABI are more complex than in |
3014 | standard ELF, because R_SPARC_OLO10 has secondary addend in | |
3015 | ELF64_R_TYPE_DATA field. This structure is used to redirect the | |
3016 | relocation handling routines. */ | |
3017 | ||
3018 | const struct elf_size_info sparc64_elf_size_info = | |
3019 | { | |
3020 | sizeof (Elf64_External_Ehdr), | |
3021 | sizeof (Elf64_External_Phdr), | |
3022 | sizeof (Elf64_External_Shdr), | |
3023 | sizeof (Elf64_External_Rel), | |
3024 | sizeof (Elf64_External_Rela), | |
3025 | sizeof (Elf64_External_Sym), | |
3026 | sizeof (Elf64_External_Dyn), | |
3027 | sizeof (Elf_External_Note), | |
a11c78e7 | 3028 | 4, /* hash-table entry size */ |
f65054f7 RH |
3029 | /* internal relocations per external relocations. |
3030 | For link purposes we use just 1 internal per | |
3031 | 1 external, for assembly and slurp symbol table | |
3032 | we use 2. */ | |
3033 | 1, | |
3034 | 64, /* arch_size */ | |
3035 | 8, /* file_align */ | |
3036 | ELFCLASS64, | |
3037 | EV_CURRENT, | |
3038 | bfd_elf64_write_out_phdrs, | |
3039 | bfd_elf64_write_shdrs_and_ehdr, | |
3040 | sparc64_elf_write_relocs, | |
3041 | bfd_elf64_swap_symbol_out, | |
3042 | sparc64_elf_slurp_reloc_table, | |
3043 | bfd_elf64_slurp_symbol_table, | |
3044 | bfd_elf64_swap_dyn_in, | |
3045 | bfd_elf64_swap_dyn_out, | |
3046 | NULL, | |
3047 | NULL, | |
3048 | NULL, | |
3049 | NULL | |
3050 | }; | |
3051 | ||
252b5132 RH |
3052 | #define TARGET_BIG_SYM bfd_elf64_sparc_vec |
3053 | #define TARGET_BIG_NAME "elf64-sparc" | |
3054 | #define ELF_ARCH bfd_arch_sparc | |
3055 | #define ELF_MAXPAGESIZE 0x100000 | |
3056 | ||
3057 | /* This is the official ABI value. */ | |
3058 | #define ELF_MACHINE_CODE EM_SPARCV9 | |
3059 | ||
3060 | /* This is the value that we used before the ABI was released. */ | |
3061 | #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9 | |
3062 | ||
587ff49e RH |
3063 | #define bfd_elf64_bfd_link_hash_table_create \ |
3064 | sparc64_elf_bfd_link_hash_table_create | |
3065 | ||
252b5132 RH |
3066 | #define elf_info_to_howto \ |
3067 | sparc64_elf_info_to_howto | |
f65054f7 RH |
3068 | #define bfd_elf64_get_reloc_upper_bound \ |
3069 | sparc64_elf_get_reloc_upper_bound | |
3070 | #define bfd_elf64_get_dynamic_reloc_upper_bound \ | |
3071 | sparc64_elf_get_dynamic_reloc_upper_bound | |
3072 | #define bfd_elf64_canonicalize_dynamic_reloc \ | |
3073 | sparc64_elf_canonicalize_dynamic_reloc | |
252b5132 RH |
3074 | #define bfd_elf64_bfd_reloc_type_lookup \ |
3075 | sparc64_elf_reloc_type_lookup | |
f7775d95 JJ |
3076 | #define bfd_elf64_bfd_relax_section \ |
3077 | sparc64_elf_relax_section | |
252b5132 RH |
3078 | |
3079 | #define elf_backend_create_dynamic_sections \ | |
3080 | _bfd_elf_create_dynamic_sections | |
587ff49e RH |
3081 | #define elf_backend_add_symbol_hook \ |
3082 | sparc64_elf_add_symbol_hook | |
3083 | #define elf_backend_get_symbol_type \ | |
3084 | sparc64_elf_get_symbol_type | |
3085 | #define elf_backend_symbol_processing \ | |
3086 | sparc64_elf_symbol_processing | |
252b5132 RH |
3087 | #define elf_backend_check_relocs \ |
3088 | sparc64_elf_check_relocs | |
3089 | #define elf_backend_adjust_dynamic_symbol \ | |
3090 | sparc64_elf_adjust_dynamic_symbol | |
3091 | #define elf_backend_size_dynamic_sections \ | |
3092 | sparc64_elf_size_dynamic_sections | |
3093 | #define elf_backend_relocate_section \ | |
3094 | sparc64_elf_relocate_section | |
3095 | #define elf_backend_finish_dynamic_symbol \ | |
3096 | sparc64_elf_finish_dynamic_symbol | |
3097 | #define elf_backend_finish_dynamic_sections \ | |
3098 | sparc64_elf_finish_dynamic_sections | |
587ff49e RH |
3099 | #define elf_backend_print_symbol_all \ |
3100 | sparc64_elf_print_symbol_all | |
3101 | #define elf_backend_output_arch_syms \ | |
3102 | sparc64_elf_output_arch_syms | |
252b5132 RH |
3103 | |
3104 | #define bfd_elf64_bfd_merge_private_bfd_data \ | |
3105 | sparc64_elf_merge_private_bfd_data | |
3106 | ||
f65054f7 RH |
3107 | #define elf_backend_size_info \ |
3108 | sparc64_elf_size_info | |
252b5132 RH |
3109 | #define elf_backend_object_p \ |
3110 | sparc64_elf_object_p | |
3111 | ||
3112 | #define elf_backend_want_got_plt 0 | |
3113 | #define elf_backend_plt_readonly 0 | |
3114 | #define elf_backend_want_plt_sym 1 | |
3115 | ||
3116 | /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */ | |
3117 | #define elf_backend_plt_alignment 8 | |
3118 | ||
3119 | #define elf_backend_got_header_size 8 | |
3120 | #define elf_backend_plt_header_size PLT_HEADER_SIZE | |
3121 | ||
3122 | #include "elf64-target.h" |