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252b5132 RH |
1 | /* SPARC-specific support for 64-bit ELF |
2 | Copyright (C) 1993, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "bfd.h" | |
21 | #include "sysdep.h" | |
22 | #include "libbfd.h" | |
23 | #include "elf-bfd.h" | |
24 | ||
25 | /* This is defined if one wants to build upward compatible binaries | |
26 | with the original sparc64-elf toolchain. The support is kept in for | |
27 | now but is turned off by default. dje 970930 */ | |
28 | /*#define SPARC64_OLD_RELOCS*/ | |
29 | ||
30 | #include "elf/sparc.h" | |
31 | ||
32 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
33 | #define MINUS_ONE (~ (bfd_vma) 0) | |
34 | ||
587ff49e RH |
35 | static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create |
36 | PARAMS((bfd *)); | |
252b5132 RH |
37 | static reloc_howto_type *sparc64_elf_reloc_type_lookup |
38 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
39 | static void sparc64_elf_info_to_howto | |
40 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
41 | ||
42 | static void sparc64_elf_build_plt | |
43 | PARAMS((bfd *, unsigned char *, int)); | |
44 | static bfd_vma sparc64_elf_plt_entry_offset | |
45 | PARAMS((int)); | |
46 | static bfd_vma sparc64_elf_plt_ptr_offset | |
47 | PARAMS((int, int)); | |
48 | ||
49 | static boolean sparc64_elf_check_relocs | |
50 | PARAMS((bfd *, struct bfd_link_info *, asection *sec, | |
51 | const Elf_Internal_Rela *)); | |
52 | static boolean sparc64_elf_adjust_dynamic_symbol | |
53 | PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
54 | static boolean sparc64_elf_size_dynamic_sections | |
55 | PARAMS((bfd *, struct bfd_link_info *)); | |
587ff49e RH |
56 | static int sparc64_elf_get_symbol_type |
57 | PARAMS (( Elf_Internal_Sym *, int)); | |
58 | static boolean sparc64_elf_add_symbol_hook | |
59 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
60 | const char **, flagword *, asection **, bfd_vma *)); | |
61 | static void sparc64_elf_symbol_processing | |
62 | PARAMS ((bfd *, asymbol *)); | |
252b5132 RH |
63 | |
64 | static boolean sparc64_elf_merge_private_bfd_data | |
65 | PARAMS ((bfd *, bfd *)); | |
66 | ||
67 | static boolean sparc64_elf_relocate_section | |
68 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
69 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
70 | static boolean sparc64_elf_object_p PARAMS ((bfd *)); | |
f65054f7 RH |
71 | static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *)); |
72 | static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); | |
73 | static boolean sparc64_elf_slurp_one_reloc_table | |
74 | PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, boolean)); | |
75 | static boolean sparc64_elf_slurp_reloc_table | |
76 | PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
77 | static long sparc64_elf_canonicalize_dynamic_reloc | |
78 | PARAMS ((bfd *, arelent **, asymbol **)); | |
79 | static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR)); | |
252b5132 RH |
80 | \f |
81 | /* The relocation "howto" table. */ | |
82 | ||
83 | static bfd_reloc_status_type sparc_elf_notsup_reloc | |
84 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
85 | static bfd_reloc_status_type sparc_elf_wdisp16_reloc | |
86 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
87 | static bfd_reloc_status_type sparc_elf_hix22_reloc | |
88 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
89 | static bfd_reloc_status_type sparc_elf_lox10_reloc | |
90 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
91 | ||
92 | static reloc_howto_type sparc64_elf_howto_table[] = | |
93 | { | |
94 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), | |
95 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), | |
96 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), | |
97 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), | |
98 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), | |
99 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), | |
100 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true), | |
101 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), | |
102 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), | |
103 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), | |
104 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), | |
105 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), | |
106 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), | |
107 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), | |
108 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), | |
109 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), | |
110 | HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), | |
111 | HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), | |
112 | HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), | |
113 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), | |
114 | 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), | |
115 | 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), | |
116 | HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), | |
117 | HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true), | |
118 | #ifndef SPARC64_OLD_RELOCS | |
119 | /* These aren't implemented yet. */ | |
120 | HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), | |
121 | HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), | |
122 | HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), | |
123 | HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), | |
124 | HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), | |
125 | HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), | |
126 | #endif | |
127 | HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), | |
128 | HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), | |
129 | HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true), | |
130 | HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true), | |
131 | HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), | |
132 | HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), | |
133 | HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), | |
134 | 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), | |
135 | 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), | |
136 | 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), | |
137 | HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), | |
138 | HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), | |
139 | 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), | |
140 | HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), | |
141 | HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), | |
142 | HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), | |
143 | HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true), | |
144 | HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, false), | |
145 | HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false), | |
146 | HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false), | |
147 | HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false), | |
148 | HOWTO(R_SPARC_M44, 12,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false), | |
149 | HOWTO(R_SPARC_L44, 0,2,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false), | |
150 | HOWTO(R_SPARC_REGISTER, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false), | |
151 | HOWTO(R_SPARC_UA64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", false,0,MINUS_ONE, true), | |
152 | HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true) | |
153 | }; | |
154 | ||
155 | struct elf_reloc_map { | |
156 | bfd_reloc_code_real_type bfd_reloc_val; | |
157 | unsigned char elf_reloc_val; | |
158 | }; | |
159 | ||
160 | static CONST struct elf_reloc_map sparc_reloc_map[] = | |
161 | { | |
162 | { BFD_RELOC_NONE, R_SPARC_NONE, }, | |
163 | { BFD_RELOC_16, R_SPARC_16, }, | |
164 | { BFD_RELOC_8, R_SPARC_8 }, | |
165 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, | |
166 | { BFD_RELOC_CTOR, R_SPARC_64 }, | |
167 | { BFD_RELOC_32, R_SPARC_32 }, | |
168 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, | |
169 | { BFD_RELOC_HI22, R_SPARC_HI22 }, | |
170 | { BFD_RELOC_LO10, R_SPARC_LO10, }, | |
171 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, | |
172 | { BFD_RELOC_SPARC22, R_SPARC_22 }, | |
173 | { BFD_RELOC_SPARC13, R_SPARC_13 }, | |
174 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, | |
175 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, | |
176 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, | |
177 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, | |
178 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, | |
179 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, | |
180 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, | |
181 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, | |
182 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, | |
183 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, | |
184 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, | |
185 | /* ??? Doesn't dwarf use this? */ | |
186 | /*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ | |
187 | {BFD_RELOC_SPARC_10, R_SPARC_10}, | |
188 | {BFD_RELOC_SPARC_11, R_SPARC_11}, | |
189 | {BFD_RELOC_SPARC_64, R_SPARC_64}, | |
190 | {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10}, | |
191 | {BFD_RELOC_SPARC_HH22, R_SPARC_HH22}, | |
192 | {BFD_RELOC_SPARC_HM10, R_SPARC_HM10}, | |
193 | {BFD_RELOC_SPARC_LM22, R_SPARC_LM22}, | |
194 | {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22}, | |
195 | {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10}, | |
196 | {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22}, | |
197 | {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16}, | |
198 | {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19}, | |
199 | {BFD_RELOC_SPARC_7, R_SPARC_7}, | |
200 | {BFD_RELOC_SPARC_5, R_SPARC_5}, | |
201 | {BFD_RELOC_SPARC_6, R_SPARC_6}, | |
202 | {BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64}, | |
203 | {BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64}, | |
204 | {BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22}, | |
205 | {BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10}, | |
206 | {BFD_RELOC_SPARC_H44, R_SPARC_H44}, | |
207 | {BFD_RELOC_SPARC_M44, R_SPARC_M44}, | |
208 | {BFD_RELOC_SPARC_L44, R_SPARC_L44}, | |
209 | {BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER} | |
210 | }; | |
211 | ||
212 | static reloc_howto_type * | |
213 | sparc64_elf_reloc_type_lookup (abfd, code) | |
214 | bfd *abfd; | |
215 | bfd_reloc_code_real_type code; | |
216 | { | |
217 | unsigned int i; | |
218 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
219 | { | |
220 | if (sparc_reloc_map[i].bfd_reloc_val == code) | |
221 | return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; | |
222 | } | |
223 | return 0; | |
224 | } | |
225 | ||
226 | static void | |
227 | sparc64_elf_info_to_howto (abfd, cache_ptr, dst) | |
228 | bfd *abfd; | |
229 | arelent *cache_ptr; | |
230 | Elf64_Internal_Rela *dst; | |
231 | { | |
f65054f7 RH |
232 | BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std); |
233 | cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)]; | |
234 | } | |
235 | \f | |
236 | /* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA | |
237 | section can represent up to two relocs, we must tell the user to allocate | |
238 | more space. */ | |
239 | ||
240 | static long | |
241 | sparc64_elf_get_reloc_upper_bound (abfd, sec) | |
242 | bfd *abfd; | |
243 | asection *sec; | |
244 | { | |
245 | return (sec->reloc_count * 2 + 1) * sizeof (arelent *); | |
246 | } | |
247 | ||
248 | static long | |
249 | sparc64_elf_get_dynamic_reloc_upper_bound (abfd) | |
250 | bfd *abfd; | |
251 | { | |
252 | return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2; | |
253 | } | |
254 | ||
255 | /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of | |
256 | them. We cannot use generic elf routines for this, because R_SPARC_OLO10 | |
257 | has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations | |
258 | for the same location, R_SPARC_LO10 and R_SPARC_13. */ | |
259 | ||
260 | static boolean | |
261 | sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic) | |
262 | bfd *abfd; | |
263 | asection *asect; | |
264 | Elf_Internal_Shdr *rel_hdr; | |
265 | asymbol **symbols; | |
266 | boolean dynamic; | |
267 | { | |
268 | struct elf_backend_data * const ebd = get_elf_backend_data (abfd); | |
269 | PTR allocated = NULL; | |
270 | bfd_byte *native_relocs; | |
271 | arelent *relent; | |
272 | unsigned int i; | |
273 | int entsize; | |
274 | bfd_size_type count; | |
275 | arelent *relents; | |
276 | ||
277 | allocated = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size); | |
278 | if (allocated == NULL) | |
279 | goto error_return; | |
280 | ||
281 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 | |
282 | || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd) | |
283 | != rel_hdr->sh_size)) | |
284 | goto error_return; | |
285 | ||
286 | native_relocs = (bfd_byte *) allocated; | |
287 | ||
288 | relents = asect->relocation + asect->reloc_count; | |
289 | ||
290 | entsize = rel_hdr->sh_entsize; | |
291 | BFD_ASSERT (entsize == sizeof (Elf64_External_Rela)); | |
292 | ||
293 | count = rel_hdr->sh_size / entsize; | |
294 | ||
295 | for (i = 0, relent = relents; i < count; | |
296 | i++, relent++, native_relocs += entsize) | |
297 | { | |
298 | Elf_Internal_Rela rela; | |
299 | ||
300 | bfd_elf64_swap_reloca_in (abfd, (Elf64_External_Rela *) native_relocs, &rela); | |
301 | ||
302 | /* The address of an ELF reloc is section relative for an object | |
303 | file, and absolute for an executable file or shared library. | |
304 | The address of a normal BFD reloc is always section relative, | |
305 | and the address of a dynamic reloc is absolute.. */ | |
306 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) | |
307 | relent->address = rela.r_offset; | |
308 | else | |
309 | relent->address = rela.r_offset - asect->vma; | |
310 | ||
311 | if (ELF64_R_SYM (rela.r_info) == 0) | |
312 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
313 | else | |
314 | { | |
315 | asymbol **ps, *s; | |
316 | ||
317 | ps = symbols + ELF64_R_SYM (rela.r_info) - 1; | |
318 | s = *ps; | |
319 | ||
320 | /* Canonicalize ELF section symbols. FIXME: Why? */ | |
321 | if ((s->flags & BSF_SECTION_SYM) == 0) | |
322 | relent->sym_ptr_ptr = ps; | |
323 | else | |
324 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; | |
325 | } | |
326 | ||
327 | relent->addend = rela.r_addend; | |
328 | ||
329 | BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std); | |
330 | if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10) | |
331 | { | |
332 | relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10]; | |
333 | relent[1].address = relent->address; | |
334 | relent++; | |
335 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
336 | relent->addend = ELF64_R_TYPE_DATA (rela.r_info); | |
337 | relent->howto = &sparc64_elf_howto_table[R_SPARC_13]; | |
338 | } | |
339 | else | |
340 | relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)]; | |
341 | } | |
342 | ||
343 | asect->reloc_count += relent - relents; | |
344 | ||
345 | if (allocated != NULL) | |
346 | free (allocated); | |
347 | ||
348 | return true; | |
349 | ||
350 | error_return: | |
351 | if (allocated != NULL) | |
352 | free (allocated); | |
353 | return false; | |
354 | } | |
355 | ||
356 | /* Read in and swap the external relocs. */ | |
357 | ||
358 | static boolean | |
359 | sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic) | |
360 | bfd *abfd; | |
361 | asection *asect; | |
362 | asymbol **symbols; | |
363 | boolean dynamic; | |
364 | { | |
365 | struct bfd_elf_section_data * const d = elf_section_data (asect); | |
366 | Elf_Internal_Shdr *rel_hdr; | |
367 | Elf_Internal_Shdr *rel_hdr2; | |
368 | ||
369 | if (asect->relocation != NULL) | |
370 | return true; | |
371 | ||
372 | if (! dynamic) | |
373 | { | |
374 | if ((asect->flags & SEC_RELOC) == 0 | |
375 | || asect->reloc_count == 0) | |
376 | return true; | |
377 | ||
378 | rel_hdr = &d->rel_hdr; | |
379 | rel_hdr2 = d->rel_hdr2; | |
380 | ||
381 | BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset | |
382 | || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); | |
383 | } | |
384 | else | |
385 | { | |
386 | /* Note that ASECT->RELOC_COUNT tends not to be accurate in this | |
387 | case because relocations against this section may use the | |
388 | dynamic symbol table, and in that case bfd_section_from_shdr | |
389 | in elf.c does not update the RELOC_COUNT. */ | |
390 | if (asect->_raw_size == 0) | |
391 | return true; | |
392 | ||
393 | rel_hdr = &d->this_hdr; | |
394 | asect->reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize; | |
395 | rel_hdr2 = NULL; | |
396 | } | |
397 | ||
398 | asect->relocation = ((arelent *) | |
399 | bfd_alloc (abfd, | |
400 | asect->reloc_count * 2 * sizeof (arelent))); | |
401 | if (asect->relocation == NULL) | |
402 | return false; | |
403 | ||
404 | /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count. */ | |
405 | asect->reloc_count = 0; | |
406 | ||
407 | if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, | |
408 | dynamic)) | |
409 | return false; | |
410 | ||
411 | if (rel_hdr2 | |
412 | && !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols, | |
413 | dynamic)) | |
414 | return false; | |
415 | ||
416 | return true; | |
417 | } | |
418 | ||
419 | /* Canonicalize the dynamic relocation entries. Note that we return | |
420 | the dynamic relocations as a single block, although they are | |
421 | actually associated with particular sections; the interface, which | |
422 | was designed for SunOS style shared libraries, expects that there | |
423 | is only one set of dynamic relocs. Any section that was actually | |
424 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses | |
425 | the dynamic symbol table, is considered to be a dynamic reloc | |
426 | section. */ | |
427 | ||
428 | static long | |
429 | sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms) | |
430 | bfd *abfd; | |
431 | arelent **storage; | |
432 | asymbol **syms; | |
433 | { | |
434 | asection *s; | |
435 | long ret; | |
436 | ||
437 | if (elf_dynsymtab (abfd) == 0) | |
438 | { | |
439 | bfd_set_error (bfd_error_invalid_operation); | |
440 | return -1; | |
441 | } | |
442 | ||
443 | ret = 0; | |
444 | for (s = abfd->sections; s != NULL; s = s->next) | |
445 | { | |
446 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
447 | && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
448 | { | |
449 | arelent *p; | |
450 | long count, i; | |
451 | ||
452 | if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, true)) | |
453 | return -1; | |
454 | count = s->reloc_count; | |
455 | p = s->relocation; | |
456 | for (i = 0; i < count; i++) | |
457 | *storage++ = p++; | |
458 | ret += count; | |
459 | } | |
460 | } | |
461 | ||
462 | *storage = NULL; | |
463 | ||
464 | return ret; | |
465 | } | |
466 | ||
467 | /* Write out the relocs. */ | |
468 | ||
469 | static void | |
470 | sparc64_elf_write_relocs (abfd, sec, data) | |
471 | bfd *abfd; | |
472 | asection *sec; | |
473 | PTR data; | |
474 | { | |
475 | boolean *failedp = (boolean *) data; | |
476 | Elf_Internal_Shdr *rela_hdr; | |
477 | Elf64_External_Rela *outbound_relocas; | |
478 | unsigned int idx, count; | |
479 | asymbol *last_sym = 0; | |
480 | int last_sym_idx = 0; | |
481 | ||
482 | /* If we have already failed, don't do anything. */ | |
483 | if (*failedp) | |
484 | return; | |
485 | ||
486 | if ((sec->flags & SEC_RELOC) == 0) | |
487 | return; | |
488 | ||
489 | /* The linker backend writes the relocs out itself, and sets the | |
490 | reloc_count field to zero to inhibit writing them here. Also, | |
491 | sometimes the SEC_RELOC flag gets set even when there aren't any | |
492 | relocs. */ | |
493 | if (sec->reloc_count == 0) | |
494 | return; | |
495 | ||
496 | /* We can combine two relocs that refer to the same address | |
497 | into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the | |
498 | latter is R_SPARC_13 with no associated symbol. */ | |
499 | count = 0; | |
500 | for (idx = 0; idx < sec->reloc_count; idx++) | |
501 | { | |
502 | bfd_vma addr; | |
503 | unsigned int i; | |
504 | ||
505 | ++count; | |
506 | ||
507 | addr = sec->orelocation[idx]->address; | |
508 | if (sec->orelocation[idx]->howto->type == R_SPARC_LO10 | |
509 | && idx < sec->reloc_count - 1) | |
510 | { | |
511 | arelent *r = sec->orelocation[idx + 1]; | |
512 | ||
513 | if (r->howto->type == R_SPARC_13 | |
514 | && r->address == addr | |
515 | && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
516 | && (*r->sym_ptr_ptr)->value == 0) | |
517 | ++idx; | |
518 | } | |
519 | } | |
520 | ||
521 | rela_hdr = &elf_section_data (sec)->rel_hdr; | |
522 | ||
523 | rela_hdr->sh_size = rela_hdr->sh_entsize * count; | |
524 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); | |
525 | if (rela_hdr->contents == NULL) | |
526 | { | |
527 | *failedp = true; | |
528 | return; | |
529 | } | |
530 | ||
531 | /* Figure out whether the relocations are RELA or REL relocations. */ | |
532 | if (rela_hdr->sh_type != SHT_RELA) | |
533 | abort (); | |
534 | ||
535 | /* orelocation has the data, reloc_count has the count... */ | |
536 | outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents; | |
537 | ||
538 | for (idx = 0; idx < sec->reloc_count; idx++) | |
539 | { | |
540 | Elf_Internal_Rela dst_rela; | |
541 | Elf64_External_Rela *src_rela; | |
542 | arelent *ptr; | |
543 | asymbol *sym; | |
544 | int n; | |
545 | ||
546 | ptr = sec->orelocation[idx]; | |
547 | src_rela = outbound_relocas + idx; | |
548 | ||
549 | /* The address of an ELF reloc is section relative for an object | |
550 | file, and absolute for an executable file or shared library. | |
551 | The address of a BFD reloc is always section relative. */ | |
552 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
553 | dst_rela.r_offset = ptr->address; | |
554 | else | |
555 | dst_rela.r_offset = ptr->address + sec->vma; | |
556 | ||
557 | sym = *ptr->sym_ptr_ptr; | |
558 | if (sym == last_sym) | |
559 | n = last_sym_idx; | |
560 | else if (bfd_is_abs_section (sym->section) && sym->value == 0) | |
561 | n = STN_UNDEF; | |
562 | else | |
563 | { | |
564 | last_sym = sym; | |
565 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); | |
566 | if (n < 0) | |
567 | { | |
568 | *failedp = true; | |
569 | return; | |
570 | } | |
571 | last_sym_idx = n; | |
572 | } | |
573 | ||
574 | if ((*ptr->sym_ptr_ptr)->the_bfd != NULL | |
575 | && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec | |
576 | && ! _bfd_elf_validate_reloc (abfd, ptr)) | |
577 | { | |
578 | *failedp = true; | |
579 | return; | |
580 | } | |
581 | ||
582 | if (ptr->howto->type == R_SPARC_LO10 | |
583 | && idx < sec->reloc_count - 1) | |
584 | { | |
585 | arelent *r = sec->orelocation[idx + 1]; | |
586 | ||
587 | if (r->howto->type == R_SPARC_13 | |
588 | && r->address == ptr->address | |
589 | && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) | |
590 | && (*r->sym_ptr_ptr)->value == 0) | |
591 | { | |
592 | idx++; | |
593 | dst_rela.r_info | |
594 | = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend, | |
595 | R_SPARC_OLO10)); | |
596 | } | |
597 | else | |
598 | dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10); | |
599 | } | |
600 | else | |
601 | dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type); | |
602 | ||
603 | dst_rela.r_addend = ptr->addend; | |
604 | bfd_elf64_swap_reloca_out (abfd, &dst_rela, src_rela); | |
605 | } | |
252b5132 | 606 | } |
587ff49e RH |
607 | \f |
608 | /* Sparc64 ELF linker hash table. */ | |
609 | ||
610 | struct sparc64_elf_app_reg | |
611 | { | |
612 | unsigned char bind; | |
613 | unsigned short shndx; | |
614 | bfd *abfd; | |
615 | char *name; | |
616 | }; | |
617 | ||
618 | struct sparc64_elf_link_hash_table | |
619 | { | |
620 | struct elf_link_hash_table root; | |
621 | ||
622 | struct sparc64_elf_app_reg app_regs [4]; | |
623 | }; | |
624 | ||
625 | /* Get the Sparc64 ELF linker hash table from a link_info structure. */ | |
626 | ||
627 | #define sparc64_elf_hash_table(p) \ | |
628 | ((struct sparc64_elf_link_hash_table *) ((p)->hash)) | |
629 | ||
630 | /* Create a Sparc64 ELF linker hash table. */ | |
631 | ||
632 | static struct bfd_link_hash_table * | |
633 | sparc64_elf_bfd_link_hash_table_create (abfd) | |
634 | bfd *abfd; | |
635 | { | |
636 | struct sparc64_elf_link_hash_table *ret; | |
637 | ||
638 | ret = ((struct sparc64_elf_link_hash_table *) | |
639 | bfd_zalloc (abfd, sizeof (struct sparc64_elf_link_hash_table))); | |
640 | if (ret == (struct sparc64_elf_link_hash_table *) NULL) | |
641 | return NULL; | |
642 | ||
643 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
644 | _bfd_elf_link_hash_newfunc)) | |
645 | { | |
646 | bfd_release (abfd, ret); | |
647 | return NULL; | |
648 | } | |
649 | ||
650 | return &ret->root.root; | |
651 | } | |
652 | ||
252b5132 RH |
653 | \f |
654 | /* Utility for performing the standard initial work of an instruction | |
655 | relocation. | |
656 | *PRELOCATION will contain the relocated item. | |
657 | *PINSN will contain the instruction from the input stream. | |
658 | If the result is `bfd_reloc_other' the caller can continue with | |
659 | performing the relocation. Otherwise it must stop and return the | |
660 | value to its caller. */ | |
661 | ||
662 | static bfd_reloc_status_type | |
663 | init_insn_reloc (abfd, | |
664 | reloc_entry, | |
665 | symbol, | |
666 | data, | |
667 | input_section, | |
668 | output_bfd, | |
669 | prelocation, | |
670 | pinsn) | |
671 | bfd *abfd; | |
672 | arelent *reloc_entry; | |
673 | asymbol *symbol; | |
674 | PTR data; | |
675 | asection *input_section; | |
676 | bfd *output_bfd; | |
677 | bfd_vma *prelocation; | |
678 | bfd_vma *pinsn; | |
679 | { | |
680 | bfd_vma relocation; | |
681 | reloc_howto_type *howto = reloc_entry->howto; | |
682 | ||
683 | if (output_bfd != (bfd *) NULL | |
684 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
685 | && (! howto->partial_inplace | |
686 | || reloc_entry->addend == 0)) | |
687 | { | |
688 | reloc_entry->address += input_section->output_offset; | |
689 | return bfd_reloc_ok; | |
690 | } | |
691 | ||
692 | /* This works because partial_inplace == false. */ | |
693 | if (output_bfd != NULL) | |
694 | return bfd_reloc_continue; | |
695 | ||
696 | if (reloc_entry->address > input_section->_cooked_size) | |
697 | return bfd_reloc_outofrange; | |
698 | ||
699 | relocation = (symbol->value | |
700 | + symbol->section->output_section->vma | |
701 | + symbol->section->output_offset); | |
702 | relocation += reloc_entry->addend; | |
703 | if (howto->pc_relative) | |
704 | { | |
705 | relocation -= (input_section->output_section->vma | |
706 | + input_section->output_offset); | |
707 | relocation -= reloc_entry->address; | |
708 | } | |
709 | ||
710 | *prelocation = relocation; | |
711 | *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
712 | return bfd_reloc_other; | |
713 | } | |
714 | ||
715 | /* For unsupported relocs. */ | |
716 | ||
717 | static bfd_reloc_status_type | |
718 | sparc_elf_notsup_reloc (abfd, | |
719 | reloc_entry, | |
720 | symbol, | |
721 | data, | |
722 | input_section, | |
723 | output_bfd, | |
724 | error_message) | |
725 | bfd *abfd; | |
726 | arelent *reloc_entry; | |
727 | asymbol *symbol; | |
728 | PTR data; | |
729 | asection *input_section; | |
730 | bfd *output_bfd; | |
731 | char **error_message; | |
732 | { | |
733 | return bfd_reloc_notsupported; | |
734 | } | |
735 | ||
736 | /* Handle the WDISP16 reloc. */ | |
737 | ||
738 | static bfd_reloc_status_type | |
739 | sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
740 | output_bfd, error_message) | |
741 | bfd *abfd; | |
742 | arelent *reloc_entry; | |
743 | asymbol *symbol; | |
744 | PTR data; | |
745 | asection *input_section; | |
746 | bfd *output_bfd; | |
747 | char **error_message; | |
748 | { | |
749 | bfd_vma relocation; | |
750 | bfd_vma insn; | |
751 | bfd_reloc_status_type status; | |
752 | ||
753 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
754 | input_section, output_bfd, &relocation, &insn); | |
755 | if (status != bfd_reloc_other) | |
756 | return status; | |
757 | ||
758 | insn = (insn & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) | |
759 | | ((relocation >> 2) & 0x3fff)); | |
760 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
761 | ||
762 | if ((bfd_signed_vma) relocation < - 0x40000 | |
763 | || (bfd_signed_vma) relocation > 0x3ffff) | |
764 | return bfd_reloc_overflow; | |
765 | else | |
766 | return bfd_reloc_ok; | |
767 | } | |
768 | ||
769 | /* Handle the HIX22 reloc. */ | |
770 | ||
771 | static bfd_reloc_status_type | |
772 | sparc_elf_hix22_reloc (abfd, | |
773 | reloc_entry, | |
774 | symbol, | |
775 | data, | |
776 | input_section, | |
777 | output_bfd, | |
778 | error_message) | |
779 | bfd *abfd; | |
780 | arelent *reloc_entry; | |
781 | asymbol *symbol; | |
782 | PTR data; | |
783 | asection *input_section; | |
784 | bfd *output_bfd; | |
785 | char **error_message; | |
786 | { | |
787 | bfd_vma relocation; | |
788 | bfd_vma insn; | |
789 | bfd_reloc_status_type status; | |
790 | ||
791 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
792 | input_section, output_bfd, &relocation, &insn); | |
793 | if (status != bfd_reloc_other) | |
794 | return status; | |
795 | ||
796 | relocation ^= MINUS_ONE; | |
797 | insn = (insn & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); | |
798 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
799 | ||
800 | if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) | |
801 | return bfd_reloc_overflow; | |
802 | else | |
803 | return bfd_reloc_ok; | |
804 | } | |
805 | ||
806 | /* Handle the LOX10 reloc. */ | |
807 | ||
808 | static bfd_reloc_status_type | |
809 | sparc_elf_lox10_reloc (abfd, | |
810 | reloc_entry, | |
811 | symbol, | |
812 | data, | |
813 | input_section, | |
814 | output_bfd, | |
815 | error_message) | |
816 | bfd *abfd; | |
817 | arelent *reloc_entry; | |
818 | asymbol *symbol; | |
819 | PTR data; | |
820 | asection *input_section; | |
821 | bfd *output_bfd; | |
822 | char **error_message; | |
823 | { | |
824 | bfd_vma relocation; | |
825 | bfd_vma insn; | |
826 | bfd_reloc_status_type status; | |
827 | ||
828 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, | |
829 | input_section, output_bfd, &relocation, &insn); | |
830 | if (status != bfd_reloc_other) | |
831 | return status; | |
832 | ||
833 | insn = (insn & ~0x1fff) | 0x1c00 | (relocation & 0x3ff); | |
834 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
835 | ||
836 | return bfd_reloc_ok; | |
837 | } | |
838 | \f | |
839 | /* PLT/GOT stuff */ | |
840 | ||
841 | /* Both the headers and the entries are icache aligned. */ | |
842 | #define PLT_ENTRY_SIZE 32 | |
843 | #define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE) | |
844 | #define LARGE_PLT_THRESHOLD 32768 | |
845 | #define GOT_RESERVED_ENTRIES 1 | |
846 | ||
847 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" | |
848 | ||
849 | ||
850 | /* Fill in the .plt section. */ | |
851 | ||
852 | static void | |
853 | sparc64_elf_build_plt (output_bfd, contents, nentries) | |
854 | bfd *output_bfd; | |
855 | unsigned char *contents; | |
856 | int nentries; | |
857 | { | |
858 | const unsigned int nop = 0x01000000; | |
859 | int i, j; | |
860 | ||
861 | /* The first four entries are reserved, and are initially undefined. | |
862 | We fill them with `illtrap 0' to force ld.so to do something. */ | |
863 | ||
864 | for (i = 0; i < PLT_HEADER_SIZE/4; ++i) | |
865 | bfd_put_32 (output_bfd, 0, contents+i*4); | |
866 | ||
867 | /* The first 32768 entries are close enough to plt1 to get there via | |
868 | a straight branch. */ | |
869 | ||
870 | for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i) | |
871 | { | |
872 | unsigned char *entry = contents + i * PLT_ENTRY_SIZE; | |
873 | unsigned int sethi, ba; | |
874 | ||
875 | /* sethi (. - plt0), %g1 */ | |
876 | sethi = 0x03000000 | (i * PLT_ENTRY_SIZE); | |
877 | ||
a11c78e7 RH |
878 | /* ba,a,pt %xcc, plt1 */ |
879 | ba = 0x30680000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff); | |
252b5132 RH |
880 | |
881 | bfd_put_32 (output_bfd, sethi, entry); | |
882 | bfd_put_32 (output_bfd, ba, entry+4); | |
883 | bfd_put_32 (output_bfd, nop, entry+8); | |
884 | bfd_put_32 (output_bfd, nop, entry+12); | |
885 | bfd_put_32 (output_bfd, nop, entry+16); | |
886 | bfd_put_32 (output_bfd, nop, entry+20); | |
887 | bfd_put_32 (output_bfd, nop, entry+24); | |
888 | bfd_put_32 (output_bfd, nop, entry+28); | |
889 | } | |
890 | ||
891 | /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of | |
892 | 160: 160 entries and 160 pointers. This is to separate code from data, | |
893 | which is much friendlier on the cache. */ | |
894 | ||
895 | for (; i < nentries; i += 160) | |
896 | { | |
897 | int block = (i + 160 <= nentries ? 160 : nentries - i); | |
898 | for (j = 0; j < block; ++j) | |
899 | { | |
900 | unsigned char *entry, *ptr; | |
901 | unsigned int ldx; | |
902 | ||
903 | entry = contents + i*PLT_ENTRY_SIZE + j*4*6; | |
904 | ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8; | |
905 | ||
906 | /* ldx [%o7 + ptr - entry+4], %g1 */ | |
907 | ldx = 0xc25be000 | ((ptr - entry+4) & 0x1fff); | |
908 | ||
909 | bfd_put_32 (output_bfd, 0x8a10000f, entry); /* mov %o7,%g5 */ | |
910 | bfd_put_32 (output_bfd, 0x40000002, entry+4); /* call .+8 */ | |
911 | bfd_put_32 (output_bfd, nop, entry+8); /* nop */ | |
912 | bfd_put_32 (output_bfd, ldx, entry+12); /* ldx [%o7+P],%g1 */ | |
913 | bfd_put_32 (output_bfd, 0x83c3c001, entry+16); /* jmpl %o7+%g1,%g1 */ | |
914 | bfd_put_32 (output_bfd, 0x9e100005, entry+20); /* mov %g5,%o7 */ | |
915 | ||
a11c78e7 | 916 | bfd_put_64 (output_bfd, contents - (entry+4), ptr); |
252b5132 RH |
917 | } |
918 | } | |
919 | } | |
920 | ||
921 | /* Return the offset of a particular plt entry within the .plt section. */ | |
922 | ||
923 | static bfd_vma | |
924 | sparc64_elf_plt_entry_offset (index) | |
925 | int index; | |
926 | { | |
927 | int block, ofs; | |
928 | ||
929 | if (index < LARGE_PLT_THRESHOLD) | |
930 | return index * PLT_ENTRY_SIZE; | |
931 | ||
932 | /* See above for details. */ | |
933 | ||
934 | block = (index - LARGE_PLT_THRESHOLD) / 160; | |
935 | ofs = (index - LARGE_PLT_THRESHOLD) % 160; | |
936 | ||
937 | return ((bfd_vma)(LARGE_PLT_THRESHOLD + block*160) * PLT_ENTRY_SIZE | |
938 | + ofs * 6*4); | |
939 | } | |
940 | ||
941 | static bfd_vma | |
942 | sparc64_elf_plt_ptr_offset (index, max) | |
943 | int index, max; | |
944 | { | |
945 | int block, ofs, last; | |
946 | ||
947 | BFD_ASSERT(index >= LARGE_PLT_THRESHOLD); | |
948 | ||
949 | /* See above for details. */ | |
950 | ||
a11c78e7 RH |
951 | block = (((index - LARGE_PLT_THRESHOLD) / 160) * 160) |
952 | + LARGE_PLT_THRESHOLD; | |
953 | ofs = index - block; | |
954 | if (block + 160 > max) | |
955 | last = (max - LARGE_PLT_THRESHOLD) % 160; | |
956 | else | |
957 | last = 160; | |
252b5132 | 958 | |
a11c78e7 | 959 | return (block * PLT_ENTRY_SIZE |
252b5132 RH |
960 | + last * 6*4 |
961 | + ofs * 8); | |
962 | } | |
963 | ||
964 | ||
965 | \f | |
966 | /* Look through the relocs for a section during the first phase, and | |
967 | allocate space in the global offset table or procedure linkage | |
968 | table. */ | |
969 | ||
970 | static boolean | |
971 | sparc64_elf_check_relocs (abfd, info, sec, relocs) | |
972 | bfd *abfd; | |
973 | struct bfd_link_info *info; | |
974 | asection *sec; | |
975 | const Elf_Internal_Rela *relocs; | |
976 | { | |
977 | bfd *dynobj; | |
978 | Elf_Internal_Shdr *symtab_hdr; | |
979 | struct elf_link_hash_entry **sym_hashes; | |
980 | bfd_vma *local_got_offsets; | |
981 | const Elf_Internal_Rela *rel; | |
982 | const Elf_Internal_Rela *rel_end; | |
983 | asection *sgot; | |
984 | asection *srelgot; | |
985 | asection *sreloc; | |
986 | ||
987 | if (info->relocateable || !(sec->flags & SEC_ALLOC)) | |
988 | return true; | |
989 | ||
990 | dynobj = elf_hash_table (info)->dynobj; | |
991 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
992 | sym_hashes = elf_sym_hashes (abfd); | |
993 | local_got_offsets = elf_local_got_offsets (abfd); | |
994 | ||
995 | sgot = NULL; | |
996 | srelgot = NULL; | |
997 | sreloc = NULL; | |
998 | ||
999 | rel_end = relocs + sec->reloc_count; | |
1000 | for (rel = relocs; rel < rel_end; rel++) | |
1001 | { | |
1002 | unsigned long r_symndx; | |
1003 | struct elf_link_hash_entry *h; | |
1004 | ||
1005 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1006 | if (r_symndx < symtab_hdr->sh_info) | |
1007 | h = NULL; | |
1008 | else | |
1009 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1010 | ||
f65054f7 | 1011 | switch (ELF64_R_TYPE_ID (rel->r_info)) |
252b5132 RH |
1012 | { |
1013 | case R_SPARC_GOT10: | |
1014 | case R_SPARC_GOT13: | |
1015 | case R_SPARC_GOT22: | |
1016 | /* This symbol requires a global offset table entry. */ | |
1017 | ||
1018 | if (dynobj == NULL) | |
1019 | { | |
1020 | /* Create the .got section. */ | |
1021 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1022 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
1023 | return false; | |
1024 | } | |
1025 | ||
1026 | if (sgot == NULL) | |
1027 | { | |
1028 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1029 | BFD_ASSERT (sgot != NULL); | |
1030 | } | |
1031 | ||
1032 | if (srelgot == NULL && (h != NULL || info->shared)) | |
1033 | { | |
1034 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1035 | if (srelgot == NULL) | |
1036 | { | |
1037 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
1038 | if (srelgot == NULL | |
1039 | || ! bfd_set_section_flags (dynobj, srelgot, | |
1040 | (SEC_ALLOC | |
1041 | | SEC_LOAD | |
1042 | | SEC_HAS_CONTENTS | |
1043 | | SEC_IN_MEMORY | |
1044 | | SEC_LINKER_CREATED | |
1045 | | SEC_READONLY)) | |
1046 | || ! bfd_set_section_alignment (dynobj, srelgot, 3)) | |
1047 | return false; | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | if (h != NULL) | |
1052 | { | |
1053 | if (h->got.offset != (bfd_vma) -1) | |
1054 | { | |
1055 | /* We have already allocated space in the .got. */ | |
1056 | break; | |
1057 | } | |
1058 | h->got.offset = sgot->_raw_size; | |
1059 | ||
1060 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1061 | if (h->dynindx == -1) | |
1062 | { | |
1063 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
1064 | return false; | |
1065 | } | |
1066 | ||
1067 | srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
1068 | } | |
1069 | else | |
1070 | { | |
1071 | /* This is a global offset table entry for a local | |
1072 | symbol. */ | |
1073 | if (local_got_offsets == NULL) | |
1074 | { | |
1075 | size_t size; | |
1076 | register unsigned int i; | |
1077 | ||
1078 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
1079 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
1080 | if (local_got_offsets == NULL) | |
1081 | return false; | |
1082 | elf_local_got_offsets (abfd) = local_got_offsets; | |
1083 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1084 | local_got_offsets[i] = (bfd_vma) -1; | |
1085 | } | |
1086 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
1087 | { | |
1088 | /* We have already allocated space in the .got. */ | |
1089 | break; | |
1090 | } | |
1091 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
1092 | ||
1093 | if (info->shared) | |
1094 | { | |
1095 | /* If we are generating a shared object, we need to | |
1096 | output a R_SPARC_RELATIVE reloc so that the | |
1097 | dynamic linker can adjust this GOT entry. */ | |
1098 | srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | sgot->_raw_size += 8; | |
1103 | ||
1104 | #if 0 | |
1105 | /* Doesn't work for 64-bit -fPIC, since sethi/or builds | |
1106 | unsigned numbers. If we permit ourselves to modify | |
1107 | code so we get sethi/xor, this could work. | |
1108 | Question: do we consider conditionally re-enabling | |
1109 | this for -fpic, once we know about object code models? */ | |
1110 | /* If the .got section is more than 0x1000 bytes, we add | |
1111 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 | |
1112 | bit relocations have a greater chance of working. */ | |
1113 | if (sgot->_raw_size >= 0x1000 | |
1114 | && elf_hash_table (info)->hgot->root.u.def.value == 0) | |
1115 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; | |
1116 | #endif | |
1117 | ||
1118 | break; | |
1119 | ||
1120 | case R_SPARC_WPLT30: | |
1121 | case R_SPARC_PLT32: | |
1122 | case R_SPARC_HIPLT22: | |
1123 | case R_SPARC_LOPLT10: | |
1124 | case R_SPARC_PCPLT32: | |
1125 | case R_SPARC_PCPLT22: | |
1126 | case R_SPARC_PCPLT10: | |
1127 | case R_SPARC_PLT64: | |
1128 | /* This symbol requires a procedure linkage table entry. We | |
1129 | actually build the entry in adjust_dynamic_symbol, | |
1130 | because this might be a case of linking PIC code without | |
1131 | linking in any dynamic objects, in which case we don't | |
1132 | need to generate a procedure linkage table after all. */ | |
1133 | ||
1134 | if (h == NULL) | |
1135 | { | |
1136 | /* It does not make sense to have a procedure linkage | |
1137 | table entry for a local symbol. */ | |
1138 | bfd_set_error (bfd_error_bad_value); | |
1139 | return false; | |
1140 | } | |
1141 | ||
1142 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1143 | if (h->dynindx == -1) | |
1144 | { | |
1145 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
1146 | return false; | |
1147 | } | |
1148 | ||
1149 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
1150 | break; | |
1151 | ||
1152 | case R_SPARC_PC10: | |
1153 | case R_SPARC_PC22: | |
1154 | case R_SPARC_PC_HH22: | |
1155 | case R_SPARC_PC_HM10: | |
1156 | case R_SPARC_PC_LM22: | |
1157 | if (h != NULL | |
1158 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1159 | break; | |
1160 | /* Fall through. */ | |
1161 | case R_SPARC_DISP8: | |
1162 | case R_SPARC_DISP16: | |
1163 | case R_SPARC_DISP32: | |
1164 | case R_SPARC_DISP64: | |
1165 | case R_SPARC_WDISP30: | |
1166 | case R_SPARC_WDISP22: | |
1167 | case R_SPARC_WDISP19: | |
1168 | case R_SPARC_WDISP16: | |
1169 | if (h == NULL) | |
1170 | break; | |
1171 | /* Fall through. */ | |
1172 | case R_SPARC_8: | |
1173 | case R_SPARC_16: | |
1174 | case R_SPARC_32: | |
1175 | case R_SPARC_HI22: | |
1176 | case R_SPARC_22: | |
1177 | case R_SPARC_13: | |
1178 | case R_SPARC_LO10: | |
1179 | case R_SPARC_UA32: | |
1180 | case R_SPARC_10: | |
1181 | case R_SPARC_11: | |
1182 | case R_SPARC_64: | |
1183 | case R_SPARC_OLO10: | |
1184 | case R_SPARC_HH22: | |
1185 | case R_SPARC_HM10: | |
1186 | case R_SPARC_LM22: | |
1187 | case R_SPARC_7: | |
1188 | case R_SPARC_5: | |
1189 | case R_SPARC_6: | |
1190 | case R_SPARC_HIX22: | |
1191 | case R_SPARC_LOX10: | |
1192 | case R_SPARC_H44: | |
1193 | case R_SPARC_M44: | |
1194 | case R_SPARC_L44: | |
1195 | case R_SPARC_UA64: | |
1196 | case R_SPARC_UA16: | |
1197 | /* When creating a shared object, we must copy these relocs | |
1198 | into the output file. We create a reloc section in | |
1199 | dynobj and make room for the reloc. | |
1200 | ||
1201 | But don't do this for debugging sections -- this shows up | |
1202 | with DWARF2 -- first because they are not loaded, and | |
1203 | second because DWARF sez the debug info is not to be | |
1204 | biased by the load address. */ | |
1205 | if (info->shared && (sec->flags & SEC_ALLOC)) | |
1206 | { | |
1207 | if (sreloc == NULL) | |
1208 | { | |
1209 | const char *name; | |
1210 | ||
1211 | name = (bfd_elf_string_from_elf_section | |
1212 | (abfd, | |
1213 | elf_elfheader (abfd)->e_shstrndx, | |
1214 | elf_section_data (sec)->rel_hdr.sh_name)); | |
1215 | if (name == NULL) | |
1216 | return false; | |
1217 | ||
1218 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1219 | && strcmp (bfd_get_section_name (abfd, sec), | |
1220 | name + 5) == 0); | |
1221 | ||
1222 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1223 | if (sreloc == NULL) | |
1224 | { | |
1225 | flagword flags; | |
1226 | ||
1227 | sreloc = bfd_make_section (dynobj, name); | |
1228 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1229 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1230 | if ((sec->flags & SEC_ALLOC) != 0) | |
1231 | flags |= SEC_ALLOC | SEC_LOAD; | |
1232 | if (sreloc == NULL | |
1233 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
1234 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) | |
1235 | return false; | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | sreloc->_raw_size += sizeof (Elf64_External_Rela); | |
1240 | } | |
1241 | break; | |
1242 | ||
1243 | case R_SPARC_REGISTER: | |
1244 | /* Nothing to do. */ | |
1245 | break; | |
1246 | ||
1247 | default: | |
1248 | (*_bfd_error_handler)(_("%s: check_relocs: unhandled reloc type %d"), | |
1249 | bfd_get_filename(abfd), | |
f65054f7 | 1250 | ELF64_R_TYPE_ID (rel->r_info)); |
252b5132 RH |
1251 | return false; |
1252 | } | |
1253 | } | |
1254 | ||
1255 | return true; | |
1256 | } | |
1257 | ||
587ff49e RH |
1258 | /* Hook called by the linker routine which adds symbols from an object |
1259 | file. We use it for STT_REGISTER symbols. */ | |
1260 | ||
1261 | static boolean | |
1262 | sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
1263 | bfd *abfd; | |
1264 | struct bfd_link_info *info; | |
1265 | const Elf_Internal_Sym *sym; | |
1266 | const char **namep; | |
1267 | flagword *flagsp; | |
1268 | asection **secp; | |
1269 | bfd_vma *valp; | |
1270 | { | |
1271 | static char *stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" }; | |
1272 | ||
1273 | if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER) | |
1274 | { | |
1275 | int reg; | |
1276 | struct sparc64_elf_app_reg *p; | |
1277 | ||
1278 | reg = (int)sym->st_value; | |
1279 | switch (reg & ~1) | |
1280 | { | |
1281 | case 2: reg -= 2; break; | |
1282 | case 6: reg -= 4; break; | |
1283 | default: | |
1284 | (*_bfd_error_handler) | |
1285 | (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"), | |
1286 | bfd_get_filename (abfd)); | |
1287 | return false; | |
1288 | } | |
1289 | ||
1290 | if (info->hash->creator != abfd->xvec | |
1291 | || (abfd->flags & DYNAMIC) != 0) | |
1292 | { | |
1293 | /* STT_REGISTER only works when linking an elf64_sparc object. | |
1294 | If STT_REGISTER comes from a dynamic object, don't put it into | |
1295 | the output bfd. The dynamic linker will recheck it. */ | |
1296 | *namep = NULL; | |
1297 | return true; | |
1298 | } | |
1299 | ||
1300 | p = sparc64_elf_hash_table(info)->app_regs + reg; | |
1301 | ||
1302 | if (p->name != NULL && strcmp (p->name, *namep)) | |
1303 | { | |
1304 | (*_bfd_error_handler) | |
1305 | (_("Register %%g%d used incompatibly: " | |
1306 | "previously declared in %s to %s, in %s redefined to %s"), | |
1307 | (int)sym->st_value, | |
1308 | bfd_get_filename (p->abfd), *p->name ? p->name : "#scratch", | |
1309 | bfd_get_filename (abfd), **namep ? *namep : "#scratch"); | |
1310 | return false; | |
1311 | } | |
1312 | ||
1313 | if (p->name == NULL) | |
1314 | { | |
1315 | if (**namep) | |
1316 | { | |
1317 | struct elf_link_hash_entry *h; | |
1318 | ||
1319 | h = (struct elf_link_hash_entry *) | |
1320 | bfd_link_hash_lookup (info->hash, *namep, false, false, false); | |
1321 | ||
1322 | if (h != NULL) | |
1323 | { | |
1324 | unsigned char type = h->type; | |
1325 | ||
1326 | if (type > STT_FUNC) type = 0; | |
1327 | (*_bfd_error_handler) | |
1328 | (_("Symbol `%s' has differing types: " | |
1329 | "previously %s, REGISTER in %s"), | |
1330 | *namep, stt_types [type], bfd_get_filename (abfd)); | |
1331 | return false; | |
1332 | } | |
1333 | ||
1334 | p->name = bfd_hash_allocate (&info->hash->table, | |
1335 | strlen (*namep) + 1); | |
1336 | if (!p->name) | |
1337 | return false; | |
1338 | ||
1339 | strcpy (p->name, *namep); | |
1340 | } | |
1341 | else | |
1342 | p->name = ""; | |
1343 | p->bind = ELF_ST_BIND (sym->st_info); | |
1344 | p->abfd = abfd; | |
1345 | p->shndx = sym->st_shndx; | |
1346 | } | |
1347 | else | |
1348 | { | |
1349 | if (p->bind == STB_WEAK | |
1350 | && ELF_ST_BIND (sym->st_info) == STB_GLOBAL) | |
1351 | { | |
1352 | p->bind = STB_GLOBAL; | |
1353 | p->abfd = abfd; | |
1354 | } | |
1355 | } | |
1356 | *namep = NULL; | |
1357 | return true; | |
1358 | } | |
1359 | else if (! *namep || ! **namep) | |
1360 | return true; | |
1361 | else | |
1362 | { | |
1363 | int i; | |
1364 | struct sparc64_elf_app_reg *p; | |
1365 | ||
1366 | p = sparc64_elf_hash_table(info)->app_regs; | |
1367 | for (i = 0; i < 4; i++, p++) | |
1368 | if (p->name != NULL && ! strcmp (p->name, *namep)) | |
1369 | { | |
1370 | unsigned char type = ELF_ST_TYPE (sym->st_info); | |
1371 | ||
1372 | if (type > STT_FUNC) type = 0; | |
1373 | (*_bfd_error_handler) | |
1374 | (_("Symbol `%s' has differing types: " | |
1375 | "REGISTER in %s, %s in %s"), | |
1376 | *namep, bfd_get_filename (p->abfd), stt_types [type], | |
1377 | bfd_get_filename (abfd)); | |
1378 | return false; | |
1379 | } | |
1380 | } | |
1381 | return true; | |
1382 | } | |
1383 | ||
1384 | /* This function takes care of emiting STT_REGISTER symbols | |
1385 | which we cannot easily keep in the symbol hash table. */ | |
1386 | ||
1387 | static boolean | |
1388 | sparc64_elf_output_arch_syms (output_bfd, info, finfo, func) | |
1389 | bfd *output_bfd; | |
1390 | struct bfd_link_info *info; | |
1391 | PTR finfo; | |
1392 | boolean (*func) PARAMS ((PTR, const char *, | |
1393 | Elf_Internal_Sym *, asection *)); | |
1394 | { | |
1395 | int reg; | |
1396 | struct sparc64_elf_app_reg *app_regs = | |
1397 | sparc64_elf_hash_table(info)->app_regs; | |
1398 | Elf_Internal_Sym sym; | |
1399 | ||
1400 | /* We arranged in size_dynamic_sections to put the STT_REGISTER entries | |
1401 | at the end of the dynlocal list, so they came at the end of the local | |
1402 | symbols in the symtab. Except that they aren't STB_LOCAL, so we need | |
1403 | to back up symtab->sh_info. */ | |
1404 | if (elf_hash_table (info)->dynlocal) | |
1405 | { | |
1fa0ddb3 RH |
1406 | bfd * dynobj = elf_hash_table (info)->dynobj; |
1407 | asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym"); | |
587ff49e RH |
1408 | struct elf_link_local_dynamic_entry *e; |
1409 | ||
1410 | for (e = elf_hash_table (info)->dynlocal; e ; e = e->next) | |
1411 | if (e->input_indx == -1) | |
1412 | break; | |
1413 | if (e) | |
1414 | { | |
1415 | elf_section_data (dynsymsec->output_section)->this_hdr.sh_info | |
1416 | = e->dynindx; | |
1417 | } | |
1418 | } | |
1419 | ||
1420 | if (info->strip == strip_all) | |
1421 | return true; | |
1422 | ||
1423 | for (reg = 0; reg < 4; reg++) | |
1424 | if (app_regs [reg].name != NULL) | |
1425 | { | |
1426 | if (info->strip == strip_some | |
1427 | && bfd_hash_lookup (info->keep_hash, | |
1428 | app_regs [reg].name, | |
1429 | false, false) == NULL) | |
1430 | continue; | |
1431 | ||
1432 | sym.st_value = reg < 2 ? reg + 2 : reg + 4; | |
1433 | sym.st_size = 0; | |
1434 | sym.st_other = 0; | |
1435 | sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER); | |
1436 | sym.st_shndx = app_regs [reg].shndx; | |
1437 | if (! (*func) (finfo, app_regs [reg].name, &sym, | |
1438 | sym.st_shndx == SHN_ABS | |
1439 | ? bfd_abs_section_ptr : bfd_und_section_ptr)) | |
1440 | return false; | |
1441 | } | |
1442 | ||
1443 | return true; | |
1444 | } | |
1445 | ||
1446 | static int | |
1447 | sparc64_elf_get_symbol_type (elf_sym, type) | |
1448 | Elf_Internal_Sym * elf_sym; | |
1449 | int type; | |
1450 | { | |
1451 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER) | |
1452 | return STT_REGISTER; | |
1453 | else | |
1454 | return type; | |
1455 | } | |
1456 | ||
1457 | /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL | |
1458 | even in SHN_UNDEF section. */ | |
1459 | ||
1460 | static void | |
1461 | sparc64_elf_symbol_processing (abfd, asym) | |
1462 | bfd *abfd; | |
1463 | asymbol *asym; | |
1464 | { | |
1465 | elf_symbol_type *elfsym; | |
1466 | ||
1467 | elfsym = (elf_symbol_type *) asym; | |
1468 | if (elfsym->internal_elf_sym.st_info | |
1469 | == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER)) | |
1470 | { | |
1471 | asym->flags |= BSF_GLOBAL; | |
1472 | } | |
1473 | } | |
1474 | ||
252b5132 RH |
1475 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1476 | regular object. The current definition is in some section of the | |
1477 | dynamic object, but we're not including those sections. We have to | |
1478 | change the definition to something the rest of the link can | |
1479 | understand. */ | |
1480 | ||
1481 | static boolean | |
1482 | sparc64_elf_adjust_dynamic_symbol (info, h) | |
1483 | struct bfd_link_info *info; | |
1484 | struct elf_link_hash_entry *h; | |
1485 | { | |
1486 | bfd *dynobj; | |
1487 | asection *s; | |
1488 | unsigned int power_of_two; | |
1489 | ||
1490 | dynobj = elf_hash_table (info)->dynobj; | |
1491 | ||
1492 | /* Make sure we know what is going on here. */ | |
1493 | BFD_ASSERT (dynobj != NULL | |
1494 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
1495 | || h->weakdef != NULL | |
1496 | || ((h->elf_link_hash_flags | |
1497 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1498 | && (h->elf_link_hash_flags | |
1499 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
1500 | && (h->elf_link_hash_flags | |
1501 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
1502 | ||
1503 | /* If this is a function, put it in the procedure linkage table. We | |
1504 | will fill in the contents of the procedure linkage table later | |
1505 | (although we could actually do it here). The STT_NOTYPE | |
1506 | condition is a hack specifically for the Oracle libraries | |
1507 | delivered for Solaris; for some inexplicable reason, they define | |
1508 | some of their functions as STT_NOTYPE when they really should be | |
1509 | STT_FUNC. */ | |
1510 | if (h->type == STT_FUNC | |
1511 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 | |
1512 | || (h->type == STT_NOTYPE | |
1513 | && (h->root.type == bfd_link_hash_defined | |
1514 | || h->root.type == bfd_link_hash_defweak) | |
1515 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) | |
1516 | { | |
1517 | if (! elf_hash_table (info)->dynamic_sections_created) | |
1518 | { | |
1519 | /* This case can occur if we saw a WPLT30 reloc in an input | |
1520 | file, but none of the input files were dynamic objects. | |
1521 | In such a case, we don't actually need to build a | |
1522 | procedure linkage table, and we can just do a WDISP30 | |
1523 | reloc instead. */ | |
1524 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
1525 | return true; | |
1526 | } | |
1527 | ||
1528 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1529 | BFD_ASSERT (s != NULL); | |
1530 | ||
1531 | /* The first four bit in .plt is reserved. */ | |
1532 | if (s->_raw_size == 0) | |
1533 | s->_raw_size = PLT_HEADER_SIZE; | |
1534 | ||
1535 | /* If this symbol is not defined in a regular file, and we are | |
1536 | not generating a shared library, then set the symbol to this | |
1537 | location in the .plt. This is required to make function | |
1538 | pointers compare as equal between the normal executable and | |
1539 | the shared library. */ | |
1540 | if (! info->shared | |
1541 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1542 | { | |
1543 | h->root.u.def.section = s; | |
1544 | h->root.u.def.value = s->_raw_size; | |
1545 | } | |
1546 | ||
1547 | /* To simplify matters later, just store the plt index here. */ | |
1548 | h->plt.offset = s->_raw_size / PLT_ENTRY_SIZE; | |
1549 | ||
1550 | /* Make room for this entry. */ | |
1551 | s->_raw_size += PLT_ENTRY_SIZE; | |
1552 | ||
1553 | /* We also need to make an entry in the .rela.plt section. */ | |
1554 | ||
1555 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1556 | BFD_ASSERT (s != NULL); | |
1557 | ||
1558 | /* The first plt entries are reserved, and the relocations must | |
1559 | pair up exactly. */ | |
1560 | if (s->_raw_size == 0) | |
1561 | s->_raw_size += (PLT_HEADER_SIZE/PLT_ENTRY_SIZE | |
1562 | * sizeof (Elf64_External_Rela)); | |
1563 | ||
1564 | s->_raw_size += sizeof (Elf64_External_Rela); | |
1565 | ||
1566 | /* The procedure linkage table size is bounded by the magnitude | |
1567 | of the offset we can describe in the entry. */ | |
1568 | if (s->_raw_size >= (bfd_vma)1 << 32) | |
1569 | { | |
1570 | bfd_set_error (bfd_error_bad_value); | |
1571 | return false; | |
1572 | } | |
1573 | ||
1574 | return true; | |
1575 | } | |
1576 | ||
1577 | /* If this is a weak symbol, and there is a real definition, the | |
1578 | processor independent code will have arranged for us to see the | |
1579 | real definition first, and we can just use the same value. */ | |
1580 | if (h->weakdef != NULL) | |
1581 | { | |
1582 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1583 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1584 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1585 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1586 | return true; | |
1587 | } | |
1588 | ||
1589 | /* This is a reference to a symbol defined by a dynamic object which | |
1590 | is not a function. */ | |
1591 | ||
1592 | /* If we are creating a shared library, we must presume that the | |
1593 | only references to the symbol are via the global offset table. | |
1594 | For such cases we need not do anything here; the relocations will | |
1595 | be handled correctly by relocate_section. */ | |
1596 | if (info->shared) | |
1597 | return true; | |
1598 | ||
1599 | /* We must allocate the symbol in our .dynbss section, which will | |
1600 | become part of the .bss section of the executable. There will be | |
1601 | an entry for this symbol in the .dynsym section. The dynamic | |
1602 | object will contain position independent code, so all references | |
1603 | from the dynamic object to this symbol will go through the global | |
1604 | offset table. The dynamic linker will use the .dynsym entry to | |
1605 | determine the address it must put in the global offset table, so | |
1606 | both the dynamic object and the regular object will refer to the | |
1607 | same memory location for the variable. */ | |
1608 | ||
1609 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1610 | BFD_ASSERT (s != NULL); | |
1611 | ||
1612 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker | |
1613 | to copy the initial value out of the dynamic object and into the | |
1614 | runtime process image. We need to remember the offset into the | |
1615 | .rel.bss section we are going to use. */ | |
1616 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1617 | { | |
1618 | asection *srel; | |
1619 | ||
1620 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1621 | BFD_ASSERT (srel != NULL); | |
1622 | srel->_raw_size += sizeof (Elf64_External_Rela); | |
1623 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
1624 | } | |
1625 | ||
1626 | /* We need to figure out the alignment required for this symbol. I | |
1627 | have no idea how ELF linkers handle this. 16-bytes is the size | |
1628 | of the largest type that requires hard alignment -- long double. */ | |
1629 | power_of_two = bfd_log2 (h->size); | |
1630 | if (power_of_two > 4) | |
1631 | power_of_two = 4; | |
1632 | ||
1633 | /* Apply the required alignment. */ | |
1634 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
1635 | (bfd_size_type) (1 << power_of_two)); | |
1636 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
1637 | { | |
1638 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
1639 | return false; | |
1640 | } | |
1641 | ||
1642 | /* Define the symbol as being at this point in the section. */ | |
1643 | h->root.u.def.section = s; | |
1644 | h->root.u.def.value = s->_raw_size; | |
1645 | ||
1646 | /* Increment the section size to make room for the symbol. */ | |
1647 | s->_raw_size += h->size; | |
1648 | ||
1649 | return true; | |
1650 | } | |
1651 | ||
1652 | /* Set the sizes of the dynamic sections. */ | |
1653 | ||
1654 | static boolean | |
1655 | sparc64_elf_size_dynamic_sections (output_bfd, info) | |
1656 | bfd *output_bfd; | |
1657 | struct bfd_link_info *info; | |
1658 | { | |
1659 | bfd *dynobj; | |
1660 | asection *s; | |
1661 | boolean reltext; | |
1662 | boolean relplt; | |
1663 | ||
1664 | dynobj = elf_hash_table (info)->dynobj; | |
1665 | BFD_ASSERT (dynobj != NULL); | |
1666 | ||
1667 | if (elf_hash_table (info)->dynamic_sections_created) | |
1668 | { | |
1669 | /* Set the contents of the .interp section to the interpreter. */ | |
1670 | if (! info->shared) | |
1671 | { | |
1672 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1673 | BFD_ASSERT (s != NULL); | |
1674 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1675 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1676 | } | |
1677 | } | |
1678 | else | |
1679 | { | |
1680 | /* We may have created entries in the .rela.got section. | |
1681 | However, if we are not creating the dynamic sections, we will | |
1682 | not actually use these entries. Reset the size of .rela.got, | |
1683 | which will cause it to get stripped from the output file | |
1684 | below. */ | |
1685 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1686 | if (s != NULL) | |
1687 | s->_raw_size = 0; | |
1688 | } | |
1689 | ||
1690 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1691 | determined the sizes of the various dynamic sections. Allocate | |
1692 | memory for them. */ | |
1693 | reltext = false; | |
1694 | relplt = false; | |
1695 | for (s = dynobj->sections; s != NULL; s = s->next) | |
1696 | { | |
1697 | const char *name; | |
1698 | boolean strip; | |
1699 | ||
1700 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1701 | continue; | |
1702 | ||
1703 | /* It's OK to base decisions on the section name, because none | |
1704 | of the dynobj section names depend upon the input files. */ | |
1705 | name = bfd_get_section_name (dynobj, s); | |
1706 | ||
1707 | strip = false; | |
1708 | ||
1709 | if (strncmp (name, ".rela", 5) == 0) | |
1710 | { | |
1711 | if (s->_raw_size == 0) | |
1712 | { | |
1713 | /* If we don't need this section, strip it from the | |
1714 | output file. This is to handle .rela.bss and | |
1715 | .rel.plt. We must create it in | |
1716 | create_dynamic_sections, because it must be created | |
1717 | before the linker maps input sections to output | |
1718 | sections. The linker does that before | |
1719 | adjust_dynamic_symbol is called, and it is that | |
1720 | function which decides whether anything needs to go | |
1721 | into these sections. */ | |
1722 | strip = true; | |
1723 | } | |
1724 | else | |
1725 | { | |
1726 | const char *outname; | |
1727 | asection *target; | |
1728 | ||
1729 | /* If this relocation section applies to a read only | |
1730 | section, then we probably need a DT_TEXTREL entry. */ | |
1731 | outname = bfd_get_section_name (output_bfd, | |
1732 | s->output_section); | |
1733 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1734 | if (target != NULL | |
1735 | && (target->flags & SEC_READONLY) != 0) | |
1736 | reltext = true; | |
1737 | ||
1738 | if (strcmp (name, ".rela.plt") == 0) | |
1739 | relplt = true; | |
1740 | ||
1741 | /* We use the reloc_count field as a counter if we need | |
1742 | to copy relocs into the output file. */ | |
1743 | s->reloc_count = 0; | |
1744 | } | |
1745 | } | |
1746 | else if (strcmp (name, ".plt") != 0 | |
1747 | && strncmp (name, ".got", 4) != 0) | |
1748 | { | |
1749 | /* It's not one of our sections, so don't allocate space. */ | |
1750 | continue; | |
1751 | } | |
1752 | ||
1753 | if (strip) | |
1754 | { | |
1755 | _bfd_strip_section_from_output (s); | |
1756 | continue; | |
1757 | } | |
1758 | ||
1759 | /* Allocate memory for the section contents. Zero the memory | |
1760 | for the benefit of .rela.plt, which has 4 unused entries | |
1761 | at the beginning, and we don't want garbage. */ | |
1762 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
1763 | if (s->contents == NULL && s->_raw_size != 0) | |
1764 | return false; | |
1765 | } | |
1766 | ||
1767 | if (elf_hash_table (info)->dynamic_sections_created) | |
1768 | { | |
1769 | /* Add some entries to the .dynamic section. We fill in the | |
1770 | values later, in sparc64_elf_finish_dynamic_sections, but we | |
1771 | must add the entries now so that we get the correct size for | |
1772 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1773 | dynamic linker and used by the debugger. */ | |
587ff49e RH |
1774 | int reg; |
1775 | struct sparc64_elf_app_reg * app_regs; | |
1776 | struct bfd_strtab_hash *dynstr; | |
1777 | struct elf_link_hash_table *eht = elf_hash_table (info); | |
1778 | ||
252b5132 RH |
1779 | if (! info->shared) |
1780 | { | |
1781 | if (! bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) | |
1782 | return false; | |
1783 | } | |
1784 | ||
1785 | if (relplt) | |
1786 | { | |
1787 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0) | |
1788 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
1789 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
d6bcbdc1 | 1790 | || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) |
252b5132 RH |
1791 | return false; |
1792 | } | |
1793 | ||
1794 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) | |
1795 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) | |
1796 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, | |
1797 | sizeof (Elf64_External_Rela))) | |
1798 | return false; | |
1799 | ||
1800 | if (reltext) | |
1801 | { | |
1802 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
1803 | return false; | |
1804 | } | |
587ff49e RH |
1805 | |
1806 | /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER | |
1807 | entries if needed. */ | |
1808 | app_regs = sparc64_elf_hash_table (info)->app_regs; | |
1809 | dynstr = eht->dynstr; | |
1810 | ||
1811 | for (reg = 0; reg < 4; reg++) | |
1812 | if (app_regs [reg].name != NULL) | |
1813 | { | |
1814 | struct elf_link_local_dynamic_entry *entry, *e; | |
1815 | ||
1816 | if (! bfd_elf64_add_dynamic_entry (info, DT_SPARC_REGISTER, 0)) | |
1817 | return false; | |
1818 | ||
1819 | entry = (struct elf_link_local_dynamic_entry *) | |
1820 | bfd_hash_allocate (&info->hash->table, sizeof (*entry)); | |
1821 | if (entry == NULL) | |
1822 | return false; | |
1823 | ||
1824 | /* We cheat here a little bit: the symbol will not be local, so we | |
1825 | put it at the end of the dynlocal linked list. We will fix it | |
1826 | later on, as we have to fix other fields anyway. */ | |
1827 | entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; | |
1828 | entry->isym.st_size = 0; | |
1829 | if (*app_regs [reg].name != '\0') | |
1830 | entry->isym.st_name | |
1831 | = _bfd_stringtab_add (dynstr, app_regs[reg].name, true, false); | |
1832 | else | |
1833 | entry->isym.st_name = 0; | |
1834 | entry->isym.st_other = 0; | |
1835 | entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, | |
1836 | STT_REGISTER); | |
1837 | entry->isym.st_shndx = app_regs [reg].shndx; | |
1838 | entry->next = NULL; | |
1839 | entry->input_bfd = output_bfd; | |
1840 | entry->input_indx = -1; | |
1841 | ||
1842 | if (eht->dynlocal == NULL) | |
1843 | eht->dynlocal = entry; | |
1844 | else | |
1845 | { | |
1846 | for (e = eht->dynlocal; e->next; e = e->next) | |
1847 | ; | |
1848 | e->next = entry; | |
1849 | } | |
1850 | eht->dynsymcount++; | |
1851 | } | |
252b5132 RH |
1852 | } |
1853 | ||
252b5132 RH |
1854 | return true; |
1855 | } | |
252b5132 RH |
1856 | \f |
1857 | /* Relocate a SPARC64 ELF section. */ | |
1858 | ||
1859 | static boolean | |
1860 | sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
1861 | contents, relocs, local_syms, local_sections) | |
1862 | bfd *output_bfd; | |
1863 | struct bfd_link_info *info; | |
1864 | bfd *input_bfd; | |
1865 | asection *input_section; | |
1866 | bfd_byte *contents; | |
1867 | Elf_Internal_Rela *relocs; | |
1868 | Elf_Internal_Sym *local_syms; | |
1869 | asection **local_sections; | |
1870 | { | |
1871 | bfd *dynobj; | |
1872 | Elf_Internal_Shdr *symtab_hdr; | |
1873 | struct elf_link_hash_entry **sym_hashes; | |
1874 | bfd_vma *local_got_offsets; | |
1875 | bfd_vma got_base; | |
1876 | asection *sgot; | |
1877 | asection *splt; | |
1878 | asection *sreloc; | |
1879 | Elf_Internal_Rela *rel; | |
1880 | Elf_Internal_Rela *relend; | |
1881 | ||
1882 | dynobj = elf_hash_table (info)->dynobj; | |
1883 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1884 | sym_hashes = elf_sym_hashes (input_bfd); | |
1885 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1886 | ||
1887 | if (elf_hash_table(info)->hgot == NULL) | |
1888 | got_base = 0; | |
1889 | else | |
1890 | got_base = elf_hash_table (info)->hgot->root.u.def.value; | |
1891 | ||
1892 | sgot = splt = sreloc = NULL; | |
1893 | ||
1894 | rel = relocs; | |
1895 | relend = relocs + input_section->reloc_count; | |
1896 | for (; rel < relend; rel++) | |
1897 | { | |
1898 | int r_type; | |
1899 | reloc_howto_type *howto; | |
1900 | long r_symndx; | |
1901 | struct elf_link_hash_entry *h; | |
1902 | Elf_Internal_Sym *sym; | |
1903 | asection *sec; | |
1904 | bfd_vma relocation; | |
1905 | bfd_reloc_status_type r; | |
1906 | ||
f65054f7 | 1907 | r_type = ELF64_R_TYPE_ID (rel->r_info); |
60dac299 | 1908 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
252b5132 RH |
1909 | { |
1910 | bfd_set_error (bfd_error_bad_value); | |
1911 | return false; | |
1912 | } | |
1913 | howto = sparc64_elf_howto_table + r_type; | |
1914 | ||
1915 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1916 | ||
1917 | if (info->relocateable) | |
1918 | { | |
1919 | /* This is a relocateable link. We don't have to change | |
1920 | anything, unless the reloc is against a section symbol, | |
1921 | in which case we have to adjust according to where the | |
1922 | section symbol winds up in the output section. */ | |
1923 | if (r_symndx < symtab_hdr->sh_info) | |
1924 | { | |
1925 | sym = local_syms + r_symndx; | |
1926 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1927 | { | |
1928 | sec = local_sections[r_symndx]; | |
1929 | rel->r_addend += sec->output_offset + sym->st_value; | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | continue; | |
1934 | } | |
1935 | ||
1936 | /* This is a final link. */ | |
1937 | h = NULL; | |
1938 | sym = NULL; | |
1939 | sec = NULL; | |
1940 | if (r_symndx < symtab_hdr->sh_info) | |
1941 | { | |
1942 | sym = local_syms + r_symndx; | |
1943 | sec = local_sections[r_symndx]; | |
1944 | relocation = (sec->output_section->vma | |
1945 | + sec->output_offset | |
1946 | + sym->st_value); | |
1947 | } | |
1948 | else | |
1949 | { | |
1950 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1951 | while (h->root.type == bfd_link_hash_indirect | |
1952 | || h->root.type == bfd_link_hash_warning) | |
1953 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1954 | if (h->root.type == bfd_link_hash_defined | |
1955 | || h->root.type == bfd_link_hash_defweak) | |
1956 | { | |
1957 | boolean skip_it = false; | |
1958 | sec = h->root.u.def.section; | |
1959 | ||
1960 | switch (r_type) | |
1961 | { | |
1962 | case R_SPARC_WPLT30: | |
1963 | case R_SPARC_PLT32: | |
1964 | case R_SPARC_HIPLT22: | |
1965 | case R_SPARC_LOPLT10: | |
1966 | case R_SPARC_PCPLT32: | |
1967 | case R_SPARC_PCPLT22: | |
1968 | case R_SPARC_PCPLT10: | |
1969 | case R_SPARC_PLT64: | |
1970 | if (h->plt.offset != (bfd_vma) -1) | |
1971 | skip_it = true; | |
1972 | break; | |
1973 | ||
1974 | case R_SPARC_GOT10: | |
1975 | case R_SPARC_GOT13: | |
1976 | case R_SPARC_GOT22: | |
1977 | if (elf_hash_table(info)->dynamic_sections_created | |
1978 | && (!info->shared | |
1979 | || (!info->symbolic && h->dynindx != -1) | |
1980 | || !(h->elf_link_hash_flags | |
1981 | & ELF_LINK_HASH_DEF_REGULAR))) | |
1982 | skip_it = true; | |
1983 | break; | |
1984 | ||
1985 | case R_SPARC_PC10: | |
1986 | case R_SPARC_PC22: | |
1987 | case R_SPARC_PC_HH22: | |
1988 | case R_SPARC_PC_HM10: | |
1989 | case R_SPARC_PC_LM22: | |
1990 | if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) | |
1991 | break; | |
1992 | /* FALLTHRU */ | |
1993 | ||
1994 | case R_SPARC_8: | |
1995 | case R_SPARC_16: | |
1996 | case R_SPARC_32: | |
1997 | case R_SPARC_DISP8: | |
1998 | case R_SPARC_DISP16: | |
1999 | case R_SPARC_DISP32: | |
2000 | case R_SPARC_WDISP30: | |
2001 | case R_SPARC_WDISP22: | |
2002 | case R_SPARC_HI22: | |
2003 | case R_SPARC_22: | |
2004 | case R_SPARC_13: | |
2005 | case R_SPARC_LO10: | |
2006 | case R_SPARC_UA32: | |
2007 | case R_SPARC_10: | |
2008 | case R_SPARC_11: | |
2009 | case R_SPARC_64: | |
2010 | case R_SPARC_OLO10: | |
2011 | case R_SPARC_HH22: | |
2012 | case R_SPARC_HM10: | |
2013 | case R_SPARC_LM22: | |
2014 | case R_SPARC_WDISP19: | |
2015 | case R_SPARC_WDISP16: | |
2016 | case R_SPARC_7: | |
2017 | case R_SPARC_5: | |
2018 | case R_SPARC_6: | |
2019 | case R_SPARC_DISP64: | |
2020 | case R_SPARC_HIX22: | |
2021 | case R_SPARC_LOX10: | |
2022 | case R_SPARC_H44: | |
2023 | case R_SPARC_M44: | |
2024 | case R_SPARC_L44: | |
2025 | case R_SPARC_UA64: | |
2026 | case R_SPARC_UA16: | |
2027 | if (info->shared | |
2028 | && ((!info->symbolic && h->dynindx != -1) | |
2029 | || !(h->elf_link_hash_flags | |
2030 | & ELF_LINK_HASH_DEF_REGULAR))) | |
2031 | skip_it = true; | |
2032 | break; | |
2033 | } | |
2034 | ||
2035 | if (skip_it) | |
2036 | { | |
2037 | /* In these cases, we don't need the relocation | |
2038 | value. We check specially because in some | |
2039 | obscure cases sec->output_section will be NULL. */ | |
2040 | relocation = 0; | |
2041 | } | |
2042 | else | |
2043 | { | |
2044 | relocation = (h->root.u.def.value | |
2045 | + sec->output_section->vma | |
2046 | + sec->output_offset); | |
2047 | } | |
2048 | } | |
2049 | else if (h->root.type == bfd_link_hash_undefweak) | |
2050 | relocation = 0; | |
2051 | else if (info->shared && !info->symbolic && !info->no_undefined) | |
2052 | relocation = 0; | |
2053 | else | |
2054 | { | |
2055 | if (! ((*info->callbacks->undefined_symbol) | |
2056 | (info, h->root.root.string, input_bfd, | |
2057 | input_section, rel->r_offset))) | |
2058 | return false; | |
2059 | relocation = 0; | |
2060 | } | |
2061 | } | |
2062 | ||
2063 | /* When generating a shared object, these relocations are copied | |
2064 | into the output file to be resolved at run time. */ | |
2065 | if (info->shared && (input_section->flags & SEC_ALLOC)) | |
2066 | { | |
2067 | switch (r_type) | |
2068 | { | |
2069 | case R_SPARC_PC10: | |
2070 | case R_SPARC_PC22: | |
2071 | case R_SPARC_PC_HH22: | |
2072 | case R_SPARC_PC_HM10: | |
2073 | case R_SPARC_PC_LM22: | |
2074 | if (h != NULL | |
2075 | && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) | |
2076 | break; | |
2077 | /* Fall through. */ | |
2078 | case R_SPARC_DISP8: | |
2079 | case R_SPARC_DISP16: | |
2080 | case R_SPARC_DISP32: | |
2081 | case R_SPARC_WDISP30: | |
2082 | case R_SPARC_WDISP22: | |
2083 | case R_SPARC_WDISP19: | |
2084 | case R_SPARC_WDISP16: | |
2085 | case R_SPARC_DISP64: | |
2086 | if (h == NULL) | |
2087 | break; | |
2088 | /* Fall through. */ | |
2089 | case R_SPARC_8: | |
2090 | case R_SPARC_16: | |
2091 | case R_SPARC_32: | |
2092 | case R_SPARC_HI22: | |
2093 | case R_SPARC_22: | |
2094 | case R_SPARC_13: | |
2095 | case R_SPARC_LO10: | |
2096 | case R_SPARC_UA32: | |
2097 | case R_SPARC_10: | |
2098 | case R_SPARC_11: | |
2099 | case R_SPARC_64: | |
2100 | case R_SPARC_OLO10: | |
2101 | case R_SPARC_HH22: | |
2102 | case R_SPARC_HM10: | |
2103 | case R_SPARC_LM22: | |
2104 | case R_SPARC_7: | |
2105 | case R_SPARC_5: | |
2106 | case R_SPARC_6: | |
2107 | case R_SPARC_HIX22: | |
2108 | case R_SPARC_LOX10: | |
2109 | case R_SPARC_H44: | |
2110 | case R_SPARC_M44: | |
2111 | case R_SPARC_L44: | |
2112 | case R_SPARC_UA64: | |
2113 | case R_SPARC_UA16: | |
2114 | { | |
2115 | Elf_Internal_Rela outrel; | |
2116 | boolean skip; | |
2117 | ||
2118 | if (sreloc == NULL) | |
2119 | { | |
2120 | const char *name = | |
2121 | (bfd_elf_string_from_elf_section | |
2122 | (input_bfd, | |
2123 | elf_elfheader (input_bfd)->e_shstrndx, | |
2124 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
2125 | ||
2126 | if (name == NULL) | |
2127 | return false; | |
2128 | ||
2129 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
2130 | && strcmp (bfd_get_section_name(input_bfd, | |
2131 | input_section), | |
2132 | name + 5) == 0); | |
2133 | ||
2134 | sreloc = bfd_get_section_by_name (dynobj, name); | |
2135 | BFD_ASSERT (sreloc != NULL); | |
2136 | } | |
2137 | ||
2138 | skip = false; | |
2139 | ||
2140 | if (elf_section_data (input_section)->stab_info == NULL) | |
2141 | outrel.r_offset = rel->r_offset; | |
2142 | else | |
2143 | { | |
2144 | bfd_vma off; | |
2145 | ||
2146 | off = (_bfd_stab_section_offset | |
2147 | (output_bfd, &elf_hash_table (info)->stab_info, | |
2148 | input_section, | |
2149 | &elf_section_data (input_section)->stab_info, | |
2150 | rel->r_offset)); | |
2151 | if (off == MINUS_ONE) | |
2152 | skip = true; | |
2153 | outrel.r_offset = off; | |
2154 | } | |
2155 | ||
2156 | outrel.r_offset += (input_section->output_section->vma | |
2157 | + input_section->output_offset); | |
2158 | ||
2159 | /* Optimize unaligned reloc usage now that we know where | |
2160 | it finally resides. */ | |
2161 | switch (r_type) | |
2162 | { | |
2163 | case R_SPARC_16: | |
2164 | if (outrel.r_offset & 1) r_type = R_SPARC_UA16; | |
2165 | break; | |
2166 | case R_SPARC_UA16: | |
2167 | if (!(outrel.r_offset & 1)) r_type = R_SPARC_16; | |
2168 | break; | |
2169 | case R_SPARC_32: | |
2170 | if (outrel.r_offset & 3) r_type = R_SPARC_UA32; | |
2171 | break; | |
2172 | case R_SPARC_UA32: | |
2173 | if (!(outrel.r_offset & 3)) r_type = R_SPARC_32; | |
2174 | break; | |
2175 | case R_SPARC_64: | |
2176 | if (outrel.r_offset & 7) r_type = R_SPARC_UA64; | |
2177 | break; | |
2178 | case R_SPARC_UA64: | |
2179 | if (!(outrel.r_offset & 7)) r_type = R_SPARC_64; | |
2180 | break; | |
2181 | } | |
2182 | ||
2183 | if (skip) | |
2184 | memset (&outrel, 0, sizeof outrel); | |
2185 | /* h->dynindx may be -1 if the symbol was marked to | |
2186 | become local. */ | |
2187 | else if (h != NULL | |
2188 | && ((! info->symbolic && h->dynindx != -1) | |
2189 | || (h->elf_link_hash_flags | |
2190 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
2191 | { | |
2192 | BFD_ASSERT (h->dynindx != -1); | |
f65054f7 RH |
2193 | outrel.r_info |
2194 | = ELF64_R_INFO (h->dynindx, | |
2195 | ELF64_R_TYPE_INFO ( | |
2196 | ELF64_R_TYPE_DATA (rel->r_info), | |
2197 | r_type)); | |
252b5132 RH |
2198 | outrel.r_addend = rel->r_addend; |
2199 | } | |
2200 | else | |
2201 | { | |
2202 | if (r_type == R_SPARC_64) | |
2203 | { | |
2204 | outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); | |
2205 | outrel.r_addend = relocation + rel->r_addend; | |
2206 | } | |
2207 | else | |
2208 | { | |
2209 | long indx; | |
2210 | ||
2211 | if (h == NULL) | |
2212 | sec = local_sections[r_symndx]; | |
2213 | else | |
2214 | { | |
2215 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
2216 | || (h->root.type | |
2217 | == bfd_link_hash_defweak)); | |
2218 | sec = h->root.u.def.section; | |
2219 | } | |
2220 | if (sec != NULL && bfd_is_abs_section (sec)) | |
2221 | indx = 0; | |
2222 | else if (sec == NULL || sec->owner == NULL) | |
2223 | { | |
2224 | bfd_set_error (bfd_error_bad_value); | |
2225 | return false; | |
2226 | } | |
2227 | else | |
2228 | { | |
2229 | asection *osec; | |
2230 | ||
2231 | osec = sec->output_section; | |
2232 | indx = elf_section_data (osec)->dynindx; | |
2233 | ||
2234 | /* FIXME: we really should be able to link non-pic | |
2235 | shared libraries. */ | |
2236 | if (indx == 0) | |
2237 | { | |
2238 | BFD_FAIL (); | |
2239 | (*_bfd_error_handler) | |
2240 | (_("%s: probably compiled without -fPIC?"), | |
2241 | bfd_get_filename (input_bfd)); | |
2242 | bfd_set_error (bfd_error_bad_value); | |
2243 | return false; | |
2244 | } | |
2245 | } | |
2246 | ||
f65054f7 RH |
2247 | outrel.r_info |
2248 | = ELF64_R_INFO (indx, | |
2249 | ELF64_R_TYPE_INFO ( | |
2250 | ELF64_R_TYPE_DATA (rel->r_info), | |
2251 | r_type)); | |
840a9995 | 2252 | outrel.r_addend = relocation + rel->r_addend; |
252b5132 RH |
2253 | } |
2254 | } | |
2255 | ||
2256 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
2257 | (((Elf64_External_Rela *) | |
2258 | sreloc->contents) | |
2259 | + sreloc->reloc_count)); | |
2260 | ++sreloc->reloc_count; | |
2261 | ||
2262 | /* This reloc will be computed at runtime, so there's no | |
2263 | need to do anything now, unless this is a RELATIVE | |
2264 | reloc in an unallocated section. */ | |
2265 | if (skip | |
2266 | || (input_section->flags & SEC_ALLOC) != 0 | |
f65054f7 | 2267 | || ELF64_R_TYPE_ID (outrel.r_info) != R_SPARC_RELATIVE) |
252b5132 RH |
2268 | continue; |
2269 | } | |
2270 | break; | |
2271 | } | |
2272 | } | |
2273 | ||
2274 | switch (r_type) | |
2275 | { | |
2276 | case R_SPARC_GOT10: | |
2277 | case R_SPARC_GOT13: | |
2278 | case R_SPARC_GOT22: | |
2279 | /* Relocation is to the entry for this symbol in the global | |
2280 | offset table. */ | |
2281 | if (sgot == NULL) | |
2282 | { | |
2283 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2284 | BFD_ASSERT (sgot != NULL); | |
2285 | } | |
2286 | ||
2287 | if (h != NULL) | |
2288 | { | |
2289 | bfd_vma off = h->got.offset; | |
2290 | BFD_ASSERT (off != (bfd_vma) -1); | |
2291 | ||
2292 | if (! elf_hash_table (info)->dynamic_sections_created | |
2293 | || (info->shared | |
2294 | && (info->symbolic || h->dynindx == -1) | |
2295 | && (h->elf_link_hash_flags | |
2296 | & ELF_LINK_HASH_DEF_REGULAR))) | |
2297 | { | |
2298 | /* This is actually a static link, or it is a -Bsymbolic | |
2299 | link and the symbol is defined locally, or the symbol | |
2300 | was forced to be local because of a version file. We | |
2301 | must initialize this entry in the global offset table. | |
2302 | Since the offset must always be a multiple of 8, we | |
2303 | use the least significant bit to record whether we | |
2304 | have initialized it already. | |
2305 | ||
2306 | When doing a dynamic link, we create a .rela.got | |
2307 | relocation entry to initialize the value. This is | |
2308 | done in the finish_dynamic_symbol routine. */ | |
2309 | ||
2310 | if ((off & 1) != 0) | |
2311 | off &= ~1; | |
2312 | else | |
2313 | { | |
2314 | bfd_put_64 (output_bfd, relocation, | |
2315 | sgot->contents + off); | |
2316 | h->got.offset |= 1; | |
2317 | } | |
2318 | } | |
2319 | relocation = sgot->output_offset + off - got_base; | |
2320 | } | |
2321 | else | |
2322 | { | |
2323 | bfd_vma off; | |
2324 | ||
2325 | BFD_ASSERT (local_got_offsets != NULL); | |
2326 | off = local_got_offsets[r_symndx]; | |
2327 | BFD_ASSERT (off != (bfd_vma) -1); | |
2328 | ||
2329 | /* The offset must always be a multiple of 8. We use | |
2330 | the least significant bit to record whether we have | |
2331 | already processed this entry. */ | |
2332 | if ((off & 1) != 0) | |
2333 | off &= ~1; | |
2334 | else | |
2335 | { | |
2336 | bfd_put_64 (output_bfd, relocation, sgot->contents + off); | |
2337 | local_got_offsets[r_symndx] |= 1; | |
2338 | ||
2339 | if (info->shared) | |
2340 | { | |
2341 | asection *srelgot; | |
2342 | Elf_Internal_Rela outrel; | |
2343 | ||
2344 | /* We need to generate a R_SPARC_RELATIVE reloc | |
2345 | for the dynamic linker. */ | |
2346 | srelgot = bfd_get_section_by_name(dynobj, ".rela.got"); | |
2347 | BFD_ASSERT (srelgot != NULL); | |
2348 | ||
2349 | outrel.r_offset = (sgot->output_section->vma | |
2350 | + sgot->output_offset | |
2351 | + off); | |
2352 | outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); | |
2353 | outrel.r_addend = relocation; | |
2354 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
2355 | (((Elf64_External_Rela *) | |
2356 | srelgot->contents) | |
2357 | + srelgot->reloc_count)); | |
2358 | ++srelgot->reloc_count; | |
2359 | } | |
2360 | } | |
2361 | relocation = sgot->output_offset + off - got_base; | |
2362 | } | |
2363 | goto do_default; | |
2364 | ||
2365 | case R_SPARC_WPLT30: | |
2366 | case R_SPARC_PLT32: | |
2367 | case R_SPARC_HIPLT22: | |
2368 | case R_SPARC_LOPLT10: | |
2369 | case R_SPARC_PCPLT32: | |
2370 | case R_SPARC_PCPLT22: | |
2371 | case R_SPARC_PCPLT10: | |
2372 | case R_SPARC_PLT64: | |
2373 | /* Relocation is to the entry for this symbol in the | |
2374 | procedure linkage table. */ | |
2375 | BFD_ASSERT (h != NULL); | |
2376 | ||
2377 | if (h->plt.offset == (bfd_vma) -1) | |
2378 | { | |
2379 | /* We didn't make a PLT entry for this symbol. This | |
2380 | happens when statically linking PIC code, or when | |
2381 | using -Bsymbolic. */ | |
2382 | goto do_default; | |
2383 | } | |
2384 | ||
2385 | if (splt == NULL) | |
2386 | { | |
2387 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2388 | BFD_ASSERT (splt != NULL); | |
2389 | } | |
2390 | ||
2391 | relocation = (splt->output_section->vma | |
2392 | + splt->output_offset | |
2393 | + sparc64_elf_plt_entry_offset (h->plt.offset)); | |
2394 | goto do_default; | |
2395 | ||
2396 | case R_SPARC_OLO10: | |
2397 | { | |
2398 | bfd_vma x; | |
2399 | ||
2400 | relocation += rel->r_addend; | |
2401 | relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); | |
2402 | ||
2403 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2404 | x = (x & ~0x1fff) | (relocation & 0x1fff); | |
2405 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2406 | ||
2407 | r = bfd_check_overflow (howto->complain_on_overflow, | |
2408 | howto->bitsize, howto->rightshift, | |
2409 | bfd_arch_bits_per_address (input_bfd), | |
2410 | relocation); | |
2411 | } | |
2412 | break; | |
2413 | ||
2414 | case R_SPARC_WDISP16: | |
2415 | { | |
2416 | bfd_vma x; | |
2417 | ||
2418 | relocation += rel->r_addend; | |
2419 | /* Adjust for pc-relative-ness. */ | |
2420 | relocation -= (input_section->output_section->vma | |
2421 | + input_section->output_offset); | |
2422 | relocation -= rel->r_offset; | |
2423 | ||
2424 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2425 | x = (x & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) | |
2426 | | ((relocation >> 2) & 0x3fff)); | |
2427 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2428 | ||
2429 | r = bfd_check_overflow (howto->complain_on_overflow, | |
2430 | howto->bitsize, howto->rightshift, | |
2431 | bfd_arch_bits_per_address (input_bfd), | |
2432 | relocation); | |
2433 | } | |
2434 | break; | |
2435 | ||
2436 | case R_SPARC_HIX22: | |
2437 | { | |
2438 | bfd_vma x; | |
2439 | ||
2440 | relocation += rel->r_addend; | |
2441 | relocation = relocation ^ MINUS_ONE; | |
2442 | ||
2443 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2444 | x = (x & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); | |
2445 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2446 | ||
2447 | r = bfd_check_overflow (howto->complain_on_overflow, | |
2448 | howto->bitsize, howto->rightshift, | |
2449 | bfd_arch_bits_per_address (input_bfd), | |
2450 | relocation); | |
2451 | } | |
2452 | break; | |
2453 | ||
2454 | case R_SPARC_LOX10: | |
2455 | { | |
2456 | bfd_vma x; | |
2457 | ||
2458 | relocation += rel->r_addend; | |
2459 | relocation = (relocation & 0x3ff) | 0x1c00; | |
2460 | ||
2461 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2462 | x = (x & ~0x1fff) | relocation; | |
2463 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); | |
2464 | ||
2465 | r = bfd_reloc_ok; | |
2466 | } | |
2467 | break; | |
2468 | ||
2469 | default: | |
2470 | do_default: | |
2471 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2472 | contents, rel->r_offset, | |
2473 | relocation, rel->r_addend); | |
2474 | break; | |
2475 | } | |
2476 | ||
2477 | switch (r) | |
2478 | { | |
2479 | case bfd_reloc_ok: | |
2480 | break; | |
2481 | ||
2482 | default: | |
2483 | case bfd_reloc_outofrange: | |
2484 | abort (); | |
2485 | ||
2486 | case bfd_reloc_overflow: | |
2487 | { | |
2488 | const char *name; | |
2489 | ||
2490 | if (h != NULL) | |
2491 | { | |
2492 | if (h->root.type == bfd_link_hash_undefweak | |
2493 | && howto->pc_relative) | |
2494 | { | |
2495 | /* Assume this is a call protected by other code that | |
2496 | detect the symbol is undefined. If this is the case, | |
2497 | we can safely ignore the overflow. If not, the | |
2498 | program is hosed anyway, and a little warning isn't | |
2499 | going to help. */ | |
2500 | break; | |
2501 | } | |
2502 | ||
2503 | name = h->root.root.string; | |
2504 | } | |
2505 | else | |
2506 | { | |
2507 | name = (bfd_elf_string_from_elf_section | |
2508 | (input_bfd, | |
2509 | symtab_hdr->sh_link, | |
2510 | sym->st_name)); | |
2511 | if (name == NULL) | |
2512 | return false; | |
2513 | if (*name == '\0') | |
2514 | name = bfd_section_name (input_bfd, sec); | |
2515 | } | |
2516 | if (! ((*info->callbacks->reloc_overflow) | |
2517 | (info, name, howto->name, (bfd_vma) 0, | |
2518 | input_bfd, input_section, rel->r_offset))) | |
2519 | return false; | |
2520 | } | |
2521 | break; | |
2522 | } | |
2523 | } | |
2524 | ||
2525 | return true; | |
2526 | } | |
2527 | ||
2528 | /* Finish up dynamic symbol handling. We set the contents of various | |
2529 | dynamic sections here. */ | |
2530 | ||
2531 | static boolean | |
2532 | sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
2533 | bfd *output_bfd; | |
2534 | struct bfd_link_info *info; | |
2535 | struct elf_link_hash_entry *h; | |
2536 | Elf_Internal_Sym *sym; | |
2537 | { | |
2538 | bfd *dynobj; | |
2539 | ||
2540 | dynobj = elf_hash_table (info)->dynobj; | |
2541 | ||
2542 | if (h->plt.offset != (bfd_vma) -1) | |
2543 | { | |
2544 | asection *splt; | |
2545 | asection *srela; | |
2546 | Elf_Internal_Rela rela; | |
2547 | ||
2548 | /* This symbol has an entry in the PLT. Set it up. */ | |
2549 | ||
2550 | BFD_ASSERT (h->dynindx != -1); | |
2551 | ||
2552 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2553 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2554 | BFD_ASSERT (splt != NULL && srela != NULL); | |
2555 | ||
2556 | /* Fill in the entry in the .rela.plt section. */ | |
2557 | ||
2558 | if (h->plt.offset < LARGE_PLT_THRESHOLD) | |
2559 | { | |
2560 | rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset); | |
2561 | rela.r_addend = 0; | |
2562 | } | |
2563 | else | |
2564 | { | |
2565 | int max = splt->_raw_size / PLT_ENTRY_SIZE; | |
2566 | rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max); | |
a11c78e7 RH |
2567 | rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4) |
2568 | -(splt->output_section->vma + splt->output_offset); | |
252b5132 RH |
2569 | } |
2570 | rela.r_offset += (splt->output_section->vma + splt->output_offset); | |
2571 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); | |
2572 | ||
2573 | bfd_elf64_swap_reloca_out (output_bfd, &rela, | |
2574 | ((Elf64_External_Rela *) srela->contents | |
2575 | + h->plt.offset)); | |
2576 | ||
2577 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2578 | { | |
2579 | /* Mark the symbol as undefined, rather than as defined in | |
2580 | the .plt section. Leave the value alone. */ | |
2581 | sym->st_shndx = SHN_UNDEF; | |
2582 | } | |
2583 | } | |
2584 | ||
2585 | if (h->got.offset != (bfd_vma) -1) | |
2586 | { | |
2587 | asection *sgot; | |
2588 | asection *srela; | |
2589 | Elf_Internal_Rela rela; | |
2590 | ||
2591 | /* This symbol has an entry in the GOT. Set it up. */ | |
2592 | ||
2593 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2594 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2595 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2596 | ||
2597 | rela.r_offset = (sgot->output_section->vma | |
2598 | + sgot->output_offset | |
2599 | + (h->got.offset &~ 1)); | |
2600 | ||
2601 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2602 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
2603 | the symbol was forced to be local because of a version file. | |
2604 | The entry in the global offset table will already have been | |
2605 | initialized in the relocate_section function. */ | |
2606 | if (info->shared | |
2607 | && (info->symbolic || h->dynindx == -1) | |
2608 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
2609 | { | |
2610 | asection *sec = h->root.u.def.section; | |
2611 | rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); | |
2612 | rela.r_addend = (h->root.u.def.value | |
2613 | + sec->output_section->vma | |
2614 | + sec->output_offset); | |
2615 | } | |
2616 | else | |
2617 | { | |
2618 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
2619 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); | |
2620 | rela.r_addend = 0; | |
2621 | } | |
2622 | ||
2623 | bfd_elf64_swap_reloca_out (output_bfd, &rela, | |
2624 | ((Elf64_External_Rela *) srela->contents | |
2625 | + srela->reloc_count)); | |
2626 | ++srela->reloc_count; | |
2627 | } | |
2628 | ||
2629 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
2630 | { | |
2631 | asection *s; | |
2632 | Elf_Internal_Rela rela; | |
2633 | ||
2634 | /* This symbols needs a copy reloc. Set it up. */ | |
2635 | ||
2636 | BFD_ASSERT (h->dynindx != -1); | |
2637 | ||
2638 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2639 | ".rela.bss"); | |
2640 | BFD_ASSERT (s != NULL); | |
2641 | ||
2642 | rela.r_offset = (h->root.u.def.value | |
2643 | + h->root.u.def.section->output_section->vma | |
2644 | + h->root.u.def.section->output_offset); | |
2645 | rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY); | |
2646 | rela.r_addend = 0; | |
2647 | bfd_elf64_swap_reloca_out (output_bfd, &rela, | |
2648 | ((Elf64_External_Rela *) s->contents | |
2649 | + s->reloc_count)); | |
2650 | ++s->reloc_count; | |
2651 | } | |
2652 | ||
2653 | /* Mark some specially defined symbols as absolute. */ | |
2654 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2655 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
2656 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
2657 | sym->st_shndx = SHN_ABS; | |
2658 | ||
2659 | return true; | |
2660 | } | |
2661 | ||
2662 | /* Finish up the dynamic sections. */ | |
2663 | ||
2664 | static boolean | |
2665 | sparc64_elf_finish_dynamic_sections (output_bfd, info) | |
2666 | bfd *output_bfd; | |
2667 | struct bfd_link_info *info; | |
2668 | { | |
2669 | bfd *dynobj; | |
587ff49e | 2670 | int stt_regidx = -1; |
252b5132 RH |
2671 | asection *sdyn; |
2672 | asection *sgot; | |
2673 | ||
2674 | dynobj = elf_hash_table (info)->dynobj; | |
2675 | ||
2676 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2677 | ||
2678 | if (elf_hash_table (info)->dynamic_sections_created) | |
2679 | { | |
2680 | asection *splt; | |
2681 | Elf64_External_Dyn *dyncon, *dynconend; | |
2682 | ||
2683 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2684 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2685 | ||
2686 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
2687 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2688 | for (; dyncon < dynconend; dyncon++) | |
2689 | { | |
2690 | Elf_Internal_Dyn dyn; | |
2691 | const char *name; | |
2692 | boolean size; | |
2693 | ||
2694 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2695 | ||
2696 | switch (dyn.d_tag) | |
2697 | { | |
2698 | case DT_PLTGOT: name = ".plt"; size = false; break; | |
2699 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
2700 | case DT_JMPREL: name = ".rela.plt"; size = false; break; | |
587ff49e RH |
2701 | case DT_SPARC_REGISTER: |
2702 | if (stt_regidx == -1) | |
2703 | { | |
2704 | stt_regidx = | |
2705 | _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); | |
2706 | if (stt_regidx == -1) | |
2707 | return false; | |
2708 | } | |
2709 | dyn.d_un.d_val = stt_regidx++; | |
2710 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2711 | /* fallthrough */ | |
252b5132 RH |
2712 | default: name = NULL; size = false; break; |
2713 | } | |
2714 | ||
2715 | if (name != NULL) | |
2716 | { | |
2717 | asection *s; | |
2718 | ||
2719 | s = bfd_get_section_by_name (output_bfd, name); | |
2720 | if (s == NULL) | |
2721 | dyn.d_un.d_val = 0; | |
2722 | else | |
2723 | { | |
2724 | if (! size) | |
2725 | dyn.d_un.d_ptr = s->vma; | |
2726 | else | |
2727 | { | |
2728 | if (s->_cooked_size != 0) | |
2729 | dyn.d_un.d_val = s->_cooked_size; | |
2730 | else | |
2731 | dyn.d_un.d_val = s->_raw_size; | |
2732 | } | |
2733 | } | |
2734 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2735 | } | |
2736 | } | |
2737 | ||
2738 | /* Initialize the contents of the .plt section. */ | |
2739 | if (splt->_raw_size > 0) | |
2740 | { | |
2741 | sparc64_elf_build_plt(output_bfd, splt->contents, | |
2742 | splt->_raw_size / PLT_ENTRY_SIZE); | |
2743 | } | |
2744 | ||
2745 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
2746 | PLT_ENTRY_SIZE; | |
2747 | } | |
2748 | ||
2749 | /* Set the first entry in the global offset table to the address of | |
2750 | the dynamic section. */ | |
2751 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2752 | BFD_ASSERT (sgot != NULL); | |
2753 | if (sgot->_raw_size > 0) | |
2754 | { | |
2755 | if (sdyn == NULL) | |
2756 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2757 | else | |
2758 | bfd_put_64 (output_bfd, | |
2759 | sdyn->output_section->vma + sdyn->output_offset, | |
2760 | sgot->contents); | |
2761 | } | |
2762 | ||
2763 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; | |
2764 | ||
252b5132 RH |
2765 | return true; |
2766 | } | |
2767 | \f | |
2768 | /* Functions for dealing with the e_flags field. */ | |
2769 | ||
2770 | /* Merge backend specific data from an object file to the output | |
2771 | object file when linking. */ | |
2772 | ||
2773 | static boolean | |
2774 | sparc64_elf_merge_private_bfd_data (ibfd, obfd) | |
2775 | bfd *ibfd; | |
2776 | bfd *obfd; | |
2777 | { | |
2778 | boolean error; | |
2779 | flagword new_flags, old_flags; | |
2780 | int new_mm, old_mm; | |
2781 | ||
2782 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2783 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2784 | return true; | |
2785 | ||
2786 | new_flags = elf_elfheader (ibfd)->e_flags; | |
2787 | old_flags = elf_elfheader (obfd)->e_flags; | |
2788 | ||
2789 | if (!elf_flags_init (obfd)) /* First call, no flags set */ | |
2790 | { | |
2791 | elf_flags_init (obfd) = true; | |
2792 | elf_elfheader (obfd)->e_flags = new_flags; | |
2793 | } | |
2794 | ||
2795 | else if (new_flags == old_flags) /* Compatible flags are ok */ | |
2796 | ; | |
2797 | ||
2798 | else /* Incompatible flags */ | |
2799 | { | |
2800 | error = false; | |
2801 | ||
2802 | old_flags |= (new_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)); | |
2803 | new_flags |= (old_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)); | |
2804 | if ((old_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)) == | |
2805 | (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)) | |
2806 | { | |
2807 | error = true; | |
2808 | (*_bfd_error_handler) | |
2809 | (_("%s: linking UltraSPARC specific with HAL specific code"), | |
2810 | bfd_get_filename (ibfd)); | |
2811 | } | |
2812 | ||
2813 | /* Choose the most restrictive memory ordering */ | |
2814 | old_mm = (old_flags & EF_SPARCV9_MM); | |
2815 | new_mm = (new_flags & EF_SPARCV9_MM); | |
2816 | old_flags &= ~EF_SPARCV9_MM; | |
2817 | new_flags &= ~EF_SPARCV9_MM; | |
2818 | if (new_mm < old_mm) old_mm = new_mm; | |
2819 | old_flags |= old_mm; | |
2820 | new_flags |= old_mm; | |
2821 | ||
2822 | /* Warn about any other mismatches */ | |
2823 | if (new_flags != old_flags) | |
2824 | { | |
2825 | error = true; | |
2826 | (*_bfd_error_handler) | |
2827 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
2828 | bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); | |
2829 | } | |
2830 | ||
2831 | elf_elfheader (obfd)->e_flags = old_flags; | |
2832 | ||
2833 | if (error) | |
2834 | { | |
2835 | bfd_set_error (bfd_error_bad_value); | |
2836 | return false; | |
2837 | } | |
2838 | } | |
2839 | return true; | |
2840 | } | |
587ff49e RH |
2841 | \f |
2842 | /* Print a STT_REGISTER symbol to file FILE. */ | |
252b5132 | 2843 | |
587ff49e RH |
2844 | static const char * |
2845 | sparc64_elf_print_symbol_all (abfd, filep, symbol) | |
2846 | bfd *abfd; | |
2847 | PTR filep; | |
2848 | asymbol *symbol; | |
2849 | { | |
2850 | FILE *file = (FILE *) filep; | |
2851 | int reg, type; | |
2852 | ||
2853 | if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info) | |
2854 | != STT_REGISTER) | |
2855 | return NULL; | |
2856 | ||
2857 | reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
2858 | type = symbol->flags; | |
2859 | fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "", | |
2860 | ((type & BSF_LOCAL) | |
2861 | ? (type & BSF_GLOBAL) ? '!' : 'l' | |
2862 | : (type & BSF_GLOBAL) ? 'g' : ' '), | |
2863 | (type & BSF_WEAK) ? 'w' : ' '); | |
2864 | if (symbol->name == NULL || symbol->name [0] == '\0') | |
2865 | return "#scratch"; | |
2866 | else | |
2867 | return symbol->name; | |
2868 | } | |
252b5132 RH |
2869 | \f |
2870 | /* Set the right machine number for a SPARC64 ELF file. */ | |
2871 | ||
2872 | static boolean | |
2873 | sparc64_elf_object_p (abfd) | |
2874 | bfd *abfd; | |
2875 | { | |
2876 | unsigned long mach = bfd_mach_sparc_v9; | |
2877 | ||
2878 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) | |
2879 | mach = bfd_mach_sparc_v9a; | |
2880 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); | |
2881 | } | |
2882 | ||
f65054f7 RH |
2883 | /* Relocations in the 64 bit SPARC ELF ABI are more complex than in |
2884 | standard ELF, because R_SPARC_OLO10 has secondary addend in | |
2885 | ELF64_R_TYPE_DATA field. This structure is used to redirect the | |
2886 | relocation handling routines. */ | |
2887 | ||
2888 | const struct elf_size_info sparc64_elf_size_info = | |
2889 | { | |
2890 | sizeof (Elf64_External_Ehdr), | |
2891 | sizeof (Elf64_External_Phdr), | |
2892 | sizeof (Elf64_External_Shdr), | |
2893 | sizeof (Elf64_External_Rel), | |
2894 | sizeof (Elf64_External_Rela), | |
2895 | sizeof (Elf64_External_Sym), | |
2896 | sizeof (Elf64_External_Dyn), | |
2897 | sizeof (Elf_External_Note), | |
a11c78e7 | 2898 | 4, /* hash-table entry size */ |
f65054f7 RH |
2899 | /* internal relocations per external relocations. |
2900 | For link purposes we use just 1 internal per | |
2901 | 1 external, for assembly and slurp symbol table | |
2902 | we use 2. */ | |
2903 | 1, | |
2904 | 64, /* arch_size */ | |
2905 | 8, /* file_align */ | |
2906 | ELFCLASS64, | |
2907 | EV_CURRENT, | |
2908 | bfd_elf64_write_out_phdrs, | |
2909 | bfd_elf64_write_shdrs_and_ehdr, | |
2910 | sparc64_elf_write_relocs, | |
2911 | bfd_elf64_swap_symbol_out, | |
2912 | sparc64_elf_slurp_reloc_table, | |
2913 | bfd_elf64_slurp_symbol_table, | |
2914 | bfd_elf64_swap_dyn_in, | |
2915 | bfd_elf64_swap_dyn_out, | |
2916 | NULL, | |
2917 | NULL, | |
2918 | NULL, | |
2919 | NULL | |
2920 | }; | |
2921 | ||
252b5132 RH |
2922 | #define TARGET_BIG_SYM bfd_elf64_sparc_vec |
2923 | #define TARGET_BIG_NAME "elf64-sparc" | |
2924 | #define ELF_ARCH bfd_arch_sparc | |
2925 | #define ELF_MAXPAGESIZE 0x100000 | |
2926 | ||
2927 | /* This is the official ABI value. */ | |
2928 | #define ELF_MACHINE_CODE EM_SPARCV9 | |
2929 | ||
2930 | /* This is the value that we used before the ABI was released. */ | |
2931 | #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9 | |
2932 | ||
587ff49e RH |
2933 | #define bfd_elf64_bfd_link_hash_table_create \ |
2934 | sparc64_elf_bfd_link_hash_table_create | |
2935 | ||
252b5132 RH |
2936 | #define elf_info_to_howto \ |
2937 | sparc64_elf_info_to_howto | |
f65054f7 RH |
2938 | #define bfd_elf64_get_reloc_upper_bound \ |
2939 | sparc64_elf_get_reloc_upper_bound | |
2940 | #define bfd_elf64_get_dynamic_reloc_upper_bound \ | |
2941 | sparc64_elf_get_dynamic_reloc_upper_bound | |
2942 | #define bfd_elf64_canonicalize_dynamic_reloc \ | |
2943 | sparc64_elf_canonicalize_dynamic_reloc | |
252b5132 RH |
2944 | #define bfd_elf64_bfd_reloc_type_lookup \ |
2945 | sparc64_elf_reloc_type_lookup | |
2946 | ||
2947 | #define elf_backend_create_dynamic_sections \ | |
2948 | _bfd_elf_create_dynamic_sections | |
587ff49e RH |
2949 | #define elf_backend_add_symbol_hook \ |
2950 | sparc64_elf_add_symbol_hook | |
2951 | #define elf_backend_get_symbol_type \ | |
2952 | sparc64_elf_get_symbol_type | |
2953 | #define elf_backend_symbol_processing \ | |
2954 | sparc64_elf_symbol_processing | |
252b5132 RH |
2955 | #define elf_backend_check_relocs \ |
2956 | sparc64_elf_check_relocs | |
2957 | #define elf_backend_adjust_dynamic_symbol \ | |
2958 | sparc64_elf_adjust_dynamic_symbol | |
2959 | #define elf_backend_size_dynamic_sections \ | |
2960 | sparc64_elf_size_dynamic_sections | |
2961 | #define elf_backend_relocate_section \ | |
2962 | sparc64_elf_relocate_section | |
2963 | #define elf_backend_finish_dynamic_symbol \ | |
2964 | sparc64_elf_finish_dynamic_symbol | |
2965 | #define elf_backend_finish_dynamic_sections \ | |
2966 | sparc64_elf_finish_dynamic_sections | |
587ff49e RH |
2967 | #define elf_backend_print_symbol_all \ |
2968 | sparc64_elf_print_symbol_all | |
2969 | #define elf_backend_output_arch_syms \ | |
2970 | sparc64_elf_output_arch_syms | |
252b5132 RH |
2971 | |
2972 | #define bfd_elf64_bfd_merge_private_bfd_data \ | |
2973 | sparc64_elf_merge_private_bfd_data | |
2974 | ||
f65054f7 RH |
2975 | #define elf_backend_size_info \ |
2976 | sparc64_elf_size_info | |
252b5132 RH |
2977 | #define elf_backend_object_p \ |
2978 | sparc64_elf_object_p | |
2979 | ||
2980 | #define elf_backend_want_got_plt 0 | |
2981 | #define elf_backend_plt_readonly 0 | |
2982 | #define elf_backend_want_plt_sym 1 | |
2983 | ||
2984 | /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */ | |
2985 | #define elf_backend_plt_alignment 8 | |
2986 | ||
2987 | #define elf_backend_got_header_size 8 | |
2988 | #define elf_backend_plt_header_size PLT_HEADER_SIZE | |
2989 | ||
2990 | #include "elf64-target.h" |