1 /* SPARC-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "bfdlink.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "elf/sparc.h"
27 #include "opcode/sparc.h"
28
29 static reloc_howto_type *elf32_sparc_reloc_type_lookup
30 PARAMS ((bfd *, bfd_reloc_code_real_type));
31 static void elf32_sparc_info_to_howto
32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
33 static bfd_boolean elf32_sparc_check_relocs
34 PARAMS ((bfd *, struct bfd_link_info *, asection *,
35 const Elf_Internal_Rela *));
36 static bfd_boolean elf32_sparc_adjust_dynamic_symbol
37 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
38 static bfd_boolean allocate_dynrelocs
39 PARAMS ((struct elf_link_hash_entry *, PTR));
40 static bfd_boolean readonly_dynrelocs
41 PARAMS ((struct elf_link_hash_entry *, PTR));
42 static bfd_boolean elf32_sparc_size_dynamic_sections
43 PARAMS ((bfd *, struct bfd_link_info *));
44 static bfd_boolean elf32_sparc_new_section_hook
45 PARAMS ((bfd *, asection *));
46 static bfd_boolean elf32_sparc_relax_section
47 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
48 static bfd_vma dtpoff_base
49 PARAMS ((struct bfd_link_info *));
50 static bfd_vma tpoff
51 PARAMS ((struct bfd_link_info *, bfd_vma));
52 static bfd_boolean elf32_sparc_relocate_section
53 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
55 static bfd_boolean elf32_sparc_finish_dynamic_symbol
56 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
57 Elf_Internal_Sym *));
58 static bfd_boolean elf32_sparc_finish_dynamic_sections
59 PARAMS ((bfd *, struct bfd_link_info *));
60 static bfd_boolean elf32_sparc_merge_private_bfd_data
61 PARAMS ((bfd *, bfd *));
62 static struct bfd_hash_entry *link_hash_newfunc
63 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
64 static struct bfd_link_hash_table *elf32_sparc_link_hash_table_create
65 PARAMS ((bfd *));
66 static bfd_boolean create_got_section
67 PARAMS ((bfd *, struct bfd_link_info *));
68 static bfd_boolean elf32_sparc_create_dynamic_sections
69 PARAMS ((bfd *, struct bfd_link_info *));
70 static void elf32_sparc_copy_indirect_symbol
71 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
72 struct elf_link_hash_entry *));
73 static int elf32_sparc_tls_transition
74 PARAMS ((struct bfd_link_info *, bfd *, int, int));
75
76 static bfd_boolean elf32_sparc_mkobject
77 PARAMS ((bfd *));
78 static bfd_boolean elf32_sparc_object_p
79 PARAMS ((bfd *));
80 static void elf32_sparc_final_write_processing
81 PARAMS ((bfd *, bfd_boolean));
82 static enum elf_reloc_type_class elf32_sparc_reloc_type_class
83 PARAMS ((const Elf_Internal_Rela *));
84 static asection * elf32_sparc_gc_mark_hook
85 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
86 struct elf_link_hash_entry *, Elf_Internal_Sym *));
87 static bfd_boolean elf32_sparc_gc_sweep_hook
88 PARAMS ((bfd *, struct bfd_link_info *, asection *,
89 const Elf_Internal_Rela *));
90
91 /* The relocation "howto" table. */
92
93 static bfd_reloc_status_type sparc_elf_notsupported_reloc
94 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
95 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
96 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
97 static bfd_reloc_status_type sparc_elf_hix22_reloc
98 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
99 static bfd_reloc_status_type sparc_elf_lox10_reloc
100 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
101
102 reloc_howto_type _bfd_sparc_elf_howto_table[] =
103 {
104 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
105 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
106 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
107 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
108 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
109 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
110 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
111 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
112 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
113 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
114 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
115 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
116 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
117 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
118 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
119 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
120 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
121 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
122 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
123 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
124 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),
125 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),
126 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
127 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
128 HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
129 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
130 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
131 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
132 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
133 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
134 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
135 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
136 /* These are for sparc64 in a 64 bit environment.
137 Values need to be here because the table is indexed by reloc number. */
138 HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE),
139 HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE),
140 HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE),
141 HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE),
142 HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE),
143 HOWTO(R_SPARC_PC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HH22", FALSE,0,0x00000000,TRUE),
144 HOWTO(R_SPARC_PC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HM10", FALSE,0,0x00000000,TRUE),
145 HOWTO(R_SPARC_PC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_LM22", FALSE,0,0x00000000,TRUE),
146 /* End sparc64 in 64 bit environment values.
147 The following are for sparc64 in a 32 bit environment. */
148 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
149 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
150 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),
151 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
152 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
153 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
154 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
155 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
156 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
157 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
158 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
159 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
160 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
161 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
162 HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE),
163 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
164 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
165 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
166 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
167 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
168 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
169 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
170 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
171 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
172 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
173 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
174 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
175 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
176 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
177 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
178 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
179 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
180 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
181 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
182 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
183 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
184 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
185 HOWTO(R_SPARC_TLS_DTPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPOFF64",FALSE,0,0x00000000,TRUE),
186 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
187 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE)
188 };
189 static reloc_howto_type elf32_sparc_vtinherit_howto =
190 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
191 static reloc_howto_type elf32_sparc_vtentry_howto =
192 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
193 static reloc_howto_type elf32_sparc_rev32_howto =
194 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
195
196 struct elf_reloc_map {
197 bfd_reloc_code_real_type bfd_reloc_val;
198 unsigned char elf_reloc_val;
199 };
200
201 static const struct elf_reloc_map sparc_reloc_map[] =
202 {
203 { BFD_RELOC_NONE, R_SPARC_NONE, },
204 { BFD_RELOC_16, R_SPARC_16, },
205 { BFD_RELOC_16_PCREL, R_SPARC_DISP16 },
206 { BFD_RELOC_8, R_SPARC_8 },
207 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
208 { BFD_RELOC_CTOR, R_SPARC_32 },
209 { BFD_RELOC_32, R_SPARC_32 },
210 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
211 { BFD_RELOC_HI22, R_SPARC_HI22 },
212 { BFD_RELOC_LO10, R_SPARC_LO10, },
213 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
214 { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 },
215 { BFD_RELOC_SPARC22, R_SPARC_22 },
216 { BFD_RELOC_SPARC13, R_SPARC_13 },
217 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
218 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
219 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
220 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
221 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
222 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
223 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
224 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
225 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
226 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
227 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
228 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
229 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
230 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
231 { BFD_RELOC_SPARC_10, R_SPARC_10 },
232 { BFD_RELOC_SPARC_11, R_SPARC_11 },
233 { BFD_RELOC_SPARC_64, R_SPARC_64 },
234 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
235 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
236 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
237 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
238 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
239 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
240 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
241 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
242 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
243 { BFD_RELOC_SPARC_7, R_SPARC_7 },
244 { BFD_RELOC_SPARC_5, R_SPARC_5 },
245 { BFD_RELOC_SPARC_6, R_SPARC_6 },
246 { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 },
247 { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 },
248 { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD },
249 { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL },
250 { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 },
251 { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 },
252 { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD },
253 { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL },
254 { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 },
255 { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 },
256 { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD },
257 { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 },
258 { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 },
259 { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD },
260 { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX },
261 { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD },
262 { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 },
263 { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 },
264 { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 },
265 { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 },
266 { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 },
267 { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 },
268 { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 },
269 { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 },
270 { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT },
271 { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY },
272 { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }
273 };
274
275 static reloc_howto_type *
elf32_sparc_reloc_type_lookup(abfd,code)276 elf32_sparc_reloc_type_lookup (abfd, code)
277 bfd *abfd ATTRIBUTE_UNUSED;
278 bfd_reloc_code_real_type code;
279 {
280 unsigned int i;
281
282 switch (code)
283 {
284 case BFD_RELOC_VTABLE_INHERIT:
285 return &elf32_sparc_vtinherit_howto;
286
287 case BFD_RELOC_VTABLE_ENTRY:
288 return &elf32_sparc_vtentry_howto;
289
290 case BFD_RELOC_SPARC_REV32:
291 return &elf32_sparc_rev32_howto;
292
293 default:
294 for (i = 0;
295 i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map);
296 i++)
297 {
298 if (sparc_reloc_map[i].bfd_reloc_val == code)
299 return (_bfd_sparc_elf_howto_table
300 + (int) sparc_reloc_map[i].elf_reloc_val);
301 }
302 }
303 bfd_set_error (bfd_error_bad_value);
304 return NULL;
305 }
306
307 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
308 and elf64-sparc.c has its own copy. */
309
310 static void
elf32_sparc_info_to_howto(abfd,cache_ptr,dst)311 elf32_sparc_info_to_howto (abfd, cache_ptr, dst)
312 bfd *abfd ATTRIBUTE_UNUSED;
313 arelent *cache_ptr;
314 Elf_Internal_Rela *dst;
315 {
316 switch (ELF32_R_TYPE(dst->r_info))
317 {
318 case R_SPARC_GNU_VTINHERIT:
319 cache_ptr->howto = &elf32_sparc_vtinherit_howto;
320 break;
321
322 case R_SPARC_GNU_VTENTRY:
323 cache_ptr->howto = &elf32_sparc_vtentry_howto;
324 break;
325
326 case R_SPARC_REV32:
327 cache_ptr->howto = &elf32_sparc_rev32_howto;
328 break;
329
330 default:
331 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std);
332 cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
333 }
334 }
335
336 /* For unsupported relocs. */
337
338 static bfd_reloc_status_type
sparc_elf_notsupported_reloc(abfd,reloc_entry,symbol,data,input_section,output_bfd,error_message)339 sparc_elf_notsupported_reloc (abfd,
340 reloc_entry,
341 symbol,
342 data,
343 input_section,
344 output_bfd,
345 error_message)
346 bfd *abfd ATTRIBUTE_UNUSED;
347 arelent *reloc_entry ATTRIBUTE_UNUSED;
348 asymbol *symbol ATTRIBUTE_UNUSED;
349 PTR data ATTRIBUTE_UNUSED;
350 asection *input_section ATTRIBUTE_UNUSED;
351 bfd *output_bfd ATTRIBUTE_UNUSED;
352 char **error_message ATTRIBUTE_UNUSED;
353 {
354 return bfd_reloc_notsupported;
355 }
356
357 /* Handle the WDISP16 reloc. */
358
359 static bfd_reloc_status_type
sparc_elf_wdisp16_reloc(abfd,reloc_entry,symbol,data,input_section,output_bfd,error_message)360 sparc_elf_wdisp16_reloc (abfd,
361 reloc_entry,
362 symbol,
363 data,
364 input_section,
365 output_bfd,
366 error_message)
367 bfd *abfd;
368 arelent *reloc_entry;
369 asymbol *symbol;
370 PTR data;
371 asection *input_section;
372 bfd *output_bfd;
373 char **error_message ATTRIBUTE_UNUSED;
374 {
375 bfd_vma relocation;
376 bfd_vma x;
377
378 if (output_bfd != (bfd *) NULL
379 && (symbol->flags & BSF_SECTION_SYM) == 0
380 && (! reloc_entry->howto->partial_inplace
381 || reloc_entry->addend == 0))
382 {
383 reloc_entry->address += input_section->output_offset;
384 return bfd_reloc_ok;
385 }
386
387 if (output_bfd != NULL)
388 return bfd_reloc_continue;
389
390 if (reloc_entry->address > input_section->_cooked_size)
391 return bfd_reloc_outofrange;
392
393 relocation = (symbol->value
394 + symbol->section->output_section->vma
395 + symbol->section->output_offset);
396 relocation += reloc_entry->addend;
397 relocation -= (input_section->output_section->vma
398 + input_section->output_offset);
399 relocation -= reloc_entry->address;
400
401 x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
402 x |= ((((relocation >> 2) & 0xc000) << 6)
403 | ((relocation >> 2) & 0x3fff));
404 bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
405
406 if ((bfd_signed_vma) relocation < - 0x40000
407 || (bfd_signed_vma) relocation > 0x3ffff)
408 return bfd_reloc_overflow;
409 else
410 return bfd_reloc_ok;
411 }
412
413 /* Handle the HIX22 reloc. */
414
415 static bfd_reloc_status_type
sparc_elf_hix22_reloc(abfd,reloc_entry,symbol,data,input_section,output_bfd,error_message)416 sparc_elf_hix22_reloc (abfd,
417 reloc_entry,
418 symbol,
419 data,
420 input_section,
421 output_bfd,
422 error_message)
423 bfd *abfd;
424 arelent *reloc_entry;
425 asymbol *symbol;
426 PTR data;
427 asection *input_section;
428 bfd *output_bfd;
429 char **error_message ATTRIBUTE_UNUSED;
430 {
431 bfd_vma relocation;
432 bfd_vma insn;
433
434 if (output_bfd != (bfd *) NULL
435 && (symbol->flags & BSF_SECTION_SYM) == 0)
436 {
437 reloc_entry->address += input_section->output_offset;
438 return bfd_reloc_ok;
439 }
440
441 if (output_bfd != NULL)
442 return bfd_reloc_continue;
443
444 if (reloc_entry->address > input_section->_cooked_size)
445 return bfd_reloc_outofrange;
446
447 relocation = (symbol->value
448 + symbol->section->output_section->vma
449 + symbol->section->output_offset);
450 relocation += reloc_entry->addend;
451 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
452
453 insn = (insn &~ (bfd_vma) 0x3fffff) | (((~relocation) >> 10) & 0x3fffff);
454 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
455
456 return bfd_reloc_ok;
457 }
458
459 /* Handle the LOX10 reloc. */
460
461 static bfd_reloc_status_type
sparc_elf_lox10_reloc(abfd,reloc_entry,symbol,data,input_section,output_bfd,error_message)462 sparc_elf_lox10_reloc (abfd,
463 reloc_entry,
464 symbol,
465 data,
466 input_section,
467 output_bfd,
468 error_message)
469 bfd *abfd;
470 arelent *reloc_entry;
471 asymbol *symbol;
472 PTR data;
473 asection *input_section;
474 bfd *output_bfd;
475 char **error_message ATTRIBUTE_UNUSED;
476 {
477 bfd_vma relocation;
478 bfd_vma insn;
479
480 if (output_bfd != (bfd *) NULL
481 && (symbol->flags & BSF_SECTION_SYM) == 0)
482 {
483 reloc_entry->address += input_section->output_offset;
484 return bfd_reloc_ok;
485 }
486
487 if (output_bfd != NULL)
488 return bfd_reloc_continue;
489
490 if (reloc_entry->address > input_section->_cooked_size)
491 return bfd_reloc_outofrange;
492
493 relocation = (symbol->value
494 + symbol->section->output_section->vma
495 + symbol->section->output_offset);
496 relocation += reloc_entry->addend;
497 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
498
499 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
500 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
501
502 return bfd_reloc_ok;
503 }
504
505 /* Support for core dump NOTE sections. */
506
507 static bfd_boolean
elf32_sparc_grok_psinfo(bfd * abfd,Elf_Internal_Note * note)508 elf32_sparc_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
509 {
510 switch (note->descsz)
511 {
512 default:
513 return FALSE;
514
515 case 260: /* Solaris prpsinfo_t. */
516 elf_tdata (abfd)->core_program
517 = _bfd_elfcore_strndup (abfd, note->descdata + 84, 16);
518 elf_tdata (abfd)->core_command
519 = _bfd_elfcore_strndup (abfd, note->descdata + 100, 80);
520 break;
521
522 case 336: /* Solaris psinfo_t. */
523 elf_tdata (abfd)->core_program
524 = _bfd_elfcore_strndup (abfd, note->descdata + 88, 16);
525 elf_tdata (abfd)->core_command
526 = _bfd_elfcore_strndup (abfd, note->descdata + 104, 80);
527 break;
528 }
529
530 return TRUE;
531 }
532
533
534 /* Functions for the SPARC ELF linker. */
535
536 /* The name of the dynamic interpreter. This is put in the .interp
537 section. */
538
539 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
540
541 /* The nop opcode we use. */
542
543 #define SPARC_NOP 0x01000000
544
545 /* The size in bytes of an entry in the procedure linkage table. */
546
547 #define PLT_ENTRY_SIZE 12
548
549 /* The first four entries in a procedure linkage table are reserved,
550 and the initial contents are unimportant (we zero them out).
551 Subsequent entries look like this. See the SVR4 ABI SPARC
552 supplement to see how this works. */
553
554 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
555 #define PLT_ENTRY_WORD0 0x03000000
556 /* b,a .plt0. We fill in the offset later. */
557 #define PLT_ENTRY_WORD1 0x30800000
558 /* nop. */
559 #define PLT_ENTRY_WORD2 SPARC_NOP
560
561 /* The SPARC linker needs to keep track of the number of relocs that it
562 decides to copy as dynamic relocs in check_relocs for each symbol.
563 This is so that it can later discard them if they are found to be
564 unnecessary. We store the information in a field extending the
565 regular ELF linker hash table. */
566
567 struct elf32_sparc_dyn_relocs
568 {
569 struct elf32_sparc_dyn_relocs *next;
570
571 /* The input section of the reloc. */
572 asection *sec;
573
574 /* Total number of relocs copied for the input section. */
575 bfd_size_type count;
576
577 /* Number of pc-relative relocs copied for the input section. */
578 bfd_size_type pc_count;
579 };
580
581 /* SPARC ELF linker hash entry. */
582
583 struct elf32_sparc_link_hash_entry
584 {
585 struct elf_link_hash_entry elf;
586
587 /* Track dynamic relocs copied for this symbol. */
588 struct elf32_sparc_dyn_relocs *dyn_relocs;
589
590 #define GOT_UNKNOWN 0
591 #define GOT_NORMAL 1
592 #define GOT_TLS_GD 2
593 #define GOT_TLS_IE 3
594 unsigned char tls_type;
595 };
596
597 #define elf32_sparc_hash_entry(ent) ((struct elf32_sparc_link_hash_entry *)(ent))
598
599 struct elf32_sparc_obj_tdata
600 {
601 struct elf_obj_tdata root;
602
603 /* tls_type for each local got entry. */
604 char *local_got_tls_type;
605
606 /* TRUE if TLS GD relocs has been seen for this object. */
607 bfd_boolean has_tlsgd;
608 };
609
610 #define elf32_sparc_tdata(abfd) \
611 ((struct elf32_sparc_obj_tdata *) (abfd)->tdata.any)
612
613 #define elf32_sparc_local_got_tls_type(abfd) \
614 (elf32_sparc_tdata (abfd)->local_got_tls_type)
615
616 static bfd_boolean
elf32_sparc_mkobject(abfd)617 elf32_sparc_mkobject (abfd)
618 bfd *abfd;
619 {
620 bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
621 abfd->tdata.any = bfd_zalloc (abfd, amt);
622 if (abfd->tdata.any == NULL)
623 return FALSE;
624 return TRUE;
625 }
626
627 /* SPARC ELF linker hash table. */
628
629 struct elf32_sparc_link_hash_table
630 {
631 struct elf_link_hash_table elf;
632
633 /* Short-cuts to get to dynamic linker sections. */
634 asection *sgot;
635 asection *srelgot;
636 asection *splt;
637 asection *srelplt;
638 asection *sdynbss;
639 asection *srelbss;
640
641 union {
642 bfd_signed_vma refcount;
643 bfd_vma offset;
644 } tls_ldm_got;
645
646 /* Small local sym to section mapping cache. */
647 struct sym_sec_cache sym_sec;
648 };
649
650 /* Get the SPARC ELF linker hash table from a link_info structure. */
651
652 #define elf32_sparc_hash_table(p) \
653 ((struct elf32_sparc_link_hash_table *) ((p)->hash))
654
655 /* Create an entry in an i386 ELF linker hash table. */
656
657 static struct bfd_hash_entry *
link_hash_newfunc(entry,table,string)658 link_hash_newfunc (entry, table, string)
659 struct bfd_hash_entry *entry;
660 struct bfd_hash_table *table;
661 const char *string;
662 {
663 /* Allocate the structure if it has not already been allocated by a
664 subclass. */
665 if (entry == NULL)
666 {
667 entry = bfd_hash_allocate (table,
668 sizeof (struct elf32_sparc_link_hash_entry));
669 if (entry == NULL)
670 return entry;
671 }
672
673 /* Call the allocation method of the superclass. */
674 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
675 if (entry != NULL)
676 {
677 struct elf32_sparc_link_hash_entry *eh;
678
679 eh = (struct elf32_sparc_link_hash_entry *) entry;
680 eh->dyn_relocs = NULL;
681 eh->tls_type = GOT_UNKNOWN;
682 }
683
684 return entry;
685 }
686
687 /* Create a SPARC ELF linker hash table. */
688
689 static struct bfd_link_hash_table *
elf32_sparc_link_hash_table_create(abfd)690 elf32_sparc_link_hash_table_create (abfd)
691 bfd *abfd;
692 {
693 struct elf32_sparc_link_hash_table *ret;
694 bfd_size_type amt = sizeof (struct elf32_sparc_link_hash_table);
695
696 ret = (struct elf32_sparc_link_hash_table *) bfd_malloc (amt);
697 if (ret == NULL)
698 return NULL;
699
700 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
701 {
702 free (ret);
703 return NULL;
704 }
705
706 ret->sgot = NULL;
707 ret->srelgot = NULL;
708 ret->splt = NULL;
709 ret->srelplt = NULL;
710 ret->sdynbss = NULL;
711 ret->srelbss = NULL;
712 ret->tls_ldm_got.refcount = 0;
713 ret->sym_sec.abfd = NULL;
714
715 return &ret->elf.root;
716 }
717
718 /* Create .got and .rela.got sections in DYNOBJ, and set up
719 shortcuts to them in our hash table. */
720
721 static bfd_boolean
create_got_section(dynobj,info)722 create_got_section (dynobj, info)
723 bfd *dynobj;
724 struct bfd_link_info *info;
725 {
726 struct elf32_sparc_link_hash_table *htab;
727
728 if (! _bfd_elf_create_got_section (dynobj, info))
729 return FALSE;
730
731 htab = elf32_sparc_hash_table (info);
732 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
733 if (!htab->sgot)
734 abort ();
735
736 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
737 if (htab->srelgot == NULL
738 || ! bfd_set_section_flags (dynobj, htab->srelgot,
739 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
740 | SEC_IN_MEMORY | SEC_LINKER_CREATED
741 | SEC_READONLY))
742 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
743 return FALSE;
744 return TRUE;
745 }
746
747 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
748 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
749 hash table. */
750
751 static bfd_boolean
elf32_sparc_create_dynamic_sections(dynobj,info)752 elf32_sparc_create_dynamic_sections (dynobj, info)
753 bfd *dynobj;
754 struct bfd_link_info *info;
755 {
756 struct elf32_sparc_link_hash_table *htab;
757
758 htab = elf32_sparc_hash_table (info);
759 if (!htab->sgot && !create_got_section (dynobj, info))
760 return FALSE;
761
762 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
763 return FALSE;
764
765 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
766 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
767 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
768 if (!info->shared)
769 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
770
771 if (!htab->splt || !htab->srelplt || !htab->sdynbss
772 || (!info->shared && !htab->srelbss))
773 abort ();
774
775 return TRUE;
776 }
777
778 /* Copy the extra info we tack onto an elf_link_hash_entry. */
779
780 static void
elf32_sparc_copy_indirect_symbol(bed,dir,ind)781 elf32_sparc_copy_indirect_symbol (bed, dir, ind)
782 const struct elf_backend_data *bed;
783 struct elf_link_hash_entry *dir, *ind;
784 {
785 struct elf32_sparc_link_hash_entry *edir, *eind;
786
787 edir = (struct elf32_sparc_link_hash_entry *) dir;
788 eind = (struct elf32_sparc_link_hash_entry *) ind;
789
790 if (eind->dyn_relocs != NULL)
791 {
792 if (edir->dyn_relocs != NULL)
793 {
794 struct elf32_sparc_dyn_relocs **pp;
795 struct elf32_sparc_dyn_relocs *p;
796
797 if (ind->root.type == bfd_link_hash_indirect)
798 abort ();
799
800 /* Add reloc counts against the weak sym to the strong sym
801 list. Merge any entries against the same section. */
802 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
803 {
804 struct elf32_sparc_dyn_relocs *q;
805
806 for (q = edir->dyn_relocs; q != NULL; q = q->next)
807 if (q->sec == p->sec)
808 {
809 q->pc_count += p->pc_count;
810 q->count += p->count;
811 *pp = p->next;
812 break;
813 }
814 if (q == NULL)
815 pp = &p->next;
816 }
817 *pp = edir->dyn_relocs;
818 }
819
820 edir->dyn_relocs = eind->dyn_relocs;
821 eind->dyn_relocs = NULL;
822 }
823
824 if (ind->root.type == bfd_link_hash_indirect
825 && dir->got.refcount <= 0)
826 {
827 edir->tls_type = eind->tls_type;
828 eind->tls_type = GOT_UNKNOWN;
829 }
830 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
831 }
832
833 static int
elf32_sparc_tls_transition(info,abfd,r_type,is_local)834 elf32_sparc_tls_transition (info, abfd, r_type, is_local)
835 struct bfd_link_info *info;
836 bfd *abfd;
837 int r_type;
838 int is_local;
839 {
840 if (r_type == R_SPARC_TLS_GD_HI22
841 && ! elf32_sparc_tdata (abfd)->has_tlsgd)
842 r_type = R_SPARC_REV32;
843
844 if (info->shared)
845 return r_type;
846
847 switch (r_type)
848 {
849 case R_SPARC_TLS_GD_HI22:
850 if (is_local)
851 return R_SPARC_TLS_LE_HIX22;
852 return R_SPARC_TLS_IE_HI22;
853 case R_SPARC_TLS_GD_LO10:
854 if (is_local)
855 return R_SPARC_TLS_LE_LOX10;
856 return R_SPARC_TLS_IE_LO10;
857 case R_SPARC_TLS_IE_HI22:
858 if (is_local)
859 return R_SPARC_TLS_LE_HIX22;
860 return r_type;
861 case R_SPARC_TLS_IE_LO10:
862 if (is_local)
863 return R_SPARC_TLS_LE_LOX10;
864 return r_type;
865 case R_SPARC_TLS_LDM_HI22:
866 return R_SPARC_TLS_LE_HIX22;
867 case R_SPARC_TLS_LDM_LO10:
868 return R_SPARC_TLS_LE_LOX10;
869 }
870
871 return r_type;
872 }
873
874 /* Look through the relocs for a section during the first phase, and
875 allocate space in the global offset table or procedure linkage
876 table. */
877
878 static bfd_boolean
elf32_sparc_check_relocs(abfd,info,sec,relocs)879 elf32_sparc_check_relocs (abfd, info, sec, relocs)
880 bfd *abfd;
881 struct bfd_link_info *info;
882 asection *sec;
883 const Elf_Internal_Rela *relocs;
884 {
885 struct elf32_sparc_link_hash_table *htab;
886 Elf_Internal_Shdr *symtab_hdr;
887 struct elf_link_hash_entry **sym_hashes;
888 bfd_vma *local_got_offsets;
889 const Elf_Internal_Rela *rel;
890 const Elf_Internal_Rela *rel_end;
891 asection *sreloc;
892 bfd_boolean checked_tlsgd = FALSE;
893
894 if (info->relocatable)
895 return TRUE;
896
897 htab = elf32_sparc_hash_table (info);
898 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
899 sym_hashes = elf_sym_hashes (abfd);
900 local_got_offsets = elf_local_got_offsets (abfd);
901
902 sreloc = NULL;
903
904 rel_end = relocs + sec->reloc_count;
905 for (rel = relocs; rel < rel_end; rel++)
906 {
907 unsigned int r_type;
908 unsigned long r_symndx;
909 struct elf_link_hash_entry *h;
910
911 r_symndx = ELF32_R_SYM (rel->r_info);
912 r_type = ELF32_R_TYPE (rel->r_info);
913
914 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
915 {
916 (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
917 bfd_archive_filename (abfd),
918 r_symndx);
919 return FALSE;
920 }
921
922 if (r_symndx < symtab_hdr->sh_info)
923 h = NULL;
924 else
925 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
926
927 /* Compatibility with old R_SPARC_REV32 reloc conflicting
928 with R_SPARC_TLS_GD_HI22. */
929 if (! checked_tlsgd)
930 switch (r_type)
931 {
932 case R_SPARC_TLS_GD_HI22:
933 {
934 const Elf_Internal_Rela *relt;
935
936 for (relt = rel + 1; relt < rel_end; relt++)
937 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
938 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
939 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
940 break;
941 checked_tlsgd = TRUE;
942 elf32_sparc_tdata (abfd)->has_tlsgd = relt < rel_end;
943 }
944 break;
945 case R_SPARC_TLS_GD_LO10:
946 case R_SPARC_TLS_GD_ADD:
947 case R_SPARC_TLS_GD_CALL:
948 checked_tlsgd = TRUE;
949 elf32_sparc_tdata (abfd)->has_tlsgd = TRUE;
950 break;
951 }
952
953 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h == NULL);
954 switch (r_type)
955 {
956 case R_SPARC_TLS_LDM_HI22:
957 case R_SPARC_TLS_LDM_LO10:
958 htab->tls_ldm_got.refcount += 1;
959 break;
960
961 case R_SPARC_TLS_LE_HIX22:
962 case R_SPARC_TLS_LE_LOX10:
963 if (info->shared)
964 goto r_sparc_plt32;
965 break;
966
967 case R_SPARC_TLS_IE_HI22:
968 case R_SPARC_TLS_IE_LO10:
969 if (info->shared)
970 info->flags |= DF_STATIC_TLS;
971 /* Fall through */
972
973 case R_SPARC_GOT10:
974 case R_SPARC_GOT13:
975 case R_SPARC_GOT22:
976 case R_SPARC_TLS_GD_HI22:
977 case R_SPARC_TLS_GD_LO10:
978 /* This symbol requires a global offset table entry. */
979 {
980 int tls_type, old_tls_type;
981
982 switch (r_type)
983 {
984 default:
985 case R_SPARC_GOT10:
986 case R_SPARC_GOT13:
987 case R_SPARC_GOT22:
988 tls_type = GOT_NORMAL;
989 break;
990 case R_SPARC_TLS_GD_HI22:
991 case R_SPARC_TLS_GD_LO10:
992 tls_type = GOT_TLS_GD;
993 break;
994 case R_SPARC_TLS_IE_HI22:
995 case R_SPARC_TLS_IE_LO10:
996 tls_type = GOT_TLS_IE;
997 break;
998 }
999
1000 if (h != NULL)
1001 {
1002 h->got.refcount += 1;
1003 old_tls_type = elf32_sparc_hash_entry(h)->tls_type;
1004 }
1005 else
1006 {
1007 bfd_signed_vma *local_got_refcounts;
1008
1009 /* This is a global offset table entry for a local symbol. */
1010 local_got_refcounts = elf_local_got_refcounts (abfd);
1011 if (local_got_refcounts == NULL)
1012 {
1013 bfd_size_type size;
1014
1015 size = symtab_hdr->sh_info;
1016 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1017 local_got_refcounts = ((bfd_signed_vma *)
1018 bfd_zalloc (abfd, size));
1019 if (local_got_refcounts == NULL)
1020 return FALSE;
1021 elf_local_got_refcounts (abfd) = local_got_refcounts;
1022 elf32_sparc_local_got_tls_type (abfd)
1023 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1024 }
1025 local_got_refcounts[r_symndx] += 1;
1026 old_tls_type = elf32_sparc_local_got_tls_type (abfd) [r_symndx];
1027 }
1028
1029 /* If a TLS symbol is accessed using IE at least once,
1030 there is no point to use dynamic model for it. */
1031 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1032 && (old_tls_type != GOT_TLS_GD
1033 || tls_type != GOT_TLS_IE))
1034 {
1035 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1036 tls_type = old_tls_type;
1037 else
1038 {
1039 (*_bfd_error_handler)
1040 (_("%s: `%s' accessed both as normal and thread local symbol"),
1041 bfd_archive_filename (abfd),
1042 h ? h->root.root.string : "<local>");
1043 return FALSE;
1044 }
1045 }
1046
1047 if (old_tls_type != tls_type)
1048 {
1049 if (h != NULL)
1050 elf32_sparc_hash_entry (h)->tls_type = tls_type;
1051 else
1052 elf32_sparc_local_got_tls_type (abfd) [r_symndx] = tls_type;
1053 }
1054 }
1055
1056 if (htab->sgot == NULL)
1057 {
1058 if (htab->elf.dynobj == NULL)
1059 htab->elf.dynobj = abfd;
1060 if (!create_got_section (htab->elf.dynobj, info))
1061 return FALSE;
1062 }
1063 break;
1064
1065 case R_SPARC_TLS_GD_CALL:
1066 case R_SPARC_TLS_LDM_CALL:
1067 if (info->shared)
1068 {
1069 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1070 __tls_get_addr. */
1071 struct bfd_link_hash_entry *bh = NULL;
1072 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1073 "__tls_get_addr", 0,
1074 bfd_und_section_ptr, 0,
1075 NULL, FALSE, FALSE,
1076 &bh))
1077 return FALSE;
1078 h = (struct elf_link_hash_entry *) bh;
1079 }
1080 else
1081 break;
1082 /* Fall through */
1083
1084 case R_SPARC_PLT32:
1085 case R_SPARC_WPLT30:
1086 /* This symbol requires a procedure linkage table entry. We
1087 actually build the entry in adjust_dynamic_symbol,
1088 because this might be a case of linking PIC code without
1089 linking in any dynamic objects, in which case we don't
1090 need to generate a procedure linkage table after all. */
1091
1092 if (h == NULL)
1093 {
1094 /* The Solaris native assembler will generate a WPLT30
1095 reloc for a local symbol if you assemble a call from
1096 one section to another when using -K pic. We treat
1097 it as WDISP30. */
1098 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1099 goto r_sparc_plt32;
1100 break;
1101 }
1102
1103 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1104
1105 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1106 goto r_sparc_plt32;
1107 h->plt.refcount += 1;
1108 break;
1109
1110 case R_SPARC_PC10:
1111 case R_SPARC_PC22:
1112 if (h != NULL)
1113 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1114
1115 if (h != NULL
1116 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1117 break;
1118 /* Fall through. */
1119
1120 case R_SPARC_DISP8:
1121 case R_SPARC_DISP16:
1122 case R_SPARC_DISP32:
1123 case R_SPARC_WDISP30:
1124 case R_SPARC_WDISP22:
1125 case R_SPARC_WDISP19:
1126 case R_SPARC_WDISP16:
1127 case R_SPARC_8:
1128 case R_SPARC_16:
1129 case R_SPARC_32:
1130 case R_SPARC_HI22:
1131 case R_SPARC_22:
1132 case R_SPARC_13:
1133 case R_SPARC_LO10:
1134 case R_SPARC_UA16:
1135 case R_SPARC_UA32:
1136 if (h != NULL)
1137 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1138
1139 r_sparc_plt32:
1140 if (h != NULL && !info->shared)
1141 {
1142 /* We may need a .plt entry if the function this reloc
1143 refers to is in a shared lib. */
1144 h->plt.refcount += 1;
1145 }
1146
1147 /* If we are creating a shared library, and this is a reloc
1148 against a global symbol, or a non PC relative reloc
1149 against a local symbol, then we need to copy the reloc
1150 into the shared library. However, if we are linking with
1151 -Bsymbolic, we do not need to copy a reloc against a
1152 global symbol which is defined in an object we are
1153 including in the link (i.e., DEF_REGULAR is set). At
1154 this point we have not seen all the input files, so it is
1155 possible that DEF_REGULAR is not set now but will be set
1156 later (it is never cleared). In case of a weak definition,
1157 DEF_REGULAR may be cleared later by a strong definition in
1158 a shared library. We account for that possibility below by
1159 storing information in the relocs_copied field of the hash
1160 table entry. A similar situation occurs when creating
1161 shared libraries and symbol visibility changes render the
1162 symbol local.
1163
1164 If on the other hand, we are creating an executable, we
1165 may need to keep relocations for symbols satisfied by a
1166 dynamic library if we manage to avoid copy relocs for the
1167 symbol. */
1168 if ((info->shared
1169 && (sec->flags & SEC_ALLOC) != 0
1170 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1171 || (h != NULL
1172 && (! info->symbolic
1173 || h->root.type == bfd_link_hash_defweak
1174 || (h->elf_link_hash_flags
1175 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1176 || (!info->shared
1177 && (sec->flags & SEC_ALLOC) != 0
1178 && h != NULL
1179 && (h->root.type == bfd_link_hash_defweak
1180 || (h->elf_link_hash_flags
1181 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1182 {
1183 struct elf32_sparc_dyn_relocs *p;
1184 struct elf32_sparc_dyn_relocs **head;
1185
1186 /* When creating a shared object, we must copy these
1187 relocs into the output file. We create a reloc
1188 section in dynobj and make room for the reloc. */
1189 if (sreloc == NULL)
1190 {
1191 const char *name;
1192 bfd *dynobj;
1193
1194 name = (bfd_elf_string_from_elf_section
1195 (abfd,
1196 elf_elfheader (abfd)->e_shstrndx,
1197 elf_section_data (sec)->rel_hdr.sh_name));
1198 if (name == NULL)
1199 return FALSE;
1200
1201 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1202 && strcmp (bfd_get_section_name (abfd, sec),
1203 name + 5) == 0);
1204
1205 if (htab->elf.dynobj == NULL)
1206 htab->elf.dynobj = abfd;
1207 dynobj = htab->elf.dynobj;
1208
1209 sreloc = bfd_get_section_by_name (dynobj, name);
1210 if (sreloc == NULL)
1211 {
1212 flagword flags;
1213
1214 sreloc = bfd_make_section (dynobj, name);
1215 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1216 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1217 if ((sec->flags & SEC_ALLOC) != 0)
1218 flags |= SEC_ALLOC | SEC_LOAD;
1219 if (sreloc == NULL
1220 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1221 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1222 return FALSE;
1223 }
1224 elf_section_data (sec)->sreloc = sreloc;
1225 }
1226
1227 /* If this is a global symbol, we count the number of
1228 relocations we need for this symbol. */
1229 if (h != NULL)
1230 head = &((struct elf32_sparc_link_hash_entry *) h)->dyn_relocs;
1231 else
1232 {
1233 /* Track dynamic relocs needed for local syms too.
1234 We really need local syms available to do this
1235 easily. Oh well. */
1236
1237 asection *s;
1238 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1239 sec, r_symndx);
1240 if (s == NULL)
1241 return FALSE;
1242
1243 head = ((struct elf32_sparc_dyn_relocs **)
1244 &elf_section_data (s)->local_dynrel);
1245 }
1246
1247 p = *head;
1248 if (p == NULL || p->sec != sec)
1249 {
1250 bfd_size_type amt = sizeof *p;
1251 p = ((struct elf32_sparc_dyn_relocs *)
1252 bfd_alloc (htab->elf.dynobj, amt));
1253 if (p == NULL)
1254 return FALSE;
1255 p->next = *head;
1256 *head = p;
1257 p->sec = sec;
1258 p->count = 0;
1259 p->pc_count = 0;
1260 }
1261
1262 p->count += 1;
1263 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1264 p->pc_count += 1;
1265 }
1266
1267 break;
1268
1269 case R_SPARC_GNU_VTINHERIT:
1270 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1271 return FALSE;
1272 break;
1273
1274 case R_SPARC_GNU_VTENTRY:
1275 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1276 return FALSE;
1277 break;
1278
1279 default:
1280 break;
1281 }
1282 }
1283
1284 return TRUE;
1285 }
1286
1287 static asection *
elf32_sparc_gc_mark_hook(sec,info,rel,h,sym)1288 elf32_sparc_gc_mark_hook (sec, info, rel, h, sym)
1289 asection *sec;
1290 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1291 Elf_Internal_Rela *rel;
1292 struct elf_link_hash_entry *h;
1293 Elf_Internal_Sym *sym;
1294 {
1295 if (h != NULL)
1296 {
1297 switch (ELF32_R_TYPE (rel->r_info))
1298 {
1299 case R_SPARC_GNU_VTINHERIT:
1300 case R_SPARC_GNU_VTENTRY:
1301 break;
1302
1303 default:
1304 switch (h->root.type)
1305 {
1306 case bfd_link_hash_defined:
1307 case bfd_link_hash_defweak:
1308 return h->root.u.def.section;
1309
1310 case bfd_link_hash_common:
1311 return h->root.u.c.p->section;
1312
1313 default:
1314 break;
1315 }
1316 }
1317 }
1318 else
1319 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1320
1321 return NULL;
1322 }
1323
1324 /* Update the got entry reference counts for the section being removed. */
1325 static bfd_boolean
elf32_sparc_gc_sweep_hook(abfd,info,sec,relocs)1326 elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs)
1327 bfd *abfd;
1328 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1329 asection *sec;
1330 const Elf_Internal_Rela *relocs;
1331 {
1332 Elf_Internal_Shdr *symtab_hdr;
1333 struct elf_link_hash_entry **sym_hashes;
1334 bfd_signed_vma *local_got_refcounts;
1335 const Elf_Internal_Rela *rel, *relend;
1336
1337 elf_section_data (sec)->local_dynrel = NULL;
1338
1339 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1340 sym_hashes = elf_sym_hashes (abfd);
1341 local_got_refcounts = elf_local_got_refcounts (abfd);
1342
1343 relend = relocs + sec->reloc_count;
1344 for (rel = relocs; rel < relend; rel++)
1345 {
1346 unsigned long r_symndx;
1347 unsigned int r_type;
1348 struct elf_link_hash_entry *h = NULL;
1349
1350 r_symndx = ELF32_R_SYM (rel->r_info);
1351 if (r_symndx >= symtab_hdr->sh_info)
1352 {
1353 struct elf32_sparc_link_hash_entry *eh;
1354 struct elf32_sparc_dyn_relocs **pp;
1355 struct elf32_sparc_dyn_relocs *p;
1356
1357 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1358 eh = (struct elf32_sparc_link_hash_entry *) h;
1359 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1360 if (p->sec == sec)
1361 {
1362 /* Everything must go for SEC. */
1363 *pp = p->next;
1364 break;
1365 }
1366 }
1367
1368 r_type = ELF32_R_TYPE (rel->r_info);
1369 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h != NULL);
1370 switch (r_type)
1371 {
1372 case R_SPARC_TLS_LDM_HI22:
1373 case R_SPARC_TLS_LDM_LO10:
1374 if (elf32_sparc_hash_table (info)->tls_ldm_got.refcount > 0)
1375 elf32_sparc_hash_table (info)->tls_ldm_got.refcount -= 1;
1376 break;
1377
1378 case R_SPARC_TLS_GD_HI22:
1379 case R_SPARC_TLS_GD_LO10:
1380 case R_SPARC_TLS_IE_HI22:
1381 case R_SPARC_TLS_IE_LO10:
1382 case R_SPARC_GOT10:
1383 case R_SPARC_GOT13:
1384 case R_SPARC_GOT22:
1385 if (h != NULL)
1386 {
1387 if (h->got.refcount > 0)
1388 h->got.refcount--;
1389 }
1390 else
1391 {
1392 if (local_got_refcounts[r_symndx] > 0)
1393 local_got_refcounts[r_symndx]--;
1394 }
1395 break;
1396
1397 case R_SPARC_PC10:
1398 case R_SPARC_PC22:
1399 if (h != NULL
1400 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1401 break;
1402 /* Fall through. */
1403
1404 case R_SPARC_DISP8:
1405 case R_SPARC_DISP16:
1406 case R_SPARC_DISP32:
1407 case R_SPARC_WDISP30:
1408 case R_SPARC_WDISP22:
1409 case R_SPARC_WDISP19:
1410 case R_SPARC_WDISP16:
1411 case R_SPARC_8:
1412 case R_SPARC_16:
1413 case R_SPARC_32:
1414 case R_SPARC_HI22:
1415 case R_SPARC_22:
1416 case R_SPARC_13:
1417 case R_SPARC_LO10:
1418 case R_SPARC_UA16:
1419 case R_SPARC_UA32:
1420 case R_SPARC_PLT32:
1421 if (info->shared)
1422 break;
1423 /* Fall through. */
1424
1425 case R_SPARC_WPLT30:
1426 if (h != NULL)
1427 {
1428 if (h->plt.refcount > 0)
1429 h->plt.refcount--;
1430 }
1431 break;
1432
1433 default:
1434 break;
1435 }
1436 }
1437
1438 return TRUE;
1439 }
1440
1441 /* Adjust a symbol defined by a dynamic object and referenced by a
1442 regular object. The current definition is in some section of the
1443 dynamic object, but we're not including those sections. We have to
1444 change the definition to something the rest of the link can
1445 understand. */
1446
1447 static bfd_boolean
elf32_sparc_adjust_dynamic_symbol(info,h)1448 elf32_sparc_adjust_dynamic_symbol (info, h)
1449 struct bfd_link_info *info;
1450 struct elf_link_hash_entry *h;
1451 {
1452 struct elf32_sparc_link_hash_table *htab;
1453 struct elf32_sparc_link_hash_entry * eh;
1454 struct elf32_sparc_dyn_relocs *p;
1455 asection *s;
1456 unsigned int power_of_two;
1457
1458 htab = elf32_sparc_hash_table (info);
1459
1460 /* Make sure we know what is going on here. */
1461 BFD_ASSERT (htab->elf.dynobj != NULL
1462 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1463 || h->weakdef != NULL
1464 || ((h->elf_link_hash_flags
1465 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1466 && (h->elf_link_hash_flags
1467 & ELF_LINK_HASH_REF_REGULAR) != 0
1468 && (h->elf_link_hash_flags
1469 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1470
1471 /* If this is a function, put it in the procedure linkage table. We
1472 will fill in the contents of the procedure linkage table later
1473 (although we could actually do it here). The STT_NOTYPE
1474 condition is a hack specifically for the Oracle libraries
1475 delivered for Solaris; for some inexplicable reason, they define
1476 some of their functions as STT_NOTYPE when they really should be
1477 STT_FUNC. */
1478 if (h->type == STT_FUNC
1479 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
1480 || (h->type == STT_NOTYPE
1481 && (h->root.type == bfd_link_hash_defined
1482 || h->root.type == bfd_link_hash_defweak)
1483 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1484 {
1485 if (h->plt.refcount <= 0
1486 || (! info->shared
1487 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1488 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
1489 && h->root.type != bfd_link_hash_undefweak
1490 && h->root.type != bfd_link_hash_undefined))
1491 {
1492 /* This case can occur if we saw a WPLT30 reloc in an input
1493 file, but the symbol was never referred to by a dynamic
1494 object, or if all references were garbage collected. In
1495 such a case, we don't actually need to build a procedure
1496 linkage table, and we can just do a WDISP30 reloc instead. */
1497 h->plt.offset = (bfd_vma) -1;
1498 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1499 }
1500
1501 return TRUE;
1502 }
1503 else
1504 h->plt.offset = (bfd_vma) -1;
1505
1506 /* If this is a weak symbol, and there is a real definition, the
1507 processor independent code will have arranged for us to see the
1508 real definition first, and we can just use the same value. */
1509 if (h->weakdef != NULL)
1510 {
1511 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1512 || h->weakdef->root.type == bfd_link_hash_defweak);
1513 h->root.u.def.section = h->weakdef->root.u.def.section;
1514 h->root.u.def.value = h->weakdef->root.u.def.value;
1515 return TRUE;
1516 }
1517
1518 /* This is a reference to a symbol defined by a dynamic object which
1519 is not a function. */
1520
1521 /* If we are creating a shared library, we must presume that the
1522 only references to the symbol are via the global offset table.
1523 For such cases we need not do anything here; the relocations will
1524 be handled correctly by relocate_section. */
1525 if (info->shared)
1526 return TRUE;
1527
1528 /* If there are no references to this symbol that do not use the
1529 GOT, we don't need to generate a copy reloc. */
1530 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1531 return TRUE;
1532
1533 eh = (struct elf32_sparc_link_hash_entry *) h;
1534 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1535 {
1536 s = p->sec->output_section;
1537 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1538 break;
1539 }
1540
1541 /* If we didn't find any dynamic relocs in read-only sections, then
1542 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1543 if (p == NULL)
1544 {
1545 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1546 return TRUE;
1547 }
1548
1549 /* We must allocate the symbol in our .dynbss section, which will
1550 become part of the .bss section of the executable. There will be
1551 an entry for this symbol in the .dynsym section. The dynamic
1552 object will contain position independent code, so all references
1553 from the dynamic object to this symbol will go through the global
1554 offset table. The dynamic linker will use the .dynsym entry to
1555 determine the address it must put in the global offset table, so
1556 both the dynamic object and the regular object will refer to the
1557 same memory location for the variable. */
1558
1559 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1560 to copy the initial value out of the dynamic object and into the
1561 runtime process image. We need to remember the offset into the
1562 .rel.bss section we are going to use. */
1563 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1564 {
1565 htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
1566 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1567 }
1568
1569 /* We need to figure out the alignment required for this symbol. I
1570 have no idea how ELF linkers handle this. */
1571 power_of_two = bfd_log2 (h->size);
1572 if (power_of_two > 3)
1573 power_of_two = 3;
1574
1575 /* Apply the required alignment. */
1576 s = htab->sdynbss;
1577 s->_raw_size = BFD_ALIGN (s->_raw_size,
1578 (bfd_size_type) (1 << power_of_two));
1579 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1580 {
1581 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1582 return FALSE;
1583 }
1584
1585 /* Define the symbol as being at this point in the section. */
1586 h->root.u.def.section = s;
1587 h->root.u.def.value = s->_raw_size;
1588
1589 /* Increment the section size to make room for the symbol. */
1590 s->_raw_size += h->size;
1591
1592 return TRUE;
1593 }
1594
1595 /* Allocate space in .plt, .got and associated reloc sections for
1596 dynamic relocs. */
1597
1598 static bfd_boolean
allocate_dynrelocs(h,inf)1599 allocate_dynrelocs (h, inf)
1600 struct elf_link_hash_entry *h;
1601 PTR inf;
1602 {
1603 struct bfd_link_info *info;
1604 struct elf32_sparc_link_hash_table *htab;
1605 struct elf32_sparc_link_hash_entry *eh;
1606 struct elf32_sparc_dyn_relocs *p;
1607
1608 if (h->root.type == bfd_link_hash_indirect)
1609 return TRUE;
1610
1611 if (h->root.type == bfd_link_hash_warning)
1612 /* When warning symbols are created, they **replace** the "real"
1613 entry in the hash table, thus we never get to see the real
1614 symbol in a hash traversal. So look at it now. */
1615 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1616
1617 info = (struct bfd_link_info *) inf;
1618 htab = elf32_sparc_hash_table (info);
1619
1620 if (htab->elf.dynamic_sections_created
1621 && h->plt.refcount > 0)
1622 {
1623 /* Make sure this symbol is output as a dynamic symbol.
1624 Undefined weak syms won't yet be marked as dynamic. */
1625 if (h->dynindx == -1
1626 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1627 {
1628 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1629 return FALSE;
1630 }
1631
1632 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1633 {
1634 asection *s = htab->splt;
1635
1636 /* The first four entries in .plt are reserved. */
1637 if (s->_raw_size == 0)
1638 s->_raw_size = 4 * PLT_ENTRY_SIZE;
1639
1640 /* The procedure linkage table has a maximum size. */
1641 if (s->_raw_size >= 0x400000)
1642 {
1643 bfd_set_error (bfd_error_bad_value);
1644 return FALSE;
1645 }
1646
1647 h->plt.offset = s->_raw_size;
1648
1649 /* If this symbol is not defined in a regular file, and we are
1650 not generating a shared library, then set the symbol to this
1651 location in the .plt. This is required to make function
1652 pointers compare as equal between the normal executable and
1653 the shared library. */
1654 if (! info->shared
1655 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1656 {
1657 h->root.u.def.section = s;
1658 h->root.u.def.value = h->plt.offset;
1659 }
1660
1661 /* Make room for this entry. */
1662 s->_raw_size += PLT_ENTRY_SIZE;
1663
1664 /* We also need to make an entry in the .rela.plt section. */
1665 htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
1666 }
1667 else
1668 {
1669 h->plt.offset = (bfd_vma) -1;
1670 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1671 }
1672 }
1673 else
1674 {
1675 h->plt.offset = (bfd_vma) -1;
1676 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1677 }
1678
1679 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
1680 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
1681 if (h->got.refcount > 0
1682 && !info->shared
1683 && h->dynindx == -1
1684 && elf32_sparc_hash_entry(h)->tls_type == GOT_TLS_IE)
1685 h->got.offset = (bfd_vma) -1;
1686 else if (h->got.refcount > 0)
1687 {
1688 asection *s;
1689 bfd_boolean dyn;
1690 int tls_type = elf32_sparc_hash_entry(h)->tls_type;
1691
1692 /* Make sure this symbol is output as a dynamic symbol.
1693 Undefined weak syms won't yet be marked as dynamic. */
1694 if (h->dynindx == -1
1695 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1696 {
1697 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1698 return FALSE;
1699 }
1700
1701 s = htab->sgot;
1702 h->got.offset = s->_raw_size;
1703 s->_raw_size += 4;
1704 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
1705 if (tls_type == GOT_TLS_GD)
1706 s->_raw_size += 4;
1707 dyn = htab->elf.dynamic_sections_created;
1708 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
1709 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
1710 global. */
1711 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1712 || tls_type == GOT_TLS_IE)
1713 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1714 else if (tls_type == GOT_TLS_GD)
1715 htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rela);
1716 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
1717 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1718 }
1719 else
1720 h->got.offset = (bfd_vma) -1;
1721
1722 eh = (struct elf32_sparc_link_hash_entry *) h;
1723 if (eh->dyn_relocs == NULL)
1724 return TRUE;
1725
1726 /* In the shared -Bsymbolic case, discard space allocated for
1727 dynamic pc-relative relocs against symbols which turn out to be
1728 defined in regular objects. For the normal shared case, discard
1729 space for pc-relative relocs that have become local due to symbol
1730 visibility changes. */
1731
1732 if (info->shared)
1733 {
1734 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1735 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
1736 || info->symbolic))
1737 {
1738 struct elf32_sparc_dyn_relocs **pp;
1739
1740 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1741 {
1742 p->count -= p->pc_count;
1743 p->pc_count = 0;
1744 if (p->count == 0)
1745 *pp = p->next;
1746 else
1747 pp = &p->next;
1748 }
1749 }
1750 }
1751 else
1752 {
1753 /* For the non-shared case, discard space for relocs against
1754 symbols which turn out to need copy relocs or are not
1755 dynamic. */
1756
1757 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1758 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1759 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1760 || (htab->elf.dynamic_sections_created
1761 && (h->root.type == bfd_link_hash_undefweak
1762 || h->root.type == bfd_link_hash_undefined))))
1763 {
1764 /* Make sure this symbol is output as a dynamic symbol.
1765 Undefined weak syms won't yet be marked as dynamic. */
1766 if (h->dynindx == -1
1767 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1768 {
1769 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1770 return FALSE;
1771 }
1772
1773 /* If that succeeded, we know we'll be keeping all the
1774 relocs. */
1775 if (h->dynindx != -1)
1776 goto keep;
1777 }
1778
1779 eh->dyn_relocs = NULL;
1780
1781 keep: ;
1782 }
1783
1784 /* Finally, allocate space. */
1785 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1786 {
1787 asection *sreloc = elf_section_data (p->sec)->sreloc;
1788 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
1789 }
1790
1791 return TRUE;
1792 }
1793
1794 /* Find any dynamic relocs that apply to read-only sections. */
1795
1796 static bfd_boolean
readonly_dynrelocs(h,inf)1797 readonly_dynrelocs (h, inf)
1798 struct elf_link_hash_entry *h;
1799 PTR inf;
1800 {
1801 struct elf32_sparc_link_hash_entry *eh;
1802 struct elf32_sparc_dyn_relocs *p;
1803
1804 if (h->root.type == bfd_link_hash_warning)
1805 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1806
1807 eh = (struct elf32_sparc_link_hash_entry *) h;
1808 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1809 {
1810 asection *s = p->sec->output_section;
1811
1812 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1813 {
1814 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1815
1816 info->flags |= DF_TEXTREL;
1817
1818 /* Not an error, just cut short the traversal. */
1819 return FALSE;
1820 }
1821 }
1822 return TRUE;
1823 }
1824
1825 /* Set the sizes of the dynamic sections. */
1826
1827 static bfd_boolean
elf32_sparc_size_dynamic_sections(output_bfd,info)1828 elf32_sparc_size_dynamic_sections (output_bfd, info)
1829 bfd *output_bfd ATTRIBUTE_UNUSED;
1830 struct bfd_link_info *info;
1831 {
1832 struct elf32_sparc_link_hash_table *htab;
1833 bfd *dynobj;
1834 asection *s;
1835 bfd *ibfd;
1836
1837 htab = elf32_sparc_hash_table (info);
1838 dynobj = htab->elf.dynobj;
1839 BFD_ASSERT (dynobj != NULL);
1840
1841 if (elf_hash_table (info)->dynamic_sections_created)
1842 {
1843 /* Set the contents of the .interp section to the interpreter. */
1844 if (info->executable)
1845 {
1846 s = bfd_get_section_by_name (dynobj, ".interp");
1847 BFD_ASSERT (s != NULL);
1848 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1849 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1850 }
1851 }
1852
1853 /* Set up .got offsets for local syms, and space for local dynamic
1854 relocs. */
1855 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1856 {
1857 bfd_signed_vma *local_got;
1858 bfd_signed_vma *end_local_got;
1859 char *local_tls_type;
1860 bfd_size_type locsymcount;
1861 Elf_Internal_Shdr *symtab_hdr;
1862 asection *srel;
1863
1864 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
1865 continue;
1866
1867 for (s = ibfd->sections; s != NULL; s = s->next)
1868 {
1869 struct elf32_sparc_dyn_relocs *p;
1870
1871 for (p = *((struct elf32_sparc_dyn_relocs **)
1872 &elf_section_data (s)->local_dynrel);
1873 p != NULL;
1874 p = p->next)
1875 {
1876 if (!bfd_is_abs_section (p->sec)
1877 && bfd_is_abs_section (p->sec->output_section))
1878 {
1879 /* Input section has been discarded, either because
1880 it is a copy of a linkonce section or due to
1881 linker script /DISCARD/, so we'll be discarding
1882 the relocs too. */
1883 }
1884 else if (p->count != 0)
1885 {
1886 srel = elf_section_data (p->sec)->sreloc;
1887 srel->_raw_size += p->count * sizeof (Elf32_External_Rela);
1888 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1889 info->flags |= DF_TEXTREL;
1890 }
1891 }
1892 }
1893
1894 local_got = elf_local_got_refcounts (ibfd);
1895 if (!local_got)
1896 continue;
1897
1898 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
1899 locsymcount = symtab_hdr->sh_info;
1900 end_local_got = local_got + locsymcount;
1901 local_tls_type = elf32_sparc_local_got_tls_type (ibfd);
1902 s = htab->sgot;
1903 srel = htab->srelgot;
1904 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
1905 {
1906 if (*local_got > 0)
1907 {
1908 *local_got = s->_raw_size;
1909 s->_raw_size += 4;
1910 if (*local_tls_type == GOT_TLS_GD)
1911 s->_raw_size += 4;
1912 if (info->shared
1913 || *local_tls_type == GOT_TLS_GD
1914 || *local_tls_type == GOT_TLS_IE)
1915 srel->_raw_size += sizeof (Elf32_External_Rela);
1916 }
1917 else
1918 *local_got = (bfd_vma) -1;
1919 }
1920 }
1921
1922 if (htab->tls_ldm_got.refcount > 0)
1923 {
1924 /* Allocate 2 got entries and 1 dynamic reloc for
1925 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
1926 htab->tls_ldm_got.offset = htab->sgot->_raw_size;
1927 htab->sgot->_raw_size += 8;
1928 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1929 }
1930 else
1931 htab->tls_ldm_got.offset = -1;
1932
1933 /* Allocate global sym .plt and .got entries, and space for global
1934 sym dynamic relocs. */
1935 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
1936
1937 if (elf_hash_table (info)->dynamic_sections_created)
1938 {
1939 /* Make space for the trailing nop in .plt. */
1940 if (htab->splt->_raw_size > 0)
1941 htab->splt->_raw_size += 4;
1942
1943 /* If the .got section is more than 0x1000 bytes, we add
1944 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1945 bit relocations have a greater chance of working. */
1946 if (htab->sgot->_raw_size >= 0x1000
1947 && elf_hash_table (info)->hgot->root.u.def.value == 0)
1948 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
1949 }
1950
1951 /* The check_relocs and adjust_dynamic_symbol entry points have
1952 determined the sizes of the various dynamic sections. Allocate
1953 memory for them. */
1954 for (s = dynobj->sections; s != NULL; s = s->next)
1955 {
1956 const char *name;
1957 bfd_boolean strip = FALSE;
1958
1959 if ((s->flags & SEC_LINKER_CREATED) == 0)
1960 continue;
1961
1962 /* It's OK to base decisions on the section name, because none
1963 of the dynobj section names depend upon the input files. */
1964 name = bfd_get_section_name (dynobj, s);
1965
1966 if (strncmp (name, ".rela", 5) == 0)
1967 {
1968 if (s->_raw_size == 0)
1969 {
1970 /* If we don't need this section, strip it from the
1971 output file. This is to handle .rela.bss and
1972 .rel.plt. We must create it in
1973 create_dynamic_sections, because it must be created
1974 before the linker maps input sections to output
1975 sections. The linker does that before
1976 adjust_dynamic_symbol is called, and it is that
1977 function which decides whether anything needs to go
1978 into these sections. */
1979 strip = TRUE;
1980 }
1981 else
1982 {
1983 /* We use the reloc_count field as a counter if we need
1984 to copy relocs into the output file. */
1985 s->reloc_count = 0;
1986 }
1987 }
1988 else if (s != htab->splt && s != htab->sgot)
1989 {
1990 /* It's not one of our sections, so don't allocate space. */
1991 continue;
1992 }
1993
1994 if (strip)
1995 {
1996 _bfd_strip_section_from_output (info, s);
1997 continue;
1998 }
1999
2000 /* Allocate memory for the section contents. */
2001 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
2002 Unused entries should be reclaimed before the section's contents
2003 are written out, but at the moment this does not happen. Thus in
2004 order to prevent writing out garbage, we initialise the section's
2005 contents to zero. */
2006 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2007 if (s->contents == NULL && s->_raw_size != 0)
2008 return FALSE;
2009 }
2010
2011 if (elf_hash_table (info)->dynamic_sections_created)
2012 {
2013 /* Add some entries to the .dynamic section. We fill in the
2014 values later, in elf32_sparc_finish_dynamic_sections, but we
2015 must add the entries now so that we get the correct size for
2016 the .dynamic section. The DT_DEBUG entry is filled in by the
2017 dynamic linker and used by the debugger. */
2018 #define add_dynamic_entry(TAG, VAL) \
2019 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2020
2021 if (info->executable)
2022 {
2023 if (!add_dynamic_entry (DT_DEBUG, 0))
2024 return FALSE;
2025 }
2026
2027 if (htab->srelplt->_raw_size != 0)
2028 {
2029 if (!add_dynamic_entry (DT_PLTGOT, 0)
2030 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2031 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2032 || !add_dynamic_entry (DT_JMPREL, 0))
2033 return FALSE;
2034 }
2035
2036 if (!add_dynamic_entry (DT_RELA, 0)
2037 || !add_dynamic_entry (DT_RELASZ, 0)
2038 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2039 return FALSE;
2040
2041 /* If any dynamic relocs apply to a read-only section,
2042 then we need a DT_TEXTREL entry. */
2043 if ((info->flags & DF_TEXTREL) == 0)
2044 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2045 (PTR) info);
2046
2047 if (info->flags & DF_TEXTREL)
2048 {
2049 if (!add_dynamic_entry (DT_TEXTREL, 0))
2050 return FALSE;
2051 }
2052 }
2053 #undef add_dynamic_entry
2054
2055 return TRUE;
2056 }
2057
2058 struct elf32_sparc_section_data
2059 {
2060 struct bfd_elf_section_data elf;
2061 unsigned int do_relax;
2062 };
2063
2064 #define sec_do_relax(sec) \
2065 ((struct elf32_sparc_section_data *) elf_section_data (sec))->do_relax
2066
2067 static bfd_boolean
elf32_sparc_new_section_hook(abfd,sec)2068 elf32_sparc_new_section_hook (abfd, sec)
2069 bfd *abfd;
2070 asection *sec;
2071 {
2072 struct elf32_sparc_section_data *sdata;
2073 bfd_size_type amt = sizeof (*sdata);
2074
2075 sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt);
2076 if (sdata == NULL)
2077 return FALSE;
2078 sec->used_by_bfd = (PTR) sdata;
2079
2080 return _bfd_elf_new_section_hook (abfd, sec);
2081 }
2082
2083 static bfd_boolean
elf32_sparc_relax_section(abfd,section,link_info,again)2084 elf32_sparc_relax_section (abfd, section, link_info, again)
2085 bfd *abfd ATTRIBUTE_UNUSED;
2086 asection *section ATTRIBUTE_UNUSED;
2087 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
2088 bfd_boolean *again;
2089 {
2090 *again = FALSE;
2091 sec_do_relax (section) = 1;
2092 return TRUE;
2093 }
2094
2095 /* Return the base VMA address which should be subtracted from real addresses
2096 when resolving @dtpoff relocation.
2097 This is PT_TLS segment p_vaddr. */
2098
2099 static bfd_vma
dtpoff_base(info)2100 dtpoff_base (info)
2101 struct bfd_link_info *info;
2102 {
2103 /* If tls_sec is NULL, we should have signalled an error already. */
2104 if (elf_hash_table (info)->tls_sec == NULL)
2105 return 0;
2106 return elf_hash_table (info)->tls_sec->vma;
2107 }
2108
2109 /* Return the relocation value for @tpoff relocation
2110 if STT_TLS virtual address is ADDRESS. */
2111
2112 static bfd_vma
tpoff(info,address)2113 tpoff (info, address)
2114 struct bfd_link_info *info;
2115 bfd_vma address;
2116 {
2117 struct elf_link_hash_table *htab = elf_hash_table (info);
2118
2119 /* If tls_sec is NULL, we should have signalled an error already. */
2120 if (htab->tls_sec == NULL)
2121 return 0;
2122 return address - htab->tls_size - htab->tls_sec->vma;
2123 }
2124
2125 /* Relocate a SPARC ELF section. */
2126
2127 static bfd_boolean
elf32_sparc_relocate_section(output_bfd,info,input_bfd,input_section,contents,relocs,local_syms,local_sections)2128 elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
2129 contents, relocs, local_syms, local_sections)
2130 bfd *output_bfd;
2131 struct bfd_link_info *info;
2132 bfd *input_bfd;
2133 asection *input_section;
2134 bfd_byte *contents;
2135 Elf_Internal_Rela *relocs;
2136 Elf_Internal_Sym *local_syms;
2137 asection **local_sections;
2138 {
2139 struct elf32_sparc_link_hash_table *htab;
2140 Elf_Internal_Shdr *symtab_hdr;
2141 struct elf_link_hash_entry **sym_hashes;
2142 bfd_vma *local_got_offsets;
2143 bfd_vma got_base;
2144 asection *sreloc;
2145 Elf_Internal_Rela *rel;
2146 Elf_Internal_Rela *relend;
2147
2148 if (info->relocatable)
2149 return TRUE;
2150
2151 htab = elf32_sparc_hash_table (info);
2152 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2153 sym_hashes = elf_sym_hashes (input_bfd);
2154 local_got_offsets = elf_local_got_offsets (input_bfd);
2155
2156 if (elf_hash_table (info)->hgot == NULL)
2157 got_base = 0;
2158 else
2159 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2160
2161 sreloc = elf_section_data (input_section)->sreloc;
2162
2163 rel = relocs;
2164 relend = relocs + input_section->reloc_count;
2165 for (; rel < relend; rel++)
2166 {
2167 int r_type, tls_type;
2168 reloc_howto_type *howto;
2169 unsigned long r_symndx;
2170 struct elf_link_hash_entry *h;
2171 Elf_Internal_Sym *sym;
2172 asection *sec;
2173 bfd_vma relocation, off;
2174 bfd_reloc_status_type r;
2175 bfd_boolean is_plt = FALSE;
2176 bfd_boolean unresolved_reloc;
2177
2178 r_type = ELF32_R_TYPE (rel->r_info);
2179
2180 if (r_type == R_SPARC_GNU_VTINHERIT
2181 || r_type == R_SPARC_GNU_VTENTRY)
2182 continue;
2183
2184 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2185 {
2186 bfd_set_error (bfd_error_bad_value);
2187 return FALSE;
2188 }
2189 howto = _bfd_sparc_elf_howto_table + r_type;
2190
2191 /* This is a final link. */
2192 r_symndx = ELF32_R_SYM (rel->r_info);
2193 h = NULL;
2194 sym = NULL;
2195 sec = NULL;
2196 unresolved_reloc = FALSE;
2197 if (r_symndx < symtab_hdr->sh_info)
2198 {
2199 sym = local_syms + r_symndx;
2200 sec = local_sections[r_symndx];
2201 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2202 }
2203 else
2204 {
2205 bfd_boolean warned ATTRIBUTE_UNUSED;
2206
2207 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2208 r_symndx, symtab_hdr, sym_hashes,
2209 h, sec, relocation,
2210 unresolved_reloc, warned);
2211 }
2212
2213 switch (r_type)
2214 {
2215 case R_SPARC_GOT10:
2216 case R_SPARC_GOT13:
2217 case R_SPARC_GOT22:
2218 /* Relocation is to the entry for this symbol in the global
2219 offset table. */
2220 if (htab->sgot == NULL)
2221 abort ();
2222
2223 if (h != NULL)
2224 {
2225 bfd_boolean dyn;
2226
2227 off = h->got.offset;
2228 BFD_ASSERT (off != (bfd_vma) -1);
2229 dyn = elf_hash_table (info)->dynamic_sections_created;
2230
2231 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2232 || (info->shared
2233 && (info->symbolic
2234 || h->dynindx == -1
2235 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
2236 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
2237 {
2238 /* This is actually a static link, or it is a
2239 -Bsymbolic link and the symbol is defined
2240 locally, or the symbol was forced to be local
2241 because of a version file. We must initialize
2242 this entry in the global offset table. Since the
2243 offset must always be a multiple of 4, we use the
2244 least significant bit to record whether we have
2245 initialized it already.
2246
2247 When doing a dynamic link, we create a .rela.got
2248 relocation entry to initialize the value. This
2249 is done in the finish_dynamic_symbol routine. */
2250 if ((off & 1) != 0)
2251 off &= ~1;
2252 else
2253 {
2254 bfd_put_32 (output_bfd, relocation,
2255 htab->sgot->contents + off);
2256 h->got.offset |= 1;
2257 }
2258 }
2259 else
2260 unresolved_reloc = FALSE;
2261 }
2262 else
2263 {
2264 BFD_ASSERT (local_got_offsets != NULL
2265 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2266
2267 off = local_got_offsets[r_symndx];
2268
2269 /* The offset must always be a multiple of 4. We use
2270 the least significant bit to record whether we have
2271 already processed this entry. */
2272 if ((off & 1) != 0)
2273 off &= ~1;
2274 else
2275 {
2276
2277 if (info->shared)
2278 {
2279 asection *s;
2280 Elf_Internal_Rela outrel;
2281 bfd_byte *loc;
2282
2283 /* We need to generate a R_SPARC_RELATIVE reloc
2284 for the dynamic linker. */
2285 s = htab->srelgot;
2286 BFD_ASSERT (s != NULL);
2287
2288 outrel.r_offset = (htab->sgot->output_section->vma
2289 + htab->sgot->output_offset
2290 + off);
2291 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2292 outrel.r_addend = relocation;
2293 relocation = 0;
2294 loc = s->contents;
2295 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
2296 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2297 }
2298
2299 bfd_put_32 (output_bfd, relocation,
2300 htab->sgot->contents + off);
2301 local_got_offsets[r_symndx] |= 1;
2302 }
2303 }
2304 relocation = htab->sgot->output_offset + off - got_base;
2305 break;
2306
2307 case R_SPARC_PLT32:
2308 if (h == NULL || h->plt.offset == (bfd_vma) -1)
2309 {
2310 r_type = R_SPARC_32;
2311 goto r_sparc_plt32;
2312 }
2313 /* Fall through. */
2314 case R_SPARC_WPLT30:
2315 r_sparc_wplt30:
2316 /* Relocation is to the entry for this symbol in the
2317 procedure linkage table. */
2318
2319 /* The Solaris native assembler will generate a WPLT30 reloc
2320 for a local symbol if you assemble a call from one
2321 section to another when using -K pic. We treat it as
2322 WDISP30. */
2323 if (h == NULL)
2324 break;
2325
2326 if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
2327 {
2328 /* We didn't make a PLT entry for this symbol. This
2329 happens when statically linking PIC code, or when
2330 using -Bsymbolic. */
2331 break;
2332 }
2333
2334 relocation = (htab->splt->output_section->vma
2335 + htab->splt->output_offset
2336 + h->plt.offset);
2337 unresolved_reloc = FALSE;
2338 if (r_type == R_SPARC_PLT32)
2339 {
2340 r_type = R_SPARC_32;
2341 is_plt = TRUE;
2342 goto r_sparc_plt32;
2343 }
2344 break;
2345
2346 case R_SPARC_PC10:
2347 case R_SPARC_PC22:
2348 if (h != NULL
2349 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2350 break;
2351 /* Fall through. */
2352 case R_SPARC_DISP8:
2353 case R_SPARC_DISP16:
2354 case R_SPARC_DISP32:
2355 case R_SPARC_WDISP30:
2356 case R_SPARC_WDISP22:
2357 case R_SPARC_WDISP19:
2358 case R_SPARC_WDISP16:
2359 case R_SPARC_8:
2360 case R_SPARC_16:
2361 case R_SPARC_32:
2362 case R_SPARC_HI22:
2363 case R_SPARC_22:
2364 case R_SPARC_13:
2365 case R_SPARC_LO10:
2366 case R_SPARC_UA16:
2367 case R_SPARC_UA32:
2368 r_sparc_plt32:
2369 /* r_symndx will be zero only for relocs against symbols
2370 from removed linkonce sections, or sections discarded by
2371 a linker script. */
2372 if (r_symndx == 0
2373 || (input_section->flags & SEC_ALLOC) == 0)
2374 break;
2375
2376 if ((info->shared
2377 && (! howto->pc_relative
2378 || (h != NULL
2379 && h->dynindx != -1
2380 && (! info->symbolic
2381 || (h->elf_link_hash_flags
2382 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2383 || (!info->shared
2384 && h != NULL
2385 && h->dynindx != -1
2386 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2387 && (((h->elf_link_hash_flags
2388 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2389 && (h->elf_link_hash_flags
2390 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2391 || h->root.type == bfd_link_hash_undefweak
2392 || h->root.type == bfd_link_hash_undefined)))
2393 {
2394 Elf_Internal_Rela outrel;
2395 bfd_byte *loc;
2396 bfd_boolean skip, relocate = FALSE;
2397
2398 /* When generating a shared object, these relocations
2399 are copied into the output file to be resolved at run
2400 time. */
2401
2402 BFD_ASSERT (sreloc != NULL);
2403
2404 skip = FALSE;
2405
2406 outrel.r_offset =
2407 _bfd_elf_section_offset (output_bfd, info, input_section,
2408 rel->r_offset);
2409 if (outrel.r_offset == (bfd_vma) -1)
2410 skip = TRUE;
2411 else if (outrel.r_offset == (bfd_vma) -2)
2412 skip = TRUE, relocate = TRUE;
2413 outrel.r_offset += (input_section->output_section->vma
2414 + input_section->output_offset);
2415
2416 /* Optimize unaligned reloc usage now that we know where
2417 it finally resides. */
2418 switch (r_type)
2419 {
2420 case R_SPARC_16:
2421 if (outrel.r_offset & 1)
2422 r_type = R_SPARC_UA16;
2423 break;
2424 case R_SPARC_UA16:
2425 if (!(outrel.r_offset & 1))
2426 r_type = R_SPARC_16;
2427 break;
2428 case R_SPARC_32:
2429 if (outrel.r_offset & 3)
2430 r_type = R_SPARC_UA32;
2431 break;
2432 case R_SPARC_UA32:
2433 if (!(outrel.r_offset & 3))
2434 r_type = R_SPARC_32;
2435 break;
2436 case R_SPARC_DISP8:
2437 case R_SPARC_DISP16:
2438 case R_SPARC_DISP32:
2439 /* If the symbol is not dynamic, we should not keep
2440 a dynamic relocation. But an .rela.* slot has been
2441 allocated for it, output R_SPARC_NONE.
2442 FIXME: Add code tracking needed dynamic relocs as
2443 e.g. i386 has. */
2444 if (h->dynindx == -1)
2445 skip = TRUE, relocate = TRUE;
2446 break;
2447 }
2448
2449 if (skip)
2450 memset (&outrel, 0, sizeof outrel);
2451 /* h->dynindx may be -1 if the symbol was marked to
2452 become local. */
2453 else if (h != NULL && ! is_plt
2454 && ((! info->symbolic && h->dynindx != -1)
2455 || (h->elf_link_hash_flags
2456 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2457 {
2458 BFD_ASSERT (h->dynindx != -1);
2459 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2460 outrel.r_addend = rel->r_addend;
2461 }
2462 else
2463 {
2464 if (r_type == R_SPARC_32)
2465 {
2466 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2467 outrel.r_addend = relocation + rel->r_addend;
2468 }
2469 else
2470 {
2471 long indx;
2472
2473 if (is_plt)
2474 sec = htab->splt;
2475
2476 if (bfd_is_abs_section (sec))
2477 indx = 0;
2478 else if (sec == NULL || sec->owner == NULL)
2479 {
2480 bfd_set_error (bfd_error_bad_value);
2481 return FALSE;
2482 }
2483 else
2484 {
2485 asection *osec;
2486
2487 osec = sec->output_section;
2488 indx = elf_section_data (osec)->dynindx;
2489
2490 /* FIXME: we really should be able to link non-pic
2491 shared libraries. */
2492 if (indx == 0)
2493 {
2494 BFD_FAIL ();
2495 (*_bfd_error_handler)
2496 (_("%s: probably compiled without -fPIC?"),
2497 bfd_archive_filename (input_bfd));
2498 bfd_set_error (bfd_error_bad_value);
2499 return FALSE;
2500 }
2501 }
2502
2503 outrel.r_info = ELF32_R_INFO (indx, r_type);
2504 outrel.r_addend = relocation + rel->r_addend;
2505 }
2506 }
2507
2508 loc = sreloc->contents;
2509 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2510 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2511
2512 /* This reloc will be computed at runtime, so there's no
2513 need to do anything now. */
2514 if (! relocate)
2515 continue;
2516 }
2517 break;
2518
2519 case R_SPARC_TLS_GD_HI22:
2520 if (! elf32_sparc_tdata (input_bfd)->has_tlsgd)
2521 {
2522 /* R_SPARC_REV32 used the same reloc number as
2523 R_SPARC_TLS_GD_HI22. */
2524 r_type = R_SPARC_REV32;
2525 break;
2526 }
2527 /* Fall through */
2528
2529 case R_SPARC_TLS_GD_LO10:
2530 case R_SPARC_TLS_IE_HI22:
2531 case R_SPARC_TLS_IE_LO10:
2532 r_type = elf32_sparc_tls_transition (info, input_bfd, r_type,
2533 h == NULL);
2534 tls_type = GOT_UNKNOWN;
2535 if (h == NULL && local_got_offsets)
2536 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2537 else if (h != NULL)
2538 {
2539 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2540 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
2541 switch (ELF32_R_TYPE (rel->r_info))
2542 {
2543 case R_SPARC_TLS_GD_HI22:
2544 case R_SPARC_TLS_IE_HI22:
2545 r_type = R_SPARC_TLS_LE_HIX22;
2546 break;
2547 default:
2548 r_type = R_SPARC_TLS_LE_LOX10;
2549 break;
2550 }
2551 }
2552 if (tls_type == GOT_TLS_IE)
2553 switch (r_type)
2554 {
2555 case R_SPARC_TLS_GD_HI22:
2556 r_type = R_SPARC_TLS_IE_HI22;
2557 break;
2558 case R_SPARC_TLS_GD_LO10:
2559 r_type = R_SPARC_TLS_IE_LO10;
2560 break;
2561 }
2562
2563 if (r_type == R_SPARC_TLS_LE_HIX22)
2564 {
2565 relocation = tpoff (info, relocation);
2566 break;
2567 }
2568 if (r_type == R_SPARC_TLS_LE_LOX10)
2569 {
2570 /* Change add into xor. */
2571 relocation = tpoff (info, relocation);
2572 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
2573 contents + rel->r_offset)
2574 | 0x80182000), contents + rel->r_offset);
2575 break;
2576 }
2577
2578 if (h != NULL)
2579 {
2580 off = h->got.offset;
2581 h->got.offset |= 1;
2582 }
2583 else
2584 {
2585 BFD_ASSERT (local_got_offsets != NULL);
2586 off = local_got_offsets[r_symndx];
2587 local_got_offsets[r_symndx] |= 1;
2588 }
2589
2590 r_sparc_tlsldm:
2591 if (htab->sgot == NULL)
2592 abort ();
2593
2594 if ((off & 1) != 0)
2595 off &= ~1;
2596 else
2597 {
2598 Elf_Internal_Rela outrel;
2599 Elf32_External_Rela *loc;
2600 int dr_type, indx;
2601
2602 if (htab->srelgot == NULL)
2603 abort ();
2604
2605 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
2606 outrel.r_offset = (htab->sgot->output_section->vma
2607 + htab->sgot->output_offset + off);
2608 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2609 if (r_type == R_SPARC_TLS_IE_HI22
2610 || r_type == R_SPARC_TLS_IE_LO10)
2611 dr_type = R_SPARC_TLS_TPOFF32;
2612 else
2613 dr_type = R_SPARC_TLS_DTPMOD32;
2614 if (dr_type == R_SPARC_TLS_TPOFF32 && indx == 0)
2615 outrel.r_addend = relocation - dtpoff_base (info);
2616 else
2617 outrel.r_addend = 0;
2618 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2619 loc = (Elf32_External_Rela *) htab->srelgot->contents;
2620 loc += htab->srelgot->reloc_count++;
2621 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2622 (bfd_byte *) loc);
2623
2624 if (r_type == R_SPARC_TLS_GD_HI22
2625 || r_type == R_SPARC_TLS_GD_LO10)
2626 {
2627 if (indx == 0)
2628 {
2629 BFD_ASSERT (! unresolved_reloc);
2630 bfd_put_32 (output_bfd,
2631 relocation - dtpoff_base (info),
2632 htab->sgot->contents + off + 4);
2633 }
2634 else
2635 {
2636 bfd_put_32 (output_bfd, 0,
2637 htab->sgot->contents + off + 4);
2638 outrel.r_info = ELF32_R_INFO (indx,
2639 R_SPARC_TLS_DTPOFF32);
2640 outrel.r_offset += 4;
2641 htab->srelgot->reloc_count++;
2642 loc++;
2643 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2644 (bfd_byte *) loc);
2645 }
2646 }
2647 else if (dr_type == R_SPARC_TLS_DTPMOD32)
2648 {
2649 bfd_put_32 (output_bfd, 0,
2650 htab->sgot->contents + off + 4);
2651 }
2652 }
2653
2654 if (off >= (bfd_vma) -2)
2655 abort ();
2656
2657 relocation = htab->sgot->output_offset + off - got_base;
2658 unresolved_reloc = FALSE;
2659 howto = _bfd_sparc_elf_howto_table + r_type;
2660 break;
2661
2662 case R_SPARC_TLS_LDM_HI22:
2663 case R_SPARC_TLS_LDM_LO10:
2664 if (! info->shared)
2665 {
2666 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2667 continue;
2668 }
2669 off = htab->tls_ldm_got.offset;
2670 htab->tls_ldm_got.offset |= 1;
2671 goto r_sparc_tlsldm;
2672
2673 case R_SPARC_TLS_LDO_HIX22:
2674 case R_SPARC_TLS_LDO_LOX10:
2675 if (info->shared)
2676 relocation -= dtpoff_base (info);
2677 else
2678 relocation = tpoff (info, relocation);
2679 break;
2680
2681 case R_SPARC_TLS_LE_HIX22:
2682 case R_SPARC_TLS_LE_LOX10:
2683 if (info->shared)
2684 {
2685 Elf_Internal_Rela outrel;
2686 bfd_boolean skip, relocate = FALSE;
2687
2688 BFD_ASSERT (sreloc != NULL);
2689 skip = FALSE;
2690 outrel.r_offset =
2691 _bfd_elf_section_offset (output_bfd, info, input_section,
2692 rel->r_offset);
2693 if (outrel.r_offset == (bfd_vma) -1)
2694 skip = TRUE;
2695 else if (outrel.r_offset == (bfd_vma) -2)
2696 skip = TRUE, relocate = TRUE;
2697 outrel.r_offset += (input_section->output_section->vma
2698 + input_section->output_offset);
2699 if (skip)
2700 memset (&outrel, 0, sizeof outrel);
2701 else
2702 {
2703 outrel.r_info = ELF32_R_INFO (0, r_type);
2704 outrel.r_addend = relocation - dtpoff_base (info)
2705 + rel->r_addend;
2706 }
2707
2708 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2709 (bfd_byte *) (((Elf32_External_Rela *)
2710 sreloc->contents)
2711 + sreloc->reloc_count));
2712 ++sreloc->reloc_count;
2713 continue;
2714 }
2715 relocation = tpoff (info, relocation);
2716 break;
2717
2718 case R_SPARC_TLS_LDM_CALL:
2719 if (! info->shared)
2720 {
2721 /* mov %g0, %o0 */
2722 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
2723 continue;
2724 }
2725 /* Fall through */
2726
2727 case R_SPARC_TLS_GD_CALL:
2728 tls_type = GOT_UNKNOWN;
2729 if (h == NULL && local_got_offsets)
2730 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2731 else if (h != NULL)
2732 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2733 if (! info->shared
2734 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
2735 {
2736 bfd_vma insn;
2737
2738 if (!info->shared && (h == NULL || h->dynindx == -1))
2739 {
2740 /* GD -> LE */
2741 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2742 continue;
2743 }
2744
2745 /* GD -> IE */
2746 if (rel + 1 < relend
2747 && ELF32_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
2748 && rel[1].r_offset == rel->r_offset + 4
2749 && ELF32_R_SYM (rel[1].r_info) == r_symndx
2750 && (((insn = bfd_get_32 (input_bfd,
2751 contents + rel[1].r_offset))
2752 >> 25) & 0x1f) == 8)
2753 {
2754 /* We have
2755 call __tls_get_addr, %tgd_call(foo)
2756 add %reg1, %reg2, %o0, %tgd_add(foo)
2757 and change it into IE:
2758 ld [%reg1 + %reg2], %o0, %tie_ld(foo)
2759 add %g7, %o0, %o0, %tie_add(foo).
2760 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
2761 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2. */
2762 bfd_put_32 (output_bfd, insn | 0xc0000000,
2763 contents + rel->r_offset);
2764 bfd_put_32 (output_bfd, 0x9001c008,
2765 contents + rel->r_offset + 4);
2766 rel++;
2767 continue;
2768 }
2769
2770 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
2771 continue;
2772 }
2773
2774 h = (struct elf_link_hash_entry *)
2775 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
2776 FALSE, TRUE);
2777 BFD_ASSERT (h != NULL);
2778 r_type = R_SPARC_WPLT30;
2779 howto = _bfd_sparc_elf_howto_table + r_type;
2780 goto r_sparc_wplt30;
2781
2782 case R_SPARC_TLS_GD_ADD:
2783 tls_type = GOT_UNKNOWN;
2784 if (h == NULL && local_got_offsets)
2785 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2786 else if (h != NULL)
2787 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2788 if (! info->shared || tls_type == GOT_TLS_IE)
2789 {
2790 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
2791 changed into IE:
2792 ld [%reg1 + %reg2], %reg3, %tie_ld(foo)
2793 or LE:
2794 add %g7, %reg2, %reg3. */
2795 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2796 if ((h != NULL && h->dynindx != -1) || info->shared)
2797 relocation = insn | 0xc0000000;
2798 else
2799 relocation = (insn & ~0x7c000) | 0x1c000;
2800 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2801 }
2802 continue;
2803
2804 case R_SPARC_TLS_LDM_ADD:
2805 if (! info->shared)
2806 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2807 continue;
2808
2809 case R_SPARC_TLS_LDO_ADD:
2810 if (! info->shared)
2811 {
2812 /* Change rs1 into %g7. */
2813 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2814 insn = (insn & ~0x7c000) | 0x1c000;
2815 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2816 }
2817 continue;
2818
2819 case R_SPARC_TLS_IE_LD:
2820 case R_SPARC_TLS_IE_LDX:
2821 if (! info->shared && (h == NULL || h->dynindx == -1))
2822 {
2823 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2824 int rs2 = insn & 0x1f;
2825 int rd = (insn >> 25) & 0x1f;
2826
2827 if (rs2 == rd)
2828 relocation = SPARC_NOP;
2829 else
2830 relocation = 0x80100000 | (insn & 0x3e00001f);
2831 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2832 }
2833 continue;
2834
2835 case R_SPARC_TLS_IE_ADD:
2836 /* Totally useless relocation. */
2837 continue;
2838
2839 case R_SPARC_TLS_DTPOFF32:
2840 relocation -= dtpoff_base (info);
2841 break;
2842
2843 default:
2844 break;
2845 }
2846
2847 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2848 because such sections are not SEC_ALLOC and thus ld.so will
2849 not process them. */
2850 if (unresolved_reloc
2851 && !((input_section->flags & SEC_DEBUGGING) != 0
2852 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
2853 (*_bfd_error_handler)
2854 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
2855 bfd_archive_filename (input_bfd),
2856 bfd_get_section_name (input_bfd, input_section),
2857 (long) rel->r_offset,
2858 h->root.root.string);
2859
2860 r = bfd_reloc_continue;
2861 if (r_type == R_SPARC_WDISP16)
2862 {
2863 bfd_vma x;
2864
2865 relocation += rel->r_addend;
2866 relocation -= (input_section->output_section->vma
2867 + input_section->output_offset);
2868 relocation -= rel->r_offset;
2869
2870 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2871 x |= ((((relocation >> 2) & 0xc000) << 6)
2872 | ((relocation >> 2) & 0x3fff));
2873 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2874
2875 if ((bfd_signed_vma) relocation < - 0x40000
2876 || (bfd_signed_vma) relocation > 0x3ffff)
2877 r = bfd_reloc_overflow;
2878 else
2879 r = bfd_reloc_ok;
2880 }
2881 else if (r_type == R_SPARC_REV32)
2882 {
2883 bfd_vma x;
2884
2885 relocation = relocation + rel->r_addend;
2886
2887 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2888 x = x + relocation;
2889 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
2890 r = bfd_reloc_ok;
2891 }
2892 else if (r_type == R_SPARC_TLS_LDO_HIX22
2893 || r_type == R_SPARC_TLS_LE_HIX22)
2894 {
2895 bfd_vma x;
2896
2897 relocation += rel->r_addend;
2898 relocation = relocation ^ 0xffffffff;
2899
2900 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2901 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
2902 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2903 r = bfd_reloc_ok;
2904 }
2905 else if (r_type == R_SPARC_TLS_LDO_LOX10
2906 || r_type == R_SPARC_TLS_LE_LOX10)
2907 {
2908 bfd_vma x;
2909
2910 relocation += rel->r_addend;
2911 relocation = (relocation & 0x3ff) | 0x1c00;
2912
2913 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2914 x = (x & ~(bfd_vma) 0x1fff) | relocation;
2915 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2916
2917 r = bfd_reloc_ok;
2918 }
2919 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
2920 && sec_do_relax (input_section)
2921 && rel->r_offset + 4 < input_section->_raw_size)
2922 {
2923 #define G0 0
2924 #define O7 15
2925 #define XCC (2 << 20)
2926 #define COND(x) (((x)&0xf)<<25)
2927 #define CONDA COND(0x8)
2928 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2929 #define INSN_BA (F2(0,2) | CONDA)
2930 #define INSN_OR F3(2, 0x2, 0)
2931 #define INSN_NOP F2(0,4)
2932
2933 bfd_vma x, y;
2934
2935 /* If the instruction is a call with either:
2936 restore
2937 arithmetic instruction with rd == %o7
2938 where rs1 != %o7 and rs2 if it is register != %o7
2939 then we can optimize if the call destination is near
2940 by changing the call into a branch always. */
2941 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2942 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
2943 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
2944 {
2945 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
2946 || ((y & OP3(0x28)) == 0 /* arithmetic */
2947 && (y & RD(~0)) == RD(O7)))
2948 && (y & RS1(~0)) != RS1(O7)
2949 && ((y & F3I(~0))
2950 || (y & RS2(~0)) != RS2(O7)))
2951 {
2952 bfd_vma reloc;
2953
2954 reloc = relocation + rel->r_addend - rel->r_offset;
2955 reloc -= (input_section->output_section->vma
2956 + input_section->output_offset);
2957
2958 /* Ensure the reloc fits into simm22. */
2959 if ((reloc & 3) == 0
2960 && ((reloc & ~(bfd_vma)0x7fffff) == 0
2961 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
2962 {
2963 reloc >>= 2;
2964
2965 /* Check whether it fits into simm19 on v9. */
2966 if (((reloc & 0x3c0000) == 0
2967 || (reloc & 0x3c0000) == 0x3c0000)
2968 && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
2969 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
2970 else
2971 x = INSN_BA | (reloc & 0x3fffff); /* ba */
2972 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2973 r = bfd_reloc_ok;
2974 if (rel->r_offset >= 4
2975 && (y & (0xffffffff ^ RS1(~0)))
2976 == (INSN_OR | RD(O7) | RS2(G0)))
2977 {
2978 bfd_vma z;
2979 unsigned int reg;
2980
2981 z = bfd_get_32 (input_bfd,
2982 contents + rel->r_offset - 4);
2983 if ((z & (0xffffffff ^ RD(~0)))
2984 != (INSN_OR | RS1(O7) | RS2(G0)))
2985 break;
2986
2987 /* The sequence was
2988 or %o7, %g0, %rN
2989 call foo
2990 or %rN, %g0, %o7
2991
2992 If call foo was replaced with ba, replace
2993 or %rN, %g0, %o7 with nop. */
2994
2995 reg = (y & RS1(~0)) >> 14;
2996 if (reg != ((z & RD(~0)) >> 25)
2997 || reg == G0 || reg == O7)
2998 break;
2999
3000 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
3001 contents + rel->r_offset + 4);
3002 }
3003
3004 }
3005 }
3006 }
3007 }
3008
3009 if (r == bfd_reloc_continue)
3010 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3011 contents, rel->r_offset,
3012 relocation, rel->r_addend);
3013
3014 if (r != bfd_reloc_ok)
3015 {
3016 switch (r)
3017 {
3018 default:
3019 case bfd_reloc_outofrange:
3020 abort ();
3021 case bfd_reloc_overflow:
3022 {
3023 const char *name;
3024
3025 if (h != NULL)
3026 name = h->root.root.string;
3027 else
3028 {
3029 name = bfd_elf_string_from_elf_section (input_bfd,
3030 symtab_hdr->sh_link,
3031 sym->st_name);
3032 if (name == NULL)
3033 return FALSE;
3034 if (*name == '\0')
3035 name = bfd_section_name (input_bfd, sec);
3036 }
3037 if (! ((*info->callbacks->reloc_overflow)
3038 (info, name, howto->name, (bfd_vma) 0,
3039 input_bfd, input_section, rel->r_offset)))
3040 return FALSE;
3041 }
3042 break;
3043 }
3044 }
3045 }
3046
3047 return TRUE;
3048 }
3049
3050 /* Finish up dynamic symbol handling. We set the contents of various
3051 dynamic sections here. */
3052
3053 static bfd_boolean
elf32_sparc_finish_dynamic_symbol(output_bfd,info,h,sym)3054 elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym)
3055 bfd *output_bfd;
3056 struct bfd_link_info *info;
3057 struct elf_link_hash_entry *h;
3058 Elf_Internal_Sym *sym;
3059 {
3060 bfd *dynobj;
3061 struct elf32_sparc_link_hash_table *htab;
3062
3063 htab = elf32_sparc_hash_table (info);
3064 dynobj = htab->elf.dynobj;
3065
3066 if (h->plt.offset != (bfd_vma) -1)
3067 {
3068 asection *splt;
3069 asection *srela;
3070 Elf_Internal_Rela rela;
3071 bfd_byte *loc;
3072
3073 /* This symbol has an entry in the procedure linkage table. Set
3074 it up. */
3075
3076 BFD_ASSERT (h->dynindx != -1);
3077
3078 splt = htab->splt;
3079 srela = htab->srelplt;
3080 BFD_ASSERT (splt != NULL && srela != NULL);
3081
3082 /* Fill in the entry in the procedure linkage table. */
3083 bfd_put_32 (output_bfd,
3084 PLT_ENTRY_WORD0 + h->plt.offset,
3085 splt->contents + h->plt.offset);
3086 bfd_put_32 (output_bfd,
3087 (PLT_ENTRY_WORD1
3088 + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)),
3089 splt->contents + h->plt.offset + 4);
3090 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3091 splt->contents + h->plt.offset + 8);
3092
3093 /* Fill in the entry in the .rela.plt section. */
3094 rela.r_offset = (splt->output_section->vma
3095 + splt->output_offset
3096 + h->plt.offset);
3097 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
3098 rela.r_addend = 0;
3099 loc = srela->contents;
3100 loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela);
3101 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3102
3103 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3104 {
3105 /* Mark the symbol as undefined, rather than as defined in
3106 the .plt section. Leave the value alone. */
3107 sym->st_shndx = SHN_UNDEF;
3108 /* If the symbol is weak, we do need to clear the value.
3109 Otherwise, the PLT entry would provide a definition for
3110 the symbol even if the symbol wasn't defined anywhere,
3111 and so the symbol would never be NULL. */
3112 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
3113 == 0)
3114 sym->st_value = 0;
3115 }
3116 }
3117
3118 if (h->got.offset != (bfd_vma) -1
3119 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_GD
3120 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_IE)
3121 {
3122 asection *sgot;
3123 asection *srela;
3124 Elf_Internal_Rela rela;
3125 bfd_byte *loc;
3126
3127 /* This symbol has an entry in the global offset table. Set it
3128 up. */
3129
3130 sgot = htab->sgot;
3131 srela = htab->srelgot;
3132 BFD_ASSERT (sgot != NULL && srela != NULL);
3133
3134 rela.r_offset = (sgot->output_section->vma
3135 + sgot->output_offset
3136 + (h->got.offset &~ (bfd_vma) 1));
3137
3138 /* If this is a -Bsymbolic link, and the symbol is defined
3139 locally, we just want to emit a RELATIVE reloc. Likewise if
3140 the symbol was forced to be local because of a version file.
3141 The entry in the global offset table will already have been
3142 initialized in the relocate_section function. */
3143 if (info->shared
3144 && (info->symbolic || h->dynindx == -1)
3145 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3146 {
3147 asection *sec = h->root.u.def.section;
3148 rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
3149 rela.r_addend = (h->root.u.def.value
3150 + sec->output_section->vma
3151 + sec->output_offset);
3152 }
3153 else
3154 {
3155 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
3156 rela.r_addend = 0;
3157 }
3158
3159 bfd_put_32 (output_bfd, (bfd_vma) 0,
3160 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
3161 loc = srela->contents;
3162 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3163 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3164 }
3165
3166 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3167 {
3168 asection *s;
3169 Elf_Internal_Rela rela;
3170 bfd_byte *loc;
3171
3172 /* This symbols needs a copy reloc. Set it up. */
3173
3174 BFD_ASSERT (h->dynindx != -1);
3175
3176 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3177 ".rela.bss");
3178 BFD_ASSERT (s != NULL);
3179
3180 rela.r_offset = (h->root.u.def.value
3181 + h->root.u.def.section->output_section->vma
3182 + h->root.u.def.section->output_offset);
3183 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY);
3184 rela.r_addend = 0;
3185 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3186 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3187 }
3188
3189 /* Mark some specially defined symbols as absolute. */
3190 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3191 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3192 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3193 sym->st_shndx = SHN_ABS;
3194
3195 return TRUE;
3196 }
3197
3198 /* Finish up the dynamic sections. */
3199
3200 static bfd_boolean
elf32_sparc_finish_dynamic_sections(output_bfd,info)3201 elf32_sparc_finish_dynamic_sections (output_bfd, info)
3202 bfd *output_bfd;
3203 struct bfd_link_info *info;
3204 {
3205 bfd *dynobj;
3206 asection *sdyn;
3207 struct elf32_sparc_link_hash_table *htab;
3208
3209 htab = elf32_sparc_hash_table (info);
3210 dynobj = htab->elf.dynobj;
3211
3212 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3213
3214 if (elf_hash_table (info)->dynamic_sections_created)
3215 {
3216 asection *splt;
3217 Elf32_External_Dyn *dyncon, *dynconend;
3218
3219 splt = bfd_get_section_by_name (dynobj, ".plt");
3220 BFD_ASSERT (splt != NULL && sdyn != NULL);
3221
3222 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3223 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3224 for (; dyncon < dynconend; dyncon++)
3225 {
3226 Elf_Internal_Dyn dyn;
3227 const char *name;
3228 bfd_boolean size;
3229
3230 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3231
3232 switch (dyn.d_tag)
3233 {
3234 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
3235 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
3236 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
3237 default: name = NULL; size = FALSE; break;
3238 }
3239
3240 if (name != NULL)
3241 {
3242 asection *s;
3243
3244 s = bfd_get_section_by_name (output_bfd, name);
3245 if (s == NULL)
3246 dyn.d_un.d_val = 0;
3247 else
3248 {
3249 if (! size)
3250 dyn.d_un.d_ptr = s->vma;
3251 else
3252 {
3253 if (s->_cooked_size != 0)
3254 dyn.d_un.d_val = s->_cooked_size;
3255 else
3256 dyn.d_un.d_val = s->_raw_size;
3257 }
3258 }
3259 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3260 }
3261 }
3262
3263 /* Clear the first four entries in the procedure linkage table,
3264 and put a nop in the last four bytes. */
3265 if (splt->_raw_size > 0)
3266 {
3267 memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
3268 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
3269 splt->contents + splt->_raw_size - 4);
3270 }
3271
3272 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0;
3273 }
3274
3275 /* Set the first entry in the global offset table to the address of
3276 the dynamic section. */
3277 if (htab->sgot && htab->sgot->_raw_size > 0)
3278 {
3279 if (sdyn == NULL)
3280 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents);
3281 else
3282 bfd_put_32 (output_bfd,
3283 sdyn->output_section->vma + sdyn->output_offset,
3284 htab->sgot->contents);
3285 }
3286
3287 if (htab->sgot)
3288 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3289
3290 return TRUE;
3291 }
3292
3293 /* Functions for dealing with the e_flags field.
3294
3295 We don't define set_private_flags or copy_private_bfd_data because
3296 the only currently defined values are based on the bfd mach number,
3297 so we use the latter instead and defer setting e_flags until the
3298 file is written out. */
3299
3300 /* Merge backend specific data from an object file to the output
3301 object file when linking. */
3302
3303 static bfd_boolean
elf32_sparc_merge_private_bfd_data(ibfd,obfd)3304 elf32_sparc_merge_private_bfd_data (ibfd, obfd)
3305 bfd *ibfd;
3306 bfd *obfd;
3307 {
3308 bfd_boolean error;
3309 /* FIXME: This should not be static. */
3310 static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
3311
3312 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3313 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3314 return TRUE;
3315
3316 error = FALSE;
3317
3318 if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9)
3319 {
3320 error = TRUE;
3321 (*_bfd_error_handler)
3322 (_("%s: compiled for a 64 bit system and target is 32 bit"),
3323 bfd_archive_filename (ibfd));
3324 }
3325 else if ((ibfd->flags & DYNAMIC) == 0)
3326 {
3327 if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3328 bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
3329 }
3330
3331 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
3332 != previous_ibfd_e_flags)
3333 && previous_ibfd_e_flags != (unsigned long) -1)
3334 {
3335 (*_bfd_error_handler)
3336 (_("%s: linking little endian files with big endian files"),
3337 bfd_archive_filename (ibfd));
3338 error = TRUE;
3339 }
3340 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
3341
3342 if (error)
3343 {
3344 bfd_set_error (bfd_error_bad_value);
3345 return FALSE;
3346 }
3347
3348 return TRUE;
3349 }
3350
3351 /* Set the right machine number. */
3352
3353 static bfd_boolean
elf32_sparc_object_p(abfd)3354 elf32_sparc_object_p (abfd)
3355 bfd *abfd;
3356 {
3357 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
3358 {
3359 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
3360 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3361 bfd_mach_sparc_v8plusb);
3362 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
3363 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3364 bfd_mach_sparc_v8plusa);
3365 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
3366 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3367 bfd_mach_sparc_v8plus);
3368 else
3369 return FALSE;
3370 }
3371 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
3372 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3373 bfd_mach_sparc_sparclite_le);
3374 else
3375 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
3376 }
3377
3378 /* The final processing done just before writing out the object file.
3379 We need to set the e_machine field appropriately. */
3380
3381 static void
elf32_sparc_final_write_processing(abfd,linker)3382 elf32_sparc_final_write_processing (abfd, linker)
3383 bfd *abfd;
3384 bfd_boolean linker ATTRIBUTE_UNUSED;
3385 {
3386 switch (bfd_get_mach (abfd))
3387 {
3388 case bfd_mach_sparc :
3389 break; /* nothing to do */
3390 case bfd_mach_sparc_v8plus :
3391 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3392 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3393 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
3394 break;
3395 case bfd_mach_sparc_v8plusa :
3396 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3397 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3398 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
3399 break;
3400 case bfd_mach_sparc_v8plusb :
3401 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3402 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3403 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1
3404 | EF_SPARC_SUN_US3;
3405 break;
3406 case bfd_mach_sparc_sparclite_le :
3407 elf_elfheader (abfd)->e_machine = EM_SPARC;
3408 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
3409 break;
3410 default :
3411 abort ();
3412 break;
3413 }
3414 }
3415
3416 static enum elf_reloc_type_class
elf32_sparc_reloc_type_class(rela)3417 elf32_sparc_reloc_type_class (rela)
3418 const Elf_Internal_Rela *rela;
3419 {
3420 switch ((int) ELF32_R_TYPE (rela->r_info))
3421 {
3422 case R_SPARC_RELATIVE:
3423 return reloc_class_relative;
3424 case R_SPARC_JMP_SLOT:
3425 return reloc_class_plt;
3426 case R_SPARC_COPY:
3427 return reloc_class_copy;
3428 default:
3429 return reloc_class_normal;
3430 }
3431 }
3432
3433 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
3434 #define TARGET_BIG_NAME "elf32-sparc"
3435 #define ELF_ARCH bfd_arch_sparc
3436 #define ELF_MACHINE_CODE EM_SPARC
3437 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
3438 #define ELF_MAXPAGESIZE 0x10000
3439
3440 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
3441 #define bfd_elf32_bfd_link_hash_table_create \
3442 elf32_sparc_link_hash_table_create
3443 #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section
3444 #define bfd_elf32_new_section_hook elf32_sparc_new_section_hook
3445 #define elf_info_to_howto elf32_sparc_info_to_howto
3446 #define elf_backend_copy_indirect_symbol \
3447 elf32_sparc_copy_indirect_symbol
3448 #define elf_backend_create_dynamic_sections \
3449 elf32_sparc_create_dynamic_sections
3450 #define elf_backend_check_relocs elf32_sparc_check_relocs
3451 #define elf_backend_adjust_dynamic_symbol \
3452 elf32_sparc_adjust_dynamic_symbol
3453 #define elf_backend_size_dynamic_sections \
3454 elf32_sparc_size_dynamic_sections
3455 #define elf_backend_relocate_section elf32_sparc_relocate_section
3456 #define elf_backend_finish_dynamic_symbol \
3457 elf32_sparc_finish_dynamic_symbol
3458 #define elf_backend_finish_dynamic_sections \
3459 elf32_sparc_finish_dynamic_sections
3460 #define bfd_elf32_bfd_merge_private_bfd_data \
3461 elf32_sparc_merge_private_bfd_data
3462 #define bfd_elf32_mkobject elf32_sparc_mkobject
3463 #define elf_backend_object_p elf32_sparc_object_p
3464 #define elf_backend_final_write_processing \
3465 elf32_sparc_final_write_processing
3466 #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
3467 #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
3468 #define elf_backend_grok_psinfo elf32_sparc_grok_psinfo
3469 #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
3470
3471 #define elf_backend_can_gc_sections 1
3472 #define elf_backend_can_refcount 1
3473 #define elf_backend_want_got_plt 0
3474 #define elf_backend_plt_readonly 0
3475 #define elf_backend_want_plt_sym 1
3476 #define elf_backend_got_header_size 4
3477 #define elf_backend_rela_normal 1
3478
3479 #include "elf32-target.h"
3480