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Correct spelling of "relocatable".
[thirdparty/binutils-gdb.git] / bfd / elf32-sparc.c
1 /* SPARC-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003 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 ((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 \f
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 *
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
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 \f
336 /* For unsupported relocs. */
337
338 static bfd_reloc_status_type
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
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
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
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 \f
505 /* Functions for the SPARC ELF linker. */
506
507 /* The name of the dynamic interpreter. This is put in the .interp
508 section. */
509
510 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
511
512 /* The nop opcode we use. */
513
514 #define SPARC_NOP 0x01000000
515
516 /* The size in bytes of an entry in the procedure linkage table. */
517
518 #define PLT_ENTRY_SIZE 12
519
520 /* The first four entries in a procedure linkage table are reserved,
521 and the initial contents are unimportant (we zero them out).
522 Subsequent entries look like this. See the SVR4 ABI SPARC
523 supplement to see how this works. */
524
525 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
526 #define PLT_ENTRY_WORD0 0x03000000
527 /* b,a .plt0. We fill in the offset later. */
528 #define PLT_ENTRY_WORD1 0x30800000
529 /* nop. */
530 #define PLT_ENTRY_WORD2 SPARC_NOP
531
532 /* The SPARC linker needs to keep track of the number of relocs that it
533 decides to copy as dynamic relocs in check_relocs for each symbol.
534 This is so that it can later discard them if they are found to be
535 unnecessary. We store the information in a field extending the
536 regular ELF linker hash table. */
537
538 struct elf32_sparc_dyn_relocs
539 {
540 struct elf32_sparc_dyn_relocs *next;
541
542 /* The input section of the reloc. */
543 asection *sec;
544
545 /* Total number of relocs copied for the input section. */
546 bfd_size_type count;
547
548 /* Number of pc-relative relocs copied for the input section. */
549 bfd_size_type pc_count;
550 };
551
552 /* SPARC ELF linker hash entry. */
553
554 struct elf32_sparc_link_hash_entry
555 {
556 struct elf_link_hash_entry elf;
557
558 /* Track dynamic relocs copied for this symbol. */
559 struct elf32_sparc_dyn_relocs *dyn_relocs;
560
561 #define GOT_UNKNOWN 0
562 #define GOT_NORMAL 1
563 #define GOT_TLS_GD 2
564 #define GOT_TLS_IE 3
565 unsigned char tls_type;
566 };
567
568 #define elf32_sparc_hash_entry(ent) ((struct elf32_sparc_link_hash_entry *)(ent))
569
570 struct elf32_sparc_obj_tdata
571 {
572 struct elf_obj_tdata root;
573
574 /* tls_type for each local got entry. */
575 char *local_got_tls_type;
576
577 /* TRUE if TLS GD relocs has been seen for this object. */
578 bfd_boolean has_tlsgd;
579 };
580
581 #define elf32_sparc_tdata(abfd) \
582 ((struct elf32_sparc_obj_tdata *) (abfd)->tdata.any)
583
584 #define elf32_sparc_local_got_tls_type(abfd) \
585 (elf32_sparc_tdata (abfd)->local_got_tls_type)
586
587 static bfd_boolean
588 elf32_sparc_mkobject (abfd)
589 bfd *abfd;
590 {
591 bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
592 abfd->tdata.any = bfd_zalloc (abfd, amt);
593 if (abfd->tdata.any == NULL)
594 return FALSE;
595 return TRUE;
596 }
597
598 /* SPARC ELF linker hash table. */
599
600 struct elf32_sparc_link_hash_table
601 {
602 struct elf_link_hash_table elf;
603
604 /* Short-cuts to get to dynamic linker sections. */
605 asection *sgot;
606 asection *srelgot;
607 asection *splt;
608 asection *srelplt;
609 asection *sdynbss;
610 asection *srelbss;
611
612 union {
613 bfd_signed_vma refcount;
614 bfd_vma offset;
615 } tls_ldm_got;
616
617 /* Small local sym to section mapping cache. */
618 struct sym_sec_cache sym_sec;
619 };
620
621 /* Get the SPARC ELF linker hash table from a link_info structure. */
622
623 #define elf32_sparc_hash_table(p) \
624 ((struct elf32_sparc_link_hash_table *) ((p)->hash))
625
626 /* Create an entry in an i386 ELF linker hash table. */
627
628 static struct bfd_hash_entry *
629 link_hash_newfunc (entry, table, string)
630 struct bfd_hash_entry *entry;
631 struct bfd_hash_table *table;
632 const char *string;
633 {
634 /* Allocate the structure if it has not already been allocated by a
635 subclass. */
636 if (entry == NULL)
637 {
638 entry = bfd_hash_allocate (table,
639 sizeof (struct elf32_sparc_link_hash_entry));
640 if (entry == NULL)
641 return entry;
642 }
643
644 /* Call the allocation method of the superclass. */
645 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
646 if (entry != NULL)
647 {
648 struct elf32_sparc_link_hash_entry *eh;
649
650 eh = (struct elf32_sparc_link_hash_entry *) entry;
651 eh->dyn_relocs = NULL;
652 eh->tls_type = GOT_UNKNOWN;
653 }
654
655 return entry;
656 }
657
658 /* Create a SPARC ELF linker hash table. */
659
660 static struct bfd_link_hash_table *
661 elf32_sparc_link_hash_table_create (abfd)
662 bfd *abfd;
663 {
664 struct elf32_sparc_link_hash_table *ret;
665 bfd_size_type amt = sizeof (struct elf32_sparc_link_hash_table);
666
667 ret = (struct elf32_sparc_link_hash_table *) bfd_malloc (amt);
668 if (ret == NULL)
669 return NULL;
670
671 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
672 {
673 free (ret);
674 return NULL;
675 }
676
677 ret->sgot = NULL;
678 ret->srelgot = NULL;
679 ret->splt = NULL;
680 ret->srelplt = NULL;
681 ret->sdynbss = NULL;
682 ret->srelbss = NULL;
683 ret->tls_ldm_got.refcount = 0;
684 ret->sym_sec.abfd = NULL;
685
686 return &ret->elf.root;
687 }
688
689 /* Create .got and .rela.got sections in DYNOBJ, and set up
690 shortcuts to them in our hash table. */
691
692 static bfd_boolean
693 create_got_section (dynobj, info)
694 bfd *dynobj;
695 struct bfd_link_info *info;
696 {
697 struct elf32_sparc_link_hash_table *htab;
698
699 if (! _bfd_elf_create_got_section (dynobj, info))
700 return FALSE;
701
702 htab = elf32_sparc_hash_table (info);
703 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
704 if (!htab->sgot)
705 abort ();
706
707 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
708 if (htab->srelgot == NULL
709 || ! bfd_set_section_flags (dynobj, htab->srelgot,
710 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
711 | SEC_IN_MEMORY | SEC_LINKER_CREATED
712 | SEC_READONLY))
713 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
714 return FALSE;
715 return TRUE;
716 }
717
718 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
719 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
720 hash table. */
721
722 static bfd_boolean
723 elf32_sparc_create_dynamic_sections (dynobj, info)
724 bfd *dynobj;
725 struct bfd_link_info *info;
726 {
727 struct elf32_sparc_link_hash_table *htab;
728
729 htab = elf32_sparc_hash_table (info);
730 if (!htab->sgot && !create_got_section (dynobj, info))
731 return FALSE;
732
733 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
734 return FALSE;
735
736 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
737 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
738 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
739 if (!info->shared)
740 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
741
742 if (!htab->splt || !htab->srelplt || !htab->sdynbss
743 || (!info->shared && !htab->srelbss))
744 abort ();
745
746 return TRUE;
747 }
748
749 /* Copy the extra info we tack onto an elf_link_hash_entry. */
750
751 static void
752 elf32_sparc_copy_indirect_symbol (bed, dir, ind)
753 struct elf_backend_data *bed;
754 struct elf_link_hash_entry *dir, *ind;
755 {
756 struct elf32_sparc_link_hash_entry *edir, *eind;
757
758 edir = (struct elf32_sparc_link_hash_entry *) dir;
759 eind = (struct elf32_sparc_link_hash_entry *) ind;
760
761 if (eind->dyn_relocs != NULL)
762 {
763 if (edir->dyn_relocs != NULL)
764 {
765 struct elf32_sparc_dyn_relocs **pp;
766 struct elf32_sparc_dyn_relocs *p;
767
768 if (ind->root.type == bfd_link_hash_indirect)
769 abort ();
770
771 /* Add reloc counts against the weak sym to the strong sym
772 list. Merge any entries against the same section. */
773 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
774 {
775 struct elf32_sparc_dyn_relocs *q;
776
777 for (q = edir->dyn_relocs; q != NULL; q = q->next)
778 if (q->sec == p->sec)
779 {
780 q->pc_count += p->pc_count;
781 q->count += p->count;
782 *pp = p->next;
783 break;
784 }
785 if (q == NULL)
786 pp = &p->next;
787 }
788 *pp = edir->dyn_relocs;
789 }
790
791 edir->dyn_relocs = eind->dyn_relocs;
792 eind->dyn_relocs = NULL;
793 }
794
795 if (ind->root.type == bfd_link_hash_indirect
796 && dir->got.refcount <= 0)
797 {
798 edir->tls_type = eind->tls_type;
799 eind->tls_type = GOT_UNKNOWN;
800 }
801 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
802 }
803
804 static int
805 elf32_sparc_tls_transition (info, abfd, r_type, is_local)
806 struct bfd_link_info *info;
807 bfd *abfd;
808 int r_type;
809 int is_local;
810 {
811 if (r_type == R_SPARC_TLS_GD_HI22
812 && ! elf32_sparc_tdata (abfd)->has_tlsgd)
813 r_type = R_SPARC_REV32;
814
815 if (info->shared)
816 return r_type;
817
818 switch (r_type)
819 {
820 case R_SPARC_TLS_GD_HI22:
821 if (is_local)
822 return R_SPARC_TLS_LE_HIX22;
823 return R_SPARC_TLS_IE_HI22;
824 case R_SPARC_TLS_GD_LO10:
825 if (is_local)
826 return R_SPARC_TLS_LE_LOX10;
827 return R_SPARC_TLS_IE_LO10;
828 case R_SPARC_TLS_IE_HI22:
829 if (is_local)
830 return R_SPARC_TLS_LE_HIX22;
831 return r_type;
832 case R_SPARC_TLS_IE_LO10:
833 if (is_local)
834 return R_SPARC_TLS_LE_LOX10;
835 return r_type;
836 case R_SPARC_TLS_LDM_HI22:
837 return R_SPARC_TLS_LE_HIX22;
838 case R_SPARC_TLS_LDM_LO10:
839 return R_SPARC_TLS_LE_LOX10;
840 }
841
842 return r_type;
843 }
844
845 /* Look through the relocs for a section during the first phase, and
846 allocate space in the global offset table or procedure linkage
847 table. */
848
849 static bfd_boolean
850 elf32_sparc_check_relocs (abfd, info, sec, relocs)
851 bfd *abfd;
852 struct bfd_link_info *info;
853 asection *sec;
854 const Elf_Internal_Rela *relocs;
855 {
856 struct elf32_sparc_link_hash_table *htab;
857 Elf_Internal_Shdr *symtab_hdr;
858 struct elf_link_hash_entry **sym_hashes;
859 bfd_vma *local_got_offsets;
860 const Elf_Internal_Rela *rel;
861 const Elf_Internal_Rela *rel_end;
862 asection *sreloc;
863 bfd_boolean checked_tlsgd = FALSE;
864
865 if (info->relocatable)
866 return TRUE;
867
868 htab = elf32_sparc_hash_table (info);
869 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
870 sym_hashes = elf_sym_hashes (abfd);
871 local_got_offsets = elf_local_got_offsets (abfd);
872
873 sreloc = NULL;
874
875 rel_end = relocs + sec->reloc_count;
876 for (rel = relocs; rel < rel_end; rel++)
877 {
878 unsigned int r_type;
879 unsigned long r_symndx;
880 struct elf_link_hash_entry *h;
881
882 r_symndx = ELF32_R_SYM (rel->r_info);
883 r_type = ELF32_R_TYPE (rel->r_info);
884
885 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
886 {
887 (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
888 bfd_archive_filename (abfd),
889 r_symndx);
890 return FALSE;
891 }
892
893 if (r_symndx < symtab_hdr->sh_info)
894 h = NULL;
895 else
896 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
897
898 /* Compatibility with old R_SPARC_REV32 reloc conflicting
899 with R_SPARC_TLS_GD_HI22. */
900 if (! checked_tlsgd)
901 switch (r_type)
902 {
903 case R_SPARC_TLS_GD_HI22:
904 {
905 const Elf_Internal_Rela *relt;
906
907 for (relt = rel + 1; relt < rel_end; relt++)
908 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
909 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
910 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
911 break;
912 checked_tlsgd = TRUE;
913 elf32_sparc_tdata (abfd)->has_tlsgd = relt < rel_end;
914 }
915 break;
916 case R_SPARC_TLS_GD_LO10:
917 case R_SPARC_TLS_GD_ADD:
918 case R_SPARC_TLS_GD_CALL:
919 checked_tlsgd = TRUE;
920 elf32_sparc_tdata (abfd)->has_tlsgd = TRUE;
921 break;
922 }
923
924 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h == NULL);
925 switch (r_type)
926 {
927 case R_SPARC_TLS_LDM_HI22:
928 case R_SPARC_TLS_LDM_LO10:
929 htab->tls_ldm_got.refcount += 1;
930 break;
931
932 case R_SPARC_TLS_LE_HIX22:
933 case R_SPARC_TLS_LE_LOX10:
934 if (info->shared)
935 goto r_sparc_plt32;
936 break;
937
938 case R_SPARC_TLS_IE_HI22:
939 case R_SPARC_TLS_IE_LO10:
940 if (info->shared)
941 info->flags |= DF_STATIC_TLS;
942 /* Fall through */
943
944 case R_SPARC_GOT10:
945 case R_SPARC_GOT13:
946 case R_SPARC_GOT22:
947 case R_SPARC_TLS_GD_HI22:
948 case R_SPARC_TLS_GD_LO10:
949 /* This symbol requires a global offset table entry. */
950 {
951 int tls_type, old_tls_type;
952
953 switch (r_type)
954 {
955 default:
956 case R_SPARC_GOT10:
957 case R_SPARC_GOT13:
958 case R_SPARC_GOT22:
959 tls_type = GOT_NORMAL;
960 break;
961 case R_SPARC_TLS_GD_HI22:
962 case R_SPARC_TLS_GD_LO10:
963 tls_type = GOT_TLS_GD;
964 break;
965 case R_SPARC_TLS_IE_HI22:
966 case R_SPARC_TLS_IE_LO10:
967 tls_type = GOT_TLS_IE;
968 break;
969 }
970
971 if (h != NULL)
972 {
973 h->got.refcount += 1;
974 old_tls_type = elf32_sparc_hash_entry(h)->tls_type;
975 }
976 else
977 {
978 bfd_signed_vma *local_got_refcounts;
979
980 /* This is a global offset table entry for a local symbol. */
981 local_got_refcounts = elf_local_got_refcounts (abfd);
982 if (local_got_refcounts == NULL)
983 {
984 bfd_size_type size;
985
986 size = symtab_hdr->sh_info;
987 size *= (sizeof (bfd_signed_vma) + sizeof(char));
988 local_got_refcounts = ((bfd_signed_vma *)
989 bfd_zalloc (abfd, size));
990 if (local_got_refcounts == NULL)
991 return FALSE;
992 elf_local_got_refcounts (abfd) = local_got_refcounts;
993 elf32_sparc_local_got_tls_type (abfd)
994 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
995 }
996 local_got_refcounts[r_symndx] += 1;
997 old_tls_type = elf32_sparc_local_got_tls_type (abfd) [r_symndx];
998 }
999
1000 /* If a TLS symbol is accessed using IE at least once,
1001 there is no point to use dynamic model for it. */
1002 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1003 && (old_tls_type != GOT_TLS_GD
1004 || tls_type != GOT_TLS_IE))
1005 {
1006 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1007 tls_type = old_tls_type;
1008 else
1009 {
1010 (*_bfd_error_handler)
1011 (_("%s: `%s' accessed both as normal and thread local symbol"),
1012 bfd_archive_filename (abfd),
1013 h ? h->root.root.string : "<local>");
1014 return FALSE;
1015 }
1016 }
1017
1018 if (old_tls_type != tls_type)
1019 {
1020 if (h != NULL)
1021 elf32_sparc_hash_entry (h)->tls_type = tls_type;
1022 else
1023 elf32_sparc_local_got_tls_type (abfd) [r_symndx] = tls_type;
1024 }
1025 }
1026
1027 if (htab->elf.dynobj == NULL)
1028 htab->elf.dynobj = abfd;
1029 if (!create_got_section (htab->elf.dynobj, info))
1030 return FALSE;
1031 break;
1032
1033 case R_SPARC_TLS_GD_CALL:
1034 case R_SPARC_TLS_LDM_CALL:
1035 if (info->shared)
1036 {
1037 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1038 __tls_get_addr. */
1039 struct bfd_link_hash_entry *bh = NULL;
1040 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1041 "__tls_get_addr", 0,
1042 bfd_und_section_ptr, 0,
1043 NULL, FALSE, FALSE,
1044 &bh))
1045 return FALSE;
1046 h = (struct elf_link_hash_entry *) bh;
1047 }
1048 else
1049 break;
1050 /* Fall through */
1051
1052 case R_SPARC_PLT32:
1053 case R_SPARC_WPLT30:
1054 /* This symbol requires a procedure linkage table entry. We
1055 actually build the entry in adjust_dynamic_symbol,
1056 because this might be a case of linking PIC code without
1057 linking in any dynamic objects, in which case we don't
1058 need to generate a procedure linkage table after all. */
1059
1060 if (h == NULL)
1061 {
1062 /* The Solaris native assembler will generate a WPLT30
1063 reloc for a local symbol if you assemble a call from
1064 one section to another when using -K pic. We treat
1065 it as WDISP30. */
1066 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1067 goto r_sparc_plt32;
1068 break;
1069 }
1070
1071 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1072
1073 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1074 goto r_sparc_plt32;
1075 h->plt.refcount += 1;
1076 break;
1077
1078 case R_SPARC_PC10:
1079 case R_SPARC_PC22:
1080 if (h != NULL)
1081 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1082
1083 if (h != NULL
1084 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1085 break;
1086 /* Fall through. */
1087
1088 case R_SPARC_DISP8:
1089 case R_SPARC_DISP16:
1090 case R_SPARC_DISP32:
1091 case R_SPARC_WDISP30:
1092 case R_SPARC_WDISP22:
1093 case R_SPARC_WDISP19:
1094 case R_SPARC_WDISP16:
1095 case R_SPARC_8:
1096 case R_SPARC_16:
1097 case R_SPARC_32:
1098 case R_SPARC_HI22:
1099 case R_SPARC_22:
1100 case R_SPARC_13:
1101 case R_SPARC_LO10:
1102 case R_SPARC_UA16:
1103 case R_SPARC_UA32:
1104 if (h != NULL)
1105 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1106
1107 r_sparc_plt32:
1108 if (h != NULL && !info->shared)
1109 {
1110 /* We may need a .plt entry if the function this reloc
1111 refers to is in a shared lib. */
1112 h->plt.refcount += 1;
1113 }
1114
1115 /* If we are creating a shared library, and this is a reloc
1116 against a global symbol, or a non PC relative reloc
1117 against a local symbol, then we need to copy the reloc
1118 into the shared library. However, if we are linking with
1119 -Bsymbolic, we do not need to copy a reloc against a
1120 global symbol which is defined in an object we are
1121 including in the link (i.e., DEF_REGULAR is set). At
1122 this point we have not seen all the input files, so it is
1123 possible that DEF_REGULAR is not set now but will be set
1124 later (it is never cleared). In case of a weak definition,
1125 DEF_REGULAR may be cleared later by a strong definition in
1126 a shared library. We account for that possibility below by
1127 storing information in the relocs_copied field of the hash
1128 table entry. A similar situation occurs when creating
1129 shared libraries and symbol visibility changes render the
1130 symbol local.
1131
1132 If on the other hand, we are creating an executable, we
1133 may need to keep relocations for symbols satisfied by a
1134 dynamic library if we manage to avoid copy relocs for the
1135 symbol. */
1136 if ((info->shared
1137 && (sec->flags & SEC_ALLOC) != 0
1138 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1139 || (h != NULL
1140 && (! info->symbolic
1141 || h->root.type == bfd_link_hash_defweak
1142 || (h->elf_link_hash_flags
1143 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1144 || (!info->shared
1145 && (sec->flags & SEC_ALLOC) != 0
1146 && h != NULL
1147 && (h->root.type == bfd_link_hash_defweak
1148 || (h->elf_link_hash_flags
1149 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1150 {
1151 struct elf32_sparc_dyn_relocs *p;
1152 struct elf32_sparc_dyn_relocs **head;
1153
1154 /* When creating a shared object, we must copy these
1155 relocs into the output file. We create a reloc
1156 section in dynobj and make room for the reloc. */
1157 if (sreloc == NULL)
1158 {
1159 const char *name;
1160 bfd *dynobj;
1161
1162 name = (bfd_elf_string_from_elf_section
1163 (abfd,
1164 elf_elfheader (abfd)->e_shstrndx,
1165 elf_section_data (sec)->rel_hdr.sh_name));
1166 if (name == NULL)
1167 return FALSE;
1168
1169 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1170 && strcmp (bfd_get_section_name (abfd, sec),
1171 name + 5) == 0);
1172
1173 if (htab->elf.dynobj == NULL)
1174 htab->elf.dynobj = abfd;
1175 dynobj = htab->elf.dynobj;
1176
1177 sreloc = bfd_get_section_by_name (dynobj, name);
1178 if (sreloc == NULL)
1179 {
1180 flagword flags;
1181
1182 sreloc = bfd_make_section (dynobj, name);
1183 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1184 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1185 if ((sec->flags & SEC_ALLOC) != 0)
1186 flags |= SEC_ALLOC | SEC_LOAD;
1187 if (sreloc == NULL
1188 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1189 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1190 return FALSE;
1191 }
1192 elf_section_data (sec)->sreloc = sreloc;
1193 }
1194
1195 /* If this is a global symbol, we count the number of
1196 relocations we need for this symbol. */
1197 if (h != NULL)
1198 head = &((struct elf32_sparc_link_hash_entry *) h)->dyn_relocs;
1199 else
1200 {
1201 /* Track dynamic relocs needed for local syms too.
1202 We really need local syms available to do this
1203 easily. Oh well. */
1204
1205 asection *s;
1206 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1207 sec, r_symndx);
1208 if (s == NULL)
1209 return FALSE;
1210
1211 head = ((struct elf32_sparc_dyn_relocs **)
1212 &elf_section_data (s)->local_dynrel);
1213 }
1214
1215 p = *head;
1216 if (p == NULL || p->sec != sec)
1217 {
1218 bfd_size_type amt = sizeof *p;
1219 p = ((struct elf32_sparc_dyn_relocs *)
1220 bfd_alloc (htab->elf.dynobj, amt));
1221 if (p == NULL)
1222 return FALSE;
1223 p->next = *head;
1224 *head = p;
1225 p->sec = sec;
1226 p->count = 0;
1227 p->pc_count = 0;
1228 }
1229
1230 p->count += 1;
1231 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1232 p->pc_count += 1;
1233 }
1234
1235 break;
1236
1237 case R_SPARC_GNU_VTINHERIT:
1238 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1239 return FALSE;
1240 break;
1241
1242 case R_SPARC_GNU_VTENTRY:
1243 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1244 return FALSE;
1245 break;
1246
1247 default:
1248 break;
1249 }
1250 }
1251
1252 return TRUE;
1253 }
1254
1255 static asection *
1256 elf32_sparc_gc_mark_hook (sec, info, rel, h, sym)
1257 asection *sec;
1258 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1259 Elf_Internal_Rela *rel;
1260 struct elf_link_hash_entry *h;
1261 Elf_Internal_Sym *sym;
1262 {
1263 if (h != NULL)
1264 {
1265 switch (ELF32_R_TYPE (rel->r_info))
1266 {
1267 case R_SPARC_GNU_VTINHERIT:
1268 case R_SPARC_GNU_VTENTRY:
1269 break;
1270
1271 default:
1272 switch (h->root.type)
1273 {
1274 case bfd_link_hash_defined:
1275 case bfd_link_hash_defweak:
1276 return h->root.u.def.section;
1277
1278 case bfd_link_hash_common:
1279 return h->root.u.c.p->section;
1280
1281 default:
1282 break;
1283 }
1284 }
1285 }
1286 else
1287 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1288
1289 return NULL;
1290 }
1291
1292 /* Update the got entry reference counts for the section being removed. */
1293 static bfd_boolean
1294 elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs)
1295 bfd *abfd;
1296 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1297 asection *sec;
1298 const Elf_Internal_Rela *relocs;
1299 {
1300 Elf_Internal_Shdr *symtab_hdr;
1301 struct elf_link_hash_entry **sym_hashes;
1302 bfd_signed_vma *local_got_refcounts;
1303 const Elf_Internal_Rela *rel, *relend;
1304
1305 elf_section_data (sec)->local_dynrel = NULL;
1306
1307 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1308 sym_hashes = elf_sym_hashes (abfd);
1309 local_got_refcounts = elf_local_got_refcounts (abfd);
1310
1311 relend = relocs + sec->reloc_count;
1312 for (rel = relocs; rel < relend; rel++)
1313 {
1314 unsigned long r_symndx;
1315 unsigned int r_type;
1316 struct elf_link_hash_entry *h = NULL;
1317
1318 r_symndx = ELF32_R_SYM (rel->r_info);
1319 if (r_symndx >= symtab_hdr->sh_info)
1320 {
1321 struct elf32_sparc_link_hash_entry *eh;
1322 struct elf32_sparc_dyn_relocs **pp;
1323 struct elf32_sparc_dyn_relocs *p;
1324
1325 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1326 eh = (struct elf32_sparc_link_hash_entry *) h;
1327 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1328 if (p->sec == sec)
1329 {
1330 /* Everything must go for SEC. */
1331 *pp = p->next;
1332 break;
1333 }
1334 }
1335
1336 r_type = ELF32_R_TYPE (rel->r_info);
1337 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h != NULL);
1338 switch (r_type)
1339 {
1340 case R_SPARC_TLS_LDM_HI22:
1341 case R_SPARC_TLS_LDM_LO10:
1342 if (elf32_sparc_hash_table (info)->tls_ldm_got.refcount > 0)
1343 elf32_sparc_hash_table (info)->tls_ldm_got.refcount -= 1;
1344 break;
1345
1346 case R_SPARC_TLS_GD_HI22:
1347 case R_SPARC_TLS_GD_LO10:
1348 case R_SPARC_TLS_IE_HI22:
1349 case R_SPARC_TLS_IE_LO10:
1350 case R_SPARC_GOT10:
1351 case R_SPARC_GOT13:
1352 case R_SPARC_GOT22:
1353 if (h != NULL)
1354 {
1355 if (h->got.refcount > 0)
1356 h->got.refcount--;
1357 }
1358 else
1359 {
1360 if (local_got_refcounts[r_symndx] > 0)
1361 local_got_refcounts[r_symndx]--;
1362 }
1363 break;
1364
1365 case R_SPARC_PC10:
1366 case R_SPARC_PC22:
1367 if (h != NULL
1368 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1369 break;
1370 /* Fall through. */
1371
1372 case R_SPARC_DISP8:
1373 case R_SPARC_DISP16:
1374 case R_SPARC_DISP32:
1375 case R_SPARC_WDISP30:
1376 case R_SPARC_WDISP22:
1377 case R_SPARC_WDISP19:
1378 case R_SPARC_WDISP16:
1379 case R_SPARC_8:
1380 case R_SPARC_16:
1381 case R_SPARC_32:
1382 case R_SPARC_HI22:
1383 case R_SPARC_22:
1384 case R_SPARC_13:
1385 case R_SPARC_LO10:
1386 case R_SPARC_UA16:
1387 case R_SPARC_UA32:
1388 case R_SPARC_PLT32:
1389 if (info->shared)
1390 break;
1391 /* Fall through. */
1392
1393 case R_SPARC_WPLT30:
1394 if (h != NULL)
1395 {
1396 if (h->plt.refcount > 0)
1397 h->plt.refcount--;
1398 }
1399 break;
1400
1401 default:
1402 break;
1403 }
1404 }
1405
1406 return TRUE;
1407 }
1408
1409 /* Adjust a symbol defined by a dynamic object and referenced by a
1410 regular object. The current definition is in some section of the
1411 dynamic object, but we're not including those sections. We have to
1412 change the definition to something the rest of the link can
1413 understand. */
1414
1415 static bfd_boolean
1416 elf32_sparc_adjust_dynamic_symbol (info, h)
1417 struct bfd_link_info *info;
1418 struct elf_link_hash_entry *h;
1419 {
1420 struct elf32_sparc_link_hash_table *htab;
1421 struct elf32_sparc_link_hash_entry * eh;
1422 struct elf32_sparc_dyn_relocs *p;
1423 asection *s;
1424 unsigned int power_of_two;
1425
1426 htab = elf32_sparc_hash_table (info);
1427
1428 /* Make sure we know what is going on here. */
1429 BFD_ASSERT (htab->elf.dynobj != NULL
1430 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1431 || h->weakdef != NULL
1432 || ((h->elf_link_hash_flags
1433 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1434 && (h->elf_link_hash_flags
1435 & ELF_LINK_HASH_REF_REGULAR) != 0
1436 && (h->elf_link_hash_flags
1437 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1438
1439 /* If this is a function, put it in the procedure linkage table. We
1440 will fill in the contents of the procedure linkage table later
1441 (although we could actually do it here). The STT_NOTYPE
1442 condition is a hack specifically for the Oracle libraries
1443 delivered for Solaris; for some inexplicable reason, they define
1444 some of their functions as STT_NOTYPE when they really should be
1445 STT_FUNC. */
1446 if (h->type == STT_FUNC
1447 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
1448 || (h->type == STT_NOTYPE
1449 && (h->root.type == bfd_link_hash_defined
1450 || h->root.type == bfd_link_hash_defweak)
1451 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1452 {
1453 if (h->plt.refcount <= 0
1454 || (! info->shared
1455 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1456 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
1457 && h->root.type != bfd_link_hash_undefweak
1458 && h->root.type != bfd_link_hash_undefined))
1459 {
1460 /* This case can occur if we saw a WPLT30 reloc in an input
1461 file, but the symbol was never referred to by a dynamic
1462 object, or if all references were garbage collected. In
1463 such a case, we don't actually need to build a procedure
1464 linkage table, and we can just do a WDISP30 reloc instead. */
1465 h->plt.offset = (bfd_vma) -1;
1466 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1467 }
1468
1469 return TRUE;
1470 }
1471 else
1472 h->plt.offset = (bfd_vma) -1;
1473
1474 /* If this is a weak symbol, and there is a real definition, the
1475 processor independent code will have arranged for us to see the
1476 real definition first, and we can just use the same value. */
1477 if (h->weakdef != NULL)
1478 {
1479 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1480 || h->weakdef->root.type == bfd_link_hash_defweak);
1481 h->root.u.def.section = h->weakdef->root.u.def.section;
1482 h->root.u.def.value = h->weakdef->root.u.def.value;
1483 return TRUE;
1484 }
1485
1486 /* This is a reference to a symbol defined by a dynamic object which
1487 is not a function. */
1488
1489 /* If we are creating a shared library, we must presume that the
1490 only references to the symbol are via the global offset table.
1491 For such cases we need not do anything here; the relocations will
1492 be handled correctly by relocate_section. */
1493 if (info->shared)
1494 return TRUE;
1495
1496 /* If there are no references to this symbol that do not use the
1497 GOT, we don't need to generate a copy reloc. */
1498 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1499 return TRUE;
1500
1501 eh = (struct elf32_sparc_link_hash_entry *) h;
1502 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1503 {
1504 s = p->sec->output_section;
1505 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1506 break;
1507 }
1508
1509 /* If we didn't find any dynamic relocs in read-only sections, then
1510 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1511 if (p == NULL)
1512 {
1513 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1514 return TRUE;
1515 }
1516
1517 /* We must allocate the symbol in our .dynbss section, which will
1518 become part of the .bss section of the executable. There will be
1519 an entry for this symbol in the .dynsym section. The dynamic
1520 object will contain position independent code, so all references
1521 from the dynamic object to this symbol will go through the global
1522 offset table. The dynamic linker will use the .dynsym entry to
1523 determine the address it must put in the global offset table, so
1524 both the dynamic object and the regular object will refer to the
1525 same memory location for the variable. */
1526
1527 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1528 to copy the initial value out of the dynamic object and into the
1529 runtime process image. We need to remember the offset into the
1530 .rel.bss section we are going to use. */
1531 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1532 {
1533 htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
1534 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1535 }
1536
1537 /* We need to figure out the alignment required for this symbol. I
1538 have no idea how ELF linkers handle this. */
1539 power_of_two = bfd_log2 (h->size);
1540 if (power_of_two > 3)
1541 power_of_two = 3;
1542
1543 /* Apply the required alignment. */
1544 s = htab->sdynbss;
1545 s->_raw_size = BFD_ALIGN (s->_raw_size,
1546 (bfd_size_type) (1 << power_of_two));
1547 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1548 {
1549 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1550 return FALSE;
1551 }
1552
1553 /* Define the symbol as being at this point in the section. */
1554 h->root.u.def.section = s;
1555 h->root.u.def.value = s->_raw_size;
1556
1557 /* Increment the section size to make room for the symbol. */
1558 s->_raw_size += h->size;
1559
1560 return TRUE;
1561 }
1562
1563 /* This is the condition under which finish_dynamic_symbol will be called
1564 from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol
1565 routine, we'll need to do something about initializing any .plt and .got
1566 entries in relocate_section. */
1567 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1568 ((DYN) \
1569 && ((INFO)->shared \
1570 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1571 && ((H)->dynindx != -1 \
1572 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1573
1574 /* Allocate space in .plt, .got and associated reloc sections for
1575 dynamic relocs. */
1576
1577 static bfd_boolean
1578 allocate_dynrelocs (h, inf)
1579 struct elf_link_hash_entry *h;
1580 PTR inf;
1581 {
1582 struct bfd_link_info *info;
1583 struct elf32_sparc_link_hash_table *htab;
1584 struct elf32_sparc_link_hash_entry *eh;
1585 struct elf32_sparc_dyn_relocs *p;
1586
1587 if (h->root.type == bfd_link_hash_indirect)
1588 return TRUE;
1589
1590 if (h->root.type == bfd_link_hash_warning)
1591 /* When warning symbols are created, they **replace** the "real"
1592 entry in the hash table, thus we never get to see the real
1593 symbol in a hash traversal. So look at it now. */
1594 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1595
1596 info = (struct bfd_link_info *) inf;
1597 htab = elf32_sparc_hash_table (info);
1598
1599 if (htab->elf.dynamic_sections_created
1600 && h->plt.refcount > 0)
1601 {
1602 /* Make sure this symbol is output as a dynamic symbol.
1603 Undefined weak syms won't yet be marked as dynamic. */
1604 if (h->dynindx == -1
1605 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1606 {
1607 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1608 return FALSE;
1609 }
1610
1611 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
1612 {
1613 asection *s = htab->splt;
1614
1615 /* The first four entries in .plt are reserved. */
1616 if (s->_raw_size == 0)
1617 s->_raw_size = 4 * PLT_ENTRY_SIZE;
1618
1619 /* The procedure linkage table has a maximum size. */
1620 if (s->_raw_size >= 0x400000)
1621 {
1622 bfd_set_error (bfd_error_bad_value);
1623 return FALSE;
1624 }
1625
1626 h->plt.offset = s->_raw_size;
1627
1628 /* If this symbol is not defined in a regular file, and we are
1629 not generating a shared library, then set the symbol to this
1630 location in the .plt. This is required to make function
1631 pointers compare as equal between the normal executable and
1632 the shared library. */
1633 if (! info->shared
1634 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1635 {
1636 h->root.u.def.section = s;
1637 h->root.u.def.value = h->plt.offset;
1638 }
1639
1640 /* Make room for this entry. */
1641 s->_raw_size += PLT_ENTRY_SIZE;
1642
1643 /* We also need to make an entry in the .rela.plt section. */
1644 htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
1645 }
1646 else
1647 {
1648 h->plt.offset = (bfd_vma) -1;
1649 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1650 }
1651 }
1652 else
1653 {
1654 h->plt.offset = (bfd_vma) -1;
1655 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1656 }
1657
1658 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
1659 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
1660 if (h->got.refcount > 0
1661 && !info->shared
1662 && h->dynindx == -1
1663 && elf32_sparc_hash_entry(h)->tls_type == GOT_TLS_IE)
1664 h->got.offset = (bfd_vma) -1;
1665 else if (h->got.refcount > 0)
1666 {
1667 asection *s;
1668 bfd_boolean dyn;
1669 int tls_type = elf32_sparc_hash_entry(h)->tls_type;
1670
1671 /* Make sure this symbol is output as a dynamic symbol.
1672 Undefined weak syms won't yet be marked as dynamic. */
1673 if (h->dynindx == -1
1674 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1675 {
1676 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1677 return FALSE;
1678 }
1679
1680 s = htab->sgot;
1681 h->got.offset = s->_raw_size;
1682 s->_raw_size += 4;
1683 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
1684 if (tls_type == GOT_TLS_GD)
1685 s->_raw_size += 4;
1686 dyn = htab->elf.dynamic_sections_created;
1687 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
1688 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
1689 global. */
1690 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1691 || tls_type == GOT_TLS_IE)
1692 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1693 else if (tls_type == GOT_TLS_GD)
1694 htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rela);
1695 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
1696 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1697 }
1698 else
1699 h->got.offset = (bfd_vma) -1;
1700
1701 eh = (struct elf32_sparc_link_hash_entry *) h;
1702 if (eh->dyn_relocs == NULL)
1703 return TRUE;
1704
1705 /* In the shared -Bsymbolic case, discard space allocated for
1706 dynamic pc-relative relocs against symbols which turn out to be
1707 defined in regular objects. For the normal shared case, discard
1708 space for pc-relative relocs that have become local due to symbol
1709 visibility changes. */
1710
1711 if (info->shared)
1712 {
1713 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1714 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
1715 || info->symbolic))
1716 {
1717 struct elf32_sparc_dyn_relocs **pp;
1718
1719 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1720 {
1721 p->count -= p->pc_count;
1722 p->pc_count = 0;
1723 if (p->count == 0)
1724 *pp = p->next;
1725 else
1726 pp = &p->next;
1727 }
1728 }
1729 }
1730 else
1731 {
1732 /* For the non-shared case, discard space for relocs against
1733 symbols which turn out to need copy relocs or are not
1734 dynamic. */
1735
1736 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1737 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1738 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1739 || (htab->elf.dynamic_sections_created
1740 && (h->root.type == bfd_link_hash_undefweak
1741 || h->root.type == bfd_link_hash_undefined))))
1742 {
1743 /* Make sure this symbol is output as a dynamic symbol.
1744 Undefined weak syms won't yet be marked as dynamic. */
1745 if (h->dynindx == -1
1746 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1747 {
1748 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1749 return FALSE;
1750 }
1751
1752 /* If that succeeded, we know we'll be keeping all the
1753 relocs. */
1754 if (h->dynindx != -1)
1755 goto keep;
1756 }
1757
1758 eh->dyn_relocs = NULL;
1759
1760 keep: ;
1761 }
1762
1763 /* Finally, allocate space. */
1764 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1765 {
1766 asection *sreloc = elf_section_data (p->sec)->sreloc;
1767 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
1768 }
1769
1770 return TRUE;
1771 }
1772
1773 /* Find any dynamic relocs that apply to read-only sections. */
1774
1775 static bfd_boolean
1776 readonly_dynrelocs (h, inf)
1777 struct elf_link_hash_entry *h;
1778 PTR inf;
1779 {
1780 struct elf32_sparc_link_hash_entry *eh;
1781 struct elf32_sparc_dyn_relocs *p;
1782
1783 if (h->root.type == bfd_link_hash_warning)
1784 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1785
1786 eh = (struct elf32_sparc_link_hash_entry *) h;
1787 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1788 {
1789 asection *s = p->sec->output_section;
1790
1791 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1792 {
1793 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1794
1795 info->flags |= DF_TEXTREL;
1796
1797 /* Not an error, just cut short the traversal. */
1798 return FALSE;
1799 }
1800 }
1801 return TRUE;
1802 }
1803
1804 /* Set the sizes of the dynamic sections. */
1805
1806 static bfd_boolean
1807 elf32_sparc_size_dynamic_sections (output_bfd, info)
1808 bfd *output_bfd ATTRIBUTE_UNUSED;
1809 struct bfd_link_info *info;
1810 {
1811 struct elf32_sparc_link_hash_table *htab;
1812 bfd *dynobj;
1813 asection *s;
1814 bfd *ibfd;
1815
1816 htab = elf32_sparc_hash_table (info);
1817 dynobj = htab->elf.dynobj;
1818 BFD_ASSERT (dynobj != NULL);
1819
1820 if (elf_hash_table (info)->dynamic_sections_created)
1821 {
1822 /* Set the contents of the .interp section to the interpreter. */
1823 if (info->executable)
1824 {
1825 s = bfd_get_section_by_name (dynobj, ".interp");
1826 BFD_ASSERT (s != NULL);
1827 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1828 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1829 }
1830 }
1831
1832 /* Set up .got offsets for local syms, and space for local dynamic
1833 relocs. */
1834 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1835 {
1836 bfd_signed_vma *local_got;
1837 bfd_signed_vma *end_local_got;
1838 char *local_tls_type;
1839 bfd_size_type locsymcount;
1840 Elf_Internal_Shdr *symtab_hdr;
1841 asection *srel;
1842
1843 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
1844 continue;
1845
1846 for (s = ibfd->sections; s != NULL; s = s->next)
1847 {
1848 struct elf32_sparc_dyn_relocs *p;
1849
1850 for (p = *((struct elf32_sparc_dyn_relocs **)
1851 &elf_section_data (s)->local_dynrel);
1852 p != NULL;
1853 p = p->next)
1854 {
1855 if (!bfd_is_abs_section (p->sec)
1856 && bfd_is_abs_section (p->sec->output_section))
1857 {
1858 /* Input section has been discarded, either because
1859 it is a copy of a linkonce section or due to
1860 linker script /DISCARD/, so we'll be discarding
1861 the relocs too. */
1862 }
1863 else if (p->count != 0)
1864 {
1865 srel = elf_section_data (p->sec)->sreloc;
1866 srel->_raw_size += p->count * sizeof (Elf32_External_Rela);
1867 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1868 info->flags |= DF_TEXTREL;
1869 }
1870 }
1871 }
1872
1873 local_got = elf_local_got_refcounts (ibfd);
1874 if (!local_got)
1875 continue;
1876
1877 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
1878 locsymcount = symtab_hdr->sh_info;
1879 end_local_got = local_got + locsymcount;
1880 local_tls_type = elf32_sparc_local_got_tls_type (ibfd);
1881 s = htab->sgot;
1882 srel = htab->srelgot;
1883 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
1884 {
1885 if (*local_got > 0)
1886 {
1887 *local_got = s->_raw_size;
1888 s->_raw_size += 4;
1889 if (*local_tls_type == GOT_TLS_GD)
1890 s->_raw_size += 4;
1891 if (info->shared
1892 || *local_tls_type == GOT_TLS_GD
1893 || *local_tls_type == GOT_TLS_IE)
1894 srel->_raw_size += sizeof (Elf32_External_Rela);
1895 }
1896 else
1897 *local_got = (bfd_vma) -1;
1898 }
1899 }
1900
1901 if (htab->tls_ldm_got.refcount > 0)
1902 {
1903 /* Allocate 2 got entries and 1 dynamic reloc for
1904 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
1905 htab->tls_ldm_got.offset = htab->sgot->_raw_size;
1906 htab->sgot->_raw_size += 8;
1907 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1908 }
1909 else
1910 htab->tls_ldm_got.offset = -1;
1911
1912 /* Allocate global sym .plt and .got entries, and space for global
1913 sym dynamic relocs. */
1914 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
1915
1916 if (elf_hash_table (info)->dynamic_sections_created)
1917 {
1918 /* Make space for the trailing nop in .plt. */
1919 if (htab->splt->_raw_size > 0)
1920 htab->splt->_raw_size += 4;
1921
1922 /* If the .got section is more than 0x1000 bytes, we add
1923 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1924 bit relocations have a greater chance of working. */
1925 if (htab->sgot->_raw_size >= 0x1000
1926 && elf_hash_table (info)->hgot->root.u.def.value == 0)
1927 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
1928 }
1929
1930 /* The check_relocs and adjust_dynamic_symbol entry points have
1931 determined the sizes of the various dynamic sections. Allocate
1932 memory for them. */
1933 for (s = dynobj->sections; s != NULL; s = s->next)
1934 {
1935 const char *name;
1936 bfd_boolean strip = FALSE;
1937
1938 if ((s->flags & SEC_LINKER_CREATED) == 0)
1939 continue;
1940
1941 /* It's OK to base decisions on the section name, because none
1942 of the dynobj section names depend upon the input files. */
1943 name = bfd_get_section_name (dynobj, s);
1944
1945 if (strncmp (name, ".rela", 5) == 0)
1946 {
1947 if (s->_raw_size == 0)
1948 {
1949 /* If we don't need this section, strip it from the
1950 output file. This is to handle .rela.bss and
1951 .rel.plt. We must create it in
1952 create_dynamic_sections, because it must be created
1953 before the linker maps input sections to output
1954 sections. The linker does that before
1955 adjust_dynamic_symbol is called, and it is that
1956 function which decides whether anything needs to go
1957 into these sections. */
1958 strip = TRUE;
1959 }
1960 else
1961 {
1962 /* We use the reloc_count field as a counter if we need
1963 to copy relocs into the output file. */
1964 s->reloc_count = 0;
1965 }
1966 }
1967 else if (s != htab->splt && s != htab->sgot)
1968 {
1969 /* It's not one of our sections, so don't allocate space. */
1970 continue;
1971 }
1972
1973 if (strip)
1974 {
1975 _bfd_strip_section_from_output (info, s);
1976 continue;
1977 }
1978
1979 /* Allocate memory for the section contents. */
1980 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
1981 Unused entries should be reclaimed before the section's contents
1982 are written out, but at the moment this does not happen. Thus in
1983 order to prevent writing out garbage, we initialise the section's
1984 contents to zero. */
1985 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
1986 if (s->contents == NULL && s->_raw_size != 0)
1987 return FALSE;
1988 }
1989
1990 if (elf_hash_table (info)->dynamic_sections_created)
1991 {
1992 /* Add some entries to the .dynamic section. We fill in the
1993 values later, in elf32_sparc_finish_dynamic_sections, but we
1994 must add the entries now so that we get the correct size for
1995 the .dynamic section. The DT_DEBUG entry is filled in by the
1996 dynamic linker and used by the debugger. */
1997 #define add_dynamic_entry(TAG, VAL) \
1998 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1999
2000 if (info->executable)
2001 {
2002 if (!add_dynamic_entry (DT_DEBUG, 0))
2003 return FALSE;
2004 }
2005
2006 if (htab->srelplt->_raw_size != 0)
2007 {
2008 if (!add_dynamic_entry (DT_PLTGOT, 0)
2009 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2010 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2011 || !add_dynamic_entry (DT_JMPREL, 0))
2012 return FALSE;
2013 }
2014
2015 if (!add_dynamic_entry (DT_RELA, 0)
2016 || !add_dynamic_entry (DT_RELASZ, 0)
2017 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2018 return FALSE;
2019
2020 /* If any dynamic relocs apply to a read-only section,
2021 then we need a DT_TEXTREL entry. */
2022 if ((info->flags & DF_TEXTREL) == 0)
2023 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2024 (PTR) info);
2025
2026 if (info->flags & DF_TEXTREL)
2027 {
2028 if (!add_dynamic_entry (DT_TEXTREL, 0))
2029 return FALSE;
2030 }
2031 }
2032 #undef add_dynamic_entry
2033
2034 return TRUE;
2035 }
2036
2037 struct elf32_sparc_section_data
2038 {
2039 struct bfd_elf_section_data elf;
2040 unsigned int do_relax;
2041 };
2042
2043 #define sec_do_relax(sec) \
2044 ((struct elf32_sparc_section_data *) elf_section_data (sec))->do_relax
2045
2046 static bfd_boolean
2047 elf32_sparc_new_section_hook (abfd, sec)
2048 bfd *abfd;
2049 asection *sec;
2050 {
2051 struct elf32_sparc_section_data *sdata;
2052 bfd_size_type amt = sizeof (*sdata);
2053
2054 sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt);
2055 if (sdata == NULL)
2056 return FALSE;
2057 sec->used_by_bfd = (PTR) sdata;
2058
2059 return _bfd_elf_new_section_hook (abfd, sec);
2060 }
2061
2062 static bfd_boolean
2063 elf32_sparc_relax_section (abfd, section, link_info, again)
2064 bfd *abfd ATTRIBUTE_UNUSED;
2065 asection *section ATTRIBUTE_UNUSED;
2066 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
2067 bfd_boolean *again;
2068 {
2069 *again = FALSE;
2070 sec_do_relax (section) = 1;
2071 return TRUE;
2072 }
2073
2074 /* Return the base VMA address which should be subtracted from real addresses
2075 when resolving @dtpoff relocation.
2076 This is PT_TLS segment p_vaddr. */
2077
2078 static bfd_vma
2079 dtpoff_base (info)
2080 struct bfd_link_info *info;
2081 {
2082 /* If tls_segment is NULL, we should have signalled an error already. */
2083 if (elf_hash_table (info)->tls_segment == NULL)
2084 return 0;
2085 return elf_hash_table (info)->tls_segment->start;
2086 }
2087
2088 /* Return the relocation value for @tpoff relocation
2089 if STT_TLS virtual address is ADDRESS. */
2090
2091 static bfd_vma
2092 tpoff (info, address)
2093 struct bfd_link_info *info;
2094 bfd_vma address;
2095 {
2096 struct elf_link_tls_segment *tls_segment
2097 = elf_hash_table (info)->tls_segment;
2098
2099 /* If tls_segment is NULL, we should have signalled an error already. */
2100 if (tls_segment == NULL)
2101 return 0;
2102 return -(align_power (tls_segment->size, tls_segment->align)
2103 + tls_segment->start - address);
2104 }
2105
2106 /* Relocate a SPARC ELF section. */
2107
2108 static bfd_boolean
2109 elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
2110 contents, relocs, local_syms, local_sections)
2111 bfd *output_bfd;
2112 struct bfd_link_info *info;
2113 bfd *input_bfd;
2114 asection *input_section;
2115 bfd_byte *contents;
2116 Elf_Internal_Rela *relocs;
2117 Elf_Internal_Sym *local_syms;
2118 asection **local_sections;
2119 {
2120 struct elf32_sparc_link_hash_table *htab;
2121 Elf_Internal_Shdr *symtab_hdr;
2122 struct elf_link_hash_entry **sym_hashes;
2123 bfd_vma *local_got_offsets;
2124 bfd_vma got_base;
2125 asection *sreloc;
2126 Elf_Internal_Rela *rel;
2127 Elf_Internal_Rela *relend;
2128
2129 if (info->relocatable)
2130 return TRUE;
2131
2132 htab = elf32_sparc_hash_table (info);
2133 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2134 sym_hashes = elf_sym_hashes (input_bfd);
2135 local_got_offsets = elf_local_got_offsets (input_bfd);
2136
2137 if (elf_hash_table (info)->hgot == NULL)
2138 got_base = 0;
2139 else
2140 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2141
2142 sreloc = elf_section_data (input_section)->sreloc;
2143
2144 rel = relocs;
2145 relend = relocs + input_section->reloc_count;
2146 for (; rel < relend; rel++)
2147 {
2148 int r_type, tls_type;
2149 reloc_howto_type *howto;
2150 unsigned long r_symndx;
2151 struct elf_link_hash_entry *h;
2152 Elf_Internal_Sym *sym;
2153 asection *sec;
2154 bfd_vma relocation, off;
2155 bfd_reloc_status_type r;
2156 bfd_boolean is_plt = FALSE;
2157 bfd_boolean unresolved_reloc;
2158
2159 r_type = ELF32_R_TYPE (rel->r_info);
2160
2161 if (r_type == R_SPARC_GNU_VTINHERIT
2162 || r_type == R_SPARC_GNU_VTENTRY)
2163 continue;
2164
2165 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2166 {
2167 bfd_set_error (bfd_error_bad_value);
2168 return FALSE;
2169 }
2170 howto = _bfd_sparc_elf_howto_table + r_type;
2171
2172 /* This is a final link. */
2173 r_symndx = ELF32_R_SYM (rel->r_info);
2174 h = NULL;
2175 sym = NULL;
2176 sec = NULL;
2177 unresolved_reloc = FALSE;
2178 if (r_symndx < symtab_hdr->sh_info)
2179 {
2180 sym = local_syms + r_symndx;
2181 sec = local_sections[r_symndx];
2182 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
2183 }
2184 else
2185 {
2186 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2187 while (h->root.type == bfd_link_hash_indirect
2188 || h->root.type == bfd_link_hash_warning)
2189 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2190
2191 relocation = 0;
2192 if (h->root.type == bfd_link_hash_defined
2193 || h->root.type == bfd_link_hash_defweak)
2194 {
2195 sec = h->root.u.def.section;
2196 if (sec->output_section == NULL)
2197 /* Set a flag that will be cleared later if we find a
2198 relocation value for this symbol. output_section
2199 is typically NULL for symbols satisfied by a shared
2200 library. */
2201 unresolved_reloc = TRUE;
2202 else
2203 relocation = (h->root.u.def.value
2204 + sec->output_section->vma
2205 + sec->output_offset);
2206 }
2207 else if (h->root.type == bfd_link_hash_undefweak)
2208 ;
2209 else if (info->shared
2210 && !info->no_undefined
2211 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2212 ;
2213 else
2214 {
2215 if (! ((*info->callbacks->undefined_symbol)
2216 (info, h->root.root.string, input_bfd,
2217 input_section, rel->r_offset,
2218 (!info->shared || info->no_undefined
2219 || ELF_ST_VISIBILITY (h->other)))))
2220 return FALSE;
2221 }
2222 }
2223
2224 switch (r_type)
2225 {
2226 case R_SPARC_GOT10:
2227 case R_SPARC_GOT13:
2228 case R_SPARC_GOT22:
2229 /* Relocation is to the entry for this symbol in the global
2230 offset table. */
2231 if (htab->sgot == NULL)
2232 abort ();
2233
2234 if (h != NULL)
2235 {
2236 bfd_boolean dyn;
2237
2238 off = h->got.offset;
2239 BFD_ASSERT (off != (bfd_vma) -1);
2240 dyn = elf_hash_table (info)->dynamic_sections_created;
2241
2242 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
2243 || (info->shared
2244 && (info->symbolic
2245 || h->dynindx == -1
2246 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
2247 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
2248 {
2249 /* This is actually a static link, or it is a
2250 -Bsymbolic link and the symbol is defined
2251 locally, or the symbol was forced to be local
2252 because of a version file. We must initialize
2253 this entry in the global offset table. Since the
2254 offset must always be a multiple of 4, we use the
2255 least significant bit to record whether we have
2256 initialized it already.
2257
2258 When doing a dynamic link, we create a .rela.got
2259 relocation entry to initialize the value. This
2260 is done in the finish_dynamic_symbol routine. */
2261 if ((off & 1) != 0)
2262 off &= ~1;
2263 else
2264 {
2265 bfd_put_32 (output_bfd, relocation,
2266 htab->sgot->contents + off);
2267 h->got.offset |= 1;
2268 }
2269 }
2270 else
2271 unresolved_reloc = FALSE;
2272 }
2273 else
2274 {
2275 BFD_ASSERT (local_got_offsets != NULL
2276 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2277
2278 off = local_got_offsets[r_symndx];
2279
2280 /* The offset must always be a multiple of 4. We use
2281 the least significant bit to record whether we have
2282 already processed this entry. */
2283 if ((off & 1) != 0)
2284 off &= ~1;
2285 else
2286 {
2287
2288 if (info->shared)
2289 {
2290 asection *s;
2291 Elf_Internal_Rela outrel;
2292 bfd_byte *loc;
2293
2294 /* We need to generate a R_SPARC_RELATIVE reloc
2295 for the dynamic linker. */
2296 s = htab->srelgot;
2297 BFD_ASSERT (s != NULL);
2298
2299 outrel.r_offset = (htab->sgot->output_section->vma
2300 + htab->sgot->output_offset
2301 + off);
2302 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2303 outrel.r_addend = relocation;
2304 relocation = 0;
2305 loc = s->contents;
2306 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
2307 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2308 }
2309
2310 bfd_put_32 (output_bfd, relocation,
2311 htab->sgot->contents + off);
2312 local_got_offsets[r_symndx] |= 1;
2313 }
2314 }
2315 relocation = htab->sgot->output_offset + off - got_base;
2316 break;
2317
2318 case R_SPARC_PLT32:
2319 if (h == NULL || h->plt.offset == (bfd_vma) -1)
2320 {
2321 r_type = R_SPARC_32;
2322 goto r_sparc_plt32;
2323 }
2324 /* Fall through. */
2325 case R_SPARC_WPLT30:
2326 r_sparc_wplt30:
2327 /* Relocation is to the entry for this symbol in the
2328 procedure linkage table. */
2329
2330 /* The Solaris native assembler will generate a WPLT30 reloc
2331 for a local symbol if you assemble a call from one
2332 section to another when using -K pic. We treat it as
2333 WDISP30. */
2334 if (h == NULL)
2335 break;
2336
2337 if (h->plt.offset == (bfd_vma) -1)
2338 {
2339 /* We didn't make a PLT entry for this symbol. This
2340 happens when statically linking PIC code, or when
2341 using -Bsymbolic. */
2342 break;
2343 }
2344
2345 if (htab->splt == NULL)
2346 abort ();
2347
2348 relocation = (htab->splt->output_section->vma
2349 + htab->splt->output_offset
2350 + h->plt.offset);
2351 unresolved_reloc = FALSE;
2352 if (r_type == R_SPARC_PLT32)
2353 {
2354 r_type = R_SPARC_32;
2355 is_plt = TRUE;
2356 goto r_sparc_plt32;
2357 }
2358 break;
2359
2360 case R_SPARC_PC10:
2361 case R_SPARC_PC22:
2362 if (h != NULL
2363 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2364 break;
2365 /* Fall through. */
2366 case R_SPARC_DISP8:
2367 case R_SPARC_DISP16:
2368 case R_SPARC_DISP32:
2369 case R_SPARC_WDISP30:
2370 case R_SPARC_WDISP22:
2371 case R_SPARC_WDISP19:
2372 case R_SPARC_WDISP16:
2373 case R_SPARC_8:
2374 case R_SPARC_16:
2375 case R_SPARC_32:
2376 case R_SPARC_HI22:
2377 case R_SPARC_22:
2378 case R_SPARC_13:
2379 case R_SPARC_LO10:
2380 case R_SPARC_UA16:
2381 case R_SPARC_UA32:
2382 r_sparc_plt32:
2383 /* r_symndx will be zero only for relocs against symbols
2384 from removed linkonce sections, or sections discarded by
2385 a linker script. */
2386 if (r_symndx == 0
2387 || (input_section->flags & SEC_ALLOC) == 0)
2388 break;
2389
2390 if ((info->shared
2391 && (! howto->pc_relative
2392 || (h != NULL
2393 && h->dynindx != -1
2394 && (! info->symbolic
2395 || (h->elf_link_hash_flags
2396 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2397 || (!info->shared
2398 && h != NULL
2399 && h->dynindx != -1
2400 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2401 && (((h->elf_link_hash_flags
2402 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2403 && (h->elf_link_hash_flags
2404 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2405 || h->root.type == bfd_link_hash_undefweak
2406 || h->root.type == bfd_link_hash_undefined)))
2407 {
2408 Elf_Internal_Rela outrel;
2409 bfd_byte *loc;
2410 bfd_boolean skip, relocate = FALSE;
2411
2412 /* When generating a shared object, these relocations
2413 are copied into the output file to be resolved at run
2414 time. */
2415
2416 BFD_ASSERT (sreloc != NULL);
2417
2418 skip = FALSE;
2419
2420 outrel.r_offset =
2421 _bfd_elf_section_offset (output_bfd, info, input_section,
2422 rel->r_offset);
2423 if (outrel.r_offset == (bfd_vma) -1)
2424 skip = TRUE;
2425 else if (outrel.r_offset == (bfd_vma) -2)
2426 skip = TRUE, relocate = TRUE;
2427 outrel.r_offset += (input_section->output_section->vma
2428 + input_section->output_offset);
2429
2430 /* Optimize unaligned reloc usage now that we know where
2431 it finally resides. */
2432 switch (r_type)
2433 {
2434 case R_SPARC_16:
2435 if (outrel.r_offset & 1)
2436 r_type = R_SPARC_UA16;
2437 break;
2438 case R_SPARC_UA16:
2439 if (!(outrel.r_offset & 1))
2440 r_type = R_SPARC_16;
2441 break;
2442 case R_SPARC_32:
2443 if (outrel.r_offset & 3)
2444 r_type = R_SPARC_UA32;
2445 break;
2446 case R_SPARC_UA32:
2447 if (!(outrel.r_offset & 3))
2448 r_type = R_SPARC_32;
2449 break;
2450 case R_SPARC_DISP8:
2451 case R_SPARC_DISP16:
2452 case R_SPARC_DISP32:
2453 /* If the symbol is not dynamic, we should not keep
2454 a dynamic relocation. But an .rela.* slot has been
2455 allocated for it, output R_SPARC_NONE.
2456 FIXME: Add code tracking needed dynamic relocs as
2457 e.g. i386 has. */
2458 if (h->dynindx == -1)
2459 skip = TRUE, relocate = TRUE;
2460 break;
2461 }
2462
2463 if (skip)
2464 memset (&outrel, 0, sizeof outrel);
2465 /* h->dynindx may be -1 if the symbol was marked to
2466 become local. */
2467 else if (h != NULL && ! is_plt
2468 && ((! info->symbolic && h->dynindx != -1)
2469 || (h->elf_link_hash_flags
2470 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2471 {
2472 BFD_ASSERT (h->dynindx != -1);
2473 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2474 outrel.r_addend = rel->r_addend;
2475 }
2476 else
2477 {
2478 if (r_type == R_SPARC_32)
2479 {
2480 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2481 outrel.r_addend = relocation + rel->r_addend;
2482 }
2483 else
2484 {
2485 long indx;
2486
2487 if (is_plt)
2488 sec = htab->splt;
2489 else if (h == NULL)
2490 sec = local_sections[r_symndx];
2491 else
2492 {
2493 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2494 || (h->root.type
2495 == bfd_link_hash_defweak));
2496 sec = h->root.u.def.section;
2497 }
2498 if (sec != NULL && bfd_is_abs_section (sec))
2499 indx = 0;
2500 else if (sec == NULL || sec->owner == NULL)
2501 {
2502 bfd_set_error (bfd_error_bad_value);
2503 return FALSE;
2504 }
2505 else
2506 {
2507 asection *osec;
2508
2509 osec = sec->output_section;
2510 indx = elf_section_data (osec)->dynindx;
2511
2512 /* FIXME: we really should be able to link non-pic
2513 shared libraries. */
2514 if (indx == 0)
2515 {
2516 BFD_FAIL ();
2517 (*_bfd_error_handler)
2518 (_("%s: probably compiled without -fPIC?"),
2519 bfd_archive_filename (input_bfd));
2520 bfd_set_error (bfd_error_bad_value);
2521 return FALSE;
2522 }
2523 }
2524
2525 outrel.r_info = ELF32_R_INFO (indx, r_type);
2526 outrel.r_addend = relocation + rel->r_addend;
2527 }
2528 }
2529
2530 loc = sreloc->contents;
2531 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2532 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2533
2534 /* This reloc will be computed at runtime, so there's no
2535 need to do anything now. */
2536 if (! relocate)
2537 continue;
2538 }
2539 break;
2540
2541 case R_SPARC_TLS_GD_HI22:
2542 if (! elf32_sparc_tdata (input_bfd)->has_tlsgd)
2543 {
2544 /* R_SPARC_REV32 used the same reloc number as
2545 R_SPARC_TLS_GD_HI22. */
2546 r_type = R_SPARC_REV32;
2547 break;
2548 }
2549 /* Fall through */
2550
2551 case R_SPARC_TLS_GD_LO10:
2552 case R_SPARC_TLS_IE_HI22:
2553 case R_SPARC_TLS_IE_LO10:
2554 r_type = elf32_sparc_tls_transition (info, input_bfd, r_type,
2555 h == NULL);
2556 tls_type = GOT_UNKNOWN;
2557 if (h == NULL && local_got_offsets)
2558 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2559 else if (h != NULL)
2560 {
2561 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2562 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
2563 switch (ELF32_R_TYPE (rel->r_info))
2564 {
2565 case R_SPARC_TLS_GD_HI22:
2566 case R_SPARC_TLS_IE_HI22:
2567 r_type = R_SPARC_TLS_LE_HIX22;
2568 break;
2569 default:
2570 r_type = R_SPARC_TLS_LE_LOX10;
2571 break;
2572 }
2573 }
2574 if (tls_type == GOT_TLS_IE)
2575 switch (r_type)
2576 {
2577 case R_SPARC_TLS_GD_HI22:
2578 r_type = R_SPARC_TLS_IE_HI22;
2579 break;
2580 case R_SPARC_TLS_GD_LO10:
2581 r_type = R_SPARC_TLS_IE_LO10;
2582 break;
2583 }
2584
2585 if (r_type == R_SPARC_TLS_LE_HIX22)
2586 {
2587 relocation = tpoff (info, relocation);
2588 break;
2589 }
2590 if (r_type == R_SPARC_TLS_LE_LOX10)
2591 {
2592 /* Change add into xor. */
2593 relocation = tpoff (info, relocation);
2594 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
2595 contents + rel->r_offset)
2596 | 0x80182000), contents + rel->r_offset);
2597 break;
2598 }
2599
2600 if (h != NULL)
2601 {
2602 off = h->got.offset;
2603 h->got.offset |= 1;
2604 }
2605 else
2606 {
2607 BFD_ASSERT (local_got_offsets != NULL);
2608 off = local_got_offsets[r_symndx];
2609 local_got_offsets[r_symndx] |= 1;
2610 }
2611
2612 r_sparc_tlsldm:
2613 if (htab->sgot == NULL)
2614 abort ();
2615
2616 if ((off & 1) != 0)
2617 off &= ~1;
2618 else
2619 {
2620 Elf_Internal_Rela outrel;
2621 Elf32_External_Rela *loc;
2622 int dr_type, indx;
2623
2624 if (htab->srelgot == NULL)
2625 abort ();
2626
2627 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
2628 outrel.r_offset = (htab->sgot->output_section->vma
2629 + htab->sgot->output_offset + off);
2630 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2631 if (r_type == R_SPARC_TLS_IE_HI22
2632 || r_type == R_SPARC_TLS_IE_LO10)
2633 dr_type = R_SPARC_TLS_TPOFF32;
2634 else
2635 dr_type = R_SPARC_TLS_DTPMOD32;
2636 if (dr_type == R_SPARC_TLS_TPOFF32 && indx == 0)
2637 outrel.r_addend = relocation - dtpoff_base (info);
2638 else
2639 outrel.r_addend = 0;
2640 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2641 loc = (Elf32_External_Rela *) htab->srelgot->contents;
2642 loc += htab->srelgot->reloc_count++;
2643 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2644 (bfd_byte *) loc);
2645
2646 if (r_type == R_SPARC_TLS_GD_HI22
2647 || r_type == R_SPARC_TLS_GD_LO10)
2648 {
2649 if (indx == 0)
2650 {
2651 BFD_ASSERT (! unresolved_reloc);
2652 bfd_put_32 (output_bfd,
2653 relocation - dtpoff_base (info),
2654 htab->sgot->contents + off + 4);
2655 }
2656 else
2657 {
2658 bfd_put_32 (output_bfd, 0,
2659 htab->sgot->contents + off + 4);
2660 outrel.r_info = ELF32_R_INFO (indx,
2661 R_SPARC_TLS_DTPOFF32);
2662 outrel.r_offset += 4;
2663 htab->srelgot->reloc_count++;
2664 loc++;
2665 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2666 (bfd_byte *) loc);
2667 }
2668 }
2669 else if (dr_type == R_SPARC_TLS_DTPMOD32)
2670 {
2671 bfd_put_32 (output_bfd, 0,
2672 htab->sgot->contents + off + 4);
2673 }
2674 }
2675
2676 if (off >= (bfd_vma) -2)
2677 abort ();
2678
2679 relocation = htab->sgot->output_offset + off - got_base;
2680 unresolved_reloc = FALSE;
2681 howto = _bfd_sparc_elf_howto_table + r_type;
2682 break;
2683
2684 case R_SPARC_TLS_LDM_HI22:
2685 case R_SPARC_TLS_LDM_LO10:
2686 if (! info->shared)
2687 {
2688 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2689 continue;
2690 }
2691 off = htab->tls_ldm_got.offset;
2692 htab->tls_ldm_got.offset |= 1;
2693 goto r_sparc_tlsldm;
2694
2695 case R_SPARC_TLS_LDO_HIX22:
2696 case R_SPARC_TLS_LDO_LOX10:
2697 if (info->shared)
2698 relocation -= dtpoff_base (info);
2699 else
2700 relocation = tpoff (info, relocation);
2701 break;
2702
2703 case R_SPARC_TLS_LE_HIX22:
2704 case R_SPARC_TLS_LE_LOX10:
2705 if (info->shared)
2706 {
2707 Elf_Internal_Rela outrel;
2708 bfd_boolean skip, relocate = FALSE;
2709
2710 BFD_ASSERT (sreloc != NULL);
2711 skip = FALSE;
2712 outrel.r_offset =
2713 _bfd_elf_section_offset (output_bfd, info, input_section,
2714 rel->r_offset);
2715 if (outrel.r_offset == (bfd_vma) -1)
2716 skip = TRUE;
2717 else if (outrel.r_offset == (bfd_vma) -2)
2718 skip = TRUE, relocate = TRUE;
2719 outrel.r_offset += (input_section->output_section->vma
2720 + input_section->output_offset);
2721 if (skip)
2722 memset (&outrel, 0, sizeof outrel);
2723 else
2724 {
2725 outrel.r_info = ELF32_R_INFO (0, r_type);
2726 outrel.r_addend = relocation - dtpoff_base (info)
2727 + rel->r_addend;
2728 }
2729
2730 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2731 (bfd_byte *) (((Elf32_External_Rela *)
2732 sreloc->contents)
2733 + sreloc->reloc_count));
2734 ++sreloc->reloc_count;
2735 continue;
2736 }
2737 relocation = tpoff (info, relocation);
2738 break;
2739
2740 case R_SPARC_TLS_LDM_CALL:
2741 if (! info->shared)
2742 {
2743 /* mov %g0, %o0 */
2744 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
2745 continue;
2746 }
2747 /* Fall through */
2748
2749 case R_SPARC_TLS_GD_CALL:
2750 tls_type = GOT_UNKNOWN;
2751 if (h == NULL && local_got_offsets)
2752 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2753 else if (h != NULL)
2754 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2755 if (! info->shared
2756 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
2757 {
2758 bfd_vma insn;
2759
2760 if (!info->shared && (h == NULL || h->dynindx == -1))
2761 {
2762 /* GD -> LE */
2763 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2764 continue;
2765 }
2766
2767 /* GD -> IE */
2768 if (rel + 1 < relend
2769 && ELF32_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
2770 && rel[1].r_offset == rel->r_offset + 4
2771 && ELF32_R_SYM (rel[1].r_info) == r_symndx
2772 && (((insn = bfd_get_32 (input_bfd,
2773 contents + rel[1].r_offset))
2774 >> 25) & 0x1f) == 8)
2775 {
2776 /* We have
2777 call __tls_get_addr, %tgd_call(foo)
2778 add %reg1, %reg2, %o0, %tgd_add(foo)
2779 and change it into IE:
2780 ld [%reg1 + %reg2], %o0, %tie_ld(foo)
2781 add %g7, %o0, %o0, %tie_add(foo).
2782 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
2783 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2. */
2784 bfd_put_32 (output_bfd, insn | 0xc0000000,
2785 contents + rel->r_offset);
2786 bfd_put_32 (output_bfd, 0x9001c008,
2787 contents + rel->r_offset + 4);
2788 rel++;
2789 continue;
2790 }
2791
2792 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
2793 continue;
2794 }
2795
2796 h = (struct elf_link_hash_entry *)
2797 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
2798 FALSE, TRUE);
2799 BFD_ASSERT (h != NULL);
2800 r_type = R_SPARC_WPLT30;
2801 howto = _bfd_sparc_elf_howto_table + r_type;
2802 goto r_sparc_wplt30;
2803
2804 case R_SPARC_TLS_GD_ADD:
2805 tls_type = GOT_UNKNOWN;
2806 if (h == NULL && local_got_offsets)
2807 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2808 else if (h != NULL)
2809 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2810 if (! info->shared || tls_type == GOT_TLS_IE)
2811 {
2812 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
2813 changed into IE:
2814 ld [%reg1 + %reg2], %reg3, %tie_ld(foo)
2815 or LE:
2816 add %g7, %reg2, %reg3. */
2817 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2818 if ((h != NULL && h->dynindx != -1) || info->shared)
2819 relocation = insn | 0xc0000000;
2820 else
2821 relocation = (insn & ~0x7c000) | 0x1c000;
2822 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2823 }
2824 continue;
2825
2826 case R_SPARC_TLS_LDM_ADD:
2827 if (! info->shared)
2828 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2829 continue;
2830
2831 case R_SPARC_TLS_LDO_ADD:
2832 if (! info->shared)
2833 {
2834 /* Change rs1 into %g7. */
2835 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2836 insn = (insn & ~0x7c000) | 0x1c000;
2837 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2838 }
2839 continue;
2840
2841 case R_SPARC_TLS_IE_LD:
2842 case R_SPARC_TLS_IE_LDX:
2843 if (! info->shared && (h == NULL || h->dynindx == -1))
2844 {
2845 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2846 int rs2 = insn & 0x1f;
2847 int rd = (insn >> 25) & 0x1f;
2848
2849 if (rs2 == rd)
2850 relocation = SPARC_NOP;
2851 else
2852 relocation = 0x80100000 | (insn & 0x3e00001f);
2853 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2854 }
2855 continue;
2856
2857 case R_SPARC_TLS_IE_ADD:
2858 /* Totally useless relocation. */
2859 continue;
2860
2861 case R_SPARC_TLS_DTPOFF32:
2862 relocation -= dtpoff_base (info);
2863 break;
2864
2865 default:
2866 break;
2867 }
2868
2869 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2870 because such sections are not SEC_ALLOC and thus ld.so will
2871 not process them. */
2872 if (unresolved_reloc
2873 && !((input_section->flags & SEC_DEBUGGING) != 0
2874 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
2875 (*_bfd_error_handler)
2876 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
2877 bfd_archive_filename (input_bfd),
2878 bfd_get_section_name (input_bfd, input_section),
2879 (long) rel->r_offset,
2880 h->root.root.string);
2881
2882 r = bfd_reloc_continue;
2883 if (r_type == R_SPARC_WDISP16)
2884 {
2885 bfd_vma x;
2886
2887 relocation += rel->r_addend;
2888 relocation -= (input_section->output_section->vma
2889 + input_section->output_offset);
2890 relocation -= rel->r_offset;
2891
2892 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2893 x |= ((((relocation >> 2) & 0xc000) << 6)
2894 | ((relocation >> 2) & 0x3fff));
2895 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2896
2897 if ((bfd_signed_vma) relocation < - 0x40000
2898 || (bfd_signed_vma) relocation > 0x3ffff)
2899 r = bfd_reloc_overflow;
2900 else
2901 r = bfd_reloc_ok;
2902 }
2903 else if (r_type == R_SPARC_REV32)
2904 {
2905 bfd_vma x;
2906
2907 relocation = relocation + rel->r_addend;
2908
2909 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2910 x = x + relocation;
2911 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
2912 r = bfd_reloc_ok;
2913 }
2914 else if (r_type == R_SPARC_TLS_LDO_HIX22
2915 || r_type == R_SPARC_TLS_LE_HIX22)
2916 {
2917 bfd_vma x;
2918
2919 relocation += rel->r_addend;
2920 relocation = relocation ^ 0xffffffff;
2921
2922 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2923 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
2924 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2925 r = bfd_reloc_ok;
2926 }
2927 else if (r_type == R_SPARC_TLS_LDO_LOX10
2928 || r_type == R_SPARC_TLS_LE_LOX10)
2929 {
2930 bfd_vma x;
2931
2932 relocation += rel->r_addend;
2933 relocation = (relocation & 0x3ff) | 0x1c00;
2934
2935 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2936 x = (x & ~(bfd_vma) 0x1fff) | relocation;
2937 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2938
2939 r = bfd_reloc_ok;
2940 }
2941 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
2942 && sec_do_relax (input_section)
2943 && rel->r_offset + 4 < input_section->_raw_size)
2944 {
2945 #define G0 0
2946 #define O7 15
2947 #define XCC (2 << 20)
2948 #define COND(x) (((x)&0xf)<<25)
2949 #define CONDA COND(0x8)
2950 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2951 #define INSN_BA (F2(0,2) | CONDA)
2952 #define INSN_OR F3(2, 0x2, 0)
2953 #define INSN_NOP F2(0,4)
2954
2955 bfd_vma x, y;
2956
2957 /* If the instruction is a call with either:
2958 restore
2959 arithmetic instruction with rd == %o7
2960 where rs1 != %o7 and rs2 if it is register != %o7
2961 then we can optimize if the call destination is near
2962 by changing the call into a branch always. */
2963 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2964 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
2965 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
2966 {
2967 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
2968 || ((y & OP3(0x28)) == 0 /* arithmetic */
2969 && (y & RD(~0)) == RD(O7)))
2970 && (y & RS1(~0)) != RS1(O7)
2971 && ((y & F3I(~0))
2972 || (y & RS2(~0)) != RS2(O7)))
2973 {
2974 bfd_vma reloc;
2975
2976 reloc = relocation + rel->r_addend - rel->r_offset;
2977 reloc -= (input_section->output_section->vma
2978 + input_section->output_offset);
2979
2980 /* Ensure the reloc fits into simm22. */
2981 if ((reloc & 3) == 0
2982 && ((reloc & ~(bfd_vma)0x7fffff) == 0
2983 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
2984 {
2985 reloc >>= 2;
2986
2987 /* Check whether it fits into simm19 on v9. */
2988 if (((reloc & 0x3c0000) == 0
2989 || (reloc & 0x3c0000) == 0x3c0000)
2990 && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
2991 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
2992 else
2993 x = INSN_BA | (reloc & 0x3fffff); /* ba */
2994 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2995 r = bfd_reloc_ok;
2996 if (rel->r_offset >= 4
2997 && (y & (0xffffffff ^ RS1(~0)))
2998 == (INSN_OR | RD(O7) | RS2(G0)))
2999 {
3000 bfd_vma z;
3001 unsigned int reg;
3002
3003 z = bfd_get_32 (input_bfd,
3004 contents + rel->r_offset - 4);
3005 if ((z & (0xffffffff ^ RD(~0)))
3006 != (INSN_OR | RS1(O7) | RS2(G0)))
3007 break;
3008
3009 /* The sequence was
3010 or %o7, %g0, %rN
3011 call foo
3012 or %rN, %g0, %o7
3013
3014 If call foo was replaced with ba, replace
3015 or %rN, %g0, %o7 with nop. */
3016
3017 reg = (y & RS1(~0)) >> 14;
3018 if (reg != ((z & RD(~0)) >> 25)
3019 || reg == G0 || reg == O7)
3020 break;
3021
3022 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
3023 contents + rel->r_offset + 4);
3024 }
3025
3026 }
3027 }
3028 }
3029 }
3030
3031 if (r == bfd_reloc_continue)
3032 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3033 contents, rel->r_offset,
3034 relocation, rel->r_addend);
3035
3036 if (r != bfd_reloc_ok)
3037 {
3038 switch (r)
3039 {
3040 default:
3041 case bfd_reloc_outofrange:
3042 abort ();
3043 case bfd_reloc_overflow:
3044 {
3045 const char *name;
3046
3047 if (h != NULL)
3048 name = h->root.root.string;
3049 else
3050 {
3051 name = bfd_elf_string_from_elf_section (input_bfd,
3052 symtab_hdr->sh_link,
3053 sym->st_name);
3054 if (name == NULL)
3055 return FALSE;
3056 if (*name == '\0')
3057 name = bfd_section_name (input_bfd, sec);
3058 }
3059 if (! ((*info->callbacks->reloc_overflow)
3060 (info, name, howto->name, (bfd_vma) 0,
3061 input_bfd, input_section, rel->r_offset)))
3062 return FALSE;
3063 }
3064 break;
3065 }
3066 }
3067 }
3068
3069 return TRUE;
3070 }
3071
3072 /* Finish up dynamic symbol handling. We set the contents of various
3073 dynamic sections here. */
3074
3075 static bfd_boolean
3076 elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym)
3077 bfd *output_bfd;
3078 struct bfd_link_info *info;
3079 struct elf_link_hash_entry *h;
3080 Elf_Internal_Sym *sym;
3081 {
3082 bfd *dynobj;
3083 struct elf32_sparc_link_hash_table *htab;
3084
3085 htab = elf32_sparc_hash_table (info);
3086 dynobj = htab->elf.dynobj;
3087
3088 if (h->plt.offset != (bfd_vma) -1)
3089 {
3090 asection *splt;
3091 asection *srela;
3092 Elf_Internal_Rela rela;
3093 bfd_byte *loc;
3094
3095 /* This symbol has an entry in the procedure linkage table. Set
3096 it up. */
3097
3098 BFD_ASSERT (h->dynindx != -1);
3099
3100 splt = htab->splt;
3101 srela = htab->srelplt;
3102 BFD_ASSERT (splt != NULL && srela != NULL);
3103
3104 /* Fill in the entry in the procedure linkage table. */
3105 bfd_put_32 (output_bfd,
3106 PLT_ENTRY_WORD0 + h->plt.offset,
3107 splt->contents + h->plt.offset);
3108 bfd_put_32 (output_bfd,
3109 (PLT_ENTRY_WORD1
3110 + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)),
3111 splt->contents + h->plt.offset + 4);
3112 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3113 splt->contents + h->plt.offset + 8);
3114
3115 /* Fill in the entry in the .rela.plt section. */
3116 rela.r_offset = (splt->output_section->vma
3117 + splt->output_offset
3118 + h->plt.offset);
3119 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
3120 rela.r_addend = 0;
3121 loc = srela->contents;
3122 loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela);
3123 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3124
3125 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3126 {
3127 /* Mark the symbol as undefined, rather than as defined in
3128 the .plt section. Leave the value alone. */
3129 sym->st_shndx = SHN_UNDEF;
3130 /* If the symbol is weak, we do need to clear the value.
3131 Otherwise, the PLT entry would provide a definition for
3132 the symbol even if the symbol wasn't defined anywhere,
3133 and so the symbol would never be NULL. */
3134 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
3135 == 0)
3136 sym->st_value = 0;
3137 }
3138 }
3139
3140 if (h->got.offset != (bfd_vma) -1
3141 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_GD
3142 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_IE)
3143 {
3144 asection *sgot;
3145 asection *srela;
3146 Elf_Internal_Rela rela;
3147 bfd_byte *loc;
3148
3149 /* This symbol has an entry in the global offset table. Set it
3150 up. */
3151
3152 sgot = htab->sgot;
3153 srela = htab->srelgot;
3154 BFD_ASSERT (sgot != NULL && srela != NULL);
3155
3156 rela.r_offset = (sgot->output_section->vma
3157 + sgot->output_offset
3158 + (h->got.offset &~ (bfd_vma) 1));
3159
3160 /* If this is a -Bsymbolic link, and the symbol is defined
3161 locally, we just want to emit a RELATIVE reloc. Likewise if
3162 the symbol was forced to be local because of a version file.
3163 The entry in the global offset table will already have been
3164 initialized in the relocate_section function. */
3165 if (info->shared
3166 && (info->symbolic || h->dynindx == -1)
3167 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3168 {
3169 asection *sec = h->root.u.def.section;
3170 rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
3171 rela.r_addend = (h->root.u.def.value
3172 + sec->output_section->vma
3173 + sec->output_offset);
3174 }
3175 else
3176 {
3177 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
3178 rela.r_addend = 0;
3179 }
3180
3181 bfd_put_32 (output_bfd, (bfd_vma) 0,
3182 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
3183 loc = srela->contents;
3184 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3185 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3186 }
3187
3188 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3189 {
3190 asection *s;
3191 Elf_Internal_Rela rela;
3192 bfd_byte *loc;
3193
3194 /* This symbols needs a copy reloc. Set it up. */
3195
3196 BFD_ASSERT (h->dynindx != -1);
3197
3198 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3199 ".rela.bss");
3200 BFD_ASSERT (s != NULL);
3201
3202 rela.r_offset = (h->root.u.def.value
3203 + h->root.u.def.section->output_section->vma
3204 + h->root.u.def.section->output_offset);
3205 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY);
3206 rela.r_addend = 0;
3207 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3208 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3209 }
3210
3211 /* Mark some specially defined symbols as absolute. */
3212 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3213 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3214 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3215 sym->st_shndx = SHN_ABS;
3216
3217 return TRUE;
3218 }
3219
3220 /* Finish up the dynamic sections. */
3221
3222 static bfd_boolean
3223 elf32_sparc_finish_dynamic_sections (output_bfd, info)
3224 bfd *output_bfd;
3225 struct bfd_link_info *info;
3226 {
3227 bfd *dynobj;
3228 asection *sdyn;
3229 struct elf32_sparc_link_hash_table *htab;
3230
3231 htab = elf32_sparc_hash_table (info);
3232 dynobj = htab->elf.dynobj;
3233
3234 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3235
3236 if (elf_hash_table (info)->dynamic_sections_created)
3237 {
3238 asection *splt;
3239 Elf32_External_Dyn *dyncon, *dynconend;
3240
3241 splt = bfd_get_section_by_name (dynobj, ".plt");
3242 BFD_ASSERT (splt != NULL && sdyn != NULL);
3243
3244 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3245 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3246 for (; dyncon < dynconend; dyncon++)
3247 {
3248 Elf_Internal_Dyn dyn;
3249 const char *name;
3250 bfd_boolean size;
3251
3252 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3253
3254 switch (dyn.d_tag)
3255 {
3256 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
3257 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
3258 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
3259 default: name = NULL; size = FALSE; break;
3260 }
3261
3262 if (name != NULL)
3263 {
3264 asection *s;
3265
3266 s = bfd_get_section_by_name (output_bfd, name);
3267 if (s == NULL)
3268 dyn.d_un.d_val = 0;
3269 else
3270 {
3271 if (! size)
3272 dyn.d_un.d_ptr = s->vma;
3273 else
3274 {
3275 if (s->_cooked_size != 0)
3276 dyn.d_un.d_val = s->_cooked_size;
3277 else
3278 dyn.d_un.d_val = s->_raw_size;
3279 }
3280 }
3281 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3282 }
3283 }
3284
3285 /* Clear the first four entries in the procedure linkage table,
3286 and put a nop in the last four bytes. */
3287 if (splt->_raw_size > 0)
3288 {
3289 memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
3290 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
3291 splt->contents + splt->_raw_size - 4);
3292 }
3293
3294 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3295 PLT_ENTRY_SIZE;
3296 }
3297
3298 /* Set the first entry in the global offset table to the address of
3299 the dynamic section. */
3300 if (htab->sgot && htab->sgot->_raw_size > 0)
3301 {
3302 if (sdyn == NULL)
3303 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents);
3304 else
3305 bfd_put_32 (output_bfd,
3306 sdyn->output_section->vma + sdyn->output_offset,
3307 htab->sgot->contents);
3308 }
3309
3310 if (htab->sgot)
3311 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3312
3313 return TRUE;
3314 }
3315 \f
3316 /* Functions for dealing with the e_flags field.
3317
3318 We don't define set_private_flags or copy_private_bfd_data because
3319 the only currently defined values are based on the bfd mach number,
3320 so we use the latter instead and defer setting e_flags until the
3321 file is written out. */
3322
3323 /* Merge backend specific data from an object file to the output
3324 object file when linking. */
3325
3326 static bfd_boolean
3327 elf32_sparc_merge_private_bfd_data (ibfd, obfd)
3328 bfd *ibfd;
3329 bfd *obfd;
3330 {
3331 bfd_boolean error;
3332 /* FIXME: This should not be static. */
3333 static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
3334
3335 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3336 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3337 return TRUE;
3338
3339 error = FALSE;
3340
3341 if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9)
3342 {
3343 error = TRUE;
3344 (*_bfd_error_handler)
3345 (_("%s: compiled for a 64 bit system and target is 32 bit"),
3346 bfd_archive_filename (ibfd));
3347 }
3348 else if ((ibfd->flags & DYNAMIC) == 0)
3349 {
3350 if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3351 bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
3352 }
3353
3354 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
3355 != previous_ibfd_e_flags)
3356 && previous_ibfd_e_flags != (unsigned long) -1)
3357 {
3358 (*_bfd_error_handler)
3359 (_("%s: linking little endian files with big endian files"),
3360 bfd_archive_filename (ibfd));
3361 error = TRUE;
3362 }
3363 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
3364
3365 if (error)
3366 {
3367 bfd_set_error (bfd_error_bad_value);
3368 return FALSE;
3369 }
3370
3371 return TRUE;
3372 }
3373 \f
3374 /* Set the right machine number. */
3375
3376 static bfd_boolean
3377 elf32_sparc_object_p (abfd)
3378 bfd *abfd;
3379 {
3380 /* Allocate our special target data. */
3381 struct elf32_sparc_obj_tdata *new_tdata;
3382 bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
3383 new_tdata = bfd_zalloc (abfd, amt);
3384 if (new_tdata == NULL)
3385 return FALSE;
3386 new_tdata->root = *abfd->tdata.elf_obj_data;
3387 abfd->tdata.any = new_tdata;
3388
3389 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
3390 {
3391 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
3392 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3393 bfd_mach_sparc_v8plusb);
3394 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
3395 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3396 bfd_mach_sparc_v8plusa);
3397 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
3398 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3399 bfd_mach_sparc_v8plus);
3400 else
3401 return FALSE;
3402 }
3403 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
3404 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3405 bfd_mach_sparc_sparclite_le);
3406 else
3407 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
3408 }
3409
3410 /* The final processing done just before writing out the object file.
3411 We need to set the e_machine field appropriately. */
3412
3413 static void
3414 elf32_sparc_final_write_processing (abfd, linker)
3415 bfd *abfd;
3416 bfd_boolean linker ATTRIBUTE_UNUSED;
3417 {
3418 switch (bfd_get_mach (abfd))
3419 {
3420 case bfd_mach_sparc :
3421 break; /* nothing to do */
3422 case bfd_mach_sparc_v8plus :
3423 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3424 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3425 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
3426 break;
3427 case bfd_mach_sparc_v8plusa :
3428 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3429 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3430 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
3431 break;
3432 case bfd_mach_sparc_v8plusb :
3433 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3434 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3435 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1
3436 | EF_SPARC_SUN_US3;
3437 break;
3438 case bfd_mach_sparc_sparclite_le :
3439 elf_elfheader (abfd)->e_machine = EM_SPARC;
3440 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
3441 break;
3442 default :
3443 abort ();
3444 break;
3445 }
3446 }
3447
3448 static enum elf_reloc_type_class
3449 elf32_sparc_reloc_type_class (rela)
3450 const Elf_Internal_Rela *rela;
3451 {
3452 switch ((int) ELF32_R_TYPE (rela->r_info))
3453 {
3454 case R_SPARC_RELATIVE:
3455 return reloc_class_relative;
3456 case R_SPARC_JMP_SLOT:
3457 return reloc_class_plt;
3458 case R_SPARC_COPY:
3459 return reloc_class_copy;
3460 default:
3461 return reloc_class_normal;
3462 }
3463 }
3464 \f
3465 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
3466 #define TARGET_BIG_NAME "elf32-sparc"
3467 #define ELF_ARCH bfd_arch_sparc
3468 #define ELF_MACHINE_CODE EM_SPARC
3469 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
3470 #define ELF_MAXPAGESIZE 0x10000
3471
3472 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
3473 #define bfd_elf32_bfd_link_hash_table_create \
3474 elf32_sparc_link_hash_table_create
3475 #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section
3476 #define bfd_elf32_new_section_hook elf32_sparc_new_section_hook
3477 #define elf_info_to_howto elf32_sparc_info_to_howto
3478 #define elf_backend_copy_indirect_symbol \
3479 elf32_sparc_copy_indirect_symbol
3480 #define elf_backend_create_dynamic_sections \
3481 elf32_sparc_create_dynamic_sections
3482 #define elf_backend_check_relocs elf32_sparc_check_relocs
3483 #define elf_backend_adjust_dynamic_symbol \
3484 elf32_sparc_adjust_dynamic_symbol
3485 #define elf_backend_size_dynamic_sections \
3486 elf32_sparc_size_dynamic_sections
3487 #define elf_backend_relocate_section elf32_sparc_relocate_section
3488 #define elf_backend_finish_dynamic_symbol \
3489 elf32_sparc_finish_dynamic_symbol
3490 #define elf_backend_finish_dynamic_sections \
3491 elf32_sparc_finish_dynamic_sections
3492 #define bfd_elf32_bfd_merge_private_bfd_data \
3493 elf32_sparc_merge_private_bfd_data
3494 #define bfd_elf32_mkobject elf32_sparc_mkobject
3495 #define elf_backend_object_p elf32_sparc_object_p
3496 #define elf_backend_final_write_processing \
3497 elf32_sparc_final_write_processing
3498 #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
3499 #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
3500 #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
3501
3502 #define elf_backend_can_gc_sections 1
3503 #define elf_backend_can_refcount 1
3504 #define elf_backend_want_got_plt 0
3505 #define elf_backend_plt_readonly 0
3506 #define elf_backend_want_plt_sym 1
3507 #define elf_backend_got_header_size 4
3508 #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE)
3509 #define elf_backend_rela_normal 1
3510
3511 #include "elf32-target.h"
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