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[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, 2004 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "bfdlink.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "elf/sparc.h"
27 #include "opcode/sparc.h"
28
29 static reloc_howto_type *elf32_sparc_reloc_type_lookup
30 PARAMS ((bfd *, bfd_reloc_code_real_type));
31 static void elf32_sparc_info_to_howto
32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
33 static bfd_boolean elf32_sparc_check_relocs
34 PARAMS ((bfd *, struct bfd_link_info *, asection *,
35 const Elf_Internal_Rela *));
36 static bfd_boolean elf32_sparc_adjust_dynamic_symbol
37 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
38 static bfd_boolean allocate_dynrelocs
39 PARAMS ((struct elf_link_hash_entry *, PTR));
40 static bfd_boolean readonly_dynrelocs
41 PARAMS ((struct elf_link_hash_entry *, PTR));
42 static bfd_boolean elf32_sparc_size_dynamic_sections
43 PARAMS ((bfd *, struct bfd_link_info *));
44 static bfd_boolean elf32_sparc_new_section_hook
45 PARAMS ((bfd *, asection *));
46 static bfd_boolean elf32_sparc_relax_section
47 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
48 static bfd_vma dtpoff_base
49 PARAMS ((struct bfd_link_info *));
50 static bfd_vma tpoff
51 PARAMS ((struct bfd_link_info *, bfd_vma));
52 static bfd_boolean elf32_sparc_relocate_section
53 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
55 static bfd_boolean elf32_sparc_finish_dynamic_symbol
56 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
57 Elf_Internal_Sym *));
58 static bfd_boolean elf32_sparc_finish_dynamic_sections
59 PARAMS ((bfd *, struct bfd_link_info *));
60 static bfd_boolean elf32_sparc_merge_private_bfd_data
61 PARAMS ((bfd *, bfd *));
62 static struct bfd_hash_entry *link_hash_newfunc
63 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
64 static struct bfd_link_hash_table *elf32_sparc_link_hash_table_create
65 PARAMS ((bfd *));
66 static bfd_boolean create_got_section
67 PARAMS ((bfd *, struct bfd_link_info *));
68 static bfd_boolean elf32_sparc_create_dynamic_sections
69 PARAMS ((bfd *, struct bfd_link_info *));
70 static void elf32_sparc_copy_indirect_symbol
71 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
72 struct elf_link_hash_entry *));
73 static int elf32_sparc_tls_transition
74 PARAMS ((struct bfd_link_info *, bfd *, int, int));
75
76 static bfd_boolean elf32_sparc_mkobject
77 PARAMS ((bfd *));
78 static bfd_boolean elf32_sparc_object_p
79 PARAMS ((bfd *));
80 static void elf32_sparc_final_write_processing
81 PARAMS ((bfd *, bfd_boolean));
82 static enum elf_reloc_type_class elf32_sparc_reloc_type_class
83 PARAMS ((const Elf_Internal_Rela *));
84 static asection * elf32_sparc_gc_mark_hook
85 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
86 struct elf_link_hash_entry *, Elf_Internal_Sym *));
87 static bfd_boolean elf32_sparc_gc_sweep_hook
88 PARAMS ((bfd *, struct bfd_link_info *, asection *,
89 const Elf_Internal_Rela *));
90 \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 > bfd_get_section_limit (abfd, input_section))
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 > bfd_get_section_limit (abfd, input_section))
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 > bfd_get_section_limit (abfd, input_section))
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 /* Support for core dump NOTE sections. */
506
507 static bfd_boolean
508 elf32_sparc_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
509 {
510 switch (note->descsz)
511 {
512 default:
513 return FALSE;
514
515 case 260: /* Solaris prpsinfo_t. */
516 elf_tdata (abfd)->core_program
517 = _bfd_elfcore_strndup (abfd, note->descdata + 84, 16);
518 elf_tdata (abfd)->core_command
519 = _bfd_elfcore_strndup (abfd, note->descdata + 100, 80);
520 break;
521
522 case 336: /* Solaris psinfo_t. */
523 elf_tdata (abfd)->core_program
524 = _bfd_elfcore_strndup (abfd, note->descdata + 88, 16);
525 elf_tdata (abfd)->core_command
526 = _bfd_elfcore_strndup (abfd, note->descdata + 104, 80);
527 break;
528 }
529
530 return TRUE;
531 }
532
533 \f
534 /* Functions for the SPARC ELF linker. */
535
536 /* The name of the dynamic interpreter. This is put in the .interp
537 section. */
538
539 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
540
541 /* The nop opcode we use. */
542
543 #define SPARC_NOP 0x01000000
544
545 /* The size in bytes of an entry in the procedure linkage table. */
546
547 #define PLT_ENTRY_SIZE 12
548
549 /* The first four entries in a procedure linkage table are reserved,
550 and the initial contents are unimportant (we zero them out).
551 Subsequent entries look like this. See the SVR4 ABI SPARC
552 supplement to see how this works. */
553
554 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
555 #define PLT_ENTRY_WORD0 0x03000000
556 /* b,a .plt0. We fill in the offset later. */
557 #define PLT_ENTRY_WORD1 0x30800000
558 /* nop. */
559 #define PLT_ENTRY_WORD2 SPARC_NOP
560
561 /* The SPARC linker needs to keep track of the number of relocs that it
562 decides to copy as dynamic relocs in check_relocs for each symbol.
563 This is so that it can later discard them if they are found to be
564 unnecessary. We store the information in a field extending the
565 regular ELF linker hash table. */
566
567 struct elf32_sparc_dyn_relocs
568 {
569 struct elf32_sparc_dyn_relocs *next;
570
571 /* The input section of the reloc. */
572 asection *sec;
573
574 /* Total number of relocs copied for the input section. */
575 bfd_size_type count;
576
577 /* Number of pc-relative relocs copied for the input section. */
578 bfd_size_type pc_count;
579 };
580
581 /* SPARC ELF linker hash entry. */
582
583 struct elf32_sparc_link_hash_entry
584 {
585 struct elf_link_hash_entry elf;
586
587 /* Track dynamic relocs copied for this symbol. */
588 struct elf32_sparc_dyn_relocs *dyn_relocs;
589
590 #define GOT_UNKNOWN 0
591 #define GOT_NORMAL 1
592 #define GOT_TLS_GD 2
593 #define GOT_TLS_IE 3
594 unsigned char tls_type;
595 };
596
597 #define elf32_sparc_hash_entry(ent) ((struct elf32_sparc_link_hash_entry *)(ent))
598
599 struct elf32_sparc_obj_tdata
600 {
601 struct elf_obj_tdata root;
602
603 /* tls_type for each local got entry. */
604 char *local_got_tls_type;
605
606 /* TRUE if TLS GD relocs has been seen for this object. */
607 bfd_boolean has_tlsgd;
608 };
609
610 #define elf32_sparc_tdata(abfd) \
611 ((struct elf32_sparc_obj_tdata *) (abfd)->tdata.any)
612
613 #define elf32_sparc_local_got_tls_type(abfd) \
614 (elf32_sparc_tdata (abfd)->local_got_tls_type)
615
616 static bfd_boolean
617 elf32_sparc_mkobject (abfd)
618 bfd *abfd;
619 {
620 bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
621 abfd->tdata.any = bfd_zalloc (abfd, amt);
622 if (abfd->tdata.any == NULL)
623 return FALSE;
624 return TRUE;
625 }
626
627 /* SPARC ELF linker hash table. */
628
629 struct elf32_sparc_link_hash_table
630 {
631 struct elf_link_hash_table elf;
632
633 /* Short-cuts to get to dynamic linker sections. */
634 asection *sgot;
635 asection *srelgot;
636 asection *splt;
637 asection *srelplt;
638 asection *sdynbss;
639 asection *srelbss;
640
641 union {
642 bfd_signed_vma refcount;
643 bfd_vma offset;
644 } tls_ldm_got;
645
646 /* Small local sym to section mapping cache. */
647 struct sym_sec_cache sym_sec;
648 };
649
650 /* Get the SPARC ELF linker hash table from a link_info structure. */
651
652 #define elf32_sparc_hash_table(p) \
653 ((struct elf32_sparc_link_hash_table *) ((p)->hash))
654
655 /* Create an entry in an i386 ELF linker hash table. */
656
657 static struct bfd_hash_entry *
658 link_hash_newfunc (entry, table, string)
659 struct bfd_hash_entry *entry;
660 struct bfd_hash_table *table;
661 const char *string;
662 {
663 /* Allocate the structure if it has not already been allocated by a
664 subclass. */
665 if (entry == NULL)
666 {
667 entry = bfd_hash_allocate (table,
668 sizeof (struct elf32_sparc_link_hash_entry));
669 if (entry == NULL)
670 return entry;
671 }
672
673 /* Call the allocation method of the superclass. */
674 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
675 if (entry != NULL)
676 {
677 struct elf32_sparc_link_hash_entry *eh;
678
679 eh = (struct elf32_sparc_link_hash_entry *) entry;
680 eh->dyn_relocs = NULL;
681 eh->tls_type = GOT_UNKNOWN;
682 }
683
684 return entry;
685 }
686
687 /* Create a SPARC ELF linker hash table. */
688
689 static struct bfd_link_hash_table *
690 elf32_sparc_link_hash_table_create (abfd)
691 bfd *abfd;
692 {
693 struct elf32_sparc_link_hash_table *ret;
694 bfd_size_type amt = sizeof (struct elf32_sparc_link_hash_table);
695
696 ret = (struct elf32_sparc_link_hash_table *) bfd_malloc (amt);
697 if (ret == NULL)
698 return NULL;
699
700 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
701 {
702 free (ret);
703 return NULL;
704 }
705
706 ret->sgot = NULL;
707 ret->srelgot = NULL;
708 ret->splt = NULL;
709 ret->srelplt = NULL;
710 ret->sdynbss = NULL;
711 ret->srelbss = NULL;
712 ret->tls_ldm_got.refcount = 0;
713 ret->sym_sec.abfd = NULL;
714
715 return &ret->elf.root;
716 }
717
718 /* Create .got and .rela.got sections in DYNOBJ, and set up
719 shortcuts to them in our hash table. */
720
721 static bfd_boolean
722 create_got_section (dynobj, info)
723 bfd *dynobj;
724 struct bfd_link_info *info;
725 {
726 struct elf32_sparc_link_hash_table *htab;
727
728 if (! _bfd_elf_create_got_section (dynobj, info))
729 return FALSE;
730
731 htab = elf32_sparc_hash_table (info);
732 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
733 if (!htab->sgot)
734 abort ();
735
736 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
737 if (htab->srelgot == NULL
738 || ! bfd_set_section_flags (dynobj, htab->srelgot,
739 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
740 | SEC_IN_MEMORY | SEC_LINKER_CREATED
741 | SEC_READONLY))
742 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
743 return FALSE;
744 return TRUE;
745 }
746
747 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
748 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
749 hash table. */
750
751 static bfd_boolean
752 elf32_sparc_create_dynamic_sections (dynobj, info)
753 bfd *dynobj;
754 struct bfd_link_info *info;
755 {
756 struct elf32_sparc_link_hash_table *htab;
757
758 htab = elf32_sparc_hash_table (info);
759 if (!htab->sgot && !create_got_section (dynobj, info))
760 return FALSE;
761
762 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
763 return FALSE;
764
765 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
766 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
767 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
768 if (!info->shared)
769 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
770
771 if (!htab->splt || !htab->srelplt || !htab->sdynbss
772 || (!info->shared && !htab->srelbss))
773 abort ();
774
775 return TRUE;
776 }
777
778 /* Copy the extra info we tack onto an elf_link_hash_entry. */
779
780 static void
781 elf32_sparc_copy_indirect_symbol (bed, dir, ind)
782 const struct elf_backend_data *bed;
783 struct elf_link_hash_entry *dir, *ind;
784 {
785 struct elf32_sparc_link_hash_entry *edir, *eind;
786
787 edir = (struct elf32_sparc_link_hash_entry *) dir;
788 eind = (struct elf32_sparc_link_hash_entry *) ind;
789
790 if (eind->dyn_relocs != NULL)
791 {
792 if (edir->dyn_relocs != NULL)
793 {
794 struct elf32_sparc_dyn_relocs **pp;
795 struct elf32_sparc_dyn_relocs *p;
796
797 if (ind->root.type == bfd_link_hash_indirect)
798 abort ();
799
800 /* Add reloc counts against the weak sym to the strong sym
801 list. Merge any entries against the same section. */
802 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
803 {
804 struct elf32_sparc_dyn_relocs *q;
805
806 for (q = edir->dyn_relocs; q != NULL; q = q->next)
807 if (q->sec == p->sec)
808 {
809 q->pc_count += p->pc_count;
810 q->count += p->count;
811 *pp = p->next;
812 break;
813 }
814 if (q == NULL)
815 pp = &p->next;
816 }
817 *pp = edir->dyn_relocs;
818 }
819
820 edir->dyn_relocs = eind->dyn_relocs;
821 eind->dyn_relocs = NULL;
822 }
823
824 if (ind->root.type == bfd_link_hash_indirect
825 && dir->got.refcount <= 0)
826 {
827 edir->tls_type = eind->tls_type;
828 eind->tls_type = GOT_UNKNOWN;
829 }
830 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
831 }
832
833 static int
834 elf32_sparc_tls_transition (info, abfd, r_type, is_local)
835 struct bfd_link_info *info;
836 bfd *abfd;
837 int r_type;
838 int is_local;
839 {
840 if (r_type == R_SPARC_TLS_GD_HI22
841 && ! elf32_sparc_tdata (abfd)->has_tlsgd)
842 r_type = R_SPARC_REV32;
843
844 if (info->shared)
845 return r_type;
846
847 switch (r_type)
848 {
849 case R_SPARC_TLS_GD_HI22:
850 if (is_local)
851 return R_SPARC_TLS_LE_HIX22;
852 return R_SPARC_TLS_IE_HI22;
853 case R_SPARC_TLS_GD_LO10:
854 if (is_local)
855 return R_SPARC_TLS_LE_LOX10;
856 return R_SPARC_TLS_IE_LO10;
857 case R_SPARC_TLS_IE_HI22:
858 if (is_local)
859 return R_SPARC_TLS_LE_HIX22;
860 return r_type;
861 case R_SPARC_TLS_IE_LO10:
862 if (is_local)
863 return R_SPARC_TLS_LE_LOX10;
864 return r_type;
865 case R_SPARC_TLS_LDM_HI22:
866 return R_SPARC_TLS_LE_HIX22;
867 case R_SPARC_TLS_LDM_LO10:
868 return R_SPARC_TLS_LE_LOX10;
869 }
870
871 return r_type;
872 }
873
874 /* Look through the relocs for a section during the first phase, and
875 allocate space in the global offset table or procedure linkage
876 table. */
877
878 static bfd_boolean
879 elf32_sparc_check_relocs (abfd, info, sec, relocs)
880 bfd *abfd;
881 struct bfd_link_info *info;
882 asection *sec;
883 const Elf_Internal_Rela *relocs;
884 {
885 struct elf32_sparc_link_hash_table *htab;
886 Elf_Internal_Shdr *symtab_hdr;
887 struct elf_link_hash_entry **sym_hashes;
888 bfd_vma *local_got_offsets;
889 const Elf_Internal_Rela *rel;
890 const Elf_Internal_Rela *rel_end;
891 asection *sreloc;
892 bfd_boolean checked_tlsgd = FALSE;
893
894 if (info->relocatable)
895 return TRUE;
896
897 htab = elf32_sparc_hash_table (info);
898 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
899 sym_hashes = elf_sym_hashes (abfd);
900 local_got_offsets = elf_local_got_offsets (abfd);
901
902 sreloc = NULL;
903
904 rel_end = relocs + sec->reloc_count;
905 for (rel = relocs; rel < rel_end; rel++)
906 {
907 unsigned int r_type;
908 unsigned long r_symndx;
909 struct elf_link_hash_entry *h;
910
911 r_symndx = ELF32_R_SYM (rel->r_info);
912 r_type = ELF32_R_TYPE (rel->r_info);
913
914 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
915 {
916 (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
917 bfd_archive_filename (abfd),
918 r_symndx);
919 return FALSE;
920 }
921
922 if (r_symndx < symtab_hdr->sh_info)
923 h = NULL;
924 else
925 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
926
927 /* Compatibility with old R_SPARC_REV32 reloc conflicting
928 with R_SPARC_TLS_GD_HI22. */
929 if (! checked_tlsgd)
930 switch (r_type)
931 {
932 case R_SPARC_TLS_GD_HI22:
933 {
934 const Elf_Internal_Rela *relt;
935
936 for (relt = rel + 1; relt < rel_end; relt++)
937 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
938 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
939 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
940 break;
941 checked_tlsgd = TRUE;
942 elf32_sparc_tdata (abfd)->has_tlsgd = relt < rel_end;
943 }
944 break;
945 case R_SPARC_TLS_GD_LO10:
946 case R_SPARC_TLS_GD_ADD:
947 case R_SPARC_TLS_GD_CALL:
948 checked_tlsgd = TRUE;
949 elf32_sparc_tdata (abfd)->has_tlsgd = TRUE;
950 break;
951 }
952
953 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h == NULL);
954 switch (r_type)
955 {
956 case R_SPARC_TLS_LDM_HI22:
957 case R_SPARC_TLS_LDM_LO10:
958 htab->tls_ldm_got.refcount += 1;
959 break;
960
961 case R_SPARC_TLS_LE_HIX22:
962 case R_SPARC_TLS_LE_LOX10:
963 if (info->shared)
964 goto r_sparc_plt32;
965 break;
966
967 case R_SPARC_TLS_IE_HI22:
968 case R_SPARC_TLS_IE_LO10:
969 if (info->shared)
970 info->flags |= DF_STATIC_TLS;
971 /* Fall through */
972
973 case R_SPARC_GOT10:
974 case R_SPARC_GOT13:
975 case R_SPARC_GOT22:
976 case R_SPARC_TLS_GD_HI22:
977 case R_SPARC_TLS_GD_LO10:
978 /* This symbol requires a global offset table entry. */
979 {
980 int tls_type, old_tls_type;
981
982 switch (r_type)
983 {
984 default:
985 case R_SPARC_GOT10:
986 case R_SPARC_GOT13:
987 case R_SPARC_GOT22:
988 tls_type = GOT_NORMAL;
989 break;
990 case R_SPARC_TLS_GD_HI22:
991 case R_SPARC_TLS_GD_LO10:
992 tls_type = GOT_TLS_GD;
993 break;
994 case R_SPARC_TLS_IE_HI22:
995 case R_SPARC_TLS_IE_LO10:
996 tls_type = GOT_TLS_IE;
997 break;
998 }
999
1000 if (h != NULL)
1001 {
1002 h->got.refcount += 1;
1003 old_tls_type = elf32_sparc_hash_entry(h)->tls_type;
1004 }
1005 else
1006 {
1007 bfd_signed_vma *local_got_refcounts;
1008
1009 /* This is a global offset table entry for a local symbol. */
1010 local_got_refcounts = elf_local_got_refcounts (abfd);
1011 if (local_got_refcounts == NULL)
1012 {
1013 bfd_size_type size;
1014
1015 size = symtab_hdr->sh_info;
1016 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1017 local_got_refcounts = ((bfd_signed_vma *)
1018 bfd_zalloc (abfd, size));
1019 if (local_got_refcounts == NULL)
1020 return FALSE;
1021 elf_local_got_refcounts (abfd) = local_got_refcounts;
1022 elf32_sparc_local_got_tls_type (abfd)
1023 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1024 }
1025 local_got_refcounts[r_symndx] += 1;
1026 old_tls_type = elf32_sparc_local_got_tls_type (abfd) [r_symndx];
1027 }
1028
1029 /* If a TLS symbol is accessed using IE at least once,
1030 there is no point to use dynamic model for it. */
1031 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1032 && (old_tls_type != GOT_TLS_GD
1033 || tls_type != GOT_TLS_IE))
1034 {
1035 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1036 tls_type = old_tls_type;
1037 else
1038 {
1039 (*_bfd_error_handler)
1040 (_("%s: `%s' accessed both as normal and thread local symbol"),
1041 bfd_archive_filename (abfd),
1042 h ? h->root.root.string : "<local>");
1043 return FALSE;
1044 }
1045 }
1046
1047 if (old_tls_type != tls_type)
1048 {
1049 if (h != NULL)
1050 elf32_sparc_hash_entry (h)->tls_type = tls_type;
1051 else
1052 elf32_sparc_local_got_tls_type (abfd) [r_symndx] = tls_type;
1053 }
1054 }
1055
1056 if (htab->sgot == NULL)
1057 {
1058 if (htab->elf.dynobj == NULL)
1059 htab->elf.dynobj = abfd;
1060 if (!create_got_section (htab->elf.dynobj, info))
1061 return FALSE;
1062 }
1063 break;
1064
1065 case R_SPARC_TLS_GD_CALL:
1066 case R_SPARC_TLS_LDM_CALL:
1067 if (info->shared)
1068 {
1069 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1070 __tls_get_addr. */
1071 struct bfd_link_hash_entry *bh = NULL;
1072 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1073 "__tls_get_addr", 0,
1074 bfd_und_section_ptr, 0,
1075 NULL, FALSE, FALSE,
1076 &bh))
1077 return FALSE;
1078 h = (struct elf_link_hash_entry *) bh;
1079 }
1080 else
1081 break;
1082 /* Fall through */
1083
1084 case R_SPARC_PLT32:
1085 case R_SPARC_WPLT30:
1086 /* This symbol requires a procedure linkage table entry. We
1087 actually build the entry in adjust_dynamic_symbol,
1088 because this might be a case of linking PIC code without
1089 linking in any dynamic objects, in which case we don't
1090 need to generate a procedure linkage table after all. */
1091
1092 if (h == NULL)
1093 {
1094 /* The Solaris native assembler will generate a WPLT30
1095 reloc for a local symbol if you assemble a call from
1096 one section to another when using -K pic. We treat
1097 it as WDISP30. */
1098 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1099 goto r_sparc_plt32;
1100 break;
1101 }
1102
1103 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1104
1105 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1106 goto r_sparc_plt32;
1107 h->plt.refcount += 1;
1108 break;
1109
1110 case R_SPARC_PC10:
1111 case R_SPARC_PC22:
1112 if (h != NULL)
1113 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1114
1115 if (h != NULL
1116 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1117 break;
1118 /* Fall through. */
1119
1120 case R_SPARC_DISP8:
1121 case R_SPARC_DISP16:
1122 case R_SPARC_DISP32:
1123 case R_SPARC_WDISP30:
1124 case R_SPARC_WDISP22:
1125 case R_SPARC_WDISP19:
1126 case R_SPARC_WDISP16:
1127 case R_SPARC_8:
1128 case R_SPARC_16:
1129 case R_SPARC_32:
1130 case R_SPARC_HI22:
1131 case R_SPARC_22:
1132 case R_SPARC_13:
1133 case R_SPARC_LO10:
1134 case R_SPARC_UA16:
1135 case R_SPARC_UA32:
1136 if (h != NULL)
1137 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1138
1139 r_sparc_plt32:
1140 if (h != NULL && !info->shared)
1141 {
1142 /* We may need a .plt entry if the function this reloc
1143 refers to is in a shared lib. */
1144 h->plt.refcount += 1;
1145 }
1146
1147 /* If we are creating a shared library, and this is a reloc
1148 against a global symbol, or a non PC relative reloc
1149 against a local symbol, then we need to copy the reloc
1150 into the shared library. However, if we are linking with
1151 -Bsymbolic, we do not need to copy a reloc against a
1152 global symbol which is defined in an object we are
1153 including in the link (i.e., DEF_REGULAR is set). At
1154 this point we have not seen all the input files, so it is
1155 possible that DEF_REGULAR is not set now but will be set
1156 later (it is never cleared). In case of a weak definition,
1157 DEF_REGULAR may be cleared later by a strong definition in
1158 a shared library. We account for that possibility below by
1159 storing information in the relocs_copied field of the hash
1160 table entry. A similar situation occurs when creating
1161 shared libraries and symbol visibility changes render the
1162 symbol local.
1163
1164 If on the other hand, we are creating an executable, we
1165 may need to keep relocations for symbols satisfied by a
1166 dynamic library if we manage to avoid copy relocs for the
1167 symbol. */
1168 if ((info->shared
1169 && (sec->flags & SEC_ALLOC) != 0
1170 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1171 || (h != NULL
1172 && (! info->symbolic
1173 || h->root.type == bfd_link_hash_defweak
1174 || (h->elf_link_hash_flags
1175 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1176 || (!info->shared
1177 && (sec->flags & SEC_ALLOC) != 0
1178 && h != NULL
1179 && (h->root.type == bfd_link_hash_defweak
1180 || (h->elf_link_hash_flags
1181 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1182 {
1183 struct elf32_sparc_dyn_relocs *p;
1184 struct elf32_sparc_dyn_relocs **head;
1185
1186 /* When creating a shared object, we must copy these
1187 relocs into the output file. We create a reloc
1188 section in dynobj and make room for the reloc. */
1189 if (sreloc == NULL)
1190 {
1191 const char *name;
1192 bfd *dynobj;
1193
1194 name = (bfd_elf_string_from_elf_section
1195 (abfd,
1196 elf_elfheader (abfd)->e_shstrndx,
1197 elf_section_data (sec)->rel_hdr.sh_name));
1198 if (name == NULL)
1199 return FALSE;
1200
1201 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1202 && strcmp (bfd_get_section_name (abfd, sec),
1203 name + 5) == 0);
1204
1205 if (htab->elf.dynobj == NULL)
1206 htab->elf.dynobj = abfd;
1207 dynobj = htab->elf.dynobj;
1208
1209 sreloc = bfd_get_section_by_name (dynobj, name);
1210 if (sreloc == NULL)
1211 {
1212 flagword flags;
1213
1214 sreloc = bfd_make_section (dynobj, name);
1215 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1216 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1217 if ((sec->flags & SEC_ALLOC) != 0)
1218 flags |= SEC_ALLOC | SEC_LOAD;
1219 if (sreloc == NULL
1220 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1221 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1222 return FALSE;
1223 }
1224 elf_section_data (sec)->sreloc = sreloc;
1225 }
1226
1227 /* If this is a global symbol, we count the number of
1228 relocations we need for this symbol. */
1229 if (h != NULL)
1230 head = &((struct elf32_sparc_link_hash_entry *) h)->dyn_relocs;
1231 else
1232 {
1233 /* Track dynamic relocs needed for local syms too.
1234 We really need local syms available to do this
1235 easily. Oh well. */
1236
1237 asection *s;
1238 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1239 sec, r_symndx);
1240 if (s == NULL)
1241 return FALSE;
1242
1243 head = ((struct elf32_sparc_dyn_relocs **)
1244 &elf_section_data (s)->local_dynrel);
1245 }
1246
1247 p = *head;
1248 if (p == NULL || p->sec != sec)
1249 {
1250 bfd_size_type amt = sizeof *p;
1251 p = ((struct elf32_sparc_dyn_relocs *)
1252 bfd_alloc (htab->elf.dynobj, amt));
1253 if (p == NULL)
1254 return FALSE;
1255 p->next = *head;
1256 *head = p;
1257 p->sec = sec;
1258 p->count = 0;
1259 p->pc_count = 0;
1260 }
1261
1262 p->count += 1;
1263 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1264 p->pc_count += 1;
1265 }
1266
1267 break;
1268
1269 case R_SPARC_GNU_VTINHERIT:
1270 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1271 return FALSE;
1272 break;
1273
1274 case R_SPARC_GNU_VTENTRY:
1275 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1276 return FALSE;
1277 break;
1278
1279 default:
1280 break;
1281 }
1282 }
1283
1284 return TRUE;
1285 }
1286
1287 static asection *
1288 elf32_sparc_gc_mark_hook (sec, info, rel, h, sym)
1289 asection *sec;
1290 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1291 Elf_Internal_Rela *rel;
1292 struct elf_link_hash_entry *h;
1293 Elf_Internal_Sym *sym;
1294 {
1295 if (h != NULL)
1296 {
1297 switch (ELF32_R_TYPE (rel->r_info))
1298 {
1299 case R_SPARC_GNU_VTINHERIT:
1300 case R_SPARC_GNU_VTENTRY:
1301 break;
1302
1303 default:
1304 switch (h->root.type)
1305 {
1306 case bfd_link_hash_defined:
1307 case bfd_link_hash_defweak:
1308 return h->root.u.def.section;
1309
1310 case bfd_link_hash_common:
1311 return h->root.u.c.p->section;
1312
1313 default:
1314 break;
1315 }
1316 }
1317 }
1318 else
1319 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1320
1321 return NULL;
1322 }
1323
1324 /* Update the got entry reference counts for the section being removed. */
1325 static bfd_boolean
1326 elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs)
1327 bfd *abfd;
1328 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1329 asection *sec;
1330 const Elf_Internal_Rela *relocs;
1331 {
1332 Elf_Internal_Shdr *symtab_hdr;
1333 struct elf_link_hash_entry **sym_hashes;
1334 bfd_signed_vma *local_got_refcounts;
1335 const Elf_Internal_Rela *rel, *relend;
1336
1337 elf_section_data (sec)->local_dynrel = NULL;
1338
1339 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1340 sym_hashes = elf_sym_hashes (abfd);
1341 local_got_refcounts = elf_local_got_refcounts (abfd);
1342
1343 relend = relocs + sec->reloc_count;
1344 for (rel = relocs; rel < relend; rel++)
1345 {
1346 unsigned long r_symndx;
1347 unsigned int r_type;
1348 struct elf_link_hash_entry *h = NULL;
1349
1350 r_symndx = ELF32_R_SYM (rel->r_info);
1351 if (r_symndx >= symtab_hdr->sh_info)
1352 {
1353 struct elf32_sparc_link_hash_entry *eh;
1354 struct elf32_sparc_dyn_relocs **pp;
1355 struct elf32_sparc_dyn_relocs *p;
1356
1357 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1358 eh = (struct elf32_sparc_link_hash_entry *) h;
1359 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1360 if (p->sec == sec)
1361 {
1362 /* Everything must go for SEC. */
1363 *pp = p->next;
1364 break;
1365 }
1366 }
1367
1368 r_type = ELF32_R_TYPE (rel->r_info);
1369 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h != NULL);
1370 switch (r_type)
1371 {
1372 case R_SPARC_TLS_LDM_HI22:
1373 case R_SPARC_TLS_LDM_LO10:
1374 if (elf32_sparc_hash_table (info)->tls_ldm_got.refcount > 0)
1375 elf32_sparc_hash_table (info)->tls_ldm_got.refcount -= 1;
1376 break;
1377
1378 case R_SPARC_TLS_GD_HI22:
1379 case R_SPARC_TLS_GD_LO10:
1380 case R_SPARC_TLS_IE_HI22:
1381 case R_SPARC_TLS_IE_LO10:
1382 case R_SPARC_GOT10:
1383 case R_SPARC_GOT13:
1384 case R_SPARC_GOT22:
1385 if (h != NULL)
1386 {
1387 if (h->got.refcount > 0)
1388 h->got.refcount--;
1389 }
1390 else
1391 {
1392 if (local_got_refcounts[r_symndx] > 0)
1393 local_got_refcounts[r_symndx]--;
1394 }
1395 break;
1396
1397 case R_SPARC_PC10:
1398 case R_SPARC_PC22:
1399 if (h != NULL
1400 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1401 break;
1402 /* Fall through. */
1403
1404 case R_SPARC_DISP8:
1405 case R_SPARC_DISP16:
1406 case R_SPARC_DISP32:
1407 case R_SPARC_WDISP30:
1408 case R_SPARC_WDISP22:
1409 case R_SPARC_WDISP19:
1410 case R_SPARC_WDISP16:
1411 case R_SPARC_8:
1412 case R_SPARC_16:
1413 case R_SPARC_32:
1414 case R_SPARC_HI22:
1415 case R_SPARC_22:
1416 case R_SPARC_13:
1417 case R_SPARC_LO10:
1418 case R_SPARC_UA16:
1419 case R_SPARC_UA32:
1420 case R_SPARC_PLT32:
1421 if (info->shared)
1422 break;
1423 /* Fall through. */
1424
1425 case R_SPARC_WPLT30:
1426 if (h != NULL)
1427 {
1428 if (h->plt.refcount > 0)
1429 h->plt.refcount--;
1430 }
1431 break;
1432
1433 default:
1434 break;
1435 }
1436 }
1437
1438 return TRUE;
1439 }
1440
1441 /* Adjust a symbol defined by a dynamic object and referenced by a
1442 regular object. The current definition is in some section of the
1443 dynamic object, but we're not including those sections. We have to
1444 change the definition to something the rest of the link can
1445 understand. */
1446
1447 static bfd_boolean
1448 elf32_sparc_adjust_dynamic_symbol (info, h)
1449 struct bfd_link_info *info;
1450 struct elf_link_hash_entry *h;
1451 {
1452 struct elf32_sparc_link_hash_table *htab;
1453 struct elf32_sparc_link_hash_entry * eh;
1454 struct elf32_sparc_dyn_relocs *p;
1455 asection *s;
1456 unsigned int power_of_two;
1457
1458 htab = elf32_sparc_hash_table (info);
1459
1460 /* Make sure we know what is going on here. */
1461 BFD_ASSERT (htab->elf.dynobj != NULL
1462 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1463 || h->weakdef != NULL
1464 || ((h->elf_link_hash_flags
1465 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1466 && (h->elf_link_hash_flags
1467 & ELF_LINK_HASH_REF_REGULAR) != 0
1468 && (h->elf_link_hash_flags
1469 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1470
1471 /* If this is a function, put it in the procedure linkage table. We
1472 will fill in the contents of the procedure linkage table later
1473 (although we could actually do it here). The STT_NOTYPE
1474 condition is a hack specifically for the Oracle libraries
1475 delivered for Solaris; for some inexplicable reason, they define
1476 some of their functions as STT_NOTYPE when they really should be
1477 STT_FUNC. */
1478 if (h->type == STT_FUNC
1479 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
1480 || (h->type == STT_NOTYPE
1481 && (h->root.type == bfd_link_hash_defined
1482 || h->root.type == bfd_link_hash_defweak)
1483 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1484 {
1485 if (h->plt.refcount <= 0
1486 || (! info->shared
1487 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1488 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
1489 && h->root.type != bfd_link_hash_undefweak
1490 && h->root.type != bfd_link_hash_undefined))
1491 {
1492 /* This case can occur if we saw a WPLT30 reloc in an input
1493 file, but the symbol was never referred to by a dynamic
1494 object, or if all references were garbage collected. In
1495 such a case, we don't actually need to build a procedure
1496 linkage table, and we can just do a WDISP30 reloc instead. */
1497 h->plt.offset = (bfd_vma) -1;
1498 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1499 }
1500
1501 return TRUE;
1502 }
1503 else
1504 h->plt.offset = (bfd_vma) -1;
1505
1506 /* If this is a weak symbol, and there is a real definition, the
1507 processor independent code will have arranged for us to see the
1508 real definition first, and we can just use the same value. */
1509 if (h->weakdef != NULL)
1510 {
1511 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1512 || h->weakdef->root.type == bfd_link_hash_defweak);
1513 h->root.u.def.section = h->weakdef->root.u.def.section;
1514 h->root.u.def.value = h->weakdef->root.u.def.value;
1515 return TRUE;
1516 }
1517
1518 /* This is a reference to a symbol defined by a dynamic object which
1519 is not a function. */
1520
1521 /* If we are creating a shared library, we must presume that the
1522 only references to the symbol are via the global offset table.
1523 For such cases we need not do anything here; the relocations will
1524 be handled correctly by relocate_section. */
1525 if (info->shared)
1526 return TRUE;
1527
1528 /* If there are no references to this symbol that do not use the
1529 GOT, we don't need to generate a copy reloc. */
1530 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1531 return TRUE;
1532
1533 eh = (struct elf32_sparc_link_hash_entry *) h;
1534 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1535 {
1536 s = p->sec->output_section;
1537 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1538 break;
1539 }
1540
1541 /* If we didn't find any dynamic relocs in read-only sections, then
1542 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1543 if (p == NULL)
1544 {
1545 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1546 return TRUE;
1547 }
1548
1549 /* We must allocate the symbol in our .dynbss section, which will
1550 become part of the .bss section of the executable. There will be
1551 an entry for this symbol in the .dynsym section. The dynamic
1552 object will contain position independent code, so all references
1553 from the dynamic object to this symbol will go through the global
1554 offset table. The dynamic linker will use the .dynsym entry to
1555 determine the address it must put in the global offset table, so
1556 both the dynamic object and the regular object will refer to the
1557 same memory location for the variable. */
1558
1559 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1560 to copy the initial value out of the dynamic object and into the
1561 runtime process image. We need to remember the offset into the
1562 .rel.bss section we are going to use. */
1563 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1564 {
1565 htab->srelbss->size += sizeof (Elf32_External_Rela);
1566 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1567 }
1568
1569 /* We need to figure out the alignment required for this symbol. I
1570 have no idea how ELF linkers handle this. */
1571 power_of_two = bfd_log2 (h->size);
1572 if (power_of_two > 3)
1573 power_of_two = 3;
1574
1575 /* Apply the required alignment. */
1576 s = htab->sdynbss;
1577 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1578 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1579 {
1580 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1581 return FALSE;
1582 }
1583
1584 /* Define the symbol as being at this point in the section. */
1585 h->root.u.def.section = s;
1586 h->root.u.def.value = s->size;
1587
1588 /* Increment the section size to make room for the symbol. */
1589 s->size += h->size;
1590
1591 return TRUE;
1592 }
1593
1594 /* Allocate space in .plt, .got and associated reloc sections for
1595 dynamic relocs. */
1596
1597 static bfd_boolean
1598 allocate_dynrelocs (h, inf)
1599 struct elf_link_hash_entry *h;
1600 PTR inf;
1601 {
1602 struct bfd_link_info *info;
1603 struct elf32_sparc_link_hash_table *htab;
1604 struct elf32_sparc_link_hash_entry *eh;
1605 struct elf32_sparc_dyn_relocs *p;
1606
1607 if (h->root.type == bfd_link_hash_indirect)
1608 return TRUE;
1609
1610 if (h->root.type == bfd_link_hash_warning)
1611 /* When warning symbols are created, they **replace** the "real"
1612 entry in the hash table, thus we never get to see the real
1613 symbol in a hash traversal. So look at it now. */
1614 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1615
1616 info = (struct bfd_link_info *) inf;
1617 htab = elf32_sparc_hash_table (info);
1618
1619 if (htab->elf.dynamic_sections_created
1620 && h->plt.refcount > 0)
1621 {
1622 /* Make sure this symbol is output as a dynamic symbol.
1623 Undefined weak syms won't yet be marked as dynamic. */
1624 if (h->dynindx == -1
1625 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1626 {
1627 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1628 return FALSE;
1629 }
1630
1631 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1632 {
1633 asection *s = htab->splt;
1634
1635 /* The first four entries in .plt are reserved. */
1636 if (s->size == 0)
1637 s->size = 4 * PLT_ENTRY_SIZE;
1638
1639 /* The procedure linkage table has a maximum size. */
1640 if (s->size >= 0x400000)
1641 {
1642 bfd_set_error (bfd_error_bad_value);
1643 return FALSE;
1644 }
1645
1646 h->plt.offset = s->size;
1647
1648 /* If this symbol is not defined in a regular file, and we are
1649 not generating a shared library, then set the symbol to this
1650 location in the .plt. This is required to make function
1651 pointers compare as equal between the normal executable and
1652 the shared library. */
1653 if (! info->shared
1654 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1655 {
1656 h->root.u.def.section = s;
1657 h->root.u.def.value = h->plt.offset;
1658 }
1659
1660 /* Make room for this entry. */
1661 s->size += PLT_ENTRY_SIZE;
1662
1663 /* We also need to make an entry in the .rela.plt section. */
1664 htab->srelplt->size += sizeof (Elf32_External_Rela);
1665 }
1666 else
1667 {
1668 h->plt.offset = (bfd_vma) -1;
1669 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1670 }
1671 }
1672 else
1673 {
1674 h->plt.offset = (bfd_vma) -1;
1675 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1676 }
1677
1678 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
1679 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
1680 if (h->got.refcount > 0
1681 && !info->shared
1682 && h->dynindx == -1
1683 && elf32_sparc_hash_entry(h)->tls_type == GOT_TLS_IE)
1684 h->got.offset = (bfd_vma) -1;
1685 else if (h->got.refcount > 0)
1686 {
1687 asection *s;
1688 bfd_boolean dyn;
1689 int tls_type = elf32_sparc_hash_entry(h)->tls_type;
1690
1691 /* Make sure this symbol is output as a dynamic symbol.
1692 Undefined weak syms won't yet be marked as dynamic. */
1693 if (h->dynindx == -1
1694 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1695 {
1696 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1697 return FALSE;
1698 }
1699
1700 s = htab->sgot;
1701 h->got.offset = s->size;
1702 s->size += 4;
1703 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
1704 if (tls_type == GOT_TLS_GD)
1705 s->size += 4;
1706 dyn = htab->elf.dynamic_sections_created;
1707 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
1708 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
1709 global. */
1710 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1711 || tls_type == GOT_TLS_IE)
1712 htab->srelgot->size += sizeof (Elf32_External_Rela);
1713 else if (tls_type == GOT_TLS_GD)
1714 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
1715 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
1716 htab->srelgot->size += sizeof (Elf32_External_Rela);
1717 }
1718 else
1719 h->got.offset = (bfd_vma) -1;
1720
1721 eh = (struct elf32_sparc_link_hash_entry *) h;
1722 if (eh->dyn_relocs == NULL)
1723 return TRUE;
1724
1725 /* In the shared -Bsymbolic case, discard space allocated for
1726 dynamic pc-relative relocs against symbols which turn out to be
1727 defined in regular objects. For the normal shared case, discard
1728 space for pc-relative relocs that have become local due to symbol
1729 visibility changes. */
1730
1731 if (info->shared)
1732 {
1733 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1734 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
1735 || info->symbolic))
1736 {
1737 struct elf32_sparc_dyn_relocs **pp;
1738
1739 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1740 {
1741 p->count -= p->pc_count;
1742 p->pc_count = 0;
1743 if (p->count == 0)
1744 *pp = p->next;
1745 else
1746 pp = &p->next;
1747 }
1748 }
1749 }
1750 else
1751 {
1752 /* For the non-shared case, discard space for relocs against
1753 symbols which turn out to need copy relocs or are not
1754 dynamic. */
1755
1756 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1757 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1758 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1759 || (htab->elf.dynamic_sections_created
1760 && (h->root.type == bfd_link_hash_undefweak
1761 || h->root.type == bfd_link_hash_undefined))))
1762 {
1763 /* Make sure this symbol is output as a dynamic symbol.
1764 Undefined weak syms won't yet be marked as dynamic. */
1765 if (h->dynindx == -1
1766 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1767 {
1768 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1769 return FALSE;
1770 }
1771
1772 /* If that succeeded, we know we'll be keeping all the
1773 relocs. */
1774 if (h->dynindx != -1)
1775 goto keep;
1776 }
1777
1778 eh->dyn_relocs = NULL;
1779
1780 keep: ;
1781 }
1782
1783 /* Finally, allocate space. */
1784 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1785 {
1786 asection *sreloc = elf_section_data (p->sec)->sreloc;
1787 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1788 }
1789
1790 return TRUE;
1791 }
1792
1793 /* Find any dynamic relocs that apply to read-only sections. */
1794
1795 static bfd_boolean
1796 readonly_dynrelocs (h, inf)
1797 struct elf_link_hash_entry *h;
1798 PTR inf;
1799 {
1800 struct elf32_sparc_link_hash_entry *eh;
1801 struct elf32_sparc_dyn_relocs *p;
1802
1803 if (h->root.type == bfd_link_hash_warning)
1804 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1805
1806 eh = (struct elf32_sparc_link_hash_entry *) h;
1807 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1808 {
1809 asection *s = p->sec->output_section;
1810
1811 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1812 {
1813 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1814
1815 info->flags |= DF_TEXTREL;
1816
1817 /* Not an error, just cut short the traversal. */
1818 return FALSE;
1819 }
1820 }
1821 return TRUE;
1822 }
1823
1824 /* Set the sizes of the dynamic sections. */
1825
1826 static bfd_boolean
1827 elf32_sparc_size_dynamic_sections (output_bfd, info)
1828 bfd *output_bfd ATTRIBUTE_UNUSED;
1829 struct bfd_link_info *info;
1830 {
1831 struct elf32_sparc_link_hash_table *htab;
1832 bfd *dynobj;
1833 asection *s;
1834 bfd *ibfd;
1835
1836 htab = elf32_sparc_hash_table (info);
1837 dynobj = htab->elf.dynobj;
1838 BFD_ASSERT (dynobj != NULL);
1839
1840 if (elf_hash_table (info)->dynamic_sections_created)
1841 {
1842 /* Set the contents of the .interp section to the interpreter. */
1843 if (info->executable)
1844 {
1845 s = bfd_get_section_by_name (dynobj, ".interp");
1846 BFD_ASSERT (s != NULL);
1847 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1848 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1849 }
1850 }
1851
1852 /* Set up .got offsets for local syms, and space for local dynamic
1853 relocs. */
1854 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1855 {
1856 bfd_signed_vma *local_got;
1857 bfd_signed_vma *end_local_got;
1858 char *local_tls_type;
1859 bfd_size_type locsymcount;
1860 Elf_Internal_Shdr *symtab_hdr;
1861 asection *srel;
1862
1863 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
1864 continue;
1865
1866 for (s = ibfd->sections; s != NULL; s = s->next)
1867 {
1868 struct elf32_sparc_dyn_relocs *p;
1869
1870 for (p = *((struct elf32_sparc_dyn_relocs **)
1871 &elf_section_data (s)->local_dynrel);
1872 p != NULL;
1873 p = p->next)
1874 {
1875 if (!bfd_is_abs_section (p->sec)
1876 && bfd_is_abs_section (p->sec->output_section))
1877 {
1878 /* Input section has been discarded, either because
1879 it is a copy of a linkonce section or due to
1880 linker script /DISCARD/, so we'll be discarding
1881 the relocs too. */
1882 }
1883 else if (p->count != 0)
1884 {
1885 srel = elf_section_data (p->sec)->sreloc;
1886 srel->size += p->count * sizeof (Elf32_External_Rela);
1887 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1888 info->flags |= DF_TEXTREL;
1889 }
1890 }
1891 }
1892
1893 local_got = elf_local_got_refcounts (ibfd);
1894 if (!local_got)
1895 continue;
1896
1897 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
1898 locsymcount = symtab_hdr->sh_info;
1899 end_local_got = local_got + locsymcount;
1900 local_tls_type = elf32_sparc_local_got_tls_type (ibfd);
1901 s = htab->sgot;
1902 srel = htab->srelgot;
1903 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
1904 {
1905 if (*local_got > 0)
1906 {
1907 *local_got = s->size;
1908 s->size += 4;
1909 if (*local_tls_type == GOT_TLS_GD)
1910 s->size += 4;
1911 if (info->shared
1912 || *local_tls_type == GOT_TLS_GD
1913 || *local_tls_type == GOT_TLS_IE)
1914 srel->size += sizeof (Elf32_External_Rela);
1915 }
1916 else
1917 *local_got = (bfd_vma) -1;
1918 }
1919 }
1920
1921 if (htab->tls_ldm_got.refcount > 0)
1922 {
1923 /* Allocate 2 got entries and 1 dynamic reloc for
1924 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
1925 htab->tls_ldm_got.offset = htab->sgot->size;
1926 htab->sgot->size += 8;
1927 htab->srelgot->size += sizeof (Elf32_External_Rela);
1928 }
1929 else
1930 htab->tls_ldm_got.offset = -1;
1931
1932 /* Allocate global sym .plt and .got entries, and space for global
1933 sym dynamic relocs. */
1934 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
1935
1936 if (elf_hash_table (info)->dynamic_sections_created)
1937 {
1938 /* Make space for the trailing nop in .plt. */
1939 if (htab->splt->size > 0)
1940 htab->splt->size += 4;
1941
1942 /* If the .got section is more than 0x1000 bytes, we add
1943 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1944 bit relocations have a greater chance of working. */
1945 if (htab->sgot->size >= 0x1000
1946 && elf_hash_table (info)->hgot->root.u.def.value == 0)
1947 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
1948 }
1949
1950 /* The check_relocs and adjust_dynamic_symbol entry points have
1951 determined the sizes of the various dynamic sections. Allocate
1952 memory for them. */
1953 for (s = dynobj->sections; s != NULL; s = s->next)
1954 {
1955 const char *name;
1956 bfd_boolean strip = FALSE;
1957
1958 if ((s->flags & SEC_LINKER_CREATED) == 0)
1959 continue;
1960
1961 /* It's OK to base decisions on the section name, because none
1962 of the dynobj section names depend upon the input files. */
1963 name = bfd_get_section_name (dynobj, s);
1964
1965 if (strncmp (name, ".rela", 5) == 0)
1966 {
1967 if (s->size == 0)
1968 {
1969 /* If we don't need this section, strip it from the
1970 output file. This is to handle .rela.bss and
1971 .rel.plt. We must create it in
1972 create_dynamic_sections, because it must be created
1973 before the linker maps input sections to output
1974 sections. The linker does that before
1975 adjust_dynamic_symbol is called, and it is that
1976 function which decides whether anything needs to go
1977 into these sections. */
1978 strip = TRUE;
1979 }
1980 else
1981 {
1982 /* We use the reloc_count field as a counter if we need
1983 to copy relocs into the output file. */
1984 s->reloc_count = 0;
1985 }
1986 }
1987 else if (s != htab->splt && s != htab->sgot)
1988 {
1989 /* It's not one of our sections, so don't allocate space. */
1990 continue;
1991 }
1992
1993 if (strip)
1994 {
1995 _bfd_strip_section_from_output (info, s);
1996 continue;
1997 }
1998
1999 /* Allocate memory for the section contents. */
2000 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
2001 Unused entries should be reclaimed before the section's contents
2002 are written out, but at the moment this does not happen. Thus in
2003 order to prevent writing out garbage, we initialise the section's
2004 contents to zero. */
2005 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2006 if (s->contents == NULL && s->size != 0)
2007 return FALSE;
2008 }
2009
2010 if (elf_hash_table (info)->dynamic_sections_created)
2011 {
2012 /* Add some entries to the .dynamic section. We fill in the
2013 values later, in elf32_sparc_finish_dynamic_sections, but we
2014 must add the entries now so that we get the correct size for
2015 the .dynamic section. The DT_DEBUG entry is filled in by the
2016 dynamic linker and used by the debugger. */
2017 #define add_dynamic_entry(TAG, VAL) \
2018 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2019
2020 if (info->executable)
2021 {
2022 if (!add_dynamic_entry (DT_DEBUG, 0))
2023 return FALSE;
2024 }
2025
2026 if (htab->srelplt->size != 0)
2027 {
2028 if (!add_dynamic_entry (DT_PLTGOT, 0)
2029 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2030 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2031 || !add_dynamic_entry (DT_JMPREL, 0))
2032 return FALSE;
2033 }
2034
2035 if (!add_dynamic_entry (DT_RELA, 0)
2036 || !add_dynamic_entry (DT_RELASZ, 0)
2037 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2038 return FALSE;
2039
2040 /* If any dynamic relocs apply to a read-only section,
2041 then we need a DT_TEXTREL entry. */
2042 if ((info->flags & DF_TEXTREL) == 0)
2043 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2044 (PTR) info);
2045
2046 if (info->flags & DF_TEXTREL)
2047 {
2048 if (!add_dynamic_entry (DT_TEXTREL, 0))
2049 return FALSE;
2050 }
2051 }
2052 #undef add_dynamic_entry
2053
2054 return TRUE;
2055 }
2056
2057 struct elf32_sparc_section_data
2058 {
2059 struct bfd_elf_section_data elf;
2060 unsigned int do_relax;
2061 };
2062
2063 #define sec_do_relax(sec) \
2064 ((struct elf32_sparc_section_data *) elf_section_data (sec))->do_relax
2065
2066 static bfd_boolean
2067 elf32_sparc_new_section_hook (abfd, sec)
2068 bfd *abfd;
2069 asection *sec;
2070 {
2071 struct elf32_sparc_section_data *sdata;
2072 bfd_size_type amt = sizeof (*sdata);
2073
2074 sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt);
2075 if (sdata == NULL)
2076 return FALSE;
2077 sec->used_by_bfd = (PTR) sdata;
2078
2079 return _bfd_elf_new_section_hook (abfd, sec);
2080 }
2081
2082 static bfd_boolean
2083 elf32_sparc_relax_section (abfd, section, link_info, again)
2084 bfd *abfd ATTRIBUTE_UNUSED;
2085 asection *section ATTRIBUTE_UNUSED;
2086 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
2087 bfd_boolean *again;
2088 {
2089 *again = FALSE;
2090 sec_do_relax (section) = 1;
2091 return TRUE;
2092 }
2093
2094 /* Return the base VMA address which should be subtracted from real addresses
2095 when resolving @dtpoff relocation.
2096 This is PT_TLS segment p_vaddr. */
2097
2098 static bfd_vma
2099 dtpoff_base (info)
2100 struct bfd_link_info *info;
2101 {
2102 /* If tls_sec is NULL, we should have signalled an error already. */
2103 if (elf_hash_table (info)->tls_sec == NULL)
2104 return 0;
2105 return elf_hash_table (info)->tls_sec->vma;
2106 }
2107
2108 /* Return the relocation value for @tpoff relocation
2109 if STT_TLS virtual address is ADDRESS. */
2110
2111 static bfd_vma
2112 tpoff (info, address)
2113 struct bfd_link_info *info;
2114 bfd_vma address;
2115 {
2116 struct elf_link_hash_table *htab = elf_hash_table (info);
2117
2118 /* If tls_sec is NULL, we should have signalled an error already. */
2119 if (htab->tls_sec == NULL)
2120 return 0;
2121 return address - htab->tls_size - htab->tls_sec->vma;
2122 }
2123
2124 /* Relocate a SPARC ELF section. */
2125
2126 static bfd_boolean
2127 elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
2128 contents, relocs, local_syms, local_sections)
2129 bfd *output_bfd;
2130 struct bfd_link_info *info;
2131 bfd *input_bfd;
2132 asection *input_section;
2133 bfd_byte *contents;
2134 Elf_Internal_Rela *relocs;
2135 Elf_Internal_Sym *local_syms;
2136 asection **local_sections;
2137 {
2138 struct elf32_sparc_link_hash_table *htab;
2139 Elf_Internal_Shdr *symtab_hdr;
2140 struct elf_link_hash_entry **sym_hashes;
2141 bfd_vma *local_got_offsets;
2142 bfd_vma got_base;
2143 asection *sreloc;
2144 Elf_Internal_Rela *rel;
2145 Elf_Internal_Rela *relend;
2146
2147 if (info->relocatable)
2148 return TRUE;
2149
2150 htab = elf32_sparc_hash_table (info);
2151 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2152 sym_hashes = elf_sym_hashes (input_bfd);
2153 local_got_offsets = elf_local_got_offsets (input_bfd);
2154
2155 if (elf_hash_table (info)->hgot == NULL)
2156 got_base = 0;
2157 else
2158 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2159
2160 sreloc = elf_section_data (input_section)->sreloc;
2161
2162 rel = relocs;
2163 relend = relocs + input_section->reloc_count;
2164 for (; rel < relend; rel++)
2165 {
2166 int r_type, tls_type;
2167 reloc_howto_type *howto;
2168 unsigned long r_symndx;
2169 struct elf_link_hash_entry *h;
2170 Elf_Internal_Sym *sym;
2171 asection *sec;
2172 bfd_vma relocation, off;
2173 bfd_reloc_status_type r;
2174 bfd_boolean is_plt = FALSE;
2175 bfd_boolean unresolved_reloc;
2176
2177 r_type = ELF32_R_TYPE (rel->r_info);
2178
2179 if (r_type == R_SPARC_GNU_VTINHERIT
2180 || r_type == R_SPARC_GNU_VTENTRY)
2181 continue;
2182
2183 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2184 {
2185 bfd_set_error (bfd_error_bad_value);
2186 return FALSE;
2187 }
2188 howto = _bfd_sparc_elf_howto_table + r_type;
2189
2190 /* This is a final link. */
2191 r_symndx = ELF32_R_SYM (rel->r_info);
2192 h = NULL;
2193 sym = NULL;
2194 sec = NULL;
2195 unresolved_reloc = FALSE;
2196 if (r_symndx < symtab_hdr->sh_info)
2197 {
2198 sym = local_syms + r_symndx;
2199 sec = local_sections[r_symndx];
2200 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2201 }
2202 else
2203 {
2204 bfd_boolean warned ATTRIBUTE_UNUSED;
2205
2206 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2207 r_symndx, symtab_hdr, sym_hashes,
2208 h, sec, relocation,
2209 unresolved_reloc, warned);
2210 }
2211
2212 switch (r_type)
2213 {
2214 case R_SPARC_GOT10:
2215 case R_SPARC_GOT13:
2216 case R_SPARC_GOT22:
2217 /* Relocation is to the entry for this symbol in the global
2218 offset table. */
2219 if (htab->sgot == NULL)
2220 abort ();
2221
2222 if (h != NULL)
2223 {
2224 bfd_boolean dyn;
2225
2226 off = h->got.offset;
2227 BFD_ASSERT (off != (bfd_vma) -1);
2228 dyn = elf_hash_table (info)->dynamic_sections_created;
2229
2230 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2231 || (info->shared
2232 && (info->symbolic
2233 || h->dynindx == -1
2234 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
2235 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
2236 {
2237 /* This is actually a static link, or it is a
2238 -Bsymbolic link and the symbol is defined
2239 locally, or the symbol was forced to be local
2240 because of a version file. We must initialize
2241 this entry in the global offset table. Since the
2242 offset must always be a multiple of 4, we use the
2243 least significant bit to record whether we have
2244 initialized it already.
2245
2246 When doing a dynamic link, we create a .rela.got
2247 relocation entry to initialize the value. This
2248 is done in the finish_dynamic_symbol routine. */
2249 if ((off & 1) != 0)
2250 off &= ~1;
2251 else
2252 {
2253 bfd_put_32 (output_bfd, relocation,
2254 htab->sgot->contents + off);
2255 h->got.offset |= 1;
2256 }
2257 }
2258 else
2259 unresolved_reloc = FALSE;
2260 }
2261 else
2262 {
2263 BFD_ASSERT (local_got_offsets != NULL
2264 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2265
2266 off = local_got_offsets[r_symndx];
2267
2268 /* The offset must always be a multiple of 4. We use
2269 the least significant bit to record whether we have
2270 already processed this entry. */
2271 if ((off & 1) != 0)
2272 off &= ~1;
2273 else
2274 {
2275
2276 if (info->shared)
2277 {
2278 asection *s;
2279 Elf_Internal_Rela outrel;
2280 bfd_byte *loc;
2281
2282 /* We need to generate a R_SPARC_RELATIVE reloc
2283 for the dynamic linker. */
2284 s = htab->srelgot;
2285 BFD_ASSERT (s != NULL);
2286
2287 outrel.r_offset = (htab->sgot->output_section->vma
2288 + htab->sgot->output_offset
2289 + off);
2290 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2291 outrel.r_addend = relocation;
2292 relocation = 0;
2293 loc = s->contents;
2294 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
2295 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2296 }
2297
2298 bfd_put_32 (output_bfd, relocation,
2299 htab->sgot->contents + off);
2300 local_got_offsets[r_symndx] |= 1;
2301 }
2302 }
2303 relocation = htab->sgot->output_offset + off - got_base;
2304 break;
2305
2306 case R_SPARC_PLT32:
2307 if (h == NULL || h->plt.offset == (bfd_vma) -1)
2308 {
2309 r_type = R_SPARC_32;
2310 goto r_sparc_plt32;
2311 }
2312 /* Fall through. */
2313 case R_SPARC_WPLT30:
2314 r_sparc_wplt30:
2315 /* Relocation is to the entry for this symbol in the
2316 procedure linkage table. */
2317
2318 /* The Solaris native assembler will generate a WPLT30 reloc
2319 for a local symbol if you assemble a call from one
2320 section to another when using -K pic. We treat it as
2321 WDISP30. */
2322 if (h == NULL)
2323 break;
2324
2325 if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
2326 {
2327 /* We didn't make a PLT entry for this symbol. This
2328 happens when statically linking PIC code, or when
2329 using -Bsymbolic. */
2330 break;
2331 }
2332
2333 relocation = (htab->splt->output_section->vma
2334 + htab->splt->output_offset
2335 + h->plt.offset);
2336 unresolved_reloc = FALSE;
2337 if (r_type == R_SPARC_PLT32)
2338 {
2339 r_type = R_SPARC_32;
2340 is_plt = TRUE;
2341 goto r_sparc_plt32;
2342 }
2343 break;
2344
2345 case R_SPARC_PC10:
2346 case R_SPARC_PC22:
2347 if (h != NULL
2348 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2349 break;
2350 /* Fall through. */
2351 case R_SPARC_DISP8:
2352 case R_SPARC_DISP16:
2353 case R_SPARC_DISP32:
2354 case R_SPARC_WDISP30:
2355 case R_SPARC_WDISP22:
2356 case R_SPARC_WDISP19:
2357 case R_SPARC_WDISP16:
2358 case R_SPARC_8:
2359 case R_SPARC_16:
2360 case R_SPARC_32:
2361 case R_SPARC_HI22:
2362 case R_SPARC_22:
2363 case R_SPARC_13:
2364 case R_SPARC_LO10:
2365 case R_SPARC_UA16:
2366 case R_SPARC_UA32:
2367 r_sparc_plt32:
2368 /* r_symndx will be zero only for relocs against symbols
2369 from removed linkonce sections, or sections discarded by
2370 a linker script. */
2371 if (r_symndx == 0
2372 || (input_section->flags & SEC_ALLOC) == 0)
2373 break;
2374
2375 if ((info->shared
2376 && (h == NULL
2377 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2378 || h->root.type != bfd_link_hash_undefweak)
2379 && (! howto->pc_relative
2380 || (h != NULL
2381 && h->dynindx != -1
2382 && (! info->symbolic
2383 || (h->elf_link_hash_flags
2384 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2385 || (!info->shared
2386 && h != NULL
2387 && h->dynindx != -1
2388 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2389 && (((h->elf_link_hash_flags
2390 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2391 && (h->elf_link_hash_flags
2392 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2393 || h->root.type == bfd_link_hash_undefweak
2394 || h->root.type == bfd_link_hash_undefined)))
2395 {
2396 Elf_Internal_Rela outrel;
2397 bfd_byte *loc;
2398 bfd_boolean skip, relocate = FALSE;
2399
2400 /* When generating a shared object, these relocations
2401 are copied into the output file to be resolved at run
2402 time. */
2403
2404 BFD_ASSERT (sreloc != NULL);
2405
2406 skip = FALSE;
2407
2408 outrel.r_offset =
2409 _bfd_elf_section_offset (output_bfd, info, input_section,
2410 rel->r_offset);
2411 if (outrel.r_offset == (bfd_vma) -1)
2412 skip = TRUE;
2413 else if (outrel.r_offset == (bfd_vma) -2)
2414 skip = TRUE, relocate = TRUE;
2415 outrel.r_offset += (input_section->output_section->vma
2416 + input_section->output_offset);
2417
2418 /* Optimize unaligned reloc usage now that we know where
2419 it finally resides. */
2420 switch (r_type)
2421 {
2422 case R_SPARC_16:
2423 if (outrel.r_offset & 1)
2424 r_type = R_SPARC_UA16;
2425 break;
2426 case R_SPARC_UA16:
2427 if (!(outrel.r_offset & 1))
2428 r_type = R_SPARC_16;
2429 break;
2430 case R_SPARC_32:
2431 if (outrel.r_offset & 3)
2432 r_type = R_SPARC_UA32;
2433 break;
2434 case R_SPARC_UA32:
2435 if (!(outrel.r_offset & 3))
2436 r_type = R_SPARC_32;
2437 break;
2438 case R_SPARC_DISP8:
2439 case R_SPARC_DISP16:
2440 case R_SPARC_DISP32:
2441 /* If the symbol is not dynamic, we should not keep
2442 a dynamic relocation. But an .rela.* slot has been
2443 allocated for it, output R_SPARC_NONE.
2444 FIXME: Add code tracking needed dynamic relocs as
2445 e.g. i386 has. */
2446 if (h->dynindx == -1)
2447 skip = TRUE, relocate = TRUE;
2448 break;
2449 }
2450
2451 if (skip)
2452 memset (&outrel, 0, sizeof outrel);
2453 /* h->dynindx may be -1 if the symbol was marked to
2454 become local. */
2455 else if (h != NULL && ! is_plt
2456 && ((! info->symbolic && h->dynindx != -1)
2457 || (h->elf_link_hash_flags
2458 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2459 {
2460 BFD_ASSERT (h->dynindx != -1);
2461 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2462 outrel.r_addend = rel->r_addend;
2463 }
2464 else
2465 {
2466 if (r_type == R_SPARC_32)
2467 {
2468 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2469 outrel.r_addend = relocation + rel->r_addend;
2470 }
2471 else
2472 {
2473 long indx;
2474
2475 if (is_plt)
2476 sec = htab->splt;
2477
2478 if (bfd_is_abs_section (sec))
2479 indx = 0;
2480 else if (sec == NULL || sec->owner == NULL)
2481 {
2482 bfd_set_error (bfd_error_bad_value);
2483 return FALSE;
2484 }
2485 else
2486 {
2487 asection *osec;
2488
2489 osec = sec->output_section;
2490 indx = elf_section_data (osec)->dynindx;
2491
2492 /* FIXME: we really should be able to link non-pic
2493 shared libraries. */
2494 if (indx == 0)
2495 {
2496 BFD_FAIL ();
2497 (*_bfd_error_handler)
2498 (_("%s: probably compiled without -fPIC?"),
2499 bfd_archive_filename (input_bfd));
2500 bfd_set_error (bfd_error_bad_value);
2501 return FALSE;
2502 }
2503 }
2504
2505 outrel.r_info = ELF32_R_INFO (indx, r_type);
2506 outrel.r_addend = relocation + rel->r_addend;
2507 }
2508 }
2509
2510 loc = sreloc->contents;
2511 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2512 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2513
2514 /* This reloc will be computed at runtime, so there's no
2515 need to do anything now. */
2516 if (! relocate)
2517 continue;
2518 }
2519 break;
2520
2521 case R_SPARC_TLS_GD_HI22:
2522 if (! elf32_sparc_tdata (input_bfd)->has_tlsgd)
2523 {
2524 /* R_SPARC_REV32 used the same reloc number as
2525 R_SPARC_TLS_GD_HI22. */
2526 r_type = R_SPARC_REV32;
2527 break;
2528 }
2529 /* Fall through */
2530
2531 case R_SPARC_TLS_GD_LO10:
2532 case R_SPARC_TLS_IE_HI22:
2533 case R_SPARC_TLS_IE_LO10:
2534 r_type = elf32_sparc_tls_transition (info, input_bfd, r_type,
2535 h == NULL);
2536 tls_type = GOT_UNKNOWN;
2537 if (h == NULL && local_got_offsets)
2538 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2539 else if (h != NULL)
2540 {
2541 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2542 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
2543 switch (ELF32_R_TYPE (rel->r_info))
2544 {
2545 case R_SPARC_TLS_GD_HI22:
2546 case R_SPARC_TLS_IE_HI22:
2547 r_type = R_SPARC_TLS_LE_HIX22;
2548 break;
2549 default:
2550 r_type = R_SPARC_TLS_LE_LOX10;
2551 break;
2552 }
2553 }
2554 if (tls_type == GOT_TLS_IE)
2555 switch (r_type)
2556 {
2557 case R_SPARC_TLS_GD_HI22:
2558 r_type = R_SPARC_TLS_IE_HI22;
2559 break;
2560 case R_SPARC_TLS_GD_LO10:
2561 r_type = R_SPARC_TLS_IE_LO10;
2562 break;
2563 }
2564
2565 if (r_type == R_SPARC_TLS_LE_HIX22)
2566 {
2567 relocation = tpoff (info, relocation);
2568 break;
2569 }
2570 if (r_type == R_SPARC_TLS_LE_LOX10)
2571 {
2572 /* Change add into xor. */
2573 relocation = tpoff (info, relocation);
2574 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
2575 contents + rel->r_offset)
2576 | 0x80182000), contents + rel->r_offset);
2577 break;
2578 }
2579
2580 if (h != NULL)
2581 {
2582 off = h->got.offset;
2583 h->got.offset |= 1;
2584 }
2585 else
2586 {
2587 BFD_ASSERT (local_got_offsets != NULL);
2588 off = local_got_offsets[r_symndx];
2589 local_got_offsets[r_symndx] |= 1;
2590 }
2591
2592 r_sparc_tlsldm:
2593 if (htab->sgot == NULL)
2594 abort ();
2595
2596 if ((off & 1) != 0)
2597 off &= ~1;
2598 else
2599 {
2600 Elf_Internal_Rela outrel;
2601 Elf32_External_Rela *loc;
2602 int dr_type, indx;
2603
2604 if (htab->srelgot == NULL)
2605 abort ();
2606
2607 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
2608 outrel.r_offset = (htab->sgot->output_section->vma
2609 + htab->sgot->output_offset + off);
2610 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2611 if (r_type == R_SPARC_TLS_IE_HI22
2612 || r_type == R_SPARC_TLS_IE_LO10)
2613 dr_type = R_SPARC_TLS_TPOFF32;
2614 else
2615 dr_type = R_SPARC_TLS_DTPMOD32;
2616 if (dr_type == R_SPARC_TLS_TPOFF32 && indx == 0)
2617 outrel.r_addend = relocation - dtpoff_base (info);
2618 else
2619 outrel.r_addend = 0;
2620 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2621 loc = (Elf32_External_Rela *) htab->srelgot->contents;
2622 loc += htab->srelgot->reloc_count++;
2623 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2624 (bfd_byte *) loc);
2625
2626 if (r_type == R_SPARC_TLS_GD_HI22
2627 || r_type == R_SPARC_TLS_GD_LO10)
2628 {
2629 if (indx == 0)
2630 {
2631 BFD_ASSERT (! unresolved_reloc);
2632 bfd_put_32 (output_bfd,
2633 relocation - dtpoff_base (info),
2634 htab->sgot->contents + off + 4);
2635 }
2636 else
2637 {
2638 bfd_put_32 (output_bfd, 0,
2639 htab->sgot->contents + off + 4);
2640 outrel.r_info = ELF32_R_INFO (indx,
2641 R_SPARC_TLS_DTPOFF32);
2642 outrel.r_offset += 4;
2643 htab->srelgot->reloc_count++;
2644 loc++;
2645 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2646 (bfd_byte *) loc);
2647 }
2648 }
2649 else if (dr_type == R_SPARC_TLS_DTPMOD32)
2650 {
2651 bfd_put_32 (output_bfd, 0,
2652 htab->sgot->contents + off + 4);
2653 }
2654 }
2655
2656 if (off >= (bfd_vma) -2)
2657 abort ();
2658
2659 relocation = htab->sgot->output_offset + off - got_base;
2660 unresolved_reloc = FALSE;
2661 howto = _bfd_sparc_elf_howto_table + r_type;
2662 break;
2663
2664 case R_SPARC_TLS_LDM_HI22:
2665 case R_SPARC_TLS_LDM_LO10:
2666 if (! info->shared)
2667 {
2668 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2669 continue;
2670 }
2671 off = htab->tls_ldm_got.offset;
2672 htab->tls_ldm_got.offset |= 1;
2673 goto r_sparc_tlsldm;
2674
2675 case R_SPARC_TLS_LDO_HIX22:
2676 case R_SPARC_TLS_LDO_LOX10:
2677 if (info->shared)
2678 relocation -= dtpoff_base (info);
2679 else
2680 relocation = tpoff (info, relocation);
2681 break;
2682
2683 case R_SPARC_TLS_LE_HIX22:
2684 case R_SPARC_TLS_LE_LOX10:
2685 if (info->shared)
2686 {
2687 Elf_Internal_Rela outrel;
2688 bfd_boolean skip, relocate = FALSE;
2689
2690 BFD_ASSERT (sreloc != NULL);
2691 skip = FALSE;
2692 outrel.r_offset =
2693 _bfd_elf_section_offset (output_bfd, info, input_section,
2694 rel->r_offset);
2695 if (outrel.r_offset == (bfd_vma) -1)
2696 skip = TRUE;
2697 else if (outrel.r_offset == (bfd_vma) -2)
2698 skip = TRUE, relocate = TRUE;
2699 outrel.r_offset += (input_section->output_section->vma
2700 + input_section->output_offset);
2701 if (skip)
2702 memset (&outrel, 0, sizeof outrel);
2703 else
2704 {
2705 outrel.r_info = ELF32_R_INFO (0, r_type);
2706 outrel.r_addend = relocation - dtpoff_base (info)
2707 + rel->r_addend;
2708 }
2709
2710 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2711 (bfd_byte *) (((Elf32_External_Rela *)
2712 sreloc->contents)
2713 + sreloc->reloc_count));
2714 ++sreloc->reloc_count;
2715 continue;
2716 }
2717 relocation = tpoff (info, relocation);
2718 break;
2719
2720 case R_SPARC_TLS_LDM_CALL:
2721 if (! info->shared)
2722 {
2723 /* mov %g0, %o0 */
2724 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
2725 continue;
2726 }
2727 /* Fall through */
2728
2729 case R_SPARC_TLS_GD_CALL:
2730 tls_type = GOT_UNKNOWN;
2731 if (h == NULL && local_got_offsets)
2732 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2733 else if (h != NULL)
2734 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2735 if (! info->shared
2736 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
2737 {
2738 bfd_vma insn;
2739
2740 if (!info->shared && (h == NULL || h->dynindx == -1))
2741 {
2742 /* GD -> LE */
2743 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2744 continue;
2745 }
2746
2747 /* GD -> IE */
2748 if (rel + 1 < relend
2749 && ELF32_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
2750 && rel[1].r_offset == rel->r_offset + 4
2751 && ELF32_R_SYM (rel[1].r_info) == r_symndx
2752 && (((insn = bfd_get_32 (input_bfd,
2753 contents + rel[1].r_offset))
2754 >> 25) & 0x1f) == 8)
2755 {
2756 /* We have
2757 call __tls_get_addr, %tgd_call(foo)
2758 add %reg1, %reg2, %o0, %tgd_add(foo)
2759 and change it into IE:
2760 ld [%reg1 + %reg2], %o0, %tie_ld(foo)
2761 add %g7, %o0, %o0, %tie_add(foo).
2762 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
2763 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2. */
2764 bfd_put_32 (output_bfd, insn | 0xc0000000,
2765 contents + rel->r_offset);
2766 bfd_put_32 (output_bfd, 0x9001c008,
2767 contents + rel->r_offset + 4);
2768 rel++;
2769 continue;
2770 }
2771
2772 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
2773 continue;
2774 }
2775
2776 h = (struct elf_link_hash_entry *)
2777 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
2778 FALSE, TRUE);
2779 BFD_ASSERT (h != NULL);
2780 r_type = R_SPARC_WPLT30;
2781 howto = _bfd_sparc_elf_howto_table + r_type;
2782 goto r_sparc_wplt30;
2783
2784 case R_SPARC_TLS_GD_ADD:
2785 tls_type = GOT_UNKNOWN;
2786 if (h == NULL && local_got_offsets)
2787 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2788 else if (h != NULL)
2789 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2790 if (! info->shared || tls_type == GOT_TLS_IE)
2791 {
2792 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
2793 changed into IE:
2794 ld [%reg1 + %reg2], %reg3, %tie_ld(foo)
2795 or LE:
2796 add %g7, %reg2, %reg3. */
2797 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2798 if ((h != NULL && h->dynindx != -1) || info->shared)
2799 relocation = insn | 0xc0000000;
2800 else
2801 relocation = (insn & ~0x7c000) | 0x1c000;
2802 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2803 }
2804 continue;
2805
2806 case R_SPARC_TLS_LDM_ADD:
2807 if (! info->shared)
2808 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2809 continue;
2810
2811 case R_SPARC_TLS_LDO_ADD:
2812 if (! info->shared)
2813 {
2814 /* Change rs1 into %g7. */
2815 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2816 insn = (insn & ~0x7c000) | 0x1c000;
2817 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2818 }
2819 continue;
2820
2821 case R_SPARC_TLS_IE_LD:
2822 case R_SPARC_TLS_IE_LDX:
2823 if (! info->shared && (h == NULL || h->dynindx == -1))
2824 {
2825 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2826 int rs2 = insn & 0x1f;
2827 int rd = (insn >> 25) & 0x1f;
2828
2829 if (rs2 == rd)
2830 relocation = SPARC_NOP;
2831 else
2832 relocation = 0x80100000 | (insn & 0x3e00001f);
2833 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2834 }
2835 continue;
2836
2837 case R_SPARC_TLS_IE_ADD:
2838 /* Totally useless relocation. */
2839 continue;
2840
2841 case R_SPARC_TLS_DTPOFF32:
2842 relocation -= dtpoff_base (info);
2843 break;
2844
2845 default:
2846 break;
2847 }
2848
2849 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2850 because such sections are not SEC_ALLOC and thus ld.so will
2851 not process them. */
2852 if (unresolved_reloc
2853 && !((input_section->flags & SEC_DEBUGGING) != 0
2854 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
2855 (*_bfd_error_handler)
2856 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
2857 bfd_archive_filename (input_bfd),
2858 bfd_get_section_name (input_bfd, input_section),
2859 (long) rel->r_offset,
2860 h->root.root.string);
2861
2862 r = bfd_reloc_continue;
2863 if (r_type == R_SPARC_WDISP16)
2864 {
2865 bfd_vma x;
2866
2867 relocation += rel->r_addend;
2868 relocation -= (input_section->output_section->vma
2869 + input_section->output_offset);
2870 relocation -= rel->r_offset;
2871
2872 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2873 x |= ((((relocation >> 2) & 0xc000) << 6)
2874 | ((relocation >> 2) & 0x3fff));
2875 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2876
2877 if ((bfd_signed_vma) relocation < - 0x40000
2878 || (bfd_signed_vma) relocation > 0x3ffff)
2879 r = bfd_reloc_overflow;
2880 else
2881 r = bfd_reloc_ok;
2882 }
2883 else if (r_type == R_SPARC_REV32)
2884 {
2885 bfd_vma x;
2886
2887 relocation = relocation + rel->r_addend;
2888
2889 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2890 x = x + relocation;
2891 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
2892 r = bfd_reloc_ok;
2893 }
2894 else if (r_type == R_SPARC_TLS_LDO_HIX22
2895 || r_type == R_SPARC_TLS_LE_HIX22)
2896 {
2897 bfd_vma x;
2898
2899 relocation += rel->r_addend;
2900 relocation = relocation ^ 0xffffffff;
2901
2902 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2903 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
2904 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2905 r = bfd_reloc_ok;
2906 }
2907 else if (r_type == R_SPARC_TLS_LDO_LOX10
2908 || r_type == R_SPARC_TLS_LE_LOX10)
2909 {
2910 bfd_vma x;
2911
2912 relocation += rel->r_addend;
2913 relocation = (relocation & 0x3ff) | 0x1c00;
2914
2915 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2916 x = (x & ~(bfd_vma) 0x1fff) | relocation;
2917 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2918
2919 r = bfd_reloc_ok;
2920 }
2921 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
2922 && sec_do_relax (input_section)
2923 && rel->r_offset + 4 < input_section->size)
2924 {
2925 #define G0 0
2926 #define O7 15
2927 #define XCC (2 << 20)
2928 #define COND(x) (((x)&0xf)<<25)
2929 #define CONDA COND(0x8)
2930 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2931 #define INSN_BA (F2(0,2) | CONDA)
2932 #define INSN_OR F3(2, 0x2, 0)
2933 #define INSN_NOP F2(0,4)
2934
2935 bfd_vma x, y;
2936
2937 /* If the instruction is a call with either:
2938 restore
2939 arithmetic instruction with rd == %o7
2940 where rs1 != %o7 and rs2 if it is register != %o7
2941 then we can optimize if the call destination is near
2942 by changing the call into a branch always. */
2943 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2944 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
2945 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
2946 {
2947 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
2948 || ((y & OP3(0x28)) == 0 /* arithmetic */
2949 && (y & RD(~0)) == RD(O7)))
2950 && (y & RS1(~0)) != RS1(O7)
2951 && ((y & F3I(~0))
2952 || (y & RS2(~0)) != RS2(O7)))
2953 {
2954 bfd_vma reloc;
2955
2956 reloc = relocation + rel->r_addend - rel->r_offset;
2957 reloc -= (input_section->output_section->vma
2958 + input_section->output_offset);
2959
2960 /* Ensure the reloc fits into simm22. */
2961 if ((reloc & 3) == 0
2962 && ((reloc & ~(bfd_vma)0x7fffff) == 0
2963 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
2964 {
2965 reloc >>= 2;
2966
2967 /* Check whether it fits into simm19 on v9. */
2968 if (((reloc & 0x3c0000) == 0
2969 || (reloc & 0x3c0000) == 0x3c0000)
2970 && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
2971 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
2972 else
2973 x = INSN_BA | (reloc & 0x3fffff); /* ba */
2974 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2975 r = bfd_reloc_ok;
2976 if (rel->r_offset >= 4
2977 && (y & (0xffffffff ^ RS1(~0)))
2978 == (INSN_OR | RD(O7) | RS2(G0)))
2979 {
2980 bfd_vma z;
2981 unsigned int reg;
2982
2983 z = bfd_get_32 (input_bfd,
2984 contents + rel->r_offset - 4);
2985 if ((z & (0xffffffff ^ RD(~0)))
2986 != (INSN_OR | RS1(O7) | RS2(G0)))
2987 break;
2988
2989 /* The sequence was
2990 or %o7, %g0, %rN
2991 call foo
2992 or %rN, %g0, %o7
2993
2994 If call foo was replaced with ba, replace
2995 or %rN, %g0, %o7 with nop. */
2996
2997 reg = (y & RS1(~0)) >> 14;
2998 if (reg != ((z & RD(~0)) >> 25)
2999 || reg == G0 || reg == O7)
3000 break;
3001
3002 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
3003 contents + rel->r_offset + 4);
3004 }
3005
3006 }
3007 }
3008 }
3009 }
3010
3011 if (r == bfd_reloc_continue)
3012 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3013 contents, rel->r_offset,
3014 relocation, rel->r_addend);
3015
3016 if (r != bfd_reloc_ok)
3017 {
3018 switch (r)
3019 {
3020 default:
3021 case bfd_reloc_outofrange:
3022 abort ();
3023 case bfd_reloc_overflow:
3024 {
3025 const char *name;
3026
3027 if (h != NULL)
3028 name = h->root.root.string;
3029 else
3030 {
3031 name = bfd_elf_string_from_elf_section (input_bfd,
3032 symtab_hdr->sh_link,
3033 sym->st_name);
3034 if (name == NULL)
3035 return FALSE;
3036 if (*name == '\0')
3037 name = bfd_section_name (input_bfd, sec);
3038 }
3039 if (! ((*info->callbacks->reloc_overflow)
3040 (info, name, howto->name, (bfd_vma) 0,
3041 input_bfd, input_section, rel->r_offset)))
3042 return FALSE;
3043 }
3044 break;
3045 }
3046 }
3047 }
3048
3049 return TRUE;
3050 }
3051
3052 /* Finish up dynamic symbol handling. We set the contents of various
3053 dynamic sections here. */
3054
3055 static bfd_boolean
3056 elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym)
3057 bfd *output_bfd;
3058 struct bfd_link_info *info;
3059 struct elf_link_hash_entry *h;
3060 Elf_Internal_Sym *sym;
3061 {
3062 bfd *dynobj;
3063 struct elf32_sparc_link_hash_table *htab;
3064
3065 htab = elf32_sparc_hash_table (info);
3066 dynobj = htab->elf.dynobj;
3067
3068 if (h->plt.offset != (bfd_vma) -1)
3069 {
3070 asection *splt;
3071 asection *srela;
3072 Elf_Internal_Rela rela;
3073 bfd_byte *loc;
3074
3075 /* This symbol has an entry in the procedure linkage table. Set
3076 it up. */
3077
3078 BFD_ASSERT (h->dynindx != -1);
3079
3080 splt = htab->splt;
3081 srela = htab->srelplt;
3082 BFD_ASSERT (splt != NULL && srela != NULL);
3083
3084 /* Fill in the entry in the procedure linkage table. */
3085 bfd_put_32 (output_bfd,
3086 PLT_ENTRY_WORD0 + h->plt.offset,
3087 splt->contents + h->plt.offset);
3088 bfd_put_32 (output_bfd,
3089 (PLT_ENTRY_WORD1
3090 + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)),
3091 splt->contents + h->plt.offset + 4);
3092 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3093 splt->contents + h->plt.offset + 8);
3094
3095 /* Fill in the entry in the .rela.plt section. */
3096 rela.r_offset = (splt->output_section->vma
3097 + splt->output_offset
3098 + h->plt.offset);
3099 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
3100 rela.r_addend = 0;
3101 loc = srela->contents;
3102 loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela);
3103 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3104
3105 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3106 {
3107 /* Mark the symbol as undefined, rather than as defined in
3108 the .plt section. Leave the value alone. */
3109 sym->st_shndx = SHN_UNDEF;
3110 /* If the symbol is weak, we do need to clear the value.
3111 Otherwise, the PLT entry would provide a definition for
3112 the symbol even if the symbol wasn't defined anywhere,
3113 and so the symbol would never be NULL. */
3114 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
3115 == 0)
3116 sym->st_value = 0;
3117 }
3118 }
3119
3120 if (h->got.offset != (bfd_vma) -1
3121 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_GD
3122 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_IE)
3123 {
3124 asection *sgot;
3125 asection *srela;
3126 Elf_Internal_Rela rela;
3127 bfd_byte *loc;
3128
3129 /* This symbol has an entry in the global offset table. Set it
3130 up. */
3131
3132 sgot = htab->sgot;
3133 srela = htab->srelgot;
3134 BFD_ASSERT (sgot != NULL && srela != NULL);
3135
3136 rela.r_offset = (sgot->output_section->vma
3137 + sgot->output_offset
3138 + (h->got.offset &~ (bfd_vma) 1));
3139
3140 /* If this is a -Bsymbolic link, and the symbol is defined
3141 locally, we just want to emit a RELATIVE reloc. Likewise if
3142 the symbol was forced to be local because of a version file.
3143 The entry in the global offset table will already have been
3144 initialized in the relocate_section function. */
3145 if (info->shared
3146 && (info->symbolic || h->dynindx == -1)
3147 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3148 {
3149 asection *sec = h->root.u.def.section;
3150 rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
3151 rela.r_addend = (h->root.u.def.value
3152 + sec->output_section->vma
3153 + sec->output_offset);
3154 }
3155 else
3156 {
3157 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
3158 rela.r_addend = 0;
3159 }
3160
3161 bfd_put_32 (output_bfd, (bfd_vma) 0,
3162 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
3163 loc = srela->contents;
3164 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3165 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3166 }
3167
3168 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3169 {
3170 asection *s;
3171 Elf_Internal_Rela rela;
3172 bfd_byte *loc;
3173
3174 /* This symbols needs a copy reloc. Set it up. */
3175
3176 BFD_ASSERT (h->dynindx != -1);
3177
3178 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3179 ".rela.bss");
3180 BFD_ASSERT (s != NULL);
3181
3182 rela.r_offset = (h->root.u.def.value
3183 + h->root.u.def.section->output_section->vma
3184 + h->root.u.def.section->output_offset);
3185 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY);
3186 rela.r_addend = 0;
3187 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3188 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3189 }
3190
3191 /* Mark some specially defined symbols as absolute. */
3192 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3193 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3194 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3195 sym->st_shndx = SHN_ABS;
3196
3197 return TRUE;
3198 }
3199
3200 /* Finish up the dynamic sections. */
3201
3202 static bfd_boolean
3203 elf32_sparc_finish_dynamic_sections (output_bfd, info)
3204 bfd *output_bfd;
3205 struct bfd_link_info *info;
3206 {
3207 bfd *dynobj;
3208 asection *sdyn;
3209 struct elf32_sparc_link_hash_table *htab;
3210
3211 htab = elf32_sparc_hash_table (info);
3212 dynobj = htab->elf.dynobj;
3213
3214 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3215
3216 if (elf_hash_table (info)->dynamic_sections_created)
3217 {
3218 asection *splt;
3219 Elf32_External_Dyn *dyncon, *dynconend;
3220
3221 splt = bfd_get_section_by_name (dynobj, ".plt");
3222 BFD_ASSERT (splt != NULL && sdyn != NULL);
3223
3224 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3225 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3226 for (; dyncon < dynconend; dyncon++)
3227 {
3228 Elf_Internal_Dyn dyn;
3229 const char *name;
3230 bfd_boolean size;
3231
3232 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3233
3234 switch (dyn.d_tag)
3235 {
3236 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
3237 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
3238 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
3239 default: name = NULL; size = FALSE; break;
3240 }
3241
3242 if (name != NULL)
3243 {
3244 asection *s;
3245
3246 s = bfd_get_section_by_name (output_bfd, name);
3247 if (s == NULL)
3248 dyn.d_un.d_val = 0;
3249 else
3250 {
3251 if (! size)
3252 dyn.d_un.d_ptr = s->vma;
3253 else
3254 dyn.d_un.d_val = s->size;
3255 }
3256 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3257 }
3258 }
3259
3260 /* Clear the first four entries in the procedure linkage table,
3261 and put a nop in the last four bytes. */
3262 if (splt->size > 0)
3263 {
3264 memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
3265 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
3266 splt->contents + splt->size - 4);
3267 }
3268
3269 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0;
3270 }
3271
3272 /* Set the first entry in the global offset table to the address of
3273 the dynamic section. */
3274 if (htab->sgot && htab->sgot->size > 0)
3275 {
3276 if (sdyn == NULL)
3277 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents);
3278 else
3279 bfd_put_32 (output_bfd,
3280 sdyn->output_section->vma + sdyn->output_offset,
3281 htab->sgot->contents);
3282 }
3283
3284 if (htab->sgot)
3285 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3286
3287 return TRUE;
3288 }
3289 \f
3290 /* Functions for dealing with the e_flags field.
3291
3292 We don't define set_private_flags or copy_private_bfd_data because
3293 the only currently defined values are based on the bfd mach number,
3294 so we use the latter instead and defer setting e_flags until the
3295 file is written out. */
3296
3297 /* Merge backend specific data from an object file to the output
3298 object file when linking. */
3299
3300 static bfd_boolean
3301 elf32_sparc_merge_private_bfd_data (ibfd, obfd)
3302 bfd *ibfd;
3303 bfd *obfd;
3304 {
3305 bfd_boolean error;
3306 /* FIXME: This should not be static. */
3307 static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
3308
3309 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3310 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3311 return TRUE;
3312
3313 error = FALSE;
3314
3315 if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9)
3316 {
3317 error = TRUE;
3318 (*_bfd_error_handler)
3319 (_("%s: compiled for a 64 bit system and target is 32 bit"),
3320 bfd_archive_filename (ibfd));
3321 }
3322 else if ((ibfd->flags & DYNAMIC) == 0)
3323 {
3324 if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3325 bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
3326 }
3327
3328 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
3329 != previous_ibfd_e_flags)
3330 && previous_ibfd_e_flags != (unsigned long) -1)
3331 {
3332 (*_bfd_error_handler)
3333 (_("%s: linking little endian files with big endian files"),
3334 bfd_archive_filename (ibfd));
3335 error = TRUE;
3336 }
3337 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
3338
3339 if (error)
3340 {
3341 bfd_set_error (bfd_error_bad_value);
3342 return FALSE;
3343 }
3344
3345 return TRUE;
3346 }
3347 \f
3348 /* Set the right machine number. */
3349
3350 static bfd_boolean
3351 elf32_sparc_object_p (abfd)
3352 bfd *abfd;
3353 {
3354 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
3355 {
3356 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
3357 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3358 bfd_mach_sparc_v8plusb);
3359 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
3360 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3361 bfd_mach_sparc_v8plusa);
3362 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
3363 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3364 bfd_mach_sparc_v8plus);
3365 else
3366 return FALSE;
3367 }
3368 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
3369 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3370 bfd_mach_sparc_sparclite_le);
3371 else
3372 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
3373 }
3374
3375 /* The final processing done just before writing out the object file.
3376 We need to set the e_machine field appropriately. */
3377
3378 static void
3379 elf32_sparc_final_write_processing (abfd, linker)
3380 bfd *abfd;
3381 bfd_boolean linker ATTRIBUTE_UNUSED;
3382 {
3383 switch (bfd_get_mach (abfd))
3384 {
3385 case bfd_mach_sparc :
3386 break; /* nothing to do */
3387 case bfd_mach_sparc_v8plus :
3388 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3389 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3390 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
3391 break;
3392 case bfd_mach_sparc_v8plusa :
3393 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3394 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3395 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
3396 break;
3397 case bfd_mach_sparc_v8plusb :
3398 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3399 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3400 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1
3401 | EF_SPARC_SUN_US3;
3402 break;
3403 case bfd_mach_sparc_sparclite_le :
3404 elf_elfheader (abfd)->e_machine = EM_SPARC;
3405 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
3406 break;
3407 default :
3408 abort ();
3409 break;
3410 }
3411 }
3412
3413 static enum elf_reloc_type_class
3414 elf32_sparc_reloc_type_class (rela)
3415 const Elf_Internal_Rela *rela;
3416 {
3417 switch ((int) ELF32_R_TYPE (rela->r_info))
3418 {
3419 case R_SPARC_RELATIVE:
3420 return reloc_class_relative;
3421 case R_SPARC_JMP_SLOT:
3422 return reloc_class_plt;
3423 case R_SPARC_COPY:
3424 return reloc_class_copy;
3425 default:
3426 return reloc_class_normal;
3427 }
3428 }
3429
3430 /* Return address for Ith PLT stub in section PLT, for relocation REL
3431 or (bfd_vma) -1 if it should not be included. */
3432
3433 static bfd_vma
3434 elf32_sparc_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
3435 const asection *plt ATTRIBUTE_UNUSED,
3436 const arelent *rel)
3437 {
3438 return rel->address;
3439 }
3440 \f
3441 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
3442 #define TARGET_BIG_NAME "elf32-sparc"
3443 #define ELF_ARCH bfd_arch_sparc
3444 #define ELF_MACHINE_CODE EM_SPARC
3445 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
3446 #define ELF_MAXPAGESIZE 0x10000
3447
3448 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
3449 #define bfd_elf32_bfd_link_hash_table_create \
3450 elf32_sparc_link_hash_table_create
3451 #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section
3452 #define bfd_elf32_new_section_hook elf32_sparc_new_section_hook
3453 #define elf_info_to_howto elf32_sparc_info_to_howto
3454 #define elf_backend_copy_indirect_symbol \
3455 elf32_sparc_copy_indirect_symbol
3456 #define elf_backend_create_dynamic_sections \
3457 elf32_sparc_create_dynamic_sections
3458 #define elf_backend_check_relocs elf32_sparc_check_relocs
3459 #define elf_backend_adjust_dynamic_symbol \
3460 elf32_sparc_adjust_dynamic_symbol
3461 #define elf_backend_size_dynamic_sections \
3462 elf32_sparc_size_dynamic_sections
3463 #define elf_backend_relocate_section elf32_sparc_relocate_section
3464 #define elf_backend_finish_dynamic_symbol \
3465 elf32_sparc_finish_dynamic_symbol
3466 #define elf_backend_finish_dynamic_sections \
3467 elf32_sparc_finish_dynamic_sections
3468 #define bfd_elf32_bfd_merge_private_bfd_data \
3469 elf32_sparc_merge_private_bfd_data
3470 #define bfd_elf32_mkobject elf32_sparc_mkobject
3471 #define elf_backend_object_p elf32_sparc_object_p
3472 #define elf_backend_final_write_processing \
3473 elf32_sparc_final_write_processing
3474 #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
3475 #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
3476 #define elf_backend_grok_psinfo elf32_sparc_grok_psinfo
3477 #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
3478 #define elf_backend_plt_sym_val elf32_sparc_plt_sym_val
3479
3480 #define elf_backend_can_gc_sections 1
3481 #define elf_backend_can_refcount 1
3482 #define elf_backend_want_got_plt 0
3483 #define elf_backend_plt_readonly 0
3484 #define elf_backend_want_plt_sym 1
3485 #define elf_backend_got_header_size 4
3486 #define elf_backend_rela_normal 1
3487
3488 #include "elf32-target.h"