* elf64-sparc.c (struct sparc64_elf_link_hash_table): New 'sgot' and
[deliverable/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_omit_section_dynsym
43 PARAMS ((bfd *, struct bfd_link_info *, asection *));
44 static bfd_boolean elf32_sparc_size_dynamic_sections
45 PARAMS ((bfd *, struct bfd_link_info *));
46 static bfd_boolean elf32_sparc_new_section_hook
47 PARAMS ((bfd *, asection *));
48 static bfd_boolean elf32_sparc_relax_section
49 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
50 static bfd_vma dtpoff_base
51 PARAMS ((struct bfd_link_info *));
52 static bfd_vma tpoff
53 PARAMS ((struct bfd_link_info *, bfd_vma));
54 static bfd_boolean elf32_sparc_relocate_section
55 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
56 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
57 static bfd_boolean elf32_sparc_finish_dynamic_symbol
58 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
59 Elf_Internal_Sym *));
60 static bfd_boolean elf32_sparc_finish_dynamic_sections
61 PARAMS ((bfd *, struct bfd_link_info *));
62 static bfd_boolean elf32_sparc_merge_private_bfd_data
63 PARAMS ((bfd *, bfd *));
64 static struct bfd_hash_entry *link_hash_newfunc
65 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
66 static struct bfd_link_hash_table *elf32_sparc_link_hash_table_create
67 PARAMS ((bfd *));
68 static bfd_boolean create_got_section
69 PARAMS ((bfd *, struct bfd_link_info *));
70 static bfd_boolean elf32_sparc_create_dynamic_sections
71 PARAMS ((bfd *, struct bfd_link_info *));
72 static void elf32_sparc_copy_indirect_symbol
73 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
74 struct elf_link_hash_entry *));
75 static int elf32_sparc_tls_transition
76 PARAMS ((struct bfd_link_info *, bfd *, int, int));
77
78 static bfd_boolean elf32_sparc_mkobject
79 PARAMS ((bfd *));
80 static bfd_boolean elf32_sparc_object_p
81 PARAMS ((bfd *));
82 static void elf32_sparc_final_write_processing
83 PARAMS ((bfd *, bfd_boolean));
84 static enum elf_reloc_type_class elf32_sparc_reloc_type_class
85 PARAMS ((const Elf_Internal_Rela *));
86 static asection * elf32_sparc_gc_mark_hook
87 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
88 struct elf_link_hash_entry *, Elf_Internal_Sym *));
89 static bfd_boolean elf32_sparc_gc_sweep_hook
90 PARAMS ((bfd *, struct bfd_link_info *, asection *,
91 const Elf_Internal_Rela *));
92 \f
93 /* The relocation "howto" table. */
94
95 static bfd_reloc_status_type sparc_elf_notsupported_reloc
96 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
97 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
98 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
99 static bfd_reloc_status_type sparc_elf_hix22_reloc
100 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
101 static bfd_reloc_status_type sparc_elf_lox10_reloc
102 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
103
104 reloc_howto_type _bfd_sparc_elf_howto_table[] =
105 {
106 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
107 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
108 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
109 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
110 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
111 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
112 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
113 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
114 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
115 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
116 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
117 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
118 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
119 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
120 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
121 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
122 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
123 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
124 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
125 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
126 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),
127 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),
128 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
129 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
130 HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
131 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
132 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
133 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
134 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
135 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
136 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
137 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
138 /* These are for sparc64 in a 64 bit environment.
139 Values need to be here because the table is indexed by reloc number. */
140 HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE),
141 HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE),
142 HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE),
143 HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE),
144 HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE),
145 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),
146 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),
147 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),
148 /* End sparc64 in 64 bit environment values.
149 The following are for sparc64 in a 32 bit environment. */
150 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
151 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
152 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),
153 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
154 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
155 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,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_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
163 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
164 HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE),
165 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
166 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),
167 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),
168 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),
169 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),
170 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),
171 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),
172 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),
173 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),
174 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),
175 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),
176 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),
177 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),
178 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),
179 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),
180 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),
181 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),
182 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),
183 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),
184 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),
185 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),
186 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),
187 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),
188 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),
189 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)
190 };
191 static reloc_howto_type elf32_sparc_vtinherit_howto =
192 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
193 static reloc_howto_type elf32_sparc_vtentry_howto =
194 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);
195 static reloc_howto_type elf32_sparc_rev32_howto =
196 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
197
198 struct elf_reloc_map {
199 bfd_reloc_code_real_type bfd_reloc_val;
200 unsigned char elf_reloc_val;
201 };
202
203 static const struct elf_reloc_map sparc_reloc_map[] =
204 {
205 { BFD_RELOC_NONE, R_SPARC_NONE, },
206 { BFD_RELOC_16, R_SPARC_16, },
207 { BFD_RELOC_16_PCREL, R_SPARC_DISP16 },
208 { BFD_RELOC_8, R_SPARC_8 },
209 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
210 { BFD_RELOC_CTOR, R_SPARC_32 },
211 { BFD_RELOC_32, R_SPARC_32 },
212 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
213 { BFD_RELOC_HI22, R_SPARC_HI22 },
214 { BFD_RELOC_LO10, R_SPARC_LO10, },
215 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
216 { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 },
217 { BFD_RELOC_SPARC22, R_SPARC_22 },
218 { BFD_RELOC_SPARC13, R_SPARC_13 },
219 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
220 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
221 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
222 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
223 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
224 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
225 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
226 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
227 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
228 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
229 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
230 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
231 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
232 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
233 { BFD_RELOC_SPARC_10, R_SPARC_10 },
234 { BFD_RELOC_SPARC_11, R_SPARC_11 },
235 { BFD_RELOC_SPARC_64, R_SPARC_64 },
236 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
237 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
238 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
239 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
240 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
241 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
242 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
243 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
244 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
245 { BFD_RELOC_SPARC_7, R_SPARC_7 },
246 { BFD_RELOC_SPARC_5, R_SPARC_5 },
247 { BFD_RELOC_SPARC_6, R_SPARC_6 },
248 { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 },
249 { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 },
250 { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD },
251 { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL },
252 { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 },
253 { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 },
254 { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD },
255 { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL },
256 { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 },
257 { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 },
258 { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD },
259 { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 },
260 { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 },
261 { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD },
262 { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX },
263 { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD },
264 { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 },
265 { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 },
266 { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 },
267 { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 },
268 { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 },
269 { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 },
270 { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 },
271 { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 },
272 { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT },
273 { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY },
274 { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }
275 };
276
277 static reloc_howto_type *
278 elf32_sparc_reloc_type_lookup (abfd, code)
279 bfd *abfd ATTRIBUTE_UNUSED;
280 bfd_reloc_code_real_type code;
281 {
282 unsigned int i;
283
284 switch (code)
285 {
286 case BFD_RELOC_VTABLE_INHERIT:
287 return &elf32_sparc_vtinherit_howto;
288
289 case BFD_RELOC_VTABLE_ENTRY:
290 return &elf32_sparc_vtentry_howto;
291
292 case BFD_RELOC_SPARC_REV32:
293 return &elf32_sparc_rev32_howto;
294
295 default:
296 for (i = 0;
297 i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map);
298 i++)
299 {
300 if (sparc_reloc_map[i].bfd_reloc_val == code)
301 return (_bfd_sparc_elf_howto_table
302 + (int) sparc_reloc_map[i].elf_reloc_val);
303 }
304 }
305 bfd_set_error (bfd_error_bad_value);
306 return NULL;
307 }
308
309 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
310 and elf64-sparc.c has its own copy. */
311
312 static void
313 elf32_sparc_info_to_howto (abfd, cache_ptr, dst)
314 bfd *abfd ATTRIBUTE_UNUSED;
315 arelent *cache_ptr;
316 Elf_Internal_Rela *dst;
317 {
318 switch (ELF32_R_TYPE(dst->r_info))
319 {
320 case R_SPARC_GNU_VTINHERIT:
321 cache_ptr->howto = &elf32_sparc_vtinherit_howto;
322 break;
323
324 case R_SPARC_GNU_VTENTRY:
325 cache_ptr->howto = &elf32_sparc_vtentry_howto;
326 break;
327
328 case R_SPARC_REV32:
329 cache_ptr->howto = &elf32_sparc_rev32_howto;
330 break;
331
332 default:
333 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std);
334 cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
335 }
336 }
337 \f
338 /* For unsupported relocs. */
339
340 static bfd_reloc_status_type
341 sparc_elf_notsupported_reloc (abfd,
342 reloc_entry,
343 symbol,
344 data,
345 input_section,
346 output_bfd,
347 error_message)
348 bfd *abfd ATTRIBUTE_UNUSED;
349 arelent *reloc_entry ATTRIBUTE_UNUSED;
350 asymbol *symbol ATTRIBUTE_UNUSED;
351 PTR data ATTRIBUTE_UNUSED;
352 asection *input_section ATTRIBUTE_UNUSED;
353 bfd *output_bfd ATTRIBUTE_UNUSED;
354 char **error_message ATTRIBUTE_UNUSED;
355 {
356 return bfd_reloc_notsupported;
357 }
358
359 /* Handle the WDISP16 reloc. */
360
361 static bfd_reloc_status_type
362 sparc_elf_wdisp16_reloc (abfd,
363 reloc_entry,
364 symbol,
365 data,
366 input_section,
367 output_bfd,
368 error_message)
369 bfd *abfd;
370 arelent *reloc_entry;
371 asymbol *symbol;
372 PTR data;
373 asection *input_section;
374 bfd *output_bfd;
375 char **error_message ATTRIBUTE_UNUSED;
376 {
377 bfd_vma relocation;
378 bfd_vma x;
379
380 if (output_bfd != (bfd *) NULL
381 && (symbol->flags & BSF_SECTION_SYM) == 0
382 && (! reloc_entry->howto->partial_inplace
383 || reloc_entry->addend == 0))
384 {
385 reloc_entry->address += input_section->output_offset;
386 return bfd_reloc_ok;
387 }
388
389 if (output_bfd != NULL)
390 return bfd_reloc_continue;
391
392 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
393 return bfd_reloc_outofrange;
394
395 relocation = (symbol->value
396 + symbol->section->output_section->vma
397 + symbol->section->output_offset);
398 relocation += reloc_entry->addend;
399 relocation -= (input_section->output_section->vma
400 + input_section->output_offset);
401 relocation -= reloc_entry->address;
402
403 x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
404 x |= ((((relocation >> 2) & 0xc000) << 6)
405 | ((relocation >> 2) & 0x3fff));
406 bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
407
408 if ((bfd_signed_vma) relocation < - 0x40000
409 || (bfd_signed_vma) relocation > 0x3ffff)
410 return bfd_reloc_overflow;
411 else
412 return bfd_reloc_ok;
413 }
414
415 /* Handle the HIX22 reloc. */
416
417 static bfd_reloc_status_type
418 sparc_elf_hix22_reloc (abfd,
419 reloc_entry,
420 symbol,
421 data,
422 input_section,
423 output_bfd,
424 error_message)
425 bfd *abfd;
426 arelent *reloc_entry;
427 asymbol *symbol;
428 PTR data;
429 asection *input_section;
430 bfd *output_bfd;
431 char **error_message ATTRIBUTE_UNUSED;
432 {
433 bfd_vma relocation;
434 bfd_vma insn;
435
436 if (output_bfd != (bfd *) NULL
437 && (symbol->flags & BSF_SECTION_SYM) == 0)
438 {
439 reloc_entry->address += input_section->output_offset;
440 return bfd_reloc_ok;
441 }
442
443 if (output_bfd != NULL)
444 return bfd_reloc_continue;
445
446 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
447 return bfd_reloc_outofrange;
448
449 relocation = (symbol->value
450 + symbol->section->output_section->vma
451 + symbol->section->output_offset);
452 relocation += reloc_entry->addend;
453 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
454
455 insn = (insn &~ (bfd_vma) 0x3fffff) | (((~relocation) >> 10) & 0x3fffff);
456 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
457
458 return bfd_reloc_ok;
459 }
460
461 /* Handle the LOX10 reloc. */
462
463 static bfd_reloc_status_type
464 sparc_elf_lox10_reloc (abfd,
465 reloc_entry,
466 symbol,
467 data,
468 input_section,
469 output_bfd,
470 error_message)
471 bfd *abfd;
472 arelent *reloc_entry;
473 asymbol *symbol;
474 PTR data;
475 asection *input_section;
476 bfd *output_bfd;
477 char **error_message ATTRIBUTE_UNUSED;
478 {
479 bfd_vma relocation;
480 bfd_vma insn;
481
482 if (output_bfd != (bfd *) NULL
483 && (symbol->flags & BSF_SECTION_SYM) == 0)
484 {
485 reloc_entry->address += input_section->output_offset;
486 return bfd_reloc_ok;
487 }
488
489 if (output_bfd != NULL)
490 return bfd_reloc_continue;
491
492 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
493 return bfd_reloc_outofrange;
494
495 relocation = (symbol->value
496 + symbol->section->output_section->vma
497 + symbol->section->output_offset);
498 relocation += reloc_entry->addend;
499 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
500
501 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
502 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
503
504 return bfd_reloc_ok;
505 }
506 \f
507 /* Support for core dump NOTE sections. */
508
509 static bfd_boolean
510 elf32_sparc_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
511 {
512 switch (note->descsz)
513 {
514 default:
515 return FALSE;
516
517 case 260: /* Solaris prpsinfo_t. */
518 elf_tdata (abfd)->core_program
519 = _bfd_elfcore_strndup (abfd, note->descdata + 84, 16);
520 elf_tdata (abfd)->core_command
521 = _bfd_elfcore_strndup (abfd, note->descdata + 100, 80);
522 break;
523
524 case 336: /* Solaris psinfo_t. */
525 elf_tdata (abfd)->core_program
526 = _bfd_elfcore_strndup (abfd, note->descdata + 88, 16);
527 elf_tdata (abfd)->core_command
528 = _bfd_elfcore_strndup (abfd, note->descdata + 104, 80);
529 break;
530 }
531
532 return TRUE;
533 }
534
535 \f
536 /* Functions for the SPARC ELF linker. */
537
538 /* The name of the dynamic interpreter. This is put in the .interp
539 section. */
540
541 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
542
543 /* The nop opcode we use. */
544
545 #define SPARC_NOP 0x01000000
546
547 /* The size in bytes of an entry in the procedure linkage table. */
548
549 #define PLT_ENTRY_SIZE 12
550
551 /* The first four entries in a procedure linkage table are reserved,
552 and the initial contents are unimportant (we zero them out).
553 Subsequent entries look like this. See the SVR4 ABI SPARC
554 supplement to see how this works. */
555
556 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
557 #define PLT_ENTRY_WORD0 0x03000000
558 /* b,a .plt0. We fill in the offset later. */
559 #define PLT_ENTRY_WORD1 0x30800000
560 /* nop. */
561 #define PLT_ENTRY_WORD2 SPARC_NOP
562
563 /* The SPARC linker needs to keep track of the number of relocs that it
564 decides to copy as dynamic relocs in check_relocs for each symbol.
565 This is so that it can later discard them if they are found to be
566 unnecessary. We store the information in a field extending the
567 regular ELF linker hash table. */
568
569 struct elf32_sparc_dyn_relocs
570 {
571 struct elf32_sparc_dyn_relocs *next;
572
573 /* The input section of the reloc. */
574 asection *sec;
575
576 /* Total number of relocs copied for the input section. */
577 bfd_size_type count;
578
579 /* Number of pc-relative relocs copied for the input section. */
580 bfd_size_type pc_count;
581 };
582
583 /* SPARC ELF linker hash entry. */
584
585 struct elf32_sparc_link_hash_entry
586 {
587 struct elf_link_hash_entry elf;
588
589 /* Track dynamic relocs copied for this symbol. */
590 struct elf32_sparc_dyn_relocs *dyn_relocs;
591
592 #define GOT_UNKNOWN 0
593 #define GOT_NORMAL 1
594 #define GOT_TLS_GD 2
595 #define GOT_TLS_IE 3
596 unsigned char tls_type;
597 };
598
599 #define elf32_sparc_hash_entry(ent) ((struct elf32_sparc_link_hash_entry *)(ent))
600
601 struct elf32_sparc_obj_tdata
602 {
603 struct elf_obj_tdata root;
604
605 /* tls_type for each local got entry. */
606 char *local_got_tls_type;
607
608 /* TRUE if TLS GD relocs has been seen for this object. */
609 bfd_boolean has_tlsgd;
610 };
611
612 #define elf32_sparc_tdata(abfd) \
613 ((struct elf32_sparc_obj_tdata *) (abfd)->tdata.any)
614
615 #define elf32_sparc_local_got_tls_type(abfd) \
616 (elf32_sparc_tdata (abfd)->local_got_tls_type)
617
618 static bfd_boolean
619 elf32_sparc_mkobject (abfd)
620 bfd *abfd;
621 {
622 bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
623 abfd->tdata.any = bfd_zalloc (abfd, amt);
624 if (abfd->tdata.any == NULL)
625 return FALSE;
626 return TRUE;
627 }
628
629 /* SPARC ELF linker hash table. */
630
631 struct elf32_sparc_link_hash_table
632 {
633 struct elf_link_hash_table elf;
634
635 /* Short-cuts to get to dynamic linker sections. */
636 asection *sgot;
637 asection *srelgot;
638 asection *splt;
639 asection *srelplt;
640 asection *sdynbss;
641 asection *srelbss;
642
643 union {
644 bfd_signed_vma refcount;
645 bfd_vma offset;
646 } tls_ldm_got;
647
648 /* Small local sym to section mapping cache. */
649 struct sym_sec_cache sym_sec;
650 };
651
652 /* Get the SPARC ELF linker hash table from a link_info structure. */
653
654 #define elf32_sparc_hash_table(p) \
655 ((struct elf32_sparc_link_hash_table *) ((p)->hash))
656
657 /* Create an entry in an i386 ELF linker hash table. */
658
659 static struct bfd_hash_entry *
660 link_hash_newfunc (entry, table, string)
661 struct bfd_hash_entry *entry;
662 struct bfd_hash_table *table;
663 const char *string;
664 {
665 /* Allocate the structure if it has not already been allocated by a
666 subclass. */
667 if (entry == NULL)
668 {
669 entry = bfd_hash_allocate (table,
670 sizeof (struct elf32_sparc_link_hash_entry));
671 if (entry == NULL)
672 return entry;
673 }
674
675 /* Call the allocation method of the superclass. */
676 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
677 if (entry != NULL)
678 {
679 struct elf32_sparc_link_hash_entry *eh;
680
681 eh = (struct elf32_sparc_link_hash_entry *) entry;
682 eh->dyn_relocs = NULL;
683 eh->tls_type = GOT_UNKNOWN;
684 }
685
686 return entry;
687 }
688
689 /* Create a SPARC ELF linker hash table. */
690
691 static struct bfd_link_hash_table *
692 elf32_sparc_link_hash_table_create (abfd)
693 bfd *abfd;
694 {
695 struct elf32_sparc_link_hash_table *ret;
696 bfd_size_type amt = sizeof (struct elf32_sparc_link_hash_table);
697
698 ret = (struct elf32_sparc_link_hash_table *) bfd_malloc (amt);
699 if (ret == NULL)
700 return NULL;
701
702 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
703 {
704 free (ret);
705 return NULL;
706 }
707
708 ret->sgot = NULL;
709 ret->srelgot = NULL;
710 ret->splt = NULL;
711 ret->srelplt = NULL;
712 ret->sdynbss = NULL;
713 ret->srelbss = NULL;
714 ret->tls_ldm_got.refcount = 0;
715 ret->sym_sec.abfd = NULL;
716
717 return &ret->elf.root;
718 }
719
720 /* Create .got and .rela.got sections in DYNOBJ, and set up
721 shortcuts to them in our hash table. */
722
723 static bfd_boolean
724 create_got_section (dynobj, info)
725 bfd *dynobj;
726 struct bfd_link_info *info;
727 {
728 struct elf32_sparc_link_hash_table *htab;
729
730 if (! _bfd_elf_create_got_section (dynobj, info))
731 return FALSE;
732
733 htab = elf32_sparc_hash_table (info);
734 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
735 if (!htab->sgot)
736 abort ();
737
738 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
739 if (htab->srelgot == NULL
740 || ! bfd_set_section_flags (dynobj, htab->srelgot,
741 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
742 | SEC_IN_MEMORY | SEC_LINKER_CREATED
743 | SEC_READONLY))
744 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
745 return FALSE;
746 return TRUE;
747 }
748
749 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
750 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
751 hash table. */
752
753 static bfd_boolean
754 elf32_sparc_create_dynamic_sections (dynobj, info)
755 bfd *dynobj;
756 struct bfd_link_info *info;
757 {
758 struct elf32_sparc_link_hash_table *htab;
759
760 htab = elf32_sparc_hash_table (info);
761 if (!htab->sgot && !create_got_section (dynobj, info))
762 return FALSE;
763
764 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
765 return FALSE;
766
767 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
768 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
769 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
770 if (!info->shared)
771 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
772
773 if (!htab->splt || !htab->srelplt || !htab->sdynbss
774 || (!info->shared && !htab->srelbss))
775 abort ();
776
777 return TRUE;
778 }
779
780 /* Copy the extra info we tack onto an elf_link_hash_entry. */
781
782 static void
783 elf32_sparc_copy_indirect_symbol (bed, dir, ind)
784 const struct elf_backend_data *bed;
785 struct elf_link_hash_entry *dir, *ind;
786 {
787 struct elf32_sparc_link_hash_entry *edir, *eind;
788
789 edir = (struct elf32_sparc_link_hash_entry *) dir;
790 eind = (struct elf32_sparc_link_hash_entry *) ind;
791
792 if (eind->dyn_relocs != NULL)
793 {
794 if (edir->dyn_relocs != NULL)
795 {
796 struct elf32_sparc_dyn_relocs **pp;
797 struct elf32_sparc_dyn_relocs *p;
798
799 if (ind->root.type == bfd_link_hash_indirect)
800 abort ();
801
802 /* Add reloc counts against the weak sym to the strong sym
803 list. Merge any entries against the same section. */
804 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
805 {
806 struct elf32_sparc_dyn_relocs *q;
807
808 for (q = edir->dyn_relocs; q != NULL; q = q->next)
809 if (q->sec == p->sec)
810 {
811 q->pc_count += p->pc_count;
812 q->count += p->count;
813 *pp = p->next;
814 break;
815 }
816 if (q == NULL)
817 pp = &p->next;
818 }
819 *pp = edir->dyn_relocs;
820 }
821
822 edir->dyn_relocs = eind->dyn_relocs;
823 eind->dyn_relocs = NULL;
824 }
825
826 if (ind->root.type == bfd_link_hash_indirect
827 && dir->got.refcount <= 0)
828 {
829 edir->tls_type = eind->tls_type;
830 eind->tls_type = GOT_UNKNOWN;
831 }
832 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
833 }
834
835 static int
836 elf32_sparc_tls_transition (info, abfd, r_type, is_local)
837 struct bfd_link_info *info;
838 bfd *abfd;
839 int r_type;
840 int is_local;
841 {
842 if (r_type == R_SPARC_TLS_GD_HI22
843 && ! elf32_sparc_tdata (abfd)->has_tlsgd)
844 r_type = R_SPARC_REV32;
845
846 if (info->shared)
847 return r_type;
848
849 switch (r_type)
850 {
851 case R_SPARC_TLS_GD_HI22:
852 if (is_local)
853 return R_SPARC_TLS_LE_HIX22;
854 return R_SPARC_TLS_IE_HI22;
855 case R_SPARC_TLS_GD_LO10:
856 if (is_local)
857 return R_SPARC_TLS_LE_LOX10;
858 return R_SPARC_TLS_IE_LO10;
859 case R_SPARC_TLS_IE_HI22:
860 if (is_local)
861 return R_SPARC_TLS_LE_HIX22;
862 return r_type;
863 case R_SPARC_TLS_IE_LO10:
864 if (is_local)
865 return R_SPARC_TLS_LE_LOX10;
866 return r_type;
867 case R_SPARC_TLS_LDM_HI22:
868 return R_SPARC_TLS_LE_HIX22;
869 case R_SPARC_TLS_LDM_LO10:
870 return R_SPARC_TLS_LE_LOX10;
871 }
872
873 return r_type;
874 }
875
876 /* Look through the relocs for a section during the first phase, and
877 allocate space in the global offset table or procedure linkage
878 table. */
879
880 static bfd_boolean
881 elf32_sparc_check_relocs (abfd, info, sec, relocs)
882 bfd *abfd;
883 struct bfd_link_info *info;
884 asection *sec;
885 const Elf_Internal_Rela *relocs;
886 {
887 struct elf32_sparc_link_hash_table *htab;
888 Elf_Internal_Shdr *symtab_hdr;
889 struct elf_link_hash_entry **sym_hashes;
890 bfd_vma *local_got_offsets;
891 const Elf_Internal_Rela *rel;
892 const Elf_Internal_Rela *rel_end;
893 asection *sreloc;
894 bfd_boolean checked_tlsgd = FALSE;
895
896 if (info->relocatable)
897 return TRUE;
898
899 htab = elf32_sparc_hash_table (info);
900 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
901 sym_hashes = elf_sym_hashes (abfd);
902 local_got_offsets = elf_local_got_offsets (abfd);
903
904 sreloc = NULL;
905
906 rel_end = relocs + sec->reloc_count;
907 for (rel = relocs; rel < rel_end; rel++)
908 {
909 unsigned int r_type;
910 unsigned long r_symndx;
911 struct elf_link_hash_entry *h;
912
913 r_symndx = ELF32_R_SYM (rel->r_info);
914 r_type = ELF32_R_TYPE (rel->r_info);
915
916 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
917 {
918 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
919 abfd, r_symndx);
920 return FALSE;
921 }
922
923 if (r_symndx < symtab_hdr->sh_info)
924 h = NULL;
925 else
926 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
927
928 /* Compatibility with old R_SPARC_REV32 reloc conflicting
929 with R_SPARC_TLS_GD_HI22. */
930 if (! checked_tlsgd)
931 switch (r_type)
932 {
933 case R_SPARC_TLS_GD_HI22:
934 {
935 const Elf_Internal_Rela *relt;
936
937 for (relt = rel + 1; relt < rel_end; relt++)
938 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
939 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
940 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
941 break;
942 checked_tlsgd = TRUE;
943 elf32_sparc_tdata (abfd)->has_tlsgd = relt < rel_end;
944 }
945 break;
946 case R_SPARC_TLS_GD_LO10:
947 case R_SPARC_TLS_GD_ADD:
948 case R_SPARC_TLS_GD_CALL:
949 checked_tlsgd = TRUE;
950 elf32_sparc_tdata (abfd)->has_tlsgd = TRUE;
951 break;
952 }
953
954 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h == NULL);
955 switch (r_type)
956 {
957 case R_SPARC_TLS_LDM_HI22:
958 case R_SPARC_TLS_LDM_LO10:
959 htab->tls_ldm_got.refcount += 1;
960 break;
961
962 case R_SPARC_TLS_LE_HIX22:
963 case R_SPARC_TLS_LE_LOX10:
964 if (info->shared)
965 goto r_sparc_plt32;
966 break;
967
968 case R_SPARC_TLS_IE_HI22:
969 case R_SPARC_TLS_IE_LO10:
970 if (info->shared)
971 info->flags |= DF_STATIC_TLS;
972 /* Fall through */
973
974 case R_SPARC_GOT10:
975 case R_SPARC_GOT13:
976 case R_SPARC_GOT22:
977 case R_SPARC_TLS_GD_HI22:
978 case R_SPARC_TLS_GD_LO10:
979 /* This symbol requires a global offset table entry. */
980 {
981 int tls_type, old_tls_type;
982
983 switch (r_type)
984 {
985 default:
986 case R_SPARC_GOT10:
987 case R_SPARC_GOT13:
988 case R_SPARC_GOT22:
989 tls_type = GOT_NORMAL;
990 break;
991 case R_SPARC_TLS_GD_HI22:
992 case R_SPARC_TLS_GD_LO10:
993 tls_type = GOT_TLS_GD;
994 break;
995 case R_SPARC_TLS_IE_HI22:
996 case R_SPARC_TLS_IE_LO10:
997 tls_type = GOT_TLS_IE;
998 break;
999 }
1000
1001 if (h != NULL)
1002 {
1003 h->got.refcount += 1;
1004 old_tls_type = elf32_sparc_hash_entry(h)->tls_type;
1005 }
1006 else
1007 {
1008 bfd_signed_vma *local_got_refcounts;
1009
1010 /* This is a global offset table entry for a local symbol. */
1011 local_got_refcounts = elf_local_got_refcounts (abfd);
1012 if (local_got_refcounts == NULL)
1013 {
1014 bfd_size_type size;
1015
1016 size = symtab_hdr->sh_info;
1017 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1018 local_got_refcounts = ((bfd_signed_vma *)
1019 bfd_zalloc (abfd, size));
1020 if (local_got_refcounts == NULL)
1021 return FALSE;
1022 elf_local_got_refcounts (abfd) = local_got_refcounts;
1023 elf32_sparc_local_got_tls_type (abfd)
1024 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1025 }
1026 local_got_refcounts[r_symndx] += 1;
1027 old_tls_type = elf32_sparc_local_got_tls_type (abfd) [r_symndx];
1028 }
1029
1030 /* If a TLS symbol is accessed using IE at least once,
1031 there is no point to use dynamic model for it. */
1032 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1033 && (old_tls_type != GOT_TLS_GD
1034 || tls_type != GOT_TLS_IE))
1035 {
1036 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1037 tls_type = old_tls_type;
1038 else
1039 {
1040 (*_bfd_error_handler)
1041 (_("%B: `%s' accessed both as normal and thread local symbol"),
1042 abfd, 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->needs_plt = 1;
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->non_got_ref = 1;
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->non_got_ref = 1;
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->def_regular))))
1175 || (!info->shared
1176 && (sec->flags & SEC_ALLOC) != 0
1177 && h != NULL
1178 && (h->root.type == bfd_link_hash_defweak
1179 || !h->def_regular)))
1180 {
1181 struct elf32_sparc_dyn_relocs *p;
1182 struct elf32_sparc_dyn_relocs **head;
1183
1184 /* When creating a shared object, we must copy these
1185 relocs into the output file. We create a reloc
1186 section in dynobj and make room for the reloc. */
1187 if (sreloc == NULL)
1188 {
1189 const char *name;
1190 bfd *dynobj;
1191
1192 name = (bfd_elf_string_from_elf_section
1193 (abfd,
1194 elf_elfheader (abfd)->e_shstrndx,
1195 elf_section_data (sec)->rel_hdr.sh_name));
1196 if (name == NULL)
1197 return FALSE;
1198
1199 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1200 && strcmp (bfd_get_section_name (abfd, sec),
1201 name + 5) == 0);
1202
1203 if (htab->elf.dynobj == NULL)
1204 htab->elf.dynobj = abfd;
1205 dynobj = htab->elf.dynobj;
1206
1207 sreloc = bfd_get_section_by_name (dynobj, name);
1208 if (sreloc == NULL)
1209 {
1210 flagword flags;
1211
1212 sreloc = bfd_make_section (dynobj, name);
1213 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1214 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1215 if ((sec->flags & SEC_ALLOC) != 0)
1216 flags |= SEC_ALLOC | SEC_LOAD;
1217 if (sreloc == NULL
1218 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1219 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1220 return FALSE;
1221 }
1222 elf_section_data (sec)->sreloc = sreloc;
1223 }
1224
1225 /* If this is a global symbol, we count the number of
1226 relocations we need for this symbol. */
1227 if (h != NULL)
1228 head = &((struct elf32_sparc_link_hash_entry *) h)->dyn_relocs;
1229 else
1230 {
1231 /* Track dynamic relocs needed for local syms too.
1232 We really need local syms available to do this
1233 easily. Oh well. */
1234
1235 asection *s;
1236 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1237 sec, r_symndx);
1238 if (s == NULL)
1239 return FALSE;
1240
1241 head = ((struct elf32_sparc_dyn_relocs **)
1242 &elf_section_data (s)->local_dynrel);
1243 }
1244
1245 p = *head;
1246 if (p == NULL || p->sec != sec)
1247 {
1248 bfd_size_type amt = sizeof *p;
1249 p = ((struct elf32_sparc_dyn_relocs *)
1250 bfd_alloc (htab->elf.dynobj, amt));
1251 if (p == NULL)
1252 return FALSE;
1253 p->next = *head;
1254 *head = p;
1255 p->sec = sec;
1256 p->count = 0;
1257 p->pc_count = 0;
1258 }
1259
1260 p->count += 1;
1261 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1262 p->pc_count += 1;
1263 }
1264
1265 break;
1266
1267 case R_SPARC_GNU_VTINHERIT:
1268 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1269 return FALSE;
1270 break;
1271
1272 case R_SPARC_GNU_VTENTRY:
1273 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1274 return FALSE;
1275 break;
1276
1277 default:
1278 break;
1279 }
1280 }
1281
1282 return TRUE;
1283 }
1284
1285 static asection *
1286 elf32_sparc_gc_mark_hook (sec, info, rel, h, sym)
1287 asection *sec;
1288 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1289 Elf_Internal_Rela *rel;
1290 struct elf_link_hash_entry *h;
1291 Elf_Internal_Sym *sym;
1292 {
1293 if (h != NULL)
1294 {
1295 switch (ELF32_R_TYPE (rel->r_info))
1296 {
1297 case R_SPARC_GNU_VTINHERIT:
1298 case R_SPARC_GNU_VTENTRY:
1299 break;
1300
1301 default:
1302 switch (h->root.type)
1303 {
1304 case bfd_link_hash_defined:
1305 case bfd_link_hash_defweak:
1306 return h->root.u.def.section;
1307
1308 case bfd_link_hash_common:
1309 return h->root.u.c.p->section;
1310
1311 default:
1312 break;
1313 }
1314 }
1315 }
1316 else
1317 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1318
1319 return NULL;
1320 }
1321
1322 /* Update the got entry reference counts for the section being removed. */
1323 static bfd_boolean
1324 elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs)
1325 bfd *abfd;
1326 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1327 asection *sec;
1328 const Elf_Internal_Rela *relocs;
1329 {
1330 Elf_Internal_Shdr *symtab_hdr;
1331 struct elf_link_hash_entry **sym_hashes;
1332 bfd_signed_vma *local_got_refcounts;
1333 const Elf_Internal_Rela *rel, *relend;
1334
1335 elf_section_data (sec)->local_dynrel = NULL;
1336
1337 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1338 sym_hashes = elf_sym_hashes (abfd);
1339 local_got_refcounts = elf_local_got_refcounts (abfd);
1340
1341 relend = relocs + sec->reloc_count;
1342 for (rel = relocs; rel < relend; rel++)
1343 {
1344 unsigned long r_symndx;
1345 unsigned int r_type;
1346 struct elf_link_hash_entry *h = NULL;
1347
1348 r_symndx = ELF32_R_SYM (rel->r_info);
1349 if (r_symndx >= symtab_hdr->sh_info)
1350 {
1351 struct elf32_sparc_link_hash_entry *eh;
1352 struct elf32_sparc_dyn_relocs **pp;
1353 struct elf32_sparc_dyn_relocs *p;
1354
1355 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1356 eh = (struct elf32_sparc_link_hash_entry *) h;
1357 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1358 if (p->sec == sec)
1359 {
1360 /* Everything must go for SEC. */
1361 *pp = p->next;
1362 break;
1363 }
1364 }
1365
1366 r_type = ELF32_R_TYPE (rel->r_info);
1367 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h != NULL);
1368 switch (r_type)
1369 {
1370 case R_SPARC_TLS_LDM_HI22:
1371 case R_SPARC_TLS_LDM_LO10:
1372 if (elf32_sparc_hash_table (info)->tls_ldm_got.refcount > 0)
1373 elf32_sparc_hash_table (info)->tls_ldm_got.refcount -= 1;
1374 break;
1375
1376 case R_SPARC_TLS_GD_HI22:
1377 case R_SPARC_TLS_GD_LO10:
1378 case R_SPARC_TLS_IE_HI22:
1379 case R_SPARC_TLS_IE_LO10:
1380 case R_SPARC_GOT10:
1381 case R_SPARC_GOT13:
1382 case R_SPARC_GOT22:
1383 if (h != NULL)
1384 {
1385 if (h->got.refcount > 0)
1386 h->got.refcount--;
1387 }
1388 else
1389 {
1390 if (local_got_refcounts[r_symndx] > 0)
1391 local_got_refcounts[r_symndx]--;
1392 }
1393 break;
1394
1395 case R_SPARC_PC10:
1396 case R_SPARC_PC22:
1397 if (h != NULL
1398 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1399 break;
1400 /* Fall through. */
1401
1402 case R_SPARC_DISP8:
1403 case R_SPARC_DISP16:
1404 case R_SPARC_DISP32:
1405 case R_SPARC_WDISP30:
1406 case R_SPARC_WDISP22:
1407 case R_SPARC_WDISP19:
1408 case R_SPARC_WDISP16:
1409 case R_SPARC_8:
1410 case R_SPARC_16:
1411 case R_SPARC_32:
1412 case R_SPARC_HI22:
1413 case R_SPARC_22:
1414 case R_SPARC_13:
1415 case R_SPARC_LO10:
1416 case R_SPARC_UA16:
1417 case R_SPARC_UA32:
1418 case R_SPARC_PLT32:
1419 if (info->shared)
1420 break;
1421 /* Fall through. */
1422
1423 case R_SPARC_WPLT30:
1424 if (h != NULL)
1425 {
1426 if (h->plt.refcount > 0)
1427 h->plt.refcount--;
1428 }
1429 break;
1430
1431 default:
1432 break;
1433 }
1434 }
1435
1436 return TRUE;
1437 }
1438
1439 /* Adjust a symbol defined by a dynamic object and referenced by a
1440 regular object. The current definition is in some section of the
1441 dynamic object, but we're not including those sections. We have to
1442 change the definition to something the rest of the link can
1443 understand. */
1444
1445 static bfd_boolean
1446 elf32_sparc_adjust_dynamic_symbol (info, h)
1447 struct bfd_link_info *info;
1448 struct elf_link_hash_entry *h;
1449 {
1450 struct elf32_sparc_link_hash_table *htab;
1451 struct elf32_sparc_link_hash_entry * eh;
1452 struct elf32_sparc_dyn_relocs *p;
1453 asection *s;
1454 unsigned int power_of_two;
1455
1456 htab = elf32_sparc_hash_table (info);
1457
1458 /* Make sure we know what is going on here. */
1459 BFD_ASSERT (htab->elf.dynobj != NULL
1460 && (h->needs_plt
1461 || h->u.weakdef != NULL
1462 || (h->def_dynamic
1463 && h->ref_regular
1464 && !h->def_regular)));
1465
1466 /* If this is a function, put it in the procedure linkage table. We
1467 will fill in the contents of the procedure linkage table later
1468 (although we could actually do it here). The STT_NOTYPE
1469 condition is a hack specifically for the Oracle libraries
1470 delivered for Solaris; for some inexplicable reason, they define
1471 some of their functions as STT_NOTYPE when they really should be
1472 STT_FUNC. */
1473 if (h->type == STT_FUNC
1474 || h->needs_plt
1475 || (h->type == STT_NOTYPE
1476 && (h->root.type == bfd_link_hash_defined
1477 || h->root.type == bfd_link_hash_defweak)
1478 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1479 {
1480 if (h->plt.refcount <= 0
1481 || (! info->shared
1482 && !h->def_dynamic
1483 && !h->ref_dynamic
1484 && h->root.type != bfd_link_hash_undefweak
1485 && h->root.type != bfd_link_hash_undefined))
1486 {
1487 /* This case can occur if we saw a WPLT30 reloc in an input
1488 file, but the symbol was never referred to by a dynamic
1489 object, or if all references were garbage collected. In
1490 such a case, we don't actually need to build a procedure
1491 linkage table, and we can just do a WDISP30 reloc instead. */
1492 h->plt.offset = (bfd_vma) -1;
1493 h->needs_plt = 0;
1494 }
1495
1496 return TRUE;
1497 }
1498 else
1499 h->plt.offset = (bfd_vma) -1;
1500
1501 /* If this is a weak symbol, and there is a real definition, the
1502 processor independent code will have arranged for us to see the
1503 real definition first, and we can just use the same value. */
1504 if (h->u.weakdef != NULL)
1505 {
1506 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1507 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1508 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1509 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1510 return TRUE;
1511 }
1512
1513 /* This is a reference to a symbol defined by a dynamic object which
1514 is not a function. */
1515
1516 /* If we are creating a shared library, we must presume that the
1517 only references to the symbol are via the global offset table.
1518 For such cases we need not do anything here; the relocations will
1519 be handled correctly by relocate_section. */
1520 if (info->shared)
1521 return TRUE;
1522
1523 /* If there are no references to this symbol that do not use the
1524 GOT, we don't need to generate a copy reloc. */
1525 if (!h->non_got_ref)
1526 return TRUE;
1527
1528 eh = (struct elf32_sparc_link_hash_entry *) h;
1529 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1530 {
1531 s = p->sec->output_section;
1532 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1533 break;
1534 }
1535
1536 /* If we didn't find any dynamic relocs in read-only sections, then
1537 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1538 if (p == NULL)
1539 {
1540 h->non_got_ref = 0;
1541 return TRUE;
1542 }
1543
1544 /* We must allocate the symbol in our .dynbss section, which will
1545 become part of the .bss section of the executable. There will be
1546 an entry for this symbol in the .dynsym section. The dynamic
1547 object will contain position independent code, so all references
1548 from the dynamic object to this symbol will go through the global
1549 offset table. The dynamic linker will use the .dynsym entry to
1550 determine the address it must put in the global offset table, so
1551 both the dynamic object and the regular object will refer to the
1552 same memory location for the variable. */
1553
1554 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1555 to copy the initial value out of the dynamic object and into the
1556 runtime process image. We need to remember the offset into the
1557 .rel.bss section we are going to use. */
1558 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1559 {
1560 htab->srelbss->size += sizeof (Elf32_External_Rela);
1561 h->needs_copy = 1;
1562 }
1563
1564 /* We need to figure out the alignment required for this symbol. I
1565 have no idea how ELF linkers handle this. */
1566 power_of_two = bfd_log2 (h->size);
1567 if (power_of_two > 3)
1568 power_of_two = 3;
1569
1570 /* Apply the required alignment. */
1571 s = htab->sdynbss;
1572 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1573 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1574 {
1575 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1576 return FALSE;
1577 }
1578
1579 /* Define the symbol as being at this point in the section. */
1580 h->root.u.def.section = s;
1581 h->root.u.def.value = s->size;
1582
1583 /* Increment the section size to make room for the symbol. */
1584 s->size += h->size;
1585
1586 return TRUE;
1587 }
1588
1589 /* Allocate space in .plt, .got and associated reloc sections for
1590 dynamic relocs. */
1591
1592 static bfd_boolean
1593 allocate_dynrelocs (h, inf)
1594 struct elf_link_hash_entry *h;
1595 PTR inf;
1596 {
1597 struct bfd_link_info *info;
1598 struct elf32_sparc_link_hash_table *htab;
1599 struct elf32_sparc_link_hash_entry *eh;
1600 struct elf32_sparc_dyn_relocs *p;
1601
1602 if (h->root.type == bfd_link_hash_indirect)
1603 return TRUE;
1604
1605 if (h->root.type == bfd_link_hash_warning)
1606 /* When warning symbols are created, they **replace** the "real"
1607 entry in the hash table, thus we never get to see the real
1608 symbol in a hash traversal. So look at it now. */
1609 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1610
1611 info = (struct bfd_link_info *) inf;
1612 htab = elf32_sparc_hash_table (info);
1613
1614 if (htab->elf.dynamic_sections_created
1615 && h->plt.refcount > 0)
1616 {
1617 /* Make sure this symbol is output as a dynamic symbol.
1618 Undefined weak syms won't yet be marked as dynamic. */
1619 if (h->dynindx == -1
1620 && !h->forced_local)
1621 {
1622 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1623 return FALSE;
1624 }
1625
1626 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1627 {
1628 asection *s = htab->splt;
1629
1630 /* The first four entries in .plt are reserved. */
1631 if (s->size == 0)
1632 s->size = 4 * PLT_ENTRY_SIZE;
1633
1634 /* The procedure linkage table has a maximum size. */
1635 if (s->size >= 0x400000)
1636 {
1637 bfd_set_error (bfd_error_bad_value);
1638 return FALSE;
1639 }
1640
1641 h->plt.offset = s->size;
1642
1643 /* If this symbol is not defined in a regular file, and we are
1644 not generating a shared library, then set the symbol to this
1645 location in the .plt. This is required to make function
1646 pointers compare as equal between the normal executable and
1647 the shared library. */
1648 if (! info->shared
1649 && !h->def_regular)
1650 {
1651 h->root.u.def.section = s;
1652 h->root.u.def.value = h->plt.offset;
1653 }
1654
1655 /* Make room for this entry. */
1656 s->size += PLT_ENTRY_SIZE;
1657
1658 /* We also need to make an entry in the .rela.plt section. */
1659 htab->srelplt->size += sizeof (Elf32_External_Rela);
1660 }
1661 else
1662 {
1663 h->plt.offset = (bfd_vma) -1;
1664 h->needs_plt = 0;
1665 }
1666 }
1667 else
1668 {
1669 h->plt.offset = (bfd_vma) -1;
1670 h->needs_plt = 0;
1671 }
1672
1673 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
1674 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
1675 if (h->got.refcount > 0
1676 && !info->shared
1677 && h->dynindx == -1
1678 && elf32_sparc_hash_entry(h)->tls_type == GOT_TLS_IE)
1679 h->got.offset = (bfd_vma) -1;
1680 else if (h->got.refcount > 0)
1681 {
1682 asection *s;
1683 bfd_boolean dyn;
1684 int tls_type = elf32_sparc_hash_entry(h)->tls_type;
1685
1686 /* Make sure this symbol is output as a dynamic symbol.
1687 Undefined weak syms won't yet be marked as dynamic. */
1688 if (h->dynindx == -1
1689 && !h->forced_local)
1690 {
1691 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1692 return FALSE;
1693 }
1694
1695 s = htab->sgot;
1696 h->got.offset = s->size;
1697 s->size += 4;
1698 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
1699 if (tls_type == GOT_TLS_GD)
1700 s->size += 4;
1701 dyn = htab->elf.dynamic_sections_created;
1702 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
1703 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
1704 global. */
1705 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1706 || tls_type == GOT_TLS_IE)
1707 htab->srelgot->size += sizeof (Elf32_External_Rela);
1708 else if (tls_type == GOT_TLS_GD)
1709 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
1710 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
1711 htab->srelgot->size += sizeof (Elf32_External_Rela);
1712 }
1713 else
1714 h->got.offset = (bfd_vma) -1;
1715
1716 eh = (struct elf32_sparc_link_hash_entry *) h;
1717 if (eh->dyn_relocs == NULL)
1718 return TRUE;
1719
1720 /* In the shared -Bsymbolic case, discard space allocated for
1721 dynamic pc-relative relocs against symbols which turn out to be
1722 defined in regular objects. For the normal shared case, discard
1723 space for pc-relative relocs that have become local due to symbol
1724 visibility changes. */
1725
1726 if (info->shared)
1727 {
1728 if (h->def_regular
1729 && (h->forced_local
1730 || info->symbolic))
1731 {
1732 struct elf32_sparc_dyn_relocs **pp;
1733
1734 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1735 {
1736 p->count -= p->pc_count;
1737 p->pc_count = 0;
1738 if (p->count == 0)
1739 *pp = p->next;
1740 else
1741 pp = &p->next;
1742 }
1743 }
1744 }
1745 else
1746 {
1747 /* For the non-shared case, discard space for relocs against
1748 symbols which turn out to need copy relocs or are not
1749 dynamic. */
1750
1751 if (!h->non_got_ref
1752 && ((h->def_dynamic
1753 && !h->def_regular)
1754 || (htab->elf.dynamic_sections_created
1755 && (h->root.type == bfd_link_hash_undefweak
1756 || h->root.type == bfd_link_hash_undefined))))
1757 {
1758 /* Make sure this symbol is output as a dynamic symbol.
1759 Undefined weak syms won't yet be marked as dynamic. */
1760 if (h->dynindx == -1
1761 && !h->forced_local)
1762 {
1763 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1764 return FALSE;
1765 }
1766
1767 /* If that succeeded, we know we'll be keeping all the
1768 relocs. */
1769 if (h->dynindx != -1)
1770 goto keep;
1771 }
1772
1773 eh->dyn_relocs = NULL;
1774
1775 keep: ;
1776 }
1777
1778 /* Finally, allocate space. */
1779 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1780 {
1781 asection *sreloc = elf_section_data (p->sec)->sreloc;
1782 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1783 }
1784
1785 return TRUE;
1786 }
1787
1788 /* Find any dynamic relocs that apply to read-only sections. */
1789
1790 static bfd_boolean
1791 readonly_dynrelocs (h, inf)
1792 struct elf_link_hash_entry *h;
1793 PTR inf;
1794 {
1795 struct elf32_sparc_link_hash_entry *eh;
1796 struct elf32_sparc_dyn_relocs *p;
1797
1798 if (h->root.type == bfd_link_hash_warning)
1799 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1800
1801 eh = (struct elf32_sparc_link_hash_entry *) h;
1802 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1803 {
1804 asection *s = p->sec->output_section;
1805
1806 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1807 {
1808 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1809
1810 info->flags |= DF_TEXTREL;
1811
1812 /* Not an error, just cut short the traversal. */
1813 return FALSE;
1814 }
1815 }
1816 return TRUE;
1817 }
1818
1819 /* Return true if the dynamic symbol for a given section should be
1820 omitted when creating a shared library. */
1821
1822 static bfd_boolean
1823 elf32_sparc_omit_section_dynsym (bfd *output_bfd,
1824 struct bfd_link_info *info,
1825 asection *p)
1826 {
1827 /* We keep the .got section symbol so that explicit relocations
1828 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
1829 can be turned into relocations against the .got symbol. */
1830 if (strcmp (p->name, ".got") == 0)
1831 return FALSE;
1832
1833 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
1834 }
1835
1836 /* Set the sizes of the dynamic sections. */
1837
1838 static bfd_boolean
1839 elf32_sparc_size_dynamic_sections (output_bfd, info)
1840 bfd *output_bfd ATTRIBUTE_UNUSED;
1841 struct bfd_link_info *info;
1842 {
1843 struct elf32_sparc_link_hash_table *htab;
1844 bfd *dynobj;
1845 asection *s;
1846 bfd *ibfd;
1847
1848 htab = elf32_sparc_hash_table (info);
1849 dynobj = htab->elf.dynobj;
1850 BFD_ASSERT (dynobj != NULL);
1851
1852 if (elf_hash_table (info)->dynamic_sections_created)
1853 {
1854 /* Set the contents of the .interp section to the interpreter. */
1855 if (info->executable)
1856 {
1857 s = bfd_get_section_by_name (dynobj, ".interp");
1858 BFD_ASSERT (s != NULL);
1859 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1860 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1861 }
1862 }
1863
1864 /* Set up .got offsets for local syms, and space for local dynamic
1865 relocs. */
1866 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1867 {
1868 bfd_signed_vma *local_got;
1869 bfd_signed_vma *end_local_got;
1870 char *local_tls_type;
1871 bfd_size_type locsymcount;
1872 Elf_Internal_Shdr *symtab_hdr;
1873 asection *srel;
1874
1875 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
1876 continue;
1877
1878 for (s = ibfd->sections; s != NULL; s = s->next)
1879 {
1880 struct elf32_sparc_dyn_relocs *p;
1881
1882 for (p = *((struct elf32_sparc_dyn_relocs **)
1883 &elf_section_data (s)->local_dynrel);
1884 p != NULL;
1885 p = p->next)
1886 {
1887 if (!bfd_is_abs_section (p->sec)
1888 && bfd_is_abs_section (p->sec->output_section))
1889 {
1890 /* Input section has been discarded, either because
1891 it is a copy of a linkonce section or due to
1892 linker script /DISCARD/, so we'll be discarding
1893 the relocs too. */
1894 }
1895 else if (p->count != 0)
1896 {
1897 srel = elf_section_data (p->sec)->sreloc;
1898 srel->size += p->count * sizeof (Elf32_External_Rela);
1899 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1900 info->flags |= DF_TEXTREL;
1901 }
1902 }
1903 }
1904
1905 local_got = elf_local_got_refcounts (ibfd);
1906 if (!local_got)
1907 continue;
1908
1909 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
1910 locsymcount = symtab_hdr->sh_info;
1911 end_local_got = local_got + locsymcount;
1912 local_tls_type = elf32_sparc_local_got_tls_type (ibfd);
1913 s = htab->sgot;
1914 srel = htab->srelgot;
1915 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
1916 {
1917 if (*local_got > 0)
1918 {
1919 *local_got = s->size;
1920 s->size += 4;
1921 if (*local_tls_type == GOT_TLS_GD)
1922 s->size += 4;
1923 if (info->shared
1924 || *local_tls_type == GOT_TLS_GD
1925 || *local_tls_type == GOT_TLS_IE)
1926 srel->size += sizeof (Elf32_External_Rela);
1927 }
1928 else
1929 *local_got = (bfd_vma) -1;
1930 }
1931 }
1932
1933 if (htab->tls_ldm_got.refcount > 0)
1934 {
1935 /* Allocate 2 got entries and 1 dynamic reloc for
1936 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
1937 htab->tls_ldm_got.offset = htab->sgot->size;
1938 htab->sgot->size += 8;
1939 htab->srelgot->size += sizeof (Elf32_External_Rela);
1940 }
1941 else
1942 htab->tls_ldm_got.offset = -1;
1943
1944 /* Allocate global sym .plt and .got entries, and space for global
1945 sym dynamic relocs. */
1946 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
1947
1948 if (elf_hash_table (info)->dynamic_sections_created)
1949 {
1950 /* Make space for the trailing nop in .plt. */
1951 if (htab->splt->size > 0)
1952 htab->splt->size += 4;
1953
1954 /* If the .got section is more than 0x1000 bytes, we add
1955 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1956 bit relocations have a greater chance of working. */
1957 if (htab->sgot->size >= 0x1000
1958 && elf_hash_table (info)->hgot->root.u.def.value == 0)
1959 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
1960 }
1961
1962 /* The check_relocs and adjust_dynamic_symbol entry points have
1963 determined the sizes of the various dynamic sections. Allocate
1964 memory for them. */
1965 for (s = dynobj->sections; s != NULL; s = s->next)
1966 {
1967 const char *name;
1968 bfd_boolean strip = FALSE;
1969
1970 if ((s->flags & SEC_LINKER_CREATED) == 0)
1971 continue;
1972
1973 /* It's OK to base decisions on the section name, because none
1974 of the dynobj section names depend upon the input files. */
1975 name = bfd_get_section_name (dynobj, s);
1976
1977 if (strncmp (name, ".rela", 5) == 0)
1978 {
1979 if (s->size == 0)
1980 {
1981 /* If we don't need this section, strip it from the
1982 output file. This is to handle .rela.bss and
1983 .rel.plt. We must create it in
1984 create_dynamic_sections, because it must be created
1985 before the linker maps input sections to output
1986 sections. The linker does that before
1987 adjust_dynamic_symbol is called, and it is that
1988 function which decides whether anything needs to go
1989 into these sections. */
1990 strip = TRUE;
1991 }
1992 else
1993 {
1994 /* We use the reloc_count field as a counter if we need
1995 to copy relocs into the output file. */
1996 s->reloc_count = 0;
1997 }
1998 }
1999 else if (s != htab->splt && s != htab->sgot)
2000 {
2001 /* It's not one of our sections, so don't allocate space. */
2002 continue;
2003 }
2004
2005 if (strip)
2006 {
2007 _bfd_strip_section_from_output (info, s);
2008 continue;
2009 }
2010
2011 /* Allocate memory for the section contents. */
2012 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
2013 Unused entries should be reclaimed before the section's contents
2014 are written out, but at the moment this does not happen. Thus in
2015 order to prevent writing out garbage, we initialise the section's
2016 contents to zero. */
2017 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2018 if (s->contents == NULL && s->size != 0)
2019 return FALSE;
2020 }
2021
2022 if (elf_hash_table (info)->dynamic_sections_created)
2023 {
2024 /* Add some entries to the .dynamic section. We fill in the
2025 values later, in elf32_sparc_finish_dynamic_sections, but we
2026 must add the entries now so that we get the correct size for
2027 the .dynamic section. The DT_DEBUG entry is filled in by the
2028 dynamic linker and used by the debugger. */
2029 #define add_dynamic_entry(TAG, VAL) \
2030 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2031
2032 if (info->executable)
2033 {
2034 if (!add_dynamic_entry (DT_DEBUG, 0))
2035 return FALSE;
2036 }
2037
2038 if (htab->srelplt->size != 0)
2039 {
2040 if (!add_dynamic_entry (DT_PLTGOT, 0)
2041 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2042 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2043 || !add_dynamic_entry (DT_JMPREL, 0))
2044 return FALSE;
2045 }
2046
2047 if (!add_dynamic_entry (DT_RELA, 0)
2048 || !add_dynamic_entry (DT_RELASZ, 0)
2049 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2050 return FALSE;
2051
2052 /* If any dynamic relocs apply to a read-only section,
2053 then we need a DT_TEXTREL entry. */
2054 if ((info->flags & DF_TEXTREL) == 0)
2055 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2056 (PTR) info);
2057
2058 if (info->flags & DF_TEXTREL)
2059 {
2060 if (!add_dynamic_entry (DT_TEXTREL, 0))
2061 return FALSE;
2062 }
2063 }
2064 #undef add_dynamic_entry
2065
2066 return TRUE;
2067 }
2068
2069 struct elf32_sparc_section_data
2070 {
2071 struct bfd_elf_section_data elf;
2072 unsigned int do_relax;
2073 };
2074
2075 #define sec_do_relax(sec) \
2076 ((struct elf32_sparc_section_data *) elf_section_data (sec))->do_relax
2077
2078 static bfd_boolean
2079 elf32_sparc_new_section_hook (abfd, sec)
2080 bfd *abfd;
2081 asection *sec;
2082 {
2083 struct elf32_sparc_section_data *sdata;
2084 bfd_size_type amt = sizeof (*sdata);
2085
2086 sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt);
2087 if (sdata == NULL)
2088 return FALSE;
2089 sec->used_by_bfd = (PTR) sdata;
2090
2091 return _bfd_elf_new_section_hook (abfd, sec);
2092 }
2093
2094 static bfd_boolean
2095 elf32_sparc_relax_section (abfd, section, link_info, again)
2096 bfd *abfd ATTRIBUTE_UNUSED;
2097 asection *section ATTRIBUTE_UNUSED;
2098 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
2099 bfd_boolean *again;
2100 {
2101 *again = FALSE;
2102 sec_do_relax (section) = 1;
2103 return TRUE;
2104 }
2105
2106 /* Return the base VMA address which should be subtracted from real addresses
2107 when resolving @dtpoff relocation.
2108 This is PT_TLS segment p_vaddr. */
2109
2110 static bfd_vma
2111 dtpoff_base (info)
2112 struct bfd_link_info *info;
2113 {
2114 /* If tls_sec is NULL, we should have signalled an error already. */
2115 if (elf_hash_table (info)->tls_sec == NULL)
2116 return 0;
2117 return elf_hash_table (info)->tls_sec->vma;
2118 }
2119
2120 /* Return the relocation value for @tpoff relocation
2121 if STT_TLS virtual address is ADDRESS. */
2122
2123 static bfd_vma
2124 tpoff (info, address)
2125 struct bfd_link_info *info;
2126 bfd_vma address;
2127 {
2128 struct elf_link_hash_table *htab = elf_hash_table (info);
2129
2130 /* If tls_sec is NULL, we should have signalled an error already. */
2131 if (htab->tls_sec == NULL)
2132 return 0;
2133 return address - htab->tls_size - htab->tls_sec->vma;
2134 }
2135
2136 /* Relocate a SPARC ELF section. */
2137
2138 static bfd_boolean
2139 elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
2140 contents, relocs, local_syms, local_sections)
2141 bfd *output_bfd;
2142 struct bfd_link_info *info;
2143 bfd *input_bfd;
2144 asection *input_section;
2145 bfd_byte *contents;
2146 Elf_Internal_Rela *relocs;
2147 Elf_Internal_Sym *local_syms;
2148 asection **local_sections;
2149 {
2150 struct elf32_sparc_link_hash_table *htab;
2151 Elf_Internal_Shdr *symtab_hdr;
2152 struct elf_link_hash_entry **sym_hashes;
2153 bfd_vma *local_got_offsets;
2154 bfd_vma got_base;
2155 asection *sreloc;
2156 Elf_Internal_Rela *rel;
2157 Elf_Internal_Rela *relend;
2158
2159 if (info->relocatable)
2160 return TRUE;
2161
2162 htab = elf32_sparc_hash_table (info);
2163 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2164 sym_hashes = elf_sym_hashes (input_bfd);
2165 local_got_offsets = elf_local_got_offsets (input_bfd);
2166
2167 if (elf_hash_table (info)->hgot == NULL)
2168 got_base = 0;
2169 else
2170 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2171
2172 sreloc = elf_section_data (input_section)->sreloc;
2173
2174 rel = relocs;
2175 relend = relocs + input_section->reloc_count;
2176 for (; rel < relend; rel++)
2177 {
2178 int r_type, tls_type;
2179 reloc_howto_type *howto;
2180 unsigned long r_symndx;
2181 struct elf_link_hash_entry *h;
2182 Elf_Internal_Sym *sym;
2183 asection *sec;
2184 bfd_vma relocation, off;
2185 bfd_reloc_status_type r;
2186 bfd_boolean is_plt = FALSE;
2187 bfd_boolean unresolved_reloc;
2188
2189 r_type = ELF32_R_TYPE (rel->r_info);
2190
2191 if (r_type == R_SPARC_GNU_VTINHERIT
2192 || r_type == R_SPARC_GNU_VTENTRY)
2193 continue;
2194
2195 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2196 {
2197 bfd_set_error (bfd_error_bad_value);
2198 return FALSE;
2199 }
2200 howto = _bfd_sparc_elf_howto_table + r_type;
2201
2202 /* This is a final link. */
2203 r_symndx = ELF32_R_SYM (rel->r_info);
2204 h = NULL;
2205 sym = NULL;
2206 sec = NULL;
2207 unresolved_reloc = FALSE;
2208 if (r_symndx < symtab_hdr->sh_info)
2209 {
2210 sym = local_syms + r_symndx;
2211 sec = local_sections[r_symndx];
2212 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2213 }
2214 else
2215 {
2216 bfd_boolean warned ATTRIBUTE_UNUSED;
2217
2218 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2219 r_symndx, symtab_hdr, sym_hashes,
2220 h, sec, relocation,
2221 unresolved_reloc, warned);
2222 }
2223
2224 switch (r_type)
2225 {
2226 case R_SPARC_GOT10:
2227 case R_SPARC_GOT13:
2228 case R_SPARC_GOT22:
2229 /* Relocation is to the entry for this symbol in the global
2230 offset table. */
2231 if (htab->sgot == NULL)
2232 abort ();
2233
2234 if (h != NULL)
2235 {
2236 bfd_boolean dyn;
2237
2238 off = h->got.offset;
2239 BFD_ASSERT (off != (bfd_vma) -1);
2240 dyn = elf_hash_table (info)->dynamic_sections_created;
2241
2242 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2243 || (info->shared
2244 && (info->symbolic
2245 || h->dynindx == -1
2246 || h->forced_local)
2247 && h->def_regular))
2248 {
2249 /* This is actually a static link, or it is a
2250 -Bsymbolic link and the symbol is defined
2251 locally, or the symbol was forced to be local
2252 because of a version file. We must initialize
2253 this entry in the global offset table. Since the
2254 offset must always be a multiple of 4, we use the
2255 least significant bit to record whether we have
2256 initialized it already.
2257
2258 When doing a dynamic link, we create a .rela.got
2259 relocation entry to initialize the value. This
2260 is done in the finish_dynamic_symbol routine. */
2261 if ((off & 1) != 0)
2262 off &= ~1;
2263 else
2264 {
2265 bfd_put_32 (output_bfd, relocation,
2266 htab->sgot->contents + off);
2267 h->got.offset |= 1;
2268 }
2269 }
2270 else
2271 unresolved_reloc = FALSE;
2272 }
2273 else
2274 {
2275 BFD_ASSERT (local_got_offsets != NULL
2276 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2277
2278 off = local_got_offsets[r_symndx];
2279
2280 /* The offset must always be a multiple of 4. We use
2281 the least significant bit to record whether we have
2282 already processed this entry. */
2283 if ((off & 1) != 0)
2284 off &= ~1;
2285 else
2286 {
2287
2288 if (info->shared)
2289 {
2290 asection *s;
2291 Elf_Internal_Rela outrel;
2292 bfd_byte *loc;
2293
2294 /* We need to generate a R_SPARC_RELATIVE reloc
2295 for the dynamic linker. */
2296 s = htab->srelgot;
2297 BFD_ASSERT (s != NULL);
2298
2299 outrel.r_offset = (htab->sgot->output_section->vma
2300 + htab->sgot->output_offset
2301 + off);
2302 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2303 outrel.r_addend = relocation;
2304 relocation = 0;
2305 loc = s->contents;
2306 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
2307 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2308 }
2309
2310 bfd_put_32 (output_bfd, relocation,
2311 htab->sgot->contents + off);
2312 local_got_offsets[r_symndx] |= 1;
2313 }
2314 }
2315 relocation = htab->sgot->output_offset + off - got_base;
2316 break;
2317
2318 case R_SPARC_PLT32:
2319 if (h == NULL || h->plt.offset == (bfd_vma) -1)
2320 {
2321 r_type = R_SPARC_32;
2322 goto r_sparc_plt32;
2323 }
2324 /* Fall through. */
2325 case R_SPARC_WPLT30:
2326 r_sparc_wplt30:
2327 /* Relocation is to the entry for this symbol in the
2328 procedure linkage table. */
2329
2330 /* The Solaris native assembler will generate a WPLT30 reloc
2331 for a local symbol if you assemble a call from one
2332 section to another when using -K pic. We treat it as
2333 WDISP30. */
2334 if (h == NULL)
2335 break;
2336
2337 if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
2338 {
2339 /* We didn't make a PLT entry for this symbol. This
2340 happens when statically linking PIC code, or when
2341 using -Bsymbolic. */
2342 break;
2343 }
2344
2345 relocation = (htab->splt->output_section->vma
2346 + htab->splt->output_offset
2347 + h->plt.offset);
2348 unresolved_reloc = FALSE;
2349 if (r_type == R_SPARC_PLT32)
2350 {
2351 r_type = R_SPARC_32;
2352 is_plt = TRUE;
2353 goto r_sparc_plt32;
2354 }
2355 break;
2356
2357 case R_SPARC_PC10:
2358 case R_SPARC_PC22:
2359 if (h != NULL
2360 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2361 break;
2362 /* Fall through. */
2363 case R_SPARC_DISP8:
2364 case R_SPARC_DISP16:
2365 case R_SPARC_DISP32:
2366 case R_SPARC_WDISP30:
2367 case R_SPARC_WDISP22:
2368 case R_SPARC_WDISP19:
2369 case R_SPARC_WDISP16:
2370 case R_SPARC_8:
2371 case R_SPARC_16:
2372 case R_SPARC_32:
2373 case R_SPARC_HI22:
2374 case R_SPARC_22:
2375 case R_SPARC_13:
2376 case R_SPARC_LO10:
2377 case R_SPARC_UA16:
2378 case R_SPARC_UA32:
2379 r_sparc_plt32:
2380 /* r_symndx will be zero only for relocs against symbols
2381 from removed linkonce sections, or sections discarded by
2382 a linker script. */
2383 if (r_symndx == 0
2384 || (input_section->flags & SEC_ALLOC) == 0)
2385 break;
2386
2387 if ((info->shared
2388 && (h == NULL
2389 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2390 || h->root.type != bfd_link_hash_undefweak)
2391 && (! howto->pc_relative
2392 || (h != NULL
2393 && h->dynindx != -1
2394 && (! info->symbolic
2395 || !h->def_regular))))
2396 || (!info->shared
2397 && h != NULL
2398 && h->dynindx != -1
2399 && !h->non_got_ref
2400 && ((h->def_dynamic
2401 && !h->def_regular)
2402 || h->root.type == bfd_link_hash_undefweak
2403 || h->root.type == bfd_link_hash_undefined)))
2404 {
2405 Elf_Internal_Rela outrel;
2406 bfd_byte *loc;
2407 bfd_boolean skip, relocate = FALSE;
2408
2409 /* When generating a shared object, these relocations
2410 are copied into the output file to be resolved at run
2411 time. */
2412
2413 BFD_ASSERT (sreloc != NULL);
2414
2415 skip = FALSE;
2416
2417 outrel.r_offset =
2418 _bfd_elf_section_offset (output_bfd, info, input_section,
2419 rel->r_offset);
2420 if (outrel.r_offset == (bfd_vma) -1)
2421 skip = TRUE;
2422 else if (outrel.r_offset == (bfd_vma) -2)
2423 skip = TRUE, relocate = TRUE;
2424 outrel.r_offset += (input_section->output_section->vma
2425 + input_section->output_offset);
2426
2427 /* Optimize unaligned reloc usage now that we know where
2428 it finally resides. */
2429 switch (r_type)
2430 {
2431 case R_SPARC_16:
2432 if (outrel.r_offset & 1)
2433 r_type = R_SPARC_UA16;
2434 break;
2435 case R_SPARC_UA16:
2436 if (!(outrel.r_offset & 1))
2437 r_type = R_SPARC_16;
2438 break;
2439 case R_SPARC_32:
2440 if (outrel.r_offset & 3)
2441 r_type = R_SPARC_UA32;
2442 break;
2443 case R_SPARC_UA32:
2444 if (!(outrel.r_offset & 3))
2445 r_type = R_SPARC_32;
2446 break;
2447 case R_SPARC_DISP8:
2448 case R_SPARC_DISP16:
2449 case R_SPARC_DISP32:
2450 /* If the symbol is not dynamic, we should not keep
2451 a dynamic relocation. But an .rela.* slot has been
2452 allocated for it, output R_SPARC_NONE.
2453 FIXME: Add code tracking needed dynamic relocs as
2454 e.g. i386 has. */
2455 if (h->dynindx == -1)
2456 skip = TRUE, relocate = TRUE;
2457 break;
2458 }
2459
2460 if (skip)
2461 memset (&outrel, 0, sizeof outrel);
2462 /* h->dynindx may be -1 if the symbol was marked to
2463 become local. */
2464 else if (h != NULL && ! is_plt
2465 && ((! info->symbolic && h->dynindx != -1)
2466 || !h->def_regular))
2467 {
2468 BFD_ASSERT (h->dynindx != -1);
2469 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2470 outrel.r_addend = rel->r_addend;
2471 }
2472 else
2473 {
2474 if (r_type == R_SPARC_32)
2475 {
2476 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2477 outrel.r_addend = relocation + rel->r_addend;
2478 }
2479 else
2480 {
2481 long indx;
2482
2483 if (is_plt)
2484 sec = htab->splt;
2485
2486 if (bfd_is_abs_section (sec))
2487 indx = 0;
2488 else if (sec == NULL || sec->owner == NULL)
2489 {
2490 bfd_set_error (bfd_error_bad_value);
2491 return FALSE;
2492 }
2493 else
2494 {
2495 asection *osec;
2496
2497 osec = sec->output_section;
2498 indx = elf_section_data (osec)->dynindx;
2499
2500 /* FIXME: we really should be able to link non-pic
2501 shared libraries. */
2502 if (indx == 0)
2503 {
2504 BFD_FAIL ();
2505 (*_bfd_error_handler)
2506 (_("%B: probably compiled without -fPIC?"),
2507 input_bfd);
2508 bfd_set_error (bfd_error_bad_value);
2509 return FALSE;
2510 }
2511 }
2512
2513 outrel.r_info = ELF32_R_INFO (indx, r_type);
2514 outrel.r_addend = relocation + rel->r_addend;
2515 }
2516 }
2517
2518 loc = sreloc->contents;
2519 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2520 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2521
2522 /* This reloc will be computed at runtime, so there's no
2523 need to do anything now. */
2524 if (! relocate)
2525 continue;
2526 }
2527 break;
2528
2529 case R_SPARC_TLS_GD_HI22:
2530 if (! elf32_sparc_tdata (input_bfd)->has_tlsgd)
2531 {
2532 /* R_SPARC_REV32 used the same reloc number as
2533 R_SPARC_TLS_GD_HI22. */
2534 r_type = R_SPARC_REV32;
2535 break;
2536 }
2537 /* Fall through */
2538
2539 case R_SPARC_TLS_GD_LO10:
2540 case R_SPARC_TLS_IE_HI22:
2541 case R_SPARC_TLS_IE_LO10:
2542 r_type = elf32_sparc_tls_transition (info, input_bfd, r_type,
2543 h == NULL);
2544 tls_type = GOT_UNKNOWN;
2545 if (h == NULL && local_got_offsets)
2546 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2547 else if (h != NULL)
2548 {
2549 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2550 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
2551 switch (ELF32_R_TYPE (rel->r_info))
2552 {
2553 case R_SPARC_TLS_GD_HI22:
2554 case R_SPARC_TLS_IE_HI22:
2555 r_type = R_SPARC_TLS_LE_HIX22;
2556 break;
2557 default:
2558 r_type = R_SPARC_TLS_LE_LOX10;
2559 break;
2560 }
2561 }
2562 if (tls_type == GOT_TLS_IE)
2563 switch (r_type)
2564 {
2565 case R_SPARC_TLS_GD_HI22:
2566 r_type = R_SPARC_TLS_IE_HI22;
2567 break;
2568 case R_SPARC_TLS_GD_LO10:
2569 r_type = R_SPARC_TLS_IE_LO10;
2570 break;
2571 }
2572
2573 if (r_type == R_SPARC_TLS_LE_HIX22)
2574 {
2575 relocation = tpoff (info, relocation);
2576 break;
2577 }
2578 if (r_type == R_SPARC_TLS_LE_LOX10)
2579 {
2580 /* Change add into xor. */
2581 relocation = tpoff (info, relocation);
2582 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
2583 contents + rel->r_offset)
2584 | 0x80182000), contents + rel->r_offset);
2585 break;
2586 }
2587
2588 if (h != NULL)
2589 {
2590 off = h->got.offset;
2591 h->got.offset |= 1;
2592 }
2593 else
2594 {
2595 BFD_ASSERT (local_got_offsets != NULL);
2596 off = local_got_offsets[r_symndx];
2597 local_got_offsets[r_symndx] |= 1;
2598 }
2599
2600 r_sparc_tlsldm:
2601 if (htab->sgot == NULL)
2602 abort ();
2603
2604 if ((off & 1) != 0)
2605 off &= ~1;
2606 else
2607 {
2608 Elf_Internal_Rela outrel;
2609 Elf32_External_Rela *loc;
2610 int dr_type, indx;
2611
2612 if (htab->srelgot == NULL)
2613 abort ();
2614
2615 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
2616 outrel.r_offset = (htab->sgot->output_section->vma
2617 + htab->sgot->output_offset + off);
2618 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2619 if (r_type == R_SPARC_TLS_IE_HI22
2620 || r_type == R_SPARC_TLS_IE_LO10)
2621 dr_type = R_SPARC_TLS_TPOFF32;
2622 else
2623 dr_type = R_SPARC_TLS_DTPMOD32;
2624 if (dr_type == R_SPARC_TLS_TPOFF32 && indx == 0)
2625 outrel.r_addend = relocation - dtpoff_base (info);
2626 else
2627 outrel.r_addend = 0;
2628 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2629 loc = (Elf32_External_Rela *) htab->srelgot->contents;
2630 loc += htab->srelgot->reloc_count++;
2631 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2632 (bfd_byte *) loc);
2633
2634 if (r_type == R_SPARC_TLS_GD_HI22
2635 || r_type == R_SPARC_TLS_GD_LO10)
2636 {
2637 if (indx == 0)
2638 {
2639 BFD_ASSERT (! unresolved_reloc);
2640 bfd_put_32 (output_bfd,
2641 relocation - dtpoff_base (info),
2642 htab->sgot->contents + off + 4);
2643 }
2644 else
2645 {
2646 bfd_put_32 (output_bfd, 0,
2647 htab->sgot->contents + off + 4);
2648 outrel.r_info = ELF32_R_INFO (indx,
2649 R_SPARC_TLS_DTPOFF32);
2650 outrel.r_offset += 4;
2651 htab->srelgot->reloc_count++;
2652 loc++;
2653 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2654 (bfd_byte *) loc);
2655 }
2656 }
2657 else if (dr_type == R_SPARC_TLS_DTPMOD32)
2658 {
2659 bfd_put_32 (output_bfd, 0,
2660 htab->sgot->contents + off + 4);
2661 }
2662 }
2663
2664 if (off >= (bfd_vma) -2)
2665 abort ();
2666
2667 relocation = htab->sgot->output_offset + off - got_base;
2668 unresolved_reloc = FALSE;
2669 howto = _bfd_sparc_elf_howto_table + r_type;
2670 break;
2671
2672 case R_SPARC_TLS_LDM_HI22:
2673 case R_SPARC_TLS_LDM_LO10:
2674 if (! info->shared)
2675 {
2676 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2677 continue;
2678 }
2679 off = htab->tls_ldm_got.offset;
2680 htab->tls_ldm_got.offset |= 1;
2681 goto r_sparc_tlsldm;
2682
2683 case R_SPARC_TLS_LDO_HIX22:
2684 case R_SPARC_TLS_LDO_LOX10:
2685 if (info->shared)
2686 relocation -= dtpoff_base (info);
2687 else
2688 relocation = tpoff (info, relocation);
2689 break;
2690
2691 case R_SPARC_TLS_LE_HIX22:
2692 case R_SPARC_TLS_LE_LOX10:
2693 if (info->shared)
2694 {
2695 Elf_Internal_Rela outrel;
2696 bfd_boolean skip, relocate = FALSE;
2697
2698 BFD_ASSERT (sreloc != NULL);
2699 skip = FALSE;
2700 outrel.r_offset =
2701 _bfd_elf_section_offset (output_bfd, info, input_section,
2702 rel->r_offset);
2703 if (outrel.r_offset == (bfd_vma) -1)
2704 skip = TRUE;
2705 else if (outrel.r_offset == (bfd_vma) -2)
2706 skip = TRUE, relocate = TRUE;
2707 outrel.r_offset += (input_section->output_section->vma
2708 + input_section->output_offset);
2709 if (skip)
2710 memset (&outrel, 0, sizeof outrel);
2711 else
2712 {
2713 outrel.r_info = ELF32_R_INFO (0, r_type);
2714 outrel.r_addend = relocation - dtpoff_base (info)
2715 + rel->r_addend;
2716 }
2717
2718 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2719 (bfd_byte *) (((Elf32_External_Rela *)
2720 sreloc->contents)
2721 + sreloc->reloc_count));
2722 ++sreloc->reloc_count;
2723 continue;
2724 }
2725 relocation = tpoff (info, relocation);
2726 break;
2727
2728 case R_SPARC_TLS_LDM_CALL:
2729 if (! info->shared)
2730 {
2731 /* mov %g0, %o0 */
2732 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
2733 continue;
2734 }
2735 /* Fall through */
2736
2737 case R_SPARC_TLS_GD_CALL:
2738 tls_type = GOT_UNKNOWN;
2739 if (h == NULL && local_got_offsets)
2740 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2741 else if (h != NULL)
2742 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2743 if (! info->shared
2744 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
2745 {
2746 bfd_vma insn;
2747
2748 if (!info->shared && (h == NULL || h->dynindx == -1))
2749 {
2750 /* GD -> LE */
2751 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2752 continue;
2753 }
2754
2755 /* GD -> IE */
2756 if (rel + 1 < relend
2757 && ELF32_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
2758 && rel[1].r_offset == rel->r_offset + 4
2759 && ELF32_R_SYM (rel[1].r_info) == r_symndx
2760 && (((insn = bfd_get_32 (input_bfd,
2761 contents + rel[1].r_offset))
2762 >> 25) & 0x1f) == 8)
2763 {
2764 /* We have
2765 call __tls_get_addr, %tgd_call(foo)
2766 add %reg1, %reg2, %o0, %tgd_add(foo)
2767 and change it into IE:
2768 ld [%reg1 + %reg2], %o0, %tie_ld(foo)
2769 add %g7, %o0, %o0, %tie_add(foo).
2770 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
2771 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2. */
2772 bfd_put_32 (output_bfd, insn | 0xc0000000,
2773 contents + rel->r_offset);
2774 bfd_put_32 (output_bfd, 0x9001c008,
2775 contents + rel->r_offset + 4);
2776 rel++;
2777 continue;
2778 }
2779
2780 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
2781 continue;
2782 }
2783
2784 h = (struct elf_link_hash_entry *)
2785 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
2786 FALSE, TRUE);
2787 BFD_ASSERT (h != NULL);
2788 r_type = R_SPARC_WPLT30;
2789 howto = _bfd_sparc_elf_howto_table + r_type;
2790 goto r_sparc_wplt30;
2791
2792 case R_SPARC_TLS_GD_ADD:
2793 tls_type = GOT_UNKNOWN;
2794 if (h == NULL && local_got_offsets)
2795 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2796 else if (h != NULL)
2797 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2798 if (! info->shared || tls_type == GOT_TLS_IE)
2799 {
2800 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
2801 changed into IE:
2802 ld [%reg1 + %reg2], %reg3, %tie_ld(foo)
2803 or LE:
2804 add %g7, %reg2, %reg3. */
2805 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2806 if ((h != NULL && h->dynindx != -1) || info->shared)
2807 relocation = insn | 0xc0000000;
2808 else
2809 relocation = (insn & ~0x7c000) | 0x1c000;
2810 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2811 }
2812 continue;
2813
2814 case R_SPARC_TLS_LDM_ADD:
2815 if (! info->shared)
2816 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2817 continue;
2818
2819 case R_SPARC_TLS_LDO_ADD:
2820 if (! info->shared)
2821 {
2822 /* Change rs1 into %g7. */
2823 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2824 insn = (insn & ~0x7c000) | 0x1c000;
2825 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2826 }
2827 continue;
2828
2829 case R_SPARC_TLS_IE_LD:
2830 case R_SPARC_TLS_IE_LDX:
2831 if (! info->shared && (h == NULL || h->dynindx == -1))
2832 {
2833 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2834 int rs2 = insn & 0x1f;
2835 int rd = (insn >> 25) & 0x1f;
2836
2837 if (rs2 == rd)
2838 relocation = SPARC_NOP;
2839 else
2840 relocation = 0x80100000 | (insn & 0x3e00001f);
2841 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2842 }
2843 continue;
2844
2845 case R_SPARC_TLS_IE_ADD:
2846 /* Totally useless relocation. */
2847 continue;
2848
2849 case R_SPARC_TLS_DTPOFF32:
2850 relocation -= dtpoff_base (info);
2851 break;
2852
2853 default:
2854 break;
2855 }
2856
2857 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2858 because such sections are not SEC_ALLOC and thus ld.so will
2859 not process them. */
2860 if (unresolved_reloc
2861 && !((input_section->flags & SEC_DEBUGGING) != 0
2862 && h->def_dynamic))
2863 (*_bfd_error_handler)
2864 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
2865 input_bfd,
2866 input_section,
2867 (long) rel->r_offset,
2868 h->root.root.string);
2869
2870 r = bfd_reloc_continue;
2871 if (r_type == R_SPARC_WDISP16)
2872 {
2873 bfd_vma x;
2874
2875 relocation += rel->r_addend;
2876 relocation -= (input_section->output_section->vma
2877 + input_section->output_offset);
2878 relocation -= rel->r_offset;
2879
2880 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2881 x |= ((((relocation >> 2) & 0xc000) << 6)
2882 | ((relocation >> 2) & 0x3fff));
2883 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2884
2885 if ((bfd_signed_vma) relocation < - 0x40000
2886 || (bfd_signed_vma) relocation > 0x3ffff)
2887 r = bfd_reloc_overflow;
2888 else
2889 r = bfd_reloc_ok;
2890 }
2891 else if (r_type == R_SPARC_REV32)
2892 {
2893 bfd_vma x;
2894
2895 relocation = relocation + rel->r_addend;
2896
2897 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2898 x = x + relocation;
2899 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
2900 r = bfd_reloc_ok;
2901 }
2902 else if (r_type == R_SPARC_TLS_LDO_HIX22
2903 || r_type == R_SPARC_TLS_LE_HIX22)
2904 {
2905 bfd_vma x;
2906
2907 relocation += rel->r_addend;
2908 relocation = relocation ^ 0xffffffff;
2909
2910 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2911 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
2912 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2913 r = bfd_reloc_ok;
2914 }
2915 else if (r_type == R_SPARC_TLS_LDO_LOX10
2916 || r_type == R_SPARC_TLS_LE_LOX10)
2917 {
2918 bfd_vma x;
2919
2920 relocation += rel->r_addend;
2921 relocation = (relocation & 0x3ff) | 0x1c00;
2922
2923 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2924 x = (x & ~(bfd_vma) 0x1fff) | relocation;
2925 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2926
2927 r = bfd_reloc_ok;
2928 }
2929 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
2930 && sec_do_relax (input_section)
2931 && rel->r_offset + 4 < input_section->size)
2932 {
2933 #define G0 0
2934 #define O7 15
2935 #define XCC (2 << 20)
2936 #define COND(x) (((x)&0xf)<<25)
2937 #define CONDA COND(0x8)
2938 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2939 #define INSN_BA (F2(0,2) | CONDA)
2940 #define INSN_OR F3(2, 0x2, 0)
2941 #define INSN_NOP F2(0,4)
2942
2943 bfd_vma x, y;
2944
2945 /* If the instruction is a call with either:
2946 restore
2947 arithmetic instruction with rd == %o7
2948 where rs1 != %o7 and rs2 if it is register != %o7
2949 then we can optimize if the call destination is near
2950 by changing the call into a branch always. */
2951 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2952 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
2953 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
2954 {
2955 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
2956 || ((y & OP3(0x28)) == 0 /* arithmetic */
2957 && (y & RD(~0)) == RD(O7)))
2958 && (y & RS1(~0)) != RS1(O7)
2959 && ((y & F3I(~0))
2960 || (y & RS2(~0)) != RS2(O7)))
2961 {
2962 bfd_vma reloc;
2963
2964 reloc = relocation + rel->r_addend - rel->r_offset;
2965 reloc -= (input_section->output_section->vma
2966 + input_section->output_offset);
2967
2968 /* Ensure the reloc fits into simm22. */
2969 if ((reloc & 3) == 0
2970 && ((reloc & ~(bfd_vma)0x7fffff) == 0
2971 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
2972 {
2973 reloc >>= 2;
2974
2975 /* Check whether it fits into simm19 on v9. */
2976 if (((reloc & 0x3c0000) == 0
2977 || (reloc & 0x3c0000) == 0x3c0000)
2978 && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
2979 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
2980 else
2981 x = INSN_BA | (reloc & 0x3fffff); /* ba */
2982 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2983 r = bfd_reloc_ok;
2984 if (rel->r_offset >= 4
2985 && (y & (0xffffffff ^ RS1(~0)))
2986 == (INSN_OR | RD(O7) | RS2(G0)))
2987 {
2988 bfd_vma z;
2989 unsigned int reg;
2990
2991 z = bfd_get_32 (input_bfd,
2992 contents + rel->r_offset - 4);
2993 if ((z & (0xffffffff ^ RD(~0)))
2994 != (INSN_OR | RS1(O7) | RS2(G0)))
2995 break;
2996
2997 /* The sequence was
2998 or %o7, %g0, %rN
2999 call foo
3000 or %rN, %g0, %o7
3001
3002 If call foo was replaced with ba, replace
3003 or %rN, %g0, %o7 with nop. */
3004
3005 reg = (y & RS1(~0)) >> 14;
3006 if (reg != ((z & RD(~0)) >> 25)
3007 || reg == G0 || reg == O7)
3008 break;
3009
3010 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
3011 contents + rel->r_offset + 4);
3012 }
3013
3014 }
3015 }
3016 }
3017 }
3018
3019 if (r == bfd_reloc_continue)
3020 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3021 contents, rel->r_offset,
3022 relocation, rel->r_addend);
3023
3024 if (r != bfd_reloc_ok)
3025 {
3026 switch (r)
3027 {
3028 default:
3029 case bfd_reloc_outofrange:
3030 abort ();
3031 case bfd_reloc_overflow:
3032 {
3033 const char *name;
3034
3035 if (h != NULL)
3036 name = NULL;
3037 else
3038 {
3039 name = bfd_elf_string_from_elf_section (input_bfd,
3040 symtab_hdr->sh_link,
3041 sym->st_name);
3042 if (name == NULL)
3043 return FALSE;
3044 if (*name == '\0')
3045 name = bfd_section_name (input_bfd, sec);
3046 }
3047 if (! ((*info->callbacks->reloc_overflow)
3048 (info, (h ? &h->root : NULL), name, howto->name,
3049 (bfd_vma) 0, input_bfd, input_section,
3050 rel->r_offset)))
3051 return FALSE;
3052 }
3053 break;
3054 }
3055 }
3056 }
3057
3058 return TRUE;
3059 }
3060
3061 /* Finish up dynamic symbol handling. We set the contents of various
3062 dynamic sections here. */
3063
3064 static bfd_boolean
3065 elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym)
3066 bfd *output_bfd;
3067 struct bfd_link_info *info;
3068 struct elf_link_hash_entry *h;
3069 Elf_Internal_Sym *sym;
3070 {
3071 bfd *dynobj;
3072 struct elf32_sparc_link_hash_table *htab;
3073
3074 htab = elf32_sparc_hash_table (info);
3075 dynobj = htab->elf.dynobj;
3076
3077 if (h->plt.offset != (bfd_vma) -1)
3078 {
3079 asection *splt;
3080 asection *srela;
3081 Elf_Internal_Rela rela;
3082 bfd_byte *loc;
3083
3084 /* This symbol has an entry in the procedure linkage table. Set
3085 it up. */
3086
3087 BFD_ASSERT (h->dynindx != -1);
3088
3089 splt = htab->splt;
3090 srela = htab->srelplt;
3091 BFD_ASSERT (splt != NULL && srela != NULL);
3092
3093 /* Fill in the entry in the procedure linkage table. */
3094 bfd_put_32 (output_bfd,
3095 PLT_ENTRY_WORD0 + h->plt.offset,
3096 splt->contents + h->plt.offset);
3097 bfd_put_32 (output_bfd,
3098 (PLT_ENTRY_WORD1
3099 + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)),
3100 splt->contents + h->plt.offset + 4);
3101 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3102 splt->contents + h->plt.offset + 8);
3103
3104 /* Fill in the entry in the .rela.plt section. */
3105 rela.r_offset = (splt->output_section->vma
3106 + splt->output_offset
3107 + h->plt.offset);
3108 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
3109 rela.r_addend = 0;
3110 loc = srela->contents;
3111 loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela);
3112 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3113
3114 if (!h->def_regular)
3115 {
3116 /* Mark the symbol as undefined, rather than as defined in
3117 the .plt section. Leave the value alone. */
3118 sym->st_shndx = SHN_UNDEF;
3119 /* If the symbol is weak, we do need to clear the value.
3120 Otherwise, the PLT entry would provide a definition for
3121 the symbol even if the symbol wasn't defined anywhere,
3122 and so the symbol would never be NULL. */
3123 if (!h->ref_regular_nonweak)
3124 sym->st_value = 0;
3125 }
3126 }
3127
3128 if (h->got.offset != (bfd_vma) -1
3129 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_GD
3130 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_IE)
3131 {
3132 asection *sgot;
3133 asection *srela;
3134 Elf_Internal_Rela rela;
3135 bfd_byte *loc;
3136
3137 /* This symbol has an entry in the global offset table. Set it
3138 up. */
3139
3140 sgot = htab->sgot;
3141 srela = htab->srelgot;
3142 BFD_ASSERT (sgot != NULL && srela != NULL);
3143
3144 rela.r_offset = (sgot->output_section->vma
3145 + sgot->output_offset
3146 + (h->got.offset &~ (bfd_vma) 1));
3147
3148 /* If this is a -Bsymbolic link, and the symbol is defined
3149 locally, we just want to emit a RELATIVE reloc. Likewise if
3150 the symbol was forced to be local because of a version file.
3151 The entry in the global offset table will already have been
3152 initialized in the relocate_section function. */
3153 if (info->shared
3154 && (info->symbolic || h->dynindx == -1)
3155 && h->def_regular)
3156 {
3157 asection *sec = h->root.u.def.section;
3158 rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
3159 rela.r_addend = (h->root.u.def.value
3160 + sec->output_section->vma
3161 + sec->output_offset);
3162 }
3163 else
3164 {
3165 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
3166 rela.r_addend = 0;
3167 }
3168
3169 bfd_put_32 (output_bfd, (bfd_vma) 0,
3170 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
3171 loc = srela->contents;
3172 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3173 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3174 }
3175
3176 if (h->needs_copy)
3177 {
3178 asection *s;
3179 Elf_Internal_Rela rela;
3180 bfd_byte *loc;
3181
3182 /* This symbols needs a copy reloc. Set it up. */
3183
3184 BFD_ASSERT (h->dynindx != -1);
3185
3186 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3187 ".rela.bss");
3188 BFD_ASSERT (s != NULL);
3189
3190 rela.r_offset = (h->root.u.def.value
3191 + h->root.u.def.section->output_section->vma
3192 + h->root.u.def.section->output_offset);
3193 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY);
3194 rela.r_addend = 0;
3195 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3196 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3197 }
3198
3199 /* Mark some specially defined symbols as absolute. */
3200 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3201 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3202 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3203 sym->st_shndx = SHN_ABS;
3204
3205 return TRUE;
3206 }
3207
3208 /* Finish up the dynamic sections. */
3209
3210 static bfd_boolean
3211 elf32_sparc_finish_dynamic_sections (output_bfd, info)
3212 bfd *output_bfd;
3213 struct bfd_link_info *info;
3214 {
3215 bfd *dynobj;
3216 asection *sdyn;
3217 struct elf32_sparc_link_hash_table *htab;
3218
3219 htab = elf32_sparc_hash_table (info);
3220 dynobj = htab->elf.dynobj;
3221
3222 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3223
3224 if (elf_hash_table (info)->dynamic_sections_created)
3225 {
3226 asection *splt;
3227 Elf32_External_Dyn *dyncon, *dynconend;
3228
3229 splt = bfd_get_section_by_name (dynobj, ".plt");
3230 BFD_ASSERT (splt != NULL && sdyn != NULL);
3231
3232 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3233 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3234 for (; dyncon < dynconend; dyncon++)
3235 {
3236 Elf_Internal_Dyn dyn;
3237 const char *name;
3238 bfd_boolean size;
3239
3240 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3241
3242 switch (dyn.d_tag)
3243 {
3244 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
3245 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
3246 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
3247 default: name = NULL; size = FALSE; break;
3248 }
3249
3250 if (name != NULL)
3251 {
3252 asection *s;
3253
3254 s = bfd_get_section_by_name (output_bfd, name);
3255 if (s == NULL)
3256 dyn.d_un.d_val = 0;
3257 else
3258 {
3259 if (! size)
3260 dyn.d_un.d_ptr = s->vma;
3261 else
3262 dyn.d_un.d_val = s->size;
3263 }
3264 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3265 }
3266 }
3267
3268 /* Clear the first four entries in the procedure linkage table,
3269 and put a nop in the last four bytes. */
3270 if (splt->size > 0)
3271 {
3272 memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
3273 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
3274 splt->contents + splt->size - 4);
3275 }
3276
3277 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0;
3278 }
3279
3280 /* Set the first entry in the global offset table to the address of
3281 the dynamic section. */
3282 if (htab->sgot && htab->sgot->size > 0)
3283 {
3284 if (sdyn == NULL)
3285 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents);
3286 else
3287 bfd_put_32 (output_bfd,
3288 sdyn->output_section->vma + sdyn->output_offset,
3289 htab->sgot->contents);
3290 }
3291
3292 if (htab->sgot)
3293 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3294
3295 return TRUE;
3296 }
3297 \f
3298 /* Functions for dealing with the e_flags field.
3299
3300 We don't define set_private_flags or copy_private_bfd_data because
3301 the only currently defined values are based on the bfd mach number,
3302 so we use the latter instead and defer setting e_flags until the
3303 file is written out. */
3304
3305 /* Merge backend specific data from an object file to the output
3306 object file when linking. */
3307
3308 static bfd_boolean
3309 elf32_sparc_merge_private_bfd_data (ibfd, obfd)
3310 bfd *ibfd;
3311 bfd *obfd;
3312 {
3313 bfd_boolean error;
3314 unsigned long ibfd_mach;
3315 /* FIXME: This should not be static. */
3316 static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
3317
3318 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3319 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3320 return TRUE;
3321
3322 error = FALSE;
3323
3324 ibfd_mach = bfd_get_mach (ibfd);
3325 if (bfd_mach_sparc_64bit_p (ibfd_mach))
3326 {
3327 error = TRUE;
3328 (*_bfd_error_handler)
3329 (_("%B: compiled for a 64 bit system and target is 32 bit"), ibfd);
3330 }
3331 else if ((ibfd->flags & DYNAMIC) == 0)
3332 {
3333 if (bfd_get_mach (obfd) < ibfd_mach)
3334 bfd_set_arch_mach (obfd, bfd_arch_sparc, ibfd_mach);
3335 }
3336
3337 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
3338 != previous_ibfd_e_flags)
3339 && previous_ibfd_e_flags != (unsigned long) -1)
3340 {
3341 (*_bfd_error_handler)
3342 (_("%B: linking little endian files with big endian files"), ibfd);
3343 error = TRUE;
3344 }
3345 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
3346
3347 if (error)
3348 {
3349 bfd_set_error (bfd_error_bad_value);
3350 return FALSE;
3351 }
3352
3353 return TRUE;
3354 }
3355 \f
3356 /* Set the right machine number. */
3357
3358 static bfd_boolean
3359 elf32_sparc_object_p (abfd)
3360 bfd *abfd;
3361 {
3362 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
3363 {
3364 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
3365 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3366 bfd_mach_sparc_v8plusb);
3367 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
3368 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3369 bfd_mach_sparc_v8plusa);
3370 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
3371 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3372 bfd_mach_sparc_v8plus);
3373 else
3374 return FALSE;
3375 }
3376 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
3377 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
3378 bfd_mach_sparc_sparclite_le);
3379 else
3380 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
3381 }
3382
3383 /* The final processing done just before writing out the object file.
3384 We need to set the e_machine field appropriately. */
3385
3386 static void
3387 elf32_sparc_final_write_processing (abfd, linker)
3388 bfd *abfd;
3389 bfd_boolean linker ATTRIBUTE_UNUSED;
3390 {
3391 switch (bfd_get_mach (abfd))
3392 {
3393 case bfd_mach_sparc :
3394 case bfd_mach_sparc_sparclet :
3395 case bfd_mach_sparc_sparclite :
3396 break; /* nothing to do */
3397 case bfd_mach_sparc_v8plus :
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;
3401 break;
3402 case bfd_mach_sparc_v8plusa :
3403 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3404 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3405 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
3406 break;
3407 case bfd_mach_sparc_v8plusb :
3408 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3409 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3410 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1
3411 | EF_SPARC_SUN_US3;
3412 break;
3413 case bfd_mach_sparc_sparclite_le :
3414 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
3415 break;
3416 default :
3417 abort ();
3418 break;
3419 }
3420 }
3421
3422 static enum elf_reloc_type_class
3423 elf32_sparc_reloc_type_class (rela)
3424 const Elf_Internal_Rela *rela;
3425 {
3426 switch ((int) ELF32_R_TYPE (rela->r_info))
3427 {
3428 case R_SPARC_RELATIVE:
3429 return reloc_class_relative;
3430 case R_SPARC_JMP_SLOT:
3431 return reloc_class_plt;
3432 case R_SPARC_COPY:
3433 return reloc_class_copy;
3434 default:
3435 return reloc_class_normal;
3436 }
3437 }
3438
3439 /* Return address for Ith PLT stub in section PLT, for relocation REL
3440 or (bfd_vma) -1 if it should not be included. */
3441
3442 static bfd_vma
3443 elf32_sparc_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
3444 const asection *plt ATTRIBUTE_UNUSED,
3445 const arelent *rel)
3446 {
3447 return rel->address;
3448 }
3449 \f
3450 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
3451 #define TARGET_BIG_NAME "elf32-sparc"
3452 #define ELF_ARCH bfd_arch_sparc
3453 #define ELF_MACHINE_CODE EM_SPARC
3454 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
3455 #define ELF_MAXPAGESIZE 0x10000
3456
3457 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
3458 #define bfd_elf32_bfd_link_hash_table_create \
3459 elf32_sparc_link_hash_table_create
3460 #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section
3461 #define bfd_elf32_new_section_hook elf32_sparc_new_section_hook
3462 #define elf_info_to_howto elf32_sparc_info_to_howto
3463 #define elf_backend_copy_indirect_symbol \
3464 elf32_sparc_copy_indirect_symbol
3465 #define elf_backend_create_dynamic_sections \
3466 elf32_sparc_create_dynamic_sections
3467 #define elf_backend_check_relocs elf32_sparc_check_relocs
3468 #define elf_backend_adjust_dynamic_symbol \
3469 elf32_sparc_adjust_dynamic_symbol
3470 #define elf_backend_omit_section_dynsym elf32_sparc_omit_section_dynsym
3471 #define elf_backend_size_dynamic_sections \
3472 elf32_sparc_size_dynamic_sections
3473 #define elf_backend_relocate_section elf32_sparc_relocate_section
3474 #define elf_backend_finish_dynamic_symbol \
3475 elf32_sparc_finish_dynamic_symbol
3476 #define elf_backend_finish_dynamic_sections \
3477 elf32_sparc_finish_dynamic_sections
3478 #define bfd_elf32_bfd_merge_private_bfd_data \
3479 elf32_sparc_merge_private_bfd_data
3480 #define bfd_elf32_mkobject elf32_sparc_mkobject
3481 #define elf_backend_object_p elf32_sparc_object_p
3482 #define elf_backend_final_write_processing \
3483 elf32_sparc_final_write_processing
3484 #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
3485 #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
3486 #define elf_backend_grok_psinfo elf32_sparc_grok_psinfo
3487 #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
3488 #define elf_backend_plt_sym_val elf32_sparc_plt_sym_val
3489
3490 #define elf_backend_can_gc_sections 1
3491 #define elf_backend_can_refcount 1
3492 #define elf_backend_want_got_plt 0
3493 #define elf_backend_plt_readonly 0
3494 #define elf_backend_want_plt_sym 1
3495 #define elf_backend_got_header_size 4
3496 #define elf_backend_rela_normal 1
3497
3498 #include "elf32-target.h"
This page took 0.106197 seconds and 5 git commands to generate.