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2003-10-08 Dave Brolley <brolley@redhat.com>
[binutils.git] / bfd / elf32-sparc.c
blob50d968e6734cfde2090ef1592c299e68595199c0
1 /* SPARC-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "bfdlink.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "elf/sparc.h"
27 #include "opcode/sparc.h"
28
29 static reloc_howto_type *elf32_sparc_reloc_type_lookup
30 PARAMS ((bfd *, bfd_reloc_code_real_type));
31 static void elf32_sparc_info_to_howto
32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
33 static bfd_boolean elf32_sparc_check_relocs
34 PARAMS ((bfd *, struct bfd_link_info *, asection *,
35 const Elf_Internal_Rela *));
36 static bfd_boolean elf32_sparc_adjust_dynamic_symbol
37 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
38 static bfd_boolean allocate_dynrelocs
39 PARAMS ((struct elf_link_hash_entry *, PTR));
40 static bfd_boolean readonly_dynrelocs
41 PARAMS ((struct elf_link_hash_entry *, PTR));
42 static bfd_boolean elf32_sparc_size_dynamic_sections
43 PARAMS ((bfd *, struct bfd_link_info *));
44 static bfd_boolean elf32_sparc_new_section_hook
45 PARAMS ((bfd *, asection *));
46 static bfd_boolean elf32_sparc_relax_section
47 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
48 static bfd_vma dtpoff_base
49 PARAMS ((struct bfd_link_info *));
50 static bfd_vma tpoff
51 PARAMS ((struct bfd_link_info *, bfd_vma));
52 static bfd_boolean elf32_sparc_relocate_section
53 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
55 static bfd_boolean elf32_sparc_finish_dynamic_symbol
56 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
57 Elf_Internal_Sym *));
58 static bfd_boolean elf32_sparc_finish_dynamic_sections
59 PARAMS ((bfd *, struct bfd_link_info *));
60 static bfd_boolean elf32_sparc_merge_private_bfd_data
61 PARAMS ((bfd *, bfd *));
62 static struct bfd_hash_entry *link_hash_newfunc
63 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
64 static struct bfd_link_hash_table *elf32_sparc_link_hash_table_create
65 PARAMS ((bfd *));
66 static bfd_boolean create_got_section
67 PARAMS ((bfd *, struct bfd_link_info *));
68 static bfd_boolean elf32_sparc_create_dynamic_sections
69 PARAMS ((bfd *, struct bfd_link_info *));
70 static void elf32_sparc_copy_indirect_symbol
71 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
72 struct elf_link_hash_entry *));
73 static int elf32_sparc_tls_transition
74 PARAMS ((struct bfd_link_info *, bfd *, int, int));
75
76 static bfd_boolean elf32_sparc_mkobject
77 PARAMS ((bfd *));
78 static bfd_boolean elf32_sparc_object_p
79 PARAMS ((bfd *));
80 static void elf32_sparc_final_write_processing
81 PARAMS ((bfd *, bfd_boolean));
82 static enum elf_reloc_type_class elf32_sparc_reloc_type_class
83 PARAMS ((const Elf_Internal_Rela *));
84 static asection * elf32_sparc_gc_mark_hook
85 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
86 struct elf_link_hash_entry *, Elf_Internal_Sym *));
87 static bfd_boolean elf32_sparc_gc_sweep_hook
88 PARAMS ((bfd *, struct bfd_link_info *, asection *,
89 const Elf_Internal_Rela *));
90 \f
91 /* The relocation "howto" table. */
92
93 static bfd_reloc_status_type sparc_elf_notsupported_reloc
94 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
95 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
96 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
97 static bfd_reloc_status_type sparc_elf_hix22_reloc
98 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
99 static bfd_reloc_status_type sparc_elf_lox10_reloc
100 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
101
102 reloc_howto_type _bfd_sparc_elf_howto_table[] =
103 {
104 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
105 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
106 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
107 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
108 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
109 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
110 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
111 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
112 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
113 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
114 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
115 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
116 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
117 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
118 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
119 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
120 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
121 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
122 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
123 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
124 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
125 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
126 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
127 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
128 HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
129 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
130 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
131 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
132 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
133 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
134 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
135 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
136 /* These are for sparc64 in a 64 bit environment.
137 Values need to be here because the table is indexed by reloc number. */
138 HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE),
139 HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE),
140 HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE),
141 HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE),
142 HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE),
143 HOWTO(R_SPARC_PC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HH22", FALSE,0,0x00000000,TRUE),
144 HOWTO(R_SPARC_PC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HM10", FALSE,0,0x00000000,TRUE),
145 HOWTO(R_SPARC_PC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_LM22", FALSE,0,0x00000000,TRUE),
146 /* End sparc64 in 64 bit environment values.
147 The following are for sparc64 in a 32 bit environment. */
148 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
149 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
150 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE),
151 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
152 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
153 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
154 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
155 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
156 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
157 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
158 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
159 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
160 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
161 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
162 HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE),
163 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
164 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE),
165 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE),
166 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE),
167 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE),
168 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE),
169 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE),
170 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE),
171 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE),
172 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE),
173 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE),
174 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE),
175 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE),
176 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE),
177 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE),
178 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE),
179 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE),
180 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE),
181 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE),
182 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE),
183 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE),
184 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE),
185 HOWTO(R_SPARC_TLS_DTPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPOFF64",FALSE,0,0x00000000,TRUE),
186 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE),
187 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE)
188 };
189 static reloc_howto_type elf32_sparc_vtinherit_howto =
190 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
191 static reloc_howto_type elf32_sparc_vtentry_howto =
192 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
193 static reloc_howto_type elf32_sparc_rev32_howto =
194 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE);
195
196 struct elf_reloc_map {
197 bfd_reloc_code_real_type bfd_reloc_val;
198 unsigned char elf_reloc_val;
199 };
200
201 static const struct elf_reloc_map sparc_reloc_map[] =
202 {
203 { BFD_RELOC_NONE, R_SPARC_NONE, },
204 { BFD_RELOC_16, R_SPARC_16, },
205 { BFD_RELOC_16_PCREL, R_SPARC_DISP16 },
206 { BFD_RELOC_8, R_SPARC_8 },
207 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
208 { BFD_RELOC_CTOR, R_SPARC_32 },
209 { BFD_RELOC_32, R_SPARC_32 },
210 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
211 { BFD_RELOC_HI22, R_SPARC_HI22 },
212 { BFD_RELOC_LO10, R_SPARC_LO10, },
213 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
214 { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 },
215 { BFD_RELOC_SPARC22, R_SPARC_22 },
216 { BFD_RELOC_SPARC13, R_SPARC_13 },
217 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
218 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
219 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
220 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
221 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
222 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
223 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
224 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
225 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
226 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
227 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
228 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
229 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
230 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
231 { BFD_RELOC_SPARC_10, R_SPARC_10 },
232 { BFD_RELOC_SPARC_11, R_SPARC_11 },
233 { BFD_RELOC_SPARC_64, R_SPARC_64 },
234 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
235 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
236 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
237 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
238 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
239 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
240 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
241 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
242 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
243 { BFD_RELOC_SPARC_7, R_SPARC_7 },
244 { BFD_RELOC_SPARC_5, R_SPARC_5 },
245 { BFD_RELOC_SPARC_6, R_SPARC_6 },
246 { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 },
247 { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 },
248 { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD },
249 { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL },
250 { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 },
251 { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 },
252 { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD },
253 { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL },
254 { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 },
255 { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 },
256 { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD },
257 { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 },
258 { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 },
259 { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD },
260 { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX },
261 { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD },
262 { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 },
263 { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 },
264 { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 },
265 { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 },
266 { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 },
267 { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 },
268 { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 },
269 { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 },
270 { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT },
271 { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY },
272 { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }
273 };
274
275 static reloc_howto_type *
276 elf32_sparc_reloc_type_lookup (abfd, code)
277 bfd *abfd ATTRIBUTE_UNUSED;
278 bfd_reloc_code_real_type code;
279 {
280 unsigned int i;
281
282 switch (code)
283 {
284 case BFD_RELOC_VTABLE_INHERIT:
285 return &elf32_sparc_vtinherit_howto;
286
287 case BFD_RELOC_VTABLE_ENTRY:
288 return &elf32_sparc_vtentry_howto;
289
290 case BFD_RELOC_SPARC_REV32:
291 return &elf32_sparc_rev32_howto;
292
293 default:
294 for (i = 0;
295 i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map);
296 i++)
297 {
298 if (sparc_reloc_map[i].bfd_reloc_val == code)
299 return (_bfd_sparc_elf_howto_table
300 + (int) sparc_reloc_map[i].elf_reloc_val);
301 }
302 }
303 bfd_set_error (bfd_error_bad_value);
304 return NULL;
305 }
306
307 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
308 and elf64-sparc.c has its own copy. */
309
310 static void
311 elf32_sparc_info_to_howto (abfd, cache_ptr, dst)
312 bfd *abfd ATTRIBUTE_UNUSED;
313 arelent *cache_ptr;
314 Elf_Internal_Rela *dst;
315 {
316 switch (ELF32_R_TYPE(dst->r_info))
317 {
318 case R_SPARC_GNU_VTINHERIT:
319 cache_ptr->howto = &elf32_sparc_vtinherit_howto;
320 break;
321
322 case R_SPARC_GNU_VTENTRY:
323 cache_ptr->howto = &elf32_sparc_vtentry_howto;
324 break;
325
326 case R_SPARC_REV32:
327 cache_ptr->howto = &elf32_sparc_rev32_howto;
328 break;
329
330 default:
331 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std);
332 cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
333 }
334 }
335 \f
336 /* For unsupported relocs. */
337
338 static bfd_reloc_status_type
339 sparc_elf_notsupported_reloc (abfd,
340 reloc_entry,
341 symbol,
342 data,
343 input_section,
344 output_bfd,
345 error_message)
346 bfd *abfd ATTRIBUTE_UNUSED;
347 arelent *reloc_entry ATTRIBUTE_UNUSED;
348 asymbol *symbol ATTRIBUTE_UNUSED;
349 PTR data ATTRIBUTE_UNUSED;
350 asection *input_section ATTRIBUTE_UNUSED;
351 bfd *output_bfd ATTRIBUTE_UNUSED;
352 char **error_message ATTRIBUTE_UNUSED;
353 {
354 return bfd_reloc_notsupported;
355 }
356
357 /* Handle the WDISP16 reloc. */
358
359 static bfd_reloc_status_type
360 sparc_elf_wdisp16_reloc (abfd,
361 reloc_entry,
362 symbol,
363 data,
364 input_section,
365 output_bfd,
366 error_message)
367 bfd *abfd;
368 arelent *reloc_entry;
369 asymbol *symbol;
370 PTR data;
371 asection *input_section;
372 bfd *output_bfd;
373 char **error_message ATTRIBUTE_UNUSED;
374 {
375 bfd_vma relocation;
376 bfd_vma x;
377
378 if (output_bfd != (bfd *) NULL
379 && (symbol->flags & BSF_SECTION_SYM) == 0
380 && (! reloc_entry->howto->partial_inplace
381 || reloc_entry->addend == 0))
382 {
383 reloc_entry->address += input_section->output_offset;
384 return bfd_reloc_ok;
385 }
386
387 if (output_bfd != NULL)
388 return bfd_reloc_continue;
389
390 if (reloc_entry->address > input_section->_cooked_size)
391 return bfd_reloc_outofrange;
392
393 relocation = (symbol->value
394 + symbol->section->output_section->vma
395 + symbol->section->output_offset);
396 relocation += reloc_entry->addend;
397 relocation -= (input_section->output_section->vma
398 + input_section->output_offset);
399 relocation -= reloc_entry->address;
400
401 x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
402 x |= ((((relocation >> 2) & 0xc000) << 6)
403 | ((relocation >> 2) & 0x3fff));
404 bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
405
406 if ((bfd_signed_vma) relocation < - 0x40000
407 || (bfd_signed_vma) relocation > 0x3ffff)
408 return bfd_reloc_overflow;
409 else
410 return bfd_reloc_ok;
411 }
412
413 /* Handle the HIX22 reloc. */
414
415 static bfd_reloc_status_type
416 sparc_elf_hix22_reloc (abfd,
417 reloc_entry,
418 symbol,
419 data,
420 input_section,
421 output_bfd,
422 error_message)
423 bfd *abfd;
424 arelent *reloc_entry;
425 asymbol *symbol;
426 PTR data;
427 asection *input_section;
428 bfd *output_bfd;
429 char **error_message ATTRIBUTE_UNUSED;
430 {
431 bfd_vma relocation;
432 bfd_vma insn;
433
434 if (output_bfd != (bfd *) NULL
435 && (symbol->flags & BSF_SECTION_SYM) == 0)
436 {
437 reloc_entry->address += input_section->output_offset;
438 return bfd_reloc_ok;
439 }
440
441 if (output_bfd != NULL)
442 return bfd_reloc_continue;
443
444 if (reloc_entry->address > input_section->_cooked_size)
445 return bfd_reloc_outofrange;
446
447 relocation = (symbol->value
448 + symbol->section->output_section->vma
449 + symbol->section->output_offset);
450 relocation += reloc_entry->addend;
451 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
452
453 insn = (insn &~ (bfd_vma) 0x3fffff) | (((~relocation) >> 10) & 0x3fffff);
454 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
455
456 return bfd_reloc_ok;
457 }
458
459 /* Handle the LOX10 reloc. */
460
461 static bfd_reloc_status_type
462 sparc_elf_lox10_reloc (abfd,
463 reloc_entry,
464 symbol,
465 data,
466 input_section,
467 output_bfd,
468 error_message)
469 bfd *abfd;
470 arelent *reloc_entry;
471 asymbol *symbol;
472 PTR data;
473 asection *input_section;
474 bfd *output_bfd;
475 char **error_message ATTRIBUTE_UNUSED;
476 {
477 bfd_vma relocation;
478 bfd_vma insn;
479
480 if (output_bfd != (bfd *) NULL
481 && (symbol->flags & BSF_SECTION_SYM) == 0)
482 {
483 reloc_entry->address += input_section->output_offset;
484 return bfd_reloc_ok;
485 }
486
487 if (output_bfd != NULL)
488 return bfd_reloc_continue;
489
490 if (reloc_entry->address > input_section->_cooked_size)
491 return bfd_reloc_outofrange;
492
493 relocation = (symbol->value
494 + symbol->section->output_section->vma
495 + symbol->section->output_offset);
496 relocation += reloc_entry->addend;
497 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
498
499 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
500 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
501
502 return bfd_reloc_ok;
503 }
504 \f
505 /* Functions for the SPARC ELF linker. */
506
507 /* The name of the dynamic interpreter. This is put in the .interp
508 section. */
509
510 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
511
512 /* The nop opcode we use. */
513
514 #define SPARC_NOP 0x01000000
515
516 /* The size in bytes of an entry in the procedure linkage table. */
517
518 #define PLT_ENTRY_SIZE 12
519
520 /* The first four entries in a procedure linkage table are reserved,
521 and the initial contents are unimportant (we zero them out).
522 Subsequent entries look like this. See the SVR4 ABI SPARC
523 supplement to see how this works. */
524
525 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
526 #define PLT_ENTRY_WORD0 0x03000000
527 /* b,a .plt0. We fill in the offset later. */
528 #define PLT_ENTRY_WORD1 0x30800000
529 /* nop. */
530 #define PLT_ENTRY_WORD2 SPARC_NOP
531
532 /* The SPARC linker needs to keep track of the number of relocs that it
533 decides to copy as dynamic relocs in check_relocs for each symbol.
534 This is so that it can later discard them if they are found to be
535 unnecessary. We store the information in a field extending the
536 regular ELF linker hash table. */
537
538 struct elf32_sparc_dyn_relocs
539 {
540 struct elf32_sparc_dyn_relocs *next;
541
542 /* The input section of the reloc. */
543 asection *sec;
544
545 /* Total number of relocs copied for the input section. */
546 bfd_size_type count;
547
548 /* Number of pc-relative relocs copied for the input section. */
549 bfd_size_type pc_count;
550 };
551
552 /* SPARC ELF linker hash entry. */
553
554 struct elf32_sparc_link_hash_entry
555 {
556 struct elf_link_hash_entry elf;
557
558 /* Track dynamic relocs copied for this symbol. */
559 struct elf32_sparc_dyn_relocs *dyn_relocs;
560
561 #define GOT_UNKNOWN 0
562 #define GOT_NORMAL 1
563 #define GOT_TLS_GD 2
564 #define GOT_TLS_IE 3
565 unsigned char tls_type;
566 };
567
568 #define elf32_sparc_hash_entry(ent) ((struct elf32_sparc_link_hash_entry *)(ent))
569
570 struct elf32_sparc_obj_tdata
571 {
572 struct elf_obj_tdata root;
573
574 /* tls_type for each local got entry. */
575 char *local_got_tls_type;
576
577 /* TRUE if TLS GD relocs has been seen for this object. */
578 bfd_boolean has_tlsgd;
579 };
580
581 #define elf32_sparc_tdata(abfd) \
582 ((struct elf32_sparc_obj_tdata *) (abfd)->tdata.any)
583
584 #define elf32_sparc_local_got_tls_type(abfd) \
585 (elf32_sparc_tdata (abfd)->local_got_tls_type)
586
587 static bfd_boolean
588 elf32_sparc_mkobject (abfd)
589 bfd *abfd;
590 {
591 bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
592 abfd->tdata.any = bfd_zalloc (abfd, amt);
593 if (abfd->tdata.any == NULL)
594 return FALSE;
595 return TRUE;
596 }
597
598 /* SPARC ELF linker hash table. */
599
600 struct elf32_sparc_link_hash_table
601 {
602 struct elf_link_hash_table elf;
603
604 /* Short-cuts to get to dynamic linker sections. */
605 asection *sgot;
606 asection *srelgot;
607 asection *splt;
608 asection *srelplt;
609 asection *sdynbss;
610 asection *srelbss;
611
612 union {
613 bfd_signed_vma refcount;
614 bfd_vma offset;
615 } tls_ldm_got;
616
617 /* Small local sym to section mapping cache. */
618 struct sym_sec_cache sym_sec;
619 };
620
621 /* Get the SPARC ELF linker hash table from a link_info structure. */
622
623 #define elf32_sparc_hash_table(p) \
624 ((struct elf32_sparc_link_hash_table *) ((p)->hash))
625
626 /* Create an entry in an i386 ELF linker hash table. */
627
628 static struct bfd_hash_entry *
629 link_hash_newfunc (entry, table, string)
630 struct bfd_hash_entry *entry;
631 struct bfd_hash_table *table;
632 const char *string;
633 {
634 /* Allocate the structure if it has not already been allocated by a
635 subclass. */
636 if (entry == NULL)
637 {
638 entry = bfd_hash_allocate (table,
639 sizeof (struct elf32_sparc_link_hash_entry));
640 if (entry == NULL)
641 return entry;
642 }
643
644 /* Call the allocation method of the superclass. */
645 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
646 if (entry != NULL)
647 {
648 struct elf32_sparc_link_hash_entry *eh;
649
650 eh = (struct elf32_sparc_link_hash_entry *) entry;
651 eh->dyn_relocs = NULL;
652 eh->tls_type = GOT_UNKNOWN;
653 }
654
655 return entry;
656 }
657
658 /* Create a SPARC ELF linker hash table. */
659
660 static struct bfd_link_hash_table *
661 elf32_sparc_link_hash_table_create (abfd)
662 bfd *abfd;
663 {
664 struct elf32_sparc_link_hash_table *ret;
665 bfd_size_type amt = sizeof (struct elf32_sparc_link_hash_table);
666
667 ret = (struct elf32_sparc_link_hash_table *) bfd_malloc (amt);
668 if (ret == NULL)
669 return NULL;
670
671 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
672 {
673 free (ret);
674 return NULL;
675 }
676
677 ret->sgot = NULL;
678 ret->srelgot = NULL;
679 ret->splt = NULL;
680 ret->srelplt = NULL;
681 ret->sdynbss = NULL;
682 ret->srelbss = NULL;
683 ret->tls_ldm_got.refcount = 0;
684 ret->sym_sec.abfd = NULL;
685
686 return &ret->elf.root;
687 }
688
689 /* Create .got and .rela.got sections in DYNOBJ, and set up
690 shortcuts to them in our hash table. */
691
692 static bfd_boolean
693 create_got_section (dynobj, info)
694 bfd *dynobj;
695 struct bfd_link_info *info;
696 {
697 struct elf32_sparc_link_hash_table *htab;
698
699 if (! _bfd_elf_create_got_section (dynobj, info))
700 return FALSE;
701
702 htab = elf32_sparc_hash_table (info);
703 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
704 if (!htab->sgot)
705 abort ();
706
707 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
708 if (htab->srelgot == NULL
709 || ! bfd_set_section_flags (dynobj, htab->srelgot,
710 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
711 | SEC_IN_MEMORY | SEC_LINKER_CREATED
712 | SEC_READONLY))
713 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
714 return FALSE;
715 return TRUE;
716 }
717
718 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
719 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
720 hash table. */
721
722 static bfd_boolean
723 elf32_sparc_create_dynamic_sections (dynobj, info)
724 bfd *dynobj;
725 struct bfd_link_info *info;
726 {
727 struct elf32_sparc_link_hash_table *htab;
728
729 htab = elf32_sparc_hash_table (info);
730 if (!htab->sgot && !create_got_section (dynobj, info))
731 return FALSE;
732
733 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
734 return FALSE;
735
736 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
737 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
738 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
739 if (!info->shared)
740 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
741
742 if (!htab->splt || !htab->srelplt || !htab->sdynbss
743 || (!info->shared && !htab->srelbss))
744 abort ();
745
746 return TRUE;
747 }
748
749 /* Copy the extra info we tack onto an elf_link_hash_entry. */
750
751 static void
752 elf32_sparc_copy_indirect_symbol (bed, dir, ind)
753 const struct elf_backend_data *bed;
754 struct elf_link_hash_entry *dir, *ind;
755 {
756 struct elf32_sparc_link_hash_entry *edir, *eind;
757
758 edir = (struct elf32_sparc_link_hash_entry *) dir;
759 eind = (struct elf32_sparc_link_hash_entry *) ind;
760
761 if (eind->dyn_relocs != NULL)
762 {
763 if (edir->dyn_relocs != NULL)
764 {
765 struct elf32_sparc_dyn_relocs **pp;
766 struct elf32_sparc_dyn_relocs *p;
767
768 if (ind->root.type == bfd_link_hash_indirect)
769 abort ();
770
771 /* Add reloc counts against the weak sym to the strong sym
772 list. Merge any entries against the same section. */
773 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
774 {
775 struct elf32_sparc_dyn_relocs *q;
776
777 for (q = edir->dyn_relocs; q != NULL; q = q->next)
778 if (q->sec == p->sec)
779 {
780 q->pc_count += p->pc_count;
781 q->count += p->count;
782 *pp = p->next;
783 break;
784 }
785 if (q == NULL)
786 pp = &p->next;
787 }
788 *pp = edir->dyn_relocs;
789 }
790
791 edir->dyn_relocs = eind->dyn_relocs;
792 eind->dyn_relocs = NULL;
793 }
794
795 if (ind->root.type == bfd_link_hash_indirect
796 && dir->got.refcount <= 0)
797 {
798 edir->tls_type = eind->tls_type;
799 eind->tls_type = GOT_UNKNOWN;
800 }
801 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
802 }
803
804 static int
805 elf32_sparc_tls_transition (info, abfd, r_type, is_local)
806 struct bfd_link_info *info;
807 bfd *abfd;
808 int r_type;
809 int is_local;
810 {
811 if (r_type == R_SPARC_TLS_GD_HI22
812 && ! elf32_sparc_tdata (abfd)->has_tlsgd)
813 r_type = R_SPARC_REV32;
814
815 if (info->shared)
816 return r_type;
817
818 switch (r_type)
819 {
820 case R_SPARC_TLS_GD_HI22:
821 if (is_local)
822 return R_SPARC_TLS_LE_HIX22;
823 return R_SPARC_TLS_IE_HI22;
824 case R_SPARC_TLS_GD_LO10:
825 if (is_local)
826 return R_SPARC_TLS_LE_LOX10;
827 return R_SPARC_TLS_IE_LO10;
828 case R_SPARC_TLS_IE_HI22:
829 if (is_local)
830 return R_SPARC_TLS_LE_HIX22;
831 return r_type;
832 case R_SPARC_TLS_IE_LO10:
833 if (is_local)
834 return R_SPARC_TLS_LE_LOX10;
835 return r_type;
836 case R_SPARC_TLS_LDM_HI22:
837 return R_SPARC_TLS_LE_HIX22;
838 case R_SPARC_TLS_LDM_LO10:
839 return R_SPARC_TLS_LE_LOX10;
840 }
841
842 return r_type;
843 }
844
845 /* Look through the relocs for a section during the first phase, and
846 allocate space in the global offset table or procedure linkage
847 table. */
848
849 static bfd_boolean
850 elf32_sparc_check_relocs (abfd, info, sec, relocs)
851 bfd *abfd;
852 struct bfd_link_info *info;
853 asection *sec;
854 const Elf_Internal_Rela *relocs;
855 {
856 struct elf32_sparc_link_hash_table *htab;
857 Elf_Internal_Shdr *symtab_hdr;
858 struct elf_link_hash_entry **sym_hashes;
859 bfd_vma *local_got_offsets;
860 const Elf_Internal_Rela *rel;
861 const Elf_Internal_Rela *rel_end;
862 asection *sreloc;
863 bfd_boolean checked_tlsgd = FALSE;
864
865 if (info->relocatable)
866 return TRUE;
867
868 htab = elf32_sparc_hash_table (info);
869 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
870 sym_hashes = elf_sym_hashes (abfd);
871 local_got_offsets = elf_local_got_offsets (abfd);
872
873 sreloc = NULL;
874
875 rel_end = relocs + sec->reloc_count;
876 for (rel = relocs; rel < rel_end; rel++)
877 {
878 unsigned int r_type;
879 unsigned long r_symndx;
880 struct elf_link_hash_entry *h;
881
882 r_symndx = ELF32_R_SYM (rel->r_info);
883 r_type = ELF32_R_TYPE (rel->r_info);
884
885 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
886 {
887 (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
888 bfd_archive_filename (abfd),
889 r_symndx);
890 return FALSE;
891 }
892
893 if (r_symndx < symtab_hdr->sh_info)
894 h = NULL;
895 else
896 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
897
898 /* Compatibility with old R_SPARC_REV32 reloc conflicting
899 with R_SPARC_TLS_GD_HI22. */
900 if (! checked_tlsgd)
901 switch (r_type)
902 {
903 case R_SPARC_TLS_GD_HI22:
904 {
905 const Elf_Internal_Rela *relt;
906
907 for (relt = rel + 1; relt < rel_end; relt++)
908 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
909 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
910 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
911 break;
912 checked_tlsgd = TRUE;
913 elf32_sparc_tdata (abfd)->has_tlsgd = relt < rel_end;
914 }
915 break;
916 case R_SPARC_TLS_GD_LO10:
917 case R_SPARC_TLS_GD_ADD:
918 case R_SPARC_TLS_GD_CALL:
919 checked_tlsgd = TRUE;
920 elf32_sparc_tdata (abfd)->has_tlsgd = TRUE;
921 break;
922 }
923
924 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h == NULL);
925 switch (r_type)
926 {
927 case R_SPARC_TLS_LDM_HI22:
928 case R_SPARC_TLS_LDM_LO10:
929 htab->tls_ldm_got.refcount += 1;
930 break;
931
932 case R_SPARC_TLS_LE_HIX22:
933 case R_SPARC_TLS_LE_LOX10:
934 if (info->shared)
935 goto r_sparc_plt32;
936 break;
937
938 case R_SPARC_TLS_IE_HI22:
939 case R_SPARC_TLS_IE_LO10:
940 if (info->shared)
941 info->flags |= DF_STATIC_TLS;
942 /* Fall through */
943
944 case R_SPARC_GOT10:
945 case R_SPARC_GOT13:
946 case R_SPARC_GOT22:
947 case R_SPARC_TLS_GD_HI22:
948 case R_SPARC_TLS_GD_LO10:
949 /* This symbol requires a global offset table entry. */
950 {
951 int tls_type, old_tls_type;
952
953 switch (r_type)
954 {
955 default:
956 case R_SPARC_GOT10:
957 case R_SPARC_GOT13:
958 case R_SPARC_GOT22:
959 tls_type = GOT_NORMAL;
960 break;
961 case R_SPARC_TLS_GD_HI22:
962 case R_SPARC_TLS_GD_LO10:
963 tls_type = GOT_TLS_GD;
964 break;
965 case R_SPARC_TLS_IE_HI22:
966 case R_SPARC_TLS_IE_LO10:
967 tls_type = GOT_TLS_IE;
968 break;
969 }
970
971 if (h != NULL)
972 {
973 h->got.refcount += 1;
974 old_tls_type = elf32_sparc_hash_entry(h)->tls_type;
975 }
976 else
977 {
978 bfd_signed_vma *local_got_refcounts;
979
980 /* This is a global offset table entry for a local symbol. */
981 local_got_refcounts = elf_local_got_refcounts (abfd);
982 if (local_got_refcounts == NULL)
983 {
984 bfd_size_type size;
985
986 size = symtab_hdr->sh_info;
987 size *= (sizeof (bfd_signed_vma) + sizeof(char));
988 local_got_refcounts = ((bfd_signed_vma *)
989 bfd_zalloc (abfd, size));
990 if (local_got_refcounts == NULL)
991 return FALSE;
992 elf_local_got_refcounts (abfd) = local_got_refcounts;
993 elf32_sparc_local_got_tls_type (abfd)
994 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
995 }
996 local_got_refcounts[r_symndx] += 1;
997 old_tls_type = elf32_sparc_local_got_tls_type (abfd) [r_symndx];
998 }
999
1000 /* If a TLS symbol is accessed using IE at least once,
1001 there is no point to use dynamic model for it. */
1002 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1003 && (old_tls_type != GOT_TLS_GD
1004 || tls_type != GOT_TLS_IE))
1005 {
1006 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1007 tls_type = old_tls_type;
1008 else
1009 {
1010 (*_bfd_error_handler)
1011 (_("%s: `%s' accessed both as normal and thread local symbol"),
1012 bfd_archive_filename (abfd),
1013 h ? h->root.root.string : "<local>");
1014 return FALSE;
1015 }
1016 }
1017
1018 if (old_tls_type != tls_type)
1019 {
1020 if (h != NULL)
1021 elf32_sparc_hash_entry (h)->tls_type = tls_type;
1022 else
1023 elf32_sparc_local_got_tls_type (abfd) [r_symndx] = tls_type;
1024 }
1025 }
1026
1027 if (htab->sgot == NULL)
1028 {
1029 if (htab->elf.dynobj == NULL)
1030 htab->elf.dynobj = abfd;
1031 if (!create_got_section (htab->elf.dynobj, info))
1032 return FALSE;
1033 }
1034 break;
1035
1036 case R_SPARC_TLS_GD_CALL:
1037 case R_SPARC_TLS_LDM_CALL:
1038 if (info->shared)
1039 {
1040 /* These are basically R_SPARC_TLS_WPLT30 relocs against
1041 __tls_get_addr. */
1042 struct bfd_link_hash_entry *bh = NULL;
1043 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1044 "__tls_get_addr", 0,
1045 bfd_und_section_ptr, 0,
1046 NULL, FALSE, FALSE,
1047 &bh))
1048 return FALSE;
1049 h = (struct elf_link_hash_entry *) bh;
1050 }
1051 else
1052 break;
1053 /* Fall through */
1054
1055 case R_SPARC_PLT32:
1056 case R_SPARC_WPLT30:
1057 /* This symbol requires a procedure linkage table entry. We
1058 actually build the entry in adjust_dynamic_symbol,
1059 because this might be a case of linking PIC code without
1060 linking in any dynamic objects, in which case we don't
1061 need to generate a procedure linkage table after all. */
1062
1063 if (h == NULL)
1064 {
1065 /* The Solaris native assembler will generate a WPLT30
1066 reloc for a local symbol if you assemble a call from
1067 one section to another when using -K pic. We treat
1068 it as WDISP30. */
1069 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1070 goto r_sparc_plt32;
1071 break;
1072 }
1073
1074 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1075
1076 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
1077 goto r_sparc_plt32;
1078 h->plt.refcount += 1;
1079 break;
1080
1081 case R_SPARC_PC10:
1082 case R_SPARC_PC22:
1083 if (h != NULL)
1084 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1085
1086 if (h != NULL
1087 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1088 break;
1089 /* Fall through. */
1090
1091 case R_SPARC_DISP8:
1092 case R_SPARC_DISP16:
1093 case R_SPARC_DISP32:
1094 case R_SPARC_WDISP30:
1095 case R_SPARC_WDISP22:
1096 case R_SPARC_WDISP19:
1097 case R_SPARC_WDISP16:
1098 case R_SPARC_8:
1099 case R_SPARC_16:
1100 case R_SPARC_32:
1101 case R_SPARC_HI22:
1102 case R_SPARC_22:
1103 case R_SPARC_13:
1104 case R_SPARC_LO10:
1105 case R_SPARC_UA16:
1106 case R_SPARC_UA32:
1107 if (h != NULL)
1108 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1109
1110 r_sparc_plt32:
1111 if (h != NULL && !info->shared)
1112 {
1113 /* We may need a .plt entry if the function this reloc
1114 refers to is in a shared lib. */
1115 h->plt.refcount += 1;
1116 }
1117
1118 /* If we are creating a shared library, and this is a reloc
1119 against a global symbol, or a non PC relative reloc
1120 against a local symbol, then we need to copy the reloc
1121 into the shared library. However, if we are linking with
1122 -Bsymbolic, we do not need to copy a reloc against a
1123 global symbol which is defined in an object we are
1124 including in the link (i.e., DEF_REGULAR is set). At
1125 this point we have not seen all the input files, so it is
1126 possible that DEF_REGULAR is not set now but will be set
1127 later (it is never cleared). In case of a weak definition,
1128 DEF_REGULAR may be cleared later by a strong definition in
1129 a shared library. We account for that possibility below by
1130 storing information in the relocs_copied field of the hash
1131 table entry. A similar situation occurs when creating
1132 shared libraries and symbol visibility changes render the
1133 symbol local.
1134
1135 If on the other hand, we are creating an executable, we
1136 may need to keep relocations for symbols satisfied by a
1137 dynamic library if we manage to avoid copy relocs for the
1138 symbol. */
1139 if ((info->shared
1140 && (sec->flags & SEC_ALLOC) != 0
1141 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1142 || (h != NULL
1143 && (! info->symbolic
1144 || h->root.type == bfd_link_hash_defweak
1145 || (h->elf_link_hash_flags
1146 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1147 || (!info->shared
1148 && (sec->flags & SEC_ALLOC) != 0
1149 && h != NULL
1150 && (h->root.type == bfd_link_hash_defweak
1151 || (h->elf_link_hash_flags
1152 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1153 {
1154 struct elf32_sparc_dyn_relocs *p;
1155 struct elf32_sparc_dyn_relocs **head;
1156
1157 /* When creating a shared object, we must copy these
1158 relocs into the output file. We create a reloc
1159 section in dynobj and make room for the reloc. */
1160 if (sreloc == NULL)
1161 {
1162 const char *name;
1163 bfd *dynobj;
1164
1165 name = (bfd_elf_string_from_elf_section
1166 (abfd,
1167 elf_elfheader (abfd)->e_shstrndx,
1168 elf_section_data (sec)->rel_hdr.sh_name));
1169 if (name == NULL)
1170 return FALSE;
1171
1172 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1173 && strcmp (bfd_get_section_name (abfd, sec),
1174 name + 5) == 0);
1175
1176 if (htab->elf.dynobj == NULL)
1177 htab->elf.dynobj = abfd;
1178 dynobj = htab->elf.dynobj;
1179
1180 sreloc = bfd_get_section_by_name (dynobj, name);
1181 if (sreloc == NULL)
1182 {
1183 flagword flags;
1184
1185 sreloc = bfd_make_section (dynobj, name);
1186 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1187 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1188 if ((sec->flags & SEC_ALLOC) != 0)
1189 flags |= SEC_ALLOC | SEC_LOAD;
1190 if (sreloc == NULL
1191 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1192 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1193 return FALSE;
1194 }
1195 elf_section_data (sec)->sreloc = sreloc;
1196 }
1197
1198 /* If this is a global symbol, we count the number of
1199 relocations we need for this symbol. */
1200 if (h != NULL)
1201 head = &((struct elf32_sparc_link_hash_entry *) h)->dyn_relocs;
1202 else
1203 {
1204 /* Track dynamic relocs needed for local syms too.
1205 We really need local syms available to do this
1206 easily. Oh well. */
1207
1208 asection *s;
1209 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1210 sec, r_symndx);
1211 if (s == NULL)
1212 return FALSE;
1213
1214 head = ((struct elf32_sparc_dyn_relocs **)
1215 &elf_section_data (s)->local_dynrel);
1216 }
1217
1218 p = *head;
1219 if (p == NULL || p->sec != sec)
1220 {
1221 bfd_size_type amt = sizeof *p;
1222 p = ((struct elf32_sparc_dyn_relocs *)
1223 bfd_alloc (htab->elf.dynobj, amt));
1224 if (p == NULL)
1225 return FALSE;
1226 p->next = *head;
1227 *head = p;
1228 p->sec = sec;
1229 p->count = 0;
1230 p->pc_count = 0;
1231 }
1232
1233 p->count += 1;
1234 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1235 p->pc_count += 1;
1236 }
1237
1238 break;
1239
1240 case R_SPARC_GNU_VTINHERIT:
1241 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1242 return FALSE;
1243 break;
1244
1245 case R_SPARC_GNU_VTENTRY:
1246 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1247 return FALSE;
1248 break;
1249
1250 default:
1251 break;
1252 }
1253 }
1254
1255 return TRUE;
1256 }
1257
1258 static asection *
1259 elf32_sparc_gc_mark_hook (sec, info, rel, h, sym)
1260 asection *sec;
1261 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1262 Elf_Internal_Rela *rel;
1263 struct elf_link_hash_entry *h;
1264 Elf_Internal_Sym *sym;
1265 {
1266 if (h != NULL)
1267 {
1268 switch (ELF32_R_TYPE (rel->r_info))
1269 {
1270 case R_SPARC_GNU_VTINHERIT:
1271 case R_SPARC_GNU_VTENTRY:
1272 break;
1273
1274 default:
1275 switch (h->root.type)
1276 {
1277 case bfd_link_hash_defined:
1278 case bfd_link_hash_defweak:
1279 return h->root.u.def.section;
1280
1281 case bfd_link_hash_common:
1282 return h->root.u.c.p->section;
1283
1284 default:
1285 break;
1286 }
1287 }
1288 }
1289 else
1290 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1291
1292 return NULL;
1293 }
1294
1295 /* Update the got entry reference counts for the section being removed. */
1296 static bfd_boolean
1297 elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs)
1298 bfd *abfd;
1299 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1300 asection *sec;
1301 const Elf_Internal_Rela *relocs;
1302 {
1303 Elf_Internal_Shdr *symtab_hdr;
1304 struct elf_link_hash_entry **sym_hashes;
1305 bfd_signed_vma *local_got_refcounts;
1306 const Elf_Internal_Rela *rel, *relend;
1307
1308 elf_section_data (sec)->local_dynrel = NULL;
1309
1310 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1311 sym_hashes = elf_sym_hashes (abfd);
1312 local_got_refcounts = elf_local_got_refcounts (abfd);
1313
1314 relend = relocs + sec->reloc_count;
1315 for (rel = relocs; rel < relend; rel++)
1316 {
1317 unsigned long r_symndx;
1318 unsigned int r_type;
1319 struct elf_link_hash_entry *h = NULL;
1320
1321 r_symndx = ELF32_R_SYM (rel->r_info);
1322 if (r_symndx >= symtab_hdr->sh_info)
1323 {
1324 struct elf32_sparc_link_hash_entry *eh;
1325 struct elf32_sparc_dyn_relocs **pp;
1326 struct elf32_sparc_dyn_relocs *p;
1327
1328 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1329 eh = (struct elf32_sparc_link_hash_entry *) h;
1330 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1331 if (p->sec == sec)
1332 {
1333 /* Everything must go for SEC. */
1334 *pp = p->next;
1335 break;
1336 }
1337 }
1338
1339 r_type = ELF32_R_TYPE (rel->r_info);
1340 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h != NULL);
1341 switch (r_type)
1342 {
1343 case R_SPARC_TLS_LDM_HI22:
1344 case R_SPARC_TLS_LDM_LO10:
1345 if (elf32_sparc_hash_table (info)->tls_ldm_got.refcount > 0)
1346 elf32_sparc_hash_table (info)->tls_ldm_got.refcount -= 1;
1347 break;
1348
1349 case R_SPARC_TLS_GD_HI22:
1350 case R_SPARC_TLS_GD_LO10:
1351 case R_SPARC_TLS_IE_HI22:
1352 case R_SPARC_TLS_IE_LO10:
1353 case R_SPARC_GOT10:
1354 case R_SPARC_GOT13:
1355 case R_SPARC_GOT22:
1356 if (h != NULL)
1357 {
1358 if (h->got.refcount > 0)
1359 h->got.refcount--;
1360 }
1361 else
1362 {
1363 if (local_got_refcounts[r_symndx] > 0)
1364 local_got_refcounts[r_symndx]--;
1365 }
1366 break;
1367
1368 case R_SPARC_PC10:
1369 case R_SPARC_PC22:
1370 if (h != NULL
1371 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1372 break;
1373 /* Fall through. */
1374
1375 case R_SPARC_DISP8:
1376 case R_SPARC_DISP16:
1377 case R_SPARC_DISP32:
1378 case R_SPARC_WDISP30:
1379 case R_SPARC_WDISP22:
1380 case R_SPARC_WDISP19:
1381 case R_SPARC_WDISP16:
1382 case R_SPARC_8:
1383 case R_SPARC_16:
1384 case R_SPARC_32:
1385 case R_SPARC_HI22:
1386 case R_SPARC_22:
1387 case R_SPARC_13:
1388 case R_SPARC_LO10:
1389 case R_SPARC_UA16:
1390 case R_SPARC_UA32:
1391 case R_SPARC_PLT32:
1392 if (info->shared)
1393 break;
1394 /* Fall through. */
1395
1396 case R_SPARC_WPLT30:
1397 if (h != NULL)
1398 {
1399 if (h->plt.refcount > 0)
1400 h->plt.refcount--;
1401 }
1402 break;
1403
1404 default:
1405 break;
1406 }
1407 }
1408
1409 return TRUE;
1410 }
1411
1412 /* Adjust a symbol defined by a dynamic object and referenced by a
1413 regular object. The current definition is in some section of the
1414 dynamic object, but we're not including those sections. We have to
1415 change the definition to something the rest of the link can
1416 understand. */
1417
1418 static bfd_boolean
1419 elf32_sparc_adjust_dynamic_symbol (info, h)
1420 struct bfd_link_info *info;
1421 struct elf_link_hash_entry *h;
1422 {
1423 struct elf32_sparc_link_hash_table *htab;
1424 struct elf32_sparc_link_hash_entry * eh;
1425 struct elf32_sparc_dyn_relocs *p;
1426 asection *s;
1427 unsigned int power_of_two;
1428
1429 htab = elf32_sparc_hash_table (info);
1430
1431 /* Make sure we know what is going on here. */
1432 BFD_ASSERT (htab->elf.dynobj != NULL
1433 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1434 || h->weakdef != NULL
1435 || ((h->elf_link_hash_flags
1436 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1437 && (h->elf_link_hash_flags
1438 & ELF_LINK_HASH_REF_REGULAR) != 0
1439 && (h->elf_link_hash_flags
1440 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1441
1442 /* If this is a function, put it in the procedure linkage table. We
1443 will fill in the contents of the procedure linkage table later
1444 (although we could actually do it here). The STT_NOTYPE
1445 condition is a hack specifically for the Oracle libraries
1446 delivered for Solaris; for some inexplicable reason, they define
1447 some of their functions as STT_NOTYPE when they really should be
1448 STT_FUNC. */
1449 if (h->type == STT_FUNC
1450 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
1451 || (h->type == STT_NOTYPE
1452 && (h->root.type == bfd_link_hash_defined
1453 || h->root.type == bfd_link_hash_defweak)
1454 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1455 {
1456 if (h->plt.refcount <= 0
1457 || (! info->shared
1458 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1459 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
1460 && h->root.type != bfd_link_hash_undefweak
1461 && h->root.type != bfd_link_hash_undefined))
1462 {
1463 /* This case can occur if we saw a WPLT30 reloc in an input
1464 file, but the symbol was never referred to by a dynamic
1465 object, or if all references were garbage collected. In
1466 such a case, we don't actually need to build a procedure
1467 linkage table, and we can just do a WDISP30 reloc instead. */
1468 h->plt.offset = (bfd_vma) -1;
1469 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1470 }
1471
1472 return TRUE;
1473 }
1474 else
1475 h->plt.offset = (bfd_vma) -1;
1476
1477 /* If this is a weak symbol, and there is a real definition, the
1478 processor independent code will have arranged for us to see the
1479 real definition first, and we can just use the same value. */
1480 if (h->weakdef != NULL)
1481 {
1482 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1483 || h->weakdef->root.type == bfd_link_hash_defweak);
1484 h->root.u.def.section = h->weakdef->root.u.def.section;
1485 h->root.u.def.value = h->weakdef->root.u.def.value;
1486 return TRUE;
1487 }
1488
1489 /* This is a reference to a symbol defined by a dynamic object which
1490 is not a function. */
1491
1492 /* If we are creating a shared library, we must presume that the
1493 only references to the symbol are via the global offset table.
1494 For such cases we need not do anything here; the relocations will
1495 be handled correctly by relocate_section. */
1496 if (info->shared)
1497 return TRUE;
1498
1499 /* If there are no references to this symbol that do not use the
1500 GOT, we don't need to generate a copy reloc. */
1501 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1502 return TRUE;
1503
1504 eh = (struct elf32_sparc_link_hash_entry *) h;
1505 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1506 {
1507 s = p->sec->output_section;
1508 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1509 break;
1510 }
1511
1512 /* If we didn't find any dynamic relocs in read-only sections, then
1513 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1514 if (p == NULL)
1515 {
1516 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1517 return TRUE;
1518 }
1519
1520 /* We must allocate the symbol in our .dynbss section, which will
1521 become part of the .bss section of the executable. There will be
1522 an entry for this symbol in the .dynsym section. The dynamic
1523 object will contain position independent code, so all references
1524 from the dynamic object to this symbol will go through the global
1525 offset table. The dynamic linker will use the .dynsym entry to
1526 determine the address it must put in the global offset table, so
1527 both the dynamic object and the regular object will refer to the
1528 same memory location for the variable. */
1529
1530 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1531 to copy the initial value out of the dynamic object and into the
1532 runtime process image. We need to remember the offset into the
1533 .rel.bss section we are going to use. */
1534 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1535 {
1536 htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
1537 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1538 }
1539
1540 /* We need to figure out the alignment required for this symbol. I
1541 have no idea how ELF linkers handle this. */
1542 power_of_two = bfd_log2 (h->size);
1543 if (power_of_two > 3)
1544 power_of_two = 3;
1545
1546 /* Apply the required alignment. */
1547 s = htab->sdynbss;
1548 s->_raw_size = BFD_ALIGN (s->_raw_size,
1549 (bfd_size_type) (1 << power_of_two));
1550 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1551 {
1552 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1553 return FALSE;
1554 }
1555
1556 /* Define the symbol as being at this point in the section. */
1557 h->root.u.def.section = s;
1558 h->root.u.def.value = s->_raw_size;
1559
1560 /* Increment the section size to make room for the symbol. */
1561 s->_raw_size += h->size;
1562
1563 return TRUE;
1564 }
1565
1566 /* This is the condition under which finish_dynamic_symbol will be called
1567 from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol
1568 routine, we'll need to do something about initializing any .plt and .got
1569 entries in relocate_section. */
1570 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1571 ((DYN) \
1572 && ((INFO)->shared \
1573 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1574 && ((H)->dynindx != -1 \
1575 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1576
1577 /* Allocate space in .plt, .got and associated reloc sections for
1578 dynamic relocs. */
1579
1580 static bfd_boolean
1581 allocate_dynrelocs (h, inf)
1582 struct elf_link_hash_entry *h;
1583 PTR inf;
1584 {
1585 struct bfd_link_info *info;
1586 struct elf32_sparc_link_hash_table *htab;
1587 struct elf32_sparc_link_hash_entry *eh;
1588 struct elf32_sparc_dyn_relocs *p;
1589
1590 if (h->root.type == bfd_link_hash_indirect)
1591 return TRUE;
1592
1593 if (h->root.type == bfd_link_hash_warning)
1594 /* When warning symbols are created, they **replace** the "real"
1595 entry in the hash table, thus we never get to see the real
1596 symbol in a hash traversal. So look at it now. */
1597 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1598
1599 info = (struct bfd_link_info *) inf;
1600 htab = elf32_sparc_hash_table (info);
1601
1602 if (htab->elf.dynamic_sections_created
1603 && h->plt.refcount > 0)
1604 {
1605 /* Make sure this symbol is output as a dynamic symbol.
1606 Undefined weak syms won't yet be marked as dynamic. */
1607 if (h->dynindx == -1
1608 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1609 {
1610 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1611 return FALSE;
1612 }
1613
1614 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
1615 {
1616 asection *s = htab->splt;
1617
1618 /* The first four entries in .plt are reserved. */
1619 if (s->_raw_size == 0)
1620 s->_raw_size = 4 * PLT_ENTRY_SIZE;
1621
1622 /* The procedure linkage table has a maximum size. */
1623 if (s->_raw_size >= 0x400000)
1624 {
1625 bfd_set_error (bfd_error_bad_value);
1626 return FALSE;
1627 }
1628
1629 h->plt.offset = s->_raw_size;
1630
1631 /* If this symbol is not defined in a regular file, and we are
1632 not generating a shared library, then set the symbol to this
1633 location in the .plt. This is required to make function
1634 pointers compare as equal between the normal executable and
1635 the shared library. */
1636 if (! info->shared
1637 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1638 {
1639 h->root.u.def.section = s;
1640 h->root.u.def.value = h->plt.offset;
1641 }
1642
1643 /* Make room for this entry. */
1644 s->_raw_size += PLT_ENTRY_SIZE;
1645
1646 /* We also need to make an entry in the .rela.plt section. */
1647 htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
1648 }
1649 else
1650 {
1651 h->plt.offset = (bfd_vma) -1;
1652 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1653 }
1654 }
1655 else
1656 {
1657 h->plt.offset = (bfd_vma) -1;
1658 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1659 }
1660
1661 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
1662 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
1663 if (h->got.refcount > 0
1664 && !info->shared
1665 && h->dynindx == -1
1666 && elf32_sparc_hash_entry(h)->tls_type == GOT_TLS_IE)
1667 h->got.offset = (bfd_vma) -1;
1668 else if (h->got.refcount > 0)
1669 {
1670 asection *s;
1671 bfd_boolean dyn;
1672 int tls_type = elf32_sparc_hash_entry(h)->tls_type;
1673
1674 /* Make sure this symbol is output as a dynamic symbol.
1675 Undefined weak syms won't yet be marked as dynamic. */
1676 if (h->dynindx == -1
1677 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1678 {
1679 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1680 return FALSE;
1681 }
1682
1683 s = htab->sgot;
1684 h->got.offset = s->_raw_size;
1685 s->_raw_size += 4;
1686 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
1687 if (tls_type == GOT_TLS_GD)
1688 s->_raw_size += 4;
1689 dyn = htab->elf.dynamic_sections_created;
1690 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
1691 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if
1692 global. */
1693 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1694 || tls_type == GOT_TLS_IE)
1695 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1696 else if (tls_type == GOT_TLS_GD)
1697 htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rela);
1698 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
1699 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1700 }
1701 else
1702 h->got.offset = (bfd_vma) -1;
1703
1704 eh = (struct elf32_sparc_link_hash_entry *) h;
1705 if (eh->dyn_relocs == NULL)
1706 return TRUE;
1707
1708 /* In the shared -Bsymbolic case, discard space allocated for
1709 dynamic pc-relative relocs against symbols which turn out to be
1710 defined in regular objects. For the normal shared case, discard
1711 space for pc-relative relocs that have become local due to symbol
1712 visibility changes. */
1713
1714 if (info->shared)
1715 {
1716 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1717 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
1718 || info->symbolic))
1719 {
1720 struct elf32_sparc_dyn_relocs **pp;
1721
1722 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1723 {
1724 p->count -= p->pc_count;
1725 p->pc_count = 0;
1726 if (p->count == 0)
1727 *pp = p->next;
1728 else
1729 pp = &p->next;
1730 }
1731 }
1732 }
1733 else
1734 {
1735 /* For the non-shared case, discard space for relocs against
1736 symbols which turn out to need copy relocs or are not
1737 dynamic. */
1738
1739 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1740 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1741 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1742 || (htab->elf.dynamic_sections_created
1743 && (h->root.type == bfd_link_hash_undefweak
1744 || h->root.type == bfd_link_hash_undefined))))
1745 {
1746 /* Make sure this symbol is output as a dynamic symbol.
1747 Undefined weak syms won't yet be marked as dynamic. */
1748 if (h->dynindx == -1
1749 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1750 {
1751 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1752 return FALSE;
1753 }
1754
1755 /* If that succeeded, we know we'll be keeping all the
1756 relocs. */
1757 if (h->dynindx != -1)
1758 goto keep;
1759 }
1760
1761 eh->dyn_relocs = NULL;
1762
1763 keep: ;
1764 }
1765
1766 /* Finally, allocate space. */
1767 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1768 {
1769 asection *sreloc = elf_section_data (p->sec)->sreloc;
1770 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
1771 }
1772
1773 return TRUE;
1774 }
1775
1776 /* Find any dynamic relocs that apply to read-only sections. */
1777
1778 static bfd_boolean
1779 readonly_dynrelocs (h, inf)
1780 struct elf_link_hash_entry *h;
1781 PTR inf;
1782 {
1783 struct elf32_sparc_link_hash_entry *eh;
1784 struct elf32_sparc_dyn_relocs *p;
1785
1786 if (h->root.type == bfd_link_hash_warning)
1787 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1788
1789 eh = (struct elf32_sparc_link_hash_entry *) h;
1790 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1791 {
1792 asection *s = p->sec->output_section;
1793
1794 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1795 {
1796 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1797
1798 info->flags |= DF_TEXTREL;
1799
1800 /* Not an error, just cut short the traversal. */
1801 return FALSE;
1802 }
1803 }
1804 return TRUE;
1805 }
1806
1807 /* Set the sizes of the dynamic sections. */
1808
1809 static bfd_boolean
1810 elf32_sparc_size_dynamic_sections (output_bfd, info)
1811 bfd *output_bfd ATTRIBUTE_UNUSED;
1812 struct bfd_link_info *info;
1813 {
1814 struct elf32_sparc_link_hash_table *htab;
1815 bfd *dynobj;
1816 asection *s;
1817 bfd *ibfd;
1818
1819 htab = elf32_sparc_hash_table (info);
1820 dynobj = htab->elf.dynobj;
1821 BFD_ASSERT (dynobj != NULL);
1822
1823 if (elf_hash_table (info)->dynamic_sections_created)
1824 {
1825 /* Set the contents of the .interp section to the interpreter. */
1826 if (info->executable)
1827 {
1828 s = bfd_get_section_by_name (dynobj, ".interp");
1829 BFD_ASSERT (s != NULL);
1830 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1831 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1832 }
1833 }
1834
1835 /* Set up .got offsets for local syms, and space for local dynamic
1836 relocs. */
1837 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1838 {
1839 bfd_signed_vma *local_got;
1840 bfd_signed_vma *end_local_got;
1841 char *local_tls_type;
1842 bfd_size_type locsymcount;
1843 Elf_Internal_Shdr *symtab_hdr;
1844 asection *srel;
1845
1846 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
1847 continue;
1848
1849 for (s = ibfd->sections; s != NULL; s = s->next)
1850 {
1851 struct elf32_sparc_dyn_relocs *p;
1852
1853 for (p = *((struct elf32_sparc_dyn_relocs **)
1854 &elf_section_data (s)->local_dynrel);
1855 p != NULL;
1856 p = p->next)
1857 {
1858 if (!bfd_is_abs_section (p->sec)
1859 && bfd_is_abs_section (p->sec->output_section))
1860 {
1861 /* Input section has been discarded, either because
1862 it is a copy of a linkonce section or due to
1863 linker script /DISCARD/, so we'll be discarding
1864 the relocs too. */
1865 }
1866 else if (p->count != 0)
1867 {
1868 srel = elf_section_data (p->sec)->sreloc;
1869 srel->_raw_size += p->count * sizeof (Elf32_External_Rela);
1870 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1871 info->flags |= DF_TEXTREL;
1872 }
1873 }
1874 }
1875
1876 local_got = elf_local_got_refcounts (ibfd);
1877 if (!local_got)
1878 continue;
1879
1880 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
1881 locsymcount = symtab_hdr->sh_info;
1882 end_local_got = local_got + locsymcount;
1883 local_tls_type = elf32_sparc_local_got_tls_type (ibfd);
1884 s = htab->sgot;
1885 srel = htab->srelgot;
1886 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
1887 {
1888 if (*local_got > 0)
1889 {
1890 *local_got = s->_raw_size;
1891 s->_raw_size += 4;
1892 if (*local_tls_type == GOT_TLS_GD)
1893 s->_raw_size += 4;
1894 if (info->shared
1895 || *local_tls_type == GOT_TLS_GD
1896 || *local_tls_type == GOT_TLS_IE)
1897 srel->_raw_size += sizeof (Elf32_External_Rela);
1898 }
1899 else
1900 *local_got = (bfd_vma) -1;
1901 }
1902 }
1903
1904 if (htab->tls_ldm_got.refcount > 0)
1905 {
1906 /* Allocate 2 got entries and 1 dynamic reloc for
1907 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
1908 htab->tls_ldm_got.offset = htab->sgot->_raw_size;
1909 htab->sgot->_raw_size += 8;
1910 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
1911 }
1912 else
1913 htab->tls_ldm_got.offset = -1;
1914
1915 /* Allocate global sym .plt and .got entries, and space for global
1916 sym dynamic relocs. */
1917 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
1918
1919 if (elf_hash_table (info)->dynamic_sections_created)
1920 {
1921 /* Make space for the trailing nop in .plt. */
1922 if (htab->splt->_raw_size > 0)
1923 htab->splt->_raw_size += 4;
1924
1925 /* If the .got section is more than 0x1000 bytes, we add
1926 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1927 bit relocations have a greater chance of working. */
1928 if (htab->sgot->_raw_size >= 0x1000
1929 && elf_hash_table (info)->hgot->root.u.def.value == 0)
1930 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
1931 }
1932
1933 /* The check_relocs and adjust_dynamic_symbol entry points have
1934 determined the sizes of the various dynamic sections. Allocate
1935 memory for them. */
1936 for (s = dynobj->sections; s != NULL; s = s->next)
1937 {
1938 const char *name;
1939 bfd_boolean strip = FALSE;
1940
1941 if ((s->flags & SEC_LINKER_CREATED) == 0)
1942 continue;
1943
1944 /* It's OK to base decisions on the section name, because none
1945 of the dynobj section names depend upon the input files. */
1946 name = bfd_get_section_name (dynobj, s);
1947
1948 if (strncmp (name, ".rela", 5) == 0)
1949 {
1950 if (s->_raw_size == 0)
1951 {
1952 /* If we don't need this section, strip it from the
1953 output file. This is to handle .rela.bss and
1954 .rel.plt. We must create it in
1955 create_dynamic_sections, because it must be created
1956 before the linker maps input sections to output
1957 sections. The linker does that before
1958 adjust_dynamic_symbol is called, and it is that
1959 function which decides whether anything needs to go
1960 into these sections. */
1961 strip = TRUE;
1962 }
1963 else
1964 {
1965 /* We use the reloc_count field as a counter if we need
1966 to copy relocs into the output file. */
1967 s->reloc_count = 0;
1968 }
1969 }
1970 else if (s != htab->splt && s != htab->sgot)
1971 {
1972 /* It's not one of our sections, so don't allocate space. */
1973 continue;
1974 }
1975
1976 if (strip)
1977 {
1978 _bfd_strip_section_from_output (info, s);
1979 continue;
1980 }
1981
1982 /* Allocate memory for the section contents. */
1983 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
1984 Unused entries should be reclaimed before the section's contents
1985 are written out, but at the moment this does not happen. Thus in
1986 order to prevent writing out garbage, we initialise the section's
1987 contents to zero. */
1988 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
1989 if (s->contents == NULL && s->_raw_size != 0)
1990 return FALSE;
1991 }
1992
1993 if (elf_hash_table (info)->dynamic_sections_created)
1994 {
1995 /* Add some entries to the .dynamic section. We fill in the
1996 values later, in elf32_sparc_finish_dynamic_sections, but we
1997 must add the entries now so that we get the correct size for
1998 the .dynamic section. The DT_DEBUG entry is filled in by the
1999 dynamic linker and used by the debugger. */
2000 #define add_dynamic_entry(TAG, VAL) \
2001 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2002
2003 if (info->executable)
2004 {
2005 if (!add_dynamic_entry (DT_DEBUG, 0))
2006 return FALSE;
2007 }
2008
2009 if (htab->srelplt->_raw_size != 0)
2010 {
2011 if (!add_dynamic_entry (DT_PLTGOT, 0)
2012 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2013 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2014 || !add_dynamic_entry (DT_JMPREL, 0))
2015 return FALSE;
2016 }
2017
2018 if (!add_dynamic_entry (DT_RELA, 0)
2019 || !add_dynamic_entry (DT_RELASZ, 0)
2020 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2021 return FALSE;
2022
2023 /* If any dynamic relocs apply to a read-only section,
2024 then we need a DT_TEXTREL entry. */
2025 if ((info->flags & DF_TEXTREL) == 0)
2026 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2027 (PTR) info);
2028
2029 if (info->flags & DF_TEXTREL)
2030 {
2031 if (!add_dynamic_entry (DT_TEXTREL, 0))
2032 return FALSE;
2033 }
2034 }
2035 #undef add_dynamic_entry
2036
2037 return TRUE;
2038 }
2039
2040 struct elf32_sparc_section_data
2041 {
2042 struct bfd_elf_section_data elf;
2043 unsigned int do_relax;
2044 };
2045
2046 #define sec_do_relax(sec) \
2047 ((struct elf32_sparc_section_data *) elf_section_data (sec))->do_relax
2048
2049 static bfd_boolean
2050 elf32_sparc_new_section_hook (abfd, sec)
2051 bfd *abfd;
2052 asection *sec;
2053 {
2054 struct elf32_sparc_section_data *sdata;
2055 bfd_size_type amt = sizeof (*sdata);
2056
2057 sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt);
2058 if (sdata == NULL)
2059 return FALSE;
2060 sec->used_by_bfd = (PTR) sdata;
2061
2062 return _bfd_elf_new_section_hook (abfd, sec);
2063 }
2064
2065 static bfd_boolean
2066 elf32_sparc_relax_section (abfd, section, link_info, again)
2067 bfd *abfd ATTRIBUTE_UNUSED;
2068 asection *section ATTRIBUTE_UNUSED;
2069 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
2070 bfd_boolean *again;
2071 {
2072 *again = FALSE;
2073 sec_do_relax (section) = 1;
2074 return TRUE;
2075 }
2076
2077 /* Return the base VMA address which should be subtracted from real addresses
2078 when resolving @dtpoff relocation.
2079 This is PT_TLS segment p_vaddr. */
2080
2081 static bfd_vma
2082 dtpoff_base (info)
2083 struct bfd_link_info *info;
2084 {
2085 /* If tls_segment is NULL, we should have signalled an error already. */
2086 if (elf_hash_table (info)->tls_segment == NULL)
2087 return 0;
2088 return elf_hash_table (info)->tls_segment->start;
2089 }
2090
2091 /* Return the relocation value for @tpoff relocation
2092 if STT_TLS virtual address is ADDRESS. */
2093
2094 static bfd_vma
2095 tpoff (info, address)
2096 struct bfd_link_info *info;
2097 bfd_vma address;
2098 {
2099 struct elf_link_tls_segment *tls_segment
2100 = elf_hash_table (info)->tls_segment;
2101
2102 /* If tls_segment is NULL, we should have signalled an error already. */
2103 if (tls_segment == NULL)
2104 return 0;
2105 return -(align_power (tls_segment->size, tls_segment->align)
2106 + tls_segment->start - address);
2107 }
2108
2109 /* Relocate a SPARC ELF section. */
2110
2111 static bfd_boolean
2112 elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
2113 contents, relocs, local_syms, local_sections)
2114 bfd *output_bfd;
2115 struct bfd_link_info *info;
2116 bfd *input_bfd;
2117 asection *input_section;
2118 bfd_byte *contents;
2119 Elf_Internal_Rela *relocs;
2120 Elf_Internal_Sym *local_syms;
2121 asection **local_sections;
2122 {
2123 struct elf32_sparc_link_hash_table *htab;
2124 Elf_Internal_Shdr *symtab_hdr;
2125 struct elf_link_hash_entry **sym_hashes;
2126 bfd_vma *local_got_offsets;
2127 bfd_vma got_base;
2128 asection *sreloc;
2129 Elf_Internal_Rela *rel;
2130 Elf_Internal_Rela *relend;
2131
2132 if (info->relocatable)
2133 return TRUE;
2134
2135 htab = elf32_sparc_hash_table (info);
2136 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2137 sym_hashes = elf_sym_hashes (input_bfd);
2138 local_got_offsets = elf_local_got_offsets (input_bfd);
2139
2140 if (elf_hash_table (info)->hgot == NULL)
2141 got_base = 0;
2142 else
2143 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2144
2145 sreloc = elf_section_data (input_section)->sreloc;
2146
2147 rel = relocs;
2148 relend = relocs + input_section->reloc_count;
2149 for (; rel < relend; rel++)
2150 {
2151 int r_type, tls_type;
2152 reloc_howto_type *howto;
2153 unsigned long r_symndx;
2154 struct elf_link_hash_entry *h;
2155 Elf_Internal_Sym *sym;
2156 asection *sec;
2157 bfd_vma relocation, off;
2158 bfd_reloc_status_type r;
2159 bfd_boolean is_plt = FALSE;
2160 bfd_boolean unresolved_reloc;
2161
2162 r_type = ELF32_R_TYPE (rel->r_info);
2163
2164 if (r_type == R_SPARC_GNU_VTINHERIT
2165 || r_type == R_SPARC_GNU_VTENTRY)
2166 continue;
2167
2168 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2169 {
2170 bfd_set_error (bfd_error_bad_value);
2171 return FALSE;
2172 }
2173 howto = _bfd_sparc_elf_howto_table + r_type;
2174
2175 /* This is a final link. */
2176 r_symndx = ELF32_R_SYM (rel->r_info);
2177 h = NULL;
2178 sym = NULL;
2179 sec = NULL;
2180 unresolved_reloc = FALSE;
2181 if (r_symndx < symtab_hdr->sh_info)
2182 {
2183 sym = local_syms + r_symndx;
2184 sec = local_sections[r_symndx];
2185 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
2186 }
2187 else
2188 {
2189 bfd_boolean warned ATTRIBUTE_UNUSED;
2190
2191 RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
2192 symtab_hdr, relocation, sec,
2193 unresolved_reloc, info,
2194 warned);
2195 }
2196
2197 switch (r_type)
2198 {
2199 case R_SPARC_GOT10:
2200 case R_SPARC_GOT13:
2201 case R_SPARC_GOT22:
2202 /* Relocation is to the entry for this symbol in the global
2203 offset table. */
2204 if (htab->sgot == NULL)
2205 abort ();
2206
2207 if (h != NULL)
2208 {
2209 bfd_boolean dyn;
2210
2211 off = h->got.offset;
2212 BFD_ASSERT (off != (bfd_vma) -1);
2213 dyn = elf_hash_table (info)->dynamic_sections_created;
2214
2215 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
2216 || (info->shared
2217 && (info->symbolic
2218 || h->dynindx == -1
2219 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
2220 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
2221 {
2222 /* This is actually a static link, or it is a
2223 -Bsymbolic link and the symbol is defined
2224 locally, or the symbol was forced to be local
2225 because of a version file. We must initialize
2226 this entry in the global offset table. Since the
2227 offset must always be a multiple of 4, we use the
2228 least significant bit to record whether we have
2229 initialized it already.
2230
2231 When doing a dynamic link, we create a .rela.got
2232 relocation entry to initialize the value. This
2233 is done in the finish_dynamic_symbol routine. */
2234 if ((off & 1) != 0)
2235 off &= ~1;
2236 else
2237 {
2238 bfd_put_32 (output_bfd, relocation,
2239 htab->sgot->contents + off);
2240 h->got.offset |= 1;
2241 }
2242 }
2243 else
2244 unresolved_reloc = FALSE;
2245 }
2246 else
2247 {
2248 BFD_ASSERT (local_got_offsets != NULL
2249 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2250
2251 off = local_got_offsets[r_symndx];
2252
2253 /* The offset must always be a multiple of 4. We use
2254 the least significant bit to record whether we have
2255 already processed this entry. */
2256 if ((off & 1) != 0)
2257 off &= ~1;
2258 else
2259 {
2260
2261 if (info->shared)
2262 {
2263 asection *s;
2264 Elf_Internal_Rela outrel;
2265 bfd_byte *loc;
2266
2267 /* We need to generate a R_SPARC_RELATIVE reloc
2268 for the dynamic linker. */
2269 s = htab->srelgot;
2270 BFD_ASSERT (s != NULL);
2271
2272 outrel.r_offset = (htab->sgot->output_section->vma
2273 + htab->sgot->output_offset
2274 + off);
2275 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2276 outrel.r_addend = relocation;
2277 relocation = 0;
2278 loc = s->contents;
2279 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
2280 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2281 }
2282
2283 bfd_put_32 (output_bfd, relocation,
2284 htab->sgot->contents + off);
2285 local_got_offsets[r_symndx] |= 1;
2286 }
2287 }
2288 relocation = htab->sgot->output_offset + off - got_base;
2289 break;
2290
2291 case R_SPARC_PLT32:
2292 if (h == NULL || h->plt.offset == (bfd_vma) -1)
2293 {
2294 r_type = R_SPARC_32;
2295 goto r_sparc_plt32;
2296 }
2297 /* Fall through. */
2298 case R_SPARC_WPLT30:
2299 r_sparc_wplt30:
2300 /* Relocation is to the entry for this symbol in the
2301 procedure linkage table. */
2302
2303 /* The Solaris native assembler will generate a WPLT30 reloc
2304 for a local symbol if you assemble a call from one
2305 section to another when using -K pic. We treat it as
2306 WDISP30. */
2307 if (h == NULL)
2308 break;
2309
2310 if (h->plt.offset == (bfd_vma) -1)
2311 {
2312 /* We didn't make a PLT entry for this symbol. This
2313 happens when statically linking PIC code, or when
2314 using -Bsymbolic. */
2315 break;
2316 }
2317
2318 if (htab->splt == NULL)
2319 abort ();
2320
2321 relocation = (htab->splt->output_section->vma
2322 + htab->splt->output_offset
2323 + h->plt.offset);
2324 unresolved_reloc = FALSE;
2325 if (r_type == R_SPARC_PLT32)
2326 {
2327 r_type = R_SPARC_32;
2328 is_plt = TRUE;
2329 goto r_sparc_plt32;
2330 }
2331 break;
2332
2333 case R_SPARC_PC10:
2334 case R_SPARC_PC22:
2335 if (h != NULL
2336 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2337 break;
2338 /* Fall through. */
2339 case R_SPARC_DISP8:
2340 case R_SPARC_DISP16:
2341 case R_SPARC_DISP32:
2342 case R_SPARC_WDISP30:
2343 case R_SPARC_WDISP22:
2344 case R_SPARC_WDISP19:
2345 case R_SPARC_WDISP16:
2346 case R_SPARC_8:
2347 case R_SPARC_16:
2348 case R_SPARC_32:
2349 case R_SPARC_HI22:
2350 case R_SPARC_22:
2351 case R_SPARC_13:
2352 case R_SPARC_LO10:
2353 case R_SPARC_UA16:
2354 case R_SPARC_UA32:
2355 r_sparc_plt32:
2356 /* r_symndx will be zero only for relocs against symbols
2357 from removed linkonce sections, or sections discarded by
2358 a linker script. */
2359 if (r_symndx == 0
2360 || (input_section->flags & SEC_ALLOC) == 0)
2361 break;
2362
2363 if ((info->shared
2364 && (! howto->pc_relative
2365 || (h != NULL
2366 && h->dynindx != -1
2367 && (! info->symbolic
2368 || (h->elf_link_hash_flags
2369 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2370 || (!info->shared
2371 && h != NULL
2372 && h->dynindx != -1
2373 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2374 && (((h->elf_link_hash_flags
2375 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2376 && (h->elf_link_hash_flags
2377 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2378 || h->root.type == bfd_link_hash_undefweak
2379 || h->root.type == bfd_link_hash_undefined)))
2380 {
2381 Elf_Internal_Rela outrel;
2382 bfd_byte *loc;
2383 bfd_boolean skip, relocate = FALSE;
2384
2385 /* When generating a shared object, these relocations
2386 are copied into the output file to be resolved at run
2387 time. */
2388
2389 BFD_ASSERT (sreloc != NULL);
2390
2391 skip = FALSE;
2392
2393 outrel.r_offset =
2394 _bfd_elf_section_offset (output_bfd, info, input_section,
2395 rel->r_offset);
2396 if (outrel.r_offset == (bfd_vma) -1)
2397 skip = TRUE;
2398 else if (outrel.r_offset == (bfd_vma) -2)
2399 skip = TRUE, relocate = TRUE;
2400 outrel.r_offset += (input_section->output_section->vma
2401 + input_section->output_offset);
2402
2403 /* Optimize unaligned reloc usage now that we know where
2404 it finally resides. */
2405 switch (r_type)
2406 {
2407 case R_SPARC_16:
2408 if (outrel.r_offset & 1)
2409 r_type = R_SPARC_UA16;
2410 break;
2411 case R_SPARC_UA16:
2412 if (!(outrel.r_offset & 1))
2413 r_type = R_SPARC_16;
2414 break;
2415 case R_SPARC_32:
2416 if (outrel.r_offset & 3)
2417 r_type = R_SPARC_UA32;
2418 break;
2419 case R_SPARC_UA32:
2420 if (!(outrel.r_offset & 3))
2421 r_type = R_SPARC_32;
2422 break;
2423 case R_SPARC_DISP8:
2424 case R_SPARC_DISP16:
2425 case R_SPARC_DISP32:
2426 /* If the symbol is not dynamic, we should not keep
2427 a dynamic relocation. But an .rela.* slot has been
2428 allocated for it, output R_SPARC_NONE.
2429 FIXME: Add code tracking needed dynamic relocs as
2430 e.g. i386 has. */
2431 if (h->dynindx == -1)
2432 skip = TRUE, relocate = TRUE;
2433 break;
2434 }
2435
2436 if (skip)
2437 memset (&outrel, 0, sizeof outrel);
2438 /* h->dynindx may be -1 if the symbol was marked to
2439 become local. */
2440 else if (h != NULL && ! is_plt
2441 && ((! info->symbolic && h->dynindx != -1)
2442 || (h->elf_link_hash_flags
2443 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2444 {
2445 BFD_ASSERT (h->dynindx != -1);
2446 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2447 outrel.r_addend = rel->r_addend;
2448 }
2449 else
2450 {
2451 if (r_type == R_SPARC_32)
2452 {
2453 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
2454 outrel.r_addend = relocation + rel->r_addend;
2455 }
2456 else
2457 {
2458 long indx;
2459
2460 if (is_plt)
2461 sec = htab->splt;
2462 else if (h == NULL)
2463 sec = local_sections[r_symndx];
2464 else
2465 {
2466 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2467 || (h->root.type
2468 == bfd_link_hash_defweak));
2469 sec = h->root.u.def.section;
2470 }
2471 if (sec != NULL && bfd_is_abs_section (sec))
2472 indx = 0;
2473 else if (sec == NULL || sec->owner == NULL)
2474 {
2475 bfd_set_error (bfd_error_bad_value);
2476 return FALSE;
2477 }
2478 else
2479 {
2480 asection *osec;
2481
2482 osec = sec->output_section;
2483 indx = elf_section_data (osec)->dynindx;
2484
2485 /* FIXME: we really should be able to link non-pic
2486 shared libraries. */
2487 if (indx == 0)
2488 {
2489 BFD_FAIL ();
2490 (*_bfd_error_handler)
2491 (_("%s: probably compiled without -fPIC?"),
2492 bfd_archive_filename (input_bfd));
2493 bfd_set_error (bfd_error_bad_value);
2494 return FALSE;
2495 }
2496 }
2497
2498 outrel.r_info = ELF32_R_INFO (indx, r_type);
2499 outrel.r_addend = relocation + rel->r_addend;
2500 }
2501 }
2502
2503 loc = sreloc->contents;
2504 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2505 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2506
2507 /* This reloc will be computed at runtime, so there's no
2508 need to do anything now. */
2509 if (! relocate)
2510 continue;
2511 }
2512 break;
2513
2514 case R_SPARC_TLS_GD_HI22:
2515 if (! elf32_sparc_tdata (input_bfd)->has_tlsgd)
2516 {
2517 /* R_SPARC_REV32 used the same reloc number as
2518 R_SPARC_TLS_GD_HI22. */
2519 r_type = R_SPARC_REV32;
2520 break;
2521 }
2522 /* Fall through */
2523
2524 case R_SPARC_TLS_GD_LO10:
2525 case R_SPARC_TLS_IE_HI22:
2526 case R_SPARC_TLS_IE_LO10:
2527 r_type = elf32_sparc_tls_transition (info, input_bfd, r_type,
2528 h == NULL);
2529 tls_type = GOT_UNKNOWN;
2530 if (h == NULL && local_got_offsets)
2531 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2532 else if (h != NULL)
2533 {
2534 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2535 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
2536 switch (ELF32_R_TYPE (rel->r_info))
2537 {
2538 case R_SPARC_TLS_GD_HI22:
2539 case R_SPARC_TLS_IE_HI22:
2540 r_type = R_SPARC_TLS_LE_HIX22;
2541 break;
2542 default:
2543 r_type = R_SPARC_TLS_LE_LOX10;
2544 break;
2545 }
2546 }
2547 if (tls_type == GOT_TLS_IE)
2548 switch (r_type)
2549 {
2550 case R_SPARC_TLS_GD_HI22:
2551 r_type = R_SPARC_TLS_IE_HI22;
2552 break;
2553 case R_SPARC_TLS_GD_LO10:
2554 r_type = R_SPARC_TLS_IE_LO10;
2555 break;
2556 }
2557
2558 if (r_type == R_SPARC_TLS_LE_HIX22)
2559 {
2560 relocation = tpoff (info, relocation);
2561 break;
2562 }
2563 if (r_type == R_SPARC_TLS_LE_LOX10)
2564 {
2565 /* Change add into xor. */
2566 relocation = tpoff (info, relocation);
2567 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
2568 contents + rel->r_offset)
2569 | 0x80182000), contents + rel->r_offset);
2570 break;
2571 }
2572
2573 if (h != NULL)
2574 {
2575 off = h->got.offset;
2576 h->got.offset |= 1;
2577 }
2578 else
2579 {
2580 BFD_ASSERT (local_got_offsets != NULL);
2581 off = local_got_offsets[r_symndx];
2582 local_got_offsets[r_symndx] |= 1;
2583 }
2584
2585 r_sparc_tlsldm:
2586 if (htab->sgot == NULL)
2587 abort ();
2588
2589 if ((off & 1) != 0)
2590 off &= ~1;
2591 else
2592 {
2593 Elf_Internal_Rela outrel;
2594 Elf32_External_Rela *loc;
2595 int dr_type, indx;
2596
2597 if (htab->srelgot == NULL)
2598 abort ();
2599
2600 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
2601 outrel.r_offset = (htab->sgot->output_section->vma
2602 + htab->sgot->output_offset + off);
2603 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2604 if (r_type == R_SPARC_TLS_IE_HI22
2605 || r_type == R_SPARC_TLS_IE_LO10)
2606 dr_type = R_SPARC_TLS_TPOFF32;
2607 else
2608 dr_type = R_SPARC_TLS_DTPMOD32;
2609 if (dr_type == R_SPARC_TLS_TPOFF32 && indx == 0)
2610 outrel.r_addend = relocation - dtpoff_base (info);
2611 else
2612 outrel.r_addend = 0;
2613 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2614 loc = (Elf32_External_Rela *) htab->srelgot->contents;
2615 loc += htab->srelgot->reloc_count++;
2616 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2617 (bfd_byte *) loc);
2618
2619 if (r_type == R_SPARC_TLS_GD_HI22
2620 || r_type == R_SPARC_TLS_GD_LO10)
2621 {
2622 if (indx == 0)
2623 {
2624 BFD_ASSERT (! unresolved_reloc);
2625 bfd_put_32 (output_bfd,
2626 relocation - dtpoff_base (info),
2627 htab->sgot->contents + off + 4);
2628 }
2629 else
2630 {
2631 bfd_put_32 (output_bfd, 0,
2632 htab->sgot->contents + off + 4);
2633 outrel.r_info = ELF32_R_INFO (indx,
2634 R_SPARC_TLS_DTPOFF32);
2635 outrel.r_offset += 4;
2636 htab->srelgot->reloc_count++;
2637 loc++;
2638 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2639 (bfd_byte *) loc);
2640 }
2641 }
2642 else if (dr_type == R_SPARC_TLS_DTPMOD32)
2643 {
2644 bfd_put_32 (output_bfd, 0,
2645 htab->sgot->contents + off + 4);
2646 }
2647 }
2648
2649 if (off >= (bfd_vma) -2)
2650 abort ();
2651
2652 relocation = htab->sgot->output_offset + off - got_base;
2653 unresolved_reloc = FALSE;
2654 howto = _bfd_sparc_elf_howto_table + r_type;
2655 break;
2656
2657 case R_SPARC_TLS_LDM_HI22:
2658 case R_SPARC_TLS_LDM_LO10:
2659 if (! info->shared)
2660 {
2661 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2662 continue;
2663 }
2664 off = htab->tls_ldm_got.offset;
2665 htab->tls_ldm_got.offset |= 1;
2666 goto r_sparc_tlsldm;
2667
2668 case R_SPARC_TLS_LDO_HIX22:
2669 case R_SPARC_TLS_LDO_LOX10:
2670 if (info->shared)
2671 relocation -= dtpoff_base (info);
2672 else
2673 relocation = tpoff (info, relocation);
2674 break;
2675
2676 case R_SPARC_TLS_LE_HIX22:
2677 case R_SPARC_TLS_LE_LOX10:
2678 if (info->shared)
2679 {
2680 Elf_Internal_Rela outrel;
2681 bfd_boolean skip, relocate = FALSE;
2682
2683 BFD_ASSERT (sreloc != NULL);
2684 skip = FALSE;
2685 outrel.r_offset =
2686 _bfd_elf_section_offset (output_bfd, info, input_section,
2687 rel->r_offset);
2688 if (outrel.r_offset == (bfd_vma) -1)
2689 skip = TRUE;
2690 else if (outrel.r_offset == (bfd_vma) -2)
2691 skip = TRUE, relocate = TRUE;
2692 outrel.r_offset += (input_section->output_section->vma
2693 + input_section->output_offset);
2694 if (skip)
2695 memset (&outrel, 0, sizeof outrel);
2696 else
2697 {
2698 outrel.r_info = ELF32_R_INFO (0, r_type);
2699 outrel.r_addend = relocation - dtpoff_base (info)
2700 + rel->r_addend;
2701 }
2702
2703 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2704 (bfd_byte *) (((Elf32_External_Rela *)
2705 sreloc->contents)
2706 + sreloc->reloc_count));
2707 ++sreloc->reloc_count;
2708 continue;
2709 }
2710 relocation = tpoff (info, relocation);
2711 break;
2712
2713 case R_SPARC_TLS_LDM_CALL:
2714 if (! info->shared)
2715 {
2716 /* mov %g0, %o0 */
2717 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
2718 continue;
2719 }
2720 /* Fall through */
2721
2722 case R_SPARC_TLS_GD_CALL:
2723 tls_type = GOT_UNKNOWN;
2724 if (h == NULL && local_got_offsets)
2725 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2726 else if (h != NULL)
2727 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2728 if (! info->shared
2729 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
2730 {
2731 bfd_vma insn;
2732
2733 if (!info->shared && (h == NULL || h->dynindx == -1))
2734 {
2735 /* GD -> LE */
2736 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2737 continue;
2738 }
2739
2740 /* GD -> IE */
2741 if (rel + 1 < relend
2742 && ELF32_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
2743 && rel[1].r_offset == rel->r_offset + 4
2744 && ELF32_R_SYM (rel[1].r_info) == r_symndx
2745 && (((insn = bfd_get_32 (input_bfd,
2746 contents + rel[1].r_offset))
2747 >> 25) & 0x1f) == 8)
2748 {
2749 /* We have
2750 call __tls_get_addr, %tgd_call(foo)
2751 add %reg1, %reg2, %o0, %tgd_add(foo)
2752 and change it into IE:
2753 ld [%reg1 + %reg2], %o0, %tie_ld(foo)
2754 add %g7, %o0, %o0, %tie_add(foo).
2755 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
2756 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2. */
2757 bfd_put_32 (output_bfd, insn | 0xc0000000,
2758 contents + rel->r_offset);
2759 bfd_put_32 (output_bfd, 0x9001c008,
2760 contents + rel->r_offset + 4);
2761 rel++;
2762 continue;
2763 }
2764
2765 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset);
2766 continue;
2767 }
2768
2769 h = (struct elf_link_hash_entry *)
2770 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
2771 FALSE, TRUE);
2772 BFD_ASSERT (h != NULL);
2773 r_type = R_SPARC_WPLT30;
2774 howto = _bfd_sparc_elf_howto_table + r_type;
2775 goto r_sparc_wplt30;
2776
2777 case R_SPARC_TLS_GD_ADD:
2778 tls_type = GOT_UNKNOWN;
2779 if (h == NULL && local_got_offsets)
2780 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx];
2781 else if (h != NULL)
2782 tls_type = elf32_sparc_hash_entry(h)->tls_type;
2783 if (! info->shared || tls_type == GOT_TLS_IE)
2784 {
2785 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
2786 changed into IE:
2787 ld [%reg1 + %reg2], %reg3, %tie_ld(foo)
2788 or LE:
2789 add %g7, %reg2, %reg3. */
2790 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2791 if ((h != NULL && h->dynindx != -1) || info->shared)
2792 relocation = insn | 0xc0000000;
2793 else
2794 relocation = (insn & ~0x7c000) | 0x1c000;
2795 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2796 }
2797 continue;
2798
2799 case R_SPARC_TLS_LDM_ADD:
2800 if (! info->shared)
2801 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
2802 continue;
2803
2804 case R_SPARC_TLS_LDO_ADD:
2805 if (! info->shared)
2806 {
2807 /* Change rs1 into %g7. */
2808 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2809 insn = (insn & ~0x7c000) | 0x1c000;
2810 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2811 }
2812 continue;
2813
2814 case R_SPARC_TLS_IE_LD:
2815 case R_SPARC_TLS_IE_LDX:
2816 if (! info->shared && (h == NULL || h->dynindx == -1))
2817 {
2818 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2819 int rs2 = insn & 0x1f;
2820 int rd = (insn >> 25) & 0x1f;
2821
2822 if (rs2 == rd)
2823 relocation = SPARC_NOP;
2824 else
2825 relocation = 0x80100000 | (insn & 0x3e00001f);
2826 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
2827 }
2828 continue;
2829
2830 case R_SPARC_TLS_IE_ADD:
2831 /* Totally useless relocation. */
2832 continue;
2833
2834 case R_SPARC_TLS_DTPOFF32:
2835 relocation -= dtpoff_base (info);
2836 break;
2837
2838 default:
2839 break;
2840 }
2841
2842 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2843 because such sections are not SEC_ALLOC and thus ld.so will
2844 not process them. */
2845 if (unresolved_reloc
2846 && !((input_section->flags & SEC_DEBUGGING) != 0
2847 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
2848 (*_bfd_error_handler)
2849 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
2850 bfd_archive_filename (input_bfd),
2851 bfd_get_section_name (input_bfd, input_section),
2852 (long) rel->r_offset,
2853 h->root.root.string);
2854
2855 r = bfd_reloc_continue;
2856 if (r_type == R_SPARC_WDISP16)
2857 {
2858 bfd_vma x;
2859
2860 relocation += rel->r_addend;
2861 relocation -= (input_section->output_section->vma
2862 + input_section->output_offset);
2863 relocation -= rel->r_offset;
2864
2865 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2866 x |= ((((relocation >> 2) & 0xc000) << 6)
2867 | ((relocation >> 2) & 0x3fff));
2868 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2869
2870 if ((bfd_signed_vma) relocation < - 0x40000
2871 || (bfd_signed_vma) relocation > 0x3ffff)
2872 r = bfd_reloc_overflow;
2873 else
2874 r = bfd_reloc_ok;
2875 }
2876 else if (r_type == R_SPARC_REV32)
2877 {
2878 bfd_vma x;
2879
2880 relocation = relocation + rel->r_addend;
2881
2882 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2883 x = x + relocation;
2884 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
2885 r = bfd_reloc_ok;
2886 }
2887 else if (r_type == R_SPARC_TLS_LDO_HIX22
2888 || r_type == R_SPARC_TLS_LE_HIX22)
2889 {
2890 bfd_vma x;
2891
2892 relocation += rel->r_addend;
2893 relocation = relocation ^ 0xffffffff;
2894
2895 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2896 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
2897 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2898 r = bfd_reloc_ok;
2899 }
2900 else if (r_type == R_SPARC_TLS_LDO_LOX10
2901 || r_type == R_SPARC_TLS_LE_LOX10)
2902 {
2903 bfd_vma x;
2904
2905 relocation += rel->r_addend;
2906 relocation = (relocation & 0x3ff) | 0x1c00;
2907
2908 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2909 x = (x & ~(bfd_vma) 0x1fff) | relocation;
2910 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2911
2912 r = bfd_reloc_ok;
2913 }
2914 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
2915 && sec_do_relax (input_section)
2916 && rel->r_offset + 4 < input_section->_raw_size)
2917 {
2918 #define G0 0
2919 #define O7 15
2920 #define XCC (2 << 20)
2921 #define COND(x) (((x)&0xf)<<25)
2922 #define CONDA COND(0x8)
2923 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
2924 #define INSN_BA (F2(0,2) | CONDA)
2925 #define INSN_OR F3(2, 0x2, 0)
2926 #define INSN_NOP F2(0,4)
2927
2928 bfd_vma x, y;
2929
2930 /* If the instruction is a call with either:
2931 restore
2932 arithmetic instruction with rd == %o7
2933 where rs1 != %o7 and rs2 if it is register != %o7
2934 then we can optimize if the call destination is near
2935 by changing the call into a branch always. */
2936 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2937 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
2938 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
2939 {
2940 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
2941 || ((y & OP3(0x28)) == 0 /* arithmetic */
2942 && (y & RD(~0)) == RD(O7)))
2943 && (y & RS1(~0)) != RS1(O7)
2944 && ((y & F3I(~0))
2945 || (y & RS2(~0)) != RS2(O7)))
2946 {
2947 bfd_vma reloc;
2948
2949 reloc = relocation + rel->r_addend - rel->r_offset;
2950 reloc -= (input_section->output_section->vma
2951 + input_section->output_offset);
2952
2953 /* Ensure the reloc fits into simm22. */
2954 if ((reloc & 3) == 0
2955 && ((reloc & ~(bfd_vma)0x7fffff) == 0
2956 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
2957 {
2958 reloc >>= 2;
2959
2960 /* Check whether it fits into simm19 on v9. */
2961 if (((reloc & 0x3c0000) == 0
2962 || (reloc & 0x3c0000) == 0x3c0000)
2963 && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
2964 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
2965 else
2966 x = INSN_BA | (reloc & 0x3fffff); /* ba */
2967 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2968 r = bfd_reloc_ok;
2969 if (rel->r_offset >= 4
2970 && (y & (0xffffffff ^ RS1(~0)))
2971 == (INSN_OR | RD(O7) | RS2(G0)))
2972 {
2973 bfd_vma z;
2974 unsigned int reg;
2975
2976 z = bfd_get_32 (input_bfd,
2977 contents + rel->r_offset - 4);
2978 if ((z & (0xffffffff ^ RD(~0)))
2979 != (INSN_OR | RS1(O7) | RS2(G0)))
2980 break;
2981
2982 /* The sequence was
2983 or %o7, %g0, %rN
2984 call foo
2985 or %rN, %g0, %o7
2986
2987 If call foo was replaced with ba, replace
2988 or %rN, %g0, %o7 with nop. */
2989
2990 reg = (y & RS1(~0)) >> 14;
2991 if (reg != ((z & RD(~0)) >> 25)
2992 || reg == G0 || reg == O7)
2993 break;
2994
2995 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
2996 contents + rel->r_offset + 4);
2997 }
2998
2999 }
3000 }
3001 }
3002 }
3003
3004 if (r == bfd_reloc_continue)
3005 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3006 contents, rel->r_offset,
3007 relocation, rel->r_addend);
3008
3009 if (r != bfd_reloc_ok)
3010 {
3011 switch (r)
3012 {
3013 default:
3014 case bfd_reloc_outofrange:
3015 abort ();
3016 case bfd_reloc_overflow:
3017 {
3018 const char *name;
3019
3020 if (h != NULL)
3021 name = h->root.root.string;
3022 else
3023 {
3024 name = bfd_elf_string_from_elf_section (input_bfd,
3025 symtab_hdr->sh_link,
3026 sym->st_name);
3027 if (name == NULL)
3028 return FALSE;
3029 if (*name == '\0')
3030 name = bfd_section_name (input_bfd, sec);
3031 }
3032 if (! ((*info->callbacks->reloc_overflow)
3033 (info, name, howto->name, (bfd_vma) 0,
3034 input_bfd, input_section, rel->r_offset)))
3035 return FALSE;
3036 }
3037 break;
3038 }
3039 }
3040 }
3041
3042 return TRUE;
3043 }
3044
3045 /* Finish up dynamic symbol handling. We set the contents of various
3046 dynamic sections here. */
3047
3048 static bfd_boolean
3049 elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym)
3050 bfd *output_bfd;
3051 struct bfd_link_info *info;
3052 struct elf_link_hash_entry *h;
3053 Elf_Internal_Sym *sym;
3054 {
3055 bfd *dynobj;
3056 struct elf32_sparc_link_hash_table *htab;
3057
3058 htab = elf32_sparc_hash_table (info);
3059 dynobj = htab->elf.dynobj;
3060
3061 if (h->plt.offset != (bfd_vma) -1)
3062 {
3063 asection *splt;
3064 asection *srela;
3065 Elf_Internal_Rela rela;
3066 bfd_byte *loc;
3067
3068 /* This symbol has an entry in the procedure linkage table. Set
3069 it up. */
3070
3071 BFD_ASSERT (h->dynindx != -1);
3072
3073 splt = htab->splt;
3074 srela = htab->srelplt;
3075 BFD_ASSERT (splt != NULL && srela != NULL);
3076
3077 /* Fill in the entry in the procedure linkage table. */
3078 bfd_put_32 (output_bfd,
3079 PLT_ENTRY_WORD0 + h->plt.offset,
3080 splt->contents + h->plt.offset);
3081 bfd_put_32 (output_bfd,
3082 (PLT_ENTRY_WORD1
3083 + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)),
3084 splt->contents + h->plt.offset + 4);
3085 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3086 splt->contents + h->plt.offset + 8);
3087
3088 /* Fill in the entry in the .rela.plt section. */
3089 rela.r_offset = (splt->output_section->vma
3090 + splt->output_offset
3091 + h->plt.offset);
3092 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
3093 rela.r_addend = 0;
3094 loc = srela->contents;
3095 loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela);
3096 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3097
3098 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3099 {
3100 /* Mark the symbol as undefined, rather than as defined in
3101 the .plt section. Leave the value alone. */
3102 sym->st_shndx = SHN_UNDEF;
3103 /* If the symbol is weak, we do need to clear the value.
3104 Otherwise, the PLT entry would provide a definition for
3105 the symbol even if the symbol wasn't defined anywhere,
3106 and so the symbol would never be NULL. */
3107 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
3108 == 0)
3109 sym->st_value = 0;
3110 }
3111 }
3112
3113 if (h->got.offset != (bfd_vma) -1
3114 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_GD
3115 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_IE)
3116 {
3117 asection *sgot;
3118 asection *srela;
3119 Elf_Internal_Rela rela;
3120 bfd_byte *loc;
3121
3122 /* This symbol has an entry in the global offset table. Set it
3123 up. */
3124
3125 sgot = htab->sgot;
3126 srela = htab->srelgot;
3127 BFD_ASSERT (sgot != NULL && srela != NULL);
3128
3129 rela.r_offset = (sgot->output_section->vma
3130 + sgot->output_offset
3131 + (h->got.offset &~ (bfd_vma) 1));
3132
3133 /* If this is a -Bsymbolic link, and the symbol is defined
3134 locally, we just want to emit a RELATIVE reloc. Likewise if
3135 the symbol was forced to be local because of a version file.
3136 The entry in the global offset table will already have been
3137 initialized in the relocate_section function. */
3138 if (info->shared
3139 && (info->symbolic || h->dynindx == -1)
3140 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3141 {
3142 asection *sec = h->root.u.def.section;
3143 rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
3144 rela.r_addend = (h->root.u.def.value
3145 + sec->output_section->vma
3146 + sec->output_offset);
3147 }
3148 else
3149 {
3150 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
3151 rela.r_addend = 0;
3152 }
3153
3154 bfd_put_32 (output_bfd, (bfd_vma) 0,
3155 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
3156 loc = srela->contents;
3157 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3158 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3159 }
3160
3161 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3162 {
3163 asection *s;
3164 Elf_Internal_Rela rela;
3165 bfd_byte *loc;
3166
3167 /* This symbols needs a copy reloc. Set it up. */
3168
3169 BFD_ASSERT (h->dynindx != -1);
3170
3171 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3172 ".rela.bss");
3173 BFD_ASSERT (s != NULL);
3174
3175 rela.r_offset = (h->root.u.def.value
3176 + h->root.u.def.section->output_section->vma
3177 + h->root.u.def.section->output_offset);
3178 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY);
3179 rela.r_addend = 0;
3180 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3181 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3182 }
3183
3184 /* Mark some specially defined symbols as absolute. */
3185 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3186 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3187 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3188 sym->st_shndx = SHN_ABS;
3189
3190 return TRUE;
3191 }
3192
3193 /* Finish up the dynamic sections. */
3194
3195 static bfd_boolean
3196 elf32_sparc_finish_dynamic_sections (output_bfd, info)
3197 bfd *output_bfd;
3198 struct bfd_link_info *info;
3199 {
3200 bfd *dynobj;
3201 asection *sdyn;
3202 struct elf32_sparc_link_hash_table *htab;
3203
3204 htab = elf32_sparc_hash_table (info);
3205 dynobj = htab->elf.dynobj;
3206
3207 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3208
3209 if (elf_hash_table (info)->dynamic_sections_created)
3210 {
3211 asection *splt;
3212 Elf32_External_Dyn *dyncon, *dynconend;
3213
3214 splt = bfd_get_section_by_name (dynobj, ".plt");
3215 BFD_ASSERT (splt != NULL && sdyn != NULL);
3216
3217 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3218 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3219 for (; dyncon < dynconend; dyncon++)
3220 {
3221 Elf_Internal_Dyn dyn;
3222 const char *name;
3223 bfd_boolean size;
3224
3225 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3226
3227 switch (dyn.d_tag)
3228 {
3229 case DT_PLTGOT: name = ".plt"; size = FALSE; break;
3230 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
3231 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
3232 default: name = NULL; size = FALSE; break;
3233 }
3234
3235 if (name != NULL)
3236 {
3237 asection *s;
3238
3239 s = bfd_get_section_by_name (output_bfd, name);
3240 if (s == NULL)
3241 dyn.d_un.d_val = 0;
3242 else
3243 {
3244 if (! size)
3245 dyn.d_un.d_ptr = s->vma;
3246 else
3247 {
3248 if (s->_cooked_size != 0)
3249 dyn.d_un.d_val = s->_cooked_size;
3250 else
3251 dyn.d_un.d_val = s->_raw_size;
3252 }
3253 }
3254 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3255 }
3256 }
3257
3258 /* Clear the first four entries in the procedure linkage table,
3259 and put a nop in the last four bytes. */
3260 if (splt->_raw_size > 0)
3261 {
3262 memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
3263 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
3264 splt->contents + splt->_raw_size - 4);
3265 }
3266
3267 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3268 PLT_ENTRY_SIZE;
3269 }
3270
3271 /* Set the first entry in the global offset table to the address of
3272 the dynamic section. */
3273 if (htab->sgot && htab->sgot->_raw_size > 0)
3274 {
3275 if (sdyn == NULL)
3276 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents);
3277 else
3278 bfd_put_32 (output_bfd,
3279 sdyn->output_section->vma + sdyn->output_offset,
3280 htab->sgot->contents);
3281 }
3282
3283 if (htab->sgot)
3284 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3285
3286 return TRUE;
3287 }
3288 \f
3289 /* Functions for dealing with the e_flags field.
3290
3291 We don't define set_private_flags or copy_private_bfd_data because
3292 the only currently defined values are based on the bfd mach number,
3293 so we use the latter instead and defer setting e_flags until the
3294 file is written out. */
3295
3296 /* Merge backend specific data from an object file to the output
3297 object file when linking. */
3298
3299 static bfd_boolean
3300 elf32_sparc_merge_private_bfd_data (ibfd, obfd)
3301 bfd *ibfd;
3302 bfd *obfd;
3303 {
3304 bfd_boolean error;
3305 /* FIXME: This should not be static. */
3306 static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
3307
3308 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3309 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3310 return TRUE;
3311
3312 error = FALSE;
3313
3314 if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9)
3315 {
3316 error = TRUE;
3317 (*_bfd_error_handler)
3318 (_("%s: compiled for a 64 bit system and target is 32 bit"),
3319 bfd_archive_filename (ibfd));
3320 }
3321 else if ((ibfd->flags & DYNAMIC) == 0)
3322 {
3323 if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3324 bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
3325 }
3326
3327 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
3328 != previous_ibfd_e_flags)
3329 && previous_ibfd_e_flags != (unsigned long) -1)
3330 {
3331 (*_bfd_error_handler)
3332 (_("%s: linking little endian files with big endian files"),
3333 bfd_archive_filename (ibfd));
3334 error = TRUE;
3335 }
3336 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
3337
3338 if (error)
3339 {
3340 bfd_set_error (bfd_error_bad_value);
3341 return FALSE;
3342 }
3343
3344 return TRUE;
3345 }
3346 \f
3347 /* Set the right machine number. */
3348
3349 static bfd_boolean
3350 elf32_sparc_object_p (abfd)
3351 bfd *abfd;
3352 {
3353 /* Allocate our special target data. */
3354 struct elf32_sparc_obj_tdata *new_tdata;
3355 bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata);
3356 new_tdata = bfd_zalloc (abfd, amt);
3357 if (new_tdata == NULL)
3358 return FALSE;
3359 new_tdata->root = *abfd->tdata.elf_obj_data;
3360 abfd->tdata.any = new_tdata;
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 break; /* nothing to do */
3395 case bfd_mach_sparc_v8plus :
3396 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3397 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3398 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
3399 break;
3400 case bfd_mach_sparc_v8plusa :
3401 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3402 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3403 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
3404 break;
3405 case bfd_mach_sparc_v8plusb :
3406 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
3407 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
3408 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1
3409 | EF_SPARC_SUN_US3;
3410 break;
3411 case bfd_mach_sparc_sparclite_le :
3412 elf_elfheader (abfd)->e_machine = EM_SPARC;
3413 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
3414 break;
3415 default :
3416 abort ();
3417 break;
3418 }
3419 }
3420
3421 static enum elf_reloc_type_class
3422 elf32_sparc_reloc_type_class (rela)
3423 const Elf_Internal_Rela *rela;
3424 {
3425 switch ((int) ELF32_R_TYPE (rela->r_info))
3426 {
3427 case R_SPARC_RELATIVE:
3428 return reloc_class_relative;
3429 case R_SPARC_JMP_SLOT:
3430 return reloc_class_plt;
3431 case R_SPARC_COPY:
3432 return reloc_class_copy;
3433 default:
3434 return reloc_class_normal;
3435 }
3436 }
3437 \f
3438 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
3439 #define TARGET_BIG_NAME "elf32-sparc"
3440 #define ELF_ARCH bfd_arch_sparc
3441 #define ELF_MACHINE_CODE EM_SPARC
3442 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
3443 #define ELF_MAXPAGESIZE 0x10000
3444
3445 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
3446 #define bfd_elf32_bfd_link_hash_table_create \
3447 elf32_sparc_link_hash_table_create
3448 #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section
3449 #define bfd_elf32_new_section_hook elf32_sparc_new_section_hook
3450 #define elf_info_to_howto elf32_sparc_info_to_howto
3451 #define elf_backend_copy_indirect_symbol \
3452 elf32_sparc_copy_indirect_symbol
3453 #define elf_backend_create_dynamic_sections \
3454 elf32_sparc_create_dynamic_sections
3455 #define elf_backend_check_relocs elf32_sparc_check_relocs
3456 #define elf_backend_adjust_dynamic_symbol \
3457 elf32_sparc_adjust_dynamic_symbol
3458 #define elf_backend_size_dynamic_sections \
3459 elf32_sparc_size_dynamic_sections
3460 #define elf_backend_relocate_section elf32_sparc_relocate_section
3461 #define elf_backend_finish_dynamic_symbol \
3462 elf32_sparc_finish_dynamic_symbol
3463 #define elf_backend_finish_dynamic_sections \
3464 elf32_sparc_finish_dynamic_sections
3465 #define bfd_elf32_bfd_merge_private_bfd_data \
3466 elf32_sparc_merge_private_bfd_data
3467 #define bfd_elf32_mkobject elf32_sparc_mkobject
3468 #define elf_backend_object_p elf32_sparc_object_p
3469 #define elf_backend_final_write_processing \
3470 elf32_sparc_final_write_processing
3471 #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
3472 #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
3473 #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
3474
3475 #define elf_backend_can_gc_sections 1
3476 #define elf_backend_can_refcount 1
3477 #define elf_backend_want_got_plt 0
3478 #define elf_backend_plt_readonly 0
3479 #define elf_backend_want_plt_sym 1
3480 #define elf_backend_got_header_size 4
3481 #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE)
3482 #define elf_backend_rela_normal 1
3483
3484 #include "elf32-target.h"
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