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.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
26 #include "elf/sparc.h"
27 #include "opcode/sparc.h"
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 elf32_sparc_size_dynamic_sections
39 PARAMS ((bfd
*, struct bfd_link_info
*));
40 static bfd_boolean elf32_sparc_new_section_hook
41 PARAMS ((bfd
*, asection
*));
42 static bfd_boolean elf32_sparc_relax_section
43 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, bfd_boolean
*));
44 static bfd_boolean elf32_sparc_relocate_section
45 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
46 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
47 static bfd_boolean elf32_sparc_finish_dynamic_symbol
48 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
50 static bfd_boolean elf32_sparc_finish_dynamic_sections
51 PARAMS ((bfd
*, struct bfd_link_info
*));
52 static bfd_boolean elf32_sparc_merge_private_bfd_data
53 PARAMS ((bfd
*, bfd
*));
54 static bfd_boolean elf32_sparc_object_p
56 static void elf32_sparc_final_write_processing
57 PARAMS ((bfd
*, bfd_boolean
));
58 static enum elf_reloc_type_class elf32_sparc_reloc_type_class
59 PARAMS ((const Elf_Internal_Rela
*));
60 static asection
* elf32_sparc_gc_mark_hook
61 PARAMS ((asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
62 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
63 static bfd_boolean elf32_sparc_gc_sweep_hook
64 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
65 const Elf_Internal_Rela
*));
67 /* The relocation "howto" table. */
69 static bfd_reloc_status_type sparc_elf_notsupported_reloc
70 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
71 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
72 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
74 reloc_howto_type _bfd_sparc_elf_howto_table
[] =
76 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
77 HOWTO(R_SPARC_8
, 0,0, 8,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_8", FALSE
,0,0x000000ff,TRUE
),
78 HOWTO(R_SPARC_16
, 0,1,16,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_16", FALSE
,0,0x0000ffff,TRUE
),
79 HOWTO(R_SPARC_32
, 0,2,32,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_32", FALSE
,0,0xffffffff,TRUE
),
80 HOWTO(R_SPARC_DISP8
, 0,0, 8,TRUE
, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_DISP8", FALSE
,0,0x000000ff,TRUE
),
81 HOWTO(R_SPARC_DISP16
, 0,1,16,TRUE
, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_DISP16", FALSE
,0,0x0000ffff,TRUE
),
82 HOWTO(R_SPARC_DISP32
, 0,2,32,TRUE
, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_DISP32", FALSE
,0,0xffffffff,TRUE
),
83 HOWTO(R_SPARC_WDISP30
, 2,2,30,TRUE
, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_WDISP30", FALSE
,0,0x3fffffff,TRUE
),
84 HOWTO(R_SPARC_WDISP22
, 2,2,22,TRUE
, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_WDISP22", FALSE
,0,0x003fffff,TRUE
),
85 HOWTO(R_SPARC_HI22
, 10,2,22,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_HI22", FALSE
,0,0x003fffff,TRUE
),
86 HOWTO(R_SPARC_22
, 0,2,22,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_22", FALSE
,0,0x003fffff,TRUE
),
87 HOWTO(R_SPARC_13
, 0,2,13,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_13", FALSE
,0,0x00001fff,TRUE
),
88 HOWTO(R_SPARC_LO10
, 0,2,10,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_LO10", FALSE
,0,0x000003ff,TRUE
),
89 HOWTO(R_SPARC_GOT10
, 0,2,10,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_GOT10", FALSE
,0,0x000003ff,TRUE
),
90 HOWTO(R_SPARC_GOT13
, 0,2,13,FALSE
,0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_GOT13", FALSE
,0,0x00001fff,TRUE
),
91 HOWTO(R_SPARC_GOT22
, 10,2,22,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_GOT22", FALSE
,0,0x003fffff,TRUE
),
92 HOWTO(R_SPARC_PC10
, 0,2,10,TRUE
, 0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_PC10", FALSE
,0,0x000003ff,TRUE
),
93 HOWTO(R_SPARC_PC22
, 10,2,22,TRUE
, 0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_PC22", FALSE
,0,0x003fffff,TRUE
),
94 HOWTO(R_SPARC_WPLT30
, 2,2,30,TRUE
, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_WPLT30", FALSE
,0,0x3fffffff,TRUE
),
95 HOWTO(R_SPARC_COPY
, 0,0,00,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_COPY", FALSE
,0,0x00000000,TRUE
),
96 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
),
97 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
),
98 HOWTO(R_SPARC_RELATIVE
, 0,0,00,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_RELATIVE",FALSE
,0,0x00000000,TRUE
),
99 HOWTO(R_SPARC_UA32
, 0,2,32,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_UA32", FALSE
,0,0xffffffff,TRUE
),
100 HOWTO(R_SPARC_PLT32
, 0,0,00,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_PLT32", FALSE
,0,0xffffffff,TRUE
),
101 HOWTO(R_SPARC_HIPLT22
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_HIPLT22", FALSE
,0,0x00000000,TRUE
),
102 HOWTO(R_SPARC_LOPLT10
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_LOPLT10", FALSE
,0,0x00000000,TRUE
),
103 HOWTO(R_SPARC_PCPLT32
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_PCPLT32", FALSE
,0,0x00000000,TRUE
),
104 HOWTO(R_SPARC_PCPLT22
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_PCPLT22", FALSE
,0,0x00000000,TRUE
),
105 HOWTO(R_SPARC_PCPLT10
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_PCPLT10", FALSE
,0,0x00000000,TRUE
),
106 HOWTO(R_SPARC_10
, 0,2,10,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_10", FALSE
,0,0x000003ff,TRUE
),
107 HOWTO(R_SPARC_11
, 0,2,11,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_11", FALSE
,0,0x000007ff,TRUE
),
108 /* These are for sparc64 in a 64 bit environment.
109 Values need to be here because the table is indexed by reloc number. */
110 HOWTO(R_SPARC_64
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_64", FALSE
,0,0x00000000,TRUE
),
111 HOWTO(R_SPARC_OLO10
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_OLO10", FALSE
,0,0x00000000,TRUE
),
112 HOWTO(R_SPARC_HH22
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_HH22", FALSE
,0,0x00000000,TRUE
),
113 HOWTO(R_SPARC_HM10
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_HM10", FALSE
,0,0x00000000,TRUE
),
114 HOWTO(R_SPARC_LM22
, 0,0,00,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_LM22", FALSE
,0,0x00000000,TRUE
),
115 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
),
116 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
),
117 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
),
118 /* End sparc64 in 64 bit environment values.
119 The following are for sparc64 in a 32 bit environment. */
120 HOWTO(R_SPARC_WDISP16
, 2,2,16,TRUE
, 0,complain_overflow_signed
, sparc_elf_wdisp16_reloc
,"R_SPARC_WDISP16", FALSE
,0,0x00000000,TRUE
),
121 HOWTO(R_SPARC_WDISP19
, 2,2,19,TRUE
, 0,complain_overflow_signed
, bfd_elf_generic_reloc
, "R_SPARC_WDISP19", FALSE
,0,0x0007ffff,TRUE
),
122 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
),
123 HOWTO(R_SPARC_7
, 0,2, 7,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_7", FALSE
,0,0x0000007f,TRUE
),
124 HOWTO(R_SPARC_5
, 0,2, 5,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_5", FALSE
,0,0x0000001f,TRUE
),
125 HOWTO(R_SPARC_6
, 0,2, 6,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_6", FALSE
,0,0x0000003f,TRUE
),
126 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
127 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
128 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
129 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
130 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
131 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
132 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
133 HOWTO(R_SPARC_NONE
, 0,0, 0,FALSE
,0,complain_overflow_dont
, bfd_elf_generic_reloc
, "R_SPARC_NONE", FALSE
,0,0x00000000,TRUE
),
134 HOWTO(R_SPARC_UA64
, 0,0, 0,FALSE
,0,complain_overflow_dont
, sparc_elf_notsupported_reloc
, "R_SPARC_UA64", FALSE
,0,0x00000000,TRUE
),
135 HOWTO(R_SPARC_UA16
, 0,1,16,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_UA16", FALSE
,0,0x0000ffff,TRUE
),
136 HOWTO(R_SPARC_REV32
, 0,2,32,FALSE
,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
, "R_SPARC_REV32", FALSE
,0,0xffffffff,TRUE
),
138 static reloc_howto_type elf32_sparc_vtinherit_howto
=
139 HOWTO (R_SPARC_GNU_VTINHERIT
, 0,2,0,FALSE
,0,complain_overflow_dont
, NULL
, "R_SPARC_GNU_VTINHERIT", FALSE
,0, 0, FALSE
);
140 static reloc_howto_type elf32_sparc_vtentry_howto
=
141 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
);
143 struct elf_reloc_map
{
144 bfd_reloc_code_real_type bfd_reloc_val
;
145 unsigned char elf_reloc_val
;
148 static const struct elf_reloc_map sparc_reloc_map
[] =
150 { BFD_RELOC_NONE
, R_SPARC_NONE
, },
151 { BFD_RELOC_16
, R_SPARC_16
, },
152 { BFD_RELOC_16_PCREL
, R_SPARC_DISP16
},
153 { BFD_RELOC_8
, R_SPARC_8
},
154 { BFD_RELOC_8_PCREL
, R_SPARC_DISP8
},
155 { BFD_RELOC_CTOR
, R_SPARC_32
},
156 { BFD_RELOC_32
, R_SPARC_32
},
157 { BFD_RELOC_32_PCREL
, R_SPARC_DISP32
},
158 { BFD_RELOC_HI22
, R_SPARC_HI22
},
159 { BFD_RELOC_LO10
, R_SPARC_LO10
, },
160 { BFD_RELOC_32_PCREL_S2
, R_SPARC_WDISP30
},
161 { BFD_RELOC_SPARC_PLT32
, R_SPARC_PLT32
},
162 { BFD_RELOC_SPARC22
, R_SPARC_22
},
163 { BFD_RELOC_SPARC13
, R_SPARC_13
},
164 { BFD_RELOC_SPARC_GOT10
, R_SPARC_GOT10
},
165 { BFD_RELOC_SPARC_GOT13
, R_SPARC_GOT13
},
166 { BFD_RELOC_SPARC_GOT22
, R_SPARC_GOT22
},
167 { BFD_RELOC_SPARC_PC10
, R_SPARC_PC10
},
168 { BFD_RELOC_SPARC_PC22
, R_SPARC_PC22
},
169 { BFD_RELOC_SPARC_WPLT30
, R_SPARC_WPLT30
},
170 { BFD_RELOC_SPARC_COPY
, R_SPARC_COPY
},
171 { BFD_RELOC_SPARC_GLOB_DAT
, R_SPARC_GLOB_DAT
},
172 { BFD_RELOC_SPARC_JMP_SLOT
, R_SPARC_JMP_SLOT
},
173 { BFD_RELOC_SPARC_RELATIVE
, R_SPARC_RELATIVE
},
174 { BFD_RELOC_SPARC_WDISP22
, R_SPARC_WDISP22
},
175 { BFD_RELOC_SPARC_UA16
, R_SPARC_UA16
},
176 { BFD_RELOC_SPARC_UA32
, R_SPARC_UA32
},
177 { BFD_RELOC_SPARC_UA64
, R_SPARC_UA64
},
178 { BFD_RELOC_SPARC_10
, R_SPARC_10
},
179 { BFD_RELOC_SPARC_11
, R_SPARC_11
},
180 { BFD_RELOC_SPARC_64
, R_SPARC_64
},
181 { BFD_RELOC_SPARC_OLO10
, R_SPARC_OLO10
},
182 { BFD_RELOC_SPARC_HH22
, R_SPARC_HH22
},
183 { BFD_RELOC_SPARC_HM10
, R_SPARC_HM10
},
184 { BFD_RELOC_SPARC_LM22
, R_SPARC_LM22
},
185 { BFD_RELOC_SPARC_PC_HH22
, R_SPARC_PC_HH22
},
186 { BFD_RELOC_SPARC_PC_HM10
, R_SPARC_PC_HM10
},
187 { BFD_RELOC_SPARC_PC_LM22
, R_SPARC_PC_LM22
},
188 { BFD_RELOC_SPARC_WDISP16
, R_SPARC_WDISP16
},
189 { BFD_RELOC_SPARC_WDISP19
, R_SPARC_WDISP19
},
190 { BFD_RELOC_SPARC_7
, R_SPARC_7
},
191 { BFD_RELOC_SPARC_5
, R_SPARC_5
},
192 { BFD_RELOC_SPARC_6
, R_SPARC_6
},
193 { BFD_RELOC_SPARC_REV32
, R_SPARC_REV32
},
194 { BFD_RELOC_VTABLE_INHERIT
, R_SPARC_GNU_VTINHERIT
},
195 { BFD_RELOC_VTABLE_ENTRY
, R_SPARC_GNU_VTENTRY
},
198 static reloc_howto_type
*
199 elf32_sparc_reloc_type_lookup (abfd
, code
)
200 bfd
*abfd ATTRIBUTE_UNUSED
;
201 bfd_reloc_code_real_type code
;
207 case BFD_RELOC_VTABLE_INHERIT
:
208 return &elf32_sparc_vtinherit_howto
;
210 case BFD_RELOC_VTABLE_ENTRY
:
211 return &elf32_sparc_vtentry_howto
;
214 for (i
= 0; i
< sizeof (sparc_reloc_map
) / sizeof (struct elf_reloc_map
); i
++)
216 if (sparc_reloc_map
[i
].bfd_reloc_val
== code
)
217 return &_bfd_sparc_elf_howto_table
[(int) sparc_reloc_map
[i
].elf_reloc_val
];
220 bfd_set_error (bfd_error_bad_value
);
224 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
225 and elf64-sparc.c has its own copy. */
228 elf32_sparc_info_to_howto (abfd
, cache_ptr
, dst
)
229 bfd
*abfd ATTRIBUTE_UNUSED
;
231 Elf_Internal_Rela
*dst
;
233 switch (ELF32_R_TYPE(dst
->r_info
))
235 case R_SPARC_GNU_VTINHERIT
:
236 cache_ptr
->howto
= &elf32_sparc_vtinherit_howto
;
239 case R_SPARC_GNU_VTENTRY
:
240 cache_ptr
->howto
= &elf32_sparc_vtentry_howto
;
244 BFD_ASSERT (ELF32_R_TYPE(dst
->r_info
) < (unsigned int) R_SPARC_max_std
);
245 cache_ptr
->howto
= &_bfd_sparc_elf_howto_table
[ELF32_R_TYPE(dst
->r_info
)];
249 /* For unsupported relocs. */
251 static bfd_reloc_status_type
252 sparc_elf_notsupported_reloc (abfd
,
259 bfd
*abfd ATTRIBUTE_UNUSED
;
260 arelent
*reloc_entry ATTRIBUTE_UNUSED
;
261 asymbol
*symbol ATTRIBUTE_UNUSED
;
262 PTR data ATTRIBUTE_UNUSED
;
263 asection
*input_section ATTRIBUTE_UNUSED
;
264 bfd
*output_bfd ATTRIBUTE_UNUSED
;
265 char **error_message ATTRIBUTE_UNUSED
;
267 return bfd_reloc_notsupported
;
270 /* Handle the WDISP16 reloc. */
272 static bfd_reloc_status_type
273 sparc_elf_wdisp16_reloc (abfd
,
281 arelent
*reloc_entry
;
284 asection
*input_section
;
286 char **error_message ATTRIBUTE_UNUSED
;
291 if (output_bfd
!= (bfd
*) NULL
292 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
293 && (! reloc_entry
->howto
->partial_inplace
294 || reloc_entry
->addend
== 0))
296 reloc_entry
->address
+= input_section
->output_offset
;
300 if (output_bfd
!= NULL
)
301 return bfd_reloc_continue
;
303 if (reloc_entry
->address
> input_section
->_cooked_size
)
304 return bfd_reloc_outofrange
;
306 relocation
= (symbol
->value
307 + symbol
->section
->output_section
->vma
308 + symbol
->section
->output_offset
);
309 relocation
+= reloc_entry
->addend
;
310 relocation
-= (input_section
->output_section
->vma
311 + input_section
->output_offset
);
312 relocation
-= reloc_entry
->address
;
314 x
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
315 x
|= ((((relocation
>> 2) & 0xc000) << 6)
316 | ((relocation
>> 2) & 0x3fff));
317 bfd_put_32 (abfd
, x
, (bfd_byte
*) data
+ reloc_entry
->address
);
319 if ((bfd_signed_vma
) relocation
< - 0x40000
320 || (bfd_signed_vma
) relocation
> 0x3ffff)
321 return bfd_reloc_overflow
;
326 /* Functions for the SPARC ELF linker. */
328 /* The name of the dynamic interpreter. This is put in the .interp
331 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
333 /* The nop opcode we use. */
335 #define SPARC_NOP 0x01000000
337 /* The size in bytes of an entry in the procedure linkage table. */
339 #define PLT_ENTRY_SIZE 12
341 /* The first four entries in a procedure linkage table are reserved,
342 and the initial contents are unimportant (we zero them out).
343 Subsequent entries look like this. See the SVR4 ABI SPARC
344 supplement to see how this works. */
346 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
347 #define PLT_ENTRY_WORD0 0x03000000
348 /* b,a .plt0. We fill in the offset later. */
349 #define PLT_ENTRY_WORD1 0x30800000
351 #define PLT_ENTRY_WORD2 SPARC_NOP
353 /* Look through the relocs for a section during the first phase, and
354 allocate space in the global offset table or procedure linkage
358 elf32_sparc_check_relocs (abfd
, info
, sec
, relocs
)
360 struct bfd_link_info
*info
;
362 const Elf_Internal_Rela
*relocs
;
365 Elf_Internal_Shdr
*symtab_hdr
;
366 struct elf_link_hash_entry
**sym_hashes
;
367 bfd_vma
*local_got_offsets
;
368 const Elf_Internal_Rela
*rel
;
369 const Elf_Internal_Rela
*rel_end
;
374 if (info
->relocateable
)
377 dynobj
= elf_hash_table (info
)->dynobj
;
378 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
379 sym_hashes
= elf_sym_hashes (abfd
);
380 local_got_offsets
= elf_local_got_offsets (abfd
);
386 rel_end
= relocs
+ sec
->reloc_count
;
387 for (rel
= relocs
; rel
< rel_end
; rel
++)
389 unsigned long r_symndx
;
390 struct elf_link_hash_entry
*h
;
392 r_symndx
= ELF32_R_SYM (rel
->r_info
);
393 if (r_symndx
< symtab_hdr
->sh_info
)
396 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
398 switch (ELF32_R_TYPE (rel
->r_info
))
403 /* This symbol requires a global offset table entry. */
407 /* Create the .got section. */
408 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
409 if (! _bfd_elf_create_got_section (dynobj
, info
))
415 sgot
= bfd_get_section_by_name (dynobj
, ".got");
416 BFD_ASSERT (sgot
!= NULL
);
420 && (h
!= NULL
|| info
->shared
))
422 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
425 srelgot
= bfd_make_section (dynobj
, ".rela.got");
427 || ! bfd_set_section_flags (dynobj
, srelgot
,
434 || ! bfd_set_section_alignment (dynobj
, srelgot
, 2))
441 if (h
->got
.offset
!= (bfd_vma
) -1)
443 /* We have already allocated space in the .got. */
446 h
->got
.offset
= sgot
->_raw_size
;
448 /* Make sure this symbol is output as a dynamic symbol. */
449 if (h
->dynindx
== -1)
451 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
455 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
459 /* This is a global offset table entry for a local
461 if (local_got_offsets
== NULL
)
464 register unsigned int i
;
466 size
= symtab_hdr
->sh_info
;
467 size
*= sizeof (bfd_vma
);
468 local_got_offsets
= (bfd_vma
*) bfd_alloc (abfd
, size
);
469 if (local_got_offsets
== NULL
)
471 elf_local_got_offsets (abfd
) = local_got_offsets
;
472 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
473 local_got_offsets
[i
] = (bfd_vma
) -1;
475 if (local_got_offsets
[r_symndx
] != (bfd_vma
) -1)
477 /* We have already allocated space in the .got. */
480 local_got_offsets
[r_symndx
] = sgot
->_raw_size
;
484 /* If we are generating a shared object, we need to
485 output a R_SPARC_RELATIVE reloc so that the
486 dynamic linker can adjust this GOT entry. */
487 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
491 sgot
->_raw_size
+= 4;
493 /* If the .got section is more than 0x1000 bytes, we add
494 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
495 bit relocations have a greater chance of working. */
496 if (sgot
->_raw_size
>= 0x1000
497 && elf_hash_table (info
)->hgot
->root
.u
.def
.value
== 0)
498 elf_hash_table (info
)->hgot
->root
.u
.def
.value
= 0x1000;
504 /* This symbol requires a procedure linkage table entry. We
505 actually build the entry in adjust_dynamic_symbol,
506 because this might be a case of linking PIC code without
507 linking in any dynamic objects, in which case we don't
508 need to generate a procedure linkage table after all. */
512 /* The Solaris native assembler will generate a WPLT30
513 reloc for a local symbol if you assemble a call from
514 one section to another when using -K pic. We treat
516 if (ELF32_R_TYPE (rel
->r_info
) != R_SPARC_WPLT30
)
521 /* Make sure this symbol is output as a dynamic symbol. */
522 if (h
->dynindx
== -1)
524 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
528 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
530 if (ELF32_R_TYPE (rel
->r_info
) != R_SPARC_WPLT30
)
537 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
540 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
546 case R_SPARC_WDISP30
:
547 case R_SPARC_WDISP22
:
548 case R_SPARC_WDISP19
:
549 case R_SPARC_WDISP16
:
551 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
553 /* If we are linking with -Bsymbolic, we do not need to copy
554 a PC relative reloc against a global symbol which is
555 defined in an object we are including in the link (i.e.,
556 DEF_REGULAR is set). FIXME: At this point we have not
557 seen all the input files, so it is possible that
558 DEF_REGULAR is not set now but will be set later (it is
559 never cleared). This needs to be handled as in
563 && (h
->elf_link_hash_flags
564 & ELF_LINK_HASH_DEF_REGULAR
) != 0))
577 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
580 if (info
->shared
&& (sec
->flags
& SEC_ALLOC
))
582 /* When creating a shared object, we must copy these
583 relocs into the output file. We create a reloc
584 section in dynobj and make room for the reloc. */
589 name
= (bfd_elf_string_from_elf_section
591 elf_elfheader (abfd
)->e_shstrndx
,
592 elf_section_data (sec
)->rel_hdr
.sh_name
));
596 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
597 && strcmp (bfd_get_section_name (abfd
, sec
),
600 sreloc
= bfd_get_section_by_name (dynobj
, name
);
605 sreloc
= bfd_make_section (dynobj
, name
);
606 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
607 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
608 if ((sec
->flags
& SEC_ALLOC
) != 0)
609 flags
|= SEC_ALLOC
| SEC_LOAD
;
611 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
612 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
615 if (sec
->flags
& SEC_READONLY
)
616 info
->flags
|= DF_TEXTREL
;
619 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
624 case R_SPARC_GNU_VTINHERIT
:
625 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
629 case R_SPARC_GNU_VTENTRY
:
630 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
643 elf32_sparc_gc_mark_hook (sec
, info
, rel
, h
, sym
)
645 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
646 Elf_Internal_Rela
*rel
;
647 struct elf_link_hash_entry
*h
;
648 Elf_Internal_Sym
*sym
;
652 switch (ELF32_R_TYPE (rel
->r_info
))
654 case R_SPARC_GNU_VTINHERIT
:
655 case R_SPARC_GNU_VTENTRY
:
659 switch (h
->root
.type
)
661 case bfd_link_hash_defined
:
662 case bfd_link_hash_defweak
:
663 return h
->root
.u
.def
.section
;
665 case bfd_link_hash_common
:
666 return h
->root
.u
.c
.p
->section
;
674 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
679 /* Update the got entry reference counts for the section being removed. */
681 elf32_sparc_gc_sweep_hook (abfd
, info
, sec
, relocs
)
683 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
685 const Elf_Internal_Rela
*relocs
;
688 Elf_Internal_Shdr
*symtab_hdr
;
689 struct elf_link_hash_entry
**sym_hashes
;
690 bfd_signed_vma
*local_got_refcounts
;
691 const Elf_Internal_Rela
*rel
, *relend
;
692 unsigned long r_symndx
;
693 struct elf_link_hash_entry
*h
;
695 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
696 sym_hashes
= elf_sym_hashes (abfd
);
697 local_got_refcounts
= elf_local_got_refcounts (abfd
);
699 relend
= relocs
+ sec
->reloc_count
;
700 for (rel
= relocs
; rel
< relend
; rel
++)
701 switch (ELF32_R_TYPE (rel
->r_info
))
706 r_symndx
= ELF32_R_SYM (rel
->r_info
);
707 if (r_symndx
>= symtab_hdr
->sh_info
)
709 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
710 if (h
->got
.refcount
> 0)
715 if (local_got_refcounts
[r_symndx
] > 0)
716 local_got_refcounts
[r_symndx
]--;
721 case R_SPARC_HIPLT22
:
722 case R_SPARC_LOPLT10
:
723 case R_SPARC_PCPLT32
:
724 case R_SPARC_PCPLT10
:
725 r_symndx
= ELF32_R_SYM (rel
->r_info
);
726 if (r_symndx
>= symtab_hdr
->sh_info
)
728 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
729 if (h
->plt
.refcount
> 0)
741 /* Adjust a symbol defined by a dynamic object and referenced by a
742 regular object. The current definition is in some section of the
743 dynamic object, but we're not including those sections. We have to
744 change the definition to something the rest of the link can
748 elf32_sparc_adjust_dynamic_symbol (info
, h
)
749 struct bfd_link_info
*info
;
750 struct elf_link_hash_entry
*h
;
754 unsigned int power_of_two
;
756 dynobj
= elf_hash_table (info
)->dynobj
;
758 /* Make sure we know what is going on here. */
759 BFD_ASSERT (dynobj
!= NULL
760 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
761 || h
->weakdef
!= NULL
762 || ((h
->elf_link_hash_flags
763 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
764 && (h
->elf_link_hash_flags
765 & ELF_LINK_HASH_REF_REGULAR
) != 0
766 && (h
->elf_link_hash_flags
767 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
769 /* If this is a function, put it in the procedure linkage table. We
770 will fill in the contents of the procedure linkage table later
771 (although we could actually do it here). The STT_NOTYPE
772 condition is a hack specifically for the Oracle libraries
773 delivered for Solaris; for some inexplicable reason, they define
774 some of their functions as STT_NOTYPE when they really should be
776 if (h
->type
== STT_FUNC
777 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0
778 || (h
->type
== STT_NOTYPE
779 && (h
->root
.type
== bfd_link_hash_defined
780 || h
->root
.type
== bfd_link_hash_defweak
)
781 && (h
->root
.u
.def
.section
->flags
& SEC_CODE
) != 0))
783 if (! elf_hash_table (info
)->dynamic_sections_created
784 || ((!info
->shared
|| info
->symbolic
|| h
->dynindx
== -1)
785 && (h
->elf_link_hash_flags
786 & ELF_LINK_HASH_DEF_REGULAR
) != 0))
788 /* This case can occur if we saw a WPLT30 reloc in an input
789 file, but none of the input files were dynamic objects.
790 Or, when linking the main application or a -Bsymbolic
791 shared library against PIC code. Or when a global symbol
792 has been made private, e.g. via versioning.
794 In these cases we know what value the symbol will resolve
795 to, so we don't actually need to build a procedure linkage
796 table, and we can just do a WDISP30 reloc instead. */
798 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
802 s
= bfd_get_section_by_name (dynobj
, ".plt");
803 BFD_ASSERT (s
!= NULL
);
805 /* The first four entries in .plt are reserved. */
806 if (s
->_raw_size
== 0)
807 s
->_raw_size
= 4 * PLT_ENTRY_SIZE
;
809 /* The procedure linkage table has a maximum size. */
810 if (s
->_raw_size
>= 0x400000)
812 bfd_set_error (bfd_error_bad_value
);
816 /* If this symbol is not defined in a regular file, and we are
817 not generating a shared library, then set the symbol to this
818 location in the .plt. This is required to make function
819 pointers compare as equal between the normal executable and
820 the shared library. */
822 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
824 h
->root
.u
.def
.section
= s
;
825 h
->root
.u
.def
.value
= s
->_raw_size
;
828 h
->plt
.offset
= s
->_raw_size
;
830 /* Make room for this entry. */
831 s
->_raw_size
+= PLT_ENTRY_SIZE
;
833 /* We also need to make an entry in the .rela.plt section. */
835 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
836 BFD_ASSERT (s
!= NULL
);
837 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
842 /* If this is a weak symbol, and there is a real definition, the
843 processor independent code will have arranged for us to see the
844 real definition first, and we can just use the same value. */
845 if (h
->weakdef
!= NULL
)
847 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
848 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
849 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
850 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
854 /* This is a reference to a symbol defined by a dynamic object which
855 is not a function. */
857 /* If we are creating a shared library, we must presume that the
858 only references to the symbol are via the global offset table.
859 For such cases we need not do anything here; the relocations will
860 be handled correctly by relocate_section. */
864 /* If there are no references to this symbol that do not use the
865 GOT, we don't need to generate a copy reloc. */
866 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
869 /* We must allocate the symbol in our .dynbss section, which will
870 become part of the .bss section of the executable. There will be
871 an entry for this symbol in the .dynsym section. The dynamic
872 object will contain position independent code, so all references
873 from the dynamic object to this symbol will go through the global
874 offset table. The dynamic linker will use the .dynsym entry to
875 determine the address it must put in the global offset table, so
876 both the dynamic object and the regular object will refer to the
877 same memory location for the variable. */
879 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
880 BFD_ASSERT (s
!= NULL
);
882 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
883 to copy the initial value out of the dynamic object and into the
884 runtime process image. We need to remember the offset into the
885 .rel.bss section we are going to use. */
886 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
890 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
891 BFD_ASSERT (srel
!= NULL
);
892 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
893 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
896 /* We need to figure out the alignment required for this symbol. I
897 have no idea how ELF linkers handle this. */
898 power_of_two
= bfd_log2 (h
->size
);
899 if (power_of_two
> 3)
902 /* Apply the required alignment. */
903 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
904 (bfd_size_type
) (1 << power_of_two
));
905 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
907 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
911 /* Define the symbol as being at this point in the section. */
912 h
->root
.u
.def
.section
= s
;
913 h
->root
.u
.def
.value
= s
->_raw_size
;
915 /* Increment the section size to make room for the symbol. */
916 s
->_raw_size
+= h
->size
;
921 /* Set the sizes of the dynamic sections. */
924 elf32_sparc_size_dynamic_sections (output_bfd
, info
)
925 bfd
*output_bfd ATTRIBUTE_UNUSED
;
926 struct bfd_link_info
*info
;
932 dynobj
= elf_hash_table (info
)->dynobj
;
933 BFD_ASSERT (dynobj
!= NULL
);
935 if (elf_hash_table (info
)->dynamic_sections_created
)
937 /* Set the contents of the .interp section to the interpreter. */
940 s
= bfd_get_section_by_name (dynobj
, ".interp");
941 BFD_ASSERT (s
!= NULL
);
942 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
943 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
946 /* Make space for the trailing nop in .plt. */
947 s
= bfd_get_section_by_name (dynobj
, ".plt");
948 BFD_ASSERT (s
!= NULL
);
949 if (s
->_raw_size
> 0)
954 /* We may have created entries in the .rela.got section.
955 However, if we are not creating the dynamic sections, we will
956 not actually use these entries. Reset the size of .rela.got,
957 which will cause it to get stripped from the output file
959 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
964 /* The check_relocs and adjust_dynamic_symbol entry points have
965 determined the sizes of the various dynamic sections. Allocate
968 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
973 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
976 /* It's OK to base decisions on the section name, because none
977 of the dynobj section names depend upon the input files. */
978 name
= bfd_get_section_name (dynobj
, s
);
982 if (strncmp (name
, ".rela", 5) == 0)
984 if (s
->_raw_size
== 0)
986 /* If we don't need this section, strip it from the
987 output file. This is to handle .rela.bss and
988 .rel.plt. We must create it in
989 create_dynamic_sections, because it must be created
990 before the linker maps input sections to output
991 sections. The linker does that before
992 adjust_dynamic_symbol is called, and it is that
993 function which decides whether anything needs to go
994 into these sections. */
999 if (strcmp (name
, ".rela.plt") == 0)
1002 /* We use the reloc_count field as a counter if we need
1003 to copy relocs into the output file. */
1007 else if (strcmp (name
, ".plt") != 0
1008 && strcmp (name
, ".got") != 0)
1010 /* It's not one of our sections, so don't allocate space. */
1016 _bfd_strip_section_from_output (info
, s
);
1020 /* Allocate memory for the section contents. */
1021 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
1022 Unused entries should be reclaimed before the section's contents
1023 are written out, but at the moment this does not happen. Thus in
1024 order to prevent writing out garbage, we initialise the section's
1025 contents to zero. */
1026 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1027 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1031 if (elf_hash_table (info
)->dynamic_sections_created
)
1033 /* Add some entries to the .dynamic section. We fill in the
1034 values later, in elf32_sparc_finish_dynamic_sections, but we
1035 must add the entries now so that we get the correct size for
1036 the .dynamic section. The DT_DEBUG entry is filled in by the
1037 dynamic linker and used by the debugger. */
1038 #define add_dynamic_entry(TAG, VAL) \
1039 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1043 if (!add_dynamic_entry (DT_DEBUG
, 0))
1049 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1050 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
1051 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1052 || !add_dynamic_entry (DT_JMPREL
, 0))
1056 if (!add_dynamic_entry (DT_RELA
, 0)
1057 || !add_dynamic_entry (DT_RELASZ
, 0)
1058 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
1061 if (info
->flags
& DF_TEXTREL
)
1063 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1067 #undef add_dynamic_entry
1072 struct elf32_sparc_section_data
1074 struct bfd_elf_section_data elf
;
1075 unsigned int do_relax
;
1078 #define sec_do_relax(sec) \
1079 ((struct elf32_sparc_section_data *) (sec)->used_by_bfd)->do_relax
1082 elf32_sparc_new_section_hook (abfd
, sec
)
1086 struct elf32_sparc_section_data
*sdata
;
1087 bfd_size_type amt
= sizeof (*sdata
);
1089 sdata
= (struct elf32_sparc_section_data
*) bfd_zalloc (abfd
, amt
);
1092 sec
->used_by_bfd
= (PTR
) sdata
;
1094 return _bfd_elf_new_section_hook (abfd
, sec
);
1098 elf32_sparc_relax_section (abfd
, section
, link_info
, again
)
1099 bfd
*abfd ATTRIBUTE_UNUSED
;
1100 asection
*section ATTRIBUTE_UNUSED
;
1101 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
;
1105 sec_do_relax (section
) = 1;
1109 /* This is the condition under which finish_dynamic_symbol will be called
1110 from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol
1111 routine, we'll need to do something about initializing any .plt and .got
1112 entries in relocate_section. */
1113 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1115 && ((INFO)->shared \
1116 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1117 && ((H)->dynindx != -1 \
1118 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1120 /* Relocate a SPARC ELF section. */
1123 elf32_sparc_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1124 contents
, relocs
, local_syms
, local_sections
)
1126 struct bfd_link_info
*info
;
1128 asection
*input_section
;
1130 Elf_Internal_Rela
*relocs
;
1131 Elf_Internal_Sym
*local_syms
;
1132 asection
**local_sections
;
1135 Elf_Internal_Shdr
*symtab_hdr
;
1136 struct elf_link_hash_entry
**sym_hashes
;
1137 bfd_vma
*local_got_offsets
;
1142 Elf_Internal_Rela
*rel
;
1143 Elf_Internal_Rela
*relend
;
1145 if (info
->relocateable
)
1148 dynobj
= elf_hash_table (info
)->dynobj
;
1149 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1150 sym_hashes
= elf_sym_hashes (input_bfd
);
1151 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1153 if (elf_hash_table (info
)->hgot
== NULL
)
1156 got_base
= elf_hash_table (info
)->hgot
->root
.u
.def
.value
;
1163 relend
= relocs
+ input_section
->reloc_count
;
1164 for (; rel
< relend
; rel
++)
1167 reloc_howto_type
*howto
;
1168 unsigned long r_symndx
;
1169 struct elf_link_hash_entry
*h
;
1170 Elf_Internal_Sym
*sym
;
1172 bfd_vma relocation
, off
;
1173 bfd_reloc_status_type r
;
1174 bfd_boolean is_plt
= FALSE
;
1175 bfd_boolean unresolved_reloc
;
1177 r_type
= ELF32_R_TYPE (rel
->r_info
);
1179 if (r_type
== R_SPARC_GNU_VTINHERIT
1180 || r_type
== R_SPARC_GNU_VTENTRY
)
1183 if (r_type
< 0 || r_type
>= (int) R_SPARC_max_std
)
1185 bfd_set_error (bfd_error_bad_value
);
1188 howto
= _bfd_sparc_elf_howto_table
+ r_type
;
1190 /* This is a final link. */
1191 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1195 unresolved_reloc
= FALSE
;
1196 if (r_symndx
< symtab_hdr
->sh_info
)
1198 sym
= local_syms
+ r_symndx
;
1199 sec
= local_sections
[r_symndx
];
1200 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
1204 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1205 while (h
->root
.type
== bfd_link_hash_indirect
1206 || h
->root
.type
== bfd_link_hash_warning
)
1207 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1210 if (h
->root
.type
== bfd_link_hash_defined
1211 || h
->root
.type
== bfd_link_hash_defweak
)
1213 sec
= h
->root
.u
.def
.section
;
1214 if (sec
->output_section
== NULL
)
1215 /* Set a flag that will be cleared later if we find a
1216 relocation value for this symbol. output_section
1217 is typically NULL for symbols satisfied by a shared
1219 unresolved_reloc
= TRUE
;
1221 relocation
= (h
->root
.u
.def
.value
1222 + sec
->output_section
->vma
1223 + sec
->output_offset
);
1225 else if (h
->root
.type
== bfd_link_hash_undefweak
)
1227 else if (info
->shared
1228 && (!info
->symbolic
|| info
->allow_shlib_undefined
)
1229 && !info
->no_undefined
1230 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
1234 if (! ((*info
->callbacks
->undefined_symbol
)
1235 (info
, h
->root
.root
.string
, input_bfd
,
1236 input_section
, rel
->r_offset
,
1237 (!info
->shared
|| info
->no_undefined
1238 || ELF_ST_VISIBILITY (h
->other
)))))
1248 /* Relocation is to the entry for this symbol in the global
1252 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1253 BFD_ASSERT (sgot
!= NULL
);
1260 off
= h
->got
.offset
;
1261 BFD_ASSERT (off
!= (bfd_vma
) -1);
1262 dyn
= elf_hash_table (info
)->dynamic_sections_created
;
1264 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
, h
)
1268 || (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
))
1269 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1271 /* This is actually a static link, or it is a
1272 -Bsymbolic link and the symbol is defined
1273 locally, or the symbol was forced to be local
1274 because of a version file. We must initialize
1275 this entry in the global offset table. Since the
1276 offset must always be a multiple of 4, we use the
1277 least significant bit to record whether we have
1278 initialized it already.
1280 When doing a dynamic link, we create a .rela.got
1281 relocation entry to initialize the value. This
1282 is done in the finish_dynamic_symbol routine. */
1287 bfd_put_32 (output_bfd
, relocation
,
1288 sgot
->contents
+ off
);
1293 unresolved_reloc
= FALSE
;
1297 BFD_ASSERT (local_got_offsets
!= NULL
1298 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1300 off
= local_got_offsets
[r_symndx
];
1302 /* The offset must always be a multiple of 4. We use
1303 the least significant bit to record whether we have
1304 already processed this entry. */
1313 Elf_Internal_Rela outrel
;
1316 /* We need to generate a R_SPARC_RELATIVE reloc
1317 for the dynamic linker. */
1318 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1319 BFD_ASSERT (s
!= NULL
);
1321 outrel
.r_offset
= (sgot
->output_section
->vma
1322 + sgot
->output_offset
1324 outrel
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1325 outrel
.r_addend
= relocation
;
1328 loc
+= s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1329 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1332 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1333 local_got_offsets
[r_symndx
] |= 1;
1336 relocation
= sgot
->output_offset
+ off
- got_base
;
1340 if (h
== NULL
|| h
->plt
.offset
== (bfd_vma
) -1)
1342 r_type
= R_SPARC_32
;
1346 case R_SPARC_WPLT30
:
1347 /* Relocation is to the entry for this symbol in the
1348 procedure linkage table. */
1350 /* The Solaris native assembler will generate a WPLT30 reloc
1351 for a local symbol if you assemble a call from one
1352 section to another when using -K pic. We treat it as
1357 if (h
->plt
.offset
== (bfd_vma
) -1)
1359 /* We didn't make a PLT entry for this symbol. This
1360 happens when statically linking PIC code, or when
1361 using -Bsymbolic. */
1367 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1368 BFD_ASSERT (splt
!= NULL
);
1371 relocation
= (splt
->output_section
->vma
1372 + splt
->output_offset
1374 unresolved_reloc
= FALSE
;
1375 if (r_type
== R_SPARC_PLT32
)
1377 r_type
= R_SPARC_32
;
1386 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1390 case R_SPARC_DISP16
:
1391 case R_SPARC_DISP32
:
1392 case R_SPARC_WDISP30
:
1393 case R_SPARC_WDISP22
:
1394 case R_SPARC_WDISP19
:
1395 case R_SPARC_WDISP16
:
1398 && (h
->elf_link_hash_flags
1399 & ELF_LINK_HASH_DEF_REGULAR
) != 0))
1414 && (input_section
->flags
& SEC_ALLOC
))
1416 Elf_Internal_Rela outrel
;
1418 bfd_boolean skip
, relocate
= FALSE
;
1420 /* When generating a shared object, these relocations
1421 are copied into the output file to be resolved at run
1428 name
= (bfd_elf_string_from_elf_section
1430 elf_elfheader (input_bfd
)->e_shstrndx
,
1431 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1435 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1436 && strcmp (bfd_get_section_name (input_bfd
,
1440 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1441 BFD_ASSERT (sreloc
!= NULL
);
1447 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1449 if (outrel
.r_offset
== (bfd_vma
) -1)
1451 else if (outrel
.r_offset
== (bfd_vma
) -2)
1452 skip
= TRUE
, relocate
= TRUE
;
1453 outrel
.r_offset
+= (input_section
->output_section
->vma
1454 + input_section
->output_offset
);
1456 /* Optimize unaligned reloc usage now that we know where
1457 it finally resides. */
1461 if (outrel
.r_offset
& 1)
1462 r_type
= R_SPARC_UA16
;
1465 if (!(outrel
.r_offset
& 1))
1466 r_type
= R_SPARC_16
;
1469 if (outrel
.r_offset
& 3)
1470 r_type
= R_SPARC_UA32
;
1473 if (!(outrel
.r_offset
& 3))
1474 r_type
= R_SPARC_32
;
1477 case R_SPARC_DISP16
:
1478 case R_SPARC_DISP32
:
1479 /* If the symbol is not dynamic, we should not keep
1480 a dynamic relocation. But an .rela.* slot has been
1481 allocated for it, output R_SPARC_NONE.
1482 FIXME: Add code tracking needed dynamic relocs as
1484 if (h
->dynindx
== -1)
1485 skip
= TRUE
, relocate
= TRUE
;
1490 memset (&outrel
, 0, sizeof outrel
);
1491 /* h->dynindx may be -1 if the symbol was marked to
1493 else if (h
!= NULL
&& ! is_plt
1494 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1495 || (h
->elf_link_hash_flags
1496 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1498 BFD_ASSERT (h
->dynindx
!= -1);
1499 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1500 outrel
.r_addend
= rel
->r_addend
;
1504 if (r_type
== R_SPARC_32
)
1506 outrel
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1507 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1516 sec
= local_sections
[r_symndx
];
1519 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
1521 == bfd_link_hash_defweak
));
1522 sec
= h
->root
.u
.def
.section
;
1524 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
1526 else if (sec
== NULL
|| sec
->owner
== NULL
)
1528 bfd_set_error (bfd_error_bad_value
);
1535 osec
= sec
->output_section
;
1536 indx
= elf_section_data (osec
)->dynindx
;
1538 /* FIXME: we really should be able to link non-pic
1539 shared libraries. */
1543 (*_bfd_error_handler
)
1544 (_("%s: probably compiled without -fPIC?"),
1545 bfd_archive_filename (input_bfd
));
1546 bfd_set_error (bfd_error_bad_value
);
1551 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
1552 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1556 loc
= sreloc
->contents
;
1557 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1558 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1560 /* This reloc will be computed at runtime, so there's no
1561 need to do anything now. */
1571 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
1572 because such sections are not SEC_ALLOC and thus ld.so will
1573 not process them. */
1574 if (unresolved_reloc
1575 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
1576 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
1577 (*_bfd_error_handler
)
1578 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
1579 bfd_archive_filename (input_bfd
),
1580 bfd_get_section_name (input_bfd
, input_section
),
1581 (long) rel
->r_offset
,
1582 h
->root
.root
.string
);
1584 r
= bfd_reloc_continue
;
1585 if (r_type
== R_SPARC_WDISP16
)
1589 relocation
+= rel
->r_addend
;
1590 relocation
-= (input_section
->output_section
->vma
1591 + input_section
->output_offset
);
1592 relocation
-= rel
->r_offset
;
1594 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
1595 x
|= ((((relocation
>> 2) & 0xc000) << 6)
1596 | ((relocation
>> 2) & 0x3fff));
1597 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
1599 if ((bfd_signed_vma
) relocation
< - 0x40000
1600 || (bfd_signed_vma
) relocation
> 0x3ffff)
1601 r
= bfd_reloc_overflow
;
1605 else if (r_type
== R_SPARC_REV32
)
1609 relocation
= relocation
+ rel
->r_addend
;
1611 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
1613 bfd_putl32 (/*input_bfd,*/ x
, contents
+ rel
->r_offset
);
1616 else if ((r_type
== R_SPARC_WDISP30
|| r_type
== R_SPARC_WPLT30
)
1617 && sec_do_relax (input_section
)
1618 && rel
->r_offset
+ 4 < input_section
->_raw_size
)
1622 #define XCC (2 << 20)
1623 #define COND(x) (((x)&0xf)<<25)
1624 #define CONDA COND(0x8)
1625 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
1626 #define INSN_BA (F2(0,2) | CONDA)
1627 #define INSN_OR F3(2, 0x2, 0)
1628 #define INSN_NOP F2(0,4)
1632 /* If the instruction is a call with either:
1634 arithmetic instruction with rd == %o7
1635 where rs1 != %o7 and rs2 if it is register != %o7
1636 then we can optimize if the call destination is near
1637 by changing the call into a branch always. */
1638 x
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
1639 y
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
1640 if ((x
& OP(~0)) == OP(1) && (y
& OP(~0)) == OP(2))
1642 if (((y
& OP3(~0)) == OP3(0x3d) /* restore */
1643 || ((y
& OP3(0x28)) == 0 /* arithmetic */
1644 && (y
& RD(~0)) == RD(O7
)))
1645 && (y
& RS1(~0)) != RS1(O7
)
1647 || (y
& RS2(~0)) != RS2(O7
)))
1651 reloc
= relocation
+ rel
->r_addend
- rel
->r_offset
;
1652 reloc
-= (input_section
->output_section
->vma
1653 + input_section
->output_offset
);
1655 /* Ensure the reloc fits into simm22. */
1656 if ((reloc
& 3) == 0
1657 && ((reloc
& ~(bfd_vma
)0x7fffff) == 0
1658 || ((reloc
| 0x7fffff) == ~(bfd_vma
)0)))
1662 /* Check whether it fits into simm19 on v9. */
1663 if (((reloc
& 0x3c0000) == 0
1664 || (reloc
& 0x3c0000) == 0x3c0000)
1665 && (elf_elfheader (output_bfd
)->e_flags
& EF_SPARC_32PLUS
))
1666 x
= INSN_BPA
| (reloc
& 0x7ffff); /* ba,pt %xcc */
1668 x
= INSN_BA
| (reloc
& 0x3fffff); /* ba */
1669 bfd_put_32 (input_bfd
, x
, contents
+ rel
->r_offset
);
1671 if (rel
->r_offset
>= 4
1672 && (y
& (0xffffffff ^ RS1(~0)))
1673 == (INSN_OR
| RD(O7
) | RS2(G0
)))
1678 z
= bfd_get_32 (input_bfd
,
1679 contents
+ rel
->r_offset
- 4);
1680 if ((z
& (0xffffffff ^ RD(~0)))
1681 != (INSN_OR
| RS1(O7
) | RS2(G0
)))
1689 If call foo was replaced with ba, replace
1690 or %rN, %g0, %o7 with nop. */
1692 reg
= (y
& RS1(~0)) >> 14;
1693 if (reg
!= ((z
& RD(~0)) >> 25)
1694 || reg
== G0
|| reg
== O7
)
1697 bfd_put_32 (input_bfd
, (bfd_vma
) INSN_NOP
,
1698 contents
+ rel
->r_offset
+ 4);
1706 if (r
== bfd_reloc_continue
)
1707 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1708 contents
, rel
->r_offset
,
1709 relocation
, rel
->r_addend
);
1711 if (r
!= bfd_reloc_ok
)
1716 case bfd_reloc_outofrange
:
1718 case bfd_reloc_overflow
:
1723 name
= h
->root
.root
.string
;
1726 name
= bfd_elf_string_from_elf_section (input_bfd
,
1727 symtab_hdr
->sh_link
,
1732 name
= bfd_section_name (input_bfd
, sec
);
1734 if (! ((*info
->callbacks
->reloc_overflow
)
1735 (info
, name
, howto
->name
, (bfd_vma
) 0,
1736 input_bfd
, input_section
, rel
->r_offset
)))
1747 /* Finish up dynamic symbol handling. We set the contents of various
1748 dynamic sections here. */
1751 elf32_sparc_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1753 struct bfd_link_info
*info
;
1754 struct elf_link_hash_entry
*h
;
1755 Elf_Internal_Sym
*sym
;
1759 dynobj
= elf_hash_table (info
)->dynobj
;
1761 if (h
->plt
.offset
!= (bfd_vma
) -1)
1765 Elf_Internal_Rela rela
;
1768 /* This symbol has an entry in the procedure linkage table. Set
1771 BFD_ASSERT (h
->dynindx
!= -1);
1773 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1774 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1775 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
);
1777 /* Fill in the entry in the procedure linkage table. */
1778 bfd_put_32 (output_bfd
,
1779 PLT_ENTRY_WORD0
+ h
->plt
.offset
,
1780 splt
->contents
+ h
->plt
.offset
);
1781 bfd_put_32 (output_bfd
,
1783 + (((- (h
->plt
.offset
+ 4)) >> 2) & 0x3fffff)),
1784 splt
->contents
+ h
->plt
.offset
+ 4);
1785 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
1786 splt
->contents
+ h
->plt
.offset
+ 8);
1788 /* Fill in the entry in the .rela.plt section. */
1789 rela
.r_offset
= (splt
->output_section
->vma
1790 + splt
->output_offset
1792 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_JMP_SLOT
);
1794 loc
= srela
->contents
;
1795 loc
+= (h
->plt
.offset
/ PLT_ENTRY_SIZE
- 4) * sizeof (Elf32_External_Rela
);
1796 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1798 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1800 /* Mark the symbol as undefined, rather than as defined in
1801 the .plt section. Leave the value alone. */
1802 sym
->st_shndx
= SHN_UNDEF
;
1803 /* If the symbol is weak, we do need to clear the value.
1804 Otherwise, the PLT entry would provide a definition for
1805 the symbol even if the symbol wasn't defined anywhere,
1806 and so the symbol would never be NULL. */
1807 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR_NONWEAK
)
1813 if (h
->got
.offset
!= (bfd_vma
) -1)
1817 Elf_Internal_Rela rela
;
1820 /* This symbol has an entry in the global offset table. Set it
1823 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1824 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1825 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1827 rela
.r_offset
= (sgot
->output_section
->vma
1828 + sgot
->output_offset
1829 + (h
->got
.offset
&~ (bfd_vma
) 1));
1831 /* If this is a -Bsymbolic link, and the symbol is defined
1832 locally, we just want to emit a RELATIVE reloc. Likewise if
1833 the symbol was forced to be local because of a version file.
1834 The entry in the global offset table will already have been
1835 initialized in the relocate_section function. */
1837 && (info
->symbolic
|| h
->dynindx
== -1)
1838 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
1840 asection
*sec
= h
->root
.u
.def
.section
;
1841 rela
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1842 rela
.r_addend
= (h
->root
.u
.def
.value
1843 + sec
->output_section
->vma
1844 + sec
->output_offset
);
1848 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_GLOB_DAT
);
1852 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1853 sgot
->contents
+ (h
->got
.offset
&~ (bfd_vma
) 1));
1854 loc
= srela
->contents
;
1855 loc
+= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1856 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1859 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1862 Elf_Internal_Rela rela
;
1865 /* This symbols needs a copy reloc. Set it up. */
1867 BFD_ASSERT (h
->dynindx
!= -1);
1869 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1871 BFD_ASSERT (s
!= NULL
);
1873 rela
.r_offset
= (h
->root
.u
.def
.value
1874 + h
->root
.u
.def
.section
->output_section
->vma
1875 + h
->root
.u
.def
.section
->output_offset
);
1876 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_COPY
);
1878 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1879 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1882 /* Mark some specially defined symbols as absolute. */
1883 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1884 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
1885 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
1886 sym
->st_shndx
= SHN_ABS
;
1891 /* Finish up the dynamic sections. */
1894 elf32_sparc_finish_dynamic_sections (output_bfd
, info
)
1896 struct bfd_link_info
*info
;
1902 dynobj
= elf_hash_table (info
)->dynobj
;
1904 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1906 if (elf_hash_table (info
)->dynamic_sections_created
)
1909 Elf32_External_Dyn
*dyncon
, *dynconend
;
1911 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1912 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
1914 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1915 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
1916 for (; dyncon
< dynconend
; dyncon
++)
1918 Elf_Internal_Dyn dyn
;
1922 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1926 case DT_PLTGOT
: name
= ".plt"; size
= FALSE
; break;
1927 case DT_PLTRELSZ
: name
= ".rela.plt"; size
= TRUE
; break;
1928 case DT_JMPREL
: name
= ".rela.plt"; size
= FALSE
; break;
1929 default: name
= NULL
; size
= FALSE
; break;
1936 s
= bfd_get_section_by_name (output_bfd
, name
);
1942 dyn
.d_un
.d_ptr
= s
->vma
;
1945 if (s
->_cooked_size
!= 0)
1946 dyn
.d_un
.d_val
= s
->_cooked_size
;
1948 dyn
.d_un
.d_val
= s
->_raw_size
;
1951 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1955 /* Clear the first four entries in the procedure linkage table,
1956 and put a nop in the last four bytes. */
1957 if (splt
->_raw_size
> 0)
1959 memset (splt
->contents
, 0, 4 * PLT_ENTRY_SIZE
);
1960 bfd_put_32 (output_bfd
, (bfd_vma
) SPARC_NOP
,
1961 splt
->contents
+ splt
->_raw_size
- 4);
1964 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
1968 /* Set the first entry in the global offset table to the address of
1969 the dynamic section. */
1970 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1971 BFD_ASSERT (sgot
!= NULL
);
1972 if (sgot
->_raw_size
> 0)
1975 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1977 bfd_put_32 (output_bfd
,
1978 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1982 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1987 /* Functions for dealing with the e_flags field.
1989 We don't define set_private_flags or copy_private_bfd_data because
1990 the only currently defined values are based on the bfd mach number,
1991 so we use the latter instead and defer setting e_flags until the
1992 file is written out. */
1994 /* Merge backend specific data from an object file to the output
1995 object file when linking. */
1998 elf32_sparc_merge_private_bfd_data (ibfd
, obfd
)
2003 /* FIXME: This should not be static. */
2004 static unsigned long previous_ibfd_e_flags
= (unsigned long) -1;
2006 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2007 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2012 if (bfd_get_mach (ibfd
) >= bfd_mach_sparc_v9
)
2015 (*_bfd_error_handler
)
2016 (_("%s: compiled for a 64 bit system and target is 32 bit"),
2017 bfd_archive_filename (ibfd
));
2019 else if ((ibfd
->flags
& DYNAMIC
) == 0)
2021 if (bfd_get_mach (obfd
) < bfd_get_mach (ibfd
))
2022 bfd_set_arch_mach (obfd
, bfd_arch_sparc
, bfd_get_mach (ibfd
));
2025 if (((elf_elfheader (ibfd
)->e_flags
& EF_SPARC_LEDATA
)
2026 != previous_ibfd_e_flags
)
2027 && previous_ibfd_e_flags
!= (unsigned long) -1)
2029 (*_bfd_error_handler
)
2030 (_("%s: linking little endian files with big endian files"),
2031 bfd_archive_filename (ibfd
));
2034 previous_ibfd_e_flags
= elf_elfheader (ibfd
)->e_flags
& EF_SPARC_LEDATA
;
2038 bfd_set_error (bfd_error_bad_value
);
2045 /* Set the right machine number. */
2048 elf32_sparc_object_p (abfd
)
2051 if (elf_elfheader (abfd
)->e_machine
== EM_SPARC32PLUS
)
2053 if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US3
)
2054 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
,
2055 bfd_mach_sparc_v8plusb
);
2056 else if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_SUN_US1
)
2057 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
,
2058 bfd_mach_sparc_v8plusa
);
2059 else if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_32PLUS
)
2060 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
,
2061 bfd_mach_sparc_v8plus
);
2065 else if (elf_elfheader (abfd
)->e_flags
& EF_SPARC_LEDATA
)
2066 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
,
2067 bfd_mach_sparc_sparclite_le
);
2069 return bfd_default_set_arch_mach (abfd
, bfd_arch_sparc
, bfd_mach_sparc
);
2072 /* The final processing done just before writing out the object file.
2073 We need to set the e_machine field appropriately. */
2076 elf32_sparc_final_write_processing (abfd
, linker
)
2078 bfd_boolean linker ATTRIBUTE_UNUSED
;
2080 switch (bfd_get_mach (abfd
))
2082 case bfd_mach_sparc
:
2083 break; /* nothing to do */
2084 case bfd_mach_sparc_v8plus
:
2085 elf_elfheader (abfd
)->e_machine
= EM_SPARC32PLUS
;
2086 elf_elfheader (abfd
)->e_flags
&=~ EF_SPARC_32PLUS_MASK
;
2087 elf_elfheader (abfd
)->e_flags
|= EF_SPARC_32PLUS
;
2089 case bfd_mach_sparc_v8plusa
:
2090 elf_elfheader (abfd
)->e_machine
= EM_SPARC32PLUS
;
2091 elf_elfheader (abfd
)->e_flags
&=~ EF_SPARC_32PLUS_MASK
;
2092 elf_elfheader (abfd
)->e_flags
|= EF_SPARC_32PLUS
| EF_SPARC_SUN_US1
;
2094 case bfd_mach_sparc_v8plusb
:
2095 elf_elfheader (abfd
)->e_machine
= EM_SPARC32PLUS
;
2096 elf_elfheader (abfd
)->e_flags
&=~ EF_SPARC_32PLUS_MASK
;
2097 elf_elfheader (abfd
)->e_flags
|= EF_SPARC_32PLUS
| EF_SPARC_SUN_US1
2100 case bfd_mach_sparc_sparclite_le
:
2101 elf_elfheader (abfd
)->e_machine
= EM_SPARC
;
2102 elf_elfheader (abfd
)->e_flags
|= EF_SPARC_LEDATA
;
2110 static enum elf_reloc_type_class
2111 elf32_sparc_reloc_type_class (rela
)
2112 const Elf_Internal_Rela
*rela
;
2114 switch ((int) ELF32_R_TYPE (rela
->r_info
))
2116 case R_SPARC_RELATIVE
:
2117 return reloc_class_relative
;
2118 case R_SPARC_JMP_SLOT
:
2119 return reloc_class_plt
;
2121 return reloc_class_copy
;
2123 return reloc_class_normal
;
2127 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
2128 #define TARGET_BIG_NAME "elf32-sparc"
2129 #define ELF_ARCH bfd_arch_sparc
2130 #define ELF_MACHINE_CODE EM_SPARC
2131 #define ELF_MACHINE_ALT1 EM_SPARC32PLUS
2132 #define ELF_MAXPAGESIZE 0x10000
2134 #define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
2135 #define bfd_elf32_bfd_relax_section elf32_sparc_relax_section
2136 #define elf_info_to_howto elf32_sparc_info_to_howto
2137 #define elf_backend_create_dynamic_sections \
2138 _bfd_elf_create_dynamic_sections
2139 #define elf_backend_check_relocs elf32_sparc_check_relocs
2140 #define elf_backend_adjust_dynamic_symbol \
2141 elf32_sparc_adjust_dynamic_symbol
2142 #define elf_backend_size_dynamic_sections \
2143 elf32_sparc_size_dynamic_sections
2144 #define elf_backend_relocate_section elf32_sparc_relocate_section
2145 #define elf_backend_finish_dynamic_symbol \
2146 elf32_sparc_finish_dynamic_symbol
2147 #define elf_backend_finish_dynamic_sections \
2148 elf32_sparc_finish_dynamic_sections
2149 #define bfd_elf32_bfd_merge_private_bfd_data \
2150 elf32_sparc_merge_private_bfd_data
2151 #define elf_backend_object_p elf32_sparc_object_p
2152 #define elf_backend_final_write_processing \
2153 elf32_sparc_final_write_processing
2154 #define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
2155 #define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
2156 #define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
2158 #define elf_backend_can_gc_sections 1
2159 #define elf_backend_want_got_plt 0
2160 #define elf_backend_plt_readonly 0
2161 #define elf_backend_want_plt_sym 1
2162 #define elf_backend_got_header_size 4
2163 #define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE)
2164 #define elf_backend_rela_normal 1
2166 #include "elf32-target.h"