Commit | Line | Data |
---|---|---|
b3c0fc57 | 1 | /* MIPS-specific support for 32-bit ELF |
9950f925 | 2 | Copyright 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc. |
6b4b4d17 | 3 | |
b3c0fc57 ILT |
4 | Most of the information added by Ian Lance Taylor, Cygnus Support, |
5 | <ian@cygnus.com>. | |
6 | ||
6b4b4d17 JK |
7 | This file is part of BFD, the Binary File Descriptor library. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
3fe22b98 | 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
6b4b4d17 | 22 | |
5b3b9ff6 ILT |
23 | /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly |
24 | different MIPS ELF from other targets. This matters when linking. | |
25 | This file supports both, switching at runtime. */ | |
26 | ||
6b4b4d17 JK |
27 | #include "bfd.h" |
28 | #include "sysdep.h" | |
29 | #include "libbfd.h" | |
6e07e54f ILT |
30 | #include "bfdlink.h" |
31 | #include "genlink.h" | |
6ab826bd | 32 | #include "elf-bfd.h" |
b3c0fc57 ILT |
33 | #include "elf/mips.h" |
34 | ||
6e07e54f ILT |
35 | /* Get the ECOFF swapping routines. */ |
36 | #include "coff/sym.h" | |
37 | #include "coff/symconst.h" | |
38 | #include "coff/internal.h" | |
39 | #include "coff/ecoff.h" | |
40 | #include "coff/mips.h" | |
41 | #define ECOFF_32 | |
42 | #include "ecoffswap.h" | |
43 | ||
e4f4813f ILT |
44 | static bfd_reloc_status_type mips32_64bit_reloc |
45 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
16fe8950 | 46 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup |
aac6b32f ILT |
47 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
48 | static void mips_info_to_howto_rel | |
49 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); | |
53787b23 ILT |
50 | static void bfd_mips_elf32_swap_gptab_in |
51 | PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); | |
52 | static void bfd_mips_elf32_swap_gptab_out | |
53 | PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); | |
aac6b32f | 54 | static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *)); |
00176555 | 55 | static boolean mips_elf32_object_p PARAMS ((bfd *)); |
5b3b9ff6 ILT |
56 | static boolean mips_elf_create_procedure_table |
57 | PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *, | |
58 | struct ecoff_debug_info *)); | |
59 | static int mips_elf_additional_program_headers PARAMS ((bfd *)); | |
60 | static boolean mips_elf_modify_segment_map PARAMS ((bfd *)); | |
fe4ff515 | 61 | static INLINE int elf_mips_isa PARAMS ((flagword)); |
d1bf45aa | 62 | static boolean mips_elf32_section_from_shdr |
aac6b32f | 63 | PARAMS ((bfd *, Elf32_Internal_Shdr *, char *)); |
00176555 | 64 | static boolean mips_elf32_section_processing |
aac6b32f | 65 | PARAMS ((bfd *, Elf32_Internal_Shdr *)); |
a2546fce ILT |
66 | static boolean mips_elf_is_local_label |
67 | PARAMS ((bfd *, asymbol *)); | |
aac6b32f ILT |
68 | static struct bfd_hash_entry *mips_elf_link_hash_newfunc |
69 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
70 | static struct bfd_link_hash_table *mips_elf_link_hash_table_create | |
71 | PARAMS ((bfd *)); | |
72 | static int gptab_compare PARAMS ((const void *, const void *)); | |
73 | static boolean mips_elf_final_link | |
74 | PARAMS ((bfd *, struct bfd_link_info *)); | |
75 | static void mips_elf_relocate_hi16 | |
76 | PARAMS ((bfd *, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, | |
77 | bfd_vma)); | |
5b3b9ff6 ILT |
78 | static void mips_elf_relocate_got_local |
79 | PARAMS ((bfd *, bfd *, asection *, Elf_Internal_Rela *, | |
80 | Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
81 | static void mips_elf_relocate_global_got | |
82 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); | |
e4f4813f ILT |
83 | static bfd_reloc_status_type mips16_jump_reloc |
84 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
5b3b9ff6 ILT |
85 | static boolean mips_elf_adjust_dynindx |
86 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
aac6b32f ILT |
87 | static boolean mips_elf_relocate_section |
88 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
82b1edf7 | 89 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
e4f4813f ILT |
90 | static boolean mips_elf_link_output_symbol_hook |
91 | PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *, | |
92 | asection *)); | |
53787b23 ILT |
93 | static boolean mips_elf_create_dynamic_sections |
94 | PARAMS ((bfd *, struct bfd_link_info *)); | |
95 | static boolean mips_elf_create_compact_rel_section | |
96 | PARAMS ((bfd *, struct bfd_link_info *)); | |
97 | static boolean mips_elf_create_got_section | |
98 | PARAMS ((bfd *, struct bfd_link_info *)); | |
99 | static boolean mips_elf_check_relocs | |
100 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
101 | const Elf_Internal_Rela *)); | |
102 | static boolean mips_elf_adjust_dynamic_symbol | |
103 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
e900e695 ILT |
104 | static boolean mips_elf_always_size_sections |
105 | PARAMS ((bfd *, struct bfd_link_info *)); | |
53787b23 ILT |
106 | static boolean mips_elf_size_dynamic_sections |
107 | PARAMS ((bfd *, struct bfd_link_info *)); | |
108 | static boolean mips_elf_finish_dynamic_symbol | |
109 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
110 | Elf_Internal_Sym *)); | |
111 | static boolean mips_elf_finish_dynamic_sections | |
112 | PARAMS ((bfd *, struct bfd_link_info *)); | |
aac6b32f ILT |
113 | static boolean mips_elf_add_symbol_hook |
114 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
115 | const char **, flagword *, asection **, bfd_vma *)); | |
5b3b9ff6 | 116 | static bfd_reloc_status_type mips_elf_final_gp |
abec70b9 | 117 | PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); |
53787b23 ILT |
118 | static bfd_byte *elf32_mips_get_relocated_section_contents |
119 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, | |
120 | bfd_byte *, boolean, asymbol **)); | |
5b3b9ff6 ILT |
121 | |
122 | /* This is true for Irix 5 executables, false for normal MIPS ELF ABI | |
123 | executables. FIXME: At the moment, we default to always generating | |
124 | Irix 5 executables. */ | |
125 | ||
126 | #define SGI_COMPAT(abfd) (1) | |
127 | ||
128 | /* This structure is used to hold .got information when linking. It | |
129 | is stored in the tdata field of the bfd_elf_section_data structure. */ | |
130 | ||
131 | struct mips_got_info | |
132 | { | |
133 | /* The symbol index of the first global .got symbol. */ | |
134 | unsigned long global_gotsym; | |
135 | /* The number of local .got entries. */ | |
136 | unsigned int local_gotno; | |
137 | }; | |
138 | ||
139 | /* The number of local .got entries we reserve. */ | |
140 | #define MIPS_RESERVED_GOTNO (2) | |
141 | ||
142 | /* Instructions which appear in a stub. For some reason the stub is | |
143 | slightly different on an SGI system. */ | |
144 | #define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000) | |
145 | #define STUB_LW(abfd) \ | |
146 | (SGI_COMPAT (abfd) \ | |
147 | ? 0x8f998010 /* lw t9,0x8010(gp) */ \ | |
148 | : 0x8f998000) /* lw t9,0x8000(gp) */ | |
149 | #define STUB_MOVE 0x03e07825 /* move t7,ra */ | |
150 | #define STUB_JALR 0x0320f809 /* jal t9 */ | |
151 | #define STUB_LI16 0x34180000 /* ori t8,zero,0 */ | |
152 | #define MIPS_FUNCTION_STUB_SIZE (16) | |
153 | ||
154 | /* Names of sections which appear in the .dynsym section in an Irix 5 | |
155 | executable. */ | |
156 | ||
157 | static const char * const mips_elf_dynsym_sec_names[] = | |
158 | { | |
159 | ".text", | |
160 | ".init", | |
161 | ".fini", | |
162 | ".data", | |
163 | ".rodata", | |
164 | ".sdata", | |
165 | ".sbss", | |
166 | ".bss", | |
167 | NULL | |
168 | }; | |
169 | ||
170 | #define SIZEOF_MIPS_DYNSYM_SECNAMES \ | |
171 | (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0]) | |
172 | ||
173 | /* The number of entries in mips_elf_dynsym_sec_names which go in the | |
174 | text segment. */ | |
175 | ||
176 | #define MIPS_TEXT_DYNSYM_SECNO (3) | |
177 | ||
178 | /* The names of the runtime procedure table symbols used on Irix 5. */ | |
179 | ||
180 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
181 | { | |
182 | "_procedure_table", | |
183 | "_procedure_string_table", | |
184 | "_procedure_table_size", | |
185 | NULL | |
186 | }; | |
187 | ||
188 | /* These structures are used to generate the .compact_rel section on | |
189 | Irix 5. */ | |
190 | ||
191 | typedef struct | |
192 | { | |
193 | unsigned long id1; /* Always one? */ | |
194 | unsigned long num; /* Number of compact relocation entries. */ | |
195 | unsigned long id2; /* Always two? */ | |
196 | unsigned long offset; /* The file offset of the first relocation. */ | |
197 | unsigned long reserved0; /* Zero? */ | |
198 | unsigned long reserved1; /* Zero? */ | |
199 | } Elf32_compact_rel; | |
200 | ||
201 | typedef struct | |
202 | { | |
203 | bfd_byte id1[4]; | |
204 | bfd_byte num[4]; | |
205 | bfd_byte id2[4]; | |
206 | bfd_byte offset[4]; | |
207 | bfd_byte reserved0[4]; | |
208 | bfd_byte reserved1[4]; | |
209 | } Elf32_External_compact_rel; | |
210 | ||
211 | typedef struct | |
212 | { | |
053baeb1 ILT |
213 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ |
214 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
215 | unsigned int dist2to : 8; | |
216 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
5b3b9ff6 ILT |
217 | unsigned long konst; /* KONST field. See below. */ |
218 | unsigned long vaddr; /* VADDR to be relocated. */ | |
219 | } Elf32_crinfo; | |
220 | ||
221 | typedef struct | |
222 | { | |
053baeb1 ILT |
223 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ |
224 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
225 | unsigned int dist2to : 8; | |
226 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
5b3b9ff6 ILT |
227 | unsigned long konst; /* KONST field. See below. */ |
228 | } Elf32_crinfo2; | |
229 | ||
230 | typedef struct | |
231 | { | |
232 | bfd_byte info[4]; | |
233 | bfd_byte konst[4]; | |
234 | bfd_byte vaddr[4]; | |
235 | } Elf32_External_crinfo; | |
236 | ||
237 | typedef struct | |
238 | { | |
239 | bfd_byte info[4]; | |
240 | bfd_byte konst[4]; | |
241 | } Elf32_External_crinfo2; | |
242 | ||
053baeb1 ILT |
243 | /* These are the constants used to swap the bitfields in a crinfo. */ |
244 | ||
245 | #define CRINFO_CTYPE (0x1) | |
246 | #define CRINFO_CTYPE_SH (31) | |
247 | #define CRINFO_RTYPE (0xf) | |
248 | #define CRINFO_RTYPE_SH (27) | |
249 | #define CRINFO_DIST2TO (0xff) | |
250 | #define CRINFO_DIST2TO_SH (19) | |
251 | #define CRINFO_RELVADDR (0x7ffff) | |
252 | #define CRINFO_RELVADDR_SH (0) | |
253 | ||
5b3b9ff6 ILT |
254 | /* A compact relocation info has long (3 words) or short (2 words) |
255 | formats. A short format doesn't have VADDR field and relvaddr | |
256 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
257 | #define CRF_MIPS_LONG 1 | |
258 | #define CRF_MIPS_SHORT 0 | |
259 | ||
260 | /* There are 4 types of compact relocation at least. The value KONST | |
261 | has different meaning for each type: | |
262 | ||
263 | (type) (konst) | |
264 | CT_MIPS_REL32 Address in data | |
265 | CT_MIPS_WORD Address in word (XXX) | |
266 | CT_MIPS_GPHI_LO GP - vaddr | |
267 | CT_MIPS_JMPAD Address to jump | |
268 | */ | |
269 | ||
270 | #define CRT_MIPS_REL32 0xa | |
271 | #define CRT_MIPS_WORD 0xb | |
272 | #define CRT_MIPS_GPHI_LO 0xc | |
273 | #define CRT_MIPS_JMPAD 0xd | |
274 | ||
053baeb1 ILT |
275 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) |
276 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
277 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
278 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
b3c0fc57 | 279 | |
53787b23 ILT |
280 | static void bfd_elf32_swap_compact_rel_out |
281 | PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *)); | |
282 | static void bfd_elf32_swap_crinfo_out | |
283 | PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *)); | |
284 | ||
b3c0fc57 ILT |
285 | #define USE_REL 1 /* MIPS uses REL relocations instead of RELA */ |
286 | ||
287 | enum reloc_type | |
288 | { | |
289 | R_MIPS_NONE = 0, | |
290 | R_MIPS_16, R_MIPS_32, | |
291 | R_MIPS_REL32, R_MIPS_26, | |
292 | R_MIPS_HI16, R_MIPS_LO16, | |
293 | R_MIPS_GPREL16, R_MIPS_LITERAL, | |
294 | R_MIPS_GOT16, R_MIPS_PC16, | |
295 | R_MIPS_CALL16, R_MIPS_GPREL32, | |
6a5848cd ILT |
296 | /* The remaining relocs are defined on Irix, although they are not |
297 | in the MIPS ELF ABI. */ | |
298 | R_MIPS_UNUSED1, R_MIPS_UNUSED2, | |
299 | R_MIPS_UNUSED3, | |
300 | R_MIPS_SHIFT5, R_MIPS_SHIFT6, | |
301 | R_MIPS_64, R_MIPS_GOT_DISP, | |
302 | R_MIPS_GOT_PAGE, R_MIPS_GOT_OFST, | |
303 | R_MIPS_GOT_HI16, R_MIPS_GOT_LO16, | |
304 | R_MIPS_SUB, R_MIPS_INSERT_A, | |
305 | R_MIPS_INSERT_B, R_MIPS_DELETE, | |
306 | R_MIPS_HIGHER, R_MIPS_HIGHEST, | |
307 | R_MIPS_CALL_HI16, R_MIPS_CALL_LO16, | |
e4f4813f ILT |
308 | R_MIPS_max, |
309 | /* This reloc is used for the mips16. */ | |
310 | R_MIPS16_26 = 100 | |
b3c0fc57 ILT |
311 | }; |
312 | ||
313 | static reloc_howto_type elf_mips_howto_table[] = | |
314 | { | |
315 | /* No relocation. */ | |
316 | HOWTO (R_MIPS_NONE, /* type */ | |
317 | 0, /* rightshift */ | |
318 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
319 | 0, /* bitsize */ | |
320 | false, /* pc_relative */ | |
321 | 0, /* bitpos */ | |
322 | complain_overflow_dont, /* complain_on_overflow */ | |
323 | bfd_elf_generic_reloc, /* special_function */ | |
324 | "R_MIPS_NONE", /* name */ | |
325 | false, /* partial_inplace */ | |
326 | 0, /* src_mask */ | |
327 | 0, /* dst_mask */ | |
328 | false), /* pcrel_offset */ | |
329 | ||
330 | /* 16 bit relocation. */ | |
331 | HOWTO (R_MIPS_16, /* type */ | |
332 | 0, /* rightshift */ | |
333 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
334 | 16, /* bitsize */ | |
335 | false, /* pc_relative */ | |
336 | 0, /* bitpos */ | |
337 | complain_overflow_bitfield, /* complain_on_overflow */ | |
338 | bfd_elf_generic_reloc, /* special_function */ | |
339 | "R_MIPS_16", /* name */ | |
340 | true, /* partial_inplace */ | |
341 | 0xffff, /* src_mask */ | |
342 | 0xffff, /* dst_mask */ | |
343 | false), /* pcrel_offset */ | |
344 | ||
345 | /* 32 bit relocation. */ | |
346 | HOWTO (R_MIPS_32, /* type */ | |
347 | 0, /* rightshift */ | |
348 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
349 | 32, /* bitsize */ | |
350 | false, /* pc_relative */ | |
351 | 0, /* bitpos */ | |
352 | complain_overflow_bitfield, /* complain_on_overflow */ | |
353 | bfd_elf_generic_reloc, /* special_function */ | |
354 | "R_MIPS_32", /* name */ | |
355 | true, /* partial_inplace */ | |
356 | 0xffffffff, /* src_mask */ | |
357 | 0xffffffff, /* dst_mask */ | |
358 | false), /* pcrel_offset */ | |
359 | ||
360 | /* 32 bit symbol relative relocation. */ | |
361 | HOWTO (R_MIPS_REL32, /* type */ | |
362 | 0, /* rightshift */ | |
363 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 32, /* bitsize */ | |
365 | false, /* pc_relative */ | |
366 | 0, /* bitpos */ | |
367 | complain_overflow_bitfield, /* complain_on_overflow */ | |
368 | bfd_elf_generic_reloc, /* special_function */ | |
369 | "R_MIPS_REL32", /* name */ | |
370 | true, /* partial_inplace */ | |
371 | 0xffffffff, /* src_mask */ | |
372 | 0xffffffff, /* dst_mask */ | |
373 | false), /* pcrel_offset */ | |
374 | ||
375 | /* 26 bit branch address. */ | |
376 | HOWTO (R_MIPS_26, /* type */ | |
377 | 2, /* rightshift */ | |
378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
379 | 26, /* bitsize */ | |
380 | false, /* pc_relative */ | |
381 | 0, /* bitpos */ | |
6e07e54f ILT |
382 | complain_overflow_dont, /* complain_on_overflow */ |
383 | /* This needs complex overflow | |
384 | detection, because the upper four | |
385 | bits must match the PC. */ | |
b3c0fc57 ILT |
386 | bfd_elf_generic_reloc, /* special_function */ |
387 | "R_MIPS_26", /* name */ | |
388 | true, /* partial_inplace */ | |
389 | 0x3ffffff, /* src_mask */ | |
390 | 0x3ffffff, /* dst_mask */ | |
391 | false), /* pcrel_offset */ | |
392 | ||
393 | /* High 16 bits of symbol value. */ | |
394 | HOWTO (R_MIPS_HI16, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 16, /* bitsize */ | |
398 | false, /* pc_relative */ | |
399 | 0, /* bitpos */ | |
400 | complain_overflow_dont, /* complain_on_overflow */ | |
bc05732b | 401 | _bfd_mips_elf_hi16_reloc, /* special_function */ |
b3c0fc57 ILT |
402 | "R_MIPS_HI16", /* name */ |
403 | true, /* partial_inplace */ | |
404 | 0xffff, /* src_mask */ | |
405 | 0xffff, /* dst_mask */ | |
406 | false), /* pcrel_offset */ | |
407 | ||
408 | /* Low 16 bits of symbol value. */ | |
409 | HOWTO (R_MIPS_LO16, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 16, /* bitsize */ | |
413 | false, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_dont, /* complain_on_overflow */ | |
bc05732b | 416 | _bfd_mips_elf_lo16_reloc, /* special_function */ |
b3c0fc57 ILT |
417 | "R_MIPS_LO16", /* name */ |
418 | true, /* partial_inplace */ | |
419 | 0xffff, /* src_mask */ | |
420 | 0xffff, /* dst_mask */ | |
421 | false), /* pcrel_offset */ | |
422 | ||
423 | /* GP relative reference. */ | |
424 | HOWTO (R_MIPS_GPREL16, /* type */ | |
425 | 0, /* rightshift */ | |
426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
427 | 16, /* bitsize */ | |
428 | false, /* pc_relative */ | |
429 | 0, /* bitpos */ | |
430 | complain_overflow_signed, /* complain_on_overflow */ | |
bc05732b | 431 | _bfd_mips_elf_gprel16_reloc, /* special_function */ |
b3c0fc57 ILT |
432 | "R_MIPS_GPREL16", /* name */ |
433 | true, /* partial_inplace */ | |
434 | 0xffff, /* src_mask */ | |
435 | 0xffff, /* dst_mask */ | |
436 | false), /* pcrel_offset */ | |
437 | ||
438 | /* Reference to literal section. */ | |
439 | HOWTO (R_MIPS_LITERAL, /* type */ | |
440 | 0, /* rightshift */ | |
441 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
442 | 16, /* bitsize */ | |
443 | false, /* pc_relative */ | |
444 | 0, /* bitpos */ | |
445 | complain_overflow_signed, /* complain_on_overflow */ | |
bc05732b | 446 | _bfd_mips_elf_gprel16_reloc, /* special_function */ |
b3c0fc57 ILT |
447 | "R_MIPS_LITERAL", /* name */ |
448 | true, /* partial_inplace */ | |
449 | 0xffff, /* src_mask */ | |
450 | 0xffff, /* dst_mask */ | |
451 | false), /* pcrel_offset */ | |
452 | ||
453 | /* Reference to global offset table. */ | |
b3c0fc57 ILT |
454 | HOWTO (R_MIPS_GOT16, /* type */ |
455 | 0, /* rightshift */ | |
456 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
457 | 16, /* bitsize */ | |
458 | false, /* pc_relative */ | |
459 | 0, /* bitpos */ | |
460 | complain_overflow_signed, /* complain_on_overflow */ | |
bc05732b | 461 | _bfd_mips_elf_got16_reloc, /* special_function */ |
b3c0fc57 ILT |
462 | "R_MIPS_GOT16", /* name */ |
463 | false, /* partial_inplace */ | |
464 | 0, /* src_mask */ | |
465 | 0xffff, /* dst_mask */ | |
466 | false), /* pcrel_offset */ | |
467 | ||
468 | /* 16 bit PC relative reference. */ | |
469 | HOWTO (R_MIPS_PC16, /* type */ | |
470 | 0, /* rightshift */ | |
471 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
472 | 16, /* bitsize */ | |
473 | true, /* pc_relative */ | |
474 | 0, /* bitpos */ | |
475 | complain_overflow_signed, /* complain_on_overflow */ | |
476 | bfd_elf_generic_reloc, /* special_function */ | |
477 | "R_MIPS_PC16", /* name */ | |
478 | true, /* partial_inplace */ | |
479 | 0xffff, /* src_mask */ | |
480 | 0xffff, /* dst_mask */ | |
481 | false), /* pcrel_offset */ | |
482 | ||
483 | /* 16 bit call through global offset table. */ | |
484 | /* FIXME: This is not handled correctly. */ | |
485 | HOWTO (R_MIPS_CALL16, /* type */ | |
486 | 0, /* rightshift */ | |
487 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
488 | 16, /* bitsize */ | |
489 | false, /* pc_relative */ | |
490 | 0, /* bitpos */ | |
491 | complain_overflow_signed, /* complain_on_overflow */ | |
492 | bfd_elf_generic_reloc, /* special_function */ | |
493 | "R_MIPS_CALL16", /* name */ | |
494 | false, /* partial_inplace */ | |
495 | 0, /* src_mask */ | |
496 | 0xffff, /* dst_mask */ | |
497 | false), /* pcrel_offset */ | |
498 | ||
499 | /* 32 bit GP relative reference. */ | |
b3c0fc57 ILT |
500 | HOWTO (R_MIPS_GPREL32, /* type */ |
501 | 0, /* rightshift */ | |
502 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 32, /* bitsize */ | |
504 | false, /* pc_relative */ | |
505 | 0, /* bitpos */ | |
506 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc05732b | 507 | _bfd_mips_elf_gprel32_reloc, /* special_function */ |
b3c0fc57 ILT |
508 | "R_MIPS_GPREL32", /* name */ |
509 | true, /* partial_inplace */ | |
510 | 0xffffffff, /* src_mask */ | |
511 | 0xffffffff, /* dst_mask */ | |
6a5848cd ILT |
512 | false), /* pcrel_offset */ |
513 | ||
514 | /* The remaining relocs are defined on Irix 5, although they are | |
515 | not defined by the ABI. */ | |
516 | { 13 }, | |
517 | { 14 }, | |
518 | { 15 }, | |
519 | ||
520 | /* A 5 bit shift field. */ | |
521 | HOWTO (R_MIPS_SHIFT5, /* type */ | |
522 | 0, /* rightshift */ | |
523 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
524 | 5, /* bitsize */ | |
525 | false, /* pc_relative */ | |
526 | 6, /* bitpos */ | |
527 | complain_overflow_bitfield, /* complain_on_overflow */ | |
528 | bfd_elf_generic_reloc, /* special_function */ | |
529 | "R_MIPS_SHIFT5", /* name */ | |
530 | true, /* partial_inplace */ | |
531 | 0x000007c0, /* src_mask */ | |
532 | 0x000007c0, /* dst_mask */ | |
533 | false), /* pcrel_offset */ | |
534 | ||
535 | /* A 6 bit shift field. */ | |
536 | /* FIXME: This is not handled correctly; a special function is | |
537 | needed to put the most significant bit in the right place. */ | |
538 | HOWTO (R_MIPS_SHIFT6, /* type */ | |
539 | 0, /* rightshift */ | |
540 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
541 | 6, /* bitsize */ | |
542 | false, /* pc_relative */ | |
543 | 6, /* bitpos */ | |
544 | complain_overflow_bitfield, /* complain_on_overflow */ | |
545 | bfd_elf_generic_reloc, /* special_function */ | |
546 | "R_MIPS_SHIFT6", /* name */ | |
547 | true, /* partial_inplace */ | |
548 | 0x000007c4, /* src_mask */ | |
549 | 0x000007c4, /* dst_mask */ | |
550 | false), /* pcrel_offset */ | |
551 | ||
e4f4813f ILT |
552 | /* A 64 bit relocation. This is used in 32 bit ELF when addresses |
553 | are 64 bits long; the upper 32 bits are simply a sign extension. | |
554 | The fields of the howto should be the same as for R_MIPS_32, | |
555 | other than the type, name, and special_function. */ | |
556 | HOWTO (R_MIPS_64, /* type */ | |
557 | 0, /* rightshift */ | |
558 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
559 | 32, /* bitsize */ | |
560 | false, /* pc_relative */ | |
561 | 0, /* bitpos */ | |
562 | complain_overflow_bitfield, /* complain_on_overflow */ | |
563 | mips32_64bit_reloc, /* special_function */ | |
564 | "R_MIPS_64", /* name */ | |
565 | true, /* partial_inplace */ | |
566 | 0xffffffff, /* src_mask */ | |
567 | 0xffffffff, /* dst_mask */ | |
568 | false), /* pcrel_offset */ | |
6a5848cd ILT |
569 | |
570 | /* Displacement in the global offset table. */ | |
571 | /* FIXME: Not handled correctly. */ | |
572 | HOWTO (R_MIPS_GOT_DISP, /* type */ | |
573 | 0, /* rightshift */ | |
574 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 16, /* bitsize */ | |
576 | false, /* pc_relative */ | |
577 | 0, /* bitpos */ | |
578 | complain_overflow_bitfield, /* complain_on_overflow */ | |
579 | bfd_elf_generic_reloc, /* special_function */ | |
580 | "R_MIPS_GOT_DISP", /* name */ | |
581 | true, /* partial_inplace */ | |
582 | 0x0000ffff, /* src_mask */ | |
583 | 0x0000ffff, /* dst_mask */ | |
584 | false), /* pcrel_offset */ | |
585 | ||
586 | /* Displacement to page pointer in the global offset table. */ | |
587 | /* FIXME: Not handled correctly. */ | |
588 | HOWTO (R_MIPS_GOT_PAGE, /* type */ | |
589 | 0, /* rightshift */ | |
590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 16, /* bitsize */ | |
592 | false, /* pc_relative */ | |
593 | 0, /* bitpos */ | |
594 | complain_overflow_bitfield, /* complain_on_overflow */ | |
595 | bfd_elf_generic_reloc, /* special_function */ | |
596 | "R_MIPS_GOT_PAGE", /* name */ | |
597 | true, /* partial_inplace */ | |
598 | 0x0000ffff, /* src_mask */ | |
599 | 0x0000ffff, /* dst_mask */ | |
600 | false), /* pcrel_offset */ | |
601 | ||
602 | /* Offset from page pointer in the global offset table. */ | |
603 | /* FIXME: Not handled correctly. */ | |
604 | HOWTO (R_MIPS_GOT_OFST, /* type */ | |
605 | 0, /* rightshift */ | |
606 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
607 | 16, /* bitsize */ | |
608 | false, /* pc_relative */ | |
609 | 0, /* bitpos */ | |
610 | complain_overflow_bitfield, /* complain_on_overflow */ | |
611 | bfd_elf_generic_reloc, /* special_function */ | |
612 | "R_MIPS_GOT_OFST", /* name */ | |
613 | true, /* partial_inplace */ | |
614 | 0x0000ffff, /* src_mask */ | |
615 | 0x0000ffff, /* dst_mask */ | |
616 | false), /* pcrel_offset */ | |
617 | ||
618 | /* High 16 bits of displacement in global offset table. */ | |
619 | /* FIXME: Not handled correctly. */ | |
620 | HOWTO (R_MIPS_GOT_HI16, /* type */ | |
621 | 0, /* rightshift */ | |
622 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
623 | 16, /* bitsize */ | |
624 | false, /* pc_relative */ | |
625 | 0, /* bitpos */ | |
626 | complain_overflow_dont, /* complain_on_overflow */ | |
627 | bfd_elf_generic_reloc, /* special_function */ | |
628 | "R_MIPS_GOT_HI16", /* name */ | |
629 | true, /* partial_inplace */ | |
630 | 0x0000ffff, /* src_mask */ | |
631 | 0x0000ffff, /* dst_mask */ | |
632 | false), /* pcrel_offset */ | |
633 | ||
634 | /* Low 16 bits of displacement in global offset table. */ | |
635 | /* FIXME: Not handled correctly. */ | |
636 | HOWTO (R_MIPS_GOT_LO16, /* type */ | |
637 | 0, /* rightshift */ | |
638 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
639 | 16, /* bitsize */ | |
640 | false, /* pc_relative */ | |
641 | 0, /* bitpos */ | |
642 | complain_overflow_dont, /* complain_on_overflow */ | |
643 | bfd_elf_generic_reloc, /* special_function */ | |
644 | "R_MIPS_GOT_LO16", /* name */ | |
645 | true, /* partial_inplace */ | |
646 | 0x0000ffff, /* src_mask */ | |
647 | 0x0000ffff, /* dst_mask */ | |
648 | false), /* pcrel_offset */ | |
649 | ||
650 | /* 64 bit subtraction. Presumably not used in 32 bit ELF. */ | |
651 | { R_MIPS_SUB }, | |
652 | ||
653 | /* Used to cause the linker to insert and delete instructions? */ | |
654 | { R_MIPS_INSERT_A }, | |
655 | { R_MIPS_INSERT_B }, | |
656 | { R_MIPS_DELETE }, | |
657 | ||
658 | /* Get the higher values of a 64 bit addend. Presumably not used in | |
659 | 32 bit ELF. */ | |
660 | { R_MIPS_HIGHER }, | |
661 | { R_MIPS_HIGHEST }, | |
662 | ||
663 | /* High 16 bits of displacement in global offset table. */ | |
664 | /* FIXME: Not handled correctly. */ | |
665 | HOWTO (R_MIPS_CALL_HI16, /* type */ | |
666 | 0, /* rightshift */ | |
667 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
668 | 16, /* bitsize */ | |
669 | false, /* pc_relative */ | |
670 | 0, /* bitpos */ | |
671 | complain_overflow_dont, /* complain_on_overflow */ | |
672 | bfd_elf_generic_reloc, /* special_function */ | |
673 | "R_MIPS_CALL_HI16", /* name */ | |
674 | true, /* partial_inplace */ | |
675 | 0x0000ffff, /* src_mask */ | |
676 | 0x0000ffff, /* dst_mask */ | |
677 | false), /* pcrel_offset */ | |
678 | ||
679 | /* Low 16 bits of displacement in global offset table. */ | |
680 | /* FIXME: Not handled correctly. */ | |
681 | HOWTO (R_MIPS_CALL_LO16, /* type */ | |
682 | 0, /* rightshift */ | |
683 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
684 | 16, /* bitsize */ | |
685 | false, /* pc_relative */ | |
686 | 0, /* bitpos */ | |
687 | complain_overflow_dont, /* complain_on_overflow */ | |
688 | bfd_elf_generic_reloc, /* special_function */ | |
689 | "R_MIPS_CALL_LO16", /* name */ | |
690 | true, /* partial_inplace */ | |
691 | 0x0000ffff, /* src_mask */ | |
692 | 0x0000ffff, /* dst_mask */ | |
b3c0fc57 ILT |
693 | false) /* pcrel_offset */ |
694 | }; | |
695 | ||
e4f4813f ILT |
696 | /* The reloc used for the mips16 jump instruction. */ |
697 | static reloc_howto_type elf_mips16_jump_howto = | |
698 | HOWTO (R_MIPS16_26, /* type */ | |
699 | 2, /* rightshift */ | |
700 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
701 | 26, /* bitsize */ | |
702 | false, /* pc_relative */ | |
703 | 0, /* bitpos */ | |
704 | complain_overflow_dont, /* complain_on_overflow */ | |
705 | /* This needs complex overflow | |
706 | detection, because the upper four | |
707 | bits must match the PC. */ | |
708 | mips16_jump_reloc, /* special_function */ | |
709 | "R_MIPS16_26", /* name */ | |
710 | true, /* partial_inplace */ | |
711 | 0x3ffffff, /* src_mask */ | |
712 | 0x3ffffff, /* dst_mask */ | |
713 | false); /* pcrel_offset */ | |
714 | ||
b3c0fc57 ILT |
715 | /* Do a R_MIPS_HI16 relocation. This has to be done in combination |
716 | with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to | |
717 | the HI16. Here we just save the information we need; we do the | |
718 | actual relocation when we see the LO16. MIPS ELF requires that the | |
abec70b9 ILT |
719 | LO16 immediately follow the HI16. As a GNU extension, we permit an |
720 | arbitrary number of HI16 relocs to be associated with a single LO16 | |
721 | reloc. This extension permits gcc to output the HI and LO relocs | |
722 | itself. */ | |
b3c0fc57 | 723 | |
abec70b9 ILT |
724 | struct mips_hi16 |
725 | { | |
726 | struct mips_hi16 *next; | |
727 | bfd_byte *addr; | |
728 | bfd_vma addend; | |
729 | }; | |
730 | ||
731 | /* FIXME: This should not be a static variable. */ | |
732 | ||
733 | static struct mips_hi16 *mips_hi16_list; | |
b3c0fc57 | 734 | |
bc05732b ILT |
735 | bfd_reloc_status_type |
736 | _bfd_mips_elf_hi16_reloc (abfd, | |
b3c0fc57 ILT |
737 | reloc_entry, |
738 | symbol, | |
739 | data, | |
740 | input_section, | |
6e07e54f ILT |
741 | output_bfd, |
742 | error_message) | |
b3c0fc57 ILT |
743 | bfd *abfd; |
744 | arelent *reloc_entry; | |
745 | asymbol *symbol; | |
746 | PTR data; | |
747 | asection *input_section; | |
748 | bfd *output_bfd; | |
6e07e54f | 749 | char **error_message; |
b3c0fc57 ILT |
750 | { |
751 | bfd_reloc_status_type ret; | |
752 | bfd_vma relocation; | |
abec70b9 | 753 | struct mips_hi16 *n; |
b3c0fc57 | 754 | |
b3c0fc57 ILT |
755 | /* If we're relocating, and this an external symbol, we don't want |
756 | to change anything. */ | |
757 | if (output_bfd != (bfd *) NULL | |
758 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
759 | && reloc_entry->addend == 0) | |
760 | { | |
761 | reloc_entry->address += input_section->output_offset; | |
762 | return bfd_reloc_ok; | |
763 | } | |
764 | ||
5b3b9ff6 ILT |
765 | ret = bfd_reloc_ok; |
766 | ||
6e07e54f | 767 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
5b3b9ff6 ILT |
768 | { |
769 | boolean relocateable; | |
abec70b9 | 770 | bfd_vma gp; |
6e07e54f | 771 | |
5b3b9ff6 ILT |
772 | if (ret == bfd_reloc_undefined) |
773 | abort (); | |
b3c0fc57 | 774 | |
5b3b9ff6 ILT |
775 | if (output_bfd != NULL) |
776 | relocateable = true; | |
777 | else | |
778 | { | |
779 | relocateable = false; | |
780 | output_bfd = symbol->section->output_section->owner; | |
781 | } | |
782 | ||
783 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, | |
abec70b9 | 784 | error_message, &gp); |
5b3b9ff6 ILT |
785 | if (ret != bfd_reloc_ok) |
786 | return ret; | |
787 | ||
abec70b9 | 788 | relocation = gp - reloc_entry->address; |
5b3b9ff6 | 789 | } |
b3c0fc57 | 790 | else |
5b3b9ff6 ILT |
791 | { |
792 | if (bfd_is_und_section (symbol->section) | |
793 | && output_bfd == (bfd *) NULL) | |
794 | ret = bfd_reloc_undefined; | |
795 | ||
796 | if (bfd_is_com_section (symbol->section)) | |
797 | relocation = 0; | |
798 | else | |
799 | relocation = symbol->value; | |
800 | } | |
b3c0fc57 ILT |
801 | |
802 | relocation += symbol->section->output_section->vma; | |
803 | relocation += symbol->section->output_offset; | |
804 | relocation += reloc_entry->addend; | |
805 | ||
806 | if (reloc_entry->address > input_section->_cooked_size) | |
807 | return bfd_reloc_outofrange; | |
808 | ||
809 | /* Save the information, and let LO16 do the actual relocation. */ | |
abec70b9 ILT |
810 | n = (struct mips_hi16 *) bfd_malloc (sizeof *n); |
811 | if (n == NULL) | |
812 | return bfd_reloc_outofrange; | |
813 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
814 | n->addend = relocation; | |
815 | n->next = mips_hi16_list; | |
816 | mips_hi16_list = n; | |
b3c0fc57 ILT |
817 | |
818 | if (output_bfd != (bfd *) NULL) | |
819 | reloc_entry->address += input_section->output_offset; | |
820 | ||
821 | return ret; | |
822 | } | |
823 | ||
824 | /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit | |
825 | inplace relocation; this function exists in order to do the | |
826 | R_MIPS_HI16 relocation described above. */ | |
827 | ||
bc05732b ILT |
828 | bfd_reloc_status_type |
829 | _bfd_mips_elf_lo16_reloc (abfd, | |
b3c0fc57 ILT |
830 | reloc_entry, |
831 | symbol, | |
832 | data, | |
833 | input_section, | |
6e07e54f ILT |
834 | output_bfd, |
835 | error_message) | |
b3c0fc57 ILT |
836 | bfd *abfd; |
837 | arelent *reloc_entry; | |
838 | asymbol *symbol; | |
839 | PTR data; | |
840 | asection *input_section; | |
841 | bfd *output_bfd; | |
6e07e54f | 842 | char **error_message; |
b3c0fc57 | 843 | { |
5b3b9ff6 | 844 | arelent gp_disp_relent; |
b3c0fc57 | 845 | |
abec70b9 | 846 | if (mips_hi16_list != NULL) |
b3c0fc57 | 847 | { |
abec70b9 ILT |
848 | struct mips_hi16 *l; |
849 | ||
850 | l = mips_hi16_list; | |
851 | while (l != NULL) | |
5b3b9ff6 | 852 | { |
abec70b9 ILT |
853 | unsigned long insn; |
854 | unsigned long val; | |
855 | unsigned long vallo; | |
856 | struct mips_hi16 *next; | |
857 | ||
858 | /* Do the HI16 relocation. Note that we actually don't need | |
859 | to know anything about the LO16 itself, except where to | |
860 | find the low 16 bits of the addend needed by the LO16. */ | |
861 | insn = bfd_get_32 (abfd, l->addr); | |
862 | vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address) | |
863 | & 0xffff); | |
864 | val = ((insn & 0xffff) << 16) + vallo; | |
865 | val += l->addend; | |
866 | ||
867 | /* The low order 16 bits are always treated as a signed | |
868 | value. Therefore, a negative value in the low order bits | |
869 | requires an adjustment in the high order bits. We need | |
870 | to make this adjustment in two ways: once for the bits we | |
871 | took from the data, and once for the bits we are putting | |
872 | back in to the data. */ | |
873 | if ((vallo & 0x8000) != 0) | |
874 | val -= 0x10000; | |
875 | if ((val & 0x8000) != 0) | |
876 | val += 0x10000; | |
877 | ||
878 | insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff); | |
879 | bfd_put_32 (abfd, insn, l->addr); | |
880 | ||
881 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
882 | { | |
883 | gp_disp_relent = *reloc_entry; | |
884 | reloc_entry = &gp_disp_relent; | |
885 | reloc_entry->addend = l->addend; | |
886 | } | |
887 | ||
888 | next = l->next; | |
889 | free (l); | |
890 | l = next; | |
5b3b9ff6 | 891 | } |
abec70b9 ILT |
892 | |
893 | mips_hi16_list = NULL; | |
5b3b9ff6 ILT |
894 | } |
895 | else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) | |
896 | { | |
897 | bfd_reloc_status_type ret; | |
abec70b9 | 898 | bfd_vma gp, relocation; |
5b3b9ff6 ILT |
899 | |
900 | /* FIXME: Does this case ever occur? */ | |
901 | ||
abec70b9 | 902 | ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp); |
5b3b9ff6 ILT |
903 | if (ret != bfd_reloc_ok) |
904 | return ret; | |
905 | ||
abec70b9 | 906 | relocation = gp - reloc_entry->address; |
5b3b9ff6 ILT |
907 | relocation += symbol->section->output_section->vma; |
908 | relocation += symbol->section->output_offset; | |
909 | relocation += reloc_entry->addend; | |
910 | ||
911 | if (reloc_entry->address > input_section->_cooked_size) | |
912 | return bfd_reloc_outofrange; | |
913 | ||
914 | gp_disp_relent = *reloc_entry; | |
915 | reloc_entry = &gp_disp_relent; | |
916 | reloc_entry->addend = relocation - 4; | |
b3c0fc57 ILT |
917 | } |
918 | ||
919 | /* Now do the LO16 reloc in the usual way. */ | |
920 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
6e07e54f ILT |
921 | input_section, output_bfd, error_message); |
922 | } | |
923 | ||
924 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset | |
925 | table used for PIC code. If the symbol is an external symbol, the | |
926 | instruction is modified to contain the offset of the appropriate | |
927 | entry in the global offset table. If the symbol is a section | |
928 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit | |
929 | addends are combined to form the real addend against the section | |
930 | symbol; the GOT16 is modified to contain the offset of an entry in | |
931 | the global offset table, and the LO16 is modified to offset it | |
932 | appropriately. Thus an offset larger than 16 bits requires a | |
933 | modified value in the global offset table. | |
934 | ||
935 | This implementation suffices for the assembler, but the linker does | |
936 | not yet know how to create global offset tables. */ | |
937 | ||
bc05732b ILT |
938 | bfd_reloc_status_type |
939 | _bfd_mips_elf_got16_reloc (abfd, | |
6e07e54f ILT |
940 | reloc_entry, |
941 | symbol, | |
942 | data, | |
943 | input_section, | |
944 | output_bfd, | |
945 | error_message) | |
946 | bfd *abfd; | |
947 | arelent *reloc_entry; | |
948 | asymbol *symbol; | |
949 | PTR data; | |
950 | asection *input_section; | |
951 | bfd *output_bfd; | |
952 | char **error_message; | |
953 | { | |
954 | /* If we're relocating, and this an external symbol, we don't want | |
955 | to change anything. */ | |
956 | if (output_bfd != (bfd *) NULL | |
957 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
958 | && reloc_entry->addend == 0) | |
959 | { | |
960 | reloc_entry->address += input_section->output_offset; | |
961 | return bfd_reloc_ok; | |
962 | } | |
963 | ||
964 | /* If we're relocating, and this is a local symbol, we can handle it | |
965 | just like HI16. */ | |
966 | if (output_bfd != (bfd *) NULL | |
967 | && (symbol->flags & BSF_SECTION_SYM) != 0) | |
bc05732b ILT |
968 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, |
969 | input_section, output_bfd, error_message); | |
6e07e54f ILT |
970 | |
971 | abort (); | |
b3c0fc57 ILT |
972 | } |
973 | ||
5b3b9ff6 ILT |
974 | /* We have to figure out the gp value, so that we can adjust the |
975 | symbol value correctly. We look up the symbol _gp in the output | |
976 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
977 | target data. We don't need to adjust the symbol value for an | |
978 | external symbol if we are producing relocateable output. */ | |
a16fcab3 | 979 | |
b3c0fc57 | 980 | static bfd_reloc_status_type |
abec70b9 | 981 | mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) |
b3c0fc57 | 982 | bfd *output_bfd; |
5b3b9ff6 ILT |
983 | asymbol *symbol; |
984 | boolean relocateable; | |
6e07e54f | 985 | char **error_message; |
abec70b9 | 986 | bfd_vma *pgp; |
b3c0fc57 | 987 | { |
24f13b03 | 988 | if (bfd_is_und_section (symbol->section) |
5b3b9ff6 | 989 | && ! relocateable) |
abec70b9 ILT |
990 | { |
991 | *pgp = 0; | |
992 | return bfd_reloc_undefined; | |
993 | } | |
a16fcab3 | 994 | |
abec70b9 ILT |
995 | *pgp = _bfd_get_gp_value (output_bfd); |
996 | if (*pgp == 0 | |
5b3b9ff6 | 997 | && (! relocateable |
b3c0fc57 ILT |
998 | || (symbol->flags & BSF_SECTION_SYM) != 0)) |
999 | { | |
5b3b9ff6 | 1000 | if (relocateable) |
b3c0fc57 ILT |
1001 | { |
1002 | /* Make up a value. */ | |
abec70b9 ILT |
1003 | *pgp = symbol->section->output_section->vma + 0x4000; |
1004 | _bfd_set_gp_value (output_bfd, *pgp); | |
b3c0fc57 ILT |
1005 | } |
1006 | else | |
1007 | { | |
1008 | unsigned int count; | |
1009 | asymbol **sym; | |
1010 | unsigned int i; | |
1011 | ||
1012 | count = bfd_get_symcount (output_bfd); | |
1013 | sym = bfd_get_outsymbols (output_bfd); | |
1014 | ||
1015 | if (sym == (asymbol **) NULL) | |
1016 | i = count; | |
1017 | else | |
1018 | { | |
1019 | for (i = 0; i < count; i++, sym++) | |
1020 | { | |
1021 | register CONST char *name; | |
1022 | ||
1023 | name = bfd_asymbol_name (*sym); | |
1024 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
1025 | { | |
abec70b9 ILT |
1026 | *pgp = bfd_asymbol_value (*sym); |
1027 | _bfd_set_gp_value (output_bfd, *pgp); | |
b3c0fc57 ILT |
1028 | break; |
1029 | } | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | if (i >= count) | |
1034 | { | |
1035 | /* Only get the error once. */ | |
abec70b9 ILT |
1036 | *pgp = 4; |
1037 | _bfd_set_gp_value (output_bfd, *pgp); | |
6e07e54f ILT |
1038 | *error_message = |
1039 | (char *) "GP relative relocation when _gp not defined"; | |
b3c0fc57 ILT |
1040 | return bfd_reloc_dangerous; |
1041 | } | |
1042 | } | |
1043 | } | |
1044 | ||
5b3b9ff6 ILT |
1045 | return bfd_reloc_ok; |
1046 | } | |
1047 | ||
1048 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must | |
1049 | become the offset from the gp register. This function also handles | |
1050 | R_MIPS_LITERAL relocations, although those can be handled more | |
1051 | cleverly because the entries in the .lit8 and .lit4 sections can be | |
1052 | merged. */ | |
1053 | ||
1054 | static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *, | |
1055 | arelent *, asection *, | |
1056 | boolean, PTR, bfd_vma)); | |
1057 | ||
bc05732b ILT |
1058 | bfd_reloc_status_type |
1059 | _bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1060 | output_bfd, error_message) | |
5b3b9ff6 ILT |
1061 | bfd *abfd; |
1062 | arelent *reloc_entry; | |
1063 | asymbol *symbol; | |
1064 | PTR data; | |
1065 | asection *input_section; | |
1066 | bfd *output_bfd; | |
1067 | char **error_message; | |
1068 | { | |
1069 | boolean relocateable; | |
1070 | bfd_reloc_status_type ret; | |
abec70b9 | 1071 | bfd_vma gp; |
5b3b9ff6 ILT |
1072 | |
1073 | /* If we're relocating, and this is an external symbol with no | |
1074 | addend, we don't want to change anything. We will only have an | |
1075 | addend if this is a newly created reloc, not read from an ELF | |
1076 | file. */ | |
1077 | if (output_bfd != (bfd *) NULL | |
1078 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1079 | && reloc_entry->addend == 0) | |
1080 | { | |
1081 | reloc_entry->address += input_section->output_offset; | |
1082 | return bfd_reloc_ok; | |
1083 | } | |
1084 | ||
1085 | if (output_bfd != (bfd *) NULL) | |
1086 | relocateable = true; | |
1087 | else | |
1088 | { | |
1089 | relocateable = false; | |
1090 | output_bfd = symbol->section->output_section->owner; | |
1091 | } | |
1092 | ||
abec70b9 ILT |
1093 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
1094 | &gp); | |
5b3b9ff6 ILT |
1095 | if (ret != bfd_reloc_ok) |
1096 | return ret; | |
1097 | ||
a2546fce | 1098 | return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, |
abec70b9 | 1099 | relocateable, data, gp); |
a16fcab3 KR |
1100 | } |
1101 | ||
1102 | static bfd_reloc_status_type | |
1103 | gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1104 | gp) | |
1105 | bfd *abfd; | |
1106 | asymbol *symbol; | |
1107 | arelent *reloc_entry; | |
1108 | asection *input_section; | |
1109 | boolean relocateable; | |
1110 | PTR data; | |
1111 | bfd_vma gp; | |
1112 | { | |
1113 | bfd_vma relocation; | |
1114 | unsigned long insn; | |
1115 | unsigned long val; | |
1116 | ||
b3c0fc57 ILT |
1117 | if (bfd_is_com_section (symbol->section)) |
1118 | relocation = 0; | |
1119 | else | |
1120 | relocation = symbol->value; | |
1121 | ||
1122 | relocation += symbol->section->output_section->vma; | |
1123 | relocation += symbol->section->output_offset; | |
1124 | ||
1125 | if (reloc_entry->address > input_section->_cooked_size) | |
1126 | return bfd_reloc_outofrange; | |
1127 | ||
1128 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1129 | ||
1130 | /* Set val to the offset into the section or symbol. */ | |
bc05732b ILT |
1131 | if (reloc_entry->howto->src_mask == 0) |
1132 | { | |
1133 | /* This case occurs with the 64-bit MIPS ELF ABI. */ | |
1134 | val = reloc_entry->addend; | |
1135 | } | |
1136 | else | |
1137 | { | |
1138 | val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; | |
1139 | if (val & 0x8000) | |
1140 | val -= 0x10000; | |
1141 | } | |
b3c0fc57 ILT |
1142 | |
1143 | /* Adjust val for the final section location and GP value. If we | |
1144 | are producing relocateable output, we don't want to do this for | |
1145 | an external symbol. */ | |
5b3b9ff6 | 1146 | if (! relocateable |
b3c0fc57 | 1147 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
a16fcab3 | 1148 | val += relocation - gp; |
b3c0fc57 ILT |
1149 | |
1150 | insn = (insn &~ 0xffff) | (val & 0xffff); | |
1151 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
1152 | ||
5b3b9ff6 | 1153 | if (relocateable) |
b3c0fc57 ILT |
1154 | reloc_entry->address += input_section->output_offset; |
1155 | ||
1156 | /* Make sure it fit in 16 bits. */ | |
1157 | if (val >= 0x8000 && val < 0xffff8000) | |
6e07e54f | 1158 | return bfd_reloc_overflow; |
b3c0fc57 ILT |
1159 | |
1160 | return bfd_reloc_ok; | |
1161 | } | |
6b4b4d17 | 1162 | |
5b3b9ff6 ILT |
1163 | /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset |
1164 | from the gp register? XXX */ | |
1165 | ||
1166 | static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *, | |
1167 | arelent *, asection *, | |
1168 | boolean, PTR, bfd_vma)); | |
1169 | ||
bc05732b ILT |
1170 | bfd_reloc_status_type |
1171 | _bfd_mips_elf_gprel32_reloc (abfd, | |
5b3b9ff6 ILT |
1172 | reloc_entry, |
1173 | symbol, | |
1174 | data, | |
1175 | input_section, | |
1176 | output_bfd, | |
1177 | error_message) | |
1178 | bfd *abfd; | |
1179 | arelent *reloc_entry; | |
1180 | asymbol *symbol; | |
1181 | PTR data; | |
1182 | asection *input_section; | |
1183 | bfd *output_bfd; | |
1184 | char **error_message; | |
1185 | { | |
1186 | boolean relocateable; | |
1187 | bfd_reloc_status_type ret; | |
abec70b9 | 1188 | bfd_vma gp; |
5b3b9ff6 ILT |
1189 | |
1190 | /* If we're relocating, and this is an external symbol with no | |
1191 | addend, we don't want to change anything. We will only have an | |
1192 | addend if this is a newly created reloc, not read from an ELF | |
1193 | file. */ | |
1194 | if (output_bfd != (bfd *) NULL | |
1195 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1196 | && reloc_entry->addend == 0) | |
1197 | { | |
1198 | *error_message = (char *) | |
1199 | "32bits gp relative relocation occurs for an external symbol"; | |
1200 | return bfd_reloc_outofrange; | |
1201 | } | |
1202 | ||
1203 | if (output_bfd != (bfd *) NULL) | |
abec70b9 ILT |
1204 | { |
1205 | relocateable = true; | |
1206 | gp = _bfd_get_gp_value (output_bfd); | |
1207 | } | |
5b3b9ff6 ILT |
1208 | else |
1209 | { | |
1210 | relocateable = false; | |
1211 | output_bfd = symbol->section->output_section->owner; | |
1212 | ||
1213 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, | |
abec70b9 | 1214 | error_message, &gp); |
5b3b9ff6 ILT |
1215 | if (ret != bfd_reloc_ok) |
1216 | return ret; | |
1217 | } | |
1218 | ||
1219 | return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, | |
abec70b9 | 1220 | relocateable, data, gp); |
5b3b9ff6 ILT |
1221 | } |
1222 | ||
1223 | static bfd_reloc_status_type | |
1224 | gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, | |
1225 | gp) | |
1226 | bfd *abfd; | |
1227 | asymbol *symbol; | |
1228 | arelent *reloc_entry; | |
1229 | asection *input_section; | |
1230 | boolean relocateable; | |
1231 | PTR data; | |
1232 | bfd_vma gp; | |
1233 | { | |
1234 | bfd_vma relocation; | |
1235 | unsigned long val; | |
1236 | ||
1237 | if (bfd_is_com_section (symbol->section)) | |
1238 | relocation = 0; | |
1239 | else | |
1240 | relocation = symbol->value; | |
1241 | ||
1242 | relocation += symbol->section->output_section->vma; | |
1243 | relocation += symbol->section->output_offset; | |
1244 | ||
1245 | if (reloc_entry->address > input_section->_cooked_size) | |
1246 | return bfd_reloc_outofrange; | |
1247 | ||
bc05732b ILT |
1248 | if (reloc_entry->howto->src_mask == 0) |
1249 | { | |
1250 | /* This case arises with the 64-bit MIPS ELF ABI. */ | |
1251 | val = 0; | |
1252 | } | |
1253 | else | |
1254 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
5b3b9ff6 ILT |
1255 | |
1256 | /* Set val to the offset into the section or symbol. */ | |
1257 | val += reloc_entry->addend; | |
1258 | ||
1259 | /* Adjust val for the final section location and GP value. If we | |
1260 | are producing relocateable output, we don't want to do this for | |
1261 | an external symbol. */ | |
1262 | if (! relocateable | |
1263 | || (symbol->flags & BSF_SECTION_SYM) != 0) | |
1264 | val += relocation - gp; | |
1265 | ||
1266 | bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); | |
1267 | ||
1268 | if (relocateable) | |
1269 | reloc_entry->address += input_section->output_offset; | |
1270 | ||
1271 | return bfd_reloc_ok; | |
1272 | } | |
1273 | ||
e4f4813f ILT |
1274 | /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are |
1275 | generated when addreses are 64 bits. The upper 32 bits are a simle | |
1276 | sign extension. */ | |
1277 | ||
1278 | static bfd_reloc_status_type | |
1279 | mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1280 | output_bfd, error_message) | |
1281 | bfd *abfd; | |
1282 | arelent *reloc_entry; | |
1283 | asymbol *symbol; | |
1284 | PTR data; | |
1285 | asection *input_section; | |
1286 | bfd *output_bfd; | |
1287 | char **error_message; | |
1288 | { | |
1289 | bfd_reloc_status_type r; | |
1290 | arelent reloc32; | |
1291 | unsigned long val; | |
1292 | bfd_size_type addr; | |
1293 | ||
1294 | r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1295 | input_section, output_bfd, error_message); | |
1296 | if (r != bfd_reloc_continue) | |
1297 | return r; | |
1298 | ||
1299 | /* Do a normal 32 bit relocation on the lower 32 bits. */ | |
1300 | reloc32 = *reloc_entry; | |
1301 | if (bfd_big_endian (abfd)) | |
1302 | reloc32.address += 4; | |
1303 | reloc32.howto = &elf_mips_howto_table[R_MIPS_32]; | |
1304 | r = bfd_perform_relocation (abfd, &reloc32, data, input_section, | |
1305 | output_bfd, error_message); | |
1306 | ||
1307 | /* Sign extend into the upper 32 bits. */ | |
1308 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); | |
1309 | if ((val & 0x80000000) != 0) | |
1310 | val = 0xffffffff; | |
1311 | else | |
1312 | val = 0; | |
1313 | addr = reloc_entry->address; | |
1314 | if (bfd_little_endian (abfd)) | |
1315 | addr += 4; | |
1316 | bfd_put_32 (abfd, val, (bfd_byte *) data + addr); | |
1317 | ||
1318 | return r; | |
1319 | } | |
1320 | ||
1321 | /* Handle a mips16 jump. */ | |
1322 | ||
1323 | static bfd_reloc_status_type | |
1324 | mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1325 | output_bfd, error_message) | |
1326 | bfd *abfd; | |
1327 | arelent *reloc_entry; | |
1328 | asymbol *symbol; | |
1329 | PTR data; | |
1330 | asection *input_section; | |
1331 | bfd *output_bfd; | |
1332 | char **error_message; | |
1333 | { | |
1334 | if (output_bfd != (bfd *) NULL | |
1335 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
1336 | && reloc_entry->addend == 0) | |
1337 | { | |
1338 | reloc_entry->address += input_section->output_offset; | |
1339 | return bfd_reloc_ok; | |
1340 | } | |
1341 | ||
1342 | /* FIXME. */ | |
1343 | abort (); | |
1344 | } | |
1345 | ||
b3c0fc57 | 1346 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ |
6b4b4d17 | 1347 | |
b3c0fc57 ILT |
1348 | struct elf_reloc_map { |
1349 | bfd_reloc_code_real_type bfd_reloc_val; | |
1350 | enum reloc_type elf_reloc_val; | |
1351 | }; | |
1352 | ||
1353 | static CONST struct elf_reloc_map mips_reloc_map[] = | |
1354 | { | |
1355 | { BFD_RELOC_NONE, R_MIPS_NONE, }, | |
1356 | { BFD_RELOC_16, R_MIPS_16 }, | |
1357 | { BFD_RELOC_32, R_MIPS_32 }, | |
1358 | { BFD_RELOC_CTOR, R_MIPS_32 }, | |
e4f4813f | 1359 | { BFD_RELOC_64, R_MIPS_64 }, |
b3c0fc57 ILT |
1360 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, |
1361 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, | |
1362 | { BFD_RELOC_LO16, R_MIPS_LO16 }, | |
1363 | { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 }, | |
1364 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, | |
1365 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, | |
1366 | { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, | |
1367 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, | |
e9f03cd4 ILT |
1368 | { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 }, |
1369 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, | |
b7384d22 ILT |
1370 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, |
1371 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, | |
1372 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 } | |
b3c0fc57 ILT |
1373 | }; |
1374 | ||
1375 | /* Given a BFD reloc type, return a howto structure. */ | |
1376 | ||
16fe8950 | 1377 | static reloc_howto_type * |
b3c0fc57 ILT |
1378 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) |
1379 | bfd *abfd; | |
1380 | bfd_reloc_code_real_type code; | |
1381 | { | |
6ab826bd | 1382 | unsigned int i; |
b3c0fc57 ILT |
1383 | |
1384 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
1385 | { | |
1386 | if (mips_reloc_map[i].bfd_reloc_val == code) | |
1387 | return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val]; | |
1388 | } | |
e4f4813f ILT |
1389 | |
1390 | /* Special handling for the MIPS16 jump, since it is a made up reloc | |
1391 | type with a large value. */ | |
1392 | if (code == BFD_RELOC_MIPS16_JMP) | |
1393 | return &elf_mips16_jump_howto; | |
1394 | ||
b3c0fc57 ILT |
1395 | return NULL; |
1396 | } | |
1397 | ||
1398 | /* Given a MIPS reloc type, fill in an arelent structure. */ | |
1399 | ||
1400 | static void | |
1401 | mips_info_to_howto_rel (abfd, cache_ptr, dst) | |
1402 | bfd *abfd; | |
1403 | arelent *cache_ptr; | |
1404 | Elf32_Internal_Rel *dst; | |
1405 | { | |
1406 | unsigned int r_type; | |
1407 | ||
1408 | r_type = ELF32_R_TYPE (dst->r_info); | |
e4f4813f ILT |
1409 | if (r_type == R_MIPS16_26) |
1410 | cache_ptr->howto = &elf_mips16_jump_howto; | |
1411 | else | |
1412 | { | |
1413 | BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); | |
1414 | cache_ptr->howto = &elf_mips_howto_table[r_type]; | |
1415 | } | |
b3c0fc57 ILT |
1416 | |
1417 | /* The addend for a GPREL16 or LITERAL relocation comes from the GP | |
1418 | value for the object file. We get the addend now, rather than | |
1419 | when we do the relocation, because the symbol manipulations done | |
1420 | by the linker may cause us to lose track of the input BFD. */ | |
1421 | if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 | |
1422 | && (r_type == (unsigned int) R_MIPS_GPREL16 | |
1423 | || r_type == (unsigned int) R_MIPS_LITERAL)) | |
1424 | cache_ptr->addend = elf_gp (abfd); | |
1425 | } | |
1426 | \f | |
1427 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
1428 | routines swap this structure in and out. They are used outside of | |
1429 | BFD, so they are globally visible. */ | |
1430 | ||
1431 | void | |
1432 | bfd_mips_elf32_swap_reginfo_in (abfd, ex, in) | |
1433 | bfd *abfd; | |
1434 | const Elf32_External_RegInfo *ex; | |
1435 | Elf32_RegInfo *in; | |
1436 | { | |
1437 | in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); | |
1438 | in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); | |
1439 | in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); | |
1440 | in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); | |
1441 | in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); | |
1442 | in->ri_gp_value = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gp_value); | |
1443 | } | |
1444 | ||
1445 | void | |
1446 | bfd_mips_elf32_swap_reginfo_out (abfd, in, ex) | |
1447 | bfd *abfd; | |
1448 | const Elf32_RegInfo *in; | |
1449 | Elf32_External_RegInfo *ex; | |
1450 | { | |
1451 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, | |
1452 | (bfd_byte *) ex->ri_gprmask); | |
1453 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], | |
1454 | (bfd_byte *) ex->ri_cprmask[0]); | |
1455 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], | |
1456 | (bfd_byte *) ex->ri_cprmask[1]); | |
1457 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], | |
1458 | (bfd_byte *) ex->ri_cprmask[2]); | |
1459 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], | |
1460 | (bfd_byte *) ex->ri_cprmask[3]); | |
1461 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gp_value, | |
1462 | (bfd_byte *) ex->ri_gp_value); | |
1463 | } | |
aac6b32f | 1464 | |
903612a2 ILT |
1465 | /* In the 64 bit ABI, the .MIPS.options section holds register |
1466 | information in an Elf64_Reginfo structure. These routines swap | |
1467 | them in and out. They are globally visible because they are used | |
1468 | outside of BFD. These routines are here so that gas can call them | |
1469 | without worrying about whether the 64 bit ABI has been included. */ | |
1470 | ||
1471 | void | |
1472 | bfd_mips_elf64_swap_reginfo_in (abfd, ex, in) | |
1473 | bfd *abfd; | |
1474 | const Elf64_External_RegInfo *ex; | |
1475 | Elf64_Internal_RegInfo *in; | |
1476 | { | |
1477 | in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); | |
1478 | in->ri_pad = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_pad); | |
1479 | in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); | |
1480 | in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); | |
1481 | in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); | |
1482 | in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); | |
1483 | in->ri_gp_value = bfd_h_get_64 (abfd, (bfd_byte *) ex->ri_gp_value); | |
1484 | } | |
1485 | ||
1486 | void | |
1487 | bfd_mips_elf64_swap_reginfo_out (abfd, in, ex) | |
1488 | bfd *abfd; | |
1489 | const Elf64_Internal_RegInfo *in; | |
1490 | Elf64_External_RegInfo *ex; | |
1491 | { | |
1492 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, | |
1493 | (bfd_byte *) ex->ri_gprmask); | |
1494 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_pad, | |
1495 | (bfd_byte *) ex->ri_pad); | |
1496 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], | |
1497 | (bfd_byte *) ex->ri_cprmask[0]); | |
1498 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], | |
1499 | (bfd_byte *) ex->ri_cprmask[1]); | |
1500 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], | |
1501 | (bfd_byte *) ex->ri_cprmask[2]); | |
1502 | bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], | |
1503 | (bfd_byte *) ex->ri_cprmask[3]); | |
1504 | bfd_h_put_64 (abfd, (bfd_vma) in->ri_gp_value, | |
1505 | (bfd_byte *) ex->ri_gp_value); | |
1506 | } | |
1507 | ||
aac6b32f ILT |
1508 | /* Swap an entry in a .gptab section. Note that these routines rely |
1509 | on the equivalence of the two elements of the union. */ | |
1510 | ||
1511 | static void | |
1512 | bfd_mips_elf32_swap_gptab_in (abfd, ex, in) | |
1513 | bfd *abfd; | |
1514 | const Elf32_External_gptab *ex; | |
1515 | Elf32_gptab *in; | |
1516 | { | |
1517 | in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value); | |
1518 | in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes); | |
1519 | } | |
1520 | ||
1521 | static void | |
1522 | bfd_mips_elf32_swap_gptab_out (abfd, in, ex) | |
1523 | bfd *abfd; | |
1524 | const Elf32_gptab *in; | |
1525 | Elf32_External_gptab *ex; | |
1526 | { | |
1527 | bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value, | |
1528 | ex->gt_entry.gt_g_value); | |
1529 | bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes, | |
1530 | ex->gt_entry.gt_bytes); | |
1531 | } | |
5b3b9ff6 ILT |
1532 | |
1533 | static void | |
1534 | bfd_elf32_swap_compact_rel_out (abfd, in, ex) | |
1535 | bfd *abfd; | |
53787b23 | 1536 | const Elf32_compact_rel *in; |
5b3b9ff6 ILT |
1537 | Elf32_External_compact_rel *ex; |
1538 | { | |
1539 | bfd_h_put_32 (abfd, (bfd_vma) in->id1, ex->id1); | |
1540 | bfd_h_put_32 (abfd, (bfd_vma) in->num, ex->num); | |
1541 | bfd_h_put_32 (abfd, (bfd_vma) in->id2, ex->id2); | |
1542 | bfd_h_put_32 (abfd, (bfd_vma) in->offset, ex->offset); | |
1543 | bfd_h_put_32 (abfd, (bfd_vma) in->reserved0, ex->reserved0); | |
1544 | bfd_h_put_32 (abfd, (bfd_vma) in->reserved1, ex->reserved1); | |
1545 | } | |
1546 | ||
1547 | static void | |
1548 | bfd_elf32_swap_crinfo_out (abfd, in, ex) | |
1549 | bfd *abfd; | |
53787b23 | 1550 | const Elf32_crinfo *in; |
5b3b9ff6 ILT |
1551 | Elf32_External_crinfo *ex; |
1552 | { | |
053baeb1 ILT |
1553 | unsigned long l; |
1554 | ||
1555 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
1556 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
1557 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
1558 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
1559 | bfd_h_put_32 (abfd, (bfd_vma) l, ex->info); | |
5b3b9ff6 ILT |
1560 | bfd_h_put_32 (abfd, (bfd_vma) in->konst, ex->konst); |
1561 | bfd_h_put_32 (abfd, (bfd_vma) in->vaddr, ex->vaddr); | |
1562 | } | |
bc05732b ILT |
1563 | |
1564 | /* Swap in an options header. */ | |
1565 | ||
1566 | void | |
1567 | bfd_mips_elf_swap_options_in (abfd, ex, in) | |
1568 | bfd *abfd; | |
1569 | const Elf_External_Options *ex; | |
1570 | Elf_Internal_Options *in; | |
1571 | { | |
1572 | in->kind = bfd_h_get_8 (abfd, ex->kind); | |
1573 | in->size = bfd_h_get_8 (abfd, ex->size); | |
1574 | in->section = bfd_h_get_16 (abfd, ex->section); | |
1575 | in->info = bfd_h_get_32 (abfd, ex->info); | |
1576 | } | |
1577 | ||
1578 | /* Swap out an options header. */ | |
1579 | ||
1580 | void | |
1581 | bfd_mips_elf_swap_options_out (abfd, in, ex) | |
1582 | bfd *abfd; | |
1583 | const Elf_Internal_Options *in; | |
1584 | Elf_External_Options *ex; | |
1585 | { | |
1586 | bfd_h_put_8 (abfd, in->kind, ex->kind); | |
1587 | bfd_h_put_8 (abfd, in->size, ex->size); | |
1588 | bfd_h_put_16 (abfd, in->section, ex->section); | |
1589 | bfd_h_put_32 (abfd, in->info, ex->info); | |
1590 | } | |
5b3b9ff6 ILT |
1591 | \f |
1592 | /* Determine whether a symbol is global for the purposes of splitting | |
1593 | the symbol table into global symbols and local symbols. At least | |
6e07e54f ILT |
1594 | on Irix 5, this split must be between section symbols and all other |
1595 | symbols. On most ELF targets the split is between static symbols | |
1596 | and externally visible symbols. */ | |
1597 | ||
1598 | /*ARGSUSED*/ | |
1599 | static boolean | |
1600 | mips_elf_sym_is_global (abfd, sym) | |
1601 | bfd *abfd; | |
1602 | asymbol *sym; | |
1603 | { | |
1604 | return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false; | |
1605 | } | |
1606 | \f | |
00176555 ILT |
1607 | /* Set the right machine number for a MIPS ELF file. This is used for |
1608 | both the 32-bit and the 64-bit ABI. */ | |
6e07e54f | 1609 | |
00176555 ILT |
1610 | boolean |
1611 | _bfd_mips_elf_object_p (abfd) | |
6e07e54f ILT |
1612 | bfd *abfd; |
1613 | { | |
1614 | switch (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) | |
1615 | { | |
1616 | default: | |
1617 | case E_MIPS_ARCH_1: | |
fe4ff515 | 1618 | (void) bfd_default_set_arch_mach (abfd, bfd_arch_mips, 3000); |
6e07e54f ILT |
1619 | break; |
1620 | ||
1621 | case E_MIPS_ARCH_2: | |
1622 | (void) bfd_default_set_arch_mach (abfd, bfd_arch_mips, 6000); | |
1623 | break; | |
1624 | ||
1625 | case E_MIPS_ARCH_3: | |
1626 | (void) bfd_default_set_arch_mach (abfd, bfd_arch_mips, 4000); | |
1627 | break; | |
cabd8fa0 ILT |
1628 | |
1629 | case E_MIPS_ARCH_4: | |
1630 | (void) bfd_default_set_arch_mach (abfd, bfd_arch_mips, 8000); | |
1631 | break; | |
6e07e54f ILT |
1632 | } |
1633 | ||
00176555 ILT |
1634 | return true; |
1635 | } | |
1636 | ||
1637 | /* Set the right machine number for a 32-bit MIPS ELF file. */ | |
1638 | ||
1639 | static boolean | |
1640 | mips_elf32_object_p (abfd) | |
1641 | bfd *abfd; | |
1642 | { | |
aac6b32f ILT |
1643 | /* Irix 5 is broken. Object file symbol tables are not always |
1644 | sorted correctly such that local symbols precede global symbols, | |
6c495350 ILT |
1645 | and the sh_info field in the symbol table is not always right. */ |
1646 | elf_bad_symtab (abfd) = true; | |
aac6b32f | 1647 | |
00176555 | 1648 | return _bfd_mips_elf_object_p (abfd); |
6e07e54f ILT |
1649 | } |
1650 | ||
1651 | /* The final processing done just before writing out a MIPS ELF object | |
1652 | file. This gets the MIPS architecture right based on the machine | |
00176555 | 1653 | number. This is used by both the 32-bit and the 64-bit ABI. */ |
6e07e54f | 1654 | |
24f13b03 | 1655 | /*ARGSUSED*/ |
00176555 ILT |
1656 | void |
1657 | _bfd_mips_elf_final_write_processing (abfd, linker) | |
6e07e54f | 1658 | bfd *abfd; |
24f13b03 | 1659 | boolean linker; |
6e07e54f ILT |
1660 | { |
1661 | unsigned long val; | |
aac6b32f ILT |
1662 | unsigned int i; |
1663 | Elf_Internal_Shdr **hdrpp; | |
1cfe12f2 ILT |
1664 | const char *name; |
1665 | asection *sec; | |
6e07e54f ILT |
1666 | |
1667 | switch (bfd_get_mach (abfd)) | |
1668 | { | |
1669 | case 3000: | |
1670 | val = E_MIPS_ARCH_1; | |
1671 | break; | |
1672 | ||
1673 | case 6000: | |
1674 | val = E_MIPS_ARCH_2; | |
1675 | break; | |
1676 | ||
1677 | case 4000: | |
1678 | val = E_MIPS_ARCH_3; | |
1679 | break; | |
1680 | ||
cabd8fa0 ILT |
1681 | case 8000: |
1682 | val = E_MIPS_ARCH_4; | |
1683 | break; | |
1684 | ||
6e07e54f | 1685 | default: |
5b3b9ff6 ILT |
1686 | val = 0; |
1687 | break; | |
6e07e54f ILT |
1688 | } |
1689 | ||
1690 | elf_elfheader (abfd)->e_flags &=~ EF_MIPS_ARCH; | |
1691 | elf_elfheader (abfd)->e_flags |= val; | |
aac6b32f ILT |
1692 | |
1693 | /* Set the sh_info field for .gptab sections. */ | |
1694 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
1695 | i < elf_elfheader (abfd)->e_shnum; | |
1696 | i++, hdrpp++) | |
1697 | { | |
1cfe12f2 | 1698 | switch ((*hdrpp)->sh_type) |
aac6b32f | 1699 | { |
1cfe12f2 ILT |
1700 | case SHT_MIPS_LIBLIST: |
1701 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
1702 | if (sec != NULL) | |
1703 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
1704 | break; | |
aac6b32f | 1705 | |
1cfe12f2 | 1706 | case SHT_MIPS_GPTAB: |
24f13b03 ILT |
1707 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); |
1708 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
aac6b32f ILT |
1709 | BFD_ASSERT (name != NULL |
1710 | && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0); | |
1711 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); | |
1712 | BFD_ASSERT (sec != NULL); | |
1713 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
1cfe12f2 ILT |
1714 | break; |
1715 | ||
1716 | case SHT_MIPS_CONTENT: | |
1717 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
1718 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
1719 | BFD_ASSERT (name != NULL | |
1720 | && strncmp (name, ".MIPS.content", | |
1721 | sizeof ".MIPS.content" - 1) == 0); | |
1722 | sec = bfd_get_section_by_name (abfd, | |
1723 | name + sizeof ".MIPS.content" - 1); | |
1724 | BFD_ASSERT (sec != NULL); | |
1725 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
1726 | break; | |
1727 | ||
1728 | case SHT_MIPS_SYMBOL_LIB: | |
1729 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
1730 | if (sec != NULL) | |
1731 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
1732 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
1733 | if (sec != NULL) | |
1734 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
1735 | break; | |
1736 | ||
1737 | case SHT_MIPS_EVENTS: | |
1738 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
1739 | name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); | |
1740 | BFD_ASSERT (name != NULL); | |
1741 | if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0) | |
1742 | sec = bfd_get_section_by_name (abfd, | |
1743 | name + sizeof ".MIPS.events" - 1); | |
1744 | else | |
1745 | { | |
1746 | BFD_ASSERT (strncmp (name, ".MIPS.post_rel", | |
1747 | sizeof ".MIPS.post_rel" - 1) == 0); | |
1748 | sec = bfd_get_section_by_name (abfd, | |
1749 | (name | |
1750 | + sizeof ".MIPS.post_rel" - 1)); | |
1751 | } | |
1752 | BFD_ASSERT (sec != NULL); | |
1753 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
1754 | break; | |
aac6b32f ILT |
1755 | } |
1756 | } | |
6e07e54f ILT |
1757 | } |
1758 | \f | |
5b3b9ff6 ILT |
1759 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ |
1760 | ||
bc05732b ILT |
1761 | boolean |
1762 | _bfd_mips_elf_set_private_flags (abfd, flags) | |
5b3b9ff6 ILT |
1763 | bfd *abfd; |
1764 | flagword flags; | |
1765 | { | |
1766 | BFD_ASSERT (!elf_flags_init (abfd) | |
1767 | || elf_elfheader (abfd)->e_flags == flags); | |
1768 | ||
1769 | elf_elfheader (abfd)->e_flags = flags; | |
1770 | elf_flags_init (abfd) = true; | |
1771 | return true; | |
1772 | } | |
1773 | ||
1774 | /* Copy backend specific data from one object module to another */ | |
1775 | ||
bc05732b ILT |
1776 | boolean |
1777 | _bfd_mips_elf_copy_private_bfd_data (ibfd, obfd) | |
5b3b9ff6 ILT |
1778 | bfd *ibfd; |
1779 | bfd *obfd; | |
1780 | { | |
fe4ff515 ILT |
1781 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1782 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5b3b9ff6 ILT |
1783 | return true; |
1784 | ||
1785 | BFD_ASSERT (!elf_flags_init (obfd) | |
1786 | || (elf_elfheader (obfd)->e_flags | |
1787 | == elf_elfheader (ibfd)->e_flags)); | |
1788 | ||
d1bf45aa | 1789 | elf_gp (obfd) = elf_gp (ibfd); |
5b3b9ff6 ILT |
1790 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
1791 | elf_flags_init (obfd) = true; | |
1792 | return true; | |
1793 | } | |
1794 | ||
fe4ff515 ILT |
1795 | /* Return the ISA for a MIPS e_flags value. */ |
1796 | ||
1797 | static INLINE int | |
1798 | elf_mips_isa (flags) | |
1799 | flagword flags; | |
1800 | { | |
1801 | switch (flags & EF_MIPS_ARCH) | |
1802 | { | |
1803 | case E_MIPS_ARCH_1: | |
1804 | return 1; | |
1805 | case E_MIPS_ARCH_2: | |
1806 | return 2; | |
1807 | case E_MIPS_ARCH_3: | |
1808 | return 3; | |
1809 | case E_MIPS_ARCH_4: | |
1810 | return 4; | |
1811 | } | |
1812 | return 4; | |
1813 | } | |
1814 | ||
5b3b9ff6 ILT |
1815 | /* Merge backend specific data from an object file to the output |
1816 | object file when linking. */ | |
1817 | ||
bc05732b ILT |
1818 | boolean |
1819 | _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd) | |
5b3b9ff6 ILT |
1820 | bfd *ibfd; |
1821 | bfd *obfd; | |
1822 | { | |
1823 | flagword old_flags; | |
1824 | flagword new_flags; | |
99f1722b | 1825 | boolean ok; |
5b3b9ff6 ILT |
1826 | |
1827 | /* Check if we have the same endianess */ | |
1828 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
1829 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) | |
1830 | { | |
1831 | (*_bfd_error_handler) | |
1832 | ("%s: compiled for a %s endian system and target is %s endian", | |
1833 | bfd_get_filename (ibfd), | |
1834 | bfd_big_endian (ibfd) ? "big" : "little", | |
1835 | bfd_big_endian (obfd) ? "big" : "little"); | |
1836 | ||
1837 | bfd_set_error (bfd_error_wrong_format); | |
1838 | return false; | |
1839 | } | |
1840 | ||
fe4ff515 ILT |
1841 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1842 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5b3b9ff6 ILT |
1843 | return true; |
1844 | ||
1845 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1846 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
1847 | old_flags = elf_elfheader (obfd)->e_flags; | |
1848 | ||
99f1722b | 1849 | if (! elf_flags_init (obfd)) |
5b3b9ff6 ILT |
1850 | { |
1851 | elf_flags_init (obfd) = true; | |
1852 | elf_elfheader (obfd)->e_flags = new_flags; | |
99f1722b | 1853 | |
fe4ff515 ILT |
1854 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
1855 | && bfd_get_arch_info (obfd)->the_default) | |
5b3b9ff6 | 1856 | { |
99f1722b ILT |
1857 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
1858 | bfd_get_mach (ibfd))) | |
1859 | return false; | |
5b3b9ff6 ILT |
1860 | } |
1861 | ||
99f1722b ILT |
1862 | return true; |
1863 | } | |
1864 | ||
1865 | /* Check flag compatibility. */ | |
1866 | ||
1867 | new_flags &= ~EF_MIPS_NOREORDER; | |
1868 | old_flags &= ~EF_MIPS_NOREORDER; | |
1869 | ||
1870 | if (new_flags == old_flags) | |
1871 | return true; | |
1872 | ||
1873 | ok = true; | |
1874 | ||
1875 | if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC)) | |
1876 | { | |
1877 | new_flags &= ~EF_MIPS_PIC; | |
1878 | old_flags &= ~EF_MIPS_PIC; | |
1879 | (*_bfd_error_handler) | |
1880 | ("%s: linking PIC files with non-PIC files", | |
1881 | bfd_get_filename (ibfd)); | |
1882 | ok = false; | |
1883 | } | |
1884 | ||
1885 | if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC)) | |
1886 | { | |
1887 | new_flags &= ~EF_MIPS_CPIC; | |
1888 | old_flags &= ~EF_MIPS_CPIC; | |
1889 | (*_bfd_error_handler) | |
1890 | ("%s: linking abicalls files with non-abicalls files", | |
1891 | bfd_get_filename (ibfd)); | |
1892 | ok = false; | |
1893 | } | |
1894 | ||
1895 | /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3 | |
1896 | and -mips4 code. They will normally use the same data sizes and | |
1897 | calling conventions. */ | |
1898 | if ((new_flags & EF_MIPS_ARCH) != (old_flags & EF_MIPS_ARCH)) | |
1899 | { | |
1900 | int new_isa, old_isa; | |
1901 | ||
1902 | new_isa = elf_mips_isa (new_flags); | |
1903 | old_isa = elf_mips_isa (old_flags); | |
1904 | if ((new_isa == 1 || new_isa == 2) | |
1905 | ? (old_isa != 1 && old_isa != 2) | |
1906 | : (old_isa == 1 || old_isa == 2)) | |
5b3b9ff6 | 1907 | { |
5b3b9ff6 | 1908 | (*_bfd_error_handler) |
99f1722b ILT |
1909 | ("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)", |
1910 | bfd_get_filename (ibfd), new_isa, old_isa); | |
1911 | ok = false; | |
5b3b9ff6 ILT |
1912 | } |
1913 | ||
99f1722b ILT |
1914 | new_flags &= ~ EF_MIPS_ARCH; |
1915 | old_flags &= ~ EF_MIPS_ARCH; | |
1916 | } | |
fe4ff515 | 1917 | |
99f1722b ILT |
1918 | /* Warn about any other mismatches */ |
1919 | if (new_flags != old_flags) | |
1920 | { | |
1921 | (*_bfd_error_handler) | |
1922 | ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", | |
1923 | bfd_get_filename (ibfd), (unsigned long) new_flags, | |
1924 | (unsigned long) old_flags); | |
1925 | ok = false; | |
1926 | } | |
5b3b9ff6 | 1927 | |
99f1722b ILT |
1928 | if (! ok) |
1929 | { | |
5b3b9ff6 ILT |
1930 | bfd_set_error (bfd_error_bad_value); |
1931 | return false; | |
1932 | } | |
1933 | ||
1934 | return true; | |
1935 | } | |
1936 | \f | |
b3c0fc57 ILT |
1937 | /* Handle a MIPS specific section when reading an object file. This |
1938 | is called when elfcode.h finds a section with an unknown type. | |
d1bf45aa ILT |
1939 | This routine supports both the 32-bit and 64-bit ELF ABI. |
1940 | ||
b3c0fc57 ILT |
1941 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure |
1942 | how to. */ | |
1943 | ||
d1bf45aa ILT |
1944 | boolean |
1945 | _bfd_mips_elf_section_from_shdr (abfd, hdr, name) | |
b3c0fc57 | 1946 | bfd *abfd; |
d1bf45aa ILT |
1947 | Elf_Internal_Shdr *hdr; |
1948 | const char *name; | |
b3c0fc57 ILT |
1949 | { |
1950 | /* There ought to be a place to keep ELF backend specific flags, but | |
1951 | at the moment there isn't one. We just keep track of the | |
1952 | sections by their name, instead. Fortunately, the ABI gives | |
1953 | suggested names for all the MIPS specific sections, so we will | |
1954 | probably get away with this. */ | |
1955 | switch (hdr->sh_type) | |
1956 | { | |
1957 | case SHT_MIPS_LIBLIST: | |
1958 | if (strcmp (name, ".liblist") != 0) | |
1959 | return false; | |
1960 | break; | |
6a5848cd ILT |
1961 | case SHT_MIPS_MSYM: |
1962 | if (strcmp (name, ".msym") != 0) | |
1963 | return false; | |
1964 | break; | |
b3c0fc57 ILT |
1965 | case SHT_MIPS_CONFLICT: |
1966 | if (strcmp (name, ".conflict") != 0) | |
1967 | return false; | |
1968 | break; | |
1969 | case SHT_MIPS_GPTAB: | |
1970 | if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0) | |
1971 | return false; | |
1972 | break; | |
1973 | case SHT_MIPS_UCODE: | |
1974 | if (strcmp (name, ".ucode") != 0) | |
1975 | return false; | |
1976 | break; | |
1977 | case SHT_MIPS_DEBUG: | |
1978 | if (strcmp (name, ".mdebug") != 0) | |
1979 | return false; | |
1980 | break; | |
1981 | case SHT_MIPS_REGINFO: | |
1982 | if (strcmp (name, ".reginfo") != 0 | |
1983 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
1984 | return false; | |
1985 | break; | |
1cfe12f2 ILT |
1986 | case SHT_MIPS_IFACE: |
1987 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
1988 | return false; | |
1989 | break; | |
1990 | case SHT_MIPS_CONTENT: | |
a4e07bb4 | 1991 | if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0) |
1cfe12f2 ILT |
1992 | return false; |
1993 | break; | |
6e07e54f | 1994 | case SHT_MIPS_OPTIONS: |
bc05732b ILT |
1995 | if (strcmp (name, ".options") != 0 |
1996 | && strcmp (name, ".MIPS.options") != 0) | |
6e07e54f ILT |
1997 | return false; |
1998 | break; | |
6a5848cd ILT |
1999 | case SHT_MIPS_DWARF: |
2000 | if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0) | |
2001 | return false; | |
2002 | break; | |
1cfe12f2 ILT |
2003 | case SHT_MIPS_SYMBOL_LIB: |
2004 | if (strcmp (name, ".MIPS.symlib") != 0) | |
2005 | return false; | |
2006 | break; | |
6a5848cd | 2007 | case SHT_MIPS_EVENTS: |
1cfe12f2 ILT |
2008 | if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0 |
2009 | && strncmp (name, ".MIPS.post_rel", | |
2010 | sizeof ".MIPS.post_rel" - 1) != 0) | |
6a5848cd ILT |
2011 | return false; |
2012 | break; | |
b3c0fc57 ILT |
2013 | default: |
2014 | return false; | |
2015 | } | |
2016 | ||
497c5434 ILT |
2017 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) |
2018 | return false; | |
b3c0fc57 | 2019 | |
497c5434 ILT |
2020 | if (hdr->sh_type == SHT_MIPS_DEBUG) |
2021 | { | |
d1bf45aa ILT |
2022 | if (! bfd_set_section_flags (abfd, hdr->bfd_section, |
2023 | (bfd_get_section_flags (abfd, | |
2024 | hdr->bfd_section) | |
497c5434 ILT |
2025 | | SEC_DEBUGGING))) |
2026 | return false; | |
2027 | } | |
b3c0fc57 | 2028 | |
d1bf45aa ILT |
2029 | return true; |
2030 | } | |
2031 | ||
2032 | /* Handle a 32-bit MIPS ELF specific section. */ | |
2033 | ||
2034 | static boolean | |
2035 | mips_elf32_section_from_shdr (abfd, hdr, name) | |
2036 | bfd *abfd; | |
2037 | Elf_Internal_Shdr *hdr; | |
2038 | char *name; | |
2039 | { | |
2040 | if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name)) | |
2041 | return false; | |
2042 | ||
497c5434 | 2043 | /* FIXME: We should record sh_info for a .gptab section. */ |
b3c0fc57 | 2044 | |
497c5434 ILT |
2045 | /* For a .reginfo section, set the gp value in the tdata information |
2046 | from the contents of this section. We need the gp value while | |
d1bf45aa ILT |
2047 | processing relocs, so we just get it now. The .reginfo section |
2048 | is not used in the 64-bit MIPS ELF ABI. */ | |
497c5434 ILT |
2049 | if (hdr->sh_type == SHT_MIPS_REGINFO) |
2050 | { | |
2051 | Elf32_External_RegInfo ext; | |
2052 | Elf32_RegInfo s; | |
b3c0fc57 | 2053 | |
d1bf45aa | 2054 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext, |
497c5434 ILT |
2055 | (file_ptr) 0, sizeof ext)) |
2056 | return false; | |
2057 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); | |
2058 | elf_gp (abfd) = s.ri_gp_value; | |
b3c0fc57 ILT |
2059 | } |
2060 | ||
bc05732b ILT |
2061 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and |
2062 | set the gp value based on what we find. We may see both | |
2063 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
2064 | they should agree. */ | |
2065 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
2066 | { | |
2067 | bfd_byte *contents, *l, *lend; | |
2068 | ||
2069 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); | |
2070 | if (contents == NULL) | |
2071 | return false; | |
2072 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, | |
2073 | (file_ptr) 0, hdr->sh_size)) | |
2074 | { | |
2075 | free (contents); | |
2076 | return false; | |
2077 | } | |
2078 | l = contents; | |
2079 | lend = contents + hdr->sh_size; | |
2080 | while (l + sizeof (Elf_External_Options) <= lend) | |
2081 | { | |
2082 | Elf_Internal_Options intopt; | |
2083 | ||
2084 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
2085 | &intopt); | |
2086 | if (intopt.kind == ODK_REGINFO) | |
2087 | { | |
2088 | Elf32_RegInfo intreg; | |
2089 | ||
2090 | bfd_mips_elf32_swap_reginfo_in | |
2091 | (abfd, | |
2092 | ((Elf32_External_RegInfo *) | |
2093 | (l + sizeof (Elf_External_Options))), | |
2094 | &intreg); | |
2095 | elf_gp (abfd) = intreg.ri_gp_value; | |
2096 | } | |
2097 | l += intopt.size; | |
2098 | } | |
2099 | free (contents); | |
2100 | } | |
2101 | ||
b3c0fc57 ILT |
2102 | return true; |
2103 | } | |
2104 | ||
2105 | /* Set the correct type for a MIPS ELF section. We do this by the | |
00176555 ILT |
2106 | section name, which is a hack, but ought to work. This routine is |
2107 | used by both the 32-bit and the 64-bit ABI. */ | |
b3c0fc57 | 2108 | |
00176555 ILT |
2109 | boolean |
2110 | _bfd_mips_elf_fake_sections (abfd, hdr, sec) | |
b3c0fc57 ILT |
2111 | bfd *abfd; |
2112 | Elf32_Internal_Shdr *hdr; | |
2113 | asection *sec; | |
2114 | { | |
2115 | register const char *name; | |
2116 | ||
2117 | name = bfd_get_section_name (abfd, sec); | |
2118 | ||
2119 | if (strcmp (name, ".liblist") == 0) | |
2120 | { | |
2121 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
2122 | hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib); | |
1cfe12f2 | 2123 | /* The sh_link field is set in final_write_processing. */ |
b3c0fc57 | 2124 | } |
6a5848cd ILT |
2125 | else if (strcmp (name, ".msym") == 0) |
2126 | { | |
2127 | hdr->sh_type = SHT_MIPS_MSYM; | |
2128 | hdr->sh_entsize = 8; | |
2129 | /* FIXME: Set the sh_info field. */ | |
2130 | } | |
b3c0fc57 ILT |
2131 | else if (strcmp (name, ".conflict") == 0) |
2132 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
2133 | else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
2134 | { | |
2135 | hdr->sh_type = SHT_MIPS_GPTAB; | |
aac6b32f | 2136 | hdr->sh_entsize = sizeof (Elf32_External_gptab); |
00176555 | 2137 | /* The sh_info field is set in final_write_processing. */ |
b3c0fc57 ILT |
2138 | } |
2139 | else if (strcmp (name, ".ucode") == 0) | |
2140 | hdr->sh_type = SHT_MIPS_UCODE; | |
2141 | else if (strcmp (name, ".mdebug") == 0) | |
6e07e54f ILT |
2142 | { |
2143 | hdr->sh_type = SHT_MIPS_DEBUG; | |
5b3b9ff6 ILT |
2144 | /* In a shared object on Irix 5.3, the .mdebug section has an |
2145 | entsize of 0. FIXME: Does this matter? */ | |
2146 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
2147 | hdr->sh_entsize = 0; | |
2148 | else | |
2149 | hdr->sh_entsize = 1; | |
6e07e54f | 2150 | } |
b3c0fc57 ILT |
2151 | else if (strcmp (name, ".reginfo") == 0) |
2152 | { | |
2153 | hdr->sh_type = SHT_MIPS_REGINFO; | |
5b3b9ff6 ILT |
2154 | /* In a shared object on Irix 5.3, the .reginfo section has an |
2155 | entsize of 0x18. FIXME: Does this matter? */ | |
2156 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) | |
2157 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
2158 | else | |
2159 | hdr->sh_entsize = 1; | |
b3c0fc57 ILT |
2160 | |
2161 | /* Force the section size to the correct value, even if the | |
2162 | linker thinks it is larger. The link routine below will only | |
2163 | write out this much data for .reginfo. */ | |
2164 | hdr->sh_size = sec->_raw_size = sizeof (Elf32_External_RegInfo); | |
2165 | } | |
5b3b9ff6 ILT |
2166 | else if (SGI_COMPAT (abfd) |
2167 | && (strcmp (name, ".hash") == 0 | |
2168 | || strcmp (name, ".dynamic") == 0 | |
2169 | || strcmp (name, ".dynstr") == 0)) | |
2170 | { | |
2171 | hdr->sh_entsize = 0; | |
2172 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; | |
2173 | } | |
2174 | else if (strcmp (name, ".got") == 0 | |
2175 | || strcmp (name, ".sdata") == 0 | |
2176 | || strcmp (name, ".sbss") == 0 | |
2177 | || strcmp (name, ".lit4") == 0 | |
2178 | || strcmp (name, ".lit8") == 0) | |
2179 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
1cfe12f2 ILT |
2180 | else if (strcmp (name, ".MIPS.interfaces") == 0) |
2181 | { | |
2182 | hdr->sh_type = SHT_MIPS_IFACE; | |
2183 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
2184 | } | |
2185 | else if (strcmp (name, ".MIPS.content") == 0) | |
2186 | { | |
2187 | hdr->sh_type = SHT_MIPS_CONTENT; | |
2188 | /* The sh_info field is set in final_write_processing. */ | |
2189 | } | |
bc05732b ILT |
2190 | else if (strcmp (name, ".options") == 0 |
2191 | || strcmp (name, ".MIPS.options") == 0) | |
6e07e54f ILT |
2192 | { |
2193 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
2194 | hdr->sh_entsize = 1; | |
1cfe12f2 | 2195 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; |
6e07e54f | 2196 | } |
6a5848cd ILT |
2197 | else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0) |
2198 | hdr->sh_type = SHT_MIPS_DWARF; | |
1cfe12f2 ILT |
2199 | else if (strcmp (name, ".MIPS.symlib") == 0) |
2200 | { | |
2201 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
2202 | /* The sh_link and sh_info fields are set in | |
2203 | final_write_processing. */ | |
2204 | } | |
2205 | else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0 | |
2206 | || strncmp (name, ".MIPS.post_rel", | |
2207 | sizeof ".MIPS.post_rel" - 1) == 0) | |
2208 | { | |
2209 | hdr->sh_type = SHT_MIPS_EVENTS; | |
2210 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
2211 | /* The sh_link field is set in final_write_processing. */ | |
2212 | } | |
b3c0fc57 ILT |
2213 | |
2214 | return true; | |
2215 | } | |
2216 | ||
2217 | /* Given a BFD section, try to locate the corresponding ELF section | |
00176555 ILT |
2218 | index. This is used by both the 32-bit and the 64-bit ABI. |
2219 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
2220 | but for non-PIC objects we will certainly want support for at least | |
2221 | the .scommon section. */ | |
b3c0fc57 | 2222 | |
00176555 ILT |
2223 | boolean |
2224 | _bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval) | |
b3c0fc57 ILT |
2225 | bfd *abfd; |
2226 | Elf32_Internal_Shdr *hdr; | |
2227 | asection *sec; | |
2228 | int *retval; | |
2229 | { | |
2230 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) | |
2231 | { | |
2232 | *retval = SHN_MIPS_SCOMMON; | |
2233 | return true; | |
2234 | } | |
82b1edf7 KR |
2235 | if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) |
2236 | { | |
2237 | *retval = SHN_MIPS_ACOMMON; | |
2238 | return true; | |
2239 | } | |
b3c0fc57 ILT |
2240 | return false; |
2241 | } | |
2242 | ||
bc05732b ILT |
2243 | /* When are writing out the .options or .MIPS.options section, |
2244 | remember the bytes we are writing out, so that we can install the | |
2245 | GP value in the section_processing routine. */ | |
2246 | ||
2247 | boolean | |
2248 | _bfd_mips_elf_set_section_contents (abfd, section, location, offset, count) | |
2249 | bfd *abfd; | |
2250 | sec_ptr section; | |
2251 | PTR location; | |
2252 | file_ptr offset; | |
2253 | bfd_size_type count; | |
2254 | { | |
2255 | if (strcmp (section->name, ".options") == 0 | |
2256 | || strcmp (section->name, ".MIPS.options") == 0) | |
2257 | { | |
2258 | bfd_byte *c; | |
2259 | ||
2260 | if (elf_section_data (section) == NULL) | |
2261 | { | |
2262 | section->used_by_bfd = | |
2263 | (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); | |
2264 | if (elf_section_data (section) == NULL) | |
2265 | return false; | |
2266 | } | |
2267 | c = (bfd_byte *) elf_section_data (section)->tdata; | |
2268 | if (c == NULL) | |
2269 | { | |
2270 | bfd_size_type size; | |
2271 | ||
2272 | if (section->_cooked_size != 0) | |
2273 | size = section->_cooked_size; | |
2274 | else | |
2275 | size = section->_raw_size; | |
2276 | c = (PTR) bfd_zalloc (abfd, size); | |
2277 | if (c == NULL) | |
2278 | return false; | |
2279 | elf_section_data (section)->tdata = (PTR) c; | |
2280 | } | |
2281 | ||
2282 | memcpy (c + offset, location, count); | |
2283 | } | |
2284 | ||
2285 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
2286 | count); | |
2287 | } | |
2288 | ||
2289 | /* Work over a section just before writing it out. This routine is | |
2290 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
2291 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
2292 | a better way. */ | |
b3c0fc57 | 2293 | |
00176555 ILT |
2294 | boolean |
2295 | _bfd_mips_elf_section_processing (abfd, hdr) | |
b3c0fc57 | 2296 | bfd *abfd; |
00176555 | 2297 | Elf_Internal_Shdr *hdr; |
b3c0fc57 | 2298 | { |
24f13b03 | 2299 | if (hdr->bfd_section != NULL) |
b3c0fc57 | 2300 | { |
24f13b03 | 2301 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); |
b3c0fc57 ILT |
2302 | |
2303 | if (strcmp (name, ".sdata") == 0) | |
2304 | { | |
2305 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
2306 | hdr->sh_type = SHT_PROGBITS; | |
2307 | } | |
2308 | else if (strcmp (name, ".sbss") == 0) | |
2309 | { | |
2310 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
2311 | hdr->sh_type = SHT_NOBITS; | |
2312 | } | |
2313 | else if (strcmp (name, ".lit8") == 0 | |
2314 | || strcmp (name, ".lit4") == 0) | |
2315 | { | |
2316 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; | |
2317 | hdr->sh_type = SHT_PROGBITS; | |
2318 | } | |
5b3b9ff6 ILT |
2319 | else if (strcmp (name, ".compact_rel") == 0) |
2320 | { | |
2321 | hdr->sh_flags = 0; | |
2322 | hdr->sh_type = SHT_PROGBITS; | |
2323 | } | |
2324 | else if (strcmp (name, ".rtproc") == 0) | |
2325 | { | |
2326 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
2327 | { | |
2328 | unsigned int adjust; | |
2329 | ||
2330 | adjust = hdr->sh_size % hdr->sh_addralign; | |
2331 | if (adjust != 0) | |
2332 | hdr->sh_size += hdr->sh_addralign - adjust; | |
2333 | } | |
2334 | } | |
b3c0fc57 ILT |
2335 | } |
2336 | ||
2337 | return true; | |
2338 | } | |
00176555 ILT |
2339 | |
2340 | /* Work over a section just before writing it out. We update the GP | |
bc05732b ILT |
2341 | value in the SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS sections based |
2342 | on the value we are using. */ | |
00176555 ILT |
2343 | |
2344 | static boolean | |
2345 | mips_elf32_section_processing (abfd, hdr) | |
2346 | bfd *abfd; | |
2347 | Elf32_Internal_Shdr *hdr; | |
2348 | { | |
2349 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
2350 | { | |
2351 | bfd_byte buf[4]; | |
2352 | ||
2353 | BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); | |
2354 | BFD_ASSERT (hdr->contents == NULL); | |
2355 | ||
2356 | if (bfd_seek (abfd, | |
2357 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
2358 | SEEK_SET) == -1) | |
2359 | return false; | |
2360 | bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf); | |
2361 | if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4) | |
2362 | return false; | |
2363 | } | |
2364 | ||
bc05732b ILT |
2365 | if (hdr->sh_type == SHT_MIPS_OPTIONS |
2366 | && hdr->bfd_section != NULL | |
2367 | && elf_section_data (hdr->bfd_section) != NULL | |
2368 | && elf_section_data (hdr->bfd_section)->tdata != NULL) | |
2369 | { | |
2370 | bfd_byte *contents, *l, *lend; | |
2371 | ||
2372 | /* We stored the section contents in the elf_section_data tdata | |
2373 | field in the set_section_contents routine. We save the | |
2374 | section contents so that we don't have to read them again. | |
2375 | At this point we know that elf_gp is set, so we can look | |
2376 | through the section contents to see if there is an | |
2377 | ODK_REGINFO structure. */ | |
2378 | ||
2379 | contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata; | |
2380 | l = contents; | |
2381 | lend = contents + hdr->sh_size; | |
2382 | while (l + sizeof (Elf_External_Options) <= lend) | |
2383 | { | |
2384 | Elf_Internal_Options intopt; | |
2385 | ||
2386 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
2387 | &intopt); | |
2388 | if (intopt.kind == ODK_REGINFO) | |
2389 | { | |
2390 | bfd_byte buf[4]; | |
2391 | ||
2392 | if (bfd_seek (abfd, | |
2393 | (hdr->sh_offset | |
2394 | + (l - contents) | |
2395 | + sizeof (Elf_External_Options) | |
2396 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
2397 | SEEK_SET) == -1) | |
2398 | return false; | |
2399 | bfd_h_put_32 (abfd, elf_gp (abfd), buf); | |
2400 | if (bfd_write (buf, 1, 4, abfd) != 4) | |
2401 | return false; | |
2402 | } | |
2403 | l += intopt.size; | |
2404 | } | |
2405 | } | |
2406 | ||
00176555 ILT |
2407 | return _bfd_mips_elf_section_processing (abfd, hdr); |
2408 | } | |
b3c0fc57 | 2409 | \f |
aac6b32f ILT |
2410 | /* MIPS ELF uses two common sections. One is the usual one, and the |
2411 | other is for small objects. All the small objects are kept | |
2412 | together, and then referenced via the gp pointer, which yields | |
2413 | faster assembler code. This is what we use for the small common | |
2414 | section. This approach is copied from ecoff.c. */ | |
2415 | static asection mips_elf_scom_section; | |
2416 | static asymbol mips_elf_scom_symbol; | |
2417 | static asymbol *mips_elf_scom_symbol_ptr; | |
2418 | ||
2419 | /* MIPS ELF also uses an acommon section, which represents an | |
ff12f303 | 2420 | allocated common symbol which may be overridden by a |
aac6b32f ILT |
2421 | definition in a shared library. */ |
2422 | static asection mips_elf_acom_section; | |
2423 | static asymbol mips_elf_acom_symbol; | |
2424 | static asymbol *mips_elf_acom_symbol_ptr; | |
2425 | ||
5b3b9ff6 ILT |
2426 | /* The Irix 5 support uses two virtual sections, which represent |
2427 | text/data symbols defined in dynamic objects. */ | |
2428 | static asection mips_elf_text_section; | |
2429 | static asection *mips_elf_text_section_ptr; | |
2430 | static asymbol mips_elf_text_symbol; | |
2431 | static asymbol *mips_elf_text_symbol_ptr; | |
2432 | ||
2433 | static asection mips_elf_data_section; | |
2434 | static asection *mips_elf_data_section_ptr; | |
2435 | static asymbol mips_elf_data_symbol; | |
2436 | static asymbol *mips_elf_data_symbol_ptr; | |
2437 | ||
00176555 ILT |
2438 | /* Handle the special MIPS section numbers that a symbol may use. |
2439 | This is used for both the 32-bit and the 64-bit ABI. */ | |
aac6b32f | 2440 | |
00176555 ILT |
2441 | void |
2442 | _bfd_mips_elf_symbol_processing (abfd, asym) | |
aac6b32f ILT |
2443 | bfd *abfd; |
2444 | asymbol *asym; | |
2445 | { | |
2446 | elf_symbol_type *elfsym; | |
2447 | ||
2448 | elfsym = (elf_symbol_type *) asym; | |
2449 | switch (elfsym->internal_elf_sym.st_shndx) | |
2450 | { | |
2451 | case SHN_MIPS_ACOMMON: | |
2452 | /* This section is used in a dynamically linked executable file. | |
2453 | It is an allocated common section. The dynamic linker can | |
2454 | either resolve these symbols to something in a shared | |
2455 | library, or it can just leave them here. For our purposes, | |
2456 | we can consider these symbols to be in a new section. */ | |
2457 | if (mips_elf_acom_section.name == NULL) | |
2458 | { | |
2459 | /* Initialize the acommon section. */ | |
2460 | mips_elf_acom_section.name = ".acommon"; | |
6ab826bd | 2461 | mips_elf_acom_section.flags = SEC_ALLOC; |
aac6b32f ILT |
2462 | mips_elf_acom_section.output_section = &mips_elf_acom_section; |
2463 | mips_elf_acom_section.symbol = &mips_elf_acom_symbol; | |
2464 | mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; | |
2465 | mips_elf_acom_symbol.name = ".acommon"; | |
2466 | mips_elf_acom_symbol.flags = BSF_SECTION_SYM; | |
2467 | mips_elf_acom_symbol.section = &mips_elf_acom_section; | |
2468 | mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; | |
2469 | } | |
2470 | asym->section = &mips_elf_acom_section; | |
2471 | break; | |
2472 | ||
2473 | case SHN_COMMON: | |
2474 | /* Common symbols less than the GP size are automatically | |
2475 | treated as SHN_MIPS_SCOMMON symbols. */ | |
2476 | if (asym->value > elf_gp_size (abfd)) | |
2477 | break; | |
2478 | /* Fall through. */ | |
2479 | case SHN_MIPS_SCOMMON: | |
2480 | if (mips_elf_scom_section.name == NULL) | |
2481 | { | |
2482 | /* Initialize the small common section. */ | |
2483 | mips_elf_scom_section.name = ".scommon"; | |
2484 | mips_elf_scom_section.flags = SEC_IS_COMMON; | |
2485 | mips_elf_scom_section.output_section = &mips_elf_scom_section; | |
2486 | mips_elf_scom_section.symbol = &mips_elf_scom_symbol; | |
2487 | mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; | |
2488 | mips_elf_scom_symbol.name = ".scommon"; | |
2489 | mips_elf_scom_symbol.flags = BSF_SECTION_SYM; | |
2490 | mips_elf_scom_symbol.section = &mips_elf_scom_section; | |
2491 | mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; | |
2492 | } | |
2493 | asym->section = &mips_elf_scom_section; | |
2494 | asym->value = elfsym->internal_elf_sym.st_size; | |
2495 | break; | |
2496 | ||
2497 | case SHN_MIPS_SUNDEFINED: | |
24f13b03 | 2498 | asym->section = bfd_und_section_ptr; |
aac6b32f | 2499 | break; |
5b3b9ff6 ILT |
2500 | |
2501 | #if 0 /* for SGI_COMPAT */ | |
2502 | case SHN_MIPS_TEXT: | |
2503 | asym->section = mips_elf_text_section_ptr; | |
2504 | break; | |
2505 | ||
2506 | case SHN_MIPS_DATA: | |
2507 | asym->section = mips_elf_data_section_ptr; | |
2508 | break; | |
2509 | #endif | |
2510 | } | |
2511 | } | |
2512 | \f | |
2513 | /* When creating an Irix 5 executable, we need REGINFO and RTPROC | |
2514 | segments. */ | |
2515 | ||
2516 | static int | |
2517 | mips_elf_additional_program_headers (abfd) | |
2518 | bfd *abfd; | |
2519 | { | |
2520 | asection *s; | |
2521 | int ret; | |
2522 | ||
2523 | ret = 0; | |
2524 | ||
2525 | if (! SGI_COMPAT (abfd)) | |
2526 | return ret; | |
2527 | ||
2528 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
2529 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
2530 | { | |
2531 | /* We need a PT_MIPS_REGINFO segment. */ | |
2532 | ++ret; | |
2533 | } | |
2534 | ||
53787b23 | 2535 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL |
5b3b9ff6 ILT |
2536 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) |
2537 | { | |
2538 | /* We need a PT_MIPS_RTPROC segment. */ | |
2539 | ++ret; | |
2540 | } | |
2541 | ||
2542 | return ret; | |
2543 | } | |
2544 | ||
2545 | /* Modify the segment map for an Irix 5 executable. */ | |
2546 | ||
2547 | static boolean | |
2548 | mips_elf_modify_segment_map (abfd) | |
2549 | bfd *abfd; | |
2550 | { | |
2551 | asection *s; | |
2552 | struct elf_segment_map *m, **pm; | |
2553 | ||
2554 | if (! SGI_COMPAT (abfd)) | |
2555 | return true; | |
2556 | ||
2557 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
2558 | segment. */ | |
2559 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
2560 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
2561 | { | |
2562 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2563 | if (m->p_type == PT_MIPS_REGINFO) | |
2564 | break; | |
2565 | if (m == NULL) | |
2566 | { | |
2567 | m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); | |
2568 | if (m == NULL) | |
2569 | return false; | |
2570 | ||
2571 | m->p_type = PT_MIPS_REGINFO; | |
2572 | m->count = 1; | |
2573 | m->sections[0] = s; | |
2574 | ||
2575 | /* We want to put it after the PHDR and INTERP segments. */ | |
2576 | pm = &elf_tdata (abfd)->segment_map; | |
2577 | while (*pm != NULL | |
2578 | && ((*pm)->p_type == PT_PHDR | |
2579 | || (*pm)->p_type == PT_INTERP)) | |
2580 | pm = &(*pm)->next; | |
2581 | ||
2582 | m->next = *pm; | |
2583 | *pm = m; | |
2584 | } | |
2585 | } | |
ff12f303 | 2586 | |
5b3b9ff6 ILT |
2587 | /* If there are .dynamic and .mdebug sections, we make a room for |
2588 | the RTPROC header. FIXME: Rewrite without section names. */ | |
2589 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
2590 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
2591 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
2592 | { | |
2593 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2594 | if (m->p_type == PT_MIPS_RTPROC) | |
2595 | break; | |
2596 | if (m == NULL) | |
2597 | { | |
2598 | m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); | |
2599 | if (m == NULL) | |
2600 | return false; | |
2601 | ||
2602 | m->p_type = PT_MIPS_RTPROC; | |
2603 | ||
2604 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
2605 | if (s == NULL) | |
2606 | { | |
2607 | m->count = 0; | |
2608 | m->p_flags = 0; | |
2609 | m->p_flags_valid = 1; | |
2610 | } | |
2611 | else | |
2612 | { | |
2613 | m->count = 1; | |
2614 | m->sections[0] = s; | |
2615 | } | |
2616 | ||
2617 | /* We want to put it after the DYNAMIC segment. */ | |
2618 | pm = &elf_tdata (abfd)->segment_map; | |
2619 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) | |
2620 | pm = &(*pm)->next; | |
2621 | if (*pm != NULL) | |
2622 | pm = &(*pm)->next; | |
2623 | ||
2624 | m->next = *pm; | |
2625 | *pm = m; | |
2626 | } | |
2627 | } | |
2628 | ||
2629 | /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic, .dynstr, | |
2630 | .dynsym, and .hash sections, and everything in between. */ | |
2631 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
2632 | if ((*pm)->p_type == PT_DYNAMIC) | |
2633 | break; | |
2634 | m = *pm; | |
2635 | if (m != NULL | |
2636 | && m->count == 1 | |
2637 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
2638 | { | |
2639 | static const char *sec_names[] = | |
2640 | { ".dynamic", ".dynstr", ".dynsym", ".hash" }; | |
2641 | bfd_vma low, high; | |
2642 | unsigned int i, c; | |
2643 | struct elf_segment_map *n; | |
2644 | ||
2645 | low = 0xffffffff; | |
2646 | high = 0; | |
2647 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
2648 | { | |
2649 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
2650 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
2651 | { | |
2652 | bfd_size_type sz; | |
2653 | ||
2654 | if (low > s->vma) | |
2655 | low = s->vma; | |
2656 | sz = s->_cooked_size; | |
2657 | if (sz == 0) | |
2658 | sz = s->_raw_size; | |
2659 | if (high < s->vma + sz) | |
2660 | high = s->vma + sz; | |
2661 | } | |
2662 | } | |
2663 | ||
2664 | c = 0; | |
2665 | for (s = abfd->sections; s != NULL; s = s->next) | |
2666 | if ((s->flags & SEC_LOAD) != 0 | |
2667 | && s->vma >= low | |
2668 | && ((s->vma | |
2669 | + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) | |
2670 | <= high)) | |
2671 | ++c; | |
2672 | ||
2673 | n = ((struct elf_segment_map *) | |
2674 | bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *))); | |
2675 | if (n == NULL) | |
2676 | return false; | |
2677 | *n = *m; | |
2678 | n->count = c; | |
2679 | ||
2680 | i = 0; | |
2681 | for (s = abfd->sections; s != NULL; s = s->next) | |
2682 | { | |
2683 | if ((s->flags & SEC_LOAD) != 0 | |
2684 | && s->vma >= low | |
2685 | && ((s->vma | |
2686 | + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) | |
2687 | <= high)) | |
2688 | { | |
2689 | n->sections[i] = s; | |
2690 | ++i; | |
2691 | } | |
2692 | } | |
2693 | ||
2694 | *pm = n; | |
aac6b32f | 2695 | } |
5b3b9ff6 ILT |
2696 | |
2697 | return true; | |
2698 | } | |
2699 | \f | |
2700 | /* The structure of the runtime procedure descriptor created by the | |
2701 | loader for use by the static exception system. */ | |
2702 | ||
2703 | typedef struct runtime_pdr { | |
2704 | bfd_vma adr; /* memory address of start of procedure */ | |
2705 | long regmask; /* save register mask */ | |
2706 | long regoffset; /* save register offset */ | |
2707 | long fregmask; /* save floating point register mask */ | |
2708 | long fregoffset; /* save floating point register offset */ | |
2709 | long frameoffset; /* frame size */ | |
2710 | short framereg; /* frame pointer register */ | |
2711 | short pcreg; /* offset or reg of return pc */ | |
2712 | long irpss; /* index into the runtime string table */ | |
2713 | long reserved; | |
2714 | struct exception_info *exception_info;/* pointer to exception array */ | |
2715 | } RPDR, *pRPDR; | |
2716 | #define cbRPDR sizeof(RPDR) | |
2717 | #define rpdNil ((pRPDR) 0) | |
2718 | ||
2719 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
2720 | ||
2721 | static void ecoff_swap_rpdr_out | |
2722 | PARAMS ((bfd *, const RPDR *, struct rpdr_ext *)); | |
2723 | ||
2724 | static void | |
2725 | ecoff_swap_rpdr_out (abfd, in, ex) | |
2726 | bfd *abfd; | |
2727 | const RPDR *in; | |
2728 | struct rpdr_ext *ex; | |
2729 | { | |
2730 | /* ecoff_put_off was defined in ecoffswap.h. */ | |
2731 | ecoff_put_off (abfd, in->adr, (bfd_byte *) ex->p_adr); | |
2732 | bfd_h_put_32 (abfd, in->regmask, (bfd_byte *) ex->p_regmask); | |
2733 | bfd_h_put_32 (abfd, in->regoffset, (bfd_byte *) ex->p_regoffset); | |
2734 | bfd_h_put_32 (abfd, in->fregmask, (bfd_byte *) ex->p_fregmask); | |
2735 | bfd_h_put_32 (abfd, in->fregoffset, (bfd_byte *) ex->p_fregoffset); | |
2736 | bfd_h_put_32 (abfd, in->frameoffset, (bfd_byte *) ex->p_frameoffset); | |
2737 | ||
2738 | bfd_h_put_16 (abfd, in->framereg, (bfd_byte *) ex->p_framereg); | |
2739 | bfd_h_put_16 (abfd, in->pcreg, (bfd_byte *) ex->p_pcreg); | |
2740 | ||
2741 | bfd_h_put_32 (abfd, in->irpss, (bfd_byte *) ex->p_irpss); | |
2742 | #if 0 /* FIXME */ | |
2743 | ecoff_put_off (abfd, in->exception_info, (bfd_byte *) ex->p_exception_info); | |
2744 | #endif | |
aac6b32f ILT |
2745 | } |
2746 | \f | |
6e07e54f ILT |
2747 | /* Read ECOFF debugging information from a .mdebug section into a |
2748 | ecoff_debug_info structure. */ | |
b3c0fc57 | 2749 | |
00176555 ILT |
2750 | boolean |
2751 | _bfd_mips_elf_read_ecoff_info (abfd, section, debug) | |
b3c0fc57 | 2752 | bfd *abfd; |
6e07e54f ILT |
2753 | asection *section; |
2754 | struct ecoff_debug_info *debug; | |
b3c0fc57 | 2755 | { |
6e07e54f ILT |
2756 | HDRR *symhdr; |
2757 | const struct ecoff_debug_swap *swap; | |
a3a33af3 | 2758 | char *ext_hdr = NULL; |
6e07e54f ILT |
2759 | |
2760 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
2761 | ||
5b3b9ff6 | 2762 | ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); |
a3a33af3 | 2763 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
5b3b9ff6 | 2764 | goto error_return; |
6e07e54f ILT |
2765 | |
2766 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, | |
2767 | swap->external_hdr_size) | |
2768 | == false) | |
a3a33af3 | 2769 | goto error_return; |
6e07e54f ILT |
2770 | |
2771 | symhdr = &debug->symbolic_header; | |
2772 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
2773 | ||
2774 | /* The symbolic header contains absolute file offsets and sizes to | |
2775 | read. */ | |
2776 | #define READ(ptr, offset, count, size, type) \ | |
2777 | if (symhdr->count == 0) \ | |
2778 | debug->ptr = NULL; \ | |
2779 | else \ | |
2780 | { \ | |
5b3b9ff6 | 2781 | debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ |
6e07e54f | 2782 | if (debug->ptr == NULL) \ |
5b3b9ff6 | 2783 | goto error_return; \ |
6e07e54f ILT |
2784 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ |
2785 | || (bfd_read (debug->ptr, size, symhdr->count, \ | |
2786 | abfd) != size * symhdr->count)) \ | |
a3a33af3 | 2787 | goto error_return; \ |
6e07e54f ILT |
2788 | } |
2789 | ||
2790 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
2791 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
2792 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
2793 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
2794 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
2795 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
2796 | union aux_ext *); | |
2797 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
2798 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
2799 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
2800 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
aac6b32f ILT |
2801 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); |
2802 | #undef READ | |
9783e04a DM |
2803 | |
2804 | debug->fdr = NULL; | |
a3a33af3 | 2805 | debug->adjust = NULL; |
6e07e54f ILT |
2806 | |
2807 | return true; | |
a3a33af3 ILT |
2808 | |
2809 | error_return: | |
2810 | if (ext_hdr != NULL) | |
2811 | free (ext_hdr); | |
a3a33af3 ILT |
2812 | if (debug->line != NULL) |
2813 | free (debug->line); | |
2814 | if (debug->external_dnr != NULL) | |
2815 | free (debug->external_dnr); | |
2816 | if (debug->external_pdr != NULL) | |
2817 | free (debug->external_pdr); | |
2818 | if (debug->external_sym != NULL) | |
2819 | free (debug->external_sym); | |
2820 | if (debug->external_opt != NULL) | |
2821 | free (debug->external_opt); | |
2822 | if (debug->external_aux != NULL) | |
2823 | free (debug->external_aux); | |
2824 | if (debug->ss != NULL) | |
2825 | free (debug->ss); | |
2826 | if (debug->ssext != NULL) | |
2827 | free (debug->ssext); | |
2828 | if (debug->external_fdr != NULL) | |
2829 | free (debug->external_fdr); | |
2830 | if (debug->external_rfd != NULL) | |
2831 | free (debug->external_rfd); | |
aac6b32f ILT |
2832 | if (debug->external_ext != NULL) |
2833 | free (debug->external_ext); | |
a3a33af3 | 2834 | return false; |
6e07e54f | 2835 | } |
a16fcab3 | 2836 | \f |
a2546fce ILT |
2837 | /* MIPS ELF local labels start with '$', not 'L'. */ |
2838 | ||
2839 | /*ARGSUSED*/ | |
2840 | static boolean | |
2841 | mips_elf_is_local_label (abfd, symbol) | |
2842 | bfd *abfd; | |
2843 | asymbol *symbol; | |
2844 | { | |
2845 | return symbol->name[0] == '$'; | |
2846 | } | |
2847 | ||
a16fcab3 KR |
2848 | /* MIPS ELF uses a special find_nearest_line routine in order the |
2849 | handle the ECOFF debugging information. */ | |
2850 | ||
2851 | struct mips_elf_find_line | |
2852 | { | |
2853 | struct ecoff_debug_info d; | |
2854 | struct ecoff_find_line i; | |
2855 | }; | |
6e07e54f | 2856 | |
bc05732b ILT |
2857 | boolean |
2858 | _bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
2859 | functionname_ptr, line_ptr) | |
a16fcab3 KR |
2860 | bfd *abfd; |
2861 | asection *section; | |
2862 | asymbol **symbols; | |
2863 | bfd_vma offset; | |
2864 | const char **filename_ptr; | |
2865 | const char **functionname_ptr; | |
2866 | unsigned int *line_ptr; | |
2867 | { | |
2868 | asection *msec; | |
2869 | ||
2870 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
2871 | if (msec != NULL) | |
2872 | { | |
6ab826bd | 2873 | flagword origflags; |
a16fcab3 KR |
2874 | struct mips_elf_find_line *fi; |
2875 | const struct ecoff_debug_swap * const swap = | |
2876 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
2877 | ||
6ab826bd FF |
2878 | /* If we are called during a link, mips_elf_final_link may have |
2879 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
2880 | if appropriate (which it normally will be). */ | |
2881 | origflags = msec->flags; | |
2882 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
2883 | msec->flags |= SEC_HAS_CONTENTS; | |
2884 | ||
a16fcab3 KR |
2885 | fi = elf_tdata (abfd)->find_line_info; |
2886 | if (fi == NULL) | |
2887 | { | |
2888 | bfd_size_type external_fdr_size; | |
2889 | char *fraw_src; | |
2890 | char *fraw_end; | |
2891 | struct fdr *fdr_ptr; | |
2892 | ||
2893 | fi = ((struct mips_elf_find_line *) | |
abec70b9 | 2894 | bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); |
a16fcab3 KR |
2895 | if (fi == NULL) |
2896 | { | |
6ab826bd | 2897 | msec->flags = origflags; |
a16fcab3 KR |
2898 | return false; |
2899 | } | |
2900 | ||
00176555 | 2901 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) |
6ab826bd FF |
2902 | { |
2903 | msec->flags = origflags; | |
2904 | return false; | |
2905 | } | |
a16fcab3 KR |
2906 | |
2907 | /* Swap in the FDR information. */ | |
2908 | fi->d.fdr = ((struct fdr *) | |
2909 | bfd_alloc (abfd, | |
2910 | (fi->d.symbolic_header.ifdMax * | |
2911 | sizeof (struct fdr)))); | |
2912 | if (fi->d.fdr == NULL) | |
2913 | { | |
6ab826bd | 2914 | msec->flags = origflags; |
a16fcab3 KR |
2915 | return false; |
2916 | } | |
2917 | external_fdr_size = swap->external_fdr_size; | |
2918 | fdr_ptr = fi->d.fdr; | |
2919 | fraw_src = (char *) fi->d.external_fdr; | |
2920 | fraw_end = (fraw_src | |
2921 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
2922 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
2923 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
2924 | ||
2925 | elf_tdata (abfd)->find_line_info = fi; | |
2926 | ||
2927 | /* Note that we don't bother to ever free this information. | |
2928 | find_nearest_line is either called all the time, as in | |
2929 | objdump -l, so the information should be saved, or it is | |
2930 | rarely called, as in ld error messages, so the memory | |
2931 | wasted is unimportant. Still, it would probably be a | |
2932 | good idea for free_cached_info to throw it away. */ | |
2933 | } | |
2934 | ||
2935 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
2936 | &fi->i, filename_ptr, functionname_ptr, | |
2937 | line_ptr)) | |
6ab826bd FF |
2938 | { |
2939 | msec->flags = origflags; | |
2940 | return true; | |
2941 | } | |
2942 | ||
2943 | msec->flags = origflags; | |
a16fcab3 KR |
2944 | } |
2945 | ||
2946 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
2947 | ||
ede4eed4 KR |
2948 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
2949 | filename_ptr, functionname_ptr, | |
2950 | line_ptr); | |
a16fcab3 KR |
2951 | } |
2952 | \f | |
e900e695 ILT |
2953 | /* The mips16 compiler uses a couple of special sections to handle |
2954 | floating point arguments. | |
2955 | ||
2956 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
2957 | copy floating point arguments from the fp regs to the gp regs and | |
2958 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
2959 | call should be redirected to the stub instead. If no 32 bit | |
2960 | function calls FNNAME, the stub should be discarded. We need to | |
2961 | consider any reference to the function, not just a call, because | |
2962 | if the address of the function is taken we will need the stub, | |
2963 | since the address might be passed to a 32 bit function. | |
2964 | ||
2965 | Section names that look like .mips16.call.FNNAME contain stubs | |
2966 | that copy floating point arguments from the gp regs to the fp | |
2967 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
2968 | then any 16 bit function that calls FNNAME should be redirected | |
2969 | to the stub instead. If FNNAME is not a 32 bit function, the | |
2970 | stub should be discarded. | |
2971 | ||
2972 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
2973 | which call FNNAME and then copy the return value from the fp regs | |
2974 | to the gp regs. These stubs store the return value in $18 while | |
2975 | calling FNNAME; any function which might call one of these stubs | |
2976 | must arrange to save $18 around the call. (This case is not | |
2977 | needed for 32 bit functions that call 16 bit functions, because | |
2978 | 16 bit functions always return floating point values in both | |
2979 | $f0/$f1 and $2/$3.) | |
2980 | ||
2981 | Note that in all cases FNNAME might be defined statically. | |
2982 | Therefore, FNNAME is not used literally. Instead, the relocation | |
2983 | information will indicate which symbol the section is for. | |
2984 | ||
2985 | We record any stubs that we find in the symbol table. */ | |
2986 | ||
2987 | #define FN_STUB ".mips16.fn." | |
2988 | #define CALL_STUB ".mips16.call." | |
2989 | #define CALL_FP_STUB ".mips16.call.fp." | |
2990 | ||
aac6b32f ILT |
2991 | /* The MIPS ELF linker needs additional information for each symbol in |
2992 | the global hash table. */ | |
2993 | ||
2994 | struct mips_elf_link_hash_entry | |
2995 | { | |
2996 | struct elf_link_hash_entry root; | |
6e07e54f | 2997 | |
aac6b32f ILT |
2998 | /* External symbol information. */ |
2999 | EXTR esym; | |
abec70b9 ILT |
3000 | |
3001 | /* Number of MIPS_32 or MIPS_REL32 relocs against this symbol. */ | |
3002 | unsigned int mips_32_relocs; | |
e900e695 ILT |
3003 | |
3004 | /* If there is a stub that 32 bit functions should use to call this | |
3005 | 16 bit function, this points to the section containing the stub. */ | |
3006 | asection *fn_stub; | |
3007 | ||
3008 | /* Whether we need the fn_stub; this is set if this symbol appears | |
3009 | in any relocs other than a 16 bit call. */ | |
3010 | boolean need_fn_stub; | |
3011 | ||
3012 | /* If there is a stub that 16 bit functions should use to call this | |
3013 | 32 bit function, this points to the section containing the stub. */ | |
3014 | asection *call_stub; | |
3015 | ||
3016 | /* This is like the call_stub field, but it is used if the function | |
3017 | being called returns a floating point value. */ | |
3018 | asection *call_fp_stub; | |
aac6b32f ILT |
3019 | }; |
3020 | ||
3021 | /* MIPS ELF linker hash table. */ | |
3022 | ||
3023 | struct mips_elf_link_hash_table | |
3024 | { | |
3025 | struct elf_link_hash_table root; | |
5b3b9ff6 ILT |
3026 | /* String section indices for the dynamic section symbols. */ |
3027 | bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; | |
3028 | /* The number of .rtproc entries. */ | |
3029 | bfd_size_type procedure_count; | |
53787b23 ILT |
3030 | /* The size of the .compact_rel section (if SGI_COMPAT). */ |
3031 | bfd_size_type compact_rel_size; | |
eb52b9dc ILT |
3032 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic |
3033 | entry is set to the address of __rld_obj_head as in Irix 5. */ | |
3034 | boolean use_rld_obj_head; | |
3035 | /* This is the value of the __rld_map or __rld_obj_head symbol. */ | |
3036 | bfd_vma rld_value; | |
e900e695 ILT |
3037 | /* This is set if we see any mips16 stub sections. */ |
3038 | boolean mips16_stubs_seen; | |
aac6b32f ILT |
3039 | }; |
3040 | ||
3041 | /* Look up an entry in a MIPS ELF linker hash table. */ | |
3042 | ||
3043 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
3044 | ((struct mips_elf_link_hash_entry *) \ | |
3045 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
3046 | (copy), (follow))) | |
3047 | ||
3048 | /* Traverse a MIPS ELF linker hash table. */ | |
3049 | ||
3050 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
3051 | (elf_link_hash_traverse \ | |
3052 | (&(table)->root, \ | |
3053 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
3054 | (info))) | |
3055 | ||
3056 | /* Get the MIPS ELF linker hash table from a link_info structure. */ | |
3057 | ||
3058 | #define mips_elf_hash_table(p) \ | |
3059 | ((struct mips_elf_link_hash_table *) ((p)->hash)) | |
3060 | ||
3061 | static boolean mips_elf_output_extsym | |
3062 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
3063 | ||
3064 | /* Create an entry in a MIPS ELF linker hash table. */ | |
3065 | ||
3066 | static struct bfd_hash_entry * | |
3067 | mips_elf_link_hash_newfunc (entry, table, string) | |
3068 | struct bfd_hash_entry *entry; | |
3069 | struct bfd_hash_table *table; | |
3070 | const char *string; | |
3071 | { | |
3072 | struct mips_elf_link_hash_entry *ret = | |
3073 | (struct mips_elf_link_hash_entry *) entry; | |
3074 | ||
3075 | /* Allocate the structure if it has not already been allocated by a | |
3076 | subclass. */ | |
3077 | if (ret == (struct mips_elf_link_hash_entry *) NULL) | |
3078 | ret = ((struct mips_elf_link_hash_entry *) | |
3079 | bfd_hash_allocate (table, | |
3080 | sizeof (struct mips_elf_link_hash_entry))); | |
3081 | if (ret == (struct mips_elf_link_hash_entry *) NULL) | |
a9713b91 | 3082 | return (struct bfd_hash_entry *) ret; |
aac6b32f ILT |
3083 | |
3084 | /* Call the allocation method of the superclass. */ | |
3085 | ret = ((struct mips_elf_link_hash_entry *) | |
3086 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3087 | table, string)); | |
3088 | if (ret != (struct mips_elf_link_hash_entry *) NULL) | |
3089 | { | |
3090 | /* Set local fields. */ | |
3091 | memset (&ret->esym, 0, sizeof (EXTR)); | |
3092 | /* We use -2 as a marker to indicate that the information has | |
3093 | not been set. -1 means there is no associated ifd. */ | |
3094 | ret->esym.ifd = -2; | |
abec70b9 | 3095 | ret->mips_32_relocs = 0; |
e900e695 ILT |
3096 | ret->fn_stub = NULL; |
3097 | ret->need_fn_stub = false; | |
3098 | ret->call_stub = NULL; | |
3099 | ret->call_fp_stub = NULL; | |
aac6b32f ILT |
3100 | } |
3101 | ||
3102 | return (struct bfd_hash_entry *) ret; | |
3103 | } | |
3104 | ||
3105 | /* Create a MIPS ELF linker hash table. */ | |
3106 | ||
3107 | static struct bfd_link_hash_table * | |
3108 | mips_elf_link_hash_table_create (abfd) | |
3109 | bfd *abfd; | |
3110 | { | |
3111 | struct mips_elf_link_hash_table *ret; | |
5b3b9ff6 | 3112 | unsigned int i; |
aac6b32f ILT |
3113 | |
3114 | ret = ((struct mips_elf_link_hash_table *) | |
3115 | bfd_alloc (abfd, sizeof (struct mips_elf_link_hash_table))); | |
3116 | if (ret == (struct mips_elf_link_hash_table *) NULL) | |
a9713b91 | 3117 | return NULL; |
aac6b32f ILT |
3118 | |
3119 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
3120 | mips_elf_link_hash_newfunc)) | |
3121 | { | |
3122 | bfd_release (abfd, ret); | |
3123 | return NULL; | |
3124 | } | |
3125 | ||
5b3b9ff6 ILT |
3126 | for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) |
3127 | ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; | |
3128 | ret->procedure_count = 0; | |
53787b23 | 3129 | ret->compact_rel_size = 0; |
eb52b9dc ILT |
3130 | ret->use_rld_obj_head = false; |
3131 | ret->rld_value = 0; | |
e900e695 | 3132 | ret->mips16_stubs_seen = false; |
5b3b9ff6 | 3133 | |
aac6b32f ILT |
3134 | return &ret->root.root; |
3135 | } | |
3136 | ||
3137 | /* Hook called by the linker routine which adds symbols from an object | |
3138 | file. We must handle the special MIPS section numbers here. */ | |
3139 | ||
3140 | /*ARGSUSED*/ | |
6e07e54f | 3141 | static boolean |
aac6b32f ILT |
3142 | mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
3143 | bfd *abfd; | |
3144 | struct bfd_link_info *info; | |
3145 | const Elf_Internal_Sym *sym; | |
3146 | const char **namep; | |
3147 | flagword *flagsp; | |
3148 | asection **secp; | |
3149 | bfd_vma *valp; | |
3150 | { | |
53787b23 ILT |
3151 | if (SGI_COMPAT (abfd) |
3152 | && (abfd->flags & DYNAMIC) != 0 | |
3153 | && strcmp (*namep, "_rld_new_interface") == 0) | |
3154 | { | |
3155 | /* Skip Irix 5 rld entry name. */ | |
3156 | *namep = NULL; | |
3157 | return true; | |
3158 | } | |
3159 | ||
aac6b32f ILT |
3160 | switch (sym->st_shndx) |
3161 | { | |
3162 | case SHN_COMMON: | |
3163 | /* Common symbols less than the GP size are automatically | |
3164 | treated as SHN_MIPS_SCOMMON symbols. */ | |
3165 | if (sym->st_size > elf_gp_size (abfd)) | |
3166 | break; | |
3167 | /* Fall through. */ | |
3168 | case SHN_MIPS_SCOMMON: | |
3169 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
3170 | (*secp)->flags |= SEC_IS_COMMON; | |
3171 | *valp = sym->st_size; | |
3172 | break; | |
3173 | ||
5b3b9ff6 ILT |
3174 | case SHN_MIPS_TEXT: |
3175 | /* This section is used in a shared object. */ | |
3176 | if (mips_elf_text_section_ptr == NULL) | |
3177 | { | |
3178 | /* Initialize the section. */ | |
3179 | mips_elf_text_section.name = ".text"; | |
3180 | mips_elf_text_section.flags = SEC_NO_FLAGS; | |
3181 | mips_elf_text_section.output_section = NULL; | |
3182 | mips_elf_text_section.owner = abfd; | |
3183 | mips_elf_text_section.symbol = &mips_elf_text_symbol; | |
3184 | mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr; | |
3185 | mips_elf_text_symbol.name = ".text"; | |
3186 | mips_elf_text_symbol.flags = BSF_SECTION_SYM; | |
3187 | mips_elf_text_symbol.section = &mips_elf_text_section; | |
3188 | mips_elf_text_symbol_ptr = &mips_elf_text_symbol; | |
3189 | mips_elf_text_section_ptr = &mips_elf_text_section; | |
3190 | } | |
3191 | if (info->shared) | |
3192 | *secp = bfd_und_section_ptr; | |
3193 | else | |
3194 | *secp = mips_elf_text_section_ptr; | |
3195 | break; | |
3196 | ||
53787b23 ILT |
3197 | case SHN_MIPS_ACOMMON: |
3198 | /* Fall through. XXX Can we treat this as allocated data? */ | |
5b3b9ff6 ILT |
3199 | case SHN_MIPS_DATA: |
3200 | /* This section is used in a shared object. */ | |
3201 | if (mips_elf_data_section_ptr == NULL) | |
3202 | { | |
3203 | /* Initialize the section. */ | |
3204 | mips_elf_data_section.name = ".data"; | |
3205 | mips_elf_data_section.flags = SEC_NO_FLAGS; | |
3206 | mips_elf_data_section.output_section = NULL; | |
3207 | mips_elf_data_section.owner = abfd; | |
3208 | mips_elf_data_section.symbol = &mips_elf_data_symbol; | |
3209 | mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr; | |
3210 | mips_elf_data_symbol.name = ".data"; | |
3211 | mips_elf_data_symbol.flags = BSF_SECTION_SYM; | |
3212 | mips_elf_data_symbol.section = &mips_elf_data_section; | |
3213 | mips_elf_data_symbol_ptr = &mips_elf_data_symbol; | |
3214 | mips_elf_data_section_ptr = &mips_elf_data_section; | |
3215 | } | |
3216 | if (info->shared) | |
3217 | *secp = bfd_und_section_ptr; | |
3218 | else | |
3219 | *secp = mips_elf_data_section_ptr; | |
3220 | break; | |
3221 | ||
aac6b32f | 3222 | case SHN_MIPS_SUNDEFINED: |
24f13b03 | 3223 | *secp = bfd_und_section_ptr; |
aac6b32f ILT |
3224 | break; |
3225 | } | |
3226 | ||
eb52b9dc ILT |
3227 | if (SGI_COMPAT (abfd) |
3228 | && ! info->shared | |
3229 | && info->hash->creator == abfd->xvec | |
3230 | && strcmp (*namep, "__rld_obj_head") == 0) | |
3231 | { | |
3232 | struct elf_link_hash_entry *h; | |
3233 | ||
3234 | /* Mark __rld_obj_head as dynamic. */ | |
3235 | h = NULL; | |
3236 | if (! (_bfd_generic_link_add_one_symbol | |
3237 | (info, abfd, *namep, BSF_GLOBAL, *secp, | |
3238 | (bfd_vma) *valp, (const char *) NULL, false, | |
3239 | get_elf_backend_data (abfd)->collect, | |
3240 | (struct bfd_link_hash_entry **) &h))) | |
3241 | return false; | |
3242 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
3243 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
3244 | h->type = STT_OBJECT; | |
3245 | ||
3246 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
3247 | return false; | |
3248 | ||
3249 | mips_elf_hash_table (info)->use_rld_obj_head = true; | |
3250 | } | |
3251 | ||
e4f4813f ILT |
3252 | /* If this is a mips16 text symbol, add 1 to the value to make it |
3253 | odd. This will cause something like .word SYM to come up with | |
3254 | the right value when it is loaded into the PC. */ | |
3255 | if (sym->st_other == STO_MIPS16) | |
3256 | ++*valp; | |
3257 | ||
aac6b32f ILT |
3258 | return true; |
3259 | } | |
3260 | ||
3261 | /* Structure used to pass information to mips_elf_output_extsym. */ | |
3262 | ||
3263 | struct extsym_info | |
6e07e54f | 3264 | { |
aac6b32f ILT |
3265 | bfd *abfd; |
3266 | struct bfd_link_info *info; | |
3267 | struct ecoff_debug_info *debug; | |
9783e04a | 3268 | const struct ecoff_debug_swap *swap; |
aac6b32f ILT |
3269 | boolean failed; |
3270 | }; | |
9783e04a | 3271 | |
aac6b32f ILT |
3272 | /* This routine is used to write out ECOFF debugging external symbol |
3273 | information. It is called via mips_elf_link_hash_traverse. The | |
3274 | ECOFF external symbol information must match the ELF external | |
3275 | symbol information. Unfortunately, at this point we don't know | |
3276 | whether a symbol is required by reloc information, so the two | |
3277 | tables may wind up being different. We must sort out the external | |
3278 | symbol information before we can set the final size of the .mdebug | |
3279 | section, and we must set the size of the .mdebug section before we | |
3280 | can relocate any sections, and we can't know which symbols are | |
3281 | required by relocation until we relocate the sections. | |
3282 | Fortunately, it is relatively unlikely that any symbol will be | |
3283 | stripped but required by a reloc. In particular, it can not happen | |
3284 | when generating a final executable. */ | |
3285 | ||
3286 | static boolean | |
3287 | mips_elf_output_extsym (h, data) | |
3288 | struct mips_elf_link_hash_entry *h; | |
3289 | PTR data; | |
3290 | { | |
3291 | struct extsym_info *einfo = (struct extsym_info *) data; | |
3292 | boolean strip; | |
5b3b9ff6 | 3293 | asection *sec, *output_section; |
aac6b32f ILT |
3294 | |
3295 | if (h->root.indx == -2) | |
3296 | strip = false; | |
3297 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
3298 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) | |
3299 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3300 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
3301 | strip = true; | |
3302 | else if (einfo->info->strip == strip_all | |
3303 | || (einfo->info->strip == strip_some | |
3304 | && bfd_hash_lookup (einfo->info->keep_hash, | |
3305 | h->root.root.root.string, | |
3306 | false, false) == NULL)) | |
3307 | strip = true; | |
3308 | else | |
3309 | strip = false; | |
3310 | ||
3311 | if (strip) | |
3312 | return true; | |
6e07e54f | 3313 | |
aac6b32f | 3314 | if (h->esym.ifd == -2) |
6e07e54f | 3315 | { |
aac6b32f ILT |
3316 | h->esym.jmptbl = 0; |
3317 | h->esym.cobol_main = 0; | |
3318 | h->esym.weakext = 0; | |
3319 | h->esym.reserved = 0; | |
3320 | h->esym.ifd = ifdNil; | |
3321 | h->esym.asym.value = 0; | |
3322 | h->esym.asym.st = stGlobal; | |
3323 | ||
5b3b9ff6 ILT |
3324 | if (SGI_COMPAT (einfo->abfd) |
3325 | && (h->root.root.type == bfd_link_hash_undefined | |
3326 | || h->root.root.type == bfd_link_hash_undefweak)) | |
3327 | { | |
3328 | const char *name; | |
3329 | ||
3330 | /* Use undefined class. Also, set class and type for some | |
3331 | special symbols. */ | |
3332 | name = h->root.root.root.string; | |
3333 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
3334 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
3335 | { | |
3336 | h->esym.asym.sc = scData; | |
3337 | h->esym.asym.st = stLabel; | |
3338 | h->esym.asym.value = 0; | |
3339 | } | |
3340 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
3341 | { | |
3342 | h->esym.asym.sc = scAbs; | |
3343 | h->esym.asym.st = stLabel; | |
3344 | h->esym.asym.value = | |
3345 | mips_elf_hash_table (einfo->info)->procedure_count; | |
3346 | } | |
3347 | else if (strcmp (name, "_gp_disp") == 0) | |
3348 | { | |
3349 | h->esym.asym.sc = scAbs; | |
3350 | h->esym.asym.st = stLabel; | |
3351 | h->esym.asym.value = elf_gp (einfo->abfd); | |
3352 | } | |
3353 | else | |
3354 | h->esym.asym.sc = scUndefined; | |
3355 | } | |
3356 | else if (h->root.root.type != bfd_link_hash_defined | |
a16fcab3 | 3357 | && h->root.root.type != bfd_link_hash_defweak) |
aac6b32f ILT |
3358 | h->esym.asym.sc = scAbs; |
3359 | else | |
3360 | { | |
aac6b32f ILT |
3361 | const char *name; |
3362 | ||
5b3b9ff6 ILT |
3363 | sec = h->root.root.u.def.section; |
3364 | output_section = sec->output_section; | |
3365 | ||
3366 | /* When making a shared library and symbol h is the one from | |
3367 | the another shared library, OUTPUT_SECTION may be null. */ | |
3368 | if (output_section == NULL) | |
3369 | h->esym.asym.sc = scUndefined; | |
aac6b32f | 3370 | else |
5b3b9ff6 ILT |
3371 | { |
3372 | name = bfd_section_name (output_section->owner, output_section); | |
ff12f303 | 3373 | |
5b3b9ff6 ILT |
3374 | if (strcmp (name, ".text") == 0) |
3375 | h->esym.asym.sc = scText; | |
3376 | else if (strcmp (name, ".data") == 0) | |
3377 | h->esym.asym.sc = scData; | |
3378 | else if (strcmp (name, ".sdata") == 0) | |
3379 | h->esym.asym.sc = scSData; | |
3380 | else if (strcmp (name, ".rodata") == 0 | |
3381 | || strcmp (name, ".rdata") == 0) | |
3382 | h->esym.asym.sc = scRData; | |
3383 | else if (strcmp (name, ".bss") == 0) | |
3384 | h->esym.asym.sc = scBss; | |
3385 | else if (strcmp (name, ".sbss") == 0) | |
3386 | h->esym.asym.sc = scSBss; | |
3387 | else if (strcmp (name, ".init") == 0) | |
3388 | h->esym.asym.sc = scInit; | |
3389 | else if (strcmp (name, ".fini") == 0) | |
3390 | h->esym.asym.sc = scFini; | |
3391 | else | |
3392 | h->esym.asym.sc = scAbs; | |
3393 | } | |
aac6b32f ILT |
3394 | } |
3395 | ||
3396 | h->esym.asym.reserved = 0; | |
3397 | h->esym.asym.index = indexNil; | |
6e07e54f ILT |
3398 | } |
3399 | ||
16fe8950 ILT |
3400 | if (h->root.root.type == bfd_link_hash_common) |
3401 | h->esym.asym.value = h->root.root.u.c.size; | |
a16fcab3 KR |
3402 | else if (h->root.root.type == bfd_link_hash_defined |
3403 | || h->root.root.type == bfd_link_hash_defweak) | |
16fe8950 | 3404 | { |
16fe8950 ILT |
3405 | if (h->esym.asym.sc == scCommon) |
3406 | h->esym.asym.sc = scBss; | |
3407 | else if (h->esym.asym.sc == scSCommon) | |
3408 | h->esym.asym.sc = scSBss; | |
3409 | ||
3410 | sec = h->root.root.u.def.section; | |
5b3b9ff6 ILT |
3411 | output_section = sec->output_section; |
3412 | if (output_section != NULL) | |
3413 | h->esym.asym.value = (h->root.root.u.def.value | |
3414 | + sec->output_offset | |
3415 | + output_section->vma); | |
3416 | else | |
3417 | h->esym.asym.value = 0; | |
16fe8950 | 3418 | } |
5b3b9ff6 ILT |
3419 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) |
3420 | { | |
3421 | /* Set type and value for a symbol with a function stub. */ | |
3422 | h->esym.asym.st = stProc; | |
3423 | sec = h->root.root.u.def.section; | |
3424 | if (sec == NULL) | |
3425 | h->esym.asym.value = 0; | |
3426 | else | |
3427 | { | |
3428 | output_section = sec->output_section; | |
3429 | if (output_section != NULL) | |
3430 | h->esym.asym.value = (h->root.plt_offset | |
3431 | + sec->output_offset | |
3432 | + output_section->vma); | |
3433 | else | |
3434 | h->esym.asym.value = 0; | |
3435 | } | |
3436 | #if 0 /* FIXME? */ | |
3437 | h->esym.ifd = 0; | |
3438 | #endif | |
ff12f303 | 3439 | } |
aac6b32f ILT |
3440 | |
3441 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
3442 | h->root.root.root.string, | |
3443 | &h->esym)) | |
3444 | { | |
3445 | einfo->failed = true; | |
3446 | return false; | |
3447 | } | |
6e07e54f ILT |
3448 | |
3449 | return true; | |
3450 | } | |
3451 | ||
5b3b9ff6 ILT |
3452 | /* Create a runtime procedure table from the .mdebug section. */ |
3453 | ||
3454 | static boolean | |
3455 | mips_elf_create_procedure_table (handle, abfd, info, s, debug) | |
3456 | PTR handle; | |
3457 | bfd *abfd; | |
3458 | struct bfd_link_info *info; | |
3459 | asection *s; | |
3460 | struct ecoff_debug_info *debug; | |
3461 | { | |
3462 | const struct ecoff_debug_swap *swap; | |
3463 | HDRR *hdr = &debug->symbolic_header; | |
3464 | RPDR *rpdr, *rp; | |
3465 | struct rpdr_ext *erp; | |
3466 | PTR rtproc; | |
3467 | struct pdr_ext *epdr; | |
3468 | struct sym_ext *esym; | |
3469 | char *ss, **sv; | |
3470 | char *str; | |
3471 | unsigned long size, count; | |
3472 | unsigned long sindex; | |
3473 | unsigned long i; | |
3474 | PDR pdr; | |
3475 | SYMR sym; | |
3476 | const char *no_name_func = "static procedure (no name)"; | |
3477 | ||
3478 | epdr = NULL; | |
3479 | rpdr = NULL; | |
3480 | esym = NULL; | |
3481 | ss = NULL; | |
abec70b9 | 3482 | sv = NULL; |
5b3b9ff6 ILT |
3483 | |
3484 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3485 | ||
3486 | sindex = strlen (no_name_func) + 1; | |
3487 | count = hdr->ipdMax; | |
3488 | if (count > 0) | |
3489 | { | |
3490 | size = swap->external_pdr_size; | |
3491 | ||
3492 | epdr = (struct pdr_ext *) bfd_malloc (size * count); | |
3493 | if (epdr == NULL) | |
3494 | goto error_return; | |
3495 | ||
3496 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr)) | |
3497 | goto error_return; | |
3498 | ||
3499 | size = sizeof (RPDR); | |
3500 | rp = rpdr = (RPDR *) bfd_malloc (size * count); | |
3501 | if (rpdr == NULL) | |
3502 | goto error_return; | |
3503 | ||
3504 | sv = (char **) bfd_malloc (sizeof (char *) * count); | |
3505 | if (sv == NULL) | |
3506 | goto error_return; | |
3507 | ||
3508 | count = hdr->isymMax; | |
3509 | size = swap->external_sym_size; | |
3510 | esym = (struct sym_ext *) bfd_malloc (size * count); | |
3511 | if (esym == NULL) | |
3512 | goto error_return; | |
3513 | ||
3514 | if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym)) | |
3515 | goto error_return; | |
3516 | ||
3517 | count = hdr->issMax; | |
3518 | ss = (char *) bfd_malloc (count); | |
3519 | if (ss == NULL) | |
3520 | goto error_return; | |
3521 | if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss)) | |
3522 | goto error_return; | |
3523 | ||
3524 | count = hdr->ipdMax; | |
abec70b9 | 3525 | for (i = 0; i < count; i++, rp++) |
5b3b9ff6 | 3526 | { |
abec70b9 | 3527 | (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr); |
5b3b9ff6 ILT |
3528 | (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym); |
3529 | rp->adr = sym.value; | |
3530 | rp->regmask = pdr.regmask; | |
3531 | rp->regoffset = pdr.regoffset; | |
3532 | rp->fregmask = pdr.fregmask; | |
3533 | rp->fregoffset = pdr.fregoffset; | |
3534 | rp->frameoffset = pdr.frameoffset; | |
3535 | rp->framereg = pdr.framereg; | |
3536 | rp->pcreg = pdr.pcreg; | |
3537 | rp->irpss = sindex; | |
3538 | sv[i] = ss + sym.iss; | |
3539 | sindex += strlen (sv[i]) + 1; | |
3540 | } | |
3541 | } | |
3542 | ||
3543 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
3544 | size = BFD_ALIGN (size, 16); | |
3545 | rtproc = (PTR) bfd_alloc (abfd, size); | |
3546 | if (rtproc == NULL) | |
3547 | { | |
3548 | mips_elf_hash_table (info)->procedure_count = 0; | |
3549 | goto error_return; | |
3550 | } | |
3551 | ||
3552 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
3553 | ||
3554 | erp = (struct rpdr_ext *) rtproc; | |
abec70b9 | 3555 | memset (erp, 0, sizeof (struct rpdr_ext)); |
5b3b9ff6 ILT |
3556 | erp++; |
3557 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
3558 | strcpy (str, no_name_func); | |
3559 | str += strlen (no_name_func) + 1; | |
3560 | for (i = 0; i < count; i++) | |
3561 | { | |
3562 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
3563 | strcpy (str, sv[i]); | |
3564 | str += strlen (sv[i]) + 1; | |
3565 | } | |
3566 | ecoff_put_off (abfd, (bfd_vma) -1, (bfd_byte *) (erp + count)->p_adr); | |
3567 | ||
3568 | /* Set the size and contents of .rtproc section. */ | |
3569 | s->_raw_size = size; | |
3570 | s->contents = rtproc; | |
3571 | ||
3572 | /* Skip this section later on (I don't think this currently | |
3573 | matters, but someday it might). */ | |
3574 | s->link_order_head = (struct bfd_link_order *) NULL; | |
3575 | ||
abec70b9 ILT |
3576 | if (epdr != NULL) |
3577 | free (epdr); | |
3578 | if (rpdr != NULL) | |
3579 | free (rpdr); | |
3580 | if (esym != NULL) | |
3581 | free (esym); | |
3582 | if (ss != NULL) | |
3583 | free (ss); | |
3584 | if (sv != NULL) | |
3585 | free (sv); | |
5b3b9ff6 ILT |
3586 | |
3587 | return true; | |
3588 | ||
3589 | error_return: | |
3590 | if (epdr != NULL) | |
3591 | free (epdr); | |
3592 | if (rpdr != NULL) | |
3593 | free (rpdr); | |
3594 | if (esym != NULL) | |
3595 | free (esym); | |
3596 | if (ss != NULL) | |
3597 | free (ss); | |
3598 | if (sv != NULL) | |
3599 | free (sv); | |
3600 | return false; | |
3601 | } | |
3602 | ||
aac6b32f | 3603 | /* A comparison routine used to sort .gptab entries. */ |
6e07e54f | 3604 | |
aac6b32f ILT |
3605 | static int |
3606 | gptab_compare (p1, p2) | |
3607 | const PTR p1; | |
3608 | const PTR p2; | |
6e07e54f | 3609 | { |
aac6b32f ILT |
3610 | const Elf32_gptab *a1 = (const Elf32_gptab *) p1; |
3611 | const Elf32_gptab *a2 = (const Elf32_gptab *) p2; | |
3612 | ||
3613 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
6e07e54f ILT |
3614 | } |
3615 | ||
3616 | /* We need to use a special link routine to handle the .reginfo and | |
3617 | the .mdebug sections. We need to merge all instances of these | |
3618 | sections together, not write them all out sequentially. */ | |
3619 | ||
3620 | static boolean | |
3621 | mips_elf_final_link (abfd, info) | |
3622 | bfd *abfd; | |
3623 | struct bfd_link_info *info; | |
3624 | { | |
6e07e54f ILT |
3625 | asection **secpp; |
3626 | asection *o; | |
3627 | struct bfd_link_order *p; | |
aac6b32f | 3628 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; |
5b3b9ff6 | 3629 | asection *rtproc_sec; |
b3c0fc57 | 3630 | Elf32_RegInfo reginfo; |
6e07e54f ILT |
3631 | struct ecoff_debug_info debug; |
3632 | const struct ecoff_debug_swap *swap | |
3633 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3634 | HDRR *symhdr = &debug.symbolic_header; | |
9783e04a | 3635 | PTR mdebug_handle = NULL; |
6e07e54f | 3636 | |
497c5434 | 3637 | /* Drop the .options section, since it has special semantics which I |
aac6b32f ILT |
3638 | haven't bothered to figure out. */ |
3639 | for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) | |
6e07e54f | 3640 | { |
aac6b32f | 3641 | if (strcmp ((*secpp)->name, ".options") == 0) |
6e07e54f | 3642 | { |
aac6b32f ILT |
3643 | for (p = (*secpp)->link_order_head; p != NULL; p = p->next) |
3644 | if (p->type == bfd_indirect_link_order) | |
3645 | p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS; | |
3646 | (*secpp)->link_order_head = NULL; | |
6e07e54f ILT |
3647 | *secpp = (*secpp)->next; |
3648 | --abfd->section_count; | |
aac6b32f | 3649 | break; |
6e07e54f | 3650 | } |
6e07e54f | 3651 | } |
b3c0fc57 | 3652 | |
5b3b9ff6 ILT |
3653 | /* Get a value for the GP register. */ |
3654 | if (elf_gp (abfd) == 0) | |
b3c0fc57 | 3655 | { |
5b3b9ff6 ILT |
3656 | struct bfd_link_hash_entry *h; |
3657 | ||
3658 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); | |
3659 | if (h != (struct bfd_link_hash_entry *) NULL | |
3660 | && h->type == bfd_link_hash_defined) | |
3661 | elf_gp (abfd) = (h->u.def.value | |
3662 | + h->u.def.section->output_section->vma | |
3663 | + h->u.def.section->output_offset); | |
3664 | else if (info->relocateable) | |
b3c0fc57 | 3665 | { |
5b3b9ff6 | 3666 | bfd_vma lo; |
b3c0fc57 | 3667 | |
5b3b9ff6 ILT |
3668 | /* Make up a value. */ |
3669 | lo = (bfd_vma) -1; | |
3670 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3671 | { | |
3672 | if (o->vma < lo | |
3673 | && (strcmp (o->name, ".sbss") == 0 | |
3674 | || strcmp (o->name, ".sdata") == 0 | |
3675 | || strcmp (o->name, ".lit4") == 0 | |
3676 | || strcmp (o->name, ".lit8") == 0)) | |
3677 | lo = o->vma; | |
3678 | } | |
3679 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd); | |
3680 | } | |
3681 | else | |
3682 | { | |
3683 | /* If the relocate_section function needs to do a reloc | |
3684 | involving the GP value, it should make a reloc_dangerous | |
3685 | callback to warn that GP is not defined. */ | |
3686 | } | |
3687 | } | |
3688 | ||
3689 | /* Go through the sections and collect the .reginfo and .mdebug | |
3690 | information. */ | |
3691 | reginfo_sec = NULL; | |
3692 | mdebug_sec = NULL; | |
3693 | gptab_data_sec = NULL; | |
3694 | gptab_bss_sec = NULL; | |
3695 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3696 | { | |
3697 | if (strcmp (o->name, ".reginfo") == 0) | |
3698 | { | |
3699 | memset (®info, 0, sizeof reginfo); | |
3700 | ||
3701 | /* We have found the .reginfo section in the output file. | |
3702 | Look through all the link_orders comprising it and merge | |
3703 | the information together. */ | |
3704 | for (p = o->link_order_head; | |
3705 | p != (struct bfd_link_order *) NULL; | |
3706 | p = p->next) | |
3707 | { | |
3708 | asection *input_section; | |
6e07e54f ILT |
3709 | bfd *input_bfd; |
3710 | Elf32_External_RegInfo ext; | |
3711 | Elf32_RegInfo sub; | |
3712 | ||
3713 | if (p->type != bfd_indirect_link_order) | |
aac6b32f ILT |
3714 | { |
3715 | if (p->type == bfd_fill_link_order) | |
3716 | continue; | |
3717 | abort (); | |
3718 | } | |
6e07e54f ILT |
3719 | |
3720 | input_section = p->u.indirect.section; | |
3721 | input_bfd = input_section->owner; | |
a16fcab3 KR |
3722 | |
3723 | /* The linker emulation code has probably clobbered the | |
3724 | size to be zero bytes. */ | |
3725 | if (input_section->_raw_size == 0) | |
3726 | input_section->_raw_size = sizeof (Elf32_External_RegInfo); | |
3727 | ||
6e07e54f ILT |
3728 | if (! bfd_get_section_contents (input_bfd, input_section, |
3729 | (PTR) &ext, | |
3730 | (file_ptr) 0, | |
3731 | sizeof ext)) | |
3732 | return false; | |
3733 | ||
3734 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
3735 | ||
3736 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
3737 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
3738 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
3739 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
3740 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
3741 | ||
3742 | /* ri_gp_value is set by the function | |
00176555 | 3743 | mips_elf32_section_processing when the section is |
6e07e54f | 3744 | finally written out. */ |
aac6b32f ILT |
3745 | |
3746 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
3747 | elf_link_input_bfd ignores this section. */ | |
3748 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
6e07e54f ILT |
3749 | } |
3750 | ||
3751 | /* Force the section size to the value we want. */ | |
3752 | o->_raw_size = sizeof (Elf32_External_RegInfo); | |
3753 | ||
aac6b32f ILT |
3754 | /* Skip this section later on (I don't think this currently |
3755 | matters, but someday it might). */ | |
6e07e54f ILT |
3756 | o->link_order_head = (struct bfd_link_order *) NULL; |
3757 | ||
3758 | reginfo_sec = o; | |
3759 | } | |
3760 | ||
3761 | if (strcmp (o->name, ".mdebug") == 0) | |
3762 | { | |
aac6b32f ILT |
3763 | struct extsym_info einfo; |
3764 | ||
6e07e54f ILT |
3765 | /* We have found the .mdebug section in the output file. |
3766 | Look through all the link_orders comprising it and merge | |
3767 | the information together. */ | |
3768 | symhdr->magic = swap->sym_magic; | |
3769 | /* FIXME: What should the version stamp be? */ | |
3770 | symhdr->vstamp = 0; | |
3771 | symhdr->ilineMax = 0; | |
3772 | symhdr->cbLine = 0; | |
3773 | symhdr->idnMax = 0; | |
3774 | symhdr->ipdMax = 0; | |
3775 | symhdr->isymMax = 0; | |
3776 | symhdr->ioptMax = 0; | |
3777 | symhdr->iauxMax = 0; | |
3778 | symhdr->issMax = 0; | |
3779 | symhdr->issExtMax = 0; | |
3780 | symhdr->ifdMax = 0; | |
3781 | symhdr->crfd = 0; | |
3782 | symhdr->iextMax = 0; | |
3783 | ||
3784 | /* We accumulate the debugging information itself in the | |
3785 | debug_info structure. */ | |
9783e04a DM |
3786 | debug.line = NULL; |
3787 | debug.external_dnr = NULL; | |
3788 | debug.external_pdr = NULL; | |
3789 | debug.external_sym = NULL; | |
3790 | debug.external_opt = NULL; | |
3791 | debug.external_aux = NULL; | |
3792 | debug.ss = NULL; | |
6e07e54f | 3793 | debug.ssext = debug.ssext_end = NULL; |
9783e04a DM |
3794 | debug.external_fdr = NULL; |
3795 | debug.external_rfd = NULL; | |
6e07e54f ILT |
3796 | debug.external_ext = debug.external_ext_end = NULL; |
3797 | ||
9783e04a DM |
3798 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); |
3799 | if (mdebug_handle == (PTR) NULL) | |
3800 | return false; | |
3801 | ||
5b3b9ff6 ILT |
3802 | if (SGI_COMPAT (abfd)) |
3803 | { | |
3804 | asection *s; | |
3805 | EXTR esym; | |
3806 | bfd_vma last; | |
3807 | unsigned int i; | |
3808 | static const char * const name[] = | |
3809 | { ".text", ".init", ".fini", ".data", | |
3810 | ".rodata", ".sdata", ".sbss", ".bss" }; | |
3811 | static const int sc[] = { scText, scInit, scFini, scData, | |
3812 | scRData, scSData, scSBss, scBss }; | |
3813 | ||
3814 | esym.jmptbl = 0; | |
3815 | esym.cobol_main = 0; | |
3816 | esym.weakext = 0; | |
3817 | esym.reserved = 0; | |
3818 | esym.ifd = ifdNil; | |
3819 | esym.asym.iss = issNil; | |
3820 | esym.asym.st = stLocal; | |
3821 | esym.asym.reserved = 0; | |
3822 | esym.asym.index = indexNil; | |
3823 | for (i = 0; i < 8; i++) | |
3824 | { | |
3825 | esym.asym.sc = sc[i]; | |
3826 | s = bfd_get_section_by_name (abfd, name[i]); | |
3827 | if (s != NULL) | |
3828 | { | |
3829 | esym.asym.value = s->vma; | |
3830 | last = s->vma + s->_raw_size; | |
3831 | } | |
3832 | else | |
3833 | esym.asym.value = last; | |
ff12f303 | 3834 | |
5b3b9ff6 ILT |
3835 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, |
3836 | name[i], &esym)) | |
3837 | return false; | |
3838 | } | |
3839 | } | |
3840 | ||
6e07e54f ILT |
3841 | for (p = o->link_order_head; |
3842 | p != (struct bfd_link_order *) NULL; | |
3843 | p = p->next) | |
3844 | { | |
3845 | asection *input_section; | |
3846 | bfd *input_bfd; | |
3847 | const struct ecoff_debug_swap *input_swap; | |
3848 | struct ecoff_debug_info input_debug; | |
aac6b32f ILT |
3849 | char *eraw_src; |
3850 | char *eraw_end; | |
6e07e54f ILT |
3851 | |
3852 | if (p->type != bfd_indirect_link_order) | |
aac6b32f ILT |
3853 | { |
3854 | if (p->type == bfd_fill_link_order) | |
3855 | continue; | |
3856 | abort (); | |
3857 | } | |
6e07e54f ILT |
3858 | |
3859 | input_section = p->u.indirect.section; | |
3860 | input_bfd = input_section->owner; | |
3861 | ||
3862 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
3863 | || (get_elf_backend_data (input_bfd) | |
3864 | ->elf_backend_ecoff_debug_swap) == NULL) | |
b3c0fc57 | 3865 | { |
6e07e54f ILT |
3866 | /* I don't know what a non MIPS ELF bfd would be |
3867 | doing with a .mdebug section, but I don't really | |
3868 | want to deal with it. */ | |
3869 | continue; | |
b3c0fc57 | 3870 | } |
6e07e54f ILT |
3871 | |
3872 | input_swap = (get_elf_backend_data (input_bfd) | |
3873 | ->elf_backend_ecoff_debug_swap); | |
3874 | ||
3875 | BFD_ASSERT (p->size == input_section->_raw_size); | |
3876 | ||
3877 | /* The ECOFF linking code expects that we have already | |
3878 | read in the debugging information and set up an | |
3879 | ecoff_debug_info structure, so we do that now. */ | |
00176555 ILT |
3880 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, |
3881 | &input_debug)) | |
6e07e54f ILT |
3882 | return false; |
3883 | ||
3884 | if (! (bfd_ecoff_debug_accumulate | |
9783e04a DM |
3885 | (mdebug_handle, abfd, &debug, swap, input_bfd, |
3886 | &input_debug, input_swap, info))) | |
6e07e54f ILT |
3887 | return false; |
3888 | ||
3889 | /* Loop through the external symbols. For each one with | |
aac6b32f ILT |
3890 | interesting information, try to find the symbol in |
3891 | the linker global hash table and save the information | |
3892 | for the output external symbols. */ | |
3893 | eraw_src = input_debug.external_ext; | |
3894 | eraw_end = (eraw_src | |
3895 | + (input_debug.symbolic_header.iextMax | |
3896 | * input_swap->external_ext_size)); | |
3897 | for (; | |
3898 | eraw_src < eraw_end; | |
3899 | eraw_src += input_swap->external_ext_size) | |
6e07e54f | 3900 | { |
aac6b32f ILT |
3901 | EXTR ext; |
3902 | const char *name; | |
3903 | struct mips_elf_link_hash_entry *h; | |
3904 | ||
3905 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
3906 | if (ext.asym.sc == scNil | |
3907 | || ext.asym.sc == scUndefined | |
3908 | || ext.asym.sc == scSUndefined) | |
3909 | continue; | |
3910 | ||
3911 | name = input_debug.ssext + ext.asym.iss; | |
3912 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
3913 | name, false, false, true); | |
3914 | if (h == NULL || h->esym.ifd != -2) | |
3915 | continue; | |
3916 | ||
3917 | if (ext.ifd != -1) | |
6e07e54f | 3918 | { |
aac6b32f ILT |
3919 | BFD_ASSERT (ext.ifd |
3920 | < input_debug.symbolic_header.ifdMax); | |
3921 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
6e07e54f | 3922 | } |
aac6b32f ILT |
3923 | |
3924 | h->esym = ext; | |
6e07e54f ILT |
3925 | } |
3926 | ||
aac6b32f | 3927 | /* Free up the information we just read. */ |
6e07e54f ILT |
3928 | free (input_debug.line); |
3929 | free (input_debug.external_dnr); | |
3930 | free (input_debug.external_pdr); | |
3931 | free (input_debug.external_sym); | |
3932 | free (input_debug.external_opt); | |
3933 | free (input_debug.external_aux); | |
3934 | free (input_debug.ss); | |
3935 | free (input_debug.ssext); | |
3936 | free (input_debug.external_fdr); | |
3937 | free (input_debug.external_rfd); | |
aac6b32f ILT |
3938 | free (input_debug.external_ext); |
3939 | ||
3940 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
3941 | elf_link_input_bfd ignores this section. */ | |
3942 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
b3c0fc57 ILT |
3943 | } |
3944 | ||
5b3b9ff6 ILT |
3945 | if (SGI_COMPAT (abfd) && info->shared) |
3946 | { | |
3947 | /* Create .rtproc section. */ | |
3948 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
3949 | if (rtproc_sec == NULL) | |
3950 | { | |
3951 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
ff12f303 | 3952 | | SEC_LINKER_CREATED | SEC_READONLY); |
5b3b9ff6 ILT |
3953 | |
3954 | rtproc_sec = bfd_make_section (abfd, ".rtproc"); | |
3955 | if (rtproc_sec == NULL | |
3956 | || ! bfd_set_section_flags (abfd, rtproc_sec, flags) | |
3957 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 12)) | |
3958 | return false; | |
3959 | } | |
3960 | ||
3961 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
3962 | info, rtproc_sec, &debug)) | |
3963 | return false; | |
3964 | } | |
3965 | ||
6e07e54f | 3966 | /* Build the external symbol information. */ |
aac6b32f ILT |
3967 | einfo.abfd = abfd; |
3968 | einfo.info = info; | |
3969 | einfo.debug = &debug; | |
3970 | einfo.swap = swap; | |
3971 | einfo.failed = false; | |
3972 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
3973 | mips_elf_output_extsym, | |
3974 | (PTR) &einfo); | |
3975 | if (einfo.failed) | |
b3c0fc57 ILT |
3976 | return false; |
3977 | ||
aac6b32f | 3978 | /* Set the size of the .mdebug section. */ |
6e07e54f ILT |
3979 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); |
3980 | ||
aac6b32f ILT |
3981 | /* Skip this section later on (I don't think this currently |
3982 | matters, but someday it might). */ | |
6e07e54f ILT |
3983 | o->link_order_head = (struct bfd_link_order *) NULL; |
3984 | ||
3985 | mdebug_sec = o; | |
3986 | } | |
6e07e54f | 3987 | |
aac6b32f | 3988 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) |
6e07e54f | 3989 | { |
aac6b32f ILT |
3990 | const char *subname; |
3991 | unsigned int c; | |
3992 | Elf32_gptab *tab; | |
3993 | Elf32_External_gptab *ext_tab; | |
3994 | unsigned int i; | |
3995 | ||
3996 | /* The .gptab.sdata and .gptab.sbss sections hold | |
3997 | information describing how the small data area would | |
3998 | change depending upon the -G switch. These sections | |
3999 | not used in executables files. */ | |
4000 | if (! info->relocateable) | |
4001 | { | |
4002 | asection **secpp; | |
4003 | ||
4004 | for (p = o->link_order_head; | |
4005 | p != (struct bfd_link_order *) NULL; | |
4006 | p = p->next) | |
4007 | { | |
4008 | asection *input_section; | |
4009 | ||
4010 | if (p->type != bfd_indirect_link_order) | |
4011 | { | |
4012 | if (p->type == bfd_fill_link_order) | |
4013 | continue; | |
4014 | abort (); | |
4015 | } | |
4016 | ||
4017 | input_section = p->u.indirect.section; | |
4018 | ||
4019 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4020 | elf_link_input_bfd ignores this section. */ | |
4021 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4022 | } | |
4023 | ||
4024 | /* Skip this section later on (I don't think this | |
4025 | currently matters, but someday it might). */ | |
4026 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4027 | ||
4028 | /* Really remove the section. */ | |
4029 | for (secpp = &abfd->sections; | |
4030 | *secpp != o; | |
4031 | secpp = &(*secpp)->next) | |
4032 | ; | |
4033 | *secpp = (*secpp)->next; | |
4034 | --abfd->section_count; | |
4035 | ||
4036 | continue; | |
4037 | } | |
4038 | ||
4039 | /* There is one gptab for initialized data, and one for | |
4040 | uninitialized data. */ | |
4041 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
4042 | gptab_data_sec = o; | |
4043 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
4044 | gptab_bss_sec = o; | |
4045 | else | |
4046 | { | |
a9713b91 ILT |
4047 | (*_bfd_error_handler) |
4048 | ("%s: illegal section name `%s'", | |
4049 | bfd_get_filename (abfd), o->name); | |
aac6b32f ILT |
4050 | bfd_set_error (bfd_error_nonrepresentable_section); |
4051 | return false; | |
4052 | } | |
4053 | ||
4054 | /* The linker script always combines .gptab.data and | |
4055 | .gptab.sdata into .gptab.sdata, and likewise for | |
4056 | .gptab.bss and .gptab.sbss. It is possible that there is | |
4057 | no .sdata or .sbss section in the output file, in which | |
4058 | case we must change the name of the output section. */ | |
4059 | subname = o->name + sizeof ".gptab" - 1; | |
4060 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
4061 | { | |
4062 | if (o == gptab_data_sec) | |
4063 | o->name = ".gptab.data"; | |
4064 | else | |
4065 | o->name = ".gptab.bss"; | |
4066 | subname = o->name + sizeof ".gptab" - 1; | |
4067 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
4068 | } | |
4069 | ||
4070 | /* Set up the first entry. */ | |
4071 | c = 1; | |
5b3b9ff6 | 4072 | tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab)); |
aac6b32f | 4073 | if (tab == NULL) |
5b3b9ff6 | 4074 | return false; |
aac6b32f ILT |
4075 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
4076 | tab[0].gt_header.gt_unused = 0; | |
4077 | ||
4078 | /* Combine the input sections. */ | |
6e07e54f ILT |
4079 | for (p = o->link_order_head; |
4080 | p != (struct bfd_link_order *) NULL; | |
4081 | p = p->next) | |
4082 | { | |
aac6b32f ILT |
4083 | asection *input_section; |
4084 | bfd *input_bfd; | |
4085 | bfd_size_type size; | |
4086 | unsigned long last; | |
4087 | bfd_size_type gpentry; | |
4088 | ||
4089 | if (p->type != bfd_indirect_link_order) | |
6e07e54f | 4090 | { |
aac6b32f ILT |
4091 | if (p->type == bfd_fill_link_order) |
4092 | continue; | |
4093 | abort (); | |
4094 | } | |
6e07e54f | 4095 | |
aac6b32f ILT |
4096 | input_section = p->u.indirect.section; |
4097 | input_bfd = input_section->owner; | |
4098 | ||
4099 | /* Combine the gptab entries for this input section one | |
4100 | by one. We know that the input gptab entries are | |
4101 | sorted by ascending -G value. */ | |
4102 | size = bfd_section_size (input_bfd, input_section); | |
4103 | last = 0; | |
4104 | for (gpentry = sizeof (Elf32_External_gptab); | |
4105 | gpentry < size; | |
4106 | gpentry += sizeof (Elf32_External_gptab)) | |
4107 | { | |
4108 | Elf32_External_gptab ext_gptab; | |
4109 | Elf32_gptab int_gptab; | |
4110 | unsigned long val; | |
4111 | unsigned long add; | |
4112 | boolean exact; | |
4113 | unsigned int look; | |
4114 | ||
4115 | if (! (bfd_get_section_contents | |
4116 | (input_bfd, input_section, (PTR) &ext_gptab, | |
4117 | gpentry, sizeof (Elf32_External_gptab)))) | |
9783e04a | 4118 | { |
aac6b32f | 4119 | free (tab); |
9783e04a DM |
4120 | return false; |
4121 | } | |
aac6b32f ILT |
4122 | |
4123 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
4124 | &int_gptab); | |
4125 | val = int_gptab.gt_entry.gt_g_value; | |
4126 | add = int_gptab.gt_entry.gt_bytes - last; | |
4127 | ||
4128 | exact = false; | |
4129 | for (look = 1; look < c; look++) | |
4130 | { | |
4131 | if (tab[look].gt_entry.gt_g_value >= val) | |
4132 | tab[look].gt_entry.gt_bytes += add; | |
4133 | ||
4134 | if (tab[look].gt_entry.gt_g_value == val) | |
4135 | exact = true; | |
4136 | } | |
4137 | ||
4138 | if (! exact) | |
4139 | { | |
4140 | Elf32_gptab *new_tab; | |
4141 | unsigned int max; | |
4142 | ||
4143 | /* We need a new table entry. */ | |
4144 | new_tab = ((Elf32_gptab *) | |
5b3b9ff6 ILT |
4145 | bfd_realloc ((PTR) tab, |
4146 | (c + 1) * sizeof (Elf32_gptab))); | |
aac6b32f ILT |
4147 | if (new_tab == NULL) |
4148 | { | |
aac6b32f ILT |
4149 | free (tab); |
4150 | return false; | |
4151 | } | |
4152 | tab = new_tab; | |
4153 | tab[c].gt_entry.gt_g_value = val; | |
4154 | tab[c].gt_entry.gt_bytes = add; | |
4155 | ||
4156 | /* Merge in the size for the next smallest -G | |
4157 | value, since that will be implied by this new | |
4158 | value. */ | |
4159 | max = 0; | |
4160 | for (look = 1; look < c; look++) | |
4161 | { | |
4162 | if (tab[look].gt_entry.gt_g_value < val | |
4163 | && (max == 0 | |
4164 | || (tab[look].gt_entry.gt_g_value | |
4165 | > tab[max].gt_entry.gt_g_value))) | |
4166 | max = look; | |
4167 | } | |
4168 | if (max != 0) | |
4169 | tab[c].gt_entry.gt_bytes += | |
4170 | tab[max].gt_entry.gt_bytes; | |
4171 | ||
4172 | ++c; | |
4173 | } | |
4174 | ||
4175 | last = int_gptab.gt_entry.gt_bytes; | |
6e07e54f | 4176 | } |
aac6b32f ILT |
4177 | |
4178 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4179 | elf_link_input_bfd ignores this section. */ | |
4180 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
6e07e54f | 4181 | } |
aac6b32f ILT |
4182 | |
4183 | /* The table must be sorted by -G value. */ | |
4184 | if (c > 2) | |
4185 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
4186 | ||
4187 | /* Swap out the table. */ | |
4188 | ext_tab = ((Elf32_External_gptab *) | |
4189 | bfd_alloc (abfd, c * sizeof (Elf32_External_gptab))); | |
4190 | if (ext_tab == NULL) | |
6e07e54f | 4191 | { |
aac6b32f ILT |
4192 | free (tab); |
4193 | return false; | |
4194 | } | |
4195 | ||
4196 | for (i = 0; i < c; i++) | |
4197 | bfd_mips_elf32_swap_gptab_out (abfd, tab + i, ext_tab + i); | |
4198 | free (tab); | |
4199 | ||
4200 | o->_raw_size = c * sizeof (Elf32_External_gptab); | |
4201 | o->contents = (bfd_byte *) ext_tab; | |
4202 | ||
4203 | /* Skip this section later on (I don't think this currently | |
4204 | matters, but someday it might). */ | |
4205 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4206 | } | |
4207 | } | |
4208 | ||
aac6b32f ILT |
4209 | /* Invoke the regular ELF backend linker to do all the work. */ |
4210 | if (! bfd_elf32_bfd_final_link (abfd, info)) | |
4211 | return false; | |
4212 | ||
4213 | /* Now write out the computed sections. */ | |
4214 | ||
6e07e54f ILT |
4215 | if (reginfo_sec != (asection *) NULL) |
4216 | { | |
4217 | Elf32_External_RegInfo ext; | |
4218 | ||
4219 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
4220 | if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, | |
4221 | (file_ptr) 0, sizeof ext)) | |
4222 | return false; | |
4223 | } | |
b3c0fc57 | 4224 | |
6e07e54f ILT |
4225 | if (mdebug_sec != (asection *) NULL) |
4226 | { | |
aac6b32f | 4227 | BFD_ASSERT (abfd->output_has_begun); |
9783e04a DM |
4228 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, |
4229 | swap, info, | |
4230 | mdebug_sec->filepos)) | |
6e07e54f | 4231 | return false; |
9783e04a DM |
4232 | |
4233 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
b3c0fc57 ILT |
4234 | } |
4235 | ||
aac6b32f | 4236 | if (gptab_data_sec != (asection *) NULL) |
6e07e54f | 4237 | { |
aac6b32f ILT |
4238 | if (! bfd_set_section_contents (abfd, gptab_data_sec, |
4239 | gptab_data_sec->contents, | |
4240 | (file_ptr) 0, | |
4241 | gptab_data_sec->_raw_size)) | |
4242 | return false; | |
4243 | } | |
4244 | ||
4245 | if (gptab_bss_sec != (asection *) NULL) | |
4246 | { | |
4247 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
4248 | gptab_bss_sec->contents, | |
4249 | (file_ptr) 0, | |
4250 | gptab_bss_sec->_raw_size)) | |
4251 | return false; | |
6e07e54f ILT |
4252 | } |
4253 | ||
5b3b9ff6 ILT |
4254 | if (SGI_COMPAT (abfd)) |
4255 | { | |
4256 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
4257 | if (rtproc_sec != NULL) | |
4258 | { | |
4259 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
4260 | rtproc_sec->contents, | |
4261 | (file_ptr) 0, | |
4262 | rtproc_sec->_raw_size)) | |
4263 | return false; | |
4264 | } | |
4265 | } | |
4266 | ||
6e07e54f | 4267 | return true; |
b3c0fc57 | 4268 | } |
6e07e54f | 4269 | |
aac6b32f | 4270 | /* Handle a MIPS ELF HI16 reloc. */ |
b3c0fc57 ILT |
4271 | |
4272 | static void | |
aac6b32f ILT |
4273 | mips_elf_relocate_hi16 (input_bfd, relhi, rello, contents, addend) |
4274 | bfd *input_bfd; | |
4275 | Elf_Internal_Rela *relhi; | |
4276 | Elf_Internal_Rela *rello; | |
4277 | bfd_byte *contents; | |
4278 | bfd_vma addend; | |
b3c0fc57 | 4279 | { |
aac6b32f ILT |
4280 | bfd_vma insn; |
4281 | bfd_vma addlo; | |
b3c0fc57 | 4282 | |
aac6b32f ILT |
4283 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
4284 | ||
4285 | addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
4286 | addlo &= 0xffff; | |
4287 | ||
4288 | addend += ((insn & 0xffff) << 16) + addlo; | |
4289 | ||
4290 | if ((addlo & 0x8000) != 0) | |
4291 | addend -= 0x10000; | |
4292 | if ((addend & 0x8000) != 0) | |
4293 | addend += 0x10000; | |
4294 | ||
4295 | bfd_put_32 (input_bfd, | |
4296 | (insn & 0xffff0000) | ((addend >> 16) & 0xffff), | |
4297 | contents + relhi->r_offset); | |
4298 | } | |
4299 | ||
5b3b9ff6 ILT |
4300 | /* Handle a MIPS ELF local GOT16 reloc. */ |
4301 | ||
4302 | static void | |
4303 | mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, relhi, rello, | |
4304 | contents, addend) | |
4305 | bfd *output_bfd; | |
4306 | bfd *input_bfd; | |
4307 | asection *sgot; | |
4308 | Elf_Internal_Rela *relhi; | |
4309 | Elf_Internal_Rela *rello; | |
4310 | bfd_byte *contents; | |
4311 | bfd_vma addend; | |
4312 | { | |
4313 | int local_gotno; | |
4314 | int i; | |
4315 | bfd_vma insn; | |
4316 | bfd_vma addlo; | |
4317 | bfd_vma address; | |
4318 | bfd_vma hipage; | |
4319 | bfd_byte *got_contents; | |
4320 | struct mips_got_info *g; | |
4321 | ||
4322 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); | |
4323 | ||
4324 | addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); | |
4325 | addlo &= 0xffff; | |
4326 | ||
4327 | addend += ((insn & 0xffff) << 16) + addlo; | |
4328 | ||
4329 | if ((addlo & 0x8000) != 0) | |
4330 | addend -= 0x10000; | |
4331 | if ((addend & 0x8000) != 0) | |
4332 | addend += 0x10000; | |
4333 | ||
4334 | /* Get a got entry representing requested hipage. */ | |
4335 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
4336 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
4337 | BFD_ASSERT (g != NULL); | |
4338 | ||
4339 | local_gotno = g->local_gotno; | |
4340 | got_contents = sgot->contents; | |
4341 | hipage = addend & 0xffff0000; | |
4342 | ||
4343 | for (i = MIPS_RESERVED_GOTNO; i < local_gotno; i++) | |
4344 | { | |
4345 | address = bfd_get_32 (input_bfd, got_contents + i * 4); | |
4346 | if (hipage == (address & 0xffff0000)) | |
4347 | break; | |
4348 | if (address == (bfd_vma) 0) | |
4349 | { | |
4350 | bfd_put_32 (input_bfd, hipage, got_contents + i * 4); | |
4351 | break; | |
4352 | } | |
4353 | } | |
4354 | ||
4355 | BFD_ASSERT (i < local_gotno); | |
4356 | #if 1 | |
4357 | if (i == local_gotno) | |
4358 | (*_bfd_error_handler) | |
4359 | ("ELF MIPS linker: more got entries are needed for hipage: %x", | |
4360 | hipage); | |
4361 | #endif | |
4362 | ||
4363 | i = - ELF_MIPS_GP_OFFSET (output_bfd) + i * 4; | |
4364 | bfd_put_32 (input_bfd, (insn & 0xffff0000) | (i & 0xffff), | |
4365 | contents + relhi->r_offset); | |
4366 | } | |
4367 | ||
4368 | /* Handle MIPS ELF CALL16 reloc and global GOT16 reloc. */ | |
4369 | ||
4370 | static void | |
4371 | mips_elf_relocate_global_got (input_bfd, rel, contents, offset) | |
4372 | bfd *input_bfd; | |
4373 | Elf_Internal_Rela *rel; | |
4374 | bfd_byte *contents; | |
4375 | bfd_vma offset; | |
4376 | { | |
4377 | bfd_vma insn; | |
4378 | ||
4379 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4380 | bfd_put_32 (input_bfd, | |
4381 | (insn & 0xffff0000) | (offset & 0xffff), | |
4382 | contents + rel->r_offset); | |
4383 | } | |
4384 | ||
aac6b32f ILT |
4385 | /* Relocate a MIPS ELF section. */ |
4386 | ||
4387 | static boolean | |
4388 | mips_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
82b1edf7 | 4389 | contents, relocs, local_syms, local_sections) |
aac6b32f ILT |
4390 | bfd *output_bfd; |
4391 | struct bfd_link_info *info; | |
4392 | bfd *input_bfd; | |
4393 | asection *input_section; | |
4394 | bfd_byte *contents; | |
4395 | Elf_Internal_Rela *relocs; | |
4396 | Elf_Internal_Sym *local_syms; | |
4397 | asection **local_sections; | |
4398 | { | |
4399 | Elf_Internal_Shdr *symtab_hdr; | |
4400 | size_t locsymcount; | |
4401 | size_t extsymoff; | |
5b3b9ff6 ILT |
4402 | asection *sgot, *sreloc, *scpt; |
4403 | bfd *dynobj; | |
abec70b9 | 4404 | bfd_vma gp; |
aac6b32f ILT |
4405 | Elf_Internal_Rela *rel; |
4406 | Elf_Internal_Rela *relend; | |
5b3b9ff6 | 4407 | struct mips_got_info *g; |
aac6b32f | 4408 | |
5b3b9ff6 | 4409 | dynobj = elf_hash_table (info)->dynobj; |
aac6b32f ILT |
4410 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
4411 | ||
5b3b9ff6 ILT |
4412 | sgot = NULL; |
4413 | sreloc = NULL; | |
4414 | if (dynobj == NULL || ! SGI_COMPAT (output_bfd)) | |
4415 | scpt = NULL; | |
4416 | else | |
4417 | scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
4418 | g = NULL; | |
4419 | ||
aac6b32f | 4420 | if (elf_bad_symtab (input_bfd)) |
b3c0fc57 | 4421 | { |
aac6b32f ILT |
4422 | locsymcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); |
4423 | extsymoff = 0; | |
4424 | } | |
4425 | else | |
4426 | { | |
4427 | locsymcount = symtab_hdr->sh_info; | |
4428 | extsymoff = symtab_hdr->sh_info; | |
4429 | } | |
4430 | ||
abec70b9 ILT |
4431 | gp = _bfd_get_gp_value (output_bfd); |
4432 | ||
aac6b32f ILT |
4433 | rel = relocs; |
4434 | relend = relocs + input_section->reloc_count; | |
4435 | for (; rel < relend; rel++) | |
4436 | { | |
4437 | int r_type; | |
82b1edf7 | 4438 | reloc_howto_type *howto; |
6ab826bd | 4439 | unsigned long r_symndx; |
aac6b32f ILT |
4440 | bfd_vma addend; |
4441 | struct elf_link_hash_entry *h; | |
4442 | asection *sec; | |
4443 | Elf_Internal_Sym *sym; | |
e900e695 ILT |
4444 | struct mips_elf_link_hash_entry *mh; |
4445 | int other; | |
aac6b32f ILT |
4446 | bfd_reloc_status_type r; |
4447 | ||
4448 | r_type = ELF32_R_TYPE (rel->r_info); | |
e4f4813f | 4449 | if ((r_type < 0 || r_type >= (int) R_MIPS_max) && r_type != R_MIPS16_26) |
6e07e54f | 4450 | { |
aac6b32f ILT |
4451 | bfd_set_error (bfd_error_bad_value); |
4452 | return false; | |
6e07e54f | 4453 | } |
e4f4813f ILT |
4454 | if (r_type != R_MIPS16_26) |
4455 | howto = elf_mips_howto_table + r_type; | |
4456 | else | |
4457 | howto = &elf_mips16_jump_howto; | |
b3c0fc57 | 4458 | |
5b3b9ff6 ILT |
4459 | if (dynobj != NULL |
4460 | && (r_type == R_MIPS_CALL16 | |
4461 | || r_type == R_MIPS_GOT16 | |
4462 | || r_type == R_MIPS_CALL_HI16 | |
4463 | || r_type == R_MIPS_CALL_LO16 | |
4464 | || r_type == R_MIPS_GOT_HI16 | |
4465 | || r_type == R_MIPS_GOT_LO16)) | |
4466 | { | |
4467 | /* We need the .got section. */ | |
4468 | if (sgot == NULL) | |
4469 | { | |
4470 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
4471 | BFD_ASSERT (sgot != NULL); | |
4472 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
4473 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
4474 | BFD_ASSERT (g != NULL); | |
4475 | } | |
4476 | } | |
4477 | ||
aac6b32f ILT |
4478 | r_symndx = ELF32_R_SYM (rel->r_info); |
4479 | ||
4480 | /* Mix in the change in GP address for a GP relative reloc. */ | |
4481 | if (r_type != R_MIPS_GPREL16 | |
4482 | && r_type != R_MIPS_LITERAL | |
4483 | && r_type != R_MIPS_GPREL32) | |
4484 | addend = 0; | |
4485 | else | |
b3c0fc57 | 4486 | { |
cba3f8a9 | 4487 | if (gp == 0) |
aac6b32f ILT |
4488 | { |
4489 | if (! ((*info->callbacks->reloc_dangerous) | |
4490 | (info, | |
4491 | "GP relative relocation when GP not defined", | |
4492 | input_bfd, input_section, | |
4493 | rel->r_offset))) | |
4494 | return false; | |
4495 | /* Only give the error once per link. */ | |
cba3f8a9 ILT |
4496 | gp = 4; |
4497 | _bfd_set_gp_value (output_bfd, gp); | |
aac6b32f ILT |
4498 | } |
4499 | ||
4500 | if (r_symndx < extsymoff | |
4501 | || (elf_bad_symtab (input_bfd) | |
4502 | && local_sections[r_symndx] != NULL)) | |
4503 | { | |
4504 | /* This is a relocation against a section. The current | |
4505 | addend in the instruction is the difference between | |
4506 | INPUT_SECTION->vma and the GP value of INPUT_BFD. We | |
4507 | must change this to be the difference between the | |
4508 | final definition (which will end up in RELOCATION) | |
4509 | and the GP value of OUTPUT_BFD (which is in GP). */ | |
cba3f8a9 | 4510 | addend = elf_gp (input_bfd) - gp; |
aac6b32f ILT |
4511 | } |
4512 | else if (! info->relocateable) | |
4513 | { | |
4514 | /* We are doing a final link. The current addend in the | |
4515 | instruction is simply the desired offset into the | |
4516 | symbol (normally zero). We want the instruction to | |
4517 | hold the difference between the final definition of | |
4518 | the symbol (which will end up in RELOCATION) and the | |
4519 | GP value of OUTPUT_BFD (which is in GP). */ | |
cba3f8a9 | 4520 | addend = - gp; |
aac6b32f ILT |
4521 | } |
4522 | else | |
4523 | { | |
4524 | /* We are generating relocateable output, and we aren't | |
4525 | going to define this symbol, so we just leave the | |
4526 | instruction alone. */ | |
4527 | addend = 0; | |
4528 | } | |
b3c0fc57 | 4529 | } |
b3c0fc57 | 4530 | |
aac6b32f ILT |
4531 | h = NULL; |
4532 | sym = NULL; | |
4533 | sec = NULL; | |
4534 | if (info->relocateable) | |
4535 | { | |
4536 | /* This is a relocateable link. We don't have to change | |
4537 | anything, unless the reloc is against a section symbol, | |
4538 | in which case we have to adjust according to where the | |
4539 | section symbol winds up in the output section. */ | |
4540 | if (r_symndx >= locsymcount | |
4541 | || (elf_bad_symtab (input_bfd) | |
4542 | && local_sections[r_symndx] == NULL)) | |
4543 | r = bfd_reloc_ok; | |
4544 | else | |
4545 | { | |
4546 | sym = local_syms + r_symndx; | |
4547 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4548 | r = bfd_reloc_ok; | |
4549 | else | |
4550 | { | |
4551 | sec = local_sections[r_symndx]; | |
4552 | ||
4553 | /* It would be logical to add sym->st_value here, | |
4554 | but Irix 5 sometimes generates a garbage symbol | |
4555 | value. */ | |
4556 | addend += sec->output_offset; | |
4557 | ||
5b3b9ff6 ILT |
4558 | /* If this is HI16 or GOT16 with an associated LO16, |
4559 | adjust the addend accordingly. Otherwise, just | |
aac6b32f | 4560 | relocate. */ |
e4f4813f ILT |
4561 | if (r_type == R_MIPS_64 && bfd_big_endian (input_bfd)) |
4562 | r = _bfd_relocate_contents (howto, input_bfd, | |
4563 | addend, | |
4564 | contents + rel->r_offset + 4); | |
4565 | else if (r_type != R_MIPS_HI16 && r_type != R_MIPS_GOT16) | |
aac6b32f ILT |
4566 | r = _bfd_relocate_contents (howto, input_bfd, |
4567 | addend, | |
4568 | contents + rel->r_offset); | |
4569 | else | |
4570 | { | |
abec70b9 ILT |
4571 | Elf_Internal_Rela *lorel; |
4572 | ||
4573 | /* As a GNU extension, permit an arbitrary | |
4574 | number of R_MIPS_HI16 relocs before the | |
4575 | R_MIPS_LO16 reloc. This permits gcc to emit | |
4576 | the HI and LO relocs itself. */ | |
4577 | if (r_type == R_MIPS_GOT16) | |
4578 | lorel = rel + 1; | |
4579 | else | |
4580 | { | |
4581 | for (lorel = rel + 1; | |
4582 | (lorel < relend | |
4583 | && (ELF32_R_TYPE (lorel->r_info) | |
4584 | == R_MIPS_HI16)); | |
4585 | lorel++) | |
4586 | ; | |
4587 | } | |
4588 | if (lorel < relend | |
4589 | && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16) | |
4590 | { | |
4591 | mips_elf_relocate_hi16 (input_bfd, rel, lorel, | |
4592 | contents, addend); | |
4593 | r = bfd_reloc_ok; | |
4594 | } | |
4595 | else | |
4596 | r = _bfd_relocate_contents (howto, input_bfd, | |
4597 | addend, | |
4598 | contents + rel->r_offset); | |
aac6b32f ILT |
4599 | } |
4600 | } | |
4601 | } | |
4602 | } | |
4603 | else | |
4604 | { | |
4605 | bfd_vma relocation; | |
5b3b9ff6 | 4606 | boolean local; |
aac6b32f ILT |
4607 | |
4608 | /* This is a final link. */ | |
4609 | sym = NULL; | |
4610 | if (r_symndx < extsymoff | |
4611 | || (elf_bad_symtab (input_bfd) | |
4612 | && local_sections[r_symndx] != NULL)) | |
4613 | { | |
5b3b9ff6 | 4614 | local = true; |
aac6b32f ILT |
4615 | sym = local_syms + r_symndx; |
4616 | sec = local_sections[r_symndx]; | |
4617 | relocation = (sec->output_section->vma | |
4618 | + sec->output_offset); | |
4619 | ||
4620 | /* It would be logical to always add sym->st_value here, | |
4621 | but Irix 5 sometimes generates a garbage symbol | |
4622 | value. */ | |
4623 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4624 | relocation += sym->st_value; | |
e4f4813f ILT |
4625 | |
4626 | /* mips16 text labels should be treated as odd. */ | |
4627 | if (sym->st_other == STO_MIPS16) | |
4628 | ++relocation; | |
aac6b32f ILT |
4629 | } |
4630 | else | |
4631 | { | |
4632 | long indx; | |
4633 | ||
5b3b9ff6 | 4634 | local = false; |
aac6b32f ILT |
4635 | indx = r_symndx - extsymoff; |
4636 | h = elf_sym_hashes (input_bfd)[indx]; | |
e9f03cd4 ILT |
4637 | while (h->root.type == bfd_link_hash_indirect |
4638 | || h->root.type == bfd_link_hash_warning) | |
4639 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5b3b9ff6 ILT |
4640 | if (strcmp (h->root.root.string, "_gp_disp") == 0) |
4641 | { | |
cba3f8a9 | 4642 | if (gp == 0) |
5b3b9ff6 ILT |
4643 | { |
4644 | if (! ((*info->callbacks->reloc_dangerous) | |
4645 | (info, | |
4646 | "_gp_disp used when GP not defined", | |
4647 | input_bfd, input_section, | |
4648 | rel->r_offset))) | |
4649 | return false; | |
4650 | /* Only give the error once per link. */ | |
cba3f8a9 ILT |
4651 | gp = 4; |
4652 | _bfd_set_gp_value (output_bfd, gp); | |
5b3b9ff6 ILT |
4653 | relocation = 0; |
4654 | } | |
4655 | else | |
4656 | { | |
4657 | sec = input_section; | |
4658 | if (sec->output_section != NULL) | |
cba3f8a9 | 4659 | relocation = (gp |
5b3b9ff6 ILT |
4660 | - (rel->r_offset |
4661 | + sec->output_section->vma | |
4662 | + sec->output_offset)); | |
4663 | else | |
cba3f8a9 | 4664 | relocation = gp - rel->r_offset; |
5b3b9ff6 ILT |
4665 | if (r_type == R_MIPS_LO16) |
4666 | relocation += 4; | |
4667 | } | |
4668 | } | |
4669 | else if (h->root.type == bfd_link_hash_defined | |
a16fcab3 | 4670 | || h->root.type == bfd_link_hash_defweak) |
aac6b32f ILT |
4671 | { |
4672 | sec = h->root.u.def.section; | |
5b3b9ff6 ILT |
4673 | if (sec->output_section == NULL) |
4674 | relocation = 0; | |
4675 | else | |
4676 | relocation = (h->root.u.def.value | |
4677 | + sec->output_section->vma | |
4678 | + sec->output_offset); | |
aac6b32f | 4679 | } |
a16fcab3 | 4680 | else if (h->root.type == bfd_link_hash_undefweak) |
aac6b32f | 4681 | relocation = 0; |
5b3b9ff6 ILT |
4682 | else if (info->shared && ! info->symbolic) |
4683 | relocation = 0; | |
53787b23 ILT |
4684 | else if (strcmp (h->root.root.string, "_DYNAMIC_LINK") == 0) |
4685 | { | |
4686 | /* If this is a dynamic link, we should have created | |
4687 | a _DYNAMIC_LINK symbol in | |
4688 | mips_elf_create_dynamic_sections. Otherwise, we | |
4689 | should define the symbol with a value of 0. | |
4690 | FIXME: It should probably get into the symbol | |
4691 | table somehow as well. */ | |
4692 | BFD_ASSERT (! info->shared); | |
4693 | BFD_ASSERT (bfd_get_section_by_name (output_bfd, | |
4694 | ".dynamic") == NULL); | |
4695 | relocation = 0; | |
4696 | } | |
aac6b32f ILT |
4697 | else |
4698 | { | |
4699 | if (! ((*info->callbacks->undefined_symbol) | |
4700 | (info, h->root.root.string, input_bfd, | |
4701 | input_section, rel->r_offset))) | |
4702 | return false; | |
4703 | relocation = 0; | |
4704 | } | |
4705 | } | |
4706 | ||
e900e695 ILT |
4707 | mh = (struct mips_elf_link_hash_entry *) h; |
4708 | if (h != NULL) | |
4709 | other = h->other; | |
4710 | else if (sym != NULL) | |
4711 | other = sym->st_other; | |
4712 | else | |
4713 | other = 0; | |
4714 | ||
4715 | /* If this function has an fn_stub, then it is a mips16 | |
4716 | function which needs a stub if it is called by a 32 bit | |
4717 | function. If this reloc is anything other than a 16 bit | |
4718 | call, redirect the reloc to the stub. We don't redirect | |
4719 | relocs from other stub functions. */ | |
4720 | if (r_type != R_MIPS16_26 | |
4721 | && ((mh != NULL | |
4722 | && mh->fn_stub != NULL) | |
4723 | || (mh == NULL | |
4724 | && elf_tdata (input_bfd)->local_stubs != NULL | |
4725 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) | |
4726 | && strncmp (bfd_get_section_name (input_bfd, input_section), | |
4727 | FN_STUB, sizeof FN_STUB - 1) != 0 | |
4728 | && strncmp (bfd_get_section_name (input_bfd, input_section), | |
4729 | CALL_STUB, sizeof CALL_STUB - 1) != 0 | |
4730 | && strncmp (bfd_get_section_name (input_bfd, input_section), | |
4731 | CALL_FP_STUB, sizeof CALL_FP_STUB - 1) != 0) | |
4732 | { | |
4733 | if (mh != NULL) | |
4734 | { | |
4735 | BFD_ASSERT (mh->need_fn_stub); | |
4736 | relocation = (mh->fn_stub->output_section->vma | |
4737 | + mh->fn_stub->output_offset); | |
4738 | } | |
4739 | else | |
4740 | { | |
4741 | asection *fn_stub; | |
4742 | ||
4743 | fn_stub = elf_tdata (input_bfd)->local_stubs[r_symndx]; | |
4744 | relocation = (fn_stub->output_section->vma | |
4745 | + fn_stub->output_offset); | |
4746 | } | |
4747 | ||
4748 | /* RELOCATION now points to 32 bit code. */ | |
4749 | other = 0; | |
4750 | } | |
4751 | ||
4752 | /* If this function has a call_stub, then it is called by a | |
4753 | mips16 function; the call needs to go through a stub if | |
4754 | this function is a 32 bit function. If this reloc is a | |
4755 | 16 bit call, and the symbol is not a 16 bit function, | |
4756 | then redirect the reloc to the stub. Note that we don't | |
4757 | need to worry about calling the function through a | |
4758 | function pointer; such calls are handled by routing | |
4759 | through a special mips16 routine. We don't have to check | |
4760 | whether this call is from a stub; it can't be, because a | |
4761 | stub contains 32 bit code, and hence can not have a 16 | |
4762 | bit reloc. */ | |
4763 | if (r_type == R_MIPS16_26 | |
4764 | && mh != NULL | |
4765 | && (mh->call_stub != NULL || mh->call_fp_stub != NULL) | |
4766 | && other != STO_MIPS16) | |
4767 | { | |
4768 | asection *stub; | |
4769 | ||
4770 | /* If both call_stub and call_fp_stub are defined, we | |
4771 | can figure out which one to use by seeing which one | |
4772 | appears in the input file. */ | |
4773 | if (mh->call_stub != NULL && mh->call_fp_stub != NULL) | |
4774 | { | |
4775 | asection *o; | |
4776 | ||
4777 | stub = NULL; | |
4778 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
4779 | { | |
4780 | if (strncmp (bfd_get_section_name (input_bfd, o), | |
4781 | CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
4782 | { | |
4783 | stub = mh->call_fp_stub; | |
4784 | break; | |
4785 | } | |
4786 | } | |
4787 | if (stub == NULL) | |
4788 | stub = mh->call_stub; | |
4789 | } | |
4790 | else if (mh->call_stub != NULL) | |
4791 | stub = mh->call_stub; | |
4792 | else | |
4793 | stub = mh->call_fp_stub; | |
4794 | ||
4795 | BFD_ASSERT (stub->_raw_size > 0); | |
4796 | relocation = stub->output_section->vma + stub->output_offset; | |
4797 | } | |
4798 | ||
abec70b9 | 4799 | if (r_type == R_MIPS_HI16) |
aac6b32f | 4800 | { |
abec70b9 ILT |
4801 | Elf_Internal_Rela *lorel; |
4802 | ||
4803 | /* As a GNU extension, permit an arbitrary number of | |
4804 | R_MIPS_HI16 relocs before the R_MIPS_LO16 reloc. | |
4805 | This permits gcc to emit the HI and LO relocs itself. */ | |
4806 | for (lorel = rel + 1; | |
4807 | (lorel < relend | |
4808 | && ELF32_R_TYPE (lorel->r_info) == R_MIPS_HI16); | |
4809 | lorel++) | |
4810 | ; | |
4811 | if (lorel < relend | |
4812 | && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16) | |
4813 | { | |
4814 | mips_elf_relocate_hi16 (input_bfd, rel, lorel, | |
4815 | contents, relocation + addend); | |
4816 | r = bfd_reloc_ok; | |
4817 | } | |
4818 | else | |
4819 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4820 | contents, rel->r_offset, | |
4821 | relocation, addend); | |
aac6b32f | 4822 | } |
5b3b9ff6 ILT |
4823 | else if (r_type == R_MIPS_GOT16 && local) |
4824 | { | |
abec70b9 | 4825 | /* GOT16 must also have an associated LO16 in the local |
5b3b9ff6 ILT |
4826 | case. In this case, the addend is extracted and the |
4827 | section in which the referenced object is determined. | |
4828 | Then the final address of the object is computed and | |
4829 | the GOT entry for the hipage (an aligned 64kb chunk) | |
4830 | is added to .got section if needed. The offset field | |
4831 | of the GOT16-relocated instruction is replaced by the | |
4832 | index of this GOT entry for the hipage. */ | |
4833 | if ((rel + 1) < relend | |
4834 | && ELF32_R_TYPE ((rel + 1)->r_info) == R_MIPS_LO16) | |
4835 | { | |
4836 | mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, | |
4837 | rel, rel + 1, | |
4838 | contents, | |
4839 | relocation + addend); | |
4840 | r = bfd_reloc_ok; | |
4841 | } | |
4842 | else | |
4843 | r = bfd_reloc_outofrange; | |
4844 | } | |
4845 | else if (r_type == R_MIPS_CALL16 | |
4846 | || r_type == R_MIPS_GOT16 | |
4847 | || r_type == R_MIPS_CALL_LO16 | |
4848 | || r_type == R_MIPS_GOT_LO16) | |
4849 | { | |
4850 | bfd_vma offset; | |
4851 | ||
4852 | /* This symbol must be registered as a global symbol | |
4853 | having the corresponding got entry. */ | |
4854 | BFD_ASSERT (h->got_offset != (bfd_vma) -1); | |
4855 | ||
4856 | offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; | |
4857 | BFD_ASSERT (g->local_gotno <= offset | |
4858 | && offset < sgot->_raw_size); | |
4859 | bfd_put_32 (output_bfd, relocation + addend, | |
4860 | sgot->contents + offset); | |
4861 | offset = (sgot->output_section->vma + sgot->output_offset | |
cba3f8a9 | 4862 | + offset - gp); |
5b3b9ff6 ILT |
4863 | mips_elf_relocate_global_got (input_bfd, rel, contents, |
4864 | offset); | |
4865 | r = bfd_reloc_ok; | |
4866 | } | |
4867 | else if (r_type == R_MIPS_CALL_HI16 | |
4868 | || r_type == R_MIPS_GOT_HI16) | |
4869 | { | |
4870 | bfd_vma offset; | |
4871 | ||
4872 | /* This must be a global symbol with a got entry. The | |
4873 | next reloc must be the corresponding LO16 reloc. */ | |
4874 | BFD_ASSERT (h != NULL && h->got_offset != (bfd_vma) -1); | |
4875 | BFD_ASSERT ((rel + 1) < relend); | |
4876 | BFD_ASSERT (ELF32_R_TYPE ((rel + 1)->r_info) | |
4877 | == (r_type == R_MIPS_CALL_HI16 | |
4878 | ? R_MIPS_CALL_LO16 | |
4879 | : R_MIPS_GOT_LO16)); | |
4880 | ||
4881 | offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; | |
4882 | BFD_ASSERT (g->local_gotno <= offset | |
4883 | && offset < sgot->_raw_size); | |
4884 | bfd_put_32 (output_bfd, relocation + addend, | |
4885 | sgot->contents + offset); | |
4886 | offset = (sgot->output_section->vma + sgot->output_offset | |
cba3f8a9 | 4887 | + offset - gp); |
5b3b9ff6 ILT |
4888 | mips_elf_relocate_hi16 (input_bfd, rel, rel + 1, contents, |
4889 | offset); | |
4890 | r = bfd_reloc_ok; | |
4891 | } | |
4892 | else if (r_type == R_MIPS_REL32 | |
4893 | || r_type == R_MIPS_32) | |
4894 | { | |
4895 | Elf_Internal_Rel outrel; | |
4896 | Elf32_crinfo cptrel; | |
4897 | bfd_byte *cr; | |
4898 | ||
abec70b9 | 4899 | if ((info->shared |
9b292d4c ILT |
4900 | || (elf_hash_table (info)->dynamic_sections_created |
4901 | && h != NULL | |
abec70b9 ILT |
4902 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) |
4903 | == 0))) | |
5b3b9ff6 ILT |
4904 | && (input_section->flags & SEC_ALLOC) != 0) |
4905 | { | |
4906 | /* When generating a shared object, these | |
4907 | relocations are copied into the output file to be | |
4908 | resolved at run time. */ | |
4909 | if (sreloc == NULL) | |
4910 | { | |
4911 | sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
4912 | BFD_ASSERT (sreloc != NULL); | |
4913 | } | |
4914 | ||
4915 | outrel.r_offset = (rel->r_offset | |
4916 | + input_section->output_section->vma | |
4917 | + input_section->output_offset); | |
4918 | ||
4919 | addend = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4920 | ||
53787b23 ILT |
4921 | if (h != NULL |
4922 | && (! info->symbolic | |
4923 | || (h->elf_link_hash_flags | |
4924 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
5b3b9ff6 ILT |
4925 | { |
4926 | BFD_ASSERT (h->dynindx != -1); | |
4927 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_REL32); | |
4928 | sec = input_section; | |
4929 | } | |
4930 | else | |
4931 | { | |
4932 | long indx; | |
4933 | ||
53787b23 ILT |
4934 | if (h == NULL) |
4935 | sec = local_sections[r_symndx]; | |
4936 | else | |
4937 | { | |
4938 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
4939 | || (h->root.type | |
4940 | == bfd_link_hash_defweak)); | |
4941 | sec = h->root.u.def.section; | |
4942 | } | |
5b3b9ff6 ILT |
4943 | if (sec != NULL && bfd_is_abs_section (sec)) |
4944 | indx = 0; | |
4945 | else if (sec == NULL || sec->owner == NULL) | |
4946 | { | |
4947 | bfd_set_error (bfd_error_bad_value); | |
4948 | return false; | |
4949 | } | |
4950 | else | |
4951 | { | |
4952 | asection *osec; | |
4953 | ||
4954 | osec = sec->output_section; | |
4955 | indx = elf_section_data (osec)->dynindx; | |
4956 | if (indx == 0) | |
4957 | abort (); | |
4958 | } | |
4959 | ||
4960 | outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32); | |
4961 | addend += relocation; | |
4962 | } | |
4963 | ||
4964 | bfd_put_32 (output_bfd, addend, contents + rel->r_offset); | |
4965 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, | |
4966 | (((Elf32_External_Rel *) | |
4967 | sreloc->contents) | |
4968 | + sreloc->reloc_count)); | |
4969 | ++sreloc->reloc_count; | |
4970 | ||
4971 | if (SGI_COMPAT (output_bfd)) | |
4972 | { | |
4973 | if (scpt == NULL) | |
4974 | continue; | |
4975 | ||
4976 | /* Make an entry of compact relocation info. */ | |
4977 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
4978 | cptrel.vaddr = (rel->r_offset | |
4979 | + input_section->output_section->vma | |
4980 | + input_section->output_offset); | |
4981 | if (r_type == R_MIPS_REL32) | |
4982 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
4983 | else | |
4984 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
53787b23 | 4985 | mips_elf_set_cr_dist2to (cptrel, 0); |
5b3b9ff6 ILT |
4986 | cptrel.konst = addend; |
4987 | ||
4988 | cr = (scpt->contents | |
4989 | + sizeof (Elf32_External_compact_rel)); | |
4990 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, | |
4991 | ((Elf32_External_crinfo *) cr | |
4992 | + scpt->reloc_count)); | |
4993 | ++scpt->reloc_count; | |
4994 | } | |
4995 | ||
4996 | /* This reloc will be computed at runtime, so | |
4997 | there's no need to do anything now. */ | |
4998 | continue; | |
4999 | } | |
5000 | else | |
5001 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5002 | contents, rel->r_offset, | |
5003 | relocation, addend); | |
5004 | } | |
e4f4813f ILT |
5005 | else if (r_type == R_MIPS_64) |
5006 | { | |
5007 | bfd_size_type addr; | |
5008 | unsigned long val; | |
5009 | ||
5010 | /* Do a 32 bit relocation, and sign extend to 64 bits. */ | |
5011 | addr = rel->r_offset; | |
5012 | if (bfd_big_endian (input_bfd)) | |
5013 | addr += 4; | |
5014 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5015 | contents, addr, relocation, | |
5016 | addend); | |
5017 | val = bfd_get_32 (input_bfd, contents + addr); | |
5018 | if ((val & 0x80000000) != 0) | |
5019 | val = 0xffffffff; | |
5020 | else | |
5021 | val = 0; | |
5022 | addr = rel->r_offset; | |
5023 | if (bfd_little_endian (input_bfd)) | |
5024 | addr += 4; | |
5025 | bfd_put_32 (input_bfd, val, contents + addr); | |
5026 | } | |
e900e695 | 5027 | else if (r_type == R_MIPS_26 && other == STO_MIPS16) |
e4f4813f ILT |
5028 | { |
5029 | unsigned long insn; | |
5030 | ||
5031 | /* This is a jump to a mips16 routine from a mips32 | |
5032 | routine. We need to change jal into jalx. */ | |
5033 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
5034 | if (((insn >> 26) & 0x3f) != 0x3 | |
5035 | && ((insn >> 26) & 0x3f) != 0x1d) | |
5036 | { | |
5037 | (*_bfd_error_handler) | |
5038 | ("%s: %s+0x%lx: jump to mips16 routine which is not jal", | |
5039 | bfd_get_filename (input_bfd), | |
5040 | input_section->name, | |
5041 | (unsigned long) rel->r_offset); | |
5042 | bfd_set_error (bfd_error_bad_value); | |
5043 | return false; | |
5044 | } | |
5045 | insn = (insn & 0x3ffffff) | (0x1d << 26); | |
5046 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
5047 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5048 | contents, rel->r_offset, | |
5049 | relocation, addend); | |
5050 | } | |
5051 | else if (r_type == R_MIPS16_26) | |
5052 | { | |
5053 | /* It's easiest to do the normal relocation, and then | |
5054 | dig out the instruction and swap the first word the | |
5055 | way the mips16 expects it. */ | |
5056 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5057 | contents, rel->r_offset, | |
5058 | relocation, addend); | |
5059 | if (r == bfd_reloc_ok) | |
5060 | { | |
5061 | unsigned long insn; | |
5062 | ||
5063 | insn = bfd_get_16 (input_bfd, contents + rel->r_offset); | |
5064 | insn = ((insn & 0xfc00) | |
5065 | | ((insn & 0x1f) << 5) | |
5066 | | ((insn & 0x3e0) >> 5)); | |
5067 | /* If this is a jump to a 32 bit routine, then make | |
5068 | it jalx. */ | |
e900e695 | 5069 | if (other != STO_MIPS16) |
e4f4813f ILT |
5070 | insn |= 0x400; |
5071 | bfd_put_16 (input_bfd, insn, contents + rel->r_offset); | |
5072 | } | |
5073 | } | |
5b3b9ff6 ILT |
5074 | else |
5075 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5076 | contents, rel->r_offset, | |
5077 | relocation, addend); | |
5078 | ||
5079 | if (SGI_COMPAT (abfd) | |
5080 | && scpt != NULL | |
5081 | && (input_section->flags & SEC_ALLOC) != 0) | |
5082 | { | |
5083 | Elf32_crinfo cptrel; | |
5084 | bfd_byte *cr; | |
5085 | ||
5086 | /* Make an entry of compact relocation info. */ | |
5087 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
5088 | cptrel.vaddr = (rel->r_offset | |
5089 | + input_section->output_section->vma | |
5090 | + input_section->output_offset); | |
5091 | ||
5092 | switch (r_type) | |
5093 | { | |
5094 | case R_MIPS_26: | |
5095 | mips_elf_set_cr_type (cptrel, CRT_MIPS_JMPAD); | |
53787b23 ILT |
5096 | /* XXX How should we set dist2to in this case. */ |
5097 | mips_elf_set_cr_dist2to (cptrel, 8); | |
5098 | cptrel.konst = addend + relocation; | |
5b3b9ff6 ILT |
5099 | cr = scpt->contents + sizeof (Elf32_External_compact_rel); |
5100 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, | |
5101 | ((Elf32_External_crinfo *) cr | |
5102 | + scpt->reloc_count)); | |
5103 | ++scpt->reloc_count; | |
5104 | break; | |
5105 | ||
5106 | case R_MIPS_GPREL16: | |
5107 | case R_MIPS_LITERAL: | |
5108 | case R_MIPS_GPREL32: | |
5109 | mips_elf_set_cr_type (cptrel, CRT_MIPS_GPHI_LO); | |
cba3f8a9 | 5110 | cptrel.konst = gp - cptrel.vaddr; |
53787b23 | 5111 | mips_elf_set_cr_dist2to (cptrel, 4); |
5b3b9ff6 ILT |
5112 | cr = scpt->contents + sizeof (Elf32_External_compact_rel); |
5113 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, | |
5114 | ((Elf32_External_crinfo *) cr | |
5115 | + scpt->reloc_count)); | |
5116 | ++scpt->reloc_count; | |
5117 | break; | |
5118 | ||
5119 | default: | |
5120 | break; | |
5121 | } | |
5122 | } | |
aac6b32f ILT |
5123 | } |
5124 | ||
5125 | if (r != bfd_reloc_ok) | |
5126 | { | |
5127 | switch (r) | |
5128 | { | |
5129 | default: | |
5130 | case bfd_reloc_outofrange: | |
5131 | abort (); | |
5132 | case bfd_reloc_overflow: | |
5133 | { | |
5134 | const char *name; | |
5135 | ||
5136 | if (h != NULL) | |
5137 | name = h->root.root.string; | |
5138 | else | |
5139 | { | |
ede4eed4 KR |
5140 | name = bfd_elf_string_from_elf_section (input_bfd, |
5141 | symtab_hdr->sh_link, | |
5142 | sym->st_name); | |
aac6b32f ILT |
5143 | if (name == NULL) |
5144 | return false; | |
5145 | if (*name == '\0') | |
5146 | name = bfd_section_name (input_bfd, sec); | |
5147 | } | |
5148 | if (! ((*info->callbacks->reloc_overflow) | |
5149 | (info, name, howto->name, (bfd_vma) 0, | |
5150 | input_bfd, input_section, rel->r_offset))) | |
5151 | return false; | |
5152 | } | |
5153 | break; | |
5154 | } | |
5155 | } | |
b3c0fc57 | 5156 | } |
aac6b32f ILT |
5157 | |
5158 | return true; | |
b3c0fc57 | 5159 | } |
e4f4813f ILT |
5160 | |
5161 | /* This hook function is called before the linker writes out a global | |
5162 | symbol. This is where we undo the increment of the value for a | |
5163 | mips16 symbol. */ | |
5164 | ||
5165 | /*ARGSIGNORED*/ | |
5166 | static boolean | |
5167 | mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) | |
5168 | bfd *abfd; | |
5169 | struct bfd_link_info *info; | |
5170 | const char *name; | |
5171 | Elf_Internal_Sym *sym; | |
5172 | asection *input_sec; | |
5173 | { | |
5174 | if (sym->st_other == STO_MIPS16 | |
5175 | && (sym->st_value & 1) != 0) | |
5176 | --sym->st_value; | |
5177 | return true; | |
5178 | } | |
b3c0fc57 | 5179 | \f |
5b3b9ff6 ILT |
5180 | /* Functions for the dynamic linker. */ |
5181 | ||
5182 | /* The name of the dynamic interpreter. This is put in the .interp | |
5183 | section. */ | |
5184 | ||
5185 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
5186 | ||
5187 | /* Create dynamic sections when linking against a dynamic object. */ | |
5b3b9ff6 ILT |
5188 | |
5189 | static boolean | |
5190 | mips_elf_create_dynamic_sections (abfd, info) | |
a16fcab3 | 5191 | bfd *abfd; |
5b3b9ff6 | 5192 | struct bfd_link_info *info; |
a16fcab3 | 5193 | { |
5b3b9ff6 ILT |
5194 | struct elf_link_hash_entry *h; |
5195 | flagword flags; | |
5196 | register asection *s; | |
5197 | const char * const *namep; | |
a16fcab3 | 5198 | |
5b3b9ff6 | 5199 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
ff12f303 | 5200 | | SEC_LINKER_CREATED | SEC_READONLY); |
a16fcab3 | 5201 | |
5b3b9ff6 ILT |
5202 | /* Mips ABI requests the .dynamic section to be read only. */ |
5203 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
5204 | if (s != NULL) | |
5205 | { | |
5206 | if (! bfd_set_section_flags (abfd, s, flags)) | |
5207 | return false; | |
5208 | } | |
a16fcab3 | 5209 | |
5b3b9ff6 ILT |
5210 | /* We need to create .got section. */ |
5211 | if (! mips_elf_create_got_section (abfd, info)) | |
5212 | return false; | |
5213 | ||
5214 | /* Create .stub section. */ | |
5215 | if (bfd_get_section_by_name (abfd, ".stub") == NULL) | |
a16fcab3 | 5216 | { |
5b3b9ff6 ILT |
5217 | s = bfd_make_section (abfd, ".stub"); |
5218 | if (s == NULL | |
5219 | || ! bfd_set_section_flags (abfd, s, flags) | |
5220 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
5221 | return false; | |
5222 | } | |
5223 | ||
eb52b9dc ILT |
5224 | if (SGI_COMPAT (abfd) |
5225 | && !info->shared | |
5226 | && bfd_get_section_by_name (abfd, ".rld_map") == NULL) | |
5227 | { | |
5228 | s = bfd_make_section (abfd, ".rld_map"); | |
5229 | if (s == NULL | |
5230 | || ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY) | |
5231 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
5232 | return false; | |
5233 | } | |
5234 | ||
5b3b9ff6 ILT |
5235 | if (SGI_COMPAT (abfd)) |
5236 | { | |
5237 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
5238 | { | |
5239 | h = NULL; | |
5240 | if (! (_bfd_generic_link_add_one_symbol | |
5241 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, | |
5242 | (bfd_vma) 0, (const char *) NULL, false, | |
5243 | get_elf_backend_data (abfd)->collect, | |
5244 | (struct bfd_link_hash_entry **) &h))) | |
5245 | return false; | |
e9f03cd4 | 5246 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; |
5b3b9ff6 ILT |
5247 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
5248 | h->type = STT_SECTION; | |
5249 | ||
53787b23 | 5250 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
5b3b9ff6 ILT |
5251 | return false; |
5252 | } | |
5253 | ||
53787b23 ILT |
5254 | /* We need to create a .compact_rel section. */ |
5255 | if (! mips_elf_create_compact_rel_section (abfd, info)) | |
5256 | return false; | |
5b3b9ff6 ILT |
5257 | |
5258 | /* Change aligments of some sections. */ | |
5259 | s = bfd_get_section_by_name (abfd, ".hash"); | |
5260 | if (s != NULL) | |
5261 | bfd_set_section_alignment (abfd, s, 4); | |
5262 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
5263 | if (s != NULL) | |
5264 | bfd_set_section_alignment (abfd, s, 4); | |
5265 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
5266 | if (s != NULL) | |
5267 | bfd_set_section_alignment (abfd, s, 4); | |
5268 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
5269 | if (s != NULL) | |
5270 | bfd_set_section_alignment (abfd, s, 4); | |
5271 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
5272 | if (s != NULL) | |
5273 | bfd_set_section_alignment (abfd, s, 4); | |
a16fcab3 KR |
5274 | } |
5275 | ||
53787b23 ILT |
5276 | if (!info->shared) |
5277 | { | |
5278 | h = NULL; | |
5279 | if (! (_bfd_generic_link_add_one_symbol | |
5280 | (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr, | |
5281 | (bfd_vma) 0, (const char *) NULL, false, | |
5282 | get_elf_backend_data (abfd)->collect, | |
5283 | (struct bfd_link_hash_entry **) &h))) | |
5284 | return false; | |
e9f03cd4 | 5285 | h->elf_link_hash_flags ^=~ ELF_LINK_NON_ELF; |
53787b23 ILT |
5286 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
5287 | h->type = STT_SECTION; | |
5288 | ||
5289 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5290 | return false; | |
eb52b9dc ILT |
5291 | |
5292 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
5293 | { | |
5294 | /* __rld_map is a four byte word located in the .data section | |
5295 | and is filled in by the rtld to contain a pointer to | |
5296 | the _r_debug structure. Its symbol value will be set in | |
5297 | mips_elf_finish_dynamic_symbol. */ | |
5298 | s = bfd_get_section_by_name (abfd, ".rld_map"); | |
5299 | BFD_ASSERT (s != NULL); | |
5300 | ||
5301 | h = NULL; | |
5302 | if (! (_bfd_generic_link_add_one_symbol | |
5303 | (info, abfd, "__rld_map", BSF_GLOBAL, s, | |
5304 | (bfd_vma) 0, (const char *) NULL, false, | |
5305 | get_elf_backend_data (abfd)->collect, | |
5306 | (struct bfd_link_hash_entry **) &h))) | |
5307 | return false; | |
5308 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; | |
5309 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
5310 | h->type = STT_OBJECT; | |
5311 | ||
5312 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5313 | return false; | |
5314 | } | |
53787b23 ILT |
5315 | } |
5316 | ||
5b3b9ff6 ILT |
5317 | return true; |
5318 | } | |
5319 | ||
53787b23 ILT |
5320 | /* Create the .compact_rel section. */ |
5321 | ||
5322 | static boolean | |
5323 | mips_elf_create_compact_rel_section (abfd, info) | |
5324 | bfd *abfd; | |
5325 | struct bfd_link_info *info; | |
5326 | { | |
5327 | flagword flags; | |
5328 | register asection *s; | |
5329 | ||
5330 | if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) | |
5331 | { | |
ff12f303 ILT |
5332 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED |
5333 | | SEC_READONLY); | |
53787b23 ILT |
5334 | |
5335 | s = bfd_make_section (abfd, ".compact_rel"); | |
5336 | if (s == NULL | |
5337 | || ! bfd_set_section_flags (abfd, s, flags) | |
5338 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
5339 | return false; | |
5340 | ||
5341 | s->_raw_size = sizeof (Elf32_External_compact_rel); | |
5342 | } | |
5343 | ||
5344 | return true; | |
5345 | } | |
ff12f303 | 5346 | |
5b3b9ff6 ILT |
5347 | /* Create the .got section to hold the global offset table. */ |
5348 | ||
5349 | static boolean | |
5350 | mips_elf_create_got_section (abfd, info) | |
5351 | bfd *abfd; | |
5352 | struct bfd_link_info *info; | |
5353 | { | |
5354 | flagword flags; | |
5355 | register asection *s; | |
5356 | struct elf_link_hash_entry *h; | |
5357 | struct mips_got_info *g; | |
5358 | ||
5359 | /* This function may be called more than once. */ | |
5360 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
5361 | return true; | |
5362 | ||
ff12f303 ILT |
5363 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
5364 | | SEC_LINKER_CREATED); | |
5b3b9ff6 ILT |
5365 | |
5366 | s = bfd_make_section (abfd, ".got"); | |
5367 | if (s == NULL | |
5368 | || ! bfd_set_section_flags (abfd, s, flags) | |
5369 | || ! bfd_set_section_alignment (abfd, s, 4)) | |
5370 | return false; | |
5371 | ||
5372 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
5373 | linker script because we don't want to define the symbol if we | |
53787b23 | 5374 | are not creating a global offset table. */ |
5b3b9ff6 ILT |
5375 | h = NULL; |
5376 | if (! (_bfd_generic_link_add_one_symbol | |
5377 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
5378 | (bfd_vma) 0, (const char *) NULL, false, | |
5379 | get_elf_backend_data (abfd)->collect, | |
5380 | (struct bfd_link_hash_entry **) &h))) | |
5381 | return false; | |
e9f03cd4 | 5382 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; |
5b3b9ff6 ILT |
5383 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
5384 | h->type = STT_OBJECT; | |
5385 | ||
5386 | if (info->shared | |
5387 | && ! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5388 | return false; | |
5389 | ||
5390 | /* The first several global offset table entries are reserved. */ | |
5391 | s->_raw_size = MIPS_RESERVED_GOTNO * 4; | |
5392 | ||
5393 | g = (struct mips_got_info *) bfd_alloc (abfd, | |
5394 | sizeof (struct mips_got_info)); | |
5395 | if (g == NULL) | |
5396 | return false; | |
5397 | g->global_gotsym = 0; | |
5398 | g->local_gotno = MIPS_RESERVED_GOTNO; | |
5399 | if (elf_section_data (s) == NULL) | |
5400 | { | |
5401 | s->used_by_bfd = | |
5402 | (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); | |
5403 | if (elf_section_data (s) == NULL) | |
5404 | return false; | |
5405 | } | |
5406 | elf_section_data (s)->tdata = (PTR) g; | |
5407 | ||
5408 | return true; | |
5409 | } | |
5410 | ||
5411 | /* Look through the relocs for a section during the first phase, and | |
5412 | allocate space in the global offset table. */ | |
5413 | ||
5414 | static boolean | |
5415 | mips_elf_check_relocs (abfd, info, sec, relocs) | |
5416 | bfd *abfd; | |
5417 | struct bfd_link_info *info; | |
5418 | asection *sec; | |
5419 | const Elf_Internal_Rela *relocs; | |
5420 | { | |
e900e695 | 5421 | const char *name; |
5b3b9ff6 ILT |
5422 | bfd *dynobj; |
5423 | Elf_Internal_Shdr *symtab_hdr; | |
5424 | struct elf_link_hash_entry **sym_hashes; | |
5425 | struct mips_got_info *g; | |
5426 | size_t extsymoff; | |
5427 | const Elf_Internal_Rela *rel; | |
5428 | const Elf_Internal_Rela *rel_end; | |
5429 | asection *sgot; | |
5430 | asection *sreloc; | |
5b3b9ff6 ILT |
5431 | |
5432 | if (info->relocateable) | |
5433 | return true; | |
5434 | ||
5435 | dynobj = elf_hash_table (info)->dynobj; | |
5436 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5437 | sym_hashes = elf_sym_hashes (abfd); | |
5438 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
5439 | ||
e900e695 ILT |
5440 | /* Check for the mips16 stub sections. */ |
5441 | ||
5442 | name = bfd_get_section_name (abfd, sec); | |
5443 | if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) | |
5444 | { | |
5445 | unsigned long r_symndx; | |
5446 | ||
5447 | /* Look at the relocation information to figure out which symbol | |
5448 | this is for. */ | |
5449 | ||
5450 | r_symndx = ELF32_R_SYM (relocs->r_info); | |
5451 | ||
5452 | if (r_symndx < extsymoff | |
5453 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
5454 | { | |
5455 | asection *o; | |
5456 | ||
5457 | /* This stub is for a local symbol. This stub will only be | |
5458 | needed if there is some relocation in this BFD, other | |
5459 | than a 16 bit function call, which refers to this symbol. */ | |
5460 | for (o = abfd->sections; o != NULL; o = o->next) | |
5461 | { | |
5462 | Elf_Internal_Rela *sec_relocs; | |
5463 | const Elf_Internal_Rela *r, *rend; | |
5464 | ||
5465 | /* We can ignore stub sections when looking for relocs. */ | |
5466 | if ((o->flags & SEC_RELOC) == 0 | |
5467 | || o->reloc_count == 0 | |
5468 | || strncmp (bfd_get_section_name (abfd, o), FN_STUB, | |
5469 | sizeof FN_STUB - 1) == 0 | |
5470 | || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, | |
5471 | sizeof CALL_STUB - 1) == 0 | |
5472 | || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, | |
5473 | sizeof CALL_FP_STUB - 1) == 0) | |
5474 | continue; | |
5475 | ||
5476 | sec_relocs = (_bfd_elf32_link_read_relocs | |
5477 | (abfd, o, (PTR) NULL, | |
5478 | (Elf_Internal_Rela *) NULL, | |
5479 | info->keep_memory)); | |
5480 | if (sec_relocs == NULL) | |
5481 | return false; | |
5482 | ||
5483 | rend = sec_relocs + o->reloc_count; | |
5484 | for (r = sec_relocs; r < rend; r++) | |
5485 | if (ELF32_R_SYM (r->r_info) == r_symndx | |
5486 | && ELF32_R_TYPE (r->r_info) != R_MIPS16_26) | |
5487 | break; | |
5488 | ||
5489 | if (! info->keep_memory) | |
5490 | free (sec_relocs); | |
5491 | ||
5492 | if (r < rend) | |
5493 | break; | |
5494 | } | |
5495 | ||
5496 | if (o == NULL) | |
5497 | { | |
5498 | /* There is no non-call reloc for this stub, so we do | |
5499 | not need it. Since this function is called before | |
5500 | the linker maps input sections to output sections, we | |
5501 | can easily discard it by setting the SEC_EXCLUDE | |
5502 | flag. */ | |
5503 | sec->flags |= SEC_EXCLUDE; | |
5504 | return true; | |
5505 | } | |
5506 | ||
5507 | /* Record this stub in an array of local symbol stubs for | |
5508 | this BFD. */ | |
5509 | if (elf_tdata (abfd)->local_stubs == NULL) | |
5510 | { | |
5511 | unsigned long symcount; | |
5512 | asection **n; | |
5513 | ||
5514 | if (elf_bad_symtab (abfd)) | |
5515 | symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
5516 | else | |
5517 | symcount = symtab_hdr->sh_info; | |
5518 | n = (asection **) bfd_zalloc (abfd, | |
5519 | symcount * sizeof (asection *)); | |
5520 | if (n == NULL) | |
5521 | return false; | |
5522 | elf_tdata (abfd)->local_stubs = n; | |
5523 | } | |
5524 | ||
5525 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; | |
5526 | ||
5527 | /* We don't need to set mips16_stubs_seen in this case. | |
5528 | That flag is used to see whether we need to look through | |
5529 | the global symbol table for stubs. We don't need to set | |
5530 | it here, because we just have a local stub. */ | |
5531 | } | |
5532 | else | |
5533 | { | |
5534 | struct mips_elf_link_hash_entry *h; | |
5535 | ||
5536 | h = ((struct mips_elf_link_hash_entry *) | |
5537 | sym_hashes[r_symndx - extsymoff]); | |
5538 | ||
5539 | /* H is the symbol this stub is for. */ | |
5540 | ||
5541 | h->fn_stub = sec; | |
5542 | mips_elf_hash_table (info)->mips16_stubs_seen = true; | |
5543 | } | |
5544 | } | |
5545 | else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 | |
5546 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
5547 | { | |
5548 | unsigned long r_symndx; | |
5549 | struct mips_elf_link_hash_entry *h; | |
5550 | asection **loc; | |
5551 | ||
5552 | /* Look at the relocation information to figure out which symbol | |
5553 | this is for. */ | |
5554 | ||
5555 | r_symndx = ELF32_R_SYM (relocs->r_info); | |
5556 | ||
5557 | if (r_symndx < extsymoff | |
5558 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
5559 | { | |
5560 | /* This stub was actually built for a static symbol defined | |
5561 | in the same file. We assume that all static symbols in | |
5562 | mips16 code are themselves mips16, so we can simply | |
5563 | discard this stub. Since this function is called before | |
5564 | the linker maps input sections to output sections, we can | |
5565 | easily discard it by setting the SEC_EXCLUDE flag. */ | |
5566 | sec->flags |= SEC_EXCLUDE; | |
5567 | return true; | |
5568 | } | |
5569 | ||
5570 | h = ((struct mips_elf_link_hash_entry *) | |
5571 | sym_hashes[r_symndx - extsymoff]); | |
5572 | ||
5573 | /* H is the symbol this stub is for. */ | |
5574 | ||
5575 | if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) | |
5576 | loc = &h->call_fp_stub; | |
5577 | else | |
5578 | loc = &h->call_stub; | |
5579 | ||
5580 | /* If we already have an appropriate stub for this function, we | |
5581 | don't need another one, so we can discard this one. Since | |
5582 | this function is called before the linker maps input sections | |
5583 | to output sections, we can easily discard it by setting the | |
5584 | SEC_EXCLUDE flag. We can also discard this section if we | |
5585 | happen to already know that this is a mips16 function; it is | |
5586 | not necessary to check this here, as it is checked later, but | |
5587 | it is slightly faster to check now. */ | |
5588 | if (*loc != NULL || h->root.other == STO_MIPS16) | |
5589 | { | |
5590 | sec->flags |= SEC_EXCLUDE; | |
5591 | return true; | |
5592 | } | |
5593 | ||
5594 | *loc = sec; | |
5595 | mips_elf_hash_table (info)->mips16_stubs_seen = true; | |
5596 | } | |
5597 | ||
4da624dd ILT |
5598 | if (dynobj == NULL) |
5599 | { | |
5600 | sgot = NULL; | |
5601 | g = NULL; | |
5602 | } | |
5603 | else | |
5604 | { | |
5605 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
fe4ff515 ILT |
5606 | if (sgot == NULL) |
5607 | g = NULL; | |
5608 | else | |
5609 | { | |
5610 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
5611 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
5612 | BFD_ASSERT (g != NULL); | |
5613 | } | |
4da624dd ILT |
5614 | } |
5615 | ||
5b3b9ff6 | 5616 | sreloc = NULL; |
5b3b9ff6 ILT |
5617 | |
5618 | rel_end = relocs + sec->reloc_count; | |
5619 | for (rel = relocs; rel < rel_end; rel++) | |
5620 | { | |
5621 | unsigned long r_symndx; | |
5622 | struct elf_link_hash_entry *h; | |
5623 | ||
5624 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5625 | ||
5626 | if (r_symndx < extsymoff) | |
5627 | h = NULL; | |
5628 | else | |
5629 | h = sym_hashes[r_symndx - extsymoff]; | |
5630 | ||
5631 | /* Some relocs require a global offset table. */ | |
4da624dd | 5632 | if (dynobj == NULL || sgot == NULL) |
5b3b9ff6 ILT |
5633 | { |
5634 | switch (ELF32_R_TYPE (rel->r_info)) | |
5635 | { | |
5636 | case R_MIPS_GOT16: | |
5637 | case R_MIPS_CALL16: | |
5638 | case R_MIPS_CALL_HI16: | |
5639 | case R_MIPS_CALL_LO16: | |
5640 | case R_MIPS_GOT_HI16: | |
5641 | case R_MIPS_GOT_LO16: | |
4da624dd ILT |
5642 | if (dynobj == NULL) |
5643 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
5b3b9ff6 ILT |
5644 | if (! mips_elf_create_got_section (dynobj, info)) |
5645 | return false; | |
4da624dd ILT |
5646 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
5647 | BFD_ASSERT (sgot != NULL); | |
5648 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
5649 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
5650 | BFD_ASSERT (g != NULL); | |
5651 | break; | |
5652 | ||
5653 | case R_MIPS_32: | |
5654 | case R_MIPS_REL32: | |
5655 | if (dynobj == NULL | |
5656 | && (info->shared || h != NULL) | |
5657 | && (sec->flags & SEC_ALLOC) != 0) | |
5658 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
5b3b9ff6 ILT |
5659 | break; |
5660 | ||
5661 | default: | |
5662 | break; | |
5663 | } | |
5664 | } | |
5665 | ||
5666 | switch (ELF32_R_TYPE (rel->r_info)) | |
5667 | { | |
5668 | case R_MIPS_CALL16: | |
5669 | case R_MIPS_CALL_HI16: | |
5670 | case R_MIPS_CALL_LO16: | |
5671 | /* This symbol requires a global offset table entry. */ | |
5b3b9ff6 ILT |
5672 | |
5673 | BFD_ASSERT (h != NULL); | |
5674 | ||
5675 | /* Make sure this symbol is output as a dynamic symbol. */ | |
5676 | if (h->dynindx == -1) | |
5677 | { | |
5678 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5679 | return false; | |
5680 | } | |
5681 | ||
5682 | if (h->got_offset != (bfd_vma) -1) | |
5683 | { | |
5684 | /* We have already allocated space in the .got. */ | |
5685 | break; | |
5686 | } | |
5687 | ||
5688 | /* Note the index of the first global got symbol in .dynsym. */ | |
5689 | if (g->global_gotsym == 0 | |
5690 | || g->global_gotsym > (unsigned long) h->dynindx) | |
5691 | g->global_gotsym = h->dynindx; | |
5692 | ||
5693 | /* Make this symbol to have the corresponding got entry. */ | |
5694 | h->got_offset = 0; | |
5695 | ||
5696 | /* We need a stub, not a plt entry for the undefined | |
5697 | function. But we record it as if it needs plt. See | |
5698 | elf_adjust_dynamic_symbol in elflink.h. */ | |
5699 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
5700 | h->type = STT_FUNC; | |
5701 | ||
5702 | break; | |
5703 | ||
5704 | case R_MIPS_GOT16: | |
5705 | case R_MIPS_GOT_HI16: | |
5706 | case R_MIPS_GOT_LO16: | |
5707 | /* This symbol requires a global offset table entry. */ | |
5b3b9ff6 ILT |
5708 | |
5709 | if (h != NULL) | |
5710 | { | |
5711 | /* Make sure this symbol is output as a dynamic symbol. */ | |
5712 | if (h->dynindx == -1) | |
5713 | { | |
5714 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
5715 | return false; | |
5716 | } | |
5717 | ||
5718 | if (h->got_offset != (bfd_vma) -1) | |
5719 | { | |
5720 | /* We have already allocated space in the .got. */ | |
5721 | break; | |
5722 | } | |
5723 | /* Note the index of the first global got symbol in | |
5724 | .dynsym. */ | |
5725 | if (g->global_gotsym == 0 | |
5726 | || g->global_gotsym > (unsigned long) h->dynindx) | |
5727 | g->global_gotsym = h->dynindx; | |
5728 | ||
5729 | /* Make this symbol to be the global got symbol. */ | |
5730 | h->got_offset = 0; | |
5731 | } | |
5732 | ||
5733 | break; | |
5734 | ||
5735 | case R_MIPS_32: | |
5736 | case R_MIPS_REL32: | |
abec70b9 | 5737 | if ((info->shared || h != NULL) |
5b3b9ff6 ILT |
5738 | && (sec->flags & SEC_ALLOC) != 0) |
5739 | { | |
4da624dd ILT |
5740 | if (sreloc == NULL) |
5741 | { | |
5742 | const char *name = ".rel.dyn"; | |
5743 | ||
5744 | sreloc = bfd_get_section_by_name (dynobj, name); | |
5745 | if (sreloc == NULL) | |
5746 | { | |
5747 | sreloc = bfd_make_section (dynobj, name); | |
5748 | if (sreloc == NULL | |
5749 | || ! bfd_set_section_flags (dynobj, sreloc, | |
5750 | (SEC_ALLOC | |
5751 | | SEC_LOAD | |
5752 | | SEC_HAS_CONTENTS | |
5753 | | SEC_IN_MEMORY | |
ff12f303 | 5754 | | SEC_LINKER_CREATED |
4da624dd ILT |
5755 | | SEC_READONLY)) |
5756 | || ! bfd_set_section_alignment (dynobj, sreloc, | |
5757 | 4)) | |
5758 | return false; | |
5759 | } | |
5760 | } | |
9b292d4c | 5761 | if (info->shared) |
5b3b9ff6 | 5762 | { |
9b292d4c ILT |
5763 | /* When creating a shared object, we must copy these |
5764 | reloc types into the output file as R_MIPS_REL32 | |
4da624dd ILT |
5765 | relocs. We make room for this reloc in the |
5766 | .rel.dyn reloc section */ | |
5767 | if (sreloc->_raw_size == 0) | |
5b3b9ff6 | 5768 | { |
4da624dd ILT |
5769 | /* Add a null element. */ |
5770 | sreloc->_raw_size += sizeof (Elf32_External_Rel); | |
5771 | ++sreloc->reloc_count; | |
5b3b9ff6 | 5772 | } |
9b292d4c ILT |
5773 | sreloc->_raw_size += sizeof (Elf32_External_Rel); |
5774 | } | |
abec70b9 ILT |
5775 | else |
5776 | { | |
5777 | struct mips_elf_link_hash_entry *hmips; | |
5778 | ||
5779 | /* We only need to copy this reloc if the symbol is | |
5780 | defined in a dynamic object. */ | |
5781 | hmips = (struct mips_elf_link_hash_entry *) h; | |
5782 | ++hmips->mips_32_relocs; | |
5783 | } | |
5b3b9ff6 ILT |
5784 | } |
5785 | ||
53787b23 ILT |
5786 | if (SGI_COMPAT (abfd)) |
5787 | mips_elf_hash_table (info)->compact_rel_size += | |
5788 | sizeof (Elf32_External_crinfo); | |
5789 | ||
5b3b9ff6 ILT |
5790 | break; |
5791 | ||
5792 | case R_MIPS_26: | |
5793 | case R_MIPS_GPREL16: | |
5794 | case R_MIPS_LITERAL: | |
5795 | case R_MIPS_GPREL32: | |
53787b23 ILT |
5796 | if (SGI_COMPAT (abfd)) |
5797 | mips_elf_hash_table (info)->compact_rel_size += | |
5798 | sizeof (Elf32_External_crinfo); | |
5b3b9ff6 ILT |
5799 | break; |
5800 | ||
5801 | default: | |
5802 | break; | |
5803 | } | |
e900e695 ILT |
5804 | |
5805 | /* If this reloc is not a 16 bit call, and it has a global | |
5806 | symbol, then we will need the fn_stub if there is one. | |
5807 | References from a stub section do not count. */ | |
5808 | if (h != NULL | |
5809 | && ELF32_R_TYPE (rel->r_info) != R_MIPS16_26 | |
5810 | && strncmp (bfd_get_section_name (abfd, sec), FN_STUB, | |
5811 | sizeof FN_STUB - 1) != 0 | |
5812 | && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB, | |
5813 | sizeof CALL_STUB - 1) != 0 | |
5814 | && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB, | |
5815 | sizeof CALL_FP_STUB - 1) != 0) | |
5816 | { | |
5817 | struct mips_elf_link_hash_entry *mh; | |
5818 | ||
5819 | mh = (struct mips_elf_link_hash_entry *) h; | |
5820 | mh->need_fn_stub = true; | |
5821 | } | |
5b3b9ff6 ILT |
5822 | } |
5823 | ||
5824 | return true; | |
5825 | } | |
5826 | ||
5827 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5828 | regular object. The current definition is in some section of the | |
5829 | dynamic object, but we're not including those sections. We have to | |
5830 | change the definition to something the rest of the link can | |
5831 | understand. */ | |
5832 | ||
5833 | static boolean | |
5834 | mips_elf_adjust_dynamic_symbol (info, h) | |
5835 | struct bfd_link_info *info; | |
5836 | struct elf_link_hash_entry *h; | |
5837 | { | |
5838 | bfd *dynobj; | |
abec70b9 | 5839 | struct mips_elf_link_hash_entry *hmips; |
5b3b9ff6 ILT |
5840 | asection *s; |
5841 | ||
5842 | dynobj = elf_hash_table (info)->dynobj; | |
5843 | ||
5844 | /* Make sure we know what is going on here. */ | |
5845 | BFD_ASSERT (dynobj != NULL | |
5846 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
5847 | || h->weakdef != NULL | |
5848 | || ((h->elf_link_hash_flags | |
5849 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
5850 | && (h->elf_link_hash_flags | |
5851 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
5852 | && (h->elf_link_hash_flags | |
5853 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
5854 | ||
abec70b9 ILT |
5855 | /* If this symbol is defined in a dynamic object, we need to copy |
5856 | any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output | |
5857 | file. */ | |
5858 | hmips = (struct mips_elf_link_hash_entry *) h; | |
5859 | if (! info->relocateable | |
5860 | && hmips->mips_32_relocs != 0 | |
5861 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
5862 | { | |
5863 | s = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
5864 | BFD_ASSERT (s != NULL); | |
5865 | ||
4da624dd ILT |
5866 | if (s->_raw_size == 0) |
5867 | { | |
5868 | /* Make room for a null element. */ | |
5869 | s->_raw_size += sizeof (Elf32_External_Rel); | |
5870 | ++s->reloc_count; | |
5871 | } | |
abec70b9 ILT |
5872 | s->_raw_size += hmips->mips_32_relocs * sizeof (Elf32_External_Rel); |
5873 | } | |
5874 | ||
5b3b9ff6 ILT |
5875 | /* For a function, create a stub, if needed. */ |
5876 | if (h->type == STT_FUNC | |
5877 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
5878 | { | |
5879 | if (! elf_hash_table (info)->dynamic_sections_created) | |
5880 | return true; | |
5881 | ||
5882 | /* If this symbol is not defined in a regular file, then set | |
5883 | the symbol to the stub location. This is required to make | |
5884 | function pointers compare as equal between the normal | |
5885 | executable and the shared library. */ | |
5886 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
5887 | { | |
5888 | /* We need .stub section. */ | |
5889 | s = bfd_get_section_by_name (dynobj, ".stub"); | |
5890 | BFD_ASSERT (s != NULL); | |
5891 | ||
5892 | h->root.u.def.section = s; | |
5893 | h->root.u.def.value = s->_raw_size; | |
5894 | ||
5895 | /* XXX Write this stub address somewhere. */ | |
5896 | h->plt_offset = s->_raw_size; | |
5897 | ||
5898 | /* Make room for this stub code. */ | |
5899 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
5900 | ||
5901 | /* The last half word of the stub will be filled with the index | |
5902 | of this symbol in .dynsym section. */ | |
5903 | return true; | |
5904 | } | |
5905 | } | |
5906 | ||
5907 | /* If this is a weak symbol, and there is a real definition, the | |
5908 | processor independent code will have arranged for us to see the | |
5909 | real definition first, and we can just use the same value. */ | |
5910 | if (h->weakdef != NULL) | |
5911 | { | |
5912 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
5913 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
5914 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
5915 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
5916 | return true; | |
5917 | } | |
5918 | ||
5919 | /* This is a reference to a symbol defined by a dynamic object which | |
5920 | is not a function. */ | |
5921 | ||
5922 | return true; | |
5923 | } | |
5924 | ||
e900e695 ILT |
5925 | /* This function is called after all the input files have been read, |
5926 | and the input sections have been assigned to output sections. We | |
5927 | check for any mips16 stub sections that we can discard. */ | |
5928 | ||
5929 | static boolean mips_elf_check_mips16_stubs | |
5930 | PARAMS ((struct mips_elf_link_hash_entry *, PTR)); | |
5931 | ||
5932 | static boolean | |
5933 | mips_elf_always_size_sections (output_bfd, info) | |
5934 | bfd *output_bfd; | |
5935 | struct bfd_link_info *info; | |
5936 | { | |
5937 | if (info->relocateable | |
5938 | || ! mips_elf_hash_table (info)->mips16_stubs_seen) | |
5939 | return true; | |
5940 | ||
5941 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), | |
5942 | mips_elf_check_mips16_stubs, | |
5943 | (PTR) NULL); | |
5944 | ||
5945 | return true; | |
5946 | } | |
5947 | ||
5948 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
5949 | discard them. */ | |
5950 | ||
5951 | /*ARGSUSED*/ | |
5952 | static boolean | |
5953 | mips_elf_check_mips16_stubs (h, data) | |
5954 | struct mips_elf_link_hash_entry *h; | |
5955 | PTR data; | |
5956 | { | |
5957 | if (h->fn_stub != NULL | |
5958 | && ! h->need_fn_stub) | |
5959 | { | |
5960 | /* We don't need the fn_stub; the only references to this symbol | |
5961 | are 16 bit calls. Clobber the size to 0 to prevent it from | |
5962 | being included in the link. */ | |
5963 | h->fn_stub->_raw_size = 0; | |
5964 | h->fn_stub->_cooked_size = 0; | |
5965 | h->fn_stub->flags &= ~ SEC_RELOC; | |
5966 | h->fn_stub->reloc_count = 0; | |
5967 | h->fn_stub->flags |= SEC_EXCLUDE; | |
5968 | } | |
5969 | ||
5970 | if (h->call_stub != NULL | |
5971 | && h->root.other == STO_MIPS16) | |
5972 | { | |
5973 | /* We don't need the call_stub; this is a 16 bit function, so | |
5974 | calls from other 16 bit functions are OK. Clobber the size | |
5975 | to 0 to prevent it from being included in the link. */ | |
5976 | h->call_stub->_raw_size = 0; | |
5977 | h->call_stub->_cooked_size = 0; | |
5978 | h->call_stub->flags &= ~ SEC_RELOC; | |
5979 | h->call_stub->reloc_count = 0; | |
5980 | h->call_stub->flags |= SEC_EXCLUDE; | |
5981 | } | |
5982 | ||
5983 | if (h->call_fp_stub != NULL | |
5984 | && h->root.other == STO_MIPS16) | |
5985 | { | |
5986 | /* We don't need the call_stub; this is a 16 bit function, so | |
5987 | calls from other 16 bit functions are OK. Clobber the size | |
5988 | to 0 to prevent it from being included in the link. */ | |
5989 | h->call_fp_stub->_raw_size = 0; | |
5990 | h->call_fp_stub->_cooked_size = 0; | |
5991 | h->call_fp_stub->flags &= ~ SEC_RELOC; | |
5992 | h->call_fp_stub->reloc_count = 0; | |
5993 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
5994 | } | |
5995 | ||
5996 | return true; | |
5997 | } | |
5998 | ||
5b3b9ff6 ILT |
5999 | /* Set the sizes of the dynamic sections. */ |
6000 | ||
6001 | static boolean | |
6002 | mips_elf_size_dynamic_sections (output_bfd, info) | |
6003 | bfd *output_bfd; | |
6004 | struct bfd_link_info *info; | |
6005 | { | |
6006 | bfd *dynobj; | |
6007 | asection *s; | |
6008 | boolean reltext; | |
6009 | asection *sgot; | |
6010 | struct mips_got_info *g; | |
6011 | ||
6012 | dynobj = elf_hash_table (info)->dynobj; | |
6013 | BFD_ASSERT (dynobj != NULL); | |
6014 | ||
6015 | if (elf_hash_table (info)->dynamic_sections_created) | |
6016 | { | |
6017 | /* Set the contents of the .interp section to the interpreter. */ | |
6018 | if (! info->shared) | |
6019 | { | |
6020 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
6021 | BFD_ASSERT (s != NULL); | |
6022 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
6023 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
6024 | } | |
6025 | } | |
6026 | ||
6027 | /* Recompute the size of .got for local entires (reserved and | |
6028 | hipages) if needed. To estimate it, get the upper bound of total | |
6029 | size of loadable sections. */ | |
6030 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
6031 | ||
6032 | if (sgot != NULL) | |
6033 | { | |
6034 | bfd_size_type loadable_size = 0; | |
6035 | bfd_size_type local_gotno; | |
6036 | struct _bfd *sub; | |
6037 | ||
6038 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
6039 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
6040 | BFD_ASSERT (g != NULL); | |
6041 | ||
6042 | for (sub = info->input_bfds; sub; sub = sub->link_next) | |
6043 | for (s = sub->sections; s != NULL; s = s->next) | |
6044 | { | |
6045 | if ((s->flags & SEC_ALLOC) == 0) | |
6046 | continue; | |
6047 | loadable_size += (s->_raw_size + 0xf) & ~0xf; | |
6048 | } | |
6049 | ||
6050 | loadable_size += MIPS_FUNCTION_STUB_SIZE; | |
6051 | ||
6052 | /* Assume there are two loadable segments consisting of | |
6053 | contiguous sections. Is 5 enough? */ | |
6054 | local_gotno = (loadable_size >> 16) + 5 + MIPS_RESERVED_GOTNO; | |
6055 | g->local_gotno = local_gotno; | |
6056 | sgot->_raw_size += local_gotno * 4; | |
6057 | } | |
6058 | ||
6059 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
6060 | determined the sizes of the various dynamic sections. Allocate | |
6061 | memory for them. */ | |
6062 | reltext = false; | |
6063 | for (s = dynobj->sections; s != NULL; s = s->next) | |
6064 | { | |
6065 | const char *name; | |
6066 | boolean strip; | |
6067 | ||
6068 | /* It's OK to base decisions on the section name, because none | |
6069 | of the dynobj section names depend upon the input files. */ | |
6070 | name = bfd_get_section_name (dynobj, s); | |
6071 | ||
ff12f303 | 6072 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
5b3b9ff6 ILT |
6073 | continue; |
6074 | ||
6075 | strip = false; | |
6076 | ||
6077 | if (strncmp (name, ".rel", 4) == 0) | |
6078 | { | |
6079 | if (s->_raw_size == 0) | |
6080 | strip = true; | |
6081 | else | |
6082 | { | |
9950f925 | 6083 | const char *outname; |
5b3b9ff6 ILT |
6084 | asection *target; |
6085 | ||
6086 | /* If this relocation section applies to a read only | |
6087 | section, then we probably need a DT_TEXTREL entry. | |
6088 | If the relocation section is .rel.dyn, we always | |
6089 | assert a DT_TEXTREL entry rather than testing whether | |
6090 | there exists a relocation to a read only section or | |
6091 | not. */ | |
9950f925 ILT |
6092 | outname = bfd_get_section_name (output_bfd, |
6093 | s->output_section); | |
6094 | target = bfd_get_section_by_name (output_bfd, outname + 4); | |
5b3b9ff6 | 6095 | if ((target != NULL && (target->flags & SEC_READONLY) != 0) |
9950f925 | 6096 | || strcmp (outname, ".rel.dyn") == 0) |
5b3b9ff6 ILT |
6097 | reltext = true; |
6098 | ||
6099 | /* We use the reloc_count field as a counter if we need | |
6100 | to copy relocs into the output file. */ | |
6101 | if (strcmp (name, ".rel.dyn") != 0) | |
6102 | s->reloc_count = 0; | |
6103 | } | |
6104 | } | |
6105 | else if (strncmp (name, ".got", 4) == 0) | |
6106 | { | |
6107 | int i; | |
6108 | ||
6109 | BFD_ASSERT (elf_section_data (s) != NULL); | |
6110 | g = (struct mips_got_info *) elf_section_data (s)->tdata; | |
6111 | BFD_ASSERT (g != NULL); | |
6112 | ||
6113 | /* Fix the size of .got section for the correspondence of | |
6114 | global symbols and got entries. This adds some useless | |
6115 | got entries. Is this required by ABI really? */ | |
6116 | i = elf_hash_table (info)->dynsymcount - g->global_gotsym; | |
6117 | s->_raw_size += i * 4; | |
6118 | } | |
6119 | else if (strncmp (name, ".stub", 5) == 0) | |
6120 | { | |
6121 | /* Irix rld assumes that the function stub isn't at the end | |
6122 | of .text section. So put a dummy. XXX */ | |
6123 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; | |
6124 | } | |
eb52b9dc ILT |
6125 | else if (! info->shared |
6126 | && ! mips_elf_hash_table (info)->use_rld_obj_head | |
6127 | && strncmp (name, ".rld_map", 8) == 0) | |
6128 | { | |
6129 | /* We add a room for __rld_map. It will be filled in by the | |
6130 | rtld to contain a pointer to the _r_debug structure. */ | |
6131 | s->_raw_size += 4; | |
6132 | } | |
53787b23 ILT |
6133 | else if (SGI_COMPAT (output_bfd) |
6134 | && strncmp (name, ".compact_rel", 12) == 0) | |
6135 | s->_raw_size += mips_elf_hash_table (info)->compact_rel_size; | |
6136 | else if (strncmp (name, ".init", 5) != 0) | |
5b3b9ff6 ILT |
6137 | { |
6138 | /* It's not one of our sections, so don't allocate space. */ | |
6139 | continue; | |
6140 | } | |
6141 | ||
6142 | if (strip) | |
6143 | { | |
6144 | asection **spp; | |
6145 | ||
6146 | for (spp = &s->output_section->owner->sections; | |
6147 | *spp != s->output_section; | |
6148 | spp = &(*spp)->next) | |
6149 | ; | |
6150 | *spp = s->output_section->next; | |
6151 | --s->output_section->owner->section_count; | |
6152 | ||
6153 | continue; | |
6154 | } | |
6155 | ||
6156 | /* Allocate memory for the section contents. */ | |
6157 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); | |
6158 | if (s->contents == NULL && s->_raw_size != 0) | |
6159 | { | |
6160 | bfd_set_error (bfd_error_no_memory); | |
6161 | return false; | |
6162 | } | |
6163 | memset (s->contents, 0, s->_raw_size); | |
6164 | } | |
6165 | ||
6166 | if (elf_hash_table (info)->dynamic_sections_created) | |
6167 | { | |
6168 | /* Add some entries to the .dynamic section. We fill in the | |
6169 | values later, in elf_mips_finish_dynamic_sections, but we | |
6170 | must add the entries now so that we get the correct size for | |
6171 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6172 | dynamic linker and used by the debugger. */ | |
6173 | if (! info->shared) | |
6174 | { | |
eb52b9dc ILT |
6175 | if (SGI_COMPAT (output_bfd)) |
6176 | { | |
6177 | /* SGI object has the equivalence of DT_DEBUG in the | |
6178 | DT_MIPS_RLD_MAP entry. */ | |
6179 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0)) | |
6180 | return false; | |
6181 | } | |
6182 | else | |
6183 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
6184 | return false; | |
5b3b9ff6 ILT |
6185 | } |
6186 | ||
6187 | if (reltext) | |
6188 | { | |
6189 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
6190 | return false; | |
6191 | } | |
6192 | ||
6193 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
6194 | return false; | |
6195 | ||
6196 | if (bfd_get_section_by_name (dynobj, ".rel.dyn")) | |
6197 | { | |
6198 | if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0)) | |
6199 | return false; | |
6200 | ||
6201 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0)) | |
6202 | return false; | |
6203 | ||
6204 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELENT, 0)) | |
6205 | return false; | |
6206 | } | |
6207 | ||
6208 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0)) | |
6209 | return false; | |
6210 | ||
6211 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0)) | |
6212 | return false; | |
6213 | ||
53787b23 | 6214 | if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) |
5b3b9ff6 ILT |
6215 | { |
6216 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0)) | |
6217 | return false; | |
6218 | ||
6219 | s = bfd_get_section_by_name (dynobj, ".liblist"); | |
6220 | BFD_ASSERT (s != NULL); | |
6221 | ||
6222 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0)) | |
6223 | return false; | |
6224 | } | |
6225 | ||
6226 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0)) | |
6227 | return false; | |
6228 | ||
6229 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_FLAGS, 0)) | |
6230 | return false; | |
6231 | ||
53787b23 ILT |
6232 | #if 0 |
6233 | /* Time stamps in executable files are a bad idea. */ | |
5b3b9ff6 ILT |
6234 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0)) |
6235 | return false; | |
53787b23 | 6236 | #endif |
5b3b9ff6 ILT |
6237 | |
6238 | #if 0 /* FIXME */ | |
6239 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0)) | |
6240 | return false; | |
6241 | #endif | |
6242 | ||
6243 | #if 0 /* FIXME */ | |
6244 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_IVERSION, 0)) | |
6245 | return false; | |
6246 | #endif | |
6247 | ||
6248 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0)) | |
6249 | return false; | |
6250 | ||
6251 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0)) | |
6252 | return false; | |
6253 | ||
6254 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0)) | |
6255 | return false; | |
6256 | ||
6257 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0)) | |
6258 | return false; | |
6259 | ||
6260 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0)) | |
6261 | return false; | |
6262 | ||
6263 | if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_HIPAGENO, 0)) | |
6264 | return false; | |
6265 | ||
6266 | #if 0 /* (SGI_COMPAT) */ | |
6267 | if (! bfd_get_section_by_name (dynobj, ".init")) | |
6268 | if (! bfd_elf32_add_dynamic_entry (info, DT_INIT, 0)) | |
6269 | return false; | |
6270 | ||
6271 | if (! bfd_get_section_by_name (dynobj, ".fini")) | |
6272 | if (! bfd_elf32_add_dynamic_entry (info, DT_FINI, 0)) | |
6273 | return false; | |
6274 | #endif | |
6275 | } | |
6276 | ||
53787b23 ILT |
6277 | /* If we use dynamic linking, we generate a section symbol for each |
6278 | output section. These are local symbols, which means that they | |
6279 | must come first in the dynamic symbol table. | |
5b3b9ff6 ILT |
6280 | That means we must increment the dynamic symbol index of every |
6281 | other dynamic symbol. */ | |
53787b23 ILT |
6282 | { |
6283 | const char * const *namep; | |
6284 | unsigned int c, i; | |
6285 | bfd_size_type strindex; | |
6286 | struct bfd_strtab_hash *dynstr; | |
6287 | struct mips_got_info *g; | |
6288 | ||
9b292d4c | 6289 | c = 0; |
53787b23 ILT |
6290 | if (elf_hash_table (info)->dynamic_sections_created) |
6291 | { | |
6292 | if (SGI_COMPAT (output_bfd)) | |
6293 | { | |
6294 | c = SIZEOF_MIPS_DYNSYM_SECNAMES - 1; | |
6295 | elf_link_hash_traverse (elf_hash_table (info), | |
6296 | mips_elf_adjust_dynindx, | |
6297 | (PTR) &c); | |
6298 | elf_hash_table (info)->dynsymcount += c; | |
6299 | ||
6300 | dynstr = elf_hash_table (info)->dynstr; | |
6301 | BFD_ASSERT (dynstr != NULL); | |
6302 | ||
6303 | for (i = 1, namep = mips_elf_dynsym_sec_names; | |
6304 | *namep != NULL; | |
6305 | i++, namep++) | |
6306 | { | |
6307 | s = bfd_get_section_by_name (output_bfd, *namep); | |
6308 | if (s != NULL) | |
6309 | elf_section_data (s)->dynindx = i; | |
5b3b9ff6 | 6310 | |
53787b23 ILT |
6311 | strindex = _bfd_stringtab_add (dynstr, *namep, true, false); |
6312 | if (strindex == (bfd_size_type) -1) | |
6313 | return false; | |
5b3b9ff6 | 6314 | |
53787b23 ILT |
6315 | mips_elf_hash_table (info)->dynsym_sec_strindex[i] = strindex; |
6316 | } | |
6317 | } | |
6318 | else | |
6319 | { | |
6320 | c = bfd_count_sections (output_bfd); | |
6321 | elf_link_hash_traverse (elf_hash_table (info), | |
6322 | mips_elf_adjust_dynindx, | |
6323 | (PTR) &c); | |
6324 | elf_hash_table (info)->dynsymcount += c; | |
5b3b9ff6 | 6325 | |
53787b23 ILT |
6326 | for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++) |
6327 | { | |
6328 | elf_section_data (s)->dynindx = i; | |
6329 | /* These symbols will have no names, so we don't need to | |
6330 | fiddle with dynstr_index. */ | |
6331 | } | |
6332 | } | |
6333 | } | |
5b3b9ff6 | 6334 | |
4da624dd ILT |
6335 | if (sgot != NULL) |
6336 | { | |
6337 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
6338 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
6339 | BFD_ASSERT (g != NULL); | |
6340 | ||
6341 | /* If there are no global got symbols, fake the last symbol so | |
6342 | for safety. */ | |
6343 | if (g->global_gotsym) | |
6344 | g->global_gotsym += c; | |
6345 | else | |
6346 | g->global_gotsym = elf_hash_table (info)->dynsymcount - 1; | |
6347 | } | |
53787b23 | 6348 | } |
5b3b9ff6 ILT |
6349 | |
6350 | return true; | |
6351 | } | |
6352 | ||
6353 | /* Increment the index of a dynamic symbol by a given amount. Called | |
6354 | via elf_link_hash_traverse. */ | |
6355 | ||
6356 | static boolean | |
6357 | mips_elf_adjust_dynindx (h, cparg) | |
6358 | struct elf_link_hash_entry *h; | |
6359 | PTR cparg; | |
6360 | { | |
53787b23 | 6361 | unsigned int *cp = (unsigned int *) cparg; |
5b3b9ff6 ILT |
6362 | |
6363 | if (h->dynindx != -1) | |
6364 | h->dynindx += *cp; | |
6365 | return true; | |
6366 | } | |
6367 | ||
6368 | /* Finish up dynamic symbol handling. We set the contents of various | |
6369 | dynamic sections here. */ | |
6370 | ||
6371 | static boolean | |
6372 | mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
6373 | bfd *output_bfd; | |
6374 | struct bfd_link_info *info; | |
6375 | struct elf_link_hash_entry *h; | |
6376 | Elf_Internal_Sym *sym; | |
6377 | { | |
6378 | bfd *dynobj; | |
6379 | bfd_vma gval; | |
6380 | asection *sgot; | |
6381 | struct mips_got_info *g; | |
6382 | const char *name; | |
6383 | ||
6384 | dynobj = elf_hash_table (info)->dynobj; | |
6385 | gval = sym->st_value; | |
6386 | ||
6387 | if (h->plt_offset != (bfd_vma) -1) | |
6388 | { | |
6389 | asection *s; | |
6390 | bfd_byte *p; | |
6391 | bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; | |
6392 | ||
6393 | /* This symbol has a stub. Set it up. */ | |
6394 | ||
6395 | BFD_ASSERT (h->dynindx != -1); | |
6396 | ||
6397 | s = bfd_get_section_by_name (dynobj, ".stub"); | |
6398 | BFD_ASSERT (s != NULL); | |
6399 | ||
6400 | /* Fill the stub. */ | |
6401 | p = stub; | |
6402 | bfd_put_32 (output_bfd, STUB_LW(output_bfd), p); | |
6403 | p += 4; | |
6404 | bfd_put_32 (output_bfd, STUB_MOVE, p); | |
6405 | p += 4; | |
6406 | ||
6407 | /* FIXME: Can h->dynindex be more than 64K? */ | |
6408 | if (h->dynindx & 0xffff0000) | |
6409 | return false; | |
6410 | ||
6411 | bfd_put_32 (output_bfd, STUB_JALR, p); | |
6412 | p += 4; | |
6413 | bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p); | |
6414 | ||
6415 | BFD_ASSERT (h->plt_offset <= s->_raw_size); | |
6416 | memcpy (s->contents + h->plt_offset, stub, MIPS_FUNCTION_STUB_SIZE); | |
6417 | ||
6418 | /* Mark the symbol as undefined. plt_offset != -1 occurs | |
6419 | only for the referenced symbol. */ | |
6420 | sym->st_shndx = SHN_UNDEF; | |
6421 | ||
6422 | /* The run-time linker uses the st_value field of the symbol | |
6423 | to reset the global offset table entry for this external | |
6424 | to its stub address when unlinking a shared object. */ | |
6425 | gval = s->output_section->vma + s->output_offset + h->plt_offset; | |
6426 | sym->st_value = gval; | |
6427 | } | |
6428 | ||
6429 | BFD_ASSERT (h->dynindx != -1); | |
6430 | ||
6431 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
6432 | BFD_ASSERT (sgot != NULL); | |
6433 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
6434 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
6435 | BFD_ASSERT (g != NULL); | |
6436 | ||
6437 | if ((unsigned long) h->dynindx >= g->global_gotsym) | |
6438 | { | |
6439 | bfd_size_type offset; | |
6440 | ||
6441 | /* This symbol has an entry in the global offset table. Set its | |
6442 | value to the corresponding got entry, if needed. */ | |
6443 | if (h->got_offset == (bfd_vma) -1) | |
6444 | { | |
6445 | offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; | |
6446 | BFD_ASSERT (g->local_gotno * 4 <= offset | |
6447 | && offset < sgot->_raw_size); | |
6448 | bfd_put_32 (output_bfd, gval, sgot->contents + offset); | |
6449 | } | |
6450 | } | |
6451 | ||
6452 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
6453 | name = h->root.root.string; | |
6454 | if (strcmp (name, "_DYNAMIC") == 0 | |
6455 | || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) | |
6456 | sym->st_shndx = SHN_ABS; | |
53787b23 ILT |
6457 | else if (strcmp (name, "_DYNAMIC_LINK") == 0) |
6458 | { | |
6459 | sym->st_shndx = SHN_ABS; | |
6460 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6461 | sym->st_value = 1; | |
6462 | } | |
6463 | else if (SGI_COMPAT (output_bfd)) | |
5b3b9ff6 ILT |
6464 | { |
6465 | if (strcmp (name, "_gp_disp") == 0) | |
6466 | { | |
6467 | sym->st_shndx = SHN_ABS; | |
6468 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
abec70b9 | 6469 | sym->st_value = elf_gp (output_bfd); |
5b3b9ff6 ILT |
6470 | } |
6471 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
6472 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
6473 | { | |
6474 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6475 | sym->st_other = STO_PROTECTED; | |
6476 | sym->st_value = 0; | |
6477 | sym->st_shndx = SHN_MIPS_DATA; | |
6478 | } | |
6479 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
6480 | { | |
6481 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6482 | sym->st_other = STO_PROTECTED; | |
6483 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
6484 | sym->st_shndx = SHN_ABS; | |
6485 | } | |
53787b23 | 6486 | else if (sym->st_shndx != SHN_UNDEF) |
5b3b9ff6 ILT |
6487 | { |
6488 | if (h->type == STT_FUNC) | |
6489 | sym->st_shndx = SHN_MIPS_TEXT; | |
6490 | else if (h->type == STT_OBJECT) | |
6491 | sym->st_shndx = SHN_MIPS_DATA; | |
6492 | } | |
6493 | } | |
6494 | ||
eb52b9dc ILT |
6495 | if (SGI_COMPAT (output_bfd) |
6496 | && ! info->shared) | |
6497 | { | |
6498 | if (! mips_elf_hash_table (info)->use_rld_obj_head | |
6499 | && strcmp (name, "__rld_map") == 0) | |
6500 | { | |
6501 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
6502 | BFD_ASSERT (s != NULL); | |
6503 | sym->st_value = s->output_section->vma + s->output_offset; | |
6504 | bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents); | |
6505 | if (mips_elf_hash_table (info)->rld_value == 0) | |
6506 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
6507 | } | |
6508 | else if (mips_elf_hash_table (info)->use_rld_obj_head | |
6509 | && strcmp (name, "__rld_obj_head") == 0) | |
6510 | { | |
6511 | asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); | |
6512 | BFD_ASSERT (s != NULL); | |
6513 | mips_elf_hash_table (info)->rld_value = sym->st_value; | |
6514 | } | |
6515 | } | |
6516 | ||
e4f4813f ILT |
6517 | /* If this is a mips16 symbol, force the value to be even. */ |
6518 | if (sym->st_other == STO_MIPS16 | |
6519 | && (sym->st_value & 1) != 0) | |
6520 | --sym->st_value; | |
6521 | ||
5b3b9ff6 ILT |
6522 | return true; |
6523 | } | |
6524 | ||
6525 | /* Finish up the dynamic sections. */ | |
6526 | ||
6527 | static boolean | |
6528 | mips_elf_finish_dynamic_sections (output_bfd, info) | |
6529 | bfd *output_bfd; | |
6530 | struct bfd_link_info *info; | |
6531 | { | |
6532 | bfd *dynobj; | |
6533 | asection *sdyn; | |
6534 | asection *sgot; | |
6535 | struct mips_got_info *g; | |
6536 | ||
6537 | dynobj = elf_hash_table (info)->dynobj; | |
6538 | ||
6539 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
6540 | ||
6541 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
4da624dd ILT |
6542 | if (sgot == NULL) |
6543 | g = NULL; | |
6544 | else | |
6545 | { | |
6546 | BFD_ASSERT (elf_section_data (sgot) != NULL); | |
6547 | g = (struct mips_got_info *) elf_section_data (sgot)->tdata; | |
6548 | BFD_ASSERT (g != NULL); | |
6549 | } | |
5b3b9ff6 ILT |
6550 | |
6551 | if (elf_hash_table (info)->dynamic_sections_created) | |
6552 | { | |
6553 | Elf32_External_Dyn *dyncon, *dynconend; | |
6554 | ||
6555 | BFD_ASSERT (sdyn != NULL); | |
4da624dd | 6556 | BFD_ASSERT (g != NULL); |
5b3b9ff6 ILT |
6557 | |
6558 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
6559 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
6560 | for (; dyncon < dynconend; dyncon++) | |
6561 | { | |
6562 | Elf_Internal_Dyn dyn; | |
6563 | const char *name; | |
6564 | size_t elemsize; | |
6565 | asection *s; | |
6566 | ||
6567 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
6568 | ||
6569 | switch (dyn.d_tag) | |
6570 | { | |
6571 | default: | |
6572 | break; | |
6573 | ||
6574 | case DT_RELENT: | |
6575 | s = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
6576 | BFD_ASSERT (s != NULL); | |
6577 | dyn.d_un.d_val = sizeof (Elf32_External_Rel); | |
6578 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6579 | break; | |
6580 | ||
6581 | case DT_STRSZ: | |
6582 | /* Rewrite DT_STRSZ. */ | |
6583 | dyn.d_un.d_val = | |
6584 | _bfd_stringtab_size (elf_hash_table (info)->dynstr); | |
6585 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6586 | break; | |
6587 | ||
6588 | case DT_PLTGOT: | |
6589 | name = ".got"; | |
6590 | goto get_vma; | |
6591 | case DT_MIPS_CONFLICT: | |
6592 | name = ".conflict"; | |
6593 | goto get_vma; | |
6594 | case DT_MIPS_LIBLIST: | |
6595 | name = ".liblist"; | |
6596 | get_vma: | |
6597 | s = bfd_get_section_by_name (output_bfd, name); | |
6598 | BFD_ASSERT (s != NULL); | |
6599 | dyn.d_un.d_ptr = s->vma; | |
6600 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6601 | break; | |
6602 | ||
6603 | case DT_MIPS_RLD_VERSION: | |
6604 | dyn.d_un.d_val = 1; /* XXX */ | |
6605 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6606 | break; | |
6607 | ||
6608 | case DT_MIPS_FLAGS: | |
6609 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
6610 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6611 | break; | |
6612 | ||
6613 | case DT_MIPS_CONFLICTNO: | |
6614 | name = ".conflict"; | |
6615 | elemsize = sizeof (Elf32_Conflict); | |
6616 | goto set_elemno; | |
6617 | ||
6618 | case DT_MIPS_LIBLISTNO: | |
6619 | name = ".liblist"; | |
6620 | elemsize = sizeof (Elf32_Lib); | |
6621 | set_elemno: | |
6622 | s = bfd_get_section_by_name (output_bfd, name); | |
6623 | if (s != NULL) | |
6624 | { | |
6625 | if (s->_cooked_size != 0) | |
6626 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
6627 | else | |
6628 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
6629 | } | |
6630 | else | |
6631 | dyn.d_un.d_val = 0; | |
6632 | ||
6633 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6634 | break; | |
6635 | ||
6636 | case DT_MIPS_TIME_STAMP: | |
6637 | time ((time_t *) &dyn.d_un.d_val); | |
6638 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6639 | break; | |
ff12f303 | 6640 | |
5b3b9ff6 ILT |
6641 | case DT_MIPS_ICHECKSUM: |
6642 | /* XXX FIXME: */ | |
6643 | break; | |
6644 | ||
6645 | case DT_MIPS_IVERSION: | |
6646 | /* XXX FIXME: */ | |
6647 | break; | |
6648 | ||
6649 | case DT_MIPS_BASE_ADDRESS: | |
6650 | s = output_bfd->sections; | |
6651 | BFD_ASSERT (s != NULL); | |
6652 | dyn.d_un.d_ptr = s->vma & ~(0xffff); | |
6653 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6654 | break; | |
6655 | ||
6656 | case DT_MIPS_LOCAL_GOTNO: | |
6657 | dyn.d_un.d_val = g->local_gotno; | |
6658 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6659 | break; | |
6660 | ||
6661 | case DT_MIPS_SYMTABNO: | |
6662 | name = ".dynsym"; | |
6663 | elemsize = sizeof (Elf32_External_Sym); | |
6664 | s = bfd_get_section_by_name (output_bfd, name); | |
6665 | BFD_ASSERT (s != NULL); | |
6666 | ||
6667 | if (s->_cooked_size != 0) | |
6668 | dyn.d_un.d_val = s->_cooked_size / elemsize; | |
6669 | else | |
6670 | dyn.d_un.d_val = s->_raw_size / elemsize; | |
6671 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6672 | break; | |
6673 | ||
6674 | case DT_MIPS_UNREFEXTNO: | |
6675 | /* XXX FIXME: */ | |
6676 | dyn.d_un.d_val = SIZEOF_MIPS_DYNSYM_SECNAMES; | |
6677 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6678 | break; | |
6679 | ||
6680 | case DT_MIPS_GOTSYM: | |
6681 | dyn.d_un.d_val = g->global_gotsym; | |
6682 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6683 | break; | |
6684 | ||
6685 | case DT_MIPS_HIPAGENO: | |
6686 | dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; | |
6687 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6688 | break; | |
6689 | ||
eb52b9dc ILT |
6690 | case DT_MIPS_RLD_MAP: |
6691 | dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; | |
6692 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
6693 | break; | |
6694 | ||
5b3b9ff6 ILT |
6695 | } |
6696 | } | |
6697 | } | |
6698 | ||
6699 | /* The first entry of the global offset table will be filled at | |
6700 | runtime. The second entry will be used by some runtime loaders. | |
6701 | This isn't the case of Irix rld. */ | |
4da624dd | 6702 | if (sgot != NULL && sgot->_raw_size > 0) |
5b3b9ff6 ILT |
6703 | { |
6704 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
6705 | bfd_put_32 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 4); | |
6706 | } | |
6707 | ||
4da624dd ILT |
6708 | if (sgot != NULL) |
6709 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
5b3b9ff6 | 6710 | |
53787b23 ILT |
6711 | { |
6712 | asection *sdynsym; | |
6713 | asection *s; | |
6714 | unsigned int i; | |
6715 | bfd_vma last; | |
6716 | Elf_Internal_Sym sym; | |
6717 | long dindx; | |
6718 | const char *name; | |
6719 | const char * const * namep = mips_elf_dynsym_sec_names; | |
6720 | Elf32_compact_rel cpt; | |
6721 | ||
6722 | /* Set up the section symbols for the output sections. SGI sets | |
6723 | the STT_NOTYPE attribute for these symbols. Should we do so? */ | |
6724 | ||
6725 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
6726 | if (sdynsym != NULL) | |
6727 | { | |
6728 | if (SGI_COMPAT (output_bfd)) | |
6729 | { | |
6730 | sym.st_size = 0; | |
6731 | sym.st_name = 0; | |
6732 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
6733 | sym.st_other = 0; | |
5b3b9ff6 | 6734 | |
53787b23 ILT |
6735 | i = 0; |
6736 | while ((name = *namep++) != NULL) | |
6737 | { | |
6738 | s = bfd_get_section_by_name (output_bfd, name); | |
6739 | if (s != NULL) | |
6740 | { | |
6741 | sym.st_value = s->vma; | |
6742 | dindx = elf_section_data (s)->dynindx; | |
6743 | last = s->vma + s->_raw_size; | |
6744 | } | |
6745 | else | |
6746 | { | |
6747 | sym.st_value = last; | |
6748 | dindx++; | |
6749 | } | |
5b3b9ff6 | 6750 | |
53787b23 ILT |
6751 | sym.st_shndx = (i < MIPS_TEXT_DYNSYM_SECNO |
6752 | ? SHN_MIPS_TEXT | |
6753 | : SHN_MIPS_DATA); | |
6754 | ++i; | |
6755 | sym.st_name = | |
6756 | mips_elf_hash_table (info)->dynsym_sec_strindex[dindx]; | |
6757 | ||
6758 | bfd_elf32_swap_symbol_out (output_bfd, &sym, | |
6759 | (((Elf32_External_Sym *) | |
6760 | sdynsym->contents) | |
6761 | + dindx)); | |
6762 | } | |
5b3b9ff6 | 6763 | |
53787b23 ILT |
6764 | /* Set the sh_info field of the output .dynsym section to |
6765 | the index of the first global symbol. */ | |
6766 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
6767 | SIZEOF_MIPS_DYNSYM_SECNAMES; | |
6768 | } | |
6769 | else | |
6770 | { | |
6771 | sym.st_size = 0; | |
6772 | sym.st_name = 0; | |
6773 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6774 | sym.st_other = 0; | |
5b3b9ff6 | 6775 | |
53787b23 ILT |
6776 | for (s = output_bfd->sections; s != NULL; s = s->next) |
6777 | { | |
6778 | int indx; | |
5b3b9ff6 | 6779 | |
53787b23 | 6780 | sym.st_value = s->vma; |
5b3b9ff6 | 6781 | |
53787b23 ILT |
6782 | indx = elf_section_data (s)->this_idx; |
6783 | BFD_ASSERT (indx > 0); | |
6784 | sym.st_shndx = indx; | |
5b3b9ff6 | 6785 | |
53787b23 ILT |
6786 | bfd_elf32_swap_symbol_out (output_bfd, &sym, |
6787 | (((Elf32_External_Sym *) | |
6788 | sdynsym->contents) | |
6789 | + elf_section_data (s)->dynindx)); | |
6790 | } | |
5b3b9ff6 | 6791 | |
53787b23 ILT |
6792 | /* Set the sh_info field of the output .dynsym section to |
6793 | the index of the first global symbol. */ | |
6794 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
6795 | bfd_count_sections (output_bfd) + 1; | |
6796 | } | |
6797 | } | |
5b3b9ff6 | 6798 | |
53787b23 ILT |
6799 | if (SGI_COMPAT (output_bfd)) |
6800 | { | |
6801 | /* Write .compact_rel section out. */ | |
6802 | s = bfd_get_section_by_name (dynobj, ".compact_rel"); | |
6803 | if (s != NULL) | |
6804 | { | |
6805 | cpt.id1 = 1; | |
6806 | cpt.num = s->reloc_count; | |
6807 | cpt.id2 = 2; | |
6808 | cpt.offset = (s->output_section->filepos | |
6809 | + sizeof (Elf32_External_compact_rel)); | |
6810 | cpt.reserved0 = 0; | |
6811 | cpt.reserved1 = 0; | |
ff12f303 | 6812 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, |
53787b23 ILT |
6813 | ((Elf32_External_compact_rel *) |
6814 | s->contents)); | |
6815 | ||
6816 | /* Clean up a dummy stub function entry in .text. */ | |
6817 | s = bfd_get_section_by_name (dynobj, ".stub"); | |
6818 | if (s != NULL) | |
6819 | { | |
6820 | file_ptr dummy_offset; | |
5b3b9ff6 | 6821 | |
53787b23 ILT |
6822 | BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE); |
6823 | dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE; | |
6824 | memset (s->contents + dummy_offset, 0, | |
6825 | MIPS_FUNCTION_STUB_SIZE); | |
6826 | } | |
6827 | } | |
6828 | } | |
5b3b9ff6 | 6829 | |
53787b23 ILT |
6830 | /* Clean up a first relocation in .rel.dyn. */ |
6831 | s = bfd_get_section_by_name (dynobj, ".rel.dyn"); | |
4da624dd | 6832 | if (s != NULL && s->_raw_size > 0) |
53787b23 ILT |
6833 | memset (s->contents, 0, sizeof (Elf32_External_Rel)); |
6834 | } | |
5b3b9ff6 ILT |
6835 | |
6836 | return true; | |
6837 | } | |
6838 | \f | |
6839 | /* This is almost identical to bfd_generic_get_... except that some | |
6840 | MIPS relocations need to be handled specially. Sigh. */ | |
6841 | ||
6842 | static bfd_byte * | |
6843 | elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data, | |
6844 | relocateable, symbols) | |
6845 | bfd *abfd; | |
6846 | struct bfd_link_info *link_info; | |
6847 | struct bfd_link_order *link_order; | |
6848 | bfd_byte *data; | |
6849 | boolean relocateable; | |
6850 | asymbol **symbols; | |
6851 | { | |
6852 | /* Get enough memory to hold the stuff */ | |
6853 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
6854 | asection *input_section = link_order->u.indirect.section; | |
6855 | ||
6856 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
6857 | arelent **reloc_vector = NULL; | |
6858 | long reloc_count; | |
6859 | ||
6860 | if (reloc_size < 0) | |
6861 | goto error_return; | |
6862 | ||
6863 | reloc_vector = (arelent **) bfd_malloc (reloc_size); | |
6864 | if (reloc_vector == NULL && reloc_size != 0) | |
6865 | goto error_return; | |
6866 | ||
a16fcab3 KR |
6867 | /* read in the section */ |
6868 | if (!bfd_get_section_contents (input_bfd, | |
6869 | input_section, | |
6870 | (PTR) data, | |
6871 | 0, | |
6872 | input_section->_raw_size)) | |
6873 | goto error_return; | |
6874 | ||
6875 | /* We're not relaxing the section, so just copy the size info */ | |
6876 | input_section->_cooked_size = input_section->_raw_size; | |
6877 | input_section->reloc_done = true; | |
6878 | ||
6879 | reloc_count = bfd_canonicalize_reloc (input_bfd, | |
6880 | input_section, | |
6881 | reloc_vector, | |
6882 | symbols); | |
6883 | if (reloc_count < 0) | |
6884 | goto error_return; | |
6885 | ||
6886 | if (reloc_count > 0) | |
6887 | { | |
6888 | arelent **parent; | |
6889 | /* for mips */ | |
6890 | int gp_found; | |
ede4eed4 | 6891 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ |
a16fcab3 KR |
6892 | |
6893 | { | |
6894 | struct bfd_hash_entry *h; | |
6895 | struct bfd_link_hash_entry *lh; | |
6896 | /* Skip all this stuff if we aren't mixing formats. */ | |
6897 | if (abfd && input_bfd | |
6898 | && abfd->xvec == input_bfd->xvec) | |
6899 | lh = 0; | |
6900 | else | |
6901 | { | |
a2546fce | 6902 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false); |
a16fcab3 KR |
6903 | lh = (struct bfd_link_hash_entry *) h; |
6904 | } | |
6905 | lookup: | |
6906 | if (lh) | |
6907 | { | |
6908 | switch (lh->type) | |
6909 | { | |
6910 | case bfd_link_hash_undefined: | |
6911 | case bfd_link_hash_undefweak: | |
6912 | case bfd_link_hash_common: | |
6913 | gp_found = 0; | |
6914 | break; | |
6915 | case bfd_link_hash_defined: | |
6916 | case bfd_link_hash_defweak: | |
6917 | gp_found = 1; | |
6918 | gp = lh->u.def.value; | |
6919 | break; | |
6920 | case bfd_link_hash_indirect: | |
6921 | case bfd_link_hash_warning: | |
6922 | lh = lh->u.i.link; | |
6923 | /* @@FIXME ignoring warning for now */ | |
6924 | goto lookup; | |
6925 | case bfd_link_hash_new: | |
6926 | default: | |
6927 | abort (); | |
6928 | } | |
6929 | } | |
6930 | else | |
6931 | gp_found = 0; | |
6932 | } | |
6933 | /* end mips */ | |
6934 | for (parent = reloc_vector; *parent != (arelent *) NULL; | |
6935 | parent++) | |
6936 | { | |
6937 | char *error_message = (char *) NULL; | |
6938 | bfd_reloc_status_type r; | |
6939 | ||
6940 | /* Specific to MIPS: Deal with relocation types that require | |
6941 | knowing the gp of the output bfd. */ | |
6942 | asymbol *sym = *(*parent)->sym_ptr_ptr; | |
6943 | if (bfd_is_abs_section (sym->section) && abfd) | |
6944 | { | |
6945 | /* The special_function wouldn't get called anyways. */ | |
6946 | } | |
6947 | else if (!gp_found) | |
6948 | { | |
6949 | /* The gp isn't there; let the special function code | |
6950 | fall over on its own. */ | |
6951 | } | |
5b3b9ff6 | 6952 | else if ((*parent)->howto->special_function |
bc05732b | 6953 | == _bfd_mips_elf_gprel16_reloc) |
a16fcab3 KR |
6954 | { |
6955 | /* bypass special_function call */ | |
6956 | r = gprel16_with_gp (input_bfd, sym, *parent, input_section, | |
6957 | relocateable, (PTR) data, gp); | |
6958 | goto skip_bfd_perform_relocation; | |
6959 | } | |
6960 | /* end mips specific stuff */ | |
6961 | ||
6962 | r = bfd_perform_relocation (input_bfd, | |
6963 | *parent, | |
6964 | (PTR) data, | |
6965 | input_section, | |
6966 | relocateable ? abfd : (bfd *) NULL, | |
6967 | &error_message); | |
6968 | skip_bfd_perform_relocation: | |
6969 | ||
6970 | if (relocateable) | |
6971 | { | |
6972 | asection *os = input_section->output_section; | |
6973 | ||
6974 | /* A partial link, so keep the relocs */ | |
6975 | os->orelocation[os->reloc_count] = *parent; | |
6976 | os->reloc_count++; | |
6977 | } | |
6978 | ||
6979 | if (r != bfd_reloc_ok) | |
6980 | { | |
6981 | switch (r) | |
6982 | { | |
6983 | case bfd_reloc_undefined: | |
6984 | if (!((*link_info->callbacks->undefined_symbol) | |
6985 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
6986 | input_bfd, input_section, (*parent)->address))) | |
6987 | goto error_return; | |
6988 | break; | |
6989 | case bfd_reloc_dangerous: | |
6990 | BFD_ASSERT (error_message != (char *) NULL); | |
6991 | if (!((*link_info->callbacks->reloc_dangerous) | |
6992 | (link_info, error_message, input_bfd, input_section, | |
6993 | (*parent)->address))) | |
6994 | goto error_return; | |
6995 | break; | |
6996 | case bfd_reloc_overflow: | |
6997 | if (!((*link_info->callbacks->reloc_overflow) | |
6998 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
6999 | (*parent)->howto->name, (*parent)->addend, | |
7000 | input_bfd, input_section, (*parent)->address))) | |
7001 | goto error_return; | |
7002 | break; | |
7003 | case bfd_reloc_outofrange: | |
7004 | default: | |
7005 | abort (); | |
7006 | break; | |
7007 | } | |
7008 | ||
7009 | } | |
7010 | } | |
7011 | } | |
7012 | if (reloc_vector != NULL) | |
7013 | free (reloc_vector); | |
7014 | return data; | |
7015 | ||
7016 | error_return: | |
7017 | if (reloc_vector != NULL) | |
7018 | free (reloc_vector); | |
7019 | return NULL; | |
7020 | } | |
5b3b9ff6 ILT |
7021 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
7022 | elf32_mips_get_relocated_section_contents | |
a16fcab3 | 7023 | \f |
6e07e54f ILT |
7024 | /* ECOFF swapping routines. These are used when dealing with the |
7025 | .mdebug section, which is in the ECOFF debugging format. */ | |
00176555 | 7026 | static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = |
6e07e54f ILT |
7027 | { |
7028 | /* Symbol table magic number. */ | |
7029 | magicSym, | |
7030 | /* Alignment of debugging information. E.g., 4. */ | |
7031 | 4, | |
7032 | /* Sizes of external symbolic information. */ | |
7033 | sizeof (struct hdr_ext), | |
7034 | sizeof (struct dnr_ext), | |
7035 | sizeof (struct pdr_ext), | |
7036 | sizeof (struct sym_ext), | |
7037 | sizeof (struct opt_ext), | |
7038 | sizeof (struct fdr_ext), | |
7039 | sizeof (struct rfd_ext), | |
7040 | sizeof (struct ext_ext), | |
7041 | /* Functions to swap in external symbolic data. */ | |
7042 | ecoff_swap_hdr_in, | |
7043 | ecoff_swap_dnr_in, | |
7044 | ecoff_swap_pdr_in, | |
7045 | ecoff_swap_sym_in, | |
7046 | ecoff_swap_opt_in, | |
7047 | ecoff_swap_fdr_in, | |
7048 | ecoff_swap_rfd_in, | |
7049 | ecoff_swap_ext_in, | |
75f3ef7a ILT |
7050 | _bfd_ecoff_swap_tir_in, |
7051 | _bfd_ecoff_swap_rndx_in, | |
6e07e54f ILT |
7052 | /* Functions to swap out external symbolic data. */ |
7053 | ecoff_swap_hdr_out, | |
7054 | ecoff_swap_dnr_out, | |
7055 | ecoff_swap_pdr_out, | |
7056 | ecoff_swap_sym_out, | |
7057 | ecoff_swap_opt_out, | |
7058 | ecoff_swap_fdr_out, | |
7059 | ecoff_swap_rfd_out, | |
aac6b32f | 7060 | ecoff_swap_ext_out, |
75f3ef7a ILT |
7061 | _bfd_ecoff_swap_tir_out, |
7062 | _bfd_ecoff_swap_rndx_out, | |
aac6b32f | 7063 | /* Function to read in symbolic data. */ |
00176555 | 7064 | _bfd_mips_elf_read_ecoff_info |
6e07e54f ILT |
7065 | }; |
7066 | \f | |
6b4b4d17 JK |
7067 | #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec |
7068 | #define TARGET_LITTLE_NAME "elf32-littlemips" | |
7069 | #define TARGET_BIG_SYM bfd_elf32_bigmips_vec | |
7070 | #define TARGET_BIG_NAME "elf32-bigmips" | |
7071 | #define ELF_ARCH bfd_arch_mips | |
6e07e54f | 7072 | #define ELF_MACHINE_CODE EM_MIPS |
9b292d4c ILT |
7073 | |
7074 | /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses | |
7075 | a value of 0x1000, and we are compatible. */ | |
7076 | #define ELF_MAXPAGESIZE 0x1000 | |
7077 | ||
497c5434 | 7078 | #define elf_backend_collect true |
5b3b9ff6 | 7079 | #define elf_backend_type_change_ok true |
b3c0fc57 ILT |
7080 | #define elf_info_to_howto 0 |
7081 | #define elf_info_to_howto_rel mips_info_to_howto_rel | |
6e07e54f | 7082 | #define elf_backend_sym_is_global mips_elf_sym_is_global |
00176555 | 7083 | #define elf_backend_object_p mips_elf32_object_p |
d1bf45aa | 7084 | #define elf_backend_section_from_shdr mips_elf32_section_from_shdr |
00176555 | 7085 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
b3c0fc57 | 7086 | #define elf_backend_section_from_bfd_section \ |
00176555 ILT |
7087 | _bfd_mips_elf_section_from_bfd_section |
7088 | #define elf_backend_section_processing mips_elf32_section_processing | |
7089 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing | |
5b3b9ff6 ILT |
7090 | #define elf_backend_additional_program_headers \ |
7091 | mips_elf_additional_program_headers | |
7092 | #define elf_backend_modify_segment_map mips_elf_modify_segment_map | |
6e07e54f | 7093 | #define elf_backend_final_write_processing \ |
00176555 ILT |
7094 | _bfd_mips_elf_final_write_processing |
7095 | #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap | |
b3c0fc57 | 7096 | |
a2546fce | 7097 | #define bfd_elf32_bfd_is_local_label mips_elf_is_local_label |
bc05732b ILT |
7098 | #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line |
7099 | #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents | |
aac6b32f ILT |
7100 | #define bfd_elf32_bfd_link_hash_table_create \ |
7101 | mips_elf_link_hash_table_create | |
6e07e54f | 7102 | #define bfd_elf32_bfd_final_link mips_elf_final_link |
5b3b9ff6 | 7103 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
bc05732b | 7104 | _bfd_mips_elf_copy_private_bfd_data |
5b3b9ff6 | 7105 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
bc05732b ILT |
7106 | _bfd_mips_elf_merge_private_bfd_data |
7107 | #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags | |
aac6b32f | 7108 | #define elf_backend_add_symbol_hook mips_elf_add_symbol_hook |
5b3b9ff6 ILT |
7109 | #define elf_backend_create_dynamic_sections \ |
7110 | mips_elf_create_dynamic_sections | |
7111 | #define elf_backend_check_relocs mips_elf_check_relocs | |
7112 | #define elf_backend_adjust_dynamic_symbol \ | |
7113 | mips_elf_adjust_dynamic_symbol | |
e900e695 ILT |
7114 | #define elf_backend_always_size_sections \ |
7115 | mips_elf_always_size_sections | |
5b3b9ff6 ILT |
7116 | #define elf_backend_size_dynamic_sections \ |
7117 | mips_elf_size_dynamic_sections | |
7118 | #define elf_backend_relocate_section mips_elf_relocate_section | |
e4f4813f ILT |
7119 | #define elf_backend_link_output_symbol_hook \ |
7120 | mips_elf_link_output_symbol_hook | |
5b3b9ff6 ILT |
7121 | #define elf_backend_finish_dynamic_symbol \ |
7122 | mips_elf_finish_dynamic_symbol | |
7123 | #define elf_backend_finish_dynamic_sections \ | |
7124 | mips_elf_finish_dynamic_sections | |
6b4b4d17 JK |
7125 | |
7126 | #include "elf32-target.h" |