Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* BFD back-end for ALPHA Extended-Coff files. |
72adc230 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
0aabe54e | 3 | 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 |
4f608e79 | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | Modified from coff-mips.c by Steve Chamberlain <sac@cygnus.com> and |
6 | Ian Lance Taylor <ian@cygnus.com>. | |
7 | ||
cd123cb7 | 8 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 9 | |
cd123cb7 NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 3 of the License, or | |
13 | (at your option) any later version. | |
252b5132 | 14 | |
cd123cb7 NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
252b5132 | 19 | |
cd123cb7 NC |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
23 | MA 02110-1301, USA. */ | |
252b5132 | 24 | |
252b5132 | 25 | #include "sysdep.h" |
3db64b00 | 26 | #include "bfd.h" |
252b5132 RH |
27 | #include "bfdlink.h" |
28 | #include "libbfd.h" | |
29 | #include "coff/internal.h" | |
30 | #include "coff/sym.h" | |
31 | #include "coff/symconst.h" | |
32 | #include "coff/ecoff.h" | |
33 | #include "coff/alpha.h" | |
34 | #include "aout/ar.h" | |
35 | #include "libcoff.h" | |
36 | #include "libecoff.h" | |
37 | \f | |
38 | /* Prototypes for static functions. */ | |
39 | ||
b34976b6 AM |
40 | static const bfd_target *alpha_ecoff_object_p |
41 | PARAMS ((bfd *)); | |
42 | static bfd_boolean alpha_ecoff_bad_format_hook | |
43 | PARAMS ((bfd *abfd, PTR filehdr)); | |
44 | static PTR alpha_ecoff_mkobject_hook | |
45 | PARAMS ((bfd *, PTR filehdr, PTR aouthdr)); | |
46 | static void alpha_ecoff_swap_reloc_in | |
47 | PARAMS ((bfd *, PTR, struct internal_reloc *)); | |
48 | static void alpha_ecoff_swap_reloc_out | |
49 | PARAMS ((bfd *, const struct internal_reloc *, PTR)); | |
50 | static void alpha_adjust_reloc_in | |
51 | PARAMS ((bfd *, const struct internal_reloc *, arelent *)); | |
52 | static void alpha_adjust_reloc_out | |
53 | PARAMS ((bfd *, const arelent *, struct internal_reloc *)); | |
252b5132 | 54 | static reloc_howto_type *alpha_bfd_reloc_type_lookup |
b34976b6 | 55 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
252b5132 RH |
56 | static bfd_byte *alpha_ecoff_get_relocated_section_contents |
57 | PARAMS ((bfd *abfd, struct bfd_link_info *, struct bfd_link_order *, | |
1049f94e | 58 | bfd_byte *data, bfd_boolean relocatable, asymbol **symbols)); |
252b5132 RH |
59 | static bfd_vma alpha_convert_external_reloc |
60 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, struct external_reloc *, | |
61 | struct ecoff_link_hash_entry *)); | |
b34976b6 AM |
62 | static bfd_boolean alpha_relocate_section |
63 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, PTR)); | |
64 | static bfd_boolean alpha_adjust_headers | |
252b5132 | 65 | PARAMS ((bfd *, struct internal_filehdr *, struct internal_aouthdr *)); |
b34976b6 AM |
66 | static PTR alpha_ecoff_read_ar_hdr |
67 | PARAMS ((bfd *)); | |
68 | static bfd *alpha_ecoff_get_elt_at_filepos | |
69 | PARAMS ((bfd *, file_ptr)); | |
70 | static bfd *alpha_ecoff_openr_next_archived_file | |
71 | PARAMS ((bfd *, bfd *)); | |
72 | static bfd *alpha_ecoff_get_elt_at_index | |
73 | PARAMS ((bfd *, symindex)); | |
252b5132 RH |
74 | \f |
75 | /* ECOFF has COFF sections, but the debugging information is stored in | |
76 | a completely different format. ECOFF targets use some of the | |
77 | swapping routines from coffswap.h, and some of the generic COFF | |
78 | routines in coffgen.c, but, unlike the real COFF targets, do not | |
79 | use coffcode.h itself. | |
80 | ||
81 | Get the generic COFF swapping routines, except for the reloc, | |
82 | symbol, and lineno ones. Give them ecoff names. Define some | |
83 | accessor macros for the large sizes used for Alpha ECOFF. */ | |
84 | ||
dc810e39 AM |
85 | #define GET_FILEHDR_SYMPTR H_GET_64 |
86 | #define PUT_FILEHDR_SYMPTR H_PUT_64 | |
87 | #define GET_AOUTHDR_TSIZE H_GET_64 | |
88 | #define PUT_AOUTHDR_TSIZE H_PUT_64 | |
89 | #define GET_AOUTHDR_DSIZE H_GET_64 | |
90 | #define PUT_AOUTHDR_DSIZE H_PUT_64 | |
91 | #define GET_AOUTHDR_BSIZE H_GET_64 | |
92 | #define PUT_AOUTHDR_BSIZE H_PUT_64 | |
93 | #define GET_AOUTHDR_ENTRY H_GET_64 | |
94 | #define PUT_AOUTHDR_ENTRY H_PUT_64 | |
95 | #define GET_AOUTHDR_TEXT_START H_GET_64 | |
96 | #define PUT_AOUTHDR_TEXT_START H_PUT_64 | |
97 | #define GET_AOUTHDR_DATA_START H_GET_64 | |
98 | #define PUT_AOUTHDR_DATA_START H_PUT_64 | |
99 | #define GET_SCNHDR_PADDR H_GET_64 | |
100 | #define PUT_SCNHDR_PADDR H_PUT_64 | |
101 | #define GET_SCNHDR_VADDR H_GET_64 | |
102 | #define PUT_SCNHDR_VADDR H_PUT_64 | |
103 | #define GET_SCNHDR_SIZE H_GET_64 | |
104 | #define PUT_SCNHDR_SIZE H_PUT_64 | |
105 | #define GET_SCNHDR_SCNPTR H_GET_64 | |
106 | #define PUT_SCNHDR_SCNPTR H_PUT_64 | |
107 | #define GET_SCNHDR_RELPTR H_GET_64 | |
108 | #define PUT_SCNHDR_RELPTR H_PUT_64 | |
109 | #define GET_SCNHDR_LNNOPTR H_GET_64 | |
110 | #define PUT_SCNHDR_LNNOPTR H_PUT_64 | |
252b5132 RH |
111 | |
112 | #define ALPHAECOFF | |
113 | ||
114 | #define NO_COFF_RELOCS | |
115 | #define NO_COFF_SYMBOLS | |
116 | #define NO_COFF_LINENOS | |
117 | #define coff_swap_filehdr_in alpha_ecoff_swap_filehdr_in | |
118 | #define coff_swap_filehdr_out alpha_ecoff_swap_filehdr_out | |
119 | #define coff_swap_aouthdr_in alpha_ecoff_swap_aouthdr_in | |
120 | #define coff_swap_aouthdr_out alpha_ecoff_swap_aouthdr_out | |
121 | #define coff_swap_scnhdr_in alpha_ecoff_swap_scnhdr_in | |
122 | #define coff_swap_scnhdr_out alpha_ecoff_swap_scnhdr_out | |
123 | #include "coffswap.h" | |
124 | ||
125 | /* Get the ECOFF swapping routines. */ | |
126 | #define ECOFF_64 | |
127 | #include "ecoffswap.h" | |
128 | \f | |
129 | /* How to process the various reloc types. */ | |
130 | ||
b34976b6 AM |
131 | static bfd_reloc_status_type reloc_nil |
132 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 RH |
133 | |
134 | static bfd_reloc_status_type | |
135 | reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
b2747490 AJ |
136 | bfd *abfd ATTRIBUTE_UNUSED; |
137 | arelent *reloc ATTRIBUTE_UNUSED; | |
138 | asymbol *sym ATTRIBUTE_UNUSED; | |
139 | PTR data ATTRIBUTE_UNUSED; | |
140 | asection *sec ATTRIBUTE_UNUSED; | |
141 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
142 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
143 | { |
144 | return bfd_reloc_ok; | |
145 | } | |
146 | ||
147 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
148 | from smaller values. Start with zero, widen, *then* decrement. */ | |
149 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
150 | ||
151 | static reloc_howto_type alpha_howto_table[] = | |
152 | { | |
153 | /* Reloc type 0 is ignored by itself. However, it appears after a | |
154 | GPDISP reloc to identify the location where the low order 16 bits | |
155 | of the gp register are loaded. */ | |
156 | HOWTO (ALPHA_R_IGNORE, /* type */ | |
157 | 0, /* rightshift */ | |
158 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
159 | 8, /* bitsize */ | |
b34976b6 | 160 | TRUE, /* pc_relative */ |
252b5132 RH |
161 | 0, /* bitpos */ |
162 | complain_overflow_dont, /* complain_on_overflow */ | |
163 | reloc_nil, /* special_function */ | |
164 | "IGNORE", /* name */ | |
b34976b6 | 165 | TRUE, /* partial_inplace */ |
252b5132 RH |
166 | 0, /* src_mask */ |
167 | 0, /* dst_mask */ | |
b34976b6 | 168 | TRUE), /* pcrel_offset */ |
252b5132 RH |
169 | |
170 | /* A 32 bit reference to a symbol. */ | |
171 | HOWTO (ALPHA_R_REFLONG, /* type */ | |
172 | 0, /* rightshift */ | |
173 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
174 | 32, /* bitsize */ | |
b34976b6 | 175 | FALSE, /* pc_relative */ |
252b5132 RH |
176 | 0, /* bitpos */ |
177 | complain_overflow_bitfield, /* complain_on_overflow */ | |
178 | 0, /* special_function */ | |
179 | "REFLONG", /* name */ | |
b34976b6 | 180 | TRUE, /* partial_inplace */ |
252b5132 RH |
181 | 0xffffffff, /* src_mask */ |
182 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 183 | FALSE), /* pcrel_offset */ |
252b5132 RH |
184 | |
185 | /* A 64 bit reference to a symbol. */ | |
186 | HOWTO (ALPHA_R_REFQUAD, /* type */ | |
187 | 0, /* rightshift */ | |
188 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
189 | 64, /* bitsize */ | |
b34976b6 | 190 | FALSE, /* pc_relative */ |
252b5132 RH |
191 | 0, /* bitpos */ |
192 | complain_overflow_bitfield, /* complain_on_overflow */ | |
193 | 0, /* special_function */ | |
194 | "REFQUAD", /* name */ | |
b34976b6 | 195 | TRUE, /* partial_inplace */ |
252b5132 RH |
196 | MINUS_ONE, /* src_mask */ |
197 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 198 | FALSE), /* pcrel_offset */ |
252b5132 RH |
199 | |
200 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
201 | that when the value is used the value of the gp register will be | |
202 | added in. */ | |
203 | HOWTO (ALPHA_R_GPREL32, /* type */ | |
204 | 0, /* rightshift */ | |
205 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
206 | 32, /* bitsize */ | |
b34976b6 | 207 | FALSE, /* pc_relative */ |
252b5132 RH |
208 | 0, /* bitpos */ |
209 | complain_overflow_bitfield, /* complain_on_overflow */ | |
210 | 0, /* special_function */ | |
211 | "GPREL32", /* name */ | |
b34976b6 | 212 | TRUE, /* partial_inplace */ |
252b5132 RH |
213 | 0xffffffff, /* src_mask */ |
214 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 215 | FALSE), /* pcrel_offset */ |
252b5132 RH |
216 | |
217 | /* Used for an instruction that refers to memory off the GP | |
218 | register. The offset is 16 bits of the 32 bit instruction. This | |
219 | reloc always seems to be against the .lita section. */ | |
220 | HOWTO (ALPHA_R_LITERAL, /* type */ | |
221 | 0, /* rightshift */ | |
222 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
223 | 16, /* bitsize */ | |
b34976b6 | 224 | FALSE, /* pc_relative */ |
252b5132 RH |
225 | 0, /* bitpos */ |
226 | complain_overflow_signed, /* complain_on_overflow */ | |
227 | 0, /* special_function */ | |
228 | "LITERAL", /* name */ | |
b34976b6 | 229 | TRUE, /* partial_inplace */ |
252b5132 RH |
230 | 0xffff, /* src_mask */ |
231 | 0xffff, /* dst_mask */ | |
b34976b6 | 232 | FALSE), /* pcrel_offset */ |
252b5132 RH |
233 | |
234 | /* This reloc only appears immediately following a LITERAL reloc. | |
235 | It identifies a use of the literal. It seems that the linker can | |
236 | use this to eliminate a portion of the .lita section. The symbol | |
237 | index is special: 1 means the literal address is in the base | |
238 | register of a memory format instruction; 2 means the literal | |
239 | address is in the byte offset register of a byte-manipulation | |
240 | instruction; 3 means the literal address is in the target | |
241 | register of a jsr instruction. This does not actually do any | |
242 | relocation. */ | |
243 | HOWTO (ALPHA_R_LITUSE, /* type */ | |
244 | 0, /* rightshift */ | |
245 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
246 | 32, /* bitsize */ | |
b34976b6 | 247 | FALSE, /* pc_relative */ |
252b5132 RH |
248 | 0, /* bitpos */ |
249 | complain_overflow_dont, /* complain_on_overflow */ | |
250 | reloc_nil, /* special_function */ | |
251 | "LITUSE", /* name */ | |
b34976b6 | 252 | FALSE, /* partial_inplace */ |
252b5132 RH |
253 | 0, /* src_mask */ |
254 | 0, /* dst_mask */ | |
b34976b6 | 255 | FALSE), /* pcrel_offset */ |
252b5132 RH |
256 | |
257 | /* Load the gp register. This is always used for a ldah instruction | |
258 | which loads the upper 16 bits of the gp register. The next reloc | |
259 | will be an IGNORE reloc which identifies the location of the lda | |
260 | instruction which loads the lower 16 bits. The symbol index of | |
261 | the GPDISP instruction appears to actually be the number of bytes | |
262 | between the ldah and lda instructions. This gives two different | |
263 | ways to determine where the lda instruction is; I don't know why | |
264 | both are used. The value to use for the relocation is the | |
265 | difference between the GP value and the current location; the | |
266 | load will always be done against a register holding the current | |
267 | address. */ | |
268 | HOWTO (ALPHA_R_GPDISP, /* type */ | |
269 | 16, /* rightshift */ | |
270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
271 | 16, /* bitsize */ | |
b34976b6 | 272 | TRUE, /* pc_relative */ |
252b5132 RH |
273 | 0, /* bitpos */ |
274 | complain_overflow_dont, /* complain_on_overflow */ | |
275 | reloc_nil, /* special_function */ | |
276 | "GPDISP", /* name */ | |
b34976b6 | 277 | TRUE, /* partial_inplace */ |
252b5132 RH |
278 | 0xffff, /* src_mask */ |
279 | 0xffff, /* dst_mask */ | |
b34976b6 | 280 | TRUE), /* pcrel_offset */ |
252b5132 RH |
281 | |
282 | /* A 21 bit branch. The native assembler generates these for | |
283 | branches within the text segment, and also fills in the PC | |
284 | relative offset in the instruction. */ | |
285 | HOWTO (ALPHA_R_BRADDR, /* type */ | |
286 | 2, /* rightshift */ | |
287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 21, /* bitsize */ | |
b34976b6 | 289 | TRUE, /* pc_relative */ |
252b5132 RH |
290 | 0, /* bitpos */ |
291 | complain_overflow_signed, /* complain_on_overflow */ | |
292 | 0, /* special_function */ | |
293 | "BRADDR", /* name */ | |
b34976b6 | 294 | TRUE, /* partial_inplace */ |
252b5132 RH |
295 | 0x1fffff, /* src_mask */ |
296 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 297 | FALSE), /* pcrel_offset */ |
252b5132 RH |
298 | |
299 | /* A hint for a jump to a register. */ | |
300 | HOWTO (ALPHA_R_HINT, /* type */ | |
301 | 2, /* rightshift */ | |
302 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
303 | 14, /* bitsize */ | |
b34976b6 | 304 | TRUE, /* pc_relative */ |
252b5132 RH |
305 | 0, /* bitpos */ |
306 | complain_overflow_dont, /* complain_on_overflow */ | |
307 | 0, /* special_function */ | |
308 | "HINT", /* name */ | |
b34976b6 | 309 | TRUE, /* partial_inplace */ |
252b5132 RH |
310 | 0x3fff, /* src_mask */ |
311 | 0x3fff, /* dst_mask */ | |
b34976b6 | 312 | FALSE), /* pcrel_offset */ |
252b5132 RH |
313 | |
314 | /* 16 bit PC relative offset. */ | |
315 | HOWTO (ALPHA_R_SREL16, /* type */ | |
316 | 0, /* rightshift */ | |
317 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
318 | 16, /* bitsize */ | |
b34976b6 | 319 | TRUE, /* pc_relative */ |
252b5132 RH |
320 | 0, /* bitpos */ |
321 | complain_overflow_signed, /* complain_on_overflow */ | |
322 | 0, /* special_function */ | |
323 | "SREL16", /* name */ | |
b34976b6 | 324 | TRUE, /* partial_inplace */ |
252b5132 RH |
325 | 0xffff, /* src_mask */ |
326 | 0xffff, /* dst_mask */ | |
b34976b6 | 327 | FALSE), /* pcrel_offset */ |
252b5132 RH |
328 | |
329 | /* 32 bit PC relative offset. */ | |
330 | HOWTO (ALPHA_R_SREL32, /* type */ | |
331 | 0, /* rightshift */ | |
332 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
333 | 32, /* bitsize */ | |
b34976b6 | 334 | TRUE, /* pc_relative */ |
252b5132 RH |
335 | 0, /* bitpos */ |
336 | complain_overflow_signed, /* complain_on_overflow */ | |
337 | 0, /* special_function */ | |
338 | "SREL32", /* name */ | |
b34976b6 | 339 | TRUE, /* partial_inplace */ |
252b5132 RH |
340 | 0xffffffff, /* src_mask */ |
341 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 342 | FALSE), /* pcrel_offset */ |
252b5132 RH |
343 | |
344 | /* A 64 bit PC relative offset. */ | |
345 | HOWTO (ALPHA_R_SREL64, /* type */ | |
346 | 0, /* rightshift */ | |
347 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
348 | 64, /* bitsize */ | |
b34976b6 | 349 | TRUE, /* pc_relative */ |
252b5132 RH |
350 | 0, /* bitpos */ |
351 | complain_overflow_signed, /* complain_on_overflow */ | |
352 | 0, /* special_function */ | |
353 | "SREL64", /* name */ | |
b34976b6 | 354 | TRUE, /* partial_inplace */ |
252b5132 RH |
355 | MINUS_ONE, /* src_mask */ |
356 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 357 | FALSE), /* pcrel_offset */ |
252b5132 RH |
358 | |
359 | /* Push a value on the reloc evaluation stack. */ | |
360 | HOWTO (ALPHA_R_OP_PUSH, /* type */ | |
361 | 0, /* rightshift */ | |
362 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
363 | 0, /* bitsize */ | |
b34976b6 | 364 | FALSE, /* pc_relative */ |
252b5132 RH |
365 | 0, /* bitpos */ |
366 | complain_overflow_dont, /* complain_on_overflow */ | |
367 | 0, /* special_function */ | |
368 | "OP_PUSH", /* name */ | |
b34976b6 | 369 | FALSE, /* partial_inplace */ |
252b5132 RH |
370 | 0, /* src_mask */ |
371 | 0, /* dst_mask */ | |
b34976b6 | 372 | FALSE), /* pcrel_offset */ |
252b5132 RH |
373 | |
374 | /* Store the value from the stack at the given address. Store it in | |
375 | a bitfield of size r_size starting at bit position r_offset. */ | |
376 | HOWTO (ALPHA_R_OP_STORE, /* type */ | |
377 | 0, /* rightshift */ | |
378 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
379 | 64, /* bitsize */ | |
b34976b6 | 380 | FALSE, /* pc_relative */ |
252b5132 RH |
381 | 0, /* bitpos */ |
382 | complain_overflow_dont, /* complain_on_overflow */ | |
383 | 0, /* special_function */ | |
384 | "OP_STORE", /* name */ | |
b34976b6 | 385 | FALSE, /* partial_inplace */ |
252b5132 RH |
386 | 0, /* src_mask */ |
387 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 388 | FALSE), /* pcrel_offset */ |
252b5132 RH |
389 | |
390 | /* Subtract the reloc address from the value on the top of the | |
391 | relocation stack. */ | |
392 | HOWTO (ALPHA_R_OP_PSUB, /* type */ | |
393 | 0, /* rightshift */ | |
394 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
395 | 0, /* bitsize */ | |
b34976b6 | 396 | FALSE, /* pc_relative */ |
252b5132 RH |
397 | 0, /* bitpos */ |
398 | complain_overflow_dont, /* complain_on_overflow */ | |
399 | 0, /* special_function */ | |
400 | "OP_PSUB", /* name */ | |
b34976b6 | 401 | FALSE, /* partial_inplace */ |
252b5132 RH |
402 | 0, /* src_mask */ |
403 | 0, /* dst_mask */ | |
b34976b6 | 404 | FALSE), /* pcrel_offset */ |
252b5132 RH |
405 | |
406 | /* Shift the value on the top of the relocation stack right by the | |
407 | given value. */ | |
408 | HOWTO (ALPHA_R_OP_PRSHIFT, /* type */ | |
409 | 0, /* rightshift */ | |
410 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
411 | 0, /* bitsize */ | |
b34976b6 | 412 | FALSE, /* pc_relative */ |
252b5132 RH |
413 | 0, /* bitpos */ |
414 | complain_overflow_dont, /* complain_on_overflow */ | |
415 | 0, /* special_function */ | |
416 | "OP_PRSHIFT", /* name */ | |
b34976b6 | 417 | FALSE, /* partial_inplace */ |
252b5132 RH |
418 | 0, /* src_mask */ |
419 | 0, /* dst_mask */ | |
b34976b6 | 420 | FALSE), /* pcrel_offset */ |
252b5132 RH |
421 | |
422 | /* Adjust the GP value for a new range in the object file. */ | |
423 | HOWTO (ALPHA_R_GPVALUE, /* type */ | |
424 | 0, /* rightshift */ | |
425 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
426 | 0, /* bitsize */ | |
b34976b6 | 427 | FALSE, /* pc_relative */ |
252b5132 RH |
428 | 0, /* bitpos */ |
429 | complain_overflow_dont, /* complain_on_overflow */ | |
430 | 0, /* special_function */ | |
431 | "GPVALUE", /* name */ | |
b34976b6 | 432 | FALSE, /* partial_inplace */ |
252b5132 RH |
433 | 0, /* src_mask */ |
434 | 0, /* dst_mask */ | |
b34976b6 | 435 | FALSE) /* pcrel_offset */ |
252b5132 RH |
436 | }; |
437 | \f | |
438 | /* Recognize an Alpha ECOFF file. */ | |
439 | ||
440 | static const bfd_target * | |
441 | alpha_ecoff_object_p (abfd) | |
442 | bfd *abfd; | |
443 | { | |
444 | static const bfd_target *ret; | |
445 | ||
446 | ret = coff_object_p (abfd); | |
447 | ||
448 | if (ret != NULL) | |
449 | { | |
450 | asection *sec; | |
451 | ||
452 | /* Alpha ECOFF has a .pdata section. The lnnoptr field of the | |
453 | .pdata section is the number of entries it contains. Each | |
454 | entry takes up 8 bytes. The number of entries is required | |
455 | since the section is aligned to a 16 byte boundary. When we | |
456 | link .pdata sections together, we do not want to include the | |
457 | alignment bytes. We handle this on input by faking the size | |
458 | of the .pdata section to remove the unwanted alignment bytes. | |
459 | On output we will set the lnnoptr field and force the | |
460 | alignment. */ | |
461 | sec = bfd_get_section_by_name (abfd, _PDATA); | |
462 | if (sec != (asection *) NULL) | |
463 | { | |
464 | bfd_size_type size; | |
465 | ||
466 | size = sec->line_filepos * 8; | |
eea6121a AM |
467 | BFD_ASSERT (size == sec->size |
468 | || size + 8 == sec->size); | |
252b5132 RH |
469 | if (! bfd_set_section_size (abfd, sec, size)) |
470 | return NULL; | |
471 | } | |
472 | } | |
473 | ||
474 | return ret; | |
475 | } | |
476 | ||
477 | /* See whether the magic number matches. */ | |
478 | ||
b34976b6 | 479 | static bfd_boolean |
252b5132 | 480 | alpha_ecoff_bad_format_hook (abfd, filehdr) |
b2747490 | 481 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
482 | PTR filehdr; |
483 | { | |
484 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; | |
485 | ||
15ac1d4f NC |
486 | if (! ALPHA_ECOFF_BADMAG (*internal_f)) |
487 | return TRUE; | |
252b5132 | 488 | |
15ac1d4f NC |
489 | if (ALPHA_ECOFF_COMPRESSEDMAG (*internal_f)) |
490 | (*_bfd_error_handler) | |
491 | (_("%B: Cannot handle compressed Alpha binaries.\n" | |
492 | " Use compiler flags, or objZ, to generate uncompressed binaries."), | |
493 | abfd); | |
494 | ||
495 | return FALSE; | |
252b5132 RH |
496 | } |
497 | ||
498 | /* This is a hook called by coff_real_object_p to create any backend | |
499 | specific information. */ | |
500 | ||
501 | static PTR | |
502 | alpha_ecoff_mkobject_hook (abfd, filehdr, aouthdr) | |
503 | bfd *abfd; | |
504 | PTR filehdr; | |
505 | PTR aouthdr; | |
506 | { | |
507 | PTR ecoff; | |
508 | ||
509 | ecoff = _bfd_ecoff_mkobject_hook (abfd, filehdr, aouthdr); | |
510 | ||
511 | if (ecoff != NULL) | |
512 | { | |
513 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; | |
514 | ||
515 | /* Set additional BFD flags according to the object type from the | |
516 | machine specific file header flags. */ | |
517 | switch (internal_f->f_flags & F_ALPHA_OBJECT_TYPE_MASK) | |
518 | { | |
519 | case F_ALPHA_SHARABLE: | |
520 | abfd->flags |= DYNAMIC; | |
521 | break; | |
522 | case F_ALPHA_CALL_SHARED: | |
523 | /* Always executable if using shared libraries as the run time | |
524 | loader might resolve undefined references. */ | |
525 | abfd->flags |= (DYNAMIC | EXEC_P); | |
526 | break; | |
527 | } | |
528 | } | |
529 | return ecoff; | |
530 | } | |
531 | \f | |
532 | /* Reloc handling. */ | |
533 | ||
534 | /* Swap a reloc in. */ | |
535 | ||
536 | static void | |
537 | alpha_ecoff_swap_reloc_in (abfd, ext_ptr, intern) | |
538 | bfd *abfd; | |
539 | PTR ext_ptr; | |
540 | struct internal_reloc *intern; | |
541 | { | |
542 | const RELOC *ext = (RELOC *) ext_ptr; | |
543 | ||
dc810e39 AM |
544 | intern->r_vaddr = H_GET_64 (abfd, ext->r_vaddr); |
545 | intern->r_symndx = H_GET_32 (abfd, ext->r_symndx); | |
252b5132 RH |
546 | |
547 | BFD_ASSERT (bfd_header_little_endian (abfd)); | |
548 | ||
549 | intern->r_type = ((ext->r_bits[0] & RELOC_BITS0_TYPE_LITTLE) | |
550 | >> RELOC_BITS0_TYPE_SH_LITTLE); | |
551 | intern->r_extern = (ext->r_bits[1] & RELOC_BITS1_EXTERN_LITTLE) != 0; | |
552 | intern->r_offset = ((ext->r_bits[1] & RELOC_BITS1_OFFSET_LITTLE) | |
553 | >> RELOC_BITS1_OFFSET_SH_LITTLE); | |
554 | /* Ignored the reserved bits. */ | |
555 | intern->r_size = ((ext->r_bits[3] & RELOC_BITS3_SIZE_LITTLE) | |
556 | >> RELOC_BITS3_SIZE_SH_LITTLE); | |
557 | ||
558 | if (intern->r_type == ALPHA_R_LITUSE | |
559 | || intern->r_type == ALPHA_R_GPDISP) | |
560 | { | |
561 | /* Handle the LITUSE and GPDISP relocs specially. Its symndx | |
562 | value is not actually a symbol index, but is instead a | |
563 | special code. We put the code in the r_size field, and | |
564 | clobber the symndx. */ | |
565 | if (intern->r_size != 0) | |
566 | abort (); | |
567 | intern->r_size = intern->r_symndx; | |
568 | intern->r_symndx = RELOC_SECTION_NONE; | |
569 | } | |
570 | else if (intern->r_type == ALPHA_R_IGNORE) | |
571 | { | |
572 | /* The IGNORE reloc generally follows a GPDISP reloc, and is | |
573 | against the .lita section. The section is irrelevant. */ | |
574 | if (! intern->r_extern && | |
575 | intern->r_symndx == RELOC_SECTION_ABS) | |
576 | abort (); | |
577 | if (! intern->r_extern && intern->r_symndx == RELOC_SECTION_LITA) | |
578 | intern->r_symndx = RELOC_SECTION_ABS; | |
579 | } | |
580 | } | |
581 | ||
582 | /* Swap a reloc out. */ | |
583 | ||
584 | static void | |
585 | alpha_ecoff_swap_reloc_out (abfd, intern, dst) | |
586 | bfd *abfd; | |
587 | const struct internal_reloc *intern; | |
588 | PTR dst; | |
589 | { | |
590 | RELOC *ext = (RELOC *) dst; | |
591 | long symndx; | |
592 | unsigned char size; | |
593 | ||
594 | /* Undo the hackery done in swap_reloc_in. */ | |
595 | if (intern->r_type == ALPHA_R_LITUSE | |
596 | || intern->r_type == ALPHA_R_GPDISP) | |
597 | { | |
598 | symndx = intern->r_size; | |
599 | size = 0; | |
600 | } | |
601 | else if (intern->r_type == ALPHA_R_IGNORE | |
602 | && ! intern->r_extern | |
603 | && intern->r_symndx == RELOC_SECTION_ABS) | |
604 | { | |
605 | symndx = RELOC_SECTION_LITA; | |
606 | size = intern->r_size; | |
607 | } | |
608 | else | |
609 | { | |
610 | symndx = intern->r_symndx; | |
611 | size = intern->r_size; | |
612 | } | |
613 | ||
15ac1d4f | 614 | /* XXX FIXME: The maximum symndx value used to be 14 but this |
bfaaa3c2 | 615 | fails with object files produced by DEC's C++ compiler. |
15ac1d4f | 616 | Where does the value 14 (or 15) come from anyway ? */ |
252b5132 | 617 | BFD_ASSERT (intern->r_extern |
15ac1d4f | 618 | || (intern->r_symndx >= 0 && intern->r_symndx <= 15)); |
252b5132 | 619 | |
dc810e39 AM |
620 | H_PUT_64 (abfd, intern->r_vaddr, ext->r_vaddr); |
621 | H_PUT_32 (abfd, symndx, ext->r_symndx); | |
252b5132 RH |
622 | |
623 | BFD_ASSERT (bfd_header_little_endian (abfd)); | |
624 | ||
625 | ext->r_bits[0] = ((intern->r_type << RELOC_BITS0_TYPE_SH_LITTLE) | |
626 | & RELOC_BITS0_TYPE_LITTLE); | |
627 | ext->r_bits[1] = ((intern->r_extern ? RELOC_BITS1_EXTERN_LITTLE : 0) | |
628 | | ((intern->r_offset << RELOC_BITS1_OFFSET_SH_LITTLE) | |
629 | & RELOC_BITS1_OFFSET_LITTLE)); | |
630 | ext->r_bits[2] = 0; | |
631 | ext->r_bits[3] = ((size << RELOC_BITS3_SIZE_SH_LITTLE) | |
632 | & RELOC_BITS3_SIZE_LITTLE); | |
633 | } | |
634 | ||
635 | /* Finish canonicalizing a reloc. Part of this is generic to all | |
636 | ECOFF targets, and that part is in ecoff.c. The rest is done in | |
637 | this backend routine. It must fill in the howto field. */ | |
638 | ||
639 | static void | |
640 | alpha_adjust_reloc_in (abfd, intern, rptr) | |
641 | bfd *abfd; | |
642 | const struct internal_reloc *intern; | |
643 | arelent *rptr; | |
644 | { | |
645 | if (intern->r_type > ALPHA_R_GPVALUE) | |
0adc9281 NC |
646 | { |
647 | (*_bfd_error_handler) | |
648 | (_("%B: unknown/unsupported relocation type %d"), | |
649 | abfd, intern->r_type); | |
650 | bfd_set_error (bfd_error_bad_value); | |
651 | rptr->addend = 0; | |
652 | rptr->howto = NULL; | |
653 | return; | |
654 | } | |
252b5132 RH |
655 | |
656 | switch (intern->r_type) | |
657 | { | |
658 | case ALPHA_R_BRADDR: | |
659 | case ALPHA_R_SREL16: | |
660 | case ALPHA_R_SREL32: | |
661 | case ALPHA_R_SREL64: | |
662 | /* This relocs appear to be fully resolved when they are against | |
663 | internal symbols. Against external symbols, BRADDR at least | |
664 | appears to be resolved against the next instruction. */ | |
665 | if (! intern->r_extern) | |
666 | rptr->addend = 0; | |
667 | else | |
668 | rptr->addend = - (intern->r_vaddr + 4); | |
669 | break; | |
670 | ||
671 | case ALPHA_R_GPREL32: | |
672 | case ALPHA_R_LITERAL: | |
673 | /* Copy the gp value for this object file into the addend, to | |
674 | ensure that we are not confused by the linker. */ | |
675 | if (! intern->r_extern) | |
676 | rptr->addend += ecoff_data (abfd)->gp; | |
677 | break; | |
678 | ||
679 | case ALPHA_R_LITUSE: | |
680 | case ALPHA_R_GPDISP: | |
681 | /* The LITUSE and GPDISP relocs do not use a symbol, or an | |
682 | addend, but they do use a special code. Put this code in the | |
683 | addend field. */ | |
684 | rptr->addend = intern->r_size; | |
685 | break; | |
686 | ||
687 | case ALPHA_R_OP_STORE: | |
688 | /* The STORE reloc needs the size and offset fields. We store | |
689 | them in the addend. */ | |
ca724bf2 | 690 | BFD_ASSERT (intern->r_offset <= 256); |
252b5132 RH |
691 | rptr->addend = (intern->r_offset << 8) + intern->r_size; |
692 | break; | |
693 | ||
694 | case ALPHA_R_OP_PUSH: | |
695 | case ALPHA_R_OP_PSUB: | |
696 | case ALPHA_R_OP_PRSHIFT: | |
697 | /* The PUSH, PSUB and PRSHIFT relocs do not actually use an | |
698 | address. I believe that the address supplied is really an | |
699 | addend. */ | |
700 | rptr->addend = intern->r_vaddr; | |
701 | break; | |
702 | ||
703 | case ALPHA_R_GPVALUE: | |
704 | /* Set the addend field to the new GP value. */ | |
705 | rptr->addend = intern->r_symndx + ecoff_data (abfd)->gp; | |
706 | break; | |
707 | ||
708 | case ALPHA_R_IGNORE: | |
709 | /* If the type is ALPHA_R_IGNORE, make sure this is a reference | |
710 | to the absolute section so that the reloc is ignored. For | |
711 | some reason the address of this reloc type is not adjusted by | |
712 | the section vma. We record the gp value for this object file | |
713 | here, for convenience when doing the GPDISP relocation. */ | |
714 | rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
715 | rptr->address = intern->r_vaddr; | |
716 | rptr->addend = ecoff_data (abfd)->gp; | |
717 | break; | |
718 | ||
719 | default: | |
720 | break; | |
721 | } | |
722 | ||
723 | rptr->howto = &alpha_howto_table[intern->r_type]; | |
724 | } | |
725 | ||
726 | /* When writing out a reloc we need to pull some values back out of | |
727 | the addend field into the reloc. This is roughly the reverse of | |
728 | alpha_adjust_reloc_in, except that there are several changes we do | |
729 | not need to undo. */ | |
730 | ||
731 | static void | |
732 | alpha_adjust_reloc_out (abfd, rel, intern) | |
b2747490 | 733 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
734 | const arelent *rel; |
735 | struct internal_reloc *intern; | |
736 | { | |
737 | switch (intern->r_type) | |
738 | { | |
739 | case ALPHA_R_LITUSE: | |
740 | case ALPHA_R_GPDISP: | |
741 | intern->r_size = rel->addend; | |
742 | break; | |
743 | ||
744 | case ALPHA_R_OP_STORE: | |
745 | intern->r_size = rel->addend & 0xff; | |
746 | intern->r_offset = (rel->addend >> 8) & 0xff; | |
747 | break; | |
748 | ||
749 | case ALPHA_R_OP_PUSH: | |
750 | case ALPHA_R_OP_PSUB: | |
751 | case ALPHA_R_OP_PRSHIFT: | |
752 | intern->r_vaddr = rel->addend; | |
753 | break; | |
754 | ||
755 | case ALPHA_R_IGNORE: | |
756 | intern->r_vaddr = rel->address; | |
757 | break; | |
758 | ||
759 | default: | |
760 | break; | |
761 | } | |
762 | } | |
763 | ||
764 | /* The size of the stack for the relocation evaluator. */ | |
765 | #define RELOC_STACKSIZE (10) | |
766 | ||
767 | /* Alpha ECOFF relocs have a built in expression evaluator as well as | |
768 | other interdependencies. Rather than use a bunch of special | |
769 | functions and global variables, we use a single routine to do all | |
770 | the relocation for a section. I haven't yet worked out how the | |
771 | assembler is going to handle this. */ | |
772 | ||
773 | static bfd_byte * | |
774 | alpha_ecoff_get_relocated_section_contents (abfd, link_info, link_order, | |
1049f94e | 775 | data, relocatable, symbols) |
252b5132 RH |
776 | bfd *abfd; |
777 | struct bfd_link_info *link_info; | |
778 | struct bfd_link_order *link_order; | |
779 | bfd_byte *data; | |
1049f94e | 780 | bfd_boolean relocatable; |
252b5132 RH |
781 | asymbol **symbols; |
782 | { | |
783 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
784 | asection *input_section = link_order->u.indirect.section; | |
785 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
786 | arelent **reloc_vector = NULL; | |
787 | long reloc_count; | |
1049f94e | 788 | bfd *output_bfd = relocatable ? abfd : (bfd *) NULL; |
252b5132 | 789 | bfd_vma gp; |
eea6121a | 790 | bfd_size_type sz; |
b34976b6 | 791 | bfd_boolean gp_undefined; |
252b5132 RH |
792 | bfd_vma stack[RELOC_STACKSIZE]; |
793 | int tos = 0; | |
794 | ||
795 | if (reloc_size < 0) | |
796 | goto error_return; | |
dc810e39 | 797 | reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size); |
252b5132 RH |
798 | if (reloc_vector == NULL && reloc_size != 0) |
799 | goto error_return; | |
800 | ||
eea6121a AM |
801 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
802 | if (! bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
252b5132 RH |
803 | goto error_return; |
804 | ||
252b5132 RH |
805 | reloc_count = bfd_canonicalize_reloc (input_bfd, input_section, |
806 | reloc_vector, symbols); | |
807 | if (reloc_count < 0) | |
808 | goto error_return; | |
809 | if (reloc_count == 0) | |
810 | goto successful_return; | |
811 | ||
812 | /* Get the GP value for the output BFD. */ | |
b34976b6 | 813 | gp_undefined = FALSE; |
252b5132 RH |
814 | gp = _bfd_get_gp_value (abfd); |
815 | if (gp == 0) | |
816 | { | |
1049f94e | 817 | if (relocatable) |
252b5132 RH |
818 | { |
819 | asection *sec; | |
820 | bfd_vma lo; | |
821 | ||
822 | /* Make up a value. */ | |
823 | lo = (bfd_vma) -1; | |
824 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
825 | { | |
826 | if (sec->vma < lo | |
827 | && (strcmp (sec->name, ".sbss") == 0 | |
828 | || strcmp (sec->name, ".sdata") == 0 | |
829 | || strcmp (sec->name, ".lit4") == 0 | |
830 | || strcmp (sec->name, ".lit8") == 0 | |
831 | || strcmp (sec->name, ".lita") == 0)) | |
832 | lo = sec->vma; | |
833 | } | |
834 | gp = lo + 0x8000; | |
835 | _bfd_set_gp_value (abfd, gp); | |
836 | } | |
837 | else | |
838 | { | |
839 | struct bfd_link_hash_entry *h; | |
840 | ||
b34976b6 AM |
841 | h = bfd_link_hash_lookup (link_info->hash, "_gp", FALSE, FALSE, |
842 | TRUE); | |
252b5132 RH |
843 | if (h == (struct bfd_link_hash_entry *) NULL |
844 | || h->type != bfd_link_hash_defined) | |
b34976b6 | 845 | gp_undefined = TRUE; |
252b5132 RH |
846 | else |
847 | { | |
848 | gp = (h->u.def.value | |
849 | + h->u.def.section->output_section->vma | |
850 | + h->u.def.section->output_offset); | |
851 | _bfd_set_gp_value (abfd, gp); | |
852 | } | |
853 | } | |
854 | } | |
855 | ||
856 | for (; *reloc_vector != (arelent *) NULL; reloc_vector++) | |
857 | { | |
858 | arelent *rel; | |
859 | bfd_reloc_status_type r; | |
860 | char *err; | |
861 | ||
862 | rel = *reloc_vector; | |
863 | r = bfd_reloc_ok; | |
864 | switch (rel->howto->type) | |
865 | { | |
866 | case ALPHA_R_IGNORE: | |
867 | rel->address += input_section->output_offset; | |
868 | break; | |
869 | ||
870 | case ALPHA_R_REFLONG: | |
871 | case ALPHA_R_REFQUAD: | |
872 | case ALPHA_R_BRADDR: | |
873 | case ALPHA_R_HINT: | |
874 | case ALPHA_R_SREL16: | |
875 | case ALPHA_R_SREL32: | |
876 | case ALPHA_R_SREL64: | |
1049f94e | 877 | if (relocatable |
252b5132 RH |
878 | && ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0) |
879 | { | |
880 | rel->address += input_section->output_offset; | |
881 | break; | |
882 | } | |
883 | r = bfd_perform_relocation (input_bfd, rel, data, input_section, | |
884 | output_bfd, &err); | |
885 | break; | |
886 | ||
887 | case ALPHA_R_GPREL32: | |
888 | /* This relocation is used in a switch table. It is a 32 | |
889 | bit offset from the current GP value. We must adjust it | |
890 | by the different between the original GP value and the | |
891 | current GP value. The original GP value is stored in the | |
892 | addend. We adjust the addend and let | |
893 | bfd_perform_relocation finish the job. */ | |
894 | rel->addend -= gp; | |
895 | r = bfd_perform_relocation (input_bfd, rel, data, input_section, | |
896 | output_bfd, &err); | |
897 | if (r == bfd_reloc_ok && gp_undefined) | |
898 | { | |
899 | r = bfd_reloc_dangerous; | |
900 | err = (char *) _("GP relative relocation used when GP not defined"); | |
901 | } | |
902 | break; | |
903 | ||
904 | case ALPHA_R_LITERAL: | |
905 | /* This is a reference to a literal value, generally | |
906 | (always?) in the .lita section. This is a 16 bit GP | |
907 | relative relocation. Sometimes the subsequent reloc is a | |
908 | LITUSE reloc, which indicates how this reloc is used. | |
909 | This sometimes permits rewriting the two instructions | |
910 | referred to by the LITERAL and the LITUSE into different | |
911 | instructions which do not refer to .lita. This can save | |
912 | a memory reference, and permits removing a value from | |
913 | .lita thus saving GP relative space. | |
914 | ||
915 | We do not these optimizations. To do them we would need | |
916 | to arrange to link the .lita section first, so that by | |
917 | the time we got here we would know the final values to | |
918 | use. This would not be particularly difficult, but it is | |
919 | not currently implemented. */ | |
920 | ||
921 | { | |
922 | unsigned long insn; | |
923 | ||
924 | /* I believe that the LITERAL reloc will only apply to a | |
925 | ldq or ldl instruction, so check my assumption. */ | |
926 | insn = bfd_get_32 (input_bfd, data + rel->address); | |
927 | BFD_ASSERT (((insn >> 26) & 0x3f) == 0x29 | |
928 | || ((insn >> 26) & 0x3f) == 0x28); | |
929 | ||
930 | rel->addend -= gp; | |
931 | r = bfd_perform_relocation (input_bfd, rel, data, input_section, | |
932 | output_bfd, &err); | |
933 | if (r == bfd_reloc_ok && gp_undefined) | |
934 | { | |
935 | r = bfd_reloc_dangerous; | |
936 | err = | |
937 | (char *) _("GP relative relocation used when GP not defined"); | |
938 | } | |
939 | } | |
940 | break; | |
941 | ||
942 | case ALPHA_R_LITUSE: | |
943 | /* See ALPHA_R_LITERAL above for the uses of this reloc. It | |
944 | does not cause anything to happen, itself. */ | |
945 | rel->address += input_section->output_offset; | |
946 | break; | |
346ceb11 | 947 | |
252b5132 RH |
948 | case ALPHA_R_GPDISP: |
949 | /* This marks the ldah of an ldah/lda pair which loads the | |
950 | gp register with the difference of the gp value and the | |
951 | current location. The second of the pair is r_size bytes | |
952 | ahead; it used to be marked with an ALPHA_R_IGNORE reloc, | |
953 | but that no longer happens in OSF/1 3.2. */ | |
954 | { | |
955 | unsigned long insn1, insn2; | |
956 | bfd_vma addend; | |
957 | ||
958 | /* Get the two instructions. */ | |
959 | insn1 = bfd_get_32 (input_bfd, data + rel->address); | |
960 | insn2 = bfd_get_32 (input_bfd, data + rel->address + rel->addend); | |
961 | ||
962 | BFD_ASSERT (((insn1 >> 26) & 0x3f) == 0x09); /* ldah */ | |
963 | BFD_ASSERT (((insn2 >> 26) & 0x3f) == 0x08); /* lda */ | |
964 | ||
965 | /* Get the existing addend. We must account for the sign | |
966 | extension done by lda and ldah. */ | |
967 | addend = ((insn1 & 0xffff) << 16) + (insn2 & 0xffff); | |
968 | if (insn1 & 0x8000) | |
969 | { | |
970 | addend -= 0x80000000; | |
971 | addend -= 0x80000000; | |
972 | } | |
973 | if (insn2 & 0x8000) | |
974 | addend -= 0x10000; | |
975 | ||
976 | /* The existing addend includes the different between the | |
977 | gp of the input BFD and the address in the input BFD. | |
978 | Subtract this out. */ | |
979 | addend -= (ecoff_data (input_bfd)->gp | |
980 | - (input_section->vma + rel->address)); | |
981 | ||
982 | /* Now add in the final gp value, and subtract out the | |
983 | final address. */ | |
984 | addend += (gp | |
985 | - (input_section->output_section->vma | |
986 | + input_section->output_offset | |
987 | + rel->address)); | |
988 | ||
989 | /* Change the instructions, accounting for the sign | |
990 | extension, and write them out. */ | |
991 | if (addend & 0x8000) | |
992 | addend += 0x10000; | |
993 | insn1 = (insn1 & 0xffff0000) | ((addend >> 16) & 0xffff); | |
994 | insn2 = (insn2 & 0xffff0000) | (addend & 0xffff); | |
995 | ||
996 | bfd_put_32 (input_bfd, (bfd_vma) insn1, data + rel->address); | |
997 | bfd_put_32 (input_bfd, (bfd_vma) insn2, | |
998 | data + rel->address + rel->addend); | |
999 | ||
1000 | rel->address += input_section->output_offset; | |
1001 | } | |
1002 | break; | |
346ceb11 | 1003 | |
252b5132 RH |
1004 | case ALPHA_R_OP_PUSH: |
1005 | /* Push a value on the reloc evaluation stack. */ | |
1006 | { | |
1007 | asymbol *symbol; | |
1008 | bfd_vma relocation; | |
1009 | ||
1049f94e | 1010 | if (relocatable) |
252b5132 RH |
1011 | { |
1012 | rel->address += input_section->output_offset; | |
1013 | break; | |
1014 | } | |
1015 | ||
1016 | /* Figure out the relocation of this symbol. */ | |
1017 | symbol = *rel->sym_ptr_ptr; | |
1018 | ||
1019 | if (bfd_is_und_section (symbol->section)) | |
1020 | r = bfd_reloc_undefined; | |
1021 | ||
1022 | if (bfd_is_com_section (symbol->section)) | |
1023 | relocation = 0; | |
1024 | else | |
1025 | relocation = symbol->value; | |
1026 | relocation += symbol->section->output_section->vma; | |
1027 | relocation += symbol->section->output_offset; | |
1028 | relocation += rel->addend; | |
1029 | ||
1030 | if (tos >= RELOC_STACKSIZE) | |
1031 | abort (); | |
1032 | ||
1033 | stack[tos++] = relocation; | |
1034 | } | |
1035 | break; | |
1036 | ||
1037 | case ALPHA_R_OP_STORE: | |
1038 | /* Store a value from the reloc stack into a bitfield. */ | |
1039 | { | |
1040 | bfd_vma val; | |
1041 | int offset, size; | |
1042 | ||
1049f94e | 1043 | if (relocatable) |
252b5132 RH |
1044 | { |
1045 | rel->address += input_section->output_offset; | |
1046 | break; | |
1047 | } | |
1048 | ||
1049 | if (tos == 0) | |
1050 | abort (); | |
1051 | ||
1052 | /* The offset and size for this reloc are encoded into the | |
1053 | addend field by alpha_adjust_reloc_in. */ | |
1054 | offset = (rel->addend >> 8) & 0xff; | |
1055 | size = rel->addend & 0xff; | |
1056 | ||
1057 | val = bfd_get_64 (abfd, data + rel->address); | |
1058 | val &=~ (((1 << size) - 1) << offset); | |
1059 | val |= (stack[--tos] & ((1 << size) - 1)) << offset; | |
1060 | bfd_put_64 (abfd, val, data + rel->address); | |
1061 | } | |
1062 | break; | |
1063 | ||
1064 | case ALPHA_R_OP_PSUB: | |
1065 | /* Subtract a value from the top of the stack. */ | |
1066 | { | |
1067 | asymbol *symbol; | |
1068 | bfd_vma relocation; | |
1069 | ||
1049f94e | 1070 | if (relocatable) |
252b5132 RH |
1071 | { |
1072 | rel->address += input_section->output_offset; | |
1073 | break; | |
1074 | } | |
1075 | ||
1076 | /* Figure out the relocation of this symbol. */ | |
1077 | symbol = *rel->sym_ptr_ptr; | |
1078 | ||
1079 | if (bfd_is_und_section (symbol->section)) | |
1080 | r = bfd_reloc_undefined; | |
1081 | ||
1082 | if (bfd_is_com_section (symbol->section)) | |
1083 | relocation = 0; | |
1084 | else | |
1085 | relocation = symbol->value; | |
1086 | relocation += symbol->section->output_section->vma; | |
1087 | relocation += symbol->section->output_offset; | |
1088 | relocation += rel->addend; | |
1089 | ||
1090 | if (tos == 0) | |
1091 | abort (); | |
1092 | ||
1093 | stack[tos - 1] -= relocation; | |
1094 | } | |
1095 | break; | |
1096 | ||
1097 | case ALPHA_R_OP_PRSHIFT: | |
1098 | /* Shift the value on the top of the stack. */ | |
1099 | { | |
1100 | asymbol *symbol; | |
1101 | bfd_vma relocation; | |
1102 | ||
1049f94e | 1103 | if (relocatable) |
252b5132 RH |
1104 | { |
1105 | rel->address += input_section->output_offset; | |
1106 | break; | |
1107 | } | |
1108 | ||
1109 | /* Figure out the relocation of this symbol. */ | |
1110 | symbol = *rel->sym_ptr_ptr; | |
1111 | ||
1112 | if (bfd_is_und_section (symbol->section)) | |
1113 | r = bfd_reloc_undefined; | |
1114 | ||
1115 | if (bfd_is_com_section (symbol->section)) | |
1116 | relocation = 0; | |
1117 | else | |
1118 | relocation = symbol->value; | |
1119 | relocation += symbol->section->output_section->vma; | |
1120 | relocation += symbol->section->output_offset; | |
1121 | relocation += rel->addend; | |
1122 | ||
1123 | if (tos == 0) | |
1124 | abort (); | |
1125 | ||
1126 | stack[tos - 1] >>= relocation; | |
1127 | } | |
1128 | break; | |
346ceb11 | 1129 | |
252b5132 RH |
1130 | case ALPHA_R_GPVALUE: |
1131 | /* I really don't know if this does the right thing. */ | |
1132 | gp = rel->addend; | |
b34976b6 | 1133 | gp_undefined = FALSE; |
252b5132 RH |
1134 | break; |
1135 | ||
1136 | default: | |
1137 | abort (); | |
1138 | } | |
1139 | ||
1049f94e | 1140 | if (relocatable) |
252b5132 RH |
1141 | { |
1142 | asection *os = input_section->output_section; | |
1143 | ||
1144 | /* A partial link, so keep the relocs. */ | |
1145 | os->orelocation[os->reloc_count] = rel; | |
1146 | os->reloc_count++; | |
1147 | } | |
1148 | ||
346ceb11 | 1149 | if (r != bfd_reloc_ok) |
252b5132 RH |
1150 | { |
1151 | switch (r) | |
1152 | { | |
1153 | case bfd_reloc_undefined: | |
1154 | if (! ((*link_info->callbacks->undefined_symbol) | |
1155 | (link_info, bfd_asymbol_name (*rel->sym_ptr_ptr), | |
b34976b6 | 1156 | input_bfd, input_section, rel->address, TRUE))) |
252b5132 RH |
1157 | goto error_return; |
1158 | break; | |
346ceb11 | 1159 | case bfd_reloc_dangerous: |
252b5132 RH |
1160 | if (! ((*link_info->callbacks->reloc_dangerous) |
1161 | (link_info, err, input_bfd, input_section, | |
1162 | rel->address))) | |
1163 | goto error_return; | |
1164 | break; | |
1165 | case bfd_reloc_overflow: | |
1166 | if (! ((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
1167 | (link_info, NULL, |
1168 | bfd_asymbol_name (*rel->sym_ptr_ptr), | |
252b5132 RH |
1169 | rel->howto->name, rel->addend, input_bfd, |
1170 | input_section, rel->address))) | |
1171 | goto error_return; | |
1172 | break; | |
1173 | case bfd_reloc_outofrange: | |
1174 | default: | |
1175 | abort (); | |
1176 | break; | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | if (tos != 0) | |
1182 | abort (); | |
1183 | ||
1184 | successful_return: | |
1185 | if (reloc_vector != NULL) | |
1186 | free (reloc_vector); | |
1187 | return data; | |
1188 | ||
1189 | error_return: | |
1190 | if (reloc_vector != NULL) | |
1191 | free (reloc_vector); | |
1192 | return NULL; | |
1193 | } | |
1194 | ||
1195 | /* Get the howto structure for a generic reloc type. */ | |
1196 | ||
1197 | static reloc_howto_type * | |
1198 | alpha_bfd_reloc_type_lookup (abfd, code) | |
b2747490 | 1199 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1200 | bfd_reloc_code_real_type code; |
1201 | { | |
1202 | int alpha_type; | |
1203 | ||
1204 | switch (code) | |
1205 | { | |
1206 | case BFD_RELOC_32: | |
1207 | alpha_type = ALPHA_R_REFLONG; | |
1208 | break; | |
1209 | case BFD_RELOC_64: | |
1210 | case BFD_RELOC_CTOR: | |
1211 | alpha_type = ALPHA_R_REFQUAD; | |
1212 | break; | |
1213 | case BFD_RELOC_GPREL32: | |
1214 | alpha_type = ALPHA_R_GPREL32; | |
1215 | break; | |
1216 | case BFD_RELOC_ALPHA_LITERAL: | |
1217 | alpha_type = ALPHA_R_LITERAL; | |
1218 | break; | |
1219 | case BFD_RELOC_ALPHA_LITUSE: | |
1220 | alpha_type = ALPHA_R_LITUSE; | |
1221 | break; | |
1222 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1223 | alpha_type = ALPHA_R_GPDISP; | |
1224 | break; | |
1225 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1226 | alpha_type = ALPHA_R_IGNORE; | |
1227 | break; | |
1228 | case BFD_RELOC_23_PCREL_S2: | |
1229 | alpha_type = ALPHA_R_BRADDR; | |
1230 | break; | |
1231 | case BFD_RELOC_ALPHA_HINT: | |
1232 | alpha_type = ALPHA_R_HINT; | |
1233 | break; | |
1234 | case BFD_RELOC_16_PCREL: | |
1235 | alpha_type = ALPHA_R_SREL16; | |
1236 | break; | |
1237 | case BFD_RELOC_32_PCREL: | |
1238 | alpha_type = ALPHA_R_SREL32; | |
1239 | break; | |
1240 | case BFD_RELOC_64_PCREL: | |
1241 | alpha_type = ALPHA_R_SREL64; | |
1242 | break; | |
252b5132 RH |
1243 | default: |
1244 | return (reloc_howto_type *) NULL; | |
1245 | } | |
1246 | ||
1247 | return &alpha_howto_table[alpha_type]; | |
1248 | } | |
157090f7 AM |
1249 | |
1250 | static reloc_howto_type * | |
1251 | alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1252 | const char *r_name) | |
1253 | { | |
1254 | unsigned int i; | |
1255 | ||
1256 | for (i = 0; | |
1257 | i < sizeof (alpha_howto_table) / sizeof (alpha_howto_table[0]); | |
1258 | i++) | |
1259 | if (alpha_howto_table[i].name != NULL | |
1260 | && strcasecmp (alpha_howto_table[i].name, r_name) == 0) | |
1261 | return &alpha_howto_table[i]; | |
1262 | ||
1263 | return NULL; | |
1264 | } | |
252b5132 RH |
1265 | \f |
1266 | /* A helper routine for alpha_relocate_section which converts an | |
1049f94e | 1267 | external reloc when generating relocatable output. Returns the |
252b5132 RH |
1268 | relocation amount. */ |
1269 | ||
1270 | static bfd_vma | |
1271 | alpha_convert_external_reloc (output_bfd, info, input_bfd, ext_rel, h) | |
b2747490 | 1272 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1273 | struct bfd_link_info *info; |
1274 | bfd *input_bfd; | |
1275 | struct external_reloc *ext_rel; | |
1276 | struct ecoff_link_hash_entry *h; | |
1277 | { | |
1278 | unsigned long r_symndx; | |
1279 | bfd_vma relocation; | |
1280 | ||
1049f94e | 1281 | BFD_ASSERT (info->relocatable); |
252b5132 RH |
1282 | |
1283 | if (h->root.type == bfd_link_hash_defined | |
1284 | || h->root.type == bfd_link_hash_defweak) | |
1285 | { | |
1286 | asection *hsec; | |
1287 | const char *name; | |
1288 | ||
1289 | /* This symbol is defined in the output. Convert the reloc from | |
1290 | being against the symbol to being against the section. */ | |
1291 | ||
1292 | /* Clear the r_extern bit. */ | |
1293 | ext_rel->r_bits[1] &=~ RELOC_BITS1_EXTERN_LITTLE; | |
1294 | ||
1295 | /* Compute a new r_symndx value. */ | |
1296 | hsec = h->root.u.def.section; | |
1297 | name = bfd_get_section_name (output_bfd, hsec->output_section); | |
1298 | ||
dc810e39 | 1299 | r_symndx = (unsigned long) -1; |
252b5132 RH |
1300 | switch (name[1]) |
1301 | { | |
1302 | case 'A': | |
1303 | if (strcmp (name, "*ABS*") == 0) | |
1304 | r_symndx = RELOC_SECTION_ABS; | |
1305 | break; | |
1306 | case 'b': | |
1307 | if (strcmp (name, ".bss") == 0) | |
1308 | r_symndx = RELOC_SECTION_BSS; | |
1309 | break; | |
1310 | case 'd': | |
1311 | if (strcmp (name, ".data") == 0) | |
1312 | r_symndx = RELOC_SECTION_DATA; | |
1313 | break; | |
1314 | case 'f': | |
1315 | if (strcmp (name, ".fini") == 0) | |
1316 | r_symndx = RELOC_SECTION_FINI; | |
1317 | break; | |
1318 | case 'i': | |
1319 | if (strcmp (name, ".init") == 0) | |
1320 | r_symndx = RELOC_SECTION_INIT; | |
1321 | break; | |
1322 | case 'l': | |
1323 | if (strcmp (name, ".lita") == 0) | |
1324 | r_symndx = RELOC_SECTION_LITA; | |
1325 | else if (strcmp (name, ".lit8") == 0) | |
1326 | r_symndx = RELOC_SECTION_LIT8; | |
1327 | else if (strcmp (name, ".lit4") == 0) | |
1328 | r_symndx = RELOC_SECTION_LIT4; | |
1329 | break; | |
1330 | case 'p': | |
1331 | if (strcmp (name, ".pdata") == 0) | |
1332 | r_symndx = RELOC_SECTION_PDATA; | |
1333 | break; | |
1334 | case 'r': | |
1335 | if (strcmp (name, ".rdata") == 0) | |
1336 | r_symndx = RELOC_SECTION_RDATA; | |
1337 | else if (strcmp (name, ".rconst") == 0) | |
1338 | r_symndx = RELOC_SECTION_RCONST; | |
1339 | break; | |
1340 | case 's': | |
1341 | if (strcmp (name, ".sdata") == 0) | |
1342 | r_symndx = RELOC_SECTION_SDATA; | |
1343 | else if (strcmp (name, ".sbss") == 0) | |
1344 | r_symndx = RELOC_SECTION_SBSS; | |
1345 | break; | |
1346 | case 't': | |
1347 | if (strcmp (name, ".text") == 0) | |
1348 | r_symndx = RELOC_SECTION_TEXT; | |
1349 | break; | |
1350 | case 'x': | |
1351 | if (strcmp (name, ".xdata") == 0) | |
1352 | r_symndx = RELOC_SECTION_XDATA; | |
1353 | break; | |
1354 | } | |
346ceb11 | 1355 | |
cea4409c | 1356 | if (r_symndx == (unsigned long) -1) |
252b5132 RH |
1357 | abort (); |
1358 | ||
1359 | /* Add the section VMA and the symbol value. */ | |
1360 | relocation = (h->root.u.def.value | |
1361 | + hsec->output_section->vma | |
1362 | + hsec->output_offset); | |
1363 | } | |
1364 | else | |
1365 | { | |
1366 | /* Change the symndx value to the right one for | |
1367 | the output BFD. */ | |
1368 | r_symndx = h->indx; | |
cea4409c | 1369 | if (r_symndx == (unsigned long) -1) |
252b5132 RH |
1370 | { |
1371 | /* Caller must give an error. */ | |
1372 | r_symndx = 0; | |
1373 | } | |
1374 | relocation = 0; | |
1375 | } | |
1376 | ||
1377 | /* Write out the new r_symndx value. */ | |
dc810e39 | 1378 | H_PUT_32 (input_bfd, r_symndx, ext_rel->r_symndx); |
252b5132 RH |
1379 | |
1380 | return relocation; | |
1381 | } | |
1382 | ||
1383 | /* Relocate a section while linking an Alpha ECOFF file. This is | |
1384 | quite similar to get_relocated_section_contents. Perhaps they | |
1385 | could be combined somehow. */ | |
1386 | ||
b34976b6 | 1387 | static bfd_boolean |
252b5132 RH |
1388 | alpha_relocate_section (output_bfd, info, input_bfd, input_section, |
1389 | contents, external_relocs) | |
1390 | bfd *output_bfd; | |
1391 | struct bfd_link_info *info; | |
1392 | bfd *input_bfd; | |
1393 | asection *input_section; | |
1394 | bfd_byte *contents; | |
1395 | PTR external_relocs; | |
1396 | { | |
1397 | asection **symndx_to_section, *lita_sec; | |
1398 | struct ecoff_link_hash_entry **sym_hashes; | |
1399 | bfd_vma gp; | |
b34976b6 | 1400 | bfd_boolean gp_undefined; |
252b5132 RH |
1401 | bfd_vma stack[RELOC_STACKSIZE]; |
1402 | int tos = 0; | |
1403 | struct external_reloc *ext_rel; | |
1404 | struct external_reloc *ext_rel_end; | |
dc810e39 | 1405 | bfd_size_type amt; |
252b5132 RH |
1406 | |
1407 | /* We keep a table mapping the symndx found in an internal reloc to | |
1408 | the appropriate section. This is faster than looking up the | |
1409 | section by name each time. */ | |
1410 | symndx_to_section = ecoff_data (input_bfd)->symndx_to_section; | |
1411 | if (symndx_to_section == (asection **) NULL) | |
1412 | { | |
dc810e39 AM |
1413 | amt = NUM_RELOC_SECTIONS * sizeof (asection *); |
1414 | symndx_to_section = (asection **) bfd_alloc (input_bfd, amt); | |
252b5132 | 1415 | if (!symndx_to_section) |
b34976b6 | 1416 | return FALSE; |
252b5132 RH |
1417 | |
1418 | symndx_to_section[RELOC_SECTION_NONE] = NULL; | |
1419 | symndx_to_section[RELOC_SECTION_TEXT] = | |
1420 | bfd_get_section_by_name (input_bfd, ".text"); | |
1421 | symndx_to_section[RELOC_SECTION_RDATA] = | |
1422 | bfd_get_section_by_name (input_bfd, ".rdata"); | |
1423 | symndx_to_section[RELOC_SECTION_DATA] = | |
1424 | bfd_get_section_by_name (input_bfd, ".data"); | |
1425 | symndx_to_section[RELOC_SECTION_SDATA] = | |
1426 | bfd_get_section_by_name (input_bfd, ".sdata"); | |
1427 | symndx_to_section[RELOC_SECTION_SBSS] = | |
1428 | bfd_get_section_by_name (input_bfd, ".sbss"); | |
1429 | symndx_to_section[RELOC_SECTION_BSS] = | |
1430 | bfd_get_section_by_name (input_bfd, ".bss"); | |
1431 | symndx_to_section[RELOC_SECTION_INIT] = | |
1432 | bfd_get_section_by_name (input_bfd, ".init"); | |
1433 | symndx_to_section[RELOC_SECTION_LIT8] = | |
1434 | bfd_get_section_by_name (input_bfd, ".lit8"); | |
1435 | symndx_to_section[RELOC_SECTION_LIT4] = | |
1436 | bfd_get_section_by_name (input_bfd, ".lit4"); | |
1437 | symndx_to_section[RELOC_SECTION_XDATA] = | |
1438 | bfd_get_section_by_name (input_bfd, ".xdata"); | |
1439 | symndx_to_section[RELOC_SECTION_PDATA] = | |
1440 | bfd_get_section_by_name (input_bfd, ".pdata"); | |
1441 | symndx_to_section[RELOC_SECTION_FINI] = | |
1442 | bfd_get_section_by_name (input_bfd, ".fini"); | |
1443 | symndx_to_section[RELOC_SECTION_LITA] = | |
1444 | bfd_get_section_by_name (input_bfd, ".lita"); | |
1445 | symndx_to_section[RELOC_SECTION_ABS] = bfd_abs_section_ptr; | |
1446 | symndx_to_section[RELOC_SECTION_RCONST] = | |
1447 | bfd_get_section_by_name (input_bfd, ".rconst"); | |
1448 | ||
1449 | ecoff_data (input_bfd)->symndx_to_section = symndx_to_section; | |
1450 | } | |
1451 | ||
1452 | sym_hashes = ecoff_data (input_bfd)->sym_hashes; | |
1453 | ||
1454 | /* On the Alpha, the .lita section must be addressable by the global | |
1455 | pointer. To support large programs, we need to allow multiple | |
1456 | global pointers. This works as long as each input .lita section | |
1457 | is <64KB big. This implies that when producing relocatable | |
346ceb11 | 1458 | output, the .lita section is limited to 64KB. . */ |
252b5132 RH |
1459 | |
1460 | lita_sec = symndx_to_section[RELOC_SECTION_LITA]; | |
1461 | gp = _bfd_get_gp_value (output_bfd); | |
1049f94e | 1462 | if (! info->relocatable && lita_sec != NULL) |
252b5132 RH |
1463 | { |
1464 | struct ecoff_section_tdata *lita_sec_data; | |
1465 | ||
1466 | /* Make sure we have a section data structure to which we can | |
1467 | hang on to the gp value we pick for the section. */ | |
1468 | lita_sec_data = ecoff_section_data (input_bfd, lita_sec); | |
1469 | if (lita_sec_data == NULL) | |
1470 | { | |
dc810e39 | 1471 | amt = sizeof (struct ecoff_section_tdata); |
252b5132 | 1472 | lita_sec_data = ((struct ecoff_section_tdata *) |
dc810e39 | 1473 | bfd_zalloc (input_bfd, amt)); |
e9edc808 | 1474 | lita_sec->used_by_bfd = lita_sec_data; |
252b5132 RH |
1475 | } |
1476 | ||
1477 | if (lita_sec_data->gp != 0) | |
1478 | { | |
1479 | /* If we already assigned a gp to this section, we better | |
1480 | stick with that value. */ | |
1481 | gp = lita_sec_data->gp; | |
1482 | } | |
1483 | else | |
1484 | { | |
1485 | bfd_vma lita_vma; | |
1486 | bfd_size_type lita_size; | |
1487 | ||
1488 | lita_vma = lita_sec->output_offset + lita_sec->output_section->vma; | |
eea6121a | 1489 | lita_size = lita_sec->size; |
252b5132 RH |
1490 | |
1491 | if (gp == 0 | |
1492 | || lita_vma < gp - 0x8000 | |
1493 | || lita_vma + lita_size >= gp + 0x8000) | |
1494 | { | |
1495 | /* Either gp hasn't been set at all or the current gp | |
1496 | cannot address this .lita section. In both cases we | |
1497 | reset the gp to point into the "middle" of the | |
1498 | current input .lita section. */ | |
1499 | if (gp && !ecoff_data (output_bfd)->issued_multiple_gp_warning) | |
1500 | { | |
1501 | (*info->callbacks->warning) (info, | |
1502 | _("using multiple gp values"), | |
1503 | (char *) NULL, output_bfd, | |
1504 | (asection *) NULL, (bfd_vma) 0); | |
b34976b6 | 1505 | ecoff_data (output_bfd)->issued_multiple_gp_warning = TRUE; |
252b5132 RH |
1506 | } |
1507 | if (lita_vma < gp - 0x8000) | |
1508 | gp = lita_vma + lita_size - 0x8000; | |
1509 | else | |
1510 | gp = lita_vma + 0x8000; | |
1511 | ||
1512 | } | |
1513 | ||
1514 | lita_sec_data->gp = gp; | |
1515 | } | |
1516 | ||
1517 | _bfd_set_gp_value (output_bfd, gp); | |
1518 | } | |
1519 | ||
1520 | gp_undefined = (gp == 0); | |
1521 | ||
1522 | BFD_ASSERT (bfd_header_little_endian (output_bfd)); | |
1523 | BFD_ASSERT (bfd_header_little_endian (input_bfd)); | |
1524 | ||
1525 | ext_rel = (struct external_reloc *) external_relocs; | |
1526 | ext_rel_end = ext_rel + input_section->reloc_count; | |
1527 | for (; ext_rel < ext_rel_end; ext_rel++) | |
1528 | { | |
1529 | bfd_vma r_vaddr; | |
1530 | unsigned long r_symndx; | |
1531 | int r_type; | |
1532 | int r_extern; | |
1533 | int r_offset; | |
1534 | int r_size; | |
b34976b6 AM |
1535 | bfd_boolean relocatep; |
1536 | bfd_boolean adjust_addrp; | |
1537 | bfd_boolean gp_usedp; | |
252b5132 RH |
1538 | bfd_vma addend; |
1539 | ||
dc810e39 AM |
1540 | r_vaddr = H_GET_64 (input_bfd, ext_rel->r_vaddr); |
1541 | r_symndx = H_GET_32 (input_bfd, ext_rel->r_symndx); | |
252b5132 RH |
1542 | |
1543 | r_type = ((ext_rel->r_bits[0] & RELOC_BITS0_TYPE_LITTLE) | |
1544 | >> RELOC_BITS0_TYPE_SH_LITTLE); | |
1545 | r_extern = (ext_rel->r_bits[1] & RELOC_BITS1_EXTERN_LITTLE) != 0; | |
1546 | r_offset = ((ext_rel->r_bits[1] & RELOC_BITS1_OFFSET_LITTLE) | |
1547 | >> RELOC_BITS1_OFFSET_SH_LITTLE); | |
1548 | /* Ignored the reserved bits. */ | |
1549 | r_size = ((ext_rel->r_bits[3] & RELOC_BITS3_SIZE_LITTLE) | |
1550 | >> RELOC_BITS3_SIZE_SH_LITTLE); | |
1551 | ||
b34976b6 AM |
1552 | relocatep = FALSE; |
1553 | adjust_addrp = TRUE; | |
1554 | gp_usedp = FALSE; | |
252b5132 RH |
1555 | addend = 0; |
1556 | ||
1557 | switch (r_type) | |
1558 | { | |
0adc9281 NC |
1559 | case ALPHA_R_GPRELHIGH: |
1560 | (*_bfd_error_handler) | |
1561 | (_("%B: unsupported relocation: ALPHA_R_GPRELHIGH"), | |
1562 | input_bfd); | |
1563 | bfd_set_error (bfd_error_bad_value); | |
1564 | continue; | |
1565 | ||
1566 | case ALPHA_R_GPRELLOW: | |
1567 | (*_bfd_error_handler) | |
1568 | (_("%B: unsupported relocation: ALPHA_R_GPRELLOW"), | |
1569 | input_bfd); | |
1570 | bfd_set_error (bfd_error_bad_value); | |
1571 | continue; | |
1572 | ||
252b5132 | 1573 | default: |
0adc9281 NC |
1574 | (*_bfd_error_handler) |
1575 | (_("%B: unknown relocation type %d"), | |
1576 | input_bfd, (int) r_type); | |
1577 | bfd_set_error (bfd_error_bad_value); | |
1578 | continue; | |
252b5132 RH |
1579 | |
1580 | case ALPHA_R_IGNORE: | |
1581 | /* This reloc appears after a GPDISP reloc. On earlier | |
1582 | versions of OSF/1, It marked the position of the second | |
1583 | instruction to be altered by the GPDISP reloc, but it is | |
1584 | not otherwise used for anything. For some reason, the | |
1585 | address of the relocation does not appear to include the | |
1586 | section VMA, unlike the other relocation types. */ | |
1049f94e | 1587 | if (info->relocatable) |
dc810e39 AM |
1588 | H_PUT_64 (input_bfd, input_section->output_offset + r_vaddr, |
1589 | ext_rel->r_vaddr); | |
b34976b6 | 1590 | adjust_addrp = FALSE; |
252b5132 RH |
1591 | break; |
1592 | ||
1593 | case ALPHA_R_REFLONG: | |
1594 | case ALPHA_R_REFQUAD: | |
1595 | case ALPHA_R_HINT: | |
b34976b6 | 1596 | relocatep = TRUE; |
252b5132 RH |
1597 | break; |
1598 | ||
1599 | case ALPHA_R_BRADDR: | |
1600 | case ALPHA_R_SREL16: | |
1601 | case ALPHA_R_SREL32: | |
1602 | case ALPHA_R_SREL64: | |
1603 | if (r_extern) | |
1604 | addend += - (r_vaddr + 4); | |
b34976b6 | 1605 | relocatep = TRUE; |
252b5132 RH |
1606 | break; |
1607 | ||
1608 | case ALPHA_R_GPREL32: | |
1609 | /* This relocation is used in a switch table. It is a 32 | |
1610 | bit offset from the current GP value. We must adjust it | |
1611 | by the different between the original GP value and the | |
1612 | current GP value. */ | |
b34976b6 | 1613 | relocatep = TRUE; |
252b5132 | 1614 | addend = ecoff_data (input_bfd)->gp - gp; |
b34976b6 | 1615 | gp_usedp = TRUE; |
252b5132 RH |
1616 | break; |
1617 | ||
1618 | case ALPHA_R_LITERAL: | |
1619 | /* This is a reference to a literal value, generally | |
1620 | (always?) in the .lita section. This is a 16 bit GP | |
1621 | relative relocation. Sometimes the subsequent reloc is a | |
1622 | LITUSE reloc, which indicates how this reloc is used. | |
1623 | This sometimes permits rewriting the two instructions | |
1624 | referred to by the LITERAL and the LITUSE into different | |
1625 | instructions which do not refer to .lita. This can save | |
1626 | a memory reference, and permits removing a value from | |
1627 | .lita thus saving GP relative space. | |
1628 | ||
1629 | We do not these optimizations. To do them we would need | |
1630 | to arrange to link the .lita section first, so that by | |
1631 | the time we got here we would know the final values to | |
1632 | use. This would not be particularly difficult, but it is | |
1633 | not currently implemented. */ | |
1634 | ||
1635 | /* I believe that the LITERAL reloc will only apply to a ldq | |
1636 | or ldl instruction, so check my assumption. */ | |
1637 | { | |
1638 | unsigned long insn; | |
1639 | ||
1640 | insn = bfd_get_32 (input_bfd, | |
1641 | contents + r_vaddr - input_section->vma); | |
1642 | BFD_ASSERT (((insn >> 26) & 0x3f) == 0x29 | |
1643 | || ((insn >> 26) & 0x3f) == 0x28); | |
1644 | } | |
1645 | ||
b34976b6 | 1646 | relocatep = TRUE; |
252b5132 | 1647 | addend = ecoff_data (input_bfd)->gp - gp; |
b34976b6 | 1648 | gp_usedp = TRUE; |
252b5132 RH |
1649 | break; |
1650 | ||
1651 | case ALPHA_R_LITUSE: | |
1652 | /* See ALPHA_R_LITERAL above for the uses of this reloc. It | |
1653 | does not cause anything to happen, itself. */ | |
1654 | break; | |
346ceb11 | 1655 | |
252b5132 RH |
1656 | case ALPHA_R_GPDISP: |
1657 | /* This marks the ldah of an ldah/lda pair which loads the | |
1658 | gp register with the difference of the gp value and the | |
1659 | current location. The second of the pair is r_symndx | |
1660 | bytes ahead. It used to be marked with an ALPHA_R_IGNORE | |
1661 | reloc, but OSF/1 3.2 no longer does that. */ | |
1662 | { | |
1663 | unsigned long insn1, insn2; | |
1664 | ||
1665 | /* Get the two instructions. */ | |
1666 | insn1 = bfd_get_32 (input_bfd, | |
1667 | contents + r_vaddr - input_section->vma); | |
1668 | insn2 = bfd_get_32 (input_bfd, | |
1669 | (contents | |
1670 | + r_vaddr | |
1671 | - input_section->vma | |
1672 | + r_symndx)); | |
1673 | ||
1674 | BFD_ASSERT (((insn1 >> 26) & 0x3f) == 0x09); /* ldah */ | |
1675 | BFD_ASSERT (((insn2 >> 26) & 0x3f) == 0x08); /* lda */ | |
1676 | ||
1677 | /* Get the existing addend. We must account for the sign | |
1678 | extension done by lda and ldah. */ | |
1679 | addend = ((insn1 & 0xffff) << 16) + (insn2 & 0xffff); | |
1680 | if (insn1 & 0x8000) | |
1681 | { | |
1682 | /* This is addend -= 0x100000000 without causing an | |
1683 | integer overflow on a 32 bit host. */ | |
1684 | addend -= 0x80000000; | |
1685 | addend -= 0x80000000; | |
1686 | } | |
1687 | if (insn2 & 0x8000) | |
1688 | addend -= 0x10000; | |
1689 | ||
1690 | /* The existing addend includes the difference between the | |
1691 | gp of the input BFD and the address in the input BFD. | |
1692 | We want to change this to the difference between the | |
1693 | final GP and the final address. */ | |
1694 | addend += (gp | |
1695 | - ecoff_data (input_bfd)->gp | |
1696 | + input_section->vma | |
1697 | - (input_section->output_section->vma | |
1698 | + input_section->output_offset)); | |
1699 | ||
1700 | /* Change the instructions, accounting for the sign | |
1701 | extension, and write them out. */ | |
1702 | if (addend & 0x8000) | |
1703 | addend += 0x10000; | |
1704 | insn1 = (insn1 & 0xffff0000) | ((addend >> 16) & 0xffff); | |
1705 | insn2 = (insn2 & 0xffff0000) | (addend & 0xffff); | |
1706 | ||
1707 | bfd_put_32 (input_bfd, (bfd_vma) insn1, | |
1708 | contents + r_vaddr - input_section->vma); | |
1709 | bfd_put_32 (input_bfd, (bfd_vma) insn2, | |
1710 | contents + r_vaddr - input_section->vma + r_symndx); | |
1711 | ||
b34976b6 | 1712 | gp_usedp = TRUE; |
252b5132 RH |
1713 | } |
1714 | break; | |
346ceb11 | 1715 | |
252b5132 RH |
1716 | case ALPHA_R_OP_PUSH: |
1717 | case ALPHA_R_OP_PSUB: | |
1718 | case ALPHA_R_OP_PRSHIFT: | |
1719 | /* Manipulate values on the reloc evaluation stack. The | |
1720 | r_vaddr field is not an address in input_section, it is | |
1721 | the current value (including any addend) of the object | |
1722 | being used. */ | |
1723 | if (! r_extern) | |
1724 | { | |
1725 | asection *s; | |
1726 | ||
1727 | s = symndx_to_section[r_symndx]; | |
1728 | if (s == (asection *) NULL) | |
1729 | abort (); | |
1730 | addend = s->output_section->vma + s->output_offset - s->vma; | |
1731 | } | |
1732 | else | |
1733 | { | |
1734 | struct ecoff_link_hash_entry *h; | |
1735 | ||
1736 | h = sym_hashes[r_symndx]; | |
1737 | if (h == (struct ecoff_link_hash_entry *) NULL) | |
1738 | abort (); | |
1739 | ||
1049f94e | 1740 | if (! info->relocatable) |
252b5132 RH |
1741 | { |
1742 | if (h->root.type == bfd_link_hash_defined | |
1743 | || h->root.type == bfd_link_hash_defweak) | |
1744 | addend = (h->root.u.def.value | |
1745 | + h->root.u.def.section->output_section->vma | |
1746 | + h->root.u.def.section->output_offset); | |
1747 | else | |
1748 | { | |
1749 | /* Note that we pass the address as 0, since we | |
1750 | do not have a meaningful number for the | |
1751 | location within the section that is being | |
1752 | relocated. */ | |
1753 | if (! ((*info->callbacks->undefined_symbol) | |
1754 | (info, h->root.root.string, input_bfd, | |
b34976b6 AM |
1755 | input_section, (bfd_vma) 0, TRUE))) |
1756 | return FALSE; | |
252b5132 RH |
1757 | addend = 0; |
1758 | } | |
1759 | } | |
1760 | else | |
1761 | { | |
1762 | if (h->root.type != bfd_link_hash_defined | |
1763 | && h->root.type != bfd_link_hash_defweak | |
1764 | && h->indx == -1) | |
1765 | { | |
1766 | /* This symbol is not being written out. Pass | |
1767 | the address as 0, as with undefined_symbol, | |
1768 | above. */ | |
1769 | if (! ((*info->callbacks->unattached_reloc) | |
1770 | (info, h->root.root.string, input_bfd, | |
1771 | input_section, (bfd_vma) 0))) | |
b34976b6 | 1772 | return FALSE; |
252b5132 RH |
1773 | } |
1774 | ||
1775 | addend = alpha_convert_external_reloc (output_bfd, info, | |
1776 | input_bfd, | |
1777 | ext_rel, h); | |
1778 | } | |
1779 | } | |
1780 | ||
1781 | addend += r_vaddr; | |
1782 | ||
1049f94e | 1783 | if (info->relocatable) |
252b5132 RH |
1784 | { |
1785 | /* Adjust r_vaddr by the addend. */ | |
dc810e39 | 1786 | H_PUT_64 (input_bfd, addend, ext_rel->r_vaddr); |
252b5132 RH |
1787 | } |
1788 | else | |
1789 | { | |
1790 | switch (r_type) | |
1791 | { | |
1792 | case ALPHA_R_OP_PUSH: | |
1793 | if (tos >= RELOC_STACKSIZE) | |
1794 | abort (); | |
1795 | stack[tos++] = addend; | |
1796 | break; | |
1797 | ||
1798 | case ALPHA_R_OP_PSUB: | |
1799 | if (tos == 0) | |
1800 | abort (); | |
1801 | stack[tos - 1] -= addend; | |
1802 | break; | |
1803 | ||
1804 | case ALPHA_R_OP_PRSHIFT: | |
1805 | if (tos == 0) | |
1806 | abort (); | |
1807 | stack[tos - 1] >>= addend; | |
1808 | break; | |
1809 | } | |
1810 | } | |
1811 | ||
b34976b6 | 1812 | adjust_addrp = FALSE; |
252b5132 RH |
1813 | break; |
1814 | ||
1815 | case ALPHA_R_OP_STORE: | |
1816 | /* Store a value from the reloc stack into a bitfield. If | |
1049f94e | 1817 | we are generating relocatable output, all we do is |
252b5132 | 1818 | adjust the address of the reloc. */ |
1049f94e | 1819 | if (! info->relocatable) |
252b5132 RH |
1820 | { |
1821 | bfd_vma mask; | |
1822 | bfd_vma val; | |
1823 | ||
1824 | if (tos == 0) | |
1825 | abort (); | |
1826 | ||
1827 | /* Get the relocation mask. The separate steps and the | |
1828 | casts to bfd_vma are attempts to avoid a bug in the | |
1829 | Alpha OSF 1.3 C compiler. See reloc.c for more | |
1830 | details. */ | |
1831 | mask = 1; | |
1832 | mask <<= (bfd_vma) r_size; | |
1833 | mask -= 1; | |
1834 | ||
1835 | /* FIXME: I don't know what kind of overflow checking, | |
1836 | if any, should be done here. */ | |
1837 | val = bfd_get_64 (input_bfd, | |
1838 | contents + r_vaddr - input_section->vma); | |
1839 | val &=~ mask << (bfd_vma) r_offset; | |
1840 | val |= (stack[--tos] & mask) << (bfd_vma) r_offset; | |
1841 | bfd_put_64 (input_bfd, val, | |
1842 | contents + r_vaddr - input_section->vma); | |
1843 | } | |
1844 | break; | |
1845 | ||
1846 | case ALPHA_R_GPVALUE: | |
1847 | /* I really don't know if this does the right thing. */ | |
1848 | gp = ecoff_data (input_bfd)->gp + r_symndx; | |
b34976b6 | 1849 | gp_undefined = FALSE; |
252b5132 RH |
1850 | break; |
1851 | } | |
1852 | ||
1853 | if (relocatep) | |
1854 | { | |
1855 | reloc_howto_type *howto; | |
1856 | struct ecoff_link_hash_entry *h = NULL; | |
1857 | asection *s = NULL; | |
1858 | bfd_vma relocation; | |
1859 | bfd_reloc_status_type r; | |
1860 | ||
1861 | /* Perform a relocation. */ | |
1862 | ||
1863 | howto = &alpha_howto_table[r_type]; | |
1864 | ||
1865 | if (r_extern) | |
1866 | { | |
1867 | h = sym_hashes[r_symndx]; | |
1868 | /* If h is NULL, that means that there is a reloc | |
1869 | against an external symbol which we thought was just | |
1870 | a debugging symbol. This should not happen. */ | |
1871 | if (h == (struct ecoff_link_hash_entry *) NULL) | |
1872 | abort (); | |
1873 | } | |
1874 | else | |
1875 | { | |
1876 | if (r_symndx >= NUM_RELOC_SECTIONS) | |
1877 | s = NULL; | |
1878 | else | |
1879 | s = symndx_to_section[r_symndx]; | |
1880 | ||
1881 | if (s == (asection *) NULL) | |
1882 | abort (); | |
1883 | } | |
1884 | ||
1049f94e | 1885 | if (info->relocatable) |
252b5132 | 1886 | { |
1049f94e | 1887 | /* We are generating relocatable output, and must |
252b5132 RH |
1888 | convert the existing reloc. */ |
1889 | if (r_extern) | |
1890 | { | |
1891 | if (h->root.type != bfd_link_hash_defined | |
1892 | && h->root.type != bfd_link_hash_defweak | |
1893 | && h->indx == -1) | |
1894 | { | |
1895 | /* This symbol is not being written out. */ | |
1896 | if (! ((*info->callbacks->unattached_reloc) | |
1897 | (info, h->root.root.string, input_bfd, | |
1898 | input_section, r_vaddr - input_section->vma))) | |
b34976b6 | 1899 | return FALSE; |
252b5132 RH |
1900 | } |
1901 | ||
1902 | relocation = alpha_convert_external_reloc (output_bfd, | |
1903 | info, | |
1904 | input_bfd, | |
1905 | ext_rel, | |
1906 | h); | |
1907 | } | |
1908 | else | |
1909 | { | |
1910 | /* This is a relocation against a section. Adjust | |
1911 | the value by the amount the section moved. */ | |
1912 | relocation = (s->output_section->vma | |
1913 | + s->output_offset | |
1914 | - s->vma); | |
1915 | } | |
1916 | ||
1917 | /* If this is PC relative, the existing object file | |
1918 | appears to already have the reloc worked out. We | |
1919 | must subtract out the old value and add in the new | |
1920 | one. */ | |
1921 | if (howto->pc_relative) | |
1922 | relocation -= (input_section->output_section->vma | |
1923 | + input_section->output_offset | |
1924 | - input_section->vma); | |
1925 | ||
1926 | /* Put in any addend. */ | |
1927 | relocation += addend; | |
1928 | ||
1929 | /* Adjust the contents. */ | |
1930 | r = _bfd_relocate_contents (howto, input_bfd, relocation, | |
1931 | (contents | |
1932 | + r_vaddr | |
1933 | - input_section->vma)); | |
1934 | } | |
1935 | else | |
1936 | { | |
1937 | /* We are producing a final executable. */ | |
1938 | if (r_extern) | |
1939 | { | |
1940 | /* This is a reloc against a symbol. */ | |
1941 | if (h->root.type == bfd_link_hash_defined | |
1942 | || h->root.type == bfd_link_hash_defweak) | |
1943 | { | |
1944 | asection *hsec; | |
1945 | ||
1946 | hsec = h->root.u.def.section; | |
1947 | relocation = (h->root.u.def.value | |
1948 | + hsec->output_section->vma | |
1949 | + hsec->output_offset); | |
1950 | } | |
1951 | else | |
1952 | { | |
1953 | if (! ((*info->callbacks->undefined_symbol) | |
1954 | (info, h->root.root.string, input_bfd, | |
1955 | input_section, | |
b34976b6 AM |
1956 | r_vaddr - input_section->vma, TRUE))) |
1957 | return FALSE; | |
252b5132 RH |
1958 | relocation = 0; |
1959 | } | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | /* This is a reloc against a section. */ | |
1964 | relocation = (s->output_section->vma | |
1965 | + s->output_offset | |
1966 | - s->vma); | |
1967 | ||
1968 | /* Adjust a PC relative relocation by removing the | |
1969 | reference to the original source section. */ | |
1970 | if (howto->pc_relative) | |
1971 | relocation += input_section->vma; | |
1972 | } | |
1973 | ||
1974 | r = _bfd_final_link_relocate (howto, | |
1975 | input_bfd, | |
1976 | input_section, | |
1977 | contents, | |
1978 | r_vaddr - input_section->vma, | |
1979 | relocation, | |
1980 | addend); | |
1981 | } | |
1982 | ||
1983 | if (r != bfd_reloc_ok) | |
1984 | { | |
1985 | switch (r) | |
1986 | { | |
1987 | default: | |
1988 | case bfd_reloc_outofrange: | |
1989 | abort (); | |
1990 | case bfd_reloc_overflow: | |
1991 | { | |
1992 | const char *name; | |
1993 | ||
1994 | if (r_extern) | |
1995 | name = sym_hashes[r_symndx]->root.root.string; | |
1996 | else | |
1997 | name = bfd_section_name (input_bfd, | |
1998 | symndx_to_section[r_symndx]); | |
1999 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
2000 | (info, NULL, name, |
2001 | alpha_howto_table[r_type].name, | |
252b5132 RH |
2002 | (bfd_vma) 0, input_bfd, input_section, |
2003 | r_vaddr - input_section->vma))) | |
b34976b6 | 2004 | return FALSE; |
252b5132 RH |
2005 | } |
2006 | break; | |
2007 | } | |
2008 | } | |
2009 | } | |
2010 | ||
1049f94e | 2011 | if (info->relocatable && adjust_addrp) |
252b5132 RH |
2012 | { |
2013 | /* Change the address of the relocation. */ | |
dc810e39 AM |
2014 | H_PUT_64 (input_bfd, |
2015 | (input_section->output_section->vma | |
2016 | + input_section->output_offset | |
2017 | - input_section->vma | |
2018 | + r_vaddr), | |
2019 | ext_rel->r_vaddr); | |
252b5132 RH |
2020 | } |
2021 | ||
2022 | if (gp_usedp && gp_undefined) | |
2023 | { | |
2024 | if (! ((*info->callbacks->reloc_dangerous) | |
cc9ff76a | 2025 | (info, _("GP relative relocation used when GP not defined"), |
252b5132 | 2026 | input_bfd, input_section, r_vaddr - input_section->vma))) |
b34976b6 | 2027 | return FALSE; |
252b5132 RH |
2028 | /* Only give the error once per link. */ |
2029 | gp = 4; | |
2030 | _bfd_set_gp_value (output_bfd, gp); | |
b34976b6 | 2031 | gp_undefined = FALSE; |
252b5132 RH |
2032 | } |
2033 | } | |
2034 | ||
2035 | if (tos != 0) | |
2036 | abort (); | |
2037 | ||
b34976b6 | 2038 | return TRUE; |
252b5132 RH |
2039 | } |
2040 | \f | |
2041 | /* Do final adjustments to the filehdr and the aouthdr. This routine | |
2042 | sets the dynamic bits in the file header. */ | |
2043 | ||
b34976b6 | 2044 | static bfd_boolean |
252b5132 RH |
2045 | alpha_adjust_headers (abfd, fhdr, ahdr) |
2046 | bfd *abfd; | |
2047 | struct internal_filehdr *fhdr; | |
b2747490 | 2048 | struct internal_aouthdr *ahdr ATTRIBUTE_UNUSED; |
252b5132 RH |
2049 | { |
2050 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == (DYNAMIC | EXEC_P)) | |
2051 | fhdr->f_flags |= F_ALPHA_CALL_SHARED; | |
2052 | else if ((abfd->flags & DYNAMIC) != 0) | |
2053 | fhdr->f_flags |= F_ALPHA_SHARABLE; | |
b34976b6 | 2054 | return TRUE; |
252b5132 RH |
2055 | } |
2056 | \f | |
2057 | /* Archive handling. In OSF/1 (or Digital Unix) v3.2, Digital | |
2058 | introduced archive packing, in which the elements in an archive are | |
2059 | optionally compressed using a simple dictionary scheme. We know | |
2060 | how to read such archives, but we don't write them. */ | |
2061 | ||
2062 | #define alpha_ecoff_slurp_armap _bfd_ecoff_slurp_armap | |
2063 | #define alpha_ecoff_slurp_extended_name_table \ | |
2064 | _bfd_ecoff_slurp_extended_name_table | |
2065 | #define alpha_ecoff_construct_extended_name_table \ | |
2066 | _bfd_ecoff_construct_extended_name_table | |
2067 | #define alpha_ecoff_truncate_arname _bfd_ecoff_truncate_arname | |
2068 | #define alpha_ecoff_write_armap _bfd_ecoff_write_armap | |
8f95b6e4 | 2069 | #define alpha_ecoff_write_ar_hdr _bfd_generic_write_ar_hdr |
252b5132 RH |
2070 | #define alpha_ecoff_generic_stat_arch_elt _bfd_ecoff_generic_stat_arch_elt |
2071 | #define alpha_ecoff_update_armap_timestamp _bfd_ecoff_update_armap_timestamp | |
2072 | ||
2073 | /* A compressed file uses this instead of ARFMAG. */ | |
2074 | ||
2075 | #define ARFZMAG "Z\012" | |
2076 | ||
2077 | /* Read an archive header. This is like the standard routine, but it | |
2078 | also accepts ARFZMAG. */ | |
2079 | ||
2080 | static PTR | |
2081 | alpha_ecoff_read_ar_hdr (abfd) | |
2082 | bfd *abfd; | |
2083 | { | |
2084 | struct areltdata *ret; | |
2085 | struct ar_hdr *h; | |
2086 | ||
2087 | ret = (struct areltdata *) _bfd_generic_read_ar_hdr_mag (abfd, ARFZMAG); | |
2088 | if (ret == NULL) | |
2089 | return NULL; | |
2090 | ||
2091 | h = (struct ar_hdr *) ret->arch_header; | |
2092 | if (strncmp (h->ar_fmag, ARFZMAG, 2) == 0) | |
2093 | { | |
2094 | bfd_byte ab[8]; | |
2095 | ||
2096 | /* This is a compressed file. We must set the size correctly. | |
2097 | The size is the eight bytes after the dummy file header. */ | |
dc810e39 AM |
2098 | if (bfd_seek (abfd, (file_ptr) FILHSZ, SEEK_CUR) != 0 |
2099 | || bfd_bread (ab, (bfd_size_type) 8, abfd) != 8 | |
2100 | || bfd_seek (abfd, (file_ptr) (- (FILHSZ + 8)), SEEK_CUR) != 0) | |
252b5132 RH |
2101 | return NULL; |
2102 | ||
dc810e39 | 2103 | ret->parsed_size = H_GET_64 (abfd, ab); |
252b5132 RH |
2104 | } |
2105 | ||
2106 | return (PTR) ret; | |
2107 | } | |
2108 | ||
2109 | /* Get an archive element at a specified file position. This is where | |
2110 | we uncompress the archive element if necessary. */ | |
2111 | ||
2112 | static bfd * | |
2113 | alpha_ecoff_get_elt_at_filepos (archive, filepos) | |
2114 | bfd *archive; | |
2115 | file_ptr filepos; | |
2116 | { | |
2117 | bfd *nbfd = NULL; | |
2118 | struct areltdata *tdata; | |
2119 | struct ar_hdr *hdr; | |
2120 | bfd_byte ab[8]; | |
2121 | bfd_size_type size; | |
2122 | bfd_byte *buf, *p; | |
2123 | struct bfd_in_memory *bim; | |
2124 | ||
493152cb | 2125 | buf = NULL; |
252b5132 RH |
2126 | nbfd = _bfd_get_elt_at_filepos (archive, filepos); |
2127 | if (nbfd == NULL) | |
2128 | goto error_return; | |
2129 | ||
2130 | if ((nbfd->flags & BFD_IN_MEMORY) != 0) | |
2131 | { | |
2132 | /* We have already expanded this BFD. */ | |
2133 | return nbfd; | |
2134 | } | |
2135 | ||
2136 | tdata = (struct areltdata *) nbfd->arelt_data; | |
2137 | hdr = (struct ar_hdr *) tdata->arch_header; | |
2138 | if (strncmp (hdr->ar_fmag, ARFZMAG, 2) != 0) | |
2139 | return nbfd; | |
2140 | ||
2141 | /* We must uncompress this element. We do this by copying it into a | |
dc810e39 | 2142 | memory buffer, and making bfd_bread and bfd_seek use that buffer. |
252b5132 RH |
2143 | This can use a lot of memory, but it's simpler than getting a |
2144 | temporary file, making that work with the file descriptor caching | |
2145 | code, and making sure that it is deleted at all appropriate | |
2146 | times. It can be changed if it ever becomes important. */ | |
2147 | ||
2148 | /* The compressed file starts with a dummy ECOFF file header. */ | |
dc810e39 | 2149 | if (bfd_seek (nbfd, (file_ptr) FILHSZ, SEEK_SET) != 0) |
252b5132 RH |
2150 | goto error_return; |
2151 | ||
2152 | /* The next eight bytes are the real file size. */ | |
dc810e39 | 2153 | if (bfd_bread (ab, (bfd_size_type) 8, nbfd) != 8) |
252b5132 | 2154 | goto error_return; |
dc810e39 | 2155 | size = H_GET_64 (nbfd, ab); |
252b5132 | 2156 | |
493152cb | 2157 | if (size != 0) |
252b5132 RH |
2158 | { |
2159 | bfd_size_type left; | |
2160 | bfd_byte dict[4096]; | |
2161 | unsigned int h; | |
2162 | bfd_byte b; | |
2163 | ||
493152cb | 2164 | buf = (bfd_byte *) bfd_malloc (size); |
252b5132 RH |
2165 | if (buf == NULL) |
2166 | goto error_return; | |
2167 | p = buf; | |
2168 | ||
2169 | left = size; | |
2170 | ||
346ceb11 | 2171 | /* I don't know what the next eight bytes are for. */ |
dc810e39 | 2172 | if (bfd_bread (ab, (bfd_size_type) 8, nbfd) != 8) |
252b5132 RH |
2173 | goto error_return; |
2174 | ||
2175 | /* This is the uncompression algorithm. It's a simple | |
2176 | dictionary based scheme in which each character is predicted | |
2177 | by a hash of the previous three characters. A control byte | |
2178 | indicates whether the character is predicted or whether it | |
2179 | appears in the input stream; each control byte manages the | |
2180 | next eight bytes in the output stream. */ | |
2181 | memset (dict, 0, sizeof dict); | |
2182 | h = 0; | |
dc810e39 | 2183 | while (bfd_bread (&b, (bfd_size_type) 1, nbfd) == 1) |
252b5132 RH |
2184 | { |
2185 | unsigned int i; | |
2186 | ||
2187 | for (i = 0; i < 8; i++, b >>= 1) | |
2188 | { | |
2189 | bfd_byte n; | |
2190 | ||
2191 | if ((b & 1) == 0) | |
2192 | n = dict[h]; | |
2193 | else | |
2194 | { | |
dc810e39 | 2195 | if (! bfd_bread (&n, (bfd_size_type) 1, nbfd)) |
252b5132 RH |
2196 | goto error_return; |
2197 | dict[h] = n; | |
2198 | } | |
2199 | ||
2200 | *p++ = n; | |
2201 | ||
2202 | --left; | |
2203 | if (left == 0) | |
2204 | break; | |
2205 | ||
2206 | h <<= 4; | |
2207 | h ^= n; | |
2208 | h &= sizeof dict - 1; | |
2209 | } | |
2210 | ||
2211 | if (left == 0) | |
2212 | break; | |
2213 | } | |
2214 | } | |
2215 | ||
2216 | /* Now the uncompressed file contents are in buf. */ | |
2217 | bim = ((struct bfd_in_memory *) | |
493152cb | 2218 | bfd_malloc ((bfd_size_type) sizeof (struct bfd_in_memory))); |
252b5132 RH |
2219 | if (bim == NULL) |
2220 | goto error_return; | |
2221 | bim->size = size; | |
2222 | bim->buffer = buf; | |
2223 | ||
b34976b6 | 2224 | nbfd->mtime_set = TRUE; |
252b5132 RH |
2225 | nbfd->mtime = strtol (hdr->ar_date, (char **) NULL, 10); |
2226 | ||
2227 | nbfd->flags |= BFD_IN_MEMORY; | |
2228 | nbfd->iostream = (PTR) bim; | |
65077aa8 TG |
2229 | nbfd->iovec = &_bfd_memory_iovec; |
2230 | nbfd->origin = 0; | |
252b5132 RH |
2231 | BFD_ASSERT (! nbfd->cacheable); |
2232 | ||
2233 | return nbfd; | |
2234 | ||
2235 | error_return: | |
493152cb AM |
2236 | if (buf != NULL) |
2237 | free (buf); | |
252b5132 RH |
2238 | if (nbfd != NULL) |
2239 | bfd_close (nbfd); | |
346ceb11 | 2240 | return NULL; |
252b5132 RH |
2241 | } |
2242 | ||
2243 | /* Open the next archived file. */ | |
2244 | ||
2245 | static bfd * | |
2246 | alpha_ecoff_openr_next_archived_file (archive, last_file) | |
2247 | bfd *archive; | |
2248 | bfd *last_file; | |
2249 | { | |
2250 | file_ptr filestart; | |
2251 | ||
2252 | if (last_file == NULL) | |
2253 | filestart = bfd_ardata (archive)->first_file_filepos; | |
2254 | else | |
2255 | { | |
2256 | struct areltdata *t; | |
2257 | struct ar_hdr *h; | |
2258 | bfd_size_type size; | |
2259 | ||
2260 | /* We can't use arelt_size here, because that uses parsed_size, | |
2261 | which is the uncompressed size. We need the compressed size. */ | |
2262 | t = (struct areltdata *) last_file->arelt_data; | |
2263 | h = (struct ar_hdr *) t->arch_header; | |
2264 | size = strtol (h->ar_size, (char **) NULL, 10); | |
2265 | ||
2266 | /* Pad to an even boundary... | |
2267 | Note that last_file->origin can be odd in the case of | |
346ceb11 | 2268 | BSD-4.4-style element with a long odd size. */ |
65077aa8 | 2269 | filestart = last_file->proxy_origin + size; |
252b5132 RH |
2270 | filestart += filestart % 2; |
2271 | } | |
2272 | ||
2273 | return alpha_ecoff_get_elt_at_filepos (archive, filestart); | |
2274 | } | |
2275 | ||
2276 | /* Open the archive file given an index into the armap. */ | |
2277 | ||
2278 | static bfd * | |
91d6fa6a | 2279 | alpha_ecoff_get_elt_at_index (bfd *abfd, symindex sym_index) |
252b5132 RH |
2280 | { |
2281 | carsym *entry; | |
2282 | ||
91d6fa6a | 2283 | entry = bfd_ardata (abfd)->symdefs + sym_index; |
252b5132 RH |
2284 | return alpha_ecoff_get_elt_at_filepos (abfd, entry->file_offset); |
2285 | } | |
2286 | \f | |
2287 | /* This is the ECOFF backend structure. The backend field of the | |
2288 | target vector points to this. */ | |
2289 | ||
2290 | static const struct ecoff_backend_data alpha_ecoff_backend_data = | |
2291 | { | |
2292 | /* COFF backend structure. */ | |
2293 | { | |
2294 | (void (*) PARAMS ((bfd *,PTR,int,int,int,int,PTR))) bfd_void, /* aux_in */ | |
2295 | (void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_in */ | |
2296 | (void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_in */ | |
2297 | (unsigned (*) PARAMS ((bfd *,PTR,int,int,int,int,PTR)))bfd_void,/*aux_out*/ | |
2298 | (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_out */ | |
2299 | (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_out */ | |
2300 | (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* reloc_out */ | |
2301 | alpha_ecoff_swap_filehdr_out, alpha_ecoff_swap_aouthdr_out, | |
2302 | alpha_ecoff_swap_scnhdr_out, | |
88183869 DK |
2303 | FILHSZ, AOUTSZ, SCNHSZ, 0, 0, 0, 0, FILNMLEN, TRUE, |
2304 | ECOFF_NO_LONG_SECTION_NAMES, 4, FALSE, 2, | |
252b5132 RH |
2305 | alpha_ecoff_swap_filehdr_in, alpha_ecoff_swap_aouthdr_in, |
2306 | alpha_ecoff_swap_scnhdr_in, NULL, | |
2307 | alpha_ecoff_bad_format_hook, _bfd_ecoff_set_arch_mach_hook, | |
2308 | alpha_ecoff_mkobject_hook, _bfd_ecoff_styp_to_sec_flags, | |
2309 | _bfd_ecoff_set_alignment_hook, _bfd_ecoff_slurp_symbol_table, | |
7b50b349 | 2310 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
2b5c217d | 2311 | NULL, NULL, NULL, NULL |
252b5132 RH |
2312 | }, |
2313 | /* Supported architecture. */ | |
2314 | bfd_arch_alpha, | |
2315 | /* Initial portion of armap string. */ | |
2316 | "________64", | |
2317 | /* The page boundary used to align sections in a demand-paged | |
2318 | executable file. E.g., 0x1000. */ | |
2319 | 0x2000, | |
b34976b6 AM |
2320 | /* TRUE if the .rdata section is part of the text segment, as on the |
2321 | Alpha. FALSE if .rdata is part of the data segment, as on the | |
252b5132 | 2322 | MIPS. */ |
b34976b6 | 2323 | TRUE, |
252b5132 RH |
2324 | /* Bitsize of constructor entries. */ |
2325 | 64, | |
2326 | /* Reloc to use for constructor entries. */ | |
2327 | &alpha_howto_table[ALPHA_R_REFQUAD], | |
2328 | { | |
2329 | /* Symbol table magic number. */ | |
2330 | magicSym2, | |
2331 | /* Alignment of debugging information. E.g., 4. */ | |
2332 | 8, | |
2333 | /* Sizes of external symbolic information. */ | |
2334 | sizeof (struct hdr_ext), | |
2335 | sizeof (struct dnr_ext), | |
2336 | sizeof (struct pdr_ext), | |
2337 | sizeof (struct sym_ext), | |
2338 | sizeof (struct opt_ext), | |
2339 | sizeof (struct fdr_ext), | |
2340 | sizeof (struct rfd_ext), | |
2341 | sizeof (struct ext_ext), | |
2342 | /* Functions to swap in external symbolic data. */ | |
2343 | ecoff_swap_hdr_in, | |
2344 | ecoff_swap_dnr_in, | |
2345 | ecoff_swap_pdr_in, | |
2346 | ecoff_swap_sym_in, | |
2347 | ecoff_swap_opt_in, | |
2348 | ecoff_swap_fdr_in, | |
2349 | ecoff_swap_rfd_in, | |
2350 | ecoff_swap_ext_in, | |
2351 | _bfd_ecoff_swap_tir_in, | |
2352 | _bfd_ecoff_swap_rndx_in, | |
2353 | /* Functions to swap out external symbolic data. */ | |
2354 | ecoff_swap_hdr_out, | |
2355 | ecoff_swap_dnr_out, | |
2356 | ecoff_swap_pdr_out, | |
2357 | ecoff_swap_sym_out, | |
2358 | ecoff_swap_opt_out, | |
2359 | ecoff_swap_fdr_out, | |
2360 | ecoff_swap_rfd_out, | |
2361 | ecoff_swap_ext_out, | |
2362 | _bfd_ecoff_swap_tir_out, | |
2363 | _bfd_ecoff_swap_rndx_out, | |
2364 | /* Function to read in symbolic data. */ | |
2365 | _bfd_ecoff_slurp_symbolic_info | |
2366 | }, | |
2367 | /* External reloc size. */ | |
2368 | RELSZ, | |
2369 | /* Reloc swapping functions. */ | |
2370 | alpha_ecoff_swap_reloc_in, | |
2371 | alpha_ecoff_swap_reloc_out, | |
2372 | /* Backend reloc tweaking. */ | |
2373 | alpha_adjust_reloc_in, | |
2374 | alpha_adjust_reloc_out, | |
2375 | /* Relocate section contents while linking. */ | |
2376 | alpha_relocate_section, | |
2377 | /* Do final adjustments to filehdr and aouthdr. */ | |
2378 | alpha_adjust_headers, | |
2379 | /* Read an element from an archive at a given file position. */ | |
2380 | alpha_ecoff_get_elt_at_filepos | |
2381 | }; | |
2382 | ||
2383 | /* Looking up a reloc type is Alpha specific. */ | |
2384 | #define _bfd_ecoff_bfd_reloc_type_lookup alpha_bfd_reloc_type_lookup | |
157090f7 AM |
2385 | #define _bfd_ecoff_bfd_reloc_name_lookup \ |
2386 | alpha_bfd_reloc_name_lookup | |
252b5132 RH |
2387 | |
2388 | /* So is getting relocated section contents. */ | |
2389 | #define _bfd_ecoff_bfd_get_relocated_section_contents \ | |
2390 | alpha_ecoff_get_relocated_section_contents | |
2391 | ||
2392 | /* Handling file windows is generic. */ | |
2393 | #define _bfd_ecoff_get_section_contents_in_window \ | |
2394 | _bfd_generic_get_section_contents_in_window | |
2395 | ||
ae17ab41 CM |
2396 | /* Input section flag lookup is generic. */ |
2397 | #define _bfd_ecoff_bfd_lookup_section_flags bfd_generic_lookup_section_flags | |
2398 | ||
252b5132 RH |
2399 | /* Relaxing sections is generic. */ |
2400 | #define _bfd_ecoff_bfd_relax_section bfd_generic_relax_section | |
2401 | #define _bfd_ecoff_bfd_gc_sections bfd_generic_gc_sections | |
8550eb6e | 2402 | #define _bfd_ecoff_bfd_merge_sections bfd_generic_merge_sections |
72adc230 | 2403 | #define _bfd_ecoff_bfd_is_group_section bfd_generic_is_group_section |
e61463e1 | 2404 | #define _bfd_ecoff_bfd_discard_group bfd_generic_discard_group |
082b7297 L |
2405 | #define _bfd_ecoff_section_already_linked \ |
2406 | _bfd_generic_section_already_linked | |
3023e3f6 | 2407 | #define _bfd_ecoff_bfd_define_common_symbol bfd_generic_define_common_symbol |
252b5132 RH |
2408 | |
2409 | const bfd_target ecoffalpha_little_vec = | |
2410 | { | |
2411 | "ecoff-littlealpha", /* name */ | |
2412 | bfd_target_ecoff_flavour, | |
2413 | BFD_ENDIAN_LITTLE, /* data byte order is little */ | |
2414 | BFD_ENDIAN_LITTLE, /* header byte order is little */ | |
2415 | ||
2416 | (HAS_RELOC | EXEC_P | /* object flags */ | |
2417 | HAS_LINENO | HAS_DEBUG | | |
2418 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), | |
2419 | ||
2420 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), | |
2421 | 0, /* leading underscore */ | |
2422 | ' ', /* ar_pad_char */ | |
2423 | 15, /* ar_max_namelen */ | |
0aabe54e | 2424 | 0, /* match priority. */ |
252b5132 RH |
2425 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
2426 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
2427 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ | |
2428 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
2429 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
2430 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ | |
2431 | ||
2432 | {_bfd_dummy_target, alpha_ecoff_object_p, /* bfd_check_format */ | |
66cd82b5 | 2433 | bfd_generic_archive_p, _bfd_dummy_target}, |
252b5132 RH |
2434 | {bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */ |
2435 | _bfd_generic_mkarchive, bfd_false}, | |
2436 | {bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */ | |
2437 | _bfd_write_archive_contents, bfd_false}, | |
2438 | ||
2439 | BFD_JUMP_TABLE_GENERIC (_bfd_ecoff), | |
2440 | BFD_JUMP_TABLE_COPY (_bfd_ecoff), | |
2441 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
2442 | BFD_JUMP_TABLE_ARCHIVE (alpha_ecoff), | |
2443 | BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff), | |
2444 | BFD_JUMP_TABLE_RELOCS (_bfd_ecoff), | |
2445 | BFD_JUMP_TABLE_WRITE (_bfd_ecoff), | |
2446 | BFD_JUMP_TABLE_LINK (_bfd_ecoff), | |
2447 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
2448 | ||
c3c89269 | 2449 | NULL, |
346ceb11 | 2450 | |
252b5132 RH |
2451 | (PTR) &alpha_ecoff_backend_data |
2452 | }; |