Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end for ALPHA Extended-Coff files. |
72adc230 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
2c3fc389 | 3 | 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011, 2012 |
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 | ||
2c3fc389 | 40 | |
252b5132 RH |
41 | \f |
42 | /* ECOFF has COFF sections, but the debugging information is stored in | |
43 | a completely different format. ECOFF targets use some of the | |
44 | swapping routines from coffswap.h, and some of the generic COFF | |
45 | routines in coffgen.c, but, unlike the real COFF targets, do not | |
46 | use coffcode.h itself. | |
47 | ||
48 | Get the generic COFF swapping routines, except for the reloc, | |
49 | symbol, and lineno ones. Give them ecoff names. Define some | |
50 | accessor macros for the large sizes used for Alpha ECOFF. */ | |
51 | ||
dc810e39 AM |
52 | #define GET_FILEHDR_SYMPTR H_GET_64 |
53 | #define PUT_FILEHDR_SYMPTR H_PUT_64 | |
54 | #define GET_AOUTHDR_TSIZE H_GET_64 | |
55 | #define PUT_AOUTHDR_TSIZE H_PUT_64 | |
56 | #define GET_AOUTHDR_DSIZE H_GET_64 | |
57 | #define PUT_AOUTHDR_DSIZE H_PUT_64 | |
58 | #define GET_AOUTHDR_BSIZE H_GET_64 | |
59 | #define PUT_AOUTHDR_BSIZE H_PUT_64 | |
60 | #define GET_AOUTHDR_ENTRY H_GET_64 | |
61 | #define PUT_AOUTHDR_ENTRY H_PUT_64 | |
62 | #define GET_AOUTHDR_TEXT_START H_GET_64 | |
63 | #define PUT_AOUTHDR_TEXT_START H_PUT_64 | |
64 | #define GET_AOUTHDR_DATA_START H_GET_64 | |
65 | #define PUT_AOUTHDR_DATA_START H_PUT_64 | |
66 | #define GET_SCNHDR_PADDR H_GET_64 | |
67 | #define PUT_SCNHDR_PADDR H_PUT_64 | |
68 | #define GET_SCNHDR_VADDR H_GET_64 | |
69 | #define PUT_SCNHDR_VADDR H_PUT_64 | |
70 | #define GET_SCNHDR_SIZE H_GET_64 | |
71 | #define PUT_SCNHDR_SIZE H_PUT_64 | |
72 | #define GET_SCNHDR_SCNPTR H_GET_64 | |
73 | #define PUT_SCNHDR_SCNPTR H_PUT_64 | |
74 | #define GET_SCNHDR_RELPTR H_GET_64 | |
75 | #define PUT_SCNHDR_RELPTR H_PUT_64 | |
76 | #define GET_SCNHDR_LNNOPTR H_GET_64 | |
77 | #define PUT_SCNHDR_LNNOPTR H_PUT_64 | |
252b5132 RH |
78 | |
79 | #define ALPHAECOFF | |
80 | ||
81 | #define NO_COFF_RELOCS | |
82 | #define NO_COFF_SYMBOLS | |
83 | #define NO_COFF_LINENOS | |
84 | #define coff_swap_filehdr_in alpha_ecoff_swap_filehdr_in | |
85 | #define coff_swap_filehdr_out alpha_ecoff_swap_filehdr_out | |
86 | #define coff_swap_aouthdr_in alpha_ecoff_swap_aouthdr_in | |
87 | #define coff_swap_aouthdr_out alpha_ecoff_swap_aouthdr_out | |
88 | #define coff_swap_scnhdr_in alpha_ecoff_swap_scnhdr_in | |
89 | #define coff_swap_scnhdr_out alpha_ecoff_swap_scnhdr_out | |
90 | #include "coffswap.h" | |
91 | ||
92 | /* Get the ECOFF swapping routines. */ | |
93 | #define ECOFF_64 | |
94 | #include "ecoffswap.h" | |
95 | \f | |
96 | /* How to process the various reloc types. */ | |
97 | ||
252b5132 | 98 | static bfd_reloc_status_type |
2c3fc389 NC |
99 | reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, |
100 | arelent *reloc ATTRIBUTE_UNUSED, | |
101 | asymbol *sym ATTRIBUTE_UNUSED, | |
102 | void * data ATTRIBUTE_UNUSED, | |
103 | asection *sec ATTRIBUTE_UNUSED, | |
104 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
105 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 RH |
106 | { |
107 | return bfd_reloc_ok; | |
108 | } | |
109 | ||
110 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
111 | from smaller values. Start with zero, widen, *then* decrement. */ | |
112 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
113 | ||
114 | static reloc_howto_type alpha_howto_table[] = | |
115 | { | |
116 | /* Reloc type 0 is ignored by itself. However, it appears after a | |
117 | GPDISP reloc to identify the location where the low order 16 bits | |
118 | of the gp register are loaded. */ | |
119 | HOWTO (ALPHA_R_IGNORE, /* type */ | |
120 | 0, /* rightshift */ | |
121 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
122 | 8, /* bitsize */ | |
b34976b6 | 123 | TRUE, /* pc_relative */ |
252b5132 RH |
124 | 0, /* bitpos */ |
125 | complain_overflow_dont, /* complain_on_overflow */ | |
126 | reloc_nil, /* special_function */ | |
127 | "IGNORE", /* name */ | |
b34976b6 | 128 | TRUE, /* partial_inplace */ |
252b5132 RH |
129 | 0, /* src_mask */ |
130 | 0, /* dst_mask */ | |
b34976b6 | 131 | TRUE), /* pcrel_offset */ |
252b5132 RH |
132 | |
133 | /* A 32 bit reference to a symbol. */ | |
134 | HOWTO (ALPHA_R_REFLONG, /* type */ | |
135 | 0, /* rightshift */ | |
136 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
137 | 32, /* bitsize */ | |
b34976b6 | 138 | FALSE, /* pc_relative */ |
252b5132 RH |
139 | 0, /* bitpos */ |
140 | complain_overflow_bitfield, /* complain_on_overflow */ | |
141 | 0, /* special_function */ | |
142 | "REFLONG", /* name */ | |
b34976b6 | 143 | TRUE, /* partial_inplace */ |
252b5132 RH |
144 | 0xffffffff, /* src_mask */ |
145 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 146 | FALSE), /* pcrel_offset */ |
252b5132 RH |
147 | |
148 | /* A 64 bit reference to a symbol. */ | |
149 | HOWTO (ALPHA_R_REFQUAD, /* type */ | |
150 | 0, /* rightshift */ | |
151 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
152 | 64, /* bitsize */ | |
b34976b6 | 153 | FALSE, /* pc_relative */ |
252b5132 RH |
154 | 0, /* bitpos */ |
155 | complain_overflow_bitfield, /* complain_on_overflow */ | |
156 | 0, /* special_function */ | |
157 | "REFQUAD", /* name */ | |
b34976b6 | 158 | TRUE, /* partial_inplace */ |
252b5132 RH |
159 | MINUS_ONE, /* src_mask */ |
160 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 161 | FALSE), /* pcrel_offset */ |
252b5132 RH |
162 | |
163 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
164 | that when the value is used the value of the gp register will be | |
165 | added in. */ | |
166 | HOWTO (ALPHA_R_GPREL32, /* type */ | |
167 | 0, /* rightshift */ | |
168 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
169 | 32, /* bitsize */ | |
b34976b6 | 170 | FALSE, /* pc_relative */ |
252b5132 RH |
171 | 0, /* bitpos */ |
172 | complain_overflow_bitfield, /* complain_on_overflow */ | |
173 | 0, /* special_function */ | |
174 | "GPREL32", /* name */ | |
b34976b6 | 175 | TRUE, /* partial_inplace */ |
252b5132 RH |
176 | 0xffffffff, /* src_mask */ |
177 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 178 | FALSE), /* pcrel_offset */ |
252b5132 RH |
179 | |
180 | /* Used for an instruction that refers to memory off the GP | |
181 | register. The offset is 16 bits of the 32 bit instruction. This | |
182 | reloc always seems to be against the .lita section. */ | |
183 | HOWTO (ALPHA_R_LITERAL, /* type */ | |
184 | 0, /* rightshift */ | |
185 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
186 | 16, /* bitsize */ | |
b34976b6 | 187 | FALSE, /* pc_relative */ |
252b5132 RH |
188 | 0, /* bitpos */ |
189 | complain_overflow_signed, /* complain_on_overflow */ | |
190 | 0, /* special_function */ | |
191 | "LITERAL", /* name */ | |
b34976b6 | 192 | TRUE, /* partial_inplace */ |
252b5132 RH |
193 | 0xffff, /* src_mask */ |
194 | 0xffff, /* dst_mask */ | |
b34976b6 | 195 | FALSE), /* pcrel_offset */ |
252b5132 RH |
196 | |
197 | /* This reloc only appears immediately following a LITERAL reloc. | |
198 | It identifies a use of the literal. It seems that the linker can | |
199 | use this to eliminate a portion of the .lita section. The symbol | |
200 | index is special: 1 means the literal address is in the base | |
201 | register of a memory format instruction; 2 means the literal | |
202 | address is in the byte offset register of a byte-manipulation | |
203 | instruction; 3 means the literal address is in the target | |
204 | register of a jsr instruction. This does not actually do any | |
205 | relocation. */ | |
206 | HOWTO (ALPHA_R_LITUSE, /* type */ | |
207 | 0, /* rightshift */ | |
208 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
209 | 32, /* bitsize */ | |
b34976b6 | 210 | FALSE, /* pc_relative */ |
252b5132 RH |
211 | 0, /* bitpos */ |
212 | complain_overflow_dont, /* complain_on_overflow */ | |
213 | reloc_nil, /* special_function */ | |
214 | "LITUSE", /* name */ | |
b34976b6 | 215 | FALSE, /* partial_inplace */ |
252b5132 RH |
216 | 0, /* src_mask */ |
217 | 0, /* dst_mask */ | |
b34976b6 | 218 | FALSE), /* pcrel_offset */ |
252b5132 RH |
219 | |
220 | /* Load the gp register. This is always used for a ldah instruction | |
221 | which loads the upper 16 bits of the gp register. The next reloc | |
222 | will be an IGNORE reloc which identifies the location of the lda | |
223 | instruction which loads the lower 16 bits. The symbol index of | |
224 | the GPDISP instruction appears to actually be the number of bytes | |
225 | between the ldah and lda instructions. This gives two different | |
226 | ways to determine where the lda instruction is; I don't know why | |
227 | both are used. The value to use for the relocation is the | |
228 | difference between the GP value and the current location; the | |
229 | load will always be done against a register holding the current | |
230 | address. */ | |
231 | HOWTO (ALPHA_R_GPDISP, /* type */ | |
232 | 16, /* rightshift */ | |
233 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
234 | 16, /* bitsize */ | |
b34976b6 | 235 | TRUE, /* pc_relative */ |
252b5132 RH |
236 | 0, /* bitpos */ |
237 | complain_overflow_dont, /* complain_on_overflow */ | |
238 | reloc_nil, /* special_function */ | |
239 | "GPDISP", /* name */ | |
b34976b6 | 240 | TRUE, /* partial_inplace */ |
252b5132 RH |
241 | 0xffff, /* src_mask */ |
242 | 0xffff, /* dst_mask */ | |
b34976b6 | 243 | TRUE), /* pcrel_offset */ |
252b5132 RH |
244 | |
245 | /* A 21 bit branch. The native assembler generates these for | |
246 | branches within the text segment, and also fills in the PC | |
247 | relative offset in the instruction. */ | |
248 | HOWTO (ALPHA_R_BRADDR, /* type */ | |
249 | 2, /* rightshift */ | |
250 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
251 | 21, /* bitsize */ | |
b34976b6 | 252 | TRUE, /* pc_relative */ |
252b5132 RH |
253 | 0, /* bitpos */ |
254 | complain_overflow_signed, /* complain_on_overflow */ | |
255 | 0, /* special_function */ | |
256 | "BRADDR", /* name */ | |
b34976b6 | 257 | TRUE, /* partial_inplace */ |
252b5132 RH |
258 | 0x1fffff, /* src_mask */ |
259 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 260 | FALSE), /* pcrel_offset */ |
252b5132 RH |
261 | |
262 | /* A hint for a jump to a register. */ | |
263 | HOWTO (ALPHA_R_HINT, /* type */ | |
264 | 2, /* rightshift */ | |
265 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
266 | 14, /* bitsize */ | |
b34976b6 | 267 | TRUE, /* pc_relative */ |
252b5132 RH |
268 | 0, /* bitpos */ |
269 | complain_overflow_dont, /* complain_on_overflow */ | |
270 | 0, /* special_function */ | |
271 | "HINT", /* name */ | |
b34976b6 | 272 | TRUE, /* partial_inplace */ |
252b5132 RH |
273 | 0x3fff, /* src_mask */ |
274 | 0x3fff, /* dst_mask */ | |
b34976b6 | 275 | FALSE), /* pcrel_offset */ |
252b5132 RH |
276 | |
277 | /* 16 bit PC relative offset. */ | |
278 | HOWTO (ALPHA_R_SREL16, /* type */ | |
279 | 0, /* rightshift */ | |
280 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
281 | 16, /* bitsize */ | |
b34976b6 | 282 | TRUE, /* pc_relative */ |
252b5132 RH |
283 | 0, /* bitpos */ |
284 | complain_overflow_signed, /* complain_on_overflow */ | |
285 | 0, /* special_function */ | |
286 | "SREL16", /* name */ | |
b34976b6 | 287 | TRUE, /* partial_inplace */ |
252b5132 RH |
288 | 0xffff, /* src_mask */ |
289 | 0xffff, /* dst_mask */ | |
b34976b6 | 290 | FALSE), /* pcrel_offset */ |
252b5132 RH |
291 | |
292 | /* 32 bit PC relative offset. */ | |
293 | HOWTO (ALPHA_R_SREL32, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 32, /* bitsize */ | |
b34976b6 | 297 | TRUE, /* pc_relative */ |
252b5132 RH |
298 | 0, /* bitpos */ |
299 | complain_overflow_signed, /* complain_on_overflow */ | |
300 | 0, /* special_function */ | |
301 | "SREL32", /* name */ | |
b34976b6 | 302 | TRUE, /* partial_inplace */ |
252b5132 RH |
303 | 0xffffffff, /* src_mask */ |
304 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 305 | FALSE), /* pcrel_offset */ |
252b5132 RH |
306 | |
307 | /* A 64 bit PC relative offset. */ | |
308 | HOWTO (ALPHA_R_SREL64, /* type */ | |
309 | 0, /* rightshift */ | |
310 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
311 | 64, /* bitsize */ | |
b34976b6 | 312 | TRUE, /* pc_relative */ |
252b5132 RH |
313 | 0, /* bitpos */ |
314 | complain_overflow_signed, /* complain_on_overflow */ | |
315 | 0, /* special_function */ | |
316 | "SREL64", /* name */ | |
b34976b6 | 317 | TRUE, /* partial_inplace */ |
252b5132 RH |
318 | MINUS_ONE, /* src_mask */ |
319 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 320 | FALSE), /* pcrel_offset */ |
252b5132 RH |
321 | |
322 | /* Push a value on the reloc evaluation stack. */ | |
323 | HOWTO (ALPHA_R_OP_PUSH, /* type */ | |
324 | 0, /* rightshift */ | |
325 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
326 | 0, /* bitsize */ | |
b34976b6 | 327 | FALSE, /* pc_relative */ |
252b5132 RH |
328 | 0, /* bitpos */ |
329 | complain_overflow_dont, /* complain_on_overflow */ | |
330 | 0, /* special_function */ | |
331 | "OP_PUSH", /* name */ | |
b34976b6 | 332 | FALSE, /* partial_inplace */ |
252b5132 RH |
333 | 0, /* src_mask */ |
334 | 0, /* dst_mask */ | |
b34976b6 | 335 | FALSE), /* pcrel_offset */ |
252b5132 RH |
336 | |
337 | /* Store the value from the stack at the given address. Store it in | |
338 | a bitfield of size r_size starting at bit position r_offset. */ | |
339 | HOWTO (ALPHA_R_OP_STORE, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 64, /* bitsize */ | |
b34976b6 | 343 | FALSE, /* pc_relative */ |
252b5132 RH |
344 | 0, /* bitpos */ |
345 | complain_overflow_dont, /* complain_on_overflow */ | |
346 | 0, /* special_function */ | |
347 | "OP_STORE", /* name */ | |
b34976b6 | 348 | FALSE, /* partial_inplace */ |
252b5132 RH |
349 | 0, /* src_mask */ |
350 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 351 | FALSE), /* pcrel_offset */ |
252b5132 RH |
352 | |
353 | /* Subtract the reloc address from the value on the top of the | |
354 | relocation stack. */ | |
355 | HOWTO (ALPHA_R_OP_PSUB, /* type */ | |
356 | 0, /* rightshift */ | |
357 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
358 | 0, /* bitsize */ | |
b34976b6 | 359 | FALSE, /* pc_relative */ |
252b5132 RH |
360 | 0, /* bitpos */ |
361 | complain_overflow_dont, /* complain_on_overflow */ | |
362 | 0, /* special_function */ | |
363 | "OP_PSUB", /* name */ | |
b34976b6 | 364 | FALSE, /* partial_inplace */ |
252b5132 RH |
365 | 0, /* src_mask */ |
366 | 0, /* dst_mask */ | |
b34976b6 | 367 | FALSE), /* pcrel_offset */ |
252b5132 RH |
368 | |
369 | /* Shift the value on the top of the relocation stack right by the | |
370 | given value. */ | |
371 | HOWTO (ALPHA_R_OP_PRSHIFT, /* type */ | |
372 | 0, /* rightshift */ | |
373 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
374 | 0, /* bitsize */ | |
b34976b6 | 375 | FALSE, /* pc_relative */ |
252b5132 RH |
376 | 0, /* bitpos */ |
377 | complain_overflow_dont, /* complain_on_overflow */ | |
378 | 0, /* special_function */ | |
379 | "OP_PRSHIFT", /* name */ | |
b34976b6 | 380 | FALSE, /* partial_inplace */ |
252b5132 RH |
381 | 0, /* src_mask */ |
382 | 0, /* dst_mask */ | |
b34976b6 | 383 | FALSE), /* pcrel_offset */ |
252b5132 RH |
384 | |
385 | /* Adjust the GP value for a new range in the object file. */ | |
386 | HOWTO (ALPHA_R_GPVALUE, /* type */ | |
387 | 0, /* rightshift */ | |
388 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 0, /* bitsize */ | |
b34976b6 | 390 | FALSE, /* pc_relative */ |
252b5132 RH |
391 | 0, /* bitpos */ |
392 | complain_overflow_dont, /* complain_on_overflow */ | |
393 | 0, /* special_function */ | |
394 | "GPVALUE", /* name */ | |
b34976b6 | 395 | FALSE, /* partial_inplace */ |
252b5132 RH |
396 | 0, /* src_mask */ |
397 | 0, /* dst_mask */ | |
b34976b6 | 398 | FALSE) /* pcrel_offset */ |
252b5132 RH |
399 | }; |
400 | \f | |
401 | /* Recognize an Alpha ECOFF file. */ | |
402 | ||
403 | static const bfd_target * | |
2c3fc389 | 404 | alpha_ecoff_object_p (bfd *abfd) |
252b5132 RH |
405 | { |
406 | static const bfd_target *ret; | |
407 | ||
408 | ret = coff_object_p (abfd); | |
409 | ||
410 | if (ret != NULL) | |
411 | { | |
412 | asection *sec; | |
413 | ||
414 | /* Alpha ECOFF has a .pdata section. The lnnoptr field of the | |
415 | .pdata section is the number of entries it contains. Each | |
416 | entry takes up 8 bytes. The number of entries is required | |
417 | since the section is aligned to a 16 byte boundary. When we | |
418 | link .pdata sections together, we do not want to include the | |
419 | alignment bytes. We handle this on input by faking the size | |
420 | of the .pdata section to remove the unwanted alignment bytes. | |
421 | On output we will set the lnnoptr field and force the | |
422 | alignment. */ | |
423 | sec = bfd_get_section_by_name (abfd, _PDATA); | |
424 | if (sec != (asection *) NULL) | |
425 | { | |
426 | bfd_size_type size; | |
427 | ||
428 | size = sec->line_filepos * 8; | |
eea6121a AM |
429 | BFD_ASSERT (size == sec->size |
430 | || size + 8 == sec->size); | |
252b5132 RH |
431 | if (! bfd_set_section_size (abfd, sec, size)) |
432 | return NULL; | |
433 | } | |
434 | } | |
435 | ||
436 | return ret; | |
437 | } | |
438 | ||
439 | /* See whether the magic number matches. */ | |
440 | ||
b34976b6 | 441 | static bfd_boolean |
2c3fc389 NC |
442 | alpha_ecoff_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, |
443 | void * filehdr) | |
252b5132 RH |
444 | { |
445 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; | |
446 | ||
15ac1d4f NC |
447 | if (! ALPHA_ECOFF_BADMAG (*internal_f)) |
448 | return TRUE; | |
252b5132 | 449 | |
15ac1d4f NC |
450 | if (ALPHA_ECOFF_COMPRESSEDMAG (*internal_f)) |
451 | (*_bfd_error_handler) | |
452 | (_("%B: Cannot handle compressed Alpha binaries.\n" | |
453 | " Use compiler flags, or objZ, to generate uncompressed binaries."), | |
454 | abfd); | |
455 | ||
456 | return FALSE; | |
252b5132 RH |
457 | } |
458 | ||
459 | /* This is a hook called by coff_real_object_p to create any backend | |
460 | specific information. */ | |
461 | ||
2c3fc389 NC |
462 | static void * |
463 | alpha_ecoff_mkobject_hook (bfd *abfd, void * filehdr, void * aouthdr) | |
252b5132 | 464 | { |
2c3fc389 | 465 | void * ecoff; |
252b5132 RH |
466 | |
467 | ecoff = _bfd_ecoff_mkobject_hook (abfd, filehdr, aouthdr); | |
468 | ||
469 | if (ecoff != NULL) | |
470 | { | |
471 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; | |
472 | ||
473 | /* Set additional BFD flags according to the object type from the | |
474 | machine specific file header flags. */ | |
475 | switch (internal_f->f_flags & F_ALPHA_OBJECT_TYPE_MASK) | |
476 | { | |
477 | case F_ALPHA_SHARABLE: | |
478 | abfd->flags |= DYNAMIC; | |
479 | break; | |
480 | case F_ALPHA_CALL_SHARED: | |
481 | /* Always executable if using shared libraries as the run time | |
482 | loader might resolve undefined references. */ | |
483 | abfd->flags |= (DYNAMIC | EXEC_P); | |
484 | break; | |
485 | } | |
486 | } | |
487 | return ecoff; | |
488 | } | |
489 | \f | |
490 | /* Reloc handling. */ | |
491 | ||
492 | /* Swap a reloc in. */ | |
493 | ||
494 | static void | |
2c3fc389 NC |
495 | alpha_ecoff_swap_reloc_in (bfd *abfd, |
496 | void * ext_ptr, | |
497 | struct internal_reloc *intern) | |
252b5132 RH |
498 | { |
499 | const RELOC *ext = (RELOC *) ext_ptr; | |
500 | ||
dc810e39 AM |
501 | intern->r_vaddr = H_GET_64 (abfd, ext->r_vaddr); |
502 | intern->r_symndx = H_GET_32 (abfd, ext->r_symndx); | |
252b5132 RH |
503 | |
504 | BFD_ASSERT (bfd_header_little_endian (abfd)); | |
505 | ||
506 | intern->r_type = ((ext->r_bits[0] & RELOC_BITS0_TYPE_LITTLE) | |
507 | >> RELOC_BITS0_TYPE_SH_LITTLE); | |
508 | intern->r_extern = (ext->r_bits[1] & RELOC_BITS1_EXTERN_LITTLE) != 0; | |
509 | intern->r_offset = ((ext->r_bits[1] & RELOC_BITS1_OFFSET_LITTLE) | |
510 | >> RELOC_BITS1_OFFSET_SH_LITTLE); | |
511 | /* Ignored the reserved bits. */ | |
512 | intern->r_size = ((ext->r_bits[3] & RELOC_BITS3_SIZE_LITTLE) | |
513 | >> RELOC_BITS3_SIZE_SH_LITTLE); | |
514 | ||
515 | if (intern->r_type == ALPHA_R_LITUSE | |
516 | || intern->r_type == ALPHA_R_GPDISP) | |
517 | { | |
518 | /* Handle the LITUSE and GPDISP relocs specially. Its symndx | |
519 | value is not actually a symbol index, but is instead a | |
520 | special code. We put the code in the r_size field, and | |
521 | clobber the symndx. */ | |
522 | if (intern->r_size != 0) | |
523 | abort (); | |
524 | intern->r_size = intern->r_symndx; | |
525 | intern->r_symndx = RELOC_SECTION_NONE; | |
526 | } | |
527 | else if (intern->r_type == ALPHA_R_IGNORE) | |
528 | { | |
529 | /* The IGNORE reloc generally follows a GPDISP reloc, and is | |
530 | against the .lita section. The section is irrelevant. */ | |
531 | if (! intern->r_extern && | |
532 | intern->r_symndx == RELOC_SECTION_ABS) | |
533 | abort (); | |
534 | if (! intern->r_extern && intern->r_symndx == RELOC_SECTION_LITA) | |
535 | intern->r_symndx = RELOC_SECTION_ABS; | |
536 | } | |
537 | } | |
538 | ||
539 | /* Swap a reloc out. */ | |
540 | ||
541 | static void | |
2c3fc389 NC |
542 | alpha_ecoff_swap_reloc_out (bfd *abfd, |
543 | const struct internal_reloc *intern, | |
544 | void * dst) | |
252b5132 RH |
545 | { |
546 | RELOC *ext = (RELOC *) dst; | |
547 | long symndx; | |
548 | unsigned char size; | |
549 | ||
550 | /* Undo the hackery done in swap_reloc_in. */ | |
551 | if (intern->r_type == ALPHA_R_LITUSE | |
552 | || intern->r_type == ALPHA_R_GPDISP) | |
553 | { | |
554 | symndx = intern->r_size; | |
555 | size = 0; | |
556 | } | |
557 | else if (intern->r_type == ALPHA_R_IGNORE | |
558 | && ! intern->r_extern | |
559 | && intern->r_symndx == RELOC_SECTION_ABS) | |
560 | { | |
561 | symndx = RELOC_SECTION_LITA; | |
562 | size = intern->r_size; | |
563 | } | |
564 | else | |
565 | { | |
566 | symndx = intern->r_symndx; | |
567 | size = intern->r_size; | |
568 | } | |
569 | ||
15ac1d4f | 570 | /* XXX FIXME: The maximum symndx value used to be 14 but this |
bfaaa3c2 | 571 | fails with object files produced by DEC's C++ compiler. |
15ac1d4f | 572 | Where does the value 14 (or 15) come from anyway ? */ |
252b5132 | 573 | BFD_ASSERT (intern->r_extern |
15ac1d4f | 574 | || (intern->r_symndx >= 0 && intern->r_symndx <= 15)); |
252b5132 | 575 | |
dc810e39 AM |
576 | H_PUT_64 (abfd, intern->r_vaddr, ext->r_vaddr); |
577 | H_PUT_32 (abfd, symndx, ext->r_symndx); | |
252b5132 RH |
578 | |
579 | BFD_ASSERT (bfd_header_little_endian (abfd)); | |
580 | ||
581 | ext->r_bits[0] = ((intern->r_type << RELOC_BITS0_TYPE_SH_LITTLE) | |
582 | & RELOC_BITS0_TYPE_LITTLE); | |
583 | ext->r_bits[1] = ((intern->r_extern ? RELOC_BITS1_EXTERN_LITTLE : 0) | |
584 | | ((intern->r_offset << RELOC_BITS1_OFFSET_SH_LITTLE) | |
585 | & RELOC_BITS1_OFFSET_LITTLE)); | |
586 | ext->r_bits[2] = 0; | |
587 | ext->r_bits[3] = ((size << RELOC_BITS3_SIZE_SH_LITTLE) | |
588 | & RELOC_BITS3_SIZE_LITTLE); | |
589 | } | |
590 | ||
591 | /* Finish canonicalizing a reloc. Part of this is generic to all | |
592 | ECOFF targets, and that part is in ecoff.c. The rest is done in | |
593 | this backend routine. It must fill in the howto field. */ | |
594 | ||
595 | static void | |
2c3fc389 NC |
596 | alpha_adjust_reloc_in (bfd *abfd, |
597 | const struct internal_reloc *intern, | |
598 | arelent *rptr) | |
252b5132 RH |
599 | { |
600 | if (intern->r_type > ALPHA_R_GPVALUE) | |
0adc9281 NC |
601 | { |
602 | (*_bfd_error_handler) | |
603 | (_("%B: unknown/unsupported relocation type %d"), | |
604 | abfd, intern->r_type); | |
605 | bfd_set_error (bfd_error_bad_value); | |
606 | rptr->addend = 0; | |
607 | rptr->howto = NULL; | |
608 | return; | |
609 | } | |
252b5132 RH |
610 | |
611 | switch (intern->r_type) | |
612 | { | |
613 | case ALPHA_R_BRADDR: | |
614 | case ALPHA_R_SREL16: | |
615 | case ALPHA_R_SREL32: | |
616 | case ALPHA_R_SREL64: | |
617 | /* This relocs appear to be fully resolved when they are against | |
618 | internal symbols. Against external symbols, BRADDR at least | |
619 | appears to be resolved against the next instruction. */ | |
620 | if (! intern->r_extern) | |
621 | rptr->addend = 0; | |
622 | else | |
623 | rptr->addend = - (intern->r_vaddr + 4); | |
624 | break; | |
625 | ||
626 | case ALPHA_R_GPREL32: | |
627 | case ALPHA_R_LITERAL: | |
628 | /* Copy the gp value for this object file into the addend, to | |
629 | ensure that we are not confused by the linker. */ | |
630 | if (! intern->r_extern) | |
631 | rptr->addend += ecoff_data (abfd)->gp; | |
632 | break; | |
633 | ||
634 | case ALPHA_R_LITUSE: | |
635 | case ALPHA_R_GPDISP: | |
636 | /* The LITUSE and GPDISP relocs do not use a symbol, or an | |
637 | addend, but they do use a special code. Put this code in the | |
638 | addend field. */ | |
639 | rptr->addend = intern->r_size; | |
640 | break; | |
641 | ||
642 | case ALPHA_R_OP_STORE: | |
643 | /* The STORE reloc needs the size and offset fields. We store | |
644 | them in the addend. */ | |
ca724bf2 | 645 | BFD_ASSERT (intern->r_offset <= 256); |
252b5132 RH |
646 | rptr->addend = (intern->r_offset << 8) + intern->r_size; |
647 | break; | |
648 | ||
649 | case ALPHA_R_OP_PUSH: | |
650 | case ALPHA_R_OP_PSUB: | |
651 | case ALPHA_R_OP_PRSHIFT: | |
652 | /* The PUSH, PSUB and PRSHIFT relocs do not actually use an | |
653 | address. I believe that the address supplied is really an | |
654 | addend. */ | |
655 | rptr->addend = intern->r_vaddr; | |
656 | break; | |
657 | ||
658 | case ALPHA_R_GPVALUE: | |
659 | /* Set the addend field to the new GP value. */ | |
660 | rptr->addend = intern->r_symndx + ecoff_data (abfd)->gp; | |
661 | break; | |
662 | ||
663 | case ALPHA_R_IGNORE: | |
664 | /* If the type is ALPHA_R_IGNORE, make sure this is a reference | |
665 | to the absolute section so that the reloc is ignored. For | |
666 | some reason the address of this reloc type is not adjusted by | |
667 | the section vma. We record the gp value for this object file | |
668 | here, for convenience when doing the GPDISP relocation. */ | |
669 | rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
670 | rptr->address = intern->r_vaddr; | |
671 | rptr->addend = ecoff_data (abfd)->gp; | |
672 | break; | |
673 | ||
674 | default: | |
675 | break; | |
676 | } | |
677 | ||
678 | rptr->howto = &alpha_howto_table[intern->r_type]; | |
679 | } | |
680 | ||
681 | /* When writing out a reloc we need to pull some values back out of | |
682 | the addend field into the reloc. This is roughly the reverse of | |
683 | alpha_adjust_reloc_in, except that there are several changes we do | |
684 | not need to undo. */ | |
685 | ||
686 | static void | |
2c3fc389 NC |
687 | alpha_adjust_reloc_out (bfd *abfd ATTRIBUTE_UNUSED, |
688 | const arelent *rel, | |
689 | struct internal_reloc *intern) | |
252b5132 RH |
690 | { |
691 | switch (intern->r_type) | |
692 | { | |
693 | case ALPHA_R_LITUSE: | |
694 | case ALPHA_R_GPDISP: | |
695 | intern->r_size = rel->addend; | |
696 | break; | |
697 | ||
698 | case ALPHA_R_OP_STORE: | |
699 | intern->r_size = rel->addend & 0xff; | |
700 | intern->r_offset = (rel->addend >> 8) & 0xff; | |
701 | break; | |
702 | ||
703 | case ALPHA_R_OP_PUSH: | |
704 | case ALPHA_R_OP_PSUB: | |
705 | case ALPHA_R_OP_PRSHIFT: | |
706 | intern->r_vaddr = rel->addend; | |
707 | break; | |
708 | ||
709 | case ALPHA_R_IGNORE: | |
710 | intern->r_vaddr = rel->address; | |
711 | break; | |
712 | ||
713 | default: | |
714 | break; | |
715 | } | |
716 | } | |
717 | ||
718 | /* The size of the stack for the relocation evaluator. */ | |
719 | #define RELOC_STACKSIZE (10) | |
720 | ||
721 | /* Alpha ECOFF relocs have a built in expression evaluator as well as | |
722 | other interdependencies. Rather than use a bunch of special | |
723 | functions and global variables, we use a single routine to do all | |
724 | the relocation for a section. I haven't yet worked out how the | |
725 | assembler is going to handle this. */ | |
726 | ||
727 | static bfd_byte * | |
2c3fc389 NC |
728 | alpha_ecoff_get_relocated_section_contents (bfd *abfd, |
729 | struct bfd_link_info *link_info, | |
730 | struct bfd_link_order *link_order, | |
731 | bfd_byte *data, | |
732 | bfd_boolean relocatable, | |
733 | asymbol **symbols) | |
252b5132 RH |
734 | { |
735 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
736 | asection *input_section = link_order->u.indirect.section; | |
737 | long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
738 | arelent **reloc_vector = NULL; | |
739 | long reloc_count; | |
1049f94e | 740 | bfd *output_bfd = relocatable ? abfd : (bfd *) NULL; |
252b5132 | 741 | bfd_vma gp; |
eea6121a | 742 | bfd_size_type sz; |
b34976b6 | 743 | bfd_boolean gp_undefined; |
252b5132 RH |
744 | bfd_vma stack[RELOC_STACKSIZE]; |
745 | int tos = 0; | |
746 | ||
747 | if (reloc_size < 0) | |
748 | goto error_return; | |
dc810e39 | 749 | reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size); |
252b5132 RH |
750 | if (reloc_vector == NULL && reloc_size != 0) |
751 | goto error_return; | |
752 | ||
eea6121a AM |
753 | sz = input_section->rawsize ? input_section->rawsize : input_section->size; |
754 | if (! bfd_get_section_contents (input_bfd, input_section, data, 0, sz)) | |
252b5132 RH |
755 | goto error_return; |
756 | ||
252b5132 RH |
757 | reloc_count = bfd_canonicalize_reloc (input_bfd, input_section, |
758 | reloc_vector, symbols); | |
759 | if (reloc_count < 0) | |
760 | goto error_return; | |
761 | if (reloc_count == 0) | |
762 | goto successful_return; | |
763 | ||
764 | /* Get the GP value for the output BFD. */ | |
b34976b6 | 765 | gp_undefined = FALSE; |
252b5132 RH |
766 | gp = _bfd_get_gp_value (abfd); |
767 | if (gp == 0) | |
768 | { | |
1049f94e | 769 | if (relocatable) |
252b5132 RH |
770 | { |
771 | asection *sec; | |
772 | bfd_vma lo; | |
773 | ||
774 | /* Make up a value. */ | |
775 | lo = (bfd_vma) -1; | |
776 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
777 | { | |
778 | if (sec->vma < lo | |
779 | && (strcmp (sec->name, ".sbss") == 0 | |
780 | || strcmp (sec->name, ".sdata") == 0 | |
781 | || strcmp (sec->name, ".lit4") == 0 | |
782 | || strcmp (sec->name, ".lit8") == 0 | |
783 | || strcmp (sec->name, ".lita") == 0)) | |
784 | lo = sec->vma; | |
785 | } | |
786 | gp = lo + 0x8000; | |
787 | _bfd_set_gp_value (abfd, gp); | |
788 | } | |
789 | else | |
790 | { | |
791 | struct bfd_link_hash_entry *h; | |
792 | ||
b34976b6 AM |
793 | h = bfd_link_hash_lookup (link_info->hash, "_gp", FALSE, FALSE, |
794 | TRUE); | |
252b5132 RH |
795 | if (h == (struct bfd_link_hash_entry *) NULL |
796 | || h->type != bfd_link_hash_defined) | |
b34976b6 | 797 | gp_undefined = TRUE; |
252b5132 RH |
798 | else |
799 | { | |
800 | gp = (h->u.def.value | |
801 | + h->u.def.section->output_section->vma | |
802 | + h->u.def.section->output_offset); | |
803 | _bfd_set_gp_value (abfd, gp); | |
804 | } | |
805 | } | |
806 | } | |
807 | ||
808 | for (; *reloc_vector != (arelent *) NULL; reloc_vector++) | |
809 | { | |
810 | arelent *rel; | |
811 | bfd_reloc_status_type r; | |
812 | char *err; | |
813 | ||
814 | rel = *reloc_vector; | |
815 | r = bfd_reloc_ok; | |
816 | switch (rel->howto->type) | |
817 | { | |
818 | case ALPHA_R_IGNORE: | |
819 | rel->address += input_section->output_offset; | |
820 | break; | |
821 | ||
822 | case ALPHA_R_REFLONG: | |
823 | case ALPHA_R_REFQUAD: | |
824 | case ALPHA_R_BRADDR: | |
825 | case ALPHA_R_HINT: | |
826 | case ALPHA_R_SREL16: | |
827 | case ALPHA_R_SREL32: | |
828 | case ALPHA_R_SREL64: | |
1049f94e | 829 | if (relocatable |
252b5132 RH |
830 | && ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0) |
831 | { | |
832 | rel->address += input_section->output_offset; | |
833 | break; | |
834 | } | |
835 | r = bfd_perform_relocation (input_bfd, rel, data, input_section, | |
836 | output_bfd, &err); | |
837 | break; | |
838 | ||
839 | case ALPHA_R_GPREL32: | |
840 | /* This relocation is used in a switch table. It is a 32 | |
841 | bit offset from the current GP value. We must adjust it | |
842 | by the different between the original GP value and the | |
843 | current GP value. The original GP value is stored in the | |
844 | addend. We adjust the addend and let | |
845 | bfd_perform_relocation finish the job. */ | |
846 | rel->addend -= gp; | |
847 | r = bfd_perform_relocation (input_bfd, rel, data, input_section, | |
848 | output_bfd, &err); | |
849 | if (r == bfd_reloc_ok && gp_undefined) | |
850 | { | |
851 | r = bfd_reloc_dangerous; | |
852 | err = (char *) _("GP relative relocation used when GP not defined"); | |
853 | } | |
854 | break; | |
855 | ||
856 | case ALPHA_R_LITERAL: | |
857 | /* This is a reference to a literal value, generally | |
858 | (always?) in the .lita section. This is a 16 bit GP | |
859 | relative relocation. Sometimes the subsequent reloc is a | |
860 | LITUSE reloc, which indicates how this reloc is used. | |
861 | This sometimes permits rewriting the two instructions | |
862 | referred to by the LITERAL and the LITUSE into different | |
863 | instructions which do not refer to .lita. This can save | |
864 | a memory reference, and permits removing a value from | |
865 | .lita thus saving GP relative space. | |
866 | ||
867 | We do not these optimizations. To do them we would need | |
868 | to arrange to link the .lita section first, so that by | |
869 | the time we got here we would know the final values to | |
870 | use. This would not be particularly difficult, but it is | |
871 | not currently implemented. */ | |
872 | ||
873 | { | |
874 | unsigned long insn; | |
875 | ||
876 | /* I believe that the LITERAL reloc will only apply to a | |
877 | ldq or ldl instruction, so check my assumption. */ | |
878 | insn = bfd_get_32 (input_bfd, data + rel->address); | |
879 | BFD_ASSERT (((insn >> 26) & 0x3f) == 0x29 | |
880 | || ((insn >> 26) & 0x3f) == 0x28); | |
881 | ||
882 | rel->addend -= gp; | |
883 | r = bfd_perform_relocation (input_bfd, rel, data, input_section, | |
884 | output_bfd, &err); | |
885 | if (r == bfd_reloc_ok && gp_undefined) | |
886 | { | |
887 | r = bfd_reloc_dangerous; | |
888 | err = | |
889 | (char *) _("GP relative relocation used when GP not defined"); | |
890 | } | |
891 | } | |
892 | break; | |
893 | ||
894 | case ALPHA_R_LITUSE: | |
895 | /* See ALPHA_R_LITERAL above for the uses of this reloc. It | |
896 | does not cause anything to happen, itself. */ | |
897 | rel->address += input_section->output_offset; | |
898 | break; | |
346ceb11 | 899 | |
252b5132 RH |
900 | case ALPHA_R_GPDISP: |
901 | /* This marks the ldah of an ldah/lda pair which loads the | |
902 | gp register with the difference of the gp value and the | |
903 | current location. The second of the pair is r_size bytes | |
904 | ahead; it used to be marked with an ALPHA_R_IGNORE reloc, | |
905 | but that no longer happens in OSF/1 3.2. */ | |
906 | { | |
907 | unsigned long insn1, insn2; | |
908 | bfd_vma addend; | |
909 | ||
910 | /* Get the two instructions. */ | |
911 | insn1 = bfd_get_32 (input_bfd, data + rel->address); | |
912 | insn2 = bfd_get_32 (input_bfd, data + rel->address + rel->addend); | |
913 | ||
914 | BFD_ASSERT (((insn1 >> 26) & 0x3f) == 0x09); /* ldah */ | |
915 | BFD_ASSERT (((insn2 >> 26) & 0x3f) == 0x08); /* lda */ | |
916 | ||
917 | /* Get the existing addend. We must account for the sign | |
918 | extension done by lda and ldah. */ | |
919 | addend = ((insn1 & 0xffff) << 16) + (insn2 & 0xffff); | |
920 | if (insn1 & 0x8000) | |
921 | { | |
922 | addend -= 0x80000000; | |
923 | addend -= 0x80000000; | |
924 | } | |
925 | if (insn2 & 0x8000) | |
926 | addend -= 0x10000; | |
927 | ||
928 | /* The existing addend includes the different between the | |
929 | gp of the input BFD and the address in the input BFD. | |
930 | Subtract this out. */ | |
931 | addend -= (ecoff_data (input_bfd)->gp | |
932 | - (input_section->vma + rel->address)); | |
933 | ||
934 | /* Now add in the final gp value, and subtract out the | |
935 | final address. */ | |
936 | addend += (gp | |
937 | - (input_section->output_section->vma | |
938 | + input_section->output_offset | |
939 | + rel->address)); | |
940 | ||
941 | /* Change the instructions, accounting for the sign | |
942 | extension, and write them out. */ | |
943 | if (addend & 0x8000) | |
944 | addend += 0x10000; | |
945 | insn1 = (insn1 & 0xffff0000) | ((addend >> 16) & 0xffff); | |
946 | insn2 = (insn2 & 0xffff0000) | (addend & 0xffff); | |
947 | ||
948 | bfd_put_32 (input_bfd, (bfd_vma) insn1, data + rel->address); | |
949 | bfd_put_32 (input_bfd, (bfd_vma) insn2, | |
950 | data + rel->address + rel->addend); | |
951 | ||
952 | rel->address += input_section->output_offset; | |
953 | } | |
954 | break; | |
346ceb11 | 955 | |
252b5132 RH |
956 | case ALPHA_R_OP_PUSH: |
957 | /* Push a value on the reloc evaluation stack. */ | |
958 | { | |
959 | asymbol *symbol; | |
960 | bfd_vma relocation; | |
961 | ||
1049f94e | 962 | if (relocatable) |
252b5132 RH |
963 | { |
964 | rel->address += input_section->output_offset; | |
965 | break; | |
966 | } | |
967 | ||
968 | /* Figure out the relocation of this symbol. */ | |
969 | symbol = *rel->sym_ptr_ptr; | |
970 | ||
971 | if (bfd_is_und_section (symbol->section)) | |
972 | r = bfd_reloc_undefined; | |
973 | ||
974 | if (bfd_is_com_section (symbol->section)) | |
975 | relocation = 0; | |
976 | else | |
977 | relocation = symbol->value; | |
978 | relocation += symbol->section->output_section->vma; | |
979 | relocation += symbol->section->output_offset; | |
980 | relocation += rel->addend; | |
981 | ||
982 | if (tos >= RELOC_STACKSIZE) | |
983 | abort (); | |
984 | ||
985 | stack[tos++] = relocation; | |
986 | } | |
987 | break; | |
988 | ||
989 | case ALPHA_R_OP_STORE: | |
990 | /* Store a value from the reloc stack into a bitfield. */ | |
991 | { | |
992 | bfd_vma val; | |
993 | int offset, size; | |
994 | ||
1049f94e | 995 | if (relocatable) |
252b5132 RH |
996 | { |
997 | rel->address += input_section->output_offset; | |
998 | break; | |
999 | } | |
1000 | ||
1001 | if (tos == 0) | |
1002 | abort (); | |
1003 | ||
1004 | /* The offset and size for this reloc are encoded into the | |
1005 | addend field by alpha_adjust_reloc_in. */ | |
1006 | offset = (rel->addend >> 8) & 0xff; | |
1007 | size = rel->addend & 0xff; | |
1008 | ||
1009 | val = bfd_get_64 (abfd, data + rel->address); | |
1010 | val &=~ (((1 << size) - 1) << offset); | |
1011 | val |= (stack[--tos] & ((1 << size) - 1)) << offset; | |
1012 | bfd_put_64 (abfd, val, data + rel->address); | |
1013 | } | |
1014 | break; | |
1015 | ||
1016 | case ALPHA_R_OP_PSUB: | |
1017 | /* Subtract a value from the top of the stack. */ | |
1018 | { | |
1019 | asymbol *symbol; | |
1020 | bfd_vma relocation; | |
1021 | ||
1049f94e | 1022 | if (relocatable) |
252b5132 RH |
1023 | { |
1024 | rel->address += input_section->output_offset; | |
1025 | break; | |
1026 | } | |
1027 | ||
1028 | /* Figure out the relocation of this symbol. */ | |
1029 | symbol = *rel->sym_ptr_ptr; | |
1030 | ||
1031 | if (bfd_is_und_section (symbol->section)) | |
1032 | r = bfd_reloc_undefined; | |
1033 | ||
1034 | if (bfd_is_com_section (symbol->section)) | |
1035 | relocation = 0; | |
1036 | else | |
1037 | relocation = symbol->value; | |
1038 | relocation += symbol->section->output_section->vma; | |
1039 | relocation += symbol->section->output_offset; | |
1040 | relocation += rel->addend; | |
1041 | ||
1042 | if (tos == 0) | |
1043 | abort (); | |
1044 | ||
1045 | stack[tos - 1] -= relocation; | |
1046 | } | |
1047 | break; | |
1048 | ||
1049 | case ALPHA_R_OP_PRSHIFT: | |
1050 | /* Shift the value on the top of the stack. */ | |
1051 | { | |
1052 | asymbol *symbol; | |
1053 | bfd_vma relocation; | |
1054 | ||
1049f94e | 1055 | if (relocatable) |
252b5132 RH |
1056 | { |
1057 | rel->address += input_section->output_offset; | |
1058 | break; | |
1059 | } | |
1060 | ||
1061 | /* Figure out the relocation of this symbol. */ | |
1062 | symbol = *rel->sym_ptr_ptr; | |
1063 | ||
1064 | if (bfd_is_und_section (symbol->section)) | |
1065 | r = bfd_reloc_undefined; | |
1066 | ||
1067 | if (bfd_is_com_section (symbol->section)) | |
1068 | relocation = 0; | |
1069 | else | |
1070 | relocation = symbol->value; | |
1071 | relocation += symbol->section->output_section->vma; | |
1072 | relocation += symbol->section->output_offset; | |
1073 | relocation += rel->addend; | |
1074 | ||
1075 | if (tos == 0) | |
1076 | abort (); | |
1077 | ||
1078 | stack[tos - 1] >>= relocation; | |
1079 | } | |
1080 | break; | |
346ceb11 | 1081 | |
252b5132 RH |
1082 | case ALPHA_R_GPVALUE: |
1083 | /* I really don't know if this does the right thing. */ | |
1084 | gp = rel->addend; | |
b34976b6 | 1085 | gp_undefined = FALSE; |
252b5132 RH |
1086 | break; |
1087 | ||
1088 | default: | |
1089 | abort (); | |
1090 | } | |
1091 | ||
1049f94e | 1092 | if (relocatable) |
252b5132 RH |
1093 | { |
1094 | asection *os = input_section->output_section; | |
1095 | ||
1096 | /* A partial link, so keep the relocs. */ | |
1097 | os->orelocation[os->reloc_count] = rel; | |
1098 | os->reloc_count++; | |
1099 | } | |
1100 | ||
346ceb11 | 1101 | if (r != bfd_reloc_ok) |
252b5132 RH |
1102 | { |
1103 | switch (r) | |
1104 | { | |
1105 | case bfd_reloc_undefined: | |
1106 | if (! ((*link_info->callbacks->undefined_symbol) | |
1107 | (link_info, bfd_asymbol_name (*rel->sym_ptr_ptr), | |
b34976b6 | 1108 | input_bfd, input_section, rel->address, TRUE))) |
252b5132 RH |
1109 | goto error_return; |
1110 | break; | |
346ceb11 | 1111 | case bfd_reloc_dangerous: |
252b5132 RH |
1112 | if (! ((*link_info->callbacks->reloc_dangerous) |
1113 | (link_info, err, input_bfd, input_section, | |
1114 | rel->address))) | |
1115 | goto error_return; | |
1116 | break; | |
1117 | case bfd_reloc_overflow: | |
1118 | if (! ((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
1119 | (link_info, NULL, |
1120 | bfd_asymbol_name (*rel->sym_ptr_ptr), | |
252b5132 RH |
1121 | rel->howto->name, rel->addend, input_bfd, |
1122 | input_section, rel->address))) | |
1123 | goto error_return; | |
1124 | break; | |
1125 | case bfd_reloc_outofrange: | |
1126 | default: | |
1127 | abort (); | |
1128 | break; | |
1129 | } | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | if (tos != 0) | |
1134 | abort (); | |
1135 | ||
1136 | successful_return: | |
1137 | if (reloc_vector != NULL) | |
1138 | free (reloc_vector); | |
1139 | return data; | |
1140 | ||
1141 | error_return: | |
1142 | if (reloc_vector != NULL) | |
1143 | free (reloc_vector); | |
1144 | return NULL; | |
1145 | } | |
1146 | ||
1147 | /* Get the howto structure for a generic reloc type. */ | |
1148 | ||
1149 | static reloc_howto_type * | |
2c3fc389 NC |
1150 | alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1151 | bfd_reloc_code_real_type code) | |
252b5132 RH |
1152 | { |
1153 | int alpha_type; | |
1154 | ||
1155 | switch (code) | |
1156 | { | |
1157 | case BFD_RELOC_32: | |
1158 | alpha_type = ALPHA_R_REFLONG; | |
1159 | break; | |
1160 | case BFD_RELOC_64: | |
1161 | case BFD_RELOC_CTOR: | |
1162 | alpha_type = ALPHA_R_REFQUAD; | |
1163 | break; | |
1164 | case BFD_RELOC_GPREL32: | |
1165 | alpha_type = ALPHA_R_GPREL32; | |
1166 | break; | |
1167 | case BFD_RELOC_ALPHA_LITERAL: | |
1168 | alpha_type = ALPHA_R_LITERAL; | |
1169 | break; | |
1170 | case BFD_RELOC_ALPHA_LITUSE: | |
1171 | alpha_type = ALPHA_R_LITUSE; | |
1172 | break; | |
1173 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1174 | alpha_type = ALPHA_R_GPDISP; | |
1175 | break; | |
1176 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1177 | alpha_type = ALPHA_R_IGNORE; | |
1178 | break; | |
1179 | case BFD_RELOC_23_PCREL_S2: | |
1180 | alpha_type = ALPHA_R_BRADDR; | |
1181 | break; | |
1182 | case BFD_RELOC_ALPHA_HINT: | |
1183 | alpha_type = ALPHA_R_HINT; | |
1184 | break; | |
1185 | case BFD_RELOC_16_PCREL: | |
1186 | alpha_type = ALPHA_R_SREL16; | |
1187 | break; | |
1188 | case BFD_RELOC_32_PCREL: | |
1189 | alpha_type = ALPHA_R_SREL32; | |
1190 | break; | |
1191 | case BFD_RELOC_64_PCREL: | |
1192 | alpha_type = ALPHA_R_SREL64; | |
1193 | break; | |
252b5132 RH |
1194 | default: |
1195 | return (reloc_howto_type *) NULL; | |
1196 | } | |
1197 | ||
1198 | return &alpha_howto_table[alpha_type]; | |
1199 | } | |
157090f7 AM |
1200 | |
1201 | static reloc_howto_type * | |
1202 | alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1203 | const char *r_name) | |
1204 | { | |
1205 | unsigned int i; | |
1206 | ||
1207 | for (i = 0; | |
1208 | i < sizeof (alpha_howto_table) / sizeof (alpha_howto_table[0]); | |
1209 | i++) | |
1210 | if (alpha_howto_table[i].name != NULL | |
1211 | && strcasecmp (alpha_howto_table[i].name, r_name) == 0) | |
1212 | return &alpha_howto_table[i]; | |
1213 | ||
1214 | return NULL; | |
1215 | } | |
252b5132 RH |
1216 | \f |
1217 | /* A helper routine for alpha_relocate_section which converts an | |
1049f94e | 1218 | external reloc when generating relocatable output. Returns the |
252b5132 RH |
1219 | relocation amount. */ |
1220 | ||
1221 | static bfd_vma | |
2c3fc389 NC |
1222 | alpha_convert_external_reloc (bfd *output_bfd ATTRIBUTE_UNUSED, |
1223 | struct bfd_link_info *info, | |
1224 | bfd *input_bfd, | |
1225 | struct external_reloc *ext_rel, | |
1226 | struct ecoff_link_hash_entry *h) | |
252b5132 RH |
1227 | { |
1228 | unsigned long r_symndx; | |
1229 | bfd_vma relocation; | |
1230 | ||
1049f94e | 1231 | BFD_ASSERT (info->relocatable); |
252b5132 RH |
1232 | |
1233 | if (h->root.type == bfd_link_hash_defined | |
1234 | || h->root.type == bfd_link_hash_defweak) | |
1235 | { | |
1236 | asection *hsec; | |
1237 | const char *name; | |
1238 | ||
1239 | /* This symbol is defined in the output. Convert the reloc from | |
1240 | being against the symbol to being against the section. */ | |
1241 | ||
1242 | /* Clear the r_extern bit. */ | |
1243 | ext_rel->r_bits[1] &=~ RELOC_BITS1_EXTERN_LITTLE; | |
1244 | ||
1245 | /* Compute a new r_symndx value. */ | |
1246 | hsec = h->root.u.def.section; | |
1247 | name = bfd_get_section_name (output_bfd, hsec->output_section); | |
1248 | ||
dc810e39 | 1249 | r_symndx = (unsigned long) -1; |
252b5132 RH |
1250 | switch (name[1]) |
1251 | { | |
1252 | case 'A': | |
1253 | if (strcmp (name, "*ABS*") == 0) | |
1254 | r_symndx = RELOC_SECTION_ABS; | |
1255 | break; | |
1256 | case 'b': | |
1257 | if (strcmp (name, ".bss") == 0) | |
1258 | r_symndx = RELOC_SECTION_BSS; | |
1259 | break; | |
1260 | case 'd': | |
1261 | if (strcmp (name, ".data") == 0) | |
1262 | r_symndx = RELOC_SECTION_DATA; | |
1263 | break; | |
1264 | case 'f': | |
1265 | if (strcmp (name, ".fini") == 0) | |
1266 | r_symndx = RELOC_SECTION_FINI; | |
1267 | break; | |
1268 | case 'i': | |
1269 | if (strcmp (name, ".init") == 0) | |
1270 | r_symndx = RELOC_SECTION_INIT; | |
1271 | break; | |
1272 | case 'l': | |
1273 | if (strcmp (name, ".lita") == 0) | |
1274 | r_symndx = RELOC_SECTION_LITA; | |
1275 | else if (strcmp (name, ".lit8") == 0) | |
1276 | r_symndx = RELOC_SECTION_LIT8; | |
1277 | else if (strcmp (name, ".lit4") == 0) | |
1278 | r_symndx = RELOC_SECTION_LIT4; | |
1279 | break; | |
1280 | case 'p': | |
1281 | if (strcmp (name, ".pdata") == 0) | |
1282 | r_symndx = RELOC_SECTION_PDATA; | |
1283 | break; | |
1284 | case 'r': | |
1285 | if (strcmp (name, ".rdata") == 0) | |
1286 | r_symndx = RELOC_SECTION_RDATA; | |
1287 | else if (strcmp (name, ".rconst") == 0) | |
1288 | r_symndx = RELOC_SECTION_RCONST; | |
1289 | break; | |
1290 | case 's': | |
1291 | if (strcmp (name, ".sdata") == 0) | |
1292 | r_symndx = RELOC_SECTION_SDATA; | |
1293 | else if (strcmp (name, ".sbss") == 0) | |
1294 | r_symndx = RELOC_SECTION_SBSS; | |
1295 | break; | |
1296 | case 't': | |
1297 | if (strcmp (name, ".text") == 0) | |
1298 | r_symndx = RELOC_SECTION_TEXT; | |
1299 | break; | |
1300 | case 'x': | |
1301 | if (strcmp (name, ".xdata") == 0) | |
1302 | r_symndx = RELOC_SECTION_XDATA; | |
1303 | break; | |
1304 | } | |
346ceb11 | 1305 | |
cea4409c | 1306 | if (r_symndx == (unsigned long) -1) |
252b5132 RH |
1307 | abort (); |
1308 | ||
1309 | /* Add the section VMA and the symbol value. */ | |
1310 | relocation = (h->root.u.def.value | |
1311 | + hsec->output_section->vma | |
1312 | + hsec->output_offset); | |
1313 | } | |
1314 | else | |
1315 | { | |
1316 | /* Change the symndx value to the right one for | |
1317 | the output BFD. */ | |
1318 | r_symndx = h->indx; | |
cea4409c | 1319 | if (r_symndx == (unsigned long) -1) |
252b5132 RH |
1320 | { |
1321 | /* Caller must give an error. */ | |
1322 | r_symndx = 0; | |
1323 | } | |
1324 | relocation = 0; | |
1325 | } | |
1326 | ||
1327 | /* Write out the new r_symndx value. */ | |
dc810e39 | 1328 | H_PUT_32 (input_bfd, r_symndx, ext_rel->r_symndx); |
252b5132 RH |
1329 | |
1330 | return relocation; | |
1331 | } | |
1332 | ||
1333 | /* Relocate a section while linking an Alpha ECOFF file. This is | |
1334 | quite similar to get_relocated_section_contents. Perhaps they | |
1335 | could be combined somehow. */ | |
1336 | ||
b34976b6 | 1337 | static bfd_boolean |
2c3fc389 NC |
1338 | alpha_relocate_section (bfd *output_bfd, |
1339 | struct bfd_link_info *info, | |
1340 | bfd *input_bfd, | |
1341 | asection *input_section, | |
1342 | bfd_byte *contents, | |
1343 | void * external_relocs) | |
252b5132 RH |
1344 | { |
1345 | asection **symndx_to_section, *lita_sec; | |
1346 | struct ecoff_link_hash_entry **sym_hashes; | |
1347 | bfd_vma gp; | |
b34976b6 | 1348 | bfd_boolean gp_undefined; |
252b5132 RH |
1349 | bfd_vma stack[RELOC_STACKSIZE]; |
1350 | int tos = 0; | |
1351 | struct external_reloc *ext_rel; | |
1352 | struct external_reloc *ext_rel_end; | |
dc810e39 | 1353 | bfd_size_type amt; |
252b5132 RH |
1354 | |
1355 | /* We keep a table mapping the symndx found in an internal reloc to | |
1356 | the appropriate section. This is faster than looking up the | |
1357 | section by name each time. */ | |
1358 | symndx_to_section = ecoff_data (input_bfd)->symndx_to_section; | |
1359 | if (symndx_to_section == (asection **) NULL) | |
1360 | { | |
dc810e39 AM |
1361 | amt = NUM_RELOC_SECTIONS * sizeof (asection *); |
1362 | symndx_to_section = (asection **) bfd_alloc (input_bfd, amt); | |
252b5132 | 1363 | if (!symndx_to_section) |
b34976b6 | 1364 | return FALSE; |
252b5132 RH |
1365 | |
1366 | symndx_to_section[RELOC_SECTION_NONE] = NULL; | |
1367 | symndx_to_section[RELOC_SECTION_TEXT] = | |
1368 | bfd_get_section_by_name (input_bfd, ".text"); | |
1369 | symndx_to_section[RELOC_SECTION_RDATA] = | |
1370 | bfd_get_section_by_name (input_bfd, ".rdata"); | |
1371 | symndx_to_section[RELOC_SECTION_DATA] = | |
1372 | bfd_get_section_by_name (input_bfd, ".data"); | |
1373 | symndx_to_section[RELOC_SECTION_SDATA] = | |
1374 | bfd_get_section_by_name (input_bfd, ".sdata"); | |
1375 | symndx_to_section[RELOC_SECTION_SBSS] = | |
1376 | bfd_get_section_by_name (input_bfd, ".sbss"); | |
1377 | symndx_to_section[RELOC_SECTION_BSS] = | |
1378 | bfd_get_section_by_name (input_bfd, ".bss"); | |
1379 | symndx_to_section[RELOC_SECTION_INIT] = | |
1380 | bfd_get_section_by_name (input_bfd, ".init"); | |
1381 | symndx_to_section[RELOC_SECTION_LIT8] = | |
1382 | bfd_get_section_by_name (input_bfd, ".lit8"); | |
1383 | symndx_to_section[RELOC_SECTION_LIT4] = | |
1384 | bfd_get_section_by_name (input_bfd, ".lit4"); | |
1385 | symndx_to_section[RELOC_SECTION_XDATA] = | |
1386 | bfd_get_section_by_name (input_bfd, ".xdata"); | |
1387 | symndx_to_section[RELOC_SECTION_PDATA] = | |
1388 | bfd_get_section_by_name (input_bfd, ".pdata"); | |
1389 | symndx_to_section[RELOC_SECTION_FINI] = | |
1390 | bfd_get_section_by_name (input_bfd, ".fini"); | |
1391 | symndx_to_section[RELOC_SECTION_LITA] = | |
1392 | bfd_get_section_by_name (input_bfd, ".lita"); | |
1393 | symndx_to_section[RELOC_SECTION_ABS] = bfd_abs_section_ptr; | |
1394 | symndx_to_section[RELOC_SECTION_RCONST] = | |
1395 | bfd_get_section_by_name (input_bfd, ".rconst"); | |
1396 | ||
1397 | ecoff_data (input_bfd)->symndx_to_section = symndx_to_section; | |
1398 | } | |
1399 | ||
1400 | sym_hashes = ecoff_data (input_bfd)->sym_hashes; | |
1401 | ||
1402 | /* On the Alpha, the .lita section must be addressable by the global | |
1403 | pointer. To support large programs, we need to allow multiple | |
1404 | global pointers. This works as long as each input .lita section | |
1405 | is <64KB big. This implies that when producing relocatable | |
346ceb11 | 1406 | output, the .lita section is limited to 64KB. . */ |
252b5132 RH |
1407 | |
1408 | lita_sec = symndx_to_section[RELOC_SECTION_LITA]; | |
1409 | gp = _bfd_get_gp_value (output_bfd); | |
1049f94e | 1410 | if (! info->relocatable && lita_sec != NULL) |
252b5132 RH |
1411 | { |
1412 | struct ecoff_section_tdata *lita_sec_data; | |
1413 | ||
1414 | /* Make sure we have a section data structure to which we can | |
1415 | hang on to the gp value we pick for the section. */ | |
1416 | lita_sec_data = ecoff_section_data (input_bfd, lita_sec); | |
1417 | if (lita_sec_data == NULL) | |
1418 | { | |
dc810e39 | 1419 | amt = sizeof (struct ecoff_section_tdata); |
252b5132 | 1420 | lita_sec_data = ((struct ecoff_section_tdata *) |
dc810e39 | 1421 | bfd_zalloc (input_bfd, amt)); |
e9edc808 | 1422 | lita_sec->used_by_bfd = lita_sec_data; |
252b5132 RH |
1423 | } |
1424 | ||
1425 | if (lita_sec_data->gp != 0) | |
1426 | { | |
1427 | /* If we already assigned a gp to this section, we better | |
1428 | stick with that value. */ | |
1429 | gp = lita_sec_data->gp; | |
1430 | } | |
1431 | else | |
1432 | { | |
1433 | bfd_vma lita_vma; | |
1434 | bfd_size_type lita_size; | |
1435 | ||
1436 | lita_vma = lita_sec->output_offset + lita_sec->output_section->vma; | |
eea6121a | 1437 | lita_size = lita_sec->size; |
252b5132 RH |
1438 | |
1439 | if (gp == 0 | |
1440 | || lita_vma < gp - 0x8000 | |
1441 | || lita_vma + lita_size >= gp + 0x8000) | |
1442 | { | |
1443 | /* Either gp hasn't been set at all or the current gp | |
1444 | cannot address this .lita section. In both cases we | |
1445 | reset the gp to point into the "middle" of the | |
1446 | current input .lita section. */ | |
1447 | if (gp && !ecoff_data (output_bfd)->issued_multiple_gp_warning) | |
1448 | { | |
1449 | (*info->callbacks->warning) (info, | |
1450 | _("using multiple gp values"), | |
1451 | (char *) NULL, output_bfd, | |
1452 | (asection *) NULL, (bfd_vma) 0); | |
b34976b6 | 1453 | ecoff_data (output_bfd)->issued_multiple_gp_warning = TRUE; |
252b5132 RH |
1454 | } |
1455 | if (lita_vma < gp - 0x8000) | |
1456 | gp = lita_vma + lita_size - 0x8000; | |
1457 | else | |
1458 | gp = lita_vma + 0x8000; | |
1459 | ||
1460 | } | |
1461 | ||
1462 | lita_sec_data->gp = gp; | |
1463 | } | |
1464 | ||
1465 | _bfd_set_gp_value (output_bfd, gp); | |
1466 | } | |
1467 | ||
1468 | gp_undefined = (gp == 0); | |
1469 | ||
1470 | BFD_ASSERT (bfd_header_little_endian (output_bfd)); | |
1471 | BFD_ASSERT (bfd_header_little_endian (input_bfd)); | |
1472 | ||
1473 | ext_rel = (struct external_reloc *) external_relocs; | |
1474 | ext_rel_end = ext_rel + input_section->reloc_count; | |
1475 | for (; ext_rel < ext_rel_end; ext_rel++) | |
1476 | { | |
1477 | bfd_vma r_vaddr; | |
1478 | unsigned long r_symndx; | |
1479 | int r_type; | |
1480 | int r_extern; | |
1481 | int r_offset; | |
1482 | int r_size; | |
b34976b6 AM |
1483 | bfd_boolean relocatep; |
1484 | bfd_boolean adjust_addrp; | |
1485 | bfd_boolean gp_usedp; | |
252b5132 RH |
1486 | bfd_vma addend; |
1487 | ||
dc810e39 AM |
1488 | r_vaddr = H_GET_64 (input_bfd, ext_rel->r_vaddr); |
1489 | r_symndx = H_GET_32 (input_bfd, ext_rel->r_symndx); | |
252b5132 RH |
1490 | |
1491 | r_type = ((ext_rel->r_bits[0] & RELOC_BITS0_TYPE_LITTLE) | |
1492 | >> RELOC_BITS0_TYPE_SH_LITTLE); | |
1493 | r_extern = (ext_rel->r_bits[1] & RELOC_BITS1_EXTERN_LITTLE) != 0; | |
1494 | r_offset = ((ext_rel->r_bits[1] & RELOC_BITS1_OFFSET_LITTLE) | |
1495 | >> RELOC_BITS1_OFFSET_SH_LITTLE); | |
1496 | /* Ignored the reserved bits. */ | |
1497 | r_size = ((ext_rel->r_bits[3] & RELOC_BITS3_SIZE_LITTLE) | |
1498 | >> RELOC_BITS3_SIZE_SH_LITTLE); | |
1499 | ||
b34976b6 AM |
1500 | relocatep = FALSE; |
1501 | adjust_addrp = TRUE; | |
1502 | gp_usedp = FALSE; | |
252b5132 RH |
1503 | addend = 0; |
1504 | ||
1505 | switch (r_type) | |
1506 | { | |
0adc9281 NC |
1507 | case ALPHA_R_GPRELHIGH: |
1508 | (*_bfd_error_handler) | |
1509 | (_("%B: unsupported relocation: ALPHA_R_GPRELHIGH"), | |
1510 | input_bfd); | |
1511 | bfd_set_error (bfd_error_bad_value); | |
1512 | continue; | |
68ffbac6 | 1513 | |
0adc9281 NC |
1514 | case ALPHA_R_GPRELLOW: |
1515 | (*_bfd_error_handler) | |
1516 | (_("%B: unsupported relocation: ALPHA_R_GPRELLOW"), | |
1517 | input_bfd); | |
1518 | bfd_set_error (bfd_error_bad_value); | |
1519 | continue; | |
68ffbac6 | 1520 | |
252b5132 | 1521 | default: |
0adc9281 NC |
1522 | (*_bfd_error_handler) |
1523 | (_("%B: unknown relocation type %d"), | |
1524 | input_bfd, (int) r_type); | |
1525 | bfd_set_error (bfd_error_bad_value); | |
1526 | continue; | |
252b5132 RH |
1527 | |
1528 | case ALPHA_R_IGNORE: | |
1529 | /* This reloc appears after a GPDISP reloc. On earlier | |
1530 | versions of OSF/1, It marked the position of the second | |
1531 | instruction to be altered by the GPDISP reloc, but it is | |
1532 | not otherwise used for anything. For some reason, the | |
1533 | address of the relocation does not appear to include the | |
1534 | section VMA, unlike the other relocation types. */ | |
1049f94e | 1535 | if (info->relocatable) |
dc810e39 AM |
1536 | H_PUT_64 (input_bfd, input_section->output_offset + r_vaddr, |
1537 | ext_rel->r_vaddr); | |
b34976b6 | 1538 | adjust_addrp = FALSE; |
252b5132 RH |
1539 | break; |
1540 | ||
1541 | case ALPHA_R_REFLONG: | |
1542 | case ALPHA_R_REFQUAD: | |
1543 | case ALPHA_R_HINT: | |
b34976b6 | 1544 | relocatep = TRUE; |
252b5132 RH |
1545 | break; |
1546 | ||
1547 | case ALPHA_R_BRADDR: | |
1548 | case ALPHA_R_SREL16: | |
1549 | case ALPHA_R_SREL32: | |
1550 | case ALPHA_R_SREL64: | |
1551 | if (r_extern) | |
1552 | addend += - (r_vaddr + 4); | |
b34976b6 | 1553 | relocatep = TRUE; |
252b5132 RH |
1554 | break; |
1555 | ||
1556 | case ALPHA_R_GPREL32: | |
1557 | /* This relocation is used in a switch table. It is a 32 | |
1558 | bit offset from the current GP value. We must adjust it | |
1559 | by the different between the original GP value and the | |
1560 | current GP value. */ | |
b34976b6 | 1561 | relocatep = TRUE; |
252b5132 | 1562 | addend = ecoff_data (input_bfd)->gp - gp; |
b34976b6 | 1563 | gp_usedp = TRUE; |
252b5132 RH |
1564 | break; |
1565 | ||
1566 | case ALPHA_R_LITERAL: | |
1567 | /* This is a reference to a literal value, generally | |
1568 | (always?) in the .lita section. This is a 16 bit GP | |
1569 | relative relocation. Sometimes the subsequent reloc is a | |
1570 | LITUSE reloc, which indicates how this reloc is used. | |
1571 | This sometimes permits rewriting the two instructions | |
1572 | referred to by the LITERAL and the LITUSE into different | |
1573 | instructions which do not refer to .lita. This can save | |
1574 | a memory reference, and permits removing a value from | |
1575 | .lita thus saving GP relative space. | |
1576 | ||
1577 | We do not these optimizations. To do them we would need | |
1578 | to arrange to link the .lita section first, so that by | |
1579 | the time we got here we would know the final values to | |
1580 | use. This would not be particularly difficult, but it is | |
1581 | not currently implemented. */ | |
1582 | ||
1583 | /* I believe that the LITERAL reloc will only apply to a ldq | |
1584 | or ldl instruction, so check my assumption. */ | |
1585 | { | |
1586 | unsigned long insn; | |
1587 | ||
1588 | insn = bfd_get_32 (input_bfd, | |
1589 | contents + r_vaddr - input_section->vma); | |
1590 | BFD_ASSERT (((insn >> 26) & 0x3f) == 0x29 | |
1591 | || ((insn >> 26) & 0x3f) == 0x28); | |
1592 | } | |
1593 | ||
b34976b6 | 1594 | relocatep = TRUE; |
252b5132 | 1595 | addend = ecoff_data (input_bfd)->gp - gp; |
b34976b6 | 1596 | gp_usedp = TRUE; |
252b5132 RH |
1597 | break; |
1598 | ||
1599 | case ALPHA_R_LITUSE: | |
1600 | /* See ALPHA_R_LITERAL above for the uses of this reloc. It | |
1601 | does not cause anything to happen, itself. */ | |
1602 | break; | |
346ceb11 | 1603 | |
252b5132 RH |
1604 | case ALPHA_R_GPDISP: |
1605 | /* This marks the ldah of an ldah/lda pair which loads the | |
1606 | gp register with the difference of the gp value and the | |
1607 | current location. The second of the pair is r_symndx | |
1608 | bytes ahead. It used to be marked with an ALPHA_R_IGNORE | |
1609 | reloc, but OSF/1 3.2 no longer does that. */ | |
1610 | { | |
1611 | unsigned long insn1, insn2; | |
1612 | ||
1613 | /* Get the two instructions. */ | |
1614 | insn1 = bfd_get_32 (input_bfd, | |
1615 | contents + r_vaddr - input_section->vma); | |
1616 | insn2 = bfd_get_32 (input_bfd, | |
1617 | (contents | |
1618 | + r_vaddr | |
1619 | - input_section->vma | |
1620 | + r_symndx)); | |
1621 | ||
1622 | BFD_ASSERT (((insn1 >> 26) & 0x3f) == 0x09); /* ldah */ | |
1623 | BFD_ASSERT (((insn2 >> 26) & 0x3f) == 0x08); /* lda */ | |
1624 | ||
1625 | /* Get the existing addend. We must account for the sign | |
1626 | extension done by lda and ldah. */ | |
1627 | addend = ((insn1 & 0xffff) << 16) + (insn2 & 0xffff); | |
1628 | if (insn1 & 0x8000) | |
1629 | { | |
1630 | /* This is addend -= 0x100000000 without causing an | |
1631 | integer overflow on a 32 bit host. */ | |
1632 | addend -= 0x80000000; | |
1633 | addend -= 0x80000000; | |
1634 | } | |
1635 | if (insn2 & 0x8000) | |
1636 | addend -= 0x10000; | |
1637 | ||
1638 | /* The existing addend includes the difference between the | |
1639 | gp of the input BFD and the address in the input BFD. | |
1640 | We want to change this to the difference between the | |
1641 | final GP and the final address. */ | |
1642 | addend += (gp | |
1643 | - ecoff_data (input_bfd)->gp | |
1644 | + input_section->vma | |
1645 | - (input_section->output_section->vma | |
1646 | + input_section->output_offset)); | |
1647 | ||
1648 | /* Change the instructions, accounting for the sign | |
1649 | extension, and write them out. */ | |
1650 | if (addend & 0x8000) | |
1651 | addend += 0x10000; | |
1652 | insn1 = (insn1 & 0xffff0000) | ((addend >> 16) & 0xffff); | |
1653 | insn2 = (insn2 & 0xffff0000) | (addend & 0xffff); | |
1654 | ||
1655 | bfd_put_32 (input_bfd, (bfd_vma) insn1, | |
1656 | contents + r_vaddr - input_section->vma); | |
1657 | bfd_put_32 (input_bfd, (bfd_vma) insn2, | |
1658 | contents + r_vaddr - input_section->vma + r_symndx); | |
1659 | ||
b34976b6 | 1660 | gp_usedp = TRUE; |
252b5132 RH |
1661 | } |
1662 | break; | |
346ceb11 | 1663 | |
252b5132 RH |
1664 | case ALPHA_R_OP_PUSH: |
1665 | case ALPHA_R_OP_PSUB: | |
1666 | case ALPHA_R_OP_PRSHIFT: | |
1667 | /* Manipulate values on the reloc evaluation stack. The | |
1668 | r_vaddr field is not an address in input_section, it is | |
1669 | the current value (including any addend) of the object | |
1670 | being used. */ | |
1671 | if (! r_extern) | |
1672 | { | |
1673 | asection *s; | |
1674 | ||
1675 | s = symndx_to_section[r_symndx]; | |
1676 | if (s == (asection *) NULL) | |
1677 | abort (); | |
1678 | addend = s->output_section->vma + s->output_offset - s->vma; | |
1679 | } | |
1680 | else | |
1681 | { | |
1682 | struct ecoff_link_hash_entry *h; | |
1683 | ||
1684 | h = sym_hashes[r_symndx]; | |
1685 | if (h == (struct ecoff_link_hash_entry *) NULL) | |
1686 | abort (); | |
1687 | ||
1049f94e | 1688 | if (! info->relocatable) |
252b5132 RH |
1689 | { |
1690 | if (h->root.type == bfd_link_hash_defined | |
1691 | || h->root.type == bfd_link_hash_defweak) | |
1692 | addend = (h->root.u.def.value | |
1693 | + h->root.u.def.section->output_section->vma | |
1694 | + h->root.u.def.section->output_offset); | |
1695 | else | |
1696 | { | |
1697 | /* Note that we pass the address as 0, since we | |
1698 | do not have a meaningful number for the | |
1699 | location within the section that is being | |
1700 | relocated. */ | |
1701 | if (! ((*info->callbacks->undefined_symbol) | |
1702 | (info, h->root.root.string, input_bfd, | |
b34976b6 AM |
1703 | input_section, (bfd_vma) 0, TRUE))) |
1704 | return FALSE; | |
252b5132 RH |
1705 | addend = 0; |
1706 | } | |
1707 | } | |
1708 | else | |
1709 | { | |
1710 | if (h->root.type != bfd_link_hash_defined | |
1711 | && h->root.type != bfd_link_hash_defweak | |
1712 | && h->indx == -1) | |
1713 | { | |
1714 | /* This symbol is not being written out. Pass | |
1715 | the address as 0, as with undefined_symbol, | |
1716 | above. */ | |
1717 | if (! ((*info->callbacks->unattached_reloc) | |
1718 | (info, h->root.root.string, input_bfd, | |
1719 | input_section, (bfd_vma) 0))) | |
b34976b6 | 1720 | return FALSE; |
252b5132 RH |
1721 | } |
1722 | ||
1723 | addend = alpha_convert_external_reloc (output_bfd, info, | |
1724 | input_bfd, | |
1725 | ext_rel, h); | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | addend += r_vaddr; | |
1730 | ||
1049f94e | 1731 | if (info->relocatable) |
252b5132 RH |
1732 | { |
1733 | /* Adjust r_vaddr by the addend. */ | |
dc810e39 | 1734 | H_PUT_64 (input_bfd, addend, ext_rel->r_vaddr); |
252b5132 RH |
1735 | } |
1736 | else | |
1737 | { | |
1738 | switch (r_type) | |
1739 | { | |
1740 | case ALPHA_R_OP_PUSH: | |
1741 | if (tos >= RELOC_STACKSIZE) | |
1742 | abort (); | |
1743 | stack[tos++] = addend; | |
1744 | break; | |
1745 | ||
1746 | case ALPHA_R_OP_PSUB: | |
1747 | if (tos == 0) | |
1748 | abort (); | |
1749 | stack[tos - 1] -= addend; | |
1750 | break; | |
1751 | ||
1752 | case ALPHA_R_OP_PRSHIFT: | |
1753 | if (tos == 0) | |
1754 | abort (); | |
1755 | stack[tos - 1] >>= addend; | |
1756 | break; | |
1757 | } | |
1758 | } | |
1759 | ||
b34976b6 | 1760 | adjust_addrp = FALSE; |
252b5132 RH |
1761 | break; |
1762 | ||
1763 | case ALPHA_R_OP_STORE: | |
1764 | /* Store a value from the reloc stack into a bitfield. If | |
1049f94e | 1765 | we are generating relocatable output, all we do is |
252b5132 | 1766 | adjust the address of the reloc. */ |
1049f94e | 1767 | if (! info->relocatable) |
252b5132 RH |
1768 | { |
1769 | bfd_vma mask; | |
1770 | bfd_vma val; | |
1771 | ||
1772 | if (tos == 0) | |
1773 | abort (); | |
1774 | ||
1775 | /* Get the relocation mask. The separate steps and the | |
1776 | casts to bfd_vma are attempts to avoid a bug in the | |
1777 | Alpha OSF 1.3 C compiler. See reloc.c for more | |
1778 | details. */ | |
1779 | mask = 1; | |
1780 | mask <<= (bfd_vma) r_size; | |
1781 | mask -= 1; | |
1782 | ||
1783 | /* FIXME: I don't know what kind of overflow checking, | |
1784 | if any, should be done here. */ | |
1785 | val = bfd_get_64 (input_bfd, | |
1786 | contents + r_vaddr - input_section->vma); | |
1787 | val &=~ mask << (bfd_vma) r_offset; | |
1788 | val |= (stack[--tos] & mask) << (bfd_vma) r_offset; | |
1789 | bfd_put_64 (input_bfd, val, | |
1790 | contents + r_vaddr - input_section->vma); | |
1791 | } | |
1792 | break; | |
1793 | ||
1794 | case ALPHA_R_GPVALUE: | |
1795 | /* I really don't know if this does the right thing. */ | |
1796 | gp = ecoff_data (input_bfd)->gp + r_symndx; | |
b34976b6 | 1797 | gp_undefined = FALSE; |
252b5132 RH |
1798 | break; |
1799 | } | |
1800 | ||
1801 | if (relocatep) | |
1802 | { | |
1803 | reloc_howto_type *howto; | |
1804 | struct ecoff_link_hash_entry *h = NULL; | |
1805 | asection *s = NULL; | |
1806 | bfd_vma relocation; | |
1807 | bfd_reloc_status_type r; | |
1808 | ||
1809 | /* Perform a relocation. */ | |
1810 | ||
1811 | howto = &alpha_howto_table[r_type]; | |
1812 | ||
1813 | if (r_extern) | |
1814 | { | |
1815 | h = sym_hashes[r_symndx]; | |
1816 | /* If h is NULL, that means that there is a reloc | |
1817 | against an external symbol which we thought was just | |
1818 | a debugging symbol. This should not happen. */ | |
1819 | if (h == (struct ecoff_link_hash_entry *) NULL) | |
1820 | abort (); | |
1821 | } | |
1822 | else | |
1823 | { | |
1824 | if (r_symndx >= NUM_RELOC_SECTIONS) | |
1825 | s = NULL; | |
1826 | else | |
1827 | s = symndx_to_section[r_symndx]; | |
1828 | ||
1829 | if (s == (asection *) NULL) | |
1830 | abort (); | |
1831 | } | |
1832 | ||
1049f94e | 1833 | if (info->relocatable) |
252b5132 | 1834 | { |
1049f94e | 1835 | /* We are generating relocatable output, and must |
252b5132 RH |
1836 | convert the existing reloc. */ |
1837 | if (r_extern) | |
1838 | { | |
1839 | if (h->root.type != bfd_link_hash_defined | |
1840 | && h->root.type != bfd_link_hash_defweak | |
1841 | && h->indx == -1) | |
1842 | { | |
1843 | /* This symbol is not being written out. */ | |
1844 | if (! ((*info->callbacks->unattached_reloc) | |
1845 | (info, h->root.root.string, input_bfd, | |
1846 | input_section, r_vaddr - input_section->vma))) | |
b34976b6 | 1847 | return FALSE; |
252b5132 RH |
1848 | } |
1849 | ||
1850 | relocation = alpha_convert_external_reloc (output_bfd, | |
1851 | info, | |
1852 | input_bfd, | |
1853 | ext_rel, | |
1854 | h); | |
1855 | } | |
1856 | else | |
1857 | { | |
1858 | /* This is a relocation against a section. Adjust | |
1859 | the value by the amount the section moved. */ | |
1860 | relocation = (s->output_section->vma | |
1861 | + s->output_offset | |
1862 | - s->vma); | |
1863 | } | |
1864 | ||
1865 | /* If this is PC relative, the existing object file | |
1866 | appears to already have the reloc worked out. We | |
1867 | must subtract out the old value and add in the new | |
1868 | one. */ | |
1869 | if (howto->pc_relative) | |
1870 | relocation -= (input_section->output_section->vma | |
1871 | + input_section->output_offset | |
1872 | - input_section->vma); | |
1873 | ||
1874 | /* Put in any addend. */ | |
1875 | relocation += addend; | |
1876 | ||
1877 | /* Adjust the contents. */ | |
1878 | r = _bfd_relocate_contents (howto, input_bfd, relocation, | |
1879 | (contents | |
1880 | + r_vaddr | |
1881 | - input_section->vma)); | |
1882 | } | |
1883 | else | |
1884 | { | |
1885 | /* We are producing a final executable. */ | |
1886 | if (r_extern) | |
1887 | { | |
1888 | /* This is a reloc against a symbol. */ | |
1889 | if (h->root.type == bfd_link_hash_defined | |
1890 | || h->root.type == bfd_link_hash_defweak) | |
1891 | { | |
1892 | asection *hsec; | |
1893 | ||
1894 | hsec = h->root.u.def.section; | |
1895 | relocation = (h->root.u.def.value | |
1896 | + hsec->output_section->vma | |
1897 | + hsec->output_offset); | |
1898 | } | |
1899 | else | |
1900 | { | |
1901 | if (! ((*info->callbacks->undefined_symbol) | |
1902 | (info, h->root.root.string, input_bfd, | |
1903 | input_section, | |
b34976b6 AM |
1904 | r_vaddr - input_section->vma, TRUE))) |
1905 | return FALSE; | |
252b5132 RH |
1906 | relocation = 0; |
1907 | } | |
1908 | } | |
1909 | else | |
1910 | { | |
1911 | /* This is a reloc against a section. */ | |
1912 | relocation = (s->output_section->vma | |
1913 | + s->output_offset | |
1914 | - s->vma); | |
1915 | ||
1916 | /* Adjust a PC relative relocation by removing the | |
1917 | reference to the original source section. */ | |
1918 | if (howto->pc_relative) | |
1919 | relocation += input_section->vma; | |
1920 | } | |
1921 | ||
1922 | r = _bfd_final_link_relocate (howto, | |
1923 | input_bfd, | |
1924 | input_section, | |
1925 | contents, | |
1926 | r_vaddr - input_section->vma, | |
1927 | relocation, | |
1928 | addend); | |
1929 | } | |
1930 | ||
1931 | if (r != bfd_reloc_ok) | |
1932 | { | |
1933 | switch (r) | |
1934 | { | |
1935 | default: | |
1936 | case bfd_reloc_outofrange: | |
1937 | abort (); | |
1938 | case bfd_reloc_overflow: | |
1939 | { | |
1940 | const char *name; | |
1941 | ||
1942 | if (r_extern) | |
1943 | name = sym_hashes[r_symndx]->root.root.string; | |
1944 | else | |
1945 | name = bfd_section_name (input_bfd, | |
1946 | symndx_to_section[r_symndx]); | |
1947 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
1948 | (info, NULL, name, |
1949 | alpha_howto_table[r_type].name, | |
252b5132 RH |
1950 | (bfd_vma) 0, input_bfd, input_section, |
1951 | r_vaddr - input_section->vma))) | |
b34976b6 | 1952 | return FALSE; |
252b5132 RH |
1953 | } |
1954 | break; | |
1955 | } | |
1956 | } | |
1957 | } | |
1958 | ||
1049f94e | 1959 | if (info->relocatable && adjust_addrp) |
252b5132 RH |
1960 | { |
1961 | /* Change the address of the relocation. */ | |
dc810e39 AM |
1962 | H_PUT_64 (input_bfd, |
1963 | (input_section->output_section->vma | |
1964 | + input_section->output_offset | |
1965 | - input_section->vma | |
1966 | + r_vaddr), | |
1967 | ext_rel->r_vaddr); | |
252b5132 RH |
1968 | } |
1969 | ||
1970 | if (gp_usedp && gp_undefined) | |
1971 | { | |
1972 | if (! ((*info->callbacks->reloc_dangerous) | |
cc9ff76a | 1973 | (info, _("GP relative relocation used when GP not defined"), |
252b5132 | 1974 | input_bfd, input_section, r_vaddr - input_section->vma))) |
b34976b6 | 1975 | return FALSE; |
252b5132 RH |
1976 | /* Only give the error once per link. */ |
1977 | gp = 4; | |
1978 | _bfd_set_gp_value (output_bfd, gp); | |
b34976b6 | 1979 | gp_undefined = FALSE; |
252b5132 RH |
1980 | } |
1981 | } | |
1982 | ||
1983 | if (tos != 0) | |
1984 | abort (); | |
1985 | ||
b34976b6 | 1986 | return TRUE; |
252b5132 RH |
1987 | } |
1988 | \f | |
1989 | /* Do final adjustments to the filehdr and the aouthdr. This routine | |
1990 | sets the dynamic bits in the file header. */ | |
1991 | ||
b34976b6 | 1992 | static bfd_boolean |
2c3fc389 NC |
1993 | alpha_adjust_headers (bfd *abfd, |
1994 | struct internal_filehdr *fhdr, | |
1995 | struct internal_aouthdr *ahdr ATTRIBUTE_UNUSED) | |
252b5132 RH |
1996 | { |
1997 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == (DYNAMIC | EXEC_P)) | |
1998 | fhdr->f_flags |= F_ALPHA_CALL_SHARED; | |
1999 | else if ((abfd->flags & DYNAMIC) != 0) | |
2000 | fhdr->f_flags |= F_ALPHA_SHARABLE; | |
b34976b6 | 2001 | return TRUE; |
252b5132 RH |
2002 | } |
2003 | \f | |
2004 | /* Archive handling. In OSF/1 (or Digital Unix) v3.2, Digital | |
2005 | introduced archive packing, in which the elements in an archive are | |
2006 | optionally compressed using a simple dictionary scheme. We know | |
2007 | how to read such archives, but we don't write them. */ | |
2008 | ||
2009 | #define alpha_ecoff_slurp_armap _bfd_ecoff_slurp_armap | |
2010 | #define alpha_ecoff_slurp_extended_name_table \ | |
2011 | _bfd_ecoff_slurp_extended_name_table | |
2012 | #define alpha_ecoff_construct_extended_name_table \ | |
2013 | _bfd_ecoff_construct_extended_name_table | |
2014 | #define alpha_ecoff_truncate_arname _bfd_ecoff_truncate_arname | |
2015 | #define alpha_ecoff_write_armap _bfd_ecoff_write_armap | |
8f95b6e4 | 2016 | #define alpha_ecoff_write_ar_hdr _bfd_generic_write_ar_hdr |
252b5132 RH |
2017 | #define alpha_ecoff_generic_stat_arch_elt _bfd_ecoff_generic_stat_arch_elt |
2018 | #define alpha_ecoff_update_armap_timestamp _bfd_ecoff_update_armap_timestamp | |
2019 | ||
2020 | /* A compressed file uses this instead of ARFMAG. */ | |
2021 | ||
2022 | #define ARFZMAG "Z\012" | |
2023 | ||
2024 | /* Read an archive header. This is like the standard routine, but it | |
2025 | also accepts ARFZMAG. */ | |
2026 | ||
2c3fc389 NC |
2027 | static void * |
2028 | alpha_ecoff_read_ar_hdr (bfd *abfd) | |
252b5132 RH |
2029 | { |
2030 | struct areltdata *ret; | |
2031 | struct ar_hdr *h; | |
2032 | ||
2033 | ret = (struct areltdata *) _bfd_generic_read_ar_hdr_mag (abfd, ARFZMAG); | |
2034 | if (ret == NULL) | |
2035 | return NULL; | |
2036 | ||
2037 | h = (struct ar_hdr *) ret->arch_header; | |
2038 | if (strncmp (h->ar_fmag, ARFZMAG, 2) == 0) | |
2039 | { | |
2040 | bfd_byte ab[8]; | |
2041 | ||
2042 | /* This is a compressed file. We must set the size correctly. | |
2043 | The size is the eight bytes after the dummy file header. */ | |
dc810e39 AM |
2044 | if (bfd_seek (abfd, (file_ptr) FILHSZ, SEEK_CUR) != 0 |
2045 | || bfd_bread (ab, (bfd_size_type) 8, abfd) != 8 | |
2046 | || bfd_seek (abfd, (file_ptr) (- (FILHSZ + 8)), SEEK_CUR) != 0) | |
252b5132 RH |
2047 | return NULL; |
2048 | ||
dc810e39 | 2049 | ret->parsed_size = H_GET_64 (abfd, ab); |
252b5132 RH |
2050 | } |
2051 | ||
2c3fc389 | 2052 | return ret; |
252b5132 RH |
2053 | } |
2054 | ||
2055 | /* Get an archive element at a specified file position. This is where | |
2056 | we uncompress the archive element if necessary. */ | |
2057 | ||
2058 | static bfd * | |
2c3fc389 | 2059 | alpha_ecoff_get_elt_at_filepos (bfd *archive, file_ptr filepos) |
252b5132 RH |
2060 | { |
2061 | bfd *nbfd = NULL; | |
2062 | struct areltdata *tdata; | |
2063 | struct ar_hdr *hdr; | |
2064 | bfd_byte ab[8]; | |
2065 | bfd_size_type size; | |
2066 | bfd_byte *buf, *p; | |
2067 | struct bfd_in_memory *bim; | |
2068 | ||
493152cb | 2069 | buf = NULL; |
252b5132 RH |
2070 | nbfd = _bfd_get_elt_at_filepos (archive, filepos); |
2071 | if (nbfd == NULL) | |
2072 | goto error_return; | |
2073 | ||
2074 | if ((nbfd->flags & BFD_IN_MEMORY) != 0) | |
2075 | { | |
2076 | /* We have already expanded this BFD. */ | |
2077 | return nbfd; | |
2078 | } | |
2079 | ||
2080 | tdata = (struct areltdata *) nbfd->arelt_data; | |
2081 | hdr = (struct ar_hdr *) tdata->arch_header; | |
2082 | if (strncmp (hdr->ar_fmag, ARFZMAG, 2) != 0) | |
2083 | return nbfd; | |
2084 | ||
2085 | /* We must uncompress this element. We do this by copying it into a | |
dc810e39 | 2086 | memory buffer, and making bfd_bread and bfd_seek use that buffer. |
252b5132 RH |
2087 | This can use a lot of memory, but it's simpler than getting a |
2088 | temporary file, making that work with the file descriptor caching | |
2089 | code, and making sure that it is deleted at all appropriate | |
2090 | times. It can be changed if it ever becomes important. */ | |
2091 | ||
2092 | /* The compressed file starts with a dummy ECOFF file header. */ | |
dc810e39 | 2093 | if (bfd_seek (nbfd, (file_ptr) FILHSZ, SEEK_SET) != 0) |
252b5132 RH |
2094 | goto error_return; |
2095 | ||
2096 | /* The next eight bytes are the real file size. */ | |
dc810e39 | 2097 | if (bfd_bread (ab, (bfd_size_type) 8, nbfd) != 8) |
252b5132 | 2098 | goto error_return; |
dc810e39 | 2099 | size = H_GET_64 (nbfd, ab); |
252b5132 | 2100 | |
493152cb | 2101 | if (size != 0) |
252b5132 RH |
2102 | { |
2103 | bfd_size_type left; | |
2104 | bfd_byte dict[4096]; | |
2105 | unsigned int h; | |
2106 | bfd_byte b; | |
2107 | ||
493152cb | 2108 | buf = (bfd_byte *) bfd_malloc (size); |
252b5132 RH |
2109 | if (buf == NULL) |
2110 | goto error_return; | |
2111 | p = buf; | |
2112 | ||
2113 | left = size; | |
2114 | ||
346ceb11 | 2115 | /* I don't know what the next eight bytes are for. */ |
dc810e39 | 2116 | if (bfd_bread (ab, (bfd_size_type) 8, nbfd) != 8) |
252b5132 RH |
2117 | goto error_return; |
2118 | ||
2119 | /* This is the uncompression algorithm. It's a simple | |
2120 | dictionary based scheme in which each character is predicted | |
2121 | by a hash of the previous three characters. A control byte | |
2122 | indicates whether the character is predicted or whether it | |
2123 | appears in the input stream; each control byte manages the | |
2124 | next eight bytes in the output stream. */ | |
2125 | memset (dict, 0, sizeof dict); | |
2126 | h = 0; | |
dc810e39 | 2127 | while (bfd_bread (&b, (bfd_size_type) 1, nbfd) == 1) |
252b5132 RH |
2128 | { |
2129 | unsigned int i; | |
2130 | ||
2131 | for (i = 0; i < 8; i++, b >>= 1) | |
2132 | { | |
2133 | bfd_byte n; | |
2134 | ||
2135 | if ((b & 1) == 0) | |
2136 | n = dict[h]; | |
2137 | else | |
2138 | { | |
dc810e39 | 2139 | if (! bfd_bread (&n, (bfd_size_type) 1, nbfd)) |
252b5132 RH |
2140 | goto error_return; |
2141 | dict[h] = n; | |
2142 | } | |
2143 | ||
2144 | *p++ = n; | |
2145 | ||
2146 | --left; | |
2147 | if (left == 0) | |
2148 | break; | |
2149 | ||
2150 | h <<= 4; | |
2151 | h ^= n; | |
2152 | h &= sizeof dict - 1; | |
2153 | } | |
2154 | ||
2155 | if (left == 0) | |
2156 | break; | |
2157 | } | |
2158 | } | |
2159 | ||
2160 | /* Now the uncompressed file contents are in buf. */ | |
2161 | bim = ((struct bfd_in_memory *) | |
493152cb | 2162 | bfd_malloc ((bfd_size_type) sizeof (struct bfd_in_memory))); |
252b5132 RH |
2163 | if (bim == NULL) |
2164 | goto error_return; | |
2165 | bim->size = size; | |
2166 | bim->buffer = buf; | |
2167 | ||
b34976b6 | 2168 | nbfd->mtime_set = TRUE; |
252b5132 RH |
2169 | nbfd->mtime = strtol (hdr->ar_date, (char **) NULL, 10); |
2170 | ||
2171 | nbfd->flags |= BFD_IN_MEMORY; | |
2c3fc389 | 2172 | nbfd->iostream = bim; |
65077aa8 TG |
2173 | nbfd->iovec = &_bfd_memory_iovec; |
2174 | nbfd->origin = 0; | |
252b5132 RH |
2175 | BFD_ASSERT (! nbfd->cacheable); |
2176 | ||
2177 | return nbfd; | |
2178 | ||
2179 | error_return: | |
493152cb AM |
2180 | if (buf != NULL) |
2181 | free (buf); | |
252b5132 RH |
2182 | if (nbfd != NULL) |
2183 | bfd_close (nbfd); | |
346ceb11 | 2184 | return NULL; |
252b5132 RH |
2185 | } |
2186 | ||
2187 | /* Open the next archived file. */ | |
2188 | ||
2189 | static bfd * | |
2c3fc389 | 2190 | alpha_ecoff_openr_next_archived_file (bfd *archive, bfd *last_file) |
252b5132 RH |
2191 | { |
2192 | file_ptr filestart; | |
2193 | ||
2194 | if (last_file == NULL) | |
2195 | filestart = bfd_ardata (archive)->first_file_filepos; | |
2196 | else | |
2197 | { | |
2198 | struct areltdata *t; | |
2199 | struct ar_hdr *h; | |
2200 | bfd_size_type size; | |
2201 | ||
2202 | /* We can't use arelt_size here, because that uses parsed_size, | |
2203 | which is the uncompressed size. We need the compressed size. */ | |
2204 | t = (struct areltdata *) last_file->arelt_data; | |
2205 | h = (struct ar_hdr *) t->arch_header; | |
2206 | size = strtol (h->ar_size, (char **) NULL, 10); | |
2207 | ||
2208 | /* Pad to an even boundary... | |
2209 | Note that last_file->origin can be odd in the case of | |
346ceb11 | 2210 | BSD-4.4-style element with a long odd size. */ |
65077aa8 | 2211 | filestart = last_file->proxy_origin + size; |
252b5132 RH |
2212 | filestart += filestart % 2; |
2213 | } | |
2214 | ||
2215 | return alpha_ecoff_get_elt_at_filepos (archive, filestart); | |
2216 | } | |
2217 | ||
2218 | /* Open the archive file given an index into the armap. */ | |
2219 | ||
2220 | static bfd * | |
91d6fa6a | 2221 | alpha_ecoff_get_elt_at_index (bfd *abfd, symindex sym_index) |
252b5132 RH |
2222 | { |
2223 | carsym *entry; | |
2224 | ||
91d6fa6a | 2225 | entry = bfd_ardata (abfd)->symdefs + sym_index; |
252b5132 RH |
2226 | return alpha_ecoff_get_elt_at_filepos (abfd, entry->file_offset); |
2227 | } | |
2228 | \f | |
2229 | /* This is the ECOFF backend structure. The backend field of the | |
2230 | target vector points to this. */ | |
2231 | ||
2232 | static const struct ecoff_backend_data alpha_ecoff_backend_data = | |
2233 | { | |
2234 | /* COFF backend structure. */ | |
2235 | { | |
2c3fc389 NC |
2236 | (void (*) (bfd *,void *,int,int,int,int,void *)) bfd_void, /* aux_in */ |
2237 | (void (*) (bfd *,void *,void *)) bfd_void, /* sym_in */ | |
2238 | (void (*) (bfd *,void *,void *)) bfd_void, /* lineno_in */ | |
2239 | (unsigned (*) (bfd *,void *,int,int,int,int,void *)) bfd_void,/*aux_out*/ | |
2240 | (unsigned (*) (bfd *,void *,void *)) bfd_void, /* sym_out */ | |
2241 | (unsigned (*) (bfd *,void *,void *)) bfd_void, /* lineno_out */ | |
2242 | (unsigned (*) (bfd *,void *,void *)) bfd_void, /* reloc_out */ | |
252b5132 RH |
2243 | alpha_ecoff_swap_filehdr_out, alpha_ecoff_swap_aouthdr_out, |
2244 | alpha_ecoff_swap_scnhdr_out, | |
68ffbac6 | 2245 | FILHSZ, AOUTSZ, SCNHSZ, 0, 0, 0, 0, FILNMLEN, TRUE, |
88183869 | 2246 | ECOFF_NO_LONG_SECTION_NAMES, 4, FALSE, 2, |
252b5132 RH |
2247 | alpha_ecoff_swap_filehdr_in, alpha_ecoff_swap_aouthdr_in, |
2248 | alpha_ecoff_swap_scnhdr_in, NULL, | |
2249 | alpha_ecoff_bad_format_hook, _bfd_ecoff_set_arch_mach_hook, | |
2250 | alpha_ecoff_mkobject_hook, _bfd_ecoff_styp_to_sec_flags, | |
2251 | _bfd_ecoff_set_alignment_hook, _bfd_ecoff_slurp_symbol_table, | |
7b50b349 | 2252 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
2b5c217d | 2253 | NULL, NULL, NULL, NULL |
252b5132 RH |
2254 | }, |
2255 | /* Supported architecture. */ | |
2256 | bfd_arch_alpha, | |
2257 | /* Initial portion of armap string. */ | |
2258 | "________64", | |
2259 | /* The page boundary used to align sections in a demand-paged | |
2260 | executable file. E.g., 0x1000. */ | |
2261 | 0x2000, | |
b34976b6 AM |
2262 | /* TRUE if the .rdata section is part of the text segment, as on the |
2263 | Alpha. FALSE if .rdata is part of the data segment, as on the | |
252b5132 | 2264 | MIPS. */ |
b34976b6 | 2265 | TRUE, |
252b5132 RH |
2266 | /* Bitsize of constructor entries. */ |
2267 | 64, | |
2268 | /* Reloc to use for constructor entries. */ | |
2269 | &alpha_howto_table[ALPHA_R_REFQUAD], | |
2270 | { | |
2271 | /* Symbol table magic number. */ | |
2272 | magicSym2, | |
2273 | /* Alignment of debugging information. E.g., 4. */ | |
2274 | 8, | |
2275 | /* Sizes of external symbolic information. */ | |
2276 | sizeof (struct hdr_ext), | |
2277 | sizeof (struct dnr_ext), | |
2278 | sizeof (struct pdr_ext), | |
2279 | sizeof (struct sym_ext), | |
2280 | sizeof (struct opt_ext), | |
2281 | sizeof (struct fdr_ext), | |
2282 | sizeof (struct rfd_ext), | |
2283 | sizeof (struct ext_ext), | |
2284 | /* Functions to swap in external symbolic data. */ | |
2285 | ecoff_swap_hdr_in, | |
2286 | ecoff_swap_dnr_in, | |
2287 | ecoff_swap_pdr_in, | |
2288 | ecoff_swap_sym_in, | |
2289 | ecoff_swap_opt_in, | |
2290 | ecoff_swap_fdr_in, | |
2291 | ecoff_swap_rfd_in, | |
2292 | ecoff_swap_ext_in, | |
2293 | _bfd_ecoff_swap_tir_in, | |
2294 | _bfd_ecoff_swap_rndx_in, | |
2295 | /* Functions to swap out external symbolic data. */ | |
2296 | ecoff_swap_hdr_out, | |
2297 | ecoff_swap_dnr_out, | |
2298 | ecoff_swap_pdr_out, | |
2299 | ecoff_swap_sym_out, | |
2300 | ecoff_swap_opt_out, | |
2301 | ecoff_swap_fdr_out, | |
2302 | ecoff_swap_rfd_out, | |
2303 | ecoff_swap_ext_out, | |
2304 | _bfd_ecoff_swap_tir_out, | |
2305 | _bfd_ecoff_swap_rndx_out, | |
2306 | /* Function to read in symbolic data. */ | |
2307 | _bfd_ecoff_slurp_symbolic_info | |
2308 | }, | |
2309 | /* External reloc size. */ | |
2310 | RELSZ, | |
2311 | /* Reloc swapping functions. */ | |
2312 | alpha_ecoff_swap_reloc_in, | |
2313 | alpha_ecoff_swap_reloc_out, | |
2314 | /* Backend reloc tweaking. */ | |
2315 | alpha_adjust_reloc_in, | |
2316 | alpha_adjust_reloc_out, | |
2317 | /* Relocate section contents while linking. */ | |
2318 | alpha_relocate_section, | |
2319 | /* Do final adjustments to filehdr and aouthdr. */ | |
2320 | alpha_adjust_headers, | |
2321 | /* Read an element from an archive at a given file position. */ | |
2322 | alpha_ecoff_get_elt_at_filepos | |
2323 | }; | |
2324 | ||
2325 | /* Looking up a reloc type is Alpha specific. */ | |
2326 | #define _bfd_ecoff_bfd_reloc_type_lookup alpha_bfd_reloc_type_lookup | |
157090f7 AM |
2327 | #define _bfd_ecoff_bfd_reloc_name_lookup \ |
2328 | alpha_bfd_reloc_name_lookup | |
252b5132 RH |
2329 | |
2330 | /* So is getting relocated section contents. */ | |
2331 | #define _bfd_ecoff_bfd_get_relocated_section_contents \ | |
2332 | alpha_ecoff_get_relocated_section_contents | |
2333 | ||
2334 | /* Handling file windows is generic. */ | |
2335 | #define _bfd_ecoff_get_section_contents_in_window \ | |
2336 | _bfd_generic_get_section_contents_in_window | |
2337 | ||
ae17ab41 CM |
2338 | /* Input section flag lookup is generic. */ |
2339 | #define _bfd_ecoff_bfd_lookup_section_flags bfd_generic_lookup_section_flags | |
2340 | ||
252b5132 RH |
2341 | /* Relaxing sections is generic. */ |
2342 | #define _bfd_ecoff_bfd_relax_section bfd_generic_relax_section | |
2343 | #define _bfd_ecoff_bfd_gc_sections bfd_generic_gc_sections | |
8550eb6e | 2344 | #define _bfd_ecoff_bfd_merge_sections bfd_generic_merge_sections |
72adc230 | 2345 | #define _bfd_ecoff_bfd_is_group_section bfd_generic_is_group_section |
e61463e1 | 2346 | #define _bfd_ecoff_bfd_discard_group bfd_generic_discard_group |
082b7297 | 2347 | #define _bfd_ecoff_section_already_linked \ |
c77ec726 | 2348 | _bfd_coff_section_already_linked |
3023e3f6 | 2349 | #define _bfd_ecoff_bfd_define_common_symbol bfd_generic_define_common_symbol |
252b5132 RH |
2350 | |
2351 | const bfd_target ecoffalpha_little_vec = | |
2352 | { | |
2353 | "ecoff-littlealpha", /* name */ | |
2354 | bfd_target_ecoff_flavour, | |
2355 | BFD_ENDIAN_LITTLE, /* data byte order is little */ | |
2356 | BFD_ENDIAN_LITTLE, /* header byte order is little */ | |
2357 | ||
2358 | (HAS_RELOC | EXEC_P | /* object flags */ | |
2359 | HAS_LINENO | HAS_DEBUG | | |
2360 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), | |
2361 | ||
2362 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), | |
2363 | 0, /* leading underscore */ | |
2364 | ' ', /* ar_pad_char */ | |
2365 | 15, /* ar_max_namelen */ | |
0aabe54e | 2366 | 0, /* match priority. */ |
252b5132 RH |
2367 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
2368 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
2369 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ | |
2370 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
2371 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
2372 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ | |
2373 | ||
2374 | {_bfd_dummy_target, alpha_ecoff_object_p, /* bfd_check_format */ | |
66cd82b5 | 2375 | bfd_generic_archive_p, _bfd_dummy_target}, |
252b5132 RH |
2376 | {bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */ |
2377 | _bfd_generic_mkarchive, bfd_false}, | |
2378 | {bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */ | |
2379 | _bfd_write_archive_contents, bfd_false}, | |
2380 | ||
2381 | BFD_JUMP_TABLE_GENERIC (_bfd_ecoff), | |
2382 | BFD_JUMP_TABLE_COPY (_bfd_ecoff), | |
2383 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
2384 | BFD_JUMP_TABLE_ARCHIVE (alpha_ecoff), | |
2385 | BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff), | |
2386 | BFD_JUMP_TABLE_RELOCS (_bfd_ecoff), | |
2387 | BFD_JUMP_TABLE_WRITE (_bfd_ecoff), | |
2388 | BFD_JUMP_TABLE_LINK (_bfd_ecoff), | |
2389 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
2390 | ||
c3c89269 | 2391 | NULL, |
346ceb11 | 2392 | |
2c3fc389 | 2393 | & alpha_ecoff_backend_data |
252b5132 | 2394 | }; |