1 /* BFD back-end for mmo objects (MMIX-specific object-format).
2 Copyright (C) 2001-2017 Free Software Foundation, Inc.
3 Written by Hans-Peter Nilsson (hp@bitrange.com).
4 Infrastructure and other bits originally copied from srec.c and
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
29 The mmo object format is used exclusively together with Professor
30 Donald E.@: Knuth's educational 64-bit processor MMIX. The simulator
31 @command{mmix} which is available at
32 @url{http://mmix.cs.hm.edu/src/index.html}
33 understands this format. That package also includes a combined
34 assembler and linker called @command{mmixal}. The mmo format has
35 no advantages feature-wise compared to e.g. ELF. It is a simple
36 non-relocatable object format with no support for archives or
37 debugging information, except for symbol value information and
38 line numbers (which is not yet implemented in BFD). See
39 @url{http://mmix.cs.hm.edu/} for more
40 information about MMIX. The ELF format is used for intermediate
41 object files in the BFD implementation.
43 @c We want to xref the symbol table node. A feature in "chew"
44 @c requires that "commands" do not contain spaces in the
45 @c arguments. Hence the hyphen in "Symbol-table".
49 @* mmo section mapping::
53 File layout, Symbol-table, mmo, mmo
57 The mmo file contents is not partitioned into named sections as
58 with e.g.@: ELF. Memory areas is formed by specifying the
59 location of the data that follows. Only the memory area
60 @samp{0x0000@dots{}00} to @samp{0x01ff@dots{}ff} is executable, so
61 it is used for code (and constants) and the area
62 @samp{0x2000@dots{}00} to @samp{0x20ff@dots{}ff} is used for
63 writable data. @xref{mmo section mapping}.
65 There is provision for specifying ``special data'' of 65536
66 different types. We use type 80 (decimal), arbitrarily chosen the
67 same as the ELF <<e_machine>> number for MMIX, filling it with
68 section information normally found in ELF objects. @xref{mmo
71 Contents is entered as 32-bit words, xor:ed over previous
72 contents, always zero-initialized. A word that starts with the
73 byte @samp{0x98} forms a command called a @samp{lopcode}, where
74 the next byte distinguished between the thirteen lopcodes. The
75 two remaining bytes, called the @samp{Y} and @samp{Z} fields, or
76 the @samp{YZ} field (a 16-bit big-endian number), are used for
77 various purposes different for each lopcode. As documented in
78 @url{http://mmix.cs.hm.edu/doc/mmixal.pdf},
83 0x98000001. The next word is contents, regardless of whether it
84 starts with 0x98 or not.
87 0x9801YYZZ, where @samp{Z} is 1 or 2. This is a location
88 directive, setting the location for the next data to the next
89 32-bit word (for @math{Z = 1}) or 64-bit word (for @math{Z = 2}),
90 plus @math{Y * 2^56}. Normally @samp{Y} is 0 for the text segment
91 and 2 for the data segment. Beware that the low bits of non-
92 tetrabyte-aligned values are silently discarded when being
93 automatically incremented and when storing contents (in contrast
94 to e.g. its use as current location when followed by lop_fixo
95 et al before the next possibly-quoted tetrabyte contents).
98 0x9802YYZZ. Increase the current location by @samp{YZ} bytes.
101 0x9803YYZZ, where @samp{Z} is 1 or 2. Store the current location
102 as 64 bits into the location pointed to by the next 32-bit
103 (@math{Z = 1}) or 64-bit (@math{Z = 2}) word, plus @math{Y *
107 0x9804YYZZ. @samp{YZ} is stored into the current location plus
111 0x980500ZZ. @samp{Z} is 16 or 24. A value @samp{L} derived from
112 the following 32-bit word are used in a manner similar to
113 @samp{YZ} in lop_fixr: it is xor:ed into the current location
114 minus @math{4 * L}. The first byte of the word is 0 or 1. If it
115 is 1, then @math{L = (@var{lowest 24 bits of word}) - 2^Z}, if 0,
116 then @math{L = (@var{lowest 24 bits of word})}.
119 0x9806YYZZ. @samp{Y} is the file number, @samp{Z} is count of
120 32-bit words. Set the file number to @samp{Y} and the line
121 counter to 0. The next @math{Z * 4} bytes contain the file name,
122 padded with zeros if the count is not a multiple of four. The
123 same @samp{Y} may occur multiple times, but @samp{Z} must be 0 for
124 all but the first occurrence.
127 0x9807YYZZ. @samp{YZ} is the line number. Together with
128 lop_file, it forms the source location for the next 32-bit word.
129 Note that for each non-lopcode 32-bit word, line numbers are
130 assumed incremented by one.
133 0x9808YYZZ. @samp{YZ} is the type number. Data until the next
134 lopcode other than lop_quote forms special data of type @samp{YZ}.
135 @xref{mmo section mapping}.
137 Other types than 80, (or type 80 with a content that does not
138 parse) is stored in sections named <<.MMIX.spec_data.@var{n}>>
139 where @var{n} is the @samp{YZ}-type. The flags for such a
140 sections say not to allocate or load the data. The vma is 0.
141 Contents of multiple occurrences of special data @var{n} is
142 concatenated to the data of the previous lop_spec @var{n}s. The
143 location in data or code at which the lop_spec occurred is lost.
146 0x980901ZZ. The first lopcode in a file. The @samp{Z} field forms the
147 length of header information in 32-bit words, where the first word
148 tells the time in seconds since @samp{00:00:00 GMT Jan 1 1970}.
151 0x980a00ZZ. @math{Z > 32}. This lopcode follows after all
152 content-generating lopcodes in a program. The @samp{Z} field
153 denotes the value of @samp{rG} at the beginning of the program.
154 The following @math{256 - Z} big-endian 64-bit words are loaded
155 into global registers @samp{$G} @dots{} @samp{$255}.
158 0x980b0000. The next-to-last lopcode in a program. Must follow
159 immediately after the lop_post lopcode and its data. After this
160 lopcode follows all symbols in a compressed format
161 (@pxref{Symbol-table}).
164 0x980cYYZZ. The last lopcode in a program. It must follow the
165 lop_stab lopcode and its data. The @samp{YZ} field contains the
166 number of 32-bit words of symbol table information after the
167 preceding lop_stab lopcode.
170 Note that the lopcode "fixups"; <<lop_fixr>>, <<lop_fixrx>> and
171 <<lop_fixo>> are not generated by BFD, but are handled. They are
172 generated by <<mmixal>>.
175 This trivial one-label, one-instruction file:
179 can be represented this way in mmo:
181 | 0x98090101 - lop_pre, one 32-bit word with timestamp.
183 | 0x98010002 - lop_loc, text segment, using a 64-bit address.
184 | Note that mmixal does not emit this for the file above.
185 | 0x00000000 - Address, high 32 bits.
186 | 0x00000000 - Address, low 32 bits.
187 | 0x98060002 - lop_file, 2 32-bit words for file-name.
188 | 0x74657374 - "test"
189 | 0x2e730000 - ".s\0\0"
190 | 0x98070001 - lop_line, line 1.
191 | 0x00010203 - TRAP 1,2,3
192 | 0x980a00ff - lop_post, setting $255 to 0.
195 | 0x980b0000 - lop_stab for ":Main" = 0, serial 1.
196 | 0x203a4040 @xref{Symbol-table}.
201 | 0x980c0005 - lop_end; symbol table contained five 32-bit words. */
206 #include "libiberty.h"
207 #include "elf/mmix.h"
208 #include "opcode/mmix.h"
225 #define LOP_QUOTE_NEXT ((LOP << 24) | (LOP_QUOTE << 16) | 1)
226 #define SPEC_DATA_SECTION 80
227 #define LOP_SPEC_SECTION \
228 ((LOP << 24) | (LOP_SPEC << 16) | SPEC_DATA_SECTION)
230 /* Must be a power of two. If you change this to be >= 64k, you need a
231 new test-case; the ld test b-loc64k.d touches chunk-size problem areas. */
232 #define MMO_SEC_CONTENTS_CHUNK_SIZE (1 << 15)
234 /* An arbitrary number for the maximum length section name size. */
235 #define MAX_SECTION_NAME_SIZE (1024 * 1024)
237 /* A quite arbitrary number for the maximum length section size. */
238 #define MAX_ARTIFICIAL_SECTION_SIZE (1024 * 1024 * 1024)
240 #define MMO3_WCHAR 0x80
241 #define MMO3_LEFT 0x40
242 #define MMO3_MIDDLE 0x20
243 #define MMO3_RIGHT 0x10
244 #define MMO3_TYPEBITS 0xf
245 #define MMO3_REGQUAL_BITS 0xf
248 #define MMO3_SYMBITS 0x2f
250 /* Put these everywhere in new code. */
251 #define FATAL_DEBUG \
252 _bfd_abort (__FILE__, __LINE__, \
253 "Internal: Non-debugged code (test-case missing)")
255 #define BAD_CASE(x) \
256 _bfd_abort (__FILE__, __LINE__, \
259 enum mmo_sym_type { mmo_reg_sym, mmo_undef_sym, mmo_data_sym, mmo_abs_sym};
261 /* When scanning the mmo file, a linked list of mmo_symbol
262 structures is built to represent the symbol table (if there is
267 struct mmo_symbol *next;
270 enum mmo_sym_type sym_type;
274 struct mmo_data_list_struct
276 struct mmo_data_list_struct *next;
279 bfd_size_type allocated_size;
283 typedef struct mmo_data_list_struct mmo_data_list_type;
285 struct mmo_symbol_trie
287 struct mmo_symbol_trie *left;
288 struct mmo_symbol_trie *right;
289 struct mmo_symbol_trie *middle;
293 /* A zero name means there's nothing here. */
294 struct mmo_symbol sym;
297 /* The mmo tdata information. */
299 struct mmo_data_struct
301 struct mmo_symbol *symbols;
302 struct mmo_symbol *symtail;
305 /* File representation of time (NULL) when this file was created. */
308 /* When we're reading bytes recursively, check this occasionally.
309 Also holds write errors. */
310 bfd_boolean have_error;
312 /* Max symbol length that may appear in the lop_stab table. Note that
313 this table might just hold a subset of symbols for not-really large
314 programs, as it can only be 65536 * 4 bytes large. */
315 int max_symbol_length;
317 /* Here's the symbol we build in lop_stab. */
318 char *lop_stab_symbol;
320 /* Index into lop_stab_symbol for the next character when parsing the
321 symbol information. */
324 /* When creating arbitrary sections, we need to count section numbers. */
327 /* When writing or reading byte-wise, we need to count the bytes
328 within a 32-bit word. */
331 /* We also need a buffer to hold the bytes we count reading or writing. */
334 /* Whether we've calculated symbol consistency requirement yet. We do this
335 when-needed, which must be at some time after all section
336 contents is known. */
337 bfd_boolean symbol_consistency_override_calculated;
339 /* Whether to consistency-check symbol values, in particular "Main". */
340 bfd_boolean ignore_symbol_consistency;
343 typedef struct mmo_data_struct tdata_type;
345 struct mmo_section_data_struct
347 mmo_data_list_type *head;
348 mmo_data_list_type *tail;
351 #define mmo_section_data(sec) \
352 ((struct mmo_section_data_struct *) (sec)->used_by_bfd)
354 /* These structures are used in bfd_map_over_sections constructs. */
356 /* Used when writing out sections; all but the register contents section
357 which is stored in reg_section. */
358 struct mmo_write_sec_info
360 asection *reg_section;
364 /* Used when trying to find a section corresponding to addr. */
365 struct mmo_find_sec_info
371 static bfd_boolean mmo_bfd_copy_private_bfd_data (bfd *, bfd *);
372 static void mmo_write_section_unless_reg_contents (bfd *, asection *, void *);
373 static void mmo_find_sec_w_addr (bfd *, asection *, void *);
374 static void mmo_find_sec_w_addr_grow (bfd *, asection *, void *);
375 static asection *mmo_make_section (bfd *, const char *);
376 static void mmo_get_symbol_info (bfd *, asymbol *, symbol_info *);
377 static void mmo_print_symbol (bfd *, void *, asymbol *,
378 bfd_print_symbol_type);
379 static void mmo_init (void);
380 static bfd_boolean mmo_mkobject (bfd *);
381 static bfd_boolean mmo_scan (bfd *);
382 static asection *mmo_decide_section (bfd *, bfd_vma);
383 static asection *mmo_get_generic_spec_data_section (bfd *, int);
384 static asection *mmo_get_spec_section (bfd *, int);
385 static INLINE bfd_byte *mmo_get_loc (asection *, bfd_vma, int);
386 static void mmo_xore_64 (asection *, bfd_vma vma, bfd_vma value);
387 static void mmo_xore_32 (asection *, bfd_vma vma, unsigned int);
388 static void mmo_xore_16 (asection *, bfd_vma vma, unsigned int);
389 static const bfd_target *mmo_object_p (bfd *);
390 static void mmo_map_set_sizes (bfd *, asection *, void *);
391 static bfd_boolean mmo_get_symbols (bfd *);
392 static bfd_boolean mmo_create_symbol (bfd *, const char *, bfd_vma,
393 enum mmo_sym_type, unsigned int);
394 static bfd_boolean mmo_get_section_contents (bfd *, asection *, void *,
395 file_ptr, bfd_size_type);
396 static long mmo_get_symtab_upper_bound (bfd *);
397 static long mmo_canonicalize_symtab (bfd *, asymbol **);
398 static void mmo_get_symbol_info (bfd *, asymbol *, symbol_info *);
399 static void mmo_print_symbol (bfd *, void *, asymbol *,
400 bfd_print_symbol_type);
401 static bfd_boolean mmo_set_section_contents (bfd *, sec_ptr, const void *,
402 file_ptr, bfd_size_type);
403 static int mmo_sizeof_headers (bfd *, struct bfd_link_info *);
404 static bfd_boolean mmo_internal_write_header (bfd *);
405 static bfd_boolean mmo_internal_write_post (bfd *, int, asection *);
406 static bfd_boolean mmo_internal_add_3_sym (bfd *, struct mmo_symbol_trie *,
407 const struct mmo_symbol *);
408 static unsigned int mmo_internal_3_length (bfd *, struct mmo_symbol_trie *);
409 static void mmo_internal_3_dump (bfd *, struct mmo_symbol_trie *);
410 static void mmo_beb128_out (bfd *, int, int);
411 static bfd_boolean mmo_internal_write_section (bfd *, asection *);
412 static void mmo_write_tetra (bfd *, unsigned int);
413 static void mmo_write_tetra_raw (bfd *, unsigned int);
414 static void mmo_write_octa (bfd *, bfd_vma);
415 static void mmo_write_octa_raw (bfd *, bfd_vma);
416 static bfd_boolean mmo_write_chunk (bfd *, const bfd_byte *, unsigned int);
417 static bfd_boolean mmo_flush_chunk (bfd *);
418 static bfd_boolean mmo_write_loc_chunk (bfd *, bfd_vma, const bfd_byte *,
419 unsigned int, bfd_vma *);
420 static bfd_boolean mmo_write_chunk_list (bfd *, mmo_data_list_type *);
421 static bfd_boolean mmo_write_loc_chunk_list (bfd *, mmo_data_list_type *);
422 static bfd_boolean mmo_write_symbols_and_terminator (bfd *);
423 static flagword mmo_sec_flags_from_bfd_flags (flagword);
424 static flagword bfd_sec_flags_from_mmo_flags (flagword);
425 static bfd_byte mmo_get_byte (bfd *);
426 static void mmo_write_byte (bfd *, bfd_byte);
427 static bfd_boolean mmo_new_section_hook (bfd *, asection *);
428 static int mmo_sort_mmo_symbols (const void *, const void *);
429 static bfd_boolean mmo_write_object_contents (bfd *);
430 static bfd_boolean mmo_write_section_description (bfd *, asection *);
431 static bfd_boolean mmo_has_leading_or_trailing_zero_tetra_p (bfd *,
434 /* Global "const" variables initialized once. Must not depend on
435 particular input or caller; put such things into the bfd or elsewhere.
436 Look ma, no static per-invocation data! */
439 char valid_mmo_symbol_character_set[/* A-Z a-z (we assume consecutive
440 codes; sorry EBCDIC:ers!). */
441 + 'Z' - 'A' + 1 + 'z' - 'a' + 1
446 /* Codes higher than 126. */
452 /* Get section SECNAME or create one if it doesn't exist. When creating
453 one, new memory for the name is allocated. */
456 mmo_make_section (bfd *abfd, const char *secname)
458 asection *sec = bfd_get_section_by_name (abfd, secname);
462 char *newsecname = strdup (secname);
464 if (newsecname == NULL)
467 /* xgettext:c-format */
468 (_("%B: No core to allocate section name %s\n"),
470 bfd_set_error (bfd_error_system_call);
473 sec = bfd_make_section (abfd, newsecname);
479 /* Nothing to do, but keep as a placeholder if we need it.
480 Note that state that might differ between bfd:s must not be initialized
481 here, nor must it be static. Add it to tdata information instead. */
486 static bfd_boolean inited = FALSE;
489 static const char letters[]
490 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789:_";
496 /* Fill in the set of valid symbol characters. */
497 strcpy (valid_mmo_symbol_character_set, letters);
498 i = strlen (letters);
500 for (j = 126; j < 256; j++)
501 valid_mmo_symbol_character_set[i++] = j;
504 /* Check whether an existing file is an mmo file. */
506 static const bfd_target *
507 mmo_object_p (bfd *abfd)
514 if (bfd_stat (abfd, &statbuf) < 0
515 || bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
516 || bfd_bread (b, 4, abfd) != 4)
519 /* All mmo files are a multiple of four bytes long.
520 Only recognize version one. */
521 if ((statbuf.st_size % 4) != 0
522 || b[0] != LOP || b[1] != LOP_PRE || b[2] != 1)
525 /* Get the last 32-bit word. */
526 if (bfd_seek (abfd, (file_ptr) statbuf.st_size - 4, SEEK_SET) != 0
527 || bfd_bread (b, 4, abfd) != 4)
530 /* Check if the file ends in a lop_end lopcode. */
531 if (b[0] != LOP || b[1] != LOP_END || ! mmo_mkobject (abfd))
534 /* Compute an upper bound on the max symbol length. Not really
535 important as all of the symbol information can only be 256k. */
536 abfd->tdata.mmo_data->max_symbol_length = (b[2] * 256 + b[3]) * 4;
537 abfd->tdata.mmo_data->lop_stab_symbol
538 = bfd_malloc (abfd->tdata.mmo_data->max_symbol_length + 1);
540 if (abfd->tdata.mmo_data->lop_stab_symbol == NULL)
543 /* xgettext:c-format */
544 (_("%B: No core to allocate a symbol %d bytes long\n"),
545 abfd, abfd->tdata.mmo_data->max_symbol_length);
549 /* Read in everything. */
550 if (! mmo_scan (abfd))
551 goto bad_format_free;
553 if (abfd->symcount > 0)
554 abfd->flags |= HAS_SYMS;
556 /* You'll have to tweak this if you want to use this format for other
557 arches (not recommended due to its small-size limitations). Look at
558 the ELF format for how to make it target-generic. */
559 if (! bfd_default_set_arch_mach (abfd, bfd_arch_mmix, 0))
560 goto bad_format_free;
565 free (abfd->tdata.mmo_data->lop_stab_symbol);
567 bfd_set_error (bfd_error_wrong_format);
572 /* Set up the mmo tdata information. */
575 mmo_mkobject (bfd *abfd)
579 if (abfd->tdata.mmo_data == NULL)
583 /* All fields are zero-initialized, so we don't have to explicitly
585 tdata_type *tdata = (tdata_type *) bfd_zmalloc (sizeof (tdata_type));
589 created = time (NULL);
590 bfd_put_32 (abfd, created, tdata->created);
592 abfd->tdata.mmo_data = tdata;
599 mmo_section_has_contents (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *p ATTRIBUTE_UNUSED)
601 /* The point is to match what --extract-symbols does (well, negated). */
602 return bfd_get_section_size (sec) != 0;
605 /* Find out whether we should omit symbol consistency checks for this
606 bfd and cache the value.
608 This function must only be called when all section contents is
609 known. However, calculating symbol consistency at the time the
610 private BFD data is initialized is too late for some uses. */
613 mmo_ignore_symbol_consistency (bfd *abfd)
615 if (!abfd->tdata.mmo_data->symbol_consistency_override_calculated)
617 abfd->tdata.mmo_data->ignore_symbol_consistency =
618 bfd_sections_find_if (abfd, mmo_section_has_contents, NULL) == NULL;
620 abfd->tdata.mmo_data->symbol_consistency_override_calculated = TRUE;
623 return abfd->tdata.mmo_data->ignore_symbol_consistency;
627 mmo_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
629 if (bfd_get_flavour (ibfd) != bfd_target_mmo_flavour
630 || bfd_get_flavour (obfd) != bfd_target_mmo_flavour)
633 /* Copy the time the copied-from file was created. If people want the
634 time the file was last *modified*, they have that in the normal file
636 memcpy (obfd->tdata.mmo_data->created, ibfd->tdata.mmo_data->created,
637 sizeof (obfd->tdata.mmo_data->created));
641 /* Helper functions for mmo_decide_section, used through
642 bfd_map_over_sections. */
645 mmo_find_sec_w_addr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *p)
647 struct mmo_find_sec_info *infop = (struct mmo_find_sec_info *) p;
648 bfd_vma vma = bfd_get_section_vma (abfd, sec);
650 /* Ignore sections that aren't loaded. */
651 if ((bfd_get_section_flags (abfd, sec) & (SEC_LOAD | SEC_ALLOC))
652 != (SEC_LOAD | SEC_ALLOC))
655 if (infop->addr >= vma && infop->addr < vma + sec->size)
660 mmo_find_sec_w_addr_grow (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *p)
662 struct mmo_find_sec_info *infop = (struct mmo_find_sec_info *) p;
663 bfd_vma vma = bfd_get_section_vma (abfd, sec);
665 /* Ignore sections that aren't loaded. */
666 if ((bfd_get_section_flags (abfd, sec) & (SEC_LOAD | SEC_ALLOC))
667 != (SEC_LOAD | SEC_ALLOC))
670 if (infop->addr >= vma && infop->addr < vma + MAX_ARTIFICIAL_SECTION_SIZE)
674 /* Find a section that corresponds to a VMA. Automatically create .text
675 or .data and set current section to it, depending on what vma. If we
676 can't deduce a section, make one up as ".MMIX.sec.N", where N is an
677 increasing number. */
680 mmo_decide_section (bfd *abfd, bfd_vma vma)
682 asection *sec = NULL;
683 char sec_name[sizeof (".MMIX.sec.") + 20];
684 struct mmo_find_sec_info info;
689 /* First see if there's a section that would match exactly. */
690 bfd_map_over_sections (abfd, mmo_find_sec_w_addr, &info);
692 if (info.sec != NULL)
695 /* If there's no such section, try and expand one of the existing ones,
696 up to a limit. Make sure we have .text and .data before we try that;
697 create them corresponding to expected addresses and set flags to make
698 them match the "loaded and with contents" expectation. */
699 if ((vma >> 56) == 0)
701 sec = bfd_make_section_old_way (abfd, MMO_TEXT_SECTION_NAME);
706 if (! sec->user_set_vma && ! bfd_set_section_vma (abfd, sec, vma))
709 if (! bfd_set_section_flags (abfd, sec,
710 bfd_get_section_flags (abfd, sec)
711 | SEC_CODE | SEC_LOAD | SEC_ALLOC))
714 else if ((vma >> 56) == 0x20)
716 sec = bfd_make_section_old_way (abfd, MMO_DATA_SECTION_NAME);
721 if (! sec->user_set_vma && ! bfd_set_section_vma (abfd, sec, vma))
724 if (! bfd_set_section_flags (abfd, sec,
725 bfd_get_section_flags (abfd, sec)
726 | SEC_LOAD | SEC_ALLOC))
730 bfd_map_over_sections (abfd, mmo_find_sec_w_addr_grow, &info);
732 if (info.sec != NULL)
735 /* If there's still no suitable section, make a new one. */
736 sprintf (sec_name, ".MMIX.sec.%d", abfd->tdata.mmo_data->sec_no++);
737 sec = mmo_make_section (abfd, sec_name);
739 if (! sec->user_set_vma && ! bfd_set_section_vma (abfd, sec, vma))
742 if (! bfd_set_section_flags (abfd, sec,
743 bfd_get_section_flags (abfd, sec)
744 | SEC_LOAD | SEC_ALLOC))
749 /* Xor in a 64-bit value VALUE at VMA. */
752 mmo_xore_64 (asection *sec, bfd_vma vma, bfd_vma value)
754 bfd_byte *loc = mmo_get_loc (sec, vma, 8);
755 bfd_vma prev = bfd_get_64 (sec->owner, loc);
758 bfd_put_64 (sec->owner, value, loc);
761 /* Xor in a 32-bit value VALUE at VMA. */
764 mmo_xore_32 (asection *sec, bfd_vma vma, unsigned int value)
766 bfd_byte *loc = mmo_get_loc (sec, vma, 4);
767 unsigned int prev = bfd_get_32 (sec->owner, loc);
770 bfd_put_32 (sec->owner, value, loc);
773 /* Xor in a 16-bit value VALUE at VMA. */
776 mmo_xore_16 (asection *sec, bfd_vma vma, unsigned int value)
778 bfd_byte *loc = mmo_get_loc (sec, vma, 2);
779 unsigned int prev = bfd_get_16 (sec->owner, loc);
782 bfd_put_16 (sec->owner, value, loc);
785 /* Write a 32-bit word to output file, no lop_quote generated. */
788 mmo_write_tetra_raw (bfd *abfd, unsigned int value)
792 bfd_put_32 (abfd, value, buf);
794 if (bfd_bwrite (buf, 4, abfd) != 4)
795 abfd->tdata.mmo_data->have_error = TRUE;
798 /* Write a 32-bit word to output file; lop_quote if necessary. */
801 mmo_write_tetra (bfd *abfd, unsigned int value)
803 if (((value >> 24) & 0xff) == LOP)
804 mmo_write_tetra_raw (abfd, LOP_QUOTE_NEXT);
806 mmo_write_tetra_raw (abfd, value);
809 /* Write a 64-bit word to output file, perhaps with lop_quoting. */
812 mmo_write_octa (bfd *abfd, bfd_vma value)
814 mmo_write_tetra (abfd, (unsigned int) (value >> 32));
815 mmo_write_tetra (abfd, (unsigned int) value);
818 /* Write a 64-bit word to output file, without lop_quoting. */
821 mmo_write_octa_raw (bfd *abfd, bfd_vma value)
823 mmo_write_tetra_raw (abfd, (unsigned int) (value >> 32));
824 mmo_write_tetra_raw (abfd, (unsigned int) value);
827 /* Write quoted contents. Intended to be called multiple times in
828 sequence, followed by a call to mmo_flush_chunk. */
830 static INLINE bfd_boolean
831 mmo_write_chunk (bfd *abfd, const bfd_byte *loc, unsigned int len)
833 bfd_boolean retval = TRUE;
834 struct mmo_data_struct *mmop = abfd->tdata.mmo_data;
836 /* Fill up a tetra from bytes remaining from a previous chunk. */
837 if (mmop->byte_no != 0)
839 while (mmop->byte_no < 4 && len != 0)
841 mmop->buf[mmop->byte_no++] = *loc++;
845 if (mmop->byte_no == 4)
847 mmo_write_tetra (abfd, bfd_get_32 (abfd, mmop->buf));
855 mmo_write_tetra_raw (abfd, LOP_QUOTE_NEXT);
858 && ! mmop->have_error
859 && 4 == bfd_bwrite (loc, 4, abfd));
867 /* We must have flushed a previous remainder if we get one from
869 BFD_ASSERT (mmop->byte_no == 0);
870 memcpy (mmop->buf, loc, len);
875 mmop->have_error = TRUE;
879 /* Flush remaining bytes, from a previous mmo_write_chunk, zero-padded to
882 static INLINE bfd_boolean
883 mmo_flush_chunk (bfd *abfd)
885 if (abfd->tdata.mmo_data->byte_no != 0)
887 memset (abfd->tdata.mmo_data->buf + abfd->tdata.mmo_data->byte_no,
888 0, 4 - abfd->tdata.mmo_data->byte_no);
889 mmo_write_tetra (abfd,
890 bfd_get_32 (abfd, abfd->tdata.mmo_data->buf));
891 abfd->tdata.mmo_data->byte_no = 0;
894 return ! abfd->tdata.mmo_data->have_error;
897 /* Same, but from a list. */
899 static INLINE bfd_boolean
900 mmo_write_chunk_list (bfd *abfd, mmo_data_list_type *datap)
902 for (; datap != NULL; datap = datap->next)
903 if (! mmo_write_chunk (abfd, datap->data, datap->size))
906 return mmo_flush_chunk (abfd);
909 /* Write a lop_loc and some contents. A caller needs to call
910 mmo_flush_chunk after calling this function. The location is only
911 output if different than *LAST_VMAP, which is updated after this call. */
914 mmo_write_loc_chunk (bfd *abfd, bfd_vma vma, const bfd_byte *loc,
915 unsigned int len, bfd_vma *last_vmap)
917 /* Find an initial and trailing section of zero (aligned) tetras; we don't
918 need to write out zeros. FIXME: When we do this, we should emit
919 section size and address specifiers, else objcopy can't always perform
920 an identity translation. Only do this if we *don't* have left-over
921 data from a previous write (and will not add any) or else the vma of
922 this chunk is *not* the next address, because then data isn't
923 tetrabyte-aligned and we're concatenating to that left-over data. */
926 && (abfd->tdata.mmo_data->byte_no == 0 || vma != *last_vmap))
928 while (len > 4 && bfd_get_32 (abfd, loc) == 0)
936 while (len > 4 && bfd_get_32 (abfd, loc + len - 4) == 0)
940 /* Only write out the location if it's different than the one the caller
941 (supposedly) previously handled, accounting for omitted leading zeros. */
942 if (vma != *last_vmap)
944 /* We might be in the middle of a sequence. */
945 mmo_flush_chunk (abfd);
947 /* This should not happen during normal usage, but can presumably
948 happen with an erroneous linker-script, so handle gracefully.
949 Avoid Knuth-specific terms in the message, such as "tetrabyte".
950 Note that this function will get non-4-multiple lengths and
951 unaligned vmas but those come in tuples (mostly pairs) and are
952 continuous (i.e. the if-condition above false) and they are
953 group-wise aligned. */
957 /* xgettext:c-format */
958 (_("%B: attempt to emit contents at non-multiple-of-4"
961 bfd_set_error (bfd_error_bad_value);
965 /* We always write the location as 64 bits; no use saving bytes
967 mmo_write_tetra_raw (abfd, (LOP << 24) | (LOP_LOC << 16) | 2);
968 mmo_write_octa_raw (abfd, vma);
971 /* Update to reflect end of this chunk, with trailing zeros omitted. */
972 *last_vmap = vma + len;
974 return (! abfd->tdata.mmo_data->have_error
975 && mmo_write_chunk (abfd, loc, len));
978 /* Same, but from a list. */
980 static INLINE bfd_boolean
981 mmo_write_loc_chunk_list (bfd *abfd, mmo_data_list_type *datap)
983 /* Get an address different than the address of the first chunk. */
984 bfd_vma last_vma = datap ? datap->where - 1 : 0;
986 for (; datap != NULL; datap = datap->next)
987 if (! mmo_write_loc_chunk (abfd, datap->where, datap->data, datap->size,
991 return mmo_flush_chunk (abfd);
994 /* Make a .MMIX.spec_data.N section. */
997 mmo_get_generic_spec_data_section (bfd *abfd, int spec_data_number)
1000 char secname[sizeof (MMIX_OTHER_SPEC_SECTION_PREFIX) + 20]
1001 = MMIX_OTHER_SPEC_SECTION_PREFIX;
1003 sprintf (secname + strlen (MMIX_OTHER_SPEC_SECTION_PREFIX),
1004 "%d", spec_data_number);
1006 sec = mmo_make_section (abfd, secname);
1011 /* Make a special section for SPEC_DATA_NUMBER. If it is the one we use
1012 ourselves, parse some of its data to get at the section name. */
1015 mmo_get_spec_section (bfd *abfd, int spec_data_number)
1020 unsigned int secname_length;
1022 bfd_vma section_length;
1023 bfd_vma section_vma;
1024 mmo_data_list_type *loc;
1028 /* If this isn't the "special" special data, then make a placeholder
1030 if (spec_data_number != SPEC_DATA_SECTION)
1031 return mmo_get_generic_spec_data_section (abfd, spec_data_number);
1033 /* Seek back to this position if there was a format error. */
1034 orig_pos = bfd_tell (abfd);
1036 /* Read the length (in 32-bit words). */
1037 if (bfd_bread (buf, 4, abfd) != 4)
1042 if (buf[1] != LOP_QUOTE)
1045 if (bfd_bread (buf, 4, abfd) != 4)
1049 /* We don't care to keep the name length accurate. It's
1051 secname_length = bfd_get_32 (abfd, buf) * 4;
1053 /* Check section name length for sanity. */
1054 if (secname_length > MAX_SECTION_NAME_SIZE)
1057 /* This should be free'd regardless if a section is created. */
1058 secname = bfd_malloc (secname_length + 1);
1059 secname[secname_length] = 0;
1061 for (i = 0; i < secname_length / 4; i++)
1063 if (bfd_bread (secname + i * 4, 4, abfd) != 4)
1064 goto format_error_free;
1066 if (secname[i * 4] == (char) LOP)
1068 /* A bit of overkill, but we handle char 0x98 in a section name,
1069 and recognize misparsing. */
1070 if (secname[i * 4 + 1] != LOP_QUOTE
1071 || bfd_bread (secname + i * 4, 4, abfd) != 4)
1072 /* Whoops. We thought this was a name, and now we found a
1073 non-lop_quote lopcode before we parsed the whole length of
1074 the name. Signal end-of-file in the same manner. */
1075 goto format_error_free;
1079 /* Get the section flags. */
1080 if (bfd_bread (buf, 4, abfd) != 4
1082 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1083 goto format_error_free;
1085 flags = bfd_get_32 (abfd, buf);
1087 /* Get the section length. */
1088 if (bfd_bread (buf, 4, abfd) != 4
1090 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1091 goto format_error_free;
1093 section_length = (bfd_vma) bfd_get_32 (abfd, buf) << 32;
1095 /* That's the first, high-part. Now get the low part. */
1097 if (bfd_bread (buf, 4, abfd) != 4
1099 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1100 goto format_error_free;
1102 section_length |= (bfd_vma) bfd_get_32 (abfd, buf);
1104 /* Check the section length for sanity. */
1105 if (section_length > MAX_ARTIFICIAL_SECTION_SIZE)
1106 goto format_error_free;
1108 /* Get the section VMA. */
1109 if (bfd_bread (buf, 4, abfd) != 4
1111 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1112 goto format_error_free;
1114 section_vma = (bfd_vma) bfd_get_32 (abfd, buf) << 32;
1116 /* That's the first, high-part. Now get the low part. */
1117 if (bfd_bread (buf, 4, abfd) != 4
1119 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1120 goto format_error_free;
1122 section_vma |= (bfd_vma) bfd_get_32 (abfd, buf);
1124 sec = mmo_make_section (abfd, secname);
1129 /* We allocate a buffer here for the advertised size, with head room for
1130 tetrabyte alignment. */
1131 loc = bfd_zmalloc (section_length + 3
1132 + sizeof (struct mmo_data_list_struct));
1136 /* Use a TETRA-rounded size for the allocated buffer; we set the
1137 "visible" section size below. */
1138 loc->size = (section_length + 3) & ~3;
1140 /* Add in the section flags we found to those bfd entered during this
1141 process and set the contents. */
1142 if (! bfd_set_section_flags (abfd, sec,
1143 bfd_sec_flags_from_mmo_flags (flags)
1144 | bfd_get_section_flags (abfd, sec)
1145 | (section_length != 0 ? SEC_HAS_CONTENTS : 0))
1146 || ! bfd_set_section_size (abfd, sec, sec->size + section_length)
1147 /* Set VMA only for the first occurrence. */
1148 || (! sec->user_set_vma
1149 && ! bfd_set_section_vma (abfd, sec, section_vma)))
1151 /* If we get an error for any of the calls above, signal more than
1152 just a format error for the spec section. */
1157 if (mmo_section_data (sec)->tail != NULL)
1158 mmo_section_data (sec)->tail->next = loc;
1160 mmo_section_data (sec)->head = loc;
1161 mmo_section_data (sec)->tail = loc;
1162 loc->where = section_vma;
1169 if (bfd_seek (abfd, orig_pos, SEEK_SET) != 0)
1172 return mmo_get_generic_spec_data_section (abfd, spec_data_number);
1175 /* Read a byte, but read from file in multiples of 32-bit words. */
1178 mmo_get_byte (bfd *abfd)
1182 if (abfd->tdata.mmo_data->byte_no == 0)
1184 if (! abfd->tdata.mmo_data->have_error
1185 && bfd_bread (abfd->tdata.mmo_data->buf, 4, abfd) != 4)
1187 abfd->tdata.mmo_data->have_error = TRUE;
1189 /* A value somewhat safe against tripping on some inconsistency
1190 when mopping up after this error. */
1195 retval = abfd->tdata.mmo_data->buf[abfd->tdata.mmo_data->byte_no];
1196 abfd->tdata.mmo_data->byte_no = (abfd->tdata.mmo_data->byte_no + 1) % 4;
1201 /* Write a byte, in multiples of 32-bit words. */
1204 mmo_write_byte (bfd *abfd, bfd_byte value)
1206 abfd->tdata.mmo_data->buf[(abfd->tdata.mmo_data->byte_no++ % 4)] = value;
1207 if ((abfd->tdata.mmo_data->byte_no % 4) == 0)
1209 if (! abfd->tdata.mmo_data->have_error
1210 && bfd_bwrite (abfd->tdata.mmo_data->buf, 4, abfd) != 4)
1211 abfd->tdata.mmo_data->have_error = TRUE;
1215 /* Create a symbol. */
1218 mmo_create_symbol (bfd *abfd, const char *symname, bfd_vma addr, enum
1219 mmo_sym_type sym_type, unsigned int serno)
1221 struct mmo_symbol *n;
1223 n = (struct mmo_symbol *) bfd_alloc (abfd, sizeof (struct mmo_symbol));
1227 n->name = bfd_alloc (abfd, strlen (symname) + 1);
1228 if (n->name == NULL)
1231 strcpy (n->name, symname);
1234 n->sym_type = sym_type;
1237 if (abfd->tdata.mmo_data->symbols == NULL)
1238 abfd->tdata.mmo_data->symbols = n;
1240 abfd->tdata.mmo_data->symtail->next = n;
1241 abfd->tdata.mmo_data->symtail = n;
1246 /* Check that :Main equals the last octa of the .MMIX.reg_contents
1247 section, as it's the one place we're sure to pass when reading a mmo
1248 object. For written objects, we do it while setting the symbol
1250 if (strcmp (symname, MMIX_START_SYMBOL_NAME) == 0
1251 && bfd_get_start_address (abfd) != addr
1252 && !mmo_ignore_symbol_consistency (abfd))
1255 (_("%B: invalid mmo file: initialization value for $255"
1256 " is not `Main'\n"),
1258 bfd_set_error (bfd_error_bad_value);
1265 /* Read in symbols. */
1268 mmo_get_symbols (bfd *abfd)
1272 Symbol-table, mmo section mapping, File layout, mmo
1276 From mmixal.w (or really, the generated mmixal.tex) in the
1277 MMIXware package which also contains the @command{mmix} simulator:
1278 ``Symbols are stored and retrieved by means of a @samp{ternary
1279 search trie}, following ideas of Bentley and Sedgewick. (See
1280 ACM--SIAM Symp.@: on Discrete Algorithms @samp{8} (1997), 360--369;
1281 R.@:Sedgewick, @samp{Algorithms in C} (Reading, Mass.@:
1282 Addison--Wesley, 1998), @samp{15.4}.) Each trie node stores a
1283 character, and there are branches to subtries for the cases where
1284 a given character is less than, equal to, or greater than the
1285 character in the trie. There also is a pointer to a symbol table
1286 entry if a symbol ends at the current node.''
1288 So it's a tree encoded as a stream of bytes. The stream of bytes
1289 acts on a single virtual global symbol, adding and removing
1290 characters and signalling complete symbol points. Here, we read
1291 the stream and create symbols at the completion points.
1293 First, there's a control byte <<m>>. If any of the listed bits
1294 in <<m>> is nonzero, we execute what stands at the right, in
1298 | 0x40 - Traverse left trie.
1299 | (Read a new command byte and recurse.)
1302 | 0x2f - Read the next byte as a character and store it in the
1303 | current character position; increment character position.
1304 | Test the bits of <<m>>:
1307 | 0x80 - The character is 16-bit (so read another byte,
1308 | merge into current character.
1311 | 0xf - We have a complete symbol; parse the type, value
1312 | and serial number and do what should be done
1313 | with a symbol. The type and length information
1314 | is in j = (m & 0xf).
1316 | (MMO3_REGQUAL_BITS)
1317 | j == 0xf: A register variable. The following
1318 | byte tells which register.
1319 | j <= 8: An absolute symbol. Read j bytes as the
1320 | big-endian number the symbol equals.
1321 | A j = 2 with two zero bytes denotes an
1323 | j > 8: As with j <= 8, but add (0x20 << 56)
1324 | to the value in the following j - 8
1327 | Then comes the serial number, as a variant of
1328 | uleb128, but better named ubeb128:
1329 | Read bytes and shift the previous value left 7
1330 | (multiply by 128). Add in the new byte, repeat
1331 | until a byte has bit 7 set. The serial number
1332 | is the computed value minus 128.
1335 | 0x20 - Traverse middle trie. (Read a new command byte
1336 | and recurse.) Decrement character position.
1339 | 0x10 - Traverse right trie. (Read a new command byte and
1342 Let's look again at the <<lop_stab>> for the trivial file
1343 (@pxref{File layout}).
1345 | 0x980b0000 - lop_stab for ":Main" = 0, serial 1.
1352 This forms the trivial trie (note that the path between ``:'' and
1353 ``M'' is redundant):
1364 | 016e "n" is the last character in a full symbol, and
1365 | with a value represented in one byte.
1366 | 00 The value is 0.
1367 | 81 The serial number is 1. */
1369 bfd_byte m = mmo_get_byte (abfd);
1371 /* Check first if we have a bad hair day. */
1372 if (abfd->tdata.mmo_data->have_error)
1376 /* Traverse left trie. */
1377 mmo_get_symbols (abfd);
1379 if (m & MMO3_SYMBITS)
1381 bfd_byte c = mmo_get_byte (abfd);
1382 bfd_byte j = m & MMO3_TYPEBITS;
1384 enum mmo_sym_type sym_type;
1385 unsigned int serno = 0;
1390 bfd_byte c2 = mmo_get_byte (abfd);
1392 /* A two-byte character. We can't grok this, but neither can
1393 mmotype, for other cases than the second byte being zero. */
1397 abfd->tdata.mmo_data->lop_stab_symbol
1398 [abfd->tdata.mmo_data->symbol_position] = 0;
1401 /* xgettext:c-format */
1402 (_("%B: unsupported wide character sequence"
1403 " 0x%02X 0x%02X after symbol name starting with `%s'\n"),
1404 abfd, c, c2, abfd->tdata.mmo_data->lop_stab_symbol);
1405 bfd_set_error (bfd_error_bad_value);
1406 abfd->tdata.mmo_data->have_error = TRUE;
1413 abfd->tdata.mmo_data->lop_stab_symbol[abfd->tdata.mmo_data->symbol_position++] = c;
1414 abfd->tdata.mmo_data->lop_stab_symbol[abfd->tdata.mmo_data->symbol_position] = 0;
1416 if (j & MMO3_REGQUAL_BITS)
1418 if (j == MMO3_REGQUAL_BITS)
1420 sym_type = mmo_reg_sym;
1421 addr = mmo_get_byte (abfd);
1427 for (i = 0; i < j; i++)
1428 addr = (addr << 8) + mmo_get_byte (abfd);
1430 if (addr == 0 && j == MMO3_UNDEF)
1431 sym_type = mmo_undef_sym;
1433 sym_type = mmo_abs_sym;
1439 for (i = MMO3_DATA; i < j; i++)
1440 addr = (addr << 8) + mmo_get_byte (abfd);
1442 addr += (bfd_vma) 0x20 << 56;
1443 sym_type = mmo_data_sym;
1446 /* Get the serial number. */
1449 k = mmo_get_byte (abfd);
1450 serno = (serno << 7) + k;
1455 /* Got it. Now enter it. Skip a leading ":". */
1456 if (! abfd->tdata.mmo_data->have_error
1457 && ! mmo_create_symbol (abfd,
1458 abfd->tdata.mmo_data->lop_stab_symbol
1460 addr, sym_type, serno))
1461 abfd->tdata.mmo_data->have_error = TRUE;
1464 if (m & MMO3_MIDDLE)
1465 /* Traverse middle trie. */
1466 mmo_get_symbols (abfd);
1468 abfd->tdata.mmo_data->symbol_position--;
1472 /* Traverse right trie. */
1473 mmo_get_symbols (abfd);
1475 return ! abfd->tdata.mmo_data->have_error;
1478 /* Get the location of memory area [VMA..VMA + SIZE - 1], which we think
1479 is in section SEC. Adjust and reallocate zero-initialized contents.
1480 If there's new contents, allocate to the next multiple of
1481 MMO_SEC_CONTENTS_CHUNK_SIZE. */
1483 static INLINE bfd_byte *
1484 mmo_get_loc (asection *sec, bfd_vma vma, int size)
1486 bfd_size_type allocated_size;
1487 struct mmo_section_data_struct *sdatap = mmo_section_data (sec);
1488 struct mmo_data_list_struct *datap = sdatap->head;
1489 struct mmo_data_list_struct *entry;
1491 /* First search the list to see if we have the requested chunk in one
1492 piece, or perhaps if we have a suitable chunk with room to fit. */
1493 for (; datap != NULL; datap = datap->next)
1495 if (datap->where <= vma
1496 && datap->where + datap->size >= vma + size)
1497 return datap->data + vma - datap->where;
1498 else if (datap->where <= vma
1499 && datap->where + datap->allocated_size >= vma + size
1500 /* Only munch on the "allocated size" if it does not
1501 overlap the next chunk. */
1502 && (datap->next == NULL || datap->next->where >= vma + size))
1504 /* There was room allocated, but the size wasn't set to include
1506 datap->size += (vma + size) - (datap->where + datap->size);
1508 /* Update the section size. This happens only if we update the
1509 32-bit-aligned chunk size. Callers that have
1510 non-32-bit-aligned sections should do all allocation and
1511 size-setting by themselves or at least set the section size
1512 after the last allocating call to this function. */
1513 if (vma + size > sec->vma + sec->size)
1514 sec->size += (vma + size) - (sec->vma + sec->size);
1516 return datap->data + vma - datap->where;
1520 /* Not found; allocate a new block. First check in case we get a
1521 request for a size split up over several blocks; we'll have to return
1522 NULL for those cases, requesting the caller to split up the request.
1523 Requests with an address aligned on MMO_SEC_CONTENTS_CHUNK_SIZE bytes and
1524 for no more than MMO_SEC_CONTENTS_CHUNK_SIZE will always get resolved. */
1526 for (datap = sdatap->head; datap != NULL; datap = datap->next)
1527 if ((datap->where <= vma && datap->where + datap->size > vma)
1528 || (datap->where < vma + size
1529 && datap->where + datap->size >= vma + size))
1533 = (size + MMO_SEC_CONTENTS_CHUNK_SIZE - 1) & ~(MMO_SEC_CONTENTS_CHUNK_SIZE - 1);
1534 entry = (mmo_data_list_type *)
1535 bfd_zalloc (sec->owner, sizeof (mmo_data_list_type) + allocated_size);
1540 entry->allocated_size = allocated_size;
1542 datap = sdatap->head;
1544 /* Sort the records by address. Optimize for the common case of adding
1545 a record to the end of the list. */
1546 if (sdatap->tail != NULL && entry->where >= sdatap->tail->where)
1548 sdatap->tail->next = entry;
1550 sdatap->tail = entry;
1554 mmo_data_list_type **look;
1555 for (look = &sdatap->head;
1556 *look != NULL && (*look)->where < entry->where;
1557 look = &(*look)->next)
1559 entry->next = *look;
1561 if (entry->next == NULL)
1563 sdatap->tail = entry;
1565 /* We get here for the first time (at other times too) for this
1566 section. Say we have contents. */
1567 if (! bfd_set_section_flags (sec->owner, sec,
1568 bfd_get_section_flags (sec->owner, sec)
1569 | SEC_HAS_CONTENTS))
1574 /* Update the section size. This happens only when we add contents and
1575 re-size as we go. The section size will then be aligned to 32 bits. */
1576 if (vma + size > sec->vma + sec->size)
1577 sec->size += (vma + size) - (sec->vma + sec->size);
1581 /* Set sizes once we've read in all sections. */
1584 mmo_map_set_sizes (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1585 void *ignored ATTRIBUTE_UNUSED)
1587 sec->lma = sec->vma;
1590 /* Read the mmo file and turn it into sections. */
1593 mmo_scan (bfd *abfd)
1596 unsigned int lineno = 1;
1597 bfd_boolean error = FALSE;
1599 asection *sec = bfd_make_section_old_way (abfd, MMO_TEXT_SECTION_NAME);
1600 asection *non_spec_sec = NULL;
1601 bfd_vma non_spec_vma = 0;
1602 bfd_size_type nbytes_read = 0;
1603 /* Buffer with room to read a 64-bit value. */
1605 file_ptr stab_loc = -1;
1606 char *file_names[256];
1609 memset (file_names, 0, sizeof (file_names));
1611 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
1614 while ((nbytes_read = bfd_bread (buf, 4, abfd)) == 4)
1618 unsigned int y = bfd_get_8 (abfd, buf + 2);
1619 unsigned int z = bfd_get_8 (abfd, buf + 3);
1621 /* Change back to the original section for lopcodes other
1622 than LOP_QUOTE that comes after a LOP_SPEC. */
1623 if ((buf[1] != LOP_QUOTE || y != 0 || z != 1)
1624 && non_spec_sec != NULL)
1628 non_spec_sec = NULL;
1635 /* xgettext:c-format */
1636 (_("%B: invalid mmo file: unsupported lopcode `%d'\n"),
1638 bfd_set_error (bfd_error_bad_value);
1642 /* Quote the next 32-bit word. */
1643 if (y != 0 || z != 1)
1646 /* xgettext:c-format */
1647 (_("%B: invalid mmo file: expected YZ = 1"
1648 " got YZ = %d for lop_quote\n"),
1650 bfd_set_error (bfd_error_bad_value);
1653 if (bfd_bread (buf, 4, abfd) != 4)
1657 mmo_xore_32 (sec, vma, bfd_get_32 (abfd, buf));
1663 /* Set vma (and section). */
1664 vma = (bfd_vma) y << 56;
1667 /* Get a 32-bit value. */
1668 if (bfd_bread (buf, 4, abfd) != 4)
1671 vma += bfd_get_32 (abfd, buf);
1675 /* Get a 64-bit value. */
1676 if (bfd_bread (buf, 8, abfd) != 8)
1679 vma += bfd_get_64 (abfd, buf);
1684 /* xgettext:c-format */
1685 (_("%B: invalid mmo file: expected z = 1 or z = 2,"
1686 " got z = %d for lop_loc\n"),
1688 bfd_set_error (bfd_error_bad_value);
1692 /* When we decide which section the data goes into, we might
1693 create the section. If that happens, make sure the VMA at
1694 creation time is tetra-aligned. */
1695 sec = mmo_decide_section (abfd, vma & ~3);
1701 /* Move forward within the same section. */
1704 sec = mmo_decide_section (abfd, vma);
1710 /* A fixup: Store the current vma somewhere. Position using
1711 same format as LOP_LOC. */
1713 bfd_vma p = (bfd_vma) y << 56;
1718 /* Get a 32-bit value. */
1719 if (bfd_bread (buf, 4, abfd) != 4)
1722 p += bfd_get_32 (abfd, buf);
1726 /* Get a 64-bit value. */
1727 if (bfd_bread (buf, 8, abfd) != 8)
1730 p += bfd_get_64 (abfd, buf);
1735 /* xgettext:c-format */
1736 (_("%B: invalid mmo file: expected z = 1 or z = 2,"
1737 " got z = %d for lop_fixo\n"),
1739 bfd_set_error (bfd_error_bad_value);
1743 /* The section where we store this address might be a
1744 different one than the current section. */
1745 fixosec = mmo_decide_section (abfd, p);
1746 if (fixosec == NULL)
1748 mmo_xore_64 (fixosec, p, vma);
1753 /* A fixup: Store YZ of this lopcode into YZ at vma - 4 * yz. */
1755 unsigned int yz = (y * 256 + z);
1756 bfd_vma p = vma + 2 - 4 * yz;
1757 asection *fixrsec = mmo_decide_section (abfd, p);
1758 if (fixrsec == NULL)
1760 mmo_xore_16 (fixrsec, p, yz);
1765 /* A fixup, similar to lop_fixr, but taking larger numbers
1766 and can change branches into the opposite direction
1776 /* xgettext:c-format */
1777 (_("%B: invalid mmo file: expected y = 0,"
1778 " got y = %d for lop_fixrx\n"),
1780 bfd_set_error (bfd_error_bad_value);
1784 if (z != 16 && z != 24)
1787 /* xgettext:c-format */
1788 (_("%B: invalid mmo file: expected z = 16 or z = 24,"
1789 " got z = %d for lop_fixrx\n"),
1791 bfd_set_error (bfd_error_bad_value);
1795 /* Get the next 32-bit value. */
1796 if (bfd_bread (buf, 4, abfd) != 4)
1799 delta = bfd_get_32 (abfd, buf);
1801 /* Do an, ehm, involved calculation for the location of
1802 the fixup. See mmixal documentation for a verbose
1803 explanation. We follow it verbosely here for the
1806 p = vma - 4 * delta;
1807 else if (buf[0] == 1)
1808 p = vma - 4 * ((delta & 0xffffff) - (1 << z));
1812 /* xgettext:c-format */
1813 (_("%B: invalid mmo file: leading byte of operand word"
1814 " must be 0 or 1, got %d for lop_fixrx\n"),
1816 bfd_set_error (bfd_error_bad_value);
1820 fixrsec = mmo_decide_section (abfd, vma);
1821 if (fixrsec == NULL)
1823 mmo_xore_32 (fixrsec, p, delta);
1828 /* Set current file and perhaps the file name. Reset line
1832 char *fname = bfd_malloc (z * 4 + 1);
1837 /* xgettext:c-format */
1838 (_("%B: cannot allocate file name for file number %d,"
1840 abfd, y, z * 4 + 1);
1841 bfd_set_error (bfd_error_system_call);
1847 for (i = 0; i < z; i++)
1849 if (bfd_bread (fname + i * 4, 4, abfd) != 4)
1856 if (file_names[y] != NULL)
1859 /* xgettext:c-format */
1860 (_("%B: invalid mmo file: file number %d `%s',"
1861 " was already entered as `%s'\n"),
1862 abfd, y, fname, file_names[y]);
1863 bfd_set_error (bfd_error_bad_value);
1867 file_names[y] = fname;
1870 if (file_names[y] == NULL)
1873 /* xgettext:c-format */
1874 (_("%B: invalid mmo file: file name for number %d"
1875 " was not specified before use\n"),
1877 bfd_set_error (bfd_error_bad_value);
1885 /* Set line number. */
1886 lineno = y * 256 + z;
1887 /* FIXME: Create a sequence of mmo-specific line number
1888 entries for each section, then translate into canonical
1893 /* Special data follows until the next non-lop_quote
1897 sec = mmo_get_spec_section (abfd, y * 256 + z);
1906 /* We ignore header information, except we read in the
1907 creation time from the first 32-bit word with the time
1908 in seconds since era. */
1910 && bfd_bread (abfd->tdata.mmo_data->created, 4,
1914 for (i = 1; i < z; i++)
1915 if (bfd_bread (buf, 4, abfd) != 4)
1921 /* This tells of the contents of registers $Z..$255 at
1922 startup. We make a section out of it, with VMA = Z * 8,
1923 but only if Z != 255 or the contents is non-zero. */
1928 bfd_vma startaddr_octa;
1930 /* Read first octaword outside loop to simplify logic when
1931 excluding the Z == 255, octa == 0 case. */
1932 if (bfd_bread (buf, 8, abfd) != 8)
1935 first_octa = bfd_get_64 (abfd, buf);
1937 /* Don't emit contents for the trivial case which is
1938 always present; $255 pointing to Main. */
1942 = bfd_make_section_old_way (abfd,
1943 MMIX_REG_CONTENTS_SECTION_NAME);
1944 rsec->flags |= SEC_LINKER_CREATED;
1946 loc = mmo_get_loc (rsec, z * 8, (255 - z) * 8);
1947 bfd_put_64 (abfd, first_octa, loc);
1949 for (i = z + 1; i < 255; i++)
1951 if (bfd_bread (loc + (i - z) * 8, 8, abfd) != 8)
1955 /* Read out the last octabyte, and use it to set the
1957 if (bfd_bread (buf, 8, abfd) != 8)
1960 startaddr_octa = bfd_get_64 (abfd, buf);
1963 startaddr_octa = first_octa;
1965 if (! bfd_set_start_address (abfd, startaddr_octa))
1967 /* Currently this can't fail, but this should handle
1969 bfd_set_error (bfd_error_bad_value);
1976 /* We read in the symbols now, not later. */
1977 if (y != 0 || z != 0)
1980 /* xgettext:c-format */
1981 (_("%B: invalid mmo file: fields y and z of lop_stab"
1982 " non-zero, y: %d, z: %d\n"),
1984 bfd_set_error (bfd_error_bad_value);
1988 /* Save the location, so we can check that YZ in the LOP_END
1990 stab_loc = bfd_tell (abfd);
1992 /* It's not said that an MMO can be without symbols (though
1993 mmixal will refuse to assemble files without Main), but
1994 it seems it would still be a valid mmo-file, so allow it.
1995 We detect the absence of a symbol area in that the upper
1996 limit is computed (from the lop_end YZ field) as 0.
1997 Don't call mmo_get_symbols; it can only detect the end of
1998 a valid symbol trie, not the absence of one. */
1999 if (abfd->tdata.mmo_data->max_symbol_length != 0
2000 && ! mmo_get_symbols (abfd))
2006 /* This must be the last 32-bit word in an mmo file.
2008 struct stat statbuf;
2009 file_ptr curpos = bfd_tell (abfd);
2011 if (bfd_stat (abfd, &statbuf) < 0)
2014 if (statbuf.st_size != curpos)
2017 /* xgettext:c-format */
2018 (_("%B: invalid mmo file: lop_end not last item in"
2021 bfd_set_error (bfd_error_bad_value);
2025 /* Check that the YZ field is right. Subtract the size of
2026 this LOP_END in the calculation; YZ does not include
2028 if ((long) (y * 256 + z) * 4 != (curpos - stab_loc) - 4)
2031 /* xgettext:c-format */
2032 (_("%B: invalid mmo file: YZ of lop_end (%ld)"
2033 " not equal to the number of tetras to the preceding"
2034 " lop_stab (%ld)\n"),
2035 abfd, (long) (y * 256 + z),
2036 (long) (curpos - stab_loc - 4)/4);
2037 bfd_set_error (bfd_error_bad_value);
2041 bfd_map_over_sections (abfd, mmo_map_set_sizes, NULL);
2048 /* This wasn't a lopcode, so store it in the current section. */
2049 mmo_xore_32 (sec, vma & ~3, bfd_get_32 (abfd, buf));
2056 /* We know this file is a multiple of four bytes (checked in
2057 mmo_object_p), so if we got something other than 0, this was a bad
2058 file (although it's more likely we'll get 0 in that case too).
2059 If we got end-of-file, then there was no lop_stab, so the file has
2062 if (nbytes_read != 0)
2063 bfd_set_error (bfd_error_system_call);
2065 bfd_set_error (bfd_error_bad_value);
2070 /* Mark the .text and .data section with their normal attribute if they
2071 contain anything. This is not redundant wrt. mmo_decide_section,
2072 since that code might never execute, and conversely the alloc+code
2073 section flags must be set then. */
2074 sec = bfd_get_section_by_name (abfd, MMO_TEXT_SECTION_NAME);
2076 && (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)
2077 && ! bfd_set_section_flags (abfd, sec,
2078 bfd_get_section_flags (abfd, sec)
2079 | SEC_ALLOC | SEC_LOAD | SEC_CODE))
2082 sec = bfd_get_section_by_name (abfd, MMO_DATA_SECTION_NAME);
2084 && (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)
2085 && ! bfd_set_section_flags (abfd, sec,
2086 bfd_get_section_flags (abfd, sec)
2087 | SEC_ALLOC | SEC_LOAD))
2090 /* Free whatever resources we took. */
2091 for (i = 0; i < sizeof (file_names) / sizeof (file_names[0]); i++)
2093 free (file_names[i]);
2097 /* A hook to set up object file dependent section information. For mmo,
2098 we point out the shape of allocated section contents. */
2101 mmo_new_section_hook (bfd *abfd, asection *newsect)
2103 if (!newsect->used_by_bfd)
2105 /* We zero-fill all fields and assume NULL is represented by an all
2106 zero-bit pattern. */
2107 newsect->used_by_bfd
2108 = bfd_zalloc (abfd, sizeof (struct mmo_section_data_struct));
2109 if (!newsect->used_by_bfd)
2113 /* Always align to at least 32-bit words. */
2114 newsect->alignment_power = 2;
2115 return _bfd_generic_new_section_hook (abfd, newsect);
2118 /* We already have section contents loaded for sections that have
2122 mmo_get_section_contents (bfd *abfd ATTRIBUTE_UNUSED,
2126 bfd_size_type bytes_to_do)
2128 /* Iterate over diminishing chunk sizes, copying contents, like
2129 mmo_set_section_contents. */
2132 /* A minor song-and-dance to make sure we're not bitten by the
2133 distant possibility of the cast from bfd_vma to int making the
2134 chunk zero-sized. */
2136 = (int) bytes_to_do != 0 ? bytes_to_do : MMO_SEC_CONTENTS_CHUNK_SIZE;
2140 loc = mmo_get_loc (sec, sec->vma + offset, chunk_size);
2141 while (loc == NULL && (chunk_size /= 2) != 0);
2143 if (chunk_size == 0)
2146 memcpy (location, loc, chunk_size);
2148 location = (bfd_byte *) location + chunk_size;
2149 bytes_to_do -= chunk_size;
2150 offset += chunk_size;
2155 /* Return the amount of memory needed to read the symbol table. */
2158 mmo_get_symtab_upper_bound (bfd *abfd)
2160 return (abfd->symcount + 1) * sizeof (asymbol *);
2163 /* Sort mmo symbols by serial number. */
2166 mmo_sort_mmo_symbols (const void *arg1, const void *arg2)
2168 const struct mmo_symbol *sym1 = *(const struct mmo_symbol **) arg1;
2169 const struct mmo_symbol *sym2 = *(const struct mmo_symbol **) arg2;
2171 /* Sort by serial number first. */
2172 if (sym1->serno < sym2->serno)
2174 else if (sym1->serno > sym2->serno)
2177 /* Then sort by address of the table entries. */
2178 return ((const char *) arg1 - (const char *) arg2);
2181 /* Translate the symbol table. */
2184 mmo_canonicalize_symtab (bfd *abfd, asymbol **alocation)
2186 unsigned int symcount = bfd_get_symcount (abfd);
2190 csymbols = abfd->tdata.mmo_data->csymbols;
2191 if (csymbols == NULL && symcount != 0)
2194 struct mmo_symbol *s;
2195 struct mmo_symbol **msp;
2197 /* First we store the symbols into the table we'll return, then we
2198 qsort it on the serial number, with secondary on the address of
2199 the symbol, to preserve order if there would be non-unique serial
2201 for (s = abfd->tdata.mmo_data->symbols,
2202 msp = (struct mmo_symbol **) alocation;
2209 qsort (alocation, symcount, sizeof (struct mmo_symbol *),
2210 mmo_sort_mmo_symbols);
2212 csymbols = (asymbol *) bfd_alloc (abfd, symcount * sizeof (asymbol));
2213 if (csymbols == NULL)
2215 abfd->tdata.mmo_data->csymbols = csymbols;
2217 for (msp = (struct mmo_symbol **) alocation, c = csymbols;
2224 c->value = s->value;
2225 c->flags = BSF_GLOBAL;
2227 if (s->sym_type == mmo_data_sym)
2230 = bfd_get_section_by_name (abfd, MMO_DATA_SECTION_NAME);
2232 if (c->section == NULL)
2233 c->section = bfd_abs_section_ptr;
2235 c->value -= c->section->vma;
2237 else if (s->sym_type == mmo_undef_sym)
2238 c->section = bfd_und_section_ptr;
2239 else if (s->sym_type == mmo_reg_sym)
2242 = bfd_make_section_old_way (abfd, MMIX_REG_SECTION_NAME);
2243 c->section->flags |= SEC_LINKER_CREATED;
2248 = bfd_get_section_by_name (abfd, MMO_TEXT_SECTION_NAME);
2252 && c->value >= textsec->vma
2253 && c->value <= textsec->vma + textsec->size)
2255 c->section = textsec;
2256 c->value -= c->section->vma;
2258 /* In mmo, symbol types depend on the VMA. Therefore, if
2259 the data section isn't within the usual bounds, its
2260 symbols are marked as absolute. Correct that. This
2261 means we can't have absolute symbols with values matching
2262 data section addresses, but we also can't have with
2263 absolute symbols with values matching text section
2264 addresses. For such needs, use the ELF format. */
2266 = bfd_get_section_by_name (abfd,
2267 MMO_DATA_SECTION_NAME))
2269 && c->value >= datasec->vma
2270 && c->value <= datasec->vma + datasec->size)
2272 c->section = datasec;
2273 c->value -= c->section->vma;
2276 c->section = bfd_abs_section_ptr;
2283 /* Last, overwrite the incoming table with the right-type entries. */
2284 for (i = 0; i < symcount; i++)
2285 *alocation++ = csymbols++;
2291 /* Get information about a symbol. */
2294 mmo_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2295 asymbol *symbol, symbol_info *ret)
2297 bfd_symbol_info (symbol, ret);
2301 mmo_print_symbol (bfd *abfd, void *afile, asymbol *symbol,
2302 bfd_print_symbol_type how)
2304 FILE *file = (FILE *) afile;
2308 case bfd_print_symbol_name:
2309 fprintf (file, "%s", symbol->name);
2312 bfd_print_symbol_vandf (abfd, file, symbol);
2314 fprintf (file, " %-5s %s",
2315 symbol->section->name,
2320 /* We can't map a file directly into executable code, so the
2321 size of header information is irrelevant. */
2324 mmo_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
2325 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2330 /* Write the (section-neutral) file preamble. */
2333 mmo_internal_write_header (bfd *abfd)
2335 const char lop_pre_bfd[] = { LOP, LOP_PRE, 1, 1};
2337 if (bfd_bwrite (lop_pre_bfd, 4, abfd) != 4)
2340 /* Copy creation time of original file. */
2341 if (bfd_bwrite (abfd->tdata.mmo_data->created, 4, abfd) != 4)
2347 /* Write the LOP_POST record, with global register initializations.
2348 Z is the Z field of the LOP_POST, corresponding to 255 - number of
2349 registers at DATA. The Z = 255 field is filled in with the
2353 mmo_internal_write_post (bfd *abfd, int z, asection *sec)
2357 mmo_write_tetra_raw (abfd, (LOP << 24) | (LOP_POST << 16) | z);
2359 for (i = z; i < 255; i++)
2361 bfd_byte *data = mmo_get_loc (sec, i * 8, 8);
2363 if (bfd_bwrite (data, 8, abfd) != 8)
2367 /* For Z == $255, we always emit the start location; supposedly Main,
2368 but we have it handy at bfd_get_start_address. If we're called with
2369 Z == 255, don't assume DATA is valid. */
2370 bfd_put_64 (abfd, bfd_get_start_address (abfd), buf);
2372 return ! abfd->tdata.mmo_data->have_error && bfd_bwrite (buf, 8, abfd) == 8;
2375 /* Translate to and from BFD flags. This is to make sure that we don't
2376 get bitten by BFD flag number changes. */
2379 mmo_sec_flags_from_bfd_flags (flagword flags)
2381 flagword oflags = 0;
2383 if (flags & SEC_ALLOC)
2384 oflags |= MMO_SEC_ALLOC;
2385 if (flags & SEC_LOAD)
2386 oflags |= MMO_SEC_LOAD;
2387 if (flags & SEC_RELOC)
2388 oflags |= MMO_SEC_RELOC;
2389 if (flags & SEC_READONLY)
2390 oflags |= MMO_SEC_READONLY;
2391 if (flags & SEC_CODE)
2392 oflags |= MMO_SEC_CODE;
2393 if (flags & SEC_DATA)
2394 oflags |= MMO_SEC_DATA;
2395 if (flags & SEC_NEVER_LOAD)
2396 oflags |= MMO_SEC_NEVER_LOAD;
2397 if (flags & SEC_IS_COMMON)
2398 oflags |= MMO_SEC_IS_COMMON;
2399 if (flags & SEC_DEBUGGING)
2400 oflags |= MMO_SEC_DEBUGGING;
2406 bfd_sec_flags_from_mmo_flags (flagword flags)
2408 flagword oflags = 0;
2410 if (flags & MMO_SEC_ALLOC)
2411 oflags |= SEC_ALLOC;
2412 if (flags & MMO_SEC_LOAD)
2414 if (flags & MMO_SEC_RELOC)
2415 oflags |= SEC_RELOC;
2416 if (flags & MMO_SEC_READONLY)
2417 oflags |= SEC_READONLY;
2418 if (flags & MMO_SEC_CODE)
2420 if (flags & MMO_SEC_DATA)
2422 if (flags & MMO_SEC_NEVER_LOAD)
2423 oflags |= SEC_NEVER_LOAD;
2424 if (flags & MMO_SEC_IS_COMMON)
2425 oflags |= SEC_IS_COMMON;
2426 if (flags & MMO_SEC_DEBUGGING)
2427 oflags |= SEC_DEBUGGING;
2432 /* Return TRUE iff the leading or trailing tetrabyte in SEC is defined and
2436 mmo_has_leading_or_trailing_zero_tetra_p (bfd *abfd, asection *sec)
2438 bfd_vma secaddr = bfd_get_section_vma (abfd, sec);
2443 if (bfd_get_32 (abfd, mmo_get_loc (sec, secaddr, 4)) == 0
2444 && bfd_get_32 (abfd,
2445 mmo_get_loc (sec, secaddr + sec->size - 4, 4)) == 0)
2451 /* Write a section. */
2454 mmo_internal_write_section (bfd *abfd, asection *sec)
2456 /* We do it differently depending on what section this is:
2458 ".text": Output, prepended by information about the first source file
2459 (not yet implemented.)
2463 (".MMIX.reg_contents": Not handled here.)
2465 Anything else: Output inside a lop_spec 80, in the format described
2468 if (strcmp (sec->name, MMO_TEXT_SECTION_NAME) == 0)
2470 bfd_vma secaddr = bfd_get_section_vma (abfd, sec);
2472 /* Because leading and trailing zeros are omitted in output, we need to
2473 specify the section boundaries so they're correct when the file
2474 is read in again. That's also the case if this section is
2475 specified as not within its usual boundaries or alignments. */
2477 && (secaddr + sec->size >= (bfd_vma) 1 << 56
2478 || (secaddr & 3) != 0
2479 || (sec->size & 3) != 0
2480 || mmo_has_leading_or_trailing_zero_tetra_p (abfd, sec)))
2482 if (!mmo_write_section_description (abfd, sec))
2486 /* FIXME: Output source file name and line number. */
2487 return mmo_write_loc_chunk_list (abfd, mmo_section_data (sec)->head);
2489 else if (strcmp (sec->name, MMO_DATA_SECTION_NAME) == 0)
2491 bfd_vma secaddr = bfd_get_section_vma (abfd, sec);
2493 /* Same goes as for MMO_TEXT_SECTION_NAME above. */
2495 && (secaddr < (bfd_vma) 0x20 << 56
2496 || secaddr + sec->size >= (bfd_vma) 0x21 << 56
2497 || (secaddr & 3) != 0
2498 || (sec->size & 3) != 0
2499 || mmo_has_leading_or_trailing_zero_tetra_p (abfd, sec)))
2501 if (!mmo_write_section_description (abfd, sec))
2505 return mmo_write_loc_chunk_list (abfd, mmo_section_data (sec)->head);
2507 else if (strcmp (sec->name, MMIX_REG_CONTENTS_SECTION_NAME) == 0)
2508 /* Not handled here. */
2510 /* This would normally be an abort call since this can't happen, but
2511 we don't do that. */
2512 bfd_set_error (bfd_error_bad_value);
2515 else if (CONST_STRNEQ (sec->name, MMIX_OTHER_SPEC_SECTION_PREFIX))
2517 int n = atoi (sec->name + strlen (MMIX_OTHER_SPEC_SECTION_PREFIX));
2519 mmo_write_tetra_raw (abfd, (LOP << 24) | (LOP_SPEC << 16) | n);
2520 return (! abfd->tdata.mmo_data->have_error
2521 && mmo_write_chunk_list (abfd, mmo_section_data (sec)->head));
2523 /* Ignore sections that are just allocated or empty; we write out
2525 else if ((bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS) != 0
2528 if (!mmo_write_section_description (abfd, sec))
2531 /* Writing a LOP_LOC ends the LOP_SPEC data, and makes data actually
2533 if (bfd_get_section_flags (abfd, sec) & SEC_LOAD)
2534 return (! abfd->tdata.mmo_data->have_error
2535 && mmo_write_loc_chunk_list (abfd,
2536 mmo_section_data (sec)->head));
2537 return (! abfd->tdata.mmo_data->have_error
2538 && mmo_write_chunk_list (abfd, mmo_section_data (sec)->head));
2541 /* Some section without contents. */
2545 /* Write the description of a section, extended-mmo-style. */
2548 mmo_write_section_description (bfd *abfd, asection *sec)
2550 /* Keep the following document-comment formatted the way it is. */
2553 mmo section mapping, , Symbol-table, mmo
2557 The implementation in BFD uses special data type 80 (decimal) to
2558 encapsulate and describe named sections, containing e.g.@: debug
2559 information. If needed, any datum in the encapsulation will be
2560 quoted using lop_quote. First comes a 32-bit word holding the
2561 number of 32-bit words containing the zero-terminated zero-padded
2562 segment name. After the name there's a 32-bit word holding flags
2563 describing the section type. Then comes a 64-bit big-endian word
2564 with the section length (in bytes), then another with the section
2565 start address. Depending on the type of section, the contents
2566 might follow, zero-padded to 32-bit boundary. For a loadable
2567 section (such as data or code), the contents might follow at some
2568 later point, not necessarily immediately, as a lop_loc with the
2569 same start address as in the section description, followed by the
2570 contents. This in effect forms a descriptor that must be emitted
2571 before the actual contents. Sections described this way must not
2574 For areas that don't have such descriptors, synthetic sections are
2575 formed by BFD. Consecutive contents in the two memory areas
2576 @samp{0x0000@dots{}00} to @samp{0x01ff@dots{}ff} and
2577 @samp{0x2000@dots{}00} to @samp{0x20ff@dots{}ff} are entered in
2578 sections named <<.text>> and <<.data>> respectively. If an area
2579 is not otherwise described, but would together with a neighboring
2580 lower area be less than @samp{0x40000000} bytes long, it is joined
2581 with the lower area and the gap is zero-filled. For other cases,
2582 a new section is formed, named <<.MMIX.sec.@var{n}>>. Here,
2583 @var{n} is a number, a running count through the mmo file,
2587 A loadable section specified as:
2589 | .section secname,"ax"
2590 | TETRA 1,2,3,4,-1,-2009
2593 and linked to address @samp{0x4}, is represented by the sequence:
2595 | 0x98080050 - lop_spec 80
2596 | 0x00000002 - two 32-bit words for the section name
2597 | 0x7365636e - "secn"
2598 | 0x616d6500 - "ame\0"
2599 | 0x00000033 - flags CODE, READONLY, LOAD, ALLOC
2600 | 0x00000000 - high 32 bits of section length
2601 | 0x0000001c - section length is 28 bytes; 6 * 4 + 1 + alignment to 32 bits
2602 | 0x00000000 - high 32 bits of section address
2603 | 0x00000004 - section address is 4
2604 | 0x98010002 - 64 bits with address of following data
2605 | 0x00000000 - high 32 bits of address
2606 | 0x00000004 - low 32 bits: data starts at address 4
2612 | 0xfffff827 - -2009
2613 | 0x50000000 - 80 as a byte, padded with zeros.
2615 Note that the lop_spec wrapping does not include the section
2616 contents. Compare this to a non-loaded section specified as:
2619 | TETRA 200001,100002
2622 This, when linked to address @samp{0x200000000000001c}, is
2625 | 0x98080050 - lop_spec 80
2626 | 0x00000002 - two 32-bit words for the section name
2627 | 0x7365636e - "thir"
2628 | 0x616d6500 - "dsec"
2629 | 0x00000010 - flag READONLY
2630 | 0x00000000 - high 32 bits of section length
2631 | 0x0000000c - section length is 12 bytes; 2 * 4 + 2 + alignment to 32 bits
2632 | 0x20000000 - high 32 bits of address
2633 | 0x0000001c - low 32 bits of address 0x200000000000001c
2634 | 0x00030d41 - 200001
2635 | 0x000186a2 - 100002
2636 | 0x26280000 - 38, 40 as bytes, padded with zeros
2638 For the latter example, the section contents must not be
2639 loaded in memory, and is therefore specified as part of the
2640 special data. The address is usually unimportant but might
2641 provide information for e.g.@: the DWARF 2 debugging format. */
2643 mmo_write_tetra_raw (abfd, LOP_SPEC_SECTION);
2644 mmo_write_tetra (abfd, (strlen (sec->name) + 3) / 4);
2645 mmo_write_chunk (abfd, (bfd_byte *) sec->name, strlen (sec->name));
2646 mmo_flush_chunk (abfd);
2647 /* FIXME: We can get debug sections (.debug_line & Co.) with a section
2648 flag still having SEC_RELOC set. Investigate. This might be true
2649 for all alien sections; perhaps mmo.em should clear that flag. Might
2650 be related to weak references. */
2651 mmo_write_tetra (abfd,
2652 mmo_sec_flags_from_bfd_flags
2653 (bfd_get_section_flags (abfd, sec)));
2654 mmo_write_octa (abfd, sec->size);
2655 mmo_write_octa (abfd, bfd_get_section_vma (abfd, sec));
2659 /* We save up all data before output. */
2662 mmo_set_section_contents (bfd *abfd ATTRIBUTE_UNUSED, sec_ptr sec,
2663 const void *location, file_ptr offset,
2664 bfd_size_type bytes_to_do)
2666 /* Iterate over diminishing chunk sizes, copying contents. */
2669 /* A minor song-and-dance to make sure we're not bitten by the
2670 distant possibility of the cast from bfd_vma to int making the
2671 chunk zero-sized. */
2673 = (int) bytes_to_do != 0 ? bytes_to_do : MMO_SEC_CONTENTS_CHUNK_SIZE;
2677 loc = mmo_get_loc (sec, sec->vma + offset, chunk_size);
2678 while (loc == NULL && (chunk_size /= 2) != 0);
2680 if (chunk_size == 0)
2683 memcpy (loc, location, chunk_size);
2685 location = (bfd_byte *) location + chunk_size;
2686 bytes_to_do -= chunk_size;
2687 offset += chunk_size;
2692 /* Add a symbol to a trie-tree. */
2695 mmo_internal_add_3_sym (bfd *abfd, struct mmo_symbol_trie *rootp,
2696 const struct mmo_symbol *symp)
2698 const char *name = symp->name;
2699 struct mmo_symbol_trie *trie = rootp;
2700 struct mmo_symbol_trie **triep = NULL;
2702 while (*name && trie != NULL)
2704 if (*name < trie->symchar)
2706 triep = &trie->left;
2709 else if (*name > trie->symchar)
2711 triep = &trie->right;
2714 else if (*name == trie->symchar)
2716 triep = &trie->middle;
2719 /* Make sure "trie" points to where we should fill in the
2720 current symbol whenever we've iterated through "name". We
2721 would lose the right position if we encounter "foobar" then
2724 trie = trie->middle;
2730 /* Create middle branches for the rest of the characters. */
2731 trie = bfd_zalloc (abfd, sizeof (struct mmo_symbol_trie));
2733 trie->symchar = *name++;
2734 triep = &trie->middle;
2737 /* We discover a duplicate symbol rather late in the process, but still;
2738 we discover it and bail out. */
2739 if (trie->sym.name != NULL)
2742 /* xgettext:c-format */
2743 (_("%B: invalid symbol table: duplicate symbol `%s'\n"),
2744 abfd, trie->sym.name);
2745 bfd_set_error (bfd_error_bad_value);
2749 memcpy (&trie->sym, symp, sizeof *symp);
2753 /* Find out the length of the serialized version of a trie in bytes. */
2756 mmo_internal_3_length (bfd *abfd, struct mmo_symbol_trie *trie)
2758 /* First, one for the control byte. */
2759 unsigned int length = 1;
2764 /* Add in the recursion to the left. */
2765 length += mmo_internal_3_length (abfd, trie->left);
2767 /* Add in the middle trie and the character. */
2768 length += 1 + mmo_internal_3_length (abfd, trie->middle);
2770 /* Add in the recursion to the right. */
2771 length += mmo_internal_3_length (abfd, trie->right);
2773 /* Add in bytes for the symbol (if this is an endnode). */
2774 if (trie->sym.name != NULL)
2776 unsigned int serno = trie->sym.serno;
2778 /* First what it takes to encode the value. */
2779 if (trie->sym.sym_type == mmo_reg_sym)
2781 else if (trie->sym.sym_type == mmo_undef_sym)
2785 bfd_vma value = trie->sym.value;
2787 /* Coded in one to eight following bytes. */
2788 if (trie->sym.sym_type == mmo_data_sym)
2789 value -= (bfd_vma) 0x20 << 56;
2799 /* Find out what it takes to encode the serial number. */
2811 /* Helper function for outputting the serial number of a symbol, output as
2812 a variant of leb128 (see dwarf2 documentation) which could be called
2813 beb128. Using a helper function and recursion simplifies debugging. */
2816 mmo_beb128_out (bfd *abfd, int serno, int marker)
2819 mmo_beb128_out (abfd, serno >> 7, 0);
2820 mmo_write_byte (abfd, marker | (serno & 0x7f));
2823 /* Serialize a trie. */
2826 mmo_internal_3_dump (bfd *abfd, struct mmo_symbol_trie *trie)
2828 bfd_byte control = 0;
2834 control |= MMO3_LEFT;
2837 control |= MMO3_MIDDLE;
2840 control |= MMO3_RIGHT;
2842 if (trie->sym.name != NULL)
2844 /* Encode the symbol type and length of value bytes. */
2845 if (trie->sym.sym_type == mmo_reg_sym)
2846 control |= MMO3_REGQUAL_BITS;
2847 else if (trie->sym.sym_type == mmo_undef_sym)
2848 control |= MMO3_UNDEF;
2851 bfd_vma value = trie->sym.value;
2853 /* Coded in 1..8 following bytes. */
2854 if (trie->sym.sym_type == mmo_data_sym)
2856 control |= MMO3_DATA;
2857 value -= (bfd_vma) 0x20 << 56;
2869 /* The control byte is output before recursing. */
2870 mmo_write_byte (abfd, control);
2872 mmo_internal_3_dump (abfd, trie->left);
2874 if (control & MMO3_SYMBITS)
2876 mmo_write_byte (abfd, trie->symchar);
2878 if (trie->sym.name != NULL)
2880 if (trie->sym.sym_type == mmo_reg_sym)
2881 mmo_write_byte (abfd, trie->sym.value);
2882 else if (trie->sym.sym_type == mmo_undef_sym)
2884 mmo_write_byte (abfd, 0);
2885 mmo_write_byte (abfd, 0);
2889 bfd_vma value = trie->sym.value;
2891 bfd_byte byte_n = control & 15;
2893 /* Coded in 1..8 following bytes. Note that the value is
2894 shifted out big-endian. */
2895 if (trie->sym.sym_type == mmo_data_sym)
2897 value -= (bfd_vma) 0x20 << 56;
2903 mmo_write_byte (abfd, (value >> ((byte_n - 1) * 8)) & 0xff);
2906 while (byte_n != 0);
2909 mmo_beb128_out (abfd, trie->sym.serno, 128);
2911 mmo_internal_3_dump (abfd, trie->middle);
2913 mmo_internal_3_dump (abfd, trie->right);
2916 /* Write symbols in mmo format. Also write the lop_end terminator. */
2919 mmo_write_symbols_and_terminator (bfd *abfd)
2921 int count = bfd_get_symcount (abfd);
2923 asymbol **orig_table = bfd_get_outsymbols (abfd);
2925 struct mmo_symbol_trie root;
2930 /* Create a symbol for "Main". */
2931 asymbol *fakemain = bfd_make_empty_symbol (abfd);
2933 fakemain->flags = BSF_GLOBAL;
2934 fakemain->value = bfd_get_start_address (abfd);
2935 fakemain->name = MMIX_START_SYMBOL_NAME;
2936 fakemain->section = bfd_abs_section_ptr;
2938 memset (&root, 0, sizeof (root));
2940 /* Make all symbols take a left turn. */
2941 root.symchar = 0xff;
2943 /* There must always be a ":Main", so we'll add one if there are no
2944 symbols. Make sure we have room for it. */
2945 table = bfd_alloc (abfd, (count + 1) * sizeof (asymbol *));
2949 memcpy (table, orig_table, count * sizeof (asymbol *));
2951 /* Move :Main (if there is one) to the first position. This is
2952 necessary to get the same layout of the trie-tree when linking as
2953 when objcopying the result as in the objcopy.exp test "simple objcopy
2954 of executable". It also automatically takes care of assigning serial
2955 number 1 to :Main (as is mandatory). */
2956 for (i = 0; i < count; i++)
2957 if (table[i] != NULL
2958 && strcmp (table[i]->name, MMIX_START_SYMBOL_NAME) == 0
2959 && (table[i]->flags & (BSF_DEBUGGING|BSF_GLOBAL)) == BSF_GLOBAL)
2961 asymbol *mainsym = table[i];
2964 + mainsym->section->output_section->vma
2965 + mainsym->section->output_offset);
2966 memcpy (table + 1, orig_table, i * sizeof (asymbol *));
2969 /* Check that the value assigned to :Main is the same as the entry
2970 address. The default linker script asserts this. This is as
2971 good a place as any to check this consistency. */
2972 if (mainvalue != bfd_get_start_address (abfd)
2973 && !mmo_ignore_symbol_consistency (abfd))
2975 /* Arbitrary buffer to hold the printable representation of a
2978 char vmas_start[40];
2979 bfd_vma vma_start = bfd_get_start_address (abfd);
2981 sprintf_vma (vmas_main, mainvalue);
2982 sprintf_vma (vmas_start, vma_start);
2985 /* xgettext:c-format */
2986 (_("%B: Bad symbol definition: `Main' set to %s rather"
2987 " than the start address %s\n"),
2988 abfd, vmas_main, vmas_start);
2989 bfd_set_error (bfd_error_bad_value);
2994 if (i == count && count != 0)
2996 /* When there are symbols, there must be a :Main. There was no
2997 :Main, so we need to add it manually. */
2998 memcpy (table + 1, orig_table, count * sizeof (asymbol *));
2999 table[0] = fakemain;
3003 /* Don't bother inspecting symbols in plugin dummy objects; their
3004 symbols aren't fully inspectable. */
3005 if ((abfd->flags & BFD_PLUGIN) == 0)
3007 for (i = 0, serno = 1; i < count && table[i] != NULL; i++)
3009 asymbol *s = table[i];
3011 /* It's not enough to consult bfd_is_local_label, since it does not
3012 mean "local" in the sense of linkable-and-observable-after-link.
3013 Let's just check the BSF_GLOBAL flag.
3015 Also, don't export symbols with characters not in the
3017 if ((s->flags & (BSF_DEBUGGING|BSF_GLOBAL)) == BSF_GLOBAL
3019 valid_mmo_symbol_character_set) == strlen (s->name))
3021 struct mmo_symbol sym;
3022 memset (&sym, 0, sizeof (sym));
3024 /* Need to strip const here; strdup:ing would leak and the
3025 existing string must be safe to reuse. */
3026 sym.name = (char *) s->name;
3029 + s->section->output_section->vma
3030 + s->section->output_offset;
3032 if (bfd_is_und_section (s->section))
3033 sym.sym_type = mmo_undef_sym;
3034 else if (strcmp (s->section->name, MMO_DATA_SECTION_NAME) == 0
3035 /* The encoding of data symbols require that the "rest"
3036 of the value fits in 6 bytes, so the upper two bytes
3037 must be 0x2000. All other symbols get to be the
3039 && (sym.value >> 48) == 0x2000)
3040 sym.sym_type = mmo_data_sym;
3041 else if (strcmp (s->section->name, MMIX_REG_SECTION_NAME) == 0)
3042 sym.sym_type = mmo_reg_sym;
3043 else if (strcmp (s->section->name,
3044 MMIX_REG_CONTENTS_SECTION_NAME) == 0)
3046 sym.sym_type = mmo_reg_sym;
3050 sym.sym_type = mmo_abs_sym;
3052 /* FIXME: We assume the order of the received symbols is an
3053 ordered mapping of the serial numbers. This is not
3054 necessarily true if we e.g. objcopy a mmo file to another and
3055 there are gaps in the numbering. Not sure if this can
3056 happen. Not sure what to do. */
3057 sym.serno = serno++;
3059 if (! mmo_internal_add_3_sym (abfd, &root, &sym))
3065 /* Change the root node to be a ":"-prefix. */
3067 root.middle = root.left;
3071 /* We have to find out if we can fit the whole symbol table in the mmo
3072 symtab. It would be bad to assume we can always fit it in 262144
3073 bytes. If we can't, just leave the Main symbol. */
3074 trie_len = (mmo_internal_3_length (abfd, &root) + 3)/4;
3076 if (trie_len > 0xffff)
3078 /* Test this code by using a lower limit in the test above and check
3079 that the single "Main" symbol is emitted and handled properly.
3080 There's no specific test-case. */
3081 struct mmo_symbol sym;
3084 /* xgettext:c-format */
3085 (_("%B: warning: symbol table too large for mmo, larger than 65535"
3086 " 32-bit words: %d. Only `Main' will be emitted.\n"),
3089 memset (&sym, 0, sizeof (sym));
3090 sym.sym_type = mmo_abs_sym;
3091 sym.name = MMIX_START_SYMBOL_NAME;
3093 sym.value = bfd_get_start_address (abfd);
3095 /* Then patch up a symbol table to be just the ":Main" symbol. */
3096 memset (&root, 0, sizeof (root));
3097 root.left = root.middle;
3098 root.symchar = 0xff;
3102 if (! mmo_internal_add_3_sym (abfd, &root, &sym))
3106 root.middle = root.left;
3110 trie_len = (mmo_internal_3_length (abfd, &root) + 3)/4;
3113 /* Reset the written-bytes counter. */
3114 abfd->tdata.mmo_data->byte_no = 0;
3116 /* Put out the lop_stab mark. */
3117 bfd_put_32 (abfd, (LOP << 24) | (LOP_STAB << 16), buf);
3118 if (bfd_bwrite (buf, 4, abfd) != 4)
3121 /* Dump out symbols. */
3122 mmo_internal_3_dump (abfd, &root);
3124 if (trie_len != (abfd->tdata.mmo_data->byte_no + 3)/4)
3126 /* I haven't seen this trig. It seems no use claiming this case
3127 isn't debugged and abort if we get here. Instead emit a
3128 diagnostic and fail "normally". */
3130 /* xgettext:c-format */
3131 (_("%B: internal error, symbol table changed size from %d to %d"
3134 (abfd->tdata.mmo_data->byte_no + 3)/4);
3135 bfd_set_error (bfd_error_bad_value);
3139 /* Dump out remaining bytes in the buffer and handle I/O errors by
3140 propagating errors. */
3141 if ((abfd->tdata.mmo_data->byte_no % 4) != 0
3142 || abfd->tdata.mmo_data->have_error)
3144 memset (abfd->tdata.mmo_data->buf + (abfd->tdata.mmo_data->byte_no % 4),
3145 0, 4 - (abfd->tdata.mmo_data->byte_no % 4));
3147 if (abfd->tdata.mmo_data->have_error
3148 || bfd_bwrite (abfd->tdata.mmo_data->buf, 4, abfd) != 4)
3152 bfd_put_32 (abfd, (LOP << 24) | (LOP_END << 16) | trie_len, buf);
3153 return bfd_bwrite (buf, 4, abfd) == 4;
3156 /* Write section unless it is the register contents section. For that, we
3157 instead store the section in the supplied pointer. This function is
3158 used through bfd_map_over_sections. */
3161 mmo_write_section_unless_reg_contents (bfd *abfd, asection *sec, void *p)
3163 struct mmo_write_sec_info *infop = (struct mmo_write_sec_info *) p;
3165 if (! infop->retval)
3168 if (strcmp (sec->name, MMIX_REG_CONTENTS_SECTION_NAME) == 0)
3170 infop->reg_section = sec;
3174 /* Exclude the convenience register section. */
3175 if (strcmp (sec->name, MMIX_REG_SECTION_NAME) == 0)
3177 if (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)
3179 /* Make sure it hasn't got contents. It seems impossible to
3180 make it carry contents, so we don't have a test-case for
3183 /* xgettext:c-format */
3184 (_("%B: internal error, internal register section %A had"
3187 bfd_set_error (bfd_error_bad_value);
3188 infop->retval = FALSE;
3195 infop->retval = mmo_internal_write_section (abfd, sec);
3198 /* Do the actual output of a file. Assumes mmo_set_section_contents is
3202 mmo_write_object_contents (bfd *abfd)
3204 struct mmo_write_sec_info wsecinfo;
3206 /* First, there are a few words of preamble. */
3207 if (! mmo_internal_write_header (abfd))
3210 wsecinfo.reg_section = NULL;
3211 wsecinfo.retval = TRUE;
3213 bfd_map_over_sections (abfd, mmo_write_section_unless_reg_contents,
3216 if (! wsecinfo.retval)
3219 if (wsecinfo.reg_section != NULL)
3221 asection *sec = wsecinfo.reg_section;
3222 unsigned int z = (unsigned int) (sec->vma / 8);
3224 /* Registers 0..31 must not be global. Do sanity check on the "vma"
3225 of the register contents section and check that it corresponds to
3226 the length of the section. */
3227 if (z < 32 || z >= 255 || (sec->vma & 7) != 0
3228 || sec->vma != 256 * 8 - sec->size - 8)
3230 bfd_set_error (bfd_error_bad_value);
3233 /* There must always be at least one such register. */
3235 (_("%B: no initialized registers; section length 0\n"),
3237 else if (sec->vma > (256 - 32) * 8)
3238 /* Provide better error message for the case of too many
3239 global registers. */
3241 /* xgettext:c-format */
3242 (_("%B: too many initialized registers; section length %Ld"),
3246 /* xgettext:c-format */
3247 (_("%B: invalid start address for initialized registers of"
3248 " length %Ld: %#Lx"),
3249 abfd, sec->size, sec->vma);
3254 if (! mmo_internal_write_post (abfd, z, sec))
3258 if (! mmo_internal_write_post (abfd, 255, NULL))
3261 return mmo_write_symbols_and_terminator (abfd);
3264 /* If there's anything in particular in a mmo bfd that we want to free,
3265 make this a real function. Only do this if you see major memory
3266 thrashing; zealous free:ing will cause unwanted behavior, especially if
3267 you "free" memory allocated with "bfd_alloc", or even "bfd_release" a
3268 block allocated with "bfd_alloc"; they're really allocated from an
3269 obstack, and we don't know what was allocated there since this
3270 particular allocation. */
3272 #define mmo_close_and_cleanup _bfd_generic_close_and_cleanup
3273 #define mmo_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
3275 /* Perhaps we need to adjust this one; mmo labels (originally) without a
3276 leading ':' might more appropriately be called local. */
3277 #define mmo_bfd_is_local_label_name bfd_generic_is_local_label_name
3278 #define mmo_bfd_is_target_special_symbol \
3279 ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
3281 #define mmo_get_symbol_version_string \
3282 _bfd_nosymbols_get_symbol_version_string
3284 /* Is this one really used or defined by anyone? */
3285 #define mmo_get_lineno _bfd_nosymbols_get_lineno
3287 /* FIXME: We can do better on this one, if we have a dwarf2 .debug_line
3288 section or if MMO line numbers are implemented. */
3289 #define mmo_find_nearest_line _bfd_nosymbols_find_nearest_line
3290 #define mmo_find_line _bfd_nosymbols_find_line
3291 #define mmo_find_inliner_info _bfd_nosymbols_find_inliner_info
3292 #define mmo_make_empty_symbol _bfd_generic_make_empty_symbol
3293 #define mmo_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
3294 #define mmo_read_minisymbols _bfd_generic_read_minisymbols
3295 #define mmo_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
3297 #define mmo_get_section_contents_in_window \
3298 _bfd_generic_get_section_contents_in_window
3299 #define mmo_bfd_get_relocated_section_contents \
3300 bfd_generic_get_relocated_section_contents
3301 #define mmo_bfd_gc_sections bfd_generic_gc_sections
3302 #define mmo_bfd_lookup_section_flags bfd_generic_lookup_section_flags
3303 #define mmo_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
3304 #define mmo_bfd_link_add_symbols _bfd_generic_link_add_symbols
3305 #define mmo_bfd_link_just_syms _bfd_generic_link_just_syms
3306 #define mmo_bfd_copy_link_hash_symbol_type \
3307 _bfd_generic_copy_link_hash_symbol_type
3308 #define mmo_bfd_final_link _bfd_generic_final_link
3309 #define mmo_bfd_link_split_section _bfd_generic_link_split_section
3310 #define mmo_bfd_link_check_relocs _bfd_generic_link_check_relocs
3312 /* Strictly speaking, only MMIX uses this restricted format, but let's not
3313 stop anybody from shooting themselves in the foot. */
3314 #define mmo_set_arch_mach bfd_default_set_arch_mach
3315 #define mmo_bfd_relax_section bfd_generic_relax_section
3316 #define mmo_bfd_merge_sections bfd_generic_merge_sections
3317 #define mmo_bfd_is_group_section bfd_generic_is_group_section
3318 #define mmo_bfd_discard_group bfd_generic_discard_group
3319 #define mmo_section_already_linked \
3320 _bfd_generic_section_already_linked
3321 #define mmo_bfd_define_common_symbol bfd_generic_define_common_symbol
3322 #define mmo_bfd_define_start_stop bfd_generic_define_start_stop
3324 /* We want to copy time of creation, otherwise we'd use
3325 BFD_JUMP_TABLE_COPY (_bfd_generic). */
3326 #define mmo_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
3327 #define mmo_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
3328 #define mmo_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
3329 #define mmo_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
3330 #define mmo_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
3331 #define mmo_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
3333 const bfd_target mmix_mmo_vec =
3336 bfd_target_mmo_flavour,
3337 BFD_ENDIAN_BIG, /* target byte order */
3338 BFD_ENDIAN_BIG, /* target headers byte order */
3340 /* FIXME: Might need adjustments. */
3341 (HAS_RELOC | EXEC_P | /* object flags */
3342 HAS_LINENO | HAS_DEBUG |
3343 HAS_SYMS | HAS_LOCALS | WP_TEXT),
3345 /* FIXME: Might need adjustments. */
3346 (SEC_CODE | SEC_DATA | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
3347 | SEC_READONLY | SEC_EXCLUDE | SEC_DEBUGGING | SEC_IN_MEMORY),
3349 0, /* leading underscore */
3350 ' ', /* ar_pad_char */
3351 16, /* ar_max_namelen */
3352 0, /* match priority. */
3353 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
3354 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
3355 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
3356 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
3357 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
3358 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
3362 mmo_object_p, /* bfd_check_format */
3372 { /* bfd_write_contents */
3374 mmo_write_object_contents,
3379 BFD_JUMP_TABLE_GENERIC (mmo),
3380 BFD_JUMP_TABLE_COPY (mmo),
3381 BFD_JUMP_TABLE_CORE (_bfd_nocore),
3382 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
3383 BFD_JUMP_TABLE_SYMBOLS (mmo),
3384 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
3385 BFD_JUMP_TABLE_WRITE (mmo),
3386 BFD_JUMP_TABLE_LINK (mmo),
3387 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),