1 /* BFD back-end for mmo objects (MMIX-specific object-format).
2 Copyright (C) 2001-2019 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 *,
435 valid_mmo_symbol_character_set[] =
437 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
438 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
439 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
440 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
441 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
442 ':', '_', 126, 127, 128, 129,
443 130, 131, 132, 133, 134, 135, 136, 137, 138, 139,
444 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
445 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
446 160, 161, 162, 163, 164, 165, 166, 167, 168, 169,
447 170, 171, 172, 173, 174, 175, 176, 177, 178, 179,
448 180, 181, 182, 183, 184, 185, 186, 187, 188, 189,
449 190, 191, 192, 193, 194, 195, 196, 197, 198, 199,
450 200, 201, 202, 203, 204, 205, 206, 207, 208, 209,
451 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
452 220, 221, 222, 223, 224, 225, 226, 227, 228, 229,
453 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
454 240, 241, 242, 243, 244, 245, 246, 247, 248, 249,
455 250, 251, 252, 253, 254, 255,
460 /* Get section SECNAME or create one if it doesn't exist. When creating
461 one, new memory for the name is allocated. */
464 mmo_make_section (bfd *abfd, const char *secname)
466 asection *sec = bfd_get_section_by_name (abfd, secname);
470 char *newsecname = strdup (secname);
472 if (newsecname == NULL)
475 /* xgettext:c-format */
476 (_("%pB: no core to allocate section name %s"),
478 bfd_set_error (bfd_error_system_call);
481 sec = bfd_make_section (abfd, newsecname);
487 /* Nothing to do, but keep as a placeholder if we need it.
488 Note that state that might differ between bfd:s must not be initialized
489 here, nor must it be static. Add it to tdata information instead. */
494 static bfd_boolean inited = FALSE;
501 /* Check whether an existing file is an mmo file. */
503 static const bfd_target *
504 mmo_object_p (bfd *abfd)
511 if (bfd_stat (abfd, &statbuf) < 0
512 || bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
513 || bfd_bread (b, 4, abfd) != 4)
516 /* All mmo files are a multiple of four bytes long.
517 Only recognize version one. */
518 if ((statbuf.st_size % 4) != 0
519 || b[0] != LOP || b[1] != LOP_PRE || b[2] != 1)
522 /* Get the last 32-bit word. */
523 if (bfd_seek (abfd, (file_ptr) statbuf.st_size - 4, SEEK_SET) != 0
524 || bfd_bread (b, 4, abfd) != 4)
527 /* Check if the file ends in a lop_end lopcode. */
528 if (b[0] != LOP || b[1] != LOP_END || ! mmo_mkobject (abfd))
531 /* Compute an upper bound on the max symbol length. Not really
532 important as all of the symbol information can only be 256k. */
533 abfd->tdata.mmo_data->max_symbol_length = (b[2] * 256 + b[3]) * 4;
534 abfd->tdata.mmo_data->lop_stab_symbol
535 = bfd_malloc (abfd->tdata.mmo_data->max_symbol_length + 1);
537 if (abfd->tdata.mmo_data->lop_stab_symbol == NULL)
540 /* xgettext:c-format */
541 (_("%pB: no core to allocate a symbol %d bytes long"),
542 abfd, abfd->tdata.mmo_data->max_symbol_length);
546 /* Read in everything. */
547 if (! mmo_scan (abfd))
548 goto bad_format_free;
550 if (abfd->symcount > 0)
551 abfd->flags |= HAS_SYMS;
553 /* You'll have to tweak this if you want to use this format for other
554 arches (not recommended due to its small-size limitations). Look at
555 the ELF format for how to make it target-generic. */
556 if (! bfd_default_set_arch_mach (abfd, bfd_arch_mmix, 0))
557 goto bad_format_free;
562 free (abfd->tdata.mmo_data->lop_stab_symbol);
564 bfd_set_error (bfd_error_wrong_format);
569 /* Set up the mmo tdata information. */
572 mmo_mkobject (bfd *abfd)
576 if (abfd->tdata.mmo_data == NULL)
580 /* All fields are zero-initialized, so we don't have to explicitly
582 tdata_type *tdata = (tdata_type *) bfd_zmalloc (sizeof (tdata_type));
586 created = time (NULL);
587 bfd_put_32 (abfd, created, tdata->created);
589 abfd->tdata.mmo_data = tdata;
596 mmo_section_has_contents (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *p ATTRIBUTE_UNUSED)
598 /* The point is to match what --extract-symbols does (well, negated). */
599 return bfd_get_section_size (sec) != 0;
602 /* Find out whether we should omit symbol consistency checks for this
603 bfd and cache the value.
605 This function must only be called when all section contents is
606 known. However, calculating symbol consistency at the time the
607 private BFD data is initialized is too late for some uses. */
610 mmo_ignore_symbol_consistency (bfd *abfd)
612 if (!abfd->tdata.mmo_data->symbol_consistency_override_calculated)
614 abfd->tdata.mmo_data->ignore_symbol_consistency =
615 bfd_sections_find_if (abfd, mmo_section_has_contents, NULL) == NULL;
617 abfd->tdata.mmo_data->symbol_consistency_override_calculated = TRUE;
620 return abfd->tdata.mmo_data->ignore_symbol_consistency;
624 mmo_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
626 if (bfd_get_flavour (ibfd) != bfd_target_mmo_flavour
627 || bfd_get_flavour (obfd) != bfd_target_mmo_flavour)
630 /* Copy the time the copied-from file was created. If people want the
631 time the file was last *modified*, they have that in the normal file
633 memcpy (obfd->tdata.mmo_data->created, ibfd->tdata.mmo_data->created,
634 sizeof (obfd->tdata.mmo_data->created));
638 /* Helper functions for mmo_decide_section, used through
639 bfd_map_over_sections. */
642 mmo_find_sec_w_addr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *p)
644 struct mmo_find_sec_info *infop = (struct mmo_find_sec_info *) p;
645 bfd_vma vma = bfd_get_section_vma (abfd, sec);
647 /* Ignore sections that aren't loaded. */
648 if ((bfd_get_section_flags (abfd, sec) & (SEC_LOAD | SEC_ALLOC))
649 != (SEC_LOAD | SEC_ALLOC))
652 if (infop->addr >= vma && infop->addr < vma + sec->size)
657 mmo_find_sec_w_addr_grow (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *p)
659 struct mmo_find_sec_info *infop = (struct mmo_find_sec_info *) p;
660 bfd_vma vma = bfd_get_section_vma (abfd, sec);
662 /* Ignore sections that aren't loaded. */
663 if ((bfd_get_section_flags (abfd, sec) & (SEC_LOAD | SEC_ALLOC))
664 != (SEC_LOAD | SEC_ALLOC))
667 if (infop->addr >= vma && infop->addr < vma + MAX_ARTIFICIAL_SECTION_SIZE)
671 /* Find a section that corresponds to a VMA. Automatically create .text
672 or .data and set current section to it, depending on what vma. If we
673 can't deduce a section, make one up as ".MMIX.sec.N", where N is an
674 increasing number. */
677 mmo_decide_section (bfd *abfd, bfd_vma vma)
679 asection *sec = NULL;
680 char sec_name[sizeof (".MMIX.sec.") + 20];
681 struct mmo_find_sec_info info;
686 /* First see if there's a section that would match exactly. */
687 bfd_map_over_sections (abfd, mmo_find_sec_w_addr, &info);
689 if (info.sec != NULL)
692 /* If there's no such section, try and expand one of the existing ones,
693 up to a limit. Make sure we have .text and .data before we try that;
694 create them corresponding to expected addresses and set flags to make
695 them match the "loaded and with contents" expectation. */
696 if ((vma >> 56) == 0)
698 sec = bfd_make_section_old_way (abfd, MMO_TEXT_SECTION_NAME);
703 if (! sec->user_set_vma && ! bfd_set_section_vma (abfd, sec, vma))
706 if (! bfd_set_section_flags (abfd, sec,
707 bfd_get_section_flags (abfd, sec)
708 | SEC_CODE | SEC_LOAD | SEC_ALLOC))
711 else if ((vma >> 56) == 0x20)
713 sec = bfd_make_section_old_way (abfd, MMO_DATA_SECTION_NAME);
718 if (! sec->user_set_vma && ! bfd_set_section_vma (abfd, sec, vma))
721 if (! bfd_set_section_flags (abfd, sec,
722 bfd_get_section_flags (abfd, sec)
723 | SEC_LOAD | SEC_ALLOC))
727 bfd_map_over_sections (abfd, mmo_find_sec_w_addr_grow, &info);
729 if (info.sec != NULL)
732 /* If there's still no suitable section, make a new one. */
733 sprintf (sec_name, ".MMIX.sec.%d", abfd->tdata.mmo_data->sec_no++);
734 sec = mmo_make_section (abfd, sec_name);
736 if (! sec->user_set_vma && ! bfd_set_section_vma (abfd, sec, vma))
739 if (! bfd_set_section_flags (abfd, sec,
740 bfd_get_section_flags (abfd, sec)
741 | SEC_LOAD | SEC_ALLOC))
746 /* Xor in a 64-bit value VALUE at VMA. */
749 mmo_xore_64 (asection *sec, bfd_vma vma, bfd_vma value)
751 bfd_byte *loc = mmo_get_loc (sec, vma, 8);
752 bfd_vma prev = bfd_get_64 (sec->owner, loc);
755 bfd_put_64 (sec->owner, value, loc);
758 /* Xor in a 32-bit value VALUE at VMA. */
761 mmo_xore_32 (asection *sec, bfd_vma vma, unsigned int value)
763 bfd_byte *loc = mmo_get_loc (sec, vma, 4);
764 unsigned int prev = bfd_get_32 (sec->owner, loc);
767 bfd_put_32 (sec->owner, value, loc);
770 /* Xor in a 16-bit value VALUE at VMA. */
773 mmo_xore_16 (asection *sec, bfd_vma vma, unsigned int value)
775 bfd_byte *loc = mmo_get_loc (sec, vma, 2);
776 unsigned int prev = bfd_get_16 (sec->owner, loc);
779 bfd_put_16 (sec->owner, value, loc);
782 /* Write a 32-bit word to output file, no lop_quote generated. */
785 mmo_write_tetra_raw (bfd *abfd, unsigned int value)
789 bfd_put_32 (abfd, value, buf);
791 if (bfd_bwrite (buf, 4, abfd) != 4)
792 abfd->tdata.mmo_data->have_error = TRUE;
795 /* Write a 32-bit word to output file; lop_quote if necessary. */
798 mmo_write_tetra (bfd *abfd, unsigned int value)
800 if (((value >> 24) & 0xff) == LOP)
801 mmo_write_tetra_raw (abfd, LOP_QUOTE_NEXT);
803 mmo_write_tetra_raw (abfd, value);
806 /* Write a 64-bit word to output file, perhaps with lop_quoting. */
809 mmo_write_octa (bfd *abfd, bfd_vma value)
811 mmo_write_tetra (abfd, (unsigned int) (value >> 32));
812 mmo_write_tetra (abfd, (unsigned int) value);
815 /* Write a 64-bit word to output file, without lop_quoting. */
818 mmo_write_octa_raw (bfd *abfd, bfd_vma value)
820 mmo_write_tetra_raw (abfd, (unsigned int) (value >> 32));
821 mmo_write_tetra_raw (abfd, (unsigned int) value);
824 /* Write quoted contents. Intended to be called multiple times in
825 sequence, followed by a call to mmo_flush_chunk. */
827 static INLINE bfd_boolean
828 mmo_write_chunk (bfd *abfd, const bfd_byte *loc, unsigned int len)
830 bfd_boolean retval = TRUE;
831 struct mmo_data_struct *mmop = abfd->tdata.mmo_data;
833 /* Fill up a tetra from bytes remaining from a previous chunk. */
834 if (mmop->byte_no != 0)
836 while (mmop->byte_no < 4 && len != 0)
838 mmop->buf[mmop->byte_no++] = *loc++;
842 if (mmop->byte_no == 4)
844 mmo_write_tetra (abfd, bfd_get_32 (abfd, mmop->buf));
852 mmo_write_tetra_raw (abfd, LOP_QUOTE_NEXT);
855 && ! mmop->have_error
856 && 4 == bfd_bwrite (loc, 4, abfd));
864 /* We must have flushed a previous remainder if we get one from
866 BFD_ASSERT (mmop->byte_no == 0);
867 memcpy (mmop->buf, loc, len);
872 mmop->have_error = TRUE;
876 /* Flush remaining bytes, from a previous mmo_write_chunk, zero-padded to
879 static INLINE bfd_boolean
880 mmo_flush_chunk (bfd *abfd)
882 if (abfd->tdata.mmo_data->byte_no != 0)
884 memset (abfd->tdata.mmo_data->buf + abfd->tdata.mmo_data->byte_no,
885 0, 4 - abfd->tdata.mmo_data->byte_no);
886 mmo_write_tetra (abfd,
887 bfd_get_32 (abfd, abfd->tdata.mmo_data->buf));
888 abfd->tdata.mmo_data->byte_no = 0;
891 return ! abfd->tdata.mmo_data->have_error;
894 /* Same, but from a list. */
896 static INLINE bfd_boolean
897 mmo_write_chunk_list (bfd *abfd, mmo_data_list_type *datap)
899 for (; datap != NULL; datap = datap->next)
900 if (! mmo_write_chunk (abfd, datap->data, datap->size))
903 return mmo_flush_chunk (abfd);
906 /* Write a lop_loc and some contents. A caller needs to call
907 mmo_flush_chunk after calling this function. The location is only
908 output if different than *LAST_VMAP, which is updated after this call. */
911 mmo_write_loc_chunk (bfd *abfd, bfd_vma vma, const bfd_byte *loc,
912 unsigned int len, bfd_vma *last_vmap)
914 /* Find an initial and trailing section of zero (aligned) tetras; we don't
915 need to write out zeros. FIXME: When we do this, we should emit
916 section size and address specifiers, else objcopy can't always perform
917 an identity translation. Only do this if we *don't* have left-over
918 data from a previous write (and will not add any) or else the vma of
919 this chunk is *not* the next address, because then data isn't
920 tetrabyte-aligned and we're concatenating to that left-over data. */
923 && (abfd->tdata.mmo_data->byte_no == 0 || vma != *last_vmap))
925 while (len > 4 && bfd_get_32 (abfd, loc) == 0)
933 while (len > 4 && bfd_get_32 (abfd, loc + len - 4) == 0)
937 /* Only write out the location if it's different than the one the caller
938 (supposedly) previously handled, accounting for omitted leading zeros. */
939 if (vma != *last_vmap)
941 /* We might be in the middle of a sequence. */
942 mmo_flush_chunk (abfd);
944 /* This should not happen during normal usage, but can presumably
945 happen with an erroneous linker-script, so handle gracefully.
946 Avoid Knuth-specific terms in the message, such as "tetrabyte".
947 Note that this function will get non-4-multiple lengths and
948 unaligned vmas but those come in tuples (mostly pairs) and are
949 continuous (i.e. the if-condition above false) and they are
950 group-wise aligned. */
954 /* xgettext:c-format */
955 (_("%pB: attempt to emit contents at non-multiple-of-4"
956 " address %#" PRIx64 ""),
957 abfd, (uint64_t) vma);
958 bfd_set_error (bfd_error_bad_value);
962 /* We always write the location as 64 bits; no use saving bytes
964 mmo_write_tetra_raw (abfd, (LOP << 24) | (LOP_LOC << 16) | 2);
965 mmo_write_octa_raw (abfd, vma);
968 /* Update to reflect end of this chunk, with trailing zeros omitted. */
969 *last_vmap = vma + len;
971 return (! abfd->tdata.mmo_data->have_error
972 && mmo_write_chunk (abfd, loc, len));
975 /* Same, but from a list. */
977 static INLINE bfd_boolean
978 mmo_write_loc_chunk_list (bfd *abfd, mmo_data_list_type *datap)
980 /* Get an address different than the address of the first chunk. */
981 bfd_vma last_vma = datap ? datap->where - 1 : 0;
983 for (; datap != NULL; datap = datap->next)
984 if (! mmo_write_loc_chunk (abfd, datap->where, datap->data, datap->size,
988 return mmo_flush_chunk (abfd);
991 /* Make a .MMIX.spec_data.N section. */
994 mmo_get_generic_spec_data_section (bfd *abfd, int spec_data_number)
997 char secname[sizeof (MMIX_OTHER_SPEC_SECTION_PREFIX) + 20]
998 = MMIX_OTHER_SPEC_SECTION_PREFIX;
1000 sprintf (secname + strlen (MMIX_OTHER_SPEC_SECTION_PREFIX),
1001 "%d", spec_data_number);
1003 sec = mmo_make_section (abfd, secname);
1008 /* Make a special section for SPEC_DATA_NUMBER. If it is the one we use
1009 ourselves, parse some of its data to get at the section name. */
1012 mmo_get_spec_section (bfd *abfd, int spec_data_number)
1017 unsigned int secname_length;
1019 bfd_vma section_length;
1020 bfd_vma section_vma;
1021 mmo_data_list_type *loc;
1025 /* If this isn't the "special" special data, then make a placeholder
1027 if (spec_data_number != SPEC_DATA_SECTION)
1028 return mmo_get_generic_spec_data_section (abfd, spec_data_number);
1030 /* Seek back to this position if there was a format error. */
1031 orig_pos = bfd_tell (abfd);
1033 /* Read the length (in 32-bit words). */
1034 if (bfd_bread (buf, 4, abfd) != 4)
1039 if (buf[1] != LOP_QUOTE)
1042 if (bfd_bread (buf, 4, abfd) != 4)
1046 /* We don't care to keep the name length accurate. It's
1048 secname_length = bfd_get_32 (abfd, buf) * 4;
1050 /* Check section name length for sanity. */
1051 if (secname_length > MAX_SECTION_NAME_SIZE)
1054 /* This should be free'd regardless if a section is created. */
1055 secname = bfd_malloc (secname_length + 1);
1056 secname[secname_length] = 0;
1058 for (i = 0; i < secname_length / 4; i++)
1060 if (bfd_bread (secname + i * 4, 4, abfd) != 4)
1061 goto format_error_free;
1063 if (secname[i * 4] == (char) LOP)
1065 /* A bit of overkill, but we handle char 0x98 in a section name,
1066 and recognize misparsing. */
1067 if (secname[i * 4 + 1] != LOP_QUOTE
1068 || bfd_bread (secname + i * 4, 4, abfd) != 4)
1069 /* Whoops. We thought this was a name, and now we found a
1070 non-lop_quote lopcode before we parsed the whole length of
1071 the name. Signal end-of-file in the same manner. */
1072 goto format_error_free;
1076 /* Get the section flags. */
1077 if (bfd_bread (buf, 4, abfd) != 4
1079 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1080 goto format_error_free;
1082 flags = bfd_get_32 (abfd, buf);
1084 /* Get the section length. */
1085 if (bfd_bread (buf, 4, abfd) != 4
1087 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1088 goto format_error_free;
1090 section_length = (bfd_vma) bfd_get_32 (abfd, buf) << 32;
1092 /* That's the first, high-part. Now get the low part. */
1094 if (bfd_bread (buf, 4, abfd) != 4
1096 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1097 goto format_error_free;
1099 section_length |= (bfd_vma) bfd_get_32 (abfd, buf);
1101 /* Check the section length for sanity. */
1102 if (section_length > MAX_ARTIFICIAL_SECTION_SIZE)
1103 goto format_error_free;
1105 /* Get the section VMA. */
1106 if (bfd_bread (buf, 4, abfd) != 4
1108 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1109 goto format_error_free;
1111 section_vma = (bfd_vma) bfd_get_32 (abfd, buf) << 32;
1113 /* That's the first, high-part. Now get the low part. */
1114 if (bfd_bread (buf, 4, abfd) != 4
1116 && (buf[1] != LOP_QUOTE || bfd_bread (buf, 4, abfd) != 4)))
1117 goto format_error_free;
1119 section_vma |= (bfd_vma) bfd_get_32 (abfd, buf);
1121 sec = mmo_make_section (abfd, secname);
1126 /* We allocate a buffer here for the advertised size, with head room for
1127 tetrabyte alignment. */
1128 loc = bfd_zmalloc (section_length + 3
1129 + sizeof (struct mmo_data_list_struct));
1133 /* Use a TETRA-rounded size for the allocated buffer; we set the
1134 "visible" section size below. */
1135 loc->size = (section_length + 3) & ~3;
1137 /* Add in the section flags we found to those bfd entered during this
1138 process and set the contents. */
1139 if (! bfd_set_section_flags (abfd, sec,
1140 bfd_sec_flags_from_mmo_flags (flags)
1141 | bfd_get_section_flags (abfd, sec)
1142 | (section_length != 0 ? SEC_HAS_CONTENTS : 0))
1143 || ! bfd_set_section_size (abfd, sec, sec->size + section_length)
1144 /* Set VMA only for the first occurrence. */
1145 || (! sec->user_set_vma
1146 && ! bfd_set_section_vma (abfd, sec, section_vma)))
1148 /* If we get an error for any of the calls above, signal more than
1149 just a format error for the spec section. */
1154 if (mmo_section_data (sec)->tail != NULL)
1155 mmo_section_data (sec)->tail->next = loc;
1157 mmo_section_data (sec)->head = loc;
1158 mmo_section_data (sec)->tail = loc;
1159 loc->where = section_vma;
1166 if (bfd_seek (abfd, orig_pos, SEEK_SET) != 0)
1169 return mmo_get_generic_spec_data_section (abfd, spec_data_number);
1172 /* Read a byte, but read from file in multiples of 32-bit words. */
1175 mmo_get_byte (bfd *abfd)
1179 if (abfd->tdata.mmo_data->byte_no == 0)
1181 if (! abfd->tdata.mmo_data->have_error
1182 && bfd_bread (abfd->tdata.mmo_data->buf, 4, abfd) != 4)
1184 abfd->tdata.mmo_data->have_error = TRUE;
1186 /* A value somewhat safe against tripping on some inconsistency
1187 when mopping up after this error. */
1192 retval = abfd->tdata.mmo_data->buf[abfd->tdata.mmo_data->byte_no];
1193 abfd->tdata.mmo_data->byte_no = (abfd->tdata.mmo_data->byte_no + 1) % 4;
1198 /* Write a byte, in multiples of 32-bit words. */
1201 mmo_write_byte (bfd *abfd, bfd_byte value)
1203 abfd->tdata.mmo_data->buf[(abfd->tdata.mmo_data->byte_no++ % 4)] = value;
1204 if ((abfd->tdata.mmo_data->byte_no % 4) == 0)
1206 if (! abfd->tdata.mmo_data->have_error
1207 && bfd_bwrite (abfd->tdata.mmo_data->buf, 4, abfd) != 4)
1208 abfd->tdata.mmo_data->have_error = TRUE;
1212 /* Create a symbol. */
1215 mmo_create_symbol (bfd *abfd, const char *symname, bfd_vma addr, enum
1216 mmo_sym_type sym_type, unsigned int serno)
1218 struct mmo_symbol *n;
1220 n = (struct mmo_symbol *) bfd_alloc (abfd, sizeof (struct mmo_symbol));
1224 n->name = bfd_alloc (abfd, strlen (symname) + 1);
1225 if (n->name == NULL)
1228 strcpy (n->name, symname);
1231 n->sym_type = sym_type;
1234 if (abfd->tdata.mmo_data->symbols == NULL)
1235 abfd->tdata.mmo_data->symbols = n;
1237 abfd->tdata.mmo_data->symtail->next = n;
1238 abfd->tdata.mmo_data->symtail = n;
1243 /* Check that :Main equals the last octa of the .MMIX.reg_contents
1244 section, as it's the one place we're sure to pass when reading a mmo
1245 object. For written objects, we do it while setting the symbol
1247 if (strcmp (symname, MMIX_START_SYMBOL_NAME) == 0
1248 && bfd_get_start_address (abfd) != addr
1249 && !mmo_ignore_symbol_consistency (abfd))
1252 (_("%pB: invalid mmo file: initialization value for $255"
1253 " is not `Main'\n"),
1255 bfd_set_error (bfd_error_bad_value);
1262 /* Read in symbols. */
1265 mmo_get_symbols (bfd *abfd)
1269 Symbol-table, mmo section mapping, File layout, mmo
1273 From mmixal.w (or really, the generated mmixal.tex) in the
1274 MMIXware package which also contains the @command{mmix} simulator:
1275 ``Symbols are stored and retrieved by means of a @samp{ternary
1276 search trie}, following ideas of Bentley and Sedgewick. (See
1277 ACM--SIAM Symp.@: on Discrete Algorithms @samp{8} (1997), 360--369;
1278 R.@:Sedgewick, @samp{Algorithms in C} (Reading, Mass.@:
1279 Addison--Wesley, 1998), @samp{15.4}.) Each trie node stores a
1280 character, and there are branches to subtries for the cases where
1281 a given character is less than, equal to, or greater than the
1282 character in the trie. There also is a pointer to a symbol table
1283 entry if a symbol ends at the current node.''
1285 So it's a tree encoded as a stream of bytes. The stream of bytes
1286 acts on a single virtual global symbol, adding and removing
1287 characters and signalling complete symbol points. Here, we read
1288 the stream and create symbols at the completion points.
1290 First, there's a control byte <<m>>. If any of the listed bits
1291 in <<m>> is nonzero, we execute what stands at the right, in
1295 | 0x40 - Traverse left trie.
1296 | (Read a new command byte and recurse.)
1299 | 0x2f - Read the next byte as a character and store it in the
1300 | current character position; increment character position.
1301 | Test the bits of <<m>>:
1304 | 0x80 - The character is 16-bit (so read another byte,
1305 | merge into current character.
1308 | 0xf - We have a complete symbol; parse the type, value
1309 | and serial number and do what should be done
1310 | with a symbol. The type and length information
1311 | is in j = (m & 0xf).
1313 | (MMO3_REGQUAL_BITS)
1314 | j == 0xf: A register variable. The following
1315 | byte tells which register.
1316 | j <= 8: An absolute symbol. Read j bytes as the
1317 | big-endian number the symbol equals.
1318 | A j = 2 with two zero bytes denotes an
1320 | j > 8: As with j <= 8, but add (0x20 << 56)
1321 | to the value in the following j - 8
1324 | Then comes the serial number, as a variant of
1325 | uleb128, but better named ubeb128:
1326 | Read bytes and shift the previous value left 7
1327 | (multiply by 128). Add in the new byte, repeat
1328 | until a byte has bit 7 set. The serial number
1329 | is the computed value minus 128.
1332 | 0x20 - Traverse middle trie. (Read a new command byte
1333 | and recurse.) Decrement character position.
1336 | 0x10 - Traverse right trie. (Read a new command byte and
1339 Let's look again at the <<lop_stab>> for the trivial file
1340 (@pxref{File layout}).
1342 | 0x980b0000 - lop_stab for ":Main" = 0, serial 1.
1349 This forms the trivial trie (note that the path between ``:'' and
1350 ``M'' is redundant):
1361 | 016e "n" is the last character in a full symbol, and
1362 | with a value represented in one byte.
1363 | 00 The value is 0.
1364 | 81 The serial number is 1. */
1366 bfd_byte m = mmo_get_byte (abfd);
1368 /* Check first if we have a bad hair day. */
1369 if (abfd->tdata.mmo_data->have_error)
1373 /* Traverse left trie. */
1374 mmo_get_symbols (abfd);
1376 if (m & MMO3_SYMBITS)
1378 bfd_byte c = mmo_get_byte (abfd);
1379 bfd_byte j = m & MMO3_TYPEBITS;
1381 enum mmo_sym_type sym_type;
1382 unsigned int serno = 0;
1387 bfd_byte c2 = mmo_get_byte (abfd);
1389 /* A two-byte character. We can't grok this, but neither can
1390 mmotype, for other cases than the second byte being zero. */
1394 abfd->tdata.mmo_data->lop_stab_symbol
1395 [abfd->tdata.mmo_data->symbol_position] = 0;
1398 /* xgettext:c-format */
1399 (_("%pB: unsupported wide character sequence"
1400 " 0x%02X 0x%02X after symbol name starting with `%s'\n"),
1401 abfd, c, c2, abfd->tdata.mmo_data->lop_stab_symbol);
1402 bfd_set_error (bfd_error_bad_value);
1403 abfd->tdata.mmo_data->have_error = TRUE;
1410 abfd->tdata.mmo_data->lop_stab_symbol[abfd->tdata.mmo_data->symbol_position++] = c;
1411 abfd->tdata.mmo_data->lop_stab_symbol[abfd->tdata.mmo_data->symbol_position] = 0;
1413 if (j & MMO3_REGQUAL_BITS)
1415 if (j == MMO3_REGQUAL_BITS)
1417 sym_type = mmo_reg_sym;
1418 addr = mmo_get_byte (abfd);
1424 for (i = 0; i < j; i++)
1425 addr = (addr << 8) + mmo_get_byte (abfd);
1427 if (addr == 0 && j == MMO3_UNDEF)
1428 sym_type = mmo_undef_sym;
1430 sym_type = mmo_abs_sym;
1436 for (i = MMO3_DATA; i < j; i++)
1437 addr = (addr << 8) + mmo_get_byte (abfd);
1439 addr += (bfd_vma) 0x20 << 56;
1440 sym_type = mmo_data_sym;
1443 /* Get the serial number. */
1446 k = mmo_get_byte (abfd);
1447 serno = (serno << 7) + k;
1452 /* Got it. Now enter it. Skip a leading ":". */
1453 if (! abfd->tdata.mmo_data->have_error
1454 && ! mmo_create_symbol (abfd,
1455 abfd->tdata.mmo_data->lop_stab_symbol
1457 addr, sym_type, serno))
1458 abfd->tdata.mmo_data->have_error = TRUE;
1461 if (m & MMO3_MIDDLE)
1462 /* Traverse middle trie. */
1463 mmo_get_symbols (abfd);
1465 abfd->tdata.mmo_data->symbol_position--;
1469 /* Traverse right trie. */
1470 mmo_get_symbols (abfd);
1472 return ! abfd->tdata.mmo_data->have_error;
1475 /* Get the location of memory area [VMA..VMA + SIZE - 1], which we think
1476 is in section SEC. Adjust and reallocate zero-initialized contents.
1477 If there's new contents, allocate to the next multiple of
1478 MMO_SEC_CONTENTS_CHUNK_SIZE. */
1480 static INLINE bfd_byte *
1481 mmo_get_loc (asection *sec, bfd_vma vma, int size)
1483 bfd_size_type allocated_size;
1484 struct mmo_section_data_struct *sdatap = mmo_section_data (sec);
1485 struct mmo_data_list_struct *datap = sdatap->head;
1486 struct mmo_data_list_struct *entry;
1488 /* First search the list to see if we have the requested chunk in one
1489 piece, or perhaps if we have a suitable chunk with room to fit. */
1490 for (; datap != NULL; datap = datap->next)
1492 if (datap->where <= vma
1493 && datap->where + datap->size >= vma + size)
1494 return datap->data + vma - datap->where;
1495 else if (datap->where <= vma
1496 && datap->where + datap->allocated_size >= vma + size
1497 /* Only munch on the "allocated size" if it does not
1498 overlap the next chunk. */
1499 && (datap->next == NULL || datap->next->where >= vma + size))
1501 /* There was room allocated, but the size wasn't set to include
1503 datap->size += (vma + size) - (datap->where + datap->size);
1505 /* Update the section size. This happens only if we update the
1506 32-bit-aligned chunk size. Callers that have
1507 non-32-bit-aligned sections should do all allocation and
1508 size-setting by themselves or at least set the section size
1509 after the last allocating call to this function. */
1510 if (vma + size > sec->vma + sec->size)
1511 sec->size += (vma + size) - (sec->vma + sec->size);
1513 return datap->data + vma - datap->where;
1517 /* Not found; allocate a new block. First check in case we get a
1518 request for a size split up over several blocks; we'll have to return
1519 NULL for those cases, requesting the caller to split up the request.
1520 Requests with an address aligned on MMO_SEC_CONTENTS_CHUNK_SIZE bytes and
1521 for no more than MMO_SEC_CONTENTS_CHUNK_SIZE will always get resolved. */
1523 for (datap = sdatap->head; datap != NULL; datap = datap->next)
1524 if ((datap->where <= vma && datap->where + datap->size > vma)
1525 || (datap->where < vma + size
1526 && datap->where + datap->size >= vma + size))
1530 = (size + MMO_SEC_CONTENTS_CHUNK_SIZE - 1) & ~(MMO_SEC_CONTENTS_CHUNK_SIZE - 1);
1531 entry = (mmo_data_list_type *)
1532 bfd_zalloc (sec->owner, sizeof (mmo_data_list_type) + allocated_size);
1537 entry->allocated_size = allocated_size;
1539 datap = sdatap->head;
1541 /* Sort the records by address. Optimize for the common case of adding
1542 a record to the end of the list. */
1543 if (sdatap->tail != NULL && entry->where >= sdatap->tail->where)
1545 sdatap->tail->next = entry;
1547 sdatap->tail = entry;
1551 mmo_data_list_type **look;
1552 for (look = &sdatap->head;
1553 *look != NULL && (*look)->where < entry->where;
1554 look = &(*look)->next)
1556 entry->next = *look;
1558 if (entry->next == NULL)
1560 sdatap->tail = entry;
1562 /* We get here for the first time (at other times too) for this
1563 section. Say we have contents. */
1564 if (! bfd_set_section_flags (sec->owner, sec,
1565 bfd_get_section_flags (sec->owner, sec)
1566 | SEC_HAS_CONTENTS))
1571 /* Update the section size. This happens only when we add contents and
1572 re-size as we go. The section size will then be aligned to 32 bits. */
1573 if (vma + size > sec->vma + sec->size)
1574 sec->size += (vma + size) - (sec->vma + sec->size);
1578 /* Set sizes once we've read in all sections. */
1581 mmo_map_set_sizes (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1582 void *ignored ATTRIBUTE_UNUSED)
1584 sec->lma = sec->vma;
1587 /* Read the mmo file and turn it into sections. */
1590 mmo_scan (bfd *abfd)
1593 unsigned int lineno = 1;
1594 bfd_boolean error = FALSE;
1596 asection *sec = bfd_make_section_old_way (abfd, MMO_TEXT_SECTION_NAME);
1597 asection *non_spec_sec = NULL;
1598 bfd_vma non_spec_vma = 0;
1599 bfd_size_type nbytes_read = 0;
1600 /* Buffer with room to read a 64-bit value. */
1602 file_ptr stab_loc = -1;
1603 char *file_names[256];
1606 memset (file_names, 0, sizeof (file_names));
1608 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
1611 while ((nbytes_read = bfd_bread (buf, 4, abfd)) == 4)
1615 unsigned int y = bfd_get_8 (abfd, buf + 2);
1616 unsigned int z = bfd_get_8 (abfd, buf + 3);
1618 /* Change back to the original section for lopcodes other
1619 than LOP_QUOTE that comes after a LOP_SPEC. */
1620 if ((buf[1] != LOP_QUOTE || y != 0 || z != 1)
1621 && non_spec_sec != NULL)
1625 non_spec_sec = NULL;
1632 /* xgettext:c-format */
1633 (_("%pB: invalid mmo file: unsupported lopcode `%d'\n"),
1635 bfd_set_error (bfd_error_bad_value);
1639 /* Quote the next 32-bit word. */
1640 if (y != 0 || z != 1)
1643 /* xgettext:c-format */
1644 (_("%pB: invalid mmo file: expected YZ = 1"
1645 " got YZ = %d for lop_quote\n"),
1647 bfd_set_error (bfd_error_bad_value);
1650 if (bfd_bread (buf, 4, abfd) != 4)
1654 mmo_xore_32 (sec, vma, bfd_get_32 (abfd, buf));
1660 /* Set vma (and section). */
1661 vma = (bfd_vma) y << 56;
1664 /* Get a 32-bit value. */
1665 if (bfd_bread (buf, 4, abfd) != 4)
1668 vma += bfd_get_32 (abfd, buf);
1672 /* Get a 64-bit value. */
1673 if (bfd_bread (buf, 8, abfd) != 8)
1676 vma += bfd_get_64 (abfd, buf);
1681 /* xgettext:c-format */
1682 (_("%pB: invalid mmo file: expected z = 1 or z = 2,"
1683 " got z = %d for lop_loc\n"),
1685 bfd_set_error (bfd_error_bad_value);
1689 /* When we decide which section the data goes into, we might
1690 create the section. If that happens, make sure the VMA at
1691 creation time is tetra-aligned. */
1692 sec = mmo_decide_section (abfd, vma & ~3);
1698 /* Move forward within the same section. */
1701 sec = mmo_decide_section (abfd, vma);
1707 /* A fixup: Store the current vma somewhere. Position using
1708 same format as LOP_LOC. */
1710 bfd_vma p = (bfd_vma) y << 56;
1715 /* Get a 32-bit value. */
1716 if (bfd_bread (buf, 4, abfd) != 4)
1719 p += bfd_get_32 (abfd, buf);
1723 /* Get a 64-bit value. */
1724 if (bfd_bread (buf, 8, abfd) != 8)
1727 p += bfd_get_64 (abfd, buf);
1732 /* xgettext:c-format */
1733 (_("%pB: invalid mmo file: expected z = 1 or z = 2,"
1734 " got z = %d for lop_fixo\n"),
1736 bfd_set_error (bfd_error_bad_value);
1740 /* The section where we store this address might be a
1741 different one than the current section. */
1742 fixosec = mmo_decide_section (abfd, p);
1743 if (fixosec == NULL)
1745 mmo_xore_64 (fixosec, p, vma);
1750 /* A fixup: Store YZ of this lopcode into YZ at vma - 4 * yz. */
1752 unsigned int yz = (y * 256 + z);
1753 bfd_vma p = vma + 2 - 4 * yz;
1754 asection *fixrsec = mmo_decide_section (abfd, p);
1755 if (fixrsec == NULL)
1757 mmo_xore_16 (fixrsec, p, yz);
1762 /* A fixup, similar to lop_fixr, but taking larger numbers
1763 and can change branches into the opposite direction
1773 /* xgettext:c-format */
1774 (_("%pB: invalid mmo file: expected y = 0,"
1775 " got y = %d for lop_fixrx\n"),
1777 bfd_set_error (bfd_error_bad_value);
1781 if (z != 16 && z != 24)
1784 /* xgettext:c-format */
1785 (_("%pB: invalid mmo file: expected z = 16 or z = 24,"
1786 " got z = %d for lop_fixrx\n"),
1788 bfd_set_error (bfd_error_bad_value);
1792 /* Get the next 32-bit value. */
1793 if (bfd_bread (buf, 4, abfd) != 4)
1796 delta = bfd_get_32 (abfd, buf);
1798 /* Do an, ehm, involved calculation for the location of
1799 the fixup. See mmixal documentation for a verbose
1800 explanation. We follow it verbosely here for the
1803 p = vma - 4 * delta;
1804 else if (buf[0] == 1)
1805 p = vma - 4 * ((delta & 0xffffff) - (1 << z));
1809 /* xgettext:c-format */
1810 (_("%pB: invalid mmo file: leading byte of operand word"
1811 " must be 0 or 1, got %d for lop_fixrx\n"),
1813 bfd_set_error (bfd_error_bad_value);
1817 fixrsec = mmo_decide_section (abfd, vma);
1818 if (fixrsec == NULL)
1820 mmo_xore_32 (fixrsec, p, delta);
1825 /* Set current file and perhaps the file name. Reset line
1829 char *fname = bfd_malloc (z * 4 + 1);
1834 /* xgettext:c-format */
1835 (_("%pB: cannot allocate file name for file number %d,"
1837 abfd, y, z * 4 + 1);
1838 bfd_set_error (bfd_error_system_call);
1844 for (i = 0; i < z; i++)
1846 if (bfd_bread (fname + i * 4, 4, abfd) != 4)
1853 if (file_names[y] != NULL)
1856 /* xgettext:c-format */
1857 (_("%pB: invalid mmo file: file number %d `%s',"
1858 " was already entered as `%s'\n"),
1859 abfd, y, fname, file_names[y]);
1860 bfd_set_error (bfd_error_bad_value);
1864 file_names[y] = fname;
1867 if (file_names[y] == NULL)
1870 /* xgettext:c-format */
1871 (_("%pB: invalid mmo file: file name for number %d"
1872 " was not specified before use\n"),
1874 bfd_set_error (bfd_error_bad_value);
1882 /* Set line number. */
1883 lineno = y * 256 + z;
1884 /* FIXME: Create a sequence of mmo-specific line number
1885 entries for each section, then translate into canonical
1890 /* Special data follows until the next non-lop_quote
1894 sec = mmo_get_spec_section (abfd, y * 256 + z);
1903 /* We ignore header information, except we read in the
1904 creation time from the first 32-bit word with the time
1905 in seconds since era. */
1907 && bfd_bread (abfd->tdata.mmo_data->created, 4,
1911 for (i = 1; i < z; i++)
1912 if (bfd_bread (buf, 4, abfd) != 4)
1918 /* This tells of the contents of registers $Z..$255 at
1919 startup. We make a section out of it, with VMA = Z * 8,
1920 but only if Z != 255 or the contents is non-zero. */
1925 bfd_vma startaddr_octa;
1927 /* Read first octaword outside loop to simplify logic when
1928 excluding the Z == 255, octa == 0 case. */
1929 if (bfd_bread (buf, 8, abfd) != 8)
1932 first_octa = bfd_get_64 (abfd, buf);
1934 /* Don't emit contents for the trivial case which is
1935 always present; $255 pointing to Main. */
1939 = bfd_make_section_old_way (abfd,
1940 MMIX_REG_CONTENTS_SECTION_NAME);
1941 rsec->flags |= SEC_LINKER_CREATED;
1943 loc = mmo_get_loc (rsec, z * 8, (255 - z) * 8);
1944 bfd_put_64 (abfd, first_octa, loc);
1946 for (i = z + 1; i < 255; i++)
1948 if (bfd_bread (loc + (i - z) * 8, 8, abfd) != 8)
1952 /* Read out the last octabyte, and use it to set the
1954 if (bfd_bread (buf, 8, abfd) != 8)
1957 startaddr_octa = bfd_get_64 (abfd, buf);
1960 startaddr_octa = first_octa;
1962 if (! bfd_set_start_address (abfd, startaddr_octa))
1964 /* Currently this can't fail, but this should handle
1966 bfd_set_error (bfd_error_bad_value);
1973 /* We read in the symbols now, not later. */
1974 if (y != 0 || z != 0)
1977 /* xgettext:c-format */
1978 (_("%pB: invalid mmo file: fields y and z of lop_stab"
1979 " non-zero, y: %d, z: %d\n"),
1981 bfd_set_error (bfd_error_bad_value);
1985 /* Save the location, so we can check that YZ in the LOP_END
1987 stab_loc = bfd_tell (abfd);
1989 /* It's not said that an MMO can be without symbols (though
1990 mmixal will refuse to assemble files without Main), but
1991 it seems it would still be a valid mmo-file, so allow it.
1992 We detect the absence of a symbol area in that the upper
1993 limit is computed (from the lop_end YZ field) as 0.
1994 Don't call mmo_get_symbols; it can only detect the end of
1995 a valid symbol trie, not the absence of one. */
1996 if (abfd->tdata.mmo_data->max_symbol_length != 0
1997 && ! mmo_get_symbols (abfd))
2003 /* This must be the last 32-bit word in an mmo file.
2005 struct stat statbuf;
2006 file_ptr curpos = bfd_tell (abfd);
2008 if (bfd_stat (abfd, &statbuf) < 0)
2011 if (statbuf.st_size != curpos)
2014 /* xgettext:c-format */
2015 (_("%pB: invalid mmo file: lop_end not last item in"
2018 bfd_set_error (bfd_error_bad_value);
2022 /* Check that the YZ field is right. Subtract the size of
2023 this LOP_END in the calculation; YZ does not include
2025 if ((long) (y * 256 + z) * 4 != (curpos - stab_loc) - 4)
2028 /* xgettext:c-format */
2029 (_("%pB: invalid mmo file: YZ of lop_end (%ld)"
2030 " not equal to the number of tetras to the preceding"
2031 " lop_stab (%ld)\n"),
2032 abfd, (long) (y * 256 + z),
2033 (long) (curpos - stab_loc - 4)/4);
2034 bfd_set_error (bfd_error_bad_value);
2038 bfd_map_over_sections (abfd, mmo_map_set_sizes, NULL);
2045 /* This wasn't a lopcode, so store it in the current section. */
2046 mmo_xore_32 (sec, vma & ~3, bfd_get_32 (abfd, buf));
2053 /* We know this file is a multiple of four bytes (checked in
2054 mmo_object_p), so if we got something other than 0, this was a bad
2055 file (although it's more likely we'll get 0 in that case too).
2056 If we got end-of-file, then there was no lop_stab, so the file has
2059 if (nbytes_read != 0)
2060 bfd_set_error (bfd_error_system_call);
2062 bfd_set_error (bfd_error_bad_value);
2067 /* Mark the .text and .data section with their normal attribute if they
2068 contain anything. This is not redundant wrt. mmo_decide_section,
2069 since that code might never execute, and conversely the alloc+code
2070 section flags must be set then. */
2071 sec = bfd_get_section_by_name (abfd, MMO_TEXT_SECTION_NAME);
2073 && (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)
2074 && ! bfd_set_section_flags (abfd, sec,
2075 bfd_get_section_flags (abfd, sec)
2076 | SEC_ALLOC | SEC_LOAD | SEC_CODE))
2079 sec = bfd_get_section_by_name (abfd, MMO_DATA_SECTION_NAME);
2081 && (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)
2082 && ! bfd_set_section_flags (abfd, sec,
2083 bfd_get_section_flags (abfd, sec)
2084 | SEC_ALLOC | SEC_LOAD))
2087 /* Free whatever resources we took. */
2088 for (i = 0; i < sizeof (file_names) / sizeof (file_names[0]); i++)
2090 free (file_names[i]);
2094 /* A hook to set up object file dependent section information. For mmo,
2095 we point out the shape of allocated section contents. */
2098 mmo_new_section_hook (bfd *abfd, asection *newsect)
2100 if (!newsect->used_by_bfd)
2102 /* We zero-fill all fields and assume NULL is represented by an all
2103 zero-bit pattern. */
2104 newsect->used_by_bfd
2105 = bfd_zalloc (abfd, sizeof (struct mmo_section_data_struct));
2106 if (!newsect->used_by_bfd)
2110 /* Always align to at least 32-bit words. */
2111 newsect->alignment_power = 2;
2112 return _bfd_generic_new_section_hook (abfd, newsect);
2115 /* We already have section contents loaded for sections that have
2119 mmo_get_section_contents (bfd *abfd ATTRIBUTE_UNUSED,
2123 bfd_size_type bytes_to_do)
2125 /* Iterate over diminishing chunk sizes, copying contents, like
2126 mmo_set_section_contents. */
2129 /* A minor song-and-dance to make sure we're not bitten by the
2130 distant possibility of the cast from bfd_vma to int making the
2131 chunk zero-sized. */
2133 = (int) bytes_to_do != 0 ? bytes_to_do : MMO_SEC_CONTENTS_CHUNK_SIZE;
2137 loc = mmo_get_loc (sec, sec->vma + offset, chunk_size);
2138 while (loc == NULL && (chunk_size /= 2) != 0);
2140 if (chunk_size == 0)
2143 memcpy (location, loc, chunk_size);
2145 location = (bfd_byte *) location + chunk_size;
2146 bytes_to_do -= chunk_size;
2147 offset += chunk_size;
2152 /* Return the amount of memory needed to read the symbol table. */
2155 mmo_get_symtab_upper_bound (bfd *abfd)
2157 return (abfd->symcount + 1) * sizeof (asymbol *);
2160 /* Sort mmo symbols by serial number. */
2163 mmo_sort_mmo_symbols (const void *arg1, const void *arg2)
2165 const struct mmo_symbol *sym1 = *(const struct mmo_symbol **) arg1;
2166 const struct mmo_symbol *sym2 = *(const struct mmo_symbol **) arg2;
2168 /* Sort by serial number first. */
2169 if (sym1->serno < sym2->serno)
2171 else if (sym1->serno > sym2->serno)
2174 /* Then sort by address of the table entries. */
2175 return ((const char *) arg1 - (const char *) arg2);
2178 /* Translate the symbol table. */
2181 mmo_canonicalize_symtab (bfd *abfd, asymbol **alocation)
2183 unsigned int symcount = bfd_get_symcount (abfd);
2187 csymbols = abfd->tdata.mmo_data->csymbols;
2188 if (csymbols == NULL && symcount != 0)
2191 struct mmo_symbol *s;
2192 struct mmo_symbol **msp;
2194 /* First we store the symbols into the table we'll return, then we
2195 qsort it on the serial number, with secondary on the address of
2196 the symbol, to preserve order if there would be non-unique serial
2198 for (s = abfd->tdata.mmo_data->symbols,
2199 msp = (struct mmo_symbol **) alocation;
2206 qsort (alocation, symcount, sizeof (struct mmo_symbol *),
2207 mmo_sort_mmo_symbols);
2209 csymbols = (asymbol *) bfd_alloc (abfd, symcount * sizeof (asymbol));
2210 if (csymbols == NULL)
2212 abfd->tdata.mmo_data->csymbols = csymbols;
2214 for (msp = (struct mmo_symbol **) alocation, c = csymbols;
2221 c->value = s->value;
2222 c->flags = BSF_GLOBAL;
2224 if (s->sym_type == mmo_data_sym)
2227 = bfd_get_section_by_name (abfd, MMO_DATA_SECTION_NAME);
2229 if (c->section == NULL)
2230 c->section = bfd_abs_section_ptr;
2232 c->value -= c->section->vma;
2234 else if (s->sym_type == mmo_undef_sym)
2235 c->section = bfd_und_section_ptr;
2236 else if (s->sym_type == mmo_reg_sym)
2239 = bfd_make_section_old_way (abfd, MMIX_REG_SECTION_NAME);
2240 c->section->flags |= SEC_LINKER_CREATED;
2245 = bfd_get_section_by_name (abfd, MMO_TEXT_SECTION_NAME);
2249 && c->value >= textsec->vma
2250 && c->value <= textsec->vma + textsec->size)
2252 c->section = textsec;
2253 c->value -= c->section->vma;
2255 /* In mmo, symbol types depend on the VMA. Therefore, if
2256 the data section isn't within the usual bounds, its
2257 symbols are marked as absolute. Correct that. This
2258 means we can't have absolute symbols with values matching
2259 data section addresses, but we also can't have with
2260 absolute symbols with values matching text section
2261 addresses. For such needs, use the ELF format. */
2263 = bfd_get_section_by_name (abfd,
2264 MMO_DATA_SECTION_NAME))
2266 && c->value >= datasec->vma
2267 && c->value <= datasec->vma + datasec->size)
2269 c->section = datasec;
2270 c->value -= c->section->vma;
2273 c->section = bfd_abs_section_ptr;
2280 /* Last, overwrite the incoming table with the right-type entries. */
2281 for (i = 0; i < symcount; i++)
2282 *alocation++ = csymbols++;
2288 /* Get information about a symbol. */
2291 mmo_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2292 asymbol *symbol, symbol_info *ret)
2294 bfd_symbol_info (symbol, ret);
2298 mmo_print_symbol (bfd *abfd, void *afile, asymbol *symbol,
2299 bfd_print_symbol_type how)
2301 FILE *file = (FILE *) afile;
2305 case bfd_print_symbol_name:
2306 fprintf (file, "%s", symbol->name);
2309 bfd_print_symbol_vandf (abfd, file, symbol);
2311 fprintf (file, " %-5s %s",
2312 symbol->section->name,
2317 /* We can't map a file directly into executable code, so the
2318 size of header information is irrelevant. */
2321 mmo_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
2322 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2327 /* Write the (section-neutral) file preamble. */
2330 mmo_internal_write_header (bfd *abfd)
2332 const char lop_pre_bfd[] = { LOP, LOP_PRE, 1, 1};
2334 if (bfd_bwrite (lop_pre_bfd, 4, abfd) != 4)
2337 /* Copy creation time of original file. */
2338 if (bfd_bwrite (abfd->tdata.mmo_data->created, 4, abfd) != 4)
2344 /* Write the LOP_POST record, with global register initializations.
2345 Z is the Z field of the LOP_POST, corresponding to 255 - number of
2346 registers at DATA. The Z = 255 field is filled in with the
2350 mmo_internal_write_post (bfd *abfd, int z, asection *sec)
2354 mmo_write_tetra_raw (abfd, (LOP << 24) | (LOP_POST << 16) | z);
2356 for (i = z; i < 255; i++)
2358 bfd_byte *data = mmo_get_loc (sec, i * 8, 8);
2360 if (bfd_bwrite (data, 8, abfd) != 8)
2364 /* For Z == $255, we always emit the start location; supposedly Main,
2365 but we have it handy at bfd_get_start_address. If we're called with
2366 Z == 255, don't assume DATA is valid. */
2367 bfd_put_64 (abfd, bfd_get_start_address (abfd), buf);
2369 return ! abfd->tdata.mmo_data->have_error && bfd_bwrite (buf, 8, abfd) == 8;
2372 /* Translate to and from BFD flags. This is to make sure that we don't
2373 get bitten by BFD flag number changes. */
2376 mmo_sec_flags_from_bfd_flags (flagword flags)
2378 flagword oflags = 0;
2380 if (flags & SEC_ALLOC)
2381 oflags |= MMO_SEC_ALLOC;
2382 if (flags & SEC_LOAD)
2383 oflags |= MMO_SEC_LOAD;
2384 if (flags & SEC_RELOC)
2385 oflags |= MMO_SEC_RELOC;
2386 if (flags & SEC_READONLY)
2387 oflags |= MMO_SEC_READONLY;
2388 if (flags & SEC_CODE)
2389 oflags |= MMO_SEC_CODE;
2390 if (flags & SEC_DATA)
2391 oflags |= MMO_SEC_DATA;
2392 if (flags & SEC_NEVER_LOAD)
2393 oflags |= MMO_SEC_NEVER_LOAD;
2394 if (flags & SEC_IS_COMMON)
2395 oflags |= MMO_SEC_IS_COMMON;
2396 if (flags & SEC_DEBUGGING)
2397 oflags |= MMO_SEC_DEBUGGING;
2403 bfd_sec_flags_from_mmo_flags (flagword flags)
2405 flagword oflags = 0;
2407 if (flags & MMO_SEC_ALLOC)
2408 oflags |= SEC_ALLOC;
2409 if (flags & MMO_SEC_LOAD)
2411 if (flags & MMO_SEC_RELOC)
2412 oflags |= SEC_RELOC;
2413 if (flags & MMO_SEC_READONLY)
2414 oflags |= SEC_READONLY;
2415 if (flags & MMO_SEC_CODE)
2417 if (flags & MMO_SEC_DATA)
2419 if (flags & MMO_SEC_NEVER_LOAD)
2420 oflags |= SEC_NEVER_LOAD;
2421 if (flags & MMO_SEC_IS_COMMON)
2422 oflags |= SEC_IS_COMMON;
2423 if (flags & MMO_SEC_DEBUGGING)
2424 oflags |= SEC_DEBUGGING;
2429 /* Return TRUE iff the leading or trailing tetrabyte in SEC is defined and
2433 mmo_has_leading_or_trailing_zero_tetra_p (bfd *abfd, asection *sec)
2435 bfd_vma secaddr = bfd_get_section_vma (abfd, sec);
2440 if (bfd_get_32 (abfd, mmo_get_loc (sec, secaddr, 4)) == 0
2441 && bfd_get_32 (abfd,
2442 mmo_get_loc (sec, secaddr + sec->size - 4, 4)) == 0)
2448 /* Write a section. */
2451 mmo_internal_write_section (bfd *abfd, asection *sec)
2453 /* We do it differently depending on what section this is:
2455 ".text": Output, prepended by information about the first source file
2456 (not yet implemented.)
2460 (".MMIX.reg_contents": Not handled here.)
2462 Anything else: Output inside a lop_spec 80, in the format described
2465 if (strcmp (sec->name, MMO_TEXT_SECTION_NAME) == 0)
2467 bfd_vma secaddr = bfd_get_section_vma (abfd, sec);
2469 /* Because leading and trailing zeros are omitted in output, we need to
2470 specify the section boundaries so they're correct when the file
2471 is read in again. That's also the case if this section is
2472 specified as not within its usual boundaries or alignments. */
2474 && (secaddr + sec->size >= (bfd_vma) 1 << 56
2475 || (secaddr & 3) != 0
2476 || (sec->size & 3) != 0
2477 || mmo_has_leading_or_trailing_zero_tetra_p (abfd, sec)))
2479 if (!mmo_write_section_description (abfd, sec))
2483 /* FIXME: Output source file name and line number. */
2484 return mmo_write_loc_chunk_list (abfd, mmo_section_data (sec)->head);
2486 else if (strcmp (sec->name, MMO_DATA_SECTION_NAME) == 0)
2488 bfd_vma secaddr = bfd_get_section_vma (abfd, sec);
2490 /* Same goes as for MMO_TEXT_SECTION_NAME above. */
2492 && (secaddr < (bfd_vma) 0x20 << 56
2493 || secaddr + sec->size >= (bfd_vma) 0x21 << 56
2494 || (secaddr & 3) != 0
2495 || (sec->size & 3) != 0
2496 || mmo_has_leading_or_trailing_zero_tetra_p (abfd, sec)))
2498 if (!mmo_write_section_description (abfd, sec))
2502 return mmo_write_loc_chunk_list (abfd, mmo_section_data (sec)->head);
2504 else if (strcmp (sec->name, MMIX_REG_CONTENTS_SECTION_NAME) == 0)
2505 /* Not handled here. */
2507 /* This would normally be an abort call since this can't happen, but
2508 we don't do that. */
2509 bfd_set_error (bfd_error_bad_value);
2512 else if (CONST_STRNEQ (sec->name, MMIX_OTHER_SPEC_SECTION_PREFIX))
2514 int n = atoi (sec->name + strlen (MMIX_OTHER_SPEC_SECTION_PREFIX));
2516 mmo_write_tetra_raw (abfd, (LOP << 24) | (LOP_SPEC << 16) | n);
2517 return (! abfd->tdata.mmo_data->have_error
2518 && mmo_write_chunk_list (abfd, mmo_section_data (sec)->head));
2520 /* Ignore sections that are just allocated or empty; we write out
2522 else if ((bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS) != 0
2525 if (!mmo_write_section_description (abfd, sec))
2528 /* Writing a LOP_LOC ends the LOP_SPEC data, and makes data actually
2530 if (bfd_get_section_flags (abfd, sec) & SEC_LOAD)
2531 return (! abfd->tdata.mmo_data->have_error
2532 && mmo_write_loc_chunk_list (abfd,
2533 mmo_section_data (sec)->head));
2534 return (! abfd->tdata.mmo_data->have_error
2535 && mmo_write_chunk_list (abfd, mmo_section_data (sec)->head));
2538 /* Some section without contents. */
2542 /* Write the description of a section, extended-mmo-style. */
2545 mmo_write_section_description (bfd *abfd, asection *sec)
2547 /* Keep the following document-comment formatted the way it is. */
2550 mmo section mapping, , Symbol-table, mmo
2554 The implementation in BFD uses special data type 80 (decimal) to
2555 encapsulate and describe named sections, containing e.g.@: debug
2556 information. If needed, any datum in the encapsulation will be
2557 quoted using lop_quote. First comes a 32-bit word holding the
2558 number of 32-bit words containing the zero-terminated zero-padded
2559 segment name. After the name there's a 32-bit word holding flags
2560 describing the section type. Then comes a 64-bit big-endian word
2561 with the section length (in bytes), then another with the section
2562 start address. Depending on the type of section, the contents
2563 might follow, zero-padded to 32-bit boundary. For a loadable
2564 section (such as data or code), the contents might follow at some
2565 later point, not necessarily immediately, as a lop_loc with the
2566 same start address as in the section description, followed by the
2567 contents. This in effect forms a descriptor that must be emitted
2568 before the actual contents. Sections described this way must not
2571 For areas that don't have such descriptors, synthetic sections are
2572 formed by BFD. Consecutive contents in the two memory areas
2573 @samp{0x0000@dots{}00} to @samp{0x01ff@dots{}ff} and
2574 @samp{0x2000@dots{}00} to @samp{0x20ff@dots{}ff} are entered in
2575 sections named <<.text>> and <<.data>> respectively. If an area
2576 is not otherwise described, but would together with a neighboring
2577 lower area be less than @samp{0x40000000} bytes long, it is joined
2578 with the lower area and the gap is zero-filled. For other cases,
2579 a new section is formed, named <<.MMIX.sec.@var{n}>>. Here,
2580 @var{n} is a number, a running count through the mmo file,
2584 A loadable section specified as:
2586 | .section secname,"ax"
2587 | TETRA 1,2,3,4,-1,-2009
2590 and linked to address @samp{0x4}, is represented by the sequence:
2592 | 0x98080050 - lop_spec 80
2593 | 0x00000002 - two 32-bit words for the section name
2594 | 0x7365636e - "secn"
2595 | 0x616d6500 - "ame\0"
2596 | 0x00000033 - flags CODE, READONLY, LOAD, ALLOC
2597 | 0x00000000 - high 32 bits of section length
2598 | 0x0000001c - section length is 28 bytes; 6 * 4 + 1 + alignment to 32 bits
2599 | 0x00000000 - high 32 bits of section address
2600 | 0x00000004 - section address is 4
2601 | 0x98010002 - 64 bits with address of following data
2602 | 0x00000000 - high 32 bits of address
2603 | 0x00000004 - low 32 bits: data starts at address 4
2609 | 0xfffff827 - -2009
2610 | 0x50000000 - 80 as a byte, padded with zeros.
2612 Note that the lop_spec wrapping does not include the section
2613 contents. Compare this to a non-loaded section specified as:
2616 | TETRA 200001,100002
2619 This, when linked to address @samp{0x200000000000001c}, is
2622 | 0x98080050 - lop_spec 80
2623 | 0x00000002 - two 32-bit words for the section name
2624 | 0x7365636e - "thir"
2625 | 0x616d6500 - "dsec"
2626 | 0x00000010 - flag READONLY
2627 | 0x00000000 - high 32 bits of section length
2628 | 0x0000000c - section length is 12 bytes; 2 * 4 + 2 + alignment to 32 bits
2629 | 0x20000000 - high 32 bits of address
2630 | 0x0000001c - low 32 bits of address 0x200000000000001c
2631 | 0x00030d41 - 200001
2632 | 0x000186a2 - 100002
2633 | 0x26280000 - 38, 40 as bytes, padded with zeros
2635 For the latter example, the section contents must not be
2636 loaded in memory, and is therefore specified as part of the
2637 special data. The address is usually unimportant but might
2638 provide information for e.g.@: the DWARF 2 debugging format. */
2640 mmo_write_tetra_raw (abfd, LOP_SPEC_SECTION);
2641 mmo_write_tetra (abfd, (strlen (sec->name) + 3) / 4);
2642 mmo_write_chunk (abfd, (bfd_byte *) sec->name, strlen (sec->name));
2643 mmo_flush_chunk (abfd);
2644 /* FIXME: We can get debug sections (.debug_line & Co.) with a section
2645 flag still having SEC_RELOC set. Investigate. This might be true
2646 for all alien sections; perhaps mmo.em should clear that flag. Might
2647 be related to weak references. */
2648 mmo_write_tetra (abfd,
2649 mmo_sec_flags_from_bfd_flags
2650 (bfd_get_section_flags (abfd, sec)));
2651 mmo_write_octa (abfd, sec->size);
2652 mmo_write_octa (abfd, bfd_get_section_vma (abfd, sec));
2656 /* We save up all data before output. */
2659 mmo_set_section_contents (bfd *abfd ATTRIBUTE_UNUSED, sec_ptr sec,
2660 const void *location, file_ptr offset,
2661 bfd_size_type bytes_to_do)
2663 /* Iterate over diminishing chunk sizes, copying contents. */
2666 /* A minor song-and-dance to make sure we're not bitten by the
2667 distant possibility of the cast from bfd_vma to int making the
2668 chunk zero-sized. */
2670 = (int) bytes_to_do != 0 ? bytes_to_do : MMO_SEC_CONTENTS_CHUNK_SIZE;
2674 loc = mmo_get_loc (sec, sec->vma + offset, chunk_size);
2675 while (loc == NULL && (chunk_size /= 2) != 0);
2677 if (chunk_size == 0)
2680 memcpy (loc, location, chunk_size);
2682 location = (bfd_byte *) location + chunk_size;
2683 bytes_to_do -= chunk_size;
2684 offset += chunk_size;
2689 /* Add a symbol to a trie-tree. */
2692 mmo_internal_add_3_sym (bfd *abfd, struct mmo_symbol_trie *rootp,
2693 const struct mmo_symbol *symp)
2695 const char *name = symp->name;
2696 struct mmo_symbol_trie *trie = rootp;
2697 struct mmo_symbol_trie **triep = NULL;
2699 while (*name && trie != NULL)
2701 if (*name < trie->symchar)
2703 triep = &trie->left;
2706 else if (*name > trie->symchar)
2708 triep = &trie->right;
2711 else if (*name == trie->symchar)
2713 triep = &trie->middle;
2716 /* Make sure "trie" points to where we should fill in the
2717 current symbol whenever we've iterated through "name". We
2718 would lose the right position if we encounter "foobar" then
2721 trie = trie->middle;
2727 /* Create middle branches for the rest of the characters. */
2728 trie = bfd_zalloc (abfd, sizeof (struct mmo_symbol_trie));
2730 trie->symchar = *name++;
2731 triep = &trie->middle;
2734 /* We discover a duplicate symbol rather late in the process, but still;
2735 we discover it and bail out. */
2736 if (trie->sym.name != NULL)
2739 /* xgettext:c-format */
2740 (_("%pB: invalid symbol table: duplicate symbol `%s'\n"),
2741 abfd, trie->sym.name);
2742 bfd_set_error (bfd_error_bad_value);
2746 memcpy (&trie->sym, symp, sizeof *symp);
2750 /* Find out the length of the serialized version of a trie in bytes. */
2753 mmo_internal_3_length (bfd *abfd, struct mmo_symbol_trie *trie)
2755 /* First, one for the control byte. */
2756 unsigned int length = 1;
2761 /* Add in the recursion to the left. */
2762 length += mmo_internal_3_length (abfd, trie->left);
2764 /* Add in the middle trie and the character. */
2765 length += 1 + mmo_internal_3_length (abfd, trie->middle);
2767 /* Add in the recursion to the right. */
2768 length += mmo_internal_3_length (abfd, trie->right);
2770 /* Add in bytes for the symbol (if this is an endnode). */
2771 if (trie->sym.name != NULL)
2773 unsigned int serno = trie->sym.serno;
2775 /* First what it takes to encode the value. */
2776 if (trie->sym.sym_type == mmo_reg_sym)
2778 else if (trie->sym.sym_type == mmo_undef_sym)
2782 bfd_vma value = trie->sym.value;
2784 /* Coded in one to eight following bytes. */
2785 if (trie->sym.sym_type == mmo_data_sym)
2786 value -= (bfd_vma) 0x20 << 56;
2796 /* Find out what it takes to encode the serial number. */
2808 /* Helper function for outputting the serial number of a symbol, output as
2809 a variant of leb128 (see dwarf2 documentation) which could be called
2810 beb128. Using a helper function and recursion simplifies debugging. */
2813 mmo_beb128_out (bfd *abfd, int serno, int marker)
2816 mmo_beb128_out (abfd, serno >> 7, 0);
2817 mmo_write_byte (abfd, marker | (serno & 0x7f));
2820 /* Serialize a trie. */
2823 mmo_internal_3_dump (bfd *abfd, struct mmo_symbol_trie *trie)
2825 bfd_byte control = 0;
2831 control |= MMO3_LEFT;
2834 control |= MMO3_MIDDLE;
2837 control |= MMO3_RIGHT;
2839 if (trie->sym.name != NULL)
2841 /* Encode the symbol type and length of value bytes. */
2842 if (trie->sym.sym_type == mmo_reg_sym)
2843 control |= MMO3_REGQUAL_BITS;
2844 else if (trie->sym.sym_type == mmo_undef_sym)
2845 control |= MMO3_UNDEF;
2848 bfd_vma value = trie->sym.value;
2850 /* Coded in 1..8 following bytes. */
2851 if (trie->sym.sym_type == mmo_data_sym)
2853 control |= MMO3_DATA;
2854 value -= (bfd_vma) 0x20 << 56;
2866 /* The control byte is output before recursing. */
2867 mmo_write_byte (abfd, control);
2869 mmo_internal_3_dump (abfd, trie->left);
2871 if (control & MMO3_SYMBITS)
2873 mmo_write_byte (abfd, trie->symchar);
2875 if (trie->sym.name != NULL)
2877 if (trie->sym.sym_type == mmo_reg_sym)
2878 mmo_write_byte (abfd, trie->sym.value);
2879 else if (trie->sym.sym_type == mmo_undef_sym)
2881 mmo_write_byte (abfd, 0);
2882 mmo_write_byte (abfd, 0);
2886 bfd_vma value = trie->sym.value;
2888 bfd_byte byte_n = control & 15;
2890 /* Coded in 1..8 following bytes. Note that the value is
2891 shifted out big-endian. */
2892 if (trie->sym.sym_type == mmo_data_sym)
2894 value -= (bfd_vma) 0x20 << 56;
2900 mmo_write_byte (abfd, (value >> ((byte_n - 1) * 8)) & 0xff);
2903 while (byte_n != 0);
2906 mmo_beb128_out (abfd, trie->sym.serno, 128);
2908 mmo_internal_3_dump (abfd, trie->middle);
2910 mmo_internal_3_dump (abfd, trie->right);
2913 /* Write symbols in mmo format. Also write the lop_end terminator. */
2916 mmo_write_symbols_and_terminator (bfd *abfd)
2918 int count = bfd_get_symcount (abfd);
2920 asymbol **orig_table = bfd_get_outsymbols (abfd);
2922 struct mmo_symbol_trie root;
2927 /* Create a symbol for "Main". */
2928 asymbol *fakemain = bfd_make_empty_symbol (abfd);
2930 fakemain->flags = BSF_GLOBAL;
2931 fakemain->value = bfd_get_start_address (abfd);
2932 fakemain->name = MMIX_START_SYMBOL_NAME;
2933 fakemain->section = bfd_abs_section_ptr;
2935 memset (&root, 0, sizeof (root));
2937 /* Make all symbols take a left turn. */
2938 root.symchar = 0xff;
2940 /* There must always be a ":Main", so we'll add one if there are no
2941 symbols. Make sure we have room for it. */
2942 table = bfd_alloc (abfd, (count + 1) * sizeof (asymbol *));
2946 memcpy (table, orig_table, count * sizeof (asymbol *));
2948 /* Move :Main (if there is one) to the first position. This is
2949 necessary to get the same layout of the trie-tree when linking as
2950 when objcopying the result as in the objcopy.exp test "simple objcopy
2951 of executable". It also automatically takes care of assigning serial
2952 number 1 to :Main (as is mandatory). */
2953 for (i = 0; i < count; i++)
2954 if (table[i] != NULL
2955 && strcmp (table[i]->name, MMIX_START_SYMBOL_NAME) == 0
2956 && (table[i]->flags & (BSF_DEBUGGING|BSF_GLOBAL)) == BSF_GLOBAL)
2958 asymbol *mainsym = table[i];
2961 + mainsym->section->output_section->vma
2962 + mainsym->section->output_offset);
2963 memcpy (table + 1, orig_table, i * sizeof (asymbol *));
2966 /* Check that the value assigned to :Main is the same as the entry
2967 address. The default linker script asserts this. This is as
2968 good a place as any to check this consistency. */
2969 if (mainvalue != bfd_get_start_address (abfd)
2970 && !mmo_ignore_symbol_consistency (abfd))
2972 /* Arbitrary buffer to hold the printable representation of a
2975 char vmas_start[40];
2976 bfd_vma vma_start = bfd_get_start_address (abfd);
2978 sprintf_vma (vmas_main, mainvalue);
2979 sprintf_vma (vmas_start, vma_start);
2982 /* xgettext:c-format */
2983 (_("%pB: bad symbol definition: `Main' set to %s rather"
2984 " than the start address %s\n"),
2985 abfd, vmas_main, vmas_start);
2986 bfd_set_error (bfd_error_bad_value);
2991 if (i == count && count != 0)
2993 /* When there are symbols, there must be a :Main. There was no
2994 :Main, so we need to add it manually. */
2995 memcpy (table + 1, orig_table, count * sizeof (asymbol *));
2996 table[0] = fakemain;
3000 /* Don't bother inspecting symbols in plugin dummy objects; their
3001 symbols aren't fully inspectable. */
3002 if ((abfd->flags & BFD_PLUGIN) == 0)
3004 for (i = 0, serno = 1; i < count && table[i] != NULL; i++)
3006 asymbol *s = table[i];
3008 /* It's not enough to consult bfd_is_local_label, since it does not
3009 mean "local" in the sense of linkable-and-observable-after-link.
3010 Let's just check the BSF_GLOBAL flag.
3012 Also, don't export symbols with characters not in the
3014 if ((s->flags & (BSF_DEBUGGING|BSF_GLOBAL)) == BSF_GLOBAL
3016 valid_mmo_symbol_character_set) == strlen (s->name))
3018 struct mmo_symbol sym;
3019 memset (&sym, 0, sizeof (sym));
3021 /* Need to strip const here; strdup:ing would leak and the
3022 existing string must be safe to reuse. */
3023 sym.name = (char *) s->name;
3026 + s->section->output_section->vma
3027 + s->section->output_offset;
3029 if (bfd_is_und_section (s->section))
3030 sym.sym_type = mmo_undef_sym;
3031 else if (strcmp (s->section->name, MMO_DATA_SECTION_NAME) == 0
3032 /* The encoding of data symbols require that the "rest"
3033 of the value fits in 6 bytes, so the upper two bytes
3034 must be 0x2000. All other symbols get to be the
3036 && (sym.value >> 48) == 0x2000)
3037 sym.sym_type = mmo_data_sym;
3038 else if (strcmp (s->section->name, MMIX_REG_SECTION_NAME) == 0)
3039 sym.sym_type = mmo_reg_sym;
3040 else if (strcmp (s->section->name,
3041 MMIX_REG_CONTENTS_SECTION_NAME) == 0)
3043 sym.sym_type = mmo_reg_sym;
3047 sym.sym_type = mmo_abs_sym;
3049 /* FIXME: We assume the order of the received symbols is an
3050 ordered mapping of the serial numbers. This is not
3051 necessarily true if we e.g. objcopy a mmo file to another and
3052 there are gaps in the numbering. Not sure if this can
3053 happen. Not sure what to do. */
3054 sym.serno = serno++;
3056 if (! mmo_internal_add_3_sym (abfd, &root, &sym))
3062 /* Change the root node to be a ":"-prefix. */
3064 root.middle = root.left;
3068 /* We have to find out if we can fit the whole symbol table in the mmo
3069 symtab. It would be bad to assume we can always fit it in 262144
3070 bytes. If we can't, just leave the Main symbol. */
3071 trie_len = (mmo_internal_3_length (abfd, &root) + 3)/4;
3073 if (trie_len > 0xffff)
3075 /* Test this code by using a lower limit in the test above and check
3076 that the single "Main" symbol is emitted and handled properly.
3077 There's no specific test-case. */
3078 struct mmo_symbol sym;
3081 /* xgettext:c-format */
3082 (_("%pB: warning: symbol table too large for mmo, larger than 65535"
3083 " 32-bit words: %d. Only `Main' will be emitted.\n"),
3086 memset (&sym, 0, sizeof (sym));
3087 sym.sym_type = mmo_abs_sym;
3088 sym.name = MMIX_START_SYMBOL_NAME;
3090 sym.value = bfd_get_start_address (abfd);
3092 /* Then patch up a symbol table to be just the ":Main" symbol. */
3093 memset (&root, 0, sizeof (root));
3094 root.left = root.middle;
3095 root.symchar = 0xff;
3099 if (! mmo_internal_add_3_sym (abfd, &root, &sym))
3103 root.middle = root.left;
3107 trie_len = (mmo_internal_3_length (abfd, &root) + 3)/4;
3110 /* Reset the written-bytes counter. */
3111 abfd->tdata.mmo_data->byte_no = 0;
3113 /* Put out the lop_stab mark. */
3114 bfd_put_32 (abfd, (LOP << 24) | (LOP_STAB << 16), buf);
3115 if (bfd_bwrite (buf, 4, abfd) != 4)
3118 /* Dump out symbols. */
3119 mmo_internal_3_dump (abfd, &root);
3121 if (trie_len != (abfd->tdata.mmo_data->byte_no + 3)/4)
3123 /* I haven't seen this trig. It seems no use claiming this case
3124 isn't debugged and abort if we get here. Instead emit a
3125 diagnostic and fail "normally". */
3127 /* xgettext:c-format */
3128 (_("%pB: internal error, symbol table changed size from %d to %d"
3131 (abfd->tdata.mmo_data->byte_no + 3)/4);
3132 bfd_set_error (bfd_error_bad_value);
3136 /* Dump out remaining bytes in the buffer and handle I/O errors by
3137 propagating errors. */
3138 if ((abfd->tdata.mmo_data->byte_no % 4) != 0
3139 || abfd->tdata.mmo_data->have_error)
3141 memset (abfd->tdata.mmo_data->buf + (abfd->tdata.mmo_data->byte_no % 4),
3142 0, 4 - (abfd->tdata.mmo_data->byte_no % 4));
3144 if (abfd->tdata.mmo_data->have_error
3145 || bfd_bwrite (abfd->tdata.mmo_data->buf, 4, abfd) != 4)
3149 bfd_put_32 (abfd, (LOP << 24) | (LOP_END << 16) | trie_len, buf);
3150 return bfd_bwrite (buf, 4, abfd) == 4;
3153 /* Write section unless it is the register contents section. For that, we
3154 instead store the section in the supplied pointer. This function is
3155 used through bfd_map_over_sections. */
3158 mmo_write_section_unless_reg_contents (bfd *abfd, asection *sec, void *p)
3160 struct mmo_write_sec_info *infop = (struct mmo_write_sec_info *) p;
3162 if (! infop->retval)
3165 if (strcmp (sec->name, MMIX_REG_CONTENTS_SECTION_NAME) == 0)
3167 infop->reg_section = sec;
3171 /* Exclude the convenience register section. */
3172 if (strcmp (sec->name, MMIX_REG_SECTION_NAME) == 0)
3174 if (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)
3176 /* Make sure it hasn't got contents. It seems impossible to
3177 make it carry contents, so we don't have a test-case for
3180 /* xgettext:c-format */
3181 (_("%pB: internal error, internal register section %pA had"
3184 bfd_set_error (bfd_error_bad_value);
3185 infop->retval = FALSE;
3192 infop->retval = mmo_internal_write_section (abfd, sec);
3195 /* Do the actual output of a file. Assumes mmo_set_section_contents is
3199 mmo_write_object_contents (bfd *abfd)
3201 struct mmo_write_sec_info wsecinfo;
3203 /* First, there are a few words of preamble. */
3204 if (! mmo_internal_write_header (abfd))
3207 wsecinfo.reg_section = NULL;
3208 wsecinfo.retval = TRUE;
3210 bfd_map_over_sections (abfd, mmo_write_section_unless_reg_contents,
3213 if (! wsecinfo.retval)
3216 if (wsecinfo.reg_section != NULL)
3218 asection *sec = wsecinfo.reg_section;
3219 unsigned int z = (unsigned int) (sec->vma / 8);
3221 /* Registers 0..31 must not be global. Do sanity check on the "vma"
3222 of the register contents section and check that it corresponds to
3223 the length of the section. */
3224 if (z < 32 || z >= 255 || (sec->vma & 7) != 0
3225 || sec->vma != 256 * 8 - sec->size - 8)
3227 bfd_set_error (bfd_error_bad_value);
3230 /* There must always be at least one such register. */
3232 (_("%pB: no initialized registers; section length 0\n"),
3234 else if (sec->vma > (256 - 32) * 8)
3235 /* Provide better error message for the case of too many
3236 global registers. */
3238 /* xgettext:c-format */
3239 (_("%pB: too many initialized registers; section length %" PRId64),
3240 abfd, (int64_t) sec->size);
3243 /* xgettext:c-format */
3244 (_("%pB: invalid start address for initialized registers of"
3245 " length %" PRId64 ": %#" PRIx64),
3246 abfd, (int64_t) sec->size, (uint64_t) sec->vma);
3251 if (! mmo_internal_write_post (abfd, z, sec))
3255 if (! mmo_internal_write_post (abfd, 255, NULL))
3258 return mmo_write_symbols_and_terminator (abfd);
3261 /* If there's anything in particular in a mmo bfd that we want to free,
3262 make this a real function. Only do this if you see major memory
3263 thrashing; zealous free:ing will cause unwanted behavior, especially if
3264 you "free" memory allocated with "bfd_alloc", or even "bfd_release" a
3265 block allocated with "bfd_alloc"; they're really allocated from an
3266 obstack, and we don't know what was allocated there since this
3267 particular allocation. */
3269 #define mmo_close_and_cleanup _bfd_generic_close_and_cleanup
3270 #define mmo_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
3272 /* Perhaps we need to adjust this one; mmo labels (originally) without a
3273 leading ':' might more appropriately be called local. */
3274 #define mmo_bfd_is_local_label_name bfd_generic_is_local_label_name
3275 #define mmo_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
3277 #define mmo_get_symbol_version_string \
3278 _bfd_nosymbols_get_symbol_version_string
3280 /* Is this one really used or defined by anyone? */
3281 #define mmo_get_lineno _bfd_nosymbols_get_lineno
3283 /* FIXME: We can do better on this one, if we have a dwarf2 .debug_line
3284 section or if MMO line numbers are implemented. */
3285 #define mmo_find_nearest_line _bfd_nosymbols_find_nearest_line
3286 #define mmo_find_line _bfd_nosymbols_find_line
3287 #define mmo_find_inliner_info _bfd_nosymbols_find_inliner_info
3288 #define mmo_make_empty_symbol _bfd_generic_make_empty_symbol
3289 #define mmo_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
3290 #define mmo_read_minisymbols _bfd_generic_read_minisymbols
3291 #define mmo_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
3293 #define mmo_get_section_contents_in_window \
3294 _bfd_generic_get_section_contents_in_window
3295 #define mmo_bfd_get_relocated_section_contents \
3296 bfd_generic_get_relocated_section_contents
3297 #define mmo_bfd_gc_sections bfd_generic_gc_sections
3298 #define mmo_bfd_lookup_section_flags bfd_generic_lookup_section_flags
3299 #define mmo_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
3300 #define mmo_bfd_link_add_symbols _bfd_generic_link_add_symbols
3301 #define mmo_bfd_link_just_syms _bfd_generic_link_just_syms
3302 #define mmo_bfd_copy_link_hash_symbol_type \
3303 _bfd_generic_copy_link_hash_symbol_type
3304 #define mmo_bfd_final_link _bfd_generic_final_link
3305 #define mmo_bfd_link_split_section _bfd_generic_link_split_section
3306 #define mmo_bfd_link_check_relocs _bfd_generic_link_check_relocs
3308 /* Strictly speaking, only MMIX uses this restricted format, but let's not
3309 stop anybody from shooting themselves in the foot. */
3310 #define mmo_set_arch_mach bfd_default_set_arch_mach
3311 #define mmo_bfd_relax_section bfd_generic_relax_section
3312 #define mmo_bfd_merge_sections bfd_generic_merge_sections
3313 #define mmo_bfd_is_group_section bfd_generic_is_group_section
3314 #define mmo_bfd_discard_group bfd_generic_discard_group
3315 #define mmo_section_already_linked \
3316 _bfd_generic_section_already_linked
3317 #define mmo_bfd_define_common_symbol bfd_generic_define_common_symbol
3318 #define mmo_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
3319 #define mmo_bfd_define_start_stop bfd_generic_define_start_stop
3321 /* We want to copy time of creation, otherwise we'd use
3322 BFD_JUMP_TABLE_COPY (_bfd_generic). */
3323 #define mmo_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
3324 #define mmo_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
3325 #define mmo_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
3326 #define mmo_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
3327 #define mmo_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
3328 #define mmo_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
3330 const bfd_target mmix_mmo_vec =
3333 bfd_target_mmo_flavour,
3334 BFD_ENDIAN_BIG, /* target byte order */
3335 BFD_ENDIAN_BIG, /* target headers byte order */
3337 /* FIXME: Might need adjustments. */
3338 (HAS_RELOC | EXEC_P | /* object flags */
3339 HAS_LINENO | HAS_DEBUG |
3340 HAS_SYMS | HAS_LOCALS | WP_TEXT),
3342 /* FIXME: Might need adjustments. */
3343 (SEC_CODE | SEC_DATA | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
3344 | SEC_READONLY | SEC_EXCLUDE | SEC_DEBUGGING | SEC_IN_MEMORY),
3346 0, /* leading underscore */
3347 ' ', /* ar_pad_char */
3348 16, /* ar_max_namelen */
3349 0, /* match priority. */
3350 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
3351 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
3352 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
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, /* hdrs */
3359 mmo_object_p, /* bfd_check_format */
3364 _bfd_bool_bfd_false_error,
3366 _bfd_bool_bfd_false_error,
3367 _bfd_bool_bfd_false_error,
3369 { /* bfd_write_contents */
3370 _bfd_bool_bfd_false_error,
3371 mmo_write_object_contents,
3372 _bfd_bool_bfd_false_error,
3373 _bfd_bool_bfd_false_error,
3376 BFD_JUMP_TABLE_GENERIC (mmo),
3377 BFD_JUMP_TABLE_COPY (mmo),
3378 BFD_JUMP_TABLE_CORE (_bfd_nocore),
3379 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
3380 BFD_JUMP_TABLE_SYMBOLS (mmo),
3381 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
3382 BFD_JUMP_TABLE_WRITE (mmo),
3383 BFD_JUMP_TABLE_LINK (mmo),
3384 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),