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eabb7154df
The compiler describes the name and type of all file-scope variables in
this section. Merging it at link time requires using the type mapping
added in the previous commit to determine the appropriate type for the
variable in the output, given its type in the input: we check the shared
container first, and if the type doesn't exist there, it must be a
conflicted type in the per-CU child, and the variable should go there
too. We also put the variable in the per-CU child if a variable with
the same name but a different type already exists in the parent: we
ignore any such conflict in the child because CTF cannot represent such
things, nor can they happen unless a third-party linking program has
overridden the mapping of CU to CTF archive member name (using machinery
added in a later commit).
v3: rewritten using an algorithm that actually works in the case of
conflicting names. Some code motion from the next commit. Set
the per-CU parent name.
v4: check for strdup failure.
v5: fix tabdamage.
include/
* ctf-api.h (ECTF_INTERNAL): New.
libctf/
* ctf-link.c (ctf_create_per_cu): New, refactored out of...
(ctf_link_one_type): ... here, with parent-name setting added.
(check_variable): New.
(ctf_link_one_variable): Likewise.
(ctf_link_one_input_archive_member): Call it.
* ctf-error.c (_ctf_errlist): Updated with new errors.
96 lines
4.4 KiB
C
96 lines
4.4 KiB
C
/* Error table.
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Copyright (C) 2019 Free Software Foundation, Inc.
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This file is part of libctf.
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libctf is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not see
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<http://www.gnu.org/licenses/>. */
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#include <ctf-impl.h>
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static const char *const _ctf_errlist[] = {
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"File is not in CTF or ELF format", /* ECTF_FMT */
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"BFD error", /* ECTF_BFDERR */
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"File uses more recent CTF version than libctf", /* ECTF_CTFVERS */
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"Ambiguous BFD target", /* ECTF_BFD_AMBIGUOUS */
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"Symbol table uses invalid entry size", /* ECTF_SYMTAB */
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"Symbol table data buffer is not valid", /* ECTF_SYMBAD */
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"String table data buffer is not valid", /* ECTF_STRBAD */
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"File data structure corruption detected", /* ECTF_CORRUPT */
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"File does not contain CTF data", /* ECTF_NOCTFDATA */
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"Buffer does not contain CTF data", /* ECTF_NOCTFBUF */
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"Symbol table information is not available", /* ECTF_NOSYMTAB */
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"Type information is in parent and unavailable", /* ECTF_NOPARENT */
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"Cannot import types with different data model", /* ECTF_DMODEL */
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"File added to link too late", /* ECTF_LINKADDEDLATE */
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"Failed to allocate (de)compression buffer", /* ECTF_ZALLOC */
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"Failed to decompress CTF data", /* ECTF_DECOMPRESS */
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"External string table is not available", /* ECTF_STRTAB */
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"String name offset is corrupt", /* ECTF_BADNAME */
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"Invalid type identifier", /* ECTF_BADID */
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"Type is not a struct or union", /* ECTF_NOTSOU */
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"Type is not an enum", /* ECTF_NOTENUM */
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"Type is not a struct, union, or enum", /* ECTF_NOTSUE */
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"Type is not an integer, float, or enum", /* ECTF_NOTINTFP */
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"Type is not an array", /* ECTF_NOTARRAY */
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"Type does not reference another type", /* ECTF_NOTREF */
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"Input buffer is too small for type name", /* ECTF_NAMELEN */
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"No type information available for that name", /* ECTF_NOTYPE */
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"Syntax error in type name", /* ECTF_SYNTAX */
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"Symbol table entry or type is not a function", /* ECTF_NOTFUNC */
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"No function information available for symbol", /* ECTF_NOFUNCDAT */
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"Symbol table entry is not a data object", /* ECTF_NOTDATA */
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"No type information available for symbol", /* ECTF_NOTYPEDAT */
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"No label information available for that name", /* ECTF_NOLABEL */
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"File does not contain any labels", /* ECTF_NOLABELDATA */
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"Feature not supported", /* ECTF_NOTSUP */
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"Invalid enum element name", /* ECTF_NOENUMNAM */
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"Invalid member name", /* ECTF_NOMEMBNAM */
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"CTF container is read-only", /* ECTF_RDONLY */
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"Limit on number of dynamic type members reached", /* ECTF_DTFULL */
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"Limit on number of dynamic types reached", /* ECTF_FULL */
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"Duplicate member or variable name", /* ECTF_DUPLICATE */
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"Conflicting type is already defined", /* ECTF_CONFLICT */
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"Attempt to roll back past a ctf_update", /* ECTF_OVERROLLBACK */
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"Failed to compress CTF data", /* ECTF_COMPRESS */
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"Failed to create CTF archive", /* ECTF_ARCREATE */
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"Name not found in CTF archive", /* ECTF_ARNNAME */
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"Overflow of type bitness or offset in slice", /* ECTF_SLICEOVERFLOW */
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"Unknown section number in dump", /* ECTF_DUMPSECTUNKNOWN */
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"Section changed in middle of dump", /* ECTF_DUMPSECTCHANGED */
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"Feature not yet implemented", /* ECTF_NOTYET */
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"Internal error in link" /* ECTF_INTERNAL */
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};
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static const int _ctf_nerr = sizeof (_ctf_errlist) / sizeof (_ctf_errlist[0]);
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const char *
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ctf_errmsg (int error)
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{
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const char *str;
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if (error >= ECTF_BASE && (error - ECTF_BASE) < _ctf_nerr)
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str = _ctf_errlist[error - ECTF_BASE];
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else
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str = ctf_strerror (error);
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return (str ? str : "Unknown error");
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}
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int
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ctf_errno (ctf_file_t * fp)
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{
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return fp->ctf_errno;
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}
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