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192786c72a
While debugging another patch series, I wanted to dump an addrmap. I came up with this patch, which generalizes the addrmap-dumping code from psymtab.c and moves it to addrmap.c. psymtab.c is changed to use the new code.
1905 lines
54 KiB
C
1905 lines
54 KiB
C
/* Partial symbol tables.
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Copyright (C) 2009-2021 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "objfiles.h"
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#include "psympriv.h"
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#include "block.h"
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#include "filenames.h"
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#include "source.h"
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#include "addrmap.h"
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#include "gdbtypes.h"
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#include "ui-out.h"
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#include "command.h"
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#include "readline/tilde.h"
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#include "gdb_regex.h"
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#include "dictionary.h"
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#include "language.h"
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#include "cp-support.h"
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#include "gdbcmd.h"
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#include <algorithm>
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#include <set>
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static struct partial_symbol *lookup_partial_symbol (struct objfile *,
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struct partial_symtab *,
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const lookup_name_info &,
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int,
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domain_enum);
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static const char *psymtab_to_fullname (struct partial_symtab *ps);
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static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
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struct partial_symtab *,
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CORE_ADDR,
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struct obj_section *);
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static struct compunit_symtab *psymtab_to_symtab (struct objfile *objfile,
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struct partial_symtab *pst);
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psymtab_storage::~psymtab_storage ()
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{
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partial_symtab *iter = psymtabs;
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while (iter != nullptr)
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{
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partial_symtab *next = iter->next;
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delete iter;
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iter = next;
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}
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}
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/* See psymtab.h. */
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void
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psymtab_storage::install_psymtab (partial_symtab *pst)
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{
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pst->next = psymtabs;
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psymtabs = pst;
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}
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/* Ensure that the partial symbols for OBJFILE have been loaded. This
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will print a message when symbols are loaded. This function
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returns a range adapter suitable for iterating over the psymtabs of
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OBJFILE. */
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psymtab_storage::partial_symtab_range
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psymbol_functions::require_partial_symbols (struct objfile *objfile)
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{
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objfile->require_partial_symbols (true);
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return m_partial_symtabs->range ();
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}
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/* Find which partial symtab contains PC and SECTION starting at psymtab PST.
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We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
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static struct partial_symtab *
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find_pc_sect_psymtab_closer (struct objfile *objfile,
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CORE_ADDR pc, struct obj_section *section,
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struct partial_symtab *pst,
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struct bound_minimal_symbol msymbol)
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{
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struct partial_symtab *tpst;
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struct partial_symtab *best_pst = pst;
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CORE_ADDR best_addr = pst->text_low (objfile);
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gdb_assert (!pst->psymtabs_addrmap_supported);
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/* An objfile that has its functions reordered might have
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many partial symbol tables containing the PC, but
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we want the partial symbol table that contains the
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function containing the PC. */
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if (!(objfile->flags & OBJF_REORDERED)
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&& section == NULL) /* Can't validate section this way. */
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return pst;
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if (msymbol.minsym == NULL)
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return pst;
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/* The code range of partial symtabs sometimes overlap, so, in
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the loop below, we need to check all partial symtabs and
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find the one that fits better for the given PC address. We
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select the partial symtab that contains a symbol whose
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address is closest to the PC address. By closest we mean
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that find_pc_sect_symbol returns the symbol with address
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that is closest and still less than the given PC. */
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for (tpst = pst; tpst != NULL; tpst = tpst->next)
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{
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if (pc >= tpst->text_low (objfile) && pc < tpst->text_high (objfile))
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{
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struct partial_symbol *p;
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CORE_ADDR this_addr;
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/* NOTE: This assumes that every psymbol has a
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corresponding msymbol, which is not necessarily
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true; the debug info might be much richer than the
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object's symbol table. */
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p = find_pc_sect_psymbol (objfile, tpst, pc, section);
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if (p != NULL
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&& (p->address (objfile) == BMSYMBOL_VALUE_ADDRESS (msymbol)))
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return tpst;
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/* Also accept the textlow value of a psymtab as a
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"symbol", to provide some support for partial
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symbol tables with line information but no debug
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symbols (e.g. those produced by an assembler). */
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if (p != NULL)
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this_addr = p->address (objfile);
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else
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this_addr = tpst->text_low (objfile);
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/* Check whether it is closer than our current
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BEST_ADDR. Since this symbol address is
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necessarily lower or equal to PC, the symbol closer
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to PC is the symbol which address is the highest.
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This way we return the psymtab which contains such
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best match symbol. This can help in cases where the
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symbol information/debuginfo is not complete, like
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for instance on IRIX6 with gcc, where no debug info
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is emitted for statics. (See also the nodebug.exp
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testcase.) */
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if (this_addr > best_addr)
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{
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best_addr = this_addr;
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best_pst = tpst;
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}
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}
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}
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return best_pst;
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}
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/* See psympriv.h. */
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struct partial_symtab *
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psymbol_functions::find_pc_sect_psymtab (struct objfile *objfile,
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CORE_ADDR pc,
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struct obj_section *section,
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struct bound_minimal_symbol msymbol)
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{
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/* Try just the PSYMTABS_ADDRMAP mapping first as it has better
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granularity than the later used TEXTLOW/TEXTHIGH one. However, we need
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to take care as the PSYMTABS_ADDRMAP can hold things other than partial
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symtabs in some cases.
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This function should only be called for objfiles that are using partial
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symtabs, not for objfiles that are using indexes (.gdb_index or
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.debug_names), however 'maintenance print psymbols' calls this function
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directly for all objfiles. If we assume that PSYMTABS_ADDRMAP contains
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partial symtabs then we will end up returning a pointer to an object
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that is not a partial_symtab, which doesn't end well. */
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if (m_partial_symtabs->psymtabs != NULL
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&& m_partial_symtabs->psymtabs_addrmap != NULL)
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{
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CORE_ADDR baseaddr = objfile->text_section_offset ();
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struct partial_symtab *pst
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= ((struct partial_symtab *)
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addrmap_find (m_partial_symtabs->psymtabs_addrmap,
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pc - baseaddr));
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if (pst != NULL)
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{
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/* FIXME: addrmaps currently do not handle overlayed sections,
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so fall back to the non-addrmap case if we're debugging
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overlays and the addrmap returned the wrong section. */
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if (overlay_debugging && msymbol.minsym != NULL && section != NULL)
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{
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struct partial_symbol *p;
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/* NOTE: This assumes that every psymbol has a
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corresponding msymbol, which is not necessarily
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true; the debug info might be much richer than the
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object's symbol table. */
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p = find_pc_sect_psymbol (objfile, pst, pc, section);
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if (p == NULL
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|| (p->address (objfile)
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!= BMSYMBOL_VALUE_ADDRESS (msymbol)))
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goto next;
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}
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/* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
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PSYMTABS_ADDRMAP we used has already the best 1-byte
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granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
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a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
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overlap. */
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return pst;
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}
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}
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next:
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/* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
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which still have no corresponding full SYMTABs read. But it is not
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present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
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so far. */
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/* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
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its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
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debug info type in single OBJFILE. */
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for (partial_symtab *pst : require_partial_symbols (objfile))
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if (!pst->psymtabs_addrmap_supported
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&& pc >= pst->text_low (objfile) && pc < pst->text_high (objfile))
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{
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struct partial_symtab *best_pst;
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best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
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msymbol);
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if (best_pst != NULL)
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return best_pst;
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}
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return NULL;
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}
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/* Psymtab version of find_pc_sect_compunit_symtab. See its definition in
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the definition of quick_symbol_functions in symfile.h. */
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struct compunit_symtab *
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psymbol_functions::find_pc_sect_compunit_symtab
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(struct objfile *objfile,
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struct bound_minimal_symbol msymbol,
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CORE_ADDR pc,
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struct obj_section *section,
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int warn_if_readin)
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{
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struct partial_symtab *ps = find_pc_sect_psymtab (objfile,
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pc, section,
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msymbol);
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if (ps != NULL)
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{
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if (warn_if_readin && ps->readin_p (objfile))
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/* Might want to error() here (in case symtab is corrupt and
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will cause a core dump), but maybe we can successfully
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continue, so let's not. */
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warning (_("\
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(Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
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paddress (objfile->arch (), pc));
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psymtab_to_symtab (objfile, ps);
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return ps->get_compunit_symtab (objfile);
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}
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return NULL;
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}
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/* Find which partial symbol within a psymtab matches PC and SECTION.
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Return NULL if none. */
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static struct partial_symbol *
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find_pc_sect_psymbol (struct objfile *objfile,
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struct partial_symtab *psymtab, CORE_ADDR pc,
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struct obj_section *section)
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{
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struct partial_symbol *best = NULL;
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CORE_ADDR best_pc;
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const CORE_ADDR textlow = psymtab->text_low (objfile);
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gdb_assert (psymtab != NULL);
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/* Cope with programs that start at address 0. */
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best_pc = (textlow != 0) ? textlow - 1 : 0;
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/* Search the global symbols as well as the static symbols, so that
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find_pc_partial_function doesn't use a minimal symbol and thus
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cache a bad endaddr. */
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for (partial_symbol *p : psymtab->global_psymbols)
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{
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if (p->domain == VAR_DOMAIN
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&& p->aclass == LOC_BLOCK
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&& pc >= p->address (objfile)
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&& (p->address (objfile) > best_pc
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|| (psymtab->text_low (objfile) == 0
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&& best_pc == 0 && p->address (objfile) == 0)))
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{
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if (section != NULL) /* Match on a specific section. */
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{
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if (!matching_obj_sections (p->obj_section (objfile),
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section))
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continue;
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}
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best_pc = p->address (objfile);
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best = p;
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}
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}
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for (partial_symbol *p : psymtab->static_psymbols)
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{
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if (p->domain == VAR_DOMAIN
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&& p->aclass == LOC_BLOCK
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&& pc >= p->address (objfile)
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&& (p->address (objfile) > best_pc
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|| (psymtab->text_low (objfile) == 0
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&& best_pc == 0 && p->address (objfile) == 0)))
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{
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if (section != NULL) /* Match on a specific section. */
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{
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if (!matching_obj_sections (p->obj_section (objfile),
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section))
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continue;
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}
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best_pc = p->address (objfile);
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best = p;
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}
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}
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return best;
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}
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/* Psymtab version of lookup_global_symbol_language. See its definition in
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the definition of quick_symbol_functions in symfile.h. */
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enum language
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psymbol_functions::lookup_global_symbol_language (struct objfile *objfile,
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const char *name,
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domain_enum domain,
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bool *symbol_found_p)
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{
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*symbol_found_p = false;
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if (objfile->sf == NULL)
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return language_unknown;
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lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
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for (partial_symtab *ps : require_partial_symbols (objfile))
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{
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struct partial_symbol *psym;
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if (ps->readin_p (objfile))
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continue;
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psym = lookup_partial_symbol (objfile, ps, lookup_name, 1, domain);
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if (psym)
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{
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*symbol_found_p = true;
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return psym->ginfo.language ();
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}
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}
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return language_unknown;
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}
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/* Returns true if PSYM matches LOOKUP_NAME. */
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static bool
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psymbol_name_matches (partial_symbol *psym,
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const lookup_name_info &lookup_name)
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{
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const language_defn *lang = language_def (psym->ginfo.language ());
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symbol_name_matcher_ftype *name_match
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= lang->get_symbol_name_matcher (lookup_name);
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return name_match (psym->ginfo.search_name (), lookup_name, NULL);
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}
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/* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
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the global block of PST if GLOBAL, and otherwise the static block.
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MATCH is the comparison operation that returns true iff MATCH (s,
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NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
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non-null, the symbols in the block are assumed to be ordered
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according to it (allowing binary search). It must be compatible
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with MATCH. Returns the symbol, if found, and otherwise NULL. */
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static struct partial_symbol *
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match_partial_symbol (struct objfile *objfile,
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struct partial_symtab *pst, int global,
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const lookup_name_info &name, domain_enum domain,
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symbol_compare_ftype *ordered_compare)
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{
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struct partial_symbol **start, **psym;
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struct partial_symbol **top, **real_top, **bottom, **center;
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int length = (global
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? pst->global_psymbols.size ()
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: pst->static_psymbols.size ());
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int do_linear_search = 1;
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if (length == 0)
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return NULL;
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start = (global ?
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&pst->global_psymbols[0] :
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&pst->static_psymbols[0]);
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if (global && ordered_compare) /* Can use a binary search. */
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{
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do_linear_search = 0;
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/* Binary search. This search is guaranteed to end with center
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pointing at the earliest partial symbol whose name might be
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correct. At that point *all* partial symbols with an
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appropriate name will be checked against the correct
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domain. */
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bottom = start;
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top = start + length - 1;
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real_top = top;
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while (top > bottom)
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{
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center = bottom + (top - bottom) / 2;
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gdb_assert (center < top);
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enum language lang = (*center)->ginfo.language ();
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const char *lang_ln = name.language_lookup_name (lang);
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if (ordered_compare ((*center)->ginfo.search_name (),
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lang_ln) >= 0)
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top = center;
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else
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bottom = center + 1;
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}
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gdb_assert (top == bottom);
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while (top <= real_top
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&& psymbol_name_matches (*top, name))
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{
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if (symbol_matches_domain ((*top)->ginfo.language (),
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(*top)->domain, domain))
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return *top;
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top++;
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}
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}
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/* Can't use a binary search or else we found during the binary search that
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we should also do a linear search. */
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if (do_linear_search)
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{
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for (psym = start; psym < start + length; psym++)
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{
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if (symbol_matches_domain ((*psym)->ginfo.language (),
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(*psym)->domain, domain)
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&& psymbol_name_matches (*psym, name))
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return *psym;
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}
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}
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return NULL;
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}
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|
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/* Look, in partial_symtab PST, for symbol whose natural name is
|
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LOOKUP_NAME. Check the global symbols if GLOBAL, the static
|
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symbols if not. */
|
||
|
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static struct partial_symbol *
|
||
lookup_partial_symbol (struct objfile *objfile,
|
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struct partial_symtab *pst,
|
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const lookup_name_info &lookup_name,
|
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int global, domain_enum domain)
|
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{
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struct partial_symbol **start, **psym;
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struct partial_symbol **top, **real_top, **bottom, **center;
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int length = (global
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? pst->global_psymbols.size ()
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: pst->static_psymbols.size ());
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int do_linear_search = 1;
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|
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if (length == 0)
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return NULL;
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start = (global ?
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&pst->global_psymbols[0] :
|
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&pst->static_psymbols[0]);
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|
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if (global) /* This means we can use a binary search. */
|
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{
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do_linear_search = 0;
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|
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/* Binary search. This search is guaranteed to end with center
|
||
pointing at the earliest partial symbol whose name might be
|
||
correct. At that point *all* partial symbols with an
|
||
appropriate name will be checked against the correct
|
||
domain. */
|
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|
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bottom = start;
|
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top = start + length - 1;
|
||
real_top = top;
|
||
while (top > bottom)
|
||
{
|
||
center = bottom + (top - bottom) / 2;
|
||
|
||
gdb_assert (center < top);
|
||
|
||
if (strcmp_iw_ordered ((*center)->ginfo.search_name (),
|
||
lookup_name.c_str ()) >= 0)
|
||
{
|
||
top = center;
|
||
}
|
||
else
|
||
{
|
||
bottom = center + 1;
|
||
}
|
||
}
|
||
|
||
gdb_assert (top == bottom);
|
||
|
||
/* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
|
||
search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */
|
||
while (top >= start && symbol_matches_search_name (&(*top)->ginfo,
|
||
lookup_name))
|
||
top--;
|
||
|
||
/* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */
|
||
top++;
|
||
|
||
while (top <= real_top && symbol_matches_search_name (&(*top)->ginfo,
|
||
lookup_name))
|
||
{
|
||
if (symbol_matches_domain ((*top)->ginfo.language (),
|
||
(*top)->domain, domain))
|
||
return *top;
|
||
top++;
|
||
}
|
||
}
|
||
|
||
/* Can't use a binary search or else we found during the binary search that
|
||
we should also do a linear search. */
|
||
|
||
if (do_linear_search)
|
||
{
|
||
for (psym = start; psym < start + length; psym++)
|
||
{
|
||
if (symbol_matches_domain ((*psym)->ginfo.language (),
|
||
(*psym)->domain, domain)
|
||
&& symbol_matches_search_name (&(*psym)->ginfo, lookup_name))
|
||
return *psym;
|
||
}
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Get the symbol table that corresponds to a partial_symtab.
|
||
This is fast after the first time you do it.
|
||
The result will be NULL if the primary symtab has no symbols,
|
||
which can happen. Otherwise the result is the primary symtab
|
||
that contains PST. */
|
||
|
||
static struct compunit_symtab *
|
||
psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
|
||
{
|
||
/* If it is a shared psymtab, find an unshared psymtab that includes
|
||
it. Any such psymtab will do. */
|
||
while (pst->user != NULL)
|
||
pst = pst->user;
|
||
|
||
/* If it's been looked up before, return it. */
|
||
if (pst->get_compunit_symtab (objfile))
|
||
return pst->get_compunit_symtab (objfile);
|
||
|
||
/* If it has not yet been read in, read it. */
|
||
if (!pst->readin_p (objfile))
|
||
{
|
||
scoped_restore decrementer = increment_reading_symtab ();
|
||
|
||
if (info_verbose)
|
||
{
|
||
printf_filtered (_("Reading in symbols for %s...\n"),
|
||
pst->filename);
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
pst->read_symtab (objfile);
|
||
}
|
||
|
||
return pst->get_compunit_symtab (objfile);
|
||
}
|
||
|
||
/* Psymtab version of find_last_source_symtab. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
struct symtab *
|
||
psymbol_functions::find_last_source_symtab (struct objfile *ofp)
|
||
{
|
||
struct partial_symtab *cs_pst = NULL;
|
||
|
||
for (partial_symtab *ps : require_partial_symbols (ofp))
|
||
{
|
||
const char *name = ps->filename;
|
||
int len = strlen (name);
|
||
|
||
if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
|
||
|| strcmp (name, "<<C++-namespaces>>") == 0)))
|
||
cs_pst = ps;
|
||
}
|
||
|
||
if (cs_pst)
|
||
{
|
||
if (cs_pst->readin_p (ofp))
|
||
{
|
||
internal_error (__FILE__, __LINE__,
|
||
_("select_source_symtab: "
|
||
"readin pst found and no symtabs."));
|
||
}
|
||
else
|
||
{
|
||
struct compunit_symtab *cust = psymtab_to_symtab (ofp, cs_pst);
|
||
|
||
if (cust == NULL)
|
||
return NULL;
|
||
return compunit_primary_filetab (cust);
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* Psymtab version of forget_cached_source_info. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
void
|
||
psymbol_functions::forget_cached_source_info (struct objfile *objfile)
|
||
{
|
||
for (partial_symtab *pst : require_partial_symbols (objfile))
|
||
{
|
||
if (pst->fullname != NULL)
|
||
{
|
||
xfree (pst->fullname);
|
||
pst->fullname = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
print_partial_symbols (struct gdbarch *gdbarch, struct objfile *objfile,
|
||
const std::vector<partial_symbol *> &symbols,
|
||
const char *what, struct ui_file *outfile)
|
||
{
|
||
fprintf_filtered (outfile, " %s partial symbols:\n", what);
|
||
for (partial_symbol *p : symbols)
|
||
{
|
||
QUIT;
|
||
fprintf_filtered (outfile, " `%s'", p->ginfo.linkage_name ());
|
||
if (p->ginfo.demangled_name () != NULL)
|
||
{
|
||
fprintf_filtered (outfile, " `%s'",
|
||
p->ginfo.demangled_name ());
|
||
}
|
||
fputs_filtered (", ", outfile);
|
||
switch (p->domain)
|
||
{
|
||
case UNDEF_DOMAIN:
|
||
fputs_filtered ("undefined domain, ", outfile);
|
||
break;
|
||
case VAR_DOMAIN:
|
||
/* This is the usual thing -- don't print it. */
|
||
break;
|
||
case STRUCT_DOMAIN:
|
||
fputs_filtered ("struct domain, ", outfile);
|
||
break;
|
||
case MODULE_DOMAIN:
|
||
fputs_filtered ("module domain, ", outfile);
|
||
break;
|
||
case LABEL_DOMAIN:
|
||
fputs_filtered ("label domain, ", outfile);
|
||
break;
|
||
case COMMON_BLOCK_DOMAIN:
|
||
fputs_filtered ("common block domain, ", outfile);
|
||
break;
|
||
default:
|
||
fputs_filtered ("<invalid domain>, ", outfile);
|
||
break;
|
||
}
|
||
switch (p->aclass)
|
||
{
|
||
case LOC_UNDEF:
|
||
fputs_filtered ("undefined", outfile);
|
||
break;
|
||
case LOC_CONST:
|
||
fputs_filtered ("constant int", outfile);
|
||
break;
|
||
case LOC_STATIC:
|
||
fputs_filtered ("static", outfile);
|
||
break;
|
||
case LOC_REGISTER:
|
||
fputs_filtered ("register", outfile);
|
||
break;
|
||
case LOC_ARG:
|
||
fputs_filtered ("pass by value", outfile);
|
||
break;
|
||
case LOC_REF_ARG:
|
||
fputs_filtered ("pass by reference", outfile);
|
||
break;
|
||
case LOC_REGPARM_ADDR:
|
||
fputs_filtered ("register address parameter", outfile);
|
||
break;
|
||
case LOC_LOCAL:
|
||
fputs_filtered ("stack parameter", outfile);
|
||
break;
|
||
case LOC_TYPEDEF:
|
||
fputs_filtered ("type", outfile);
|
||
break;
|
||
case LOC_LABEL:
|
||
fputs_filtered ("label", outfile);
|
||
break;
|
||
case LOC_BLOCK:
|
||
fputs_filtered ("function", outfile);
|
||
break;
|
||
case LOC_CONST_BYTES:
|
||
fputs_filtered ("constant bytes", outfile);
|
||
break;
|
||
case LOC_UNRESOLVED:
|
||
fputs_filtered ("unresolved", outfile);
|
||
break;
|
||
case LOC_OPTIMIZED_OUT:
|
||
fputs_filtered ("optimized out", outfile);
|
||
break;
|
||
case LOC_COMPUTED:
|
||
fputs_filtered ("computed at runtime", outfile);
|
||
break;
|
||
default:
|
||
fputs_filtered ("<invalid location>", outfile);
|
||
break;
|
||
}
|
||
fputs_filtered (", ", outfile);
|
||
fputs_filtered (paddress (gdbarch, p->unrelocated_address ()), outfile);
|
||
fprintf_filtered (outfile, "\n");
|
||
}
|
||
}
|
||
|
||
static void
|
||
dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
|
||
struct ui_file *outfile)
|
||
{
|
||
struct gdbarch *gdbarch = objfile->arch ();
|
||
int i;
|
||
|
||
if (psymtab->anonymous)
|
||
{
|
||
fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ",
|
||
psymtab->filename);
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
|
||
psymtab->filename);
|
||
}
|
||
fprintf_filtered (outfile, "(object ");
|
||
gdb_print_host_address (psymtab, outfile);
|
||
fprintf_filtered (outfile, ")\n\n");
|
||
fprintf_filtered (outfile, " Read from object file %s (",
|
||
objfile_name (objfile));
|
||
gdb_print_host_address (objfile, outfile);
|
||
fprintf_filtered (outfile, ")\n");
|
||
|
||
if (psymtab->readin_p (objfile))
|
||
{
|
||
fprintf_filtered (outfile,
|
||
" Full symtab was read (at ");
|
||
gdb_print_host_address (psymtab->get_compunit_symtab (objfile), outfile);
|
||
fprintf_filtered (outfile, ")\n");
|
||
}
|
||
|
||
fprintf_filtered (outfile, " Symbols cover text addresses ");
|
||
fputs_filtered (paddress (gdbarch, psymtab->text_low (objfile)), outfile);
|
||
fprintf_filtered (outfile, "-");
|
||
fputs_filtered (paddress (gdbarch, psymtab->text_high (objfile)), outfile);
|
||
fprintf_filtered (outfile, "\n");
|
||
fprintf_filtered (outfile, " Address map supported - %s.\n",
|
||
psymtab->psymtabs_addrmap_supported ? "yes" : "no");
|
||
fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
|
||
psymtab->number_of_dependencies);
|
||
for (i = 0; i < psymtab->number_of_dependencies; i++)
|
||
{
|
||
fprintf_filtered (outfile, " %d ", i);
|
||
gdb_print_host_address (psymtab->dependencies[i], outfile);
|
||
fprintf_filtered (outfile, " %s\n",
|
||
psymtab->dependencies[i]->filename);
|
||
}
|
||
if (psymtab->user != NULL)
|
||
{
|
||
fprintf_filtered (outfile, " Shared partial symtab with user ");
|
||
gdb_print_host_address (psymtab->user, outfile);
|
||
fprintf_filtered (outfile, "\n");
|
||
}
|
||
if (!psymtab->global_psymbols.empty ())
|
||
{
|
||
print_partial_symbols
|
||
(gdbarch, objfile, psymtab->global_psymbols,
|
||
"Global", outfile);
|
||
}
|
||
if (!psymtab->static_psymbols.empty ())
|
||
{
|
||
print_partial_symbols
|
||
(gdbarch, objfile, psymtab->static_psymbols,
|
||
"Static", outfile);
|
||
}
|
||
fprintf_filtered (outfile, "\n");
|
||
}
|
||
|
||
/* Count the number of partial symbols in OBJFILE. */
|
||
|
||
int
|
||
psymbol_functions::count_psyms ()
|
||
{
|
||
int count = 0;
|
||
for (partial_symtab *pst : m_partial_symtabs->range ())
|
||
{
|
||
count += pst->global_psymbols.size ();
|
||
count += pst->static_psymbols.size ();
|
||
}
|
||
return count;
|
||
}
|
||
|
||
/* Psymtab version of print_stats. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
void
|
||
psymbol_functions::print_stats (struct objfile *objfile, bool print_bcache)
|
||
{
|
||
int i;
|
||
|
||
if (!print_bcache)
|
||
{
|
||
int n_psyms = count_psyms ();
|
||
if (n_psyms > 0)
|
||
printf_filtered (_(" Number of \"partial\" symbols read: %d\n"),
|
||
n_psyms);
|
||
|
||
i = 0;
|
||
for (partial_symtab *ps : require_partial_symbols (objfile))
|
||
{
|
||
if (!ps->readin_p (objfile))
|
||
i++;
|
||
}
|
||
printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"),
|
||
i);
|
||
printf_filtered (_(" Total memory used for psymbol cache: %d\n"),
|
||
m_partial_symtabs->psymbol_cache.memory_used ());
|
||
}
|
||
else
|
||
{
|
||
printf_filtered (_("Psymbol byte cache statistics:\n"));
|
||
m_partial_symtabs->psymbol_cache.print_statistics
|
||
("partial symbol cache");
|
||
}
|
||
}
|
||
|
||
/* Psymtab version of dump. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
void
|
||
psymbol_functions::dump (struct objfile *objfile)
|
||
{
|
||
struct partial_symtab *psymtab;
|
||
|
||
if (m_partial_symtabs->psymtabs)
|
||
{
|
||
printf_filtered ("Psymtabs:\n");
|
||
for (psymtab = m_partial_symtabs->psymtabs;
|
||
psymtab != NULL;
|
||
psymtab = psymtab->next)
|
||
{
|
||
printf_filtered ("%s at ",
|
||
psymtab->filename);
|
||
gdb_print_host_address (psymtab, gdb_stdout);
|
||
printf_filtered ("\n");
|
||
}
|
||
printf_filtered ("\n\n");
|
||
}
|
||
}
|
||
|
||
/* Psymtab version of expand_all_symtabs. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
void
|
||
psymbol_functions::expand_all_symtabs (struct objfile *objfile)
|
||
{
|
||
for (partial_symtab *psymtab : require_partial_symbols (objfile))
|
||
psymtab_to_symtab (objfile, psymtab);
|
||
}
|
||
|
||
/* Psymtab version of map_symbol_filenames. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
void
|
||
psymbol_functions::map_symbol_filenames
|
||
(struct objfile *objfile,
|
||
gdb::function_view<symbol_filename_ftype> fun,
|
||
bool need_fullname)
|
||
{
|
||
for (partial_symtab *ps : require_partial_symbols (objfile))
|
||
{
|
||
const char *fullname;
|
||
|
||
if (ps->readin_p (objfile))
|
||
continue;
|
||
|
||
/* We can skip shared psymtabs here, because any file name will be
|
||
attached to the unshared psymtab. */
|
||
if (ps->user != NULL)
|
||
continue;
|
||
|
||
/* Anonymous psymtabs don't have a file name. */
|
||
if (ps->anonymous)
|
||
continue;
|
||
|
||
QUIT;
|
||
if (need_fullname)
|
||
fullname = psymtab_to_fullname (ps);
|
||
else
|
||
fullname = NULL;
|
||
fun (ps->filename, fullname);
|
||
}
|
||
}
|
||
|
||
/* Finds the fullname that a partial_symtab represents.
|
||
|
||
If this functions finds the fullname, it will save it in ps->fullname
|
||
and it will also return the value.
|
||
|
||
If this function fails to find the file that this partial_symtab represents,
|
||
NULL will be returned and ps->fullname will be set to NULL. */
|
||
|
||
static const char *
|
||
psymtab_to_fullname (struct partial_symtab *ps)
|
||
{
|
||
gdb_assert (!ps->anonymous);
|
||
|
||
/* Use cached copy if we have it.
|
||
We rely on forget_cached_source_info being called appropriately
|
||
to handle cases like the file being moved. */
|
||
if (ps->fullname == NULL)
|
||
{
|
||
gdb::unique_xmalloc_ptr<char> fullname
|
||
= find_source_or_rewrite (ps->filename, ps->dirname);
|
||
ps->fullname = fullname.release ();
|
||
}
|
||
|
||
return ps->fullname;
|
||
}
|
||
|
||
/* Psymtab version of expand_matching_symbols. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
void
|
||
psymbol_functions::expand_matching_symbols
|
||
(struct objfile *objfile,
|
||
const lookup_name_info &name, domain_enum domain,
|
||
int global,
|
||
symbol_compare_ftype *ordered_compare)
|
||
{
|
||
for (partial_symtab *ps : require_partial_symbols (objfile))
|
||
{
|
||
QUIT;
|
||
if (!ps->readin_p (objfile)
|
||
&& match_partial_symbol (objfile, ps, global, name, domain,
|
||
ordered_compare))
|
||
psymtab_to_symtab (objfile, ps);
|
||
}
|
||
}
|
||
|
||
/* A helper for psym_expand_symtabs_matching that handles searching
|
||
included psymtabs. This returns true if a symbol is found, and
|
||
false otherwise. It also updates the 'searched_flag' on the
|
||
various psymtabs that it searches. */
|
||
|
||
static bool
|
||
recursively_search_psymtabs
|
||
(struct partial_symtab *ps,
|
||
struct objfile *objfile,
|
||
block_search_flags search_flags,
|
||
domain_enum domain,
|
||
enum search_domain search,
|
||
const lookup_name_info &lookup_name,
|
||
gdb::function_view<expand_symtabs_symbol_matcher_ftype> sym_matcher)
|
||
{
|
||
int keep_going = 1;
|
||
enum psymtab_search_status result = PST_SEARCHED_AND_NOT_FOUND;
|
||
int i;
|
||
|
||
if (ps->searched_flag != PST_NOT_SEARCHED)
|
||
return ps->searched_flag == PST_SEARCHED_AND_FOUND;
|
||
|
||
/* Recurse into shared psymtabs first, because they may have already
|
||
been searched, and this could save some time. */
|
||
for (i = 0; i < ps->number_of_dependencies; ++i)
|
||
{
|
||
int r;
|
||
|
||
/* Skip non-shared dependencies, these are handled elsewhere. */
|
||
if (ps->dependencies[i]->user == NULL)
|
||
continue;
|
||
|
||
r = recursively_search_psymtabs (ps->dependencies[i],
|
||
objfile, search_flags, domain, search,
|
||
lookup_name, sym_matcher);
|
||
if (r != 0)
|
||
{
|
||
ps->searched_flag = PST_SEARCHED_AND_FOUND;
|
||
return true;
|
||
}
|
||
}
|
||
|
||
partial_symbol **gbound = (ps->global_psymbols.data ()
|
||
+ ps->global_psymbols.size ());
|
||
partial_symbol **sbound = (ps->static_psymbols.data ()
|
||
+ ps->static_psymbols.size ());
|
||
partial_symbol **bound = gbound;
|
||
|
||
/* Go through all of the symbols stored in a partial
|
||
symtab in one loop. */
|
||
partial_symbol **psym = ps->global_psymbols.data ();
|
||
|
||
if ((search_flags & SEARCH_GLOBAL_BLOCK) == 0)
|
||
{
|
||
if (ps->static_psymbols.empty ())
|
||
keep_going = 0;
|
||
else
|
||
{
|
||
psym = ps->static_psymbols.data ();
|
||
bound = sbound;
|
||
}
|
||
}
|
||
|
||
while (keep_going)
|
||
{
|
||
if (psym >= bound)
|
||
{
|
||
if (bound == gbound && !ps->static_psymbols.empty ()
|
||
&& (search_flags & SEARCH_STATIC_BLOCK) != 0)
|
||
{
|
||
psym = ps->static_psymbols.data ();
|
||
bound = sbound;
|
||
}
|
||
else
|
||
keep_going = 0;
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
QUIT;
|
||
|
||
if ((domain == UNDEF_DOMAIN
|
||
|| symbol_matches_domain ((*psym)->ginfo.language (),
|
||
(*psym)->domain, domain))
|
||
&& (search == ALL_DOMAIN
|
||
|| (search == MODULES_DOMAIN
|
||
&& (*psym)->domain == MODULE_DOMAIN)
|
||
|| (search == VARIABLES_DOMAIN
|
||
&& (*psym)->aclass != LOC_TYPEDEF
|
||
&& (*psym)->aclass != LOC_BLOCK)
|
||
|| (search == FUNCTIONS_DOMAIN
|
||
&& (*psym)->aclass == LOC_BLOCK)
|
||
|| (search == TYPES_DOMAIN
|
||
&& (*psym)->aclass == LOC_TYPEDEF))
|
||
&& psymbol_name_matches (*psym, lookup_name)
|
||
&& (sym_matcher == NULL
|
||
|| sym_matcher ((*psym)->ginfo.search_name ())))
|
||
{
|
||
/* Found a match, so notify our caller. */
|
||
result = PST_SEARCHED_AND_FOUND;
|
||
keep_going = 0;
|
||
}
|
||
}
|
||
psym++;
|
||
}
|
||
|
||
ps->searched_flag = result;
|
||
return result == PST_SEARCHED_AND_FOUND;
|
||
}
|
||
|
||
/* Psymtab version of expand_symtabs_matching. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
bool
|
||
psymbol_functions::expand_symtabs_matching
|
||
(struct objfile *objfile,
|
||
gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
|
||
const lookup_name_info *lookup_name,
|
||
gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
|
||
gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
|
||
block_search_flags search_flags,
|
||
domain_enum domain,
|
||
enum search_domain search)
|
||
{
|
||
/* Clear the search flags. */
|
||
for (partial_symtab *ps : require_partial_symbols (objfile))
|
||
ps->searched_flag = PST_NOT_SEARCHED;
|
||
|
||
gdb::optional<lookup_name_info> psym_lookup_name;
|
||
if (lookup_name != nullptr)
|
||
psym_lookup_name = lookup_name->make_ignore_params ();
|
||
|
||
/* This invariant is documented in quick-functions.h. */
|
||
gdb_assert (lookup_name != nullptr || symbol_matcher == nullptr);
|
||
|
||
for (partial_symtab *ps : m_partial_symtabs->range ())
|
||
{
|
||
QUIT;
|
||
|
||
if (ps->readin_p (objfile))
|
||
continue;
|
||
|
||
if (file_matcher)
|
||
{
|
||
bool match;
|
||
|
||
if (ps->anonymous)
|
||
continue;
|
||
|
||
match = file_matcher (ps->filename, false);
|
||
if (!match)
|
||
{
|
||
/* Before we invoke realpath, which can get expensive when many
|
||
files are involved, do a quick comparison of the basenames. */
|
||
if (basenames_may_differ
|
||
|| file_matcher (lbasename (ps->filename), true))
|
||
match = file_matcher (psymtab_to_fullname (ps), false);
|
||
}
|
||
if (!match)
|
||
continue;
|
||
}
|
||
|
||
if (lookup_name == nullptr
|
||
|| recursively_search_psymtabs (ps, objfile, search_flags,
|
||
domain, search,
|
||
*psym_lookup_name,
|
||
symbol_matcher))
|
||
{
|
||
struct compunit_symtab *symtab =
|
||
psymtab_to_symtab (objfile, ps);
|
||
|
||
if (expansion_notify != NULL)
|
||
if (!expansion_notify (symtab))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Psymtab version of has_symbols. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
bool
|
||
psymbol_functions::has_symbols (struct objfile *objfile)
|
||
{
|
||
return m_partial_symtabs->psymtabs != NULL;
|
||
}
|
||
|
||
/* See quick_symbol_functions::has_unexpanded_symtabs in quick-symbol.h. */
|
||
|
||
bool
|
||
psymbol_functions::has_unexpanded_symtabs (struct objfile *objfile)
|
||
{
|
||
for (partial_symtab *psymtab : require_partial_symbols (objfile))
|
||
{
|
||
/* Is this already expanded? */
|
||
if (psymtab->readin_p (objfile))
|
||
continue;
|
||
|
||
/* It has not yet been expanded. */
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/* Helper function for psym_find_compunit_symtab_by_address that fills
|
||
in m_psymbol_map for a given range of psymbols. */
|
||
|
||
void
|
||
psymbol_functions::fill_psymbol_map
|
||
(struct objfile *objfile,
|
||
struct partial_symtab *psymtab,
|
||
std::set<CORE_ADDR> *seen_addrs,
|
||
const std::vector<partial_symbol *> &symbols)
|
||
{
|
||
for (partial_symbol *psym : symbols)
|
||
{
|
||
if (psym->aclass == LOC_STATIC)
|
||
{
|
||
CORE_ADDR addr = psym->address (objfile);
|
||
if (seen_addrs->find (addr) == seen_addrs->end ())
|
||
{
|
||
seen_addrs->insert (addr);
|
||
m_psymbol_map.emplace_back (addr, psymtab);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* See find_compunit_symtab_by_address in quick_symbol_functions, in
|
||
symfile.h. */
|
||
|
||
compunit_symtab *
|
||
psymbol_functions::find_compunit_symtab_by_address (struct objfile *objfile,
|
||
CORE_ADDR address)
|
||
{
|
||
if (m_psymbol_map.empty ())
|
||
{
|
||
std::set<CORE_ADDR> seen_addrs;
|
||
|
||
for (partial_symtab *pst : require_partial_symbols (objfile))
|
||
{
|
||
fill_psymbol_map (objfile, pst,
|
||
&seen_addrs,
|
||
pst->global_psymbols);
|
||
fill_psymbol_map (objfile, pst,
|
||
&seen_addrs,
|
||
pst->static_psymbols);
|
||
}
|
||
|
||
m_psymbol_map.shrink_to_fit ();
|
||
|
||
std::sort (m_psymbol_map.begin (), m_psymbol_map.end (),
|
||
[] (const std::pair<CORE_ADDR, partial_symtab *> &a,
|
||
const std::pair<CORE_ADDR, partial_symtab *> &b)
|
||
{
|
||
return a.first < b.first;
|
||
});
|
||
}
|
||
|
||
auto iter = std::lower_bound
|
||
(m_psymbol_map.begin (), m_psymbol_map.end (), address,
|
||
[] (const std::pair<CORE_ADDR, partial_symtab *> &a,
|
||
CORE_ADDR b)
|
||
{
|
||
return a.first < b;
|
||
});
|
||
|
||
if (iter == m_psymbol_map.end () || iter->first != address)
|
||
return NULL;
|
||
|
||
return psymtab_to_symtab (objfile, iter->second);
|
||
}
|
||
|
||
|
||
|
||
/* Partially fill a partial symtab. It will be completely filled at
|
||
the end of the symbol list. */
|
||
|
||
partial_symtab::partial_symtab (const char *filename,
|
||
psymtab_storage *partial_symtabs,
|
||
objfile_per_bfd_storage *objfile_per_bfd,
|
||
CORE_ADDR textlow)
|
||
: partial_symtab (filename, partial_symtabs, objfile_per_bfd)
|
||
{
|
||
set_text_low (textlow);
|
||
set_text_high (raw_text_low ()); /* default */
|
||
}
|
||
|
||
/* Perform "finishing up" operations of a partial symtab. */
|
||
|
||
void
|
||
partial_symtab::end ()
|
||
{
|
||
global_psymbols.shrink_to_fit ();
|
||
static_psymbols.shrink_to_fit ();
|
||
|
||
/* Sort the global list; don't sort the static list. */
|
||
std::sort (global_psymbols.begin (),
|
||
global_psymbols.end (),
|
||
[] (partial_symbol *s1, partial_symbol *s2)
|
||
{
|
||
return strcmp_iw_ordered (s1->ginfo.search_name (),
|
||
s2->ginfo.search_name ()) < 0;
|
||
});
|
||
}
|
||
|
||
/* See psymtab.h. */
|
||
|
||
unsigned long
|
||
psymbol_bcache::hash (const void *addr, int length)
|
||
{
|
||
unsigned long h = 0;
|
||
struct partial_symbol *psymbol = (struct partial_symbol *) addr;
|
||
unsigned int lang = psymbol->ginfo.language ();
|
||
unsigned int domain = psymbol->domain;
|
||
unsigned int theclass = psymbol->aclass;
|
||
|
||
h = fast_hash (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
|
||
h = fast_hash (&lang, sizeof (unsigned int), h);
|
||
h = fast_hash (&domain, sizeof (unsigned int), h);
|
||
h = fast_hash (&theclass, sizeof (unsigned int), h);
|
||
/* Note that psymbol names are interned via compute_and_set_names, so
|
||
there's no need to hash the contents of the name here. */
|
||
h = fast_hash (&psymbol->ginfo.m_name, sizeof (psymbol->ginfo.m_name), h);
|
||
|
||
return h;
|
||
}
|
||
|
||
/* See psymtab.h. */
|
||
|
||
int
|
||
psymbol_bcache::compare (const void *addr1, const void *addr2, int length)
|
||
{
|
||
struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
|
||
struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
|
||
|
||
return (memcmp (&sym1->ginfo.value, &sym2->ginfo.value,
|
||
sizeof (sym1->ginfo.value)) == 0
|
||
&& sym1->ginfo.language () == sym2->ginfo.language ()
|
||
&& sym1->domain == sym2->domain
|
||
&& sym1->aclass == sym2->aclass
|
||
/* Note that psymbol names are interned via
|
||
compute_and_set_names, so there's no need to compare the
|
||
contents of the name here. */
|
||
&& sym1->ginfo.linkage_name () == sym2->ginfo.linkage_name ());
|
||
}
|
||
|
||
/* See psympriv.h. */
|
||
|
||
void
|
||
partial_symtab::add_psymbol (const partial_symbol &psymbol,
|
||
psymbol_placement where,
|
||
psymtab_storage *partial_symtabs,
|
||
struct objfile *objfile)
|
||
{
|
||
bool added;
|
||
|
||
/* Stash the partial symbol away in the cache. */
|
||
partial_symbol *psym
|
||
= ((struct partial_symbol *)
|
||
partial_symtabs->psymbol_cache.insert
|
||
(&psymbol, sizeof (struct partial_symbol), &added));
|
||
|
||
/* Do not duplicate global partial symbols. */
|
||
if (where == psymbol_placement::GLOBAL && !added)
|
||
return;
|
||
|
||
/* Save pointer to partial symbol in psymtab, growing symtab if needed. */
|
||
std::vector<partial_symbol *> &list
|
||
= (where == psymbol_placement::STATIC
|
||
? static_psymbols
|
||
: global_psymbols);
|
||
list.push_back (psym);
|
||
}
|
||
|
||
/* See psympriv.h. */
|
||
|
||
void
|
||
partial_symtab::add_psymbol (gdb::string_view name, bool copy_name,
|
||
domain_enum domain,
|
||
enum address_class theclass,
|
||
short section,
|
||
psymbol_placement where,
|
||
CORE_ADDR coreaddr,
|
||
enum language language,
|
||
psymtab_storage *partial_symtabs,
|
||
struct objfile *objfile)
|
||
{
|
||
struct partial_symbol psymbol;
|
||
memset (&psymbol, 0, sizeof (psymbol));
|
||
|
||
psymbol.set_unrelocated_address (coreaddr);
|
||
psymbol.ginfo.set_section_index (section);
|
||
psymbol.domain = domain;
|
||
psymbol.aclass = theclass;
|
||
psymbol.ginfo.set_language (language, partial_symtabs->obstack ());
|
||
psymbol.ginfo.compute_and_set_names (name, copy_name, objfile->per_bfd);
|
||
|
||
add_psymbol (psymbol, where, partial_symtabs, objfile);
|
||
}
|
||
|
||
/* See psympriv.h. */
|
||
|
||
partial_symtab::partial_symtab (const char *filename_,
|
||
psymtab_storage *partial_symtabs,
|
||
objfile_per_bfd_storage *objfile_per_bfd)
|
||
: searched_flag (PST_NOT_SEARCHED),
|
||
text_low_valid (0),
|
||
text_high_valid (0)
|
||
{
|
||
partial_symtabs->install_psymtab (this);
|
||
|
||
filename = objfile_per_bfd->intern (filename_);
|
||
|
||
if (symtab_create_debug)
|
||
{
|
||
/* Be a bit clever with debugging messages, and don't print objfile
|
||
every time, only when it changes. */
|
||
static std::string last_bfd_name;
|
||
const char *this_bfd_name
|
||
= bfd_get_filename (objfile_per_bfd->get_bfd ());
|
||
|
||
if (last_bfd_name.empty () || last_bfd_name != this_bfd_name)
|
||
{
|
||
last_bfd_name = this_bfd_name;
|
||
fprintf_filtered (gdb_stdlog,
|
||
"Creating one or more psymtabs for %s ...\n",
|
||
this_bfd_name);
|
||
}
|
||
fprintf_filtered (gdb_stdlog,
|
||
"Created psymtab %s for module %s.\n",
|
||
host_address_to_string (this), filename);
|
||
}
|
||
}
|
||
|
||
/* See psympriv.h. */
|
||
|
||
void
|
||
partial_symtab::expand_dependencies (struct objfile *objfile)
|
||
{
|
||
for (int i = 0; i < number_of_dependencies; ++i)
|
||
{
|
||
if (!dependencies[i]->readin_p (objfile)
|
||
&& dependencies[i]->user == NULL)
|
||
{
|
||
/* Inform about additional files to be read in. */
|
||
if (info_verbose)
|
||
{
|
||
fputs_filtered (" ", gdb_stdout);
|
||
wrap_here ("");
|
||
fputs_filtered ("and ", gdb_stdout);
|
||
wrap_here ("");
|
||
printf_filtered ("%s...", dependencies[i]->filename);
|
||
wrap_here (""); /* Flush output */
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
dependencies[i]->expand_psymtab (objfile);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
void
|
||
psymtab_storage::discard_psymtab (struct partial_symtab *pst)
|
||
{
|
||
struct partial_symtab **prev_pst;
|
||
|
||
/* From dbxread.c:
|
||
Empty psymtabs happen as a result of header files which don't
|
||
have any symbols in them. There can be a lot of them. But this
|
||
check is wrong, in that a psymtab with N_SLINE entries but
|
||
nothing else is not empty, but we don't realize that. Fixing
|
||
that without slowing things down might be tricky. */
|
||
|
||
/* First, snip it out of the psymtab chain. */
|
||
|
||
prev_pst = &psymtabs;
|
||
while ((*prev_pst) != pst)
|
||
prev_pst = &((*prev_pst)->next);
|
||
(*prev_pst) = pst->next;
|
||
delete pst;
|
||
}
|
||
|
||
|
||
|
||
/* Helper function for maintenance_print_psymbols to print the addrmap
|
||
of PSYMTAB. If PSYMTAB is NULL print the entire addrmap. */
|
||
|
||
static void
|
||
dump_psymtab_addrmap (struct objfile *objfile,
|
||
psymtab_storage *partial_symtabs,
|
||
struct partial_symtab *psymtab,
|
||
struct ui_file *outfile)
|
||
{
|
||
if ((psymtab == NULL
|
||
|| psymtab->psymtabs_addrmap_supported)
|
||
&& partial_symtabs->psymtabs_addrmap != NULL)
|
||
{
|
||
if (psymtab == nullptr)
|
||
fprintf_filtered (outfile, _("Entire address map:\n"));
|
||
else
|
||
fprintf_filtered (outfile, _("Address map:\n"));
|
||
addrmap_dump (partial_symtabs->psymtabs_addrmap, outfile, psymtab);
|
||
}
|
||
}
|
||
|
||
static void
|
||
maintenance_print_psymbols (const char *args, int from_tty)
|
||
{
|
||
struct ui_file *outfile = gdb_stdout;
|
||
char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
|
||
int i, outfile_idx, found;
|
||
CORE_ADDR pc = 0;
|
||
struct obj_section *section = NULL;
|
||
|
||
dont_repeat ();
|
||
|
||
gdb_argv argv (args);
|
||
|
||
for (i = 0; argv != NULL && argv[i] != NULL; ++i)
|
||
{
|
||
if (strcmp (argv[i], "-pc") == 0)
|
||
{
|
||
if (argv[i + 1] == NULL)
|
||
error (_("Missing pc value"));
|
||
address_arg = argv[++i];
|
||
}
|
||
else if (strcmp (argv[i], "-source") == 0)
|
||
{
|
||
if (argv[i + 1] == NULL)
|
||
error (_("Missing source file"));
|
||
source_arg = argv[++i];
|
||
}
|
||
else if (strcmp (argv[i], "-objfile") == 0)
|
||
{
|
||
if (argv[i + 1] == NULL)
|
||
error (_("Missing objfile name"));
|
||
objfile_arg = argv[++i];
|
||
}
|
||
else if (strcmp (argv[i], "--") == 0)
|
||
{
|
||
/* End of options. */
|
||
++i;
|
||
break;
|
||
}
|
||
else if (argv[i][0] == '-')
|
||
{
|
||
/* Future proofing: Don't allow OUTFILE to begin with "-". */
|
||
error (_("Unknown option: %s"), argv[i]);
|
||
}
|
||
else
|
||
break;
|
||
}
|
||
outfile_idx = i;
|
||
|
||
if (address_arg != NULL && source_arg != NULL)
|
||
error (_("Must specify at most one of -pc and -source"));
|
||
|
||
stdio_file arg_outfile;
|
||
|
||
if (argv != NULL && argv[outfile_idx] != NULL)
|
||
{
|
||
if (argv[outfile_idx + 1] != NULL)
|
||
error (_("Junk at end of command"));
|
||
gdb::unique_xmalloc_ptr<char> outfile_name
|
||
(tilde_expand (argv[outfile_idx]));
|
||
if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
|
||
perror_with_name (outfile_name.get ());
|
||
outfile = &arg_outfile;
|
||
}
|
||
|
||
if (address_arg != NULL)
|
||
{
|
||
pc = parse_and_eval_address (address_arg);
|
||
/* If we fail to find a section, that's ok, try the lookup anyway. */
|
||
section = find_pc_section (pc);
|
||
}
|
||
|
||
found = 0;
|
||
for (objfile *objfile : current_program_space->objfiles ())
|
||
{
|
||
int printed_objfile_header = 0;
|
||
int print_for_objfile = 1;
|
||
|
||
QUIT;
|
||
if (objfile_arg != NULL)
|
||
print_for_objfile
|
||
= compare_filenames_for_search (objfile_name (objfile),
|
||
objfile_arg);
|
||
if (!print_for_objfile)
|
||
continue;
|
||
|
||
for (const auto &iter : objfile->qf)
|
||
{
|
||
psymbol_functions *psf
|
||
= dynamic_cast<psymbol_functions *> (iter.get ());
|
||
if (psf == nullptr)
|
||
continue;
|
||
|
||
psymtab_storage *partial_symtabs
|
||
= psf->get_partial_symtabs ().get ();
|
||
|
||
if (address_arg != NULL)
|
||
{
|
||
struct bound_minimal_symbol msymbol = { NULL, NULL };
|
||
|
||
/* We don't assume each pc has a unique objfile (this is for
|
||
debugging). */
|
||
struct partial_symtab *ps
|
||
= psf->find_pc_sect_psymtab (objfile, pc, section, msymbol);
|
||
if (ps != NULL)
|
||
{
|
||
if (!printed_objfile_header)
|
||
{
|
||
outfile->printf ("\nPartial symtabs for objfile %s\n",
|
||
objfile_name (objfile));
|
||
printed_objfile_header = 1;
|
||
}
|
||
dump_psymtab (objfile, ps, outfile);
|
||
dump_psymtab_addrmap (objfile, partial_symtabs, ps, outfile);
|
||
found = 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (partial_symtab *ps : psf->require_partial_symbols (objfile))
|
||
{
|
||
int print_for_source = 0;
|
||
|
||
QUIT;
|
||
if (source_arg != NULL)
|
||
{
|
||
print_for_source
|
||
= compare_filenames_for_search (ps->filename, source_arg);
|
||
found = 1;
|
||
}
|
||
if (source_arg == NULL
|
||
|| print_for_source)
|
||
{
|
||
if (!printed_objfile_header)
|
||
{
|
||
outfile->printf ("\nPartial symtabs for objfile %s\n",
|
||
objfile_name (objfile));
|
||
printed_objfile_header = 1;
|
||
}
|
||
dump_psymtab (objfile, ps, outfile);
|
||
dump_psymtab_addrmap (objfile, partial_symtabs, ps,
|
||
outfile);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* If we're printing all the objfile's symbols dump the full addrmap. */
|
||
|
||
if (address_arg == NULL
|
||
&& source_arg == NULL
|
||
&& partial_symtabs->psymtabs_addrmap != NULL)
|
||
{
|
||
outfile->puts ("\n");
|
||
dump_psymtab_addrmap (objfile, partial_symtabs, NULL, outfile);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!found)
|
||
{
|
||
if (address_arg != NULL)
|
||
error (_("No partial symtab for address: %s"), address_arg);
|
||
if (source_arg != NULL)
|
||
error (_("No partial symtab for source file: %s"), source_arg);
|
||
}
|
||
}
|
||
|
||
/* List all the partial symbol tables whose names match REGEXP (optional). */
|
||
|
||
static void
|
||
maintenance_info_psymtabs (const char *regexp, int from_tty)
|
||
{
|
||
if (regexp)
|
||
re_comp (regexp);
|
||
|
||
for (struct program_space *pspace : program_spaces)
|
||
for (objfile *objfile : pspace->objfiles ())
|
||
{
|
||
struct gdbarch *gdbarch = objfile->arch ();
|
||
|
||
/* We don't want to print anything for this objfile until we
|
||
actually find a symtab whose name matches. */
|
||
int printed_objfile_start = 0;
|
||
|
||
for (const auto &iter : objfile->qf)
|
||
{
|
||
psymbol_functions *psf
|
||
= dynamic_cast<psymbol_functions *> (iter.get ());
|
||
if (psf == nullptr)
|
||
continue;
|
||
for (partial_symtab *psymtab : psf->require_partial_symbols (objfile))
|
||
{
|
||
QUIT;
|
||
|
||
if (! regexp
|
||
|| re_exec (psymtab->filename))
|
||
{
|
||
if (! printed_objfile_start)
|
||
{
|
||
printf_filtered ("{ objfile %s ", objfile_name (objfile));
|
||
wrap_here (" ");
|
||
printf_filtered ("((struct objfile *) %s)\n",
|
||
host_address_to_string (objfile));
|
||
printed_objfile_start = 1;
|
||
}
|
||
|
||
printf_filtered (" { psymtab %s ", psymtab->filename);
|
||
wrap_here (" ");
|
||
printf_filtered ("((struct partial_symtab *) %s)\n",
|
||
host_address_to_string (psymtab));
|
||
|
||
printf_filtered (" readin %s\n",
|
||
psymtab->readin_p (objfile) ? "yes" : "no");
|
||
printf_filtered (" fullname %s\n",
|
||
psymtab->fullname
|
||
? psymtab->fullname : "(null)");
|
||
printf_filtered (" text addresses ");
|
||
fputs_filtered (paddress (gdbarch,
|
||
psymtab->text_low (objfile)),
|
||
gdb_stdout);
|
||
printf_filtered (" -- ");
|
||
fputs_filtered (paddress (gdbarch,
|
||
psymtab->text_high (objfile)),
|
||
gdb_stdout);
|
||
printf_filtered ("\n");
|
||
printf_filtered (" psymtabs_addrmap_supported %s\n",
|
||
(psymtab->psymtabs_addrmap_supported
|
||
? "yes" : "no"));
|
||
printf_filtered (" globals ");
|
||
if (!psymtab->global_psymbols.empty ())
|
||
printf_filtered
|
||
("(* (struct partial_symbol **) %s @ %d)\n",
|
||
host_address_to_string (psymtab->global_psymbols.data ()),
|
||
(int) psymtab->global_psymbols.size ());
|
||
else
|
||
printf_filtered ("(none)\n");
|
||
printf_filtered (" statics ");
|
||
if (!psymtab->static_psymbols.empty ())
|
||
printf_filtered
|
||
("(* (struct partial_symbol **) %s @ %d)\n",
|
||
host_address_to_string (psymtab->static_psymbols.data ()),
|
||
(int) psymtab->static_psymbols.size ());
|
||
else
|
||
printf_filtered ("(none)\n");
|
||
if (psymtab->user)
|
||
printf_filtered (" user %s "
|
||
"((struct partial_symtab *) %s)\n",
|
||
psymtab->user->filename,
|
||
host_address_to_string (psymtab->user));
|
||
printf_filtered (" dependencies ");
|
||
if (psymtab->number_of_dependencies)
|
||
{
|
||
int i;
|
||
|
||
printf_filtered ("{\n");
|
||
for (i = 0; i < psymtab->number_of_dependencies; i++)
|
||
{
|
||
struct partial_symtab *dep = psymtab->dependencies[i];
|
||
|
||
/* Note the string concatenation there --- no
|
||
comma. */
|
||
printf_filtered (" psymtab %s "
|
||
"((struct partial_symtab *) %s)\n",
|
||
dep->filename,
|
||
host_address_to_string (dep));
|
||
}
|
||
printf_filtered (" }\n");
|
||
}
|
||
else
|
||
printf_filtered ("(none)\n");
|
||
printf_filtered (" }\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
if (printed_objfile_start)
|
||
printf_filtered ("}\n");
|
||
}
|
||
}
|
||
|
||
/* Check consistency of currently expanded psymtabs vs symtabs. */
|
||
|
||
static void
|
||
maintenance_check_psymtabs (const char *ignore, int from_tty)
|
||
{
|
||
struct symbol *sym;
|
||
struct compunit_symtab *cust = NULL;
|
||
const struct blockvector *bv;
|
||
const struct block *b;
|
||
|
||
for (objfile *objfile : current_program_space->objfiles ())
|
||
{
|
||
for (const auto &iter : objfile->qf)
|
||
{
|
||
psymbol_functions *psf
|
||
= dynamic_cast<psymbol_functions *> (iter.get ());
|
||
if (psf == nullptr)
|
||
continue;
|
||
|
||
for (partial_symtab *ps : psf->require_partial_symbols (objfile))
|
||
{
|
||
struct gdbarch *gdbarch = objfile->arch ();
|
||
|
||
/* We don't call psymtab_to_symtab here because that may cause symtab
|
||
expansion. When debugging a problem it helps if checkers leave
|
||
things unchanged. */
|
||
cust = ps->get_compunit_symtab (objfile);
|
||
|
||
/* First do some checks that don't require the associated symtab. */
|
||
if (ps->text_high (objfile) < ps->text_low (objfile))
|
||
{
|
||
printf_filtered ("Psymtab ");
|
||
puts_filtered (ps->filename);
|
||
printf_filtered (" covers bad range ");
|
||
fputs_filtered (paddress (gdbarch, ps->text_low (objfile)),
|
||
gdb_stdout);
|
||
printf_filtered (" - ");
|
||
fputs_filtered (paddress (gdbarch, ps->text_high (objfile)),
|
||
gdb_stdout);
|
||
printf_filtered ("\n");
|
||
continue;
|
||
}
|
||
|
||
/* Now do checks requiring the associated symtab. */
|
||
if (cust == NULL)
|
||
continue;
|
||
bv = COMPUNIT_BLOCKVECTOR (cust);
|
||
b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
|
||
for (partial_symbol *psym : ps->static_psymbols)
|
||
{
|
||
/* Skip symbols for inlined functions without address. These may
|
||
or may not have a match in the full symtab. */
|
||
if (psym->aclass == LOC_BLOCK
|
||
&& psym->ginfo.value.address == 0)
|
||
continue;
|
||
|
||
sym = block_lookup_symbol (b, psym->ginfo.search_name (),
|
||
symbol_name_match_type::SEARCH_NAME,
|
||
psym->domain);
|
||
if (!sym)
|
||
{
|
||
printf_filtered ("Static symbol `");
|
||
puts_filtered (psym->ginfo.linkage_name ());
|
||
printf_filtered ("' only found in ");
|
||
puts_filtered (ps->filename);
|
||
printf_filtered (" psymtab\n");
|
||
}
|
||
}
|
||
b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
|
||
for (partial_symbol *psym : ps->global_psymbols)
|
||
{
|
||
sym = block_lookup_symbol (b, psym->ginfo.search_name (),
|
||
symbol_name_match_type::SEARCH_NAME,
|
||
psym->domain);
|
||
if (!sym)
|
||
{
|
||
printf_filtered ("Global symbol `");
|
||
puts_filtered (psym->ginfo.linkage_name ());
|
||
printf_filtered ("' only found in ");
|
||
puts_filtered (ps->filename);
|
||
printf_filtered (" psymtab\n");
|
||
}
|
||
}
|
||
if (ps->raw_text_high () != 0
|
||
&& (ps->text_low (objfile) < BLOCK_START (b)
|
||
|| ps->text_high (objfile) > BLOCK_END (b)))
|
||
{
|
||
printf_filtered ("Psymtab ");
|
||
puts_filtered (ps->filename);
|
||
printf_filtered (" covers ");
|
||
fputs_filtered (paddress (gdbarch, ps->text_low (objfile)),
|
||
gdb_stdout);
|
||
printf_filtered (" - ");
|
||
fputs_filtered (paddress (gdbarch, ps->text_high (objfile)),
|
||
gdb_stdout);
|
||
printf_filtered (" but symtab covers only ");
|
||
fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
|
||
printf_filtered (" - ");
|
||
fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
|
||
printf_filtered ("\n");
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void _initialize_psymtab ();
|
||
void
|
||
_initialize_psymtab ()
|
||
{
|
||
add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
|
||
Print dump of current partial symbol definitions.\n\
|
||
Usage: mt print psymbols [-objfile OBJFILE] [-pc ADDRESS] [--] [OUTFILE]\n\
|
||
mt print psymbols [-objfile OBJFILE] [-source SOURCE] [--] [OUTFILE]\n\
|
||
Entries in the partial symbol table are dumped to file OUTFILE,\n\
|
||
or the terminal if OUTFILE is unspecified.\n\
|
||
If ADDRESS is provided, dump only the file for that address.\n\
|
||
If SOURCE is provided, dump only that file's symbols.\n\
|
||
If OBJFILE is provided, dump only that file's minimal symbols."),
|
||
&maintenanceprintlist);
|
||
|
||
add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
|
||
List the partial symbol tables for all object files.\n\
|
||
This does not include information about individual partial symbols,\n\
|
||
just the symbol table structures themselves."),
|
||
&maintenanceinfolist);
|
||
|
||
add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
|
||
_("\
|
||
Check consistency of currently expanded psymtabs versus symtabs."),
|
||
&maintenancelist);
|
||
}
|