forked from Imagelibrary/binutils-gdb
cc96ae7f88
Add support for DW_LNS_set_prologue_end when building line-tables. This
attribute can be set by the compiler to indicate that an instruction is
an adequate place to set a breakpoint just after the prologue of a
function.
The compiler might set multiple prologue_end, but considering how
current skip_prologue_using_sal works, this commit modifies it to accept
the first instruction with this marker (if any) to be the place where a
breakpoint should be placed to be at the end of the prologue.
The need for this support came from a problematic usecase generated by
hipcc (i.e. clang). The problem is as follows: There's a function
(lets call it foo) which covers PC from 0xa800 to 0xa950. The body of
foo begins with a call to an inlined function, covering from 0xa800 to
0xa94c. The issue is that when placing a breakpoint at 'foo', GDB
inserts the breakpoint at 0xa818. The 0x18 offset is what GDB thinks is
foo's first address past the prologue.
Later, when hitting the breakpoint, GDB reports the stop within the
inlined function because the PC falls in its range while the user
expects to stop in FOO.
Looking at the line-table for this location, we have:
INDEX LINE ADDRESS IS-STMT
[...]
14 293 0x000000000000a66c Y
15 END 0x000000000000a6e0 Y
16 287 0x000000000000a800 Y
17 END 0x000000000000a818 Y
18 287 0x000000000000a824 Y
[...]
For comparison, let's look at llvm-dwarfdump's output for this CU:
Address Line Column File ISA Discriminator Flags
------------------ ------ ------ ------ --- ------------- -------------
[...]
0x000000000000a66c 293 12 2 0 0 is_stmt
0x000000000000a6e0 96 43 82 0 0 is_stmt
0x000000000000a6f8 102 18 82 0 0 is_stmt
0x000000000000a70c 102 24 82 0 0
0x000000000000a710 102 18 82 0 0
0x000000000000a72c 101 16 82 0 0 is_stmt
0x000000000000a73c 2915 50 83 0 0 is_stmt
0x000000000000a74c 110 1 1 0 0 is_stmt
0x000000000000a750 110 1 1 0 0 is_stmt end_sequence
0x000000000000a800 107 0 1 0 0 is_stmt
0x000000000000a800 287 12 2 0 0 is_stmt prologue_end
0x000000000000a818 114 59 81 0 0 is_stmt
0x000000000000a824 287 12 2 0 0 is_stmt
0x000000000000a828 100 58 82 0 0 is_stmt
[...]
The main difference we are interested in here is that llvm-dwarfdump's
output tells us that 0xa800 is an adequate place to place a breakpoint
past a function prologue. Since we know that foo covers from 0xa800 to
0xa94c, 0xa800 is the address at which the breakpoint should be placed
if the user wants to break in foo.
This commit proposes to add support for the prologue_end flag in the
line-program processing.
The processing of this prologue_end flag is made in skip_prologue_sal,
before it calls gdbarch_skip_prologue_noexcept. The intent is that if
the compiler gave information on where the prologue ends, we should use
this information and not try to rely on architecture dependent logic to
guess it.
The testsuite have been executed using this patch on GNU/Linux x86_64.
Testcases have been compiled with both gcc/g++ (verison 9.4.0) and
clang/clang++ (version 10.0.0) since at the time of writing GCC does not
set the prologue_end marker. Tests done with GCC 11.2.0 (not over the
entire testsuite) show that it does not emit this flag either.
No regression have been observed with GCC or Clang. Note that when
using Clang, this patch fixes a failure in
gdb.opt/inline-small-func.exp.
Change-Id: I720449a8a9b2e1fb45b54c6095d3b1e9da9152f8
1101 lines
30 KiB
C
1101 lines
30 KiB
C
/* Do various things to symbol tables (other than lookup), for GDB.
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Copyright (C) 1986-2022 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 "gdbtypes.h"
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#include "bfd.h"
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#include "filenames.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "breakpoint.h"
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#include "command.h"
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#include "gdbsupport/gdb_obstack.h"
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#include "language.h"
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#include "bcache.h"
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#include "block.h"
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#include "gdbsupport/gdb_regex.h"
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#include <sys/stat.h>
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#include "dictionary.h"
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#include "typeprint.h"
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#include "gdbcmd.h"
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#include "source.h"
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#include "readline/tilde.h"
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#include <cli/cli-style.h>
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#include "gdbsupport/buildargv.h"
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/* Prototypes for local functions */
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static int block_depth (const struct block *);
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static void print_symbol (struct gdbarch *gdbarch, struct symbol *symbol,
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int depth, ui_file *outfile);
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void
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print_objfile_statistics (void)
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{
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int i, linetables, blockvectors;
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for (struct program_space *pspace : program_spaces)
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for (objfile *objfile : pspace->objfiles ())
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{
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QUIT;
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gdb_printf (_("Statistics for '%s':\n"), objfile_name (objfile));
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if (OBJSTAT (objfile, n_stabs) > 0)
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gdb_printf (_(" Number of \"stab\" symbols read: %d\n"),
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OBJSTAT (objfile, n_stabs));
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if (objfile->per_bfd->n_minsyms > 0)
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gdb_printf (_(" Number of \"minimal\" symbols read: %d\n"),
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objfile->per_bfd->n_minsyms);
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if (OBJSTAT (objfile, n_syms) > 0)
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gdb_printf (_(" Number of \"full\" symbols read: %d\n"),
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OBJSTAT (objfile, n_syms));
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if (OBJSTAT (objfile, n_types) > 0)
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gdb_printf (_(" Number of \"types\" defined: %d\n"),
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OBJSTAT (objfile, n_types));
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i = linetables = 0;
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for (compunit_symtab *cu : objfile->compunits ())
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{
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for (symtab *s : cu->filetabs ())
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{
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i++;
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if (s->linetable () != NULL)
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linetables++;
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}
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}
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blockvectors = std::distance (objfile->compunits ().begin (),
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objfile->compunits ().end ());
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gdb_printf (_(" Number of symbol tables: %d\n"), i);
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gdb_printf (_(" Number of symbol tables with line tables: %d\n"),
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linetables);
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gdb_printf (_(" Number of symbol tables with blockvectors: %d\n"),
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blockvectors);
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objfile->print_stats (false);
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if (OBJSTAT (objfile, sz_strtab) > 0)
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gdb_printf (_(" Space used by string tables: %d\n"),
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OBJSTAT (objfile, sz_strtab));
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gdb_printf (_(" Total memory used for objfile obstack: %s\n"),
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pulongest (obstack_memory_used (&objfile
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->objfile_obstack)));
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gdb_printf (_(" Total memory used for BFD obstack: %s\n"),
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pulongest (obstack_memory_used (&objfile->per_bfd
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->storage_obstack)));
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gdb_printf (_(" Total memory used for string cache: %d\n"),
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objfile->per_bfd->string_cache.memory_used ());
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gdb_printf (_("Byte cache statistics for '%s':\n"),
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objfile_name (objfile));
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objfile->per_bfd->string_cache.print_statistics ("string cache");
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objfile->print_stats (true);
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}
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}
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static void
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dump_objfile (struct objfile *objfile)
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{
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gdb_printf ("\nObject file %s: ", objfile_name (objfile));
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gdb_printf ("Objfile at %s, bfd at %s, %d minsyms\n\n",
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host_address_to_string (objfile),
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host_address_to_string (objfile->obfd),
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objfile->per_bfd->minimal_symbol_count);
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objfile->dump ();
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if (objfile->compunit_symtabs != NULL)
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{
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gdb_printf ("Symtabs:\n");
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for (compunit_symtab *cu : objfile->compunits ())
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{
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for (symtab *symtab : cu->filetabs ())
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{
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gdb_printf ("%s at %s",
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symtab_to_filename_for_display (symtab),
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host_address_to_string (symtab));
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if (symtab->objfile () != objfile)
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gdb_printf (", NOT ON CHAIN!");
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gdb_printf ("\n");
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}
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}
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gdb_printf ("\n\n");
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}
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}
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/* Print minimal symbols from this objfile. */
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static void
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dump_msymbols (struct objfile *objfile, struct ui_file *outfile)
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{
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struct gdbarch *gdbarch = objfile->arch ();
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int index;
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char ms_type;
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gdb_printf (outfile, "\nObject file %s:\n\n", objfile_name (objfile));
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if (objfile->per_bfd->minimal_symbol_count == 0)
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{
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gdb_printf (outfile, "No minimal symbols found.\n");
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return;
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}
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index = 0;
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for (minimal_symbol *msymbol : objfile->msymbols ())
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{
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struct obj_section *section = msymbol->obj_section (objfile);
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switch (MSYMBOL_TYPE (msymbol))
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{
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case mst_unknown:
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ms_type = 'u';
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break;
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case mst_text:
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ms_type = 'T';
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break;
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case mst_text_gnu_ifunc:
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case mst_data_gnu_ifunc:
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ms_type = 'i';
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break;
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case mst_solib_trampoline:
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ms_type = 'S';
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break;
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case mst_data:
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ms_type = 'D';
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break;
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case mst_bss:
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ms_type = 'B';
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break;
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case mst_abs:
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ms_type = 'A';
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break;
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case mst_file_text:
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ms_type = 't';
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break;
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case mst_file_data:
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ms_type = 'd';
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break;
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case mst_file_bss:
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ms_type = 'b';
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break;
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default:
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ms_type = '?';
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break;
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}
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gdb_printf (outfile, "[%2d] %c ", index, ms_type);
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/* Use the relocated address as shown in the symbol here -- do
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not try to respect copy relocations. */
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CORE_ADDR addr = (msymbol->value.address
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+ objfile->section_offsets[msymbol->section_index ()]);
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gdb_puts (paddress (gdbarch, addr), outfile);
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gdb_printf (outfile, " %s", msymbol->linkage_name ());
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if (section)
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{
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if (section->the_bfd_section != NULL)
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gdb_printf (outfile, " section %s",
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bfd_section_name (section->the_bfd_section));
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else
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gdb_printf (outfile, " spurious section %ld",
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(long) (section - objfile->sections));
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}
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if (msymbol->demangled_name () != NULL)
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{
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gdb_printf (outfile, " %s", msymbol->demangled_name ());
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}
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if (msymbol->filename)
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gdb_printf (outfile, " %s", msymbol->filename);
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gdb_puts ("\n", outfile);
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index++;
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}
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if (objfile->per_bfd->minimal_symbol_count != index)
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{
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warning (_("internal error: minimal symbol count %d != %d"),
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objfile->per_bfd->minimal_symbol_count, index);
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}
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gdb_printf (outfile, "\n");
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}
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static void
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dump_symtab_1 (struct symtab *symtab, struct ui_file *outfile)
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{
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struct objfile *objfile = symtab->objfile ();
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struct gdbarch *gdbarch = objfile->arch ();
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int i;
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struct mdict_iterator miter;
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int len;
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struct linetable *l;
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const struct blockvector *bv;
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struct symbol *sym;
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const struct block *b;
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int depth;
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gdb_printf (outfile, "\nSymtab for file %s at %s\n",
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symtab_to_filename_for_display (symtab),
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host_address_to_string (symtab));
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if (symtab->dirname () != NULL)
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gdb_printf (outfile, "Compilation directory is %s\n",
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symtab->dirname ());
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gdb_printf (outfile, "Read from object file %s (%s)\n",
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objfile_name (objfile),
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host_address_to_string (objfile));
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gdb_printf (outfile, "Language: %s\n",
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language_str (symtab->language ()));
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/* First print the line table. */
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l = symtab->linetable ();
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if (l)
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{
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gdb_printf (outfile, "\nLine table:\n\n");
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len = l->nitems;
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for (i = 0; i < len; i++)
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{
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gdb_printf (outfile, " line %d at ", l->item[i].line);
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gdb_puts (paddress (gdbarch, l->item[i].pc), outfile);
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if (l->item[i].is_stmt)
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gdb_printf (outfile, "\t(stmt)");
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gdb_printf (outfile, "\n");
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}
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}
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/* Now print the block info, but only for compunit symtabs since we will
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print lots of duplicate info otherwise. */
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if (is_main_symtab_of_compunit_symtab (symtab))
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{
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gdb_printf (outfile, "\nBlockvector:\n\n");
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bv = symtab->blockvector ();
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len = BLOCKVECTOR_NBLOCKS (bv);
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for (i = 0; i < len; i++)
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{
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b = BLOCKVECTOR_BLOCK (bv, i);
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depth = block_depth (b) * 2;
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gdb_printf (outfile, "%*sblock #%03d, object at %s",
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depth, "", i,
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host_address_to_string (b));
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if (BLOCK_SUPERBLOCK (b))
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gdb_printf (outfile, " under %s",
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host_address_to_string (BLOCK_SUPERBLOCK (b)));
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/* drow/2002-07-10: We could save the total symbols count
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even if we're using a hashtable, but nothing else but this message
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wants it. */
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gdb_printf (outfile, ", %d syms/buckets in ",
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mdict_size (BLOCK_MULTIDICT (b)));
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gdb_puts (paddress (gdbarch, BLOCK_START (b)), outfile);
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gdb_printf (outfile, "..");
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gdb_puts (paddress (gdbarch, BLOCK_END (b)), outfile);
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if (BLOCK_FUNCTION (b))
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{
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gdb_printf (outfile, ", function %s",
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BLOCK_FUNCTION (b)->linkage_name ());
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if (BLOCK_FUNCTION (b)->demangled_name () != NULL)
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{
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gdb_printf (outfile, ", %s",
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BLOCK_FUNCTION (b)->demangled_name ());
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}
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}
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gdb_printf (outfile, "\n");
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/* Now print each symbol in this block (in no particular order, if
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we're using a hashtable). Note that we only want this
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block, not any blocks from included symtabs. */
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ALL_DICT_SYMBOLS (BLOCK_MULTIDICT (b), miter, sym)
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{
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try
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{
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print_symbol (gdbarch, sym, depth + 1, outfile);
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}
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catch (const gdb_exception_error &ex)
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{
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exception_fprintf (gdb_stderr, ex,
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"Error printing symbol:\n");
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}
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}
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}
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gdb_printf (outfile, "\n");
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}
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else
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{
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compunit_symtab *compunit = symtab->compunit ();
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const char *compunit_filename
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= symtab_to_filename_for_display (compunit->primary_filetab ());
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gdb_printf (outfile,
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"\nBlockvector same as owning compunit: %s\n\n",
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compunit_filename);
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}
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/* Print info about the user of this compunit_symtab, and the
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compunit_symtabs included by this one. */
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if (is_main_symtab_of_compunit_symtab (symtab))
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{
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struct compunit_symtab *cust = symtab->compunit ();
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if (cust->user != nullptr)
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{
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const char *addr
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= host_address_to_string (cust->user->primary_filetab ());
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gdb_printf (outfile, "Compunit user: %s\n", addr);
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}
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if (cust->includes != nullptr)
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for (i = 0; ; ++i)
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{
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struct compunit_symtab *include = cust->includes[i];
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if (include == nullptr)
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break;
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const char *addr
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= host_address_to_string (include->primary_filetab ());
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gdb_printf (outfile, "Compunit include: %s\n", addr);
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}
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}
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}
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static void
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dump_symtab (struct symtab *symtab, struct ui_file *outfile)
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{
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/* Set the current language to the language of the symtab we're dumping
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because certain routines used during dump_symtab() use the current
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language to print an image of the symbol. We'll restore it later.
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But use only real languages, not placeholders. */
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if (symtab->language () != language_unknown
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&& symtab->language () != language_auto)
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{
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scoped_restore_current_language save_lang;
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set_language (symtab->language ());
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dump_symtab_1 (symtab, outfile);
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}
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else
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dump_symtab_1 (symtab, outfile);
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}
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static void
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maintenance_print_symbols (const char *args, int from_tty)
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{
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struct ui_file *outfile = gdb_stdout;
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char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
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int i, outfile_idx;
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dont_repeat ();
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gdb_argv argv (args);
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for (i = 0; argv != NULL && argv[i] != NULL; ++i)
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{
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if (strcmp (argv[i], "-pc") == 0)
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{
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if (argv[i + 1] == NULL)
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error (_("Missing pc value"));
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address_arg = argv[++i];
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}
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else if (strcmp (argv[i], "-source") == 0)
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{
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if (argv[i + 1] == NULL)
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error (_("Missing source file"));
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source_arg = argv[++i];
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}
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else if (strcmp (argv[i], "-objfile") == 0)
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{
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if (argv[i + 1] == NULL)
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error (_("Missing objfile name"));
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objfile_arg = argv[++i];
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}
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else if (strcmp (argv[i], "--") == 0)
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{
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/* End of options. */
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++i;
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break;
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}
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else if (argv[i][0] == '-')
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{
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/* Future proofing: Don't allow OUTFILE to begin with "-". */
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error (_("Unknown option: %s"), argv[i]);
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}
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else
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break;
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}
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outfile_idx = i;
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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)
|
||
{
|
||
CORE_ADDR pc = parse_and_eval_address (address_arg);
|
||
struct symtab *s = find_pc_line_symtab (pc);
|
||
|
||
if (s == NULL)
|
||
error (_("No symtab for address: %s"), address_arg);
|
||
dump_symtab (s, outfile);
|
||
}
|
||
else
|
||
{
|
||
int found = 0;
|
||
|
||
for (objfile *objfile : current_program_space->objfiles ())
|
||
{
|
||
int print_for_objfile = 1;
|
||
|
||
if (objfile_arg != NULL)
|
||
print_for_objfile
|
||
= compare_filenames_for_search (objfile_name (objfile),
|
||
objfile_arg);
|
||
if (!print_for_objfile)
|
||
continue;
|
||
|
||
for (compunit_symtab *cu : objfile->compunits ())
|
||
{
|
||
for (symtab *s : cu->filetabs ())
|
||
{
|
||
int print_for_source = 0;
|
||
|
||
QUIT;
|
||
if (source_arg != NULL)
|
||
{
|
||
print_for_source
|
||
= compare_filenames_for_search
|
||
(symtab_to_filename_for_display (s), source_arg);
|
||
found = 1;
|
||
}
|
||
if (source_arg == NULL
|
||
|| print_for_source)
|
||
dump_symtab (s, outfile);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (source_arg != NULL && !found)
|
||
error (_("No symtab for source file: %s"), source_arg);
|
||
}
|
||
}
|
||
|
||
/* Print symbol SYMBOL on OUTFILE. DEPTH says how far to indent. */
|
||
|
||
static void
|
||
print_symbol (struct gdbarch *gdbarch, struct symbol *symbol,
|
||
int depth, ui_file *outfile)
|
||
{
|
||
struct obj_section *section;
|
||
|
||
if (symbol->is_objfile_owned ())
|
||
section = symbol->obj_section (symbol_objfile (symbol));
|
||
else
|
||
section = NULL;
|
||
|
||
print_spaces (depth, outfile);
|
||
if (symbol->domain () == LABEL_DOMAIN)
|
||
{
|
||
gdb_printf (outfile, "label %s at ", symbol->print_name ());
|
||
gdb_puts (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
|
||
outfile);
|
||
if (section)
|
||
gdb_printf (outfile, " section %s\n",
|
||
bfd_section_name (section->the_bfd_section));
|
||
else
|
||
gdb_printf (outfile, "\n");
|
||
return;
|
||
}
|
||
|
||
if (symbol->domain () == STRUCT_DOMAIN)
|
||
{
|
||
if (symbol->type ()->name ())
|
||
{
|
||
current_language->print_type (symbol->type (), "", outfile, 1, depth,
|
||
&type_print_raw_options);
|
||
}
|
||
else
|
||
{
|
||
gdb_printf (outfile, "%s %s = ",
|
||
(symbol->type ()->code () == TYPE_CODE_ENUM
|
||
? "enum"
|
||
: (symbol->type ()->code () == TYPE_CODE_STRUCT
|
||
? "struct" : "union")),
|
||
symbol->linkage_name ());
|
||
current_language->print_type (symbol->type (), "", outfile, 1, depth,
|
||
&type_print_raw_options);
|
||
}
|
||
gdb_printf (outfile, ";\n");
|
||
}
|
||
else
|
||
{
|
||
if (symbol->aclass () == LOC_TYPEDEF)
|
||
gdb_printf (outfile, "typedef ");
|
||
if (symbol->type ())
|
||
{
|
||
/* Print details of types, except for enums where it's clutter. */
|
||
current_language->print_type (symbol->type (), symbol->print_name (),
|
||
outfile,
|
||
symbol->type ()->code () != TYPE_CODE_ENUM,
|
||
depth,
|
||
&type_print_raw_options);
|
||
gdb_printf (outfile, "; ");
|
||
}
|
||
else
|
||
gdb_printf (outfile, "%s ", symbol->print_name ());
|
||
|
||
switch (symbol->aclass ())
|
||
{
|
||
case LOC_CONST:
|
||
gdb_printf (outfile, "const %s (%s)",
|
||
plongest (SYMBOL_VALUE (symbol)),
|
||
hex_string (SYMBOL_VALUE (symbol)));
|
||
break;
|
||
|
||
case LOC_CONST_BYTES:
|
||
{
|
||
unsigned i;
|
||
struct type *type = check_typedef (symbol->type ());
|
||
|
||
gdb_printf (outfile, "const %s hex bytes:",
|
||
pulongest (TYPE_LENGTH (type)));
|
||
for (i = 0; i < TYPE_LENGTH (type); i++)
|
||
gdb_printf (outfile, " %02x",
|
||
(unsigned) SYMBOL_VALUE_BYTES (symbol)[i]);
|
||
}
|
||
break;
|
||
|
||
case LOC_STATIC:
|
||
gdb_printf (outfile, "static at ");
|
||
gdb_puts (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
|
||
outfile);
|
||
if (section)
|
||
gdb_printf (outfile, " section %s",
|
||
bfd_section_name (section->the_bfd_section));
|
||
break;
|
||
|
||
case LOC_REGISTER:
|
||
if (symbol->is_argument ())
|
||
gdb_printf (outfile, "parameter register %s",
|
||
plongest (SYMBOL_VALUE (symbol)));
|
||
else
|
||
gdb_printf (outfile, "register %s",
|
||
plongest (SYMBOL_VALUE (symbol)));
|
||
break;
|
||
|
||
case LOC_ARG:
|
||
gdb_printf (outfile, "arg at offset %s",
|
||
hex_string (SYMBOL_VALUE (symbol)));
|
||
break;
|
||
|
||
case LOC_REF_ARG:
|
||
gdb_printf (outfile, "reference arg at %s",
|
||
hex_string (SYMBOL_VALUE (symbol)));
|
||
break;
|
||
|
||
case LOC_REGPARM_ADDR:
|
||
gdb_printf (outfile, "address parameter register %s",
|
||
plongest (SYMBOL_VALUE (symbol)));
|
||
break;
|
||
|
||
case LOC_LOCAL:
|
||
gdb_printf (outfile, "local at offset %s",
|
||
hex_string (SYMBOL_VALUE (symbol)));
|
||
break;
|
||
|
||
case LOC_TYPEDEF:
|
||
break;
|
||
|
||
case LOC_LABEL:
|
||
gdb_printf (outfile, "label at ");
|
||
gdb_puts (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
|
||
outfile);
|
||
if (section)
|
||
gdb_printf (outfile, " section %s",
|
||
bfd_section_name (section->the_bfd_section));
|
||
break;
|
||
|
||
case LOC_BLOCK:
|
||
gdb_printf
|
||
(outfile, "block object %s, %s..%s",
|
||
host_address_to_string (SYMBOL_BLOCK_VALUE (symbol)),
|
||
paddress (gdbarch, BLOCK_START (SYMBOL_BLOCK_VALUE (symbol))),
|
||
paddress (gdbarch, BLOCK_END (SYMBOL_BLOCK_VALUE (symbol))));
|
||
if (section)
|
||
gdb_printf (outfile, " section %s",
|
||
bfd_section_name (section->the_bfd_section));
|
||
break;
|
||
|
||
case LOC_COMPUTED:
|
||
gdb_printf (outfile, "computed at runtime");
|
||
break;
|
||
|
||
case LOC_UNRESOLVED:
|
||
gdb_printf (outfile, "unresolved");
|
||
break;
|
||
|
||
case LOC_OPTIMIZED_OUT:
|
||
gdb_printf (outfile, "optimized out");
|
||
break;
|
||
|
||
default:
|
||
gdb_printf (outfile, "botched symbol class %x",
|
||
symbol->aclass ());
|
||
break;
|
||
}
|
||
}
|
||
gdb_printf (outfile, "\n");
|
||
}
|
||
|
||
static void
|
||
maintenance_print_msymbols (const char *args, int from_tty)
|
||
{
|
||
struct ui_file *outfile = gdb_stdout;
|
||
char *objfile_arg = NULL;
|
||
int i, outfile_idx;
|
||
|
||
dont_repeat ();
|
||
|
||
gdb_argv argv (args);
|
||
|
||
for (i = 0; argv != NULL && argv[i] != NULL; ++i)
|
||
{
|
||
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;
|
||
|
||
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;
|
||
}
|
||
|
||
for (objfile *objfile : current_program_space->objfiles ())
|
||
{
|
||
QUIT;
|
||
if (objfile_arg == NULL
|
||
|| compare_filenames_for_search (objfile_name (objfile), objfile_arg))
|
||
dump_msymbols (objfile, outfile);
|
||
}
|
||
}
|
||
|
||
static void
|
||
maintenance_print_objfiles (const char *regexp, int from_tty)
|
||
{
|
||
dont_repeat ();
|
||
|
||
if (regexp)
|
||
re_comp (regexp);
|
||
|
||
for (struct program_space *pspace : program_spaces)
|
||
for (objfile *objfile : pspace->objfiles ())
|
||
{
|
||
QUIT;
|
||
if (! regexp
|
||
|| re_exec (objfile_name (objfile)))
|
||
dump_objfile (objfile);
|
||
}
|
||
}
|
||
|
||
/* List all the symbol tables whose names match REGEXP (optional). */
|
||
|
||
static void
|
||
maintenance_info_symtabs (const char *regexp, int from_tty)
|
||
{
|
||
dont_repeat ();
|
||
|
||
if (regexp)
|
||
re_comp (regexp);
|
||
|
||
for (struct program_space *pspace : program_spaces)
|
||
for (objfile *objfile : pspace->objfiles ())
|
||
{
|
||
/* 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 (compunit_symtab *cust : objfile->compunits ())
|
||
{
|
||
int printed_compunit_symtab_start = 0;
|
||
|
||
for (symtab *symtab : cust->filetabs ())
|
||
{
|
||
QUIT;
|
||
|
||
if (! regexp
|
||
|| re_exec (symtab_to_filename_for_display (symtab)))
|
||
{
|
||
if (! printed_objfile_start)
|
||
{
|
||
gdb_printf ("{ objfile %s ", objfile_name (objfile));
|
||
gdb_stdout->wrap_here (2);
|
||
gdb_printf ("((struct objfile *) %s)\n",
|
||
host_address_to_string (objfile));
|
||
printed_objfile_start = 1;
|
||
}
|
||
if (! printed_compunit_symtab_start)
|
||
{
|
||
gdb_printf (" { ((struct compunit_symtab *) %s)\n",
|
||
host_address_to_string (cust));
|
||
gdb_printf (" debugformat %s\n",
|
||
cust->debugformat ());
|
||
gdb_printf (" producer %s\n",
|
||
(cust->producer () != nullptr
|
||
? cust->producer () : "(null)"));
|
||
gdb_printf (" name %s\n", cust->name);
|
||
gdb_printf (" dirname %s\n",
|
||
(cust->dirname () != NULL
|
||
? cust->dirname () : "(null)"));
|
||
gdb_printf (" blockvector"
|
||
" ((struct blockvector *) %s)\n",
|
||
host_address_to_string
|
||
(cust->blockvector ()));
|
||
gdb_printf (" user"
|
||
" ((struct compunit_symtab *) %s)\n",
|
||
cust->user != nullptr
|
||
? host_address_to_string (cust->user)
|
||
: "(null)");
|
||
if (cust->includes != nullptr)
|
||
{
|
||
gdb_printf (" ( includes\n");
|
||
for (int i = 0; ; ++i)
|
||
{
|
||
struct compunit_symtab *include
|
||
= cust->includes[i];
|
||
if (include == nullptr)
|
||
break;
|
||
const char *addr
|
||
= host_address_to_string (include);
|
||
gdb_printf (" (%s %s)\n",
|
||
"(struct compunit_symtab *)",
|
||
addr);
|
||
}
|
||
gdb_printf (" )\n");
|
||
}
|
||
printed_compunit_symtab_start = 1;
|
||
}
|
||
|
||
gdb_printf ("\t{ symtab %s ",
|
||
symtab_to_filename_for_display (symtab));
|
||
gdb_stdout->wrap_here (4);
|
||
gdb_printf ("((struct symtab *) %s)\n",
|
||
host_address_to_string (symtab));
|
||
gdb_printf ("\t fullname %s\n",
|
||
symtab->fullname != NULL
|
||
? symtab->fullname
|
||
: "(null)");
|
||
gdb_printf ("\t "
|
||
"linetable ((struct linetable *) %s)\n",
|
||
host_address_to_string
|
||
(symtab->linetable ()));
|
||
gdb_printf ("\t}\n");
|
||
}
|
||
}
|
||
|
||
if (printed_compunit_symtab_start)
|
||
gdb_printf (" }\n");
|
||
}
|
||
|
||
if (printed_objfile_start)
|
||
gdb_printf ("}\n");
|
||
}
|
||
}
|
||
|
||
/* Check consistency of symtabs.
|
||
An example of what this checks for is NULL blockvectors.
|
||
They can happen if there's a bug during debug info reading.
|
||
GDB assumes they are always non-NULL.
|
||
|
||
Note: This does not check for psymtab vs symtab consistency.
|
||
Use "maint check-psymtabs" for that. */
|
||
|
||
static void
|
||
maintenance_check_symtabs (const char *ignore, int from_tty)
|
||
{
|
||
for (struct program_space *pspace : program_spaces)
|
||
for (objfile *objfile : pspace->objfiles ())
|
||
{
|
||
/* We don't want to print anything for this objfile until we
|
||
actually find something worth printing. */
|
||
int printed_objfile_start = 0;
|
||
|
||
for (compunit_symtab *cust : objfile->compunits ())
|
||
{
|
||
int found_something = 0;
|
||
struct symtab *symtab = cust->primary_filetab ();
|
||
|
||
QUIT;
|
||
|
||
if (cust->blockvector () == NULL)
|
||
found_something = 1;
|
||
/* Add more checks here. */
|
||
|
||
if (found_something)
|
||
{
|
||
if (! printed_objfile_start)
|
||
{
|
||
gdb_printf ("{ objfile %s ", objfile_name (objfile));
|
||
gdb_stdout->wrap_here (2);
|
||
gdb_printf ("((struct objfile *) %s)\n",
|
||
host_address_to_string (objfile));
|
||
printed_objfile_start = 1;
|
||
}
|
||
gdb_printf (" { symtab %s\n",
|
||
symtab_to_filename_for_display (symtab));
|
||
if (cust->blockvector () == NULL)
|
||
gdb_printf (" NULL blockvector\n");
|
||
gdb_printf (" }\n");
|
||
}
|
||
}
|
||
|
||
if (printed_objfile_start)
|
||
gdb_printf ("}\n");
|
||
}
|
||
}
|
||
|
||
/* Expand all symbol tables whose name matches an optional regexp. */
|
||
|
||
static void
|
||
maintenance_expand_symtabs (const char *args, int from_tty)
|
||
{
|
||
char *regexp = NULL;
|
||
|
||
/* We use buildargv here so that we handle spaces in the regexp
|
||
in a way that allows adding more arguments later. */
|
||
gdb_argv argv (args);
|
||
|
||
if (argv != NULL)
|
||
{
|
||
if (argv[0] != NULL)
|
||
{
|
||
regexp = argv[0];
|
||
if (argv[1] != NULL)
|
||
error (_("Extra arguments after regexp."));
|
||
}
|
||
}
|
||
|
||
if (regexp)
|
||
re_comp (regexp);
|
||
|
||
for (struct program_space *pspace : program_spaces)
|
||
for (objfile *objfile : pspace->objfiles ())
|
||
objfile->expand_symtabs_matching
|
||
([&] (const char *filename, bool basenames)
|
||
{
|
||
/* KISS: Only apply the regexp to the complete file name. */
|
||
return (!basenames
|
||
&& (regexp == NULL || re_exec (filename)));
|
||
},
|
||
NULL,
|
||
NULL,
|
||
NULL,
|
||
SEARCH_GLOBAL_BLOCK | SEARCH_STATIC_BLOCK,
|
||
UNDEF_DOMAIN,
|
||
ALL_DOMAIN);
|
||
}
|
||
|
||
|
||
/* Return the nexting depth of a block within other blocks in its symtab. */
|
||
|
||
static int
|
||
block_depth (const struct block *block)
|
||
{
|
||
int i = 0;
|
||
|
||
while ((block = BLOCK_SUPERBLOCK (block)) != NULL)
|
||
{
|
||
i++;
|
||
}
|
||
return i;
|
||
}
|
||
|
||
|
||
/* Used by MAINTENANCE_INFO_LINE_TABLES to print the information about a
|
||
single line table. */
|
||
|
||
static int
|
||
maintenance_print_one_line_table (struct symtab *symtab, void *data)
|
||
{
|
||
struct linetable *linetable;
|
||
struct objfile *objfile;
|
||
|
||
objfile = symtab->compunit ()->objfile ();
|
||
gdb_printf (_("objfile: %ps ((struct objfile *) %s)\n"),
|
||
styled_string (file_name_style.style (),
|
||
objfile_name (objfile)),
|
||
host_address_to_string (objfile));
|
||
gdb_printf (_("compunit_symtab: %s ((struct compunit_symtab *) %s)\n"),
|
||
symtab->compunit ()->name,
|
||
host_address_to_string (symtab->compunit ()));
|
||
gdb_printf (_("symtab: %ps ((struct symtab *) %s)\n"),
|
||
styled_string (file_name_style.style (),
|
||
symtab_to_fullname (symtab)),
|
||
host_address_to_string (symtab));
|
||
linetable = symtab->linetable ();
|
||
gdb_printf (_("linetable: ((struct linetable *) %s):\n"),
|
||
host_address_to_string (linetable));
|
||
|
||
if (linetable == NULL)
|
||
gdb_printf (_("No line table.\n"));
|
||
else if (linetable->nitems <= 0)
|
||
gdb_printf (_("Line table has no lines.\n"));
|
||
else
|
||
{
|
||
/* Leave space for 6 digits of index and line number. After that the
|
||
tables will just not format as well. */
|
||
struct ui_out *uiout = current_uiout;
|
||
ui_out_emit_table table_emitter (uiout, 5, -1, "line-table");
|
||
uiout->table_header (6, ui_left, "index", _("INDEX"));
|
||
uiout->table_header (6, ui_left, "line", _("LINE"));
|
||
uiout->table_header (18, ui_left, "address", _("ADDRESS"));
|
||
uiout->table_header (7, ui_left, "is-stmt", _("IS-STMT"));
|
||
uiout->table_header (12, ui_left, "prologue-end", _("PROLOGUE-END"));
|
||
uiout->table_body ();
|
||
|
||
for (int i = 0; i < linetable->nitems; ++i)
|
||
{
|
||
struct linetable_entry *item;
|
||
|
||
item = &linetable->item [i];
|
||
ui_out_emit_tuple tuple_emitter (uiout, nullptr);
|
||
uiout->field_signed ("index", i);
|
||
if (item->line > 0)
|
||
uiout->field_signed ("line", item->line);
|
||
else
|
||
uiout->field_string ("line", _("END"));
|
||
uiout->field_core_addr ("address", objfile->arch (),
|
||
item->pc);
|
||
uiout->field_string ("is-stmt", item->is_stmt ? "Y" : "");
|
||
uiout->field_string ("prologue-end", item->prologue_end ? "Y" : "");
|
||
uiout->text ("\n");
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Implement the 'maint info line-table' command. */
|
||
|
||
static void
|
||
maintenance_info_line_tables (const char *regexp, int from_tty)
|
||
{
|
||
dont_repeat ();
|
||
|
||
if (regexp != NULL)
|
||
re_comp (regexp);
|
||
|
||
for (struct program_space *pspace : program_spaces)
|
||
for (objfile *objfile : pspace->objfiles ())
|
||
{
|
||
for (compunit_symtab *cust : objfile->compunits ())
|
||
{
|
||
for (symtab *symtab : cust->filetabs ())
|
||
{
|
||
QUIT;
|
||
|
||
if (regexp == NULL
|
||
|| re_exec (symtab_to_filename_for_display (symtab)))
|
||
{
|
||
maintenance_print_one_line_table (symtab, NULL);
|
||
gdb_printf ("\n");
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Do early runtime initializations. */
|
||
|
||
void _initialize_symmisc ();
|
||
void
|
||
_initialize_symmisc ()
|
||
{
|
||
add_cmd ("symbols", class_maintenance, maintenance_print_symbols, _("\
|
||
Print dump of current symbol definitions.\n\
|
||
Usage: mt print symbols [-pc ADDRESS] [--] [OUTFILE]\n\
|
||
mt print symbols [-objfile OBJFILE] [-source SOURCE] [--] [OUTFILE]\n\
|
||
Entries in the full 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 ("msymbols", class_maintenance, maintenance_print_msymbols, _("\
|
||
Print dump of current minimal symbol definitions.\n\
|
||
Usage: mt print msymbols [-objfile OBJFILE] [--] [OUTFILE]\n\
|
||
Entries in the minimal symbol table are dumped to file OUTFILE,\n\
|
||
or the terminal if OUTFILE is unspecified.\n\
|
||
If OBJFILE is provided, dump only that file's minimal symbols."),
|
||
&maintenanceprintlist);
|
||
|
||
add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles,
|
||
_("Print dump of current object file definitions.\n\
|
||
With an argument REGEXP, list the object files with matching names."),
|
||
&maintenanceprintlist);
|
||
|
||
add_cmd ("symtabs", class_maintenance, maintenance_info_symtabs, _("\
|
||
List the full symbol tables for all object files.\n\
|
||
This does not include information about individual symbols, blocks, or\n\
|
||
linetables --- just the symbol table structures themselves.\n\
|
||
With an argument REGEXP, list the symbol tables with matching names."),
|
||
&maintenanceinfolist);
|
||
|
||
add_cmd ("line-table", class_maintenance, maintenance_info_line_tables, _("\
|
||
List the contents of all line tables, from all symbol tables.\n\
|
||
With an argument REGEXP, list just the line tables for the symbol\n\
|
||
tables with matching names."),
|
||
&maintenanceinfolist);
|
||
|
||
add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs,
|
||
_("\
|
||
Check consistency of currently expanded symtabs."),
|
||
&maintenancelist);
|
||
|
||
add_cmd ("expand-symtabs", class_maintenance, maintenance_expand_symtabs,
|
||
_("Expand symbol tables.\n\
|
||
With an argument REGEXP, only expand the symbol tables with matching names."),
|
||
&maintenancelist);
|
||
}
|