From: "Puputti, Matti" <matti.puputti@intel.com>
To: "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>
Subject: RE: [PING] [PATCH v3 1/1] gdb, infcmd: Support jump command with same line in multiple symtabs
Date: Fri, 28 Apr 2023 07:04:54 +0000 [thread overview]
Message-ID: <SN6PR11MB30860689F2AD6B214F3B9A89ED6B9@SN6PR11MB3086.namprd11.prod.outlook.com> (raw)
In-Reply-To: <SN6PR11MB3086469C41E843FFED82FC76ED609@SN6PR11MB3086.namprd11.prod.outlook.com>
*Ping* v2
> -----Original Message-----
> From: Puputti, Matti
> Sent: Friday, April 21, 2023 9:25 AM
> To: 'gdb-patches@sourceware.org' <gdb-patches@sourceware.org>
> Subject: RE: [PATCH v3 1/1] gdb, infcmd: Support jump command with same line
> in multiple symtabs
>
> *Ping*
> Kindly asking for review.
>
> Br,
> Matti Puputti
>
> Patch 1: https://sourceware.org/pipermail/gdb-patches/2023-
> March/197737.html
> Bruno Larsen's comments on Path 1: https://sourceware.org/pipermail/gdb-
> patches/2023-April/198859.html
> Patch 2: https://sourceware.org/pipermail/gdb-patches/2023-April/198884.html
> Bruno Larsen's comments on Patch 2: https://sourceware.org/pipermail/gdb-
> patches/2023-April/198909.html
> Patch 3: https://sourceware.org/pipermail/gdb-patches/2023-April/198912.html
>
> > -----Original Message-----
> > From: Gdb-patches <gdb-patches-
> > bounces+matti.puputti=intel.com@sourceware.org> On Behalf Of Matti
> > Puputti via Gdb-patches
> > Sent: Monday, April 17, 2023 1:33 PM
> > To: gdb-patches@sourceware.org
> > Cc: blarsen@redhat.com
> > Subject: [PATCH v3 1/1] gdb, infcmd: Support jump command with same line
> > in multiple symtabs
> >
> > If a header file defining a static function is included in multiple source
> > files, each calling the function, and GDB is asked to jump to a line inside
> > that function, there would be multiple locations matching the target. The
> > solution in this commit is to select the location in the current symtab.
> > ---
> > gdb/infcmd.c | 14 ++++-
> > .../gdb.base/jump_multiple_objfiles.c | 30 ++++++++++
> > .../gdb.base/jump_multiple_objfiles.exp | 57 +++++++++++++++++++
> > .../gdb.base/jump_multiple_objfiles.h | 30 ++++++++++
> > .../gdb.base/jump_multiple_objfiles_foo.c | 24 ++++++++
> > 5 files changed, 154 insertions(+), 1 deletion(-)
> > create mode 100755 gdb/testsuite/gdb.base/jump_multiple_objfiles.c
> > create mode 100755 gdb/testsuite/gdb.base/jump_multiple_objfiles.exp
> > create mode 100755 gdb/testsuite/gdb.base/jump_multiple_objfiles.h
> > create mode 100755 gdb/testsuite/gdb.base/jump_multiple_objfiles_foo.c
> >
> > diff --git a/gdb/infcmd.c b/gdb/infcmd.c
> > index 103899432f7..3e7fdb374a4 100644
> > --- a/gdb/infcmd.c
> > +++ b/gdb/infcmd.c
> > @@ -1079,7 +1079,19 @@ jump_command (const char *arg, int from_tty)
> > std::vector<symtab_and_line> sals
> > = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE);
> > if (sals.size () != 1)
> > - error (_("Unreasonable jump request"));
> > + {
> > + /* If multiple sal-objects were found, try dropping those that aren't
> > + from the current symtab. */
> > + sals.erase (std::remove_if (sals.begin (), sals.end (),
> > + [] (symtab_and_line &sal)
> > + {
> > + struct symtab_and_line cursal
> > + = get_current_source_symtab_and_line ();
> > + return sal.symtab != cursal.symtab;
> > + }), sals.end ());
> > + if (sals.size () != 1)
> > + error (_("Unreasonable jump request"));
> > + }
> >
> > symtab_and_line &sal = sals[0];
> >
> > diff --git a/gdb/testsuite/gdb.base/jump_multiple_objfiles.c
> > b/gdb/testsuite/gdb.base/jump_multiple_objfiles.c
> > new file mode 100755
> > index 00000000000..b54eede9eb1
> > --- /dev/null
> > +++ b/gdb/testsuite/gdb.base/jump_multiple_objfiles.c
> > @@ -0,0 +1,30 @@
> > +/* This testcase is part of GDB, the GNU debugger.
> > +
> > + Copyright 2021-2023 Free Software Foundation, Inc.
> > +
> > + This program is free software; you can redistribute it and/or modify
> > + it under the terms of the GNU General Public License as published by
> > + the Free Software Foundation; either version 3 of the License, or
> > + (at your option) any later version.
> > +
> > + This program is distributed in the hope that it will be useful,
> > + but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + GNU General Public License for more details.
> > +
> > + You should have received a copy of the GNU General Public License
> > + along with this program. If not, see <http://www.gnu.org/licenses/>. */
> > +
> > +#include "jump_multiple_objfiles.h"
> > +
> > +extern int foo (int n);
> > +
> > +
> > +int
> > +main ()
> > +{
> > + int n = foo (1);
> > + bar (n);
> > +
> > + return 0;
> > +}
> > diff --git a/gdb/testsuite/gdb.base/jump_multiple_objfiles.exp
> > b/gdb/testsuite/gdb.base/jump_multiple_objfiles.exp
> > new file mode 100755
> > index 00000000000..56bbc21c92e
> > --- /dev/null
> > +++ b/gdb/testsuite/gdb.base/jump_multiple_objfiles.exp
> > @@ -0,0 +1,57 @@
> > +# Copyright 2021-2023 Free Software Foundation, Inc.
> > +
> > +# This program is free software; you can redistribute it and/or modify
> > +# it under the terms of the GNU General Public License as published by
> > +# the Free Software Foundation; either version 3 of the License, or
> > +# (at your option) any later version.
> > +#
> > +# This program is distributed in the hope that it will be useful,
> > +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> > +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > +# GNU General Public License for more details.
> > +#
> > +# You should have received a copy of the GNU General Public License
> > +# along with this program. If not, see <http://www.gnu.org/licenses/>. */
> > +#
> > +# Tests GDBs support for jump, when the source line is in multiple
> > +# object files.
> > +
> > +
> > +standard_testfile .c
> > +set srcfile2 jump_multiple_objfiles_foo.c
> > +set srcfile3 jump_multiple_objfiles.h
> > +
> > +
> > +if { [prepare_for_testing "failed to prepare" $testfile \
> > + [list ${srcfile} ${srcfile2}]] } {
> > + return -1
> > +}
> > +
> > +if { ![runto_main] } {
> > + perror "couldn't run to breakpoint"
> > + return -1
> > +}
> > +
> > +
> > +set bar_first_line [gdb_get_line_number "bar-first-line" ${srcfile3}]
> > +set bar_middle_line [gdb_get_line_number "bar-middle-line" ${srcfile3}]
> > +set bar_last_line [gdb_get_line_number "bar-last-line" ${srcfile3}]
> > +
> > +
> > +# Set breakpoints in the function bar. Executable has two object files,
> > +# and both have a copy of the same source lines. Therefore breakpoints
> > +# will have two locations.
> > +gdb_breakpoint "${srcfile3}:${bar_first_line}"
> > +gdb_breakpoint "${srcfile3}:${bar_last_line}"
> > +
> > +# Run to the breakpoint in bar.
> > +gdb_continue_to_breakpoint "bar_first_line" \
> > + ".*${srcfile3}:${bar_first_line}.*"
> > +
> > +# Jump within the function. Debugger shall be able to jump, even if the
> > +# target line is in two different object files. After jump, we will hit
> > +# the breakpoint at the last line of bar.
> > +gdb_test "jump ${bar_middle_line}" [multi_line \
> > + "Continuing at ($hex).*" \
> > + "Breakpoint ${decimal}.* at .*${srcfile3}:${bar_last_line}.*"] \
> > + "Jump within the objectfile"
> > diff --git a/gdb/testsuite/gdb.base/jump_multiple_objfiles.h
> > b/gdb/testsuite/gdb.base/jump_multiple_objfiles.h
> > new file mode 100755
> > index 00000000000..0a3815e1808
> > --- /dev/null
> > +++ b/gdb/testsuite/gdb.base/jump_multiple_objfiles.h
> > @@ -0,0 +1,30 @@
> > +/* Copyright (C) 2021-2023 Free Software Foundation, Inc.
> > +
> > + This file is part of GDB.
> > +
> > + This program is free software; you can redistribute it and/or modify
> > + it under the terms of the GNU General Public License as published by
> > + the Free Software Foundation; either version 3 of the License, or
> > + (at your option) any later version.
> > +
> > + This program is distributed in the hope that it will be useful,
> > + but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + GNU General Public License for more details.
> > +
> > + You should have received a copy of the GNU General Public License
> > + along with this program. If not, see <http://www.gnu.org/licenses/>. */
> > +
> > +#ifndef JUMP_MULTIPLE_OBJFILES_H
> > +#define JUMP_MULTIPLE_OBJFILES_H
> > +
> > +static int
> > +bar (int n)
> > +{
> > + int retval = n;
> > + retval += 1; /* bar-first-line */
> > + retval *= -1; /* bar-middle-line */
> > + return retval; /* bar-last-line */
> > +}
> > +
> > +#endif /* JUMP_MULTIPLE_OBJFILES_H */
> > diff --git a/gdb/testsuite/gdb.base/jump_multiple_objfiles_foo.c
> > b/gdb/testsuite/gdb.base/jump_multiple_objfiles_foo.c
> > new file mode 100755
> > index 00000000000..16863c8594b
> > --- /dev/null
> > +++ b/gdb/testsuite/gdb.base/jump_multiple_objfiles_foo.c
> > @@ -0,0 +1,24 @@
> > +/* This testcase is part of GDB, the GNU debugger.
> > +
> > + Copyright 2021-2023 Free Software Foundation, Inc.
> > +
> > + This program is free software; you can redistribute it and/or modify
> > + it under the terms of the GNU General Public License as published by
> > + the Free Software Foundation; either version 3 of the License, or
> > + (at your option) any later version.
> > +
> > + This program is distributed in the hope that it will be useful,
> > + but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + GNU General Public License for more details.
> > +
> > + You should have received a copy of the GNU General Public License
> > + along with this program. If not, see <http://www.gnu.org/licenses/>. */
> > +
> > +#include "jump_multiple_objfiles.h"
> > +
> > +int
> > +foo (int n)
> > +{
> > + return bar (n);
> > +}
> > --
> > 2.25.1
> >
> > Intel Deutschland GmbH
> > Registered Address: Am Campeon 10, 85579 Neubiberg, Germany
> > Tel: +49 89 99 8853-0, www.intel.de <http://www.intel.de>
> > Managing Directors: Christin Eisenschmid, Sharon Heck, Tiffany Doon Silva
> > Chairperson of the Supervisory Board: Nicole Lau
> > Registered Office: Munich
> > Commercial Register: Amtsgericht Muenchen HRB 186928
Intel Deutschland GmbH
Registered Address: Am Campeon 10, 85579 Neubiberg, Germany
Tel: +49 89 99 8853-0, www.intel.de <http://www.intel.de>
Managing Directors: Christin Eisenschmid, Sharon Heck, Tiffany Doon Silva
Chairperson of the Supervisory Board: Nicole Lau
Registered Office: Munich
Commercial Register: Amtsgericht Muenchen HRB 186928
next prev parent reply other threads:[~2023-04-28 7:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-17 11:32 Matti Puputti
2023-04-21 7:24 ` Puputti, Matti
2023-04-28 7:04 ` Puputti, Matti [this message]
2023-04-28 14:39 ` Andrew Burgess
2023-05-02 13:40 ` Puputti, Matti
2023-05-02 14:54 ` Andrew Burgess
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