2014-01-01 03:54:24 +00:00
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# Copyright 2011-2014 Free Software Foundation, Inc.
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2011-12-16 20:02:05 +00:00
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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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#
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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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#
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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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# This file is a dejagnu "board file" and is used to run the testsuite
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# natively with gdbserver using stdio for comms.
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#
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# To use this file:
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# bash$ cd ${build_dir}/gdb
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# bash$ make check RUNTESTFLAGS="--target_board=native-stdio-gdbserver"
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load_generic_config "gdbserver"
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2013-07-07 08:52:39 +00:00
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load_board_description "gdbserver-base"
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2011-12-16 20:02:05 +00:00
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# This gdbserver can only run a process once per session.
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set_board_info gdb,do_reload_on_run 1
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# There's no support for argument-passing (yet).
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set_board_info noargs 1
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2014-04-16 17:40:41 +00:00
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# Hack the host,port to pass our peculiar remote connection string.
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set_board_info sockethost ""
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set_board_info gdb,socketport "stdio"
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2011-12-16 20:02:05 +00:00
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set_board_info gdb,get_remote_address ${board}_get_remote_address
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2014-04-16 17:40:41 +00:00
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set_board_info gdbserver,get_comm_port ${board}_get_comm_port
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2011-12-16 20:02:05 +00:00
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set_board_info use_gdb_stub 1
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Teach the testsuite that GDBserver reliably reports program exits.
Running catch-syscall.exp against a gdbserver that actually supports
it, we get:
FAIL: gdb.base/catch-syscall.exp: continue until exit (the program exited)
FAIL: gdb.base/catch-syscall.exp: continue until exit (the program exited)
FAIL: gdb.base/catch-syscall.exp: continue until exit (the program exited)
FAIL: gdb.base/catch-syscall.exp: continue until exit at catch syscall with unused syscall (mlock) (the program exited)
FAIL: gdb.base/catch-syscall.exp: continue until exit (the program exited)
The fail pattern is:
Catchpoint 2 (call to syscall exit_group), 0x000000323d4baa29 in _exit () from /lib64/libc.so.6
(gdb) PASS: gdb.base/catch-syscall.exp: program has called exit_group
delete breakpoints
Delete all breakpoints? (y or n) y
(gdb) info breakpoints
No breakpoints or watchpoints.
(gdb) break exit
Breakpoint 3 at 0x323d438bf0
(gdb) continue
Continuing.
[Inferior 1 (process 21081) exited normally]
That "break exit" + "continue" comes from:
> # gdb_continue_to_end:
> # The case where the target uses stubs has to be handled specially. If a
> # stub is used, we set a breakpoint at exit because we cannot rely on
> # exit() behavior of a remote target.
> #
The native-gdbserver.exp board, used to test against gdbserver in
"target remote" mode, triggers that case ($use_gdb_stub is true). So
gdb_continue_to_end doesn't work for catch-syscall.exp as here we
catch the exit_group and continue from that, expecting to see a real
program exit. I was about to post a patch that changes
catch-syscall.exp to call a new function that just always does what
gdb_continue_to_end does in the !$use_gdb_stub case. But, since
GDBserver doesn't really need this, in the end I thought it better to
teach the testsuite that there are stubs that know how to report
program exits, by adding a new "exit_is_reliable" board variable that
then gdb_continue_to_end checks.
Tested on x86_64 Fedora 17, native and gdbserver.
gdb/testsuite/
2013-10-02 Pedro Alves <palves@redhat.com>
* README (Board Settings): Document "exit_is_reliable".
* lib/gdb.exp (gdb_continue_to_end): Check whether the board says
running to exit reliably reports program exits.
* boards/native-gdbserver.exp: Set exit_is_reliable in the board
info.
* boards/native-stdio-gdbserver.exp: Likewise.
2013-10-02 11:44:20 +00:00
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set_board_info exit_is_reliable 1
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2011-12-16 20:02:05 +00:00
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# We will be using the standard GDB remote protocol.
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set_board_info gdb_protocol "remote"
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# Used to pass a value between ${board}_spawn and ${board}_get_remote_address.
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set stdio_gdbserver_command "--unset--"
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proc ${board}_get_remote_address { host port } {
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global stdio_gdbserver_command
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2014-04-16 17:40:41 +00:00
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return "| $stdio_gdbserver_command"
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2011-12-16 20:02:05 +00:00
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}
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2014-04-16 17:40:41 +00:00
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proc ${board}_get_comm_port { port } {
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return $port
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2011-12-16 20:02:05 +00:00
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}
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proc ${board}_spawn { board cmd } {
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global board_info
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verbose -log "${board}_spawn: $board $cmd"
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2014-04-16 17:40:41 +00:00
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# Save the command to start gdbserver for later retrieval by
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2011-12-16 20:02:05 +00:00
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# ${board}_get_remote_address.
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global stdio_gdbserver_command
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2014-04-16 17:40:41 +00:00
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set stdio_gdbserver_command $cmd
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2011-12-16 20:02:05 +00:00
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set baseboard [lindex [split $board "/"] 0]
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# We don't spawn gdbserver here, that is done by the subsequent
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# "target remote | ..." command.
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set board_info($baseboard,isremote) 0
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# Pretend as if we've started gdbserver, provide the test harness
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# with what it's waiting for.
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set result [remote_spawn $board "echo Listening on stdio"]
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set board_info($baseboard,isremote) 1
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return $result
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}
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2012-06-22 07:45:57 +00:00
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proc ${board}_exec { hostname program args } {
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global board_info
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set baseboard [lindex [split $hostname "/"] 0]
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set board_info($baseboard,isremote) 0
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set result [remote_exec $hostname $program $args]
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set board_info($baseboard,isremote) 1
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return $result
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}
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