gdb/
* infrun.c (follow_exec): Clear the stop_requested flag. * linux-nat.c (linux_handle_extended_wait) <PTRACE_EVENT_EXEC>: Add debug output. gdb/testsuite/ * gdb.mi/nsthrexec.c, gdb.mi/mi-nsthrexec.exp: New.
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parent
05056a8d5b
commit
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@ -1,3 +1,9 @@
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2009-05-27 Pedro Alves <pedro@codesourcery.com>
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* infrun.c (follow_exec): Clear the stop_requested flag.
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* linux-nat.c (linux_handle_extended_wait) <PTRACE_EVENT_EXEC>:
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Add debug output.
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2009-05-27 Aleksandar Ristovski <aristovski@qnx.com>
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* nto-procfs.c (get_regset): Pass correct pointer.
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@ -494,6 +494,14 @@ follow_exec (ptid_t pid, char *execd_pathname)
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th->step_range_start = 0;
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th->step_range_end = 0;
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/* The target reports the exec event to the main thread, even if
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some other thread does the exec, and even if the main thread was
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already stopped --- if debugging in non-stop mode, it's possible
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the user had the main thread held stopped in the previous image
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--- release it now. This is the same behavior as step-over-exec
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with scheduler-locking on in all-stop mode. */
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th->stop_requested = 0;
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/* What is this a.out's name? */
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printf_unfiltered (_("Executing new program: %s\n"), execd_pathname);
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@ -1892,6 +1892,11 @@ linux_handle_extended_wait (struct lwp_info *lp, int status,
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if (event == PTRACE_EVENT_EXEC)
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{
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if (debug_linux_nat)
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fprintf_unfiltered (gdb_stdlog,
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"LHEW: Got exec event from LWP %ld\n",
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GET_LWP (lp->ptid));
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ourstatus->kind = TARGET_WAITKIND_EXECD;
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ourstatus->value.execd_pathname
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= xstrdup (linux_child_pid_to_exec_file (pid));
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@ -1,3 +1,7 @@
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2009-05-27 Pedro Alves <pedro@codesourcery.com>
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* gdb.mi/nsthrexec.c, gdb.mi/mi-nsthrexec.exp: New.
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2009-05-24 Pedro Alves <pedro@codesourcery.com>
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* gdb.threads/fork-thread-pending.c: New.
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@ -0,0 +1,101 @@
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# Copyright 2009 Free Software Foundation, Inc.
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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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# Test that when a thread other than the main thread execs, and the
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# main thread was stopped due to user request, the new incarnation of
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# the main thread doesn't just silently stop at the first internal
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# breakpoint (usually the _dl_debug_state breakpoint).
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# No exec event support in the remote protocol.
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if { [is_remote target] } then {
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continue
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}
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load_lib mi-support.exp
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set MIFLAGS "-i=mi"
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gdb_exit
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if {[mi_gdb_start]} {
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continue
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}
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#
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# Start here
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#
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set testfile "nsthrexec"
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set srcfile "$testfile.c"
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set binfile "$objdir/$subdir/mi-$testfile"
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set options [list debug incdir=$objdir]
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if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $options] != "" } {
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return -1
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}
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mi_gdb_reinitialize_dir $srcdir/$subdir
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mi_gdb_load $binfile
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set supported 0
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send_gdb "-gdb-show non-stop\n"
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gdb_expect {
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-re ".*\\^done,value=\"off\",supported=\"(\[^\"\]+)\"\r\n$mi_gdb_prompt$" {
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if { $expect_out(1,string) == "1" } {
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set supported 1
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}
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}
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-re ".$mi_gdb_prompt$" {
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}
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}
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mi_gdb_test "-gdb-set non-stop 1" ".*"
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mi_gdb_test "-gdb-set target-async 1" ".*"
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detect_async
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if { [mi_run_to_main] < 0 } {
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perror "mi-nsthrexec.exp tests suppressed"
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continue
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}
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mi_create_breakpoint thread_execler 2 keep thread_execler .* .* .* \
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"breakpoint at thread_execler"
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# All threads should stop, except the main thread.
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mi_send_resuming_command "exec-continue --all" "resume all"
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mi_expect_stop "breakpoint-hit" "thread_execler" "\[^\n\]*" "$srcfile" \
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"\[0-9\]*" {"" "disp=\"keep\""} "stop at thread_execler"
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mi_check_thread_states \
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{"running" "stopped"} \
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"thread state, execler stopped, main running"
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mi_gdb_test "200-exec-interrupt --thread 1" "200\\^done" "interrupt main thread"
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mi_expect_interrupt "main thread interrupted"
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mi_check_thread_states {"stopped" "stopped"} "thread state, all stopped"
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# now that we know about all the threads, we can get rid of the breakpoints
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mi_delete_breakpoints
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mi_create_breakpoint main 3 keep main .* .* .* \
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"breakpoint at main"
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# Now resume the execler thread. Eventually, it execs.
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mi_send_resuming_command "exec-continue --thread 2" "resume execler thread"
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# Check that the main thread passes by the _dl_debug_state internal
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# breakpoint without silently stopping.
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mi_expect_stop "breakpoint-hit" "main" "\[^\n\]*" "$srcfile" \
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"\[0-9\]*" {"" "disp=\"keep\""} "stop at main after exec"
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mi_gdb_exit
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@ -0,0 +1,48 @@
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/* This testcase is part of GDB, the GNU debugger.
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Copyright 2009 Free Software Foundation, Inc.
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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 <pthread.h>
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#include <unistd.h>
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#include <stdlib.h>
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static const char *image;
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void *
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thread_execler (void *arg)
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{
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/* Exec ourselves again. */
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if (execl (image, image, NULL) == -1)
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{
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perror ("execl");
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abort ();
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}
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return NULL;
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}
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int
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main (int argc, char **argv)
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{
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pthread_t thread;
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image = argv[0];
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pthread_create (&thread, NULL, thread_execler, NULL);
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pthread_join (thread, NULL);
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return 0;
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}
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