# Copyright 2022 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/>.

# Test that GDB/MI commands preserve user selected context when
# passed --thread and/or --frame.

load_lib mi-support.exp

standard_testfile

if {[build_executable $testfile.exp $testfile ${srcfile} "debug pthreads"] == -1} {
    untested "failed to compile"
    return -1
}

set main_break_line [gdb_get_line_number "main break line"]

set any "\[^\r\n\]*"

mi_clean_restart $binfile
mi_create_breakpoint "$srcfile:$main_break_line" "set breakpoint in main"
mi_run_cmd
mi_expect_stop "breakpoint-hit" "main" "" $srcfile $main_break_line \
	 { "" "disp=\"keep\"" } "run to breakpoint in main"

mi_gdb_test "thread" \
	".*Current thread is 1.*" \
	"info thread 1"

# Run -stack-info-depth in a different thread, the current thread
# should not change.

mi_gdb_test "-stack-info-depth --thread 3" \
    "\\^done,depth=.*" \
    "-stack-info-depth --thread 3"

mi_gdb_test "thread" \
    ".*Current thread is 1.*" \
    "info thread 2"

# Expect GDB to switch to thread 3.
mi_gdb_test "-thread-select 3" \
    "\\^done,${any}new-thread-id=\"3\"${any}" \
    "-thread-select 3"

mi_gdb_test "thread" \
    ".*Current thread is 3.*" \
    "info thread 3"

# Expect GDB to switch to thread 1.
mi_gdb_test "-thread-select --thread 2 1" \
    "\\^done,${any}new-thread-id=\"1\"${any}" \
    "-thread-select --thread 2 1"

mi_gdb_test "thread" \
    ".*Current thread is 1.*" \
    "info thread 4"

# Expect GDB to switch to thread 2.
mi_gdb_test "-thread-select --thread 2 2" \
    "\\^done,.*" \
    "-thread-select --thread 2 2"

mi_gdb_test "thread" \
    ".*Current thread is 2.*" \
    "info thread 5"

# Check we're in frame 0.
mi_gdb_test "frame" \
    ".*#0  .*child_sub_function .*" \
    "frame 1"

# Ask about a different frame in the current thread, the current frame
# should not change.
mi_gdb_test "-stack-info-frame --thread 2 --frame 1" \
    "\\^done,frame=\{level=\"1\".*" \
    "-stack-info-frame 1"

mi_gdb_test "thread" \
    ".*Current thread is 2.*" \
    "info thread 6"

mi_gdb_test "frame" \
    ".*#0  .*child_sub_function.*" \
    "frame 2"


# Ask about a different frame in a different thread.  After this the
# current thread and frame should not have changed.
mi_gdb_test "-stack-info-frame --thread 3 --frame 1" \
    "\\^done,frame=\{level=\"1\".*" \
    "-stack-info-frame 2"

mi_gdb_test "thread" \
    ".*Current thread is 2.*" \
    "info thread 7"

mi_gdb_test "frame" \
    ".*#0  .*child_sub_function.*" \
    "frame 3"

# Select a different frame in the current thread.  Despite the use of
# the --frame option, we do expect the currently selected frame to
# change.
mi_gdb_test "-stack-select-frame --thread 2 --frame 0 1" \
    "\\^done" \
    "--stack-select-frame 1"

mi_gdb_test "thread" \
    ".*Current thread is 2.*" \
    "info thread 8"

mi_gdb_test "frame" \
    ".*#1  .*child_function.*" \
    "frame 4"

# Similar to the previous test, but this time the --frame option is
# the same as the frame we are selecting.  We still expect GDB to
# update the currently selected frame.
mi_gdb_test "-stack-select-frame --thread 2 --frame 2 2" \
    "\\^done" \
    "--stack-select-frame 2"

mi_gdb_test "thread" \
    ".*Current thread is 2.*" \
    "info thread 9"

mi_gdb_test "frame" \
    ".*#2  0x.*" \
    "frame 5"

# Now select a frame in a different thread.  We expect both the
# currently selected thread, and the currently selected frame to be
# updated.
mi_gdb_test "-stack-select-frame --thread 1 --frame 0 0" \
    "\\^done" \
    "--stack-select-frame 3"

mi_gdb_test "thread" \
    ".*Current thread is 1.*" \
    "info thread 10"

mi_gdb_test "frame" \
    ".*#0  main.*" \
    "frame 6"