gdb/testsuite/gdb.base/frame-view.exp

# Copyright 2022-2024 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 the "frame view" family of commands.

standard_testfile

if { [build_executable "failed to prepare" \
	  ${testfile} ${srcfile} {debug pthreads}] } {
    return
}

# If WITH_PRETTY_PRINTER is true, load pretty printers for the function
# parameter types, in which we do an inferior call.  This is meant to test
# that the frame_info_ptr correctly reinflates frames created using
# "select-frame view".

proc test_select_frame_view { with_pretty_printer } {
    clean_restart $::binfile

    if { $with_pretty_printer } {
	require allow_python_tests
    }

    if { ![runto_main] } {
	return
    }

    if { $with_pretty_printer } {
	set remote_python_file \
	    [gdb_remote_download host "${::srcdir}/${::subdir}/${::testfile}.py"]
	gdb_test_no_output "source ${remote_python_file}" "load python file"
    }

    # Stop thread 2 at a baz.
    gdb_test "break baz"
    gdb_test "continue" "Thread 2.*hit Breakpoint $::decimal, baz .*"

    # Grab the stack pointer and pc of thread 2's frame.
    set frame_sp ""
    set frame_pc ""

    gdb_test_multiple "info frame" "" {
	-re -wrap ".*frame at ($::hex):.*" {
	    set frame_sp $expect_out(1,string)
	    pass $gdb_test_name
	}
    }

    gdb_test_multiple "print/x \$pc" "" {
	-re -wrap " = ($::hex)" {
	    set frame_pc $expect_out(1,string)
	    pass $gdb_test_name
	}
    }

    if { $frame_sp == "" || $frame_pc == "" } {
	# Something must have failed and logged a failure above.
	return
    }

    # Select thread 2's frame in thread 1.
    gdb_test "thread 1" "Switching to thread 1 .*"
    gdb_test_no_output "select-frame view $frame_sp $frame_pc" \
	"select thread 2 frame from thread 1"

    if { $with_pretty_printer } {
	# When the pretty printer does its infcall, it is done on the currently
	# selected thread, thread 1 here.  However, other threads are resumed
	# at the same time.  This causes thread 2 to exit during that infcall,
	# leading to this weirdness:
	#
	#     frame^M
	#     #0  baz (z=[Thread 0x7ffff7cc26c0 (LWP 417519) exited]^M
	#     hohoho) at /home/simark/src/binutils-gdb/gdb/testsuite/gdb.base/frame-view.c:35^M
	#     35        return z.n + 2;^M
	#
	# Avoid that by setting scheduler-locking on.
	gdb_test_no_output "set scheduler-locking on"

	set z1_pattern "hahaha"
	set z2_pattern "hohoho"
    } else {
	set z1_pattern "\\.\\.\\."
	set z2_pattern "\\.\\.\\."
    }

    # Verify that the "frame" command does not change the selected frame.
    # There used to be a bug where the "frame" command would lose the
    # selection of user-created frames.
    gdb_test "frame" "#0  baz \\(z1=$z1_pattern, z2=$z2_pattern\\).*" "frame"
    gdb_test "frame" "#0  baz \\(z1=$z1_pattern, z2=$z2_pattern\\).*" "frame again"
}

foreach_with_prefix with_pretty_printer {false true} {
    test_select_frame_view $with_pretty_printer
}