# Copyright (C) 2013-2021 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/>.

# This file is part of the GDB testsuite.  It tests Python-based
# frame-filters.

load_lib gdb-python.exp

standard_testfile

# We cannot use prepare_for_testing as we have to set the safe-patch
# to check objfile and progspace printers.
if {[build_executable $testfile.exp $testfile $srcfile debug] == -1} {
    return -1
}

# Start with a fresh gdb.
gdb_exit
gdb_start

# Skip all tests if Python scripting is not enabled.
if { [skip_python_tests] } { continue }

gdb_test "info frame-filter" \
    "No frame filters\\." \
    "info frame filter before loading filters"

# Make the -gdb.py script available to gdb, it is automagically loaded by gdb.
# Care is taken to put it in the same directory as the binary so that
# gdb will find it.
set remote_obj_python_file \
    [gdb_remote_download host ${srcdir}/${subdir}/${testfile}-gdb.py \
	 ${testfile}-gdb.py]

gdb_reinitialize_dir $srcdir/$subdir
gdb_test_no_output "set auto-load safe-path ${remote_obj_python_file}" \
    "set auto-load safe-path"
gdb_load ${binfile}
# Verify gdb loaded the script.
gdb_test "info auto-load python-scripts" "Yes.*${testfile}-gdb.py.*" \
    "Test auto-load had loaded python scripts"

if ![runto_main] then {
    perror "couldn't run to breakpoint"
    return
}
gdb_test_no_output "set python print-stack full" \
    "set python print-stack to full"

# Verify that 'bt', 'bt -no-filters' print the same info
# when there are no filters, no matching filters, or matching filters.
# In particular, no address should be printed, as the default for
# backtrace -frame-info is 'location', and the breakpoint we just hit
# is at the beginning of a line.
# Same tests done again after having loaded the filters.
gdb_test "bt 1" "#0  main .*" "bt 1, no filter loaded"
gdb_test "bt -no-filters 1" "#0  main .*" "bt -no-filters 1, no filter loaded"


# Load global frame-filters
set remote_python_file [gdb_remote_download host \
			    ${srcdir}/${subdir}/${testfile}.py]
gdb_test_no_output "source ${remote_python_file}" "load python file"

# Re-verify the frame-info printed once filters are loaded.
# For the first check, the Reverse filter is matching.
gdb_test "bt 1" "#0  niam .*" "bt 1, filters loaded"
gdb_test "bt -no-filters 1" "#0  main .*" "bt -no-filters 1, filters loaded"

gdb_breakpoint [gdb_get_line_number "Backtrace end breakpoint"]
gdb_breakpoint [gdb_get_line_number "Inner test breakpoint"]
gdb_continue_to_breakpoint "Inner test breakpoint"

# Test multiple local blocks.
gdb_test "bt full no-filters" \
    ".*#0.*end_func.*h = 9.*f = 42.*g = 19.*bar = $hex \"Inside block x2\".*d = 15.*e = 14.*foo = $hex \"Inside block\".*str = $hex \"The End\".*st2 = $hex \"Is Near\".*b = 12.*c = 5.*"
gdb_test "bt full" \
    ".*#0.*cnuf_dne.*h = 9.*f = 42.*g = 19.*bar = $hex \"Inside block x2\".*d = 15.*e = 14.*foo = $hex \"Inside block\".*str = $hex \"The End\".*st2 = $hex \"Is Near\".*b = 12.*c = 5.*" \
    "bt full with filters"

# Test pagination can be aborted even for frame filters.
gdb_test_no_output "set height 5" "pagination quit - set height limited"
foreach bttype [list "bt" "bt full"] {
    set test "pagination quit - $bttype"
    gdb_test_multiple "$bttype" $test {
	-re "$pagination_prompt$" {
	    pass $test
	}
    }
    gdb_test "q" "^q\r\nQuit" "pagination quit - $bttype - q"
}
gdb_test_no_output "set height unlimited" "pagination quit - set height unlimited"

gdb_continue_to_breakpoint "Backtrace end breakpoint"

# Test set/show
gdb_test "info frame-filter" \
    ".*900.*Yes.*Elider.*100.*Yes.*Reverse.*10.*.*No.*Object.*1.*" \
    "info frame filter before setting priority"
gdb_test "show frame-filter priority global Elider" \
    "Priority of filter 'Elider' in list 'global' is: 900" \
    "show frame-filter priority global Elider before setting"
gdb_test_no_output  "set frame-filter priority global Elider 1000" \
    "set frame-filter priotiy global Elider 1000"
gdb_test "show frame-filter priority global Elider" \
        "Priority of filter 'Elider' in list 'global' is: 1000" \
        "show frame-filter priority global Elider after setting"
gdb_test "info frame-filter" \
    ".*1000.*Yes.*Elider.*100.*Yes.*Reverse.*10.*.*No.*Object.*1.*" \
    "info frame filter after setting priority"
gdb_test "set frame-filter priority global NoSuchFilter 900" \
    "frame-filter 'NoSuchFilter' not found." \
    "set priority of a non-existing filter"

# Test enable/disable
gdb_test "info frame-filter" \
    ".*1000.*Yes.*Elider.*100.*Yes.*Reverse.*10.*.*No.*Object.*1.*" \
    "info frame filter before disable frame filter"
gdb_test_no_output  "disable frame-filter global Elider" \
    "disable frame-filter global Elider"
gdb_test "info frame-filter" \
    ".*1000.*No.*Elider.*100.*Yes.*Reverse.*10.*.*No.*Object.*1.*" \
    "info frame filter after disable frame filter"
gdb_test_no_output  "enable frame-filter global Elider" \
    "enable frame-filter global Elider"
gdb_test "info frame-filter" \
    ".*1000.*Yes.*Elider.*100.*Yes.*Reverse.*10.*.*No.*Object.*1.*" \
    "info frame filter after reenabling frame filter"
gdb_test "disable frame-filter global NoSuchFilter" \
    "frame-filter 'NoSuchFilter' not found." \
    "disable a non-existing filter"

# Test no-filters
gdb_test "bt no-filters" \
    ".*#0.*end_func.*#22.*in func1.*#27.*in main \\(\\).*"

# Test reverse
gdb_test "bt" \
    ".*#0.*cnuf_dne.*#22.*in 1cnuf.*#27.*in niam \\(\\).*" \
    "bt with frame filters"

# Disable Reverse
gdb_test_no_output "disable frame-filter global Reverse" \
    "disable frame-filter global Reverse"
gdb_test "bt" \
    ".*#0.*end_func.*#22.*in func1.*#27.*in main \\(\\).*" \
    "bt with frame-filter Reverse disabled"
gdb_test "bt -2" \
    ".*#26.*func5.*#27.*in main \\(\\).*" \
    "bt -2 with frame-filter Reverse disabled"
gdb_test "bt 3" \
    ".*#0.*end_func.*#1.*in funca \\(\\).*#2.*in funcb \\(j=10\\)\[^#\]*More stack frames follow.*" \
    "bt 3 with frame-filter Reverse disabled"
gdb_test "bt no-filter full" \
    ".*#0.*end_func.*str = $hex \"The End\".*st2 = $hex \"Is Near\".*b = 12.*c = 5.*#1.*in funca \\(\\).*#2.*in funcb \\(j=10\\).*bar = \{a = 42, b = 84\}.*" \
    "bt no-filters full with Reverse disabled"
gdb_test "bt full" \
    ".*#0.*end_func.*str = $hex \"The End\".*st2 = $hex \"Is Near\".*b = 12.*c = 5.*#1.*in funca \\(\\).*#2.*in funcb \\(j=10\\).*bar = \{a = 42, b = 84\}.*#22.*in func1 \\(\\).*#23.*in func2 \\(f=3\\).*elided = $hex \"Elided frame\".*fb = \{nothing = $hex \"Elided Foo Bar\", f = 84, s = 38\}.*bf = $hex.*" \
    "bt full with Reverse disabled"
gdb_test "bt full hide" \
    ".*#0.*end_func.*str = $hex \"The End\".*st2 = $hex \"Is Near\".*b = 12.*c = 5.*#1.*in funca \\(\\).*#2.*in funcb \\(j=10\\).*bar = \{a = 42, b = 84\}.*#22.*in func1 \\(\\)\[^#\]*#24.*in func3 \\(i=3\\).*" \
    "bt full hide with Reverse disabled"

# Re-enable Reverse
gdb_test_no_output "enable frame-filter global Reverse" \
    "re-enable frame-filter global Reverse"

# Test set print frame-arguments
# none
gdb_test_no_output "set print frame-arguments none" \
    "turn off frame arguments"
gdb_test "bt no-filter 1" \
    "#0.*end_func \\(foo=\.\.\., bar=\.\.\., fb=\.\.\., bf=\.\.\.\\) at .*py-framefilter.c.*" \
    "bt no-filter 1 no args"
gdb_test "bt 1" \
    "#0.*cnuf_dneThe End \\(foo=\.\.\., bar=\.\.\., fb=\.\.\., bf=\.\.\.\\) at .*py-framefilter.c.*" \
    "bt 1 no args"

# scalars
gdb_test_no_output "set print frame-arguments scalars" \
    "turn frame arguments to scalars only"
gdb_test "bt no-filter 1" \
    "#0.*end_func \\(foo=21, bar=$hex \"Param\", fb=$hex, bf=\.\.\.\\) at .*py-framefilter.c.*" \
    "bt no-filter 1 scalars"
gdb_test "bt 1" \
    "#0.*cnuf_dneThe End \\(foo=21, bar=$hex \"Param\", fb=$hex, bf=\.\.\.\\) at .*py-framefilter.c.*" \
    "bt 1 scalars"

# presence
gdb_test_no_output "set print frame-arguments presence" \
    "turn frame arguments to presence only"
gdb_test "bt no-filter 1" \
    "#0.*end_func \\(\.\.\.\\) at .*py-framefilter.c.*" \
    "bt no-filter 1 presence"
gdb_test "bt 1" \
    "#0.*cnuf_dneThe End \\(\.\.\.\\) at .*py-framefilter.c.*" \
    "bt 1 presence"

# Test set print frame-info, with only presence for args.
# short-location
gdb_test_no_output "set print frame-info short-location" \
    "frame-info short-location"
gdb_test "bt no-filter 1" \
     "#0.*end_func \\(\.\.\.\\)\r\n.*" \
    "bt no-filter 1 short-location"
gdb_test "bt 1" \
    "#0.*cnuf_dneThe End \\(\.\.\.\\)\r\n.*" \
    "bt 1 short-location"

# source-and-location
gdb_test_no_output "set print frame-info source-and-location" \
    "frame-info source-and-location"
gdb_test "bt no-filter 1" \
    "#0.*end_func \\(\.\.\.\\) at .*py-framefilter.c.*\r\n.*\[1-9\]\[0-9\]*.*" \
    "bt no-filter 1 source-and-location"
gdb_test "bt 1" \
    "#0.*cnuf_dneThe End \\(\.\.\.\\) at .*py-framefilter.c.*\r\n.*\[1-9\]\[0-9\]*.*" \
    "bt 1 source-and-location"

# source-line
gdb_test_no_output "set print frame-info source-line" \
    "frame-info source-line"
gdb_test "bt no-filter 1" \
    "\[1-9\]\[0-9\]*\[ \t\]*return; /\\* Backtrace end breakpoint \\*/.*" \
    "bt no-filter 1 source-line"
gdb_test "bt 1" \
    "\[1-9\]\[0-9\]*\[ \t\]*return; /\\* Backtrace end breakpoint \\*/.*" \
    "bt 1 source-line"

# set print frame-info back to auto.
gdb_test_no_output "set print frame-info auto" \
    "frame-info auto"

# all
gdb_test_no_output "set print frame-arguments all" \
    "turn on frame arguments"
gdb_test "bt no-filter 1" \
    "#0.*end_func \\(foo=21, bar=$hex \"Param\", fb=$hex, bf=\{nothing = $hex \"Foo Bar\", f = 42, s = 19\}\\) at .*py-framefilter.c.*" \
    "bt no-filter 1 all args"
gdb_test "bt 1" \
    "#0.*cnuf_dneThe End \\(foo=21, bar=$hex \"Param\", fb=$hex, bf=\{nothing = $hex \"Foo Bar\", f = 42, s = 19\}\\) at .*py-framefilter.c.*" \
    "bt 1 all args"

# set print address off
gdb_test_no_output "set print address off" \
    "Turn off address printing"
gdb_test "bt no-filter 1" \
    "#0  end_func \\(foo=21, bar=\"Param\", fb=, bf=\{nothing = \"Foo Bar\", f = 42, s = 19\}\\) at .*py-framefilter.c.*" \
    "bt no-filter 1 no address"
gdb_test "bt 1" \
    "#0  cnuf_dneThe End \\(foo=21, bar=\"Param\", fb=, bf=\{nothing = \"Foo Bar\", f = 42, s = 19\}\\) at .*py-framefilter.c.*" \
    "bt 1 no addresss"

gdb_test_no_output "set python print-stack message" \
    "Set python print-stack to message for Error filter"
gdb_test_no_output  "enable frame-filter global Error" \
    "enable frame-filter global Error"
set test "bt 1 with Error filter"
gdb_test_multiple "bt 1" $test {
    -re "Python Exception .*: whoops\r\n.*$gdb_prompt $" {
	pass $test
    }
}

# Now verify that we can see a quit.
gdb_test_no_output "python name_error = KeyboardInterrupt" \
    "Change ErrorFilter to throw KeyboardInterrupt"
gdb_test "bt 1" "Quit" "bt 1 with KeyboardInterrupt"


# Test with no debuginfo

# We cannot use prepare_for_testing as we have to set the safe-patch
# to check objfile and progspace printers.
if {[build_executable $testfile.exp $testfile $srcfile {nodebug}] == -1} {
    return -1
}

# Start with a fresh gdb.
gdb_exit
gdb_start

# Skip all tests if Python scripting is not enabled.
if { [skip_python_tests] } { continue }

# Make the -gdb.py script available to gdb, it is automagically loaded by gdb.
# Care is taken to put it in the same directory as the binary so that
# gdb will find it.
set remote_obj_python_file \
    [gdb_remote_download host ${srcdir}/${subdir}/${testfile}-gdb.py \
	 ${testfile}-gdb.py]

gdb_reinitialize_dir $srcdir/$subdir
gdb_test_no_output "set auto-load safe-path ${remote_obj_python_file}" \
    "set auto-load safe-path for no debug info"
gdb_load ${binfile}

# Verify gdb loaded the script.
gdb_test "info auto-load python-scripts" "Yes.*${testfile}-gdb.py.*" \
    "Set autoload path for no debug info tests"
if ![runto_main] then {
    perror "couldn't run to breakpoint"
    return
}

gdb_test_no_output "set python print-stack full" \
    "set python print-stack full for no debuginfo tests"

# Load global frame-filters
set remote_python_file [gdb_remote_download host \
			    ${srcdir}/${subdir}/${testfile}.py]
gdb_test_no_output "source ${remote_python_file}" \
    "load python file for no debuginfo tests"

# Disable Reverse
gdb_test_no_output "disable frame-filter global Reverse" \
    "disable frame-filter global Reverse for no debuginfo"
gdb_test "bt" \
    ".*#0..*in main \\(\\).*" \
    "bt for no debuginfo"
gdb_test "bt full" \
    ".*#0..*in main \\(\\).*" \
    "bt full for no debuginfo"
gdb_test "bt no-filters" \
    ".*#0..*in main \\(\\).*" \
    "bt no filters for no debuginfo"
gdb_test "bt no-filters full" \
    ".*#0..*in main \\(\\).*" \
    "bt no-filters full no debuginfo"