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# Copyright 2014-2019 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 "file" doesn't leave stale breakpoints planted in the
# target.
standard_testfile
if {[build_executable "failed to prepare" $testfile $srcfile debug]} {
return -1
}
# Run the test proper. INITIAL_LOAD determines whether the program is
# initially loaded by the "file" command or by passing it to GDB on
# the command line. ALWAYS_INSERT determines whether always-inserted
# mode is on/off. BREAK_COMMAND is the break command being tested.
#
proc test_break { initial_load always_inserted break_command } {
global srcdir subdir binfile
global gdb_prompt hex
global GDBFLAGS
append prefix "$initial_load: "
append prefix "always-inserted $always_inserted: "
append prefix "$break_command"
with_test_prefix "$prefix" {
gdb_exit
set saved_gdbflags $GDBFLAGS
# See "used to behave differently" further below.
if { $initial_load == "file" } {
gdb_start
gdb_file_cmd $binfile
} else {
global last_loaded_file
# gdb_file_cmd sets this. This is what gdb_reload
# implementations use as binary.
set last_loaded_file $binfile
set GDBFLAGS "$GDBFLAGS $binfile"
gdb_start
}
gdb_reinitialize_dir $srcdir/$subdir
gdb_reload
set GDBFLAGS $saved_gdbflags
if ![runto_main] then {
fail "can't run to main"
return
}
delete_breakpoints
gdb_test_no_output "set breakpoint always-inserted $always_inserted"
set test "$break_command foo"
gdb_test_multiple "$break_command foo" $test {
-re "No hardware breakpoint support in the target.*$gdb_prompt $" {
unsupported $test
return
}
-re "Hardware breakpoints used exceeds limit.*$gdb_prompt $" {
unsupported $test
return
}
-re "Cannot insert hardware breakpoint.*$gdb_prompt $" {
unsupported $test
return
}
-re ".*reakpoint .* at .*$gdb_prompt $" {
pass $test
}
}
# The breakpoint shouldn't be pending now.
gdb_test "info break" "y.*$hex.*in foo at.*" \
"breakpoint is not pending"
# Remove the file, while the breakpoint above is inserted in a
# function in the main objfile. GDB used to have a bug where
# it would mark the breakpoint as uninserted, but actually
# would leave it inserted in the target.
set test "file"
gdb_test_multiple "file" $test {
-re "Are you sure you want to change the file. .*y or n. $" {
send_gdb "y\n"
exp_continue
}
-re "Discard symbol table from `.*'? .y or n. $" {
send_gdb "y\n"
exp_continue
}
-re "No symbol file now\\.\r\n$gdb_prompt $" {
pass $test
}
}
# This test used to behave differently depending on whether
# the program was first loaded through "file PROGRAM" or "gdb
# PROGRAM".
set ws "\[ \t\]"
gdb_test "info break" "breakpoint${ws}+keep${ws}+n${ws}+$hex${ws}*" \
"breakpoint is disabled"
# Now delete the breakpoint from GDB's tables, to make sure
# GDB doesn't reinsert it, masking the bug (with the bug, on
# re-insert, GDB would fill the shadow buffer with a
# breakpoint instruction). Avoid delete_breakpoints as that
# doesn't record a pass/fail.
gdb_test "delete" "" "delete all breakpoints" \
"Delete all breakpoints.*y or n.*$" "y"
# Re-add symbols back.
set test "file \$binfile"
gdb_test_multiple "file $binfile" $test {
-re "Are you sure you want to change the file. .*y or n. $" {
send_gdb "y\n"
exp_continue
}
-re "Reading symbols from.*$gdb_prompt $" {
pass $test
}
}
# Run to another function now. With the bug, GDB would trip
# on a spurious trap at foo.
gdb_test "b bar" ".*reakpoint .* at .*"
gdb_test "continue" "Breakpoint .*, bar .*"
}
}
foreach initial_load { "cmdline" "file" } {
# While it doesn't trigger the original bug this is a regression
# test for, test with breakpoint always-inserted off for extra
# coverage.
foreach always_inserted { "off" "on" } {
test_break $initial_load $always_inserted "break"
if {![skip_hw_breakpoint_tests]} {
test_break $initial_load $always_inserted "hbreak"
}
}
}
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