gdb/testsuite/gdb.base/breakpoint-shadow.exp

# Copyright 2008-2021 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/>.

standard_testfile

if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
    return -1
}

# We need to start the inferior to place the breakpoints in the memory at all.
if ![runto_main] {
    return -1
}

# The default "auto" mode removes all the breakpoints when we stop (and not
# running the nonstop mode).  We would not be able to test the shadow.
gdb_test_no_output "set breakpoint always-inserted on"
gdb_test "show breakpoint always-inserted" "Always inserted breakpoint mode is on."

set match "\nDump of assembler code for function main:\r\n(.*)End of assembler dump.\r\n$gdb_prompt $"

set test "disassembly without breakpoints"
gdb_test_multiple "disass main" $test {
    -re $match {
    	set orig $expect_out(1,string)
	pass $test
    }
}

gdb_test "b [gdb_get_line_number "break-first"]" "Breakpoint \[0-9\] at .*" "first breakpoint placed"
gdb_test "b [gdb_get_line_number "break-second"]" "Breakpoint \[0-9\] at .*" "second breakpoint placed"

# Disassemble main, and compare the output to the original output
# before breakpoints were inserted.  TEST is used as test message.

proc test_disassembly {test} {
    global match orig

    gdb_test_multiple "disass main" $test {
	-re $match {
	    set got $expect_out(1,string)
	    if [string equal -nocase $orig $got] {
		pass $test
	    } else {
		fail $test
	    }
	}
    }
}

test_disassembly "disassembly with breakpoints"

# Now check the interaction between the code cache and breakpoint
# always-inserted mode.

# Recreate the code cache when breakpoints are already inserted.
gdb_test_no_output "set code-cache off"
gdb_test_no_output "set code-cache on"

test_disassembly "disassembly with breakpoints, fresh code cache"

# Delete breakpoints.  This should update the code cache as well.
delete_breakpoints

test_disassembly "disassembly without breakpoints, no stale breakpoints"