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# 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/>.
# This test is used to confirm that GDB is able to step, stopping at an
# epilogue line, then step out of the function.
standard_testfile
if { ![have_epilogue_line_info] } {
untested "This test doesn't work with this compiler"
return
}
if { [prepare_for_testing "failed to prepare" $testfile \
{step-through-epilogue.c}] } {
untested "failed to prepare"
return
}
if { ![runto_main] } {
untested "couldn't run to main"
return
}
proc step_till_epilogue_multiply {} {
gdb_test "step" ".*return a . b;.*" "step into multiply"
gdb_test "step" \
"$::decimal\\s+\\\}\[^\r\n\]+Epilogue line of multiply.*" \
"stop at the epilogue of multiply"
}
proc step_till_epilogue_square {} {
gdb_test "step" ".*return multiply.*" "step into square"
step_till_epilogue_multiply
gdb_test "step" \
"$::decimal\\s+\\\}\[^\r\n\]+Epilogue line of square.*" \
"stop at epilogue of square"
}
with_test_prefix "multiply" {
step_till_epilogue_multiply
gdb_test "step" "x = square \\(2\\);" "leave function"
}
with_test_prefix "square" {
step_till_epilogue_square
gdb_test "step" ".*x = multiply \\(square \\(1\\), square \\(2\\)\\);.*"\
"leave function"
}
# Some gcc versions can mess this test by requiring extra steps in a
# few locations. We dynamically test if we're in one such versions in the
# the first argument, and use that to see if extra steps are needed to
# finish the second argument
set midway_return false
with_test_prefix "square, first argument" {
step_till_epilogue_square
gdb_test_multiple "step" "step back to main" {
-re -wrap "multiply \\(square \\(1\\), square \\(2\\)\\);" {
set midway_return true
gdb_send "step\n"
exp_continue
}
-re -wrap "return multiply.*" {
pass $gdb_test_name
}
}
}
with_test_prefix "square, second argument" {
step_till_epilogue_multiply
gdb_test "step" \
"$::decimal\\s+\\\}\[^\r\n\]+Epilogue line of square.*" \
"stop at epilogue of square"
if {$midway_return} {
gdb_test "step"\
".*x = multiply \\(square \\(1\\), square \\(2\\)\\);.*"\
"step back to main"
}
}
with_test_prefix "multiply with function args" {
step_till_epilogue_multiply
gdb_test "step" ".*return 0;.*" "leave last function"
}
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