old-cross-binutils/gdb/testsuite/gdb.btrace/stepi.exp

# This testcase is part of GDB, the GNU debugger.
#
# Copyright 2013-2015 Free Software Foundation, Inc.
#
# Contributed by Intel Corp. <markus.t.metzger@intel.com>
#
# 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/>.

# check for btrace support
if { [skip_btrace_tests] } { return -1 }

# start inferior
standard_testfile x86-record_goto.S
if [prepare_for_testing stepi.exp $testfile $srcfile] {
    return -1
}

global gdb_prompt

if ![runto_main] {
    return -1
}

proc check_replay_at { insn } {
  gdb_test "info record" [join [list \
    "Active record target: record-btrace" \
    "Recorded 40 instructions in 16 functions for .*" \
    "Replay in progress\.  At instruction $insn\." \
    ] "\r\n"]
}

# trace the call to the test function
gdb_test_no_output "record btrace"
gdb_test "next"

# we start with stepping to make sure that the trace is fetched automatically
gdb_test "reverse-stepi" ".*fun4\.5.*"
gdb_test "reverse-stepi" ".*fun4\.5.*"

# let's check where we are in the trace
with_test_prefix "reverse-stepi to 39" { check_replay_at 39 }

# let's step forward and check again
gdb_test "stepi" ".*fun4\.5.*"
with_test_prefix "stepi to 40" { check_replay_at 40 }

# with the next step, we stop replaying
gdb_test "stepi" ".*main\.3.*"
gdb_test "info record" [join [list \
  "Active record target: record-btrace" \
  "Recorded 40 instructions in 16 functions for \[^\\\r\\\n\]*" \
  ] "\r\n"] "stepi to live"

# let's step from a goto position somewhere in the middle
gdb_test "record goto 22" ".*fun3\.2.*"
with_test_prefix "goto 22" { check_replay_at 22 }

gdb_test "stepi" ".*fun1\.1.*"
with_test_prefix "stepi to 23" { check_replay_at 23 }

# and back again
gdb_test "reverse-stepi" ".*fun3\.2.*"
gdb_test "reverse-stepi" ".*fun3\.1.*"
with_test_prefix "reverse-stepi to 21" { check_replay_at 21 }

# let's try to step off the left end
gdb_test "record goto begin" ".*main\.2.*"
with_test_prefix "goto begin" { check_replay_at 1 }

gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }

# we can step forward, though
gdb_test "stepi" ".*fun4\.1.*"
with_test_prefix "stepi to 2" { check_replay_at 2 }

# let's try to step off the left end again
gdb_test "reverse-stepi" ".*main\.2.*"
gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }