btrace, gdbserver: read branch trace incrementally

[deliverable/binutils-gdb.git] / gdb / testsuite / gdb.btrace / record_goto.exp

# This testcase is part of GDB, the GNU debugger.
#
# Copyright 2013 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

set opts {}
if [info exists COMPILE] {
    # make check RUNTESTFLAGS="gdb.btrace/record_goto.exp COMPILE=1"
    standard_testfile record_goto.c
    lappend opts debug
} elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
    verbose "Skipping ${testfile}."
    return
}

if [prepare_for_testing record_goto.exp $testfile $srcfile $opts] {
    return -1
}
if ![runto_main] {
    return -1
}

# we want a small context sizes to simplify the test
gdb_test_no_output "set record instruction-history-size 3"
gdb_test_no_output "set record function-call-history-size 3"

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

# start by listing all functions
gdb_test "record function-call-history /ci 1, +20" [join [list \
  "1\tfun4\tinst 1,3" \
  "2\t  fun1\tinst 4,7" \
  "3\tfun4\tinst 8,8" \
  "4\t  fun2\tinst 9,11" \
  "5\t    fun1\tinst 12,15" \
  "6\t  fun2\tinst 16,17" \
  "7\tfun4\tinst 18,18" \
  "8\t  fun3\tinst 19,21" \
  "9\t    fun1\tinst 22,25" \
  "10\t  fun3\tinst 26,26" \
  "11\t    fun2\tinst 27,29" \
  "12\t      fun1\tinst 30,33" \
  "13\t    fun2\tinst 34,35" \
  "14\t  fun3\tinst 36,37" \
  "15\tfun4\tinst 38,39" \
  ] "\r\n"]

# let's see if we can go back in history
gdb_test "record goto 18" ".*fun4 \\(\\) at record_goto.c:43.*"

# the function call history should start at the new location
gdb_test "record function-call-history /ci" [join [list \
  "7\tfun4\tinst 18,18" \
  "8\t  fun3\tinst 19,21" \
  "9\t    fun1\tinst 22,25" \
  ] "\r\n"] "function-call-history from 18 forwards"

# the instruction history should start at the new location
gdb_test "record instruction-history" [join [list \
  "18.*" \
  "19.*" \
  "20.*" \
  ] "\r\n"] "instruction-history from 18 forwards"

# let's go to another place in the history
gdb_test "record goto 26" ".*fun3 \\(\\) at record_goto.c:35.*"

# check the back trace at that location
gdb_test "backtrace" [join [list \
  "#0.*fun3.*at record_goto.c:35.*" \
  "#1.*fun4.*at record_goto.c:43.*" \
  "#2.*main.*at record_goto.c:49.*" \
  "Backtrace stopped: not enough registers or memory available to unwind further" \
  ] "\r\n"]

# walk the backtrace
gdb_test "up" ".*fun4.*at record_goto.c:43.*" "up to fun4"
gdb_test "up" ".*main.*at record_goto.c:49.*" "up to main"

# the function call history should start at the new location
gdb_test "record function-call-history /ci -" [join [list \
  "8\t  fun3\tinst 19,21" \
  "9\t    fun1\tinst 22,25" \
  "10\t  fun3\tinst 26,26\r" \
  ] "\r\n"] "function-call-history from 26 backwards"

# the instruction history should start at the new location
gdb_test "record instruction-history -" [join [list \
  "24.*" \
  "25.*" \
  "26.*\r" \
  ] "\r\n"] "instruction-history from 26 backwards"

# test that we can go to the begin of the trace
gdb_test "record goto begin" ".*fun4 \\(\\) at record_goto.c:40.*"

# check that we're filling up the context correctly
gdb_test "record function-call-history /ci -" [join [list \
  "1\tfun4\tinst 1,3" \
  "2\t  fun1\tinst 4,7" \
  "3\tfun4\tinst 8,8" \
  ] "\r\n"] "function-call-history from begin backwards"

# check that we're filling up the context correctly
gdb_test "record instruction-history -" [join [list \
  "1.*" \
  "2.*" \
  "3.*" \
  ] "\r\n"] "instruction-history from begin backwards"

# we should get the exact same history from the first instruction
gdb_test "record goto 2" ".*fun4 \\(\\) at record_goto.c:40.*"

# check that we're filling up the context correctly
gdb_test "record function-call-history /ci -" [join [list \
  "1\tfun4\tinst 1,3" \
  "2\t  fun1\tinst 4,7" \
  "3\tfun4\tinst 8,8" \
  ] "\r\n"] "function-call-history from 2 backwards"

# check that we're filling up the context correctly
gdb_test "record instruction-history -" [join [list \
  "1.*" \
  "2.*" \
  "3.*" \
  ] "\r\n"] "instruction-history from 2 backwards"

# check that we can go to the end of the trace
gdb_test "record goto end" ".*main \\(\\) at record_goto.c:50.*"

# check that we're filling up the context correctly
gdb_test "record function-call-history /ci" [join [list \
  "13\t    fun2\tinst 34,35" \
  "14\t  fun3\tinst 36,37" \
  "15\tfun4\tinst 38,39" \
  ] "\r\n"] "function-call-history from end forwards"

# check that we're filling up the context correctly
gdb_test "record instruction-history" [join [list \
  "37.*" \
  "38.*" \
  "39.*" \
  ] "\r\n"] "instruction-history from end forwards"

# we should get the exact same history from the second to last instruction
gdb_test "record goto 38" ".*fun4 \\(\\) at record_goto.c:44.*"

# check that we're filling up the context correctly
gdb_test "record function-call-history /ci" [join [list \
  "13\t    fun2\tinst 34,35" \
  "14\t  fun3\tinst 36,37" \
  "15\tfun4\tinst 38,39" \
  ] "\r\n"] "function-call-history from 38 forwards"

# check that we're filling up the context correctly
gdb_test "record instruction-history" [join [list \
  "37.*" \
  "38.*" \
  "39.*" \
  ] "\r\n"] "instruction-history from 38 forwards"