binutils-gdb/gdb/testsuite/gdb.arch/ftrace-insn-reloc.exp

# Copyright 2015-2017 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/>.

load_lib "trace-support.exp"

standard_testfile insn-reloc.c
set executable $testfile
set expfile $testfile.exp

# Some targets have leading underscores on assembly symbols.
set additional_flags [gdb_target_symbol_prefix_flags]

if [prepare_for_testing "failed to prepare" $executable $srcfile \
	[list debug $additional_flags]] {
    return -1
}

if ![runto_main] {
    fail "can't run to main to check for trace support"
    return -1
}

if ![gdb_target_supports_trace] {
    unsupported "target does not support trace"
    return -1
}

set libipa [get_in_proc_agent]
set remote_libipa [gdb_load_shlib $libipa]

# Can't use prepare_for_testing, because that splits compiling into
# building objects and then linking, and we'd fail with "linker input
# file unused because linking not done" when building the object.

if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
	  executable [list debug $additional_flags shlib=$libipa] ] != "" } {
    untested "failed to compile"
    return -1
}
clean_restart ${executable}

if ![runto_main] {
    fail "can't run to main for ftrace tests"
    return 0
}

gdb_reinitialize_dir $srcdir/$subdir

if { [gdb_test "info sharedlibrary" ".*${remote_libipa}.*" "IPA loaded"] != 0 } {
    untested "could not find IPA lib loaded"
    return 1
}

# Read function name from testcases[N].

proc read_testcase { n } {
    global gdb_prompt

    set result -1
    gdb_test_multiple "print testcases\[${n}\]" "read name of test case ${n}" {
	-re "\[$\].*= .*<(.*)>.*$gdb_prompt $" {
	    set result $expect_out(1,string)
	}
	-re "$gdb_prompt $" { }
    }

    return $result
}

set n_testcases [gdb_readexpr "n_testcases"]

if { ${n_testcases} == 0 } {
    untested "no instruction relocation to test"
    return 1
}

# Set a fast tracepoint on each set_point${i} symbol.  There is one for
# each testcase.
for { set i 0 } { ${i} < ${n_testcases} } { incr i } {
    set testcase [read_testcase $i]

    gdb_test "ftrace *set_point$i" "Fast tracepoint .*" \
	"fast tracepoint on ${testcase}"
}

gdb_test "break pass" ".*" ""
gdb_test "break fail" ".*" ""

gdb_test_no_output "tstart" "start trace experiment"

# Make sure we have hit the pass breakpoint for each testcase.
for { set i 0 } { ${i} < ${n_testcases} } { incr i } {
    set testcase [read_testcase $i]

    gdb_test "continue" \
	".*Breakpoint \[0-9\]+, pass \(\).*" \
	"relocated instruction at ${testcase}"
}

gdb_test "tstatus" ".*Collected ${n_testcases} trace frames.*" "check on trace status"

gdb_test "tstop" "" ""