gdb/testsuite/gdb.arch/amd64-stap-optional-prefix.exp

# Copyright 2014-2021 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/>.

# This testcase is for PR breakpoints/16889

standard_testfile ".S"

if { ![istarget "x86_64-*-*"] || ![is_lp64_target] } {
    verbose "Skipping $testfile.exp"
    return
}

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

# Helper procedure to go to probe NAME

proc goto_probe { name } {
    global decimal hex

    gdb_test "break -pstap $name" "Breakpoint $decimal at $hex"
    gdb_test "continue" "Breakpoint $decimal, main \\(\\) at .*\r\n.*STAP_PROBE1.*${name},.*\\)"
}

# Helper procedure to test the probe's argument

proc test_probe_value { value reg_val } {
    gdb_test "print \$_probe_argc" "= 1"
    gdb_test "print \$_probe_arg0" "= $value"
    gdb_test "print \$_probe_arg0 == *((unsigned int *) (${reg_val}))" "= 1"
}

proc test_probe_value_without_reg { value } {
    gdb_test "print \$_probe_argc" "= 1"
    gdb_test "print \$_probe_arg0" "= $value"
}

if { ![runto_main] } {
    return -1
}

foreach probe_name [list "foo" "bar" "foo_prefix" "bar_prefix"] \
    probe_val [list "42" "42" "42" "42"] \
    probe_reg_val [list "\$rsp" "\$rbp - 8" "\$rsp" "\$rbp - 8"] {
    with_test_prefix $probe_name {
	goto_probe $probe_name
	test_probe_value $probe_val $probe_reg_val
    }
}

# Testing normal probes, with several prefixes.

set normal_probes_names { }

foreach bit [list 8 16 32 64] {
    lappend normal_probes_names "uint${bit}_probe"
    lappend normal_probes_names "int${bit}_probe"
}

foreach probe_name $normal_probes_names \
    probe_val [list 8 -8 16 -16 32 -32 64 -64] {
    with_test_prefix $probe_name {
	goto_probe $probe_name
	test_probe_value_without_reg $probe_val
    }
}

# Testing the fail probes.

with_test_prefix "fail_probe" {
    goto_probe "fail_probe"
    gdb_test "print \$_probe_arg0" "warning: unrecognized bitness `-7' for probe `fail_probe'\r\nInvalid probe argument 0 -- probe has 0 arguments available"
}

with_test_prefix "fail2_probe" {
    goto_probe "fail2_probe"
    gdb_test "print \$_probe_arg0" "Unknown numeric token on expression `23-@\\\$16'."
}