testsuite/gdb.trace/tsv.exp

#   Copyright 2009-2020 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"


gdb_exit
gdb_start
standard_testfile actions.c
if ![gdb_trace_common_supports_arch] {
    unsupported "no trace-common.h support for arch"
    return -1
}
if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
	  executable {debug nowarnings}] != "" } {
    untested "failed to compile"
    return -1
}
gdb_load $binfile

# PR gdb/21352: Command tsave does not support -r argument
gdb_test "tsave -r" "Argument required \\\(file in which to save trace data\\\)\." \
    "tsave command properly supports -r argument"

gdb_test "tvariable \$tvar1" \
  "Trace state variable \\\$tvar1 created, with initial value 0." \
  "create a trace state variable"

gdb_test "tvariable \$tvar2 = 45" \
  "Trace state variable \\\$tvar2 created, with initial value 45." \
  "create a trace state variable with initial value"

gdb_test "tvariable \$tvar2 = -92" \
  "Trace state variable \\\$tvar2 now has initial value -92." \
  "change initial value of a trace state variable"

gdb_test "tvariable \$tvar3 = 2 + 3" \
  "Trace state variable \\\$tvar3 created, with initial value 5." \
  "create a trace state variable with expression"

gdb_test "tvariable \$tvar3 = 1234567000000" \
  "Trace state variable \\\$tvar3 now has initial value 1234567000000." \
  "init trace state variable to a 64-bit value"

gdb_test "tvariable $" \
  "Must supply a non-empty variable name" \
  "tvariable syntax error, not empty variable name"

gdb_test "tvariable main" \
  "Name of trace variable should start with '\\\$'" \
  "tvariable syntax error, bad name"

gdb_test "tvariable \$\$" \
  "Syntax must be \\\$NAME \\\[ = EXPR \\\]" \
  "tvariable syntax error, bad name 2"

gdb_test "tvariable \$123" \
  "\\\$123 is not a valid trace state variable name" \
  "tvariable syntax error, bad name 3"

gdb_test "tvariable \$tvar1 - 93" \
  "Syntax must be \\\$NAME \\\[ = EXPR \\\]" \
  "tvariable syntax error, not an assignment"

gdb_test "tvariable \$tvar0 = 1 = 1" \
  "Left operand of assignment is not an lvalue\." \
  "tvariable creation fails with invalid expression"

gdb_test "info tvariables" \
    "Name\[\t \]+Initial\[\t \]+Current.*
\\\$tvar1\[\t \]+0\[\t \]+<undefined>.*
\\\$tvar2\[\t \]+-92\[\t \]+<undefined>.*
\\\$tvar3\[\t \]+1234567000000\[\t \]+.*<undefined>.*" \
  "List tvariables"

gdb_test "print \$tvar2" " = void" \
    "Print a trace state variable before run"

gdb_test_no_output "delete tvariable \$tvar2" \
  "delete trace state variable"

gdb_test "info tvariables" \
    "Name\[\t \]+Initial\[\t \]+Current.*
\\\$tvar1\[\t \]+0\[\t \]+<undefined>.*
\\\$tvar3\[\t \]+1234567000000\[\t \]+.*<undefined>.*" \
  "List tvariables after deletion"

gdb_test "delete tvariable" \
    "" \
    "Delete all trace state variables" \
    "Delete all trace state variables.*y or n.*$" \
    "y"

gdb_test "info tvariables" \
  "No trace state variables.*" \
  "list tvariables after deleting all"

# Now try running a trace.

runto_main
gdb_reinitialize_dir $srcdir/$subdir

# The rest of the testing needs actual tracing to work.
if { ![gdb_target_supports_trace] } then {
    unsupported "current target does not support trace"
    return 1
}

gdb_delete_tracepoints
set trcpt1 [gdb_gettpnum gdb_c_test]

if { $trcpt1 <= 0 } then {
    fail "setting tracepoints"
    return
}

gdb_test "tvariable \$tvar5 = 15" \
  "Trace state variable \\\$tvar5 created, with initial value 15." \
  "create a trace state variable tvar5"

gdb_trace_setactions "collect tsv for first tracepoint" \
	"$trcpt1" \
	"collect \$tvar5 += 1" "^$"

gdb_test_no_output "tstart" ""

gdb_test "print \$tvar5" " = 15" \
    "Print a trace state variable at start of run"

# Be sure not to fall off the end of the program.
gdb_breakpoint "end" qualified
gdb_test "continue" \
    "Continuing.*Breakpoint $decimal, end.*" \
    "run trace experiment"

gdb_test "print \$tvar5" " = 16" \
    "Print a trace state variable during run"

gdb_test_no_output "tstop" ""

# Save trace frames to tfile.
set tracefile [standard_output_file ${testfile}]
gdb_test "tsave ${tracefile}.tf" \
    "Trace data saved to file '${tracefile}.tf'.*" \
    "save tfile trace file"
# Save trace frames to ctf.
gdb_test "tsave -ctf ${tracefile}.ctf" \
    "Trace data saved to directory '${tracefile}.ctf'.*" \
    "save ctf trace file"

proc check_tsv { data_source } {
    with_test_prefix "${data_source}" {
	gdb_test "tfind 0"
	gdb_test "print \$tvar5" " = 16" \
	    "Print a trace state variable"
	gdb_test "tfind" \
	    "Target failed to find requested trace frame.*"
    }
}

# Check the tsv from the live inferior.
check_tsv "live"

# Change target to tfile.
set test "change to tfile target"
gdb_test_multiple "target tfile ${tracefile}.tf" "$test" {
    -re "A program is being debugged already.  Kill it. .y or n. " {
	send_gdb "y\n"
	exp_continue
    }
    -re "$gdb_prompt $" {
	pass "$test"
    }
}

# Check the tsv from tfile.

check_tsv "tfile"
# Try to read ctf data if GDB supports.
gdb_test_multiple "target ctf ${tracefile}.ctf" "" {
    -re "Undefined target command: \"ctf ${tracefile}.ctf\"\.  Try \"help target\"\.\r\n$gdb_prompt $" {
    }
    -re ".*\r\n$gdb_prompt $" {
	check_tsv "ctf"
    }
}

# Restart.
clean_restart ${binfile}

if ![runto_main] then {
    fail "can't run to main"
    return
}

# If there are predefined TSVs, test these predefined TSVs are correctly
# uploaded.
if [target_info exists gdb,predefined_tsv] {
    set tsv [target_info gdb,predefined_tsv]

    # Test predefined TSVs are uploaded.
    gdb_test "info tvariables" ".*${tsv}.*" "predefined tsvs are uploaded"
} else {
    # Otherwise (the predefined TSVs are not defined in the board file),
    # test there is no TSVs in GDB.
    gdb_test "info tvariables" "No trace state variables\." \
	"no predefined tsvs"
}