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# Copyright (C) 2015 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/>.
if ![supports_reverse] {
return
}
# Test aarch64 instruction recording.
if {![is_aarch64_target]} then {
verbose "Skipping aarch64 instruction recording tests."
return
}
standard_testfile
if {[prepare_for_testing $testfile.exp $testfile $srcfile \
[list debug]]} {
untested ${testfile}.exp
return -1
}
if { ![runto main] } then {
fail "run to main"
return
}
# In each function FUNC, GDB turns on process record, and single step
# until program goes to the end of the function. Then, single step
# backward. In each of forward single step and backward single step,
# the contents of registers are saved, and test compares them. If
# there is any differences, a FAIL is emitted.
proc test { func } {
global hex decimal
global gdb_prompt
with_test_prefix "$func" {
gdb_breakpoint $func
gdb_test "continue"
set last_insn ""
set test "disassemble $func"
gdb_test_multiple $test $test {
-re ".*($hex) <\\+$decimal>:\[^\r\n\]+\r\nEnd of assembler dump\.\r\n$gdb_prompt $" {
set last_insn $expect_out(1,string)
}
}
if { $last_insn == "" } {
fail "find the last instruction of function $func"
}
# Activate process record/replay
gdb_test_no_output "record" "Turn on process record"
# Registers contents before each forward single step.
set count 0
for {} {$count < 500} {incr count} {
gdb_test_multiple "x/i \$pc" "" {
-re ".* ($hex) <.*>:\[ \t\]*(.*)\r\n$gdb_prompt $" {
set insn_addr $expect_out(1,string)
if [expr {$last_insn == $insn_addr}] {
break
}
set insn_array($count) $expect_out(2,string)
}
}
set pre_regs($count) [capture_command_output "info all-registers" ""]
gdb_test "si" "" ""
}
incr count -1
# Registers contents after each backward single step.
for {set i $count} {$i >= 0} {incr i -1} {
gdb_test "reverse-stepi" "" ""
set post_regs($i) [capture_command_output "info all-registers" ""]
}
# Compare the register contents.
for {set i 0} {$i < $count} {incr i} {
if { ![gdb_assert { [string compare $pre_regs($i) $post_regs($i)] == 0 } \
"compare registers on insn $i:$insn_array($i)"] } {
foreach pre_line [split $pre_regs($i) \n] post_line [split $post_regs($i) \n] {
if { [string compare $pre_line $post_line] } {
verbose -log " -:$pre_line"
verbose -log " +:$post_line"
}
}
}
}
gdb_test "record stop"
}
}
test "load"
test "move"
test "adv_simd_mod_imm"
test "adv_simd_scalar_index"
test "adv_simd_smlal"
test "adv_simd_vect_shift"
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