| # Copyright (C) 2012-2021 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/>. |
| |
| # Test single-step on bbit. |
| |
| if ![istarget "*octeon*"] { |
| return -1 |
| } |
| |
| proc current_insn {} { |
| global gdb_prompt |
| |
| send_gdb "x/i \$pc\n" |
| gdb_expect { |
| -re ".*?:\\s+\(.*?\)\\s*$gdb_prompt $" { |
| set insn $expect_out(1,string) |
| return $insn |
| } |
| } |
| return "" |
| } |
| |
| proc single_step {} { |
| global gdb_prompt |
| |
| send_gdb "si\n" |
| gdb_expect { |
| -re "$gdb_prompt \$" { |
| return 1 |
| } |
| } |
| return 0 |
| } |
| |
| proc single_step_until { match } { |
| global timeout |
| |
| set insn [current_insn] |
| set start [timestamp] |
| while { $insn != "" && [timestamp] - $start < 3*$timeout } { |
| if [regexp $match $insn] { |
| return 1 |
| } |
| if {![single_step]} { |
| return 0 |
| } |
| set insn [current_insn] |
| } |
| return 0 |
| } |
| |
| proc test_bbit { name taken } { |
| if {![single_step_until "bbit"]} { |
| fail "$name single-step until bbit" |
| return |
| } |
| pass "$name single-step until bbit" |
| gdb_test "si" "" "$name single-step on bbit" |
| if [regexp "li\\s+\[sv\]0,$taken" [current_insn]] { |
| pass "$name check insn after bbit" |
| } else { |
| send_log "expected: li\\s+\[sv\]0,$taken found [current_insn]\n" |
| fail "$name check insn after bbit" |
| } |
| } |
| |
| set testfile "mips-octeon-bbit" |
| set srcfile ${testfile}.c |
| set binfile ${objdir}/${subdir}/${testfile} |
| |
| if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable \ |
| {debug nowarnings}] != "" } { |
| fail "compilation" |
| return |
| } |
| |
| pass "compilation" |
| |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load ${binfile} |
| # Native needs run. |
| runto_main |
| |
| set tests "" |
| foreach n [list "0_10" "0_36" "1_20" "1_49"] { |
| lappend tests "bbit_is_taken_$n" |
| } |
| foreach func $tests { |
| gdb_test "break $func" "Breakpoint.*at.*" "set breakpoint on $func" |
| } |
| |
| foreach func $tests { |
| gdb_test "continue" "Continuing.*Breakpoint.*$func.*" "hit $func first" |
| test_bbit "$func branch taken" 1 |
| gdb_test "continue" "Continuing.*Breakpoint.*$func.*" "hit $func second" |
| test_bbit "$func branch not taken" 0 |
| } |