1# Copyright 1988-2020 Free Software Foundation, Inc. 2 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program. If not, see <http://www.gnu.org/licenses/>. 15 16# Test that GDB saves and restores terminal settings correctly. Also check 17# the output of the "info terminal" command. 18 19if { [prepare_for_testing "failed to prepare" term term.c] } { 20 return -1 21} 22 23# Once before running the program. 24gdb_test "info terminal" \ 25 "No saved terminal information.*" \ 26 "test info terminal pre-execution" 27 28if ![runto break_here] then { 29 fail "can't run to break_here" 30 return 0 31} 32 33# Read the inferior's terminal settings, saved in the T global variable. 34 35proc read_term_settings_from_inferior {} { 36 set termios(c_iflag) [get_hexadecimal_valueof "t.c_iflag" oops] 37 set termios(c_oflag) [get_hexadecimal_valueof "t.c_oflag" oops] 38 set termios(c_cflag) [get_hexadecimal_valueof "t.c_cflag" oops] 39 set termios(c_lflag) [get_hexadecimal_valueof "t.c_lflag" oops] 40 41 return [array get termios] 42} 43 44# Validate that gdb's notion of the inferior's terminal settings are consistent 45# with the values read from the inferior. 46 47proc compare_gdb_and_inferior_settings { t } { 48 global decimal 49 array set termios $t 50 51 gdb_test "info terminal" \ 52 [multi_line "Inferior's terminal status .currently saved by GDB.:" \ 53 "File descriptor flags = .*" \ 54 "Process group = $decimal" \ 55 "c_iflag = ${termios(c_iflag)}, c_oflag = ${termios(c_oflag)}," \ 56 "c_cflag = ${termios(c_cflag)}, c_lflag = ${termios(c_lflag)}.*" ] 57} 58 59if {[target_info gdb_protocol] == ""} { 60 # Record the initial terminal settings. Verify that GDB's version of the 61 # inferior's terminal settings is right. 62 with_test_prefix "initial" { 63 array set termios1 [read_term_settings_from_inferior] 64 compare_gdb_and_inferior_settings [array get termios1] 65 } 66 67 # Continue until after the inferior removes ECHO from its terminal settings. 68 gdb_continue_to_breakpoint "continue until after tcsetattr" 69 70 # After the inferior has changed its terminal settings, check that GDB's 71 # saved version reflects the new settings correctly. 72 with_test_prefix "post tcsetattr" { 73 array set termios2 [read_term_settings_from_inferior] 74 compare_gdb_and_inferior_settings [array get termios2] 75 76 # Make sure that the current settings are different than the initial 77 # settings... otherwise this test is meaningless. 78 gdb_assert {${termios1(c_lflag)} != ${termios2(c_lflag)}} 79 } 80 81 # Continue again... 82 gdb_continue_to_breakpoint "continue again" 83 84 # ... and verify again, to validate that when resuming, GDB restored the 85 # inferior's terminal settings correctly. 86 with_test_prefix "after last resume" { 87 array set termios3 [read_term_settings_from_inferior] 88 compare_gdb_and_inferior_settings [array get termios3] 89 gdb_assert {${termios2(c_iflag)} == ${termios3(c_iflag)}} 90 gdb_assert {${termios2(c_oflag)} == ${termios3(c_oflag)}} 91 gdb_assert {${termios2(c_cflag)} == ${termios3(c_cflag)}} 92 gdb_assert {${termios2(c_lflag)} == ${termios3(c_lflag)}} 93 } 94} else { 95 # While only native targets save terminal status, we still test 96 # that the command doesn't misbehave. 97 gdb_test "info terminal" "No saved terminal information\\." "info terminal at breakpoint" 98} 99 100delete_breakpoints 101gdb_continue_to_end 102 103# One last time after the program having exited. 104gdb_test "info terminal" \ 105 "No saved terminal information.*" \ 106 "test info terminal post-execution" 107