1# Copyright 2008-2020 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# This file is part of the GDB testsuite. It tests stepping over 17# consecutive instructions in reverse. 18 19if ![supports_reverse] { 20 return 21} 22 23standard_testfile 24 25if { [prepare_for_testing "failed to prepare" $testfile $srcfile] } { 26 return -1 27} 28 29runto main 30 31if [supports_process_record] { 32 # Activate process record/replay 33 gdb_test_no_output "record" "turn on process record" 34} 35 36set is_stmt [is_stmt_addresses $srcfile] 37 38gdb_breakpoint foo 39gdb_test "continue" "Breakpoint $decimal, foo .*" \ 40 "continue to breakpoint in foo" 41 42set foo1_addr 0 43set foo2_addr 0 44set stop_addr 0 45 46gdb_test_multiple "x /2i \$pc" "get breakpoint address for foo" { 47 global hex 48 global foo1_addr 49 global foo2_addr 50 global gdb_prompt 51 52 -re "=> ($hex).*\[\r\n\]+ ($hex).*$gdb_prompt $" { 53 set foo1_addr $expect_out(1,string) 54 set foo2_addr $expect_out(2,string) 55 pass "get breakpoint address for foo" 56 } 57} 58 59gdb_test "break \*$foo2_addr" "Breakpoint $decimal at $foo2_addr: file .*" \ 60 "set bp, 2nd instr" 61 62set testmsg "stopped at bp, 2nd instr" 63gdb_test_multiple "step" $testmsg { 64 -re -wrap "Breakpoint $decimal, ($hex) in foo.*" { 65 set stop_addr $expect_out(1,string) 66 if [eval expr "$foo2_addr == $stop_addr"] then { 67 pass "stopped at bp, 2nd instr" 68 } else { 69 fail "stopped at bp, 2nd instr (wrong address)" 70 } 71 } 72 -re -wrap "Breakpoint $decimal, foo.*" { 73 set stop_addr [get_valueof "/x" "\$pc" "" "value of pc"] 74 set stop_addr_is_stmt [hex_in_list $stop_addr $is_stmt] 75 if { ! $stop_addr_is_stmt } { 76 fail "stopped at bp, 2nd instr (missing hex prefix)" 77 } elseif [eval expr "$foo2_addr == $stop_addr"] then { 78 pass "stopped at bp, 2nd instr" 79 } else { 80 fail "stopped at bp, 2nd instr (wrong address)" 81 } 82 } 83} 84 85### 86### 87### 88 89# Set reverse execution direction 90 91gdb_test_no_output "set exec-dir reverse" "set reverse execution" 92 93# Now step backward and hope to hit the first breakpoint. 94 95set test_msg "stopped at bp in reverse, 1st instr" 96gdb_test_multiple "step" "$test_msg" { 97 -re "Breakpoint $decimal, ($hex) in foo.*$gdb_prompt $" { 98 set stop_addr $expect_out(1,string) 99 if [eval expr "$foo1_addr == $stop_addr"] then { 100 pass "$test_msg" 101 } else { 102 fail "$test_msg (wrong address)" 103 } 104 } 105 -re "Breakpoint $decimal, foo.*$gdb_prompt $" { 106 gdb_test "print \$pc == $foo1_addr" \ 107 "$decimal = 1" \ 108 "$test_msg" 109 } 110} 111