projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 88b9d363 | 1 | # Copyright 2018-2022 Free Software Foundation, Inc. |
| 1d509aa6 MM |
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 | if { ![supports_reverse] } { | |
| 17 | untested "target does not support record" | |
| 18 | return -1 | |
| 19 | } | |
| 20 | ||
| 21 | standard_testfile | |
| 22 | ||
| 23 | set cflags "-mindirect-branch=thunk -mfunction-return=thunk" | |
| 24 | if { [prepare_for_testing "failed to prepare" $testfile $srcfile \ | |
| 25 | [list debug "additional_flags=$cflags"]] } { | |
| 26 | return -1 | |
| 27 | } | |
| 28 | ||
| 29 | if { ![runto_main] } { | |
| 30 | untested "failed to run to main" | |
| 31 | return -1 | |
| 32 | } | |
| 33 | ||
| 34 | # Do repeated stepping COMMANDs in order to reach TARGET from CURRENT | |
| 35 | # | |
| 36 | # COMMAND is a stepping command | |
| 37 | # CURRENT is a string matching the current location | |
| 38 | # TARGET is a string matching the target location | |
| 39 | # TEST is the test name | |
| 40 | # | |
| 41 | # The function issues repeated COMMANDs as long as the location matches | |
| 42 | # CURRENT up to a maximum of 100 steps. | |
| 43 | # | |
| 44 | # TEST passes if the resulting location matches TARGET and fails | |
| 45 | # otherwise. | |
| 46 | # | |
| 47 | proc step_until { command current target test } { | |
| 48 | global gdb_prompt | |
| 49 | ||
| 50 | set count 0 | |
| 51 | gdb_test_multiple "$command" "$test" { | |
| 52 | -re "$current.*$gdb_prompt $" { | |
| 53 | incr count | |
| 54 | if { $count < 100 } { | |
| 55 | send_gdb "$command\n" | |
| 56 | exp_continue | |
| 57 | } else { | |
| 58 | fail "$test" | |
| 59 | } | |
| 60 | } | |
| 61 | -re "$target.*$gdb_prompt $" { | |
| 62 | pass "$test" | |
| 63 | } | |
| 64 | } | |
| 65 | } | |
| 66 | ||
| 67 | gdb_test_no_output "record" | |
| 68 | gdb_test "next" ".*" "record trace" | |
| 69 | ||
| 70 | # Normal stepping steps through all thunks. | |
| 71 | gdb_test "reverse-step" "apply\.3.*" "reverse-step into apply" | |
| 72 | gdb_test "reverse-step" "inc\.3.*" "reverse-step into inc" | |
| 73 | gdb_test "reverse-step" "inc\.2.*" "reverse-step inside inc" | |
| 74 | gdb_test "reverse-step" "apply\.2.*" \ | |
| 4d421147 | 75 | "reverse-step through call thunk into apply, first time" |
| 1d509aa6 MM |
76 | gdb_test "reverse-step" "main\.2.*" "reverse-step into main" |
| 77 | gdb_test "step" "apply\.2.*" "step into apply" | |
| 78 | gdb_test "step" "inc\.2.*" "step through call thunk into inc" | |
| 79 | gdb_test "reverse-step" "apply\.2.*" \ | |
| 4d421147 | 80 | "reverse-step through call thunk into apply, second time" |
| 1d509aa6 MM |
81 | gdb_test "next" "apply\.3.*" "step through thunks and over inc" |
| 82 | gdb_test "reverse-next" "apply\.2.*" \ | |
| 83 | "reverse-step through thunks and over inc" | |
| 84 | ||
| 85 | # We can use instruction stepping to step into thunks. | |
| 86 | step_until "stepi" "apply\.2" "indirect_thunk" "stepi into call thunk" | |
| 87 | step_until "stepi" "indirect_thunk" "inc" \ | |
| 88 | "stepi out of call thunk into inc" | |
| 89 | step_until "stepi" "inc" "return_thunk" "stepi into return thunk" | |
| 90 | step_until "stepi" "return_thunk" "apply" \ | |
| 91 | "stepi out of return thunk back into apply" | |
| 92 | ||
| 93 | step_until "reverse-stepi" "apply" "return_thunk" \ | |
| 94 | "reverse-stepi into return thunk" | |
| 95 | step_until "reverse-stepi" "return_thunk" "inc" \ | |
| 96 | "reverse-stepi out of return thunk into inc" | |
| 97 | step_until "reverse-stepi" "inc" "indirect_thunk" \ | |
| 98 | "reverse-stepi into call thunk" | |
| 99 | step_until "reverse-stepi" "indirect_thunk" "apply" \ | |
| 100 | "reverse-stepi out of call thunk into apply" |