You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.4 KiB
72 lines
2.4 KiB
# |
|
# Copyright (C) 2014 The Android Open Source Project |
|
# |
|
# Licensed under the Apache License, Version 2.0 (the "License"); |
|
# you may not use this file except in compliance with the License. |
|
# You may obtain a copy of the License at |
|
# |
|
# http://www.apache.org/licenses/LICENSE-2.0 |
|
# |
|
# Unless required by applicable law or agreed to in writing, software |
|
# distributed under the License is distributed on an "AS IS" BASIS, |
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
# See the License for the specific language governing permissions and |
|
# limitations under the License. |
|
|
|
# ART debugging. ART uses SIGSEGV signals for internal purposes. To allow |
|
# gdb to debug programs using ART we need to treat this signal specially. We |
|
# also set a breakpoint in a libart.so function to stop when the program |
|
# hits an unexpected breakpoint |
|
set $art_debug_enabled = 0 |
|
define art-on |
|
if $art_debug_enabled == 0 |
|
# deal with SIGSEGV signals |
|
handle SIGSEGV noprint nostop pass |
|
|
|
# set a breakpoint and record its number |
|
set breakpoint pending on |
|
break art_sigsegv_fault |
|
set $art_bpnum = $bpnum |
|
commands $art_bpnum |
|
silent |
|
printf "Caught SIGSEGV in user program\n" |
|
end |
|
set breakpoint pending auto |
|
|
|
printf "ART debugging mode is enabled.\n" |
|
printf "If you are debugging a native only process, you need to\n" |
|
printf "re-enable normal SIGSEGV handling using this command:\n" |
|
printf " handle SIGSEGV print stop\n" |
|
set $art_debug_enabled = 1 |
|
else |
|
printf "ART debugging mode is already enabled.\n" |
|
end |
|
end |
|
|
|
document art-on |
|
Enter ART debugging mode. In ART debugging mode, SIGSEGV signals are ignored |
|
by gdb unless they are not handled by ART itself. A breakpoint is |
|
set to stop the program when an unexpected SIGSEGV signal is |
|
encountered. |
|
|
|
To switch ART debugging mode off, use "art-off" |
|
end |
|
|
|
define art-off |
|
if $art_debug_enabled == 1 |
|
# restore SIGSEGV to its default |
|
handle SIGSEGV print stop pass |
|
|
|
# delete our breakpoint |
|
delete $art_bpnum |
|
|
|
set $art_debug_enabled = 0 |
|
printf "ART debugging mode is disabled.\n" |
|
end |
|
end |
|
|
|
document art-off |
|
Leave ART debugging mode. Signal handling is restored to default settings. |
|
|
|
Use the command "art-on" to enable ART debugging mode. |
|
end
|
|
|