如何使用命令标志在将来的共享库上设置断点
问题描述:
我试图使用--command
标志自动化gdb会话。我试图在一个共享库的函数中设置一个断点(一个DLL的Unix等价物)。我cmds.gdb看起来是这样的:如何使用命令标志在将来的共享库上设置断点
set args /home/shlomi/conf/bugs/kde/font-break.txt
b IA__FcFontMatch
r
不过,我得到以下几点:
shlomi:~/progs/bugs-external/kde/font-breaking$ gdb --command=cmds.gdb... GNU gdb 6.8-2mdv2009.0 (Mandriva Linux release 2009.0) Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i586-mandriva-linux-gnu"... (no debugging symbols found) Function "IA__FcFontMatch" not defined. Make breakpoint pending on future shared library load? (y or [n]) [answered N; input not from terminal]
所以它不设置断点毕竟。我怎样才能让它默认回答“y”来设置将来未来共享库加载的断点?
我记得我能够做些事情,但不记得是什么。
答
在回答自己解释说,我想给的答案,有人给了我在IRC:
(gdb) apropos pending actions -- Specify the actions to be taken at a tracepoint set breakpoint -- Breakpoint specific settings set breakpoint pending -- Set debugger's behavior regarding pending breakpoints show breakpoint -- Breakpoint specific settings show breakpoint pending -- Show debugger's behavior regarding pending breakpoints
所以设置断点上未决的伎俩;它被用于cmds.gdb
,例如,
set breakpoint pending on
break <source file name>:<line number>
答
没有符号。
objdump -t /lib/libacl.so
SYMBOL TABLE:
no symbols
objdump -T /lib/libacl.so
...
00002bd0 g DF .text 000000d0 ACL_1.0 acl_delete_entry
...
(gdb) break 0x0002bd0
(gdb) x/20i acl_delete_entry
0x2bd0 <acl_delete_entry>: stwu r1,-32(r1)
0x2bd4 <acl_delete_entry+4>: mflr r0
0x2bd8 <acl_delete_entry+8>: stw r29,20(r1)
0x2bdc <acl_delete_entry+12>: stw r30,24(r1)
0x2be0 <acl_delete_entry+16>: mr r29,r4
0x2be4 <acl_delete_entry+20>: li r4,28972
答
OT:在终端它看起来像这样调试卡哈在一条线:
gdb -ex "set breakpoint pending on" -ex "break gdk_x_error" -ex run --args caja --sync
相关:可以gdb的消息“从终端输入不是”被抑制?](HTTP:// *.com/questions/23005668/can-gdbs-input-not-from-terminal-messages-be-suppressed) – TooTone 2015-07-16 11:08:02