gdb 編譯
##gdb-7.9 build gdbserver and gdb
Dependencies
Optional DejaGnu-1.6 (for tests), Doxygen-1.8.13, Guile-2.0.13, Python-2.7.13, Valgrind-3.12.0, and SystemTap (run-time dependency, also used in a few tests)
建議： 給特定用戶安裝 GDB 的 pretty-printer 打印出可讀性更好的 stdc++ 的 STL 容器 在編譯 GDB 之前，先安裝 ncurses 庫和 Python 庫（用於在 GDB 中 開啟 Python 支持，編譯 GDB 時必須添加 --with-python 選項）。
sudo apt-get install texinfo libncurses-dev libreadline-dev python-dev
gdb 編譯新版修改 // 因為 gdb 會出現 'g' packet reply is too long:
修改gdb/remote.c文件，屏蔽process_g_packet函數中的下列兩行：
if (buf_len > 2 * rsa->sizeof_g_packet)
error (_(“Remote ‘g’ packet reply is too long: %s”), rs->buf);
在其後添加：
if (buf_len > 2 * rsa->sizeof_g_packet) {
rsa->sizeof_g_packet = buf_len ;
for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
{
if (rsa->regs[i].pnum == -1)
continue;
if (rsa->regs[i].offset >= rsa->sizeof_g_packet)
rsa->regs[i].in_g_packet = 0;
else
rsa->regs[i].in_g_packet = 1;
}
}
####找到python可執行程序的位置
which python
/home/shihyu/anaconda2/bin/python
####若為Anaconda，則使用Anaconda/lib
設置環境變量
export LDFLAGS="-Wl,-rpath,/home/shihyu/anaconda2/lib -L/home/shihyu/anaconda2/lib"
./configure --enable-targets=all \
--enable-64-bit-bfd \
--with-python="/home/shihyu/anaconda2/bin/" \
--with-system-readline \
--prefix=/home/shihyu/.mybin/gdb_8.1
mkdir build ; cd build
export LDFLAGS="-Wl,-rpath,/home/shihyu/anaconda3/lib -L/home/shihyu/anaconda3/lib"
../configure --enable-targets=all \
--enable-64-bit-bfd \
--with-python=python3 \
--with-system-readline \
--prefix=/home/shihyu/.mybin/gdb_python3
./configure --enable-targets=all \
--enable-64-bit-bfd \
--with-python \
--with-system-readline \
--prefix=/home/shihyu/.mybin/gdb_8.1
# --target=arm-linux表示生成的gdb調試的目標是在arm核心Linux系統中運行的程序
# --enable-targets=all gdb可以用同一個版本支持x86，ppc等多種體系結構。
# 比較新的bfd中，當設置的target是64位或者打開--enable-targets=all的時候，不需要設置會自動打開這個選項，不過保險起見還是打開。這樣編譯出的GDB就能支持GDB支持的全部體系結構了。
make
sudo make install
把[GCC源碼目錄]/libstdc++-v3/python 複製到任意一個目錄（比如 ~/.mybin/gdb_8.1 目錄下）， 如果源碼目錄下沒有上述 python 目錄，也可以用如下方式從遠程庫拉取之後再放到 ~/.mybin/gdb_8.1 目錄下：
svn co svn://gcc.gnu.org/svn/gcc/trunk/libstdc++-v3/python
然後，編輯 ~/.gdbinit，添加如下內容
python
import sys
import os
p = os.path.expanduser('~/.gdb/python')
print p
if os.path.exists(p):
sys.path.insert(0, p)
from libstdcxx.v6.printers import register_libstdcxx_printers
register_libstdcxx_printers(None)
end
(gdb) set architecture
Display all 204 possibilities? (y or n)
alpha m68k:isa-c:nodiv:mac
alpha:ev4 m88k:88100
alpha:ev5 mep
alpha:ev6 mips
am33 mips:10000
am33-2 mips:12000
arm mips:16
armv2 mips:3000
armv2a mips:3900
armv3 mips:4000
armv3m mips:4010
armv4 mips:4100
armv4t mips:4111
armv5 mips:4120
armv5t mips:4300
armv5te mips:4400
auto mips:4600
avr mips:4650
avr:1 mips:5000
avr:2 mips:5400
avr:3 mips:5500
avr:4 mips:6000
avr:5 mips:7000
avr:6 mips:8000
cris mips:9000
cris:common_v10_v32 mips:isa32
crisv32 mips:isa32r2
ep9312 mips:isa64
fr300 mips:isa64r2
fr400 mips:loongson_2e
fr450 mips:loongson_2f
fr500 mips:mips5
fr550 mips:octeon
frv mips:sb1
h1 mn10300
h8300 ms1
h8300h ms1-003
h8300hn ms2
h8300s powerpc:403
h8300sn powerpc:601
h8300sx powerpc:603
h8300sxn powerpc:604
hppa1.0 powerpc:620
i386 powerpc:630
i386:intel powerpc:7400
i386:x86-64 powerpc:750
i386:x86-64:intel powerpc:EC603e
i8086 powerpc:MPC8XX
ia64-elf32 powerpc:a35
ia64-elf64 powerpc:common
iq10 powerpc:common64
iq2000 powerpc:e500
iwmmxt powerpc:rs64ii
iwmmxt2 powerpc:rs64iii
m16c rs6000:6000
m32c rs6000:rs1
m32r rs6000:rs2
m32r2 rs6000:rsc
m32rx s390:31-bit
m68hc11 s390:64-bit
m68hc12 score
m68k sh
m68k:5200 sh-dsp
m68k:5206e sh2
m68k:521x sh2a
m68k:5249 sh2a-nofpu
m68k:528x sh2a-nofpu-or-sh3-nommu
m68k:5307 sh2a-nofpu-or-sh4-nommu-nofpu
m68k:5407 sh2a-or-sh3e
m68k:547x sh2a-or-sh4
m68k:548x sh2e
m68k:68000 sh3
m68k:68008 sh3-dsp
m68k:68010 sh3-nommu
m68k:68020 sh3e
m68k:68030 sh4
m68k:68040 sh4-nofpu
m68k:68060 sh4-nommu-nofpu
m68k:cfv4e sh4a
m68k:cpu32 sh4a-nofpu
m68k:fido sh4al-dsp
m68k:isa-a sh5
m68k:isa-a:emac simple
m68k:isa-a:mac sparc
m68k:isa-a:nodiv sparc:sparclet
m68k:isa-aplus sparc:sparclite
m68k:isa-aplus:emac sparc:sparclite_le
m68k:isa-aplus:mac sparc:v8plus
m68k:isa-b sparc:v8plusa
m68k:isa-b:emac sparc:v8plusb
m68k:isa-b:float sparc:v9
m68k:isa-b:float:emac sparc:v9a
m68k:isa-b:float:mac sparc:v9b
m68k:isa-b:mac spu:256K
m68k:isa-b:nousp tomcat
m68k:isa-b:nousp:emac v850
m68k:isa-b:nousp:mac v850e
m68k:isa-c v850e1
m68k:isa-c:emac vax
m68k:isa-c:mac xscale
m68k:isa-c:nodiv xstormy16
m68k:isa-c:nodiv:emac xtensa
set architecture arm:指定arm硬體
- Toolchain 無法使用 android 的 arm 編譯器目前原因不清楚
https://launchpad.net/linaro-toolchain-binaries/trunk/2013.10/+download/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux.tar.bz2
- build.env
# -*- shell-script -*-
TOOLCHAIN=gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux
DIR=$(pushd $(dirname $BASH_SOURCE) > /dev/null; pwd; popd > /dev/null)
echo $DIR
export PATH=${PATH}:${DIR}/${TOOLCHAIN}/bin
export CC=arm-linux-gnueabihf-gcc
gdbserver , 要注意gdb和gdbserver版本一致
source build.env
./configure --target=arm-linux --host=arm-linux LDFLAGS="-static"
# 這裡的--host指定這個程序的目標平臺。這一步中會檢查系統中是否有交叉編譯器的。
# We must add the above LDFLAGS to let gdb statically linked, otherwise it cannot
run on Android.
time make -j8 2>&1 | tee build.log
file ./gdbserver
./gdbserver: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.1.1, BuildID[sha1]=4eec8a5a6893ed8ce65eea5d0741a55cc621236a, not stripped
cgdb
安裝 cgdb
cgdb 是一個開源的 gdb 前端，可以提供實時的代碼預覽，極大的方便了調試。
獲取源碼
$ git clone git://github.com/cgdb/cgdb.git
依賴
flex( gettext )，autoconf, aclocal, automake, help2man
安裝依賴 （1） flex
$ sudo apt-get install flex
（2） aclocal, automake, autoconf, autoheader 這些 utilities 都在 automake 包中，因此安裝automake 就夠了。
$ sudo apt-get install automake
$ sudo apt-get install autotools-dev
(3) makeinfo，這個 utility 在 texinfo 包中
$ sudo apt-get install texinfo
（3）help2man
$ sudo apt-get install help2man
編譯和安裝
$ cd cgdb
$ ./autogen.sh
$ ./configure --prefix=/usr/local
$ make
$ sudo make install
- ~/.gdbinit
# ``
# STL GDB evaluators/views/utilities - 1.03
#
# The new GDB commands:
# are entirely non instrumental
# do not depend on any "inline"(s) - e.g. size(), [], etc
# are extremely tolerant to debugger settings
#
# This file should be "included" in .gdbinit as following:
# source stl-views.gdb or just paste it into your .gdbinit file
#
# The following STL containers are currently supported:
#
# std::vector<T> -- via pvector command
# std::list<T> -- via plist or plist_member command
# std::map<T,T> -- via pmap or pmap_member command
# std::multimap<T,T> -- via pmap or pmap_member command
# std::set<T> -- via pset command
# std::multiset<T> -- via pset command
# std::deque<T> -- via pdequeue command
# std::stack<T> -- via pstack command
# std::queue<T> -- via pqueue command
# std::priority_queue<T> -- via ppqueue command
# std::bitset<n> -- via pbitset command
# std::string -- via pstring command
# std::widestring -- via pwstring command
#
# The end of this file contains (optional) C++ beautifiers
# Make sure your debugger supports $argc
#
# Simple GDB Macros writen by Dan Marinescu (H-PhD) - License GPL
# Inspired by intial work of Tom Malnar,
# Tony Novac (PhD) / Cornell / Stanford,
# Gilad Mishne (PhD) and Many Many Others.
# Contact: dan_c_marinescu@yahoo.com (Subject: STL)
#
# Modified to work with g++ 4.3 by Anders Elton
# Also added _member functions, that instead of printing the entire class in map, prints a member.
#
# std::vector<>
#
define pvector
if $argc == 0
help pvector
else
set $size = $arg0._M_impl._M_finish - $arg0._M_impl._M_start
set $capacity = $arg0._M_impl._M_end_of_storage - $arg0._M_impl._M_start
set $size_max = $size - 1
end
if $argc == 1
set $i = 0
while $i < $size
printf "elem[%u]: ", $i
p *($arg0._M_impl._M_start + $i)
set $i++
end
end
if $argc == 2
set $idx = $arg1
if $idx < 0 || $idx > $size_max
printf "idx1, idx2 are not in acceptable range: [0..%u].\n", $size_max
else
printf "elem[%u]: ", $idx
p *($arg0._M_impl._M_start + $idx)
end
end
if $argc == 3
set $start_idx = $arg1
set $stop_idx = $arg2
if $start_idx > $stop_idx
set $tmp_idx = $start_idx
set $start_idx = $stop_idx
set $stop_idx = $tmp_idx
end
if $start_idx < 0 || $stop_idx < 0 || $start_idx > $size_max || $stop_idx > $size_max
printf "idx1, idx2 are not in acceptable range: [0..%u].\n", $size_max
else
set $i = $start_idx
while $i <= $stop_idx
printf "elem[%u]: ", $i
p *($arg0._M_impl._M_start + $i)
set $i++
end
end
end
if $argc > 0
printf "Vector size = %u\n", $size
printf "Vector capacity = %u\n", $capacity
printf "Element "
whatis $arg0._M_impl._M_start
end
end
document pvector
Prints std::vector<T> information.
Syntax: pvector <vector> <idx1> <idx2>
Note: idx, idx1 and idx2 must be in acceptable range [0..<vector>.size()-1].
Examples:
pvector v - Prints vector content, size, capacity and T typedef
pvector v 0 - Prints element[idx] from vector
pvector v 1 2 - Prints elements in range [idx1..idx2] from vector
end
#
# std::list<>
#
define plist
if $argc == 0
help plist
else
set $head = &$arg0._M_impl._M_node
set $current = $arg0._M_impl._M_node._M_next
set $size = 0
while $current != $head
if $argc == 2
printf "elem[%u]: ", $size
p *($arg1*)($current + 1)
end
if $argc == 3
if $size == $arg2
printf "elem[%u]: ", $size
p *($arg1*)($current + 1)
end
end
set $current = $current._M_next
set $size++
end
printf "List size = %u \n", $size
if $argc == 1
printf "List "
whatis $arg0
printf "Use plist <variable_name> <element_type> to see the elements in the list.\n"
end
end
end
document plist
Prints std::list<T> information.
Syntax: plist <list> <T> <idx>: Prints list size, if T defined all elements or just element at idx
Examples:
plist l - prints list size and definition
plist l int - prints all elements and list size
plist l int 2 - prints the third element in the list (if exists) and list size
end
define plist_member
if $argc == 0
help plist_member
else
set $head = &$arg0._M_impl._M_node
set $current = $arg0._M_impl._M_node._M_next
set $size = 0
while $current != $head
if $argc == 3
printf "elem[%u]: ", $size
p (*($arg1*)($current + 1)).$arg2
end
if $argc == 4
if $size == $arg3
printf "elem[%u]: ", $size
p (*($arg1*)($current + 1)).$arg2
end
end
set $current = $current._M_next
set $size++
end
printf "List size = %u \n", $size
if $argc == 1
printf "List "
whatis $arg0
printf "Use plist_member <variable_name> <element_type> <member> to see the elements in the list.\n"
end
end
end
document plist_member
Prints std::list<T> information.
Syntax: plist <list> <T> <idx>: Prints list size, if T defined all elements or just element at idx
Examples:
plist_member l int member - prints all elements and list size
plist_member l int member 2 - prints the third element in the list (if exists) and list size
end
#
# std::map and std::multimap
#
define pmap
if $argc == 0
help pmap
else
set $tree = $arg0
set $i = 0
set $node = $tree._M_t._M_impl._M_header._M_left
set $end = $tree._M_t._M_impl._M_header
set $tree_size = $tree._M_t._M_impl._M_node_count
if $argc == 1
printf "Map "
whatis $tree
printf "Use pmap <variable_name> <left_element_type> <right_element_type> to see the elements in the map.\n"
end
if $argc == 3
while $i < $tree_size
set $value = (void *)($node + 1)
printf "elem[%u].left: ", $i
p *($arg1*)$value
set $value = $value + sizeof($arg1)
printf "elem[%u].right: ", $i
p *($arg2*)$value
if $node._M_right != 0
set $node = $node._M_right
while $node._M_left != 0
set $node = $node._M_left
end
else
set $tmp_node = $node._M_parent
while $node == $tmp_node._M_right
set $node = $tmp_node
set $tmp_node = $tmp_node._M_parent
end
if $node._M_right != $tmp_node
set $node = $tmp_node
end
end
set $i++
end
end
if $argc == 4
set $idx = $arg3
set $ElementsFound = 0
while $i < $tree_size
set $value = (void *)($node + 1)
if *($arg1*)$value == $idx
printf "elem[%u].left: ", $i
p *($arg1*)$value
set $value = $value + sizeof($arg1)
printf "elem[%u].right: ", $i
p *($arg2*)$value
set $ElementsFound++
end
if $node._M_right != 0
set $node = $node._M_right
while $node._M_left != 0
set $node = $node._M_left
end
else
set $tmp_node = $node._M_parent
while $node == $tmp_node._M_right
set $node = $tmp_node
set $tmp_node = $tmp_node._M_parent
end
if $node._M_right != $tmp_node
set $node = $tmp_node
end
end
set $i++
end
printf "Number of elements found = %u\n", $ElementsFound
end
if $argc == 5
set $idx1 = $arg3
set $idx2 = $arg4
set $ElementsFound = 0
while $i < $tree_size
set $value = (void *)($node + 1)
set $valueLeft = *($arg1*)$value
set $valueRight = *($arg2*)($value + sizeof($arg1))
if $valueLeft == $idx1 && $valueRight == $idx2
printf "elem[%u].left: ", $i
p $valueLeft
printf "elem[%u].right: ", $i
p $valueRight
set $ElementsFound++
end
if $node._M_right != 0
set $node = $node._M_right
while $node._M_left != 0
set $node = $node._M_left
end
else
set $tmp_node = $node._M_parent
while $node == $tmp_node._M_right
set $node = $tmp_node
set $tmp_node = $tmp_node._M_parent
end
if $node._M_right != $tmp_node
set $node = $tmp_node
end
end
set $i++
end
printf "Number of elements found = %u\n", $ElementsFound
end
printf "Map size = %u\n", $tree_size
end
end
document pmap
Prints std::map<TLeft and TRight> or std::multimap<TLeft and TRight> information. Works for std::multimap as well.
Syntax: pmap <map> <TtypeLeft> <TypeRight> <valLeft> <valRight>: Prints map size, if T defined all elements or just element(s) with val(s)
Examples:
pmap m - prints map size and definition
pmap m int int - prints all elements and map size
pmap m int int 20 - prints the element(s) with left-value = 20 (if any) and map size
pmap m int int 20 200 - prints the element(s) with left-value = 20 and right-value = 200 (if any) and map size
end
define pmap_member
if $argc == 0
help pmap_member
else
set $tree = $arg0
set $i = 0
set $node = $tree._M_t._M_impl._M_header._M_left
set $end = $tree._M_t._M_impl._M_header
set $tree_size = $tree._M_t._M_impl._M_node_count
if $argc == 1
printf "Map "
whatis $tree
printf "Use pmap <variable_name> <left_element_type> <right_element_type> to see the elements in the map.\n"
end
if $argc == 5
while $i < $tree_size
set $value = (void *)($node + 1)
printf "elem[%u].left: ", $i
p (*($arg1*)$value).$arg2
set $value = $value + sizeof($arg1)
printf "elem[%u].right: ", $i
p (*($arg3*)$value).$arg4
if $node._M_right != 0
set $node = $node._M_right
while $node._M_left != 0
set $node = $node._M_left
end
else
set $tmp_node = $node._M_parent
while $node == $tmp_node._M_right
set $node = $tmp_node
set $tmp_node = $tmp_node._M_parent
end
if $node._M_right != $tmp_node
set $node = $tmp_node
end
end
set $i++
end
end
if $argc == 6
set $idx = $arg5
set $ElementsFound = 0
while $i < $tree_size
set $value = (void *)($node + 1)
if *($arg1*)$value == $idx
printf "elem[%u].left: ", $i
p (*($arg1*)$value).$arg2
set $value = $value + sizeof($arg1)
printf "elem[%u].right: ", $i
p (*($arg3*)$value).$arg4
set $ElementsFound++
end
if $node._M_right != 0
set $node = $node._M_right
while $node._M_left != 0
set $node = $node._M_left
end
else
set $tmp_node = $node._M_parent
while $node == $tmp_node._M_right
set $node = $tmp_node
set $tmp_node = $tmp_node._M_parent
end
if $node._M_right != $tmp_node
set $node = $tmp_node
end
end
set $i++
end
printf "Number of elements found = %u\n", $ElementsFound
end
printf "Map size = %u\n", $tree_size
end
end
document pmap_member
Prints std::map<TLeft and TRight> or std::multimap<TLeft and TRight> information. Works for std::multimap as well.
Syntax: pmap <map> <TtypeLeft> <TypeRight> <valLeft> <valRight>: Prints map size, if T defined all elements or just element(s) with val(s)
Examples:
pmap_member m class1 member1 class2 member2 - prints class1.member1 : class2.member2
pmap_member m class1 member1 class2 member2 lvalue - prints class1.member1 : class2.member2 where class1 == lvalue
end
#
# std::set and std::multiset
#
define pset
if $argc == 0
help pset
else
set $tree = $arg0
set $i = 0
set $node = $tree._M_t._M_impl._M_header._M_left
set $end = $tree._M_t._M_impl._M_header
set $tree_size = $tree._M_t._M_impl._M_node_count
if $argc == 1
printf "Set "
whatis $tree
printf "Use pset <variable_name> <element_type> to see the elements in the set.\n"
end
if $argc == 2
while $i < $tree_size
set $value = (void *)($node + 1)
printf "elem[%u]: ", $i
p *($arg1*)$value
if $node._M_right != 0
set $node = $node._M_right
while $node._M_left != 0
set $node = $node._M_left
end
else
set $tmp_node = $node._M_parent
while $node == $tmp_node._M_right
set $node = $tmp_node
set $tmp_node = $tmp_node._M_parent
end
if $node._M_right != $tmp_node
set $node = $tmp_node
end
end
set $i++
end
end
if $argc == 3
set $idx = $arg2
set $ElementsFound = 0
while $i < $tree_size
set $value = (void *)($node + 1)
if *($arg1*)$value == $idx
printf "elem[%u]: ", $i
p *($arg1*)$value
set $ElementsFound++
end
if $node._M_right != 0
set $node = $node._M_right
while $node._M_left != 0
set $node = $node._M_left
end
else
set $tmp_node = $node._M_parent
while $node == $tmp_node._M_right
set $node = $tmp_node
set $tmp_node = $tmp_node._M_parent
end
if $node._M_right != $tmp_node
set $node = $tmp_node
end
end
set $i++
end
printf "Number of elements found = %u\n", $ElementsFound
end
printf "Set size = %u\n", $tree_size
end
end
document pset
Prints std::set<T> or std::multiset<T> information. Works for std::multiset as well.
Syntax: pset <set> <T> <val>: Prints set size, if T defined all elements or just element(s) having val
Examples:
pset s - prints set size and definition
pset s int - prints all elements and the size of s
pset s int 20 - prints the element(s) with value = 20 (if any) and the size of s
end
#
# std::dequeue
#
define pdequeue
if $argc == 0
help pdequeue
else
set $size = 0
set $start_cur = $arg0._M_impl._M_start._M_cur
set $start_last = $arg0._M_impl._M_start._M_last
set $start_stop = $start_last
while $start_cur != $start_stop
p *$start_cur
set $start_cur++
set $size++
end
set $finish_first = $arg0._M_impl._M_finish._M_first
set $finish_cur = $arg0._M_impl._M_finish._M_cur
set $finish_last = $arg0._M_impl._M_finish._M_last
if $finish_cur < $finish_last
set $finish_stop = $finish_cur
else
set $finish_stop = $finish_last
end
while $finish_first != $finish_stop
p *$finish_first
set $finish_first++
set $size++
end
printf "Dequeue size = %u\n", $size
end
end
document pdequeue
Prints std::dequeue<T> information.
Syntax: pdequeue <dequeue>: Prints dequeue size, if T defined all elements
Deque elements are listed "left to right" (left-most stands for front and right-most stands for back)
Example:
pdequeue d - prints all elements and size of d
end
#
# std::stack
#
define pstack
if $argc == 0
help pstack
else
set $start_cur = $arg0.c._M_impl._M_start._M_cur
set $finish_cur = $arg0.c._M_impl._M_finish._M_cur
set $size = $finish_cur - $start_cur
set $i = $size - 1
while $i >= 0
p *($start_cur + $i)
set $i--
end
printf "Stack size = %u\n", $size
end
end
document pstack
Prints std::stack<T> information.
Syntax: pstack <stack>: Prints all elements and size of the stack
Stack elements are listed "top to buttom" (top-most element is the first to come on pop)
Example:
pstack s - prints all elements and the size of s
end
#
# std::queue
#
define pqueue
if $argc == 0
help pqueue
else
set $start_cur = $arg0.c._M_impl._M_start._M_cur
set $finish_cur = $arg0.c._M_impl._M_finish._M_cur
set $size = $finish_cur - $start_cur
set $i = 0
while $i < $size
p *($start_cur + $i)
set $i++
end
printf "Queue size = %u\n", $size
end
end
document pqueue
Prints std::queue<T> information.
Syntax: pqueue <queue>: Prints all elements and the size of the queue
Queue elements are listed "top to bottom" (top-most element is the first to come on pop)
Example:
pqueue q - prints all elements and the size of q
end
#
# std::priority_queue
#
define ppqueue
if $argc == 0
help ppqueue
else
set $size = $arg0.c._M_impl._M_finish - $arg0.c._M_impl._M_start
set $capacity = $arg0.c._M_impl._M_end_of_storage - $arg0.c._M_impl._M_start
set $i = $size - 1
while $i >= 0
p *($arg0.c._M_impl._M_start + $i)
set $i--
end
printf "Priority queue size = %u\n", $size
printf "Priority queue capacity = %u\n", $capacity
end
end
document ppqueue
Prints std::priority_queue<T> information.
Syntax: ppqueue <priority_queue>: Prints all elements, size and capacity of the priority_queue
Priority_queue elements are listed "top to buttom" (top-most element is the first to come on pop)
Example:
ppqueue pq - prints all elements, size and capacity of pq
end
#
# std::bitset
#
define pbitset
if $argc == 0
help pbitset
else
p /t $arg0._M_w
end
end
document pbitset
Prints std::bitset<n> information.
Syntax: pbitset <bitset>: Prints all bits in bitset
Example:
pbitset b - prints all bits in b
end
#
# std::string
#
define pstring
if $argc == 0
help pstring
else
printf "String \t\t\t= \"%s\"\n", $arg0._M_data()
printf "String size/length \t= %u\n", $arg0._M_rep()._M_length
printf "String capacity \t= %u\n", $arg0._M_rep()._M_capacity
printf "String ref-count \t= %d\n", $arg0._M_rep()._M_refcount
end
end
document pstring
Prints std::string information.
Syntax: pstring <string>
Example:
pstring s - Prints content, size/length, capacity and ref-count of string s
end
#
# std::wstring
#
define pwstring
if $argc == 0
help pwstring
else
call printf("WString \t\t= \"%ls\"\n", $arg0._M_data())
printf "WString size/length \t= %u\n", $arg0._M_rep()._M_length
printf "WString capacity \t= %u\n", $arg0._M_rep()._M_capacity
printf "WString ref-count \t= %d\n", $arg0._M_rep()._M_refcount
end
end
document pwstring
Prints std::wstring information.
Syntax: pwstring <wstring>
Example:
pwstring s - Prints content, size/length, capacity and ref-count of wstring s
end
#
# C++ related beautifiers (optional)
#
set height 0
set history size 10000
set history filename ~/.gdb_history
set history save on
#退出時不顯示提示信息
set confirm off
#按照派生類型打印對象
set print object on
#打印數組的索引下標
set print array-indexes on
#每行打印一個結構體成員
set print pretty on
set print union on
set print address on
set print static-members on
set print vtbl on
set print demangle on
set demangle-style gnu-v3
set print sevenbit-strings off
set step-mode on
shell rm -f ./gdb.log
set logging off
set logging file ./gdb.log
set logging on
python
import sys
import os
p = os.path.expanduser('/home/shihyu/.mybin/gdb_8.1/python')
print(p)
if os.path.exists(p):
sys.path.insert(0, p)
from libstdcxx.v6.printers import register_libstdcxx_printers
register_libstdcxx_printers(None)
end
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