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wsh with ARM
Jonathan Brossard edited this page Aug 14, 2016
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WCC compiles natively ARM. Follow the standard build instructions from README.md to get started.
It is possible to use the WCC toolchain on x86_64 intel processors to process ARM binaries.
In particular, wsh allows loading and executing ARM functions transparently from x86_64. Under the hood, this mode leverages the amazing user mode emulation of qemu to perform the binary translation from ARM to Intel.
When wsh is cross compiled this way, the analysed ARM binaries, the wsh shell cross compiled for ARM and the qemu binary translator share a single process in memory and can use the filesystem and normal IPC with other processes on the system. Yes, this is batshit crazy.
The remaining of this page will guide you to the steps involved in getting the Witchcraft Compiler Collection cross compiled for ARM and get your first ARM applications debugged within wsh.
Registering a custom binfmt_misc for qemu-arm-static allows to run ARM applications normally on a Linux x86_64 processor. The mechanism happens at kernel level, the interpreter chosen by the kernel for ARM binaries once this binfmt_misc is registered will be the qemu-arm-static binary.
You may like to read the manpage for the update-binfmts utility:
man update-binfmts
To register a binfmt_misc for ARM, you can run the following command as root:
echo ':arm:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\x00\xff\xfe\xff\xff\xff:/usr/bin/qemu-arm-static:OC' > /proc/sys/fs/binfmt_misc/register
You can verify this last command worked properly by displaying the associated entry in /proc:
root@blackbox:/proc/sys/fs/binfmt_misc# cat qemu-arm
enabled
interpreter /usr/bin/qemu-arm-static
flags: OC
offset 0
magic 7f454c4601010100000000000000000002002800
mask ffffffffffffff00fffffffffffffffffeffffff
root@blackbox:/proc/sys/fs/binfmt_misc#
You can now run ARM applications directly as normal Intel programs : qemu-arm-static will transparently handle the binary translation.
More examples are available at https://wiki.debian.org/QemuUserEmulation
Let's first download a ARM filesystem :
jonathan@blackbox:/home2/linaro$ wget -c https://releases.linaro.org/14.04/ubuntu/panda/linaro-saucy-developer-20140410-652.tar.gz
This should download a file named linaro-saucy-developer-20140410-652.tar.gz in the current directory. You will next need to unpack it using the following command:
jonathan@blackbox:/home2/linaro$ tar -xvzf linaro-saucy-developer-20140410-652.tar.gz
This will unpack the chroot environment into a new directory named binary the current directory.
Let's rename the output folder to simply chroot:
jonathan@blackbox:/home2/linaro$ mv binary/ chroot/
jonathan@blackbox:/home2/linaro$
We will now download the source code of wcc into the arm chroot:
jonathan@blackbox:/home2/linaro$ cd chroot
jonathan@blackbox:/home2/linaro/chroot$ git clone https://github.com/endrazine/wcc.git
Cloning into 'wcc'...
remote: Counting objects: 672, done.
remote: Compressing objects: 100% (327/327), done.
remote: Total 672 (delta 361), reused 648 (delta 337), pack-reused 0
Receiving objects: 100% (672/672), 7.09 MiB | 1.40 MiB/s, done.
Resolving deltas: 100% (361/361), done.
Checking connectivity... done.
jonathan@blackbox:/home2/linaro/chroot$
The benefit of having a chroot is to facilitate access to shared libraries and their dependencies. It is however not strictly required to analyze ARM binaries : wsh can be cross compiled from Intel using simply a cross compiler, and qemu-arm-static can be instructed to look for ARM shared libraries in a specific directory. This is enough to perform ARM debugging on x86_64 without a chroot.
Let's not create a small script to help us automate the chrooting process:
jonathan@blackbox:/home2/linaro$ cat run.sh
#!/bin/sh
#mount /proc (only once)
if [ -e ./chroot/proc/1 ]
then
echo "* /proc already mounted"
else
echo "* mounting /proc"
mkdir -p ./chroot/proc
sudo mount -t proc proc ./chroot/proc/
fi
sudo cp /etc/resolv.conf ./chroot/etc/resolv.conf
sudo chroot ./chroot/
jonathan@blackbox:/home2/linaro$
We can now run this script and enter the ARM chroot. Qemu-arm-static will underneath perform the JIT binary translation to Intel transparently for us:
jonathan@blackbox:/home2/linaro$ ./run.sh
* /proc already mounted
root@blackbox:/#
root@blackbox:/# cat /etc/issue.net
Linaro 14.01
root@blackbox:/# uname -a
Linux blackbox 2.6.32 #111-Ubuntu SMP Fri Nov 6 18:17:06 UTC 2015 armv7l armv7l armv7l GNU/Linux
root@blackbox:/#
We are now running ARM binaries on top of our Linux cpu, without a full VM.
You will need to install some dependencies to get WCC compiled inside your chroot. In addition to a working c toolchain, you will need the binutils headers, the libc headers, lua, and libiberty with its headers.
For this demo, I downloaded and installed manually the following packages:
binutils-dev_2.24-5ubuntu3_armhf.deb libc6-dev-armel-cross_2.15-0ubuntu9cross1.82_all.deb lua5.2_5.2.3-1.1_armhf.deb libiberty-dev_20160215-1_armhf.deb
You can use the commands below to download all the dependencies into /tmp/dependencies and get them installed inside your ARM chroot:
mkdir -p /tmp/dependencies
cd /tmp/dependencies
wget -c https://launchpad.net/ubuntu/+source/binutils/2.24-5ubuntu3/+build/5912085/+files/binutils-dev_2.24-5ubuntu3_armhf.deb
wget -c http://archive.ubuntu.com/ubuntu/pool/universe/a/armel-cross-toolchain-base/libc6-dev-armel-cross_2.15-0ubuntu9cross1.82_all.deb
wget -c http://ftp.gnome.org/mirror/raspbian/raspbian/pool/main/l/lua5.2/lua5.2_5.2.3-1.1_armhf.deb
wget -c http://ftp.gnome.org/mirror/cdimage/snapshot/20050323/Debian/pool/main/libi/libiberty/libiberty-dev_20160215-1_armhf.deb
sudo dpkg -i *.deb
cd -
We are now ready to build WCC on ARM.
From the root wcc directory, simply type:
make
Inside the chroot, we can now run wsh and load ELF binaries transparently :
root@blackbox:/# wsh /lib/arm-linux-gnueabihf/libssl.so.1.0.0
> libs()
/lib/arm-linux-gnueabihf/libc.so.6
/lib/ld-linux-armhf.so.3
/lib/arm-linux-gnueabihf/libssl.so.1.0.0
/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
/lib/arm-linux-gnueabihf/libz.so.1
-- Total: 5 libraries
> a=getpid()
> print(a)
12544
>
At this point, the getpid() function was really provided by the ARM libc, and translated on the fly by qemu into x86_64 binary code that our real cpu can execute.
Now, on an other shell outside the chroot, let's examine the mapping of the process with a pid of 12544.
jonathan@blackbox:~$ sudo cat /proc/12544/maps
60000000-601f9000 r-xp 00000000 08:02 2360785 /home2/linaro/chroot/usr/bin/qemu-arm-static
602f8000-60330000 rw-p 002f8000 08:02 2360785 /home2/linaro/chroot/usr/bin/qemu-arm-static
60330000-60336000 rw-p 00000000 00:00 0
60336000-62337000 rwxp 00000000 00:00 0
62337000-62397000 rw-p 00000000 00:00 0
63df5000-63e80000 rw-p 00000000 00:00 0 [heap]
7f15dfe91000-7f15dff4e000 rw-p 00000000 00:00 0
7f15dff4e000-7f15dff56000 ---p 00000000 00:00 0
7f15dff56000-7f15dffa8000 r-xp 00000000 08:02 2361314 /home2/linaro/chroot/usr/bin/wsh
7f15dffa8000-7f15dffaf000 ---p 00000000 00:00 0
7f15dffaf000-7f15dffb1000 r--p 00051000 08:02 2361314 /home2/linaro/chroot/usr/bin/wsh
7f15dffb1000-7f15dffb2000 rw-p 00053000 08:02 2361314 /home2/linaro/chroot/usr/bin/wsh
7f15dffb2000-7f15e04c2000 rw-p 00000000 00:00 0
7f15e04c2000-7f15f60ae000 ---p 00000000 00:00 0
7f15f60ae000-7f15f60b0000 r--p 00000000 00:00 0
7f15f60b0000-7f15f60b1000 ---p 00000000 00:00 0
7f15f60b1000-7f16061af000 ---p 00000000 00:00 0
7f16061af000-7f16061b1000 r--p 00000000 00:00 0
7f16061b1000-7f16061b2000 ---p 00000000 00:00 0
7f16061b2000-7f16162b0000 ---p 00000000 00:00 0
7f16162b0000-7f16162b2000 r--p 00000000 00:00 0
7f16162b2000-7f16162b3000 ---p 00000000 00:00 0
7f16162b3000-7f16263b1000 ---p 00000000 00:00 0
7f16263b1000-7f16263b3000 r--p 00000000 00:00 0
7f16263b3000-7f16263b4000 ---p 00000000 00:00 0
7f16263b4000-7f16364b2000 ---p 00000000 00:00 0
7f16364b2000-7f16364b4000 r--p 00000000 00:00 0
7f16364b4000-7f16364b5000 ---p 00000000 00:00 0
7f16364b5000-7f16465b3000 ---p 00000000 00:00 0
7f16465b3000-7f16465b5000 r--p 00000000 00:00 0
7f16465b5000-7f16465b6000 ---p 00000000 00:00 0
7f16465b6000-7f16566b5000 ---p 00000000 00:00 0
7f16566b5000-7f16566b6000 r--p 00000000 00:00 0
7f16566b6000-7f16667b6000 ---p 00000000 00:00 0
7f16667b6000-7f16667b7000 r--p 00000000 00:00 0
7f16667b7000-7f16768b7000 ---p 00000000 00:00 0
7f16768b7000-7f16768b8000 r--p 00000000 00:00 0
7f16768b8000-7f16869b8000 ---p 00000000 00:00 0
7f16869b8000-7f16869b9000 r--p 00000000 00:00 0
7f16869b9000-7f1696ab9000 ---p 00000000 00:00 0
7f1696ab9000-7f1696aba000 r--p 00000000 00:00 0
7f1696aba000-7f16a6bba000 ---p 00000000 00:00 0
7f16a6bba000-7f16a6bbb000 r--p 00000000 00:00 0
7f16a6bbb000-7f16d60da000 ---p 00000000 00:00 0
7f16d60da000-7f16d61dd000 rw-p 00000000 00:00 0
7f16d61dd000-7f16d6281000 ---p 00000000 00:00 0
7f16d6281000-7f16d6294000 r--s 00000000 08:02 2377268 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libz.so.1.2.8
7f16d6294000-7f16d6397000 r--s 00000000 08:02 2377290 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
7f16d6397000-7f16d63ce000 r--s 00000000 08:02 2377289 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libssl.so.1.0.0
7f16d63ce000-7f16d63e6000 r--s 00000000 08:02 2377175 /home2/linaro/chroot/lib/arm-linux-gnueabihf/ld-2.17.so
7f16d63e6000-7f16d64c1000 r--s 00000000 08:02 2377190 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libc-2.17.so
7f16d64c1000-7f16d64c4000 r--s 00000000 08:02 2377168 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libdl-2.17.so
7f16d64c4000-7f16d64d5000 r-xp 00000000 08:02 2377268 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libz.so.1.2.8
7f16d64d5000-7f16d64dd000 ---p 00011000 08:02 2377268 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libz.so.1.2.8
7f16d64dd000-7f16d64de000 r--p 00011000 08:02 2377268 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libz.so.1.2.8
7f16d64de000-7f16d64df000 rw-p 00012000 08:02 2377268 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libz.so.1.2.8
7f16d64df000-7f16d65ce000 r-xp 00000000 08:02 2377290 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
7f16d65ce000-7f16d65d6000 ---p 000ef000 08:02 2377290 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
7f16d65d6000-7f16d65e3000 r--p 000ef000 08:02 2377290 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
7f16d65e3000-7f16d65ea000 rw-p 000fc000 08:02 2377290 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libcrypto.so.1.0.0
7f16d65ea000-7f16d65ed000 rw-p 00000000 00:00 0
7f16d65ed000-7f16d65f4000 ---p 00000000 00:00 0
7f16d65f4000-7f16d6625000 r-xp 00000000 08:02 2377289 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libssl.so.1.0.0
7f16d6625000-7f16d662d000 ---p 00031000 08:02 2377289 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libssl.so.1.0.0
7f16d662d000-7f16d662f000 r--p 00031000 08:02 2377289 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libssl.so.1.0.0
7f16d662f000-7f16d6633000 rw-p 00033000 08:02 2377289 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libssl.so.1.0.0
7f16d6633000-7f16d6634000 ---p 00000000 00:00 0
7f16d6634000-7f16d6635000 rw-p 00000000 00:00 0
7f16d6635000-7f16d670b000 r-xp 00000000 08:02 2377190 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libc-2.17.so
7f16d670b000-7f16d6713000 ---p 000d6000 08:02 2377190 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libc-2.17.so
7f16d6713000-7f16d6715000 r--p 000d6000 08:02 2377190 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libc-2.17.so
7f16d6715000-7f16d6716000 rw-p 000d8000 08:02 2377190 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libc-2.17.so
7f16d6716000-7f16d6719000 rw-p 00000000 00:00 0
7f16d6719000-7f16d671b000 r-xp 00000000 08:02 2377168 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libdl-2.17.so
7f16d671b000-7f16d6722000 ---p 00002000 08:02 2377168 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libdl-2.17.so
7f16d6722000-7f16d6723000 r--p 00001000 08:02 2377168 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libdl-2.17.so
7f16d6723000-7f16d6724000 rw-p 00002000 08:02 2377168 /home2/linaro/chroot/lib/arm-linux-gnueabihf/libdl-2.17.so
7f16d6724000-7f16d672b000 ---p 00000000 00:00 0
7f16d672b000-7f16d672d000 rw-p 00000000 00:00 0
7f16d672d000-7f16d6744000 r-xp 00000000 08:02 2377175 /home2/linaro/chroot/lib/arm-linux-gnueabihf/ld-2.17.so
7f16d6744000-7f16d674b000 ---p 00000000 00:00 0
7f16d674b000-7f16d674c000 r--p 00016000 08:02 2377175 /home2/linaro/chroot/lib/arm-linux-gnueabihf/ld-2.17.so
7f16d674c000-7f16d674d000 rw-p 00017000 08:02 2377175 /home2/linaro/chroot/lib/arm-linux-gnueabihf/ld-2.17.so
7f16d674d000-7f16d674e000 ---p 00000000 00:00 0
7f16d674e000-7f16da34e000 rw-p 00000000 00:00 0
7f16dff3e000-7f16dff3f000 r--p 00000000 00:00 0
7ffd539a2000-7ffd539c3000 rw-p 00000000 00:00 0 [stack]
7ffd539e2000-7ffd539e4000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
jonathan@blackbox:~$
We can see qemu-arm-static (and Intel x86_64 executable), /home2/linaro/chroot/usr/bin/wsh (an ARM executable), libssl.so and its dependencies (ARM shared libraries) all sharing a single address space.
There is also no Intel libc on the address space, so our call to getpid() in the previous demo actually came from the ARM C library.
Debugging should now work as usual, transparently converting ARM into Intel x86_64 thanks to qemu. Wsh does its best to hide its presence, and so does qemu. For instance, displaying the section headers provides the following output:
> shdrs()
-- Total: 145 sections
0000f67cb134-0000f67cb158 r-- 36 /lib/arm-linux-gnueabihf/libdl.so.2 .note.gnu.build-id PT_NOTE r--
0000f67cb158-0000f67cb178 r-- 32 /lib/arm-linux-gnueabihf/libdl.so.2 .note.ABI-tag PT_NOTE r--
0000f67cb178-0000f67cb210 r-- 152 /lib/arm-linux-gnueabihf/libdl.so.2 .gnu.hash PT_NOTE r--
0000f67cb210-0000f67cb4a0 r-- 656 /lib/arm-linux-gnueabihf/libdl.so.2 .dynsym PT_LOAD r-x
0000f67cb4a0-0000f67cb68d r-- 493 /lib/arm-linux-gnueabihf/libdl.so.2 .dynstr PT_LOAD r-x
0000f67cb68e-0000f67cb6e0 r-- 82 /lib/arm-linux-gnueabihf/libdl.so.2 .gnu.version PT_LOAD r-x
0000f67cb6e0-0000f67cb73c r-- 92 /lib/arm-linux-gnueabihf/libdl.so.2 .gnu.version_d PT_LOAD r-x
0000f67cb73c-0000f67cb78c r-- 80 /lib/arm-linux-gnueabihf/libdl.so.2 .gnu.version_r PT_LOAD r-x
0000f67cb78c-0000f67cb81c r-- 144 /lib/arm-linux-gnueabihf/libdl.so.2 .rel.dyn PT_LOAD r-x
0000f67cb81c-0000f67cb8a4 r-- 136 /lib/arm-linux-gnueabihf/libdl.so.2 .rel.plt PT_LOAD r-x
0000f67cb8a4-0000f67cb8b0 r-x 12 /lib/arm-linux-gnueabihf/libdl.so.2 .init PT_LOAD r-x
0000f67cb8b0-0000f67cb9a0 r-x 240 /lib/arm-linux-gnueabihf/libdl.so.2 .plt PT_LOAD r-x
0000f67cb9a0-0000f67cc258 r-x 2232 /lib/arm-linux-gnueabihf/libdl.so.2 .text PT_LOAD r-x
0000f67cc258-0000f67cc260 r-x 8 /lib/arm-linux-gnueabihf/libdl.so.2 .fini PT_LOAD r-x
0000f67cc260-0000f67cc2e0 r-- 128 /lib/arm-linux-gnueabihf/libdl.so.2 .rodata PT_LOAD r-x
0000f67cc2e0-0000f67cc2fc r-- 28 /lib/arm-linux-gnueabihf/libdl.so.2 .interp PT_INTERP r--
0000f67cc2fc-0000f67cc300 r-- 4 /lib/arm-linux-gnueabihf/libdl.so.2 .eh_frame PT_INTERP r--
0000f67cc300-0000f67cc474 r-- 372 /lib/arm-linux-gnueabihf/libdl.so.2 .hash PT_LOAD r-x
0000f67d4ee4-0000f67d4eec rw- 8 /lib/arm-linux-gnueabihf/libdl.so.2 .init_array PT_GNU_RELRO r--
0000f67d4eec-0000f67d4ef4 rw- 8 /lib/arm-linux-gnueabihf/libdl.so.2 .fini_array PT_GNU_RELRO r--
0000f67d4ef4-0000f67d4ef8 rw- 4 /lib/arm-linux-gnueabihf/libdl.so.2 .jcr PT_GNU_RELRO r--
0000f67d4ef8-0000f67d5000 rw- 264 /lib/arm-linux-gnueabihf/libdl.so.2 .dynamic PT_DYNAMIC rw-
0000f67d5000-0000f67d5084 rw- 132 /lib/arm-linux-gnueabihf/libdl.so.2 .got PT_DYNAMIC rw-
0000f67d5084-0000f67d5088 rw- 4 /lib/arm-linux-gnueabihf/libdl.so.2 .data PT_LOAD rw-
0000f67d5088-0000f67d50b8 rw- 48 /lib/arm-linux-gnueabihf/libdl.so.2 .bss PT_LOAD rw-
0000f66e7174-0000f66e7198 r-- 36 /lib/arm-linux-gnueabihf/libc.so.6 .note.gnu.build-id PT_NOTE r--
0000f66e7198-0000f66e71b8 r-- 32 /lib/arm-linux-gnueabihf/libc.so.6 .note.ABI-tag PT_NOTE r--
0000f66e71b8-0000f66eabd8 r-- 14880 /lib/arm-linux-gnueabihf/libc.so.6 .gnu.hash PT_NOTE r--
0000f66eabd8-0000f66f3578 r-- 35232 /lib/arm-linux-gnueabihf/libc.so.6 .dynsym PT_LOAD r-x
0000f66f3578-0000f66f8ece r-- 22870 /lib/arm-linux-gnueabihf/libc.so.6 .dynstr PT_LOAD r-x
0000f66f8ece-0000f66fa002 r-- 4404 /lib/arm-linux-gnueabihf/libc.so.6 .gnu.version PT_LOAD r-x
0000f66fa004-0000f66fa234 r-- 560 /lib/arm-linux-gnueabihf/libc.so.6 .gnu.version_d PT_LOAD r-x
0000f66fa234-0000f66fa264 r-- 48 /lib/arm-linux-gnueabihf/libc.so.6 .gnu.version_r PT_LOAD r-x
0000f66fa264-0000f66fca54 r-- 10224 /lib/arm-linux-gnueabihf/libc.so.6 .rel.dyn PT_LOAD r-x
0000f66fca54-0000f66fcaa4 r-- 80 /lib/arm-linux-gnueabihf/libc.so.6 .rel.plt PT_LOAD r-x
0000f66fcaa4-0000f66fcb38 r-x 148 /lib/arm-linux-gnueabihf/libc.so.6 .plt PT_LOAD r-x
0000f66fcb40-0000f679d178 r-x 656952 /lib/arm-linux-gnueabihf/libc.so.6 .text PT_LOAD r-x
0000f679d178-0000f679dad8 r-x 2400 /lib/arm-linux-gnueabihf/libc.so.6 __libc_freeres_fn PT_LOAD r-x
0000f679dad8-0000f679dc58 r-x 384 /lib/arm-linux-gnueabihf/libc.so.6 __libc_thread_freeres_fn PT_LOAD r-x
0000f679dc58-0000f67b74e1 r-- 104585 /lib/arm-linux-gnueabihf/libc.so.6 .rodata PT_LOAD r-x
0000f67b74e4-0000f67b7500 r-- 28 /lib/arm-linux-gnueabihf/libc.so.6 .interp PT_INTERP r--
0000f67b7500-0000f67b8138 r-- 3128 /lib/arm-linux-gnueabihf/libc.so.6 .ARM.extab PT_INTERP r--
0000f67b8138-0000f67b9598 r-- 5216 /lib/arm-linux-gnueabihf/libc.so.6 .ARM.exidx Unknown: 7000000100000000
r--
0000f67b9598-0000f67b959c r-- 4 /lib/arm-linux-gnueabihf/libc.so.6 .eh_frame Unknown: 7000000100000000
r--
0000f67b959c-0000f67bc7f0 r-- 12884 /lib/arm-linux-gnueabihf/libc.so.6 .hash PT_LOAD r-x
0000f67c56cc-0000f67c56d4 rw- 8 /lib/arm-linux-gnueabihf/libc.so.6 .tdata PT_GNU_RELRO r--
0000f67c56d4-0000f67c570c rw- 56 /lib/arm-linux-gnueabihf/libc.so.6 .tbss PT_GNU_RELRO r--
0000f67c56d4-0000f67c574c rw- 120 /lib/arm-linux-gnueabihf/libc.so.6 __libc_subfreeres PT_GNU_RELRO r--
0000f67c574c-0000f67c5750 rw- 4 /lib/arm-linux-gnueabihf/libc.so.6 __libc_atexit PT_GNU_RELRO r--
0000f67c5750-0000f67c5760 rw- 16 /lib/arm-linux-gnueabihf/libc.so.6 __libc_thread_subfreeres PT_GNU_RELRO r--
0000f67c5760-0000f67c6f28 rw- 6088 /lib/arm-linux-gnueabihf/libc.so.6 .data.rel.ro PT_GNU_RELRO r--
0000f67c6f28-0000f67c7000 rw- 216 /lib/arm-linux-gnueabihf/libc.so.6 .dynamic PT_DYNAMIC rw-
0000f67c7000-0000f67c7190 rw- 400 /lib/arm-linux-gnueabihf/libc.so.6 .got PT_DYNAMIC rw-
0000f67c7190-0000f67c7e04 rw- 3188 /lib/arm-linux-gnueabihf/libc.so.6 .data PT_LOAD rw-
0000f67c7e08-0000f67ca588 rw- 10112 /lib/arm-linux-gnueabihf/libc.so.6 .bss PT_LOAD rw-
0000f67df114-0000f67df138 r-- 36 /lib/ld-linux-armhf.so.3 .note.gnu.build-id PT_NOTE r--
0000f67df138-0000f67df1f4 r-- 188 /lib/ld-linux-armhf.so.3 .hash PT_NOTE r--
0000f67df1f4-0000f67df2cc r-- 216 /lib/ld-linux-armhf.so.3 .gnu.hash PT_LOAD r-x
0000f67df2cc-0000f67df48c r-- 448 /lib/ld-linux-armhf.so.3 .dynsym PT_LOAD r-x
0000f67df48c-0000f67df617 r-- 395 /lib/ld-linux-armhf.so.3 .dynstr PT_LOAD r-x
0000f67df618-0000f67df650 r-- 56 /lib/ld-linux-armhf.so.3 .gnu.version PT_LOAD r-x
0000f67df650-0000f67df6ac r-- 92 /lib/ld-linux-armhf.so.3 .gnu.version_d PT_LOAD r-x
0000f67df6ac-0000f67df74c r-- 160 /lib/ld-linux-armhf.so.3 .rel.dyn PT_LOAD r-x
0000f67df74c-0000f67df77c r-- 48 /lib/ld-linux-armhf.so.3 .rel.plt PT_LOAD r-x
0000f67df77c-0000f67df7e4 r-x 104 /lib/ld-linux-armhf.so.3 .plt PT_LOAD r-x
0000f67df7f0-0000f67f1ed0 r-x 75488 /lib/ld-linux-armhf.so.3 .text PT_LOAD r-x
0000f67f1ed0-0000f67f5a8c r-- 15292 /lib/ld-linux-armhf.so.3 .rodata PT_LOAD r-x
0000f67f5a8c-0000f67f5ae0 r-- 84 /lib/ld-linux-armhf.so.3 .ARM.extab PT_LOAD r-x
0000f67f5ae0-0000f67f5b98 r-- 184 /lib/ld-linux-armhf.so.3 .ARM.exidx Unknown: 7000000100000000
r--
0000f67fdd48-0000f67fdf44 rw- 508 /lib/ld-linux-armhf.so.3 .data.rel.ro PT_GNU_RELRO r--
0000f67fdf44-0000f67fdffc rw- 184 /lib/ld-linux-armhf.so.3 .dynamic PT_DYNAMIC rw-
0000f67fe000-0000f67fe04c rw- 76 /lib/ld-linux-armhf.so.3 .got PT_GNU_RELRO r--
0000f67fe050-0000f67fe884 rw- 2100 /lib/ld-linux-armhf.so.3 .data PT_LOAD rw-
0000f67fe884-0000f67fe958 rw- 212 /lib/ld-linux-armhf.so.3 .bss PT_LOAD rw-
0000f66a60f4-0000f66a6118 r-- 36 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .note.gnu.build-id PT_NOTE r--
0000f66a6118-0000f66a6aa0 r-- 2440 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .gnu.hash PT_NOTE r--
0000f66a6aa0-0000f66a92f0 r-- 10320 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .dynsym PT_LOAD r-x
0000f66a92f0-0000f66ac100 r-- 11792 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .dynstr PT_LOAD r-x
0000f66ac100-0000f66ac60a r-- 1290 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .gnu.version PT_LOAD r-x
0000f66ac60c-0000f66ac68c r-- 128 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .gnu.version_d PT_LOAD r-x
0000f66ac68c-0000f66ac71c r-- 144 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .gnu.version_r PT_LOAD r-x
0000f66ac71c-0000f66af044 r-- 10536 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .rel.dyn PT_LOAD r-x
0000f66af044-0000f66afb4c r-- 2824 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .rel.plt PT_LOAD r-x
0000f66afb4c-0000f66afb58 r-x 12 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .init PT_LOAD r-x
0000f66afb58-0000f66b0c68 r-x 4368 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .plt PT_LOAD r-x
0000f66b0c68-0000f66d140c r-x 133028 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .text PT_LOAD r-x
0000f66d140c-0000f66d1414 r-x 8 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .fini PT_LOAD r-x
0000f66d1414-0000f66d6d6c r-- 22872 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .rodata PT_LOAD r-x
0000f66d6d6c-0000f66d6d70 r-- 4 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .eh_frame PT_LOAD r-x
0000f66df908-0000f66df90c rw- 4 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .init_array PT_GNU_RELRO r--
0000f66df90c-0000f66df910 rw- 4 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .fini_array PT_GNU_RELRO r--
0000f66df910-0000f66df914 rw- 4 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .jcr PT_GNU_RELRO r--
0000f66df914-0000f66e0ef8 rw- 5604 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .data.rel.ro PT_GNU_RELRO r--
0000f66e0ef8-0000f66e1000 rw- 264 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .dynamic PT_DYNAMIC rw-
0000f66e1000-0000f66e15f4 rw- 1524 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .got PT_DYNAMIC rw-
0000f66e15f4-0000f66e4278 rw- 11396 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .data PT_LOAD rw-
0000f66e4278-0000f66e42e8 rw- 112 /lib/arm-linux-gnueabihf/libssl.so.1.0.0 .bss PT_LOAD rw-
0000f6591114-0000f6591138 r-- 36 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .note.gnu.build-id PT_NOTE r--
0000f6591138-0000f6597944 r-- 26636 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .gnu.hash PT_NOTE r--
0000f6597944-0000f65a60a4 r-- 59232 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .dynsym PT_LOAD r-x
0000f65a60a4-0000f65b6dc9 r-- 68901 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .dynstr PT_LOAD r-x
0000f65b6dca-0000f65b8ab6 r-- 7404 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .gnu.version PT_LOAD r-x
0000f65b8ab8-0000f65b8b38 r-- 128 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .gnu.version_d PT_LOAD r-x
0000f65b8b38-0000f65b8bb8 r-- 128 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .gnu.version_r PT_LOAD r-x
0000f65b8bb8-0000f65c86a0 r-- 64232 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .rel.dyn PT_LOAD r-x
0000f65c86a0-0000f65c8a30 r-- 912 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .rel.plt PT_LOAD r-x
0000f65c8a30-0000f65c8a3c r-x 12 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .init PT_LOAD r-x
0000f65c8a3c-0000f65c8fd4 r-x 1432 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .plt PT_LOAD r-x
0000f65c9000-0000f66559c4 r-x 575940 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .text PT_LOAD r-x
0000f66559c4-0000f66559cc r-x 8 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .fini PT_LOAD r-x
0000f66559d0-0000f667fe04 r-- 173108 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .rodata PT_LOAD r-x
0000f667fe04-0000f667fe0c r-- 8 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .ARM.exidx Unknown: 7000000100000000
r--
0000f667fe0c-0000f667fe10 r-- 4 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .eh_frame Unknown: 7000000100000000
r--
0000f6688044-0000f668804c rw- 8 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .init_array PT_GNU_RELRO r--
0000f668804c-0000f6688050 rw- 4 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .fini_array PT_GNU_RELRO r--
0000f6688050-0000f6688054 rw- 4 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .jcr PT_GNU_RELRO r--
0000f6688054-0000f6694ef0 rw- 52892 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .data.rel.ro PT_GNU_RELRO r--
0000f6694ef0-0000f6695000 rw- 272 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .dynamic PT_DYNAMIC rw-
0000f6695000-0000f66956c0 rw- 1728 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .got PT_DYNAMIC rw-
0000f66956c0-0000f669b1c0 rw- 23296 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .data PT_LOAD rw-
0000f669b1c0-0000f669e644 rw- 13444 /lib/arm-linux-gnueabihf/libcrypto.so.1.0.0 .bss PT_LOAD rw-
0000f6576114-0000f6576138 r-- 36 /lib/arm-linux-gnueabihf/libz.so.1 .note.gnu.build-id PT_NOTE r--
0000f6576138-0000f65763fc r-- 708 /lib/arm-linux-gnueabihf/libz.so.1 .gnu.hash PT_NOTE r--
0000f65763fc-0000f6576b4c r-- 1872 /lib/arm-linux-gnueabihf/libz.so.1 .dynsym PT_LOAD r-x
0000f6576b4c-0000f6577099 r-- 1357 /lib/arm-linux-gnueabihf/libz.so.1 .dynstr PT_LOAD r-x
0000f657709a-0000f6577184 r-- 234 /lib/arm-linux-gnueabihf/libz.so.1 .gnu.version PT_LOAD r-x
0000f6577184-0000f6577348 r-- 452 /lib/arm-linux-gnueabihf/libz.so.1 .gnu.version_d PT_LOAD r-x
0000f6577348-0000f6577388 r-- 64 /lib/arm-linux-gnueabihf/libz.so.1 .gnu.version_r PT_LOAD r-x
0000f6577388-0000f65774a0 r-- 280 /lib/arm-linux-gnueabihf/libz.so.1 .rel.dyn PT_LOAD r-x
0000f65774a0-0000f6577540 r-- 160 /lib/arm-linux-gnueabihf/libz.so.1 .rel.plt PT_LOAD r-x
0000f6577540-0000f657754c r-x 12 /lib/arm-linux-gnueabihf/libz.so.1 .init PT_LOAD r-x
0000f657754c-0000f6577658 r-x 268 /lib/arm-linux-gnueabihf/libz.so.1 .plt PT_LOAD r-x
0000f6577658-0000f6582e54 r-x 47100 /lib/arm-linux-gnueabihf/libz.so.1 .text PT_LOAD r-x
0000f6582e54-0000f6582e5c r-x 8 /lib/arm-linux-gnueabihf/libz.so.1 .fini PT_LOAD r-x
0000f6582e5c-0000f6586eac r-- 16464 /lib/arm-linux-gnueabihf/libz.so.1 .rodata PT_LOAD r-x
0000f6586eac-0000f6586eb4 r-- 8 /lib/arm-linux-gnueabihf/libz.so.1 .ARM.exidx Unknown: 7000000100000000
r--
0000f6586eb4-0000f6586eb8 r-- 4 /lib/arm-linux-gnueabihf/libz.so.1 .eh_frame Unknown: 7000000100000000
r--
0000f658fe54-0000f658fe58 rw- 4 /lib/arm-linux-gnueabihf/libz.so.1 .init_array PT_GNU_RELRO r--
0000f658fe58-0000f658fe5c rw- 4 /lib/arm-linux-gnueabihf/libz.so.1 .fini_array PT_GNU_RELRO r--
0000f658fe5c-0000f658fe60 rw- 4 /lib/arm-linux-gnueabihf/libz.so.1 .jcr PT_GNU_RELRO r--
0000f658fe60-0000f658ff00 rw- 160 /lib/arm-linux-gnueabihf/libz.so.1 .data.rel.ro PT_GNU_RELRO r--
0000f658ff00-0000f6590000 rw- 256 /lib/arm-linux-gnueabihf/libz.so.1 .dynamic PT_DYNAMIC rw-
0000f6590000-0000f6590078 rw- 120 /lib/arm-linux-gnueabihf/libz.so.1 .got PT_DYNAMIC rw-
0000f6590078-0000f65900b8 rw- 64 /lib/arm-linux-gnueabihf/libz.so.1 .data PT_LOAD rw-
0000f65900b8-0000f65900bc rw- 4 /lib/arm-linux-gnueabihf/libz.so.1 .bss PT_LOAD rw-
-- Total: 145 sections
>
All of the wsh commands and API are similarly supported under ARM.
Gdb, strace or ltrace will not work within the qemu usermode emulator since ptrace() is not supported. To the contrary, wsh doesn't use ptrace() and is fully supported.