x86 samples segfault on ARM

[darkf]

Tested on current HEAD (da21bd0).

gdb sessions:

sample_x86:

Starting program: /home/darkf/unicorn/samples/sample_x86 
Cannot parse expression `.L1185 4@r4'.
warning: Probes-based dynamic linker interface failed.
Reverting to original interface.

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
Emulate x86 16-bit code

Program received signal SIGSEGV, Segmentation fault.
0xb6f1b576 in helper_svm_check_intercept_param (env=0x0, type=120, param=0) at /home/darkf/unicorn/qemu/target-i386/svm_helper.c:486
486	    if (likely(!(env->hflags & HF_SVMI_MASK))) {
(gdb) bt
#0  0xb6f1b576 in helper_svm_check_intercept_param (env=0x0, type=120, param=0)
    at /home/darkf/unicorn/qemu/target-i386/svm_helper.c:486
#1  0xb6f1b85a in cpu_svm_check_intercept_param (env=0x0, type=120, param=0) at /home/darkf/unicorn/qemu/target-i386/svm_helper.c:548
#2  0xb6f609aa in helper_hlt (env=0x0, next_eip_addend=1) at /home/darkf/unicorn/qemu/target-i386/misc_helper.c:552
#3  0xb65080f4 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?) 

shellcode (same line as with sample_x86_32_gdt_and_seg_regs):

>>> Start tracing this Linux code

Program received signal SIGSEGV, Segmentation fault.
0xb6fa1b96 in helper_uc_tracecode (size=214408, type=(unknown: 3058728960), handle=0xb6008008, address=8589934594) at ../uc.c:1129
1129	    struct list_item *cur = uc->hook[type].head;
(gdb) bt
#0  0xb6fa1b96 in helper_uc_tracecode (size=214408, type=(unknown: 3058728960), handle=0xb6008008, address=8589934594)
    at ../uc.c:1129
#1  0xb650803c in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) 

[GaoGeolone]

I come across the similar problem,when my ROS node try to link to a libXXX.so

@darkf

Type "apropos word" to search for commands related to "word"... Reading symbols from /home/odroid/mad_crazy/devel/lib/rosopencv/rosopencv...done. Starting program: /home/odroid/mad_crazy/devel/lib/rosopencv/rosopencv Cannot parse expression .L1185 4@r4'.
warning: Probes-based dynamic linker interface failed.
Reverting to original interface.

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
terminate called after throwing an instance of 'std::bad_cast'
what(): std::bad_cast

Program received signal SIGABRT, Aborted.
__libc_do_syscall () at ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:47
47 ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S: No such file or directory.
(gdb) bt
#0 __libc_do_syscall () at ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:47
#1 0xb6a07648 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#2 0xb6a0834a in __GI_abort () at abort.c:89
#3 0xb6d7c400 in __gnu_cxx::__verbose_terminate_handler() () from /lib/libMVSDK.so
#4 0xb6d788fc in __cxxabiv1::__terminate(void ()()) () from /lib/libMVSDK.so
#5 0xb6d78952 in std::terminate() () from /lib/libMVSDK.so
#6 0xb6d77922 in __cxa_throw () from /lib/libMVSDK.so
#7 0xb6d7b0ba in std::__throw_bad_cast() () from /lib/libMVSDK.so
#8 0xb6b7583a in std::__cxx11::collate const& std::use_facet<std::__cxx11::collate >(std::locale const&) ()
from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#9 0xb6613c8a in boost::re_detail::cpp_regex_traits_base::imbue(std::locale const&) ()
from /usr/lib/arm-linux-gnueabihf/libboost_regex.so.1.58.0
#10 0xb661da6e in boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits > >::do_assign(char const, char const*, unsigned int) () from /usr/lib/arm-linux-gnueabihf/libboost_regex.so.1.58.0
#11 0xb69c562e in ros::console::Formatter::init(char const*) () from /opt/ros/lunar/lib/librosconsole.so
#12 0xb69c5c68 in ros::console::initialize() () from /opt/ros/lunar/lib/librosconsole.so
#13 0xb6fe293c in call_init (l=, argc=argc@entry=1, argv=argv@entry=0xbefff304, env=env@entry=0xbefff30c) at dl-init.c:72
#14 0xb6fe2a16 in call_init (env=, argv=, argc=, l=) at dl-init.c:30
#15 _dl_init (main_map=0xb6fff958, argc=1, argv=0xbefff304, env=0xbefff30c) at dl-init.c:120
#16 0xb6fd7a04 in _dl_start_user () from /lib/ld-linux-armhf.so.3
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
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