Implement transmit handler
add malloc-less demangler

Malloc-less implementation of demangler for backtrace on abort, using libstdc++ demangle API.

Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
add demangle on build.mk

Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
Add backtrace on abort()

Print backtrace on abort().
To prevent breaking system before backtrace printouted, these calls are all malloc-less, disabled context-switch by cli().

Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
Print more informations about abort in vm_sigsegv
Add function name on dump_registers()
header fix
fix txq init
Reset/reinit devicef
Invoke debug version of qemu on run.py
drv_shared initialization fix
Bug fix on txq_encap