support some more command requested from or32-linux-gdb
suppress compiler warnings
read mem by 1Byte to support longer memory read request
fixed bug of breakpoint handling
use EXC_IRQ instead of 0x800
step exec works on interrupt handler
Fixed violation of assertions in LLVM
a)Removed the label from void func
b)Cast the address and value for mem_read(), mem_write()
Fixed assertion vilation (Bit width missmatch H)
fixed assertion violation(no label for gen_set_reg())
fixed CXXFLAGS
fixed compile error when optimized
update PC at the necessary point
tuncate the bit width to 16bit for the 1st parameter of set_reg_func
compilable on C++03 compiler
add -MD for CXXFLAGS
support Overflow, Carry for l.add
add Select, UDiv, SDiv
add unimplemented arith insn
implement bit extension insn