http://groups.google.com/group/android-ndk/browse_thread/thread/b41d13b517abe69d?hl=en
不知道中間Dave Buther講的這段話
On the emulator I suspect it is being (correctly) treated as an
UNDEFINED instruction (the emulator is running as an ARM926 I
believe), under user-mode on an ARM1176 or an ARMv7-a processor it
will still be treated as an UNDEFINED
while in user mode.
是什麼意思............
ARM9 CPU 有以下幾個 mode
ReplyDeleteUser mode,
System mode,
SVC mode,
Abort mode,
Undefined mode,
IRQ mode,
FIQ mode.
在ARM9 CPU user mode下不能操作一些CPU指令。
另外，在模擬器上，少用的ARM9CPU指令，模擬器有可能偷懶不模擬。如文章猜測是 UNDEFINED instruction。