Hi Chenwj, Thanks for your kindly help. Would you mind give me more help?
Now I have some probem with the exception handle. I found the funciton "do_interrupt" in "target-arm/helper.c" and "gen_exception" in "target-arm/translate.c" seems to handle the exceptions. But I am comfused with those two functions, which function will do the really work about generating an exception. As my understanding, I think “do_interrupt” seems to do some preparations before enter exceptions just like operate some registers and accumulate the exception handler address. And "gen_exception" seems to do the read job to generate a exception. But I'm not sure. Any comments are appreciated. Thanks. BR, Stefan 在 2012年3月29日 上午11:28，陳韋任 <che...@iis.sinica.edu.tw>写道： > > Now I want to moniter memory access on QEMU (guest virtual or guest > > physical). > > I found that QEMU will translate arm instructions into TCG instructions, > > and the TCG instructions will be translated into X86 instructions. > > > > The function "tcg_out_op"(tcg/i386/tcg_target.c) will translate the TCG > > instructions into X86 instructions eventually. > > Does the case statement just like "OP_32_64(ld8u)" and > > "INDEX_op_qemu_ld8u".etc includes all memory access routines on X86 view. > > Is it proper for me to add some codes in TCG -> X86 to moniter the ram > > access on QEMU? > > TGC ops like qemu_ld/qemu_st is for address translations (guest virtual > to > host virtual) in system mode, that's all I can tell. > > Regards, > chenwj > > -- > Wei-Ren Chen (陳韋任) > Computer Systems Lab, Institute of Information Science, > Academia Sinica, Taiwan (R.O.C.) > Tel:886-2-2788-3799 #1667 > Homepage: http://people.cs.nctu.edu.tw/~chenwj >
