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Re: [Qemu-devel] Translation block identification.


From: Rafael Kioji
Subject: Re: [Qemu-devel] Translation block identification.
Date: Tue, 1 May 2018 18:20:14 +0800
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0

This logging flag prints what I want. But I really wanted is to get this info inside the QEMU source code. Why am I not able to lookup the symbols in the translator.c file the way I showed?

Kind regards,
Rafael

On 5/1/2018 6:04 PM, Alex Bennée wrote:
Rafael Kioji <address@hidden> writes:

Dear all,

During translation how can I identify what is the basic block of the
guest code? I wanted to know whether the block being translated is the
beginning of a function and get its name.

My current approach involves looking up the symbol associated with the
first PC of the translation block. But no symbol is ever found. What I
did was to add the following code in the function "translator_loop" at
"accel/tcg/translator.c":

  printf("sym: %lu %s\n", tb->pc, lookup_symbol(tb->pc));

The function lookup_symbol is defined in the file "./disas.c". I am
compiling my application with symbols (-g). My target arch is ARM.
If you run QEMU with the debug flags you should see name resolution for
each basic block. e.g.

   qemu-arm -d in_asm prog

--
Alex Bennée




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