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Date: Tue, 3 Apr 2007 00:17:58 +0100
Subject: Re: [Qemu-devel] Re: PC traces from QEMU
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From: Thiemo Seufer <ths@networkno.de>
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To: Shashidhar Mysore <shashimc@gmail.com>
Cc: qemu-devel@nongnu.org

Shashidhar Mysore wrote:
> Hi Stuart,
> 
> Thanks for the patch. It works well for me, except that the log file grows
> so huge and qemu slows down quite a lot. Did you have problems with this? I
> was wondering if there was a way to actually begin the PC trace collection
> after completely booting QEMU and also restrict it to a particular process
> ID?

FWIW, I would appreciate a patch which makes this a command line /
monitor log option called "pc". :-)

[snip]
> >--- target-i386/helper.c        1 Feb 2007 22:12:19 -0000       1.74
> >+++ target-i386/helper.c        30 Mar 2007 11:02:09 -0000
> >@@ -30,6 +30,16 @@
> >} while (0)
> >#endif
> >
> >+void helper_dump_pc(target_ulong pc)
> >+{
> >+    if (logfile)
> >+#ifdef TARGET_X86_64
> >+        fprintf(logfile, "PC = %016" PRIx64 "\n", pc);
> >+#else
> >+        fprintf(logfile, "PC = %08x\n", pc);
> >+#endif

We have TARGET_FMT_lx for that.


Thiemo