From: Fabrice Bellard <fabrice@bellard.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] tcg_target_prologue()
Date: Fri, 11 Apr 2008 11:32:10 +0200 [thread overview]
Message-ID: <47FF301A.4010808@bellard.org> (raw)
In-Reply-To: <20080411005722.GA29173@miranda.arrow>
Stuart Brady wrote:
> Hi,
>
> I recently tried using the C version of the TB call in cpu-exec.c,
> "T0 = gen_func();", with HPPA host support. However, I must then save
> the link register, or else it would be overwritten... but if I use
> tcg_target_prologue(), I find that goto_tb sometimes jumps to the
> prologue, but it sometimes jumps past the prologue, instead!
>
> I've fixed the bug[1] that caused me to investigate this, so for the
> time being, I'll continue calling TBs from inline assembly code, but it
> might be nice to spare others the pain of trying tcg_target_prologue()
> and failing. Any thoughts?
The real fix is in the TCG TODO list (global prologue and epilogue). I
will try to implement it ASAP.
Regards,
Fabrice.
prev parent reply other threads:[~2008-04-11 9:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-11 0:57 [Qemu-devel] tcg_target_prologue() Stuart Brady
2008-04-11 9:32 ` Fabrice Bellard [this message]
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