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Re: [PATCH -tip v5 1/7] x86: instruction decorder API
- From: Masami Hiramatsu <mhiramat at redhat dot com>
- To: Christoph Hellwig <hch at infradead dot org>
- Cc: Ingo Molnar <mingo at elte dot hu>, Steven Rostedt <rostedt at goodmis dot org>, lkml <linux-kernel at vger dot kernel dot org>, systemtap <systemtap at sources dot redhat dot com>, kvm <kvm at vger dot kernel dot org>, Jim Keniston <jkenisto at us dot ibm dot com>, "H. Peter Anvin" <hpa at zytor dot com>, Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, Frederic Weisbecker <fweisbec at gmail dot com>, Andi Kleen <ak at linux dot intel dot com>, Vegard Nossum <vegard dot nossum at gmail dot com>, Avi Kivity <avi at redhat dot com>
- Date: Mon, 11 May 2009 10:36:44 -0400
- Subject: Re: [PATCH -tip v5 1/7] x86: instruction decorder API
- References: <20090509004829.5505.38720.stgit@localhost.localdomain> <20090509004841.5505.48140.stgit@localhost.localdomain> <20090511092731.GA23875@infradead.org>
Christoph Hellwig wrote:
> On Fri, May 08, 2009 at 08:48:42PM -0400, Masami Hiramatsu wrote:
>> Add x86 instruction decoder to arch-specific libraries. This decoder
>> can decode x86 instructions used in kernel into prefix, opcode, modrm,
>> sib, displacement and immediates. This can also show the length of
>> instructions.
>
> Could also be used to implement a simple disasembler for OOPS output ala
> arch/s390/kernel/dis.c?
Yes, but as you may know, it's not so "simple"...especially show it as
"gas-like(a.k.a. at&t)" expression :-)
Thank you,
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com