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Re: [Libunwind-devel] [RFC PATCH 0/3] Add support for dwarf compat mode

From: Will Deacon
Subject: Re: [Libunwind-devel] [RFC PATCH 0/3] Add support for dwarf compat mode unwinding
Date: Tue, 21 Jan 2014 11:21:55 +0000
User-agent: Mutt/1.5.21 (2010-09-15)

On Mon, Jan 20, 2014 at 09:21:59PM +0000, Jean Pihet wrote:
> In the case of unwinding the debug info from a binary that has a different
> address size than the current native platform, it is needed to record
> it in the address space struct, in order to correctly parse the debug
> info later. This mode is known as compat mode.

Terminology issues here.... compat mode isn't really that well defined, but
typically involves a different kernel ABI. That doesn't necessarily affect
the address size.

> This is the case when e.g. profiling an ARMv7 binary that runs on an
> ARMv8 (aka AARCH64) platform.

ARMv8 != AArch64


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