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Re: [Libunwind-devel] [RFC PATCH 0/3] Add support for dwarf compat mode
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From: |
Will Deacon |
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Subject: |
Re: [Libunwind-devel] [RFC PATCH 0/3] Add support for dwarf compat mode unwinding |
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Date: |
Tue, 21 Jan 2014 11:21:55 +0000 |
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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
Will