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ad3d09b547
The memset implementation carves up the code in different sections, each covered with their own unwind info. In this case, it is done in a way similar to how the compiler might do it, to disambiguate between parts where the return address is in LR and the SP is unmodified, and parts where a stack frame is live, and the unwinder needs to know the size of the stack frame and the location of the return address within it. Only the placement of the unwind directives is slightly odd: the stack pushes are placed in the wrong sections, which may confuse the unwinder when attempting to unwind with PC pointing at the stack push in question. So let's fix this up, by reordering the directives and instructions as appropriate. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Keith Packard <keithpac@amazon.com> Tested-by: Marc Zyngier <maz@kernel.org> Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.