As part of the kernel build process several intermediate files are created, for several reasons: mainly because our verification toolchain currently requires the kernel as 1 C file, and to support the bitfield generator, which generates the minimal code and proofs for various data structures.

Take a look at CMakeLists.txt [1] to see where these files are generated and for more context.

From: Devel <devel-bounces@sel4.systems> on behalf of Sathya Narayanan N <sathya281@gmail.com>
Sent: Friday, 27 July 2018 5:16 PM
To: Holm, Elinor M
Cc: devel@sel4.systems
Subject: Re: [seL4] Question about wrapper files

Hi Elinor,

>From my understanding of trying SEL4 on FPGA/Qemu. This is a folder that is created once you compile the sel4 project.

Actually speaking, you need not worry about it. All these are generated files during compilation

On Wed, Jul 25, 2018 at 7:48 PM, Holm, Elinor M <Elinor.Holm@gd-ms.com> wrote:

I built sel4test using the init-build.sh command with –DPLATFORM=x86_64 and –DSIMULATION=TRUE and then ran ninja. I’m using QEMU as my emulator.

Within the build directory I created, there’s a kernel directory. In that directory, there are a bunch of C files with names that include “wrapper.” For instance, there’s a file named kernel_all_pp_prune_wrapper_temp.c. I’m having trouble understanding what the wrapper files do. Are there for testing, or something else?

Elinor Holm

Software Engineer

781-410-5221

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regards,
Sathya