[PATCH] rtems-examples: Add CoreMark Benchmark

[Joel Sherrill]

I don't see any RTEMS specific instructions added. Especially
since I think you need them to deal with the submodule.

What happens when you haven't dealt with the submodule? Is the
error reasonable? I would think a directory is missing and the waf
build will die.

I am thrilled to see these added. Any advice for how we can use
these in the project. Compare architectures? RTEMS versions?

--joel

On Sat, Mar 13, 2021 at 1:50 AM Hesham Almatary <
hesham.almatary at cl.cam.ac.uk> wrote:

> CoreMark's primary goals are simplicity and providing a method for
> testing only a processor's core features. It is used primarily here as
> a performance benchmark.
>
> Built and tested for RISC-V rv64imafdc_medany on QEMU and HW
> ---
>  .gitmodules                  |  3 +++
>  benchmarks/coremark/coremark |  1 +
>  benchmarks/coremark/wscript  | 50 ++++++++++++++++++++++++++++++++++++
>  benchmarks/wscript           |  2 +-
>  4 files changed, 55 insertions(+), 1 deletion(-)
>  create mode 160000 benchmarks/coremark/coremark
>  create mode 100644 benchmarks/coremark/wscript
>
> diff --git a/.gitmodules b/.gitmodules
> index ae86e49..d7e52b9 100644
> --- a/.gitmodules
> +++ b/.gitmodules
> @@ -1,3 +1,6 @@
>  [submodule "rtems_waf"]
>         path = rtems_waf
>         url = git://git.rtems.org/rtems_waf.git
> +[submodule "benchmarks/coremark/coremark"]
> +       path = benchmarks/coremark/coremark
> +       url = git at github.com:eembc/coremark.git
> diff --git a/benchmarks/coremark/coremark b/benchmarks/coremark/coremark
> new file mode 160000
> index 0000000..1541482
> --- /dev/null
> +++ b/benchmarks/coremark/coremark
> @@ -0,0 +1 @@
> +Subproject commit 1541482bf3e6ef7f5c69f5be76b14537b60833d0
> diff --git a/benchmarks/coremark/wscript b/benchmarks/coremark/wscript
> new file mode 100644
> index 0000000..2ec5f1e
> --- /dev/null
> +++ b/benchmarks/coremark/wscript
> @@ -0,0 +1,50 @@
> +#-
> +# SPDX-License-Identifier: BSD-2-Clause
> +#
> +# Copyright (c) 2021 Hesham Almatary
> +#
> +# This software was developed by SRI International and the University of
> +# Cambridge Computer Laboratory (Department of Computer Science and
> +# Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of
> the
> +# DARPA SSITH research programme.
> +#
> +# Redistribution and use in source and binary forms, with or without
> +# modification, are permitted provided that the following conditions
> +# are met:
> +# 1. Redistributions of source code must retain the above copyright
> +#    notice, this list of conditions and the following disclaimer.
> +# 2. Redistributions in binary form must reproduce the above copyright
> +#    notice, this list of conditions and the following disclaimer in the
> +#    documentation and/or other materials provided with the distribution.
> +#
> +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
> +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
> PURPOSE
> +# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
> +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
> CONSEQUENTIAL
> +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
> STRICT
> +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
> WAY
> +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> +# SUCH DAMAGE.
> +#
> +
> +import rtems_waf.rtems as rtems
> +
> +def build(bld):
> +    rtems.build(bld)
> +
> +    bld(features = 'c cprogram',
> +        target = 'coremark.bin',
> +        includes = ['coremark/', 'coremark/posix/'],
> +        source = ['coremark/rtems/init.c', 'coremark/posix/core_portme.c',
> +                  'coremark/core_list_join.c', 'coremark/core_main.c',
> +                  'coremark/core_matrix.c', 'coremark/core_state.c',
> +                  'coremark/core_util.c'],
> +
> +        defines = [
> +        # FLAGS_STR is used within CoreMark to print the compiler flags
> used
> +        'FLAGS_STR="'+' '.join([str(flag) for flag in bld.env.CFLAGS])+'"'
> +        ]
> +    )
> diff --git a/benchmarks/wscript b/benchmarks/wscript
> index 12741e7..0947060 100644
> --- a/benchmarks/wscript
> +++ b/benchmarks/wscript
> @@ -7,4 +7,4 @@ import rtems_waf.rtems as rtems
>
>  def build(bld):
>      bld.recurse('nbench')
> -
> +    bld.recurse('coremark')
> --
> 2.25.1
>
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