linux-kernel - Re: [PATCH v2 6/6] selftests: Test the new RISC-V hwprobe interface

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Message-ID: <Y+FwvI+xRg7zMhSx@sirena.org.uk>
Date:   Mon, 6 Feb 2023 21:27:24 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Evan Green <evan@...osinc.com>
Cc:     Palmer Dabbelt <palmer@...osinc.com>,
        Conor Dooley <conor@...nel.org>, vineetg@...osinc.com,
        heiko@...ech.de, slewis@...osinc.com,
        Albert Ou <aou@...s.berkeley.edu>,
        Catalin Marinas <catalin.marinas@....com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v2 6/6] selftests: Test the new RISC-V hwprobe interface

On Mon, Feb 06, 2023 at 12:14:55PM -0800, Evan Green wrote:

> +int main(int argc, char **argv)
> +{

> --- /dev/null
> +++ b/tools/testing/selftests/riscv/libc.S

> +.global _start
> +_start:
> +.option push
> +.option norelax
> +	la gp, __global_pointer$
> +.option pop
> +
> +	la sp, stack
> +
> +	la t0, heap
> +	la t1, brk
> +	REG_S t0, 0(t1)
> +
> +	li a0, 0
> +	li a1, 0
> +
> +	call main

This looks like it's just a standard program entry but I don't speak
RISC-V asm so I might be missing something.  If that's the case might it
make sense to use nolibc here?

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