From: Tom Rini <trini@konsulko.com>
To: "Pali Rohár" <pali@kernel.org>
Cc: u-boot@lists.denx.de, maemo-leste@lists.dyne.org
Subject: Re: [PATCH] Nokia RX-51: Fix compilation with non-zero CONFIG_SYS_TEXT_BASE
Date: Mon, 10 Oct 2022 09:54:02 -0400 [thread overview]
Message-ID: <20221010135402.GE2020586@bill-the-cat> (raw)
In-Reply-To: <20221009193713.12765-1-pali@kernel.org>
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On Sun, Oct 09, 2022 at 09:37:13PM +0200, Pali Rohár wrote:
> For some unknown reason GNU assembler version 2.31.1 (arm-linux-gnueabi-as
> from Debian Buster) cannot compile following code from located in file
> board/nokia/rx51/lowlevel_init.S:
>
> kernoffs:
> .word KERNEL_OFFSET - (. - CONFIG_SYS_TEXT_BASE)
>
> when CONFIG_SYS_TEXT_BASE is set to 0x80008000. It throws strange compile
> error which is even without line number:
>
> AS board/nokia/rx51/lowlevel_init.o
> {standard input}: Assembler messages:
> {standard input}: Error: attempt to get value of unresolved symbol `L0'
> make[2]: *** [scripts/Makefile.build:293: board/nokia/rx51/lowlevel_init.o] Error 1
>
> I have no idea about this error and my experiments showed that ARM GNU
> assembler is happy with negation of that number. So changing code to:
>
> kernoffs:
> .word . - CONFIG_SYS_TEXT_BASE - KERNEL_OFFSET
>
> and then replacing mathematical addition by substraction of "kernoffs"
> value (so calculation of address does not change) compiles assembler file
> without any error now.
>
> There should be not any functional change.
>
> Signed-off-by: Pali Rohár <pali@kernel.org>
> ---
> Btw, is somebody understanding that compile error message? Is there (or
> was there) some real issue in the code, so assembler refuse to compile
> it? Or have I triggered bug in GNU assembler?
I would suggest filing a bug with upstream GNU assembler and seeing what
they say.
--
Tom
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next prev parent reply other threads:[~2022-10-10 13:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-09 19:37 [PATCH] Nokia RX-51: Fix compilation with non-zero CONFIG_SYS_TEXT_BASE Pali Rohár
2022-10-10 13:54 ` Tom Rini [this message]
2022-10-10 16:18 ` Pali Rohár
2022-10-10 16:21 ` Tom Rini
2022-10-10 17:21 ` Pali Rohár
2022-10-14 16:46 ` Tom Rini
2022-10-18 22:16 ` Tom Rini
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