[Suggestion] about h8/300 architecture in gcc and binutils

Chen Gang gang.chen@asianux.com
Wed Sep 11 01:03:00 GMT 2013

On 09/11/2013 03:55 AM, Michael Schewe wrote:
> Hello Maintainers,
> if you like to drop h8/300 support in linux kernel, thats OK for me.

OK, thanks.

> But i like to see it still supported in gcc & binutils, at least i have
> some projects and know companies using this architecture in embedded
> applications, bare metal without OS. These products have lifetime in
> range of 10...20 years and need toolchain support for software-updates.

OK, thank you for your valuable information.

And it seems the issues of h8/300 for compiling Linux kernel is still
valuable to be focused on, just like Jeff Law said. :-)

> Michael
> Please note for answers: i am only subscribed to binutils mailing list.

Excuse me, my English is not quite well, and also I am a newbie in
binutils and gcc mailing list. I guess your meaning is:

  When send h8/300 related mails, better always include binutils@sourceware.org (although may it is only for gcc issues) ?

Is it correct ? (if it is correct, not need reply)


> Chen Gang schrieb:
>> On 09/10/2013 10:19 AM, Jeff Law wrote:
>>> On 09/09/2013 07:13 PM, Chen Gang wrote:
>>>> Hello Maintainers:
>>>> After google search and check the Linux kernel, H8/300 is dead, and for
>>>> gcc-4.9.0 and binutils-2.23.2 still has h8300, do we still need it for
>>>> another OS ?
>>>> Welcome any suggestions or completions, thanks.
>>>> The related information in linux kernel next tree:
>>>>     commit d02babe847bf96b82b12cc4e4e90028ac3fac73f
>>>>     Author: Guenter Roeck<linux@roeck-us.net>
>>>>     Date:   Fri Aug 30 06:01:49 2013 -0700
>>>>         Drop support for Renesas H8/300 (h8300) architecture
>>>>         H8/300 has been dead for several years, and the kernel for it
>>>>         has not compiled for ages. Drop support for it.
>>>>         Cc: Yoshinori Sato<ysato@users.sourceforge.jp>
>>>>         Acked-by: Greg Kroah-Hartman<gregkh@linuxfoundation.org>
>>>>         Signed-off-by: Guenter Roeck<linux@roeck-us.net>
>>>> The related information in gcc/binutils:
>>>>     We can build h8300 cross-compiler for Linux kernel, successfully,
>>>> but it has many bugs when building Linux kernel with -Os.
>>>>     if we still need h8300 for another OS, is it still valuable to send
>>>> these bugs to Bugzilla (although it is found under Linux)?
>>> It is still useful to send code generation bugs for the H8/300 series to
>>> the GCC folks.
>> OK, thanks, I will wait for 1-2 days which may get another members'
>> opinions for discussing.
>> If no additional opinions, I will report them to Bugzilla, and I should
>> try to continue 'work' with related members (although I am a newbie for
>> compiler and binutils programming).
>>> jeff
>> Thanks.

Chen Gang

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