Build sparc32 openbios

[BALARD Arnaud]

Hi, Openbios !

I try to build a bios sparc32 for qemu.

I use the script "./config/scripts/switch-arch sparc32"

Initializing build tree ok
Creating taget config.mak ok
Creating taget rules.mak ok
Creating config files ok

When I do the "make build-verbose" I get the following error :

"PATH/openbios/arch/sparc32/context.c: In function 'switch_to':
"PATH/openbios/arch/sparc32/context.c:116:5: error: PIC register clobbered by 'l7' in 'asm'
Asm_volatile_("\n\tcall_switch_context"
^~~
Rules.mak:219 « target/arch/sparc32/context.o » failed
Make[1]: *** [target/arch/sparc32/context.o  error 1
Makefile:32 target "subdir-sparc32" failed
Make: *** [subdir-sparc32] error 2

I was try to build ppc and sparc64, that's ok, I can boot on my ppc's bios (not on sparc64, I think I need to do another thing).

Do you know what I'm doing wrong for sparc 32 ?

Thanks,

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Arnaud BALARD
Chargé d'Exploitation et d'Affaires
EDF - DPNT - DAIP - UNITEP
AEI - Groupe SIMU
UFPI Bugey
CD 20 - BP 70130
01155 LAGNIEU

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[Segher Boessenkool]

Hi Arnaud,

On Tue, Feb 26, 2019 at 01:38:49PM +0000, BALARD Arnaud wrote:
> When I do the "make build-verbose" I get the following error :
>
> "PATH/openbios/arch/sparc32/context.c: In function 'switch_to':
> "PATH/openbios/arch/sparc32/context.c:116:5: error: PIC register clobbered by 'l7' in 'asm'
> Asm_volatile_("\n\tcall_switch_context"
> ^~~

Either your GCC is too old, or it is too new, or the openbios code is
wrong and should not list l7 here, or this is compiled with PIC enabled,
while it should not.

Lots of options, sorry :-/  But it's easy to try newer or older GCC
versions, that might help you to build openbios at least.

Good luck,

Segher

[Mark Cave-Ayland]

On 26/02/2019 19:01, Segher Boessenkool wrote:
> Hi Arnaud,
>
> On Tue, Feb 26, 2019 at 01:38:49PM +0000, BALARD Arnaud wrote:
> > When I do the "make build-verbose" I get the following error :
> >
> > "PATH/openbios/arch/sparc32/context.c: In function 'switch_to':
> > "PATH/openbios/arch/sparc32/context.c:116:5: error: PIC register clobbered by 'l7' in 'asm'
> > Asm_volatile_("\n\tcall_switch_context"
> > ^~~
>
> Either your GCC is too old, or it is too new, or the openbios code is
> wrong and should not list l7 here, or this is compiled with PIC enabled,
> while it should not.
>
> Lots of options, sorry :-/  But it's easy to try newer or older GCC
> versions, that might help you to build openbios at least.

If it helps, the self-compiled cross gcc I use for building openbios-sparc32 looks
like this:

$ sparc-elf-gcc -v
Using built-in specs.
COLLECT_GCC=sparc-elf-gcc
COLLECT_LTO_WRAPPER=/home/build/sparc-cross/libexec/gcc/sparc-elf/7.3.0/lto-wrapper
Target: sparc-elf
Configured with: ../gcc-7.3.0/configure --prefix=/home/build/sparc-cross
--target=sparc-elf --disable-libssp --enable-languages=c
Thread model: single
gcc version 7.3.0 (GCC)

ATB,

Mark.

[BALARD Arnaud]

Hi,

Thanks for reply, i think my computer use sparc64 cross-compiler, that's why i get this error.

I don't find any sparc32 cross-compiler for my debian "stretch", do you use debian, Ubuntu or other OS for build sparc's bios ?

Thanks,

-----Message d'origine-----
De : [e-mail] [mailto:[e-mail]] 
Envoyé : mardi 26 février 2019 21:05
À : Segher Boessenkool ; BALARD Arnaud 
Cc : [e-mail]
Objet : Re: [OpenBIOS] Re: Build sparc32 openbios

On 26/02/2019 19:01, Segher Boessenkool wrote:
> Hi Arnaud,
>
> On Tue, Feb 26, 2019 at 01:38:49PM +0000, BALARD Arnaud wrote:
> > When I do the "make build-verbose" I get the following error :
> >
> > "PATH/openbios/arch/sparc32/context.c: In function 'switch_to':
> > "PATH/openbios/arch/sparc32/context.c:116:5: error: PIC register clobbered by 'l7' in 'asm'
> > Asm_volatile_("\n\tcall_switch_context"
> > ^~~
>
> Either your GCC is too old, or it is too new, or the openbios code is 
> wrong and should not list l7 here, or this is compiled with PIC 
> enabled, while it should not.
>
> Lots of options, sorry :-/  But it's easy to try newer or older GCC 
> versions, that might help you to build openbios at least.

If it helps, the self-compiled cross gcc I use for building openbios-sparc32 looks like this:

$ sparc-elf-gcc -v
Using built-in specs.
COLLECT_GCC=sparc-elf-gcc
COLLECT_LTO_WRAPPER=/home/build/sparc-cross/libexec/gcc/sparc-elf/7.3.0/lto-wrapper
Target: sparc-elf
Configured with: ../gcc-7.3.0/configure --prefix=/home/build/sparc-cross --target=sparc-elf --disable-libssp --enable-languages=c Thread model: single gcc version 7.3.0 (GCC)

ATB,

Mark.

Ce message et toutes les pièces jointes (ci-après le 'Message') sont établis à l'intention exclusive des destinataires et les informations qui y figurent sont strictement confidentielles. Toute utilisation de ce Message non conforme à sa destination, toute diffusion ou toute publication totale ou partielle, est interdite sauf autorisation expresse.

Si vous n'êtes pas le destinataire de ce Message, il vous est interdit de le copier, de le faire suivre, de le divulguer ou d'en utiliser tout ou partie. Si vous avez reçu ce Message par erreur, merci de le supprimer de votre système, ainsi que toutes ses copies, et de n'en garder aucune trace sur quelque support que ce soit. Nous vous remercions également d'en avertir immédiatement l'expéditeur par retour du message.

Il est impossible de garantir que les communications par messagerie électronique arrivent en temps utile, sont sécurisées ou dénuées de toute erreur ou virus.
____________________________________________________

This message and any attachments (the 'Message') are intended solely for the addressees. The information contained in this Message is confidential. Any use of information contained in this Message not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval.

If you are not the addressee, you may not copy, forward, disclose or use any part of it. If you have received this message in error, please delete it and all copies from your system and notify the sender immediately by return message.

E-mail communication cannot be guaranteed to be timely secure, error or virus-free.

[Mark Cave-Ayland]

On 01/03/2019 14:23, BALARD Arnaud wrote:
> Hi,
>
> Thanks for reply, i think my computer use sparc64 cross-compiler, that's why i get this error.
>
> I don't find any sparc32 cross-compiler for my debian "stretch", do you use debian, Ubuntu or other OS for build sparc's bios ?

Hi Arnaud,

My base system is Debian Jessie, however I build all my cross-compilers used to
produce OpenBIOS binaries from source myself.

ATB,

Mark.