linux-kernel - Re: [PATCH 02/13] elf-em.h: add EM

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Date:   Sat, 10 Nov 2018 00:44:22 +0300
From:   "Dmitry V. Levin" <ldv@...linux.org>
To:     Vineet Gupta <vineet.gupta1@...opsys.com>
Cc:     Andy Lutomirski <luto@...nel.org>,
        Elvira Khabirova <lineprinter@...linux.org>,
        linux-snps-arc@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/13] elf-em.h: add EM_ARC

On Fri, Nov 09, 2018 at 04:41:36PM +0000, Vineet Gupta wrote:
> On 11/8/18 7:15 PM, Dmitry V. Levin wrote:
> > The uapi/linux/audit.h header is going to use EM_ARC in order
> > to define AUDIT_ARCH_ARC which is needed to implement
> > syscall_get_arch() which in turn is required to extend
> > the generic ptrace API with PTRACE_GET_SYSCALL_INFO request.
> >
> > The value for EM_ARC has been taken from
> > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.sco.com_developers_gabi_2012-2D12-2D31_ch4.eheader.html&d=DwIBAg&c=DPL6_X_6JkXFx7AXWqB0tg&r=c14YS-cH-kdhTOW89KozFhBtBJgs1zXscZojEZQ0THs&m=UCr-dDO1BWV4K-CXhpcDRnN4Urr4_UgSKBeEaczUAmE&s=XmSWUKeqq324aU46NSTbHc12dH-1vVnA4G3Rm-01WD4&e=
> >
> > Signed-off-by: Dmitry V. Levin <ldv@...linux.org>
> > ---
> >  include/uapi/linux/elf-em.h | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/include/uapi/linux/elf-em.h b/include/uapi/linux/elf-em.h
> > index ba3696e3d694..56ff3f9d9633 100644
> > --- a/include/uapi/linux/elf-em.h
> > +++ b/include/uapi/linux/elf-em.h
> > @@ -26,6 +26,7 @@
> >  #define EM_ARM		40	/* ARM 32 bit */
> >  #define EM_SH		42	/* SuperH */
> >  #define EM_SPARCV9	43	/* SPARC v9 64-bit */
> > +#define EM_ARC		45	/* Argonaut RISC Core */
> 
> Please use EM_ARCOMPACT (for original ARC ISA) and EM_ARCV2 - both defined in
> arch/arc/include/asm/elf.h

OK, but we would have to move both EM_ARCOMPACT and EM_ARCV2
to include/uapi/linux/elf-em.h file first, so they could be used
to define AUDIT_ARCH_* constants in include/uapi/linux/audit.h file.


-- 
ldv

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