[PATCH 2/3 elf] Add MicroBlaze support to elf.h

[PATCH 2/3 elf] Add MicroBlaze support to elf.h

[David Holsgrove]

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Add MicroBlaze relocations to elf/elf.h

2012-11-29  David Holsgrove  <david.holsgrove@xilinx.com>

        * elf/elf.h: Add support for MicroBlaze arch

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From 02a0759b648b6aed4538cd0cde88babf5468585a Mon Sep 17 00:00:00 2001
From: David Holsgrove <david.holsgrove@petalogix.com>
Date: Wed, 4 Jan 2012 13:56:48 +1000
Subject: [PATCH] Adding MicroBlaze support to elf/elf.h

Signed-off-by: David Holsgrove <david.holsgrove@petalogix.com>
---
 elf/elf.h |   33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/elf/elf.h b/elf/elf.h
index b07e6ad..6a4a4cc 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -259,6 +259,8 @@ typedef struct
    chances of collision with official or non-GNU unofficial values.  */
 
 #define EM_ALPHA	0x9026
+#define EM_NEW_MICROBLAZE   0xbd /* Xilinx MicroBlaze */
+#define EM_MICROBLAZE 0xbaab
 
 /* Legal values for e_version (version).  */
 
@@ -2847,6 +2849,37 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_M32R_GOTOFF_LO	64	/* Low 16 bit offset to GOT */
 #define R_M32R_NUM		256	/* Keep this the last entry. */
 
+/* microblaze relocations */
+#define R_MICROBLAZE_NONE	0
+#define R_MICROBLAZE_32		1
+#define R_MICROBLAZE_32_PCREL	2
+#define R_MICROBLAZE_64_PCREL	3
+#define R_MICROBLAZE_32_PCREL_LO	4
+#define R_MICROBLAZE_64		5
+#define R_MICROBLAZE_32_LO	6
+#define R_MICROBLAZE_SRO32	7
+#define R_MICROBLAZE_SRW32	8
+#define R_MICROBLAZE_64_NONE	9
+#define R_MICROBLAZE_32_SYM_OP_SYM	10
+#define R_MICROBLAZE_GNU_VTINHERIT	11
+#define R_MICROBLAZE_GNU_VTENTRY	12
+#define R_MICROBLAZE_GOTPC_64	13
+#define R_MICROBLAZE_GOT_64	14
+#define R_MICROBLAZE_PLT_64	15
+#define R_MICROBLAZE_REL	16
+#define R_MICROBLAZE_JUMP_SLOT	17
+#define R_MICROBLAZE_GLOB_DAT	18
+#define R_MICROBLAZE_GOTOFF_64	19
+#define R_MICROBLAZE_GOTOFF_32	20
+#define R_MICROBLAZE_COPY	21
+#define R_MICROBLAZE_TLS	22
+#define R_MICROBLAZE_TLSGD	23
+#define R_MICROBLAZE_TLSLD	24
+#define R_MICROBLAZE_TLSDTPMOD32	25
+#define R_MICROBLAZE_TLSDTPREL32	26
+#define R_MICROBLAZE_TLSDTPREL64	27
+#define R_MICROBLAZE_TLSGOTTPREL32	28
+#define R_MICROBLAZE_TLSTPREL32		29
 
 /* TILEPro relocations.  */
 #define R_TILEPRO_NONE		0	/* No reloc */
-- 
1.7.9.5

[PATCH] Adding MicroBlaze support to elf/elf.h

[David Holsgrove]

From: David Holsgrove <david.holsgrove@petalogix.com>

Signed-off-by: David Holsgrove <david.holsgrove@petalogix.com>
---
 elf/elf.h |   33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/elf/elf.h b/elf/elf.h
index b07e6ad..6a4a4cc 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -259,6 +259,8 @@ typedef struct
    chances of collision with official or non-GNU unofficial values.  */
 
 #define EM_ALPHA	0x9026
+#define EM_NEW_MICROBLAZE   0xbd /* Xilinx MicroBlaze */
+#define EM_MICROBLAZE 0xbaab
 
 /* Legal values for e_version (version).  */
 
@@ -2847,6 +2849,37 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_M32R_GOTOFF_LO	64	/* Low 16 bit offset to GOT */
 #define R_M32R_NUM		256	/* Keep this the last entry. */
 
+/* microblaze relocations */
+#define R_MICROBLAZE_NONE	0
+#define R_MICROBLAZE_32		1
+#define R_MICROBLAZE_32_PCREL	2
+#define R_MICROBLAZE_64_PCREL	3
+#define R_MICROBLAZE_32_PCREL_LO	4
+#define R_MICROBLAZE_64		5
+#define R_MICROBLAZE_32_LO	6
+#define R_MICROBLAZE_SRO32	7
+#define R_MICROBLAZE_SRW32	8
+#define R_MICROBLAZE_64_NONE	9
+#define R_MICROBLAZE_32_SYM_OP_SYM	10
+#define R_MICROBLAZE_GNU_VTINHERIT	11
+#define R_MICROBLAZE_GNU_VTENTRY	12
+#define R_MICROBLAZE_GOTPC_64	13
+#define R_MICROBLAZE_GOT_64	14
+#define R_MICROBLAZE_PLT_64	15
+#define R_MICROBLAZE_REL	16
+#define R_MICROBLAZE_JUMP_SLOT	17
+#define R_MICROBLAZE_GLOB_DAT	18
+#define R_MICROBLAZE_GOTOFF_64	19
+#define R_MICROBLAZE_GOTOFF_32	20
+#define R_MICROBLAZE_COPY	21
+#define R_MICROBLAZE_TLS	22
+#define R_MICROBLAZE_TLSGD	23
+#define R_MICROBLAZE_TLSLD	24
+#define R_MICROBLAZE_TLSDTPMOD32	25
+#define R_MICROBLAZE_TLSDTPREL32	26
+#define R_MICROBLAZE_TLSDTPREL64	27
+#define R_MICROBLAZE_TLSGOTTPREL32	28
+#define R_MICROBLAZE_TLSTPREL32		29
 
 /* TILEPro relocations.  */
 #define R_TILEPRO_NONE		0	/* No reloc */
-- 
1.7.9.5

Re: [PATCH 2/3 elf] Add MicroBlaze support to elf.h

[Andreas Jaeger]

On 11/29/2012 06:28 AM, David Holsgrove wrote:
> d MicroBlaze relocations to elf/elf.h
>
> 2012-11-29  David Holsgrove<david.holsgrove@xilinx.com>
>
>          * elf/elf.h: Add support for MicroBlaze arch
>
>
> 0002-Adding-MicroBlaze-support-to-elf-elf.h.patch
>

David, thanks for your patch. Could you please review the Contribution 
checklist at http://sourceware.org/glibc/wiki/Contribution%20checklist?

Your patch misses a valid ChangeLog entry and that's needed for such 
changes.

>  From 02a0759b648b6aed4538cd0cde88babf5468585a Mon Sep 17 00:00:00 2001
> From: David Holsgrove<david.holsgrove@petalogix.com>
> Date: Wed, 4 Jan 2012 13:56:48 +1000
> Subject: [PATCH] Adding MicroBlaze support to elf/elf.h
>
> Signed-off-by: David Holsgrove<david.holsgrove@petalogix.com>
> ---
>   elf/elf.h |   33 +++++++++++++++++++++++++++++++++
>   1 file changed, 33 insertions(+)
>
> diff --git a/elf/elf.h b/elf/elf.h
> index b07e6ad..6a4a4cc 100644
> --- a/elf/elf.h
> +++ b/elf/elf.h
> @@ -259,6 +259,8 @@ typedef struct
>      chances of collision with official or non-GNU unofficial values.  */
>
>   #define EM_ALPHA	0x9026
> +#define EM_NEW_MICROBLAZE   0xbd /* Xilinx MicroBlaze */
> +#define EM_MICROBLAZE 0xbaab

Are any of these official values? The comment above asks for hig numbers 
and 0xbd is not height.

>
>   /* Legal values for e_version (version).  */
>
> @@ -2847,6 +2849,37 @@ typedef Elf32_Addr Elf32_Conflict;
>   #define R_M32R_GOTOFF_LO	64	/* Low 16 bit offset to GOT */
>   #define R_M32R_NUM		256	/* Keep this the last entry. */
>
> +/* microblaze relocations */
> +#define R_MICROBLAZE_NONE	0

I suggest to be consistent with the writing of the name - so is it 
microblaze or MicroBlaze?

> +#define R_MICROBLAZE_32		1
> +#define R_MICROBLAZE_32_PCREL	2
> +#define R_MICROBLAZE_64_PCREL	3
> +#define R_MICROBLAZE_32_PCREL_LO	4
> +#define R_MICROBLAZE_64		5
> +#define R_MICROBLAZE_32_LO	6
> +#define R_MICROBLAZE_SRO32	7
> +#define R_MICROBLAZE_SRW32	8
 > [...]

Please add comments for all of them,

Thanks,
Andreas
-- 
  Andreas Jaeger aj@{suse.com,opensuse.org} Twitter/Identica: jaegerandi
   SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
    GF: Jeff Hawn,Jennifer Guild,Felix Imendörffer,HRB16746 (AG Nürnberg)
     GPG fingerprint = 93A3 365E CE47 B889 DF7F  FED1 389A 563C C272 A126

Re: [PATCH 2/3 elf] Add MicroBlaze support to elf.h

[Mike Frysinger]

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On Thursday 29 November 2012 02:16:22 Andreas Jaeger wrote:
> On 11/29/2012 06:28 AM, David Holsgrove wrote:
> > +#define EM_NEW_MICROBLAZE   0xbd /* Xilinx MicroBlaze */
> > +#define EM_MICROBLAZE 0xbaab
> 
> Are any of these official values? The comment above asks for hig numbers
> and 0xbd is not height.

the first one is, but should be renamed.  from binutils:
#define EM_MICROBLAZE   189 /* Xilinx MicroBlaze 32-bit RISC soft processor core */
-mike

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RE: [PATCH 2/3 elf] Add MicroBlaze support to elf.h

[David Holsgrove]

Hi Andreas,

> -----Original Message-----
> From: Andreas Jaeger [mailto:aj@suse.com]
> Sent: Thursday, 29 November 2012 5:16 pm
> To: David Holsgrove
> Cc: libc-alpha@sourceware.org; libc-ports@sourceware.org; John Williams; Edgar
> E. Iglesias; Vinod Kathail; Tom Shui; Vidhumouli Hunsigida; Nagaraju Mekala
> Subject: Re: [PATCH 2/3 elf] Add MicroBlaze support to elf.h
> 
> On 11/29/2012 06:28 AM, David Holsgrove wrote:
> > d MicroBlaze relocations to elf/elf.h
> >
> > 2012-11-29  David Holsgrove<david.holsgrove@xilinx.com>
> >
> >          * elf/elf.h: Add support for MicroBlaze arch
> >
> >
> > 0002-Adding-MicroBlaze-support-to-elf-elf.h.patch
> >
> 
> David, thanks for your patch. Could you please review the Contribution
> checklist at http://sourceware.org/glibc/wiki/Contribution%20checklist?
> 
> Your patch misses a valid ChangeLog entry and that's needed for such
> changes.

Thanks, will update in next version.

> 
> >  From 02a0759b648b6aed4538cd0cde88babf5468585a Mon Sep 17 00:00:00 2001
> > From: David Holsgrove<david.holsgrove@petalogix.com>
> > Date: Wed, 4 Jan 2012 13:56:48 +1000
> > Subject: [PATCH] Adding MicroBlaze support to elf/elf.h
> >
> > Signed-off-by: David Holsgrove<david.holsgrove@petalogix.com>
> > ---
> >   elf/elf.h |   33 +++++++++++++++++++++++++++++++++
> >   1 file changed, 33 insertions(+)
> >
> > diff --git a/elf/elf.h b/elf/elf.h
> > index b07e6ad..6a4a4cc 100644
> > --- a/elf/elf.h
> > +++ b/elf/elf.h
> > @@ -259,6 +259,8 @@ typedef struct
> >      chances of collision with official or non-GNU unofficial values.  */
> >
> >   #define EM_ALPHA	0x9026
> > +#define EM_NEW_MICROBLAZE   0xbd /* Xilinx MicroBlaze */
> > +#define EM_MICROBLAZE 0xbaab
> 
> Are any of these official values? The comment above asks for hig numbers
> and 0xbd is not height.
> 

Yes they are, but could be renamed to better match upstream binutils. I'll revise
in this patch for elf.h and also my patch to libc-ports thanks.

> >
> >   /* Legal values for e_version (version).  */
> >
> > @@ -2847,6 +2849,37 @@ typedef Elf32_Addr Elf32_Conflict;
> >   #define R_M32R_GOTOFF_LO	64	/* Low 16 bit offset to GOT */
> >   #define R_M32R_NUM		256	/* Keep this the last entry. */
> >
> > +/* microblaze relocations */
> > +#define R_MICROBLAZE_NONE	0
> 
> I suggest to be consistent with the writing of the name - so is it
> microblaze or MicroBlaze?

MicroBlaze :-) Comment updated.

> 
> > +#define R_MICROBLAZE_32		1
> > +#define R_MICROBLAZE_32_PCREL	2
> > +#define R_MICROBLAZE_64_PCREL	3
> > +#define R_MICROBLAZE_32_PCREL_LO	4
> > +#define R_MICROBLAZE_64		5
> > +#define R_MICROBLAZE_32_LO	6
> > +#define R_MICROBLAZE_SRO32	7
> > +#define R_MICROBLAZE_SRW32	8
>  > [...]
> 
> Please add comments for all of them,
> 

Thanks for the review, I'll send v2 of my patch shortly.

regards,
David

> Thanks,
> Andreas
> --
>   Andreas Jaeger aj@{suse.com,opensuse.org} Twitter/Identica: jaegerandi
>    SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
>     GF: Jeff Hawn,Jennifer Guild,Felix Imendörffer,HRB16746 (AG Nürnberg)
>      GPG fingerprint = 93A3 365E CE47 B889 DF7F  FED1 389A 563C C272 A126

Re: [PATCH 2/3 elf] Add MicroBlaze support to elf.h

[Andreas Jaeger]

On 11/29/2012 08:58 AM, Mike Frysinger wrote:
> On Thursday 29 November 2012 02:16:22 Andreas Jaeger wrote:
>> On 11/29/2012 06:28 AM, David Holsgrove wrote:
>>> +#define EM_NEW_MICROBLAZE   0xbd /* Xilinx MicroBlaze */
>>> +#define EM_MICROBLAZE 0xbaab
>>
>> Are any of these official values? The comment above asks for hig numbers
>> and 0xbd is not height.
>
> the first one is, but should be renamed.  from binutils:
> #define EM_MICROBLAZE   189 /* Xilinx MicroBlaze 32-bit RISC soft processor core */

In that case, it should be sorted at the proper place - directly after 
EM_TILEPRO.

David, we've just frozen glibc for development, these kind of patches 
are too late for glibc 2.17. Please update them and they will get 
properly reviewed and added once 2.17 is released.

Btw. do you have copyright announcement with the FSF?
Andreas
-- 
  Andreas Jaeger aj@{suse.com,opensuse.org} Twitter/Identica: jaegerandi
   SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
    GF: Jeff Hawn,Jennifer Guild,Felix Imendörffer,HRB16746 (AG Nürnberg)
     GPG fingerprint = 93A3 365E CE47 B889 DF7F  FED1 389A 563C C272 A126

RE: [PATCH 2/3 elf] Add MicroBlaze support to elf.h

[David Holsgrove]

Hi Andreas,

> -----Original Message-----
> From: Andreas Jaeger [mailto:aj@suse.com]
> Sent: Thursday, 29 November 2012 6:05 pm
> To: Mike Frysinger
> Cc: libc-alpha@sourceware.org; David Holsgrove; libc-ports@sourceware.org;
> John Williams; Edgar E. Iglesias; Vinod Kathail; Tom Shui; Vidhumouli Hunsigida;
> Nagaraju Mekala
> Subject: Re: [PATCH 2/3 elf] Add MicroBlaze support to elf.h
> 
> On 11/29/2012 08:58 AM, Mike Frysinger wrote:
> > On Thursday 29 November 2012 02:16:22 Andreas Jaeger wrote:
> >> On 11/29/2012 06:28 AM, David Holsgrove wrote:
> >>> +#define EM_NEW_MICROBLAZE   0xbd /* Xilinx MicroBlaze */
> >>> +#define EM_MICROBLAZE 0xbaab
> >>
> >> Are any of these official values? The comment above asks for hig numbers
> >> and 0xbd is not height.
> >
> > the first one is, but should be renamed.  from binutils:
> > #define EM_MICROBLAZE   189 /* Xilinx MicroBlaze 32-bit RISC soft processor
> core */
> 
> In that case, it should be sorted at the proper place - directly after
> EM_TILEPRO.
> 
> David, we've just frozen glibc for development, these kind of patches
> are too late for glibc 2.17. Please update them and they will get
> properly reviewed and added once 2.17 is released.
> 

Thanks for the heads up, does this apply to commits self-contained to libc-ports
also? (can't hurt to ask :-) )

> Btw. do you have copyright announcement with the FSF?

Yes, Xilinx has copyright assignments with FSF, completed in January 2010.

David

> Andreas
> --
>   Andreas Jaeger aj@{suse.com,opensuse.org} Twitter/Identica: jaegerandi
>    SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
>     GF: Jeff Hawn,Jennifer Guild,Felix Imendörffer,HRB16746 (AG Nürnberg)
>      GPG fingerprint = 93A3 365E CE47 B889 DF7F  FED1 389A 563C C272 A126

Re: [PATCH 2/3 elf] Add MicroBlaze support to elf.h

[Joseph S. Myers]

On Thu, 29 Nov 2012, Andreas Jaeger wrote:

> David, we've just frozen glibc for development, these kind of patches are too
> late for glibc 2.17. Please update them and they will get properly reviewed
> and added once 2.17 is released.

There's no risk of such patches requiring any updates to existing 
architectures, or breaking them, or requiring any updates to message 
translations, so I see no reason for them to be affected by the freeze.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 2/3 elf] Add MicroBlaze support to elf.h

[Carlos O'Donell]

On Thu, Nov 29, 2012 at 11:05 AM, Joseph S. Myers
<joseph@codesourcery.com> wrote:
> On Thu, 29 Nov 2012, Andreas Jaeger wrote:
>
>> David, we've just frozen glibc for development, these kind of patches are too
>> late for glibc 2.17. Please update them and they will get properly reviewed
>> and added once 2.17 is released.
>
> There's no risk of such patches requiring any updates to existing
> architectures, or breaking them, or requiring any updates to message
> translations, so I see no reason for them to be affected by the freeze.

This is the second time we've had this kind of discussion.

However, you did not reply to my comments last time[1].

I will say them again for the record.

There are both direct and indirect benefits here.

The direct benefit is that it's one less patch I have to
review going onto trunk.

The indirect benefit is that we get the community into the
habit and discipline of setting aside trivial changes to
focus on stabilizing trunk.

Does that make sense?

I don't mind if this patch gets checked into trunk, but
please work with David to ensure that it goes in without
error.

Cheers,
Carlos.

[1] http://sourceware.org/ml/libc-alpha/2012-06/msg00267.html

Re: [PATCH 2/3 elf] Add MicroBlaze support to elf.h

[Joseph S. Myers]

On Thu, 29 Nov 2012, Carlos O'Donell wrote:

> The indirect benefit is that we get the community into the
> habit and discipline of setting aside trivial changes to
> focus on stabilizing trunk.

The freeze is meant to be our servant, not our master.  A freeze causes 
harm by preventing useful improvements getting in, being used as a basis 
for other improvements and becoming available to users of releases, and 
should be strictly limited so that it only operates to the extent, and for 
the time, necessary to get out a release maximally useful to a wide range 
of users on a range of architectures.

-- 
Joseph S. Myers
joseph@codesourcery.com