[PATCH][RFC][WIP 0/6] thumb tune feature improvements

[PATCH][RFC][WIP 0/6] thumb tune feature improvements

[Martin Jansa]

Only first patch was properly tested, the rest is just something I've
noticed when looking at feature-arm-thumb.inc and there was similar
request from Andrei last week

http://lists.openembedded.org/pipermail/openembedded-core/2014-January/088207.html

The following changes since commit 4659d29b1040349116549644e45035a5b37d9311:

  sstate.bbclass: remove previous version's stamp (2014-01-21 10:36:23 +0000)

are available in the git repository at:

  git://git.openembedded.org/openembedded-core-contrib jansa/tune
  http://cgit.openembedded.org/cgit.cgi/openembedded-core-contrib/log/?h=jansa/tune

Andrei Gherzan (1):
  tune-cortexm3.inc: Cortex-M3 doesn't support ARM instructions

Martin Jansa (5):
  feature-arm-thumb.inc: Fix missing t2 suffix for armv7a MACHINEs
  feature-arm-thumb.inc: Replace inner quotes with apostrophes
  feature-arm-thumb.inc: respect ARM_INSTRUCTION_SET when adding thumb
    suffix
  feature-arm-thumb.inc, arch-armv4.inc: Add "arm" to TUNE_FEATURES
  tune-cortexr4.inc: Add thumb and arm to TUNE_FEATURES

 meta/conf/machine/include/arm/arch-armv4.inc       |  2 +-
 .../conf/machine/include/arm/feature-arm-thumb.inc | 30 ++++++++++++++--------
 meta/conf/machine/include/tune-cortexm3.inc        |  2 +-
 meta/conf/machine/include/tune-cortexr4.inc        |  2 +-
 4 files changed, 23 insertions(+), 13 deletions(-)

-- 
1.8.5.3

[PATCH][RFC][WIP 1/6] feature-arm-thumb.inc: Fix missing t2 suffix for armv7a MACHINEs

[Martin Jansa]

* unfortunatelly that note about armv7 matching also armv7a is no
  longer valid since armv7 include in armv7a was replaced with
  armv6+neon in this commit:

  commit 75b8adbc042e0f65fb1286bc550d02becd3b6aea
  Author: Khem Raj <raj.khem@gmail.com>
  Date:   Tue Mar 27 18:37:45 2012 -0700

    tune/armv7: Delete

  since then thumb and arm feeds had the same architecture
* be aware that this will rename lots of feeds

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/conf/machine/include/arm/feature-arm-thumb.inc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc
index bd754be..fa3a4e5 100644
--- a/meta/conf/machine/include/arm/feature-arm-thumb.inc
+++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc
@@ -9,11 +9,10 @@ ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True)
 TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "thumb", " ${ARM_THUMB_M_OPT}", "", d)}"
 OVERRIDES .= "${@bb.utils.contains("TUNE_FEATURES", "thumb", ":thumb", "", d)}"
 
-# Note armv7 will hit on armv7a as well
 ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv4", "thumb" ], "t", "", d)}"
 ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv5", "thumb" ], "t", "", d)}"
 ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv6", "thumb" ], "t", "", d)}"
-ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv7", "thumb" ], "t2", "", d)}"
+ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv7a", "thumb" ], "t2", "", d)}"
 
 # Whether to compile with code to allow interworking between the two
 # instruction sets. This allows thumb code to be executed on a primarily
-- 
1.8.5.3

[PATCH][RFC][WIP 2/6] feature-arm-thumb.inc: Replace inner quotes with apostrophes

[Martin Jansa]

* so that it's highlighted correctly
---
 meta/conf/machine/include/arm/feature-arm-thumb.inc | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc
index fa3a4e5..d58c4b4 100644
--- a/meta/conf/machine/include/arm/feature-arm-thumb.inc
+++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc
@@ -6,20 +6,20 @@
 # slower.
 TUNEVALID[thumb] = "Use thumb instructions instead of ARM"
 ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
-TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "thumb", " ${ARM_THUMB_M_OPT}", "", d)}"
-OVERRIDES .= "${@bb.utils.contains("TUNE_FEATURES", "thumb", ":thumb", "", d)}"
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' ${ARM_THUMB_M_OPT}', '', d)}"
+OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ':thumb', '', d)}"
 
-ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv4", "thumb" ], "t", "", d)}"
-ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv5", "thumb" ], "t", "", d)}"
-ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv6", "thumb" ], "t", "", d)}"
-ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv7a", "thumb" ], "t2", "", d)}"
+ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv4', 'thumb' ], 't', '', d)}"
+ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv5', 'thumb' ], 't', '', d)}"
+ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv6', 'thumb' ], 't', '', d)}"
+ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv7a', 'thumb' ], 't2', '', d)}"
 
 # Whether to compile with code to allow interworking between the two
 # instruction sets. This allows thumb code to be executed on a primarily
 # arm system and vice versa. It is strongly recommended that DISTROs not
 # turn this off - the actual cost is very small.
 TUNEVALID[no-thumb-interwork] = "Disable mixing of thumb and ARM functions"
-TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "no-thumb-interwork", " -mno-thumb-interwork", " -mthumb-interwork", d)}"
-OVERRIDES .= "${@bb.utils.contains("TUNE_FEATURES", "no-thumb-interwork", ":thumb-interwork", "", d)}"
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'no-thumb-interwork', ' -mno-thumb-interwork', ' -mthumb-interwork', d)}"
+OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'no-thumb-interwork', ':thumb-interwork', '', d)}"
 
 TARGET_CC_KERNEL_ARCH += "-mno-thumb-interwork -marm"
-- 
1.8.5.3

[PATCH][RFC][WIP 3/6] feature-arm-thumb.inc: respect ARM_INSTRUCTION_SET when adding thumb suffix

[Martin Jansa]

* this means that recipes with ARM_INSTRUCTION_SET explicitly changed
  to arm will be built in feed without thumb suffix
* I'm not sure if the rest of system correctly supports different
  TUNE_PKGARCHs for different recipes, this is one of the reasons why
  this is WIP/RFC

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/conf/machine/include/arm/feature-arm-thumb.inc | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc
index d58c4b4..09a127a 100644
--- a/meta/conf/machine/include/arm/feature-arm-thumb.inc
+++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc
@@ -5,14 +5,19 @@
 # but requires more instructions (140% for 70% smaller code) so may be
 # slower.
 TUNEVALID[thumb] = "Use thumb instructions instead of ARM"
-ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
-TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' ${ARM_THUMB_M_OPT}', '', d)}"
+ARM_THUMB_OPT = "${@['arm', 'thumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
+ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv4',  't',  '', d)}"
+ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv5',  't',  '', d)}"
+ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6',  't',  '', d)}"
+ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', 't2', '', d)}"
+ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7r', 't2', '', d)}"
+ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', 't2', '', d)}"
+
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_THUMB_OPT}', '', d)}"
 OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ':thumb', '', d)}"
 
-ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv4', 'thumb' ], 't', '', d)}"
-ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv5', 'thumb' ], 't', '', d)}"
-ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv6', 'thumb' ], 't', '', d)}"
-ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv7a', 'thumb' ], 't2', '', d)}"
+# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_THUMB_OPT to thumb
+ARMPKGSFX_THUMB .= "${@ d.getVar('ARM_THUMB_SUFFIX', True) if d.getVar('ARM_THUMB_OPT', True) == 'thumb'] else ''}"
 
 # Whether to compile with code to allow interworking between the two
 # instruction sets. This allows thumb code to be executed on a primarily
-- 
1.8.5.3

Re: [PATCH][RFC][WIP 3/6] feature-arm-thumb.inc: respect ARM_INSTRUCTION_SET when adding thumb suffix

[Martin Jansa]

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On Wed, Jan 22, 2014 at 01:36:08AM +0100, Martin Jansa wrote:
> * this means that recipes with ARM_INSTRUCTION_SET explicitly changed
>   to arm will be built in feed without thumb suffix
> * I'm not sure if the rest of system correctly supports different
>   TUNE_PKGARCHs for different recipes, this is one of the reasons why
>   this is WIP/RFC
> 
> Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
> ---
>  meta/conf/machine/include/arm/feature-arm-thumb.inc | 17 +++++++++++------
>  1 file changed, 11 insertions(+), 6 deletions(-)
> 
> diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc
> index d58c4b4..09a127a 100644
> --- a/meta/conf/machine/include/arm/feature-arm-thumb.inc
> +++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc
> @@ -5,14 +5,19 @@
>  # but requires more instructions (140% for 70% smaller code) so may be
>  # slower.
>  TUNEVALID[thumb] = "Use thumb instructions instead of ARM"
> -ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
> -TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' ${ARM_THUMB_M_OPT}', '', d)}"
> +ARM_THUMB_OPT = "${@['arm', 'thumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
> +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv4',  't',  '', d)}"
> +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv5',  't',  '', d)}"
> +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6',  't',  '', d)}"
> +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', 't2', '', d)}"
> +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7r', 't2', '', d)}"
> +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', 't2', '', d)}"
> +
> +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_THUMB_OPT}', '', d)}"
>  OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ':thumb', '', d)}"
>  
> -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv4', 'thumb' ], 't', '', d)}"
> -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv5', 'thumb' ], 't', '', d)}"
> -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv6', 'thumb' ], 't', '', d)}"
> -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv7a', 'thumb' ], 't2', '', d)}"
> +# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_THUMB_OPT to thumb
> +ARMPKGSFX_THUMB .= "${@ d.getVar('ARM_THUMB_SUFFIX', True) if d.getVar('ARM_THUMB_OPT', True) == 'thumb'] else ''}"

In branch I've removed extra ']' in this line and moved this patch as
last in series, because it's really not ready for merge (eglibc-initial
fails).

Any other comments before I send v2?

>  # Whether to compile with code to allow interworking between the two
>  # instruction sets. This allows thumb code to be executed on a primarily
> -- 
> 1.8.5.3
> 

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa@gmail.com

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Re: [PATCH][RFC][WIP 3/6] feature-arm-thumb.inc: respect ARM_INSTRUCTION_SET when adding thumb suffix

[Martin Jansa]

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On Fri, Jan 31, 2014 at 06:38:00PM +0100, Martin Jansa wrote:
> On Wed, Jan 22, 2014 at 01:36:08AM +0100, Martin Jansa wrote:
> > * this means that recipes with ARM_INSTRUCTION_SET explicitly changed
> >   to arm will be built in feed without thumb suffix
> > * I'm not sure if the rest of system correctly supports different
> >   TUNE_PKGARCHs for different recipes, this is one of the reasons why
> >   this is WIP/RFC
> > 
> > Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
> > ---
> >  meta/conf/machine/include/arm/feature-arm-thumb.inc | 17 +++++++++++------
> >  1 file changed, 11 insertions(+), 6 deletions(-)
> > 
> > diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > index d58c4b4..09a127a 100644
> > --- a/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > +++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > @@ -5,14 +5,19 @@
> >  # but requires more instructions (140% for 70% smaller code) so may be
> >  # slower.
> >  TUNEVALID[thumb] = "Use thumb instructions instead of ARM"
> > -ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
> > -TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' ${ARM_THUMB_M_OPT}', '', d)}"
> > +ARM_THUMB_OPT = "${@['arm', 'thumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
> > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv4',  't',  '', d)}"
> > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv5',  't',  '', d)}"
> > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6',  't',  '', d)}"
> > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', 't2', '', d)}"
> > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7r', 't2', '', d)}"
> > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', 't2', '', d)}"
> > +
> > +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_THUMB_OPT}', '', d)}"
> >  OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ':thumb', '', d)}"
> >  
> > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv4', 'thumb' ], 't', '', d)}"
> > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv5', 'thumb' ], 't', '', d)}"
> > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv6', 'thumb' ], 't', '', d)}"
> > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv7a', 'thumb' ], 't2', '', d)}"
> > +# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_THUMB_OPT to thumb
> > +ARMPKGSFX_THUMB .= "${@ d.getVar('ARM_THUMB_SUFFIX', True) if d.getVar('ARM_THUMB_OPT', True) == 'thumb'] else ''}"
> 
> In branch I've removed extra ']' in this line and moved this patch as
> last in series, because it's really not ready for merge (eglibc-initial
> fails).

Ah, there was another issue in 4/6 and "arm" TUNE_FEATURE wasn't
inherited by higher architectures, so it was correctly forcing "thumb"
mode - that's why eglibc-initial was failing and now it isn't.
 
> Any other comments before I send v2?
> 
> >  # Whether to compile with code to allow interworking between the two
> >  # instruction sets. This allows thumb code to be executed on a primarily
> > -- 
> > 1.8.5.3
> > 
> 
> -- 
> Martin 'JaMa' Jansa     jabber: Martin.Jansa@gmail.com



-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa@gmail.com

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Re: [PATCH][RFC][WIP 3/6] feature-arm-thumb.inc: respect ARM_INSTRUCTION_SET when adding thumb suffix

[Martin Jansa]

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On Fri, Jan 31, 2014 at 07:46:45PM +0100, Martin Jansa wrote:
> On Fri, Jan 31, 2014 at 06:38:00PM +0100, Martin Jansa wrote:
> > On Wed, Jan 22, 2014 at 01:36:08AM +0100, Martin Jansa wrote:
> > > * this means that recipes with ARM_INSTRUCTION_SET explicitly changed
> > >   to arm will be built in feed without thumb suffix
> > > * I'm not sure if the rest of system correctly supports different
> > >   TUNE_PKGARCHs for different recipes, this is one of the reasons why
> > >   this is WIP/RFC
> > > 
> > > Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
> > > ---
> > >  meta/conf/machine/include/arm/feature-arm-thumb.inc | 17 +++++++++++------
> > >  1 file changed, 11 insertions(+), 6 deletions(-)
> > > 
> > > diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > > index d58c4b4..09a127a 100644
> > > --- a/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > > +++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc
> > > @@ -5,14 +5,19 @@
> > >  # but requires more instructions (140% for 70% smaller code) so may be
> > >  # slower.
> > >  TUNEVALID[thumb] = "Use thumb instructions instead of ARM"
> > > -ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
> > > -TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' ${ARM_THUMB_M_OPT}', '', d)}"
> > > +ARM_THUMB_OPT = "${@['arm', 'thumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv4',  't',  '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv5',  't',  '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6',  't',  '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', 't2', '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7r', 't2', '', d)}"
> > > +ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', 't2', '', d)}"
> > > +
> > > +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_THUMB_OPT}', '', d)}"
> > >  OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ':thumb', '', d)}"
> > >  
> > > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv4', 'thumb' ], 't', '', d)}"
> > > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv5', 'thumb' ], 't', '', d)}"
> > > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv6', 'thumb' ], 't', '', d)}"
> > > -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', [ 'armv7a', 'thumb' ], 't2', '', d)}"
> > > +# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_THUMB_OPT to thumb
> > > +ARMPKGSFX_THUMB .= "${@ d.getVar('ARM_THUMB_SUFFIX', True) if d.getVar('ARM_THUMB_OPT', True) == 'thumb'] else ''}"
> > 
> > In branch I've removed extra ']' in this line and moved this patch as
> > last in series, because it's really not ready for merge (eglibc-initial
> > fails).
> 
> Ah, there was another issue in 4/6 and "arm" TUNE_FEATURE wasn't
> inherited by higher architectures, so it was correctly forcing "thumb"
> mode - that's why eglibc-initial was failing and now it isn't.

OMG sorry for noise, yes there is still problem when missing thumb and
arm builds for the same machine with different PKGARCH and
eglibc-initial still fails

| checking build system type... x86_64-pc-linux-gnu
| checking host system type... arm-oe-linux-gnueabi
| checking for arm-oe-linux-gnueabi-gcc... arm-oe-linux-gnueabi-gcc  -march=armv5e -marm -mthumb-interwork --sysroot=/OE/build/oe-core/tmp-eglibc/sysroots/qemuarm
| checking for suffix of object files... configure: error: in `/OE/build/oe-core/tmp-eglibc/work/armv5e-oe-linux-gnueabi/eglibc-initial/2.18-r0/build-arm-oe-linux-gnueabi':
| configure: error: cannot compute suffix of object files: cannot compile
| See `config.log' for more details
| WARNING: /OE/build/oe-core/tmp-eglibc/work/armv5e-oe-linux-gnueabi/eglibc-initial/2.18-r0/temp/run.do_configure.3925:1 exit 1 from
|   /OE/build/oe-core/tmp-eglibc/work/armv5e-oe-linux-gnueabi/eglibc-initial/2.18-r0/eglibc-2.18/libc/configure --host=arm-oe-linux-gnueabi --build=x86_64-linux --prefix=/usr --without-cvs --disable-sanity-checks --with-headers=/OE/build/oe-core/tmp-eglibc/sysroots/qemuarm/usr/include --with-kconfig=/OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin --enable-hacker-mode --enable-addons

config.log:
configure:2768: arm-oe-linux-gnueabi-gcc  -march=armv5e -marm -mthumb-interwork --sysroot=/OE/build/oe-core/tmp-eglibc/sysroots/qemuarm -c  -O2 -pipe -g -feliminate-unused-debug-types  conftest.c >&5
/OE/build/oe-core/tmp-eglibc/work/armv5e-oe-linux-gnueabi/eglibc-initial/2.18-r0/eglibc-2.18/libc/configure: line 2770: arm-oe-linux-gnueabi-gcc: command not found
configure:2772: $? = 127

and the problem is basically that STAGING_BINDIR_TOOLCHAIN points to
different directory when building recipe with thumb enabled and
disabled, in this case gcc was built with thumb enabled and is installed
in:

sysroots/x86_64-linux/usr/bin/armv5te-oe-linux-gnueabi

OE qemuarm@ ~/build/oe-core $ ls /OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5te-oe-linux-gnueabi
arm-oe-linux-gnueabi-addr2line  arm-oe-linux-gnueabi-elfedit
arm-oe-linux-gnueabi-nm       arm-oe-linux-gnueabi-readelf
arm-oe-linux-gnueabi-ar         arm-oe-linux-gnueabi-gprof
arm-oe-linux-gnueabi-objcopy  arm-oe-linux-gnueabi-size
arm-oe-linux-gnueabi-as         arm-oe-linux-gnueabi-ld
arm-oe-linux-gnueabi-objdump  arm-oe-linux-gnueabi-strings
arm-oe-linux-gnueabi-c++filt    arm-oe-linux-gnueabi-ld.bfd
arm-oe-linux-gnueabi-ranlib   arm-oe-linux-gnueabi-strip

but when building eglibc-initial with thumb disalbed, TUNE_PKGARCH
becames armv5e and STAGING_BINDIR_TOOLCHAIN in PATH points to wrong dir:

# $STAGING_BINDIR_TOOLCHAIN
#   set conf/bitbake.conf:354
#     "${STAGING_DIR_NATIVE}${bindir_native}/${TUNE_PKGARCH}${TARGET_VENDOR}-${TARGET_OS}"
STAGING_BINDIR_TOOLCHAIN="/OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5e-oe-linux-gnueabi"

OE qemuarm@ ~/build/oe-core $ ls /OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5e-oe-linux-gnueabi
ls: cannot access /OE/build/oe-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/armv5e-oe-linux-gnueabi: No such file or directory

Any idea how to resolve this correctly?
-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa@gmail.com

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[PATCH][RFC][WIP 4/6] feature-arm-thumb.inc, arch-armv4.inc: Add "arm" to TUNE_FEATURES

[Martin Jansa]

* it will be inherited by all higher architectures, except few exceptions which
  support only thumb and not arm
* respect missing "arm" in TUNE_FEATURES in feature-arm-thumb.inc

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/conf/machine/include/arm/arch-armv4.inc        |  2 +-
 meta/conf/machine/include/arm/feature-arm-thumb.inc | 12 +++++++++---
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/meta/conf/machine/include/arm/arch-armv4.inc b/meta/conf/machine/include/arm/arch-armv4.inc
index c33c816..4b43e9f 100644
--- a/meta/conf/machine/include/arm/arch-armv4.inc
+++ b/meta/conf/machine/include/arm/arch-armv4.inc
@@ -18,7 +18,7 @@ require conf/machine/include/arm/feature-arm-thumb.inc
 AVAILTUNES += "armv4 armv4t"
 ARMPKGARCH_tune-armv4 ?= "armv4"
 ARMPKGARCH_tune-armv4t ?= "armv4"
-TUNE_FEATURES_tune-armv4 ?= "armv4"
+TUNE_FEATURES_tune-armv4 ?= "arm armv4"
 TUNE_FEATURES_tune-armv4t ?= "${TUNE_FEATURES_tune-armv4} thumb"
 PACKAGE_EXTRA_ARCHS_tune-armv4 = "arm armv4"
 PACKAGE_EXTRA_ARCHS_tune-armv4t = "${PACKAGE_EXTRA_ARCHS_tune-armv4} armv4t"
diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc
index 09a127a..aaa39dc 100644
--- a/meta/conf/machine/include/arm/feature-arm-thumb.inc
+++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc
@@ -13,11 +13,17 @@ ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', 't2', '', d
 ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7r', 't2', '', d)}"
 ARM_THUMB_SUFFIX .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', 't2', '', d)}"
 
-TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_THUMB_OPT}', '', d)}"
+# If the device supports ARM, then respect ARM_THUMB_OPT
+# If the defice doesn't support ARM, then always set "thumb" even when
+# some recipe explicitly sets ARM_INSTRUCTION_SET to "arm"
+# (maybe we should show warning in this case)
+ARM_M_OPT = "${@bb.utils.contains('TUNE_FEATURES', 'arm', '${ARM_THUMB_OPT}', 'thumb', d)}"
+
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_M_OPT}', '', d)}"
 OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ':thumb', '', d)}"
 
-# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_THUMB_OPT to thumb
-ARMPKGSFX_THUMB .= "${@ d.getVar('ARM_THUMB_SUFFIX', True) if d.getVar('ARM_THUMB_OPT', True) == 'thumb'] else ''}"
+# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_M_OPT to thumb
+ARMPKGSFX_THUMB .= "${@ d.getVar('ARM_THUMB_SUFFIX', True) if d.getVar('ARM_M_OPT', True) == 'thumb'] else ''}"
 
 # Whether to compile with code to allow interworking between the two
 # instruction sets. This allows thumb code to be executed on a primarily
-- 
1.8.5.3

[PATCH][RFC][WIP 5/6] tune-cortexr4.inc: Add thumb and arm to TUNE_FEATURES

[Martin Jansa]

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/conf/machine/include/tune-cortexr4.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/conf/machine/include/tune-cortexr4.inc b/meta/conf/machine/include/tune-cortexr4.inc
index 57b6717..bde649f 100644
--- a/meta/conf/machine/include/tune-cortexr4.inc
+++ b/meta/conf/machine/include/tune-cortexr4.inc
@@ -10,5 +10,5 @@ TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "armv7r", " -march=armv7-r
 
 AVAILTUNES += "cortexr4"
 ARMPKGARCH_tune-cortexr4 = "armv7r"
-TUNE_FEATURES_tune-cortexr4 = "armv7r vfp cortexr4"
+TUNE_FEATURES_tune-cortexr4 = "armv7r vfp cortexr4 arm thumb"
 PACKAGE_EXTRA_ARCHS_tune-cortexr4 = "${PACKAGE_EXTRA_ARCHS_tune-armv7at} armv7r-vfp"
-- 
1.8.5.3

[PATCH][RFC][WIP 6/6] tune-cortexm3.inc: Cortex-M3 doesn't support ARM instructions

[Martin Jansa]

From: Andrei Gherzan <andrei@gherzan.ro>

Use thumb instructions for Cortex-M3 to avoid this gcc error:
'error: target CPU does not support ARM mode'.

Extracted from "Cortex-M3 Technical Reference Manual":
"The processor implements the ARM v7-M architecture. This includes the entire
16-bit Thumb instruction set and the base Thumb-2 32-bit instruction set
architecture. The processor cannot execute ARM instructions."

Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/conf/machine/include/tune-cortexm3.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/conf/machine/include/tune-cortexm3.inc b/meta/conf/machine/include/tune-cortexm3.inc
index cbc4c0d..780baf4 100644
--- a/meta/conf/machine/include/tune-cortexm3.inc
+++ b/meta/conf/machine/include/tune-cortexm3.inc
@@ -10,5 +10,5 @@ TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "armv7m", " -march=armv7-m
 
 AVAILTUNES += "cortexm3"
 ARMPKGARCH_tune-cortexm3 = "armv7m"
-TUNE_FEATURES_tune-cortexm3 = "armv7m vfp cortexm3"
+TUNE_FEATURES_tune-cortexm3 = "armv7m vfp cortexm3 thumb"
 PACKAGE_EXTRA_ARCHS_tune-cortexm3 = "${PACKAGE_EXTRA_ARCHS_tune-armv7at} armv7m-vfp"
-- 
1.8.5.3