[OE-core] [PATCH 2/2] gcc: Avoid non-aligned access for ARM5e

[Jens Rehsack]

> Am 12.10.2015 um 18:32 schrieb Khem Raj <raj.khem at gmail.com>:
> 
> On Mon, Oct 12, 2015 at 9:01 AM, Jens Rehsack <rehsack at gmail.com> wrote:
>> 
>>> Am 08.10.2015 um 18:40 schrieb Khem Raj <raj.khem at gmail.com>:
>> [...]
>> During hacking on the fix in meta/conf/machine/ I recognized that the expected thump suffix in meta/conf/machine/include/tune-arm926ejs.inc
>> isn't there and modified the line as
>> 
>> diff --git a/meta/conf/machine/include/tune-arm926ejs.inc b/meta/conf/machine/include/tune-arm926ejs.inc
>> index 335e4e0..a310c9d 100644
>> --- a/meta/conf/machine/include/tune-arm926ejs.inc
>> +++ b/meta/conf/machine/include/tune-arm926ejs.inc
>> @@ -8,4 +8,4 @@ TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "arm926ejs", " -mtune=arm9
>> AVAILTUNES += "arm926ejs"
>> ARMPKGARCH_tune-arm926ejs = "arm926ejs"
>> TUNE_FEATURES_tune-arm926ejs = "${TUNE_FEATURES_tune-armv5te} arm926ejs"
>> -PACKAGE_EXTRA_ARCHS_tune-arm926ejs = "${PACKAGE_EXTRA_ARCHS_tune-armv5te} arm926ejste"
>> +PACKAGE_EXTRA_ARCHS_tune-arm926ejs = "${PACKAGE_EXTRA_ARCHS_tune-armv5te} arm926ejste arm926ejse"
>> 
> 
> this is ok ?

From 

TUNE_FEATURES="${TUNE_FEATURES_tune-${DEFAULTTUNE}}"

is ok probably the wrong question ;)

Setting DEFAULTTUNE to arm926ejs results in expanding PACKAGE_ARCH from TUNE_PKGARCH which is combined via
"${ARMPKGARCH}${ARMPKGSFX_THUMB}${ARMPKGSFX_DSP}${ARMPKGSFX_EABI}${ARMPKGSFX_ENDIAN}${ARMPKGSFX_FPU}" in
meta/conf/machine/include/arm/arch-arm.inc:12

Since ARMPKGSFX_THUMB is set to "t" (or "t2" on ARMv6+) only when thumb code should be generated and
ARMPKGSFX_DSP is set to "e" when DSP is featured, both have to be recognized.

The entire construct doesn't feel "ok'ish" - but it works and is more or less reliable ...

Cheers
-- 
Jens Rehsack - rehsack at gmail.com