> On Jul 27, 2016, at 10:55 AM, Max Krummenacher <max.oss...@gmail.com> wrote: > > _armv4t, _armv5te are not (no longer?) set as MACHINEOVERRIDES if an armv4t > or armv5te tune is set. > Thus the default ARM_INSTRUCTION_SET ??= "thumb" kicks in. > > Set the override to _armv4, _armv5 to get the expected ARM_INSTRUCTION_SET. > > While at it cleanup comment to keep up with changes. > > Build tested with a build for a _armv5te machine.
this is ok.
>
> Signed-off-by: Max Krummenacher <max.krummenac...@toradex.com>
> ---
> conf/distro/include/angstrom.inc | 19 +++++++++----------
> 1 file changed, 9 insertions(+), 10 deletions(-)
>
> diff --git a/conf/distro/include/angstrom.inc
> b/conf/distro/include/angstrom.inc
> index 778ab10..09f6121 100644
> --- a/conf/distro/include/angstrom.inc
> +++ b/conf/distro/include/angstrom.inc
> @@ -46,16 +46,6 @@ require conf/distro/include/angstrom-${TCLIBC}.inc
> require conf/distro/include/angstrom-java.inc
> require conf/distro/include/angstrom-jalimo.conf
>
> -# ARM920T and up can use thumb mode to decrease binary size at the expense
> of speed
> -# (the complete story is a bit more nuanced due to cache starvation)
> -# Angstrom turns on thumb for armv4t machine according to this RFC:
> -#
> http://lists.linuxtogo.org/pipermail/angstrom-distro-devel/2008-October/002714.html
> -
> -ARM_INSTRUCTION_SET ??= "thumb"
> -ARM_INSTRUCTION_SET_armv4t ?= "arm"
> -ARM_INSTRUCTION_SET_armv5te ?= "arm"
> -ARM_INSTRUCTION_SET_armv6 ?= "arm"
> -
> # "arm" "thumb"
> # The instruction set the compiler should use when generating application
> # code. The kernel is always compiled with arm code at present. arm code
> @@ -63,6 +53,15 @@ ARM_INSTRUCTION_SET_armv6 ?= "arm"
> # encoded RISC sub-set. Thumb code is smaller (maybe 70% of the ARM size)
> # but requires more instructions (140% for 70% smaller code) so may be
> # slower.
> +# thumb 2 is an evolution of the original thumb instruction set which
> strives
> +# to keep the code size advantages without the performance penality.
> +# When setting thumb the compiler will use thumb or thumb2 depending on
> what
> +# the selected arm architecture.
> +
> +ARM_INSTRUCTION_SET ??= "thumb"
> +ARM_INSTRUCTION_SET_armv4 ?= "arm"
> +ARM_INSTRUCTION_SET_armv5 ?= "arm"
> +ARM_INSTRUCTION_SET_armv6 ?= "arm"
>
> #Use this variable in feeds and other parts that need a URI
> ANGSTROM_URI ?= "http://feeds.angstrom-distribution.org";
> --
> 2.5.5
>
>
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> Angstrom-distro-devel@linuxtogo.org
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