arch-arm*: add better support for gcc march extensions

GCC has the ability to pass extensions to the march parameter, which
expand the funcationality of the march.  For example
"-march=armv7ve+simd" adds SIMD to ARMv7.  Currently, there is no way to
expand the march setting without modifying each instance, as you can't
guarantee the ordering when using the existing TUNE_CCARGS.  By
introducing two new variables, TUNE_CCARGS_MARCH and
TUNE_CCARGS_MARCH_OPT, we can enforce that these two go together.

Also, expand existing and create new feature files that use these
variables to expand the functionality.

(From OE-Core rev: 794eb617bfd1997e7a3498812c63a20c58a10554)

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 11 deletions

diff --git a/meta/conf/machine/include/arm/arch-armv8m-main.inc b/meta/conf/machine/include/arm/arch-armv8m-main.inc
index 4dbe401c19..01bef35428 100644
--- a/meta/conf/machine/include/arm/arch-armv8m-main.inc
+++ b/meta/conf/machine/include/arm/arch-armv8m-main.inc
@@ -4,23 +4,15 @@
 DEFAULTTUNE ?= "armv8m-main"
 
 require conf/machine/include/arm/arch-armv8m-base.inc
+require conf/machine/include/arm/feature-arm-dsp.inc
+require conf/machine/include/arm/feature-arm-neon.inc
 
 TUNEVALID[armv8m-main] = "Enable instructions for ARMv8-m.main"
-TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-main', ' -march=armv8-m.main${MARCH_DSP}${MARCH_FPU}', '', d)}"
+TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-main', ' -march=armv8-m.main', '', d)}"
 MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-main', 'armv8m-main:', '', d)}"
 
 TUNECONFLICTS[armv8m-main] = "armv4 armv5 armv6 armv7a"
 
-# FIXME - below taken from meta/conf/machine/include/arm/arch-armv5-dsp.inc and should be put into something more generic
-TUNEVALID[dsp] = "ARM DSP functionality"
-ARMPKGSFX_DSP = "${@bb.utils.contains('TUNE_FEATURES', [ 'dsp' ], 'e', '', d)}"
-MARCH_DSP = "${@bb.utils.contains('TUNE_FEATURES', [ 'dsp' ], '+dsp', '+nodsp', d)}"
-
-# FIXME - Below belongs in meta/conf/machine/include/arm/feature-arm-neon.inc
-TUNEVALID[vfpv5spd16] = "Enable Vector Floating Point Version 5, Single Precision. with 16 registers (fpv5-sp-d16) unit."
-TUNE_CCARGS_MFPU .= "${@bb.utils.contains('TUNE_FEATURES', 'vfpv5spd16', 'fpv5-sp-d16', '', d)}"
-MARCH_FPU = "${@bb.utils.contains('TUNE_FEATURES', [ 'vfpv5spd16' ], '+fp', '+nofp', d)}"
-
 AVAILTUNES                                      += "armv8m-main armv8m-maine armv8m-main-vfpv5spd16 armv8m-maine-vfpv5spd16"
 ARMPKGARCH:tune-armv8m-main                      = "armv8m-main"
 ARMPKGARCH:tune-armv8m-maine                     = "armv8m-main"