diff options
Diffstat (limited to 'meta/conf/machine/include/arm/feature-arm-thumb.inc')
| -rw-r--r-- | meta/conf/machine/include/arm/feature-arm-thumb.inc | 46 |
1 files changed, 15 insertions, 31 deletions
diff --git a/meta/conf/machine/include/arm/feature-arm-thumb.inc b/meta/conf/machine/include/arm/feature-arm-thumb.inc index 5632171863..1c9a118160 100644 --- a/meta/conf/machine/include/arm/feature-arm-thumb.inc +++ b/meta/conf/machine/include/arm/feature-arm-thumb.inc @@ -1,49 +1,33 @@ -# The instruction set the compiler should use when generating application -# code. The kernel is always compiled with arm code at present. arm code -# is the original 32 bit ARM instruction set, thumb code is the 16 bit -# 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. -TUNEVALID[thumb] = "Use thumb instructions instead of ARM" -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 .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', 't2', '', d)}" + +TUNEVALID[thumb] = "Support Thumb instructions" # If the device supports ARM, then respect ARM_THUMB_OPT (which can be "arm" or "thumb") -# If the defice doesn't support ARM, then always set "thumb" even when +# If the device doesn't support ARM, then always set "thumb" even when # some recipe explicitly sets ARM_INSTRUCTION_SET to "arm" +ARM_THUMB_OPT = "${@['arm', 'thumb'][d.getVar('ARM_INSTRUCTION_SET') == 'thumb']}" ARM_M_OPT = "${@bb.utils.contains('TUNE_FEATURES', 'arm', '${ARM_THUMB_OPT}', 'thumb', d)}" + python () { - if bb.utils.contains('TUNE_FEATURES', 'thumb', 'False', 'True', d): + if bb.utils.contains('TUNE_FEATURES', 'thumb', False, True, d): return - selected = d.getVar('ARM_INSTRUCTION_SET', True) + selected = d.getVar('ARM_INSTRUCTION_SET') if selected == None: return - used = d.getVar('ARM_M_OPT', True) + used = d.getVar('ARM_M_OPT') if selected != used: - pn = d.getVar('PN', True) + pn = d.getVar('PN') bb.warn("Recipe '%s' selects ARM_INSTRUCTION_SET to be '%s', but tune configuration overrides it to '%s'" % (pn, selected, used)) } TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_M_OPT}', '', d)}" -OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ':thumb', '', d)}" -# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_M_OPT to thumb -ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', '${ARM_THUMB_SUFFIX}', '', d) if d.getVar('ARM_M_OPT', True) == 'thumb' else ''}" +ARM_THUMB_SUFFIX = "t2" +ARM_THUMB_SUFFIX:armv4 = "t" +ARM_THUMB_SUFFIX:armv5 = "t" +ARM_THUMB_SUFFIX:armv6 = "t" -# Whether to compile with code to allow interworking between the two -# instruction sets. This allows thumb code to be executed on a primarily -# arm system and vice versa. It is strongly recommended that DISTROs not -# turn this off - the actual cost is very small. -TUNEVALID[no-thumb-interwork] = "Disable mixing of thumb and ARM functions" -THUMB_TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'no-thumb-interwork', ' -mno-thumb-interwork', ' -mthumb-interwork', d)}" -THUMB_OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'no-thumb-interwork', ':thumb-interwork', '', d)}" -TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' ${THUMB_TUNE_CCARGS}', '', d)}" -OVERRIDES .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', '${THUMB_OVERRIDES}', '', d)}" +# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_M_OPT to thumb +ARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', '${ARM_THUMB_SUFFIX}', '', d) if d.getVar('ARM_M_OPT') == 'thumb' else ''}" # what about armv7m devices which don't support -marm (e.g. Cortex-M3)? TARGET_CC_KERNEL_ARCH += "${@bb.utils.contains('TUNE_FEATURES', 'thumb', '-mno-thumb-interwork -marm', '', d)}" |