| |
| TUNEVALID[thumb] = "Support Thumb instructions" |
| |
| # If the device supports ARM, then respect ARM_THUMB_OPT (which can be "arm" or "thumb") |
| # 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', '${ARM_THUMB_OPT}', 'thumb', d)}" |
| |
| python () { |
| if bb.utils.contains('TUNE_FEATURES', 'thumb', False, True, d): |
| return |
| selected = d.getVar('ARM_INSTRUCTION_SET') |
| if selected == None: |
| return |
| used = d.getVar('ARM_M_OPT') |
| if selected != used: |
| pn = d.getVar('PN') |
| bb.warn("Recipe '%s' selects ARM_INSTRUCTION_SET to be '%s', but tune configuration overrides it to '%s'" % (pn, selected, used)) |
| } |
| |
| TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_M_OPT}', '', d)}" |
| |
| ARM_THUMB_SUFFIX = "t2" |
| ARM_THUMB_SUFFIX_armv4 = "t" |
| ARM_THUMB_SUFFIX_armv5 = "t" |
| ARM_THUMB_SUFFIX_armv6 = "t" |
| |
| # Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_M_OPT to thumb |
| ARMPKGSFX_THUMB .= "${@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)}" |