1*4882a593Smuzhiyun 2*4882a593SmuzhiyunTUNEVALID[thumb] = "Support Thumb instructions" 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun# If the device supports ARM, then respect ARM_THUMB_OPT (which can be "arm" or "thumb") 5*4882a593Smuzhiyun# If the device doesn't support ARM, then always set "thumb" even when 6*4882a593Smuzhiyun# some recipe explicitly sets ARM_INSTRUCTION_SET to "arm" 7*4882a593SmuzhiyunARM_THUMB_OPT = "${@['arm', 'thumb'][d.getVar('ARM_INSTRUCTION_SET') == 'thumb']}" 8*4882a593SmuzhiyunARM_M_OPT = "${@bb.utils.contains('TUNE_FEATURES', 'arm', '${ARM_THUMB_OPT}', 'thumb', d)}" 9*4882a593Smuzhiyun 10*4882a593Smuzhiyunpython () { 11*4882a593Smuzhiyun if bb.utils.contains('TUNE_FEATURES', 'thumb', False, True, d): 12*4882a593Smuzhiyun return 13*4882a593Smuzhiyun selected = d.getVar('ARM_INSTRUCTION_SET') 14*4882a593Smuzhiyun if selected == None: 15*4882a593Smuzhiyun return 16*4882a593Smuzhiyun used = d.getVar('ARM_M_OPT') 17*4882a593Smuzhiyun if selected != used: 18*4882a593Smuzhiyun pn = d.getVar('PN') 19*4882a593Smuzhiyun bb.warn("Recipe '%s' selects ARM_INSTRUCTION_SET to be '%s', but tune configuration overrides it to '%s'" % (pn, selected, used)) 20*4882a593Smuzhiyun} 21*4882a593Smuzhiyun 22*4882a593SmuzhiyunTUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', ' -m${ARM_M_OPT}', '', d)}" 23*4882a593Smuzhiyun 24*4882a593SmuzhiyunARM_THUMB_SUFFIX = "t2" 25*4882a593SmuzhiyunARM_THUMB_SUFFIX:armv4 = "t" 26*4882a593SmuzhiyunARM_THUMB_SUFFIX:armv5 = "t" 27*4882a593SmuzhiyunARM_THUMB_SUFFIX:armv6 = "t" 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun# Add suffix from ARM_THUMB_SUFFIX only if after all this we still set ARM_M_OPT to thumb 30*4882a593SmuzhiyunARMPKGSFX_THUMB .= "${@bb.utils.contains('TUNE_FEATURES', 'thumb', '${ARM_THUMB_SUFFIX}', '', d) if d.getVar('ARM_M_OPT') == 'thumb' else ''}" 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun# what about armv7m devices which don't support -marm (e.g. Cortex-M3)? 33*4882a593SmuzhiyunTARGET_CC_KERNEL_ARCH += "${@bb.utils.contains('TUNE_FEATURES', 'thumb', '-mno-thumb-interwork -marm', '', d)}" 34