1*4882a593Smuzhiyun2012/03/30 - Mark Hatle <mark.hatle@windriver.com> 2*4882a593Smuzhiyun - Initial Revision 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunThe ARM architecture definitions are split among a number of files. 5*4882a593SmuzhiyunThe primary definitions for the variables are handled by the core 6*4882a593Smuzhiyunarch-arm.inc file. 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunTUNE_ARCH is set to either "arm" or "armeb" depending on the value 9*4882a593Smuzhiyunof the existence of the "bigendian" feature in a given tune. 10*4882a593Smuzhiyun 11*4882a593SmuzhiyunA small set of ARM specific variables have been defined to allow 12*4882a593SmuzhiyunTUNE_PKGARCH to be automatically defined. Optimized tunings must NOT 13*4882a593Smuzhiyunchange the definiton of TUNE_PKGARCH. TUNE_PKGACH:tune-<tune> will be 14*4882a593Smuzhiyunignored. The format of the package arch is enforced by the TUNE_PKGARCH 15*4882a593Smuzhiyundefault. The format must be of the form: 16*4882a593Smuzhiyun<armversion>[t][e][hf][b][-vfp][-neon] 17*4882a593Smuzhiyun 18*4882a593SmuzhiyunTUNE_PKGARCH is defined as: 19*4882a593Smuzhiyun${ARMPKGARCH}${ARMPKGSFX_THUMB}${ARMPKGSFX_DSP}${ARMPKGSFX_EABI}${ARMPKGSFX_ENDIAN}${ARMPKGSFX_FPU} 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunARMPKGARCH - This is the core package arch component specified by each 22*4882a593Smuzhiyuntuning. This is the primary identifier of a tuning. Usual values are: 23*4882a593Smuzhiyunarm, armv4, armv5, armv6, armv7a, etc. 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunARMPKGSFX_THUMB - This is the thumb specific suffix. Curently it is 26*4882a593Smuzhiyundefined in feature-arm-thumb.inc. 27*4882a593Smuzhiyun 28*4882a593SmuzhiyunARMPKGSFX_DSP - This is the DSP specific suffix. Currently this is set 29*4882a593Smuzhiyunto 'e' when on armv5 and the dsp feature is enabled. 30*4882a593Smuzhiyun 31*4882a593SmuzhiyunARMPKGSFX_EABI - This is the eabi specific suffix. There are currently 32*4882a593Smuzhiyuntwo defined ABIs specificed, standard EABI and Hard Float (VFP) EABI. 33*4882a593SmuzhiyunWhen the callconvention-hard is enabled, "hf" is specified, otherwise it 34*4882a593Smuzhiyunis blank. 35*4882a593Smuzhiyun 36*4882a593SmuzhiyunARMPKGSFX_ENDIAN - This is the endian specific suffix. It is defined in 37*4882a593Smuzhiyunthe core arch-arm.inc file. 38*4882a593Smuzhiyun 39*4882a593SmuzhiyunARMPKGSFX_FPU - This is the FPU specific suffix. The suffix indicates 40*4882a593Smuzhiyunspecific FPU optimizations. 'vfp' and 'neon' are both defined. 41