12012/03/30 - Mark Hatle <mark.hatle@windriver.com> 2 - Initial version 3 4Most of the items for the X86 architectures are defined in the single 5arch-x86 file. 6 7Three ABIs are define, m32, mx32 and m64. 8 9The following is the list of X86 specific variables: 10 11X86ARCH32 - This is the 32-bit architecture GNU canonical arch, TUNE_ARCH. 12 13X86ARCH64 - This is the 64-bit architecture GNU canonical arch, TUNE_ARCH. 14 15The TUNE_PKGARCH is defined as follows: 16 17TUNE_PKGARCH = ${TUNE_PKGARCH_tune-${DEFAULTTUNE}} 18 19The package architecture for 32-bit targets is historical and generally 20set to to match the core compatible processor type, i.e. i386. 21 22For 64-bit architectures, the architecture is expected to end in '_64'. 23 24If the x32 ABI is used, then the _64 is further extended with a '_x32'. 25