| Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 1 | 2012/03/30 - Mark Hatle <mark.hatle@windriver.com> |
| 2 | - Initial version |
| 3 | |
| 4 | Most of the items for the X86 architectures are defined in the single |
| 5 | arch-x86 file. |
| 6 | |
| 7 | Three ABIs are define, m32, mx32 and m64. |
| 8 | |
| 9 | The following is the list of X86 specific variables: |
| 10 | |
| 11 | X86ARCH32 - This is the 32-bit architecture GNU canonical arch, TUNE_ARCH. |
| 12 | |
| 13 | X86ARCH64 - This is the 64-bit architecture GNU canonical arch, TUNE_ARCH. |
| 14 | |
| 15 | The TUNE_PKGARCH is defined as follows: |
| 16 | |
| 17 | TUNE_PKGARCH = ${TUNE_PKGARCH_tune-${DEFAULTTUNE}} |
| 18 | |
| 19 | The package architecture for 32-bit targets is historical and generally |
| 20 | set to to match the core compatible processor type, i.e. i386. |
| 21 | |
| 22 | For 64-bit architectures, the architecture is expected to end in '_64'. |
| 23 | |
| 24 | If the x32 ABI is used, then the _64 is further extended with a '_x32'. |