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d955189ae4
This adds code to the load and store emulation code to byte-swap the data appropriately when the process being emulated is set to the opposite endianness to that of the kernel. This also enables the emulation for the multiple-register loads and stores (lmw, stmw, lswi, stswi, lswx, stswx) to work for little-endian. In little-endian mode, the partial word at the end of a transfer for lsw*/stsw* (when the byte count is not a multiple of 4) is loaded/stored at the least-significant end of the register. Additionally, this fixes a bug in the previous code in that it could call read_mem/write_mem with a byte count that was not 1, 2, 4 or 8. Note that this only works correctly on processors with "true" little-endian mode, such as IBM POWER processors from POWER6 on, not the so-called "PowerPC" little-endian mode that uses address swizzling as implemented on the old 32-bit 603, 604, 740/750, 74xx CPUs. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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| .. | ||
| boot | ||
| configs | ||
| crypto | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| oprofile | ||
| perf | ||
| platforms | ||
| purgatory | ||
| sysdev | ||
| tools | ||
| xmon | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||
| Makefile.postlink | ||