a12 is callee-saved register in xtensa call0 ABI, so a function must not change it. The main unaligned copy loop of __xtensa_copy_user uses all low-numbered registers, so a register must be spilled to avoid using a12 as a loop counter. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> |
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| .. | ||
| checksum.S | ||
| Makefile | ||
| memcopy.S | ||
| memset.S | ||
| pci-auto.c | ||
| strncpy_user.S | ||
| strnlen_user.S | ||
| usercopy.S | ||