Max Filippov 61a6b91283 xtensa: don't use a12 in __xtensa_copy_user in call0 ABI ...

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>

2021-10-18 22:19:34 -07:00

..

checksum.S

xtensa: propagate the calling conventions change down into csum_partial_copy_generic()

2020-08-20 15:45:21 -04:00

Makefile

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memcopy.S

xtensa: abstract 'entry' and 'retw' in assembly code

2019-07-08 10:04:48 -07:00

memset.S

xtensa: abstract 'entry' and 'retw' in assembly code

2019-07-08 10:04:48 -07:00

pci-auto.c

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strncpy_user.S

xtensa: don't use a12 in strncpy_user

2021-10-18 22:19:34 -07:00

strnlen_user.S

xtensa: abstract 'entry' and 'retw' in assembly code

2019-07-08 10:04:48 -07:00

usercopy.S

xtensa: don't use a12 in __xtensa_copy_user in call0 ABI

2021-10-18 22:19:34 -07:00