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linux/arch/xtensa/lib
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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>
History 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 treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
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