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(parent: 408b1d3) | patch
xtensa: support artificial division by 0 exception
authorMax Filippov <jcmvbkbc@gmail.com>
Fri, 13 May 2022 15:11:14 +0000 (08:11 -0700)
committerMax Filippov <jcmvbkbc@gmail.com>
Tue, 17 May 2022 10:35:43 +0000 (03:35 -0700)
commitd74862007e0849fad8ba86447e6f05928f920640
tree3b4b0e3aa88dbb682fce761e7b4a79fe5f586c0btree
parent408b1d3c0ec8e4f36603092573108a6d3daa07a8commit | diff
xtensa: support artificial division by 0 exception

On xtensa cores wihout hardware division option division support
functions from libgcc react to division by 0 attempt by executing
illegal instruction followed by the characters 'DIV0'. Recognize this
pattern in illegal instruction exception handler and convert it to
division by 0.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
arch/xtensa/kernel/traps.c diff | blob | history
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