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| H A D | unwind_arm32.c | 19b3fe6c5a72925c394f5eb1397cfcf17553f01d Thu Jul 23 11:31:23 UTC 2020 Angelina Zhao <xuemingzhao@asrmicro.com> core: arm: fix the unwind stack failure with __no_return function
unwind operation use LR instead of PC to locate unwind data. In some
case, the compiler removes all the extra instrustions after a branch to
__no_return function, and then LR saves the address of next function,
rather than the caller of the __no_return function, leading to unwind
failure.
The fix manually adjust the LR value to match the search algorithm so
as to locate the correct caller in unwind stack operation.
Signed-off-by: Angelina Zhao <xuemingzhao@asrmicro.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
[jf: reformat the commit description]
Signed-off-by: Jerome Forissier <jerome@forissier.org>
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