11 May
2023
11 May
'23
2:52 p.m.
For example, on x86_64, value of sp on begin of callee must be 16n-8, because sp was 16n before instruction "call" on caller. But initilize value of sp on signal stack is 16n instead of 16n-8. It may cause error when store and load xmm register.
add "force_align_arg_pointer" to hanlder of signal can avoid potential risks