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authorRich Felker <dalias@aerifal.cx>2018-08-29 12:48:42 -0400
committerRich Felker <dalias@aerifal.cx>2018-08-29 12:48:42 -0400
commit0ec49dab6794166d67fae4764ce7fdea42ea6103 (patch)
treeb2904c92d52d5a884c7e3203b6906b446403702d /src/search
parent9cdaf1a86bf7790c8dec749118392ee78101ee37 (diff)
downloadmusl-0ec49dab6794166d67fae4764ce7fdea42ea6103.tar.gz
fix async thread cancellation on powerpc64
entering the local entry point for __cancel from __cp_cancel is valid if __cp_cancel was reached from __syscall_cp, since both are in libc and share the same TOC pointer, but it is not valid if __cp_cancel was reached when cancel_handler rewrote the program counter for asynchronous cancellation of code outside libc. to ensure __cancel is entered with a valid TOC pointer, recompute the correct value in a PC-relative manner before jumping.
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