3 Commits

Author	SHA1	Message	Date
Nikita Popov	bed1c7f061	[ARM] Convert some tests to opaque pointers (NFC)	2022-12-19 12:45:35 +01:00
Daniel Kiss	b0343a38a5	Support the min of module flags when linking, use for AArch64 BTI/PAC-RET ... LTO objects might compiled with different `mbranch-protection` flags which will cause an error in the linker. Such a setup is allowed in the normal build with this change that is possible. Reviewed By: pcc Differential Revision: https://reviews.llvm.org/D123493	2022-04-13 09:31:51 +02:00
Ties Stuij	0fbb17458a	[ARM] Implement setjmp BTI placement for PACBTI-M ... This patch intends to guard indirect branches performed by longjmp by inserting BTI instructions after calls to setjmp. Calls with 'returns-twice' are lowered to a new pseudo-instruction named t2CALL_BTI that is later expanded to a bundle of {tBL,t2BTI}. This patch is part of a series that adds support for the PACBTI-M extension of the Armv8.1-M architecture, as detailed here: https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/armv8-1-m-pointer-authentication-and-branch-target-identification-extension The PACBTI-M specification can be found in the Armv8-M Architecture Reference Manual: https://developer.arm.com/documentation/ddi0553/latest The following people contributed to this patch: - Alexandros Lamprineas - Ties Stuij Reviewed By: labrinea Differential Revision: https://reviews.llvm.org/D112427	2021-12-06 11:07:10 +00:00