PointerToGOT lowering was accidentally changed from Delta32 to Delta64 in
db37225803. This patch moves it back to Delta32 and renames the generic
aarch64 edge to Delta32ToGOT to avoid the ambiguity.
No test case yet -- I haven't figured out how to write a succinct test case
(this typically appears in CIEs in eh-frames).
Implements TLS descriptor relocations in JITLink ELF/AARCH64 backend and support the relevant runtime functions in ELFNixPlatform.
Unlike traditional TLS model, TLS descriptor model requires linker to return the "offset" from thread pointer via relocaiton not the actual pointer to thread local variable. There is no public libc api for adding new allocations to TLS block dynamically which thread pointer points to. So, we support this by taking delta from thread base pointer to the actual thread local variable in our allocated section.
Reviewed By: lhames
Differential Revision: https://reviews.llvm.org/D128601
Implements MoveWide16 generic edge kind that can be used to patch MOVZ/MOVK (imm16) instructions.
Reviewed By: lhames
Differential Revision: https://reviews.llvm.org/D127584
Lift fixup functions from aarch64.cpp to aarch64.h so that they have better chance of getting inlined. Also, adds some comments documenting the purpose of functions.
Reviewed By: sgraenitz
Differential Revision: https://reviews.llvm.org/D127559
Unifies GOT/PLT table managers of ELF and MachO on aarch64 architecture. Additionally, it migrates table managers from PerGraphGOTAndPLTStubsBuilder to generic crtp TableManager.
Reviewed By: lhames
Differential Revision: https://reviews.llvm.org/D127558
The separate isLoadStoreImm12 predicate will be used for validating ELF/aarch64
ldst relocation types.
Reviewed By: lhames, sgraenitz
Differential Revision: https://reviews.llvm.org/D126628
This patch moves the aarch64 fixup logic from the MachO/arm64 backend to
aarch64.h header so that it can be re-used in the ELF/aarch64 backend. This
significantly expands relocation support in the ELF/aarch64 backend.
Reviewed By: lhames, sgraenitz
Differential Revision: https://reviews.llvm.org/D126286
Set up basic infrastructure for 64-bit ARM architecture support in JITLink. It allows for loading a minimal object file and resolving a single relocation. Advanced features like GOT and PLT handling or relaxations were intentionally left out for the moment.
This patch follows the idea to keep implementations for ARM (32-bit) and Aaarch64 (64-bit) separate, because:
* it might be easier to share code with the MachO "arm64" JITLink backend
* LLVM has individual targets for ARM and Aaarch64 as well
Reviewed By: lhames
Differential Revision: https://reviews.llvm.org/D108986
Lang Hames