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ad9e674fa0
This is a prerequisite for upstreaming our LLVM patches, as our current hack forcing `-ftls-model=initial-exec` in the Clang driver is not acceptable upstream. Currently, our kernel-managed TLS implementation limits us to only having a single block of storage for all thread-local variables that's initialized at load time. This PR merely implements the dynamic TLS interface (`__tls_get_addr` and TLSDESC) on top of our static TLS infrastructure. The current model's limitations still stand: - a single static TLS block is reserved at load time, `dlopen()`-ing shared libraries that define thread-local variables might cause us to run out of space. - the initial TLS image is not changeable post-load, so `dlopen()`-ing libraries with non-zero-initialized TLS variables is not supported. The way we repurpose `ti_module` to mean "offset within static TLS block" instead of "module index" is not ABI-compliant. |
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| .. | ||
| Arch | ||
| AuxiliaryVector.h | ||
| CMakeLists.txt | ||
| Core.h | ||
| DynamicLinker.cpp | ||
| DynamicLinker.h | ||
| DynamicLoader.cpp | ||
| DynamicLoader.h | ||
| DynamicObject.cpp | ||
| DynamicObject.h | ||
| ELFABI.h | ||
| Hashes.h | ||
| Image.cpp | ||
| Image.h | ||
| Relocation.cpp | ||
| Relocation.h | ||
| Validation.cpp | ||
| Validation.h | ||