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文件	最后提交记录	最后更新时间
linux	[libc] Refactor AUXV handling with new auxv.h header library (#162326) Closes https://github.com/llvm/llvm-project/issues/153666 This patch introduces a new centralized AUXV (auxiliary vector) handling mechanism for LLVM libc on Linux, replacing the previous scattered implementation across multiple files. ## Key Changes: ### New Files: - **libc/src/__support/OSUtil/linux/auxv.h**: New header library providing a clean interface for AUXV access with: - auxv::Entry struct for AUXV entries (type and value) - auxv::Vector class with iterator support for traversing AUXV - auxv::get() function for retrieving specific AUXV values - Thread-safe initialization with fallback mechanisms (prctl and /proc/self/auxv) ### Modified Files: 1. **libc/src/__support/OSUtil/linux/CMakeLists.txt**: - Added auxv header library declaration with proper dependencies: - libc.hdr.fcntl_macros - libc.src.__support.OSUtil.osutil - libc.src.__support.common - libc.src.__support.CPP.optional - libc.src.__support.threads.callonce 2. **libc/config/linux/app.h**: - Removed AuxEntry struct (moved to auxv.h as auxv::Entry) - Removed auxv_ptr from AppProperties struct - Simplified application properties structure 3. **libc/src/sys/auxv/linux/getauxval.cpp**: - Completely refactored to use new auxv.h interface - Removed ~200 lines of complex initialization code - Simplified to just call auxv::get() function - Removed dependencies to external symbols (mman, prctl, fcntl, read, close, open) 4. **libc/src/sys/auxv/linux/CMakeLists.txt**: - Updated dependencies to use new auxv header library - Removed dependencies to external symbols (prctl, mman, fcntl, unistd, etc.) 5. **libc/startup/linux/do_start.cpp**: - Updated to use new auxv::Vector interface - Changed from pointer-based to iterator-based AUXV traversal - Updated field names (aux_entry->id → aux_entry.type, aux_entry->value → aux_entry.val) - Added call to auxv::Vector::initialize_unsafe() for early AUXV setup 6. **libc/startup/linux/CMakeLists.txt**: - Added dependency on libc.src.__support.OSUtil.linux.auxv	10 个月前
CMakeLists.txt	[libc] implement sys/getauxval (#78493) This PR implements sys/getauxval that can be used in both overlay builds and full builds.	2 年前
getauxval.h	[libc] implement vdso (#91572)	1 年前