master

TTobias Hieta[libunwind] Stop installing the mach-o module map (#105616)

00ff55d6创建于 2024年9月1日历史提交

文件	最后提交记录	最后更新时间
cmake	[runtimes] Don't link against compiler-rt explicitly when we use -nostdlib++ (#75089) When we use the -nostdlib++ flag, we don't need to explicitly link against compiler-rt, since the compiler already links against it by default. This simplifies the flags that we need to use when building with Clang and GCC, and opens the door to further simplifications since most platforms won't need to detect whether libgcc and libgcc_s are supported anymore. Furthermore, on platforms where -nostdlib++ is used, this patch prevents manually linking compiler-rt *before* other system libraries. For example, Apple platforms have several compiler-rt symbols defined in libSystem.dylib. If we manually link against compiler-rt, we end up overriding the default link order preferred by the compiler and potentially using the symbols from the clang-provided libclang_rt.a library instead of the system provided one. Note that we don't touch how libunwind links against compiler-rt when it builds the .so/.a because libunwind currently doesn't use -nodefaultlibs and we want to avoid rocking the boat too much. rdar://119506163	2 年前
docs	[libunwind][doc] Remove reference to Phabricator from the landing page	2 年前
include	[libunwind] Stop installing the mach-o module map (#105616) libunwind shouldn't know that compact_unwind_encoding.h is part of a MachO module that it doesn't own. Delete the mach-o module map, and let whatever is in charge of the mach-o directory be the one to say how its module is organized and where compact_unwind_encoding.h fits in. (cherry picked from commit 172c4a4a147833f1c08df1555f3170aa9ccb6cbe)	1 年前
src	[libunwind] Fix problems caused by combining BTI and GCS (#102322) The libunwind assembly files need adjustment in order to work correctly when both BTI and GCS are both enabled (which will be the case when using -mbranch-protection=standard): * __libunwind_Registers_arm64_jumpto can't use br to jump to the return location, instead we need to use gcspush then ret. * Because we indirectly call __libunwind_Registers_arm64_jumpto it needs to start with bti jc. * We need to set the GCS GNU property bit when it's enabled. --------- Co-authored-by: Daniel Kiss <daniel.kristof.kiss@gmail.com> (cherry picked from commit 39529107b46032ef0875ac5b809ab5b60cd15a40)	1 年前
test	[libunwind] Add GCS support for AArch64 (#99335) AArch64 GCS (Guarded Control Stack) is similar enough to CET that we can re-use the existing code that is guarded by _LIBUNWIND_USE_CET, so long as we also add defines to locate the GCS stack and pop the entries from it. We also need the jumpto function to exit using br instead of ret, to prevent it from popping the GCS stack. GCS support is enabled using the LIBUNWIND_ENABLE_GCS cmake option. This enables -mbranch-protection=standard, which enables GCS. For the places we need to use GCS instructions we use the target attribute, as there's not a command-line option to enable a specific architecture extension. (cherry picked from commit b32aac4358c1f6639de7c453656cd74fbab75d71)	1 年前
.clang-format	unwind: add a .clang-format This just copies the default clang-format from the LLVM project. Many developers use clang-format to ensure that the code is appropriately formatted, and this commit should also test the git-svn bridge. llvm-svn: 236767	11 年前
CMakeLists.txt	[libunwind] Add GCS support for AArch64 (#99335) AArch64 GCS (Guarded Control Stack) is similar enough to CET that we can re-use the existing code that is guarded by _LIBUNWIND_USE_CET, so long as we also add defines to locate the GCS stack and pop the entries from it. We also need the jumpto function to exit using br instead of ret, to prevent it from popping the GCS stack. GCS support is enabled using the LIBUNWIND_ENABLE_GCS cmake option. This enables -mbranch-protection=standard, which enables GCS. For the places we need to use GCS instructions we use the target attribute, as there's not a command-line option to enable a specific architecture extension. (cherry picked from commit b32aac4358c1f6639de7c453656cd74fbab75d71)	1 年前
LICENSE.TXT	Fix typos throughout the license files that somehow I and my reviewers all missed! Thanks to Alex Bradbury for pointing this out, and the fact that I never added the intended legacy anchor to the developer policy. Add that anchor too. With hope, this will cause the links to all resolve successfully. llvm-svn: 351731	7 年前