unwind: Allow the building of libunwind for MIPS.
Summary:
Currently, libunwind doesn't support MIPS. However, with this patch
we do allow the library to build, and we warn the user about the lack of
support for MIPS. Also, the dummy unw_getcontext() implementation for MIPS just
traps on function entry in order to avoid any confusion with silent/weird
failures at runtime.
This allows us to test an LLVM-based toolchain without the dependency on a
GCC toolchain. Of course, C++ exception handling and other things that depend
on stack unwinding will not work until we add a proper implementation of the
stub functions.
Reviewers: compnerd, logan
Subscribers: dsanders, llvm-commits
Differential Revision: http://reviews.llvm.org/D13160
llvm-svn: 248673
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 8518eb54f3aa48130307563a2bf7f23493e63fca
diff --git a/src/libunwind.cpp b/src/libunwind.cpp
index a23dfcf..f9f32f0 100644
--- a/src/libunwind.cpp
+++ b/src/libunwind.cpp
@@ -64,6 +64,8 @@
#elif defined(__or1k__)
new ((void *)cursor) UnwindCursor<LocalAddressSpace, Registers_or1k>(
context, LocalAddressSpace::sThisAddressSpace);
+#elif defined(__mips__)
+#warning The MIPS architecture is not supported.
#else
#error Architecture not supported
#endif