Date: Fri, 30 Nov 2018 13:57:25 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 233664] enable LLVM libunwind for armv7, armv6, arm Message-ID: <bug-233664-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233664 Bug ID: 233664 Summary: enable LLVM libunwind for armv7, armv6, arm Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: misc Assignee: bugs@FreeBSD.org Reporter: emaste@freebsd.org Blocks: 233094 arm currently uses Clang and LLD, but LLVM_LIBUNWIND is not enabled. For armv7 there are a couple of minor conflicts with other unwind helpers, and we need to update the symbol version map. The hack below gets it to build, but needs to be cleaned up. arm and armv6 fail with: /.../arm.arm/tmp/usr/lib/libcxxrt.so: undefined reference to `__gnu_unwind_frame@GCC_3.5' /.../arm.arm/tmp/usr/lib/libcxxrt.so: undefined reference to `_Unwind_VRS_Set@GCC_3.5' /.../arm.arm/tmp/usr/lib/libcxxrt.so: undefined reference to `_Unwind_VRS_Get@GCC_3.5' armv7 hack patch: diff --git a/contrib/compiler-rt/lib/builtins/gcc_personality_v0.c b/contrib/compiler-rt/lib/builtins/gcc_personality_v0.c index 0bc765624564..034d323814c4 100644 --- a/contrib/compiler-rt/lib/builtins/gcc_personality_v0.c +++ b/contrib/compiler-rt/lib/builtins/gcc_personality_v0.c @@ -145,6 +145,7 @@ static uintptr_t readEncodedPointer(const uint8_t** data, uint8_t encoding) #if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \ !defined(__ARM_DWARF_EH__) #define USING_ARM_EHABI 1 +struct _Unwind_Exception; _Unwind_Reason_Code __gnu_unwind_frame(struct _Unwind_Exception *, struct _Unwind_Context *); #endif diff --git a/contrib/compiler-rt/lib/builtins/unwind-ehabi-helpers.h b/contrib/compiler-rt/lib/builtins/unwind-ehabi-helpers.h index ccb0765975a9..864dba716e9b 100644 --- a/contrib/compiler-rt/lib/builtins/unwind-ehabi-helpers.h +++ b/contrib/compiler-rt/lib/builtins/unwind-ehabi-helpers.h @@ -39,8 +39,6 @@ #define _URC_OK 0 #define _URC_FAILURE 9 -typedef uint32_t _Unwind_State; - #if !defined(_US_UNWIND_FRAME_STARTING) #define _US_UNWIND_FRAME_STARTING ((_Unwind_State)1) #endif diff --git a/lib/libgcc_s/Version.map b/lib/libgcc_s/Version.map index 622732edb447..42a3b757d513 100644 --- a/lib/libgcc_s/Version.map +++ b/lib/libgcc_s/Version.map @@ -126,6 +126,12 @@ GCC_3.4.4 { __subvti3; } GCC_3.4.2; +GCC_3.5 { + __aeabi_unwind_cpp_pr0; + __aeabi_unwind_cpp_pr1; + __aeabi_unwind_cpp_pr2; +}; + GCC_4.0.0 { __divdc3; __divsc3; Referenced Bugs: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233094 [Bug 233094] [meta] Base system tool chain modernization tracking -- You are receiving this mail because: You are the assignee for the bug.help
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