From 54ab0f6785c006ddff056dab9c0240cddae82020 Mon Sep 17 00:00:00 2001 From: Thomas Schwinge Date: Tue, 18 Mar 2025 10:10:30 +0100 Subject: [PATCH] GCN, nvptx: Define '_Unwind_RaiseException', '_Unwind_Resume_or_Rethrow' This resolves GCN: ld: error: undefined symbol: _Unwind_RaiseException >>> referenced by eh_throw.cc:93 ([...]/source-gcc/libstdc++-v3/libsupc++/eh_throw.cc:93) >>> eh_throw.o:(__cxa_throw) in archive /srv/data/tschwinge/amd-instinct2/gcc/build/submit-light-target_gcn/build-gcc/amdgcn-amdhsa/gfx908/libstdc++-v3/src/.libs/libstdc++.a [...] collect2: error: ld returned 1 exit status ..., and/or: ld: error: undefined symbol: _Unwind_Resume_or_Rethrow >>> referenced by eh_throw.cc:129 ([...]/source-gcc/libstdc++-v3/libsupc++/eh_throw.cc:129) >>> eh_throw.o:(__cxa_rethrow) in archive /srv/data/tschwinge/amd-instinct2/gcc/build/submit-light-target_gcn/build-gcc/amdgcn-amdhsa/gfx908/libstdc++-v3/src/.libs/libstdc++.a [...] collect2: error: ld returned 1 exit status ..., and nvptx: unresolved symbol _Unwind_RaiseException collect2: error: ld returned 1 exit status ..., or: unresolved symbol _Unwind_Resume_or_Rethrow collect2: error: ld returned 1 exit status For both GCN, nvptx, this each progresses ~25 'check-gcc-c++', and ~10 'check-target-libstdc++-v3' test cases: [-FAIL:-]{+PASS:+} [...] (test for excess errors) ..., with (if applicable, for most of them): [-UNRESOLVED:-]{+PASS:+} [...] [-compilation failed to produce executable-]{+execution test+} ..., or some 'FAIL: [...] execution test' where these test cases now FAIL when attempting to use these interfaces, or, if applicable, FAIL due to run-time 'GCC/nvptx: sorry, unimplemented: dynamic stack allocation not supported'. libgcc/ * config/gcn/unwind-gcn.c (_Unwind_RaiseException) (_Unwind_Resume_or_Rethrow): New. * config/nvptx/unwind-nvptx.c (_Unwind_RaiseException) (_Unwind_Resume_or_Rethrow): Likewise. --- libgcc/config/gcn/unwind-gcn.c | 14 ++++++++++++++ libgcc/config/nvptx/unwind-nvptx.c | 14 ++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/libgcc/config/gcn/unwind-gcn.c b/libgcc/config/gcn/unwind-gcn.c index e014cc08243..eae741c55bb 100644 --- a/libgcc/config/gcn/unwind-gcn.c +++ b/libgcc/config/gcn/unwind-gcn.c @@ -24,6 +24,13 @@ #include "unwind.h" +_Unwind_Reason_Code +_Unwind_RaiseException(struct _Unwind_Exception *exc __attribute__ ((__unused__))) +{ + __builtin_abort (); + return 0; +} + void _Unwind_DeleteException (struct _Unwind_Exception *exc) { @@ -31,6 +38,13 @@ _Unwind_DeleteException (struct _Unwind_Exception *exc) (*exc->exception_cleanup) (_URC_FOREIGN_EXCEPTION_CAUGHT, exc); } +_Unwind_Reason_Code +_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *exc __attribute__ ((__unused__))) +{ + __builtin_abort (); + return 0; +} + _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn trace, void * trace_argument) { diff --git a/libgcc/config/nvptx/unwind-nvptx.c b/libgcc/config/nvptx/unwind-nvptx.c index e014cc08243..eae741c55bb 100644 --- a/libgcc/config/nvptx/unwind-nvptx.c +++ b/libgcc/config/nvptx/unwind-nvptx.c @@ -24,6 +24,13 @@ #include "unwind.h" +_Unwind_Reason_Code +_Unwind_RaiseException(struct _Unwind_Exception *exc __attribute__ ((__unused__))) +{ + __builtin_abort (); + return 0; +} + void _Unwind_DeleteException (struct _Unwind_Exception *exc) { @@ -31,6 +38,13 @@ _Unwind_DeleteException (struct _Unwind_Exception *exc) (*exc->exception_cleanup) (_URC_FOREIGN_EXCEPTION_CAUGHT, exc); } +_Unwind_Reason_Code +_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *exc __attribute__ ((__unused__))) +{ + __builtin_abort (); + return 0; +} + _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn trace, void * trace_argument) {