https://gcc.gnu.org/g:ae9cb9fc18992c8c505d46c28b3c493ac7d7fbde
commit ae9cb9fc18992c8c505d46c28b3c493ac7d7fbde
Author: Thomas Schwinge <tschwi...@baylibre.com>
Date: Tue Mar 18 10:10:30 2025 +0100
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.
(cherry picked from commit 54ab0f6785c006ddff056dab9c0240cddae82020)
Diff:
---
libgcc/ChangeLog.omp | 8 ++++++++
libgcc/config/gcn/unwind-gcn.c | 14 ++++++++++++++
libgcc/config/nvptx/unwind-nvptx.c | 14 ++++++++++++++
3 files changed, 36 insertions(+)
diff --git a/libgcc/ChangeLog.omp b/libgcc/ChangeLog.omp
index 2683de6b8249..c4efc083b53d 100644
--- a/libgcc/ChangeLog.omp
+++ b/libgcc/ChangeLog.omp
@@ -3,6 +3,14 @@
Backported from trunk:
2025-04-08 Thomas Schwinge <tschwi...@baylibre.com>
+ * config/gcn/unwind-gcn.c (_Unwind_RaiseException)
+ (_Unwind_Resume_or_Rethrow): New.
+ * config/nvptx/unwind-nvptx.c (_Unwind_RaiseException)
+ (_Unwind_Resume_or_Rethrow): Likewise.
+
+ Backported from trunk:
+ 2025-04-08 Thomas Schwinge <tschwi...@baylibre.com>
+
* config/gcn/unwind-gcn.c (_Unwind_DeleteException): New.
* config/nvptx/unwind-nvptx.c (_Unwind_DeleteException): Likewise.
diff --git a/libgcc/config/gcn/unwind-gcn.c b/libgcc/config/gcn/unwind-gcn.c
index 2ee389b19533..d229417866fa 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 2ee389b19533..d229417866fa 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)
{
