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nvptx, libgcc: Stub unwinding implementation

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Adding stub '_Unwind_Backtrace', '_Unwind_GetIPInfo' functions is necessary
for linking libbacktrace, as a normal (non-'LIBGFOR_MINIMAL') configuration
of libgfortran wants to do, for example.

The file 'libgcc/config/nvptx/unwind-nvptx.c' is copied from
'libgcc/config/gcn/unwind-gcn.c'.

libgcc/ChangeLog:

	* config/nvptx/t-nvptx: Add unwind-nvptx.c.
	* config/nvptx/unwind-nvptx.c: New file.

Co-authored-by: Andrew Stubbs <ams@gcc.gnu.org>
This commit is contained in:
Thomas Schwinge 2024-06-05 13:11:04 +02:00
parent 5bbe5350a0
commit a29c5852a6
2 changed files with 39 additions and 1 deletions
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3
libgcc/config/nvptx/t-nvptx
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@ -1,6 +1,7 @@
LIB2ADD=$(srcdir)/config/nvptx/reduction.c \
$(srcdir)/config/nvptx/mgomp.c \
$(srcdir)/config/nvptx/atomic.c
$(srcdir)/config/nvptx/atomic.c \
$(srcdir)/config/nvptx/unwind-nvptx.c
# Until we have libstdc++-v3/libsupc++ proper.
LIB2ADD += $(srcdir)/c++-minimal/guard.c

37
libgcc/config/nvptx/unwind-nvptx.c Normal file
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@ -0,0 +1,37 @@
/* Stub unwinding implementation.
Copyright (C) 2019-2024 Free Software Foundation, Inc.
Contributed by Mentor Graphics
This file is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "unwind.h"
_Unwind_Reason_Code
_Unwind_Backtrace(_Unwind_Trace_Fn trace, void * trace_argument)
{
return 0;
}
_Unwind_Ptr
_Unwind_GetIPInfo (struct _Unwind_Context *c, int *ip_before_insn)
{
return 0;
}