54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
/*
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* \brief Support for exceptions libsupc++
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* \author Norman Feske
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* \author Sebastian Sumpf
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* \date 2006-07-21
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*/
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/*
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* Copyright (C) 2006-2012 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#include <base/printf.h>
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extern "C" char __eh_frame_start__[]; /* from linker script */
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extern "C" void __register_frame (const void *begin); /* from libgcc_eh */
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/*
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* This symbol is set by Genode's dynamic linker (ldso) during binary setup.
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* After setup, the symbol will point to the actual implementation of
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* 'dl_iterate_phdr', which is located within the linker. 'dl_iterate_phdr'
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* iterates through all (linker loaded) binaries and shared libraries. This
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* function has to be implemented in order to support C++ exceptions within
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* shared libraries.
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* Return values of dl_iterate_phdr (gcc 4.2.4):
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* < 0 = error
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* 0 = continue program header iteration
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* > 0 = stop iteration (no errors occured)
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*
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* See also: man dl_iterate_phdr
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*/
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int (*genode__dl_iterate_phdr) (int (*callback) (void *info, unsigned long size, void *data), void *data) = 0;
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extern "C" int dl_iterate_phdr(int (*callback) (void *info, unsigned long size, void *data), void *data) __attribute__((weak));
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extern "C" int dl_iterate_phdr(int (*callback) (void *info, unsigned long size, void *data), void *data)
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{
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if (!genode__dl_iterate_phdr)
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return -1;
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return genode__dl_iterate_phdr(callback, data);
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}
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extern "C" void raise()
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{
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PDBG("raise called - not implemented\n");
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}
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void init_exception_handling()
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{
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// __register_frame(__eh_frame_start__);
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}
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