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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup rtems_rtld
*
* @brief RTEMS Run-Time Link Editor
*
* This is the RTL implementation.
*/
/*
* COPYRIGHT (c) 2012-2016, 2018 Chris Johns <chrisj@rtems.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <stdio.h>
#include <rtems/rtl/rtl.h>
#include "rtl-elf.h"
#include "rtl-error.h"
#include "rtl-unwind.h"
#include "rtl-unwind-dw2.h"
/*
* These interfaces are not exported outside the GCC source.
*/
void __register_frame (void *begin);
void __deregister_frame (void *begin);
bool
rtems_rtl_elf_unwind_dw2_parse (const rtems_rtl_obj* obj,
const char* name,
uint32_t flags)
{
return
((flags & RTEMS_RTL_OBJ_SECT_CONST) != 0) &&
((strcmp(name, ".eh_frame") == 0) ||
(strncmp(name, ".gcc_except_table.", sizeof (".gcc_except_table.") - 1) == 0));
}
bool
rtems_rtl_elf_unwind_dw2_register (const rtems_rtl_obj* obj)
{
rtems_rtl_obj_sect* sect = rtems_rtl_obj_find_section (obj, ".eh_frame");
if (sect != NULL && sect->size > 0 && sect->base != NULL)
{
__register_frame (sect->base);
}
return true;
}
bool rtems_rtl_elf_unwind_dw2_deregister (const rtems_rtl_obj* obj)
{
rtems_rtl_obj_sect* sect = rtems_rtl_obj_find_section (obj, ".eh_frame");
if (sect != NULL && sect->size > 0 && sect->base != NULL)
{
__deregister_frame (sect->base);
}
return true;
}
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