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/*
* COPYRIGHT (c) 2016, 2018 Chris Johns <chrisj@rtems.org>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
/**
* @file
*
* @ingroup rtems_rtl
*
* @brief RTEMS Run-Time Linker Unwind DWARF Support.
*/
#if !defined (_RTEMS_RTL_UNWIND_DW2_H_)
#define _RTEMS_RTL_UNWIND_DW2_H_
#include "rtl-elf.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#if __SIZEOF_LONG__ >= __SIZEOF_POINTER__
typedef long rtems_rtl_elf_unwind_dw2_sleb128;
typedef unsigned long rtems_rtl_elf_unwind_dw2_uleb128;
#elif __SIZEOF_LONG_LONG__ >= __SIZEOF_POINTER__
typedef long long rtems_rtl_elf_unwind_dw2_sleb128;
typedef unsigned long long rtems_rtl_elf_unwind_dw2_uleb128;
#else
#error No DW2 type available.
#endif
/**
* Architecture specific handler to check if a section contains exception
* handler data..
*
* @param obj The object file.
* @param name The section's name.
* @param uint32 flags The object file's flags.
* @retval true The section contains unwind information.
* @retval false The section does not contain unwind information.
*/
bool rtems_rtl_elf_unwind_dw2_parse (const rtems_rtl_obj* obj,
const char* name,
uint32_t flags);
/**
* Architecture specific handler to add an object file's unwind information to
* the base image.
*
* @param obj The object file.
* @retval true The unwind information has been registered.
* @retval false The unwind information could not be registered.
*/
bool rtems_rtl_elf_unwind_dw2_register (const rtems_rtl_obj* obj);
/**
* Architecture specific handler to remove an object file's unwind information
* from the base image.
*
* @param obj The object file.
* @retval true The unwind information has been deregistered.
* @retval false The unwind information could not be deregistered.
*/
bool rtems_rtl_elf_unwind_dw2_deregister (const rtems_rtl_obj* obj);
/**
* Read signed and unsigned LEB128 values.
*/
const uint8_t* rtems_rtl_elf_unwind_dw2_read_uleb128 (const uint8_t* data,
rtems_rtl_elf_unwind_dw2_uleb128* val);
const uint8_t* rtems_rtl_elf_unwind_dw2_read_sleb128 (const uint8_t* data,
rtems_rtl_elf_unwind_dw2_sleb128* val);
bool rtems_rtl_elf_unwind_dw2_relocate (const Elf_Addr* where, Elf_Word value, Elf_Word mask);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif
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