64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
/*
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* Copyright (c) 2020 Huawei Technologies Co.,Ltd.
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*
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* openGauss is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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*
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* http://license.coscl.org.cn/MulanPSL2
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*
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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* ---------------------------------------------------------------------------------------
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*
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* fatal_err.h
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*
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* IDENTIFICATION
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* src/include/utils/fatal_err.h
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*
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* ---------------------------------------------------------------------------------------
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*/
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#ifndef ELF_PARSER_H
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#define ELF_PARSER_H
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#include <elf.h>
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#define SYMHDR_NUM 2
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/*
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* It is an elf parser, which can lookup the function symbol that is the nearest
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* to the given address.
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*/
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class elf_parser {
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public:
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elf_parser();
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~elf_parser();
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bool reset(const char *filename);
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bool is_same_file(const char *filename);
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bool resolve_addr(uintptr_t addr, char *buf, size_t len, uint *offset);
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inline bool isdyn()
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{
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return dyn;
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}
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private:
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const char *fname; /* file name */
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int fd;
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Elf64_Ehdr ehdr; /* elf header */
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Elf64_Shdr symhdr[SYMHDR_NUM]; /* there are at most two symbol tables in an elf file */
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int sym_count; /* number of symbol tables found */
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bool dyn; /* wether a shared object file is opened */
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void init();
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bool load(const char *name);
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bool match_symbol(uintptr_t addr, uint *strtab_idx, uint *pos, uint *offset);
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bool string_at(uint strtab_idx, uint pos, char *buf, size_t len);
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};
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#endif
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