1 // Copyright (c) 2012, Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
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7 //
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9 // notice, this list of conditions and the following disclaimer.
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11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
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15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
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29
30 #ifndef COMMON_LINUX_ELFUTILS_INL_H__
31 #define COMMON_LINUX_ELFUTILS_INL_H__
32
33 #include "common/linux/linux_libc_support.h"
34 #include "elfutils.h"
35
36 namespace google_breakpad {
37
38 template<typename ElfClass, typename T>
GetOffset(const typename ElfClass::Ehdr * elf_header,typename ElfClass::Off offset)39 const T* GetOffset(const typename ElfClass::Ehdr* elf_header,
40 typename ElfClass::Off offset) {
41 return reinterpret_cast<const T*>(reinterpret_cast<uintptr_t>(elf_header) +
42 offset);
43 }
44
45 template<typename ElfClass>
FindElfSectionByName(const char * name,typename ElfClass::Word section_type,const typename ElfClass::Shdr * sections,const char * section_names,const char * names_end,int nsection)46 const typename ElfClass::Shdr* FindElfSectionByName(
47 const char* name,
48 typename ElfClass::Word section_type,
49 const typename ElfClass::Shdr* sections,
50 const char* section_names,
51 const char* names_end,
52 int nsection) {
53 assert(name != NULL);
54 assert(sections != NULL);
55 assert(nsection > 0);
56
57 int name_len = my_strlen(name);
58 if (name_len == 0)
59 return NULL;
60
61 for (int i = 0; i < nsection; ++i) {
62 const char* section_name = section_names + sections[i].sh_name;
63 if (sections[i].sh_type == section_type &&
64 names_end - section_name >= name_len + 1 &&
65 my_strcmp(name, section_name) == 0) {
66 return sections + i;
67 }
68 }
69 return NULL;
70 }
71
72 } // namespace google_breakpad
73
74 #endif // COMMON_LINUX_ELFUTILS_INL_H__
75