1 // Copyright 2012 Google LLC
2 //
3 // Redistribution and use in source and binary forms, with or without
4 // modification, are permitted provided that the following conditions are
5 // met:
6 //
7 // * Redistributions of source code must retain the above copyright
8 // notice, this list of conditions and the following disclaimer.
9 // * Redistributions in binary form must reproduce the above
10 // copyright notice, this list of conditions and the following disclaimer
11 // in the documentation and/or other materials provided with the
12 // distribution.
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14 // contributors may be used to endorse or promote products derived from
15 // this software without specific prior written permission.
16 //
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29 #ifndef COMMON_LINUX_ELFUTILS_INL_H__
30 #define COMMON_LINUX_ELFUTILS_INL_H__
31
32 #include "common/linux/linux_libc_support.h"
33 #include "elfutils.h"
34
35 namespace google_breakpad {
36
37 template<typename ElfClass, typename T>
GetOffset(const typename ElfClass::Ehdr * elf_header,typename ElfClass::Off offset)38 const T* GetOffset(const typename ElfClass::Ehdr* elf_header,
39 typename ElfClass::Off offset) {
40 return reinterpret_cast<const T*>(reinterpret_cast<uintptr_t>(elf_header) +
41 offset);
42 }
43
44 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)45 const typename ElfClass::Shdr* FindElfSectionByName(
46 const char* name,
47 typename ElfClass::Word section_type,
48 const typename ElfClass::Shdr* sections,
49 const char* section_names,
50 const char* names_end,
51 int nsection) {
52 assert(name != NULL);
53 assert(sections != NULL);
54 assert(nsection > 0);
55
56 int name_len = my_strlen(name);
57 if (name_len == 0)
58 return NULL;
59
60 for (int i = 0; i < nsection; ++i) {
61 const char* section_name = section_names + sections[i].sh_name;
62 if (sections[i].sh_type == section_type &&
63 names_end - section_name >= name_len + 1 &&
64 my_strcmp(name, section_name) == 0) {
65 return sections + i;
66 }
67 }
68 return NULL;
69 }
70
71 } // namespace google_breakpad
72
73 #endif // COMMON_LINUX_ELFUTILS_INL_H__
74