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| author | hiddenpath <hiddenpath@yandex-team.com> | 2024-08-16 12:39:38 +0300 |
|---|---|---|
| committer | hiddenpath <hiddenpath@yandex-team.com> | 2024-08-16 13:01:58 +0300 |
| commit | 473cc991b37246f10c13264c6748bec3e9cdf6ec (patch) | |
| tree | 82e6c86bc47fb5d030e0f3a53f3a3cf7c2f14260 /tools/fix_elf/patch.h | |
| parent | dce4683599aea495a9a88b83a3aa1c752fab08bf (diff) | |
| download | ydb-473cc991b37246f10c13264c6748bec3e9cdf6ec.tar.gz | |
Remove fix-elf from ymake.core.conf
bd2fb0cb2bbfb52feae17c48694ca01ef959bb8f
Diffstat (limited to 'tools/fix_elf/patch.h')
| -rw-r--r-- | tools/fix_elf/patch.h | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/tools/fix_elf/patch.h b/tools/fix_elf/patch.h deleted file mode 100644 index c3dcd24224..0000000000 --- a/tools/fix_elf/patch.h +++ /dev/null @@ -1,175 +0,0 @@ -#pragma once - -#include "elf.h" - -#include <util/generic/string.h> -#include <util/stream/file.h> -#include <util/system/filemap.h> - -namespace NElf { - -template<typename TTo, typename TFrom> -inline TTo Offset(TFrom from, size_t off) { - return reinterpret_cast<TTo>(reinterpret_cast<char*>(from) + off); -} - -bool IsElf(const TString& path); - -class TElf { -public: - TElf(const TString& path) - : Map(path, TFileMap::oRdWr) - { - Map.Map(0, Map.Length()); - Begin = reinterpret_cast<char*>(Map.Ptr()); - - if (Map.Length() < static_cast<i64>(sizeof(Elf64_Ehdr)) || TStringBuf(Begin, SELFMAG) != ELFMAG) { - ythrow yexception() << path << " is not an ELF file"; - } - } - - Elf64_Ehdr* GetHeader() const noexcept { - return reinterpret_cast<Elf64_Ehdr*>(Begin); - } - - char* GetPtr(size_t offset = 0) const noexcept { - return Begin + offset; - } - - Elf64_Shdr* GetSectionByType(Elf64_Word type) const { - Elf64_Shdr* r = nullptr; - - for (Elf64_Shdr* p = GetSectionBegin(), *end = GetSectionEnd(); p != end; ++p) { - if (p->sh_type == type) { - if (r) { - ythrow yexception() << "More than one section of type " << type << Endl; - } - - r = p; - } - } - - return r; - } - - size_t GetSectionCount() const noexcept { - size_t count = GetHeader()->e_shnum; - if (count == 0) { - count = GetSection(0)->sh_size; - } - - return count; - } - - Elf64_Shdr* GetSectionBegin() const noexcept { - return reinterpret_cast<Elf64_Shdr*>(Begin + GetHeader()->e_shoff); - } - - Elf64_Shdr* GetSectionEnd() const noexcept { - return reinterpret_cast<Elf64_Shdr*>(Begin + GetHeader()->e_shoff) + GetSectionCount(); - } - - Elf64_Shdr* GetSection(size_t i) const noexcept { - return GetSectionBegin() + i; - } - - Elf64_Shdr* GetSectionsNameSection() const noexcept { - size_t index = GetHeader()->e_shstrndx; - if (index == SHN_XINDEX) { - index = GetSection(0)->sh_link; - } - return GetSection(index); - } - -private: - TFileMap Map; - char* Begin; -}; - -class TSection { -public: - TSection(TElf* elf, Elf64_Shdr* this_) - : Elf(elf) - , This(this_) - { - } - - bool IsNull() const noexcept { - return !This; - } - - char* GetPtr(size_t offset = 0) const noexcept { - return Elf->GetPtr(This->sh_offset) + offset; - } - - TStringBuf GetStr(size_t offset) const noexcept { - return GetPtr(offset); - } - - TStringBuf GetName() const noexcept { - return TSection{Elf, Elf->GetSectionsNameSection()}.GetPtr(This->sh_name); - } - - size_t GetLink() const noexcept { - return This->sh_link; - } - - size_t GetSize() const noexcept { - return This->sh_size; - } - - size_t GetEntryCount() const noexcept { - return GetSize() / This->sh_entsize; - } - - template<typename TTo = char> - TTo* GetEntry(size_t i) const noexcept { - return reinterpret_cast<TTo*>(GetPtr(i * This->sh_entsize)); - } - -private: - TElf* Elf; - Elf64_Shdr* This; -}; - -class TVerneedSection : public TSection { -public: - TVerneedSection(TElf* elf) - : TSection(elf, elf->GetSectionByType(SHT_GNU_verneed)) - { - } - - Elf64_Verneed* GetFirstVerneed() const noexcept { - if (!GetSize()) { - return nullptr; - } - - return reinterpret_cast<Elf64_Verneed*>(GetPtr()); - } - - Elf64_Verneed* GetNextVerneed(Elf64_Verneed* v) const noexcept { - if (!v->vn_next) { - return nullptr; - } - - return Offset<Elf64_Verneed*>(v, v->vn_next); - } - - Elf64_Vernaux* GetFirstVernaux(Elf64_Verneed* v) const noexcept { - if (!v->vn_cnt) { - return nullptr; - } - - return Offset<Elf64_Vernaux*>(v, v->vn_aux); - } - - Elf64_Vernaux* GetNextVernaux(Elf64_Vernaux* v) const noexcept { - if (!v->vna_next) { - return nullptr; - } - - return Offset<Elf64_Vernaux*>(v, v->vna_next); - } -}; - -} |