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authorMichael J. Spencer <bigcheesegs@gmail.com>2011-10-17 23:54:46 +0000
committerMichael J. Spencer <bigcheesegs@gmail.com>2011-10-17 23:54:46 +0000
commit9b2b812fea4df160437e7b7d56e38f6335189ad0 (patch)
treeaa3bfb402beebb9c71d8a7a64fb253eccdf0a8ac /lib/Object
parentc38c36a8c44bd32bdfc2e48ab3e447f6dc1547bd (diff)
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Object: Add isSymbolAbsolute and getSymbolSection.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142317 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Object')
-rw-r--r--lib/Object/COFFObjectFile.cpp22
-rw-r--r--lib/Object/ELFObjectFile.cpp29
-rw-r--r--lib/Object/MachOObjectFile.cpp37
3 files changed, 88 insertions, 0 deletions
diff --git a/lib/Object/COFFObjectFile.cpp b/lib/Object/COFFObjectFile.cpp
index 0859bca..1335652 100644
--- a/lib/Object/COFFObjectFile.cpp
+++ b/lib/Object/COFFObjectFile.cpp
@@ -268,6 +268,28 @@ error_code COFFObjectFile::isSymbolInternal(DataRefImpl Symb,
return object_error::success;
}
+error_code COFFObjectFile::isSymbolAbsolute(DataRefImpl Symb,
+ bool &Result) const {
+ const coff_symbol *symb = toSymb(Symb);
+ Result = symb->SectionNumber == COFF::IMAGE_SYM_ABSOLUTE;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getSymbolSection(DataRefImpl Symb,
+ section_iterator &Result) const {
+ const coff_symbol *symb = toSymb(Symb);
+ if (symb->SectionNumber <= COFF::IMAGE_SYM_UNDEFINED)
+ Result = end_sections();
+ else {
+ const coff_section *sec;
+ if (error_code ec = getSection(symb->SectionNumber, sec)) return ec;
+ DataRefImpl Sec;
+ Sec.p = reinterpret_cast<uintptr_t>(sec);
+ Result = section_iterator(SectionRef(Sec, this));
+ }
+ return object_error::success;
+}
+
error_code COFFObjectFile::getSectionNext(DataRefImpl Sec,
SectionRef &Result) const {
const coff_section *sec = toSec(Sec);
diff --git a/lib/Object/ELFObjectFile.cpp b/lib/Object/ELFObjectFile.cpp
index a3c8248..a5e3910 100644
--- a/lib/Object/ELFObjectFile.cpp
+++ b/lib/Object/ELFObjectFile.cpp
@@ -333,6 +333,9 @@ protected:
virtual error_code isSymbolGlobal(DataRefImpl Symb, bool &Res) const;
virtual error_code isSymbolWeak(DataRefImpl Symb, bool &Res) const;
virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
+ virtual error_code isSymbolAbsolute(DataRefImpl Symb, bool &Res) const;
+ virtual error_code getSymbolSection(DataRefImpl Symb,
+ section_iterator &Res) const;
virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
@@ -655,6 +658,32 @@ error_code ELFObjectFile<target_endianness, is64Bits>
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
+ ::isSymbolAbsolute(DataRefImpl Symb, bool &Res) const {
+ validateSymbol(Symb);
+ const Elf_Sym *symb = getSymbol(Symb);
+ Res = symb->st_shndx == ELF::SHN_ABS;
+ return object_error::success;
+}
+
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>
+ ::getSymbolSection(DataRefImpl Symb,
+ section_iterator &Res) const {
+ validateSymbol(Symb);
+ const Elf_Sym *symb = getSymbol(Symb);
+ const Elf_Shdr *sec = getSection(symb);
+ if (!sec)
+ Res = end_sections();
+ else {
+ DataRefImpl Sec;
+ Sec.p = reinterpret_cast<intptr_t>(sec);
+ Res = section_iterator(SectionRef(Sec, this));
+ }
+ return object_error::success;
+}
+
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>
::isSymbolInternal(DataRefImpl Symb,
bool &Result) const {
validateSymbol(Symb);
diff --git a/lib/Object/MachOObjectFile.cpp b/lib/Object/MachOObjectFile.cpp
index c757dd3..472e072 100644
--- a/lib/Object/MachOObjectFile.cpp
+++ b/lib/Object/MachOObjectFile.cpp
@@ -242,6 +242,43 @@ error_code MachOObjectFile::isSymbolWeak(DataRefImpl Symb, bool &Res) const {
return object_error::success;
}
+error_code MachOObjectFile::isSymbolAbsolute(DataRefImpl Symb, bool &Res) const{
+ uint8_t n_type;
+ if (MachOObj->is64Bit()) {
+ InMemoryStruct<macho::Symbol64TableEntry> Entry;
+ getSymbol64TableEntry(Symb, Entry);
+ n_type = Entry->Type;
+ } else {
+ InMemoryStruct<macho::SymbolTableEntry> Entry;
+ getSymbolTableEntry(Symb, Entry);
+ n_type = Entry->Type;
+ }
+
+ Res = (n_type & MachO::NlistMaskType) == MachO::NListTypeAbsolute;
+ return object_error::success;
+}
+
+error_code MachOObjectFile::getSymbolSection(DataRefImpl Symb,
+ section_iterator &Res) const {
+ uint8_t index;
+ if (MachOObj->is64Bit()) {
+ InMemoryStruct<macho::Symbol64TableEntry> Entry;
+ getSymbol64TableEntry(Symb, Entry);
+ index = Entry->SectionIndex;
+ } else {
+ InMemoryStruct<macho::SymbolTableEntry> Entry;
+ getSymbolTableEntry(Symb, Entry);
+ index = Entry->SectionIndex;
+ }
+
+ if (index == 0)
+ Res = end_sections();
+ else
+ Res = section_iterator(SectionRef(Sections[index], this));
+
+ return object_error::success;
+}
+
error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
SymbolRef::Type &Res) const {
uint8_t n_type;