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Object: make the following changes into SymbolRef

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- Add enum SymbolType and function getSymbolType()
- Add function isGlobal() - it's returns true for symbols that can be used in another objects, such as library functions.
- Rename function getAddress() to getOffset() and add new function getAddress(), because currently getAddress() returns section offset of symbol first byte. new getAddress() return symbol address.
- Change usage SymbolRef::getAddress() to getOffset() in tools/llvm-nm and tools/llvm-objdump.

Patch by Danil Malyshev!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139683 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2011-09-14 01:22:52 +00:00
parent 357b571841
commit ac241fe9f0
7 changed files with 225 additions and 5 deletions
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51
lib/Object/COFFObjectFile.cpp
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@ -114,7 +114,7 @@ error_code COFFObjectFile::getSymbolNext(DataRefImpl Symb,
return object_error::success;
}
error_code COFFObjectFile::getSymbolAddress(DataRefImpl Symb,
error_code COFFObjectFile::getSymbolOffset(DataRefImpl Symb,
uint64_t &Result) const {
const coff_symbol *symb = toSymb(Symb);
const coff_section *Section = NULL;
@ -132,6 +132,55 @@ error_code COFFObjectFile::getSymbolAddress(DataRefImpl Symb,
return object_error::success;
}
error_code COFFObjectFile::getSymbolAddress(DataRefImpl Symb,
uint64_t &Result) const {
const coff_symbol *symb = toSymb(Symb);
const coff_section *Section = NULL;
if (error_code ec = getSection(symb->SectionNumber, Section))
return ec;
char Type;
if (error_code ec = getSymbolNMTypeChar(Symb, Type))
return ec;
if (Type == 'U' || Type == 'w')
Result = UnknownAddressOrSize;
else if (Section)
Result = reinterpret_cast<uintptr_t>(base() +
Section->PointerToRawData +
symb->Value);
else
Result = reinterpret_cast<uintptr_t>(base() + symb->Value);
return object_error::success;
}
error_code COFFObjectFile::getSymbolType(DataRefImpl Symb,
SymbolRef::SymbolType &Result) const {
const coff_symbol *symb = toSymb(Symb);
Result = SymbolRef::ST_Other;
if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED) {
Result = SymbolRef::ST_External;
} else {
if (symb->Type.ComplexType == COFF::IMAGE_SYM_DTYPE_FUNCTION) {
Result = SymbolRef::ST_Function;
} else {
char Type;
if (error_code ec = getSymbolNMTypeChar(Symb, Type))
return ec;
if (Type == 'r' || Type == 'R') {
Result = SymbolRef::ST_Data;
}
}
}
return object_error::success;
}
error_code COFFObjectFile::isSymbolGlobal(DataRefImpl Symb,
bool &Result) const {
const coff_symbol *symb = toSymb(Symb);
Result = (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL);
return object_error::success;
}
error_code COFFObjectFile::getSymbolSize(DataRefImpl Symb,
uint64_t &Result) const {
// FIXME: Return the correct size. This requires looking at all the symbols