6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-17 20:23:59 +00:00
Code Issues Projects Releases Wiki Activity

ExecutionEngine: Preliminary support for dynamically loadable coff objects

Browse Source 
Provide basic support for dynamically loadable coff objects. Only handles a subset of x64 currently.

Patch by Andy Ayers!

Differential Revision: http://reviews.llvm.org/D7793

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231574 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer
2015-03-07 20:21:27 +00:00
parent ed0266d8ee
commit 2c08439cf9
10 changed files with 475 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
lib/Object/COFFObjectFile.cpp
View File

@ -190,7 +190,9 @@ std::error_code COFFObjectFile::getSymbolType(DataRefImpl Ref,
Result = SymbolRef::ST_Data;
} else if (Symb.isFileRecord()) {
Result = SymbolRef::ST_File;
} else if (SectionNumber == COFF::IMAGE_SYM_DEBUG) {
} else if (SectionNumber == COFF::IMAGE_SYM_DEBUG ||
Symb.isSectionDefinition()) {
// TODO: perhaps we need a new symbol type ST_Section.
Result = SymbolRef::ST_Debug;
} else if (!COFF::isReservedSectionNumber(SectionNumber)) {
const coff_section *Section = nullptr;
@ -359,12 +361,17 @@ bool COFFObjectFile::isSectionData(DataRefImpl Ref) const {
bool COFFObjectFile::isSectionBSS(DataRefImpl Ref) const {
const coff_section *Sec = toSec(Ref);
return Sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
const uint32_t BssFlags = COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE;
return (Sec->Characteristics & BssFlags) == BssFlags;
}
bool COFFObjectFile::isSectionVirtual(DataRefImpl Ref) const {
const coff_section *Sec = toSec(Ref);
return Sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
// In COFF, a virtual section won't have any in-file
// content, so the file pointer to the content will be zero.
return Sec->PointerToRawData == 0;
}
bool COFFObjectFile::sectionContainsSymbol(DataRefImpl SecRef,