6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-09-25 17:20:48 +00:00
Code Issues Projects Releases Wiki Activity

MC/Mach-O: Implement support for setting indirect symbol table offset in section header.

Browse Source 
Also, create symbol data for LHS of assignment, to match 'as' symbol ordering better.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104033 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar
2010-05-18 17:28:24 +00:00
parent 56279f42b6
commit 2ae4bfd769
3 changed files with 203 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
lib/MC/MachObjectWriter.cpp
View File

@@ -185,6 +185,7 @@ class MachObjectWriterImpl {
llvm::DenseMap<const MCSectionData*,
std::vector<MachRelocationEntry> > Relocations;
llvm::DenseMap<const MCSectionData*, unsigned> IndirectSymBase;
/// @}
/// @name Symbol Table Data
@@ -325,7 +326,7 @@ public:
Write32(NumRelocations ? RelocationsStart : 0);
Write32(NumRelocations);
Write32(Flags);
Write32(0); // reserved1
Write32(IndirectSymBase.lookup(&SD)); // reserved1
Write32(Section.getStubSize()); // reserved2
if (Is64Bit)
Write32(0); // reserved3
@@ -815,20 +816,26 @@ public:
// FIXME: Revisit this when the dust settles.
// Bind non lazy symbol pointers first.
unsigned IndirectIndex = 0;
for (MCAssembler::indirect_symbol_iterator it = Asm.indirect_symbol_begin(),
ie = Asm.indirect_symbol_end(); it != ie; ++it) {
ie = Asm.indirect_symbol_end(); it != ie; ++it, ++IndirectIndex) {
const MCSectionMachO &Section =
cast<MCSectionMachO>(it->SectionData->getSection());
if (Section.getType() != MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS)
continue;
// Initialize the section indirect symbol base, if necessary.
if (!IndirectSymBase.count(it->SectionData))
IndirectSymBase[it->SectionData] = IndirectIndex;
Asm.getOrCreateSymbolData(*it->Symbol);
}
// Then lazy symbol pointers and symbol stubs.
IndirectIndex = 0;
for (MCAssembler::indirect_symbol_iterator it = Asm.indirect_symbol_begin(),
ie = Asm.indirect_symbol_end(); it != ie; ++it) {
ie = Asm.indirect_symbol_end(); it != ie; ++it, ++IndirectIndex) {
const MCSectionMachO &Section =
cast<MCSectionMachO>(it->SectionData->getSection());
@@ -836,6 +843,10 @@ public:
Section.getType() != MCSectionMachO::S_SYMBOL_STUBS)
continue;
// Initialize the section indirect symbol base, if necessary.
if (!IndirectSymBase.count(it->SectionData))
IndirectSymBase[it->SectionData] = IndirectIndex;
// Set the symbol type to undefined lazy, but only on construction.
//
// FIXME: Do not hardcode.