Support for ELF Visibility
Emission for globals, using the correct data sections
Function alignment can be computed for each target using TargetELFWriterInfo
Some small fixes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73201 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ELFCodeEmitter.cpp b/lib/CodeGen/ELFCodeEmitter.cpp
index c7bd873..780ec57 100644
--- a/lib/CodeGen/ELFCodeEmitter.cpp
+++ b/lib/CodeGen/ELFCodeEmitter.cpp
@@ -15,7 +15,6 @@
#include "llvm/Function.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
-#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/Debug.h"
@@ -28,27 +27,21 @@
/// startFunction - This callback is invoked when a new machine function is
/// about to be emitted.
void ELFCodeEmitter::startFunction(MachineFunction &MF) {
- const TargetData *TD = TM.getTargetData();
- const Function *F = MF.getFunction();
-
- // Align the output buffer to the appropriate alignment, power of 2.
- unsigned FnAlign = F->getAlignment();
- unsigned TDAlign = TD->getPrefTypeAlignment(F->getType());
- unsigned Align = std::max(FnAlign, TDAlign);
- assert(!(Align & (Align-1)) && "Alignment is not a power of two!");
-
// Get the ELF Section that this function belongs in.
ES = &EW.getTextSection();
+ DOUT << "processing function: " << MF.getFunction()->getName() << "\n";
+
// FIXME: better memory management, this will be replaced by BinaryObjects
ES->SectionData.reserve(4096);
BufferBegin = &ES->SectionData[0];
BufferEnd = BufferBegin + ES->SectionData.capacity();
- // Upgrade the section alignment if required.
+ // Align the output buffer with function alignment, and
+ // upgrade the section alignment if required
+ unsigned Align =
+ TM.getELFWriterInfo()->getFunctionAlignment(MF.getFunction());
if (ES->Align < Align) ES->Align = Align;
-
- // Round the size up to the correct alignment for starting the new function.
ES->Size = (ES->Size + (Align-1)) & (-Align);
// Snaity check on allocated space for text section