6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-17 04:24:00 +00:00
Code Issues Projects Releases Wiki Activity

Debug Info: Implement DwarfUnit::addRegisterOffset using DwarfExpression.

Browse Source 
No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225707 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl
2015-01-12 22:19:26 +00:00
parent f89325d832
commit 93eb099f24
5 changed files with 60 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
lib/CodeGen/AsmPrinter/DwarfUnit.cpp
View File

@ -16,6 +16,7 @@
#include "DwarfAccelTable.h"
#include "DwarfCompileUnit.h"
#include "DwarfDebug.h"
#include "DwarfExpression.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DIBuilder.h"
@ -43,6 +44,35 @@ GenerateDwarfTypeUnits("generate-type-units", cl::Hidden,
cl::desc("Generate DWARF4 type units."),
cl::init(false));
/// DwarfExpression implementation for DwarfUnit.
class DIEDwarfExpression : public DwarfExpression {
DwarfUnit &DU;
DIELoc ¨
public:
DIEDwarfExpression(TargetMachine &TM, DwarfUnit &DU, DIELoc &DIE)
: DwarfExpression(TM), DU(DU), DIE(DIE) {}
void EmitOp(uint8_t Op, const char* Comment = nullptr) override;
void EmitSigned(int Value) override;
void EmitUnsigned(unsigned Value) override;
unsigned getFrameRegister() override;
};
void DIEDwarfExpression::EmitOp(uint8_t Op, const char* Comment) {
DU.addUInt(DIE, dwarf::DW_FORM_data1, Op);
}
void DIEDwarfExpression::EmitSigned(int Value) {
DU.addSInt(DIE, dwarf::DW_FORM_sdata, Value);
}
void DIEDwarfExpression::EmitUnsigned(unsigned Value) {
DU.addUInt(DIE, dwarf::DW_FORM_udata, Value);
}
unsigned DIEDwarfExpression::getFrameRegister() {
const TargetRegisterInfo *TRI = TM.getSubtargetImpl()->getRegisterInfo();
return TRI->getFrameRegister(*DU.getAsmPrinter()->MF);
}
/// Unit - Unit constructor.
DwarfUnit::DwarfUnit(unsigned UID, dwarf::Tag UnitTag, DICompileUnit Node,
AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU)
@ -463,22 +493,8 @@ bool DwarfUnit::addRegisterOpPiece(DIELoc &TheDie, unsigned Reg,
/// addRegisterOffset - Add register offset.
bool DwarfUnit::addRegisterOffset(DIELoc &TheDie, unsigned Reg,
int64_t Offset) {
const TargetRegisterInfo *TRI = Asm->TM.getSubtargetImpl()->getRegisterInfo();
int DWReg = TRI->getDwarfRegNum(Reg, false);
if (DWReg < 0)
return false;
if (Reg == TRI->getFrameRegister(*Asm->MF))
// If variable offset is based in frame register then use fbreg.
addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_fbreg);
else if (DWReg < 32)
addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_breg0 + DWReg);
else {
addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_bregx);
addUInt(TheDie, dwarf::DW_FORM_udata, DWReg);
}
addSInt(TheDie, dwarf::DW_FORM_sdata, Offset);
return true;
DIEDwarfExpression Expr(Asm->TM, *this, TheDie);
return Expr.AddMachineRegIndirect(Reg, Offset);
}
/* Byref variables, in Blocks, are declared by the programmer as "SomeType