RPCSX/llvm
1
0
Fork 0
mirror of https://github.com/RPCSX/llvm.git synced 2024-12-13 06:38:44 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Refactor.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102481 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2010-04-28 01:03:09 +00:00
parent 34b3d993e4
commit a43098d388
2 changed files with 87 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

127
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -812,6 +812,64 @@ void DwarfDebug::addAddress(DIE *Die, unsigned Attribute,
addBlock(Die, Attribute, 0, Block);
}
/// addRegisterAddress - Add register location entry in variable DIE.
bool DwarfDebug::addRegisterAddress(DIE *Die, DbgVariable *DV,
const MachineOperand &MO) {
assert (MO.isReg() && "Invalid machine operand!");
if (!MO.getReg())
return false;
MachineLocation Location;
Location.set(MO.getReg());
addAddress(Die, dwarf::DW_AT_location, Location);
if (MCSymbol *VS = DV->getDbgValueLabel())
addLabel(Die, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr, VS);
return true;
}
/// addConstantValue - Add constant value entry in variable DIE.
bool DwarfDebug::addConstantValue(DIE *Die, DbgVariable *DV,
const MachineOperand &MO) {
assert (MO.isImm() && "Invalid machine operand!");
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
unsigned Imm = MO.getImm();
addUInt(Block, 0, dwarf::DW_FORM_udata, Imm);
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
if (MCSymbol *VS = DV->getDbgValueLabel())
addLabel(Die, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr, VS);
return true;
}
/// addConstantFPValue - Add constant value entry in variable DIE.
bool DwarfDebug::addConstantFPValue(DIE *Die, DbgVariable *DV,
const MachineOperand &MO) {
assert (MO.isFPImm() && "Invalid machine operand!");
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
APFloat FPImm = MO.getFPImm()->getValueAPF();
// Get the raw data form of the floating point.
const APInt FltVal = FPImm.bitcastToAPInt();
const char *FltPtr = (const char*)FltVal.getRawData();
int NumBytes = FltVal.getBitWidth() / 8; // 8 bits per byte.
bool LittleEndian = Asm->getTargetData().isLittleEndian();
int Incr = (LittleEndian ? 1 : -1);
int Start = (LittleEndian ? 0 : NumBytes - 1);
int Stop = (LittleEndian ? NumBytes : -1);
// Output the constant to DWARF one byte at a time.
for (; Start != Stop; Start += Incr)
addUInt(Block, 0, dwarf::DW_FORM_data1,
(unsigned char)0xFF & FltPtr[Start]);
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
if (MCSymbol *VS = DV->getDbgValueLabel())
addLabel(Die, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr,
VS);
return true;
}
/// addToContextOwner - Add Die into the list of its context owner's children.
void DwarfDebug::addToContextOwner(DIE *Die, DIDescriptor Context) {
if (Context.isType()) {
@ -1534,56 +1592,25 @@ DIE *DwarfDebug::constructVariableDIE(DbgVariable *DV, DbgScope *Scope) {
// Add variable address.
if (!Scope->isAbstractScope()) {
// Check if variable is described by DBG_VALUE instruction.
if (const MachineInstr *DbgValueInsn = DV->getDbgValue()) {
if (DbgValueInsn->getNumOperands() == 3) {
// FIXME : Handle getNumOperands != 3
if (DbgValueInsn->getOperand(0).isReg() &&
DbgValueInsn->getOperand(0).getReg()) {
MachineLocation Location;
Location.set(DbgValueInsn->getOperand(0).getReg());
addAddress(VariableDie, dwarf::DW_AT_location, Location);
if (MCSymbol *VS = DV->getDbgValueLabel())
addLabel(VariableDie, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr,
VS);
} else if (DbgValueInsn->getOperand(0).isImm()) {
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
unsigned Imm = DbgValueInsn->getOperand(0).getImm();
addUInt(Block, 0, dwarf::DW_FORM_udata, Imm);
addBlock(VariableDie, dwarf::DW_AT_const_value, 0, Block);
if (MCSymbol *VS = DV->getDbgValueLabel())
addLabel(VariableDie, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr,
VS);
} else if (DbgValueInsn->getOperand(0).isFPImm()) {
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
APFloat FPImm = DbgValueInsn->getOperand(0).getFPImm()->getValueAPF();
// Get the raw data form of the floating point.
const APInt FltVal = FPImm.bitcastToAPInt();
const char *FltPtr = (const char*)FltVal.getRawData();
int NumBytes = FltVal.getBitWidth() / 8; // 8 bits per byte.
bool LittleEndian = Asm->getTargetData().isLittleEndian();
int Incr = (LittleEndian ? 1 : -1);
int Start = (LittleEndian ? 0 : NumBytes - 1);
int Stop = (LittleEndian ? NumBytes : -1);
// Output the constant to DWARF one byte at a time.
for (; Start != Stop; Start += Incr)
addUInt(Block, 0, dwarf::DW_FORM_data1,
(unsigned char)0xFF & FltPtr[Start]);
addBlock(VariableDie, dwarf::DW_AT_const_value, 0, Block);
if (MCSymbol *VS = DV->getDbgValueLabel())
addLabel(VariableDie, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr,
VS);
} else {
//FIXME : Handle other operand types.
delete VariableDie;
return NULL;
}
}
} else {
if (const MachineInstr *DVInsn = DV->getDbgValue()) {
bool updated = false;
// FIXME : Handle getNumOperands != 3
if (DVInsn->getNumOperands() == 3) {
if (DVInsn->getOperand(0).isReg())
updated = addRegisterAddress(VariableDie, DV, DVInsn->getOperand(0));
else if (DVInsn->getOperand(0).isImm())
updated = addConstantValue(VariableDie, DV, DVInsn->getOperand(0));
else if (DVInsn->getOperand(0).isFPImm())
updated = addConstantFPValue(VariableDie, DV, DVInsn->getOperand(0));
}
if (!updated) {
// If variableDie is not updated then DBG_VALUE instruction does not
// have valid variable info.
delete VariableDie;
return NULL;
}
}
else {
MachineLocation Location;
unsigned FrameReg;
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();

10
lib/CodeGen/AsmPrinter/DwarfDebug.h
View File

@ -32,6 +32,7 @@ class DbgVariable;
class MachineFrameInfo;
class MachineLocation;
class MachineModuleInfo;
class MachineOperand;
class MCAsmInfo;
class DIEAbbrev;
class DIE;
@ -304,6 +305,15 @@ private:
void addAddress(DIE *Die, unsigned Attribute,
const MachineLocation &Location);
/// addRegisterAddress - Add register location entry in variable DIE.
bool addRegisterAddress(DIE *Die, DbgVariable *DV, const MachineOperand &MO);
/// addConstantValue - Add constant value entry in variable DIE.
bool addConstantValue(DIE *Die, DbgVariable *DV, const MachineOperand &MO);
/// addConstantFPValue - Add constant value entry in variable DIE.
bool addConstantFPValue(DIE *Die, DbgVariable *DV, const MachineOperand &MO);
/// addComplexAddress - Start with the address based on the location provided,
/// and generate the DWARF information necessary to find the actual variable
/// (navigating the extra location information encoded in the type) based on