You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
601 lines
19 KiB
601 lines
19 KiB
//===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Data structures for DWARF info entries.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/DIE.h"
|
|
#include "DwarfCompileUnit.h"
|
|
#include "DwarfDebug.h"
|
|
#include "DwarfUnit.h"
|
|
#include "llvm/ADT/Twine.h"
|
|
#include "llvm/CodeGen/AsmPrinter.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCStreamer.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/Support/Debug.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/Format.h"
|
|
#include "llvm/Support/FormattedStream.h"
|
|
#include "llvm/Support/LEB128.h"
|
|
#include "llvm/Support/MD5.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
using namespace llvm;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIEAbbrevData Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// Profile - Used to gather unique data for the abbreviation folding set.
|
|
///
|
|
void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const {
|
|
// Explicitly cast to an integer type for which FoldingSetNodeID has
|
|
// overloads. Otherwise MSVC 2010 thinks this call is ambiguous.
|
|
ID.AddInteger(unsigned(Attribute));
|
|
ID.AddInteger(unsigned(Form));
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIEAbbrev Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// Profile - Used to gather unique data for the abbreviation folding set.
|
|
///
|
|
void DIEAbbrev::Profile(FoldingSetNodeID &ID) const {
|
|
ID.AddInteger(unsigned(Tag));
|
|
ID.AddInteger(unsigned(Children));
|
|
|
|
// For each attribute description.
|
|
for (unsigned i = 0, N = Data.size(); i < N; ++i)
|
|
Data[i].Profile(ID);
|
|
}
|
|
|
|
/// Emit - Print the abbreviation using the specified asm printer.
|
|
///
|
|
void DIEAbbrev::Emit(const AsmPrinter *AP) const {
|
|
// Emit its Dwarf tag type.
|
|
AP->EmitULEB128(Tag, dwarf::TagString(Tag));
|
|
|
|
// Emit whether it has children DIEs.
|
|
AP->EmitULEB128((unsigned)Children, dwarf::ChildrenString(Children));
|
|
|
|
// For each attribute description.
|
|
for (unsigned i = 0, N = Data.size(); i < N; ++i) {
|
|
const DIEAbbrevData &AttrData = Data[i];
|
|
|
|
// Emit attribute type.
|
|
AP->EmitULEB128(AttrData.getAttribute(),
|
|
dwarf::AttributeString(AttrData.getAttribute()));
|
|
|
|
// Emit form type.
|
|
AP->EmitULEB128(AttrData.getForm(),
|
|
dwarf::FormEncodingString(AttrData.getForm()));
|
|
}
|
|
|
|
// Mark end of abbreviation.
|
|
AP->EmitULEB128(0, "EOM(1)");
|
|
AP->EmitULEB128(0, "EOM(2)");
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEAbbrev::print(raw_ostream &O) {
|
|
O << "Abbreviation @"
|
|
<< format("0x%lx", (long)(intptr_t)this)
|
|
<< " "
|
|
<< dwarf::TagString(Tag)
|
|
<< " "
|
|
<< dwarf::ChildrenString(Children)
|
|
<< '\n';
|
|
|
|
for (unsigned i = 0, N = Data.size(); i < N; ++i) {
|
|
O << " "
|
|
<< dwarf::AttributeString(Data[i].getAttribute())
|
|
<< " "
|
|
<< dwarf::FormEncodingString(Data[i].getForm())
|
|
<< '\n';
|
|
}
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEAbbrev::dump() { print(dbgs()); }
|
|
|
|
DIEAbbrev DIE::generateAbbrev() const {
|
|
DIEAbbrev Abbrev(Tag, hasChildren());
|
|
for (const DIEValue &V : values())
|
|
Abbrev.AddAttribute(V.getAttribute(), V.getForm());
|
|
return Abbrev;
|
|
}
|
|
|
|
/// Climb up the parent chain to get the unit DIE to which this DIE
|
|
/// belongs.
|
|
const DIE *DIE::getUnit() const {
|
|
const DIE *Cu = getUnitOrNull();
|
|
assert(Cu && "We should not have orphaned DIEs.");
|
|
return Cu;
|
|
}
|
|
|
|
/// Climb up the parent chain to get the unit DIE this DIE belongs
|
|
/// to. Return NULL if DIE is not added to an owner yet.
|
|
const DIE *DIE::getUnitOrNull() const {
|
|
const DIE *p = this;
|
|
while (p) {
|
|
if (p->getTag() == dwarf::DW_TAG_compile_unit ||
|
|
p->getTag() == dwarf::DW_TAG_type_unit)
|
|
return p;
|
|
p = p->getParent();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
DIEValue DIE::findAttribute(dwarf::Attribute Attribute) const {
|
|
// Iterate through all the attributes until we find the one we're
|
|
// looking for, if we can't find it return NULL.
|
|
for (const auto &V : values())
|
|
if (V.getAttribute() == Attribute)
|
|
return V;
|
|
return DIEValue();
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
static void printValues(raw_ostream &O, const DIEValueList &Values,
|
|
StringRef Type, unsigned Size, unsigned IndentCount) {
|
|
O << Type << ": Size: " << Size << "\n";
|
|
|
|
unsigned I = 0;
|
|
const std::string Indent(IndentCount, ' ');
|
|
for (const auto &V : Values.values()) {
|
|
O << Indent;
|
|
O << "Blk[" << I++ << "]";
|
|
O << " " << dwarf::FormEncodingString(V.getForm()) << " ";
|
|
V.print(O);
|
|
O << "\n";
|
|
}
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIE::print(raw_ostream &O, unsigned IndentCount) const {
|
|
const std::string Indent(IndentCount, ' ');
|
|
O << Indent << "Die: " << format("0x%lx", (long)(intptr_t) this)
|
|
<< ", Offset: " << Offset << ", Size: " << Size << "\n";
|
|
|
|
O << Indent << dwarf::TagString(getTag()) << " "
|
|
<< dwarf::ChildrenString(hasChildren()) << "\n";
|
|
|
|
IndentCount += 2;
|
|
for (const auto &V : values()) {
|
|
O << Indent;
|
|
O << dwarf::AttributeString(V.getAttribute());
|
|
O << " " << dwarf::FormEncodingString(V.getForm()) << " ";
|
|
V.print(O);
|
|
O << "\n";
|
|
}
|
|
IndentCount -= 2;
|
|
|
|
for (const auto &Child : children())
|
|
Child.print(O, IndentCount + 4);
|
|
|
|
O << "\n";
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIE::dump() {
|
|
print(dbgs());
|
|
}
|
|
|
|
void DIEValue::EmitValue(const AsmPrinter *AP) const {
|
|
switch (Ty) {
|
|
case isNone:
|
|
llvm_unreachable("Expected valid DIEValue");
|
|
#define HANDLE_DIEVALUE(T) \
|
|
case is##T: \
|
|
getDIE##T().EmitValue(AP, Form); \
|
|
break;
|
|
#include "llvm/CodeGen/DIEValue.def"
|
|
}
|
|
}
|
|
|
|
unsigned DIEValue::SizeOf(const AsmPrinter *AP) const {
|
|
switch (Ty) {
|
|
case isNone:
|
|
llvm_unreachable("Expected valid DIEValue");
|
|
#define HANDLE_DIEVALUE(T) \
|
|
case is##T: \
|
|
return getDIE##T().SizeOf(AP, Form);
|
|
#include "llvm/CodeGen/DIEValue.def"
|
|
}
|
|
llvm_unreachable("Unknown DIE kind");
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEValue::print(raw_ostream &O) const {
|
|
switch (Ty) {
|
|
case isNone:
|
|
llvm_unreachable("Expected valid DIEValue");
|
|
#define HANDLE_DIEVALUE(T) \
|
|
case is##T: \
|
|
getDIE##T().print(O); \
|
|
break;
|
|
#include "llvm/CodeGen/DIEValue.def"
|
|
}
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEValue::dump() const {
|
|
print(dbgs());
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIEInteger Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// EmitValue - Emit integer of appropriate size.
|
|
///
|
|
void DIEInteger::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
|
|
unsigned Size = ~0U;
|
|
switch (Form) {
|
|
case dwarf::DW_FORM_flag_present:
|
|
// Emit something to keep the lines and comments in sync.
|
|
// FIXME: Is there a better way to do this?
|
|
Asm->OutStreamer->AddBlankLine();
|
|
return;
|
|
case dwarf::DW_FORM_flag: // Fall thru
|
|
case dwarf::DW_FORM_ref1: // Fall thru
|
|
case dwarf::DW_FORM_data1: Size = 1; break;
|
|
case dwarf::DW_FORM_ref2: // Fall thru
|
|
case dwarf::DW_FORM_data2: Size = 2; break;
|
|
case dwarf::DW_FORM_sec_offset: // Fall thru
|
|
case dwarf::DW_FORM_strp: // Fall thru
|
|
case dwarf::DW_FORM_ref4: // Fall thru
|
|
case dwarf::DW_FORM_data4: Size = 4; break;
|
|
case dwarf::DW_FORM_ref8: // Fall thru
|
|
case dwarf::DW_FORM_ref_sig8: // Fall thru
|
|
case dwarf::DW_FORM_data8: Size = 8; break;
|
|
case dwarf::DW_FORM_GNU_str_index: Asm->EmitULEB128(Integer); return;
|
|
case dwarf::DW_FORM_GNU_addr_index: Asm->EmitULEB128(Integer); return;
|
|
case dwarf::DW_FORM_udata: Asm->EmitULEB128(Integer); return;
|
|
case dwarf::DW_FORM_sdata: Asm->EmitSLEB128(Integer); return;
|
|
case dwarf::DW_FORM_addr:
|
|
Size = Asm->getPointerSize();
|
|
break;
|
|
case dwarf::DW_FORM_ref_addr:
|
|
Size = SizeOf(Asm, dwarf::DW_FORM_ref_addr);
|
|
break;
|
|
default: llvm_unreachable("DIE Value form not supported yet");
|
|
}
|
|
Asm->OutStreamer->EmitIntValue(Integer, Size);
|
|
}
|
|
|
|
/// SizeOf - Determine size of integer value in bytes.
|
|
///
|
|
unsigned DIEInteger::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
switch (Form) {
|
|
case dwarf::DW_FORM_flag_present: return 0;
|
|
case dwarf::DW_FORM_flag: // Fall thru
|
|
case dwarf::DW_FORM_ref1: // Fall thru
|
|
case dwarf::DW_FORM_data1: return sizeof(int8_t);
|
|
case dwarf::DW_FORM_ref2: // Fall thru
|
|
case dwarf::DW_FORM_data2: return sizeof(int16_t);
|
|
case dwarf::DW_FORM_sec_offset: // Fall thru
|
|
case dwarf::DW_FORM_strp: // Fall thru
|
|
case dwarf::DW_FORM_ref4: // Fall thru
|
|
case dwarf::DW_FORM_data4: return sizeof(int32_t);
|
|
case dwarf::DW_FORM_ref8: // Fall thru
|
|
case dwarf::DW_FORM_ref_sig8: // Fall thru
|
|
case dwarf::DW_FORM_data8: return sizeof(int64_t);
|
|
case dwarf::DW_FORM_GNU_str_index: return getULEB128Size(Integer);
|
|
case dwarf::DW_FORM_GNU_addr_index: return getULEB128Size(Integer);
|
|
case dwarf::DW_FORM_udata: return getULEB128Size(Integer);
|
|
case dwarf::DW_FORM_sdata: return getSLEB128Size(Integer);
|
|
case dwarf::DW_FORM_addr:
|
|
return AP->getPointerSize();
|
|
case dwarf::DW_FORM_ref_addr:
|
|
if (AP->OutStreamer->getContext().getDwarfVersion() == 2)
|
|
return AP->getPointerSize();
|
|
return sizeof(int32_t);
|
|
default: llvm_unreachable("DIE Value form not supported yet");
|
|
}
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEInteger::print(raw_ostream &O) const {
|
|
O << "Int: " << (int64_t)Integer << " 0x";
|
|
O.write_hex(Integer);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIEExpr Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// EmitValue - Emit expression value.
|
|
///
|
|
void DIEExpr::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
AP->OutStreamer->EmitValue(Expr, SizeOf(AP, Form));
|
|
}
|
|
|
|
/// SizeOf - Determine size of expression value in bytes.
|
|
///
|
|
unsigned DIEExpr::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
if (Form == dwarf::DW_FORM_data4) return 4;
|
|
if (Form == dwarf::DW_FORM_sec_offset) return 4;
|
|
if (Form == dwarf::DW_FORM_strp) return 4;
|
|
return AP->getPointerSize();
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEExpr::print(raw_ostream &O) const { O << "Expr: " << *Expr; }
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIELabel Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// EmitValue - Emit label value.
|
|
///
|
|
void DIELabel::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
AP->EmitLabelReference(Label, SizeOf(AP, Form),
|
|
Form == dwarf::DW_FORM_strp ||
|
|
Form == dwarf::DW_FORM_sec_offset ||
|
|
Form == dwarf::DW_FORM_ref_addr);
|
|
}
|
|
|
|
/// SizeOf - Determine size of label value in bytes.
|
|
///
|
|
unsigned DIELabel::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
if (Form == dwarf::DW_FORM_data4) return 4;
|
|
if (Form == dwarf::DW_FORM_sec_offset) return 4;
|
|
if (Form == dwarf::DW_FORM_strp) return 4;
|
|
return AP->getPointerSize();
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIELabel::print(raw_ostream &O) const { O << "Lbl: " << Label->getName(); }
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIEDelta Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// EmitValue - Emit delta value.
|
|
///
|
|
void DIEDelta::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
AP->EmitLabelDifference(LabelHi, LabelLo, SizeOf(AP, Form));
|
|
}
|
|
|
|
/// SizeOf - Determine size of delta value in bytes.
|
|
///
|
|
unsigned DIEDelta::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
if (Form == dwarf::DW_FORM_data4) return 4;
|
|
if (Form == dwarf::DW_FORM_sec_offset) return 4;
|
|
if (Form == dwarf::DW_FORM_strp) return 4;
|
|
return AP->getPointerSize();
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEDelta::print(raw_ostream &O) const {
|
|
O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIEString Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// EmitValue - Emit string value.
|
|
///
|
|
void DIEString::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
assert(
|
|
(Form == dwarf::DW_FORM_strp || Form == dwarf::DW_FORM_GNU_str_index) &&
|
|
"Expected valid string form");
|
|
|
|
// Index of string in symbol table.
|
|
if (Form == dwarf::DW_FORM_GNU_str_index) {
|
|
DIEInteger(S.getIndex()).EmitValue(AP, Form);
|
|
return;
|
|
}
|
|
|
|
// Relocatable symbol.
|
|
assert(Form == dwarf::DW_FORM_strp);
|
|
if (AP->MAI->doesDwarfUseRelocationsAcrossSections()) {
|
|
DIELabel(S.getSymbol()).EmitValue(AP, Form);
|
|
return;
|
|
}
|
|
|
|
// Offset into symbol table.
|
|
DIEInteger(S.getOffset()).EmitValue(AP, Form);
|
|
}
|
|
|
|
/// SizeOf - Determine size of delta value in bytes.
|
|
///
|
|
unsigned DIEString::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
assert(
|
|
(Form == dwarf::DW_FORM_strp || Form == dwarf::DW_FORM_GNU_str_index) &&
|
|
"Expected valid string form");
|
|
|
|
// Index of string in symbol table.
|
|
if (Form == dwarf::DW_FORM_GNU_str_index)
|
|
return DIEInteger(S.getIndex()).SizeOf(AP, Form);
|
|
|
|
// Relocatable symbol.
|
|
if (AP->MAI->doesDwarfUseRelocationsAcrossSections())
|
|
return DIELabel(S.getSymbol()).SizeOf(AP, Form);
|
|
|
|
// Offset into symbol table.
|
|
return DIEInteger(S.getOffset()).SizeOf(AP, Form);
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEString::print(raw_ostream &O) const {
|
|
O << "String: " << S.getString();
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIEEntry Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// EmitValue - Emit debug information entry offset.
|
|
///
|
|
void DIEEntry::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
|
|
if (Form == dwarf::DW_FORM_ref_addr) {
|
|
const DwarfDebug *DD = AP->getDwarfDebug();
|
|
unsigned Addr = Entry->getOffset();
|
|
assert(!DD->useSplitDwarf() && "TODO: dwo files can't have relocations.");
|
|
// For DW_FORM_ref_addr, output the offset from beginning of debug info
|
|
// section. Entry->getOffset() returns the offset from start of the
|
|
// compile unit.
|
|
DwarfCompileUnit *CU = DD->lookupUnit(Entry->getUnit());
|
|
assert(CU && "CUDie should belong to a CU.");
|
|
Addr += CU->getDebugInfoOffset();
|
|
if (AP->MAI->doesDwarfUseRelocationsAcrossSections())
|
|
AP->EmitLabelPlusOffset(CU->getSectionSym(), Addr,
|
|
DIEEntry::getRefAddrSize(AP));
|
|
else
|
|
AP->OutStreamer->EmitIntValue(Addr, DIEEntry::getRefAddrSize(AP));
|
|
} else
|
|
AP->EmitInt32(Entry->getOffset());
|
|
}
|
|
|
|
unsigned DIEEntry::getRefAddrSize(const AsmPrinter *AP) {
|
|
// DWARF4: References that use the attribute form DW_FORM_ref_addr are
|
|
// specified to be four bytes in the DWARF 32-bit format and eight bytes
|
|
// in the DWARF 64-bit format, while DWARF Version 2 specifies that such
|
|
// references have the same size as an address on the target system.
|
|
const DwarfDebug *DD = AP->getDwarfDebug();
|
|
assert(DD && "Expected Dwarf Debug info to be available");
|
|
if (DD->getDwarfVersion() == 2)
|
|
return AP->getPointerSize();
|
|
return sizeof(int32_t);
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEEntry::print(raw_ostream &O) const {
|
|
O << format("Die: 0x%lx", (long)(intptr_t)&Entry);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIELoc Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ComputeSize - calculate the size of the location expression.
|
|
///
|
|
unsigned DIELoc::ComputeSize(const AsmPrinter *AP) const {
|
|
if (!Size) {
|
|
for (const auto &V : values())
|
|
Size += V.SizeOf(AP);
|
|
}
|
|
|
|
return Size;
|
|
}
|
|
|
|
/// EmitValue - Emit location data.
|
|
///
|
|
void DIELoc::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
|
|
switch (Form) {
|
|
default: llvm_unreachable("Improper form for block");
|
|
case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break;
|
|
case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break;
|
|
case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break;
|
|
case dwarf::DW_FORM_block:
|
|
case dwarf::DW_FORM_exprloc:
|
|
Asm->EmitULEB128(Size); break;
|
|
}
|
|
|
|
for (const auto &V : values())
|
|
V.EmitValue(Asm);
|
|
}
|
|
|
|
/// SizeOf - Determine size of location data in bytes.
|
|
///
|
|
unsigned DIELoc::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
switch (Form) {
|
|
case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
|
|
case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
|
|
case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
|
|
case dwarf::DW_FORM_block:
|
|
case dwarf::DW_FORM_exprloc:
|
|
return Size + getULEB128Size(Size);
|
|
default: llvm_unreachable("Improper form for block");
|
|
}
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIELoc::print(raw_ostream &O) const {
|
|
printValues(O, *this, "ExprLoc", Size, 5);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIEBlock Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ComputeSize - calculate the size of the block.
|
|
///
|
|
unsigned DIEBlock::ComputeSize(const AsmPrinter *AP) const {
|
|
if (!Size) {
|
|
for (const auto &V : values())
|
|
Size += V.SizeOf(AP);
|
|
}
|
|
|
|
return Size;
|
|
}
|
|
|
|
/// EmitValue - Emit block data.
|
|
///
|
|
void DIEBlock::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
|
|
switch (Form) {
|
|
default: llvm_unreachable("Improper form for block");
|
|
case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break;
|
|
case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break;
|
|
case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break;
|
|
case dwarf::DW_FORM_block: Asm->EmitULEB128(Size); break;
|
|
}
|
|
|
|
for (const auto &V : values())
|
|
V.EmitValue(Asm);
|
|
}
|
|
|
|
/// SizeOf - Determine size of block data in bytes.
|
|
///
|
|
unsigned DIEBlock::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
switch (Form) {
|
|
case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
|
|
case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
|
|
case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
|
|
case dwarf::DW_FORM_block: return Size + getULEB128Size(Size);
|
|
default: llvm_unreachable("Improper form for block");
|
|
}
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIEBlock::print(raw_ostream &O) const {
|
|
printValues(O, *this, "Blk", Size, 5);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIELocList Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
unsigned DIELocList::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
if (Form == dwarf::DW_FORM_data4)
|
|
return 4;
|
|
if (Form == dwarf::DW_FORM_sec_offset)
|
|
return 4;
|
|
return AP->getPointerSize();
|
|
}
|
|
|
|
/// EmitValue - Emit label value.
|
|
///
|
|
void DIELocList::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
|
|
DwarfDebug *DD = AP->getDwarfDebug();
|
|
MCSymbol *Label = DD->getDebugLocs().getList(Index).Label;
|
|
AP->emitDwarfSymbolReference(Label, /*ForceOffset*/ DD->useSplitDwarf());
|
|
}
|
|
|
|
LLVM_DUMP_METHOD
|
|
void DIELocList::print(raw_ostream &O) const { O << "LocList: " << Index; }
|