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-rw-r--r--lib/MC/MCStreamer.cpp141
1 files changed, 81 insertions, 60 deletions
diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp
index 0bac24d..7dffc3e 100644
--- a/lib/MC/MCStreamer.cpp
+++ b/lib/MC/MCStreamer.cpp
@@ -7,23 +7,24 @@
//
//===----------------------------------------------------------------------===//
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/LEB128.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/Twine.h"
+#include "llvm/Support/raw_ostream.h"
#include <cstdlib>
using namespace llvm;
MCStreamer::MCStreamer(MCContext &Ctx)
: Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
- CurrentW64UnwindInfo(0), LastSymbol(0) {
+ CurrentW64UnwindInfo(0), LastSymbol(0),
+ AutoInitSections(false) {
const MCSection *section = NULL;
SectionStack.push_back(std::make_pair(section, section));
}
@@ -33,6 +34,18 @@ MCStreamer::~MCStreamer() {
delete W64UnwindInfos[i];
}
+void MCStreamer::reset() {
+ for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
+ delete W64UnwindInfos[i];
+ EmitEHFrame = true;
+ EmitDebugFrame = false;
+ CurrentW64UnwindInfo = 0;
+ LastSymbol = 0;
+ const MCSection *section = NULL;
+ SectionStack.clear();
+ SectionStack.push_back(std::make_pair(section, section));
+}
+
const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
const MCSymbol *A,
const MCSymbol *B) {
@@ -181,6 +194,13 @@ void MCStreamer::EmitLabel(MCSymbol *Symbol) {
LastSymbol = Symbol;
}
+void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
+ assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
+ assert(getCurrentSection() && "Cannot emit before setting section!");
+ Symbol->setSection(*getCurrentSection());
+ LastSymbol = Symbol;
+}
+
void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
@@ -234,69 +254,58 @@ void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
EmitLabel(Frame.End);
}
-void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
+MCSymbol *MCStreamer::EmitCFICommon() {
EnsureValidFrame();
- MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
MCSymbol *Label = getContext().CreateTempSymbol();
EmitLabel(Label);
- MachineLocation Dest(MachineLocation::VirtualFP);
- MachineLocation Source(Register, -Offset);
- MCCFIInstruction Instruction(Label, Dest, Source);
+ return Label;
+}
+
+void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createDefCfa(Label, Register, Offset);
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createDefCfaOffset(Label, Offset);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MachineLocation Dest(MachineLocation::VirtualFP);
- MachineLocation Source(MachineLocation::VirtualFP, -Offset);
- MCCFIInstruction Instruction(Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MachineLocation Dest(MachineLocation::VirtualFP);
- MachineLocation Source(MachineLocation::VirtualFP, Adjustment);
- MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createDefCfaRegister(Label, Register);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MachineLocation Dest(Register);
- MachineLocation Source(MachineLocation::VirtualFP);
- MCCFIInstruction Instruction(Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createOffset(Label, Register, Offset);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MachineLocation Dest(Register, Offset);
- MachineLocation Source(Register, Offset);
- MCCFIInstruction Instruction(Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createRelOffset(Label, Register, Offset);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MachineLocation Dest(Register, Offset);
- MachineLocation Source(Register, Offset);
- MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
}
@@ -316,48 +325,40 @@ void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
}
void MCStreamer::EmitCFIRememberState() {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MCCFIInstruction Instruction(MCCFIInstruction::RememberState, Label);
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFIRestoreState() {
// FIXME: Error if there is no matching cfi_remember_state.
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MCCFIInstruction Instruction(MCCFIInstruction::RestoreState, Label);
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFISameValue(int64_t Register) {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createSameValue(Label, Register);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register);
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFIRestore(int64_t Register) {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createRestore(Label, Register);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label, Register);
CurFrame->Instructions.push_back(Instruction);
}
void MCStreamer::EmitCFIEscape(StringRef Values) {
- EnsureValidFrame();
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
- EmitLabel(Label);
- MCCFIInstruction Instruction(MCCFIInstruction::Escape, Label, Values);
CurFrame->Instructions.push_back(Instruction);
}
@@ -367,6 +368,22 @@ void MCStreamer::EmitCFISignalFrame() {
CurFrame->IsSignalFrame = true;
}
+void MCStreamer::EmitCFIUndefined(int64_t Register) {
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createUndefined(Label, Register);
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ CurFrame->Instructions.push_back(Instruction);
+}
+
+void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
+ MCSymbol *Label = EmitCFICommon();
+ MCCFIInstruction Instruction =
+ MCCFIInstruction::createRegister(Label, Register1, Register2);
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ CurFrame->Instructions.push_back(Instruction);
+}
+
void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
W64UnwindInfos.push_back(Frame);
CurrentW64UnwindInfo = W64UnwindInfos.back();
@@ -561,6 +578,10 @@ void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
abort();
}
+void MCStreamer::EmitTCEntry(const MCSymbol &S) {
+ llvm_unreachable("Unsupported method");
+}
+
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
/// the specified string in the output .s file. This capability is
/// indicated by the hasRawTextSupport() predicate.
generated by cgit v1.1 at 2025-11-11 15:49:43 +0000