aboutsummaryrefslogtreecommitdiff
path: root/contrib/llvm/lib/MC/MCWasmStreamer.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/lib/MC/MCWasmStreamer.cpp')
-rw-r--r--contrib/llvm/lib/MC/MCWasmStreamer.cpp229
1 files changed, 0 insertions, 229 deletions
diff --git a/contrib/llvm/lib/MC/MCWasmStreamer.cpp b/contrib/llvm/lib/MC/MCWasmStreamer.cpp
deleted file mode 100644
index 86fa72197855..000000000000
--- a/contrib/llvm/lib/MC/MCWasmStreamer.cpp
+++ /dev/null
@@ -1,229 +0,0 @@
-//===- lib/MC/MCWasmStreamer.cpp - Wasm Object Output ---------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file assembles .s files and emits Wasm .o object files.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/MC/MCWasmStreamer.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/MC/MCAsmBackend.h"
-#include "llvm/MC/MCAsmLayout.h"
-#include "llvm/MC/MCAssembler.h"
-#include "llvm/MC/MCCodeEmitter.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCObjectStreamer.h"
-#include "llvm/MC/MCSection.h"
-#include "llvm/MC/MCSectionWasm.h"
-#include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCSymbolWasm.h"
-#include "llvm/MC/MCValue.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/raw_ostream.h"
-
-using namespace llvm;
-
-MCWasmStreamer::~MCWasmStreamer() = default; // anchor.
-
-void MCWasmStreamer::mergeFragment(MCDataFragment *DF, MCDataFragment *EF) {
- flushPendingLabels(DF, DF->getContents().size());
-
- for (unsigned I = 0, E = EF->getFixups().size(); I != E; ++I) {
- EF->getFixups()[I].setOffset(EF->getFixups()[I].getOffset() +
- DF->getContents().size());
- DF->getFixups().push_back(EF->getFixups()[I]);
- }
- if (DF->getSubtargetInfo() == nullptr && EF->getSubtargetInfo())
- DF->setHasInstructions(*EF->getSubtargetInfo());
- DF->getContents().append(EF->getContents().begin(), EF->getContents().end());
-}
-
-void MCWasmStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
- // Let the target do whatever target specific stuff it needs to do.
- getAssembler().getBackend().handleAssemblerFlag(Flag);
-
- // Do any generic stuff we need to do.
- llvm_unreachable("invalid assembler flag!");
-}
-
-void MCWasmStreamer::ChangeSection(MCSection *Section,
- const MCExpr *Subsection) {
- MCAssembler &Asm = getAssembler();
- auto *SectionWasm = cast<MCSectionWasm>(Section);
- const MCSymbol *Grp = SectionWasm->getGroup();
- if (Grp)
- Asm.registerSymbol(*Grp);
-
- this->MCObjectStreamer::ChangeSection(Section, Subsection);
- Asm.registerSymbol(*Section->getBeginSymbol());
-}
-
-void MCWasmStreamer::EmitWeakReference(MCSymbol *Alias,
- const MCSymbol *Symbol) {
- getAssembler().registerSymbol(*Symbol);
- const MCExpr *Value = MCSymbolRefExpr::create(
- Symbol, MCSymbolRefExpr::VK_WEAKREF, getContext());
- Alias->setVariableValue(Value);
-}
-
-bool MCWasmStreamer::EmitSymbolAttribute(MCSymbol *S, MCSymbolAttr Attribute) {
- assert(Attribute != MCSA_IndirectSymbol && "indirect symbols not supported");
-
- auto *Symbol = cast<MCSymbolWasm>(S);
-
- // Adding a symbol attribute always introduces the symbol; note that an
- // important side effect of calling registerSymbol here is to register the
- // symbol with the assembler.
- getAssembler().registerSymbol(*Symbol);
-
- switch (Attribute) {
- case MCSA_LazyReference:
- case MCSA_Reference:
- case MCSA_SymbolResolver:
- case MCSA_PrivateExtern:
- case MCSA_WeakDefinition:
- case MCSA_WeakDefAutoPrivate:
- case MCSA_Invalid:
- case MCSA_IndirectSymbol:
- case MCSA_Protected:
- return false;
-
- case MCSA_Hidden:
- Symbol->setHidden(true);
- break;
-
- case MCSA_Weak:
- case MCSA_WeakReference:
- Symbol->setWeak(true);
- Symbol->setExternal(true);
- break;
-
- case MCSA_Global:
- Symbol->setExternal(true);
- break;
-
- case MCSA_ELF_TypeFunction:
- Symbol->setType(wasm::WASM_SYMBOL_TYPE_FUNCTION);
- break;
-
- case MCSA_ELF_TypeObject:
- case MCSA_Cold:
- break;
-
- case MCSA_NoDeadStrip:
- Symbol->setExported();
- break;
-
- default:
- // unrecognized directive
- llvm_unreachable("unexpected MCSymbolAttr");
- return false;
- }
-
- return true;
-}
-
-void MCWasmStreamer::EmitCommonSymbol(MCSymbol *S, uint64_t Size,
- unsigned ByteAlignment) {
- llvm_unreachable("Common symbols are not yet implemented for Wasm");
-}
-
-void MCWasmStreamer::emitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
- cast<MCSymbolWasm>(Symbol)->setSize(Value);
-}
-
-void MCWasmStreamer::EmitLocalCommonSymbol(MCSymbol *S, uint64_t Size,
- unsigned ByteAlignment) {
- llvm_unreachable("Local common symbols are not yet implemented for Wasm");
-}
-
-void MCWasmStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
- SMLoc Loc) {
- MCObjectStreamer::EmitValueImpl(Value, Size, Loc);
-}
-
-void MCWasmStreamer::EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
- unsigned ValueSize,
- unsigned MaxBytesToEmit) {
- MCObjectStreamer::EmitValueToAlignment(ByteAlignment, Value, ValueSize,
- MaxBytesToEmit);
-}
-
-void MCWasmStreamer::EmitIdent(StringRef IdentString) {
- // TODO(sbc): Add the ident section once we support mergable strings
- // sections in the object format
-}
-
-void MCWasmStreamer::EmitInstToFragment(const MCInst &Inst,
- const MCSubtargetInfo &STI) {
- this->MCObjectStreamer::EmitInstToFragment(Inst, STI);
-}
-
-void MCWasmStreamer::EmitInstToData(const MCInst &Inst,
- const MCSubtargetInfo &STI) {
- MCAssembler &Assembler = getAssembler();
- SmallVector<MCFixup, 4> Fixups;
- SmallString<256> Code;
- raw_svector_ostream VecOS(Code);
- Assembler.getEmitter().encodeInstruction(Inst, VecOS, Fixups, STI);
-
- // Append the encoded instruction to the current data fragment (or create a
- // new such fragment if the current fragment is not a data fragment).
- MCDataFragment *DF = getOrCreateDataFragment();
-
- // Add the fixups and data.
- for (unsigned I = 0, E = Fixups.size(); I != E; ++I) {
- Fixups[I].setOffset(Fixups[I].getOffset() + DF->getContents().size());
- DF->getFixups().push_back(Fixups[I]);
- }
- DF->setHasInstructions(STI);
- DF->getContents().append(Code.begin(), Code.end());
-}
-
-void MCWasmStreamer::FinishImpl() {
- EmitFrames(nullptr);
-
- this->MCObjectStreamer::FinishImpl();
-}
-
-MCStreamer *llvm::createWasmStreamer(MCContext &Context,
- std::unique_ptr<MCAsmBackend> &&MAB,
- std::unique_ptr<MCObjectWriter> &&OW,
- std::unique_ptr<MCCodeEmitter> &&CE,
- bool RelaxAll) {
- MCWasmStreamer *S =
- new MCWasmStreamer(Context, std::move(MAB), std::move(OW), std::move(CE));
- if (RelaxAll)
- S->getAssembler().setRelaxAll(true);
- return S;
-}
-
-void MCWasmStreamer::EmitThumbFunc(MCSymbol *Func) {
- llvm_unreachable("Generic Wasm doesn't support this directive");
-}
-
-void MCWasmStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
- llvm_unreachable("Wasm doesn't support this directive");
-}
-
-void MCWasmStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
- uint64_t Size, unsigned ByteAlignment,
- SMLoc Loc) {
- llvm_unreachable("Wasm doesn't support this directive");
-}
-
-void MCWasmStreamer::EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol,
- uint64_t Size, unsigned ByteAlignment) {
- llvm_unreachable("Wasm doesn't support this directive");
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-06 15:59:36 +0000