970d02c42d
Add support for the new relocations and linking metadata section support in https://github.com/WebAssembly/tool-conventions/blob/master/Linking.md. In particular, this allows LLVM to indicate which variable is the stack pointer, so that it can be linked with other objects. This also adds support for emitting type relocations for call_indirect instructions. Right now, this is mainly tested by using wabt and hexdump to examine the output on selected testcases. We'll add more tests as the design stablizes and more of the pieces are in place. llvm-svn: 299141
61 lines
2.0 KiB
C++
61 lines
2.0 KiB
C++
// WebAssemblyInstPrinter.h - Print wasm MCInst to assembly syntax -*- C++ -*-//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief This class prints an WebAssembly MCInst to wasm file syntax.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_INSTPRINTER_WEBASSEMBLYINSTPRINTER_H
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#define LLVM_LIB_TARGET_WEBASSEMBLY_INSTPRINTER_WEBASSEMBLYINSTPRINTER_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/CodeGen/MachineValueType.h"
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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/Support/Wasm.h"
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namespace llvm {
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class MCSubtargetInfo;
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class WebAssemblyInstPrinter final : public MCInstPrinter {
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uint64_t ControlFlowCounter;
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SmallVector<std::pair<uint64_t, bool>, 0> ControlFlowStack;
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public:
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WebAssemblyInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
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const MCRegisterInfo &MRI);
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void printRegName(raw_ostream &OS, unsigned RegNo) const override;
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void printInst(const MCInst *MI, raw_ostream &OS, StringRef Annot,
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const MCSubtargetInfo &STI) override;
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// Used by tblegen code.
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void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
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void printWebAssemblyP2AlignOperand(const MCInst *MI, unsigned OpNo,
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raw_ostream &O);
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void printWebAssemblySignatureOperand(const MCInst *MI, unsigned OpNo,
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raw_ostream &O);
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// Autogenerated by tblgen.
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void printInstruction(const MCInst *MI, raw_ostream &O);
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static const char *getRegisterName(unsigned RegNo);
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};
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namespace WebAssembly {
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const char *TypeToString(MVT Ty);
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const char *TypeToString(wasm::ValType Type);
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} // end namespace WebAssembly
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} // end namespace llvm
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#endif
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