1//===- HexagonAsmPrinter.h - Print machine code -----------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Hexagon Assembly printer class.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H
14#define LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H
15
16#include "HexagonSubtarget.h"
17#include "llvm/CodeGen/AsmPrinter.h"
18#include "llvm/CodeGen/MachineFunction.h"
19#include "llvm/MC/MCStreamer.h"
20#include <utility>
21
22namespace llvm {
23
24class MachineInstr;
25class MCInst;
26class raw_ostream;
27class TargetMachine;
28
29 class HexagonAsmPrinter : public AsmPrinter {
30 public:
31 static char ID;
32
33 private:
34 const HexagonSubtarget *Subtarget = nullptr;
35
36 void emitAttributes();
37
38 public:
39 explicit HexagonAsmPrinter(TargetMachine &TM,
40 std::unique_ptr<MCStreamer> Streamer)
41 : AsmPrinter(TM, std::move(Streamer), ID) {}
42
43 bool runOnMachineFunction(MachineFunction &Fn) override {
44 Subtarget = &Fn.getSubtarget<HexagonSubtarget>();
45 const bool Modified = AsmPrinter::runOnMachineFunction(MF&: Fn);
46 // Emit the XRay table for this function.
47 emitXRayTable();
48
49 return Modified;
50 }
51
52 StringRef getPassName() const override {
53 return "Hexagon Assembly Printer";
54 }
55
56 bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB)
57 const override;
58
59 void emitInstruction(const MachineInstr *MI) override;
60
61 //===------------------------------------------------------------------===//
62 // XRay implementation
63 //===------------------------------------------------------------------===//
64 // XRay-specific lowering for Hexagon.
65 void LowerPATCHABLE_FUNCTION_ENTER(const MachineInstr &MI);
66 void LowerPATCHABLE_FUNCTION_EXIT(const MachineInstr &MI);
67 void LowerPATCHABLE_TAIL_CALL(const MachineInstr &MI);
68 void EmitSled(const MachineInstr &MI, SledKind Kind);
69
70 void HexagonProcessInstruction(MCInst &Inst, const MachineInstr &MBB);
71
72 void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O);
73 bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
74 const char *ExtraCode, raw_ostream &OS) override;
75 bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
76 const char *ExtraCode, raw_ostream &OS) override;
77 void emitStartOfAsmFile(Module &M) override;
78 void emitEndOfAsmFile(Module &M) override;
79 };
80
81} // end namespace llvm
82
83#endif // LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H
84