1 //===-- ARMAsmBackendDarwin.h   ARM Asm Backend Darwin ----------*- 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 #ifndef LLVM_LIB_TARGET_ARM_ARMASMBACKENDDARWIN_H
10 #define LLVM_LIB_TARGET_ARM_ARMASMBACKENDDARWIN_H
11 
12 #include "ARMAsmBackend.h"
13 #include "llvm/BinaryFormat/MachO.h"
14 #include "llvm/MC/MCContext.h"
15 #include "llvm/MC/MCObjectWriter.h"
16 
17 namespace llvm {
18 class ARMAsmBackendDarwin : public ARMAsmBackend {
19   const MCRegisterInfo &MRI;
20   Triple TT;
21 public:
22   const MachO::CPUSubTypeARM Subtype;
23   ARMAsmBackendDarwin(const Target &T, const MCSubtargetInfo &STI,
24                       const MCRegisterInfo &MRI)
25       : ARMAsmBackend(T, STI.getTargetTriple().isThumb(),
26                       llvm::endianness::little),
27         MRI(MRI), TT(STI.getTargetTriple()),
28         Subtype((MachO::CPUSubTypeARM)cantFail(
29             MachO::getCPUSubType(STI.getTargetTriple()))) {}
30 
31   std::unique_ptr<MCObjectTargetWriter>
32   createObjectTargetWriter() const override {
33     return createARMMachObjectWriter(
34         /*Is64Bit=*/false, cantFail(MachO::getCPUType(TT)), Subtype);
35   }
36 
37   uint32_t generateCompactUnwindEncoding(const MCDwarfFrameInfo *FI,
38                                          const MCContext *Ctxt) const override;
39 };
40 } // end namespace llvm
41 
42 #endif
43