1 //===- SparcMCAsmInfo.cpp - Sparc asm properties --------------------------===//
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 // This file contains the declarations of the SparcMCAsmInfo properties.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "SparcMCAsmInfo.h"
14 #include "SparcMCExpr.h"
15 #include "llvm/ADT/Triple.h"
16 #include "llvm/BinaryFormat/Dwarf.h"
17 #include "llvm/MC/MCExpr.h"
18 #include "llvm/MC/MCStreamer.h"
19 #include "llvm/MC/MCTargetOptions.h"
20 
21 using namespace llvm;
22 
23 void SparcELFMCAsmInfo::anchor() {}
24 
25 SparcELFMCAsmInfo::SparcELFMCAsmInfo(const Triple &TheTriple) {
26   bool isV9 = (TheTriple.getArch() == Triple::sparcv9);
27   IsLittleEndian = (TheTriple.getArch() == Triple::sparcel);
28 
29   if (isV9) {
30     CodePointerSize = CalleeSaveStackSlotSize = 8;
31   }
32 
33   Data16bitsDirective = "\t.half\t";
34   Data32bitsDirective = "\t.word\t";
35   // .xword is only supported by V9.
36   Data64bitsDirective = (isV9) ? "\t.xword\t" : nullptr;
37   ZeroDirective = "\t.skip\t";
38   CommentString = "!";
39   SupportsDebugInformation = true;
40 
41   ExceptionsType = ExceptionHandling::DwarfCFI;
42 
43   SunStyleELFSectionSwitchSyntax = true;
44   UsesELFSectionDirectiveForBSS = true;
45 
46   UseIntegratedAssembler = true;
47 }
48 
49 const MCExpr*
50 SparcELFMCAsmInfo::getExprForPersonalitySymbol(const MCSymbol *Sym,
51                                                unsigned Encoding,
52                                                MCStreamer &Streamer) const {
53   if (Encoding & dwarf::DW_EH_PE_pcrel) {
54     MCContext &Ctx = Streamer.getContext();
55     return SparcMCExpr::create(SparcMCExpr::VK_Sparc_R_DISP32,
56                                MCSymbolRefExpr::create(Sym, Ctx), Ctx);
57   }
58 
59   return MCAsmInfo::getExprForPersonalitySymbol(Sym, Encoding, Streamer);
60 }
61 
62 const MCExpr*
63 SparcELFMCAsmInfo::getExprForFDESymbol(const MCSymbol *Sym,
64                                        unsigned Encoding,
65                                        MCStreamer &Streamer) const {
66   if (Encoding & dwarf::DW_EH_PE_pcrel) {
67     MCContext &Ctx = Streamer.getContext();
68     return SparcMCExpr::create(SparcMCExpr::VK_Sparc_R_DISP32,
69                                MCSymbolRefExpr::create(Sym, Ctx), Ctx);
70   }
71   return MCAsmInfo::getExprForFDESymbol(Sym, Encoding, Streamer);
72 }
73