1 //===-- PPCMCAsmInfo.cpp - PPC 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 MCAsmInfoDarwin properties.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "PPCMCAsmInfo.h"
14 #include "llvm/TargetParser/Triple.h"
15 
16 using namespace llvm;
17 
18 void PPCELFMCAsmInfo::anchor() { }
19 
20 PPCELFMCAsmInfo::PPCELFMCAsmInfo(bool is64Bit, const Triple& T) {
21   // FIXME: This is not always needed. For example, it is not needed in the
22   // v2 abi.
23   NeedsLocalForSize = true;
24 
25   if (is64Bit) {
26     CodePointerSize = CalleeSaveStackSlotSize = 8;
27   }
28   IsLittleEndian =
29       T.getArch() == Triple::ppc64le || T.getArch() == Triple::ppcle;
30 
31   // ".comm align is in bytes but .align is pow-2."
32   AlignmentIsInBytes = false;
33 
34   CommentString = "#";
35 
36   // Uses '.section' before '.bss' directive
37   UsesELFSectionDirectiveForBSS = true;
38 
39   // Debug Information
40   SupportsDebugInformation = true;
41 
42   DollarIsPC = true;
43 
44   // Set up DWARF directives
45   MinInstAlignment = 4;
46 
47   // Exceptions handling
48   ExceptionsType = ExceptionHandling::DwarfCFI;
49 
50   ZeroDirective = "\t.space\t";
51   Data64bitsDirective = is64Bit ? "\t.quad\t" : nullptr;
52   AssemblerDialect = 1;           // New-Style mnemonics.
53   LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
54 }
55 
56 void PPCXCOFFMCAsmInfo::anchor() {}
57 
58 PPCXCOFFMCAsmInfo::PPCXCOFFMCAsmInfo(bool Is64Bit, const Triple &T) {
59   if (T.getArch() == Triple::ppc64le || T.getArch() == Triple::ppcle)
60     report_fatal_error("XCOFF is not supported for little-endian targets");
61   CodePointerSize = CalleeSaveStackSlotSize = Is64Bit ? 8 : 4;
62 
63   // A size of 8 is only supported by the assembler under 64-bit.
64   Data64bitsDirective = Is64Bit ? "\t.vbyte\t8, " : nullptr;
65 
66   // Debug Information
67   SupportsDebugInformation = true;
68 
69   // Set up DWARF directives
70   MinInstAlignment = 4;
71 
72   // Support $ as PC in inline asm
73   DollarIsPC = true;
74 }
75