1 //===-- PPCMCAsmInfo.cpp - PPC asm properties -----------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains the declarations of the MCAsmInfoDarwin properties.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "PPCMCAsmInfo.h"
15 #include "llvm/ADT/Triple.h"
16 
17 using namespace llvm;
18 
anchor()19 void PPCMCAsmInfoDarwin::anchor() { }
20 
PPCMCAsmInfoDarwin(bool is64Bit,const Triple & T)21 PPCMCAsmInfoDarwin::PPCMCAsmInfoDarwin(bool is64Bit, const Triple& T) {
22   if (is64Bit) {
23     PointerSize = CalleeSaveStackSlotSize = 8;
24   }
25   IsLittleEndian = false;
26 
27   CommentString = ";";
28   ExceptionsType = ExceptionHandling::DwarfCFI;
29 
30   if (!is64Bit)
31     Data64bitsDirective = nullptr; // We can't emit a 64-bit unit in PPC32 mode.
32 
33   AssemblerDialect = 1;           // New-Style mnemonics.
34   SupportsDebugInformation= true; // Debug information.
35 
36   // The installed assembler for OSX < 10.6 lacks some directives.
37   // FIXME: this should really be a check on the assembler characteristics
38   // rather than OS version
39   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 6))
40     HasWeakDefCanBeHiddenDirective = false;
41 
42   UseIntegratedAssembler = true;
43 }
44 
anchor()45 void PPCELFMCAsmInfo::anchor() { }
46 
PPCELFMCAsmInfo(bool is64Bit,const Triple & T)47 PPCELFMCAsmInfo::PPCELFMCAsmInfo(bool is64Bit, const Triple& T) {
48   // FIXME: This is not always needed. For example, it is not needed in the
49   // v2 abi.
50   NeedsLocalForSize = true;
51 
52   if (is64Bit) {
53     PointerSize = CalleeSaveStackSlotSize = 8;
54   }
55   IsLittleEndian = T.getArch() == Triple::ppc64le;
56 
57   // ".comm align is in bytes but .align is pow-2."
58   AlignmentIsInBytes = false;
59 
60   CommentString = "#";
61 
62   // Uses '.section' before '.bss' directive
63   UsesELFSectionDirectiveForBSS = true;
64 
65   // Debug Information
66   SupportsDebugInformation = true;
67 
68   DollarIsPC = true;
69 
70   // Set up DWARF directives
71   MinInstAlignment = 4;
72 
73   // Exceptions handling
74   ExceptionsType = ExceptionHandling::DwarfCFI;
75 
76   ZeroDirective = "\t.space\t";
77   Data64bitsDirective = is64Bit ? "\t.quad\t" : nullptr;
78   AssemblerDialect = 1;           // New-Style mnemonics.
79   LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
80 
81   UseIntegratedAssembler = true;
82 }
83 
84