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     CodePointerSize = CalleeSaveStackSlotSize = 8;
24   }
25   IsLittleEndian = false;
26 
27   SeparatorString = "@";
28   CommentString = ";";
29   ExceptionsType = ExceptionHandling::DwarfCFI;
30 
31   if (!is64Bit)
32     Data64bitsDirective = nullptr; // We can't emit a 64-bit unit in PPC32 mode.
33 
34   AssemblerDialect = 1;           // New-Style mnemonics.
35   SupportsDebugInformation= true; // Debug information.
36 
37   // The installed assembler for OSX < 10.6 lacks some directives.
38   // FIXME: this should really be a check on the assembler characteristics
39   // rather than OS version
40   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 6))
41     HasWeakDefCanBeHiddenDirective = false;
42 
43   UseIntegratedAssembler = true;
44 }
45 
anchor()46 void PPCELFMCAsmInfo::anchor() { }
47 
PPCELFMCAsmInfo(bool is64Bit,const Triple & T)48 PPCELFMCAsmInfo::PPCELFMCAsmInfo(bool is64Bit, const Triple& T) {
49   // FIXME: This is not always needed. For example, it is not needed in the
50   // v2 abi.
51   NeedsLocalForSize = true;
52 
53   if (is64Bit) {
54     CodePointerSize = CalleeSaveStackSlotSize = 8;
55   }
56   IsLittleEndian = T.getArch() == Triple::ppc64le;
57 
58   // ".comm align is in bytes but .align is pow-2."
59   AlignmentIsInBytes = false;
60 
61   CommentString = "#";
62 
63   // Uses '.section' before '.bss' directive
64   UsesELFSectionDirectiveForBSS = true;
65 
66   // Debug Information
67   SupportsDebugInformation = true;
68 
69   DollarIsPC = true;
70 
71   // Set up DWARF directives
72   MinInstAlignment = 4;
73 
74   // Exceptions handling
75   ExceptionsType = ExceptionHandling::DwarfCFI;
76 
77   ZeroDirective = "\t.space\t";
78   Data64bitsDirective = is64Bit ? "\t.quad\t" : nullptr;
79   AssemblerDialect = 1;           // New-Style mnemonics.
80   LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
81 
82   UseIntegratedAssembler = true;
83 }
84 
85