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 
19 void PPCMCAsmInfoDarwin::anchor() { }
20 
21 /// This version of the constructor is here to maintain ABI compatibility with
22 /// LLVM 3.4.0
23 PPCMCAsmInfoDarwin::PPCMCAsmInfoDarwin(bool is64Bit) {
24   if (is64Bit) {
25     PointerSize = CalleeSaveStackSlotSize = 8;
26   }
27   IsLittleEndian = false;
28 
29   CommentString = ";";
30   ExceptionsType = ExceptionHandling::DwarfCFI;
31 
32   if (!is64Bit)
33     Data64bitsDirective = 0;      // We can't emit a 64-bit unit in PPC32 mode.
34 
35   AssemblerDialect = 1;           // New-Style mnemonics.
36   SupportsDebugInformation= true; // Debug information.
37 }
38 
39 PPCMCAsmInfoDarwin::PPCMCAsmInfoDarwin(bool is64Bit, const Triple& T) {
40   if (is64Bit) {
41     PointerSize = CalleeSaveStackSlotSize = 8;
42   }
43   IsLittleEndian = false;
44 
45   CommentString = ";";
46   ExceptionsType = ExceptionHandling::DwarfCFI;
47 
48   if (!is64Bit)
49     Data64bitsDirective = 0;      // We can't emit a 64-bit unit in PPC32 mode.
50 
51   AssemblerDialect = 1;           // New-Style mnemonics.
52   SupportsDebugInformation= true; // Debug information.
53 
54   // old assembler lacks some directives
55   // FIXME: this should really be a check on the assembler characteristics
56   // rather than OS version
57   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 6))
58     HasWeakDefCanBeHiddenDirective = false;
59 }
60 
61 void PPCLinuxMCAsmInfo::anchor() { }
62 
63 PPCLinuxMCAsmInfo::PPCLinuxMCAsmInfo(bool is64Bit) {
64   if (is64Bit) {
65     PointerSize = CalleeSaveStackSlotSize = 8;
66   }
67   IsLittleEndian = false;
68 
69   // ".comm align is in bytes but .align is pow-2."
70   AlignmentIsInBytes = false;
71 
72   CommentString = "#";
73   GlobalPrefix = "";
74   PrivateGlobalPrefix = ".L";
75 
76   // Uses '.section' before '.bss' directive
77   UsesELFSectionDirectiveForBSS = true;
78 
79   // Debug Information
80   SupportsDebugInformation = true;
81 
82   DollarIsPC = true;
83 
84   // Set up DWARF directives
85   HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
86   MinInstAlignment = 4;
87 
88   // Exceptions handling
89   ExceptionsType = ExceptionHandling::DwarfCFI;
90 
91   ZeroDirective = "\t.space\t";
92   Data64bitsDirective = is64Bit ? "\t.quad\t" : 0;
93   AssemblerDialect = 1;           // New-Style mnemonics.
94 }
95 
96