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 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 = 0;      // 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 
43 void PPCLinuxMCAsmInfo::anchor() { }
44 
45 PPCLinuxMCAsmInfo::PPCLinuxMCAsmInfo(bool is64Bit) {
46   if (is64Bit) {
47     PointerSize = CalleeSaveStackSlotSize = 8;
48   }
49   IsLittleEndian = false;
50 
51   // ".comm align is in bytes but .align is pow-2."
52   AlignmentIsInBytes = false;
53 
54   CommentString = "#";
55 
56   // Uses '.section' before '.bss' directive
57   UsesELFSectionDirectiveForBSS = true;
58 
59   // Debug Information
60   SupportsDebugInformation = true;
61 
62   DollarIsPC = true;
63 
64   // Set up DWARF directives
65   HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
66   MinInstAlignment = 4;
67 
68   // Exceptions handling
69   ExceptionsType = ExceptionHandling::DwarfCFI;
70 
71   ZeroDirective = "\t.space\t";
72   Data64bitsDirective = is64Bit ? "\t.quad\t" : 0;
73   AssemblerDialect = 1;           // New-Style mnemonics.
74 }
75 
76