1 //===-- WebAssemblyMCAsmInfo.cpp - WebAssembly 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 /// \file
11 /// \brief This file contains the declarations of the WebAssemblyMCAsmInfo
12 /// properties.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 #include "WebAssemblyMCAsmInfo.h"
17 #include "llvm/ADT/Triple.h"
18 using namespace llvm;
19 
20 #define DEBUG_TYPE "wasm-mc-asm-info"
21 
22 WebAssemblyMCAsmInfoELF::~WebAssemblyMCAsmInfoELF() {}
23 
24 WebAssemblyMCAsmInfoELF::WebAssemblyMCAsmInfoELF(const Triple &T) {
25   CodePointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
26 
27   // TODO: What should MaxInstLength be?
28 
29   UseDataRegionDirectives = true;
30 
31   // Use .skip instead of .zero because .zero is confusing when used with two
32   // arguments (it doesn't actually zero things out).
33   ZeroDirective = "\t.skip\t";
34 
35   Data8bitsDirective = "\t.int8\t";
36   Data16bitsDirective = "\t.int16\t";
37   Data32bitsDirective = "\t.int32\t";
38   Data64bitsDirective = "\t.int64\t";
39 
40   AlignmentIsInBytes = false;
41   COMMDirectiveAlignmentIsInBytes = false;
42   LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
43 
44   SupportsDebugInformation = true;
45 
46   // TODO: UseIntegratedAssembler?
47 
48   // WebAssembly's stack is never executable.
49   UsesNonexecutableStackSection = false;
50 }
51 
52 WebAssemblyMCAsmInfo::~WebAssemblyMCAsmInfo() {}
53 
54 WebAssemblyMCAsmInfo::WebAssemblyMCAsmInfo(const Triple &T) {
55   CodePointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
56 
57   // TODO: What should MaxInstLength be?
58 
59   UseDataRegionDirectives = true;
60 
61   // Use .skip instead of .zero because .zero is confusing when used with two
62   // arguments (it doesn't actually zero things out).
63   ZeroDirective = "\t.skip\t";
64 
65   Data8bitsDirective = "\t.int8\t";
66   Data16bitsDirective = "\t.int16\t";
67   Data32bitsDirective = "\t.int32\t";
68   Data64bitsDirective = "\t.int64\t";
69 
70   AlignmentIsInBytes = false;
71   COMMDirectiveAlignmentIsInBytes = false;
72   LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
73 
74   SupportsDebugInformation = true;
75 
76   // TODO: UseIntegratedAssembler?
77 }
78