1 //===-- WebAssemblyMCAsmInfo.cpp - WebAssembly asm properties -------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 ///
9 /// \file
10 /// This file contains the declarations of the WebAssemblyMCAsmInfo
11 /// properties.
12 ///
13 //===----------------------------------------------------------------------===//
14
15 #include "WebAssemblyMCAsmInfo.h"
16 #include "WebAssemblyMCTargetDesc.h"
17 #include "llvm/MC/MCExpr.h"
18 #include "llvm/TargetParser/Triple.h"
19
20 using namespace llvm;
21
22 #define DEBUG_TYPE "wasm-mc-asm-info"
23
24 const MCAsmInfo::AtSpecifier atSpecifiers[] = {
25 {WebAssembly::S_TYPEINDEX, "TYPEINDEX"},
26 {WebAssembly::S_TBREL, "TBREL"},
27 {WebAssembly::S_MBREL, "MBREL"},
28 {WebAssembly::S_TLSREL, "TLSREL"},
29 {WebAssembly::S_GOT, "GOT"},
30 {WebAssembly::S_GOT_TLS, "GOT@TLS"},
31 {WebAssembly::S_FUNCINDEX, "FUNCINDEX"},
32 };
33
34 WebAssemblyMCAsmInfo::~WebAssemblyMCAsmInfo() = default; // anchor.
35
WebAssemblyMCAsmInfo(const Triple & T,const MCTargetOptions & Options)36 WebAssemblyMCAsmInfo::WebAssemblyMCAsmInfo(const Triple &T,
37 const MCTargetOptions &Options) {
38 CodePointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
39
40 // TODO: What should MaxInstLength be?
41
42 UseDataRegionDirectives = true;
43
44 // Use .skip instead of .zero because .zero is confusing when used with two
45 // arguments (it doesn't actually zero things out).
46 ZeroDirective = "\t.skip\t";
47
48 Data8bitsDirective = "\t.int8\t";
49 Data16bitsDirective = "\t.int16\t";
50 Data32bitsDirective = "\t.int32\t";
51 Data64bitsDirective = "\t.int64\t";
52
53 AlignmentIsInBytes = false;
54 COMMDirectiveAlignmentIsInBytes = false;
55 LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
56
57 SupportsDebugInformation = true;
58 ExceptionsType = ExceptionHandling::None;
59
60 initializeAtSpecifiers(atSpecifiers);
61 }
62