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/ADT/Enum.h"
18#include "llvm/MC/MCExpr.h"
19#include "llvm/TargetParser/Triple.h"
20
21using namespace llvm;
22
23#define DEBUG_TYPE "wasm-mc-asm-info"
24
25constexpr EnumStringDef<MCAsmInfo::AtSpecifierKind> AtSpecifierDefs[] = {
26 {.Names: {"TYPEINDEX"}, .Value: WebAssembly::S_TYPEINDEX},
27 {.Names: {"TBREL"}, .Value: WebAssembly::S_TBREL},
28 {.Names: {"MBREL"}, .Value: WebAssembly::S_MBREL},
29 {.Names: {"TLSREL"}, .Value: WebAssembly::S_TLSREL},
30 {.Names: {"GOT"}, .Value: WebAssembly::S_GOT},
31 {.Names: {"GOT@TLS"}, .Value: WebAssembly::S_GOT_TLS},
32 {.Names: {"FUNCINDEX"}, .Value: WebAssembly::S_FUNCINDEX},
33};
34constexpr auto atSpecifiers = BUILD_ENUM_STRINGS(AtSpecifierDefs);
35
36WebAssemblyMCAsmInfo::~WebAssemblyMCAsmInfo() = default; // anchor.
37
38WebAssemblyMCAsmInfo::WebAssemblyMCAsmInfo(const Triple &T,
39 const MCTargetOptions &Options)
40 : MCAsmInfoWasm(Options) {
41 CodePointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
42
43 // TODO: What should MaxInstLength be?
44
45 UseDataRegionDirectives = true;
46
47 // Use .skip instead of .zero because .zero is confusing when used with two
48 // arguments (it doesn't actually zero things out).
49 ZeroDirective = "\t.skip\t";
50
51 Data8bitsDirective = "\t.int8\t";
52 Data16bitsDirective = "\t.int16\t";
53 Data32bitsDirective = "\t.int32\t";
54 Data64bitsDirective = "\t.int64\t";
55
56 AlignmentIsInBytes = false;
57 COMMDirectiveAlignmentIsInBytes = false;
58 LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
59
60 SupportsDebugInformation = true;
61 ExceptionsType = ExceptionHandling::None;
62
63 initializeAtSpecifiers(atSpecifiers);
64}
65