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/TargetParser/Triple.h"
18
19using namespace llvm;
20
21#define DEBUG_TYPE "wasm-mc-asm-info"
22
23WebAssemblyMCAsmInfo::~WebAssemblyMCAsmInfo() = default; // anchor.
24
25WebAssemblyMCAsmInfo::WebAssemblyMCAsmInfo(const Triple &T,
26 const MCTargetOptions &Options) {
27 CodePointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
28
29 // TODO: What should MaxInstLength be?
30
31 UseDataRegionDirectives = true;
32
33 // Use .skip instead of .zero because .zero is confusing when used with two
34 // arguments (it doesn't actually zero things out).
35 ZeroDirective = "\t.skip\t";
36
37 Data8bitsDirective = "\t.int8\t";
38 Data16bitsDirective = "\t.int16\t";
39 Data32bitsDirective = "\t.int32\t";
40 Data64bitsDirective = "\t.int64\t";
41
42 AlignmentIsInBytes = false;
43 COMMDirectiveAlignmentIsInBytes = false;
44 LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
45
46 SupportsDebugInformation = true;
47
48 // When compilation is done on a cpp file by clang, the exception model info
49 // is stored in LangOptions, which is later used to set the info in
50 // TargetOptions and then MCAsmInfo in LLVMTargetMachine::initAsmInfo(). But
51 // this process does not happen when compiling bitcode directly with clang, so
52 // we make sure this info is set correctly.
53 if (WebAssembly::WasmEnableEH || WebAssembly::WasmEnableSjLj)
54 ExceptionsType = ExceptionHandling::Wasm;
55}
56