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d660a5d68c
This just adds the basic skeleton for supporting a new object file format. All of the actual encoding will be implemented in followup patches. Differential Revision: https://reviews.llvm.org/D26722 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295803 91177308-0d34-0410-b5e6-96231b3b80d8
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
//===-- WebAssemblyMCAsmInfo.cpp - WebAssembly asm properties -------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief This file contains the declarations of the WebAssemblyMCAsmInfo
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/// properties.
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///
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//===----------------------------------------------------------------------===//
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#include "WebAssemblyMCAsmInfo.h"
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#include "llvm/ADT/Triple.h"
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using namespace llvm;
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#define DEBUG_TYPE "wasm-mc-asm-info"
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WebAssemblyMCAsmInfoELF::~WebAssemblyMCAsmInfoELF() {}
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WebAssemblyMCAsmInfoELF::WebAssemblyMCAsmInfoELF(const Triple &T) {
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PointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
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// TODO: What should MaxInstLength be?
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UseDataRegionDirectives = true;
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// Use .skip instead of .zero because .zero is confusing when used with two
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// arguments (it doesn't actually zero things out).
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ZeroDirective = "\t.skip\t";
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Data8bitsDirective = "\t.int8\t";
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Data16bitsDirective = "\t.int16\t";
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Data32bitsDirective = "\t.int32\t";
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Data64bitsDirective = "\t.int64\t";
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AlignmentIsInBytes = false;
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COMMDirectiveAlignmentIsInBytes = false;
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LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
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SupportsDebugInformation = true;
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// For now, WebAssembly does not support exceptions.
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ExceptionsType = ExceptionHandling::None;
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// TODO: UseIntegratedAssembler?
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// WebAssembly's stack is never executable.
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UsesNonexecutableStackSection = false;
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}
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WebAssemblyMCAsmInfo::~WebAssemblyMCAsmInfo() {}
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WebAssemblyMCAsmInfo::WebAssemblyMCAsmInfo(const Triple &T) {
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PointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
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// TODO: What should MaxInstLength be?
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UseDataRegionDirectives = true;
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// Use .skip instead of .zero because .zero is confusing when used with two
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// arguments (it doesn't actually zero things out).
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ZeroDirective = "\t.skip\t";
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Data8bitsDirective = "\t.int8\t";
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Data16bitsDirective = "\t.int16\t";
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Data32bitsDirective = "\t.int32\t";
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Data64bitsDirective = "\t.int64\t";
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AlignmentIsInBytes = false;
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COMMDirectiveAlignmentIsInBytes = false;
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LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
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SupportsDebugInformation = true;
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// For now, WebAssembly does not support exceptions.
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ExceptionsType = ExceptionHandling::None;
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// TODO: UseIntegratedAssembler?
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}
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