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ca668acee6
Summary:
Many directives are unavailable, and support for others may be limited.
This first draft has preliminary support for:
- conditional directives (including errors),
- data allocation (unsigned types up to 8 bytes, and ALIGN),
- equates/variables (numeric and text),
- and procedure directives (without parameters),
as well as COMMENT, ECHO, INCLUDE, INCLUDELIB, PUBLIC, and EXTERN. Text variables (aka text macros) are expanded in-place wherever the identifier occurs.
We deliberately ignore all ml.exe processor directives.
Prominent features not yet supported:
- structs
- macros (both procedures and functions)
- procedures (with specified parameters)
- substitution & expansion operators
Conditional directives are complicated by the fact that "ifdef rax" is a valid way to check if a file is being assembled for a 64-bit x86 processor; we add support for "ifdef <register>" in general, which requires adding a tryParseRegister method to all MCTargetAsmParsers. (Some targets require backtracking in the non-register case.)
Reviewers: rnk, thakis
Reviewed By: thakis
Subscribers: kerbowa, merge_guards_bot, wuzish, arsenm, dschuff, jyknight, dylanmckay, sdardis, nemanjai, jvesely, mgorny, sbc100, jgravelle-google, hiraditya, aheejin, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, MaskRay, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, jsji, Jim, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72680
82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
//===- MCTargetOptions.h - MC Target Options --------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCTARGETOPTIONS_H
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#define LLVM_MC_MCTARGETOPTIONS_H
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#include <string>
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#include <vector>
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namespace llvm {
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enum class ExceptionHandling {
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None, ///< No exception support
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DwarfCFI, ///< DWARF-like instruction based exceptions
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SjLj, ///< setjmp/longjmp based exceptions
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ARM, ///< ARM EHABI
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WinEH, ///< Windows Exception Handling
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Wasm, ///< WebAssembly Exception Handling
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};
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enum class DebugCompressionType {
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None, ///< No compression
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GNU, ///< zlib-gnu style compression
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Z, ///< zlib style complession
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};
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class StringRef;
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class MCTargetOptions {
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public:
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enum AsmInstrumentation {
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AsmInstrumentationNone,
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AsmInstrumentationAddress
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};
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bool MCRelaxAll : 1;
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bool MCNoExecStack : 1;
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bool MCFatalWarnings : 1;
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bool MCNoWarn : 1;
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bool MCNoDeprecatedWarn : 1;
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bool MCSaveTempLabels : 1;
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bool MCUseDwarfDirectory : 1;
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bool MCIncrementalLinkerCompatible : 1;
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bool ShowMCEncoding : 1;
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bool ShowMCInst : 1;
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bool AsmVerbose : 1;
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/// Preserve Comments in Assembly.
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bool PreserveAsmComments : 1;
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int DwarfVersion = 0;
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std::string ABIName;
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std::string AssemblyLanguage;
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std::string SplitDwarfFile;
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/// Additional paths to search for `.include` directives when using the
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/// integrated assembler.
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std::vector<std::string> IASSearchPaths;
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MCTargetOptions();
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/// getABIName - If this returns a non-empty string this represents the
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/// textual name of the ABI that we want the backend to use, e.g. o32, or
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/// aapcs-linux.
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StringRef getABIName() const;
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/// getAssemblyLanguage - If this returns a non-empty string this represents
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/// the textual name of the assembly language that we will use for this
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/// target, e.g. masm.
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StringRef getAssemblyLanguage() const;
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};
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} // end namespace llvm
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#endif // LLVM_MC_MCTARGETOPTIONS_H
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