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c15ac98803
Currently, for ARMCOFFMCAsmInfoMicrosoft, no comment character is set, thus the idefault, '#', is used. The hash character doesn't work as comment character in ARM assembly, since '#' is used for immediate values. The comment character is set to ';', which is the comment character used by MS armasm.exe. (The microsoft armasm.exe uses a different directive syntax than what LLVM currently supports though, similar to ARM's armasm.) This allows inline assembly with immediate constants to be built (and brings the assembly output from clang -S closer to being possible to assemble). A test is added that verifies that ';' is correctly interpreted as comments in this mode, and verifies that assembling code that includes literal constants with a '#' works. Patch by Martin Storsjö. llvm-svn: 276859
116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
//===-- ARMMCAsmInfo.cpp - ARM 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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// This file contains the declarations of the ARMMCAsmInfo properties.
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//
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//===----------------------------------------------------------------------===//
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#include "ARMMCAsmInfo.h"
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#include "llvm/ADT/Triple.h"
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using namespace llvm;
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void ARMMCAsmInfoDarwin::anchor() { }
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ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin(const Triple &TheTriple) {
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if ((TheTriple.getArch() == Triple::armeb) ||
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(TheTriple.getArch() == Triple::thumbeb))
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IsLittleEndian = false;
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Data64bitsDirective = nullptr;
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CommentString = "@";
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Code16Directive = ".code\t16";
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Code32Directive = ".code\t32";
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UseDataRegionDirectives = true;
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SupportsDebugInformation = true;
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// Exceptions handling
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ExceptionsType = (TheTriple.isOSDarwin() && !TheTriple.isWatchABI())
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? ExceptionHandling::SjLj
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: ExceptionHandling::DwarfCFI;
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UseIntegratedAssembler = true;
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}
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void ARMELFMCAsmInfo::anchor() { }
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ARMELFMCAsmInfo::ARMELFMCAsmInfo(const Triple &TheTriple) {
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if ((TheTriple.getArch() == Triple::armeb) ||
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(TheTriple.getArch() == Triple::thumbeb))
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IsLittleEndian = false;
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// ".comm align is in bytes but .align is pow-2."
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AlignmentIsInBytes = false;
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Data64bitsDirective = nullptr;
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CommentString = "@";
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Code16Directive = ".code\t16";
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Code32Directive = ".code\t32";
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SupportsDebugInformation = true;
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// Exceptions handling
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switch (TheTriple.getOS()) {
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case Triple::Bitrig:
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case Triple::NetBSD:
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ExceptionsType = ExceptionHandling::DwarfCFI;
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break;
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default:
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ExceptionsType = ExceptionHandling::ARM;
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break;
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}
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// foo(plt) instead of foo@plt
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UseParensForSymbolVariant = true;
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UseIntegratedAssembler = true;
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}
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void ARMELFMCAsmInfo::setUseIntegratedAssembler(bool Value) {
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UseIntegratedAssembler = Value;
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if (!UseIntegratedAssembler) {
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// gas doesn't handle VFP register names in cfi directives,
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// so don't use register names with external assembler.
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// See https://sourceware.org/bugzilla/show_bug.cgi?id=16694
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DwarfRegNumForCFI = true;
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}
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}
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void ARMCOFFMCAsmInfoMicrosoft::anchor() { }
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ARMCOFFMCAsmInfoMicrosoft::ARMCOFFMCAsmInfoMicrosoft() {
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AlignmentIsInBytes = false;
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PrivateGlobalPrefix = "$M";
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PrivateLabelPrefix = "$M";
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CommentString = ";";
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}
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void ARMCOFFMCAsmInfoGNU::anchor() { }
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ARMCOFFMCAsmInfoGNU::ARMCOFFMCAsmInfoGNU() {
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AlignmentIsInBytes = false;
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HasSingleParameterDotFile = true;
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CommentString = "@";
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Code16Directive = ".code\t16";
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Code32Directive = ".code\t32";
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PrivateGlobalPrefix = ".L";
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PrivateLabelPrefix = ".L";
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SupportsDebugInformation = true;
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ExceptionsType = ExceptionHandling::None;
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UseParensForSymbolVariant = true;
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UseIntegratedAssembler = false;
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DwarfRegNumForCFI = true;
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}
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