llvm-6502/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
Joerg Sonnenberger 2ecdcdc026 Allow using normal .eh_frame based unwinding on ARM. Use the same
encodings as x86. Use this exception model for NetBSD.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208166 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-07 07:49:34 +00:00

115 lines
2.9 KiB
C++

//===-- ARMMCAsmInfo.cpp - ARM asm properties -----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the declarations of the ARMMCAsmInfo properties.
//
//===----------------------------------------------------------------------===//
#include "ARMMCAsmInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/ADT/Triple.h"
using namespace llvm;
void ARMMCAsmInfoDarwin::anchor() { }
ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin(StringRef TT) {
Triple TheTriple(TT);
if ((TheTriple.getArch() == Triple::armeb) ||
(TheTriple.getArch() == Triple::thumbeb))
IsLittleEndian = false;
Data64bitsDirective = nullptr;
CommentString = "@";
Code16Directive = ".code\t16";
Code32Directive = ".code\t32";
UseDataRegionDirectives = true;
SupportsDebugInformation = true;
// Exceptions handling
ExceptionsType = ExceptionHandling::SjLj;
UseIntegratedAssembler = true;
}
void ARMELFMCAsmInfo::anchor() { }
ARMELFMCAsmInfo::ARMELFMCAsmInfo(StringRef TT) {
Triple TheTriple(TT);
if ((TheTriple.getArch() == Triple::armeb) ||
(TheTriple.getArch() == Triple::thumbeb))
IsLittleEndian = false;
// ".comm align is in bytes but .align is pow-2."
AlignmentIsInBytes = false;
Data64bitsDirective = nullptr;
CommentString = "@";
Code16Directive = ".code\t16";
Code32Directive = ".code\t32";
HasLEB128 = true;
SupportsDebugInformation = true;
// Exceptions handling
switch (TheTriple.getOS()) {
case Triple::NetBSD:
ExceptionsType = ExceptionHandling::DwarfCFI;
break;
default:
ExceptionsType = ExceptionHandling::ARM;
break;
}
// foo(plt) instead of foo@plt
UseParensForSymbolVariant = true;
UseIntegratedAssembler = true;
}
void ARMELFMCAsmInfo::setUseIntegratedAssembler(bool Value) {
UseIntegratedAssembler = Value;
if (!UseIntegratedAssembler) {
// gas doesn't handle VFP register names in cfi directives,
// so don't use register names with external assembler.
// See https://sourceware.org/bugzilla/show_bug.cgi?id=16694
DwarfRegNumForCFI = true;
}
}
void ARMCOFFMCAsmInfoMicrosoft::anchor() { }
ARMCOFFMCAsmInfoMicrosoft::ARMCOFFMCAsmInfoMicrosoft() {
AlignmentIsInBytes = false;
PrivateGlobalPrefix = "$M";
}
void ARMCOFFMCAsmInfoGNU::anchor() { }
ARMCOFFMCAsmInfoGNU::ARMCOFFMCAsmInfoGNU() {
AlignmentIsInBytes = false;
HasSingleParameterDotFile = true;
CommentString = "@";
Code16Directive = ".code\t16";
Code32Directive = ".code\t32";
PrivateGlobalPrefix = ".L";
HasLEB128 = true;
SupportsDebugInformation = true;
ExceptionsType = ExceptionHandling::None;
UseParensForSymbolVariant = true;
UseIntegratedAssembler = false;
DwarfRegNumForCFI = true;
}