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99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
//===-- MipsTargetAsmInfo.cpp - Mips asm properties -------------*- C++ -*-===//
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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 MipsTargetAsmInfo properties.
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//
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//===----------------------------------------------------------------------===//
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#include "MipsTargetAsmInfo.h"
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#include "MipsTargetMachine.h"
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#include "llvm/GlobalVariable.h"
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using namespace llvm;
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MipsTargetAsmInfo::MipsTargetAsmInfo(const MipsTargetMachine &TM):
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ELFTargetAsmInfo(TM) {
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Subtarget = &TM.getSubtarget<MipsSubtarget>();
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AlignmentIsInBytes = false;
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COMMDirectiveTakesAlignment = true;
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Data16bitsDirective = "\t.half\t";
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Data32bitsDirective = "\t.word\t";
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Data64bitsDirective = NULL;
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PrivateGlobalPrefix = "$";
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JumpTableDataSection = "\t.rdata";
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CommentString = "#";
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ZeroDirective = "\t.space\t";
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BSSSection = "\t.section\t.bss";
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CStringSection = ".rodata.str";
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if (!Subtarget->hasABICall()) {
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JumpTableDirective = "\t.word\t";
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SmallDataSection = getNamedSection("\t.sdata", SectionFlags::Writeable);
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SmallBSSSection = getNamedSection("\t.sbss",
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SectionFlags::Writeable |
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SectionFlags::BSS);
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} else
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JumpTableDirective = "\t.gpword\t";
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}
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unsigned MipsTargetAsmInfo::
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SectionFlagsForGlobal(const GlobalValue *GV, const char* Name) const {
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unsigned Flags = ELFTargetAsmInfo::SectionFlagsForGlobal(GV, Name);
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// Mask out Small Section flag bit, Mips doesnt support 's' section symbol
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// for its small sections.
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return (Flags & (~SectionFlags::Small));
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}
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SectionKind::Kind MipsTargetAsmInfo::
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SectionKindForGlobal(const GlobalValue *GV) const {
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SectionKind::Kind K = ELFTargetAsmInfo::SectionKindForGlobal(GV);
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if (Subtarget->hasABICall())
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return K;
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if (K != SectionKind::Data && K != SectionKind::BSS &&
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K != SectionKind::RODataMergeConst)
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return K;
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if (isa<GlobalVariable>(GV)) {
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const TargetData *TD = ETM->getTargetData();
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unsigned Size = TD->getABITypeSize(GV->getType()->getElementType());
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unsigned Threshold = Subtarget->getSSectionThreshold();
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if (Size > 0 && Size <= Threshold) {
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if (K == SectionKind::BSS)
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return SectionKind::SmallBSS;
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else
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return SectionKind::SmallData;
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}
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}
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return K;
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}
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const Section* MipsTargetAsmInfo::
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SelectSectionForGlobal(const GlobalValue *GV) const {
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SectionKind::Kind K = SectionKindForGlobal(GV);
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const GlobalVariable *GVA = dyn_cast<GlobalVariable>(GV);
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if (GVA && (!GVA->mayBeOverridden()))
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switch (K) {
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case SectionKind::SmallData:
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return getSmallDataSection();
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case SectionKind::SmallBSS:
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return getSmallBSSSection();
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default: break;
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}
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return ELFTargetAsmInfo::SelectSectionForGlobal(GV);
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}
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