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Start refactoring PIC16 TargetObjectFile code. Eventually, all the stuff from
PIC16Section will move to MCSectionPIC16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80021 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -18,20 +18,65 @@
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namespace llvm {
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/// MCSectionPIC16 - Represents a physical section in PIC16 COFF.
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/// Contains data objects.
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///
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class MCSectionPIC16 : public MCSection {
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/// Name of the section to uniquely identify it.
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std::string Name;
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MCSectionPIC16(const StringRef &name, SectionKind K)
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: MCSection(K), Name(name) {
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/// User can specify an address at which a section should be placed.
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/// Negative value here means user hasn't specified any.
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int Address;
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/// FIXME: Keep overlay information here. uncomment the decl below.
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/// Overlay information - Sections with same color can be overlaid on
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/// one another.
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/// std::string Color;
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/// Conatined data objects.
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std::vector<const GlobalVariable *>Items;
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/// Total size of all data objects contained here.
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unsigned Size;
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MCSectionPIC16(const StringRef &name, SectionKind K, int addr)
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: MCSection(K), Name(name), Address(addr) {
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}
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public:
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/// Return the name of the section.
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const std::string &getName() const { return Name; }
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static MCSectionPIC16 *Create(const StringRef &Name,
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SectionKind K, MCContext &Ctx);
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/// Return the Address of the section.
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int getAddress() const { return Address; }
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/// PIC16 Terminology for section kinds is as below.
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/// UDATA - BSS
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/// IDATA - initialized data (equiv to Metadata)
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/// ROMDATA - ReadOnly.
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/// UDATA_OVR - Sections that can be overlaid. Section of such type is
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/// used to contain function autos an frame. We can think of
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/// it as equiv to llvm ThreadBSS)
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/// So, let's have some convenience functions to Map PIC16 Section types
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/// to SectionKind just for the sake of better readability.
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static SectionKind UDATA_Kind() { return SectionKind::getBSS(); }
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static SectionKind IDATA_Kind() { return SectionKind::getMetadata(); }
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static SectionKind ROMDATA_Kind() { return SectionKind::getReadOnly(); }
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static SectionKind UDATA_OVR_Kind() { return SectionKind::getThreadBSS(); }
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// If we could just do getKind() == UDATA_Kind() ?
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bool isUDATA_Kind() { return getKind().isBSS(); }
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bool isIDATA_Kind() { return getKind().isMetadata(); }
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bool isROMDATA_Kind() { return getKind().isMetadata(); }
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bool isUDATA_OVR_Kind() { return getKind().isThreadBSS(); }
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/// This would be the only way to create a section.
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static MCSectionPIC16 *Create(const StringRef &Name, SectionKind K,
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int Address, MCContext &Ctx);
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/// Override this as PIC16 has its own way of printing switching
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/// to a section.
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virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
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raw_ostream &OS) const;
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};
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@ -19,9 +19,9 @@
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using namespace llvm;
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MCSectionPIC16 *MCSectionPIC16::Create(const StringRef &Name,
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SectionKind K, MCContext &Ctx) {
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return new (Ctx) MCSectionPIC16(Name, K);
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MCSectionPIC16 *MCSectionPIC16::Create(const StringRef &Name, SectionKind K,
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int Address, MCContext &Ctx) {
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return new (Ctx) MCSectionPIC16(Name, K, Address);
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}
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@ -38,12 +38,12 @@ PIC16TargetObjectFile::PIC16TargetObjectFile()
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}
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const MCSectionPIC16 *PIC16TargetObjectFile::
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getPIC16Section(const char *Name, SectionKind Kind) const {
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getPIC16Section(const char *Name, SectionKind Kind, int Address) const {
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MCSectionPIC16 *&Entry = SectionsByName[Name];
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if (Entry)
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return Entry;
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return Entry = MCSectionPIC16::Create(Name, Kind, getContext());
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return Entry = MCSectionPIC16::Create(Name, Kind, Address, getContext());
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}
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@ -53,7 +53,8 @@ namespace llvm {
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const TargetMachine *TM;
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const MCSectionPIC16 *getPIC16Section(const char *Name,
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SectionKind K) const;
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SectionKind K,
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int Address = -1) const;
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public:
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mutable std::vector<PIC16Section*> BSSSections;
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mutable std::vector<PIC16Section*> IDATASections;
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