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
diff --git a/lib/Target/PIC16/MCSectionPIC16.h b/lib/Target/PIC16/MCSectionPIC16.h
index 61850fc..3ae432e 100644
--- a/lib/Target/PIC16/MCSectionPIC16.h
+++ b/lib/Target/PIC16/MCSectionPIC16.h
@@ -18,20 +18,65 @@
namespace llvm {
+ /// MCSectionPIC16 - Represents a physical section in PIC16 COFF.
+ /// Contains data objects.
+ ///
class MCSectionPIC16 : public MCSection {
+ /// Name of the section to uniquely identify it.
std::string Name;
+
+ /// User can specify an address at which a section should be placed.
+ /// Negative value here means user hasn't specified any.
+ int Address;
+
+ /// FIXME: Keep overlay information here. uncomment the decl below.
+ /// Overlay information - Sections with same color can be overlaid on
+ /// one another.
+ /// std::string Color;
+
+ /// Conatined data objects.
+ std::vector<const GlobalVariable *>Items;
+
+ /// Total size of all data objects contained here.
+ unsigned Size;
- MCSectionPIC16(const StringRef &name, SectionKind K)
- : MCSection(K), Name(name) {
+ MCSectionPIC16(const StringRef &name, SectionKind K, int addr)
+ : MCSection(K), Name(name), Address(addr) {
}
public:
-
+ /// Return the name of the section.
const std::string &getName() const { return Name; }
+
+ /// Return the Address of the section.
+ int getAddress() const { return Address; }
+
+ /// PIC16 Terminology for section kinds is as below.
+ /// UDATA - BSS
+ /// IDATA - initialized data (equiv to Metadata)
+ /// ROMDATA - ReadOnly.
+ /// UDATA_OVR - Sections that can be overlaid. Section of such type is
+ /// used to contain function autos an frame. We can think of
+ /// it as equiv to llvm ThreadBSS)
+ /// So, let's have some convenience functions to Map PIC16 Section types
+ /// to SectionKind just for the sake of better readability.
+ static SectionKind UDATA_Kind() { return SectionKind::getBSS(); }
+ static SectionKind IDATA_Kind() { return SectionKind::getMetadata(); }
+ static SectionKind ROMDATA_Kind() { return SectionKind::getReadOnly(); }
+ static SectionKind UDATA_OVR_Kind() { return SectionKind::getThreadBSS(); }
+
+ // If we could just do getKind() == UDATA_Kind() ?
+ bool isUDATA_Kind() { return getKind().isBSS(); }
+ bool isIDATA_Kind() { return getKind().isMetadata(); }
+ bool isROMDATA_Kind() { return getKind().isMetadata(); }
+ bool isUDATA_OVR_Kind() { return getKind().isThreadBSS(); }
+
+ /// This would be the only way to create a section.
+ static MCSectionPIC16 *Create(const StringRef &Name, SectionKind K,
+ int Address, MCContext &Ctx);
- static MCSectionPIC16 *Create(const StringRef &Name,
- SectionKind K, MCContext &Ctx);
-
+ /// Override this as PIC16 has its own way of printing switching
+ /// to a section.
virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
raw_ostream &OS) const;
};