Check in LLVM r95781.
diff --git a/lib/Target/PIC16/PIC16TargetObjectFile.cpp b/lib/Target/PIC16/PIC16TargetObjectFile.cpp
new file mode 100644
index 0000000..d7cfe02
--- /dev/null
+++ b/lib/Target/PIC16/PIC16TargetObjectFile.cpp
@@ -0,0 +1,381 @@
+//===-- PIC16TargetObjectFile.cpp - PIC16 object files --------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PIC16TargetObjectFile.h"
+#include "PIC16ISelLowering.h"
+#include "PIC16TargetMachine.h"
+#include "PIC16Section.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Module.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+
+PIC16TargetObjectFile::PIC16TargetObjectFile() {
+}
+
+PIC16TargetObjectFile::~PIC16TargetObjectFile() {
+}
+
+/// Find a pic16 section. Return null if not found. Do not create one.
+PIC16Section *PIC16TargetObjectFile::
+findPIC16Section(const std::string &Name) {
+ /// Return if we have an already existing one.
+ PIC16Section *Entry = SectionsByName[Name];
+ if (Entry)
+ return Entry;
+
+ return NULL;
+}
+
+
+/// Find a pic16 section. If not found, create one.
+PIC16Section *PIC16TargetObjectFile::
+getPIC16Section(const std::string &Name, PIC16SectionType Ty,
+ const std::string &Address, int Color) const {
+
+ /// Return if we have an already existing one.
+ PIC16Section *&Entry = SectionsByName[Name];
+ if (Entry)
+ return Entry;
+
+
+ Entry = PIC16Section::Create(Name, Ty, Address, Color, getContext());
+ return Entry;
+}
+
+/// Find a standard pic16 data section. If not found, create one and keep
+/// track of it by adding it to appropriate std section list.
+PIC16Section *PIC16TargetObjectFile::
+getPIC16DataSection(const std::string &Name, PIC16SectionType Ty,
+ const std::string &Address, int Color) const {
+
+ /// Return if we have an already existing one.
+ PIC16Section *&Entry = SectionsByName[Name];
+ if (Entry)
+ return Entry;
+
+
+ /// Else create a new one and add it to appropriate section list.
+ Entry = PIC16Section::Create(Name, Ty, Address, Color, getContext());
+
+ switch (Ty) {
+ default: llvm_unreachable ("unknow standard section type.");
+ case UDATA: UDATASections_.push_back(Entry); break;
+ case IDATA: IDATASections_.push_back(Entry); break;
+ case ROMDATA: ROMDATASection_ = Entry; break;
+ case UDATA_SHR: SHAREDUDATASection_ = Entry; break;
+ }
+
+ return Entry;
+}
+
+
+/// Find a standard pic16 autos section. If not found, create one and keep
+/// track of it by adding it to appropriate std section list.
+PIC16Section *PIC16TargetObjectFile::
+getPIC16AutoSection(const std::string &Name, PIC16SectionType Ty,
+ const std::string &Address, int Color) const {
+
+ /// Return if we have an already existing one.
+ PIC16Section *&Entry = SectionsByName[Name];
+ if (Entry)
+ return Entry;
+
+
+ /// Else create a new one and add it to appropriate section list.
+ Entry = PIC16Section::Create(Name, Ty, Address, Color, getContext());
+
+ assert (Ty == UDATA_OVR && "incorrect section type for autos");
+ AUTOSections_.push_back(Entry);
+
+ return Entry;
+}
+
+/// Find a pic16 user section. If not found, create one and keep
+/// track of it by adding it to appropriate std section list.
+PIC16Section *PIC16TargetObjectFile::
+getPIC16UserSection(const std::string &Name, PIC16SectionType Ty,
+ const std::string &Address, int Color) const {
+
+ /// Return if we have an already existing one.
+ PIC16Section *&Entry = SectionsByName[Name];
+ if (Entry)
+ return Entry;
+
+
+ /// Else create a new one and add it to appropriate section list.
+ Entry = PIC16Section::Create(Name, Ty, Address, Color, getContext());
+
+ USERSections_.push_back(Entry);
+
+ return Entry;
+}
+
+/// Do some standard initialization.
+void PIC16TargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &tm){
+ TargetLoweringObjectFile::Initialize(Ctx, tm);
+ TM = &tm;
+
+ ROMDATASection_ = NULL;
+ SHAREDUDATASection_ = NULL;
+}
+
+/// allocateUDATA - Allocate a un-initialized global to an existing or new UDATA
+/// section and return that section.
+const MCSection *
+PIC16TargetObjectFile::allocateUDATA(const GlobalVariable *GV) const {
+ assert(GV->hasInitializer() && "This global doesn't need space");
+ Constant *C = GV->getInitializer();
+ assert(C->isNullValue() && "Unitialized globals has non-zero initializer");
+
+ // Find how much space this global needs.
+ const TargetData *TD = TM->getTargetData();
+ const Type *Ty = C->getType();
+ unsigned ValSize = TD->getTypeAllocSize(Ty);
+
+ // Go through all UDATA Sections and assign this variable
+ // to the first available section having enough space.
+ PIC16Section *Found = NULL;
+ for (unsigned i = 0; i < UDATASections_.size(); i++) {
+ if (DataBankSize - UDATASections_[i]->getSize() >= ValSize) {
+ Found = UDATASections_[i];
+ break;
+ }
+ }
+
+ // No UDATA section spacious enough was found. Crate a new one.
+ if (!Found) {
+ std::string name = PAN::getUdataSectionName(UDATASections_.size());
+ Found = getPIC16DataSection(name.c_str(), UDATA);
+ }
+
+ // Insert the GV into this UDATA section.
+ Found->Items.push_back(GV);
+ Found->setSize(Found->getSize() + ValSize);
+ return Found;
+}
+
+/// allocateIDATA - allocate an initialized global into an existing
+/// or new section and return that section.
+const MCSection *
+PIC16TargetObjectFile::allocateIDATA(const GlobalVariable *GV) const{
+ assert(GV->hasInitializer() && "This global doesn't need space");
+ Constant *C = GV->getInitializer();
+ assert(!C->isNullValue() && "initialized globals has zero initializer");
+ assert(GV->getType()->getAddressSpace() == PIC16ISD::RAM_SPACE &&
+ "can allocate initialized RAM data only");
+
+ // Find how much space this global needs.
+ const TargetData *TD = TM->getTargetData();
+ const Type *Ty = C->getType();
+ unsigned ValSize = TD->getTypeAllocSize(Ty);
+
+ // Go through all IDATA Sections and assign this variable
+ // to the first available section having enough space.
+ PIC16Section *Found = NULL;
+ for (unsigned i = 0; i < IDATASections_.size(); i++) {
+ if (DataBankSize - IDATASections_[i]->getSize() >= ValSize) {
+ Found = IDATASections_[i];
+ break;
+ }
+ }
+
+ // No IDATA section spacious enough was found. Crate a new one.
+ if (!Found) {
+ std::string name = PAN::getIdataSectionName(IDATASections_.size());
+ Found = getPIC16DataSection(name.c_str(), IDATA);
+ }
+
+ // Insert the GV into this IDATA.
+ Found->Items.push_back(GV);
+ Found->setSize(Found->getSize() + ValSize);
+ return Found;
+}
+
+// Allocate a program memory variable into ROMDATA section.
+const MCSection *
+PIC16TargetObjectFile::allocateROMDATA(const GlobalVariable *GV) const {
+
+ std::string name = PAN::getRomdataSectionName();
+ PIC16Section *S = getPIC16DataSection(name.c_str(), ROMDATA);
+
+ S->Items.push_back(GV);
+ return S;
+}
+
+// Get the section for an automatic variable of a function.
+// For PIC16 they are globals only with mangled names.
+const MCSection *
+PIC16TargetObjectFile::allocateAUTO(const GlobalVariable *GV) const {
+
+ const std::string name = PAN::getSectionNameForSym(GV->getName());
+ PIC16Section *S = getPIC16AutoSection(name.c_str());
+
+ S->Items.push_back(GV);
+ return S;
+}
+
+
+// Override default implementation to put the true globals into
+// multiple data sections if required.
+const MCSection *
+PIC16TargetObjectFile::SelectSectionForGlobal(const GlobalValue *GV1,
+ SectionKind Kind,
+ Mangler *Mang,
+ const TargetMachine &TM) const {
+ // We select the section based on the initializer here, so it really
+ // has to be a GlobalVariable.
+ const GlobalVariable *GV = dyn_cast<GlobalVariable>(GV1);
+ if (!GV)
+ return TargetLoweringObjectFile::SelectSectionForGlobal(GV1, Kind, Mang,TM);
+
+ assert(GV->hasInitializer() && "A def without initializer?");
+
+ // First, if this is an automatic variable for a function, get the section
+ // name for it and return.
+ std::string name = GV->getName();
+ if (PAN::isLocalName(name))
+ return allocateAUTO(GV);
+
+ // See if this is an uninitialized global.
+ const Constant *C = GV->getInitializer();
+ if (C->isNullValue())
+ return allocateUDATA(GV);
+
+ // If this is initialized data in RAM. Put it in the correct IDATA section.
+ if (GV->getType()->getAddressSpace() == PIC16ISD::RAM_SPACE)
+ return allocateIDATA(GV);
+
+ // This is initialized data in rom, put it in the readonly section.
+ if (GV->getType()->getAddressSpace() == PIC16ISD::ROM_SPACE)
+ return allocateROMDATA(GV);
+
+ // Else let the default implementation take care of it.
+ return TargetLoweringObjectFile::SelectSectionForGlobal(GV, Kind, Mang,TM);
+}
+
+
+
+
+/// getExplicitSectionGlobal - Allow the target to completely override
+/// section assignment of a global.
+const MCSection *PIC16TargetObjectFile::
+getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
+ Mangler *Mang, const TargetMachine &TM) const {
+ assert(GV->hasSection());
+
+ if (const GlobalVariable *GVar = cast<GlobalVariable>(GV)) {
+ std::string SectName = GVar->getSection();
+ // If address for a variable is specified, get the address and create
+ // section.
+ // FIXME: move this attribute checking in PAN.
+ std::string AddrStr = "Address=";
+ if (SectName.compare(0, AddrStr.length(), AddrStr) == 0) {
+ std::string SectAddr = SectName.substr(AddrStr.length());
+ if (SectAddr.compare("NEAR") == 0)
+ return allocateSHARED(GVar, Mang);
+ else
+ return allocateAtGivenAddress(GVar, SectAddr);
+ }
+
+ // Create the section specified with section attribute.
+ return allocateInGivenSection(GVar);
+ }
+
+ return getPIC16DataSection(GV->getSection().c_str(), UDATA);
+}
+
+const MCSection *
+PIC16TargetObjectFile::allocateSHARED(const GlobalVariable *GV,
+ Mangler *Mang) const {
+ // Make sure that this is an uninitialized global.
+ assert(GV->hasInitializer() && "This global doesn't need space");
+ if (!GV->getInitializer()->isNullValue()) {
+ // FIXME: Generate a warning in this case that near qualifier will be
+ // ignored.
+ return SelectSectionForGlobal(GV, SectionKind::getDataRel(), Mang, *TM);
+ }
+ std::string Name = PAN::getSharedUDataSectionName();
+
+ PIC16Section *SharedUDataSect = getPIC16DataSection(Name.c_str(), UDATA_SHR);
+ // Insert the GV into shared section.
+ SharedUDataSect->Items.push_back(GV);
+ return SharedUDataSect;
+}
+
+
+// Interface used by AsmPrinter to get a code section for a function.
+const PIC16Section *
+PIC16TargetObjectFile::SectionForCode(const std::string &FnName) const {
+ const std::string &sec_name = PAN::getCodeSectionName(FnName);
+ return getPIC16Section(sec_name, CODE);
+}
+
+// Interface used by AsmPrinter to get a frame section for a function.
+const PIC16Section *
+PIC16TargetObjectFile::SectionForFrame(const std::string &FnName) const {
+ const std::string &sec_name = PAN::getFrameSectionName(FnName);
+ return getPIC16Section(sec_name, UDATA_OVR);
+}
+
+// Allocate a global var in existing or new section of given name.
+const MCSection *
+PIC16TargetObjectFile::allocateInGivenSection(const GlobalVariable *GV) const {
+ // Determine the type of section that we need to create.
+ PIC16SectionType SecTy;
+
+ // See if this is an uninitialized global.
+ const Constant *C = GV->getInitializer();
+ if (C->isNullValue())
+ SecTy = UDATA;
+ // If this is initialized data in RAM. Put it in the correct IDATA section.
+ else if (GV->getType()->getAddressSpace() == PIC16ISD::RAM_SPACE)
+ SecTy = IDATA;
+ // This is initialized data in rom, put it in the readonly section.
+ else if (GV->getType()->getAddressSpace() == PIC16ISD::ROM_SPACE)
+ SecTy = ROMDATA;
+ else
+ llvm_unreachable ("Could not determine section type for global");
+
+ PIC16Section *S = getPIC16UserSection(GV->getSection().c_str(), SecTy);
+ S->Items.push_back(GV);
+ return S;
+}
+
+// Allocate a global var in a new absolute sections at given address.
+const MCSection *
+PIC16TargetObjectFile::allocateAtGivenAddress(const GlobalVariable *GV,
+ const std::string &Addr) const {
+ // Determine the type of section that we need to create.
+ PIC16SectionType SecTy;
+
+ // See if this is an uninitialized global.
+ const Constant *C = GV->getInitializer();
+ if (C->isNullValue())
+ SecTy = UDATA;
+ // If this is initialized data in RAM. Put it in the correct IDATA section.
+ else if (GV->getType()->getAddressSpace() == PIC16ISD::RAM_SPACE)
+ SecTy = IDATA;
+ // This is initialized data in rom, put it in the readonly section.
+ else if (GV->getType()->getAddressSpace() == PIC16ISD::ROM_SPACE)
+ SecTy = ROMDATA;
+ else
+ llvm_unreachable ("Could not determine section type for global");
+
+ std::string Prefix = GV->getNameStr() + "." + Addr + ".";
+ std::string SName = PAN::getUserSectionName(Prefix);
+ PIC16Section *S = getPIC16UserSection(SName.c_str(), SecTy, Addr.c_str());
+ S->Items.push_back(GV);
+ return S;
+}
+
+