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Diffstat (limited to 'lib/Target/PIC16/PIC16TargetObjectFile.cpp')
| -rw-r--r-- | lib/Target/PIC16/PIC16TargetObjectFile.cpp | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/lib/Target/PIC16/PIC16TargetObjectFile.cpp b/lib/Target/PIC16/PIC16TargetObjectFile.cpp deleted file mode 100644 index ff0f971..0000000 --- a/lib/Target/PIC16/PIC16TargetObjectFile.cpp +++ /dev/null @@ -1,384 +0,0 @@ -//===-- 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 "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) const { - /// 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"); - const 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"); - const 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, - bool isISR) const { - const std::string &sec_name = PAN::getCodeSectionName(FnName); - // If it is ISR, its code section starts at a specific address. - if (isISR) - return getPIC16Section(sec_name, CODE, PAN::getISRAddr()); - 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; -} - - |
