//===----------------------------------------------------------------------===//
#include "PIC16TargetAsmInfo.h"
-#include "PIC16TargetMachine.h"
-#include "llvm/GlobalValue.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/DerivedTypes.h"
+// FIXME: Layering violation to get enums and static function, should be moved
+// to separate headers.
+#include "PIC16.h"
+#include "PIC16ISelLowering.h"
using namespace llvm;
-PIC16TargetAsmInfo::
-PIC16TargetAsmInfo(const PIC16TargetMachine &TM)
- : TargetAsmInfo(TM) {
+PIC16TargetAsmInfo::PIC16TargetAsmInfo(const Target &T, const StringRef &TT) {
CommentString = ";";
GlobalPrefix = PAN::getTagName(PAN::PREFIX_SYMBOL);
GlobalDirective = "\tglobal\t";
Data16bitsDirective = " dw ";
Data32bitsDirective = " dl ";
Data64bitsDirective = NULL;
- RomData8bitsDirective = " dw ";
- RomData16bitsDirective = " rom_di ";
- RomData32bitsDirective = " rom_dl ";
ZeroDirective = NULL;
AsciiDirective = " dt ";
AscizDirective = NULL;
- BSSSection_ = getNamedSection("udata.# UDATA",
- SectionFlags::Writable | SectionFlags::BSS);
- ReadOnlySection = getNamedSection("romdata.# ROMDATA", SectionFlags::None);
- DataSection = getNamedSection("idata.# IDATA", SectionFlags::Writable);
- SwitchToSectionDirective = "";
- // Need because otherwise a .text symbol is emitted by DwarfWriter
- // in BeginModule, and gpasm cribbs for that .text symbol.
- TextSection = getUnnamedSection("", SectionFlags::Code);
- PIC16Section *ROSection = new PIC16Section(getReadOnlySection());
- ROSections.push_back(ROSection);
- ExternalVarDecls = new PIC16Section(getNamedSection("ExternalVarDecls"));
- ExternalVarDefs = new PIC16Section(getNamedSection("ExternalVarDefs"));
+
+ RomData8bitsDirective = " dw ";
+ RomData16bitsDirective = " rom_di ";
+ RomData32bitsDirective = " rom_dl ";
+
+
// Set it to false because we weed to generate c file name and not bc file
// name.
HasSingleParameterDotFile = false;
}
-const char *PIC16TargetAsmInfo::getRomDirective(unsigned Size) const {
+const char *PIC16TargetAsmInfo::
+getDataASDirective(unsigned Size, unsigned AS) const {
+ if (AS != PIC16ISD::ROM_SPACE)
+ return 0;
+
switch (Size) {
case 8: return RomData8bitsDirective;
case 16: return RomData16bitsDirective;
}
}
-
-const char *PIC16TargetAsmInfo::
-getDataASDirective(unsigned Size, unsigned AS) const {
- if (AS == PIC16ISD::ROM_SPACE)
- return getRomDirective(Size);
- return NULL;
-}
-
-const Section *
-PIC16TargetAsmInfo::getBSSSectionForGlobal(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 BSS Sections and assign this variable
- // to the first available section having enough space.
- PIC16Section *FoundBSS = NULL;
- for (unsigned i = 0; i < BSSSections.size(); i++) {
- if (DataBankSize - BSSSections[i]->Size >= ValSize) {
- FoundBSS = BSSSections[i];
- break;
- }
- }
-
- // No BSS section spacious enough was found. Crate a new one.
- if (!FoundBSS) {
- std::string name = PAN::getUdataSectionName(BSSSections.size());
- const Section *NewSection = getNamedSection(name.c_str());
-
- FoundBSS = new PIC16Section(NewSection);
-
- // Add this newly created BSS section to the list of BSSSections.
- BSSSections.push_back(FoundBSS);
- }
-
- // Insert the GV into this BSS.
- FoundBSS->Items.push_back(GV);
- FoundBSS->Size += ValSize;
- return FoundBSS->S_;
-}
-
-const Section *
-PIC16TargetAsmInfo::getIDATASectionForGlobal(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 split 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 *FoundIDATA = NULL;
- for (unsigned i = 0; i < IDATASections.size(); i++) {
- if (DataBankSize - IDATASections[i]->Size >= ValSize) {
- FoundIDATA = IDATASections[i];
- break;
- }
- }
-
- // No IDATA section spacious enough was found. Crate a new one.
- if (!FoundIDATA) {
- std::string name = PAN::getIdataSectionName(IDATASections.size());
- const Section *NewSection = getNamedSection(name.c_str());
-
- FoundIDATA = new PIC16Section(NewSection);
-
- // Add this newly created IDATA section to the list of IDATASections.
- IDATASections.push_back(FoundIDATA);
- }
-
- // Insert the GV into this IDATA.
- FoundIDATA->Items.push_back(GV);
- FoundIDATA->Size += ValSize;
- return FoundIDATA->S_;
-}
-
-// Get the section for an automatic variable of a function.
-// For PIC16 they are globals only with mangled names.
-const Section *
-PIC16TargetAsmInfo::getSectionForAuto(const GlobalVariable *GV) const {
-
- const std::string name = PAN::getSectionNameForSym(GV->getName());
-
- // Go through all Auto Sections and assign this variable
- // to the appropriate section.
- PIC16Section *FoundAutoSec = NULL;
- for (unsigned i = 0; i < AutosSections.size(); i++) {
- if (AutosSections[i]->S_->getName() == name) {
- FoundAutoSec = AutosSections[i];
- break;
- }
- }
-
- // No Auto section was found. Crate a new one.
- if (!FoundAutoSec) {
- const Section *NewSection = getNamedSection(name.c_str());
-
- FoundAutoSec = new PIC16Section(NewSection);
-
- // Add this newly created autos section to the list of AutosSections.
- AutosSections.push_back(FoundAutoSec);
- }
-
- // Insert the auto into this section.
- FoundAutoSec->Items.push_back(GV);
-
- return FoundAutoSec->S_;
-}
-
-
-// Override default implementation to put the true globals into
-// multiple data sections if required.
-const Section*
-PIC16TargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV1,
- SectionKind::Kind Kind) 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 TargetAsmInfo::SelectSectionForGlobal(GV1, Kind);
-
- // Record External Var Decls.
- if (GV->isDeclaration()) {
- ExternalVarDecls->Items.push_back(GV);
- return ExternalVarDecls->S_;
- }
-
- 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 getSectionForAuto(GV);
-
- // Record Exteranl Var Defs.
- if (GV->hasExternalLinkage() || GV->hasCommonLinkage())
- ExternalVarDefs->Items.push_back(GV);
-
- // See if this is an uninitialized global.
- const Constant *C = GV->getInitializer();
- if (C->isNullValue())
- return getBSSSectionForGlobal(GV);
-
- // If this is initialized data in RAM. Put it in the correct IDATA section.
- if (GV->getType()->getAddressSpace() == PIC16ISD::RAM_SPACE)
- return getIDATASectionForGlobal(GV);
-
- // This is initialized data in rom, put it in the readonly section.
- if (GV->getType()->getAddressSpace() == PIC16ISD::ROM_SPACE)
- return getROSectionForGlobal(GV);
-
- // Else let the default implementation take care of it.
- return TargetAsmInfo::SelectSectionForGlobal(GV, Kind);
-}
-
-PIC16TargetAsmInfo::~PIC16TargetAsmInfo() {
- for (unsigned i = 0; i < BSSSections.size(); i++)
- delete BSSSections[i];
- for (unsigned i = 0; i < IDATASections.size(); i++)
- delete IDATASections[i];
- for (unsigned i = 0; i < AutosSections.size(); i++)
- delete AutosSections[i];
- for (unsigned i = 0; i < ROSections.size(); i++)
- delete ROSections[i];
- delete ExternalVarDecls;
- delete ExternalVarDefs;
-}
-
-
-/// getSpecialCasedSectionGlobals - Allow the target to completely override
-/// section assignment of a global.
-const Section *
-PIC16TargetAsmInfo::getSpecialCasedSectionGlobals(const GlobalValue *GV,
- SectionKind::Kind Kind) const{
- // If GV has a sectin name or section address create that section now.
- if (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.
- std::string AddrStr = "Address=";
- if (SectName.compare(0, AddrStr.length(), AddrStr) == 0) {
- std::string SectAddr = SectName.substr(AddrStr.length());
- return CreateSectionForGlobal(GVar, SectAddr);
- }
- }
- }
-
- return 0;
-}
-
-// Create a new section for global variable. If Addr is given then create
-// section at that address else create by name.
-const Section *
-PIC16TargetAsmInfo::CreateSectionForGlobal(const GlobalVariable *GV,
- const std::string &Addr) const {
- // See if this is an uninitialized global.
- const Constant *C = GV->getInitializer();
- if (C->isNullValue())
- return CreateBSSSectionForGlobal(GV, Addr);
-
- // If this is initialized data in RAM. Put it in the correct IDATA section.
- if (GV->getType()->getAddressSpace() == PIC16ISD::RAM_SPACE)
- return CreateIDATASectionForGlobal(GV, Addr);
-
- // This is initialized data in rom, put it in the readonly section.
- if (GV->getType()->getAddressSpace() == PIC16ISD::ROM_SPACE)
- return CreateROSectionForGlobal(GV, Addr);
-
- // Else let the default implementation take care of it.
- return TargetAsmInfo::SectionForGlobal(GV);
-}
-
-// Create uninitialized section for a variable.
-const Section *
-PIC16TargetAsmInfo::CreateBSSSectionForGlobal(const GlobalVariable *GV,
- std::string Addr) const {
- assert(GV->hasInitializer() && "This global doesn't need space");
- assert(GV->getInitializer()->isNullValue() &&
- "Unitialized global has non-zero initializer");
- std::string Name;
- // If address is given then create a section at that address else create a
- // section by section name specified in GV.
- PIC16Section *FoundBSS = NULL;
- if (Addr.empty()) {
- Name = GV->getSection() + " UDATA";
- for (unsigned i = 0; i < BSSSections.size(); i++) {
- if (BSSSections[i]->S_->getName() == Name) {
- FoundBSS = BSSSections[i];
- break;
- }
- }
- } else {
- std::string Prefix = GV->getNameStr() + "." + Addr + ".";
- Name = PAN::getUdataSectionName(BSSSections.size(), Prefix) + " " + Addr;
- }
-
- PIC16Section *NewBSS = FoundBSS;
- if (NewBSS == NULL) {
- const Section *NewSection = getNamedSection(Name.c_str());
- NewBSS = new PIC16Section(NewSection);
- BSSSections.push_back(NewBSS);
- }
-
- // Insert the GV into this BSS.
- NewBSS->Items.push_back(GV);
-
- // We do not want to put any GV without explicit section into this section
- // so set its size to DatabankSize.
- NewBSS->Size = DataBankSize;
- return NewBSS->S_;
-}
-
-// Get rom section for a variable. Currently there can be only one rom section
-// unless a variable explicitly requests a section.
-const Section *
-PIC16TargetAsmInfo::getROSectionForGlobal(const GlobalVariable *GV) const {
- ROSections[0]->Items.push_back(GV);
- return ROSections[0]->S_;
-}
-
-// Create initialized data section for a variable.
-const Section *
-PIC16TargetAsmInfo::CreateIDATASectionForGlobal(const GlobalVariable *GV,
- std::string Addr) const {
- assert(GV->hasInitializer() && "This global doesn't need space");
- assert(!GV->getInitializer()->isNullValue() &&
- "initialized global has zero initializer");
- assert(GV->getType()->getAddressSpace() == PIC16ISD::RAM_SPACE &&
- "can be used for initialized RAM data only");
-
- std::string Name;
- // If address is given then create a section at that address else create a
- // section by section name specified in GV.
- PIC16Section *FoundIDATASec = NULL;
- if (Addr.empty()) {
- Name = GV->getSection() + " IDATA";
- for (unsigned i = 0; i < IDATASections.size(); i++) {
- if (IDATASections[i]->S_->getName() == Name) {
- FoundIDATASec = IDATASections[i];
- break;
- }
- }
- } else {
- std::string Prefix = GV->getNameStr() + "." + Addr + ".";
- Name = PAN::getIdataSectionName(IDATASections.size(), Prefix) + " " + Addr;
- }
-
- PIC16Section *NewIDATASec = FoundIDATASec;
- if (NewIDATASec == NULL) {
- const Section *NewSection = getNamedSection(Name.c_str());
- NewIDATASec = new PIC16Section(NewSection);
- IDATASections.push_back(NewIDATASec);
- }
- // Insert the GV into this IDATA Section.
- NewIDATASec->Items.push_back(GV);
- // We do not want to put any GV without explicit section into this section
- // so set its size to DatabankSize.
- NewIDATASec->Size = DataBankSize;
- return NewIDATASec->S_;
-}
-
-// Create a section in rom for a variable.
-const Section *
-PIC16TargetAsmInfo::CreateROSectionForGlobal(const GlobalVariable *GV,
- std::string Addr) const {
- assert(GV->getType()->getAddressSpace() == PIC16ISD::ROM_SPACE &&
- "can be used for ROM data only");
-
- std::string Name;
- // If address is given then create a section at that address else create a
- // section by section name specified in GV.
- PIC16Section *FoundROSec = NULL;
- if (Addr.empty()) {
- Name = GV->getSection() + " ROMDATA";
- for (unsigned i = 1; i < ROSections.size(); i++) {
- if (ROSections[i]->S_->getName() == Name) {
- FoundROSec = ROSections[i];
- break;
- }
- }
- } else {
- std::string Prefix = GV->getNameStr() + "." + Addr + ".";
- Name = PAN::getRomdataSectionName(ROSections.size(), Prefix) + " " + Addr;
- }
-
- PIC16Section *NewRomSec = FoundROSec;
- if (NewRomSec == NULL) {
- const Section *NewSection = getNamedSection(Name.c_str());
- NewRomSec = new PIC16Section(NewSection);
- ROSections.push_back(NewRomSec);
- }
-
- // Insert the GV into this ROM Section.
- NewRomSec->Items.push_back(GV);
- return NewRomSec->S_;
-}
-
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