Emit banksel and movlp instructions.
Split large global data (both initialized and un-initialized) into multiple sections of <= 80 bytes.
Provide routines to manage PIC16 ABI naming conventions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71073 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16AsmPrinter.cpp b/lib/Target/PIC16/PIC16AsmPrinter.cpp
index 510e105..87ecb20 100644
--- a/lib/Target/PIC16/PIC16AsmPrinter.cpp
+++ b/lib/Target/PIC16/PIC16AsmPrinter.cpp
@@ -45,51 +45,6 @@
}
bool PIC16AsmPrinter::printMachineInstruction(const MachineInstr *MI) {
- std::string NewBank = "";
- unsigned Operands = MI->getNumOperands();
- if (Operands > 1) {
- // If we have a Global address or external symbol then we need to print
- // banksel for it.
- unsigned BankSelVar = 0;
- MachineOperand Op = MI->getOperand(BankSelVar);
- while (BankSelVar < Operands-1) {
- Op = MI->getOperand(BankSelVar);
- if ((Op.getType() == MachineOperand::MO_GlobalAddress) ||
- (Op.getType() == MachineOperand::MO_ExternalSymbol))
- break;
- BankSelVar++;
- }
- if (BankSelVar < Operands-1) {
- unsigned OpType = Op.getType();
- if (OpType == MachineOperand::MO_GlobalAddress )
- NewBank = Op.getGlobal()->getSection();
- else {
- // External Symbol is generated for temp data and arguments. They are
- // in fpdata.<functionname>.# section.
- std::string ESName = Op.getSymbolName();
- int index = ESName.find_first_of(".");
- std::string FnName = ESName.substr(0,index);
- NewBank = "fpdata." + FnName +".#";
- }
- // Operand after global address or external symbol should be banksel.
- // Value 1 for this operand means we need to generate banksel else do not
- // generate banksel.
- const MachineOperand &BS = MI->getOperand(BankSelVar+1);
- // If Section names are same then the variables are in same section.
- // This is not true for external variables as section names for global
- // variables in all files are same at this time. For eg. initialized
- // data in put in idata.# section in all files.
- if ((BS.getType() == MachineOperand::MO_Immediate
- && (int)BS.getImm() == 1)
- && ((Op.isGlobal() && Op.getGlobal()->hasExternalLinkage()) ||
- (NewBank.compare(CurBank) != 0))) {
- O << "\tbanksel ";
- printOperand(MI, BankSelVar);
- O << "\n";
- CurBank = NewBank;
- }
- }
- }
printInstruction(MI);
return true;
}
@@ -118,8 +73,8 @@
SwitchToSection (fCodeSection);
// Emit the frame address of the function at the beginning of code.
- O << " retlw low(" << FunctionLabelBegin<< CurrentFnName << ".frame)\n";
- O << " retlw high(" << FunctionLabelBegin<< CurrentFnName << ".frame)\n";
+ O << " retlw low(" << FunctionLabelBegin<< CurrentFnName << ".frame.)\n";
+ O << " retlw high(" << FunctionLabelBegin<< CurrentFnName << ".frame.)\n";
O << CurrentFnName << ":\n";
@@ -131,7 +86,6 @@
printBasicBlockLabel(I, true);
O << '\n';
}
- CurBank = "";
// For emitting line directives, we need to keep track of the current
// source line. When it changes then only emit the line directive.
@@ -225,8 +179,7 @@
DW->BeginModule(&M, MMI, O, this, TAI);
EmitExternsAndGlobals (M);
- EmitInitData (M);
- EmitUnInitData(M);
+ EmitGlobalData(M);
EmitRomData(M);
return Result;
}
@@ -245,13 +198,13 @@
if (I->isDeclaration()) {
O << "\textern " <<Name << "\n";
- O << "\textern " << FunctionLabelBegin << Name << ".retval\n";
- O << "\textern " << FunctionLabelBegin << Name << ".args\n";
+ O << "\textern " << FunctionLabelBegin << Name << ".ret.\n";
+ O << "\textern " << FunctionLabelBegin << Name << ".args.\n";
}
else if (I->hasExternalLinkage()) {
O << "\tglobal " << Name << "\n";
- O << "\tglobal " << FunctionLabelBegin << Name << ".retval\n";
- O << "\tglobal " << FunctionLabelBegin<< Name << ".args\n";
+ O << "\tglobal " << FunctionLabelBegin << Name << ".ret.\n";
+ O << "\tglobal " << FunctionLabelBegin<< Name << ".args.\n";
}
}
@@ -274,35 +227,6 @@
}
}
-void PIC16AsmPrinter::EmitInitData (Module &M) {
- SwitchToSection(TAI->getDataSection());
- for (Module::global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer()) // External global require no code.
- continue;
-
- Constant *C = I->getInitializer();
- const PointerType *PtrTy = I->getType();
- int AddrSpace = PtrTy->getAddressSpace();
-
- if ((!C->isNullValue()) && (AddrSpace == PIC16ISD::RAM_SPACE)) {
-
- if (EmitSpecialLLVMGlobal(I))
- continue;
-
- // Any variables reaching here with "." in its name is a local scope
- // variable and should not be printed in global data section.
- std::string Name = Mang->getValueName(I);
- if (isLocalName(Name))
- continue;
-
- I->setSection(TAI->getDataSection()->getName());
- O << Name;
- EmitGlobalConstant(C, AddrSpace);
- }
- }
-}
-
void PIC16AsmPrinter::EmitRomData (Module &M)
{
SwitchToSection(TAI->getReadOnlySection());
@@ -335,39 +259,6 @@
IsRomData = false;
}
-void PIC16AsmPrinter::EmitUnInitData (Module &M)
-{
- SwitchToSection(TAI->getBSSSection_());
- const TargetData *TD = TM.getTargetData();
-
- for (Module::global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer()) // External global require no code.
- continue;
-
- Constant *C = I->getInitializer();
- if (C->isNullValue()) {
-
- if (EmitSpecialLLVMGlobal(I))
- continue;
-
- // Any variables reaching here with "." in its name is a local scope
- // variable and should not be printed in global data section.
- std::string name = Mang->getValueName(I);
- if (name.find(".") != std::string::npos)
- continue;
-
- I->setSection(TAI->getBSSSection_()->getName());
-
- const Type *Ty = C->getType();
- unsigned Size = TD->getTypePaddedSize(Ty);
-
- O << name << " " <<"RES"<< " " << Size ;
- O << "\n";
- }
- }
-}
-
bool PIC16AsmPrinter::doFinalization(Module &M) {
O << "\t" << "END\n";
bool Result = AsmPrinter::doFinalization(M);
@@ -390,7 +281,7 @@
// Emit function frame label
- O << FunctionLabelBegin << CurrentFnName << ".frame:\n";
+ O << FunctionLabelBegin << CurrentFnName << ".frame.:\n";
const Type *RetType = F->getReturnType();
unsigned RetSize = 0;
@@ -399,10 +290,10 @@
//Emit function return value space
if(RetSize > 0)
- O << FunctionLabelBegin << CurrentFnName << ".retval RES " << RetSize
+ O << FunctionLabelBegin << CurrentFnName << ".ret. RES " << RetSize
<< "\n";
else
- O << FunctionLabelBegin << CurrentFnName << ".retval:\n";
+ O << FunctionLabelBegin << CurrentFnName << ".ret.:\n";
// Emit variable to hold the space for function arguments
unsigned ArgSize = 0;
@@ -411,13 +302,13 @@
const Type *Ty = argi->getType();
ArgSize += TD->getTypePaddedSize(Ty);
}
- O << FunctionLabelBegin << CurrentFnName << ".args RES " << ArgSize
+ O << FunctionLabelBegin << CurrentFnName << ".args. RES " << ArgSize
<< "\n";
// Emit temporary space
int TempSize = PTLI->GetTmpSize();
if (TempSize > 0 )
- O << FunctionLabelBegin << CurrentFnName << ".tmp RES " << TempSize
+ O << FunctionLabelBegin << CurrentFnName << ".temp. RES " << TempSize
<<"\n";
// Emit the section name for local variables.
@@ -454,5 +345,40 @@
// Emit memory reserve directive.
O << FunctionLabelBegin << VarName << " RES " << Size << "\n";
}
-
}
+
+void PIC16AsmPrinter::EmitGlobalData (Module &M)
+{
+ const PIC16TargetAsmInfo *PTAI = static_cast<const PIC16TargetAsmInfo *>(TAI);
+ const_cast<PIC16TargetAsmInfo *>(PTAI)->SetSectionForGVs(M);
+ const TargetData *TD = TM.getTargetData();
+
+ std::vector <PIC16Section *>IDATASections = PTAI->getIDATASections();
+ for (unsigned i = 0; i < IDATASections.size(); i++) {
+ SwitchToSection(IDATASections[i]->S_);
+ std::vector<const GlobalVariable*> Items = IDATASections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string Name = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ int AddrSpace = Items[j]->getType()->getAddressSpace();
+ O << Name;
+ EmitGlobalConstant(C, AddrSpace);
+ }
+ }
+
+ std::vector <PIC16Section *>BSSSections = PTAI->getBSSSections();
+ for (unsigned i = 0; i < BSSSections.size(); i++) {
+ SwitchToSection(BSSSections[i]->S_);
+ std::vector<const GlobalVariable*> Items = BSSSections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string Name = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ const Type *Ty = C->getType();
+ unsigned Size = TD->getTypePaddedSize(Ty);
+
+ O << Name << " " <<"RES"<< " " << Size ;
+ O << "\n";
+ }
+ }
+}
+