#include "llvm/Module.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/DwarfWriter.h"
+#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
+#include <iostream>
#include <set>
using namespace llvm;
class PPCAsmPrinter : public AsmPrinter {
public:
- std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
+ std::set<std::string> FnStubs, GVStubs;
PPCAsmPrinter(std::ostream &O, TargetMachine &TM)
: AsmPrinter(O, TM) {}
void printMachineInstruction(const MachineInstr *MI);
void printOp(const MachineOperand &MO);
- void printOperand(const MachineInstr *MI, unsigned OpNo){
+ void printOperand(const MachineInstr *MI, unsigned OpNo) {
const MachineOperand &MO = MI->getOperand(OpNo);
if (MO.getType() == MachineOperand::MO_MachineRegister) {
assert(MRegisterInfo::isPhysicalRegister(MO.getReg())&&"Not physreg??");
printOp(MO);
}
}
-
+
+ bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant, const char *ExtraCode) {
+ printOperand(MI, OpNo);
+ return false;
+ }
+
void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo) {
unsigned char value = MI->getOperand(OpNo).getImmedValue();
assert(value <= 31 && "Invalid u5imm argument!");
void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
const MachineOperand &MO = MI->getOperand(OpNo);
if (!PPCGenerateStaticCode) {
+ if (MO.getType() == MachineOperand::MO_GlobalAddress) {
+ GlobalValue *GV = MO.getGlobal();
+ if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ GV->hasLinkOnceLinkage()))) {
+ // Dynamically-resolved functions need a stub for the function.
+ std::string Name = Mang->getValueName(GV);
+ FnStubs.insert(Name);
+ O << "L" << Name << "$stub";
+ return;
+ }
+ }
if (MO.getType() == MachineOperand::MO_ExternalSymbol) {
std::string Name(GlobalPrefix); Name += MO.getSymbolName();
FnStubs.insert(Name);
O << "L" << Name << "$stub";
return;
- } else if (MO.getType() == MachineOperand::MO_GlobalAddress &&
- isa<Function>(MO.getGlobal()) &&
- cast<Function>(MO.getGlobal())->isExternal()) {
- // Dynamically-resolved functions need a stub for the function.
- std::string Name = Mang->getValueName(MO.getGlobal());
- FnStubs.insert(Name);
- O << "L" << Name << "$stub";
- return;
}
}
O << (int)MI->getOperand(OpNo).getImmedValue()*4;
}
void printPICLabel(const MachineInstr *MI, unsigned OpNo) {
- // FIXME: should probably be converted to cout.width and cout.fill
- O << "\"L0000" << getFunctionNumber() << "$pb\"\n";
- O << "\"L0000" << getFunctionNumber() << "$pb\":";
+ O << "\"L" << getFunctionNumber() << "$pb\"\n";
+ O << "\"L" << getFunctionNumber() << "$pb\":";
}
void printSymbolHi(const MachineInstr *MI, unsigned OpNo) {
if (MI->getOperand(OpNo).isImmediate()) {
O << "ha16(";
printOp(MI->getOperand(OpNo));
if (PICEnabled)
- O << "-\"L0000" << getFunctionNumber() << "$pb\")";
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
}
O << "lo16(";
printOp(MI->getOperand(OpNo));
if (PICEnabled)
- O << "-\"L0000" << getFunctionNumber() << "$pb\")";
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
}
unsigned RegNo = enumRegToMachineReg(CCReg);
O << (0x80 >> RegNo);
}
-
+ // The new addressing mode printers, currently empty
+ void printMemRegImm(const MachineInstr *MI, unsigned OpNo) {
+ printSymbolLo(MI, OpNo);
+ O << '(';
+ printOperand(MI, OpNo+1);
+ O << ')';
+ }
+ void printMemRegReg(const MachineInstr *MI, unsigned OpNo) {
+ // When used as the base register, r0 reads constant zero rather than
+ // the value contained in the register. For this reason, the darwin
+ // assembler requires that we print r0 as 0 (no r) when used as the base.
+ const MachineOperand &MO = MI->getOperand(OpNo);
+ if (MO.getReg() == PPC::R0)
+ O << '0';
+ else
+ O << TM.getRegisterInfo()->get(MO.getReg()).Name;
+ O << ", ";
+ printOperand(MI, OpNo+1);
+ }
+
virtual bool runOnMachineFunction(MachineFunction &F) = 0;
virtual bool doFinalization(Module &M) = 0;
+
+ };
+
+ /// DarwinDwarfWriter - Dwarf debug info writer customized for Darwin/Mac OS X
+ ///
+ struct DarwinDwarfWriter : public DwarfWriter {
+ // Ctor.
+ DarwinDwarfWriter(std::ostream &o, AsmPrinter *ap)
+ : DwarfWriter(o, ap)
+ {
+ needsSet = true;
+ DwarfAbbrevSection = ".section __DWARF,__debug_abbrev";
+ DwarfInfoSection = ".section __DWARF,__debug_info";
+ DwarfLineSection = ".section __DWARF,__debug_line";
+ DwarfFrameSection =
+ ".section __DWARF,__debug_frame,,coalesced,no_toc+strip_static_syms";
+ DwarfPubNamesSection = ".section __DWARF,__debug_pubnames";
+ DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes";
+ DwarfStrSection = ".section __DWARF,__debug_str";
+ DwarfLocSection = ".section __DWARF,__debug_loc";
+ DwarfARangesSection = ".section __DWARF,__debug_aranges";
+ DwarfRangesSection = ".section __DWARF,__debug_ranges";
+ DwarfMacInfoSection = ".section __DWARF,__debug_macinfo";
+ TextSection = ".text";
+ DataSection = ".data";
+ }
};
/// DarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac OS
/// X
- ///
struct DarwinAsmPrinter : public PPCAsmPrinter {
+
+ DarwinDwarfWriter DW;
DarwinAsmPrinter(std::ostream &O, TargetMachine &TM)
- : PPCAsmPrinter(O, TM) {
+ : PPCAsmPrinter(O, TM), DW(O, this) {
CommentString = ";";
GlobalPrefix = "_";
PrivateGlobalPrefix = "L"; // Marker for constant pool idxs
AlignmentIsInBytes = false; // Alignment is by power of 2.
ConstantPoolSection = "\t.const\t";
LCOMMDirective = "\t.lcomm\t";
+ StaticCtorsSection = ".mod_init_func";
+ StaticDtorsSection = ".mod_term_func";
+ InlineAsmStart = InlineAsmEnd = ""; // Don't use #APP/#NO_APP
}
virtual const char *getPassName() const {
return "Darwin PPC Assembly Printer";
}
- void EmitXXStructorList(Constant *List);
-
bool runOnMachineFunction(MachineFunction &F);
bool doInitialization(Module &M);
bool doFinalization(Module &M);
+
+ void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ AU.addRequired<MachineDebugInfo>();
+ PPCAsmPrinter::getAnalysisUsage(AU);
+ }
+
};
/// AIXAsmPrinter - PowerPC assembly printer, customized for AIX
O << PrivateGlobalPrefix << "CPI" << getFunctionNumber()
<< '_' << MO.getConstantPoolIndex();
return;
-
case MachineOperand::MO_ExternalSymbol:
+ // Computing the address of an external symbol, not calling it.
+ if (!PPCGenerateStaticCode) {
+ std::string Name(GlobalPrefix); Name += MO.getSymbolName();
+ GVStubs.insert(Name);
+ O << "L" << Name << "$non_lazy_ptr";
+ return;
+ }
O << GlobalPrefix << MO.getSymbolName();
return;
-
case MachineOperand::MO_GlobalAddress: {
+ // Computing the address of a global symbol, not calling it.
GlobalValue *GV = MO.getGlobal();
std::string Name = Mang->getValueName(GV);
+ int offset = MO.getOffset();
// External or weakly linked global variables need non-lazily-resolved stubs
- if (!PPCGenerateStaticCode &&
- ((GV->isExternal() || GV->hasWeakLinkage() ||
- GV->hasLinkOnceLinkage()))) {
- if (GV->hasLinkOnceLinkage())
- LinkOnceStubs.insert(Name);
- else
+ if (!PPCGenerateStaticCode) {
+ if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ GV->hasLinkOnceLinkage()))) {
GVStubs.insert(Name);
- O << "L" << Name << "$non_lazy_ptr";
- return;
+ O << "L" << Name << "$non_lazy_ptr";
+ return;
+ }
}
O << Name;
O << ", " << (unsigned int)SH << "\n";
return;
}
+ } else if (MI->getOpcode() == PPC::OR4 || MI->getOpcode() == PPC::OR8) {
+ if (MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
+ O << "mr ";
+ printOperand(MI, 0);
+ O << ", ";
+ printOperand(MI, 1);
+ O << "\n";
+ return;
+ }
}
if (printInstruction(MI))
/// method to print assembly for each instruction.
///
bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
+ // FIXME - is this the earliest this can be set?
+ DW.SetDebugInfo(&getAnalysis<MachineDebugInfo>());
+
SetupMachineFunction(MF);
O << "\n\n";
+
+ // Emit pre-function debug information.
+ DW.BeginFunction(MF);
// Print out constants referenced by the function
EmitConstantPool(MF.getConstantPool());
// Print out labels for the function.
const Function *F = MF.getFunction();
- SwitchSection(".text", F);
- EmitAlignment(4, F);
- if (!F->hasInternalLinkage())
+ switch (F->getLinkage()) {
+ default: assert(0 && "Unknown linkage type!");
+ case Function::InternalLinkage: // Symbols default to internal.
+ SwitchSection(".text", F);
+ EmitAlignment(4, F);
+ break;
+ case Function::ExternalLinkage:
+ SwitchSection(".text", F);
+ EmitAlignment(4, F);
+ O << "\t.globl\t" << CurrentFnName << "\n";
+ break;
+ case Function::WeakLinkage:
+ case Function::LinkOnceLinkage:
+ SwitchSection(".section __TEXT,__textcoal_nt,coalesced,pure_instructions",
+ F);
O << "\t.globl\t" << CurrentFnName << "\n";
+ O << "\t.weak_definition\t" << CurrentFnName << "\n";
+ break;
+ }
O << CurrentFnName << ":\n";
// Print out code for the function.
}
}
+ // Emit post-function debug information.
+ DW.EndFunction(MF);
+
// We didn't modify anything.
return false;
}
// Darwin wants symbols to be quoted if they have complex names.
Mang->setUseQuotes(true);
+
+ // Emit initial debug information.
+ DW.BeginModule(M);
return false;
}
-/// EmitXXStructorList - Emit the ctor or dtor list. On darwin, this just
-/// prints out the function pointers.
-void DarwinAsmPrinter::EmitXXStructorList(Constant *List) {
- // Should be an array of '{ int, void ()* }' structs. The first value is the
- // init priority, which we ignore.
- if (!isa<ConstantArray>(List)) return;
- ConstantArray *InitList = cast<ConstantArray>(List);
- for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
- if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
- if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
- // Emit the function pointer.
- EmitGlobalConstant(CS->getOperand(1));
- }
-}
-
bool DarwinAsmPrinter::doFinalization(Module &M) {
const TargetData &TD = TM.getTargetData();
I != E; ++I) {
if (!I->hasInitializer()) continue; // External global require no code
- // Check to see if this is a special global used by LLVM.
- if (I->hasAppendingLinkage()) {
- if (I->getName() == "llvm.used")
- continue; // No need to emit this at all.
- if (I->getName() == "llvm.global_ctors") {
- SwitchSection(".mod_init_func", 0);
- EmitAlignment(2, 0);
- EmitXXStructorList(I->getInitializer());
- continue;
- } else if (I->getName() == "llvm.global_dtors") {
- SwitchSection(".mod_term_func", 0);
- EmitAlignment(2, 0);
- EmitXXStructorList(I->getInitializer());
- continue;
- }
- }
+ // Check to see if this is a special global used by LLVM, if so, emit it.
+ if (I->hasAppendingLinkage() && EmitSpecialLLVMGlobal(I))
+ continue;
- O << '\n';
std::string name = Mang->getValueName(I);
Constant *C = I->getInitializer();
unsigned Size = TD.getTypeSize(C->getType());
- unsigned Align = TD.getTypeAlignmentShift(C->getType());
+ unsigned Align = getPreferredAlignmentLog(I);
if (C->isNullValue() && /* FIXME: Verify correct */
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
} else {
switch (I->getLinkage()) {
case GlobalValue::LinkOnceLinkage:
- SwitchSection("", 0);
- O << ".section __TEXT,__textcoal_nt,coalesced,no_toc\n"
- << ".weak_definition " << name << '\n'
- << ".private_extern " << name << '\n'
- << ".section __DATA,__datacoal_nt,coalesced,no_toc\n";
- LinkOnceStubs.insert(name);
- break;
case GlobalValue::WeakLinkage:
- O << ".weak_definition " << name << '\n'
- << ".private_extern " << name << '\n';
+ O << "\t.globl " << name << '\n'
+ << "\t.weak_definition " << name << '\n';
+ SwitchSection(".section __DATA,__datacoal_nt,coalesced", I);
break;
case GlobalValue::AppendingLinkage:
// FIXME: appending linkage variables should go into a section of
EmitAlignment(Align, I);
O << name << ":\t\t\t\t; '" << I->getName() << "'\n";
EmitGlobalConstant(C);
+ O << '\n';
}
}
if (PICEnabled) {
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
i != e; ++i) {
- O << ".data\n";
- O<<".section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32\n";
+ SwitchSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ "pure_instructions,32", 0);
EmitAlignment(2);
O << "L" << *i << "$stub:\n";
O << "\t.indirect_symbol " << *i << "\n";
O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
- O << ".data\n";
- O << ".lazy_symbol_pointer\n";
+ SwitchSection(".lazy_symbol_pointer", 0);
O << "L" << *i << "$lazy_ptr:\n";
O << "\t.indirect_symbol " << *i << "\n";
O << "\t.long dyld_stub_binding_helper\n";
} else {
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
i != e; ++i) {
- O<<"\t.section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16\n";
+ SwitchSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
+ "pure_instructions,16", 0);
EmitAlignment(4);
O << "L" << *i << "$stub:\n";
O << "\t.indirect_symbol " << *i << "\n";
O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
- O << "\t.lazy_symbol_pointer\n";
+ SwitchSection(".lazy_symbol_pointer", 0);
O << "L" << *i << "$lazy_ptr:\n";
O << "\t.indirect_symbol " << *i << "\n";
O << "\t.long dyld_stub_binding_helper\n";
O << "\n";
- // Output stubs for external global variables
- if (GVStubs.begin() != GVStubs.end())
- O << ".data\n.non_lazy_symbol_pointer\n";
- for (std::set<std::string>::iterator i = GVStubs.begin(), e = GVStubs.end();
- i != e; ++i) {
- O << "L" << *i << "$non_lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long\t0\n";
- }
-
- // Output stubs for link-once variables
- if (LinkOnceStubs.begin() != LinkOnceStubs.end()) {
- O << ".data\n.align 2\n";
- for (std::set<std::string>::iterator i = LinkOnceStubs.begin(),
- e = LinkOnceStubs.end(); i != e; ++i) {
- O << "L" << *i << "$non_lazy_ptr:\n"
- << "\t.long\t" << *i << '\n';
+ // Output stubs for external and common global variables.
+ if (GVStubs.begin() != GVStubs.end()) {
+ SwitchSection(".non_lazy_symbol_pointer", 0);
+ for (std::set<std::string>::iterator I = GVStubs.begin(),
+ E = GVStubs.end(); I != E; ++I) {
+ O << "L" << *I << "$non_lazy_ptr:\n";
+ O << "\t.indirect_symbol " << *I << "\n";
+ O << "\t.long\t0\n";
}
}
+ // Emit initial debug information.
+ DW.EndModule(M);
+
// Funny Darwin hack: This flag tells the linker that no global symbols
// contain code that falls through to other global symbols (e.g. the obvious
// implementation of multiple entry points). If this doesn't occur, the
return false; // success
}
-/// runOnMachineFunction - This uses the printMachineInstruction()
+/// runOnMachineFunction - This uses the e()
/// method to print assembly for each instruction.
///
bool AIXAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
SetupMachineFunction(MF);
-
+
// Print out constants referenced by the function
EmitConstantPool(MF.getConstantPool());