#include "llvm/Module.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/CommandLine.h"
Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
class PPCAsmPrinter : public AsmPrinter {
-public:
- std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
+ public:
+ std::set<std::string> FnStubs, GVStubs;
PPCAsmPrinter(std::ostream &O, TargetMachine &TM)
: AsmPrinter(O, TM) {}
return static_cast<PPCTargetMachine&>(TM);
}
- void printConstantPool(MachineConstantPool *MCP);
-
unsigned enumRegToMachineReg(unsigned enumReg) {
switch (enumReg) {
default: assert(0 && "Unhandled register!"); break;
void printMachineInstruction(const MachineInstr *MI);
void printOp(const MachineOperand &MO);
- void printOperand(const MachineInstr *MI, unsigned OpNo, MVT::ValueType VT){
+ 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??");
}
}
- void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo) {
unsigned char value = MI->getOperand(OpNo).getImmedValue();
assert(value <= 31 && "Invalid u5imm argument!");
O << (unsigned int)value;
}
- void printU6ImmOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printU6ImmOperand(const MachineInstr *MI, unsigned OpNo) {
unsigned char value = MI->getOperand(OpNo).getImmedValue();
assert(value <= 63 && "Invalid u6imm argument!");
O << (unsigned int)value;
}
- void printS16ImmOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printS16ImmOperand(const MachineInstr *MI, unsigned OpNo) {
O << (short)MI->getOperand(OpNo).getImmedValue();
}
- void printU16ImmOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printU16ImmOperand(const MachineInstr *MI, unsigned OpNo) {
O << (unsigned short)MI->getOperand(OpNo).getImmedValue();
}
- void printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo) {
O << (short)MI->getOperand(OpNo).getImmedValue()*4;
}
- void printBranchOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printBranchOperand(const MachineInstr *MI, unsigned OpNo) {
// Branches can take an immediate operand. This is used by the branch
// selection pass to print $+8, an eight byte displacement from the PC.
if (MI->getOperand(OpNo).isImmediate()) {
printOp(MI->getOperand(OpNo));
}
}
- void printCallOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
const MachineOperand &MO = MI->getOperand(OpNo);
if (!PPCGenerateStaticCode) {
+ if (MO.getType() == MachineOperand::MO_GlobalAddress) {
+ GlobalValue *GV = MO.getGlobal();
+ if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ GV->hasLinkOnceLinkage()))) {
+ // Dynamically-resolved functions need a stub for the function.
+ std::string Name = Mang->getValueName(GV);
+ FnStubs.insert(Name);
+ O << "L" << Name << "$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;
}
}
printOp(MI->getOperand(OpNo));
}
- void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo) {
O << (int)MI->getOperand(OpNo).getImmedValue()*4;
}
- void printPICLabel(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
- // FIXME: should probably be converted to cout.width and cout.fill
- O << "\"L0000" << getFunctionNumber() << "$pb\"\n";
- O << "\"L0000" << getFunctionNumber() << "$pb\":";
+ void printPICLabel(const MachineInstr *MI, unsigned OpNo) {
+ O << "\"L" << getFunctionNumber() << "$pb\"\n";
+ O << "\"L" << getFunctionNumber() << "$pb\":";
}
- void printSymbolHi(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printSymbolHi(const MachineInstr *MI, unsigned OpNo) {
if (MI->getOperand(OpNo).isImmediate()) {
- printS16ImmOperand(MI, OpNo, VT);
+ printS16ImmOperand(MI, OpNo);
} else {
O << "ha16(";
printOp(MI->getOperand(OpNo));
if (PICEnabled)
- O << "-\"L0000" << getFunctionNumber() << "$pb\")";
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
}
}
- void printSymbolLo(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printSymbolLo(const MachineInstr *MI, unsigned OpNo) {
if (MI->getOperand(OpNo).isImmediate()) {
- printS16ImmOperand(MI, OpNo, VT);
+ printS16ImmOperand(MI, OpNo);
} else {
O << "lo16(";
printOp(MI->getOperand(OpNo));
if (PICEnabled)
- O << "-\"L0000" << getFunctionNumber() << "$pb\")";
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
}
}
- void printcrbitm(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printcrbitm(const MachineInstr *MI, unsigned OpNo) {
unsigned CCReg = MI->getOperand(OpNo).getReg();
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;
};
ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
Data64bitsDirective = 0; // we can't emit a 64-bit unit
AlignmentIsInBytes = false; // Alignment is by power of 2.
+ ConstantPoolSection = "\t.const\t";
+ LCOMMDirective = "\t.lcomm\t";
+ StaticCtorsSection = ".mod_init_func";
+ StaticDtorsSection = ".mod_term_func";
}
virtual const char *getPassName() const {
return "Darwin PPC Assembly Printer";
}
-
+
bool runOnMachineFunction(MachineFunction &F);
bool doInitialization(Module &M);
bool doFinalization(Module &M);
ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
Data64bitsDirective = 0; // we can't emit a 64-bit unit
AlignmentIsInBytes = false; // Alignment is by power of 2.
+ ConstantPoolSection = "\t.const\t";
}
virtual const char *getPassName() const {
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 << "$non_lazy_ptr";
+ return;
+ }
O << GlobalPrefix << MO.getSymbolName();
return;
-
case MachineOperand::MO_GlobalAddress: {
+ // Computing the address of a global symbol, not calling it.
GlobalValue *GV = MO.getGlobal();
std::string Name = Mang->getValueName(GV);
// External or weakly linked global variables need non-lazily-resolved stubs
- if (!PPCGenerateStaticCode &&
- ((GV->isExternal() || GV->hasWeakLinkage() ||
- GV->hasLinkOnceLinkage()))) {
- if (GV->hasLinkOnceLinkage())
- LinkOnceStubs.insert(Name);
- else
+ if (!PPCGenerateStaticCode) {
+ if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ GV->hasLinkOnceLinkage()))) {
GVStubs.insert(Name);
- O << "L" << Name << "$non_lazy_ptr";
- return;
+ O << "L" << Name << "$non_lazy_ptr";
+ return;
+ }
}
O << Name;
SH = 32-SH;
}
if (FoundMnemonic) {
- printOperand(MI, 0, MVT::i64);
+ printOperand(MI, 0);
O << ", ";
- printOperand(MI, 1, MVT::i64);
+ printOperand(MI, 1);
O << ", " << (unsigned int)SH << "\n";
return;
}
return;
}
-/// printConstantPool - Print to the current output stream assembly
-/// representations of the constants in the constant pool MCP. This is
-/// used to print out constants which have been "spilled to memory" by
-/// the code generator.
-///
-void PPCAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
- const std::vector<Constant*> &CP = MCP->getConstants();
- const TargetData &TD = TM.getTargetData();
-
- if (CP.empty()) return;
-
- SwitchSection(".const", 0);
- for (unsigned i = 0, e = CP.size(); i != e; ++i) {
- // FIXME: force doubles to be naturally aligned. We should handle this
- // more correctly in the future.
- unsigned Alignment = TD.getTypeAlignmentShift(CP[i]->getType());
- if (CP[i]->getType() == Type::DoubleTy && Alignment < 3) Alignment = 3;
-
- EmitAlignment(Alignment);
- O << PrivateGlobalPrefix << "CPI" << getFunctionNumber() << '_' << i
- << ":\t\t\t\t\t" << CommentString << *CP[i] << '\n';
- EmitGlobalConstant(CP[i]);
- }
-}
-
/// runOnMachineFunction - This uses the printMachineInstruction()
/// method to print assembly for each instruction.
bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
SetupMachineFunction(MF);
O << "\n\n";
+
+ // Print out dwarf file info
+ MachineDebugInfo &DebugInfo = MF.getDebugInfo();
+ std::vector<std::string> Sources = DebugInfo.getSourceFiles();
+ for (unsigned i = 0, N = Sources.size(); i < N; i++) {
+ O << "\t; .file\t" << (i + 1) << "," << "\"" << Sources[i] << "\"" << "\n";
+ }
// Print out constants referenced by the function
- printConstantPool(MF.getConstantPool());
+ 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.
// Print out module-level global variables here.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I)
- if (I->hasInitializer()) { // External global require no code
- O << '\n';
- std::string name = Mang->getValueName(I);
- Constant *C = I->getInitializer();
- unsigned Size = TD.getTypeSize(C->getType());
- unsigned Align = TD.getTypeAlignmentShift(C->getType());
-
- if (C->isNullValue() && /* FIXME: Verify correct */
- (I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage())) {
+ 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 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());
+
+ if (C->isNullValue() && /* FIXME: Verify correct */
+ (I->hasInternalLinkage() || I->hasWeakLinkage() ||
+ I->hasLinkOnceLinkage())) {
+ SwitchSection(".data", I);
+ if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
+ if (I->hasInternalLinkage())
+ O << LCOMMDirective << name << "," << Size << "," << Align;
+ else
+ O << ".comm " << name << "," << Size;
+ O << "\t\t; '" << I->getName() << "'\n";
+ } else {
+ switch (I->getLinkage()) {
+ case GlobalValue::LinkOnceLinkage:
+ case GlobalValue::WeakLinkage:
+ O << ".globl " << name << '\n'
+ << ".weak_definition " << name << '\n'
+ << ".private_extern " << name << '\n';
+ SwitchSection(".section __DATA,__datacoal_nt,coalesced", I);
+ break;
+ case GlobalValue::AppendingLinkage:
+ // FIXME: appending linkage variables should go into a section of
+ // their name or something. For now, just emit them as external.
+ case GlobalValue::ExternalLinkage:
+ // If external or appending, declare as a global symbol
+ O << "\t.globl " << name << "\n";
+ // FALL THROUGH
+ case GlobalValue::InternalLinkage:
SwitchSection(".data", I);
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
- if (I->hasInternalLinkage())
- O << ".lcomm " << name << "," << Size << "," << Align;
- else
- O << ".comm " << name << "," << Size;
- O << "\t\t; '" << I->getName() << "'\n";
- } 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';
- break;
- case GlobalValue::AppendingLinkage:
- // FIXME: appending linkage variables should go into a section of
- // their name or something. For now, just emit them as external.
- case GlobalValue::ExternalLinkage:
- // If external or appending, declare as a global symbol
- O << "\t.globl " << name << "\n";
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- SwitchSection(".data", I);
- break;
- default:
- std::cerr << "Unknown linkage type!";
- abort();
- }
-
- EmitAlignment(Align, I);
- O << name << ":\t\t\t\t; '" << I->getName() << "'\n";
- EmitGlobalConstant(C);
+ break;
+ default:
+ std::cerr << "Unknown linkage type!";
+ abort();
}
+
+ EmitAlignment(Align, I);
+ O << name << ":\t\t\t\t; '" << I->getName() << "'\n";
+ EmitGlobalConstant(C);
}
+ }
// Output stubs for dynamically-linked functions
- for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
- i != e; ++i)
- {
- if (PICEnabled) {
- O << ".data\n";
- O << ".section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32\n";
- EmitAlignment(2);
- O << "L" << *i << "$stub:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\tmflr r0\n";
- O << "\tbcl 20,31,L0$" << *i << "\n";
- O << "L0$" << *i << ":\n";
- O << "\tmflr r11\n";
- O << "\taddis r11,r11,ha16(L" << *i << "$lazy_ptr-L0$" << *i << ")\n";
- O << "\tmtlr r0\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";
- O << "L" << *i << "$lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long dyld_stub_binding_helper\n";
- } else {
- O << "\t.section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16\n";
- EmitAlignment(4);
- O << "L" << *i << "$stub:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\tlis r11,ha16(L" << *i << "$lazy_ptr)\n";
- O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
- O << "\tmtctr r12\n";
- O << "\tbctr\n";
- O << "\t.lazy_symbol_pointer\n";
- O << "L" << *i << "$lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long dyld_stub_binding_helper\n";
+ if (PICEnabled) {
+ for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i) {
+ SwitchSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ "pure_instructions,32", 0);
+ EmitAlignment(2);
+ O << "L" << *i << "$stub:\n";
+ O << "\t.indirect_symbol " << *i << "\n";
+ O << "\tmflr r0\n";
+ O << "\tbcl 20,31,L0$" << *i << "\n";
+ O << "L0$" << *i << ":\n";
+ O << "\tmflr r11\n";
+ O << "\taddis r11,r11,ha16(L" << *i << "$lazy_ptr-L0$" << *i << ")\n";
+ O << "\tmtlr r0\n";
+ O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
+ O << "\tmtctr r12\n";
+ O << "\tbctr\n";
+ SwitchSection(".lazy_symbol_pointer", 0);
+ O << "L" << *i << "$lazy_ptr:\n";
+ O << "\t.indirect_symbol " << *i << "\n";
+ O << "\t.long dyld_stub_binding_helper\n";
+ }
+ } else {
+ for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i) {
+ SwitchSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
+ "pure_instructions,16", 0);
+ EmitAlignment(4);
+ O << "L" << *i << "$stub:\n";
+ O << "\t.indirect_symbol " << *i << "\n";
+ O << "\tlis r11,ha16(L" << *i << "$lazy_ptr)\n";
+ O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
+ O << "\tmtctr r12\n";
+ O << "\tbctr\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";
+ }
}
// Funny Darwin hack: This flag tells the linker that no global symbols
SetupMachineFunction(MF);
// Print out constants referenced by the function
- printConstantPool(MF.getConstantPool());
+ EmitConstantPool(MF.getConstantPool());
// Print out header for the function.
O << "\t.csect .text[PR]\n"
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