PPC: MCize most of the darwin PIC emission.
The last remaining bit is "bcl 20, 31, AnonSymbol", which I couldn't find the
instruction definition for. Only whitespace changes in assembly output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168541 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index 3f1e67b..f7a64f8 100644
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -55,6 +55,7 @@
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/MapVector.h"
+#include "llvm/ADT/VariadicFunction.h"
using namespace llvm;
namespace {
@@ -558,6 +559,21 @@
return Ctx.GetOrCreateSymbol(Sym->getName() + "$tmp");
}
+namespace {
+ // Helper function to emit a custom MCInst.
+ void emitMCInstImpl(MCStreamer &OutStreamer, unsigned Opcode,
+ ArrayRef<const MCOperand *> Ops) {
+ MCInst TmpInst;
+ TmpInst.setOpcode(Opcode);
+ for (unsigned I = 0, E = Ops.size(); I != E; ++I)
+ TmpInst.addOperand(*Ops[I]);
+ OutStreamer.EmitInstruction(TmpInst);
+ }
+
+ const VariadicFunction2<void, MCStreamer &, unsigned, MCOperand,
+ emitMCInstImpl> emitMCInst = {};
+}
+
void PPCDarwinAsmPrinter::
EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64;
@@ -586,32 +602,52 @@
OutStreamer.EmitLabel(Stub);
OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
+
+ // mflr r0
+ emitMCInst(OutStreamer, PPC::MFLR, MCOperand::CreateReg(PPC::R0));
// FIXME: MCize this.
- OutStreamer.EmitRawText(StringRef("\tmflr r0"));
- OutStreamer.EmitRawText("\tbcl 20,31," + Twine(AnonSymbol->getName()));
+ OutStreamer.EmitRawText("\tbcl 20, 31, " + Twine(AnonSymbol->getName()));
OutStreamer.EmitLabel(AnonSymbol);
- OutStreamer.EmitRawText(StringRef("\tmflr r11"));
- OutStreamer.EmitRawText("\taddis r11,r11,ha16("+Twine(LazyPtr->getName())+
- "-" + AnonSymbol->getName() + ")");
- OutStreamer.EmitRawText(StringRef("\tmtlr r0"));
-
- if (isPPC64)
- OutStreamer.EmitRawText("\tldu r12,lo16(" + Twine(LazyPtr->getName()) +
- "-" + AnonSymbol->getName() + ")(r11)");
- else
- OutStreamer.EmitRawText("\tlwzu r12,lo16(" + Twine(LazyPtr->getName()) +
- "-" + AnonSymbol->getName() + ")(r11)");
- OutStreamer.EmitRawText(StringRef("\tmtctr r12"));
- OutStreamer.EmitRawText(StringRef("\tbctr"));
-
+ // mflr r11
+ emitMCInst(OutStreamer, PPC::MFLR, MCOperand::CreateReg(PPC::R11));
+ // addis r11, r11, ha16(LazyPtr - AnonSymbol)
+ MCOperand Sub = MCOperand::CreateExpr(
+ MCBinaryExpr::CreateSub(
+ MCSymbolRefExpr::Create(LazyPtr, OutContext),
+ MCSymbolRefExpr::Create(AnonSymbol, OutContext),
+ OutContext));
+ emitMCInst(OutStreamer, PPC::ADDIS, MCOperand::CreateReg(PPC::R11),
+ MCOperand::CreateReg(PPC::R11), Sub);
+ // mtlr r0
+ emitMCInst(OutStreamer, PPC::MTLR, MCOperand::CreateReg(PPC::R0));
+
+ if (isPPC64) {
+ // ldu r12, lo16(LazyPtr - AnonSymbol)(r11)
+ emitMCInst(OutStreamer, PPC::LDU, MCOperand::CreateReg(PPC::R12),
+ Sub, Sub, MCOperand::CreateReg(PPC::R11));
+ } else {
+ // lwzu r12, lo16(LazyPtr - AnonSymbol)(r11)
+ emitMCInst(OutStreamer, PPC::LWZU, MCOperand::CreateReg(PPC::R12),
+ Sub, Sub, MCOperand::CreateReg(PPC::R11));
+ }
+ // mtctr r12
+ emitMCInst(OutStreamer, PPC::MTCTR, MCOperand::CreateReg(PPC::R12));
+ // bctr
+ emitMCInst(OutStreamer, PPC::BCTR);
+
OutStreamer.SwitchSection(LSPSection);
OutStreamer.EmitLabel(LazyPtr);
OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
-
- if (isPPC64)
- OutStreamer.EmitRawText(StringRef("\t.quad dyld_stub_binding_helper"));
- else
- OutStreamer.EmitRawText(StringRef("\t.long dyld_stub_binding_helper"));
+
+ MCSymbol *DyldStubBindingHelper =
+ OutContext.GetOrCreateSymbol(StringRef("dyld_stub_binding_helper"));
+ if (isPPC64) {
+ // .quad dyld_stub_binding_helper
+ OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 8);
+ } else {
+ // .long dyld_stub_binding_helper
+ OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 4);
+ }
}
OutStreamer.AddBlankLine();
return;
@@ -631,23 +667,44 @@
EmitAlignment(4);
OutStreamer.EmitLabel(Stub);
OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
- OutStreamer.EmitRawText("\tlis r11,ha16(" + Twine(LazyPtr->getName()) +")");
- if (isPPC64)
- OutStreamer.EmitRawText("\tldu r12,lo16(" + Twine(LazyPtr->getName()) +
- ")(r11)");
- else
- OutStreamer.EmitRawText("\tlwzu r12,lo16(" + Twine(LazyPtr->getName()) +
- ")(r11)");
- OutStreamer.EmitRawText(StringRef("\tmtctr r12"));
- OutStreamer.EmitRawText(StringRef("\tbctr"));
+ // lis r11, ha16(LazyPtr)
+ MCOperand LazyPtrHa16 =
+ MCOperand::CreateExpr(
+ MCSymbolRefExpr::Create(LazyPtr, MCSymbolRefExpr::VK_PPC_DARWIN_HA16,
+ OutContext));
+ emitMCInst(OutStreamer, PPC::LIS, MCOperand::CreateReg(PPC::R11),
+ LazyPtrHa16);
+
+ MCOperand LazyPtrLo16 =
+ MCOperand::CreateExpr(
+ MCSymbolRefExpr::Create(LazyPtr, MCSymbolRefExpr::VK_PPC_DARWIN_LO16,
+ OutContext));
+ if (isPPC64) {
+ // ldu r12, lo16(LazyPtr)(r11)
+ emitMCInst(OutStreamer, PPC::LDU, MCOperand::CreateReg(PPC::R12),
+ LazyPtrLo16, LazyPtrLo16, MCOperand::CreateReg(PPC::R11));
+ } else {
+ // lwzu r12, lo16(LazyPtr)(r11)
+ emitMCInst(OutStreamer, PPC::LWZU, MCOperand::CreateReg(PPC::R12),
+ LazyPtrLo16, LazyPtrLo16, MCOperand::CreateReg(PPC::R11));
+ }
+ // mtctr r12
+ emitMCInst(OutStreamer, PPC::MTCTR, MCOperand::CreateReg(PPC::R12));
+ // bctr
+ emitMCInst(OutStreamer, PPC::BCTR);
OutStreamer.SwitchSection(LSPSection);
OutStreamer.EmitLabel(LazyPtr);
OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
-
- if (isPPC64)
- OutStreamer.EmitRawText(StringRef("\t.quad dyld_stub_binding_helper"));
- else
- OutStreamer.EmitRawText(StringRef("\t.long dyld_stub_binding_helper"));
+
+ MCSymbol *DyldStubBindingHelper =
+ OutContext.GetOrCreateSymbol(StringRef("dyld_stub_binding_helper"));
+ if (isPPC64) {
+ // .quad dyld_stub_binding_helper
+ OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 8);
+ } else {
+ // .long dyld_stub_binding_helper
+ OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 4);
+ }
}
OutStreamer.AddBlankLine();