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author | Rafael Espindola <rafael.espindola@gmail.com> | 2010-11-28 21:16:39 +0000 |
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committer | Rafael Espindola <rafael.espindola@gmail.com> | 2010-11-28 21:16:39 +0000 |
commit | d652dbe72044b07a681b579a0a938c613ef15ae8 (patch) | |
tree | 4572a05949cbf147dea5e70376db5ca680e15248 /lib/Target/X86/X86MCInstLower.cpp | |
parent | 695ab519e4129ba1053383364a9241ec4c68904b (diff) | |
download | llvm-d652dbe72044b07a681b579a0a938c613ef15ae8.tar.gz llvm-d652dbe72044b07a681b579a0a938c613ef15ae8.tar.bz2 llvm-d652dbe72044b07a681b579a0a938c613ef15ae8.tar.xz |
Move lowering of TLS_addr32 and TLS_addr64 to X86MCInstLower.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120263 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86MCInstLower.cpp')
-rw-r--r-- | lib/Target/X86/X86MCInstLower.cpp | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/lib/Target/X86/X86MCInstLower.cpp b/lib/Target/X86/X86MCInstLower.cpp index 05a5de6ea6..3ca87ed877 100644 --- a/lib/Target/X86/X86MCInstLower.cpp +++ b/lib/Target/X86/X86MCInstLower.cpp @@ -525,6 +525,66 @@ ReSimplify: } } +static void LowerTlsAddr(MCStreamer &OutStreamer, + X86MCInstLower &MCInstLowering, + const MachineInstr &MI) { + bool is64Bits = MI.getOpcode() == X86::TLS_addr64; + MCContext &context = OutStreamer.getContext(); + + if (is64Bits) { + MCInst prefix; + prefix.setOpcode(X86::DATA16_PREFIX); + OutStreamer.EmitInstruction(prefix); + } + MCSymbol *sym = MCInstLowering.GetSymbolFromOperand(MI.getOperand(3)); + const MCSymbolRefExpr *symRef = + MCSymbolRefExpr::Create(sym, MCSymbolRefExpr::VK_TLSGD, context); + + MCInst LEA; + if (is64Bits) { + LEA.setOpcode(X86::LEA64r); + LEA.addOperand(MCOperand::CreateReg(X86::RDI)); // dest + LEA.addOperand(MCOperand::CreateReg(X86::RIP)); // base + LEA.addOperand(MCOperand::CreateImm(1)); // scale + LEA.addOperand(MCOperand::CreateReg(0)); // index + LEA.addOperand(MCOperand::CreateExpr(symRef)); // disp + LEA.addOperand(MCOperand::CreateReg(0)); // seg + } else { + LEA.setOpcode(X86::LEA32r); + LEA.addOperand(MCOperand::CreateReg(X86::EAX)); // dest + LEA.addOperand(MCOperand::CreateReg(0)); // base + LEA.addOperand(MCOperand::CreateImm(1)); // scale + LEA.addOperand(MCOperand::CreateReg(X86::EBX)); // index + LEA.addOperand(MCOperand::CreateExpr(symRef)); // disp + LEA.addOperand(MCOperand::CreateReg(0)); // seg + } + OutStreamer.EmitInstruction(LEA); + + if (is64Bits) { + MCInst prefix; + prefix.setOpcode(X86::DATA16_PREFIX); + OutStreamer.EmitInstruction(prefix); + prefix.setOpcode(X86::DATA16_PREFIX); + OutStreamer.EmitInstruction(prefix); + prefix.setOpcode(X86::REX64_PREFIX); + OutStreamer.EmitInstruction(prefix); + } + + MCInst call; + if (is64Bits) + call.setOpcode(X86::CALL64pcrel32); + else + call.setOpcode(X86::CALLpcrel32); + StringRef name = is64Bits ? "__tls_get_addr" : "___tls_get_addr"; + MCSymbol *tlsGetAddr = context.GetOrCreateSymbol(name); + const MCSymbolRefExpr *tlsRef = + MCSymbolRefExpr::Create(tlsGetAddr, + MCSymbolRefExpr::VK_PLT, + context); + + call.addOperand(MCOperand::CreateExpr(tlsRef)); + OutStreamer.EmitInstruction(call); +} void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) { X86MCInstLower MCInstLowering(Mang, *MF, *this); @@ -559,7 +619,11 @@ void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) { // Lower these as normal, but add some comments. OutStreamer.AddComment("TAILCALL"); break; - + + case X86::TLS_addr32: + case X86::TLS_addr64: + return LowerTlsAddr(OutStreamer, MCInstLowering, *MI); + case X86::MOVPC32r: { MCInst TmpInst; // This is a pseudo op for a two instruction sequence with a label, which |