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https://github.com/c64scene-ar/llvm-6502.git
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3fea427a63
Summary: When generating MIPS assembly, LLVM always overrides the default assembler options by emitting the '.set noreorder', '.set nomacro' and '.set noat' directives, while GCC uses the default options if an assembly-level function contains inline assembly code. This becomes a problem when the code generated by LLVM is interleaved with inline assembly which assumes GCC-like assembler options (from Linux, for example). This patch fixes these conflicts by setting the appropriate assembler options at the beginning of an inline asm block and popping them at the end. Reviewers: dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D6637 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224425 91177308-0d34-0410-b5e6-96231b3b80d8
151 lines
5.5 KiB
C++
151 lines
5.5 KiB
C++
//===-- MipsAsmPrinter.h - Mips LLVM Assembly Printer ----------*- C++ -*--===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Mips Assembly printer class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_MIPS_MIPSASMPRINTER_H
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#define LLVM_LIB_TARGET_MIPS_MIPSASMPRINTER_H
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#include "Mips16HardFloatInfo.h"
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#include "MipsMCInstLower.h"
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#include "MipsMachineFunction.h"
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#include "MipsSubtarget.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class MCStreamer;
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class MachineInstr;
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class MachineBasicBlock;
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class MipsTargetStreamer;
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class Module;
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class raw_ostream;
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class LLVM_LIBRARY_VISIBILITY MipsAsmPrinter : public AsmPrinter {
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MipsTargetStreamer &getTargetStreamer() const;
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void EmitInstrWithMacroNoAT(const MachineInstr *MI);
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private:
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// tblgen'erated function.
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bool emitPseudoExpansionLowering(MCStreamer &OutStreamer,
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const MachineInstr *MI);
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// Emit PseudoReturn, PseudoReturn64, PseudoIndirectBranch,
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// and PseudoIndirectBranch64 as a JR, JR_MM, JALR, or JALR64 as appropriate
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// for the target.
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void emitPseudoIndirectBranch(MCStreamer &OutStreamer,
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const MachineInstr *MI);
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// lowerOperand - Convert a MachineOperand into the equivalent MCOperand.
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bool lowerOperand(const MachineOperand &MO, MCOperand &MCOp);
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/// MCP - Keep a pointer to constantpool entries of the current
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/// MachineFunction.
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const MachineConstantPool *MCP;
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/// InConstantPool - Maintain state when emitting a sequence of constant
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/// pool entries so we can properly mark them as data regions.
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bool InConstantPool;
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std::map<const char *, const llvm::Mips16HardFloatInfo::FuncSignature *>
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StubsNeeded;
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void emitInlineAsmStart(const MCSubtargetInfo &StartInfo) const override;
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void emitInlineAsmEnd(const MCSubtargetInfo &StartInfo,
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const MCSubtargetInfo *EndInfo) const override;
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void EmitJal(MCSymbol *Symbol);
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void EmitInstrReg(unsigned Opcode, unsigned Reg);
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void EmitInstrRegReg(unsigned Opcode, unsigned Reg1, unsigned Reg2);
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void EmitInstrRegRegReg(unsigned Opcode, unsigned Reg1, unsigned Reg2,
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unsigned Reg3);
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void EmitMovFPIntPair(unsigned MovOpc, unsigned Reg1, unsigned Reg2,
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unsigned FPReg1, unsigned FPReg2, bool LE);
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void EmitSwapFPIntParams(Mips16HardFloatInfo::FPParamVariant, bool LE,
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bool ToFP);
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void EmitSwapFPIntRetval(Mips16HardFloatInfo::FPReturnVariant, bool LE);
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void EmitFPCallStub(const char *, const Mips16HardFloatInfo::FuncSignature *);
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void NaClAlignIndirectJumpTargets(MachineFunction &MF);
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bool isLongBranchPseudo(int Opcode) const;
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public:
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const MipsSubtarget *Subtarget;
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const MipsFunctionInfo *MipsFI;
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MipsMCInstLower MCInstLowering;
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// We initialize the subtarget here and in runOnMachineFunction
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// since there are certain target specific flags (ABI) that could
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// reside on the TargetMachine, but are on the subtarget currently
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// and we need them for the beginning of file output before we've
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// seen a single function.
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explicit MipsAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
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: AsmPrinter(TM, Streamer), MCP(nullptr), InConstantPool(false),
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Subtarget(&TM.getSubtarget<MipsSubtarget>()), MCInstLowering(*this) {}
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const char *getPassName() const override {
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return "Mips Assembly Printer";
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}
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bool runOnMachineFunction(MachineFunction &MF) override;
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void EmitConstantPool() override {
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bool UsingConstantPools =
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(Subtarget->inMips16Mode() && Subtarget->useConstantIslands());
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if (!UsingConstantPools)
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AsmPrinter::EmitConstantPool();
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// we emit constant pools customly!
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}
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void EmitInstruction(const MachineInstr *MI) override;
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void printSavedRegsBitmask();
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void emitFrameDirective();
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const char *getCurrentABIString() const;
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void EmitFunctionEntryLabel() override;
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void EmitFunctionBodyStart() override;
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void EmitFunctionBodyEnd() override;
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bool isBlockOnlyReachableByFallthrough(
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const MachineBasicBlock* MBB) const override;
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O) override;
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bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O) override;
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void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printUnsignedImm(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printUnsignedImm8(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printMemOperandEA(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
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const char *Modifier = nullptr);
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void printRegisterList(const MachineInstr *MI, int opNum, raw_ostream &O);
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void EmitStartOfAsmFile(Module &M) override;
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void EmitEndOfAsmFile(Module &M) override;
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void PrintDebugValueComment(const MachineInstr *MI, raw_ostream &OS);
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};
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}
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#endif
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