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https://github.com/c64scene-ar/llvm-6502.git
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13a949071c
1. A delay slot filler that searches for valid instructions
to fill the delay slot with. Previously NOPs would always
be inserted into delay slots.
2. Support for MC based instruction printer added.
3. Support for MC based machine code generation and ELF
file generation. ELF file generation does not yet
completely work as much of the ELF support infrastructure
is still x86/x86-64 specific.
4. General clean up of the MBlaze backend code. Much of the
tablegen code has been cleanup and simplified.
Bug Fixes:
1. Removed duplicate periods from subtarget feature descriptions.
2. Many of the instructions had bad machine code information
in the tablegen files. Much of this has been fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116986 91177308-0d34-0410-b5e6-96231b3b80d8
86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
//===-- MBlazeELFWriterInfo.h - ELF Writer Info for MBlaze ------*- 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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// This file implements ELF writer information for the MBlaze backend.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MBLAZE_ELF_WRITER_INFO_H
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#define MBLAZE_ELF_WRITER_INFO_H
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#include "llvm/Target/TargetELFWriterInfo.h"
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namespace llvm {
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class MBlazeELFWriterInfo : public TargetELFWriterInfo {
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// ELF Relocation types for MBlaze
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enum MBlazeRelocationType {
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R_MICROBLAZE_NONE = 0,
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R_MICROBLAZE_32 = 1,
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R_MICROBLAZE_32_PCREL = 2,
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R_MICROBLAZE_64_PCREL = 3,
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R_MICROBLAZE_32_PCREL_LO = 4,
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R_MICROBLAZE_64 = 5,
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R_MICROBLAZE_32_LO = 6,
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R_MICROBLAZE_SRO32 = 7,
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R_MICROBLAZE_SRW32 = 8,
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R_MICROBLAZE_64_NONE = 9,
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R_MICROBLAZE_32_SYM_OP_SYM = 10,
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R_MICROBLAZE_GNU_VTINHERIT = 11,
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R_MICROBLAZE_GNU_VTENTRY = 12,
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R_MICROBLAZE_GOTPC_64 = 13,
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R_MICROBLAZE_GOT_64 = 14,
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R_MICROBLAZE_PLT_64 = 15,
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R_MICROBLAZE_REL = 16,
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R_MICROBLAZE_JUMP_SLOT = 17,
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R_MICROBLAZE_GLOB_DAT = 18,
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R_MICROBLAZE_GOTOFF_64 = 19,
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R_MICROBLAZE_GOTOFF_32 = 20,
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R_MICROBLAZE_COPY = 21
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};
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public:
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MBlazeELFWriterInfo(TargetMachine &TM);
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virtual ~MBlazeELFWriterInfo();
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/// getRelocationType - Returns the target specific ELF Relocation type.
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/// 'MachineRelTy' contains the object code independent relocation type
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virtual unsigned getRelocationType(unsigned MachineRelTy) const;
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/// hasRelocationAddend - True if the target uses an addend in the
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/// ELF relocation entry.
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virtual bool hasRelocationAddend() const { return false; }
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/// getDefaultAddendForRelTy - Gets the default addend value for a
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/// relocation entry based on the target ELF relocation type.
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virtual long int getDefaultAddendForRelTy(unsigned RelTy,
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long int Modifier = 0) const;
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/// getRelTySize - Returns the size of relocatable field in bits
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virtual unsigned getRelocationTySize(unsigned RelTy) const;
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/// isPCRelativeRel - True if the relocation type is pc relative
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virtual bool isPCRelativeRel(unsigned RelTy) const;
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/// getJumpTableRelocationTy - Returns the machine relocation type used
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/// to reference a jumptable.
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virtual unsigned getAbsoluteLabelMachineRelTy() const;
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/// computeRelocation - Some relocatable fields could be relocated
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/// directly, avoiding the relocation symbol emission, compute the
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/// final relocation value for this symbol.
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virtual long int computeRelocation(unsigned SymOffset, unsigned RelOffset,
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unsigned RelTy) const;
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};
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} // end llvm namespace
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#endif // MBLAZE_ELF_WRITER_INFO_H
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