Add the subset of the libvixl sources that are needed for the A64 disassembler support. These sources come from https://github.com/armvixl/vixl commit 578645f14e122d2b which is VIXL release 1.1. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
110 lines
3.9 KiB
C++
110 lines
3.9 KiB
C++
// Copyright 2013, ARM Limited
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of ARM Limited nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef VIXL_A64_DISASM_A64_H
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#define VIXL_A64_DISASM_A64_H
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#include "globals.h"
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#include "utils.h"
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#include "instructions-a64.h"
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#include "decoder-a64.h"
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namespace vixl {
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class Disassembler: public DecoderVisitor {
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public:
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Disassembler();
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Disassembler(char* text_buffer, int buffer_size);
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virtual ~Disassembler();
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char* GetOutput();
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// Declare all Visitor functions.
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#define DECLARE(A) void Visit##A(Instruction* instr);
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VISITOR_LIST(DECLARE)
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#undef DECLARE
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protected:
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virtual void ProcessOutput(Instruction* instr);
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private:
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void Format(Instruction* instr, const char* mnemonic, const char* format);
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void Substitute(Instruction* instr, const char* string);
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int SubstituteField(Instruction* instr, const char* format);
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int SubstituteRegisterField(Instruction* instr, const char* format);
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int SubstituteImmediateField(Instruction* instr, const char* format);
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int SubstituteLiteralField(Instruction* instr, const char* format);
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int SubstituteBitfieldImmediateField(Instruction* instr, const char* format);
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int SubstituteShiftField(Instruction* instr, const char* format);
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int SubstituteExtendField(Instruction* instr, const char* format);
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int SubstituteConditionField(Instruction* instr, const char* format);
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int SubstitutePCRelAddressField(Instruction* instr, const char* format);
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int SubstituteBranchTargetField(Instruction* instr, const char* format);
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int SubstituteLSRegOffsetField(Instruction* instr, const char* format);
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int SubstitutePrefetchField(Instruction* instr, const char* format);
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inline bool RdIsZROrSP(Instruction* instr) const {
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return (instr->Rd() == kZeroRegCode);
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}
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inline bool RnIsZROrSP(Instruction* instr) const {
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return (instr->Rn() == kZeroRegCode);
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}
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inline bool RmIsZROrSP(Instruction* instr) const {
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return (instr->Rm() == kZeroRegCode);
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}
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inline bool RaIsZROrSP(Instruction* instr) const {
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return (instr->Ra() == kZeroRegCode);
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}
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bool IsMovzMovnImm(unsigned reg_size, uint64_t value);
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void ResetOutput();
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void AppendToOutput(const char* string, ...);
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char* buffer_;
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uint32_t buffer_pos_;
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uint32_t buffer_size_;
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bool own_buffer_;
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};
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class PrintDisassembler: public Disassembler {
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public:
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explicit PrintDisassembler(FILE* stream) : stream_(stream) { }
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~PrintDisassembler() { }
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protected:
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virtual void ProcessOutput(Instruction* instr);
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private:
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FILE *stream_;
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};
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} // namespace vixl
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#endif // VIXL_A64_DISASM_A64_H
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