forked from OSchip/llvm-project
719 lines
21 KiB
C++
719 lines
21 KiB
C++
//===-- MBlazeDisassembler.cpp - Disassembler for MicroBlaze -------------===//
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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 is part of the MBlaze Disassembler. It contains code to translate
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// the data produced by the decoder into MCInsts.
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//
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//===----------------------------------------------------------------------===//
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#include "MBlazeDisassembler.h"
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#include "MBlaze.h"
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#include "llvm/MC/MCDisassembler.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstrDesc.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/MemoryObject.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/raw_ostream.h"
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// #include "MBlazeGenDecoderTables.inc"
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// #include "MBlazeGenRegisterNames.inc"
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namespace llvm {
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extern const MCInstrDesc MBlazeInsts[];
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}
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using namespace llvm;
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const uint16_t UNSUPPORTED = -1;
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static const uint16_t mblazeBinary2Opcode[] = {
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MBlaze::ADD, MBlaze::RSUB, MBlaze::ADDC, MBlaze::RSUBC, //00,01,02,03
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MBlaze::ADDK, MBlaze::RSUBK, MBlaze::ADDKC, MBlaze::RSUBKC, //04,05,06,07
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MBlaze::ADDI, MBlaze::RSUBI, MBlaze::ADDIC, MBlaze::RSUBIC, //08,09,0A,0B
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MBlaze::ADDIK, MBlaze::RSUBIK, MBlaze::ADDIKC, MBlaze::RSUBIKC, //0C,0D,0E,0F
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MBlaze::MUL, MBlaze::BSRL, MBlaze::IDIV, MBlaze::GETD, //10,11,12,13
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UNSUPPORTED, UNSUPPORTED, MBlaze::FADD, UNSUPPORTED, //14,15,16,17
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MBlaze::MULI, MBlaze::BSRLI, UNSUPPORTED, MBlaze::GET, //18,19,1A,1B
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UNSUPPORTED, UNSUPPORTED, UNSUPPORTED, UNSUPPORTED, //1C,1D,1E,1F
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MBlaze::OR, MBlaze::AND, MBlaze::XOR, MBlaze::ANDN, //20,21,22,23
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MBlaze::SEXT8, MBlaze::MFS, MBlaze::BR, MBlaze::BEQ, //24,25,26,27
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MBlaze::ORI, MBlaze::ANDI, MBlaze::XORI, MBlaze::ANDNI, //28,29,2A,2B
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MBlaze::IMM, MBlaze::RTSD, MBlaze::BRI, MBlaze::BEQI, //2C,2D,2E,2F
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MBlaze::LBU, MBlaze::LHU, MBlaze::LW, UNSUPPORTED, //30,31,32,33
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MBlaze::SB, MBlaze::SH, MBlaze::SW, UNSUPPORTED, //34,35,36,37
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MBlaze::LBUI, MBlaze::LHUI, MBlaze::LWI, UNSUPPORTED, //38,39,3A,3B
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MBlaze::SBI, MBlaze::SHI, MBlaze::SWI, UNSUPPORTED, //3C,3D,3E,3F
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};
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static unsigned getRD(uint32_t insn) {
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if (!isMBlazeRegister((insn>>21)&0x1F))
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return UNSUPPORTED;
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return getMBlazeRegisterFromNumbering((insn>>21)&0x1F);
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}
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static unsigned getRA(uint32_t insn) {
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if (!getMBlazeRegisterFromNumbering((insn>>16)&0x1F))
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return UNSUPPORTED;
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return getMBlazeRegisterFromNumbering((insn>>16)&0x1F);
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}
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static unsigned getRB(uint32_t insn) {
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if (!getMBlazeRegisterFromNumbering((insn>>11)&0x1F))
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return UNSUPPORTED;
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return getMBlazeRegisterFromNumbering((insn>>11)&0x1F);
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}
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static int64_t getRS(uint32_t insn) {
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if (!isSpecialMBlazeRegister(insn&0x3FFF))
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return UNSUPPORTED;
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return getSpecialMBlazeRegisterFromNumbering(insn&0x3FFF);
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}
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static int64_t getIMM(uint32_t insn) {
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int16_t val = (insn & 0xFFFF);
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return val;
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}
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static int64_t getSHT(uint32_t insn) {
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int16_t val = (insn & 0x1F);
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return val;
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}
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static unsigned getFLAGS(int32_t insn) {
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return (insn & 0x7FF);
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}
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static int64_t getFSL(uint32_t insn) {
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int16_t val = (insn & 0xF);
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return val;
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}
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static unsigned decodeMUL(uint32_t insn) {
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switch (getFLAGS(insn)) {
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default: return UNSUPPORTED;
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case 0: return MBlaze::MUL;
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case 1: return MBlaze::MULH;
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case 2: return MBlaze::MULHSU;
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case 3: return MBlaze::MULHU;
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}
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}
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static unsigned decodeSEXT(uint32_t insn) {
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switch (insn&0x7FF) {
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default: return UNSUPPORTED;
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case 0x60: return MBlaze::SEXT8;
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case 0x68: return MBlaze::WIC;
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case 0x64: return MBlaze::WDC;
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case 0x66: return MBlaze::WDCC;
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case 0x74: return MBlaze::WDCF;
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case 0x61: return MBlaze::SEXT16;
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case 0x41: return MBlaze::SRL;
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case 0x21: return MBlaze::SRC;
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case 0x01: return MBlaze::SRA;
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case 0xE0: return MBlaze::CLZ;
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}
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}
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static unsigned decodeBEQ(uint32_t insn) {
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switch ((insn>>21)&0x1F) {
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default: return UNSUPPORTED;
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case 0x00: return MBlaze::BEQ;
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case 0x10: return MBlaze::BEQD;
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case 0x05: return MBlaze::BGE;
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case 0x15: return MBlaze::BGED;
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case 0x04: return MBlaze::BGT;
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case 0x14: return MBlaze::BGTD;
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case 0x03: return MBlaze::BLE;
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case 0x13: return MBlaze::BLED;
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case 0x02: return MBlaze::BLT;
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case 0x12: return MBlaze::BLTD;
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case 0x01: return MBlaze::BNE;
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case 0x11: return MBlaze::BNED;
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}
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}
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static unsigned decodeBEQI(uint32_t insn) {
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switch ((insn>>21)&0x1F) {
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default: return UNSUPPORTED;
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case 0x00: return MBlaze::BEQI;
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case 0x10: return MBlaze::BEQID;
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case 0x05: return MBlaze::BGEI;
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case 0x15: return MBlaze::BGEID;
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case 0x04: return MBlaze::BGTI;
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case 0x14: return MBlaze::BGTID;
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case 0x03: return MBlaze::BLEI;
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case 0x13: return MBlaze::BLEID;
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case 0x02: return MBlaze::BLTI;
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case 0x12: return MBlaze::BLTID;
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case 0x01: return MBlaze::BNEI;
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case 0x11: return MBlaze::BNEID;
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}
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}
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static unsigned decodeBR(uint32_t insn) {
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switch ((insn>>16)&0x1F) {
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default: return UNSUPPORTED;
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case 0x00: return MBlaze::BR;
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case 0x08: return MBlaze::BRA;
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case 0x0C: return MBlaze::BRK;
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case 0x10: return MBlaze::BRD;
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case 0x14: return MBlaze::BRLD;
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case 0x18: return MBlaze::BRAD;
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case 0x1C: return MBlaze::BRALD;
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}
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}
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static unsigned decodeBRI(uint32_t insn) {
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switch (insn&0x3FFFFFF) {
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default: break;
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case 0x0020004: return MBlaze::IDMEMBAR;
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case 0x0220004: return MBlaze::DMEMBAR;
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case 0x0420004: return MBlaze::IMEMBAR;
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}
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switch ((insn>>16)&0x1F) {
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default: return UNSUPPORTED;
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case 0x00: return MBlaze::BRI;
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case 0x08: return MBlaze::BRAI;
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case 0x0C: return MBlaze::BRKI;
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case 0x10: return MBlaze::BRID;
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case 0x14: return MBlaze::BRLID;
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case 0x18: return MBlaze::BRAID;
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case 0x1C: return MBlaze::BRALID;
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}
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}
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static unsigned decodeBSRL(uint32_t insn) {
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switch ((insn>>9)&0x3) {
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default: return UNSUPPORTED;
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case 0x2: return MBlaze::BSLL;
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case 0x1: return MBlaze::BSRA;
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case 0x0: return MBlaze::BSRL;
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}
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}
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static unsigned decodeBSRLI(uint32_t insn) {
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switch ((insn>>9)&0x3) {
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default: return UNSUPPORTED;
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case 0x2: return MBlaze::BSLLI;
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case 0x1: return MBlaze::BSRAI;
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case 0x0: return MBlaze::BSRLI;
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}
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}
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static unsigned decodeRSUBK(uint32_t insn) {
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switch (getFLAGS(insn)) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::RSUBK;
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case 0x1: return MBlaze::CMP;
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case 0x3: return MBlaze::CMPU;
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}
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}
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static unsigned decodeFADD(uint32_t insn) {
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switch (getFLAGS(insn)) {
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default: return UNSUPPORTED;
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case 0x000: return MBlaze::FADD;
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case 0x080: return MBlaze::FRSUB;
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case 0x100: return MBlaze::FMUL;
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case 0x180: return MBlaze::FDIV;
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case 0x200: return MBlaze::FCMP_UN;
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case 0x210: return MBlaze::FCMP_LT;
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case 0x220: return MBlaze::FCMP_EQ;
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case 0x230: return MBlaze::FCMP_LE;
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case 0x240: return MBlaze::FCMP_GT;
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case 0x250: return MBlaze::FCMP_NE;
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case 0x260: return MBlaze::FCMP_GE;
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case 0x280: return MBlaze::FLT;
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case 0x300: return MBlaze::FINT;
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case 0x380: return MBlaze::FSQRT;
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}
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}
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static unsigned decodeGET(uint32_t insn) {
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switch ((insn>>10)&0x3F) {
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default: return UNSUPPORTED;
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case 0x00: return MBlaze::GET;
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case 0x01: return MBlaze::EGET;
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case 0x02: return MBlaze::AGET;
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case 0x03: return MBlaze::EAGET;
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case 0x04: return MBlaze::TGET;
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case 0x05: return MBlaze::TEGET;
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case 0x06: return MBlaze::TAGET;
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case 0x07: return MBlaze::TEAGET;
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case 0x08: return MBlaze::CGET;
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case 0x09: return MBlaze::ECGET;
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case 0x0A: return MBlaze::CAGET;
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case 0x0B: return MBlaze::ECAGET;
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case 0x0C: return MBlaze::TCGET;
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case 0x0D: return MBlaze::TECGET;
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case 0x0E: return MBlaze::TCAGET;
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case 0x0F: return MBlaze::TECAGET;
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case 0x10: return MBlaze::NGET;
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case 0x11: return MBlaze::NEGET;
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case 0x12: return MBlaze::NAGET;
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case 0x13: return MBlaze::NEAGET;
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case 0x14: return MBlaze::TNGET;
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case 0x15: return MBlaze::TNEGET;
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case 0x16: return MBlaze::TNAGET;
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case 0x17: return MBlaze::TNEAGET;
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case 0x18: return MBlaze::NCGET;
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case 0x19: return MBlaze::NECGET;
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case 0x1A: return MBlaze::NCAGET;
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case 0x1B: return MBlaze::NECAGET;
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case 0x1C: return MBlaze::TNCGET;
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case 0x1D: return MBlaze::TNECGET;
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case 0x1E: return MBlaze::TNCAGET;
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case 0x1F: return MBlaze::TNECAGET;
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case 0x20: return MBlaze::PUT;
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case 0x22: return MBlaze::APUT;
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case 0x24: return MBlaze::TPUT;
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case 0x26: return MBlaze::TAPUT;
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case 0x28: return MBlaze::CPUT;
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case 0x2A: return MBlaze::CAPUT;
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case 0x2C: return MBlaze::TCPUT;
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case 0x2E: return MBlaze::TCAPUT;
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case 0x30: return MBlaze::NPUT;
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case 0x32: return MBlaze::NAPUT;
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case 0x34: return MBlaze::TNPUT;
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case 0x36: return MBlaze::TNAPUT;
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case 0x38: return MBlaze::NCPUT;
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case 0x3A: return MBlaze::NCAPUT;
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case 0x3C: return MBlaze::TNCPUT;
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case 0x3E: return MBlaze::TNCAPUT;
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}
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}
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static unsigned decodeGETD(uint32_t insn) {
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switch ((insn>>5)&0x3F) {
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default: return UNSUPPORTED;
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case 0x00: return MBlaze::GETD;
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case 0x01: return MBlaze::EGETD;
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case 0x02: return MBlaze::AGETD;
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case 0x03: return MBlaze::EAGETD;
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case 0x04: return MBlaze::TGETD;
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case 0x05: return MBlaze::TEGETD;
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case 0x06: return MBlaze::TAGETD;
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case 0x07: return MBlaze::TEAGETD;
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case 0x08: return MBlaze::CGETD;
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case 0x09: return MBlaze::ECGETD;
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case 0x0A: return MBlaze::CAGETD;
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case 0x0B: return MBlaze::ECAGETD;
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case 0x0C: return MBlaze::TCGETD;
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case 0x0D: return MBlaze::TECGETD;
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case 0x0E: return MBlaze::TCAGETD;
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case 0x0F: return MBlaze::TECAGETD;
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case 0x10: return MBlaze::NGETD;
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case 0x11: return MBlaze::NEGETD;
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case 0x12: return MBlaze::NAGETD;
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case 0x13: return MBlaze::NEAGETD;
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case 0x14: return MBlaze::TNGETD;
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case 0x15: return MBlaze::TNEGETD;
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case 0x16: return MBlaze::TNAGETD;
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case 0x17: return MBlaze::TNEAGETD;
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case 0x18: return MBlaze::NCGETD;
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case 0x19: return MBlaze::NECGETD;
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case 0x1A: return MBlaze::NCAGETD;
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case 0x1B: return MBlaze::NECAGETD;
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case 0x1C: return MBlaze::TNCGETD;
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case 0x1D: return MBlaze::TNECGETD;
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case 0x1E: return MBlaze::TNCAGETD;
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case 0x1F: return MBlaze::TNECAGETD;
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case 0x20: return MBlaze::PUTD;
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case 0x22: return MBlaze::APUTD;
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case 0x24: return MBlaze::TPUTD;
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case 0x26: return MBlaze::TAPUTD;
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case 0x28: return MBlaze::CPUTD;
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case 0x2A: return MBlaze::CAPUTD;
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case 0x2C: return MBlaze::TCPUTD;
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case 0x2E: return MBlaze::TCAPUTD;
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case 0x30: return MBlaze::NPUTD;
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case 0x32: return MBlaze::NAPUTD;
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case 0x34: return MBlaze::TNPUTD;
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case 0x36: return MBlaze::TNAPUTD;
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case 0x38: return MBlaze::NCPUTD;
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case 0x3A: return MBlaze::NCAPUTD;
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case 0x3C: return MBlaze::TNCPUTD;
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case 0x3E: return MBlaze::TNCAPUTD;
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}
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}
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static unsigned decodeIDIV(uint32_t insn) {
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switch (insn&0x3) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::IDIV;
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case 0x2: return MBlaze::IDIVU;
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}
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}
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static unsigned decodeLBU(uint32_t insn) {
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switch ((insn>>9)&0x1) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::LBU;
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case 0x1: return MBlaze::LBUR;
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}
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}
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static unsigned decodeLHU(uint32_t insn) {
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switch ((insn>>9)&0x1) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::LHU;
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case 0x1: return MBlaze::LHUR;
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}
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}
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static unsigned decodeLW(uint32_t insn) {
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switch ((insn>>9)&0x3) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::LW;
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case 0x1: return MBlaze::LWR;
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case 0x2: return MBlaze::LWX;
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}
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}
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static unsigned decodeSB(uint32_t insn) {
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switch ((insn>>9)&0x1) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::SB;
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case 0x1: return MBlaze::SBR;
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}
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}
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static unsigned decodeSH(uint32_t insn) {
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switch ((insn>>9)&0x1) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::SH;
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case 0x1: return MBlaze::SHR;
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}
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}
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static unsigned decodeSW(uint32_t insn) {
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switch ((insn>>9)&0x3) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::SW;
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case 0x1: return MBlaze::SWR;
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case 0x2: return MBlaze::SWX;
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}
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}
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static unsigned decodeMFS(uint32_t insn) {
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switch ((insn>>15)&0x1) {
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default: return UNSUPPORTED;
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case 0x0:
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switch ((insn>>16)&0x1) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::MSRSET;
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case 0x1: return MBlaze::MSRCLR;
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}
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case 0x1:
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switch ((insn>>14)&0x1) {
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default: return UNSUPPORTED;
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case 0x0: return MBlaze::MFS;
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case 0x1: return MBlaze::MTS;
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}
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}
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}
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static unsigned decodeOR(uint32_t insn) {
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switch (getFLAGS(insn)) {
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default: return UNSUPPORTED;
|
|
case 0x000: return MBlaze::OR;
|
|
case 0x400: return MBlaze::PCMPBF;
|
|
}
|
|
}
|
|
|
|
static unsigned decodeXOR(uint32_t insn) {
|
|
switch (getFLAGS(insn)) {
|
|
default: return UNSUPPORTED;
|
|
case 0x000: return MBlaze::XOR;
|
|
case 0x400: return MBlaze::PCMPEQ;
|
|
}
|
|
}
|
|
|
|
static unsigned decodeANDN(uint32_t insn) {
|
|
switch (getFLAGS(insn)) {
|
|
default: return UNSUPPORTED;
|
|
case 0x000: return MBlaze::ANDN;
|
|
case 0x400: return MBlaze::PCMPNE;
|
|
}
|
|
}
|
|
|
|
static unsigned decodeRTSD(uint32_t insn) {
|
|
switch ((insn>>21)&0x1F) {
|
|
default: return UNSUPPORTED;
|
|
case 0x10: return MBlaze::RTSD;
|
|
case 0x11: return MBlaze::RTID;
|
|
case 0x12: return MBlaze::RTBD;
|
|
case 0x14: return MBlaze::RTED;
|
|
}
|
|
}
|
|
|
|
static unsigned getOPCODE(uint32_t insn) {
|
|
unsigned opcode = mblazeBinary2Opcode[ (insn>>26)&0x3F ];
|
|
switch (opcode) {
|
|
case MBlaze::MUL: return decodeMUL(insn);
|
|
case MBlaze::SEXT8: return decodeSEXT(insn);
|
|
case MBlaze::BEQ: return decodeBEQ(insn);
|
|
case MBlaze::BEQI: return decodeBEQI(insn);
|
|
case MBlaze::BR: return decodeBR(insn);
|
|
case MBlaze::BRI: return decodeBRI(insn);
|
|
case MBlaze::BSRL: return decodeBSRL(insn);
|
|
case MBlaze::BSRLI: return decodeBSRLI(insn);
|
|
case MBlaze::RSUBK: return decodeRSUBK(insn);
|
|
case MBlaze::FADD: return decodeFADD(insn);
|
|
case MBlaze::GET: return decodeGET(insn);
|
|
case MBlaze::GETD: return decodeGETD(insn);
|
|
case MBlaze::IDIV: return decodeIDIV(insn);
|
|
case MBlaze::LBU: return decodeLBU(insn);
|
|
case MBlaze::LHU: return decodeLHU(insn);
|
|
case MBlaze::LW: return decodeLW(insn);
|
|
case MBlaze::SB: return decodeSB(insn);
|
|
case MBlaze::SH: return decodeSH(insn);
|
|
case MBlaze::SW: return decodeSW(insn);
|
|
case MBlaze::MFS: return decodeMFS(insn);
|
|
case MBlaze::OR: return decodeOR(insn);
|
|
case MBlaze::XOR: return decodeXOR(insn);
|
|
case MBlaze::ANDN: return decodeANDN(insn);
|
|
case MBlaze::RTSD: return decodeRTSD(insn);
|
|
default: return opcode;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Public interface for the disassembler
|
|
//
|
|
|
|
MCDisassembler::DecodeStatus MBlazeDisassembler::getInstruction(MCInst &instr,
|
|
uint64_t &size,
|
|
const MemoryObject ®ion,
|
|
uint64_t address,
|
|
raw_ostream &vStream,
|
|
raw_ostream &cStream) const {
|
|
// The machine instruction.
|
|
uint32_t insn;
|
|
uint8_t bytes[4];
|
|
|
|
// By default we consume 1 byte on failure
|
|
size = 1;
|
|
|
|
// We want to read exactly 4 bytes of data.
|
|
if (region.readBytes(address, 4, bytes) == -1)
|
|
return Fail;
|
|
|
|
// Encoded as a big-endian 32-bit word in the stream.
|
|
insn = (bytes[0]<<24) | (bytes[1]<<16) | (bytes[2]<< 8) | (bytes[3]<<0);
|
|
|
|
// Get the MCInst opcode from the binary instruction and make sure
|
|
// that it is a valid instruction.
|
|
unsigned opcode = getOPCODE(insn);
|
|
if (opcode == UNSUPPORTED)
|
|
return Fail;
|
|
|
|
instr.setOpcode(opcode);
|
|
|
|
unsigned RD = getRD(insn);
|
|
unsigned RA = getRA(insn);
|
|
unsigned RB = getRB(insn);
|
|
unsigned RS = getRS(insn);
|
|
|
|
uint64_t tsFlags = MBlazeInsts[opcode].TSFlags;
|
|
switch ((tsFlags & MBlazeII::FormMask)) {
|
|
default:
|
|
return Fail;
|
|
|
|
case MBlazeII::FC:
|
|
break;
|
|
|
|
case MBlazeII::FRRRR:
|
|
if (RD == UNSUPPORTED || RA == UNSUPPORTED || RB == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateReg(RB));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
break;
|
|
|
|
case MBlazeII::FRRR:
|
|
if (RD == UNSUPPORTED || RA == UNSUPPORTED || RB == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
instr.addOperand(MCOperand::CreateReg(RB));
|
|
break;
|
|
|
|
case MBlazeII::FRR:
|
|
if (RD == UNSUPPORTED || RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
break;
|
|
|
|
case MBlazeII::FRI:
|
|
switch (opcode) {
|
|
default:
|
|
return Fail;
|
|
case MBlaze::MFS:
|
|
if (RD == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateImm(insn&0x3FFF));
|
|
break;
|
|
case MBlaze::MTS:
|
|
if (RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateImm(insn&0x3FFF));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
break;
|
|
case MBlaze::MSRSET:
|
|
case MBlaze::MSRCLR:
|
|
if (RD == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateImm(insn&0x7FFF));
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case MBlazeII::FRRI:
|
|
if (RD == UNSUPPORTED || RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
switch (opcode) {
|
|
default:
|
|
instr.addOperand(MCOperand::CreateImm(getIMM(insn)));
|
|
break;
|
|
case MBlaze::BSRLI:
|
|
case MBlaze::BSRAI:
|
|
case MBlaze::BSLLI:
|
|
instr.addOperand(MCOperand::CreateImm(insn&0x1F));
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case MBlazeII::FCRR:
|
|
if (RA == UNSUPPORTED || RB == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
instr.addOperand(MCOperand::CreateReg(RB));
|
|
break;
|
|
|
|
case MBlazeII::FCRI:
|
|
if (RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
instr.addOperand(MCOperand::CreateImm(getIMM(insn)));
|
|
break;
|
|
|
|
case MBlazeII::FRCR:
|
|
if (RD == UNSUPPORTED || RB == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateReg(RB));
|
|
break;
|
|
|
|
case MBlazeII::FRCI:
|
|
if (RD == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateImm(getIMM(insn)));
|
|
break;
|
|
|
|
case MBlazeII::FCCR:
|
|
if (RB == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RB));
|
|
break;
|
|
|
|
case MBlazeII::FCCI:
|
|
instr.addOperand(MCOperand::CreateImm(getIMM(insn)));
|
|
break;
|
|
|
|
case MBlazeII::FRRCI:
|
|
if (RD == UNSUPPORTED || RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
instr.addOperand(MCOperand::CreateImm(getSHT(insn)));
|
|
break;
|
|
|
|
case MBlazeII::FRRC:
|
|
if (RD == UNSUPPORTED || RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
break;
|
|
|
|
case MBlazeII::FRCX:
|
|
if (RD == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateImm(getFSL(insn)));
|
|
break;
|
|
|
|
case MBlazeII::FRCS:
|
|
if (RD == UNSUPPORTED || RS == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateReg(RS));
|
|
break;
|
|
|
|
case MBlazeII::FCRCS:
|
|
if (RS == UNSUPPORTED || RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RS));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
break;
|
|
|
|
case MBlazeII::FCRCX:
|
|
if (RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
instr.addOperand(MCOperand::CreateImm(getFSL(insn)));
|
|
break;
|
|
|
|
case MBlazeII::FCX:
|
|
instr.addOperand(MCOperand::CreateImm(getFSL(insn)));
|
|
break;
|
|
|
|
case MBlazeII::FCR:
|
|
if (RB == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RB));
|
|
break;
|
|
|
|
case MBlazeII::FRIR:
|
|
if (RD == UNSUPPORTED || RA == UNSUPPORTED)
|
|
return Fail;
|
|
instr.addOperand(MCOperand::CreateReg(RD));
|
|
instr.addOperand(MCOperand::CreateImm(getIMM(insn)));
|
|
instr.addOperand(MCOperand::CreateReg(RA));
|
|
break;
|
|
}
|
|
|
|
// We always consume 4 bytes of data on success
|
|
size = 4;
|
|
|
|
return Success;
|
|
}
|
|
|
|
static MCDisassembler *createMBlazeDisassembler(const Target &T,
|
|
const MCSubtargetInfo &STI) {
|
|
return new MBlazeDisassembler(STI);
|
|
}
|
|
|
|
extern "C" void LLVMInitializeMBlazeDisassembler() {
|
|
// Register the disassembler.
|
|
TargetRegistry::RegisterMCDisassembler(TheMBlazeTarget,
|
|
createMBlazeDisassembler);
|
|
}
|