| /* |
| * Copyright (C) 2021 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #if ENABLE(DISASSEMBLER) && ENABLE(RISCV64_DISASSEMBLER) |
| |
| #include "MacroAssemblerCodeRef.h" |
| #include "RISCV64Assembler.h" |
| #include <array> |
| #include <mutex> |
| |
| namespace JSC { |
| |
| namespace RISCV64Disassembler { |
| |
| template<size_t BufferSize> |
| struct StringBufferBase { |
| char* data() { return buffer.data(); } |
| size_t size() { return sizeof(char) * buffer.size(); } |
| |
| CString createString() |
| { |
| buffer[BufferSize - 1] = '\0'; |
| return { buffer.data() }; |
| } |
| |
| std::array<char, BufferSize> buffer; |
| }; |
| |
| using StringBuffer = StringBufferBase<256>; |
| using SmallStringBuffer = StringBufferBase<32>; |
| |
| template<typename RegisterType> const char* registerName(uint8_t) = delete; |
| |
| template<> |
| const char* registerName<RISCV64Instructions::RegistersBase::GType>(uint8_t value) |
| { |
| static const std::array<const char*, 32> s_gpRegNames { |
| "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7", |
| "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", |
| "x16", "x17", "x18", "x19", "x20", "x21", "x22", "x23", |
| "x24", "x25", "x26", "x27", "x28", "x29", "x30", "x31", |
| }; |
| |
| if (value < 32) |
| return s_gpRegNames[value]; |
| return "<unknown>"; |
| } |
| |
| template<> |
| const char* registerName<RISCV64Instructions::RegistersBase::FType>(uint8_t value) |
| { |
| static const std::array<const char*, 32> s_fpRegNames { |
| "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", |
| "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", |
| "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", |
| "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", |
| }; |
| |
| if (value < 32) |
| return s_fpRegNames[value]; |
| return "<unknown>"; |
| } |
| |
| const char* roundingMode(uint8_t value) |
| { |
| using RISCV64Instructions::FPRoundingMode; |
| |
| switch (value) { |
| case unsigned(FPRoundingMode::RNE): |
| return "rne"; |
| case unsigned(FPRoundingMode::RTZ): |
| return "rtz"; |
| case unsigned(FPRoundingMode::RDN): |
| return "rdn"; |
| case unsigned(FPRoundingMode::RUP): |
| return "rup"; |
| case unsigned(FPRoundingMode::RMM): |
| return "rmm"; |
| case unsigned(FPRoundingMode::DYN): |
| return "dyn"; |
| default: |
| break; |
| } |
| |
| return "<unknown>"; |
| } |
| |
| SmallStringBuffer memoryOperationFlags(uint8_t value) |
| { |
| using RISCV64Instructions::MemoryOperation; |
| |
| SmallStringBuffer buffer; |
| if (!!value) { |
| snprintf(buffer.data(), buffer.size(), "%s%s%s%s", |
| (value & unsigned(MemoryOperation::I)) ? "i" : "", |
| (value & unsigned(MemoryOperation::O)) ? "o" : "", |
| (value & unsigned(MemoryOperation::R)) ? "r" : "", |
| (value & unsigned(MemoryOperation::W)) ? "w" : ""); |
| } else |
| snprintf(buffer.data(), buffer.size(), "<none>"); |
| return buffer; |
| } |
| |
| const char* aqrlFlags(uint8_t value) |
| { |
| using RISCV64Instructions::MemoryAccess; |
| |
| switch (value) { |
| case 0: |
| return ""; |
| case unsigned(MemoryAccess::Acquire): |
| return ".aq"; |
| case unsigned(MemoryAccess::Release): |
| return ".rl"; |
| case unsigned(MemoryAccess::AcquireRelease): |
| return ".aqrl"; |
| default: |
| break; |
| } |
| |
| return "<unknown>"; |
| } |
| |
| // A simple type that handles a parameter pack of instruction types, along with a contains<T>() helper that serves as a |
| // compile-time check whether a given type is included in that parameter pack. |
| |
| template<typename... Args> |
| struct InstructionList { |
| template<typename T> |
| static constexpr bool contains() |
| { |
| return (std::is_same_v<T, Args> || ...); |
| } |
| }; |
| |
| // To enable showing sensible disassembly, different instructions have to be formatted differently. Each such formatting |
| // class specifies the list of instructions it can format, but generally instructions under a given formatter fall into |
| // the same class of instructions. The disassemble() static function returns a CString holding the formatted data. |
| |
| struct RTypeDefaultFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::ADD, RISCV64Instructions::SUB, |
| RISCV64Instructions::SLT, RISCV64Instructions::SLTU, |
| RISCV64Instructions::SLL, RISCV64Instructions::SRL, RISCV64Instructions::SRA, |
| RISCV64Instructions::XOR, RISCV64Instructions::OR, RISCV64Instructions::AND, |
| RISCV64Instructions::ADDW, RISCV64Instructions::SUBW, |
| RISCV64Instructions::SLLW, RISCV64Instructions::SRLW, RISCV64Instructions::SRAW, |
| RISCV64Instructions::FSGNJ_S, RISCV64Instructions::FSGNJ_D, |
| RISCV64Instructions::FSGNJN_S, RISCV64Instructions::FSGNJN_D, |
| RISCV64Instructions::FSGNJX_S, RISCV64Instructions::FSGNJX_D, |
| RISCV64Instructions::FMIN_S, RISCV64Instructions::FMIN_D, |
| RISCV64Instructions::FMAX_S, RISCV64Instructions::FMAX_D, |
| RISCV64Instructions::FEQ_S, RISCV64Instructions::FEQ_D, |
| RISCV64Instructions::FLT_S, RISCV64Instructions::FLT_D, |
| RISCV64Instructions::FLE_S, RISCV64Instructions::FLE_D, |
| RISCV64Instructions::MUL, RISCV64Instructions::MULH, RISCV64Instructions::MULHSU, RISCV64Instructions::MULHU, |
| RISCV64Instructions::DIV, RISCV64Instructions::DIVU, RISCV64Instructions::REM, RISCV64Instructions::REMU, |
| RISCV64Instructions::MULW, RISCV64Instructions::DIVW, RISCV64Instructions::DIVUW, RISCV64Instructions::REMW, RISCV64Instructions::REMUW>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %s, %s", |
| T::name, registerName<typename T::Registers::RD>(T::rd(insn)), |
| registerName<typename T::Registers::RS1>(T::rs1(insn)), registerName<typename T::Registers::RS2>(T::rs2(insn))); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct RTypeR2Formatting { |
| using List = InstructionList< |
| RISCV64Instructions::FMV_X_W, RISCV64Instructions::FMV_W_X, |
| RISCV64Instructions::FMV_X_D, RISCV64Instructions::FMV_D_X, |
| RISCV64Instructions::FCLASS_S, RISCV64Instructions::FCLASS_D>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %s", |
| T::name, |
| registerName<typename T::Registers::RD>(T::rd(insn)), registerName<typename T::Registers::RS1>(T::rs1(insn))); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct RTypeWithRoundingModeDefaultFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::FADD_S, |
| RISCV64Instructions::FADD_D, |
| RISCV64Instructions::FSUB_S, |
| RISCV64Instructions::FSUB_D, |
| RISCV64Instructions::FMUL_S, |
| RISCV64Instructions::FMUL_D, |
| RISCV64Instructions::FDIV_S, |
| RISCV64Instructions::FDIV_D>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| uint8_t rm = T::rm(insn); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %s, %s%s%s", |
| T::name, registerName<typename T::Registers::RD>(T::rd(insn)), |
| registerName<typename T::Registers::RS1>(T::rs1(insn)), registerName<typename T::Registers::RS2>(T::rs2(insn)), |
| (rm == unsigned(RISCV64Instructions::FPRoundingMode::DYN)) ? "" : ", rm:", |
| (rm == unsigned(RISCV64Instructions::FPRoundingMode::DYN)) ? "" : roundingMode(rm)); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct RTypeWithRoundingModeFSQRTFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::FSQRT_S, RISCV64Instructions::FSQRT_D>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| uint8_t rm = T::rm(insn); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %s%s%s", |
| T::name, registerName<typename T::Registers::RD>(T::rd(insn)), |
| registerName<typename T::Registers::RS1>(T::rs1(insn)), |
| (rm == unsigned(RISCV64Instructions::FPRoundingMode::DYN)) ? "" : ", rm:", |
| (rm == unsigned(RISCV64Instructions::FPRoundingMode::DYN)) ? "" : roundingMode(rm)); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct RTypeWithRoundingModeFCVTFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::FCVT_W_S, RISCV64Instructions::FCVT_WU_S, |
| RISCV64Instructions::FCVT_S_W, RISCV64Instructions::FCVT_S_WU, |
| RISCV64Instructions::FCVT_W_D, RISCV64Instructions::FCVT_WU_D, |
| RISCV64Instructions::FCVT_D_W, RISCV64Instructions::FCVT_D_WU, |
| RISCV64Instructions::FCVT_L_S, RISCV64Instructions::FCVT_LU_S, |
| RISCV64Instructions::FCVT_S_L, RISCV64Instructions::FCVT_S_LU, |
| RISCV64Instructions::FCVT_L_D, RISCV64Instructions::FCVT_LU_D, |
| RISCV64Instructions::FCVT_D_L, RISCV64Instructions::FCVT_D_LU, |
| RISCV64Instructions::FCVT_S_D, RISCV64Instructions::FCVT_D_S>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| uint8_t rm = T::rm(insn); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %s%s%s", |
| T::name, registerName<typename T::Registers::RD>(T::rd(insn)), registerName<typename T::Registers::RS1>(T::rs1(insn)), |
| (rm == unsigned(RISCV64Instructions::FPRoundingMode::DYN)) ? "" : ", rm:", |
| (rm == unsigned(RISCV64Instructions::FPRoundingMode::DYN)) ? "" : roundingMode(rm)); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct RTypeWithAqRlDefaultFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::SC_W, RISCV64Instructions::SC_D, |
| RISCV64Instructions::AMOSWAP_W, RISCV64Instructions::AMOSWAP_D, |
| RISCV64Instructions::AMOADD_W, RISCV64Instructions::AMOADD_D, |
| RISCV64Instructions::AMOXOR_W, RISCV64Instructions::AMOXOR_D, |
| RISCV64Instructions::AMOAND_W, RISCV64Instructions::AMOAND_D, |
| RISCV64Instructions::AMOOR_W, RISCV64Instructions::AMOOR_D, |
| RISCV64Instructions::AMOMIN_W, RISCV64Instructions::AMOMIN_D, |
| RISCV64Instructions::AMOMAX_W, RISCV64Instructions::AMOMAX_D, |
| RISCV64Instructions::AMOMINU_W, RISCV64Instructions::AMOMINU_D, |
| RISCV64Instructions::AMOMAXU_W, RISCV64Instructions::AMOMAXU_D>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s%s %s, %s, %s", |
| T::name, aqrlFlags(T::aqrl(insn)), registerName<typename T::Registers::RD>(T::rd(insn)), |
| registerName<typename T::Registers::RS1>(T::rs1(insn)), registerName<typename T::Registers::RS2>(T::rs2(insn))); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct RTypeWithAqRlLRFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::LR_W, RISCV64Instructions::LR_D>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s%s %s, %s", |
| T::name, aqrlFlags(T::aqrl(insn)), |
| registerName<typename T::Registers::RD>(T::rd(insn)), registerName<typename T::Registers::RS1>(T::rs1(insn))); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct R4TypeWithRoundingModeDefaultFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::FMADD_S, RISCV64Instructions::FMADD_D, |
| RISCV64Instructions::FMSUB_S, RISCV64Instructions::FMSUB_D, |
| RISCV64Instructions::FNMSUB_S, RISCV64Instructions::FNMSUB_D, |
| RISCV64Instructions::FNMADD_S, RISCV64Instructions::FNMADD_D>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| uint8_t rm = T::rm(insn); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %s, %s, %s%s%s", |
| T::name, registerName<typename T::Registers::RD>(T::rd(insn)), registerName<typename T::Registers::RS1>(T::rs1(insn)), |
| registerName<typename T::Registers::RS2>(T::rs2(insn)), registerName<typename T::Registers::RS3>(T::rs3(insn)), |
| (rm == unsigned(RISCV64Instructions::FPRoundingMode::DYN)) ? "" : ", rm:", |
| (rm == unsigned(RISCV64Instructions::FPRoundingMode::DYN)) ? "" : roundingMode(rm)); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct ITypeDefaultFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::ADDI, RISCV64Instructions::SLTI, RISCV64Instructions::SLTIU, |
| RISCV64Instructions::XORI, RISCV64Instructions::ORI, RISCV64Instructions::ANDI, |
| RISCV64Instructions::SLLI, RISCV64Instructions::SRLI, RISCV64Instructions::SRAI, |
| RISCV64Instructions::ADDIW, RISCV64Instructions::SLLIW, RISCV64Instructions::SRLIW, RISCV64Instructions::SRAIW>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %s, %d", |
| T::name, registerName<typename T::Registers::RD>(T::rd(insn)), |
| registerName<typename T::Registers::RS1>(T::rs1(insn)), RISCV64Instructions::IImmediate::value(insn)); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct ITypeImmediateAsOffsetFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::JALR, |
| RISCV64Instructions::LB, RISCV64Instructions::LBU, |
| RISCV64Instructions::LH, RISCV64Instructions::LHU, |
| RISCV64Instructions::LW, RISCV64Instructions::LWU, |
| RISCV64Instructions::LD, |
| RISCV64Instructions::FLW, RISCV64Instructions::FLD>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %d(%s)", |
| T::name, registerName<typename T::Registers::RD>(T::rd(insn)), |
| RISCV64Instructions::IImmediate::value(insn), registerName<typename T::Registers::RS1>(T::rs1(insn))); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct STypeDefaultFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::SB, RISCV64Instructions::SH, RISCV64Instructions::SW, RISCV64Instructions::SD, |
| RISCV64Instructions::FSW, RISCV64Instructions::FSD>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %d(%s)", |
| T::name, registerName<typename T::Registers::RS2>(T::rs2(insn)), |
| RISCV64Instructions::SImmediate::value(insn), registerName<typename T::Registers::RS1>(T::rs1(insn))); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct BTypeDefaultFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::BEQ, |
| RISCV64Instructions::BNE, |
| RISCV64Instructions::BLT, |
| RISCV64Instructions::BGE, |
| RISCV64Instructions::BLTU, |
| RISCV64Instructions::BGEU>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %s, %d", |
| T::name, registerName<typename T::Registers::RS1>(T::rs1(insn)), registerName<typename T::Registers::RS2>(T::rs2(insn)), |
| RISCV64Instructions::BImmediate::value(insn)); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct UTypeDefaultFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::LUI, RISCV64Instructions::AUIPC>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s, %u", |
| T::name, registerName<typename T::Registers::RD>(T::rd(insn)), RISCV64Instructions::UImmediate::value(insn)); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct JTypeDefaultFormatting { |
| using List = InstructionList<RISCV64Instructions::JAL>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %d(%s)", |
| T::name, RISCV64Instructions::JImmediate::value(insn), registerName<typename T::Registers::RD>(T::rd(insn))); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct FenceInstructionFormatting { |
| using List = InstructionList<RISCV64Instructions::FENCE>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(List::contains<T>()); |
| |
| auto immValue = RISCV64Instructions::IImmediate::value(insn); |
| auto predecessorFlags = memoryOperationFlags((immValue >> 4) & ((1 << 4) - 1)); |
| auto successorFlags = memoryOperationFlags((immValue >> 0) & ((1 << 4) - 1)); |
| |
| StringBuffer buffer; |
| snprintf(buffer.data(), buffer.size(), "%s %s,%s", |
| T::name, predecessorFlags.data(), successorFlags.data()); |
| return buffer.createString(); |
| } |
| }; |
| |
| struct FenceIInstructionFormatting { |
| using List = InstructionList<RISCV64Instructions::FENCE_I>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue) |
| { |
| static_assert(List::contains<T>()); |
| |
| return { T::name }; |
| } |
| }; |
| |
| struct EnvironmentInstructionFormatting { |
| using List = InstructionList< |
| RISCV64Instructions::ECALL, RISCV64Instructions::EBREAK>; |
| |
| template<typename T> |
| static CString disassemble(RISCV64Instructions::InstructionValue) |
| { |
| static_assert(List::contains<T>()); |
| |
| return { T::name }; |
| } |
| }; |
| |
| // The Disassembler struct below has a template parameter pack, containing a list of instructions through which it |
| // should cascade and find a matching instruction type. When found, the DisassemblyFormatting class finds an |
| // appropriate formatter and uses it to return the disassembly string for the given instruction value. |
| |
| template<typename T, typename FormattingType, typename... OtherFormattingTypes> |
| struct DisassemblyFormattingImpl { |
| using Type = std::conditional_t<FormattingType::List::template contains<T>(), |
| FormattingType, |
| typename DisassemblyFormattingImpl<T, OtherFormattingTypes...>::Type>; |
| }; |
| |
| template<typename T, typename FormattingType> |
| struct DisassemblyFormattingImpl<T, FormattingType> { |
| using Type = FormattingType; |
| }; |
| |
| template<typename T> |
| struct DisassemblyFormatting { |
| using Type = typename DisassemblyFormattingImpl<T, |
| RTypeDefaultFormatting, |
| RTypeR2Formatting, |
| RTypeWithRoundingModeDefaultFormatting, |
| RTypeWithRoundingModeFSQRTFormatting, |
| RTypeWithRoundingModeFCVTFormatting, |
| RTypeWithAqRlDefaultFormatting, |
| RTypeWithAqRlLRFormatting, |
| R4TypeWithRoundingModeDefaultFormatting, |
| ITypeDefaultFormatting, |
| ITypeImmediateAsOffsetFormatting, |
| STypeDefaultFormatting, |
| BTypeDefaultFormatting, |
| UTypeDefaultFormatting, |
| JTypeDefaultFormatting, |
| FenceInstructionFormatting, |
| FenceIInstructionFormatting, |
| EnvironmentInstructionFormatting>::Type; |
| |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| static_assert(Type::List::template contains<T>()); |
| return Type::template disassemble<T>(insn); |
| } |
| }; |
| |
| template<typename InsnType, typename... OtherInsnTypes> |
| struct Disassembler { |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| if (InsnType::matches(insn)) |
| return DisassemblyFormatting<InsnType>::disassemble(insn); |
| return Disassembler<OtherInsnTypes...>::disassemble(insn); |
| } |
| }; |
| |
| template<typename InsnType> |
| struct Disassembler<InsnType> { |
| static CString disassemble(RISCV64Instructions::InstructionValue insn) |
| { |
| if (InsnType::matches(insn)) |
| return DisassemblyFormatting<InsnType>::disassemble(insn); |
| return { }; |
| } |
| }; |
| |
| CString disassembleOpcode(uint32_t *pc) |
| { |
| using namespace RISCV64Instructions; |
| using DisassemblerType = Disassembler< |
| // RV32I Base Instruction Set |
| LUI, AUIPC, JAL, JALR, |
| BEQ, BNE, BLT, BGE, BLTU, BGEU, |
| LB, LH, LW, LBU, LHU, |
| SB, SH, SW, |
| ADDI, SLTI, SLTIU, XORI, ORI, ANDI, SLLI, SRLI, SRAI, |
| ADD, SUB, SLL, SLT, SLTU, XOR, SRL, SRA, OR, AND, |
| FENCE, ECALL, EBREAK, |
| // RV64I Base Instruction Set (in addition to RV32I) |
| LWU, LD, SD, |
| ADDIW, SLLIW, SRLIW, SRAIW, |
| ADDW, SUBW, SLLW, SRLW, SRAW, |
| // RV32/RV64 Zifencei Standard Extension |
| FENCE_I, |
| // RV32M Standard Extension |
| MUL, MULH, MULHSU, MULHU, |
| DIV, DIVU, REM, REMU, |
| // RV64M Standard Extension (in addition to RV32M) |
| MULW, DIVW, DIVUW, REMW, REMUW, |
| // RV32A Standard Extension |
| LR_W, SC_W, |
| AMOSWAP_W, AMOADD_W, AMOXOR_W, AMOAND_W, AMOOR_W, AMOMIN_W, AMOMAX_W, AMOMINU_W, AMOMAXU_W, |
| // RV64A Standard Extension (in addition to RV32A) |
| LR_D, SC_D, |
| AMOSWAP_D, AMOADD_D, AMOXOR_D, AMOAND_D, AMOOR_D, AMOMIN_D, AMOMAX_D, AMOMINU_D, AMOMAXU_D, |
| // RV32F Standard Extension |
| FLW, FSW, |
| FMADD_S, FMSUB_S, FNMSUB_S, FNMADD_S, |
| FADD_S, FSUB_S, FMUL_S, FDIV_S, FSQRT_S, |
| FSGNJ_S, FSGNJN_S, FSGNJX_S, FMIN_S, FMAX_S, |
| FCVT_W_S, FCVT_WU_S, FMV_X_W, |
| FEQ_S, FLT_S, FLE_S, FCLASS_S, |
| FCVT_S_W, FCVT_S_WU, FMV_W_X, |
| // RV64F Standard Extension (in addition to RV32F) |
| FCVT_L_S, FCVT_LU_S, FCVT_S_L, FCVT_S_LU, |
| // RV32D Standard Extension |
| FLD, FSD, |
| FMADD_D, FMSUB_D, FNMSUB_D, FNMADD_D, |
| FADD_D, FSUB_D, FMUL_D, FDIV_D, FSQRT_D, |
| FSGNJ_D, FSGNJN_D, FSGNJX_D, FMIN_D, FMAX_D, |
| FCVT_S_D, FCVT_D_S, |
| FEQ_D, FLT_D, FLE_D, FCLASS_D, |
| FCVT_W_D, FCVT_WU_D, FCVT_D_W, FCVT_D_WU, |
| // RV64D Standard Extension (in addition to RV32D) |
| FCVT_L_D, FCVT_LU_D, FMV_X_D, |
| FCVT_D_L, FCVT_D_LU, FMV_D_X>; |
| |
| auto disassembly = DisassemblerType::disassemble(InstructionValue { *pc }); |
| if (!disassembly.isNull()) |
| return disassembly; |
| return CString { "<unrecognized opcode>" }; |
| } |
| |
| } // namespace RISCV64Disassembler |
| |
| bool tryToDisassemble(const MacroAssemblerCodePtr<DisassemblyPtrTag>& codePtr, size_t size, const char* prefix, PrintStream& out) |
| { |
| uint32_t* currentPC = codePtr.untaggedExecutableAddress<uint32_t*>(); |
| size_t byteCount = size; |
| |
| while (byteCount) { |
| out.printf("%s%#16llx: <%08x> %s\n", prefix, static_cast<unsigned long long>(bitwise_cast<uintptr_t>(currentPC)), *currentPC, |
| RISCV64Disassembler::disassembleOpcode(currentPC).data()); |
| |
| ++currentPC; |
| byteCount -= sizeof(uint32_t); |
| } |
| |
| return true; |
| } |
| |
| } // namespace JSC |
| |
| #endif // ENABLE(DISASSEMBLER) && ENABLE(RISCV64_DISASSEMBLER) |
