| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "dex_instruction-inl.h" |
| |
| #include <inttypes.h> |
| |
| #include <iomanip> |
| |
| #include "base/stringprintf.h" |
| #include "dex_file-inl.h" |
| #include "utils.h" |
| |
| namespace art { |
| |
| const char* const Instruction::kInstructionNames[] = { |
| #define INSTRUCTION_NAME(o, c, pname, f, r, i, a, v) pname, |
| #include "dex_instruction_list.h" |
| DEX_INSTRUCTION_LIST(INSTRUCTION_NAME) |
| #undef DEX_INSTRUCTION_LIST |
| #undef INSTRUCTION_NAME |
| }; |
| |
| Instruction::Format const Instruction::kInstructionFormats[] = { |
| #define INSTRUCTION_FORMAT(o, c, p, format, r, i, a, v) format, |
| #include "dex_instruction_list.h" |
| DEX_INSTRUCTION_LIST(INSTRUCTION_FORMAT) |
| #undef DEX_INSTRUCTION_LIST |
| #undef INSTRUCTION_FORMAT |
| }; |
| |
| int const Instruction::kInstructionFlags[] = { |
| #define INSTRUCTION_FLAGS(o, c, p, f, r, i, flags, v) flags, |
| #include "dex_instruction_list.h" |
| DEX_INSTRUCTION_LIST(INSTRUCTION_FLAGS) |
| #undef DEX_INSTRUCTION_LIST |
| #undef INSTRUCTION_FLAGS |
| }; |
| |
| int const Instruction::kInstructionVerifyFlags[] = { |
| #define INSTRUCTION_VERIFY_FLAGS(o, c, p, f, r, i, a, vflags) vflags, |
| #include "dex_instruction_list.h" |
| DEX_INSTRUCTION_LIST(INSTRUCTION_VERIFY_FLAGS) |
| #undef DEX_INSTRUCTION_LIST |
| #undef INSTRUCTION_VERIFY_FLAGS |
| }; |
| |
| int const Instruction::kInstructionSizeInCodeUnits[] = { |
| #define INSTRUCTION_SIZE(opcode, c, p, format, r, i, a, v) \ |
| ((opcode == NOP) ? -1 : \ |
| ((format >= k10x) && (format <= k10t)) ? 1 : \ |
| ((format >= k20t) && (format <= k22c)) ? 2 : \ |
| ((format >= k32x) && (format <= k3rc)) ? 3 : \ |
| (format == k51l) ? 5 : -1), |
| #include "dex_instruction_list.h" |
| DEX_INSTRUCTION_LIST(INSTRUCTION_SIZE) |
| #undef DEX_INSTRUCTION_LIST |
| #undef INSTRUCTION_SIZE |
| }; |
| |
| int32_t Instruction::GetTargetOffset() const { |
| switch (FormatOf(Opcode())) { |
| // Cases for conditional branches follow. |
| case k22t: return VRegC_22t(); |
| case k21t: return VRegB_21t(); |
| // Cases for unconditional branches follow. |
| case k10t: return VRegA_10t(); |
| case k20t: return VRegA_20t(); |
| case k30t: return VRegA_30t(); |
| default: LOG(FATAL) << "Tried to access the branch offset of an instruction " << Name() << |
| " which does not have a target operand."; |
| } |
| return 0; |
| } |
| |
| bool Instruction::CanFlowThrough() const { |
| const uint16_t* insns = reinterpret_cast<const uint16_t*>(this); |
| uint16_t insn = *insns; |
| Code opcode = static_cast<Code>(insn & 0xFF); |
| return FlagsOf(opcode) & Instruction::kContinue; |
| } |
| |
| size_t Instruction::SizeInCodeUnitsComplexOpcode() const { |
| const uint16_t* insns = reinterpret_cast<const uint16_t*>(this); |
| // Handle special NOP encoded variable length sequences. |
| switch (*insns) { |
| case kPackedSwitchSignature: |
| return (4 + insns[1] * 2); |
| case kSparseSwitchSignature: |
| return (2 + insns[1] * 4); |
| case kArrayDataSignature: { |
| uint16_t element_size = insns[1]; |
| uint32_t length = insns[2] | (((uint32_t)insns[3]) << 16); |
| // The plus 1 is to round up for odd size and width. |
| return (4 + (element_size * length + 1) / 2); |
| } |
| default: |
| if ((*insns & 0xFF) == 0) { |
| return 1; // NOP. |
| } else { |
| LOG(FATAL) << "Unreachable: " << DumpString(NULL); |
| return 0; |
| } |
| } |
| } |
| |
| std::string Instruction::DumpHex(size_t code_units) const { |
| size_t inst_length = SizeInCodeUnits(); |
| if (inst_length > code_units) { |
| inst_length = code_units; |
| } |
| std::ostringstream os; |
| const uint16_t* insn = reinterpret_cast<const uint16_t*>(this); |
| for (size_t i = 0; i < inst_length; i++) { |
| os << StringPrintf("0x%04x", insn[i]) << " "; |
| } |
| for (size_t i = inst_length; i < code_units; i++) { |
| os << " "; |
| } |
| return os.str(); |
| } |
| |
| std::string Instruction::DumpString(const DexFile* file) const { |
| std::ostringstream os; |
| const char* opcode = kInstructionNames[Opcode()]; |
| switch (FormatOf(Opcode())) { |
| case k10x: os << opcode; break; |
| case k12x: os << StringPrintf("%s v%d, v%d", opcode, VRegA_12x(), VRegB_12x()); break; |
| case k11n: os << StringPrintf("%s v%d, #%+d", opcode, VRegA_11n(), VRegB_11n()); break; |
| case k11x: os << StringPrintf("%s v%d", opcode, VRegA_11x()); break; |
| case k10t: os << StringPrintf("%s %+d", opcode, VRegA_10t()); break; |
| case k20t: os << StringPrintf("%s %+d", opcode, VRegA_20t()); break; |
| case k22x: os << StringPrintf("%s v%d, v%d", opcode, VRegA_22x(), VRegB_22x()); break; |
| case k21t: os << StringPrintf("%s v%d, %+d", opcode, VRegA_21t(), VRegB_21t()); break; |
| case k21s: os << StringPrintf("%s v%d, #%+d", opcode, VRegA_21s(), VRegB_21s()); break; |
| case k21h: { |
| // op vAA, #+BBBB0000[00000000] |
| if (Opcode() == CONST_HIGH16) { |
| uint32_t value = VRegB_21h() << 16; |
| os << StringPrintf("%s v%d, #int %+d // 0x%x", opcode, VRegA_21h(), value, value); |
| } else { |
| uint64_t value = static_cast<uint64_t>(VRegB_21h()) << 48; |
| os << StringPrintf("%s v%d, #long %+" PRId64 " // 0x%" PRIx64, opcode, VRegA_21h(), |
| value, value); |
| } |
| } |
| break; |
| case k21c: { |
| switch (Opcode()) { |
| case CONST_STRING: |
| if (file != NULL) { |
| uint32_t string_idx = VRegB_21c(); |
| os << StringPrintf("const-string v%d, %s // string@%d", VRegA_21c(), |
| PrintableString(file->StringDataByIdx(string_idx)).c_str(), string_idx); |
| break; |
| } // else fall-through |
| case CHECK_CAST: |
| case CONST_CLASS: |
| case NEW_INSTANCE: |
| if (file != NULL) { |
| uint32_t type_idx = VRegB_21c(); |
| os << opcode << " v" << static_cast<int>(VRegA_21c()) << ", " << PrettyType(type_idx, *file) |
| << " // type@" << type_idx; |
| break; |
| } // else fall-through |
| case SGET: |
| case SGET_WIDE: |
| case SGET_OBJECT: |
| case SGET_BOOLEAN: |
| case SGET_BYTE: |
| case SGET_CHAR: |
| case SGET_SHORT: |
| if (file != NULL) { |
| uint32_t field_idx = VRegB_21c(); |
| os << opcode << " v" << static_cast<int>(VRegA_21c()) << ", " << PrettyField(field_idx, *file, true) |
| << " // field@" << field_idx; |
| break; |
| } // else fall-through |
| case SPUT: |
| case SPUT_WIDE: |
| case SPUT_OBJECT: |
| case SPUT_BOOLEAN: |
| case SPUT_BYTE: |
| case SPUT_CHAR: |
| case SPUT_SHORT: |
| if (file != NULL) { |
| uint32_t field_idx = VRegB_21c(); |
| os << opcode << " v" << static_cast<int>(VRegA_21c()) << ", " << PrettyField(field_idx, *file, true) |
| << " // field@" << field_idx; |
| break; |
| } // else fall-through |
| default: |
| os << StringPrintf("%s v%d, thing@%d", opcode, VRegA_21c(), VRegB_21c()); |
| break; |
| } |
| break; |
| } |
| case k23x: os << StringPrintf("%s v%d, v%d, v%d", opcode, VRegA_23x(), VRegB_23x(), VRegC_23x()); break; |
| case k22b: os << StringPrintf("%s v%d, v%d, #%+d", opcode, VRegA_22b(), VRegB_22b(), VRegC_22b()); break; |
| case k22t: os << StringPrintf("%s v%d, v%d, %+d", opcode, VRegA_22t(), VRegB_22t(), VRegC_22t()); break; |
| case k22s: os << StringPrintf("%s v%d, v%d, #%+d", opcode, VRegA_22s(), VRegB_22s(), VRegC_22s()); break; |
| case k22c: { |
| switch (Opcode()) { |
| case IGET: |
| case IGET_WIDE: |
| case IGET_OBJECT: |
| case IGET_BOOLEAN: |
| case IGET_BYTE: |
| case IGET_CHAR: |
| case IGET_SHORT: |
| if (file != NULL) { |
| uint32_t field_idx = VRegC_22c(); |
| os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", " |
| << PrettyField(field_idx, *file, true) << " // field@" << field_idx; |
| break; |
| } // else fall-through |
| case IGET_QUICK: |
| case IGET_OBJECT_QUICK: |
| if (file != NULL) { |
| uint32_t field_idx = VRegC_22c(); |
| os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", " |
| << "// offset@" << field_idx; |
| break; |
| } // else fall-through |
| case IPUT: |
| case IPUT_WIDE: |
| case IPUT_OBJECT: |
| case IPUT_BOOLEAN: |
| case IPUT_BYTE: |
| case IPUT_CHAR: |
| case IPUT_SHORT: |
| if (file != NULL) { |
| uint32_t field_idx = VRegC_22c(); |
| os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", " |
| << PrettyField(field_idx, *file, true) << " // field@" << field_idx; |
| break; |
| } // else fall-through |
| case IPUT_QUICK: |
| case IPUT_OBJECT_QUICK: |
| if (file != NULL) { |
| uint32_t field_idx = VRegC_22c(); |
| os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", " |
| << "// offset@" << field_idx; |
| break; |
| } // else fall-through |
| case INSTANCE_OF: |
| if (file != NULL) { |
| uint32_t type_idx = VRegC_22c(); |
| os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", " |
| << PrettyType(type_idx, *file) << " // type@" << type_idx; |
| break; |
| } |
| case NEW_ARRAY: |
| if (file != NULL) { |
| uint32_t type_idx = VRegC_22c(); |
| os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", " |
| << PrettyType(type_idx, *file) << " // type@" << type_idx; |
| break; |
| } // else fall-through |
| default: |
| os << StringPrintf("%s v%d, v%d, thing@%d", opcode, VRegA_22c(), VRegB_22c(), VRegC_22c()); |
| break; |
| } |
| break; |
| } |
| case k32x: os << StringPrintf("%s v%d, v%d", opcode, VRegA_32x(), VRegB_32x()); break; |
| case k30t: os << StringPrintf("%s %+d", opcode, VRegA_30t()); break; |
| case k31t: os << StringPrintf("%s v%d, %+d", opcode, VRegA_31t(), VRegB_31t()); break; |
| case k31i: os << StringPrintf("%s v%d, #%+d", opcode, VRegA_31i(), VRegB_31i()); break; |
| case k31c: |
| if (Opcode() == CONST_STRING_JUMBO) { |
| uint32_t string_idx = VRegB_31c(); |
| if (file != NULL) { |
| os << StringPrintf("%s v%d, %s // string@%d", opcode, VRegA_31c(), |
| PrintableString(file->StringDataByIdx(string_idx)).c_str(), |
| string_idx); |
| } else { |
| os << StringPrintf("%s v%d, string@%d", opcode, VRegA_31c(), string_idx); |
| } |
| } else { |
| os << StringPrintf("%s v%d, thing@%d", opcode, VRegA_31c(), VRegB_31c()); break; |
| } |
| break; |
| case k35c: { |
| uint32_t arg[5]; |
| GetVarArgs(arg); |
| switch (Opcode()) { |
| case FILLED_NEW_ARRAY: |
| { |
| const int32_t a = VRegA_35c(); |
| os << opcode << " {"; |
| for (int i = 0; i < a; ++i) { |
| if (i > 0) { |
| os << ", "; |
| } |
| os << "v" << arg[i]; |
| } |
| os << "}, type@" << VRegB_35c(); |
| } |
| break; |
| |
| case INVOKE_VIRTUAL: |
| case INVOKE_SUPER: |
| case INVOKE_DIRECT: |
| case INVOKE_STATIC: |
| case INVOKE_INTERFACE: |
| if (file != NULL) { |
| os << opcode << " {"; |
| uint32_t method_idx = VRegB_35c(); |
| for (size_t i = 0; i < VRegA_35c(); ++i) { |
| if (i != 0) { |
| os << ", "; |
| } |
| os << "v" << arg[i]; |
| } |
| os << "}, " << PrettyMethod(method_idx, *file) << " // method@" << method_idx; |
| break; |
| } // else fall-through |
| case INVOKE_VIRTUAL_QUICK: |
| if (file != NULL) { |
| os << opcode << " {"; |
| uint32_t method_idx = VRegB_35c(); |
| for (size_t i = 0; i < VRegA_35c(); ++i) { |
| if (i != 0) { |
| os << ", "; |
| } |
| os << "v" << arg[i]; |
| } |
| os << "}, // vtable@" << method_idx; |
| break; |
| } // else fall-through |
| default: |
| os << opcode << " {v" << arg[0] << ", v" << arg[1] << ", v" << arg[2] |
| << ", v" << arg[3] << ", v" << arg[4] << "}, thing@" << VRegB_35c(); |
| break; |
| } |
| break; |
| } |
| case k3rc: { |
| switch (Opcode()) { |
| case INVOKE_VIRTUAL_RANGE: |
| case INVOKE_SUPER_RANGE: |
| case INVOKE_DIRECT_RANGE: |
| case INVOKE_STATIC_RANGE: |
| case INVOKE_INTERFACE_RANGE: |
| if (file != NULL) { |
| uint32_t method_idx = VRegB_3rc(); |
| os << StringPrintf("%s, {v%d .. v%d}, ", opcode, VRegC_3rc(), (VRegC_3rc() + VRegA_3rc() - 1)) |
| << PrettyMethod(method_idx, *file) << " // method@" << method_idx; |
| break; |
| } // else fall-through |
| case INVOKE_VIRTUAL_RANGE_QUICK: |
| if (file != NULL) { |
| uint32_t method_idx = VRegB_3rc(); |
| os << StringPrintf("%s, {v%d .. v%d}, ", opcode, VRegC_3rc(), (VRegC_3rc() + VRegA_3rc() - 1)) |
| << "// vtable@" << method_idx; |
| break; |
| } // else fall-through |
| default: |
| os << StringPrintf("%s, {v%d .. v%d}, thing@%d", opcode, VRegC_3rc(), |
| (VRegC_3rc() + VRegA_3rc() - 1), VRegB_3rc()); |
| break; |
| } |
| break; |
| } |
| case k51l: os << StringPrintf("%s v%d, #%+" PRId64, opcode, VRegA_51l(), VRegB_51l()); break; |
| default: os << " unknown format (" << DumpHex(5) << ")"; break; |
| } |
| return os.str(); |
| } |
| |
| std::ostream& operator<<(std::ostream& os, const Instruction::Code& code) { |
| return os << Instruction::Name(code); |
| } |
| |
| } // namespace art |
