2 * Copyright (C) 2014 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef ART_DISASSEMBLER_DISASSEMBLER_ARM64_H_
18 #define ART_DISASSEMBLER_DISASSEMBLER_ARM64_H_
20 #include "disassembler.h"
22 // TODO(VIXL): Make VIXL compile with -Wshadow.
23 #pragma GCC diagnostic push
24 #pragma GCC diagnostic ignored "-Wshadow"
25 #include "aarch64/decoder-aarch64.h"
26 #include "aarch64/disasm-aarch64.h"
27 #pragma GCC diagnostic pop
32 class CustomDisassembler FINAL : public vixl::aarch64::Disassembler {
34 explicit CustomDisassembler(DisassemblerOptions* options)
35 : vixl::aarch64::Disassembler(),
36 read_literals_(options->can_read_literals_),
37 base_address_(options->base_address_),
38 end_address_(options->end_address_),
40 if (!options->absolute_addresses_) {
42 reinterpret_cast<const vixl::aarch64::Instruction*>(options->base_address_));
46 // Use register aliases in the disassembly.
47 void AppendRegisterNameToOutput(const vixl::aarch64::Instruction* instr,
48 const vixl::aarch64::CPURegister& reg) OVERRIDE;
50 // Improve the disassembly of literal load instructions.
51 void VisitLoadLiteral(const vixl::aarch64::Instruction* instr) OVERRIDE;
53 // Improve the disassembly of thread offset.
54 void VisitLoadStoreUnsignedOffset(const vixl::aarch64::Instruction* instr) OVERRIDE;
57 // Indicate if the disassembler should read data loaded from literal pools.
58 // This should only be enabled if reading the target of literal loads is safe.
59 // Here are possible outputs when the option is on or off:
60 // read_literals_ | disassembly
61 // true | 0x72681558: 1c000acb ldr s11, pc+344 (addr 0x726816b0)
62 // false | 0x72681558: 1c000acb ldr s11, pc+344 (addr 0x726816b0) (3.40282e+38)
63 const bool read_literals_;
65 // Valid address range: [base_address_, end_address_)
66 const void* const base_address_;
67 const void* const end_address_;
69 DisassemblerOptions* options_;
72 class DisassemblerArm64 FINAL : public Disassembler {
74 explicit DisassemblerArm64(DisassemblerOptions* options) :
75 Disassembler(options), disasm(options) {
76 decoder.AppendVisitor(&disasm);
79 size_t Dump(std::ostream& os, const uint8_t* begin) OVERRIDE;
80 void Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) OVERRIDE;
83 vixl::aarch64::Decoder decoder;
84 CustomDisassembler disasm;
86 DISALLOW_COPY_AND_ASSIGN(DisassemblerArm64);
92 #endif // ART_DISASSEMBLER_DISASSEMBLER_ARM64_H_