1 //===-- Opcode.cpp ----------------------------------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #include "lldb/Core/Opcode.h"
11 #include "lldb/Utility/DataBufferHeap.h"
12 #include "lldb/Utility/DataExtractor.h"
13 #include "lldb/Utility/Endian.h"
14 #include "lldb/Utility/Stream.h"
15 #include "lldb/lldb-forward.h"
22 using namespace lldb_private;
24 int Opcode::Dump(Stream *s, uint32_t min_byte_width) {
25 const uint32_t previous_bytes = s->GetWrittenBytes();
27 case Opcode::eTypeInvalid:
28 s->PutCString("<invalid>");
31 s->Printf("0x%2.2x", m_data.inst8);
34 s->Printf("0x%4.4x", m_data.inst16);
36 case Opcode::eType16_2:
38 s->Printf("0x%8.8x", m_data.inst32);
42 s->Printf("0x%16.16" PRIx64, m_data.inst64);
45 case Opcode::eTypeBytes:
46 for (uint32_t i = 0; i < m_data.inst.length; ++i) {
49 s->Printf("%2.2x", m_data.inst.bytes[i]);
54 uint32_t bytes_written_so_far = s->GetWrittenBytes() - previous_bytes;
55 // Add spaces to make sure bytes display comes out even in case opcodes aren't
57 if (bytes_written_so_far < min_byte_width)
58 s->Printf("%*s", min_byte_width - bytes_written_so_far, "");
59 return s->GetWrittenBytes() - previous_bytes;
62 lldb::ByteOrder Opcode::GetDataByteOrder() const {
63 if (m_byte_order != eByteOrderInvalid) {
67 case Opcode::eTypeInvalid:
71 case Opcode::eType16_2:
74 return endian::InlHostByteOrder();
75 case Opcode::eTypeBytes:
78 return eByteOrderInvalid;
81 uint32_t Opcode::GetData(DataExtractor &data) const {
82 uint32_t byte_size = GetByteSize();
84 const void *buf = nullptr;
87 if (!GetEndianSwap()) {
88 if (m_type == Opcode::eType16_2) {
89 // 32 bit thumb instruction, we need to sizzle this a bit
90 swap_buf[0] = m_data.inst.bytes[2];
91 swap_buf[1] = m_data.inst.bytes[3];
92 swap_buf[2] = m_data.inst.bytes[0];
93 swap_buf[3] = m_data.inst.bytes[1];
96 buf = GetOpcodeDataBytes();
100 case Opcode::eTypeInvalid:
103 buf = GetOpcodeDataBytes();
105 case Opcode::eType16:
106 *(uint16_t *)swap_buf = llvm::ByteSwap_16(m_data.inst16);
109 case Opcode::eType16_2:
110 swap_buf[0] = m_data.inst.bytes[1];
111 swap_buf[1] = m_data.inst.bytes[0];
112 swap_buf[2] = m_data.inst.bytes[3];
113 swap_buf[3] = m_data.inst.bytes[2];
116 case Opcode::eType32:
117 *(uint32_t *)swap_buf = llvm::ByteSwap_32(m_data.inst32);
120 case Opcode::eType64:
121 *(uint32_t *)swap_buf = llvm::ByteSwap_64(m_data.inst64);
124 case Opcode::eTypeBytes:
125 buf = GetOpcodeDataBytes();
130 if (buf != nullptr) {
131 DataBufferSP buffer_sp;
133 buffer_sp = std::make_shared<DataBufferHeap>(buf, byte_size);
134 data.SetByteOrder(GetDataByteOrder());
135 data.SetData(buffer_sp);