2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
141 lines
3.8 KiB
C++
141 lines
3.8 KiB
C++
//===-- Opcode.cpp ----------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Core/Opcode.h"
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#include "lldb/Utility/DataBufferHeap.h"
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#include "lldb/Utility/DataExtractor.h"
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#include "lldb/Utility/Endian.h"
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#include "lldb/Utility/Stream.h"
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#include "lldb/lldb-forward.h"
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#include <memory>
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#include <inttypes.h>
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using namespace lldb;
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using namespace lldb_private;
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int Opcode::Dump(Stream *s, uint32_t min_byte_width) {
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const uint32_t previous_bytes = s->GetWrittenBytes();
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switch (m_type) {
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case Opcode::eTypeInvalid:
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s->PutCString("<invalid>");
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break;
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case Opcode::eType8:
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s->Printf("0x%2.2x", m_data.inst8);
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break;
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case Opcode::eType16:
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s->Printf("0x%4.4x", m_data.inst16);
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break;
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case Opcode::eType16_2:
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case Opcode::eType32:
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s->Printf("0x%8.8x", m_data.inst32);
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break;
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case Opcode::eType64:
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s->Printf("0x%16.16" PRIx64, m_data.inst64);
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break;
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case Opcode::eTypeBytes:
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for (uint32_t i = 0; i < m_data.inst.length; ++i) {
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if (i > 0)
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s->PutChar(' ');
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s->Printf("%2.2x", m_data.inst.bytes[i]);
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}
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break;
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}
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uint32_t bytes_written_so_far = s->GetWrittenBytes() - previous_bytes;
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// Add spaces to make sure bytes display comes out even in case opcodes aren't
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// all the same size.
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if (bytes_written_so_far < min_byte_width)
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s->Printf("%*s", min_byte_width - bytes_written_so_far, "");
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return s->GetWrittenBytes() - previous_bytes;
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}
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lldb::ByteOrder Opcode::GetDataByteOrder() const {
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if (m_byte_order != eByteOrderInvalid) {
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return m_byte_order;
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}
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switch (m_type) {
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case Opcode::eTypeInvalid:
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break;
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case Opcode::eType8:
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case Opcode::eType16:
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case Opcode::eType16_2:
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case Opcode::eType32:
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case Opcode::eType64:
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return endian::InlHostByteOrder();
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case Opcode::eTypeBytes:
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break;
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}
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return eByteOrderInvalid;
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}
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uint32_t Opcode::GetData(DataExtractor &data) const {
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uint32_t byte_size = GetByteSize();
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uint8_t swap_buf[8];
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const void *buf = nullptr;
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if (byte_size > 0) {
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if (!GetEndianSwap()) {
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if (m_type == Opcode::eType16_2) {
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// 32 bit thumb instruction, we need to sizzle this a bit
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swap_buf[0] = m_data.inst.bytes[2];
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swap_buf[1] = m_data.inst.bytes[3];
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swap_buf[2] = m_data.inst.bytes[0];
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swap_buf[3] = m_data.inst.bytes[1];
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buf = swap_buf;
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} else {
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buf = GetOpcodeDataBytes();
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}
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} else {
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switch (m_type) {
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case Opcode::eTypeInvalid:
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break;
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case Opcode::eType8:
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buf = GetOpcodeDataBytes();
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break;
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case Opcode::eType16:
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*(uint16_t *)swap_buf = llvm::ByteSwap_16(m_data.inst16);
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buf = swap_buf;
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break;
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case Opcode::eType16_2:
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swap_buf[0] = m_data.inst.bytes[1];
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swap_buf[1] = m_data.inst.bytes[0];
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swap_buf[2] = m_data.inst.bytes[3];
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swap_buf[3] = m_data.inst.bytes[2];
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buf = swap_buf;
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break;
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case Opcode::eType32:
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*(uint32_t *)swap_buf = llvm::ByteSwap_32(m_data.inst32);
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buf = swap_buf;
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break;
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case Opcode::eType64:
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*(uint32_t *)swap_buf = llvm::ByteSwap_64(m_data.inst64);
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buf = swap_buf;
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break;
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case Opcode::eTypeBytes:
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buf = GetOpcodeDataBytes();
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break;
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}
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}
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}
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if (buf != nullptr) {
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DataBufferSP buffer_sp;
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buffer_sp = std::make_shared<DataBufferHeap>(buf, byte_size);
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data.SetByteOrder(GetDataByteOrder());
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data.SetData(buffer_sp);
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return byte_size;
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}
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data.Clear();
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return 0;
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}
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