blob: 2e851c5861051fcefe631591b53130eb33ebe1c6 [file] [log] [blame]
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/profiler/chrome_unwind_info_android.h"
#include "base/containers/buffer_iterator.h"
namespace base {
ChromeUnwindInfoAndroid::ChromeUnwindInfoAndroid(
span<const uint8_t> unwind_instruction_table,
span<const uint8_t> function_offset_table,
span<const FunctionTableEntry> function_table,
span<const uint32_t> page_table)
: unwind_instruction_table(unwind_instruction_table),
function_offset_table(function_offset_table),
function_table(function_table),
page_table(page_table) {}
ChromeUnwindInfoAndroid::~ChromeUnwindInfoAndroid() = default;
ChromeUnwindInfoAndroid::ChromeUnwindInfoAndroid(
const ChromeUnwindInfoAndroid& other) = default;
ChromeUnwindInfoAndroid& ChromeUnwindInfoAndroid::operator=(
const ChromeUnwindInfoAndroid& other) = default;
ChromeUnwindInfoAndroid::ChromeUnwindInfoAndroid(
ChromeUnwindInfoAndroid&& other) = default;
ChromeUnwindInfoAndroid& ChromeUnwindInfoAndroid::operator=(
ChromeUnwindInfoAndroid&& other) = default;
ChromeUnwindInfoAndroid CreateChromeUnwindInfoAndroid(
span<const uint8_t> data) {
BufferIterator<const uint8_t> data_iterator(data);
const auto* header = data_iterator.Object<ChromeUnwindInfoHeaderAndroid>();
DCHECK(header);
data_iterator.Seek(header->page_table_byte_offset);
const auto page_table =
data_iterator.Span<uint32_t>(header->page_table_entries);
DCHECK(!page_table.empty());
data_iterator.Seek(header->function_offset_table_byte_offset);
const auto function_offset_table =
data_iterator.Span<uint8_t>(header->function_offset_table_size_in_bytes);
DCHECK(!function_offset_table.empty());
data_iterator.Seek(header->function_table_byte_offset);
const auto function_table =
data_iterator.Span<FunctionTableEntry>(header->function_table_entries);
DCHECK(!function_table.empty());
data_iterator.Seek(header->unwind_instruction_table_byte_offset);
const auto unwind_instruction_table = data_iterator.Span<uint8_t>(
header->unwind_instruction_table_size_in_bytes);
DCHECK(!unwind_instruction_table.empty());
return ChromeUnwindInfoAndroid{unwind_instruction_table,
function_offset_table, function_table,
page_table};
}
} // namespace base