| // Copyright 2020 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_DEVELOPER_DEBUG_DEBUG_AGENT_ALIGN_H_ |
| #define SRC_DEVELOPER_DEBUG_DEBUG_AGENT_ALIGN_H_ |
| |
| #include <optional> |
| |
| #include "src/developer/debug/shared/address_range.h" |
| |
| namespace debug_agent { |
| |
| // Depending on their size, watchpoints can only be inserted into aligned ranges. The alignment is |
| // as follows: |
| // |
| // Size Alignment |
| // 1 1 byte |
| // 2 2 byte |
| // 4 4 byte |
| // 8 8 byte |
| // |
| // A given range could be un-aligned (eg. observe two bytes unaligned). This will attempt to create |
| // a bigger range that will cover that range, so that the watchpoint can be installed and still |
| // track this range. |
| // |
| // If the range cannot be aligned (eg. unaligned 8 byte range), it will return a null option. |
| std::optional<debug::AddressRange> AlignRange(const debug::AddressRange& range); |
| |
| } // namespace debug_agent |
| |
| #endif // SRC_DEVELOPER_DEBUG_DEBUG_AGENT_ALIGN_H_ |
