1 // Copyright 2020 The Pigweed Authors
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
7 // https://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
15 // This facade provides an API for capturing the contents of a
16 // pw_cpu_exception_State struct in a platform-agnostic way. While this facade
17 // does not provide a means to directly access individual members of a
18 // pw_cpu_exception_State object, it does allow dumping CPU state without
19 // needing to know any specifics about the underlying architecture.
25 // Forward declaration of pw_cpu_exception_State. Definition provided by
27 struct pw_cpu_exception_State;
29 namespace pw::cpu_exception {
31 // Gets raw CPU state as a single contiguous block of data. The particular
32 // contents will depend on the specific backend and platform.
33 std::span<const uint8_t> RawFaultingCpuState(
34 const pw_cpu_exception_State& cpu_state);
36 // Writes CPU state as a formatted string to a string builder.
37 // NEVER depend on the format of this output. This is exclusively FYI human
39 void ToString(const pw_cpu_exception_State& cpu_state,
40 const std::span<char>& dest);
42 // Logs captured CPU state using pw_log at PW_LOG_LEVEL_INFO.
43 void LogCpuState(const pw_cpu_exception_State& cpu_state);
45 } // namespace pw::cpu_exception