blob: 87cf2c9ae068d6a84b63948bf394ad178cb67bd4 [file] [log] [blame]
// Copyright 2019 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.
#include <stdint.h>
#include <optional>
#include "src/developer/debug/ipc/protocol.h"
namespace debug_ipc {
// Most exceptions can be convered just from the Zircon exception. But some require looking at the
// debug registers to disambiguate. Since getting the debug registers is uncommon, this API takes a
// callback that will retrieve them if needed.
class Arm64ExceptionInfo {
// Get the value of the ESR register. A nullopt indicates failure.
virtual std::optional<uint32_t> FetchESR() const = 0;
class X64ExceptionInfo {
struct DebugRegs {
uint64_t dr0 = 0;
uint64_t dr1 = 0;
uint64_t dr2 = 0;
uint64_t dr3 = 0;
uint64_t dr6 = 0;
uint64_t dr7 = 0;
// Get the necessary debug registers for decoding exceptions. A nullopt indicates failure.
virtual std::optional<DebugRegs> FetchDebugRegs() const = 0;
ExceptionType DecodeException(uint32_t code, const X64ExceptionInfo& info);
ExceptionType DecodeException(uint32_t code, const Arm64ExceptionInfo& info);
} // namespace debug_ipc