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third_party/crashpad/crashpad/snapshot/mac/cpu_context_mac.h

Index: third_party/crashpad/crashpad/snapshot/mac/cpu_context_mac.h
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+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CRASHPAD_SNAPSHOT_MAC_SNAPSHOT_CPU_CONTEXT_MAC_H_
+#define CRASHPAD_SNAPSHOT_MAC_SNAPSHOT_CPU_CONTEXT_MAC_H_
+
+#include <mach/mach.h>
+
+#include "build/build_config.h"
+#include "snapshot/cpu_context.h"
+#include "util/mach/mach_extensions.h"
+
+namespace crashpad {
+namespace internal {
+
+#if defined(ARCH_CPU_X86_FAMILY) || DOXYGEN
+
+//! \brief Initializes a CPUContextX86 structure from native context structures
+//!     on Mac OS X.
+//!
+//! \a flavor, \a state, and \a state_count may be supplied by exception
+//! handlers in order for the \a context parameter to be initialized by the
+//! thread state received by the exception handler to the extent possible. In
+//! that case, whatever thread state specified by these three parameters will
+//! supersede \a x86_thread_state32, \a x86_float_state32, or \a
+//! x86_debug_state32. If thread state in this format is not available, \a
+//! flavor may be set to `THREAD_STATE_NONE`, and all of \a x86_thread_state32,
+//! \a x86_float_state32, and \a x86_debug_state32 will be honored.
+//!
+//! If \a flavor, \a state, and \a state_count are provided but do not contain
+//! valid values, a message will be logged and their values will be ignored as
+//! though \a flavor were specified as `THREAD_STATE_NONE`.
+//!
+//! \param[out] context The CPUContextX86 structure to initialize.
+//! \param[in] flavor The native thread state flavor of \a state. This may be
+//!     `x86_THREAD_STATE32`, `x86_FLOAT_STATE32`, `x86_DEBUG_STATE32`,
+//!     `x86_THREAD_STATE`, `x86_FLOAT_STATE`, or `x86_DEBUG_STATE`. It may also
+//!     be `THREAD_STATE_NONE` if \a state is not supplied (and is `nullptr`).
+//! \param[in] state The native thread state, which may be a casted pointer to
+//!     `x86_thread_state32_t`, `x86_float_state32_t`, `x86_debug_state32_t`,
+//!     `x86_thread_state`, `x86_float_state`, or `x86_debug_state`. This
+//!     parameter may be `nullptr` to not supply this data, in which case \a
+//!     flavor must be `THREAD_STATE_NONE`. If a “universal” structure is used,
+//!     it must carry 32-bit state data of the correct type.
+//! \param[in] state_count The number of `natural_t`-sized (`int`-sized) units
+//!     in \a state. This may be 0 if \a state is `nullptr`.
+//! \param[in] x86_thread_state32 The state of the thread’s integer registers.
+//! \param[in] x86_float_state32 The state of the thread’s floating-point
+//!     registers.
+//! \param[in] x86_debug_state32 The state of the thread’s debug registers.
+void InitializeCPUContextX86(CPUContextX86* context,
+                             thread_state_flavor_t flavor,
+                             ConstThreadState state,
+                             mach_msg_type_number_t state_count,
+                             const x86_thread_state32_t* x86_thread_state32,
+                             const x86_float_state32_t* x86_float_state32,
+                             const x86_debug_state32_t* x86_debug_state32);
+
+//! \brief Initializes a CPUContextX86_64 structure from native context
+//!     structures on Mac OS X.
+//!
+//! \a flavor, \a state, and \a state_count may be supplied by exception
+//! handlers in order for the \a context parameter to be initialized by the
+//! thread state received by the exception handler to the extent possible. In
+//! that case, whatever thread state specified by these three parameters will
+//! supersede \a x86_thread_state64, \a x86_float_state64, or \a
+//! x86_debug_state64. If thread state in this format is not available, \a
+//! flavor may be set to `THREAD_STATE_NONE`, and all of \a x86_thread_state64,
+//! \a x86_float_state64, and \a x86_debug_state64 will be honored.
+//!
+//! If \a flavor, \a state, and \a state_count are provided but do not contain
+//! valid values, a message will be logged and their values will be ignored as
+//! though \a flavor were specified as `THREAD_STATE_NONE`.
+//!
+//! \param[out] context The CPUContextX86_64 structure to initialize.
+//! \param[in] flavor The native thread state flavor of \a state. This may be
+//!     `x86_THREAD_STATE64`, `x86_FLOAT_STATE64`, `x86_DEBUG_STATE64`,
+//!     `x86_THREAD_STATE`, `x86_FLOAT_STATE`, or `x86_DEBUG_STATE`. It may also
+//!     be `THREAD_STATE_NONE` if \a state is not supplied (and is `nullptr`).
+//! \param[in] state The native thread state, which may be a casted pointer to
+//!     `x86_thread_state64_t`, `x86_float_state64_t`, `x86_debug_state64_t`,
+//!     `x86_thread_state`, `x86_float_state`, or `x86_debug_state`. This
+//!     parameter may be `nullptr` to not supply this data, in which case \a
+//!     flavor must be `THREAD_STATE_NONE`. If a “universal” structure is used,
+//!     it must carry 64-bit state data of the correct type.
+//! \param[in] state_count The number of `int`-sized units in \a state. This may
+//!     be 0 if \a state is `nullptr`.
+//! \param[in] x86_thread_state64 The state of the thread’s integer registers.
+//! \param[in] x86_float_state64 The state of the thread’s floating-point
+//!     registers.
+//! \param[in] x86_debug_state64 The state of the thread’s debug registers.
+void InitializeCPUContextX86_64(CPUContextX86_64* context,
+                                thread_state_flavor_t flavor,
+                                ConstThreadState state,
+                                mach_msg_type_number_t state_count,
+                                const x86_thread_state64_t* x86_thread_state64,
+                                const x86_float_state64_t* x86_float_state64,
+                                const x86_debug_state64_t* x86_debug_state64);
+
+#endif
+
+}  // namespace internal
+}  // namespace crashpad
+
+#endif  // CRASHPAD_SNAPSHOT_MAC_SNAPSHOT_CPU_CONTEXT_MAC_H_