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// Copyright 2019 Google
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "Crashlytics/Crashlytics/Helpers/FIRCLSFeatures.h"
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#pragma once
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#if CLS_MACH_EXCEPTION_SUPPORTED
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#include <mach/mach.h>
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#include <pthread.h>
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#include <stdbool.h>
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// must be at least PTHREAD_STACK_MIN size
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#define CLS_MACH_EXCEPTION_HANDLER_STACK_SIZE (256 * 1024)
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#pragma mark Structures
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#pragma pack(push, 4)
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typedef struct {
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mach_msg_header_t head;
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/* start of the kernel processed data */
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mach_msg_body_t msgh_body;
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mach_msg_port_descriptor_t thread;
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mach_msg_port_descriptor_t task;
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/* end of the kernel processed data */
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NDR_record_t NDR;
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exception_type_t exception;
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mach_msg_type_number_t codeCnt;
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mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
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mach_msg_trailer_t trailer;
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} MachExceptionMessage;
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typedef struct {
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mach_msg_header_t head;
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NDR_record_t NDR;
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kern_return_t retCode;
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} MachExceptionReply;
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#pragma pack(pop)
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typedef struct {
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mach_msg_type_number_t count;
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exception_mask_t masks[EXC_TYPES_COUNT];
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exception_handler_t ports[EXC_TYPES_COUNT];
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exception_behavior_t behaviors[EXC_TYPES_COUNT];
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thread_state_flavor_t flavors[EXC_TYPES_COUNT];
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} FIRCLSMachExceptionOriginalPorts;
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typedef struct {
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mach_port_t port;
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pthread_t thread;
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const char* path;
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exception_mask_t mask;
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FIRCLSMachExceptionOriginalPorts originalPorts;
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} FIRCLSMachExceptionReadContext;
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#pragma mark - API
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void FIRCLSMachExceptionInit(FIRCLSMachExceptionReadContext* context);
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void FIRCLSMachExceptionCheckHandlers(void);
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void FIRCLSMachExceptionNameLookup(exception_type_t number,
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mach_exception_data_type_t code,
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const char** name,
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const char** codeName);
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#else
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#define CLS_MACH_EXCEPTION_HANDLER_STACK_SIZE 0
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#endif
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