mach_vm_compat.h - mozsearch

// Copyright (c) 2011, Google Inc.

// All rights reserved.

//

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// modification, are permitted provided that the following conditions are

// met:

//

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// notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

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// contributors may be used to endorse or promote products derived from

// this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

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#ifndef CLIENT_MAC_GENERATOR_MACH_VM_COMPAT_H_

#define CLIENT_MAC_GENERATOR_MACH_VM_COMPAT_H_

#include <TargetConditionals.h>

// On iOS 5 and higher, mach/mach_vm.h is not supported. Use the corresponding

// vm_map functions instead.

#if TARGET_OS_IPHONE

#include <mach/vm_map.h>

#define mach_vm_address_t vm_address_t

#define mach_vm_deallocate vm_deallocate

#define mach_vm_read vm_read

#define mach_vm_region_recurse vm_region_recurse_64

#define mach_vm_size_t vm_size_t

#else

#include <mach/mach_vm.h>

#endif  // TARGET_OS_IPHONE

// This is the current (as of macOS 11.2.3) raw format of the data in the

// __crash_info section of the __DATA segment. It must be read from memory

// (__crash_info sections in file system modules are always empty of useful

// data). The data (and that of its strings) may be readable from an out-of-

// process image, but generally only if the module is in the dyld shared

// cache. A __crash_info section is considered "empty of useful data" if all

// of its fields besides 'version' are zero. The __crash_info section is only

// present on macOS. Apple may add new fields to this structure in the future,

// as they added 'abort_cause' when 'version' changed from '4' to '5'.

// Breakpad should take this into account, and provide a way for new fields to

// be added to future versions of MDRawMacCrashInfoRecord without breaking

// older code.

typedef struct {                // Non-raw format

  uint64_t version;             // unsigned long

  uint64_t message;             // char *

  uint64_t signature_string;    // char *

  uint64_t backtrace;           // char *

  uint64_t message2;            // char *

  // We can't use uint64_t for 'thread' in non-raw structures: Though uint64_t

  // is the same size on all platforms, it's "unsigned long" on some platforms

  // (like Android and Linux) and "unsigned long long" on others (like macOS

  // and Windows).

  uint64_t thread;              // uint64_t, but we use unsigned long long

  uint64_t dialog_mode;         // unsigned int

  // There's a string in the OSAnalytics private framework ("Abort Cause %lld")

  // which hints that this field's non-raw format is long long.

  uint64_t abort_cause;         // long long, only present when

                                //   'version' > 4

} crashreporter_annotations_t;

// Defines for calls to getsectdatafromheader_64() or getsectdatafromheader().

// __LP64__ is true on both amd64 and arm64 (Apple Silicon) hardware.

#ifdef __LP64__

  #define getsectdatafromheader_func getsectdatafromheader_64

  typedef uint64_t getsectdata_size_type;

#else

  #define getsectdatafromheader_func getsectdatafromheader

  typedef uint32_t getsectdata_size_type;

#endif

#endif  // CLIENT_MAC_GENERATOR_MACH_VM_COMPAT_H_