> **Xcode 13 Release Notes > Instruments > New Features**
> To support the new JSON-format crash logs generated in macOS Monterey and iOS 15, Instruments includes a new CrashSymbolicator.py script. This Python 3 script replaces the symbolicatecrash utility for JSON-format logs and supports inlined frames with its default options. For more information, see: CrashSymbolicator.py --help. CrashSymbolicator.py is located in the Contents/SharedFrameworks/CoreSymbolicationDT.framework/Resources/ subdirectory within Xcode 13. (78891800)
The atos command converts numeric (数字的) addresses to their symbolic (符号的) equivalents (复数, 等同物, 对应物). If full debug symbol information is available, for example in a .app.dSYM sitting beside a .app, then the output of atos will include file name and source line number information.
-o <binary-image-file> | <dSYM>
The path to a binary image file or dSYM in which to look up symbols.
The load address of the binary image. This value is always assumed to be in hex, even without a “0x” prefix. The input addresses are assumed to be in a binary image with that load address. Load addresses for binary images can be found in the Binary Images: section at the bottom of crash, sample, leaks, and malloc_history reports.
The particular architecure of a binary image file in which to look up symbols.
// atos -arch 指令集 -0 dsym -l 调用地址 符号模块地址
// load adress:可执行指令部分相对镜像文件中的起始加载地址 address to symbolicate：调用函数的地址
atos -arch<Binary Architecture>-o<Path to dSYM file>/Contents/Resources/DWARF/<binary image name>-l<load address><address to symbolicate>