llvm-project

003a2bf9 - [lldb][Darwin] Change DynamicLoaderDarwin to default to new SPI (#126171)

[lldb][Darwin] Change DynamicLoaderDarwin to default to new SPI (#126171) In Sep 2016 and newer Darwin releases, debugserver uses libdyld SPI to gather information about the binaries loaded in a process. Before Sep 2016, lldb would inspect the dyld internal data structures directly itself to find this information. DynamicLoaderDarwin::UseDYLDSPI currently defaults to the old inspect-dyld-internal-structures method for binaries (DynamicLoaderMacOSXDYLD). If it detects that the Process' host OS version is new enough, it enables the newer libdyld SPI methods in debugserver (DynamicLoaderMacOS). This patch changes the default to use the new libdyld SPI interfaces. If the Process has a HostOS and it is one of the four specific OSes that existed in 2015 (Mac OS X, iOS, tvOS, watchOS) with an old version number, then we will enable the old DynamicLoader plugin. If this debug session is a corefile, we will always use the old DynamicLoader plugin -- the libdyld SPI cannot run against a corefile, lldb must read metadata or the dyld internal data structures in the corefile to find the loaded binaries.