Rewrite Obj-C workflow in Rust

This is functionally equivalent to the previous workflow_objc, with the
following changes:
1. It mutates the `core.function.metaAnalysis` workflow rather than
   registering a new named workflow. The activities now all check for
   the presence of the Objective-C metadata added by `ObjCProcessor` to
   determine whether they should do work, rather than relying on
   `MachoView` to override the function workflow when Objective-C
   metadata is present. This fixes
   https://github.com/Vector35/binaryninja-api/issues/6779.
2. The auto-inlining of `objc_msgSend` selector stub functions is
   performed in a separate activity from the processing of
   `objc_msgSend` call sites. The selector stub inlining activity is
   configured so that it does not run in `DSCView` as the shared cache
   needs different behavior for stub functions more generally that
   `SharedCacheWorkflow` already provides.
3. The way that types like `id` and `SEL` are referenced is fixed so
   that they show up as `id` rather than `objc_struct*`.

This also replaces the Objective-C portion of the shared cache's
workflow, and incorporates several bug fixes that had been applied to it
but not the standalone Objective-C workflow.

1 files changed, 0 insertions, 3 deletions

diff --git a/view/sharedcache/workflow/SharedCacheWorkflow.cpp b/view/sharedcache/workflow/SharedCacheWorkflow.cpp
index 3844516f..dcdf6c23 100644
--- a/view/sharedcache/workflow/SharedCacheWorkflow.cpp
+++ b/view/sharedcache/workflow/SharedCacheWorkflow.cpp
@@ -15,8 +15,6 @@
 #include "thread"
 #include <shared_mutex>
 
-#include "ObjCActivity.h"
-
 using namespace BinaryNinja;
 using namespace SharedCacheAPI;
 
@@ -373,7 +371,6 @@ void SharedCacheWorkflow::Register()
 	Ref<Workflow> workflow = Workflow::Get("core.function.metaAnalysis")->Clone("core.function.metaAnalysis");
 
 	// Register and insert activities here.
-	ObjCActivity::Register(*workflow);
 	workflow->RegisterActivity(new Activity(R"({
 	  "name": "core.analysis.sharedCache.analysis",
 	  "eligibility": {