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, 79 deletions

diff --git a/plugins/workflow_objc/GlobalState.h b/plugins/workflow_objc/GlobalState.h
deleted file mode 100644
index 38aeb384..00000000
--- a/plugins/workflow_objc/GlobalState.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (c) 2022-2023 Jon Palmisciano. All rights reserved.
- *
- * Use of this source code is governed by the BSD 3-Clause license; the full
- * terms of the license can be found in the LICENSE.txt file.
- */
-
-#pragma once
-
-#include <condition_variable>
-#include "BinaryNinja.h"
-
-#include "MessageHandler.h"
-
-/**
- * Namespace to hold metadata flag key constants.
- */
-namespace Flag {
-
-constexpr auto DidRunWorkflow = "objectiveNinja.didRunWorkflow";
-constexpr auto DidRunStructureAnalysis = "objectiveNinja.didRunStructureAnalysis";
-
-}
-
-struct AnalysisInfo {
-    std::uint64_t imageBase;
-    bool hasObjcStubs = false;
-    std::pair<uint64_t, uint64_t> objcStubsStartEnd;
-    std::unordered_map<uint64_t, std::vector<uint64_t>> selRefToImp;
-    std::unordered_map<uint64_t, std::vector<uint64_t>> selToImp;
-};
-
-typedef std::shared_ptr<AnalysisInfo> SharedAnalysisInfo;
-
-/**
- * Global state/storage interface.
- */
-class GlobalState {
-    /**
-     * Get the ID for a view.
-     */
-    static BinaryViewID id(BinaryViewRef);
-
-public:
-    /**
-     * Get the analysis info for a view.
-     */
-    static SharedAnalysisInfo analysisInfo(BinaryViewRef);
-
-    /**
-     * Get ObjC Message Handler for a view
-     */
-    static MessageHandler* messageHandler(BinaryViewRef);
-
-    /**
-     * Check if analysis info exists for a view.
-     */
-    static bool hasAnalysisInfo(BinaryViewRef);
-
-    /**
-     * Add a view to the list of ignored views.
-     */
-    static void addIgnoredView(BinaryViewRef);
-
-    /**
-     * Check if a view is ignored.
-     */
-    static bool viewIsIgnored(BinaryViewRef);
-
-    /**
-     * Check if the a metadata flag is present for a view.
-     */
-    static bool hasFlag(BinaryViewRef, const std::string&);
-
-    /**
-     * Set a metadata flag for a view.
-     */
-    static void setFlag(BinaryViewRef, const std::string&);
-};