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, 38 deletions

diff --git a/plugins/workflow_objc/Performance.h b/plugins/workflow_objc/Performance.h
deleted file mode 100644
index 7e497b4e..00000000
--- a/plugins/workflow_objc/Performance.h
+++ /dev/null
@@ -1,38 +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 <chrono>
-
-using high_res_clock = std::chrono::high_resolution_clock;
-
-/**
- * Utilities for measuring performance.
- */
-class Performance {
-public:
-    /**
-     * Get the current time.
-     */
-    static high_res_clock::time_point now()
-    {
-        return high_res_clock::now();
-    }
-
-    /**
-     * Get the current elapsed time from a given start time.
-     *
-     * Accepts a unit of measure template parameter for the result.
-     */
-    template <typename T>
-    static T elapsed(high_res_clock::time_point start)
-    {
-        auto end = high_res_clock::now();
-        return std::chrono::duration_cast<T>(end - start);
-    }
-};