Fixed Register cache clear and reading XPSR (#852)

* Fixed Register cache clear
* changed expression to receive value from GDB

Author: thorstendb-ARM

src/views/component-viewer/component-viewer-target-access.ts

@@ -189,7 +189,7 @@ export class ComponentViewerTargetAccess {
                 return undefined;
             }
             const args: DebugProtocol.EvaluateArguments = {
-                expression: `$${register}`,
+                expression: `(void*)$${register}`,
                 frameId, // Currently required by CDT GDB Adapter
                 context: 'hover'
             };

src/views/component-viewer/scvd-eval-interface.ts

@@ -58,6 +58,7 @@ export class ScvdEvalInterface implements ModelHost, DataAccessHost, IntrinsicPr
 
     public resetEvalCaches(): void {
         this._caches.clearAll();
+        this._registerCache.clear();
         componentViewerLogger.trace('[ScvdEvalInterface] Reset all caches');
     }
 

src/views/component-viewer/test/unit/parser-evaluator/eval-interface/scvd-eval-interface.test.ts

@@ -96,6 +96,7 @@ function makeEval(overrides: Partial<ScvdDebugTarget> & Partial<MemoryHost> & Pa
     const regHost: Partial<RegisterHost> = {
         read: jest.fn().mockReturnValue(undefined),
         write: jest.fn(),
+        clear: jest.fn(),
         ...merged
     };
     const debugTarget: Partial<ScvdDebugTarget> = {