dbghelp: Implement arm_get_addr.

dlls/dbghelp/cpu_arm.c

@@ -32,15 +32,18 @@ WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
 static unsigned arm_get_addr(HANDLE hThread, const CONTEXT* ctx,
                              enum cpu_addr ca, ADDRESS64* addr)
 {
+    addr->Mode    = AddrModeFlat;
+    addr->Segment = 0; /* don't need segment */
     switch (ca)
     {
-    case cpu_addr_pc:
-    case cpu_addr_stack:
-    case cpu_addr_frame:
-    default:
-         FIXME("not done for ARM\n");
-    }
+#ifdef __arm__
+    case cpu_addr_pc:    addr->Offset = ctx->Pc; return TRUE;
+    case cpu_addr_stack: addr->Offset = ctx->Sp; return TRUE;
+    case cpu_addr_frame: addr->Offset = ctx->Fp; return TRUE;
+#endif
+    default: addr->Mode = -1;
         return FALSE;
+    }
 }
 
 static BOOL arm_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context)