From c81b3d4757905498f1dcdbca59184410666da248 Mon Sep 17 00:00:00 2001
From: Alexander Boettcher <alexander.boettcher@genode-labs.com>
Date: Fri, 24 Jun 2022 11:14:26 +0200
Subject: [PATCH] base: add check whether stack belongs to ep

Add method to check whether a given pointer are part of the primary stack
of the rpc entrypoint.

Issue #4540
---
 repos/base/include/base/rpc_server.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/repos/base/include/base/rpc_server.h b/repos/base/include/base/rpc_server.h
index 6749849d22..66998550eb 100644
--- a/repos/base/include/base/rpc_server.h
+++ b/repos/base/include/base/rpc_server.h
@@ -481,6 +481,17 @@ class Genode::Rpc_entrypoint : Thread, public Object_pool<Rpc_object_base>
 		 * This method is solely needed on Linux.
 		 */
 		bool is_myself() const;
+
+		/**
+		 * Check whether given stack info matches stack of the entrypoint.
+		 *
+		 * \noapi
+		 *
+		 */
+		bool myself(addr_t const ptr) const
+		{
+			return addr_t(stack_base()) <= ptr && ptr <= addr_t(stack_top());
+		}
 };