Added a QEMU module execution harness for the Cortex-M3 and M4 ports (#821)dev

No Cortex-M module port ran in CI. gcc_check compiles each port's module manager
sources and links nothing that loads a module, and the host tests under
test/tx/module_manager compile a few portable sources against stubs. A module's
start-up, its kernel calls through the supervisor call, the MPU programming on context
switches and the fault path that terminates a misbehaving module were exercised only
on the Cortex-R52 FVP.

test/tx/cmake/module_qemu is a stand-alone CMake project, like test/tx/cmake/riscv, that
builds the kernel and Module Manager with a module port's headers, builds test modules
position-independent with the port's module linker script, embeds their raw images in
manager images, and registers each image with CTest. A Python runner starts it on
QEMU's MPS2 board for the core, mps2-an385 for cortex_m3 and mps2-an386 for cortex_m4
built for its FPU with the hard-float ABI, and judges the result line the image prints
over semihosting and the exit status it sets. Three images per port: a protected module
loaded, started, exercising queues, semaphores, a worker thread and the timer, stopped
and unloaded twice with its memory returned; the same module faulting on a read of
kernel memory, reported to the fault notification with its module, thread and address
and terminated, then stopped and unloaded; and the module built privileged and
unprotected, whose identical read succeeds. The fault image is also the check that
QEMU's MPU enforces at all. The new module_qemu workflow runs both ports on changes to
common/, common_modules/, the two module ports and the harness, installing QEMU from
the Ubuntu archive through the bounded apt helpers in scripts/tx_ci_common.sh.

Both ports pass 3/3 on QEMU 8.2.2 with Arm GNU 14.3.rel1, using the workflow's commands,
with zero compiler warnings; configure, build and run take 9 seconds for both. The AI
disclosure check passes. The workflow itself has not run on GitHub yet.

Assisted-by: Claude Code (Opus 5.5) <[email protected]>

1 files changed, 57 insertions, 0 deletions

diff --git a/test/tx/cmake/module_qemu/tests/harness_checks.c b/test/tx/cmake/module_qemu/tests/harness_checks.c
new file mode 100644
index 00000000..4b7cff05
--- /dev/null
+++ b/test/tx/cmake/module_qemu/tests/harness_checks.c
@@ -0,0 +1,57 @@
+/***************************************************************************
+ * Copyright (c) 2026 Eclipse ThreadX contributors
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ *
+ * AI Disclosure: This file was largely AI-generated by Claude Code (Opus 5.5).
+ * The AI-generated portions may be considered public domain (CC0-1.0)
+ * and not subject to the project's licence. The human contributor has
+ * reviewed and verified that the code is correct.
+ *
+ * SPDX-License-Identifier: MIT and CC0-1.0
+ **************************************************************************/
+
+
+/**************************************************************************/
+/**************************************************************************/
+/**                                                                       */
+/** ThreadX Test                                                          */
+/**                                                                       */
+/**   Module execution harness: checks shared by the test images          */
+/**                                                                       */
+/**************************************************************************/
+/**************************************************************************/
+
+#include "harness_checks.h"
+
+
+VOID  harness_check_services(ULONG cycle)
+{
+    harness_expect("module start thread ran", MODULE_SHARED[MODULE_OUT_STARTED], MODULE_STARTED_MAGIC);
+    harness_expect("module saw the load cycle", MODULE_SHARED[MODULE_OUT_CYCLE_SEEN], cycle);
+    harness_expect("module object allocation", MODULE_SHARED[MODULE_OUT_OBJECT_STATUS], (ULONG) TX_SUCCESS);
+    harness_expect("module object creation and queue send", MODULE_SHARED[MODULE_OUT_CREATE_STATUS], (ULONG) TX_SUCCESS);
+    harness_expect("module worker received the message", MODULE_SHARED[MODULE_OUT_QUEUE_VALUE], MODULE_QUEUE_MESSAGE);
+    harness_expect("module worker ran once", MODULE_SHARED[MODULE_OUT_WORKER_RUNS], 1UL);
+    harness_expect("module semaphore get", MODULE_SHARED[MODULE_OUT_SEMAPHORE_STATUS], (ULONG) TX_SUCCESS);
+    harness_expect("module sleep lasted its ticks",
+                   (ULONG) (MODULE_SHARED[MODULE_OUT_SLEEP_TICKS] >= EXPECTED_SLEEP_TICKS), (ULONG) TX_TRUE);
+}
+
+
+ULONG  harness_module_pool_available(VOID)
+{
+TX_NAME_CONST CHAR *name;
+ULONG       available;
+ULONG       fragments;
+TX_THREAD   *first_suspended;
+ULONG       suspended_count;
+TX_BYTE_POOL *next_pool;
+
+    available = 0UL;
+    (VOID) tx_byte_pool_info_get(&_txm_module_manager_byte_pool, &name, &available, &fragments,
+                                 &first_suspended, &suspended_count, &next_pool);
+    return(available);
+}