Fixed the invalid module data pointers in the absolute module load (#699)

An absolutely located module has its code and its data placed at two
independent fixed addresses by the module's linker script. The module
preamble carries the code and data sizes but not the data address, so
_txm_module_manager_absolute_load() could not determine where the
module's data area was. It computed txm_module_instance_data_start
from the code size and the preamble size, which yields a size rather
than an address, and it set txm_module_instance_module_data_base_address
one past the end of the byte pool allocation.

Added _txm_module_manager_absolute_load_extended(), which accepts the
module's data area address from the caller. Deprecated
_txm_module_manager_absolute_load(), which now forwards to the extended
service with an unknown data area location and rejects modules that
request memory protection, since the memory protection hardware cannot
be programmed to cover an unknown data area.

Fixes #450

Assisted-by: Copilot (Opus 5) <noreply@github.com>

common_modules/inc/txm_module.h

@@ -9,6 +9,8 @@
  * SPDX-License-Identifier: MIT
  **************************************************************************/
 
+// Some portions generated by Copilot (Opus 5).
+
 
 /**************************************************************************/
 /**************************************************************************/
@@ -569,6 +571,7 @@ VOID  _txm_module_usbx_duo_callback_request(TXM_MODULE_CALLBACK_MESSAGE *callbac
 
 #define txm_module_manager_initialize                   _txm_module_manager_initialize
 #define txm_module_manager_absolute_load                _txm_module_manager_absolute_load
+#define txm_module_manager_absolute_load_extended       _txm_module_manager_absolute_load_extended
 #define txm_module_manager_in_place_load                _txm_module_manager_in_place_load
 #define txm_module_manager_file_load                    _txm_module_manager_file_load
 #define txm_module_manager_memory_load                  _txm_module_manager_memory_load
@@ -606,6 +609,7 @@ UINT  _txm_module_manager_file_load(TXM_MODULE_INSTANCE *module_instance, CHAR *
 #endif
 UINT  _txm_module_manager_initialize(VOID *module_memory_start, ULONG module_memory_size);
 UINT  _txm_module_manager_absolute_load(TXM_MODULE_INSTANCE *module_instance, CHAR *name, VOID *module_location);
+UINT  _txm_module_manager_absolute_load_extended(TXM_MODULE_INSTANCE *module_instance, CHAR *name, VOID *module_location, VOID *module_data_location);
 UINT  _txm_module_manager_in_place_load(TXM_MODULE_INSTANCE *module_instance, CHAR *name, VOID *module_location);
 UINT  _txm_module_manager_internal_load(TXM_MODULE_INSTANCE *module_instance, CHAR *name, VOID *module_location,
                                         ULONG code_size, VOID *code_allocation_ptr, ULONG code_allocation_size);