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rtems: rtems_configuration_get_interrupt_stack_size()

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Fix rtems_configuration_get_interrupt_stack_size() for some code models.

The _ISR_Stack_size symbol has an arbitrary absolute address and may not
be representable in the code model used by the compiler.

Update #4953.
This commit is contained in:
Sebastian Huber
2023-09-14 09:09:53 +02:00
parent 206bbeb31b
commit 2111497c0f
3 changed files with 16 additions and 2 deletions
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2
cpukit/include/rtems/config.h
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@@ -438,7 +438,7 @@ const char *rtems_get_version_string( void );
* @endparblock
*/
#define rtems_configuration_get_interrupt_stack_size() \
((size_t) _ISR_Stack_size)
((size_t) _ISR_Stack_size_object)
/* Generated from spec:/rtems/config/if/get-maximum-extensions */

14
cpukit/include/rtems/score/isr.h
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@@ -98,13 +98,25 @@ extern ISR_Handler_entry _ISR_Vector_table[ CPU_INTERRUPT_NUMBER_OF_VECTORS ];
#endif
/**
* @brief Global symbol with a value equal to the configure interrupt stack size.
* @brief Provides the configured interrupt stack size through an address.
*
* The address of this global symbol is equal to the configured interrupt stack
* size. The address of this symbol has an arbitrary value an may not be
* representable in the code model used by the compiler.
*
* This global symbol is defined by the application configuration option
* CONFIGURE_INIT_TASK_STACK_SIZE via <rtems/confdefs.h>.
*/
RTEMS_DECLARE_GLOBAL_SYMBOL( _ISR_Stack_size );
/**
* @brief Provides the configured interrupt stack size through an object.
*
* This object is provided to avoid issues with the _ISR_Stack_size symbol
* address and the code model used by the compiler.
*/
extern const char * const volatile _ISR_Stack_size_object;
/**
* @brief The interrupt stack area begin.
*

2
cpukit/score/src/isr.c
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@@ -44,6 +44,8 @@
#include <rtems/score/percpu.h>
#include <rtems/config.h>
const char * const volatile _ISR_Stack_size_object = _ISR_Stack_size;
void _ISR_Handler_initialization( void )
{
uint32_t cpu_max;