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FreeRTOS: Make the default stack alignment 16 for Xtensa

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This commit is contained in:
Omar Chebib 2022-11-11 15:00:42 +08:00
parent bae4a5c30c
commit bcb8516744
6 changed files with 28 additions and 5 deletions
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6
components/freertos/FreeRTOS-Kernel-SMP/portable/riscv/port.c
View File

@ -44,6 +44,8 @@
#include "esp_gdbstub.h"
#endif // CONFIG_ESP_SYSTEM_GDBSTUB_RUNTIME
_Static_assert(portBYTE_ALIGNMENT == 16, "portBYTE_ALIGNMENT must be set to 16");
/* ---------------------------------------------------- Variables ------------------------------------------------------
*
* ------------------------------------------------------------------------------------------------------------------ */
@ -703,13 +705,17 @@ StackType_t *pxPortInitialiseStack(StackType_t *pxTopOfStack, TaskFunction_t pxC
*/
UBaseType_t uxStackPointer = (UBaseType_t)pxTopOfStack;
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Initialize GCC TLS area
uint32_t threadptr_reg_init;
uxStackPointer = uxInitialiseStackTLS(uxStackPointer, &threadptr_reg_init);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Initialize the starting interrupt stack frame
uxStackPointer = uxInitialiseStackFrame(uxStackPointer, pxCode, pvParameters, threadptr_reg_init);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Return the task's current stack pointer address which should point to the starting interrupt stack frame
return (StackType_t *)uxStackPointer;
//TODO: IDF-2393

2
components/freertos/FreeRTOS-Kernel-SMP/portable/xtensa/include/freertos/portmacro.h
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@ -72,7 +72,7 @@ typedef uint32_t TickType_t;
#define portCRITICAL_NESTING_IN_TCB 1
#define portSTACK_GROWTH ( -1 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 4
#define portBYTE_ALIGNMENT 16 // Xtensa Windowed ABI requires the stack pointer to always be 16-byte aligned. See "isa_rm.pdf 8.1.1 Windowed Register Usage and Stack Layout"
#define portNOP() XT_NOP() //Todo: Check if XT_NOP exists
/* ---------------------------------------------- Forward Declarations -------------------------------------------------

7
components/freertos/FreeRTOS-Kernel-SMP/portable/xtensa/port.c
View File

@ -50,6 +50,8 @@
#include "hal/systimer_ll.h"
#endif // CONFIG_FREERTOS_SYSTICK_USES_SYSTIMER
_Static_assert(portBYTE_ALIGNMENT == 16, "portBYTE_ALIGNMENT must be set to 16");
/*
OS state variables
*/
@ -884,18 +886,23 @@ StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
*/
UBaseType_t uxStackPointer = (UBaseType_t)pxTopOfStack;
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
#if XCHAL_CP_NUM > 0
// Initialize the coprocessor save area
uxStackPointer = uxInitialiseStackCPSA(uxStackPointer);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
#endif /* XCHAL_CP_NUM > 0 */
// Initialize the GCC TLS area
uint32_t threadptr_reg_init;
uxStackPointer = uxInitialiseStackTLS(uxStackPointer, &threadptr_reg_init);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Initialize the starting interrupt stack frame
uxStackPointer = uxInitialiseStackFrame(uxStackPointer, pxCode, pvParameters, threadptr_reg_init);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Return the task's current stack pointer address which should point to the starting interrupt stack frame
return (StackType_t *)uxStackPointer;
}

6
components/freertos/FreeRTOS-Kernel/portable/riscv/port.c
View File

@ -57,7 +57,7 @@
#include "port_systick.h"
#include "esp_memory_utils.h"
_Static_assert(portBYTE_ALIGNMENT == 16, "portBYTE_ALIGNMENT must be set to 16");
/* ---------------------------------------------------- Variables ------------------------------------------------------
*
@ -284,13 +284,17 @@ StackType_t *pxPortInitialiseStack(StackType_t *pxTopOfStack, TaskFunction_t pxC
*/
UBaseType_t uxStackPointer = (UBaseType_t)pxTopOfStack;
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Initialize GCC TLS area
uint32_t threadptr_reg_init;
uxStackPointer = uxInitialiseStackTLS(uxStackPointer, &threadptr_reg_init);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Initialize the starting interrupt stack frame
uxStackPointer = uxInitialiseStackFrame(uxStackPointer, pxCode, pvParameters, threadptr_reg_init);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Return the task's current stack pointer address which should point to the starting interrupt stack frame
return (StackType_t *)uxStackPointer;
//TODO: IDF-2393

2
components/freertos/FreeRTOS-Kernel/portable/xtensa/include/freertos/portmacro.h
View File

@ -139,7 +139,7 @@ typedef uint32_t TickType_t;
#define portCRITICAL_NESTING_IN_TCB 0
#define portSTACK_GROWTH ( -1 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 4
#define portBYTE_ALIGNMENT 16 // Xtensa Windowed ABI requires the stack pointer to always be 16-byte aligned. See "isa_rm.pdf 8.1.1 Windowed Register Usage and Stack Layout"
#define portTICK_TYPE_IS_ATOMIC 1
#define portNOP() XT_NOP()

10
components/freertos/FreeRTOS-Kernel/portable/xtensa/port.c
View File

@ -78,6 +78,8 @@
#include "esp_cpu.h"
#include "esp_memory_utils.h"
_Static_assert(portBYTE_ALIGNMENT == 16, "portBYTE_ALIGNMENT must be set to 16");
_Static_assert(tskNO_AFFINITY == CONFIG_FREERTOS_NO_AFFINITY, "incorrect tskNO_AFFINITY value");
@ -415,20 +417,24 @@ StackType_t *pxPortInitialiseStack(StackType_t *pxTopOfStack, TaskFunction_t pxC
- All stack areas are aligned to 16 byte boundary
- We use UBaseType_t for all of stack area initialization functions for more convenient pointer arithmetic
*/
UBaseType_t uxStackPointer = (UBaseType_t)pxTopOfStack;
// Make sure the incoming stack pointer is aligned on 16
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
#if XCHAL_CP_NUM > 0
// Initialize the coprocessor save area
uxStackPointer = uxInitialiseStackCPSA(uxStackPointer);
// Each allocated section on the stack must have a size aligned on 16
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
#endif /* XCHAL_CP_NUM > 0 */
// Initialize the GCC TLS area
uint32_t threadptr_reg_init;
uxStackPointer = uxInitialiseStackTLS(uxStackPointer, &threadptr_reg_init);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Initialize the starting interrupt stack frame
uxStackPointer = uxInitialiseStackFrame(uxStackPointer, pxCode, pvParameters, threadptr_reg_init);
configASSERT((uxStackPointer & portBYTE_ALIGNMENT_MASK) == 0);
// Return the task's current stack pointer address which should point to the starting interrupt stack frame
return (StackType_t *)uxStackPointer;
}