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Release 6.1.8

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This commit is contained in:
Yuxin Zhou
2021-07-28 07:24:02 +00:00
parent 244365fc6a
commit d0dab58250
651 changed files with 11636 additions and 10696 deletions
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19
ports_module/cortex_m3/iar/inc/txm_module_port.h
View File

@@ -40,7 +40,7 @@
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 04-02-2021 Scott Larson Modified comment(s) and */
/* added check for overflow, */
/* resulting in version 6.1.6 */
@@ -95,9 +95,14 @@ The following extensions must also be defined in tx_port.h:
VOID (*tx_timer_module_expiration_function)(ULONG id);
*/
/* Size of module heap. */
#define TXM_MODULE_HEAP_SIZE 512
/* Define the kernel stack size for a module thread. */
#ifndef TXM_MODULE_KERNEL_STACK_SIZE
#define TXM_MODULE_KERNEL_STACK_SIZE 512
#define TXM_MODULE_KERNEL_STACK_SIZE 768
#endif
/* Define constants specific to the tools the module can be built with for this particular modules port. */
@@ -154,9 +159,9 @@ The following extensions must also be defined in tx_port.h:
#define INLINE_DECLARE inline
/* Define the number of MPU entries assigned to the code and data sections. On Cortex-M parts, there can only be 7 total
entries, since ThreadX uses one for access to the kernel dispatch function. */
/* Define the number of MPU entries assigned to the code and data sections.
On Cortex-M3 parts, there are 8 total entries. ThreadX uses one for access
to the kernel entry function, thus 7 remain for code and data protection. */
#define TXM_MODULE_MANAGER_CODE_MPU_ENTRIES 4
#define TXM_MODULE_MANAGER_DATA_MPU_ENTRIES 3
#define TXM_MODULE_MANAGER_SHARED_MPU_INDEX 8
@@ -323,7 +328,7 @@ ULONG _txm_module_manager_calculate_srd_bits(ULONG block_size, ULONG length);
ULONG _txm_module_manager_region_size_get(ULONG block_size);
#define TXM_MODULE_MANAGER_VERSION_ID \
CHAR _txm_module_manager_version_id[] = \
"Copyright (c) Microsoft Corporation. All rights reserved. * ThreadX Module Cortex-M3/MPU/IAR Version 6.1 *";
CHAR _txm_module_manager_version_id[] = \
"Copyright (c) Microsoft Corporation. All rights reserved. * ThreadX Module Cortex-M3/MPU/IAR Version 6.1.8 *";
#endif

2
ports_module/cortex_m3/iar/module_lib/src/txm_module_thread_shell_entry.c
View File

@@ -91,7 +91,7 @@ extern VOID __iar_data_init3(VOID);
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
VOID _txm_module_thread_shell_entry(TX_THREAD *thread_ptr, TXM_MODULE_THREAD_ENTRY_INFO *thread_info)

73
ports_module/cortex_m3/iar/module_manager/src/tx_misra.s
View File

@@ -96,6 +96,12 @@
PUBLIC _tx_misra_void_to_uchar_pointer_convert
PUBLIC _tx_misra_void_to_ulong_pointer_convert
PUBLIC _tx_misra_ipsr_get
PUBLIC _tx_misra_control_get
PUBLIC _tx_misra_control_set
#ifdef __ARMVFP__
PUBLIC _tx_misra_fpccr_get
PUBLIC _tx_misra_vfp_touch
#endif
PUBLIC _tx_version_id
@@ -980,7 +986,7 @@ _tx_misra_char_to_uchar_pointer_convert:
BX LR ;; return
***********************************************************************************************/
/***********************************************************************************************/
/***********************************************************************************************/
/** */
/** ULONG _tx_misra_ipsr_get(void); */
@@ -995,6 +1001,71 @@ _tx_misra_ipsr_get:
BX LR ;; return
/***********************************************************************************************/
/***********************************************************************************************/
/** */
/** ULONG _tx_misra_control_get(void); */
/** */
/***********************************************************************************************/
/***********************************************************************************************/
SECTION `.text`:CODE:NOROOT(1)
THUMB
_tx_misra_control_get:
MRS R0, CONTROL
BX LR ;; return
/***********************************************************************************************/
/***********************************************************************************************/
/** */
/** void _tx_misra_control_set(ULONG value); */
/** */
/***********************************************************************************************/
/***********************************************************************************************/
SECTION `.text`:CODE:NOROOT(1)
THUMB
_tx_misra_control_set:
MSR CONTROL, R0
BX LR ;; return
#ifdef __ARMVFP__
/***********************************************************************************************/
/***********************************************************************************************/
/** */
/** ULONG _tx_misra_fpccr_get(void); */
/** */
/***********************************************************************************************/
/***********************************************************************************************/
SECTION `.text`:CODE:NOROOT(2)
THUMB
_tx_misra_fpccr_get:
LDR r0, =0xE000EF34 ; Build FPCCR address
LDR r0, [r0] ; Load FPCCR value
BX LR ;; return
/***********************************************************************************************/
/***********************************************************************************************/
/** */
/** void _tx_misra_vfp_touch(void); */
/** */
/***********************************************************************************************/
/***********************************************************************************************/
SECTION `.text`:CODE:NOROOT(1)
THUMB
_tx_misra_vfp_touch:
vmov.f32 s0, s0
BX LR ;; return
#endif
SECTION `.iar_vfe_header`:DATA:NOALLOC:NOROOT(2)
SECTION_TYPE SHT_PROGBITS, 0
DATA

149
ports_module/cortex_m3/iar/module_manager/src/tx_thread_context_restore.s
View File

@@ -1,89 +1,78 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Thread */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
EXTERN _tx_execution_isr_exit
;
;
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_thread_context_restore Cortex-M3/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function is only needed for legacy applications and it should */
;/* not be called in any new development on a Cortex-M. */
;/* This function restores the interrupt context if it is processing a */
;/* nested interrupt. If not, it returns to the interrupt thread if no */
;/* preemption is necessary. Otherwise, if preemption is necessary or */
;/* if no thread was running, the function returns to the scheduler. */
;/* */
;/* INPUT */
;/* */
;/* None */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* [_tx_execution_isr_exit] Execution profiling ISR exit */
;/* */
;/* CALLED BY */
;/* */
;/* ISRs Interrupt Service Routines */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 William E. Lamie Initial Version 6.1 */
;/* */
;/**************************************************************************/
;VOID _tx_thread_context_restore(VOID)
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_context_restore Cortex-Mx/IAR */
/* 6.1.8 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is only needed for legacy applications and it should */
/* not be called in any new development on a Cortex-M. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* [_tx_execution_isr_exit] Execution profiling ISR exit */
/* */
/* CALLED BY */
/* */
/* ISRs Interrupt Service Routines */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 08-02-2021 Scott Larson Initial Version 6.1.8 */
/* */
/**************************************************************************/
// VOID _tx_thread_context_restore(VOID)
// {
PUBLIC _tx_thread_context_restore
_tx_thread_context_restore:
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
;
; /* Call the ISR exit function to indicate an ISR is complete. */
;
PUSH {r0,lr} ; Save ISR lr
BL _tx_execution_isr_exit ; Call the ISR exit function
POP {r0,lr} ; Restore ISR lr
#if (defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY) || defined(TX_EXECUTION_PROFILE_ENABLE))
/* Call the ISR exit function to indicate an ISR is complete. */
PUSH {r0, lr} // Save return address
BL _tx_execution_isr_exit // Call the ISR exit function
POP {r0, lr} // Recover return address
#endif
;
POP {lr}
BX lr
;
;}
// }
END

151
ports_module/cortex_m3/iar/module_manager/src/tx_thread_context_save.s
View File

@@ -1,87 +1,80 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Thread */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
EXTERN _tx_execution_isr_enter
;
;
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_thread_context_save Cortex-M3/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function is only needed for legacy applications and it should */
;/* not be called in any new development on a Cortex-M. */
;/* This function saves the context of an executing thread in the */
;/* beginning of interrupt processing. The function also ensures that */
;/* the system stack is used upon return to the calling ISR. */
;/* */
;/* INPUT */
;/* */
;/* None */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* [_tx_execution_isr_enter] Execution profiling ISR enter */
;/* */
;/* CALLED BY */
;/* */
;/* ISRs */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 William E. Lamie Initial Version 6.1 */
;/* */
;/**************************************************************************/
;VOID _tx_thread_context_save(VOID)
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_context_save Cortex-Mx/IAR */
/* 6.1.8 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is only needed for legacy applications and it should */
/* not be called in any new development on a Cortex-M. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* [_tx_execution_isr_enter] Execution profiling ISR enter */
/* */
/* CALLED BY */
/* */
/* ISRs */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 08-02-2021 Scott Larson Initial Version 6.1.8 */
/* */
/**************************************************************************/
// VOID _tx_thread_context_save(VOID)
// {
PUBLIC _tx_thread_context_save
_tx_thread_context_save:
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
;
; /* Call the ISR enter function to indicate an ISR is starting. */
;
PUSH {r0, lr} ; Save return address
BL _tx_execution_isr_enter ; Call the ISR enter function
POP {r0, lr} ; Recover return address
#if (defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY) || defined(TX_EXECUTION_PROFILE_ENABLE))
/* Call the ISR enter function to indicate an ISR is starting. */
PUSH {r0, lr} // Save return address
BL _tx_execution_isr_enter // Call the ISR enter function
POP {r0, lr} // Recover return address
#endif
;
; /* Context is already saved - just return! */
;
/* Context is already saved - just return. */
BX lr
;}
// }
END

145
ports_module/cortex_m3/iar/module_manager/src/tx_thread_interrupt_control.s
View File

@@ -1,77 +1,78 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Thread */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_thread_interrupt_control Cortex-M3/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function is responsible for changing the interrupt lockout */
;/* posture of the system. */
;/* */
;/* INPUT */
;/* */
;/* new_posture New interrupt lockout posture */
;/* */
;/* OUTPUT */
;/* */
;/* old_posture Old interrupt lockout posture */
;/* */
;/* CALLS */
;/* */
;/* None */
;/* */
;/* CALLED BY */
;/* */
;/* Application Code */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 William E. Lamie Initial Version 6.1 */
;/* */
;/**************************************************************************/
;UINT _tx_thread_interrupt_control(UINT new_posture)
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_interrupt_control Cortex-Mx/IAR */
/* 6.1.8 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is responsible for changing the interrupt lockout */
/* posture of the system. */
/* */
/* INPUT */
/* */
/* new_posture New interrupt lockout posture */
/* */
/* OUTPUT */
/* */
/* old_posture Old interrupt lockout posture */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 08-02-2021 Scott Larson Initial Version 6.1.8 */
/* */
/**************************************************************************/
// UINT _tx_thread_interrupt_control(UINT new_posture)
// {
PUBLIC _tx_thread_interrupt_control
_tx_thread_interrupt_control:
;
; /* Pickup current interrupt lockout posture. */
;
MRS r1, PRIMASK
MSR PRIMASK, r0
MOV r0, r1
BX lr
;
;}
#ifdef TX_PORT_USE_BASEPRI
MRS r1, BASEPRI // Pickup current interrupt posture
MSR BASEPRI, r0 // Apply the new interrupt posture
MOV r0, r1 // Transfer old to return register
#else
MRS r1, PRIMASK // Pickup current interrupt lockout
MSR PRIMASK, r0 // Apply the new interrupt lockout
MOV r0, r1 // Transfer old to return register
#endif
BX lr // Return to caller
// }
END

138
ports_module/cortex_m3/iar/module_manager/src/tx_thread_interrupt_disable.s
View File

@@ -1,76 +1,78 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Thread */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_thread_interrupt_restore Cortex-M3/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function is responsible for disabling interrupts and returning */
;/* the previous interrupt lockout posture. */
;/* */
;/* INPUT */
;/* */
;/* old_posture Old interrupt lockout posture */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* None */
;/* */
;/* CALLED BY */
;/* */
;/* Application Code */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 William E. Lamie Initial Version 6.1 */
;/* */
;/**************************************************************************/
;UINT _tx_thread_interrupt_disable(UINT new_posture)
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_interrupt_disable Cortex-Mx/IAR */
/* 6.1.8 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is responsible for disabling interrupts and returning */
/* the previous interrupt lockout posture. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* old_posture Old interrupt lockout posture */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 08-02-2021 Scott Larson Initial Version 6.1.8 */
/* */
/**************************************************************************/
// UINT _tx_thread_interrupt_disable(VOID)
// {
PUBLIC _tx_thread_interrupt_disable
_tx_thread_interrupt_disable:
;
; /* Return current interrupt lockout posture. */
;
/* Return current interrupt lockout posture. */
#ifdef TX_PORT_USE_BASEPRI
MRS r0, BASEPRI
LDR r1, =TX_PORT_BASEPRI
MSR BASEPRI, r1
#else
MRS r0, PRIMASK
CPSID i
#endif
BX lr
;
;}
// }
END

136
ports_module/cortex_m3/iar/module_manager/src/tx_thread_interrupt_restore.s
View File

@@ -1,75 +1,75 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Thread */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_thread_interrupt_restore Cortex-M3/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function is responsible for restoring the previous */
;/* interrupt lockout posture. */
;/* */
;/* INPUT */
;/* */
;/* None */
;/* */
;/* OUTPUT */
;/* */
;/* previous_posture Previous interrupt posture */
;/* */
;/* CALLS */
;/* */
;/* None */
;/* */
;/* CALLED BY */
;/* */
;/* Application Code */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 William E. Lamie Initial Version 6.1 */
;/* */
;/**************************************************************************/
;VOID _tx_thread_interrupt_restore(UINT new_posture)
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_interrupt_restore Cortex-Mx/IAR */
/* 6.1.8 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is responsible for restoring the previous */
/* interrupt lockout posture. */
/* */
/* INPUT */
/* */
/* previous_posture Previous interrupt posture */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 08-02-2021 Scott Larson Initial Version 6.1.8 */
/* */
/**************************************************************************/
// VOID _tx_thread_interrupt_restore(UINT previous_posture)
// {
PUBLIC _tx_thread_interrupt_restore
_tx_thread_interrupt_restore:
;
; /* Restore previous interrupt lockout posture. */
;
/* Restore previous interrupt lockout posture. */
#ifdef TX_PORT_USE_BASEPRI
MSR BASEPRI, r0
#else
MSR PRIMASK, r0
#endif
BX lr
;
;}
// }
END

865
ports_module/cortex_m3/iar/module_manager/src/tx_thread_schedule.s
View File

@@ -1,521 +1,524 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Thread */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
EXTERN _tx_thread_current_ptr
EXTERN _tx_thread_execute_ptr
EXTERN _tx_timer_time_slice
EXTERN _tx_thread_system_stack_ptr
EXTERN _tx_execution_thread_enter
EXTERN _tx_execution_thread_exit
EXTERN _tx_thread_preempt_disable
EXTERN _txm_module_manager_memory_fault_handler
EXTERN _txm_module_manager_memory_fault_info
;
;
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_thread_schedule Cortex-M3/MPU/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* Scott Larson, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function waits for a thread control block pointer to appear in */
;/* the _tx_thread_execute_ptr variable. Once a thread pointer appears */
;/* in the variable, the corresponding thread is resumed. */
;/* */
;/* INPUT */
;/* */
;/* None */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* None */
;/* */
;/* CALLED BY */
;/* */
;/* _tx_initialize_kernel_enter ThreadX entry function */
;/* _tx_thread_system_return Return to system from thread */
;/* _tx_thread_context_restore Restore thread's context */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 Scott Larson Initial Version 6.1 */
;/* */
;/**************************************************************************/
;VOID _tx_thread_schedule(VOID)
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_schedule Cortex-M3/MPU/IAR */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function waits for a thread control block pointer to appear in */
/* the _tx_thread_execute_ptr variable. Once a thread pointer appears */
/* in the variable, the corresponding thread is resumed. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _tx_initialize_kernel_enter ThreadX entry function */
/* _tx_thread_system_return Return to system from thread */
/* _tx_thread_context_restore Restore thread's context */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
// VOID _tx_thread_schedule(VOID)
// {
PUBLIC _tx_thread_schedule
_tx_thread_schedule:
;
; /* This function should only ever be called on Cortex-M
; from the first schedule request. Subsequent scheduling occurs
; from the PendSV handling routines below. */
;
; /* Clear the preempt-disable flag to enable rescheduling after initialization on Cortex-M targets. */
;
MOV r0, #0 ; Build value for TX_FALSE
LDR r2, =_tx_thread_preempt_disable ; Build address of preempt disable flag
STR r0, [r2, #0] ; Clear preempt disable flag
;
; /* Enable memory fault registers. */
;
LDR r0, =0xE000ED24 ; Build SHCSR address
LDR r1, =0x70000 ; Enable Usage, Bus, and MemManage faults
STR r1, [r0] ;
;
; /* Enable interrupts */
;
CPSIE i
;
; /* Enter the scheduler for the first time. */
;
MOV r0, #0x10000000 ; Load PENDSVSET bit
MOV r1, #0xE000E000 ; Load NVIC base
STR r0, [r1, #0xD04] ; Set PENDSVBIT in ICSR
DSB ; Complete all memory accesses
ISB ; Flush pipeline
; /* Wait here for the PendSV to take place. */
/* This function should only ever be called on Cortex-M
from the first schedule request. Subsequent scheduling occurs
from the PendSV handling routine below. */
/* Clear the preempt-disable flag to enable rescheduling after initialization on Cortex-M targets. */
MOV r0, #0 // Build value for TX_FALSE
LDR r2, =_tx_thread_preempt_disable // Build address of preempt disable flag
STR r0, [r2, #0] // Clear preempt disable flag
/* Enable memory fault registers. */
LDR r0, =0xE000ED24 // Build SHCSR address
LDR r1, =0x70000 // Enable Usage, Bus, and MemManage faults
STR r1, [r0] //
/* Enable interrupts */
CPSIE i
/* Enter the scheduler for the first time. */
MOV r0, #0x10000000 // Load PENDSVSET bit
MOV r1, #0xE000E000 // Load NVIC base
STR r0, [r1, #0xD04] // Set PENDSVBIT in ICSR
DSB // Complete all memory accesses
ISB // Flush pipeline
/* Wait here for the PendSV to take place. */
__tx_wait_here:
B __tx_wait_here ; Wait for the PendSV to happen
;}
;
B __tx_wait_here // Wait for the PendSV to happen
// }
/* Memory Exception Handler. */
;
; /* Memory Exception Handler. */
;
PUBLIC MemManage_Handler
PUBLIC BusFault_Handler
PUBLIC UsageFault_Handler
MemManage_Handler:
BusFault_Handler:
UsageFault_Handler:
;{
CPSID i ; Disable interrupts
;
; /* Now pickup and store all the fault related information. */
;
LDR r12,=_txm_module_manager_memory_fault_info ; Pickup fault info struct
LDR r0, =_tx_thread_current_ptr ; Build current thread pointer address
LDR r1, [r0] ; Pickup the current thread pointer
STR r1, [r12, #0] ; Save current thread pointer in fault info structure
LDR r0, =0xE000ED24 ; Build SHCSR address
LDR r1, [r0] ; Pickup SHCSR
STR r1, [r12, #8] ; Save SHCSR
LDR r0, =0xE000ED28 ; Build CFSR address
LDR r1, [r0] ; Pickup CFSR
STR r1, [r12, #12] ; Save CFSR
LDR r0, =0xE000ED34 ; Build MMFAR address
LDR r1, [r0] ; Pickup MMFAR
STR r1, [r12, #16] ; Save MMFAR
LDR r0, =0xE000ED38 ; Build BFAR address
LDR r1, [r0] ; Pickup BFAR
STR r1, [r12, #20] ; Save BFAR
MRS r0, CONTROL ; Pickup current CONTROL register
STR r0, [r12, #24] ; Save CONTROL
MRS r1, PSP ; Pickup thread stack pointer
STR r1, [r12, #28] ; Save thread stack pointer
LDR r0, [r1] ; Pickup saved r0
STR r0, [r12, #32] ; Save r0
LDR r0, [r1, #4] ; Pickup saved r1
STR r0, [r12, #36] ; Save r1
STR r2, [r12, #40] ; Save r2
STR r3, [r12, #44] ; Save r3
STR r4, [r12, #48] ; Save r4
STR r5, [r12, #52] ; Save r5
STR r6, [r12, #56] ; Save r6
STR r7, [r12, #60] ; Save r7
STR r8, [r12, #64] ; Save r8
STR r9, [r12, #68] ; Save r9
STR r10,[r12, #72] ; Save r10
STR r11,[r12, #76] ; Save r11
LDR r0, [r1, #16] ; Pickup saved r12
STR r0, [r12, #80] ; Save r12
LDR r0, [r1, #20] ; Pickup saved lr
STR r0, [r12, #84] ; Save lr
LDR r0, [r1, #24] ; Pickup instruction address at point of fault
STR r0, [r12, #4] ; Save point of fault
LDR r0, [r1, #28] ; Pickup xPSR
STR r0, [r12, #88] ; Save xPSR
MRS r0, CONTROL ; Pickup current CONTROL register
BIC r0, r0, #1 ; Clear the UNPRIV bit
MSR CONTROL, r0 ; Setup new CONTROL register
CPSID i // Disable interrupts
LDR r0, =0xE000ED28 ; Build the Memory Management Fault Status Register (MMFSR)
LDRB r1, [r0] ; Pickup the MMFSR, with the following bit definitions:
; Bit 0 = 1 -> Instruction address violation
; Bit 1 = 1 -> Load/store address violation
; Bit 7 = 1 -> MMFAR is valid
STRB r1, [r0] ; Clear the MMFSR
/* Now pickup and store all the fault related information. */
BL _txm_module_manager_memory_fault_handler ; Call memory manager fault handler
LDR r12,=_txm_module_manager_memory_fault_info // Pickup fault info struct
LDR r0, =_tx_thread_current_ptr // Build current thread pointer address
LDR r1, [r0] // Pickup the current thread pointer
STR r1, [r12, #0] // Save current thread pointer in fault info structure
LDR r0, =0xE000ED24 // Build SHCSR address
LDR r1, [r0] // Pickup SHCSR
STR r1, [r12, #8] // Save SHCSR
LDR r0, =0xE000ED28 // Build CFSR address
LDR r1, [r0] // Pickup CFSR
STR r1, [r12, #12] // Save CFSR
LDR r0, =0xE000ED34 // Build MMFAR address
LDR r1, [r0] // Pickup MMFAR
STR r1, [r12, #16] // Save MMFAR
LDR r0, =0xE000ED38 // Build BFAR address
LDR r1, [r0] // Pickup BFAR
STR r1, [r12, #20] // Save BFAR
MRS r0, CONTROL // Pickup current CONTROL register
STR r0, [r12, #24] // Save CONTROL
MRS r1, PSP // Pickup thread stack pointer
STR r1, [r12, #28] // Save thread stack pointer
LDR r0, [r1] // Pickup saved r0
STR r0, [r12, #32] // Save r0
LDR r0, [r1, #4] // Pickup saved r1
STR r0, [r12, #36] // Save r1
STR r2, [r12, #40] // Save r2
STR r3, [r12, #44] // Save r3
STR r4, [r12, #48] // Save r4
STR r5, [r12, #52] // Save r5
STR r6, [r12, #56] // Save r6
STR r7, [r12, #60] // Save r7
STR r8, [r12, #64] // Save r8
STR r9, [r12, #68] // Save r9
STR r10,[r12, #72] // Save r10
STR r11,[r12, #76] // Save r11
LDR r0, [r1, #16] // Pickup saved r12
STR r0, [r12, #80] // Save r12
LDR r0, [r1, #20] // Pickup saved lr
STR r0, [r12, #84] // Save lr
LDR r0, [r1, #24] // Pickup instruction address at point of fault
STR r0, [r12, #4] // Save point of fault
LDR r0, [r1, #28] // Pickup xPSR
STR r0, [r12, #88] // Save xPSR
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
;
; /* Call the thread exit function to indicate the thread is no longer executing. */
;
CPSID i ; Disable interrupts
BL _tx_execution_thread_exit ; Call the thread exit function
CPSIE i ; Enable interrupts
MRS r0, CONTROL // Pickup current CONTROL register
BIC r0, r0, #1 // Clear the UNPRIV bit
MSR CONTROL, r0 // Setup new CONTROL register
LDR r0, =0xE000ED28 // Build the Memory Management Fault Status Register (MMFSR)
LDRB r1, [r0] // Pickup the MMFSR, with the following bit definitions:
// Bit 0 = 1 -> Instruction address violation
// Bit 1 = 1 -> Load/store address violation
// Bit 7 = 1 -> MMFAR is valid
STRB r1, [r0] // Clear the MMFSR
BL _txm_module_manager_memory_fault_handler // Call memory manager fault handler
#if (defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY) || defined(TX_EXECUTION_PROFILE_ENABLE))
/* Call the thread exit function to indicate the thread is no longer executing. */
CPSID i // Disable interrupts
BL _tx_execution_thread_exit // Call the thread exit function
CPSIE i // Enable interrupts
#endif
MOV r1, #0 ; Build NULL value
LDR r0, =_tx_thread_current_ptr ; Pickup address of current thread pointer
STR r1, [r0] ; Clear current thread pointer
MOV r1, #0 // Build NULL value
LDR r0, =_tx_thread_current_ptr // Pickup address of current thread pointer
STR r1, [r0] // Clear current thread pointer
; Return from MemManage_Handler exception
LDR r0, =0xE000ED04 ; Load ICSR
LDR r1, =0x10000000 ; Set PENDSVSET bit
STR r1, [r0] ; Store ICSR
DSB ; Wait for memory access to complete
CPSIE i ; Enable interrupts
MOV lr, #0xFFFFFFFD ; Load exception return code
BX lr ; Return from exception
;}
// Return from MemManage_Handler exception
LDR r0, =0xE000ED04 // Load ICSR
LDR r1, =0x10000000 // Set PENDSVSET bit
STR r1, [r0] // Store ICSR
DSB // Wait for memory access to complete
CPSIE i // Enable interrupts
MOV lr, #0xFFFFFFFD // Load exception return code
BX lr // Return from exception
/* Generic context PendSV handler. */
;
; /* Generic context PendSV handler. */
;
PUBLIC PendSV_Handler
PUBLIC __tx_PendSVHandler
PendSV_Handler:
__tx_PendSVHandler:
;
; /* Get current thread value and new thread pointer. */
;
/* Get current thread value and new thread pointer. */
__tx_ts_handler:
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
;
; /* Call the thread exit function to indicate the thread is no longer executing. */
;
CPSID i ; Disable interrupts
PUSH {r0, lr} ; Save LR (and r0 just for alignment)
BL _tx_execution_thread_exit ; Call the thread exit function
POP {r0, lr} ; Recover LR
CPSIE i ; Enable interrupts
#if (defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY) || defined(TX_EXECUTION_PROFILE_ENABLE))
/* Call the thread exit function to indicate the thread is no longer executing. */
CPSID i // Disable interrupts
PUSH {r0, lr} // Save LR (and r0 just for alignment)
BL _tx_execution_thread_exit // Call the thread exit function
POP {r0, lr} // Recover LR
CPSIE i // Enable interrupts
#endif
MOV32 r0, _tx_thread_current_ptr ; Build current thread pointer address
MOV32 r2, _tx_thread_execute_ptr ; Build execute thread pointer address
MOV r3, #0 ; Build NULL value
LDR r1, [r0] ; Pickup current thread pointer
;
; /* Determine if there is a current thread to finish preserving. */
;
CBZ r1, __tx_ts_new ; If NULL, skip preservation
;
; /* Recover PSP and preserve current thread context. */
;
STR r3, [r0] ; Set _tx_thread_current_ptr to NULL
MRS r12, PSP ; Pickup PSP pointer (thread's stack pointer)
STMDB r12!, {r4-r11} ; Save its remaining registers
MOV32 r4, _tx_timer_time_slice ; Build address of time-slice variable
STMDB r12!, {LR} ; Save LR on the stack
;
; /* Determine if time-slice is active. If it isn't, skip time handling processing. */
;
LDR r5, [r4] ; Pickup current time-slice
STR r12, [r1, #8] ; Save the thread stack pointer
CBZ r5, __tx_ts_new ; If not active, skip processing
;
; /* Time-slice is active, save the current thread's time-slice and clear the global time-slice variable. */
;
STR r5, [r1, #24] ; Save current time-slice
;
; /* Clear the global time-slice. */
;
STR r3, [r4] ; Clear time-slice
;
;
; /* Executing thread is now completely preserved!!! */
;
LDR r0, =_tx_thread_current_ptr // Build current thread pointer address
LDR r2, =_tx_thread_execute_ptr // Build execute thread pointer address
MOV r3, #0 // Build NULL value
LDR r1, [r0] // Pickup current thread pointer
/* Determine if there is a current thread to finish preserving. */
CBZ r1, __tx_ts_new // If NULL, skip preservation
/* Recover PSP and preserve current thread context. */
STR r3, [r0] // Set _tx_thread_current_ptr to NULL
MRS r12, PSP // Pickup PSP pointer (thread's stack pointer)
STMDB r12!, {r4-r11} // Save its remaining registers
LDR r4, =_tx_timer_time_slice // Build address of time-slice variable
STMDB r12!, {LR} // Save LR on the stack
/* Determine if time-slice is active. If it isn't, skip time handling processing. */
LDR r5, [r4] // Pickup current time-slice
STR r12, [r1, #8] // Save the thread stack pointer
CBZ r5, __tx_ts_new // If not active, skip processing
/* Time-slice is active, save the current thread's time-slice and clear the global time-slice variable. */
STR r5, [r1, #24] // Save current time-slice
/* Clear the global time-slice. */
STR r3, [r4] // Clear time-slice
/* Executing thread is now completely preserved!!! */
__tx_ts_new:
;
; /* Now we are looking for a new thread to execute! */
;
CPSID i ; Disable interrupts
LDR r1, [r2] ; Is there another thread ready to execute?
CBZ r1, __tx_ts_wait ; No, skip to the wait processing
;
; /* Yes, another thread is ready for else, make the current thread the new thread. */
;
STR r1, [r0] ; Setup the current thread pointer to the new thread
CPSIE i ; Enable interrupts
;
; /* Increment the thread run count. */
;
/* Now we are looking for a new thread to execute! */
CPSID i // Disable interrupts
LDR r1, [r2] // Is there another thread ready to execute?
CBZ r1, __tx_ts_wait // No, skip to the wait processing
/* Yes, another thread is ready for else, make the current thread the new thread. */
STR r1, [r0] // Setup the current thread pointer to the new thread
CPSIE i // Enable interrupts
/* Increment the thread run count. */
__tx_ts_restore:
LDR r7, [r1, #4] ; Pickup the current thread run count
MOV32 r4, _tx_timer_time_slice ; Build address of time-slice variable
LDR r5, [r1, #24] ; Pickup thread's current time-slice
ADD r7, r7, #1 ; Increment the thread run count
STR r7, [r1, #4] ; Store the new run count
;
; /* Setup global time-slice with thread's current time-slice. */
;
STR r5, [r4] ; Setup global time-slice
LDR r7, [r1, #4] // Pickup the current thread run count
LDR r4, =_tx_timer_time_slice // Build address of time-slice variable
LDR r5, [r1, #24] // Pickup thread's current time-slice
ADD r7, r7, #1 // Increment the thread run count
STR r7, [r1, #4] // Store the new run count
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
;
; /* Call the thread entry function to indicate the thread is executing. */
;
PUSH {r0, r1} ; Save r0 and r1
BL _tx_execution_thread_enter ; Call the thread execution enter function
POP {r0, r1} ; Recover r0 and r1
/* Setup global time-slice with thread's current time-slice. */
STR r5, [r4] // Setup global time-slice
#if (defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY) || defined(TX_EXECUTION_PROFILE_ENABLE))
/* Call the thread entry function to indicate the thread is executing. */
PUSH {r0, r1} // Save r0 and r1
BL _tx_execution_thread_enter // Call the thread execution enter function
POP {r0, r1} // Recover r0 and r1
#endif
;
; /* Restore the thread context and PSP. */
;
LDR r12, [r1, #8] ; Pickup thread's stack pointer
MRS r5, CONTROL ; Pickup current CONTROL register
LDR r4, [r1, #0x98] ; Pickup current user mode flag
BIC r5, r5, #1 ; Clear the UNPRIV bit
ORR r4, r4, r5 ; Build new CONTROL register
MSR CONTROL, r4 ; Setup new CONTROL register
/* Restore the thread context and PSP. */
LDR r0, =0xE000ED94 ; Build MPU control reg address
MOV r3, #0 ; Build disable value
STR r3, [r0] ; Disable MPU
LDR r0, [r1, #0x90] ; Pickup the module instance pointer
CBZ r0, skip_mpu_setup ; Is this thread owned by a module? No, skip MPU setup
LDR r1, [r0, #0x64] ; Pickup MPU register[0]
CBZ r1, skip_mpu_setup ; Is protection required for this module? No, skip MPU setup
LDR r1, =0xE000ED9C ; Build address of MPU base register
LDR r12, [r1, #8] // Pickup thread's stack pointer
; Use alias registers to quickly load MPU
ADD r0, r0, #100 ; Build address of MPU register start in thread control block
LDM r0!,{r2-r9} ; Load first four MPU regions
STM r1,{r2-r9} ; Store first four MPU regions
LDM r0,{r2-r9} ; Load second four MPU regions
STM r1,{r2-r9} ; Store second four MPU regions
LDR r0, =0xE000ED94 ; Build MPU control reg address
MOV r1, #5 ; Build enable value with background region enabled
STR r1, [r0] ; Enable MPU
MRS r5, CONTROL // Pickup current CONTROL register
LDR r4, [r1, #0x98] // Pickup current user mode flag
BIC r5, r5, #1 // Clear the UNPRIV bit
ORR r4, r4, r5 // Build new CONTROL register
MSR CONTROL, r4 // Setup new CONTROL register
LDR r0, =0xE000ED94 // Build MPU control reg address
MOV r3, #0 // Build disable value
STR r3, [r0] // Disable MPU
LDR r0, [r1, #0x90] // Pickup the module instance pointer
CBZ r0, skip_mpu_setup // Is this thread owned by a module? No, skip MPU setup
LDR r1, [r0, #0x64] // Pickup MPU register[0]
CBZ r1, skip_mpu_setup // Is protection required for this module? No, skip MPU setup
LDR r1, =0xE000ED9C // Build address of MPU base register
// Use alias registers to quickly load MPU
ADD r0, r0, #100 // Build address of MPU register start in thread control block
LDM r0!,{r2-r9} // Load first four MPU regions
STM r1,{r2-r9} // Store first four MPU regions
LDM r0,{r2-r9} // Load second four MPU regions
STM r1,{r2-r9} // Store second four MPU regions
LDR r0, =0xE000ED94 // Build MPU control reg address
MOV r1, #5 // Build enable value with background region enabled
STR r1, [r0] // Enable MPU
skip_mpu_setup:
LDMIA r12!, {LR} ; Pickup LR
LDMIA r12!, {r4-r11} ; Recover thread's registers
MSR PSP, r12 ; Setup the thread's stack pointer
;
; /* Return to thread. */
;
BX lr ; Return to thread!
;
; /* The following is the idle wait processing... in this case, no threads are ready for execution and the
; system will simply be idle until an interrupt occurs that makes a thread ready. Note that interrupts
; are disabled to allow use of WFI for waiting for a thread to arrive. */
;
__tx_ts_wait:
CPSID i ; Disable interrupts
LDR r1, [r2] ; Pickup the next thread to execute pointer
STR r1, [r0] ; Store it in the current pointer
CBNZ r1, __tx_ts_ready ; If non-NULL, a new thread is ready!
#ifdef TX_ENABLE_WFI
DSB ; Ensure no outstanding memory transactions
WFI ; Wait for interrupt
ISB ; Ensure pipeline is flushed
#endif
CPSIE i ; Enable interrupts
B __tx_ts_wait ; Loop to continue waiting
;
; /* At this point, we have a new thread ready to go. Clear any newly pended PendSV - since we are
; already in the handler! */
;
__tx_ts_ready:
MOV r7, #0x08000000 ; Build clear PendSV value
MOV r8, #0xE000E000 ; Build base NVIC address
STR r7, [r8, #0xD04] ; Clear any PendSV
;
; /* Re-enable interrupts and restore new thread. */
;
CPSIE i ; Enable interrupts
B __tx_ts_restore ; Restore the thread
;}
LDMIA r12!, {LR} // Pickup LR
LDMIA r12!, {r4-r11} // Recover thread's registers
MSR PSP, r12 // Setup the thread's stack pointer
/* Return to thread. */
BX lr // Return to thread!
/* The following is the idle wait processing... in this case, no threads are ready for execution and the
system will simply be idle until an interrupt occurs that makes a thread ready. Note that interrupts
are disabled to allow use of WFI for waiting for a thread to arrive. */
__tx_ts_wait:
CPSID i // Disable interrupts
LDR r1, [r2] // Pickup the next thread to execute pointer
STR r1, [r0] // Store it in the current pointer
CBNZ r1, __tx_ts_ready // If non-NULL, a new thread is ready!
#ifdef TX_LOW_POWER
PUSH {r0-r3}
BL tx_low_power_enter // Possibly enter low power mode
POP {r0-r3}
#endif
#ifdef TX_ENABLE_WFI
DSB // Ensure no outstanding memory transactions
WFI // Wait for interrupt
ISB // Ensure pipeline is flushed
#endif
#ifdef TX_LOW_POWER
PUSH {r0-r3}
BL tx_low_power_exit // Exit low power mode
POP {r0-r3}
#endif
CPSIE i // Enable interrupts
B __tx_ts_wait // Loop to continue waiting
/* At this point, we have a new thread ready to go. Clear any newly pended PendSV - since we are
already in the handler! */
__tx_ts_ready:
MOV r7, #0x08000000 // Build clear PendSV value
MOV r8, #0xE000E000 // Build base NVIC address
STR r7, [r8, #0xD04] // Clear any PendSV
/* Re-enable interrupts and restore new thread. */
CPSIE i // Enable interrupts
B __tx_ts_restore // Restore the thread
// }
/* SVC Handler. */
;
; /* SVC Handler. */
;
PUBLIC SVC_Handler
PUBLIC __tx_SVCallHandler
SVC_Handler:
__tx_SVCallHandler:
;{
MRS r0, PSP ; Pickup the PSP stack
LDR r1, [r0, #24] ; Pickup the point of interrupt
LDRB r2, [r1, #-2] ; Pickup the SVC parameter
;
; Determine which SVC trap we are processing
;
CMP r2, #1 ; Is it the entry into ThreadX?
BNE _tx_thread_user_return ; No, return to user mode
;
; At this point we have an SVC 1, which means we are entering the kernel from a module thread with user mode selected
;
LDR r2, =_txm_module_priv-1 ; Subtract 1 because of THUMB mode.
CMP r1, r2 ; Did we come from user_mode_entry?
IT NE ; If no (not equal), then...
BXNE lr ; return from where we came.
LDR r3, [r0, #20] ; This is the saved LR
LDR r1, =_tx_thread_current_ptr ; Build current thread pointer address
LDR r2, [r1] ; Pickup current thread pointer
MOV r1, #0 ; Build clear value
STR r1, [r2, #0x98] ; Clear the current user mode selection for thread
STR r3, [r2, #0xA0] ; Save the original LR in thread control block
MRS r0, PSP // Pickup the PSP stack
LDR r1, [r0, #24] // Pickup the point of interrupt
LDRB r2, [r1, #-2] // Pickup the SVC parameter
; If there is memory protection, use kernel stack
LDR r0, [r2, #0x90] ; Load the module instance ptr
LDR r0, [r0, #0x0C] ; Load the module property flags
TST r0, #2 ; Check if memory protected
/* Determine which SVC trap we are processing */
CMP r2, #1 // Is it the entry into ThreadX?
BNE _tx_thread_user_return // No, return to user mode
/* At this point we have an SVC 1, which means we are entering
the kernel from a module thread with user mode selected. */
LDR r2, =_txm_module_priv-1 // Load address of where we should have come from
// Subtract 1 because of THUMB mode.
CMP r1, r2 // Did we come from user_mode_entry?
IT NE // If no (not equal), then...
BXNE lr // return from where we came.
LDR r3, [r0, #20] // This is the saved LR
LDR r1, =_tx_thread_current_ptr // Build current thread pointer address
LDR r2, [r1] // Pickup current thread pointer
MOV r1, #0 // Build clear value
STR r1, [r2, #0x98] // Clear the current user mode selection for thread
STR r3, [r2, #0xA0] // Save the original LR in thread control block
/* If there is memory protection, use kernel stack */
LDR r0, [r2, #0x90] // Load the module instance ptr
LDR r0, [r0, #0x0C] // Load the module property flags
TST r0, #2 // Check if memory protected
BEQ _tx_skip_kernel_stack_enter
; Switch to the module thread's kernel stack
LDR r0, [r2, #0xA8] ; Load the module kernel stack end
/* Switch to the module thread's kernel stack */
LDR r0, [r2, #0xA8] // Load the module kernel stack end
#ifndef TXM_MODULE_KERNEL_STACK_MAINTENANCE_DISABLE
LDR r1, [r2, #0xA4] ; Load the module kernel stack start
LDR r3, [r2, #0xAC] ; Load the module kernel stack size
STR r1, [r2, #12] ; Set stack start
STR r0, [r2, #16] ; Set stack end
STR r3, [r2, #20] ; Set stack size
LDR r1, [r2, #0xA4] // Load the module kernel stack start
LDR r3, [r2, #0xAC] // Load the module kernel stack size
STR r1, [r2, #12] // Set stack start
STR r0, [r2, #16] // Set stack end
STR r3, [r2, #20] // Set stack size
#endif
MRS r3, PSP ; Pickup thread stack pointer
STR r3, [r2, #0xB0] ; Save thread stack pointer
MRS r3, PSP // Pickup thread stack pointer
STR r3, [r2, #0xB0] // Save thread stack pointer
; Build kernel stack by copying thread stack two registers at a time
ADD r3, r3, #32 ; start at bottom of hardware stack
LDMDB r3!,{r1-r2}
STMDB r0!,{r1-r2}
LDMDB r3!,{r1-r2}
STMDB r0!,{r1-r2}
LDMDB r3!,{r1-r2}
STMDB r0!,{r1-r2}
LDMDB r3!,{r1-r2}
STMDB r0!,{r1-r2}
/* Build kernel stack by copying thread stack two registers at a time */
ADD r3, r3, #32 // Start at bottom of hardware stack
LDMDB r3!, {r1-r2}
STMDB r0!, {r1-r2}
LDMDB r3!, {r1-r2}
STMDB r0!, {r1-r2}
LDMDB r3!, {r1-r2}
STMDB r0!, {r1-r2}
LDMDB r3!, {r1-r2}
STMDB r0!, {r1-r2}
MSR PSP, r0 ; Set kernel stack pointer
MSR PSP, r0 // Set kernel stack pointer
_tx_skip_kernel_stack_enter:
MRS r0, CONTROL ; Pickup current CONTROL register
BIC r0, r0, #1 ; Clear the UNPRIV bit
MSR CONTROL, r0 ; Setup new CONTROL register
BX lr ; Return to thread
MRS r0, CONTROL // Pickup current CONTROL register
BIC r0, r0, #1 // Clear the UNPRIV bit
MSR CONTROL, r0 // Setup new CONTROL register
BX lr // Return to thread
_tx_thread_user_return:
LDR r2, =_txm_module_user_mode_exit-1 ; Subtract 1 because of THUMB mode.
CMP r1, r2 ; Did we come from user_mode_exit?
IT NE ; If no (not equal), then...
BXNE lr ; return from where we came
LDR r2, =_txm_module_user_mode_exit-1 // Load address of where we should have come from
// Subtract 1 because of THUMB mode.
CMP r1, r2 // Did we come from user_mode_exit?
IT NE // If no (not equal), then...
BXNE lr // return from where we came
LDR r1, =_tx_thread_current_ptr ; Build current thread pointer address
LDR r2, [r1] ; Pickup current thread pointer
LDR r1, [r2, #0x9C] ; Pick up user mode
STR r1, [r2, #0x98] ; Set the current user mode selection for thread
LDR r1, =_tx_thread_current_ptr // Build current thread pointer address
LDR r2, [r1] // Pickup current thread pointer
LDR r1, [r2, #0x9C] // Pick up user mode
STR r1, [r2, #0x98] // Set the current user mode selection for thread
; If there is memory protection, use kernel stack
LDR r0, [r2, #0x90] ; Load the module instance ptr
LDR r0, [r0, #0x0C] ; Load the module property flags
TST r0, #2 ; Check if memory protected
/* If there is memory protection, use kernel stack */
LDR r0, [r2, #0x90] // Load the module instance ptr
LDR r0, [r0, #0x0C] // Load the module property flags
TST r0, #2 // Check if memory protected
BEQ _tx_skip_kernel_stack_exit
#ifndef TXM_MODULE_KERNEL_STACK_MAINTENANCE_DISABLE
LDR r0, [r2, #0xB4] ; Load the module thread stack start
LDR r1, [r2, #0xB8] ; Load the module thread stack end
LDR r3, [r2, #0xBC] ; Load the module thread stack size
STR r0, [r2, #12] ; Set stack start
STR r1, [r2, #16] ; Set stack end
STR r3, [r2, #20] ; Set stack size
LDR r0, [r2, #0xB4] // Load the module thread stack start
LDR r1, [r2, #0xB8] // Load the module thread stack end
LDR r3, [r2, #0xBC] // Load the module thread stack size
STR r0, [r2, #12] // Set stack start
STR r1, [r2, #16] // Set stack end
STR r3, [r2, #20] // Set stack size
#endif
LDR r0, [r2, #0xB0] ; Load the module thread stack pointer
MRS r3, PSP ; Pickup kernel stack pointer
LDR r0, [r2, #0xB0] // Load the module thread stack pointer
MRS r3, PSP // Pickup kernel stack pointer
; Copy kernel hardware stack to module thread stack.
LDM r3!,{r1-r2}
STM r0!,{r1-r2}
LDM r3!,{r1-r2}
STM r0!,{r1-r2}
LDM r3!,{r1-r2}
STM r0!,{r1-r2}
LDM r3!,{r1-r2}
STM r0!,{r1-r2}
SUB r0, r0, #32 ; Subtract 32 to get back to top of stack
MSR PSP, r0 ; Set thread stack pointer
/* Copy kernel hardware stack to module thread stack. */
LDM r3!, {r1-r2}
STM r0!, {r1-r2}
LDM r3!, {r1-r2}
STM r0!, {r1-r2}
LDM r3!, {r1-r2}
STM r0!, {r1-r2}
LDM r3!, {r1-r2}
STM r0!, {r1-r2}
SUB r0, r0, #32 // Subtract 32 to get back to top of stack
MSR PSP, r0 // Set thread stack pointer
LDR r1, =_tx_thread_current_ptr ; Build current thread pointer address
LDR r2, [r1] ; Pickup current thread pointer
LDR r1, [r2, #0x9C] ; Pick up user mode
LDR r1, =_tx_thread_current_ptr // Build current thread pointer address
LDR r2, [r1] // Pickup current thread pointer
LDR r1, [r2, #0x9C] // Pick up user mode
_tx_skip_kernel_stack_exit:
MRS r0, CONTROL ; Pickup current CONTROL register
ORR r0, r0, r1 ; OR in the user mode bit
MSR CONTROL, r0 ; Setup new CONTROL register
BX lr ; Return to thread
;}
MRS r0, CONTROL // Pickup current CONTROL register
ORR r0, r0, r1 // OR in the user mode bit
MSR CONTROL, r0 // Setup new CONTROL register
BX lr // Return to thread
/* Kernel entry function from user mode. */
;
; /* Kernel entry function from user mode. */
;
EXTERN _txm_module_manager_kernel_dispatch
;
SECTION `.text`:CODE:NOROOT(5)
THUMB
ALIGNROM 5
;VOID _txm_module_manager_user_mode_entry(VOID)
;{
// VOID _txm_module_manager_user_mode_entry(VOID)
// {
PUBLIC _txm_module_manager_user_mode_entry
_txm_module_manager_user_mode_entry:
SVC 1 ; Enter kernel
SVC 1 // Enter kernel
_txm_module_priv:
; At this point, we are out of user mode. The original LR has been saved in the
; thread control block. Simply call the kernel dispatch function.
/* At this point, we are out of user mode. The original LR has been saved in the
thread control block. Simply call the kernel dispatch function. */
BL _txm_module_manager_kernel_dispatch
; Pickup the original LR value while still in privileged mode
LDR r2, =_tx_thread_current_ptr ; Build current thread pointer address
LDR r3, [r2] ; Pickup current thread pointer
LDR lr, [r3, #0xA0] ; Pickup saved LR from original call
/* Pickup the original LR value while still in privileged mode */
LDR r2, =_tx_thread_current_ptr // Build current thread pointer address
LDR r3, [r2] // Pickup current thread pointer
LDR lr, [r3, #0xA0] // Pickup saved LR from original call
SVC 2 ; Exit kernel and return to user mode
SVC 2 // Exit kernel and return to user mode
_txm_module_user_mode_exit:
BX lr ; Return to the caller
BX lr // Return to the caller
NOP
NOP
NOP
NOP
;}
// }
END

256
ports_module/cortex_m3/iar/module_manager/src/tx_thread_stack_build.s
View File

@@ -1,134 +1,132 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Thread */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_thread_stack_build Cortex-M3/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function builds a stack frame on the supplied thread's stack. */
;/* The stack frame results in a fake interrupt return to the supplied */
;/* function pointer. */
;/* */
;/* INPUT */
;/* */
;/* thread_ptr Pointer to thread control blk */
;/* function_ptr Pointer to return function */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* None */
;/* */
;/* CALLED BY */
;/* */
;/* _tx_thread_create Create thread service */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 William E. Lamie Initial Version 6.1 */
;/* */
;/**************************************************************************/
;VOID _tx_thread_stack_build(TX_THREAD *thread_ptr, VOID (*function_ptr)(VOID))
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_stack_build Cortex-Mx/IAR */
/* 6.1.8 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function builds a stack frame on the supplied thread's stack. */
/* The stack frame results in a fake interrupt return to the supplied */
/* function pointer. */
/* */
/* INPUT */
/* */
/* thread_ptr Pointer to thread control blk */
/* function_ptr Pointer to return function */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _tx_thread_create Create thread service */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 08-02-2021 Scott Larson Initial Version 6.1.8 */
/* */
/**************************************************************************/
// VOID _tx_thread_stack_build(TX_THREAD *thread_ptr, VOID (*function_ptr)(VOID))
// {
PUBLIC _tx_thread_stack_build
_tx_thread_stack_build:
;
;
; /* Build a fake interrupt frame. The form of the fake interrupt stack
; on the Cortex-M should look like the following after it is built:
;
; Stack Top:
; LR Interrupted LR (LR at time of PENDSV)
; r4 Initial value for r4
; r5 Initial value for r5
; r6 Initial value for r6
; r7 Initial value for r7
; r8 Initial value for r8
; r9 Initial value for r9
; r10 Initial value for r10
; r11 Initial value for r11
; r0 Initial value for r0 (Hardware stack starts here!!)
; r1 Initial value for r1
; r2 Initial value for r2
; r3 Initial value for r3
; r12 Initial value for r12
; lr Initial value for lr
; pc Initial value for pc
; xPSR Initial value for xPSR
;
; Stack Bottom: (higher memory address) */
;
LDR r2, [r0, #16] ; Pickup end of stack area
BIC r2, r2, #0x7 ; Align frame for 8-byte alignment
SUB r2, r2, #68 ; Subtract frame size
LDR r3, =0xFFFFFFFD ; Build initial LR value
STR r3, [r2, #0] ; Save on the stack
;
; /* Actually build the stack frame. */
;
MOV r3, #0 ; Build initial register value
STR r3, [r2, #4] ; Store initial r4
STR r3, [r2, #8] ; Store initial r5
STR r3, [r2, #12] ; Store initial r6
STR r3, [r2, #16] ; Store initial r7
STR r3, [r2, #20] ; Store initial r8
STR r3, [r2, #24] ; Store initial r9
STR r3, [r2, #28] ; Store initial r10
STR r3, [r2, #32] ; Store initial r11
;
; /* Hardware stack follows. */
;
STR r3, [r2, #36] ; Store initial r0
STR r3, [r2, #40] ; Store initial r1
STR r3, [r2, #44] ; Store initial r2
STR r3, [r2, #48] ; Store initial r3
STR r3, [r2, #52] ; Store initial r12
MOV r3, #0xFFFFFFFF ; Poison EXC_RETURN value
STR r3, [r2, #56] ; Store initial lr
STR r1, [r2, #60] ; Store initial pc
MOV r3, #0x01000000 ; Only T-bit need be set
STR r3, [r2, #64] ; Store initial xPSR
;
; /* Setup stack pointer. */
; thread_ptr -> tx_thread_stack_ptr = r2;
;
STR r2, [r0, #8] ; Save stack pointer in thread's
; control block
BX lr ; Return to caller
;}
/* Build a fake interrupt frame. The form of the fake interrupt stack
on the Cortex-M should look like the following after it is built:
Stack Top:
LR Interrupted LR (LR at time of PENDSV)
r4 Initial value for r4
r5 Initial value for r5
r6 Initial value for r6
r7 Initial value for r7
r8 Initial value for r8
r9 Initial value for r9
r10 Initial value for r10
r11 Initial value for r11
r0 Initial value for r0 (Hardware stack starts here!!)
r1 Initial value for r1
r2 Initial value for r2
r3 Initial value for r3
r12 Initial value for r12
lr Initial value for lr
pc Initial value for pc
xPSR Initial value for xPSR
Stack Bottom: (higher memory address) */
LDR r2, [r0, #16] // Pickup end of stack area
BIC r2, r2, #0x7 // Align frame for 8-byte alignment
SUB r2, r2, #68 // Subtract frame size
LDR r3, =0xFFFFFFFD // Build initial LR value
STR r3, [r2, #0] // Save on the stack
/* Actually build the stack frame. */
MOV r3, #0 // Build initial register value
STR r3, [r2, #4] // Store initial r4
STR r3, [r2, #8] // Store initial r5
STR r3, [r2, #12] // Store initial r6
STR r3, [r2, #16] // Store initial r7
STR r3, [r2, #20] // Store initial r8
STR r3, [r2, #24] // Store initial r9
STR r3, [r2, #28] // Store initial r10
STR r3, [r2, #32] // Store initial r11
/* Hardware stack follows. */
STR r3, [r2, #36] // Store initial r0
STR r3, [r2, #40] // Store initial r1
STR r3, [r2, #44] // Store initial r2
STR r3, [r2, #48] // Store initial r3
STR r3, [r2, #52] // Store initial r12
MOV r3, #0xFFFFFFFF // Poison EXC_RETURN value
STR r3, [r2, #56] // Store initial lr
STR r1, [r2, #60] // Store initial pc
MOV r3, #0x01000000 // Only T-bit need be set
STR r3, [r2, #64] // Store initial xPSR
/* Setup stack pointer. */
// thread_ptr -> tx_thread_stack_ptr = r2;
STR r2, [r0, #8] // Save stack pointer in thread's
// control block
BX lr // Return to caller
// }
END

167
ports_module/cortex_m3/iar/module_manager/src/tx_thread_system_return.s
View File

@@ -1,87 +1,92 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Thread */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_thread_system_return Cortex-M3/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function is target processor specific. It is used to transfer */
;/* control from a thread back to the ThreadX system. Only a */
;/* minimal context is saved since the compiler assumes temp registers */
;/* are going to get slicked by a function call anyway. */
;/* */
;/* INPUT */
;/* */
;/* None */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* _tx_thread_schedule Thread scheduling loop */
;/* */
;/* CALLED BY */
;/* */
;/* ThreadX components */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 William E. Lamie Initial Version 6.1 */
;/* */
;/**************************************************************************/
;VOID _tx_thread_system_return(VOID)
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_system_return Cortex-Mx/IAR */
/* 6.1.8 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is target processor specific. It is used to transfer */
/* control from a thread back to the ThreadX system. Only a */
/* minimal context is saved since the compiler assumes temp registers */
/* are going to get slicked by a function call anyway. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _tx_thread_schedule Thread scheduling loop */
/* */
/* CALLED BY */
/* */
/* ThreadX components */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 08-02-2021 Scott Larson Initial Version 6.1.8 */
/* */
/**************************************************************************/
// VOID _tx_thread_system_return(VOID)
// {
PUBLIC _tx_thread_system_return
_tx_thread_system_return??rA:
_tx_thread_system_return:
;
; /* Return to real scheduler via PendSV. Note that this routine is often
; replaced with in-line assembly in tx_port.h to improved performance. */
;
MOV r0, #0x10000000 ; Load PENDSVSET bit
MOV r1, #0xE000E000 ; Load NVIC base
STR r0, [r1, #0xD04] ; Set PENDSVBIT in ICSR
MRS r0, IPSR ; Pickup IPSR
CMP r0, #0 ; Is it a thread returning?
BNE _isr_context ; If ISR, skip interrupt enable
MRS r1, PRIMASK ; Thread context returning, pickup PRIMASK
CPSIE i ; Enable interrupts
MSR PRIMASK, r1 ; Restore original interrupt posture
/* Return to real scheduler via PendSV. Note that this routine is often
replaced with in-line assembly in tx_port.h to improved performance. */
MOV r0, #0x10000000 // Load PENDSVSET bit
MOV r1, #0xE000E000 // Load NVIC base
STR r0, [r1, #0xD04] // Set PENDSVBIT in ICSR
MRS r0, IPSR // Pickup IPSR
CMP r0, #0 // Is it a thread returning?
BNE _isr_context // If ISR, skip interrupt enable
#ifdef TX_PORT_USE_BASEPRI
MRS r1, BASEPRI // Thread context returning, pickup BASEPRI
MOV r0, #0
MSR BASEPRI, r0 // Enable interrupts
MSR BASEPRI, r1 // Restore original interrupt posture
#else
MRS r1, PRIMASK // Thread context returning, pickup PRIMASK
CPSIE i // Enable interrupts
MSR PRIMASK, r1 // Restore original interrupt posture
#endif
_isr_context:
BX lr ; Return to caller
;}
BX lr // Return to caller
// }
END

464
ports_module/cortex_m3/iar/module_manager/src/tx_timer_interrupt.s
View File

@@ -1,26 +1,25 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Timer */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Timer */
/** */
/**************************************************************************/
/**************************************************************************/
EXTERN _tx_timer_time_slice
EXTERN _tx_timer_system_clock
EXTERN _tx_timer_current_ptr
@@ -33,224 +32,221 @@
EXTERN _tx_thread_current_ptr
EXTERN _tx_thread_execute_ptr
EXTERN _tx_thread_preempt_disable
;
;
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_timer_interrupt Cortex-M3/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function processes the hardware timer interrupt. This */
;/* processing includes incrementing the system clock and checking for */
;/* time slice and/or timer expiration. If either is found, the */
;/* expiration functions are called. */
;/* */
;/* INPUT */
;/* */
;/* None */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* _tx_timer_expiration_process Timer expiration processing */
;/* _tx_thread_time_slice Time slice interrupted thread */
;/* */
;/* CALLED BY */
;/* */
;/* interrupt vector */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 William E. Lamie Initial Version 6.1 */
;/* */
;/**************************************************************************/
;VOID _tx_timer_interrupt(VOID)
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_timer_interrupt Cortex-Mx/IAR */
/* 6.1.8 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function processes the hardware timer interrupt. This */
/* processing includes incrementing the system clock and checking for */
/* time slice and/or timer expiration. If either is found, the */
/* expiration functions are called. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _tx_timer_expiration_process Timer expiration processing */
/* _tx_thread_time_slice Time slice interrupted thread */
/* */
/* CALLED BY */
/* */
/* interrupt vector */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 08-02-2021 Scott Larson Initial Version 6.1.8 */
/* */
/**************************************************************************/
// VOID _tx_timer_interrupt(VOID)
// {
PUBLIC _tx_timer_interrupt
_tx_timer_interrupt:
;
; /* Upon entry to this routine, it is assumed that the compiler scratch registers are available
; for use. */
;
; /* Increment the system clock. */
; _tx_timer_system_clock++;
;
MOV32 r1, _tx_timer_system_clock ; Pickup address of system clock
LDR r0, [r1, #0] ; Pickup system clock
ADD r0, r0, #1 ; Increment system clock
STR r0, [r1, #0] ; Store new system clock
;
; /* Test for time-slice expiration. */
; if (_tx_timer_time_slice)
; {
;
MOV32 r3, _tx_timer_time_slice ; Pickup address of time-slice
LDR r2, [r3, #0] ; Pickup time-slice
CBZ r2, __tx_timer_no_time_slice ; Is it non-active?
; Yes, skip time-slice processing
;
; /* Decrement the time_slice. */
; _tx_timer_time_slice--;
;
SUB r2, r2, #1 ; Decrement the time-slice
STR r2, [r3, #0] ; Store new time-slice value
;
; /* Check for expiration. */
; if (__tx_timer_time_slice == 0)
;
CBNZ r2, __tx_timer_no_time_slice ; Has it expired?
;
; /* Set the time-slice expired flag. */
; _tx_timer_expired_time_slice = TX_TRUE;
;
MOV32 r3, _tx_timer_expired_time_slice ; Pickup address of expired flag
MOV r0, #1 ; Build expired value
STR r0, [r3, #0] ; Set time-slice expiration flag
;
; }
;
__tx_timer_no_time_slice:
;
; /* Test for timer expiration. */
; if (*_tx_timer_current_ptr)
; {
;
MOV32 r1, _tx_timer_current_ptr ; Pickup current timer pointer address
LDR r0, [r1, #0] ; Pickup current timer
LDR r2, [r0, #0] ; Pickup timer list entry
CBZ r2, __tx_timer_no_timer ; Is there anything in the list?
; No, just increment the timer
;
; /* Set expiration flag. */
; _tx_timer_expired = TX_TRUE;
;
MOV32 r3, _tx_timer_expired ; Pickup expiration flag address
MOV r2, #1 ; Build expired value
STR r2, [r3, #0] ; Set expired flag
B __tx_timer_done ; Finished timer processing
;
; }
; else
; {
__tx_timer_no_timer:
;
; /* No timer expired, increment the timer pointer. */
; _tx_timer_current_ptr++;
;
ADD r0, r0, #4 ; Move to next timer
;
; /* Check for wrap-around. */
; if (_tx_timer_current_ptr == _tx_timer_list_end)
;
MOV32 r3, _tx_timer_list_end ; Pickup addr of timer list end
LDR r2, [r3, #0] ; Pickup list end
CMP r0, r2 ; Are we at list end?
BNE __tx_timer_skip_wrap ; No, skip wrap-around logic
;
; /* Wrap to beginning of list. */
; _tx_timer_current_ptr = _tx_timer_list_start;
;
MOV32 r3, _tx_timer_list_start ; Pickup addr of timer list start
LDR r0, [r3, #0] ; Set current pointer to list start
;
__tx_timer_skip_wrap:
;
STR r0, [r1, #0] ; Store new current timer pointer
; }
;
__tx_timer_done:
;
;
; /* See if anything has expired. */
; if ((_tx_timer_expired_time_slice) || (_tx_timer_expired))
; {
;
MOV32 r3, _tx_timer_expired_time_slice ; Pickup addr of expired flag
LDR r2, [r3, #0] ; Pickup time-slice expired flag
CBNZ r2, __tx_something_expired ; Did a time-slice expire?
; If non-zero, time-slice expired
MOV32 r1, _tx_timer_expired ; Pickup addr of other expired flag
LDR r0, [r1, #0] ; Pickup timer expired flag
CBZ r0, __tx_timer_nothing_expired ; Did a timer expire?
; No, nothing expired
;
__tx_something_expired:
;
;
STMDB sp!, {r0, lr} ; Save the lr register on the stack
; and save r0 just to keep 8-byte alignment
;
; /* Did a timer expire? */
; if (_tx_timer_expired)
; {
;
MOV32 r1, _tx_timer_expired ; Pickup addr of expired flag
LDR r0, [r1, #0] ; Pickup timer expired flag
CBZ r0, __tx_timer_dont_activate ; Check for timer expiration
; If not set, skip timer activation
;
; /* Process timer expiration. */
; _tx_timer_expiration_process();
;
BL _tx_timer_expiration_process ; Call the timer expiration handling routine
;
; }
__tx_timer_dont_activate:
;
; /* Did time slice expire? */
; if (_tx_timer_expired_time_slice)
; {
;
MOV32 r3, _tx_timer_expired_time_slice ; Pickup addr of time-slice expired
LDR r2, [r3, #0] ; Pickup the actual flag
CBZ r2, __tx_timer_not_ts_expiration ; See if the flag is set
; No, skip time-slice processing
;
; /* Time slice interrupted thread. */
; _tx_thread_time_slice();
BL _tx_thread_time_slice ; Call time-slice processing
MOV32 r0, _tx_thread_preempt_disable ; Build address of preempt disable flag
LDR r1, [r0] ; Is the preempt disable flag set?
CBNZ r1, __tx_timer_skip_time_slice ; Yes, skip the PendSV logic
MOV32 r0, _tx_thread_current_ptr ; Build current thread pointer address
LDR r1, [r0] ; Pickup the current thread pointer
MOV32 r2, _tx_thread_execute_ptr ; Build execute thread pointer address
LDR r3, [r2] ; Pickup the execute thread pointer
MOV32 r0, 0xE000ED04 ; Build address of control register
MOV32 r2, 0x10000000 ; Build value for PendSV bit
CMP r1, r3 ; Are they the same?
BEQ __tx_timer_skip_time_slice ; If the same, there was no time-slice performed
STR r2, [r0] ; Not the same, issue the PendSV for preemption
/* Upon entry to this routine, it is assumed that the compiler scratch registers are available
for use. */
/* Increment the system clock. */
// _tx_timer_system_clock++;
LDR r1, =_tx_timer_system_clock // Pickup address of system clock
LDR r0, [r1, #0] // Pickup system clock
ADD r0, r0, #1 // Increment system clock
STR r0, [r1, #0] // Store new system clock
/* Test for time-slice expiration. */
// if (_tx_timer_time_slice)
// {
LDR r3, =_tx_timer_time_slice // Pickup address of time-slice
LDR r2, [r3, #0] // Pickup time-slice
CBZ r2, __tx_timer_no_time_slice // Is it non-active?
// Yes, skip time-slice processing
/* Decrement the time_slice. */
// _tx_timer_time_slice--;
SUB r2, r2, #1 // Decrement the time-slice
STR r2, [r3, #0] // Store new time-slice value
/* Check for expiration. */
// if (__tx_timer_time_slice == 0)
CBNZ r2, __tx_timer_no_time_slice // Has it expired?
// No, skip expiration processing
/* Set the time-slice expired flag. */
// _tx_timer_expired_time_slice = TX_TRUE;
LDR r3, =_tx_timer_expired_time_slice // Pickup address of expired flag
MOV r0, #1 // Build expired value
STR r0, [r3, #0] // Set time-slice expiration flag
// }
__tx_timer_no_time_slice:
/* Test for timer expiration. */
// if (*_tx_timer_current_ptr)
// {
LDR r1, =_tx_timer_current_ptr // Pickup current timer pointer address
LDR r0, [r1, #0] // Pickup current timer
LDR r2, [r0, #0] // Pickup timer list entry
CBZ r2, __tx_timer_no_timer // Is there anything in the list?
// No, just increment the timer
/* Set expiration flag. */
// _tx_timer_expired = TX_TRUE;
LDR r3, =_tx_timer_expired // Pickup expiration flag address
MOV r2, #1 // Build expired value
STR r2, [r3, #0] // Set expired flag
B __tx_timer_done // Finished timer processing
// }
// else
// {
__tx_timer_no_timer:
/* No timer expired, increment the timer pointer. */
// _tx_timer_current_ptr++;
ADD r0, r0, #4 // Move to next timer
/* Check for wrap-around. */
// if (_tx_timer_current_ptr == _tx_timer_list_end)
LDR r3, =_tx_timer_list_end // Pickup addr of timer list end
LDR r2, [r3, #0] // Pickup list end
CMP r0, r2 // Are we at list end?
BNE __tx_timer_skip_wrap // No, skip wrap-around logic
/* Wrap to beginning of list. */
// _tx_timer_current_ptr = _tx_timer_list_start;
LDR r3, =_tx_timer_list_start // Pickup addr of timer list start
LDR r0, [r3, #0] // Set current pointer to list start
__tx_timer_skip_wrap:
STR r0, [r1, #0] // Store new current timer pointer
// }
__tx_timer_done:
/* See if anything has expired. */
// if ((_tx_timer_expired_time_slice) || (_tx_timer_expired))
// {
LDR r3, =_tx_timer_expired_time_slice // Pickup addr of expired flag
LDR r2, [r3, #0] // Pickup time-slice expired flag
CBNZ r2, __tx_something_expired // Did a time-slice expire?
// If non-zero, time-slice expired
LDR r1, =_tx_timer_expired // Pickup addr of other expired flag
LDR r0, [r1, #0] // Pickup timer expired flag
CBZ r0, __tx_timer_nothing_expired // Did a timer expire?
// No, nothing expired
__tx_something_expired:
STMDB sp!, {r0, lr} // Save the lr register on the stack
// and save r0 just to keep 8-byte alignment
/* Did a timer expire? */
// if (_tx_timer_expired)
// {
LDR r1, =_tx_timer_expired // Pickup addr of expired flag
LDR r0, [r1, #0] // Pickup timer expired flag
CBZ r0, __tx_timer_dont_activate // Check for timer expiration
// If not set, skip timer activation
/* Process timer expiration. */
// _tx_timer_expiration_process();
BL _tx_timer_expiration_process // Call the timer expiration handling routine
// }
__tx_timer_dont_activate:
/* Did time slice expire? */
// if (_tx_timer_expired_time_slice)
// {
LDR r3, =_tx_timer_expired_time_slice // Pickup addr of time-slice expired
LDR r2, [r3, #0] // Pickup the actual flag
CBZ r2, __tx_timer_not_ts_expiration // See if the flag is set
// No, skip time-slice processing
/* Time slice interrupted thread. */
// _tx_thread_time_slice();
BL _tx_thread_time_slice // Call time-slice processing
LDR r0, =_tx_thread_preempt_disable // Build address of preempt disable flag
LDR r1, [r0] // Is the preempt disable flag set?
CBNZ r1, __tx_timer_skip_time_slice // Yes, skip the PendSV logic
LDR r0, =_tx_thread_current_ptr // Build current thread pointer address
LDR r1, [r0] // Pickup the current thread pointer
LDR r2, =_tx_thread_execute_ptr // Build execute thread pointer address
LDR r3, [r2] // Pickup the execute thread pointer
LDR r0, =0xE000ED04 // Build address of control register
LDR r2, =0x10000000 // Build value for PendSV bit
CMP r1, r3 // Are they the same?
BEQ __tx_timer_skip_time_slice // If the same, there was no time-slice performed
STR r2, [r0] // Not the same, issue the PendSV for preemption
__tx_timer_skip_time_slice:
;
; }
;
// }
__tx_timer_not_ts_expiration:
;
LDMIA sp!, {r0, lr} ; Recover lr register (r0 is just there for
; the 8-byte stack alignment
;
; }
;
LDMIA sp!, {r0, lr} // Recover lr register (r0 is just there for
// the 8-byte stack alignment
// }
__tx_timer_nothing_expired:
DSB ; Complete all memory access
BX lr ; Return to caller
;
;}
DSB // Complete all memory access
BX lr // Return to caller
// }
END

4
ports_module/cortex_m3/iar/module_manager/src/txm_module_manager_alignment_adjust.c
View File

@@ -61,7 +61,7 @@
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
ULONG _txm_power_of_two_block_size(ULONG size)
@@ -128,7 +128,7 @@ ULONG _txm_power_of_two_block_size(ULONG size)
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
VOID _txm_module_manager_alignment_adjust(TXM_MODULE_PREAMBLE *module_preamble,

2
ports_module/cortex_m3/iar/module_manager/src/txm_module_manager_external_memory_enable.c
View File

@@ -70,7 +70,7 @@
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
UINT _txm_module_manager_external_memory_enable(TXM_MODULE_INSTANCE *module_instance,

2
ports_module/cortex_m3/iar/module_manager/src/txm_module_manager_memory_fault_handler.c
View File

@@ -76,7 +76,7 @@ TXM_MODULE_MANAGER_FAULT_INFO
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
VOID _txm_module_manager_memory_fault_handler(VOID)

2
ports_module/cortex_m3/iar/module_manager/src/txm_module_manager_memory_fault_notify.c
View File

@@ -71,7 +71,7 @@ extern VOID (*_txm_module_manager_fault_notify)(TX_THREAD *, TXM_MODULE_INSTA
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
UINT _txm_module_manager_memory_fault_notify(VOID (*notify_function)(TX_THREAD *, TXM_MODULE_INSTANCE *))

6
ports_module/cortex_m3/iar/module_manager/src/txm_module_manager_mm_register_setup.c
View File

@@ -61,7 +61,7 @@
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
ULONG _txm_module_manager_region_size_get(ULONG block_size)
@@ -184,7 +184,7 @@ ULONG return_value;
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
ULONG _txm_module_manager_calculate_srd_bits(ULONG block_size, ULONG length)
@@ -261,7 +261,7 @@ UINT srd_bit_index;
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
VOID _txm_module_manager_mm_register_setup(TXM_MODULE_INSTANCE *module_instance)

265
ports_module/cortex_m3/iar/module_manager/src/txm_module_manager_thread_stack_build.s
View File

@@ -1,141 +1,138 @@
;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Module Manager */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
;
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Module Manager */
/** */
/**************************************************************************/
/**************************************************************************/
SECTION `.text`:CODE:NOROOT(2)
THUMB
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _txm_module_manager_thread_stack_build Cortex-M3/MPU/IAR */
;/* 6.1 */
;/* AUTHOR */
;/* */
;/* Scott Larson, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function builds a stack frame on the supplied thread's stack. */
;/* The stack frame results in a fake interrupt return to the supplied */
;/* function pointer. */
;/* */
;/* INPUT */
;/* */
;/* thread_ptr Pointer to thread */
;/* function_ptr Pointer to shell function */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* None */
;/* */
;/* CALLED BY */
;/* */
;/* _tx_thread_create Create thread service */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 09-30-2020 Scott Larson Initial Version 6.1 */
;/* */
;/**************************************************************************/
;VOID _txm_module_manager_thread_stack_build(TX_THREAD *thread_ptr, VOID (*function_ptr)(TX_THREAD *, TXM_MODULE_INSTANCE *))
;{
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_thread_stack_build Cortex-M3/MPU/IAR */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function builds a stack frame on the supplied thread's stack. */
/* The stack frame results in a fake interrupt return to the supplied */
/* function pointer. */
/* */
/* INPUT */
/* */
/* thread_ptr Pointer to thread */
/* function_ptr Pointer to shell function */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _tx_thread_create Create thread service */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
// VOID _txm_module_manager_thread_stack_build(TX_THREAD *thread_ptr, VOID (*function_ptr)(TX_THREAD *, TXM_MODULE_INSTANCE *))
// {
PUBLIC _txm_module_manager_thread_stack_build
_txm_module_manager_thread_stack_build:
;
;
; /* Build a fake interrupt frame. The form of the fake interrupt stack
; on the Cortex-M should look like the following after it is built:
;
; Stack Top:
; LR Interrupted LR (LR at time of PENDSV)
; r4 Initial value for r4
; r5 Initial value for r5
; r6 Initial value for r6
; r7 Initial value for r7
; r8 Initial value for r8
; r9 Initial value for r9
; r10 Initial value for r10
; r11 Initial value for r11
; r0 Initial value for r0 (Hardware stack starts here!!)
; r1 Initial value for r1
; r2 Initial value for r2
; r3 Initial value for r3
; r12 Initial value for r12
; lr Initial value for lr
; pc Initial value for pc
; xPSR Initial value for xPSR
;
; Stack Bottom: (higher memory address) */
;
LDR r2, [r0, #16] ; Pickup end of stack area
BIC r2, r2, #0x7 ; Align frame
SUB r2, r2, #68 ; Subtract frame size
LDR r3, =0xFFFFFFFD ; Build initial LR value
STR r3, [r2, #0] ; Save on the stack
;
; /* Actually build the stack frame. */
;
MOV r3, #0 ; Build initial register value
STR r3, [r2, #4] ; Store initial r4
STR r3, [r2, #8] ; Store initial r5
STR r3, [r2, #12] ; Store initial r6
STR r3, [r2, #16] ; Store initial r7
STR r3, [r2, #20] ; Store initial r8
STR r3, [r2, #28] ; Store initial r10
STR r3, [r2, #32] ; Store initial r11
;
; /* Hardware stack follows. */
;
STR r0, [r2, #36] ; Store initial r0, which is the thread control block
LDR r3, [r0, #8] ; Pickup thread entry info pointer,which is in the stack pointer position of the thread control block.
; It was setup in the txm_module_manager_thread_create function. It will be overwritten later in this
; function with the actual, initial stack pointer.
STR r3, [r2, #40] ; Store initial r1, which is the module entry information.
LDR r3, [r3, #8] ; Pickup data base register from the module information
STR r3, [r2, #24] ; Store initial r9 (data base register)
MOV r3, #0 ; Clear r3 again
/* Build a fake interrupt frame. The form of the fake interrupt stack
on the Cortex-M should look like the following after it is built:
STR r3, [r2, #44] ; Store initial r2
STR r3, [r2, #48] ; Store initial r3
STR r3, [r2, #52] ; Store initial r12
MOV r3, #0xFFFFFFFF ; Poison EXC_RETURN value
STR r3, [r2, #56] ; Store initial lr
STR r1, [r2, #60] ; Store initial pc
MOV r3, #0x01000000 ; Only T-bit need be set
STR r3, [r2, #64] ; Store initial xPSR
;
; /* Setup stack pointer. */
; thread_ptr -> tx_thread_stack_ptr = r2;
;
STR r2, [r0, #8] ; Save stack pointer in thread's control block
BX lr ; Return to caller
;}
Stack Top:
lr Interrupted lr (lr at time of PENDSV)
r4 Initial value for r4
r5 Initial value for r5
r6 Initial value for r6
r7 Initial value for r7
r8 Initial value for r8
r9 Initial value for r9
r10 Initial value for r10
r11 Initial value for r11
r0 Initial value for r0 (Hardware stack starts here!!)
r1 Initial value for r1
r2 Initial value for r2
r3 Initial value for r3
r12 Initial value for r12
lr Initial value for lr
pc Initial value for pc
xPSR Initial value for xPSR
Stack Bottom: (higher memory address) */
LDR r2, [r0, #16] // Pickup end of stack area
BIC r2, r2, #0x7 // Align frame
SUB r2, r2, #68 // Subtract frame size
LDR r3, =0xFFFFFFFD // Build initial LR value
STR r3, [r2, #0] // Save on the stack
/* Actually build the stack frame. */
MOV r3, #0 // Build initial register value
STR r3, [r2, #4] // Store initial r4
STR r3, [r2, #8] // Store initial r5
STR r3, [r2, #12] // Store initial r6
STR r3, [r2, #16] // Store initial r7
STR r3, [r2, #20] // Store initial r8
STR r3, [r2, #28] // Store initial r10
STR r3, [r2, #32] // Store initial r11
/* Hardware stack follows. */
STR r0, [r2, #36] // Store initial r0, which is the thread control block
LDR r3, [r0, #8] // Pickup thread entry info pointer,which is in the stack pointer position of the thread control block.
// It was setup in the txm_module_manager_thread_create function. It will be overwritten later in this
// function with the actual, initial stack pointer.
STR r3, [r2, #40] // Store initial r1, which is the module entry information.
LDR r3, [r3, #8] // Pickup data base register from the module information
STR r3, [r2, #24] // Store initial r9 (data base register)
MOV r3, #0 // Clear r3 again
STR r3, [r2, #44] // Store initial r2
STR r3, [r2, #48] // Store initial r3
STR r3, [r2, #52] // Store initial r12
MOV r3, #0xFFFFFFFF // Poison EXC_RETURN value
STR r3, [r2, #56] // Store initial lr
STR r1, [r2, #60] // Store initial pc
MOV r3, #0x01000000 // Only T-bit need be set
STR r3, [r2, #64] // Store initial xPSR
/* Setup stack pointer. */
// thread_ptr -> tx_thread_stack_ptr = r2;
STR r2, [r0, #8] // Save stack pointer in thread's control block
BX lr // Return to caller
// }
END