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6.1 minor release

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This commit is contained in:
Scott Larson
2020-09-30 15:42:41 -07:00
parent 7287542cc8
commit 1b5816a206
3038 changed files with 377204 additions and 8606 deletions
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5
ports_module/cortex-m3/ac6/example_build/all.bat Normal file
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@ECHO OFF
CALL clean.bat
CALL setenv.bat
CALL initws.bat
CALL build.bat

24
ports_module/cortex-m3/ac6/example_build/build.bat Normal file
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@ECHO OFF
ECHO Build starting...
SETLOCAL ENABLEEXTENSIONS
IF DEFINED ARMDSIDEC GOTO IARBUILD_DEFINED
ECHO ERROR: please set ARMDSIDEC to the path of the ARM Developer Studio eclipsec.exe program
EXIT /B 2
:IARBUILD_DEFINED
IF EXIST %ARMDSIDEC% GOTO ARMDSIDEC_FOUND
ECHO ERROR: the command ARMDSIDEC doesn't exist: %ARMDSIDEC%
EXIT /B 2
:ARMDSIDEC_FOUND
%ARMDSIDEC% -nosplash -application org.eclipse.cdt.managedbuilder.core.headlessbuild -data .\workspace -build all
IF %ERRORLEVEL% EQU 0 GOTO BUILD_OK
ECHO ERROR: build failed.
EXIT /B 1
:BUILD_OK
ECHO Build completed without errors.
EXIT /B 0

4
ports_module/cortex-m3/ac6/example_build/clean.bat Normal file
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@ECHO OFF
ECHO Cleaning...
RMDIR /Q /S workspace
ECHO Done.

14
ports_module/cortex-m3/ac6/example_build/initws.bat Normal file
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@ECHO OFF
ECHO Initializing the workspace...
SETLOCAL ENABLEEXTENSIONS
%ARMDSIDEC% -nosplash -application org.eclipse.cdt.managedbuilder.core.headlessbuild -data .\workspace -import .\tx -import .\txm -import .\sample_threadx -import .\sample_threadx_module -import .\sample_threadx_module_manager
IF %ERRORLEVEL% EQU 0 GOTO WS_INITIALIZED
ECHO ERROR: failed to initialize the workspace
EXIT /B 2
:WS_INITIALIZED
echo Workspace initialized.
EXIT /B 0

192
ports_module/cortex-m3/ac6/example_build/sample_threadx/.cproject Normal file
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28
ports_module/cortex-m3/ac6/example_build/sample_threadx/.project Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
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<comment></comment>
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96
ports_module/cortex-m3/ac6/example_build/sample_threadx/exceptions.c Normal file
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/*
** Copyright (c) 2006-2017 Arm Limited (or its affiliates). All rights reserved.
** Use, modification and redistribution of this file is subject to your possession of a
** valid End User License Agreement for the Arm Product of which these examples are part of
** and your compliance with all applicable terms and conditions of such licence agreement.
*/
/* This file contains the default exception handlers and vector table.
All exceptions are handled in Handler mode. Processor state is automatically
pushed onto the stack when an exception occurs, and popped from the stack at
the end of the handler */
/* Exception Handlers */
/* Marking as __attribute__((interrupt)) avoids them being accidentally called from elsewhere */
__attribute__((interrupt)) void NMIException(void)
{ while(1); }
__attribute__((interrupt)) void HardFaultException(void)
{ while(1); }
__attribute__((interrupt)) void MemManageException(void)
{ while(1); }
__attribute__((interrupt)) void BusFaultException(void)
{ while(1); }
__attribute__((interrupt)) void UsageFaultException(void)
{ while(1); }
void __tx_SVCallHandler(void);
__attribute__((interrupt)) void DebugMonitor(void)
{ while(1); }
void __tx_PendSVHandler(void);
void __tx_SysTickHandler(void);
__attribute__((interrupt)) void InterruptHandler(void)
{ while(1); }
/* typedef for the function pointers in the vector table */
typedef void(* const ExecFuncPtr)(void) __attribute__((interrupt));
/* Linker-generated Stack Base address */
#ifdef TWO_REGION
extern unsigned int Image$$ARM_LIB_STACK$$ZI$$Limit; /* for Two Region model */
#else
extern unsigned int Image$$ARM_LIB_STACKHEAP$$ZI$$Limit; /* for (default) One Region model */
#endif
/* Entry point for C run-time initialization */
extern int __main(void);
/* Vector table
Create a named ELF section for the vector table that can be placed in a scatter file.
The first two entries are:
Initial SP = |Image$$ARM_LIB_STACKHEAP$$ZI$$Limit| for (default) One Region model
or |Image$$ARM_LIB_STACK$$ZI$$Limit| for Two Region model
Initial PC= &__main (with LSB set to indicate Thumb)
*/
ExecFuncPtr vector_table[] __attribute__((section("vectors"))) = {
/* Configure Initial Stack Pointer using linker-generated symbol */
#ifdef TWO_REGION
#pragma import(__use_two_region_memory)
(ExecFuncPtr)&Image$$ARM_LIB_STACK$$ZI$$Limit,
#else /* (default) One Region model */
(ExecFuncPtr)&Image$$ARM_LIB_STACKHEAP$$ZI$$Limit,
#endif
(ExecFuncPtr)__main, /* Initial PC, set to entry point */
NMIException,
HardFaultException,
MemManageException,
BusFaultException,
UsageFaultException,
0, 0, 0, 0, /* Reserved */
__tx_SVCallHandler,
DebugMonitor,
0, /* Reserved */
__tx_PendSVHandler,
__tx_SysTickHandler,
/* Add up to 240 interrupt handlers, starting here... */
InterruptHandler,
InterruptHandler, /* Some dummy interrupt handlers */
InterruptHandler
/*
:
*/
};

370
ports_module/cortex-m3/ac6/example_build/sample_threadx/sample_threadx.c Normal file
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/* This is a small demo of the high-performance ThreadX kernel. It includes examples of eight
threads of different priorities, using a message queue, semaphore, mutex, event flags group,
byte pool, and block pool. */
#include "tx_api.h"
#define DEMO_STACK_SIZE 1024
#define DEMO_BYTE_POOL_SIZE 9120
#define DEMO_BLOCK_POOL_SIZE 100
#define DEMO_QUEUE_SIZE 100
/* Define the ThreadX object control blocks... */
TX_THREAD thread_0;
TX_THREAD thread_1;
TX_THREAD thread_2;
TX_THREAD thread_3;
TX_THREAD thread_4;
TX_THREAD thread_5;
TX_THREAD thread_6;
TX_THREAD thread_7;
TX_QUEUE queue_0;
TX_SEMAPHORE semaphore_0;
TX_MUTEX mutex_0;
TX_EVENT_FLAGS_GROUP event_flags_0;
TX_BYTE_POOL byte_pool_0;
TX_BLOCK_POOL block_pool_0;
UCHAR memory_area[DEMO_BYTE_POOL_SIZE];
/* Define the counters used in the demo application... */
ULONG thread_0_counter;
ULONG thread_1_counter;
ULONG thread_1_messages_sent;
ULONG thread_2_counter;
ULONG thread_2_messages_received;
ULONG thread_3_counter;
ULONG thread_4_counter;
ULONG thread_5_counter;
ULONG thread_6_counter;
ULONG thread_7_counter;
/* Define thread prototypes. */
void thread_0_entry(ULONG thread_input);
void thread_1_entry(ULONG thread_input);
void thread_2_entry(ULONG thread_input);
void thread_3_and_4_entry(ULONG thread_input);
void thread_5_entry(ULONG thread_input);
void thread_6_and_7_entry(ULONG thread_input);
/* Define main entry point. */
int main()
{
/* Enter the ThreadX kernel. */
tx_kernel_enter();
}
/* Define what the initial system looks like. */
void tx_application_define(void *first_unused_memory)
{
CHAR *pointer = TX_NULL;
/* Create a byte memory pool from which to allocate the thread stacks. */
tx_byte_pool_create(&byte_pool_0, "byte pool 0", memory_area, DEMO_BYTE_POOL_SIZE);
/* Put system definition stuff in here, e.g. thread creates and other assorted
create information. */
/* Allocate the stack for thread 0. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create the main thread. */
tx_thread_create(&thread_0, "thread 0", thread_0_entry, 0,
pointer, DEMO_STACK_SIZE,
1, 1, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 1. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create threads 1 and 2. These threads pass information through a ThreadX
message queue. It is also interesting to note that these threads have a time
slice. */
tx_thread_create(&thread_1, "thread 1", thread_1_entry, 1,
pointer, DEMO_STACK_SIZE,
16, 16, 4, TX_AUTO_START);
/* Allocate the stack for thread 2. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
tx_thread_create(&thread_2, "thread 2", thread_2_entry, 2,
pointer, DEMO_STACK_SIZE,
16, 16, 4, TX_AUTO_START);
/* Allocate the stack for thread 3. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create threads 3 and 4. These threads compete for a ThreadX counting semaphore.
An interesting thing here is that both threads share the same instruction area. */
tx_thread_create(&thread_3, "thread 3", thread_3_and_4_entry, 3,
pointer, DEMO_STACK_SIZE,
8, 8, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 4. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
tx_thread_create(&thread_4, "thread 4", thread_3_and_4_entry, 4,
pointer, DEMO_STACK_SIZE,
8, 8, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 5. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create thread 5. This thread simply pends on an event flag which will be set
by thread_0. */
tx_thread_create(&thread_5, "thread 5", thread_5_entry, 5,
pointer, DEMO_STACK_SIZE,
4, 4, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 6. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create threads 6 and 7. These threads compete for a ThreadX mutex. */
tx_thread_create(&thread_6, "thread 6", thread_6_and_7_entry, 6,
pointer, DEMO_STACK_SIZE,
8, 8, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 7. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
tx_thread_create(&thread_7, "thread 7", thread_6_and_7_entry, 7,
pointer, DEMO_STACK_SIZE,
8, 8, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the message queue. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_QUEUE_SIZE*sizeof(ULONG), TX_NO_WAIT);
/* Create the message queue shared by threads 1 and 2. */
tx_queue_create(&queue_0, "queue 0", TX_1_ULONG, pointer, DEMO_QUEUE_SIZE*sizeof(ULONG));
/* Create the semaphore used by threads 3 and 4. */
tx_semaphore_create(&semaphore_0, "semaphore 0", 1);
/* Create the event flags group used by threads 1 and 5. */
tx_event_flags_create(&event_flags_0, "event flags 0");
/* Create the mutex used by thread 6 and 7 without priority inheritance. */
tx_mutex_create(&mutex_0, "mutex 0", TX_NO_INHERIT);
/* Allocate the memory for a small block pool. */
tx_byte_allocate(&byte_pool_0, (VOID **) &pointer, DEMO_BLOCK_POOL_SIZE, TX_NO_WAIT);
/* Create a block memory pool to allocate a message buffer from. */
tx_block_pool_create(&block_pool_0, "block pool 0", sizeof(ULONG), pointer, DEMO_BLOCK_POOL_SIZE);
/* Allocate a block and release the block memory. */
tx_block_allocate(&block_pool_0, (VOID **) &pointer, TX_NO_WAIT);
/* Release the block back to the pool. */
tx_block_release(pointer);
}
/* Define the test threads. */
void thread_0_entry(ULONG thread_input)
{
UINT status;
/* This thread simply sits in while-forever-sleep loop. */
while(1)
{
/* Increment the thread counter. */
thread_0_counter++;
/* Sleep for 10 ticks. */
tx_thread_sleep(10);
/* Set event flag 0 to wakeup thread 5. */
status = tx_event_flags_set(&event_flags_0, 0x1, TX_OR);
/* Check status. */
if (status != TX_SUCCESS)
break;
}
}
void thread_1_entry(ULONG thread_input)
{
UINT status;
/* This thread simply sends messages to a queue shared by thread 2. */
while(1)
{
/* Increment the thread counter. */
thread_1_counter++;
/* Send message to queue 0. */
status = tx_queue_send(&queue_0, &thread_1_messages_sent, TX_WAIT_FOREVER);
/* Check completion status. */
if (status != TX_SUCCESS)
break;
/* Increment the message sent. */
thread_1_messages_sent++;
}
}
void thread_2_entry(ULONG thread_input)
{
ULONG received_message;
UINT status;
/* This thread retrieves messages placed on the queue by thread 1. */
while(1)
{
/* Increment the thread counter. */
thread_2_counter++;
/* Retrieve a message from the queue. */
status = tx_queue_receive(&queue_0, &received_message, TX_WAIT_FOREVER);
/* Check completion status and make sure the message is what we
expected. */
if ((status != TX_SUCCESS) || (received_message != thread_2_messages_received))
break;
/* Otherwise, all is okay. Increment the received message count. */
thread_2_messages_received++;
}
}
void thread_3_and_4_entry(ULONG thread_input)
{
UINT status;
/* This function is executed from thread 3 and thread 4. As the loop
below shows, these function compete for ownership of semaphore_0. */
while(1)
{
/* Increment the thread counter. */
if (thread_input == 3)
thread_3_counter++;
else
thread_4_counter++;
/* Get the semaphore with suspension. */
status = tx_semaphore_get(&semaphore_0, TX_WAIT_FOREVER);
/* Check status. */
if (status != TX_SUCCESS)
break;
/* Sleep for 2 ticks to hold the semaphore. */
tx_thread_sleep(2);
/* Release the semaphore. */
status = tx_semaphore_put(&semaphore_0);
/* Check status. */
if (status != TX_SUCCESS)
break;
}
}
void thread_5_entry(ULONG thread_input)
{
UINT status;
ULONG actual_flags;
/* This thread simply waits for an event in a forever loop. */
while(1)
{
/* Increment the thread counter. */
thread_5_counter++;
/* Wait for event flag 0. */
status = tx_event_flags_get(&event_flags_0, 0x1, TX_OR_CLEAR,
&actual_flags, TX_WAIT_FOREVER);
/* Check status. */
if ((status != TX_SUCCESS) || (actual_flags != 0x1))
break;
}
}
void thread_6_and_7_entry(ULONG thread_input)
{
UINT status;
/* This function is executed from thread 6 and thread 7. As the loop
below shows, these function compete for ownership of mutex_0. */
while(1)
{
/* Increment the thread counter. */
if (thread_input == 6)
thread_6_counter++;
else
thread_7_counter++;
/* Get the mutex with suspension. */
status = tx_mutex_get(&mutex_0, TX_WAIT_FOREVER);
/* Check status. */
if (status != TX_SUCCESS)
break;
/* Get the mutex again with suspension. This shows
that an owning thread may retrieve the mutex it
owns multiple times. */
status = tx_mutex_get(&mutex_0, TX_WAIT_FOREVER);
/* Check status. */
if (status != TX_SUCCESS)
break;
/* Sleep for 2 ticks to hold the mutex. */
tx_thread_sleep(2);
/* Release the mutex. */
status = tx_mutex_put(&mutex_0);
/* Check status. */
if (status != TX_SUCCESS)
break;
/* Release the mutex again. This will actually
release ownership since it was obtained twice. */
status = tx_mutex_put(&mutex_0);
/* Check status. */
if (status != TX_SUCCESS)
break;
}
}

204
ports_module/cortex-m3/ac6/example_build/sample_threadx/sample_threadx.launch Normal file
View File

@@ -0,0 +1,204 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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44
ports_module/cortex-m3/ac6/example_build/sample_threadx/sample_threadx.scat Normal file
View File

@@ -0,0 +1,44 @@
;*******************************************************
; Copyright (c) 2006-2017 Arm Limited (or its affiliates). All rights reserved.
; Use, modification and redistribution of this file is subject to your possession of a
; valid End User License Agreement for the Arm Product of which these examples are part of
; and your compliance with all applicable terms and conditions of such licence agreement.
;*******************************************************
; Scatter-file for Cortex-M3 bare-metal example
; This scatter-file places the vector table, application code, data, stacks and heap at suitable addresses in the memory map.
; The vector table is placed first at the start of the image.
; Code starts after the last entry in the vector table.
; Data is placed at an address that must correspond to RAM.
; Stack and Heap are placed using ARM_LIB_STACKHEAP, to eliminate the need to set stack-base or heap-base in the debugger.
; System Control Space registers appear at their architecturally-defined addresses, based at 0xE000E000.
LOAD_REGION 0x00000000
{
VECTORS +0 0xC0 ; 16 exceptions + up to 32 interrupts, 4 bytes each entry == 0xC0
{
exceptions.o (vectors, +FIRST) ; from exceptions.c
}
; Code is placed immediately (+0) after the previous root region
; (so code region will also be a root region)
CODE +0
{
* (+RO) ; All program code, including library code
}
DATA +0
{
* (+RW, +ZI) ; All RW and ZI data
}
; Heap grows upwards from start of this region and
; Stack grows downwards from end of this region
; The Main Stack Pointer is initialized on reset to the top addresses of this region
ARM_LIB_STACKHEAP +0 EMPTY 0x1000
{
}
}

231
ports_module/cortex-m3/ac6/example_build/sample_threadx/tx_initialize_low_level.S Normal file
View File

@@ -0,0 +1,231 @@
/**************************************************************************/
/* */
/* 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 */
/** */
/** Initialize */
/** */
/**************************************************************************/
/**************************************************************************/
.global _tx_thread_system_stack_ptr
.global _tx_initialize_unused_memory
.global _tx_timer_interrupt
.global __main
.global __tx_NMIHandler // NMI
.global __tx_BadHandler // HardFault
.global __tx_SVCallHandler // SVCall
.global __tx_DBGHandler // Monitor
.global __tx_PendSVHandler // PendSV
.global __tx_SysTickHandler // SysTick
.global __tx_IntHandler // Int 0
SYSTEM_CLOCK = 6000000
SYSTICK_CYCLES = ((SYSTEM_CLOCK / 100) -1)
.text 32
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_initialize_low_level Cortex-M3/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is responsible for any low-level processor */
/* initialization, including setting up interrupt vectors, setting */
/* up a periodic timer interrupt source, saving the system stack */
/* pointer for use in ISR processing later, and finding the first */
/* available RAM memory address for tx_application_define. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _tx_initialize_kernel_enter ThreadX entry function */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 William E. Lamie Initial Version 6.1 */
/* */
/**************************************************************************/
// VOID _tx_initialize_low_level(VOID)
// {
.global _tx_initialize_low_level
.thumb_func
_tx_initialize_low_level:
/* Disable interrupts during ThreadX initialization. */
CPSID i
/* Set base of available memory to end of non-initialised RAM area. */
LDR r0, =_tx_initialize_unused_memory // Build address of unused memory pointer
LDR r1, =Image$$ARM_LIB_STACKHEAP$$ZI$$Limit // Build first free address
ADD r1, r1, #4 //
STR r1, [r0] // Setup first unused memory pointer
/* Setup Vector Table Offset Register. */
MOV r0, #0xE000E000 // Build address of NVIC registers
LDR r1, =vector_table // Pickup address of vector table
STR r1, [r0, #0xD08] // Set vector table address
/* Set system stack pointer from vector value. */
LDR r0, =_tx_thread_system_stack_ptr // Build address of system stack pointer
LDR r1, =vector_table // Pickup address of vector table
LDR r1, [r1] // Pickup reset stack pointer
STR r1, [r0] // Save system stack pointer
/* Enable the cycle count register. */
LDR r0, =0xE0001000 // Build address of DWT register
LDR r1, [r0] // Pickup the current value
ORR r1, r1, #1 // Set the CYCCNTENA bit
STR r1, [r0] // Enable the cycle count register
/* Configure SysTick for 100Hz clock, or 16384 cycles if no reference. */
MOV r0, #0xE000E000 // Build address of NVIC registers
LDR r1, =SYSTICK_CYCLES
STR r1, [r0, #0x14] // Setup SysTick Reload Value
MOV r1, #0x7 // Build SysTick Control Enable Value
STR r1, [r0, #0x10] // Setup SysTick Control
/* Configure handler priorities. */
LDR r1, =0x00000000 // Rsrv, UsgF, BusF, MemM
STR r1, [r0, #0xD18] // Setup System Handlers 4-7 Priority Registers
LDR r1, =0xFF000000 // SVCl, Rsrv, Rsrv, Rsrv
STR r1, [r0, #0xD1C] // Setup System Handlers 8-11 Priority Registers
// Note: SVC must be lowest priority, which is 0xFF
LDR r1, =0x40FF0000 // SysT, PnSV, Rsrv, DbgM
STR r1, [r0, #0xD20] // Setup System Handlers 12-15 Priority Registers
// Note: PnSV must be lowest priority, which is 0xFF
/* Return to caller. */
BX lr
// }
/* Define shells for each of the unused vectors. */
.global __tx_BadHandler
.thumb_func
__tx_BadHandler:
B __tx_BadHandler
/* added to catch the hardfault */
.global __tx_HardfaultHandler
.thumb_func
__tx_HardfaultHandler:
B __tx_HardfaultHandler
/* Generic interrupt handler template */
.global __tx_IntHandler
.thumb_func
__tx_IntHandler:
// VOID InterruptHandler (VOID)
// {
PUSH {r0, lr}
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
BL _tx_execution_isr_enter // Call the ISR enter function
#endif
/* Do interrupt handler work here */
/* BL <your C Function>.... */
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
BL _tx_execution_isr_exit // Call the ISR exit function
#endif
POP {r0, lr}
BX LR
// }
/* System Tick timer interrupt handler */
.global __tx_SysTickHandler
.global SysTick_Handler
.thumb_func
__tx_SysTickHandler:
.thumb_func
SysTick_Handler:
// VOID TimerInterruptHandler (VOID)
// {
PUSH {r0, lr}
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
BL _tx_execution_isr_enter // Call the ISR enter function
#endif
BL _tx_timer_interrupt
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
BL _tx_execution_isr_exit // Call the ISR exit function
#endif
POP {r0, lr}
BX LR
// }
/* NMI, DBG handlers */
.global __tx_NMIHandler
.thumb_func
__tx_NMIHandler:
B __tx_NMIHandler
.global __tx_DBGHandler
.thumb_func
__tx_DBGHandler:
B __tx_DBGHandler
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
/* Execution change notify functions */
.global _tx_execution_isr_enter
.thumb_func
_tx_execution_isr_enter:
BX LR
#endif
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
/* Execution change notify functions */
.global _tx_execution_isr_exit
.thumb_func
_tx_execution_isr_exit:
BX LR
#endif

250
ports_module/cortex-m3/ac6/example_build/sample_threadx_module/.cproject Normal file
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28
ports_module/cortex-m3/ac6/example_build/sample_threadx_module/.project Normal file
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432
ports_module/cortex-m3/ac6/example_build/sample_threadx_module/sample_threadx_module.c Normal file
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@@ -0,0 +1,432 @@
/* This is a small demo of the high-performance ThreadX kernel running as a module. It includes
examples of eight threads of different priorities, using a message queue, semaphore, mutex,
event flags group, byte pool, and block pool. */
/* Specify that this is a module! */
#define TXM_MODULE
/* Include the ThreadX module definitions. */
#include "txm_module.h"
/* Define constants. */
#define DEMO_STACK_SIZE 1024
#define DEMO_BYTE_POOL_SIZE 9120
#define DEMO_BLOCK_POOL_SIZE 100
#define DEMO_QUEUE_SIZE 100
/* Define the external memory area. */
#define EXTERNAL_MEMORY_SIZE (64 * 1024)
#define EXTERNAL_MEMORY (0x80000)
/* Define the pool space in the bss section of the module. ULONG is used to
get the word alignment. */
ULONG demo_module_pool_space[DEMO_BYTE_POOL_SIZE / 4];
/* Define the ThreadX object control blocks... */
TX_THREAD *thread_0;
TX_THREAD *thread_1;
TX_THREAD *thread_2;
TX_THREAD *thread_3;
TX_THREAD *thread_4;
TX_THREAD *thread_5;
TX_THREAD *thread_6;
TX_THREAD *thread_7;
TX_QUEUE *queue_0;
TX_SEMAPHORE *semaphore_0;
TX_MUTEX *mutex_0;
TX_EVENT_FLAGS_GROUP *event_flags_0;
TX_BYTE_POOL *byte_pool_0;
TX_BLOCK_POOL *block_pool_0;
/* Define the counters used in the demo application... */
ULONG thread_0_counter;
ULONG thread_1_counter;
ULONG thread_1_messages_sent;
ULONG thread_2_counter;
ULONG thread_2_messages_received;
ULONG thread_3_counter;
ULONG thread_4_counter;
ULONG thread_5_counter;
ULONG thread_6_counter;
ULONG thread_7_counter;
ULONG semaphore_0_puts;
ULONG event_0_sets;
ULONG queue_0_sends;
/* Define thread prototypes. */
void thread_0_entry(ULONG thread_input);
void thread_1_entry(ULONG thread_input);
void thread_2_entry(ULONG thread_input);
void thread_3_and_4_entry(ULONG thread_input);
void thread_5_entry(ULONG thread_input);
void thread_6_and_7_entry(ULONG thread_input);
void semaphore_0_notify(TX_SEMAPHORE *semaphore_ptr)
{
if (semaphore_ptr == semaphore_0)
semaphore_0_puts++;
}
void event_0_notify(TX_EVENT_FLAGS_GROUP *event_flag_group_ptr)
{
if (event_flag_group_ptr == event_flags_0)
event_0_sets++;
}
void queue_0_notify(TX_QUEUE *queue_ptr)
{
if (queue_ptr == queue_0)
queue_0_sends++;
}
/* Define the module start function. */
void demo_module_start(ULONG id)
{
CHAR *pointer;
/* Allocate all the objects. In MPU mode, modules cannot allocate control blocks within
their own memory area so they cannot corrupt the resident portion of ThreadX by overwriting
the control block(s). */
txm_module_object_allocate((void*)&thread_0, sizeof(TX_THREAD));
txm_module_object_allocate((void*)&thread_1, sizeof(TX_THREAD));
txm_module_object_allocate((void*)&thread_2, sizeof(TX_THREAD));
txm_module_object_allocate((void*)&thread_3, sizeof(TX_THREAD));
txm_module_object_allocate((void*)&thread_4, sizeof(TX_THREAD));
txm_module_object_allocate((void*)&thread_5, sizeof(TX_THREAD));
txm_module_object_allocate((void*)&thread_6, sizeof(TX_THREAD));
txm_module_object_allocate((void*)&thread_7, sizeof(TX_THREAD));
txm_module_object_allocate((void*)&queue_0, sizeof(TX_QUEUE));
txm_module_object_allocate((void*)&semaphore_0, sizeof(TX_SEMAPHORE));
txm_module_object_allocate((void*)&mutex_0, sizeof(TX_MUTEX));
txm_module_object_allocate((void*)&event_flags_0, sizeof(TX_EVENT_FLAGS_GROUP));
txm_module_object_allocate((void*)&byte_pool_0, sizeof(TX_BYTE_POOL));
txm_module_object_allocate((void*)&block_pool_0, sizeof(TX_BLOCK_POOL));
/* Create a byte memory pool from which to allocate the thread stacks. */
tx_byte_pool_create(byte_pool_0, "module byte pool 0", demo_module_pool_space, DEMO_BYTE_POOL_SIZE);
/* Put system definition stuff in here, e.g. thread creates and other assorted
create information. */
/* Allocate the stack for thread 0. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create the main thread. */
tx_thread_create(thread_0, "module thread 0", thread_0_entry, 0,
pointer, DEMO_STACK_SIZE,
1, 1, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 1. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create threads 1 and 2. These threads pass information through a ThreadX
message queue. It is also interesting to note that these threads have a time
slice. */
tx_thread_create(thread_1, "module thread 1", thread_1_entry, 1,
pointer, DEMO_STACK_SIZE,
16, 16, 4, TX_AUTO_START);
/* Allocate the stack for thread 2. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
tx_thread_create(thread_2, "module thread 2", thread_2_entry, 2,
pointer, DEMO_STACK_SIZE,
16, 16, 4, TX_AUTO_START);
/* Allocate the stack for thread 3. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create threads 3 and 4. These threads compete for a ThreadX counting semaphore.
An interesting thing here is that both threads share the same instruction area. */
tx_thread_create(thread_3, "module thread 3", thread_3_and_4_entry, 3,
pointer, DEMO_STACK_SIZE,
8, 8, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 4. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
tx_thread_create(thread_4, "module thread 4", thread_3_and_4_entry, 4,
pointer, DEMO_STACK_SIZE,
8, 8, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 5. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create thread 5. This thread simply pends on an event flag which will be set
by thread_0. */
tx_thread_create(thread_5, "module thread 5", thread_5_entry, 5,
pointer, DEMO_STACK_SIZE,
4, 4, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 6. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
/* Create threads 6 and 7. These threads compete for a ThreadX mutex. */
tx_thread_create(thread_6, "module thread 6", thread_6_and_7_entry, 6,
pointer, DEMO_STACK_SIZE,
8, 8, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the stack for thread 7. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_STACK_SIZE, TX_NO_WAIT);
tx_thread_create(thread_7, "module thread 7", thread_6_and_7_entry, 7,
pointer, DEMO_STACK_SIZE,
8, 8, TX_NO_TIME_SLICE, TX_AUTO_START);
/* Allocate the message queue. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_QUEUE_SIZE*sizeof(ULONG), TX_NO_WAIT);
/* Create the message queue shared by threads 1 and 2. */
tx_queue_create(queue_0, "module queue 0", TX_1_ULONG, pointer, DEMO_QUEUE_SIZE*sizeof(ULONG));
tx_queue_send_notify(queue_0, queue_0_notify);
/* Create the semaphore used by threads 3 and 4. */
tx_semaphore_create(semaphore_0, "module semaphore 0", 1);
tx_semaphore_put_notify(semaphore_0, semaphore_0_notify);
/* Create the event flags group used by threads 1 and 5. */
tx_event_flags_create(event_flags_0, "module event flags 0");
tx_event_flags_set_notify(event_flags_0, event_0_notify);
/* Create the mutex used by thread 6 and 7 without priority inheritance. */
tx_mutex_create(mutex_0, "module mutex 0", TX_NO_INHERIT);
/* Allocate the memory for a small block pool. */
tx_byte_allocate(byte_pool_0, (VOID **) &pointer, DEMO_BLOCK_POOL_SIZE, TX_NO_WAIT);
/* Create a block memory pool to allocate a message buffer from. */
tx_block_pool_create(block_pool_0, "module block pool 0", sizeof(ULONG), pointer, DEMO_BLOCK_POOL_SIZE);
/* Allocate a block and release the block memory. */
tx_block_allocate(block_pool_0, (VOID **) &pointer, TX_NO_WAIT);
/* Release the block back to the pool. */
tx_block_release(pointer);
}
/* Define the test threads. */
void thread_0_entry(ULONG thread_input)
{
UINT status;
/* This thread simply sits in while-forever-sleep loop. */
while(1)
{
/* Increment the thread counter. */
thread_0_counter++;
/* Sleep for 10 ticks. */
tx_thread_sleep(10);
/* Set event flag 0 to wakeup thread 5. */
status = tx_event_flags_set(event_flags_0, 0x1, TX_OR);
/* Check status. */
if (status != TX_SUCCESS)
break;
}
}
void thread_1_entry(ULONG thread_input)
{
UINT status;
/* This thread simply sends messages to a queue shared by thread 2. */
while(1)
{
/* Increment the thread counter. */
thread_1_counter++;
/* Send message to queue 0. */
status = tx_queue_send(queue_0, &thread_1_messages_sent, TX_WAIT_FOREVER);
/* Check completion status. */
if (status != TX_SUCCESS)
break;
/* Increment the message sent. */
thread_1_messages_sent++;
}
}
void thread_2_entry(ULONG thread_input)
{
ULONG received_message;
UINT status;
/* This thread retrieves messages placed on the queue by thread 1. */
while(1)
{
/* Test external memory sharing. */
*(ULONG *)EXTERNAL_MEMORY = 0xABABABAB;
/* Increment the thread counter. */
thread_2_counter++;
/* Retrieve a message from the queue. */
status = tx_queue_receive(queue_0, &received_message, TX_WAIT_FOREVER);
/* Check completion status and make sure the message is what we
expected. */
if ((status != TX_SUCCESS) || (received_message != thread_2_messages_received))
break;
/* Otherwise, all is okay. Increment the received message count. */
thread_2_messages_received++;
}
}
void thread_3_and_4_entry(ULONG thread_input)
{
UINT status;
/* This function is executed from thread 3 and thread 4. As the loop
below shows, these function compete for ownership of semaphore_0. */
while(1)
{
/* Increment the thread counter. */
if (thread_input == 3)
thread_3_counter++;
else
thread_4_counter++;
/* Get the semaphore with suspension. */
status = tx_semaphore_get(semaphore_0, TX_WAIT_FOREVER);
/* Check status. */
if (status != TX_SUCCESS)
break;
/* Sleep for 2 ticks to hold the semaphore. */
tx_thread_sleep(2);
/* Release the semaphore. */
status = tx_semaphore_put(semaphore_0);
/* Check status. */
if (status != TX_SUCCESS)
break;
}
}
void thread_5_entry(ULONG thread_input)
{
UINT status;
ULONG actual_flags;
/* This thread simply waits for an event in a forever loop. */
while(1)
{
/* Increment the thread counter. */
thread_5_counter++;
/* Wait for event flag 0. */
status = tx_event_flags_get(event_flags_0, 0x1, TX_OR_CLEAR,
&actual_flags, TX_WAIT_FOREVER);
/* Check status. */
if ((status != TX_SUCCESS) || (actual_flags != 0x1))
break;
}
}
void thread_6_and_7_entry(ULONG thread_input)
{
UINT status;
/* This function is executed from thread 6 and thread 7. As the loop
below shows, these function compete for ownership of mutex_0. */
while(1)
{
/* Increment the thread counter. */
if (thread_input == 6)
thread_6_counter++;
else
thread_7_counter++;
/* Get the mutex with suspension. */
status = tx_mutex_get(mutex_0, TX_WAIT_FOREVER);
/* Check status. */
if (status != TX_SUCCESS)
break;
/* Get the mutex again with suspension. This shows
that an owning thread may retrieve the mutex it
owns multiple times. */
status = tx_mutex_get(mutex_0, TX_WAIT_FOREVER);
/* Check status. */
if (status != TX_SUCCESS)
break;
/* Sleep for 2 ticks to hold the mutex. */
tx_thread_sleep(2);
/* Release the mutex. */
status = tx_mutex_put(mutex_0);
/* Check status. */
if (status != TX_SUCCESS)
break;
/* Release the mutex again. This will actually
release ownership since it was obtained twice. */
status = tx_mutex_put(mutex_0);
/* Check status. */
if (status != TX_SUCCESS)
break;
}
}

62
ports_module/cortex-m3/ac6/example_build/sample_threadx_module/txm_module_preamble.S Normal file
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@@ -0,0 +1,62 @@
.text
.align 4
.syntax unified
.section Init
// Define public symbols
.global __txm_module_preamble
// Define application-specific start/stop entry points for the module
.global demo_module_start
// Define common external references
.global _txm_module_thread_shell_entry
.global _txm_module_callback_request_thread_entry
.eabi_attribute Tag_ABI_PCS_RO_data, 1
.eabi_attribute Tag_ABI_PCS_R9_use, 1
.eabi_attribute Tag_ABI_PCS_RW_data, 2
__txm_module_preamble:
.dc.l 0x4D4F4455 // Module ID
.dc.l 0x6 // Module Major Version
.dc.l 0x1 // Module Minor Version
.dc.l 32 // Module Preamble Size in 32-bit words
.dc.l 0x12345678 // Module ID (application defined)
.dc.l 0x01000007 // Module Properties where:
// Bits 31-24: Compiler ID
// 0 -> IAR
// 1 -> ARM
// 2 -> GNU
// Bit 0: 0 -> Privileged mode execution
// 1 -> User mode execution
// Bit 1: 0 -> No MPU protection
// 1 -> MPU protection (must have user mode selected)
// Bit 2: 0 -> Disable shared/external memory access
// 1 -> Enable shared/external memory access
.dc.l _txm_module_thread_shell_entry - __txm_module_preamble // Module Shell Entry Point
.dc.l demo_module_start - __txm_module_preamble // Module Start Thread Entry Point
.dc.l 0 // Module Stop Thread Entry Point
.dc.l 1 // Module Start/Stop Thread Priority
.dc.l 1024 // Module Start/Stop Thread Stack Size
.dc.l _txm_module_callback_request_thread_entry - __txm_module_preamble // Module Callback Thread Entry
.dc.l 1 // Module Callback Thread Priority
.dc.l 1024 // Module Callback Thread Stack Size
.dc.l 0x10000 // Module Code Size
.dc.l 0x10000 // Module Data Size
.dc.l 0 // Reserved 0
.dc.l 0 // Reserved 1
.dc.l 0 // Reserved 2
.dc.l 0 // Reserved 3
.dc.l 0 // Reserved 4
.dc.l 0 // Reserved 5
.dc.l 0 // Reserved 6
.dc.l 0 // Reserved 7
.dc.l 0 // Reserved 8
.dc.l 0 // Reserved 9
.dc.l 0 // Reserved 10
.dc.l 0 // Reserved 11
.dc.l 0 // Reserved 12
.dc.l 0 // Reserved 13
.dc.l 0 // Reserved 14
.dc.l 0 // Reserved 15

196
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/.cproject Normal file
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29
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/.project Normal file
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@@ -0,0 +1,29 @@
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<comment></comment>
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93
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/exceptions.c Normal file
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@@ -0,0 +1,93 @@
/*
** Copyright (c) 2006-2017 Arm Limited (or its affiliates). All rights reserved.
** Use, modification and redistribution of this file is subject to your possession of a
** valid End User License Agreement for the Arm Product of which these examples are part of
** and your compliance with all applicable terms and conditions of such licence agreement.
*/
/* This file contains the default exception handlers and vector table.
All exceptions are handled in Handler mode. Processor state is automatically
pushed onto the stack when an exception occurs, and popped from the stack at
the end of the handler */
/* Exception Handlers */
/* Marking as __attribute__((interrupt)) avoids them being accidentally called from elsewhere */
__attribute__((interrupt)) void NMIException(void)
{ while(1); }
__attribute__((interrupt)) void HardFaultException(void)
{ while(1); }
void MemManage_Handler(void);
void BusFault_Handler(void);
void UsageFault_Handler(void);
void __tx_SVCallHandler(void);
__attribute__((interrupt)) void DebugMonitor(void)
{ while(1); }
void __tx_PendSVHandler(void);
void __tx_SysTickHandler(void);
__attribute__((interrupt)) void InterruptHandler(void)
{ while(1); }
/* typedef for the function pointers in the vector table */
typedef void(* const ExecFuncPtr)(void) __attribute__((interrupt));
/* Linker-generated Stack Base address */
#ifdef TWO_REGION
extern unsigned int Image$$ARM_LIB_STACK$$ZI$$Limit; /* for Two Region model */
#else
extern unsigned int Image$$ARM_LIB_STACKHEAP$$ZI$$Limit; /* for (default) One Region model */
#endif
/* Entry point for C run-time initialization */
extern int __main(void);
/* Vector table
Create a named ELF section for the vector table that can be placed in a scatter file.
The first two entries are:
Initial SP = |Image$$ARM_LIB_STACKHEAP$$ZI$$Limit| for (default) One Region model
or |Image$$ARM_LIB_STACK$$ZI$$Limit| for Two Region model
Initial PC= &__main (with LSB set to indicate Thumb)
*/
ExecFuncPtr vector_table[] __attribute__((section("vectors"))) = {
/* Configure Initial Stack Pointer using linker-generated symbol */
#ifdef TWO_REGION
#pragma import(__use_two_region_memory)
(ExecFuncPtr)&Image$$ARM_LIB_STACK$$ZI$$Limit,
#else /* (default) One Region model */
(ExecFuncPtr)&Image$$ARM_LIB_STACKHEAP$$ZI$$Limit,
#endif
(ExecFuncPtr)__main, /* Initial PC, set to entry point */
NMIException,
HardFaultException,
MemManage_Handler,
BusFault_Handler,
UsageFault_Handler,
0, 0, 0, 0, /* Reserved */
__tx_SVCallHandler,
DebugMonitor,
0, /* Reserved */
__tx_PendSVHandler,
__tx_SysTickHandler,
/* Add up to 240 interrupt handlers, starting here... */
InterruptHandler,
InterruptHandler, /* Some dummy interrupt handlers */
InterruptHandler
/*
:
*/
};

44
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/sample_threadx.scat Normal file
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@@ -0,0 +1,44 @@
;*******************************************************
; Copyright (c) 2006-2017 Arm Limited (or its affiliates). All rights reserved.
; Use, modification and redistribution of this file is subject to your possession of a
; valid End User License Agreement for the Arm Product of which these examples are part of
; and your compliance with all applicable terms and conditions of such licence agreement.
;*******************************************************
; Scatter-file for Cortex-M3 bare-metal example
; This scatter-file places the vector table, application code, data, stacks and heap at suitable addresses in the memory map.
; The vector table is placed first at the start of the image.
; Code starts after the last entry in the vector table.
; Data is placed at an address that must correspond to RAM.
; Stack and Heap are placed using ARM_LIB_STACKHEAP, to eliminate the need to set stack-base or heap-base in the debugger.
; System Control Space registers appear at their architecturally-defined addresses, based at 0xE000E000.
LOAD_REGION 0x00000000
{
VECTORS +0 0xC0 ; 16 exceptions + up to 32 interrupts, 4 bytes each entry == 0xC0
{
exceptions.o (vectors, +FIRST) ; from exceptions.c
}
; Code is placed immediately (+0) after the previous root region
; (so code region will also be a root region)
CODE +0
{
* (+RO) ; All program code, including library code
}
DATA +0
{
* (+RW, +ZI) ; All RW and ZI data
}
; Heap grows upwards from start of this region and
; Stack grows downwards from end of this region
; The Main Stack Pointer is initialized on reset to the top addresses of this region
ARM_LIB_STACKHEAP +0 EMPTY 0x1000
{
}
}

126
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/sample_threadx_module_manager.c Normal file
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/* Small demonstration of the ThreadX module manager. */
#include "tx_api.h"
#include "txm_module.h"
#define DEMO_STACK_SIZE 1024
/* Define the ThreadX object control blocks... */
TX_THREAD module_manager;
TXM_MODULE_INSTANCE my_module;
/* Define the object pool area. */
UCHAR object_memory[16384];
/* Define the module data pool area. */
#define MODULE_DATA_SIZE (256 * 1024)
#define MODULE_DATA (0x40000)
/* The module code should be loaded here. */
#define MODULE_CODE (0x30000)
/* Define the external memory area. */
#define EXTERNAL_MEMORY_SIZE (64 * 1024)
#define EXTERNAL_MEMORY (0x80000)
/* Define the count of memory faults. */
ULONG memory_faults;
/* Define thread prototypes. */
void module_manager_entry(ULONG thread_input);
/* Define fault handler. */
VOID module_fault_handler(TX_THREAD *thread, TXM_MODULE_INSTANCE *module)
{
/* Just increment the fault counter. */
memory_faults++;
}
/* Define main entry point. */
int main()
{
/* Enter the ThreadX kernel. */
tx_kernel_enter();
}
/* Define what the initial system looks like. */
void tx_application_define(void *first_unused_memory)
{
CHAR *pointer = (CHAR*)first_unused_memory;
tx_thread_create(&module_manager, "Module Manager Thread", module_manager_entry, 0,
pointer, DEMO_STACK_SIZE,
1, 1, TX_NO_TIME_SLICE, TX_AUTO_START);
pointer = pointer + DEMO_STACK_SIZE;
}
/* Define the test threads. */
void module_manager_entry(ULONG thread_input)
{
/* Initialize the module manager. */
txm_module_manager_initialize((void *) MODULE_DATA, MODULE_DATA_SIZE);
txm_module_manager_object_pool_create(object_memory, sizeof(object_memory));
/* Register a fault handler. */
txm_module_manager_memory_fault_notify(module_fault_handler);
/* Load the module that is already there, in this example it is placed there by the multiple image download. */
txm_module_manager_in_place_load(&my_module, "my module", (void *) MODULE_CODE);
/* Enable a read/write shared memory region. */
txm_module_manager_external_memory_enable(&my_module, (void *) EXTERNAL_MEMORY, EXTERNAL_MEMORY_SIZE, TXM_MODULE_MANAGER_SHARED_ATTRIBUTE_WRITE);
/* Start the module. */
txm_module_manager_start(&my_module);
/* Sleep for a while.... */
tx_thread_sleep(1000);
/* Stop the module. */
txm_module_manager_stop(&my_module);
/* Unload the module. */
txm_module_manager_unload(&my_module);
/* Load the module that is already there. */
txm_module_manager_in_place_load(&my_module, "my module", (void *) MODULE_CODE);
/* Start the module again. */
txm_module_manager_start(&my_module);
/* Now just spin... */
while(1)
{
tx_thread_sleep(100);
}
}

3
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/sample_threadx_module_manager.ds Normal file
View File

@@ -0,0 +1,3 @@
wait
load ..\sample_threadx_module\Debug\sample_threadx_module.axf
wait

226
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/sample_threadx_module_manager.launch Normal file
View File

@@ -0,0 +1,226 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<stringAttribute key="debugger.view.symbols.FunctionsView:DebugOutlineColumnState" value="OutlineConfig1&#9;8&#9;0&#9;true&#9;true&#9;400&#9;1&#9;true&#9;1&#9;false&#9;true&#9;103&#9;-1&#9;true&#9;2&#9;false&#9;true&#9;90&#9;-1&#9;true&#9;3&#9;true&#9;true&#9;90&#9;0&#9;true&#9;4&#9;true&#9;true&#9;86&#9;-1&#9;true&#9;5&#9;false&#9;true&#9;41&#9;-1&#9;true&#9;6&#9;true&#9;true&#9;400&#9;-1&#9;true&#9;7&#9;true&#9;true&#9;400&#9;-1&#9;true"/>
<stringAttribute key="dtsl_config" value="DtslScript"/>
<stringAttribute key="dtsl_config_script" value="CDB://dtsl_config_script.py"/>
<stringAttribute key="dtsl_options_file" value="default"/>
<stringAttribute key="dtsl_tracecapture_option" value="options.traceBuffer.traceCaptureDevice"/>
<stringAttribute key="launch_configuration_version" value="2020.0"/>
<booleanAttribute key="linuxOS" value="false"/>
<stringAttribute key="model_params" value=""/>
<stringAttribute key="os_extension_id" value="com.arm.debug.os.threadx"/>
<booleanAttribute key="runAfterConnect" value="false"/>
<stringAttribute key="runScriptAfterConnect" value="${workspace_loc:/sample_threadx_module_manager/sample_threadx_module_manager_debug.ds}"/>
<stringAttribute key="runTargetInitializationScript" value="${workspace_loc:/sample_threadx_module_manager/sample_threadx_module_manager.ds}"/>
<listAttribute key="setup">
<listEntry value="CDB://Scripts/rtsm_launcher.py"/>
<listEntry value="&quot;FVP_MPS2_Cortex-M3&quot;"/>
</listAttribute>
<booleanAttribute key="single_platform" value="true"/>
<stringAttribute key="stopAtExpression" value="main"/>
<stringAttribute key="watchpoints" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;&#10;&lt;watchpoints&gt;&#10;&lt;/watchpoints&gt;&#10;"/>
</launchConfiguration>

3
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/sample_threadx_module_manager_debug.ds Normal file
View File

@@ -0,0 +1,3 @@
wait
add-symbol-file ..\sample_threadx_module\Debug\sample_threadx_module.axf
wait

231
ports_module/cortex-m3/ac6/example_build/sample_threadx_module_manager/tx_initialize_low_level.S Normal file
View File

@@ -0,0 +1,231 @@
/**************************************************************************/
/* */
/* 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 */
/** */
/** Initialize */
/** */
/**************************************************************************/
/**************************************************************************/
.global _tx_thread_system_stack_ptr
.global _tx_initialize_unused_memory
.global _tx_timer_interrupt
.global __main
.global __tx_NMIHandler // NMI
.global __tx_BadHandler // HardFault
.global __tx_SVCallHandler // SVCall
.global __tx_DBGHandler // Monitor
.global __tx_PendSVHandler // PendSV
.global __tx_SysTickHandler // SysTick
.global __tx_IntHandler // Int 0
SYSTEM_CLOCK = 6000000
SYSTICK_CYCLES = ((SYSTEM_CLOCK / 100) -1)
.text 32
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_initialize_low_level Cortex-M3/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is responsible for any low-level processor */
/* initialization, including setting up interrupt vectors, setting */
/* up a periodic timer interrupt source, saving the system stack */
/* pointer for use in ISR processing later, and finding the first */
/* available RAM memory address for tx_application_define. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _tx_initialize_kernel_enter ThreadX entry function */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 William E. Lamie Initial Version 6.1 */
/* */
/**************************************************************************/
// VOID _tx_initialize_low_level(VOID)
// {
.global _tx_initialize_low_level
.thumb_func
_tx_initialize_low_level:
/* Disable interrupts during ThreadX initialization. */
CPSID i
/* Set base of available memory to end of non-initialised RAM area. */
LDR r0, =_tx_initialize_unused_memory // Build address of unused memory pointer
LDR r1, =Image$$ARM_LIB_STACKHEAP$$ZI$$Limit // Build first free address
ADD r1, r1, #4 //
STR r1, [r0] // Setup first unused memory pointer
/* Setup Vector Table Offset Register. */
MOV r0, #0xE000E000 // Build address of NVIC registers
LDR r1, =vector_table // Pickup address of vector table
STR r1, [r0, #0xD08] // Set vector table address
/* Set system stack pointer from vector value. */
LDR r0, =_tx_thread_system_stack_ptr // Build address of system stack pointer
LDR r1, =vector_table // Pickup address of vector table
LDR r1, [r1] // Pickup reset stack pointer
STR r1, [r0] // Save system stack pointer
/* Enable the cycle count register. */
LDR r0, =0xE0001000 // Build address of DWT register
LDR r1, [r0] // Pickup the current value
ORR r1, r1, #1 // Set the CYCCNTENA bit
STR r1, [r0] // Enable the cycle count register
/* Configure SysTick for 100Hz clock, or 16384 cycles if no reference. */
MOV r0, #0xE000E000 // Build address of NVIC registers
LDR r1, =SYSTICK_CYCLES
STR r1, [r0, #0x14] // Setup SysTick Reload Value
MOV r1, #0x7 // Build SysTick Control Enable Value
STR r1, [r0, #0x10] // Setup SysTick Control
/* Configure handler priorities. */
LDR r1, =0x00000000 // Rsrv, UsgF, BusF, MemM
STR r1, [r0, #0xD18] // Setup System Handlers 4-7 Priority Registers
LDR r1, =0xFF000000 // SVCl, Rsrv, Rsrv, Rsrv
STR r1, [r0, #0xD1C] // Setup System Handlers 8-11 Priority Registers
// Note: SVC must be lowest priority, which is 0xFF
LDR r1, =0x40FF0000 // SysT, PnSV, Rsrv, DbgM
STR r1, [r0, #0xD20] // Setup System Handlers 12-15 Priority Registers
// Note: PnSV must be lowest priority, which is 0xFF
/* Return to caller. */
BX lr
// }
/* Define shells for each of the unused vectors. */
.global __tx_BadHandler
.thumb_func
__tx_BadHandler:
B __tx_BadHandler
/* added to catch the hardfault */
.global __tx_HardfaultHandler
.thumb_func
__tx_HardfaultHandler:
B __tx_HardfaultHandler
/* Generic interrupt handler template */
.global __tx_IntHandler
.thumb_func
__tx_IntHandler:
// VOID InterruptHandler (VOID)
// {
PUSH {r0, lr}
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
BL _tx_execution_isr_enter // Call the ISR enter function
#endif
/* Do interrupt handler work here */
/* BL <your C Function>.... */
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
BL _tx_execution_isr_exit // Call the ISR exit function
#endif
POP {r0, lr}
BX LR
// }
/* System Tick timer interrupt handler */
.global __tx_SysTickHandler
.global SysTick_Handler
.thumb_func
__tx_SysTickHandler:
.thumb_func
SysTick_Handler:
// VOID TimerInterruptHandler (VOID)
// {
PUSH {r0, lr}
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
BL _tx_execution_isr_enter // Call the ISR enter function
#endif
BL _tx_timer_interrupt
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
BL _tx_execution_isr_exit // Call the ISR exit function
#endif
POP {r0, lr}
BX LR
// }
/* NMI, DBG handlers */
.global __tx_NMIHandler
.thumb_func
__tx_NMIHandler:
B __tx_NMIHandler
.global __tx_DBGHandler
.thumb_func
__tx_DBGHandler:
B __tx_DBGHandler
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
/* Execution change notify functions */
.global _tx_execution_isr_enter
.thumb_func
_tx_execution_isr_enter:
BX LR
#endif
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
/* Execution change notify functions */
.global _tx_execution_isr_exit
.thumb_func
_tx_execution_isr_exit:
BX LR
#endif

16
ports_module/cortex-m3/ac6/example_build/setenv.bat Normal file
View File

@@ -0,0 +1,16 @@
@ECHO OFF
SET ARMDSDIR="C:\Program Files\Arm\Development Studio 2020.0"
IF EXIST %ARMDSDIR% GOTO FOUND_ARMDS
ECHO ARM Development Studio not found.
EXIT /B 1
:FOUND_ARMDS
SET ARMDSIDEC=%ARMDSDIR%\bin\armds_idec.exe
IF EXIST %ARMDSIDEC% GOTO FOUND_ARMDS_IDEC
ECHO armds_idec.exe not found.
EXIT /B 1
:FOUND_ARMDS_IDEC
ECHO armds_idec.exe found at %ARMDSIDEC%
EXIT /B 0

162
ports_module/cortex-m3/ac6/example_build/tx/.cproject Normal file
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@@ -0,0 +1,162 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<externalSetting>
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63
ports_module/cortex-m3/ac6/example_build/tx/.project Normal file
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@@ -0,0 +1,63 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>tx</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
<triggers>clean,full,incremental,</triggers>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
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<triggers>full,incremental,</triggers>
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<linkedResources>
<link>
<name>inc_generic</name>
<type>2</type>
<locationURI>$%7BPARENT-5-PROJECT_LOC%7D/common/inc</locationURI>
</link>
<link>
<name>inc_generic_module_manager</name>
<type>2</type>
<locationURI>$%7BPARENT-5-PROJECT_LOC%7D/common_modules/module_manager/inc</locationURI>
</link>
<link>
<name>inc_generic_modules</name>
<type>2</type>
<locationURI>$%7BPARENT-5-PROJECT_LOC%7D/common_modules/inc</locationURI>
</link>
<link>
<name>inc_port</name>
<type>2</type>
<locationURI>$%7BPARENT-2-PROJECT_LOC%7D/inc</locationURI>
</link>
<link>
<name>src_generic</name>
<type>2</type>
<locationURI>$%7BPARENT-5-PROJECT_LOC%7D/common/src</locationURI>
</link>
<link>
<name>src_generic_module_manager</name>
<type>2</type>
<locationURI>$%7BPARENT-5-PROJECT_LOC%7D/common_modules/module_manager/src</locationURI>
</link>
<link>
<name>src_port_module_manager</name>
<type>2</type>
<locationURI>$%7BPARENT-2-PROJECT_LOC%7D/module_manager/src</locationURI>
</link>
</linkedResources>
</projectDescription>

184
ports_module/cortex-m3/ac6/example_build/txm/.cproject Normal file
View File

@@ -0,0 +1,184 @@
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<externalSetting>
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<entry flags="VALUE_WORKSPACE_PATH" kind="includePath" name="/txm"/>
<entry flags="VALUE_WORKSPACE_PATH" kind="libraryPath" name="/tx/Debug"/>
<entry flags="VALUE_WORKSPACE_PATH" kind="libraryPath" name="/txm/Debug"/>
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58
ports_module/cortex-m3/ac6/example_build/txm/.project Normal file
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<?xml version="1.0" encoding="UTF-8"?>
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<comment></comment>
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<link>
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378
ports_module/cortex-m3/ac6/inc/tx_port.h Normal file
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/**************************************************************************/
/* */
/* 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 */
/** */
/** Port Specific */
/** */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/* */
/* PORT SPECIFIC C INFORMATION RELEASE */
/* */
/* tx_port.h Cortex-M3/AC6 */
/* 6.1 */
/* */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This file contains data type definitions that make the ThreadX */
/* real-time kernel function identically on a variety of different */
/* processor architectures. For example, the size or number of bits */
/* in an "int" data type vary between microprocessor architectures and */
/* even C compilers for the same microprocessor. ThreadX does not */
/* directly use native C data types. Instead, ThreadX creates its */
/* own special types that can be mapped to actual data types by this */
/* file to guarantee consistency in the interface and functionality. */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 William E. Lamie Initial Version 6.1 */
/* */
/**************************************************************************/
#ifndef TX_PORT_H
#define TX_PORT_H
/* Determine if the optional ThreadX user define file should be used. */
#ifdef TX_INCLUDE_USER_DEFINE_FILE
/* Yes, include the user defines in tx_user.h. The defines in this file may
alternately be defined on the command line. */
#include "tx_user.h"
#endif
/* Define compiler library include files. */
#include <stdlib.h>
#include <string.h>
/* Define ThreadX basic types for this port. */
#define VOID void
typedef char CHAR;
typedef unsigned char UCHAR;
typedef int INT;
typedef unsigned int UINT;
typedef long LONG;
typedef unsigned long ULONG;
typedef short SHORT;
typedef unsigned short USHORT;
/* Define the priority levels for ThreadX. Legal values range
from 32 to 1024 and MUST be evenly divisible by 32. */
#ifndef TX_MAX_PRIORITIES
#define TX_MAX_PRIORITIES 32
#endif
/* Define the minimum stack for a ThreadX thread on this processor. If the size supplied during
thread creation is less than this value, the thread create call will return an error. */
#ifndef TX_MINIMUM_STACK
#define TX_MINIMUM_STACK 200 /* Minimum stack size for this port */
#endif
/* Define the system timer thread's default stack size and priority. These are only applicable
if TX_TIMER_PROCESS_IN_ISR is not defined. */
#ifndef TX_TIMER_THREAD_STACK_SIZE
#define TX_TIMER_THREAD_STACK_SIZE 1024 /* Default timer thread stack size */
#endif
#ifndef TX_TIMER_THREAD_PRIORITY
#define TX_TIMER_THREAD_PRIORITY 0 /* Default timer thread priority */
#endif
/* Define various constants for the ThreadX Cortex-M3 port. */
#define TX_INT_DISABLE 1 /* Disable interrupts */
#define TX_INT_ENABLE 0 /* Enable interrupts */
/* Define the clock source for trace event entry time stamp. The following two item are port specific.
For example, if the time source is at the address 0x0a800024 and is 16-bits in size, the clock
source constants would be:
#define TX_TRACE_TIME_SOURCE *((ULONG *) 0x0a800024)
#define TX_TRACE_TIME_MASK 0x0000FFFFUL
*/
#ifndef TX_TRACE_TIME_SOURCE
#define TX_TRACE_TIME_SOURCE *((ULONG *) 0xE0001004)
#endif
#ifndef TX_TRACE_TIME_MASK
#define TX_TRACE_TIME_MASK 0xFFFFFFFFUL
#endif
/* Define the port specific options for the _tx_build_options variable. This variable indicates
how the ThreadX library was built. */
#define TX_PORT_SPECIFIC_BUILD_OPTIONS 0
/* Define the in-line initialization constant so that modules with in-line
initialization capabilities can prevent their initialization from being
a function call. */
#define TX_INLINE_INITIALIZATION
/* Determine whether or not stack checking is enabled. By default, ThreadX stack checking is
disabled. When the following is defined, ThreadX thread stack checking is enabled. If stack
checking is enabled (TX_ENABLE_STACK_CHECKING is defined), the TX_DISABLE_STACK_FILLING
define is negated, thereby forcing the stack fill which is necessary for the stack checking
logic. */
#ifdef TX_ENABLE_STACK_CHECKING
#undef TX_DISABLE_STACK_FILLING
#endif
/* Define the TX_THREAD control block extensions for this port. The main reason
for the multiple macros is so that backward compatibility can be maintained with
existing ThreadX kernel awareness modules. */
#define TX_THREAD_EXTENSION_0
#define TX_THREAD_EXTENSION_1
#define TX_THREAD_EXTENSION_2 VOID *tx_thread_module_instance_ptr; \
VOID *tx_thread_module_entry_info_ptr; \
ULONG tx_thread_module_current_user_mode; \
ULONG tx_thread_module_user_mode; \
ULONG tx_thread_module_saved_lr; \
VOID *tx_thread_module_kernel_stack_start; \
VOID *tx_thread_module_kernel_stack_end; \
ULONG tx_thread_module_kernel_stack_size; \
VOID *tx_thread_module_stack_ptr; \
VOID *tx_thread_module_stack_start; \
VOID *tx_thread_module_stack_end; \
ULONG tx_thread_module_stack_size; \
VOID *tx_thread_module_reserved;
#define TX_THREAD_EXTENSION_3
/* Define the port extensions of the remaining ThreadX objects. */
#define TX_BLOCK_POOL_EXTENSION
#define TX_BYTE_POOL_EXTENSION
#define TX_MUTEX_EXTENSION
#define TX_EVENT_FLAGS_GROUP_EXTENSION VOID *tx_event_flags_group_module_instance; \
VOID (*tx_event_flags_group_set_module_notify)(struct TX_EVENT_FLAGS_GROUP_STRUCT *group_ptr);
#define TX_QUEUE_EXTENSION VOID *tx_queue_module_instance; \
VOID (*tx_queue_send_module_notify)(struct TX_QUEUE_STRUCT *queue_ptr);
#define TX_SEMAPHORE_EXTENSION VOID *tx_semaphore_module_instance; \
VOID (*tx_semaphore_put_module_notify)(struct TX_SEMAPHORE_STRUCT *semaphore_ptr);
#define TX_TIMER_EXTENSION VOID *tx_timer_module_instance; \
VOID (*tx_timer_module_expiration_function)(ULONG id);
/* Define the user extension field of the thread control block. Nothing
additional is needed for this port so it is defined as white space. */
#ifndef TX_THREAD_USER_EXTENSION
#define TX_THREAD_USER_EXTENSION
#endif
/* Define the macros for processing extensions in tx_thread_create, tx_thread_delete,
tx_thread_shell_entry, and tx_thread_terminate. */
#define TX_THREAD_CREATE_EXTENSION(thread_ptr)
#define TX_THREAD_DELETE_EXTENSION(thread_ptr)
#define TX_THREAD_COMPLETED_EXTENSION(thread_ptr)
#define TX_THREAD_TERMINATED_EXTENSION(thread_ptr)
/* Define the ThreadX object creation extensions for the remaining objects. */
#define TX_BLOCK_POOL_CREATE_EXTENSION(pool_ptr)
#define TX_BYTE_POOL_CREATE_EXTENSION(pool_ptr)
#define TX_EVENT_FLAGS_GROUP_CREATE_EXTENSION(group_ptr)
#define TX_MUTEX_CREATE_EXTENSION(mutex_ptr)
#define TX_QUEUE_CREATE_EXTENSION(queue_ptr)
#define TX_SEMAPHORE_CREATE_EXTENSION(semaphore_ptr)
#define TX_TIMER_CREATE_EXTENSION(timer_ptr)
/* Define the ThreadX object deletion extensions for the remaining objects. */
#define TX_BLOCK_POOL_DELETE_EXTENSION(pool_ptr)
#define TX_BYTE_POOL_DELETE_EXTENSION(pool_ptr)
#define TX_EVENT_FLAGS_GROUP_DELETE_EXTENSION(group_ptr)
#define TX_MUTEX_DELETE_EXTENSION(mutex_ptr)
#define TX_QUEUE_DELETE_EXTENSION(queue_ptr)
#define TX_SEMAPHORE_DELETE_EXTENSION(semaphore_ptr)
#define TX_TIMER_DELETE_EXTENSION(timer_ptr)
/* Define the get system state macro. */
#ifndef TX_THREAD_GET_SYSTEM_STATE
#ifndef TX_MISRA_ENABLE
__attribute__( ( always_inline ) ) static inline unsigned int __get_ipsr_value(void)
{
unsigned int ipsr_value;
__asm__ volatile (" MRS %0,IPSR ": "=r" (ipsr_value) );
return(ipsr_value);
}
#define TX_THREAD_GET_SYSTEM_STATE() (_tx_thread_system_state | __get_ipsr_value())
#else
ULONG _tx_misra_ipsr_get(VOID);
#define TX_THREAD_GET_SYSTEM_STATE() (_tx_thread_system_state | _tx_misra_ipsr_get())
#endif
#endif
/* Define the check for whether or not to call the _tx_thread_system_return function. A non-zero value
indicates that _tx_thread_system_return should not be called. */
#ifndef TX_THREAD_SYSTEM_RETURN_CHECK
#define TX_THREAD_SYSTEM_RETURN_CHECK(c) (c) = ((ULONG) _tx_thread_preempt_disable);
#endif
/* Define the macro to ensure _tx_thread_preempt_disable is set early in initialization in order to
prevent early scheduling on Cortex-M parts. */
#define TX_PORT_SPECIFIC_POST_INITIALIZATION _tx_thread_preempt_disable++;
/* This ARM architecture has the CLZ instruction. This is available on
architectures v5 and above. If available, redefine the macro for calculating the
lowest bit set. */
#ifndef TX_DISABLE_INLINE
#define TX_LOWEST_SET_BIT_CALCULATE(m, b) __asm__ volatile (" RBIT %0,%1 ": "=r" (m) : "r" (m) ); \
__asm__ volatile (" CLZ %0,%1 ": "=r" (b) : "r" (m) );
#endif
#ifndef TX_DISABLE_INLINE
/* Define ThreadX interrupt lockout and restore macros for protection on
access of critical kernel information. The restore interrupt macro must
restore the interrupt posture of the running thread prior to the value
present prior to the disable macro. In most cases, the save area macro
is used to define a local function save area for the disable and restore
macros. */
__attribute__( ( always_inline ) ) static inline unsigned int __disable_interrupts(void)
{
unsigned int primask_value;
__asm__ volatile (" MRS %0,PRIMASK ": "=r" (primask_value) );
__asm__ volatile (" CPSID i" : : : "memory" );
return(primask_value);
}
__attribute__( ( always_inline ) ) static inline void __restore_interrupts(unsigned int primask_value)
{
__asm__ volatile (" MSR PRIMASK,%0": : "r" (primask_value): "memory" );
}
__attribute__( ( always_inline ) ) static inline unsigned int __get_primask_value(void)
{
unsigned int primask_value;
__asm__ volatile (" MRS %0,PRIMASK ": "=r" (primask_value) );
return(primask_value);
}
__attribute__( ( always_inline ) ) static inline void __enable_interrupts(void)
{
__asm__ volatile (" CPSIE i": : : "memory" );
}
__attribute__( ( always_inline ) ) static inline void _tx_thread_system_return_inline(void)
{
unsigned int interrupt_save;
*((ULONG *) 0xE000ED04) = ((ULONG) 0x10000000);
if (__get_ipsr_value() == 0)
{
interrupt_save = __get_primask_value();
__enable_interrupts();
__restore_interrupts(interrupt_save);
}
}
#define TX_INTERRUPT_SAVE_AREA unsigned int interrupt_save;
#define TX_DISABLE interrupt_save = __disable_interrupts();
#define TX_RESTORE __restore_interrupts(interrupt_save);
/* Redefine _tx_thread_system_return for improved performance. */
#define _tx_thread_system_return _tx_thread_system_return_inline
#else
#define TX_INTERRUPT_SAVE_AREA unsigned int interrupt_save;
#define TX_DISABLE interrupt_save = _tx_thread_interrupt_control(TX_INT_DISABLE);
#define TX_RESTORE _tx_thread_interrupt_control(interrupt_save);
#endif
/* Define the version ID of ThreadX. This may be utilized by the application. */
#ifdef TX_THREAD_INIT
CHAR _tx_version_id[] =
"Copyright (c) Microsoft Corporation. All rights reserved. * ThreadX Cortex-M3/AC6 Version 6.1 *";
#else
extern CHAR _tx_version_id[];
#endif
#endif

345
ports_module/cortex-m3/ac6/inc/txm_module_port.h Normal file
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/* */
/* APPLICATION INTERFACE DEFINITION RELEASE */
/* */
/* txm_module_port.h Cortex-M3/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This file defines the basic module constants, interface structures, */
/* and function prototypes. */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Andres Mlinar Initial Version 6.1 */
/* */
/**************************************************************************/
#ifndef TXM_MODULE_PORT_H
#define TXM_MODULE_PORT_H
/* Determine if the optional Modules user define file should be used. */
#ifdef TXM_MODULE_INCLUDE_USER_DEFINE_FILE
/* Yes, include the user defines in txm_module_user.h. The defines in this file may
alternately be defined on the command line. */
#include "txm_module_user.h"
#endif
/* It is assumed that the base ThreadX tx_port.h file has been modified to add the
following extensions to the ThreadX thread control block (this code should replace
the corresponding macro define in tx_port.h):
#define TX_THREAD_EXTENSION_2 VOID *tx_thread_module_instance_ptr; \
VOID *tx_thread_module_entry_info_ptr; \
ULONG tx_thread_module_current_user_mode; \
ULONG tx_thread_module_user_mode; \
ULONG tx_thread_module_saved_lr; \
VOID *tx_thread_module_kernel_stack_start; \
VOID *tx_thread_module_kernel_stack_end; \
ULONG tx_thread_module_kernel_stack_size; \
VOID *tx_thread_module_stack_ptr; \
VOID *tx_thread_module_stack_start; \
VOID *tx_thread_module_stack_end; \
ULONG tx_thread_module_stack_size; \
VOID *tx_thread_module_reserved;
The following extensions must also be defined in tx_port.h:
#define TX_EVENT_FLAGS_GROUP_EXTENSION VOID *tx_event_flags_group_module_instance; \
VOID (*tx_event_flags_group_set_module_notify)(struct TX_EVENT_FLAGS_GROUP_STRUCT *group_ptr);
#define TX_QUEUE_EXTENSION VOID *tx_queue_module_instance; \
VOID (*tx_queue_send_module_notify)(struct TX_QUEUE_STRUCT *queue_ptr);
#define TX_SEMAPHORE_EXTENSION VOID *tx_semaphore_module_instance; \
VOID (*tx_semaphore_put_module_notify)(struct TX_SEMAPHORE_STRUCT *semaphore_ptr);
#define TX_TIMER_EXTENSION VOID *tx_timer_module_instance; \
VOID (*tx_timer_module_expiration_function)(ULONG id);
*/
/* Define the kernel stack size for a module thread. */
#ifndef TXM_MODULE_KERNEL_STACK_SIZE
#define TXM_MODULE_KERNEL_STACK_SIZE 768
#endif
/* For the following 3 access control settings, change TEX and C, B, S (bits 21 through 16 of MPU_RASR)
* to reflect your system memory attributes (cache, shareable, memory type). */
/* Code region access control: privileged read-only, outer & inner write-back, normal memory, shareable. */
#define TXM_MODULE_MPU_CODE_ACCESS_CONTROL 0x06070000
/* Data region access control: execute never, read/write, outer & inner write-back, normal memory, shareable. */
#define TXM_MODULE_MPU_DATA_ACCESS_CONTROL 0x13070000
/* Shared region access control: execute never, read-only, outer & inner write-back, normal memory, shareable. */
#define TXM_MODULE_MPU_SHARED_ACCESS_CONTROL 0x12070000
/* Define constants specific to the tools the module can be built with for this particular modules port. */
#define TXM_MODULE_IAR_COMPILER 0x00000000
#define TXM_MODULE_RVDS_COMPILER 0x01000000
#define TXM_MODULE_GNU_COMPILER 0x02000000
#define TXM_MODULE_COMPILER_MASK 0xFF000000
#define TXM_MODULE_OPTIONS_MASK 0x000000FF
/* Define the properties for this particular module port. */
#define TXM_MODULE_MEMORY_PROTECTION_ENABLED
#ifdef TXM_MODULE_MEMORY_PROTECTION_ENABLED
#define TXM_MODULE_REQUIRE_ALLOCATED_OBJECT_MEMORY
#else
#define TXM_MODULE_REQUIRE_LOCAL_OBJECT_MEMORY
#endif
#define TXM_MODULE_USER_MODE 0x00000001
#define TXM_MODULE_MEMORY_PROTECTION 0x00000002
#define TXM_MODULE_SHARED_EXTERNAL_MEMORY_ACCESS 0x00000004
/* Define the supported options for this module. */
#define TXM_MODULE_MANAGER_SUPPORTED_OPTIONS (TXM_MODULE_USER_MODE | TXM_MODULE_MEMORY_PROTECTION | TXM_MODULE_SHARED_EXTERNAL_MEMORY_ACCESS)
#define TXM_MODULE_MANAGER_REQUIRED_OPTIONS 0
/* Define offset adjustments according to the compiler used to build the module. */
#define TXM_MODULE_IAR_SHELL_ADJUST 24
#define TXM_MODULE_IAR_START_ADJUST 28
#define TXM_MODULE_IAR_STOP_ADJUST 32
#define TXM_MODULE_IAR_CALLBACK_ADJUST 44
#define TXM_MODULE_RVDS_SHELL_ADJUST 0
#define TXM_MODULE_RVDS_START_ADJUST 0
#define TXM_MODULE_RVDS_STOP_ADJUST 0
#define TXM_MODULE_RVDS_CALLBACK_ADJUST 0
#define TXM_MODULE_GNU_SHELL_ADJUST 24
#define TXM_MODULE_GNU_START_ADJUST 28
#define TXM_MODULE_GNU_STOP_ADJUST 32
#define TXM_MODULE_GNU_CALLBACK_ADJUST 44
/* Define other module port-specific constants. */
/* Define INLINE_DECLARE to inline for ARM compiler. */
#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 TXM_MODULE_MANAGER_CODE_MPU_ENTRIES 4
#define TXM_MODULE_MANAGER_DATA_MPU_ENTRIES 3
#define TXM_MODULE_MANAGER_SHARED_MPU_INDEX 8
#define TXM_MODULE_MANAGER_SHARED_MPU_REGION 4
/* Shared memory region attributes. */
#define TXM_MODULE_MANAGER_SHARED_ATTRIBUTE_WRITE 1
#define TXM_MODULE_MANAGER_ATTRIBUTE_WRITE_MPU_BIT 0x01000000
/* Define the port-extensions to the module manager instance structure. */
#define TXM_MODULE_MANAGER_PORT_EXTENSION \
ULONG txm_module_instance_mpu_registers[16]; \
ULONG txm_module_instance_shared_memory_address; \
ULONG txm_module_instance_shared_memory_length;
/* Define the memory fault information structure that is populated when a memory fault occurs. */
typedef struct TXM_MODULE_MANAGER_MEMORY_FAULT_INFO_STRUCT
{
TX_THREAD *txm_module_manager_memory_fault_info_thread_ptr;
VOID *txm_module_manager_memory_fault_info_code_location;
ULONG txm_module_manager_memory_fault_info_shcsr;
ULONG txm_module_manager_memory_fault_info_cfsr;
ULONG txm_module_manager_memory_fault_info_mmfar;
ULONG txm_module_manager_memory_fault_info_bfar;
ULONG txm_module_manager_memory_fault_info_control;
ULONG txm_module_manager_memory_fault_info_sp;
ULONG txm_module_manager_memory_fault_info_r0;
ULONG txm_module_manager_memory_fault_info_r1;
ULONG txm_module_manager_memory_fault_info_r2;
ULONG txm_module_manager_memory_fault_info_r3;
ULONG txm_module_manager_memory_fault_info_r4;
ULONG txm_module_manager_memory_fault_info_r5;
ULONG txm_module_manager_memory_fault_info_r6;
ULONG txm_module_manager_memory_fault_info_r7;
ULONG txm_module_manager_memory_fault_info_r8;
ULONG txm_module_manager_memory_fault_info_r9;
ULONG txm_module_manager_memory_fault_info_r10;
ULONG txm_module_manager_memory_fault_info_r11;
ULONG txm_module_manager_memory_fault_info_r12;
ULONG txm_module_manager_memory_fault_info_lr;
ULONG txm_module_manager_memory_fault_info_xpsr;
} TXM_MODULE_MANAGER_MEMORY_FAULT_INFO;
#define TXM_MODULE_MANAGER_FAULT_INFO \
TXM_MODULE_MANAGER_MEMORY_FAULT_INFO _txm_module_manager_memory_fault_info;
/* Define the macro to check the stack available in dispatch. */
#define TXM_MODULE_MANAGER_CHECK_STACK_AVAILABLE \
ULONG stack_available; \
__asm("MOV %0, SP" : "=r"(stack_available)); \
stack_available -= (ULONG)_tx_thread_current_ptr->tx_thread_stack_start; \
if((stack_available < TXM_MODULE_MINIMUM_STACK_AVAILABLE) || \
(stack_available > _tx_thread_current_ptr->tx_thread_stack_size)) \
{ \
return(TX_SIZE_ERROR); \
}
/* Define the macro to check the code alignment. */
#define TXM_MODULE_MANAGER_CHECK_CODE_ALIGNMENT(module_location, code_alignment) \
{ \
ULONG temp; \
temp = (ULONG) module_location; \
temp = temp & (code_alignment - 1); \
if (temp) \
{ \
_tx_mutex_put(&_txm_module_manager_mutex); \
return(TXM_MODULE_ALIGNMENT_ERROR); \
} \
}
/* Define the macro to adjust the alignment and size for code/data areas. */
#define TXM_MODULE_MANAGER_ALIGNMENT_ADJUST(module_preamble, code_size, code_alignment, data_size, data_alignment) _txm_module_manager_alignment_adjust(module_preamble, &code_size, &code_alignment, &data_size, &data_alignment);
/* Define the macro to adjust the symbols in the module preamble. */
#define TXM_MODULE_MANAGER_CALCULATE_ADJUSTMENTS(properties, shell_function_adjust, start_function_adjust, stop_function_adjust, callback_function_adjust) \
if ((properties & TXM_MODULE_COMPILER_MASK) == TXM_MODULE_IAR_COMPILER) \
{ \
shell_function_adjust = TXM_MODULE_IAR_SHELL_ADJUST; \
start_function_adjust = TXM_MODULE_IAR_START_ADJUST; \
stop_function_adjust = TXM_MODULE_IAR_STOP_ADJUST; \
callback_function_adjust = TXM_MODULE_IAR_CALLBACK_ADJUST; \
} \
else if ((properties & TXM_MODULE_COMPILER_MASK) == TXM_MODULE_RVDS_COMPILER) \
{ \
shell_function_adjust = TXM_MODULE_RVDS_SHELL_ADJUST; \
start_function_adjust = TXM_MODULE_RVDS_START_ADJUST; \
stop_function_adjust = TXM_MODULE_RVDS_STOP_ADJUST; \
callback_function_adjust = TXM_MODULE_RVDS_CALLBACK_ADJUST; \
} \
else \
{ \
shell_function_adjust = TXM_MODULE_GNU_SHELL_ADJUST; \
start_function_adjust = TXM_MODULE_GNU_START_ADJUST; \
stop_function_adjust = TXM_MODULE_GNU_STOP_ADJUST; \
callback_function_adjust = TXM_MODULE_GNU_CALLBACK_ADJUST; \
}
/* Define the macro to populate the thread control block with module port-specific information.
Check if the module is in user mode and set up txm_module_thread_entry_info_kernel_call_dispatcher accordingly.
*/
#define TXM_MODULE_MANAGER_THREAD_SETUP(thread_ptr, module_instance) \
thread_ptr -> tx_thread_module_current_user_mode = module_instance -> txm_module_instance_property_flags & TXM_MODULE_USER_MODE; \
thread_ptr -> tx_thread_module_user_mode = module_instance -> txm_module_instance_property_flags & TXM_MODULE_USER_MODE; \
if (thread_ptr -> tx_thread_module_user_mode) \
{ \
thread_entry_info -> txm_module_thread_entry_info_kernel_call_dispatcher = _txm_module_manager_user_mode_entry; \
} \
else \
{ \
thread_entry_info -> txm_module_thread_entry_info_kernel_call_dispatcher = _txm_module_manager_kernel_dispatch; \
}
/* Define the macro to populate the module control block with module port-specific information.
If memory protection is enabled, set up the MPU registers.
*/
#define TXM_MODULE_MANAGER_MODULE_SETUP(module_instance) \
if (module_instance -> txm_module_instance_property_flags & TXM_MODULE_USER_MODE) \
{ \
if (module_instance -> txm_module_instance_property_flags & TXM_MODULE_MEMORY_PROTECTION) \
{ \
_txm_module_manager_mm_register_setup(module_instance); \
} \
} \
else \
{ \
/* Do nothing. */ \
}
/* Define the macro to perform port-specific functions when unloading the module. */
/* Nothing needs to be done for this port. */
#define TXM_MODULE_MANAGER_MODULE_UNLOAD(module_instance)
/* Define the macros to perform port-specific checks when passing pointers to the kernel. */
/* Define macro to make sure object is inside the module's data. */
#define TXM_MODULE_MANAGER_CHECK_INSIDE_DATA(module_instance, obj_ptr, obj_size) \
/* Check if it's inside module data. */ \
((((obj_ptr) >= (ALIGN_TYPE) module_instance -> txm_module_instance_data_start) && \
(((obj_ptr) + (obj_size)) <= ((ALIGN_TYPE) module_instance -> txm_module_instance_data_end + 1))) || \
/* Check if it's inside shared memory. */ \
(((obj_ptr) >= (ALIGN_TYPE) module_instance -> txm_module_instance_shared_memory_address) && \
(((obj_ptr) + (obj_size)) <= (ALIGN_TYPE) (module_instance -> txm_module_instance_shared_memory_address + module_instance -> txm_module_instance_shared_memory_length))))
/* Define some internal prototypes to this module port. */
#ifndef TX_SOURCE_CODE
#define txm_module_manager_memory_fault_notify _txm_module_manager_memory_fault_notify
#endif
#define TXM_MODULE_MANAGER_ADDITIONAL_PROTOTYPES \
VOID _txm_module_manager_alignment_adjust(TXM_MODULE_PREAMBLE *module_preamble, ULONG *code_size, ULONG *code_alignment, ULONG *data_size, ULONG *data_alignment); \
VOID _txm_module_manager_memory_fault_handler(VOID); \
UINT _txm_module_manager_memory_fault_notify(VOID (*notify_function)(TX_THREAD *, TXM_MODULE_INSTANCE *)); \
VOID _txm_module_manager_mm_register_setup(TXM_MODULE_INSTANCE *module_instance); \
ULONG _txm_power_of_two_block_size(ULONG size); \
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/AC6 Version 6.1 *";
#endif

104
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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.global __use_two_region_memory
.global __scatterload
.eabi_attribute Tag_ABI_PCS_RO_data, 1
.eabi_attribute Tag_ABI_PCS_R9_use, 1
.eabi_attribute Tag_ABI_PCS_RW_data, 2
.text
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_initialize Cortex-M4/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function initializes the module c runtime. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* __scatterload Initialize C runtime */
/* */
/* CALLED BY */
/* */
/* _txm_module_thread_shell_entry Start module thread */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Andres Mlinar Initial Version 6.1 */
/* */
/**************************************************************************/
// VOID _txm_module_initialize(VOID)
.global _txm_module_initialize
.thumb_func
_txm_module_initialize:
PUSH {r4-r12,lr} // Save dregs and LR
//B __scatterload // Call ARM func to initialize variables
// Override the __rt_exit function.
.global __rt_exit
.thumb_func
__rt_exit:
POP {r4-r12,lr} // Restore dregs and LR
BX lr // Return to caller
#define TXM_MODULE_HEAP_SIZE 512
// returns heap start address in R0
// returns heap end address in R2
// does not touch SP, it is already set up before the module runs
.global __user_setup_stackheap
.thumb_func
__user_setup_stackheap:
LDR r1, _txm_heap // load heap offset
MOV r2, TXM_MODULE_HEAP_SIZE // load heap size
ADD r2, r2, r0 // calculate heap end address
BX lr
// dummy main function
.global main
.thumb_func
main:
BX lr
.align 8
_txm_heap:
.zero TXM_MODULE_HEAP_SIZE

172
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
#ifndef TXM_MODULE
#define TXM_MODULE
#endif
#ifndef TX_SOURCE_CODE
#define TX_SOURCE_CODE
#endif
/* Include necessary system files. */
#include "txm_module.h"
#include "tx_thread.h"
/* Define the global module entry pointer from the start thread of the module. */
TXM_MODULE_THREAD_ENTRY_INFO *_txm_module_entry_info;
/* Define the dispatch function pointer used in the module implementation. */
ULONG (*_txm_module_kernel_call_dispatcher)(ULONG kernel_request, ULONG param_1, ULONG param_2, ULONG param3);
/* Define the ARM cstartup code. */
extern VOID _txm_module_initialize(VOID);
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_thread_shell_entry Cortex-M3/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function calls the specified entry function of the thread. It */
/* also provides a place for the thread's entry function to return. */
/* If the thread returns, this function places the thread in a */
/* "COMPLETED" state. */
/* */
/* INPUT */
/* */
/* thread_ptr Pointer to current thread */
/* thread_info Pointer to thread entry info */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _txm_module_initialize cstartup initialization */
/* thread_entry Thread's entry function */
/* tx_thread_resume Resume the module callback thread */
/* _txm_module_thread_system_suspend Module thread suspension routine */
/* */
/* CALLED BY */
/* */
/* Initial thread stack frame */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 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)
{
#ifndef TX_DISABLE_NOTIFY_CALLBACKS
VOID (*entry_exit_notify)(TX_THREAD *, UINT);
#endif
/* Determine if this is the start thread. If so, we must prepare the module for
execution. If not, simply skip the C startup code. */
if (thread_info -> txm_module_thread_entry_info_start_thread)
{
/* Initialize the ARM C environment. */
_txm_module_initialize();
/* Save the entry info pointer, for later use. */
_txm_module_entry_info = thread_info;
/* Save the kernel function dispatch address. This is used to make all resident calls from
the module. */
_txm_module_kernel_call_dispatcher = thread_info -> txm_module_thread_entry_info_kernel_call_dispatcher;
/* Ensure that we have a valid pointer. */
while (!_txm_module_kernel_call_dispatcher)
{
/* Loop here, if an error is present getting the dispatch function pointer!
An error here typically indicates the resident portion of _tx_thread_schedule
is not supporting the trap to obtain the function pointer. */
}
/* Resume the module's callback thread, already created in the manager. */
_txe_thread_resume(thread_info -> txm_module_thread_entry_info_callback_request_thread);
}
#ifndef TX_DISABLE_NOTIFY_CALLBACKS
/* Pickup the entry/exit application callback routine. */
entry_exit_notify = thread_info -> txm_module_thread_entry_info_exit_notify;
/* Determine if an application callback routine is specified. */
if (entry_exit_notify != TX_NULL)
{
/* Yes, notify application that this thread has been entered! */
(entry_exit_notify)(thread_ptr, TX_THREAD_ENTRY);
}
#endif
/* Call current thread's entry function. */
(thread_info -> txm_module_thread_entry_info_entry) (thread_info -> txm_module_thread_entry_info_parameter);
/* Suspend thread with a "completed" state. */
#ifndef TX_DISABLE_NOTIFY_CALLBACKS
/* Pickup the entry/exit application callback routine again. */
entry_exit_notify = thread_info -> txm_module_thread_entry_info_exit_notify;
/* Determine if an application callback routine is specified. */
if (entry_exit_notify != TX_NULL)
{
/* Yes, notify application that this thread has exited! */
(entry_exit_notify)(thread_ptr, TX_THREAD_EXIT);
}
#endif
/* Call actual thread suspension routine. */
_txm_module_thread_system_suspend(thread_ptr);
#ifdef TX_SAFETY_CRITICAL
/* If we ever get here, raise safety critical exception. */
TX_SAFETY_CRITICAL_EXCEPTION(__FILE__, __LINE__, 0);
#endif
}

76
ports_module/cortex-m3/ac6/module_manager/src/tx_thread_context_restore.S Normal file
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.text
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_context_restore Cortex-M3/AC6 */
/* 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_thread_schedule Thread scheduling routine */
/* */
/* 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)
// {
.global _tx_thread_context_restore
.thumb_func
_tx_thread_context_restore:
/* Not needed for this port - just return! */
BX lr
// }

75
ports_module/cortex-m3/ac6/module_manager/src/tx_thread_context_save.S Normal file
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.text
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_context_save Cortex-M3/AC6 */
/* 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 */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* ISRs */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 William E. Lamie Initial Version 6.1 */
/* */
/**************************************************************************/
// VOID _tx_thread_context_save(VOID)
// {
.global _tx_thread_context_save
.thumb_func
_tx_thread_context_save:
/* Not needed for this port - just return! */
BX lr
// }

80
ports_module/cortex-m3/ac6/module_manager/src/tx_thread_interrupt_control.S Normal file
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.text 32
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
@/* _tx_thread_interrupt_control Cortex-M3/AC6 */
/* 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)
// {
.global _tx_thread_interrupt_control
.thumb_func
_tx_thread_interrupt_control:
// Pickup current interrupt lockout posture.
MRS r1, PRIMASK // Pickup current interrupt lockout
// Apply the new interrupt posture.
MSR PRIMASK, r0 // Apply the new interrupt lockout
MOV r0, r1 // Transfer old to return register
BX lr // Return to caller
// }

524
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.global _tx_thread_current_ptr
.global _tx_thread_execute_ptr
.global _tx_timer_time_slice
.global _tx_thread_system_stack_ptr
.global _tx_thread_preempt_disable
.global _txm_module_manager_memory_fault_handler
.global _txm_module_manager_memory_fault_info
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
.global _tx_execution_thread_enter
.global _tx_execution_thread_exit
#endif
.text
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_schedule Cortex-M3/MPU/AC6 */
/* 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)
// {
.global _tx_thread_schedule
.thumb_func
_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. */
__tx_wait_here:
B __tx_wait_here // Wait for the PendSV to happen
// }
/* Memory Exception Handler. */
.global MemManage_Handler
.global BusFault_Handler
.global UsageFault_Handler
.thumb_func
MemManage_Handler:
.thumb_func
BusFault_Handler:
.thumb_func
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
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
#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
#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
// 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. */
.global PendSV_Handler
.thumb_func
PendSV_Handler:
.global __tx_PendSVHandler
.thumb_func
__tx_PendSVHandler:
/* 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
#endif
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. */
__tx_ts_restore:
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
/* Setup global time-slice with thread's current time-slice. */
STR r5, [r4] // Setup global time-slice
#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
#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
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 MPU regions 0-3
STM r1,{r2-r9} // Store MPU regions 0-3
LDM r0!,{r2-r9} // Load MPU regions 4-7
STM r1,{r2-r9} // Store MPU regions 4-7
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
/* SVC Handler. */
.global SVC_Handler
.thumb_func
SVC_Handler:
.global __tx_SVCallHandler
.thumb_func
__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 // Load address of where we should have come from
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
#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
#endif
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}
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
_tx_thread_user_return:
LDR r2, =_txm_module_user_mode_exit // Load address of where we should have come from
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
/* 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
#endif
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
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
/* Kernel entry function from user mode. */
.global _txm_module_manager_kernel_dispatch
.align 5
.syntax unified
// VOID _txm_module_manager_user_mode_entry(VOID)
// {
.global _txm_module_manager_user_mode_entry
.thumb_func
_txm_module_manager_user_mode_entry:
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. */
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
SVC 2 // Exit kernel and return to user mode
_txm_module_user_mode_exit:
BX lr // Return to the caller
NOP
NOP
NOP
NOP
// }

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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.text
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_stack_build Cortex-M3/AC6 */
/* 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))
// {
.global _tx_thread_stack_build
.thumb_func
_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
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
// }

88
ports_module/cortex-m3/ac6/module_manager/src/tx_thread_system_return.S Normal file
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.text 32
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_system_return Cortex-M3/AC6 */
/* 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 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
// VOID _tx_thread_system_return(VOID)
// {
.thumb_func
.global _tx_thread_system_return
_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
_isr_context:
BX lr // Return to caller
// }

257
ports_module/cortex-m3/ac6/module_manager/src/tx_timer_interrupt.S Normal file
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.global _tx_timer_time_slice
.global _tx_timer_system_clock
.global _tx_timer_current_ptr
.global _tx_timer_list_start
.global _tx_timer_list_end
.global _tx_timer_expired_time_slice
.global _tx_timer_expired
.global _tx_thread_time_slice
.global _tx_timer_expiration_process
.text
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_timer_interrupt Cortex-M3/AC6 */
/* 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 */
/* interrupt context save/restore functions are called along with the */
/* expiration functions. */
/* */
/* 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 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
// VOID _tx_timer_interrupt(VOID)
// {
.global _tx_timer_interrupt
.thumb_func
_tx_timer_interrupt:
/* Upon entry to this routine, it is assumed that context save has already
been called, and therefore 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
// }
__tx_timer_nothing_expired:
DSB // Complete all memory access
BX lr // Return to caller
// }

399
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
#include "tx_api.h"
#include "txm_module.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_power_of_two_block_size Cortex-M3/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function calculates a power of two size at or immediately above*/
/* the input size and returns it to the caller. */
/* */
/* INPUT */
/* */
/* size Block size */
/* */
/* OUTPUT */
/* */
/* calculated size Rounded up to power of two */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _txm_module_manager_alignment_adjust Adjust alignment for Cortex-M */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
ULONG _txm_power_of_two_block_size(ULONG size)
{
/* Check for 0 size. */
if(size == 0)
return 0;
/* Minimum MPU block size is 32. */
if(size <= 32)
return 32;
/* Bit twiddling trick to round to next high power of 2
(if original size is power of 2, it will return original size. Perfect!) */
size--;
size |= size >> 1;
size |= size >> 2;
size |= size >> 4;
size |= size >> 8;
size |= size >> 16;
size++;
/* Return a power of 2 size at or above the input size. */
return(size);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_alignment_adjust Cortex-M3/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function adjusts the alignment and size of the code and data */
/* section for a given module implementation. */
/* */
/* INPUT */
/* */
/* module_preamble Pointer to module preamble */
/* code_size Size of the code area (updated) */
/* code_alignment Code area alignment (updated) */
/* data_size Size of data area (updated) */
/* data_alignment Data area alignment (updated) */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _txm_power_of_two_block_size Calculate power of two size */
/* */
/* CALLED BY */
/* */
/* Initial thread stack frame */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
VOID _txm_module_manager_alignment_adjust(TXM_MODULE_PREAMBLE *module_preamble,
ULONG *code_size,
ULONG *code_alignment,
ULONG *data_size,
ULONG *data_alignment)
{
ULONG local_code_size;
ULONG local_code_alignment;
ULONG local_data_size;
ULONG local_data_alignment;
ULONG code_block_size;
ULONG data_block_size;
ULONG code_size_accum;
ULONG data_size_accum;
/* Copy the input parameters into local variables for ease of use. */
local_code_size = *code_size;
local_code_alignment = *code_alignment;
local_data_size = *data_size;
local_data_alignment = *data_alignment;
/* Test for external memory enabled in preamble. */
if(module_preamble -> txm_module_preamble_property_flags & TXM_MODULE_SHARED_EXTERNAL_MEMORY_ACCESS)
{
/* External/shared memory enabled. TXM_MODULE_MANAGER_CODE_MPU_ENTRIES-1 code entries will be used. */
if (local_code_size <= (32*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 32 is best. */
code_block_size = 32;
}
else if (local_code_size <= (64*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 64 is best. */
code_block_size = 64;
}
else if (local_code_size <= (128*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 128 is best. */
code_block_size = 128;
}
else if (local_code_size <= (256*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 256 is best. */
code_block_size = 256;
}
else if (local_code_size <= (512*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 512 is best. */
code_block_size = 512;
}
else if (local_code_size <= (1024*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 1024 is best. */
code_block_size = 1024;
}
else if (local_code_size <= (2048*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 2048 is best. */
code_block_size = 2048;
}
else if (local_code_size <= (4096*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 4096 is best. */
code_block_size = 4096;
}
else if (local_code_size <= (8192*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 8192 is best. */
code_block_size = 8192;
}
else if (local_code_size <= (16384*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 16384 is best. */
code_block_size = 16384;
}
else if (local_code_size <= (32768*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 32768 is best. */
code_block_size = 32768;
}
else if (local_code_size <= (65536*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 65536 is best. */
code_block_size = 65536;
}
else if (local_code_size <= (131072*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 131072 is best. */
code_block_size = 131072;
}
else if (local_code_size <= (262144*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 262144 is best. */
code_block_size = 262144;
}
else if (local_code_size <= (524288*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 524288 is best. */
code_block_size = 524288;
}
else if (local_code_size <= (1048576*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 1048576 is best. */
code_block_size = 1048576;
}
else if (local_code_size <= (2097152*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 2097152 is best. */
code_block_size = 2097152;
}
else if (local_code_size <= (4194304*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1)))
{
/* Block size of 4194304 is best. */
code_block_size = 4194304;
}
else
{
/* Just set block size to 32MB just to create an allocation error! */
code_block_size = 33554432;
}
/* Calculate the new code size. */
local_code_size = code_block_size*(TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1);
/* Determine if the code block size is greater than the current alignment. If so, use block size
as the alignment. */
if (code_block_size > local_code_alignment)
local_code_alignment = code_block_size;
}
else
{
/* Determine code block sizes. Minimize the alignment requirement.
There are 4 MPU code entries available. The following is how the code size
will be distributed:
1. 1/4 of the largest power of two that is greater than or equal to code size.
2. 1/4 of the largest power of two that is greater than or equal to code size.
3. Largest power of 2 that fits in the remaining space.
4. Smallest power of 2 that exceeds the remaining space, minimum 32. */
local_code_alignment = _txm_power_of_two_block_size(local_code_size) >> 2;
code_size_accum = local_code_alignment + local_code_alignment;
code_size_accum = code_size_accum + (_txm_power_of_two_block_size(local_code_size - code_size_accum) >> 1);
code_size_accum = code_size_accum + _txm_power_of_two_block_size(local_code_size - code_size_accum);
local_code_size = code_size_accum;
}
/* Determine the best data block size, which in our case is the minimal alignment. */
if (local_data_size <= (32*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 32 is best. */
data_block_size = 32;
}
else if (local_data_size <= (64*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 64 is best. */
data_block_size = 64;
}
else if (local_data_size <= (128*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 128 is best. */
data_block_size = 128;
}
else if (local_data_size <= (256*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 256 is best. */
data_block_size = 256;
}
else if (local_data_size <= (512*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 512 is best. */
data_block_size = 512;
}
else if (local_data_size <= (1024*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 1024 is best. */
data_block_size = 1024;
}
else if (local_data_size <= (2048*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 2048 is best. */
data_block_size = 2048;
}
else if (local_data_size <= (4096*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 4096 is best. */
data_block_size = 4096;
}
else if (local_data_size <= (8192*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 8192 is best. */
data_block_size = 8192;
}
else if (local_data_size <= (16384*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 16384 is best. */
data_block_size = 16384;
}
else if (local_data_size <= (32768*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 32768 is best. */
data_block_size = 32768;
}
else if (local_data_size <= (65536*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 65536 is best. */
data_block_size = 65536;
}
else if (local_data_size <= (131072*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 131072 is best. */
data_block_size = 131072;
}
else if (local_data_size <= (262144*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 262144 is best. */
data_block_size = 262144;
}
else if (local_data_size <= (524288*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 524288 is best. */
data_block_size = 524288;
}
else if (local_data_size <= (1048576*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 1048576 is best. */
data_block_size = 1048576;
}
else if (local_data_size <= (2097152*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 2097152 is best. */
data_block_size = 2097152;
}
else if (local_data_size <= (4194304*TXM_MODULE_MANAGER_DATA_MPU_ENTRIES))
{
/* Block size of 4194304 is best. */
data_block_size = 4194304;
}
else
{
/* Just set data block size to 32MB just to create an allocation error! */
data_block_size = 33554432;
}
/* Calculate the new data size. */
data_size_accum = data_block_size;
while(data_size_accum < local_data_size)
{
data_size_accum += data_block_size;
}
local_data_size = data_size_accum;
/* Determine if the data block size is greater than the current alignment. If so, use block size
as the alignment. */
if (data_block_size > local_data_alignment)
{
local_data_alignment = data_block_size;
}
/* Return all the information to the caller. */
*code_size = local_code_size;
*code_alignment = local_code_alignment;
*data_size = local_data_size;
*data_alignment = local_data_alignment;
}

182
ports_module/cortex-m3/ac6/module_manager/src/txm_module_manager_external_memory_enable.c Normal file
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
#include "tx_api.h"
#include "tx_mutex.h"
#include "tx_queue.h"
#include "tx_thread.h"
#include "txm_module.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_external_memory_enable Cortex-M3/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function creates an entry in the MPU table for a shared */
/* memory space. */
/* */
/* INPUT */
/* */
/* module_instance Module instance pointer */
/* start_address Start address of memory */
/* length Length of external memory */
/* attributes Memory attributes (r/w) */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* _tx_mutex_get Get protection mutex */
/* _tx_mutex_put Release protection mutex */
/* _txm_power_of_two_block_size Round length to power of two */
/* _txm_module_manager_mm_register_setup Reconfigure MPU registers */
/* */
/* CALLED BY */
/* */
/* Application code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
UINT _txm_module_manager_external_memory_enable(TXM_MODULE_INSTANCE *module_instance,
VOID *start_address,
ULONG length,
UINT attributes)
{
ULONG block_size;
ULONG region_size;
ULONG subregion_bits;
ULONG address;
UINT attributes_check = 0;
TXM_MODULE_PREAMBLE *module_preamble;
/* Determine if the module manager has not been initialized yet. */
if (_txm_module_manager_ready != TX_TRUE)
{
/* Module manager has not been initialized. */
return(TX_NOT_AVAILABLE);
}
/* Determine if the module is valid. */
if (module_instance == TX_NULL)
{
/* Invalid module pointer. */
return(TX_PTR_ERROR);
}
/* Get module manager protection mutex. */
_tx_mutex_get(&_txm_module_manager_mutex, TX_WAIT_FOREVER);
/* Determine if the module instance is valid. */
if (module_instance -> txm_module_instance_id != TXM_MODULE_ID)
{
/* Release the protection mutex. */
_tx_mutex_put(&_txm_module_manager_mutex);
/* Invalid module pointer. */
return(TX_PTR_ERROR);
}
/* Determine if the module instance is in the loaded state. */
if (module_instance -> txm_module_instance_state != TXM_MODULE_LOADED)
{
/* Release the protection mutex. */
_tx_mutex_put(&_txm_module_manager_mutex);
/* Return error if the module is not ready. */
return(TX_START_ERROR);
}
/* Check if preamble shared mem and mem protection property bits are set. */
module_preamble = module_instance -> txm_module_instance_preamble_ptr;
if((module_preamble -> txm_module_preamble_property_flags & (TXM_MODULE_MEMORY_PROTECTION | TXM_MODULE_SHARED_EXTERNAL_MEMORY_ACCESS))
!= (TXM_MODULE_MEMORY_PROTECTION | TXM_MODULE_SHARED_EXTERNAL_MEMORY_ACCESS))
{
/* Release the protection mutex. */
_tx_mutex_put(&_txm_module_manager_mutex);
/* Return error if bit not set. */
return(TXM_MODULE_INVALID_PROPERTIES);
}
/* Start address and length must adhere to Cortex-M MPU.
The address must align with the block size. */
block_size = _txm_power_of_two_block_size(length);
address = (ULONG) start_address;
if(address != (address & ~(block_size - 1)))
{
/* Release the protection mutex. */
_tx_mutex_put(&_txm_module_manager_mutex);
/* Return alignment error. */
return(TXM_MODULE_ALIGNMENT_ERROR);
}
/* At this point, we have a valid address and block size.
Set up MPU registers. */
module_instance -> txm_module_instance_mpu_registers[TXM_MODULE_MANAGER_SHARED_MPU_INDEX] = address | TXM_MODULE_MANAGER_SHARED_MPU_REGION | 0x10;
/* Calculate the region size. */
region_size = (_txm_module_manager_region_size_get(block_size) << 1);
/* Calculate the subregion bits. */
subregion_bits = _txm_module_manager_calculate_srd_bits(block_size, length);
/* Check for valid attributes. */
if(attributes & TXM_MODULE_MANAGER_SHARED_ATTRIBUTE_WRITE)
{
attributes_check = TXM_MODULE_MANAGER_ATTRIBUTE_WRITE_MPU_BIT;
}
/* Build register with attributes. */
module_instance -> txm_module_instance_mpu_registers[TXM_MODULE_MANAGER_SHARED_MPU_INDEX+1] = region_size | subregion_bits | attributes_check | 0x12070001;
/* Keep track of shared memory address and length in module instance. */
module_instance -> txm_module_instance_shared_memory_address = address;
module_instance -> txm_module_instance_shared_memory_length = length;
/* Recalculate MPU settings. */
_txm_module_manager_mm_register_setup(module_instance);
/* Release the protection mutex. */
_tx_mutex_put(&_txm_module_manager_mutex);
/* Return success. */
return(TX_SUCCESS);
}

110
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
#include "tx_api.h"
#include "tx_thread.h"
#include "txm_module.h"
/* Define the user's fault notification callback function pointer. This is
setup via the txm_module_manager_memory_fault_notify API. */
VOID (*_txm_module_manager_fault_notify)(TX_THREAD *, TXM_MODULE_INSTANCE *);
/* Define a macro that can be used to allocate global variables useful to
store information about the last fault. This macro is defined in
txm_module_port.h and is usually populated in the assembly language
fault handling prior to the code calling _txm_module_manager_memory_fault_handler. */
TXM_MODULE_MANAGER_FAULT_INFO
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_memory_fault_handler Cortex-M3/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function handles a fault associated with a memory protected */
/* module. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _tx_thread_terminate Terminate thread */
/* */
/* CALLED BY */
/* */
/* Fault handler */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
VOID _txm_module_manager_memory_fault_handler(VOID)
{
TXM_MODULE_INSTANCE *module_instance_ptr;
TX_THREAD *thread_ptr;
/* Pickup the current thread. */
thread_ptr = _tx_thread_current_ptr;
/* Initialize the module instance pointer to NULL. */
module_instance_ptr = TX_NULL;
/* Is there a thread? */
if (thread_ptr)
{
/* Pickup the module instance. */
module_instance_ptr = thread_ptr -> tx_thread_module_instance_ptr;
/* Terminate the current thread. */
_tx_thread_terminate(_tx_thread_current_ptr);
}
/* Determine if there is a user memory fault notification callback. */
if (_txm_module_manager_fault_notify)
{
/* Yes, call the user's notification memory fault callback. */
(_txm_module_manager_fault_notify)(thread_ptr, module_instance_ptr);
}
}

84
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
#include "tx_api.h"
#include "tx_thread.h"
#include "txm_module.h"
/* Define the external user's fault notification callback function pointer. This is
setup via the txm_module_manager_memory_fault_notify API. */
extern VOID (*_txm_module_manager_fault_notify)(TX_THREAD *, TXM_MODULE_INSTANCE *);
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_memory_fault_notify Cortex-M3/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function registers an application callback when/if a memory */
/* fault occurs. The supplied thread is automatically terminated, but */
/* any other threads in the same module may still execute. */
/* */
/* INPUT */
/* */
/* notify_function Memory fault notification */
/* function, NULL disables. */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
UINT _txm_module_manager_memory_fault_notify(VOID (*notify_function)(TX_THREAD *, TXM_MODULE_INSTANCE *))
{
/* Setup notification function. */
_txm_module_manager_fault_notify = notify_function;
/* Return success. */
return(TX_SUCCESS);
}

512
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
#include "tx_api.h"
#include "txm_module.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_region_size_get Cortex-M3/MPU */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function converts the region size in bytes to the block size */
/* for the Cortex-M3 MPU specification. */
/* */
/* INPUT */
/* */
/* block_size Size of the block in bytes */
/* */
/* OUTPUT */
/* */
/* MPU size specification */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _txm_module_manager_mm_register_setup */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
ULONG _txm_module_manager_region_size_get(ULONG block_size)
{
ULONG return_value;
/* Process relative to the input block size. */
if (block_size == 32)
{
return_value = 0x04;
}
else if (block_size == 64)
{
return_value = 0x05;
}
else if (block_size == 128)
{
return_value = 0x06;
}
else if (block_size == 256)
{
return_value = 0x07;
}
else if (block_size == 512)
{
return_value = 0x08;
}
else if (block_size == 1024)
{
return_value = 0x09;
}
else if (block_size == 2048)
{
return_value = 0x0A;
}
else if (block_size == 4096)
{
return_value = 0x0B;
}
else if (block_size == 8192)
{
return_value = 0x0C;
}
else if (block_size == 16384)
{
return_value = 0x0D;
}
else if (block_size == 32768)
{
return_value = 0x0E;
}
else if (block_size == 65536)
{
return_value = 0x0F;
}
else if (block_size == 131072)
{
return_value = 0x10;
}
else if (block_size == 262144)
{
return_value = 0x11;
}
else if (block_size == 524288)
{
return_value = 0x12;
}
else if (block_size == 1048576)
{
return_value = 0x13;
}
else if (block_size == 2097152)
{
return_value = 0x14;
}
else
{
/* Max 4MB MPU pages for modules. */
return_value = 0x15;
}
return(return_value);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_calculate_srd_bits Cortex-M3/MPU/AC6 */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function calculates the SRD bits that need to be set to */
/* protect "length" bytes in a block. */
/* */
/* INPUT */
/* */
/* block_size Size of the block in bytes */
/* length Actual length in bytes */
/* */
/* OUTPUT */
/* */
/* SRD bits to be OR'ed with region attribute register. */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _txm_module_manager_mm_register_setup */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
ULONG _txm_module_manager_calculate_srd_bits(ULONG block_size, ULONG length)
{
ULONG srd_bits = 0;
UINT srd_bit_index;
/* length is smaller than block_size, set SRD bits if block_size is 256 or more. */
if((block_size >= 256) && (length < block_size))
{
/* Divide block_size by 8 by shifting right 3. Result is size of subregion. */
block_size = block_size >> 3;
/* Set SRD index into attribute register. */
srd_bit_index = 8;
/* If subregion overlaps length, move to the next subregion. */
while(length > block_size)
{
length = length - block_size;
srd_bit_index++;
}
/* Check for a portion of code remaining. */
if(length)
{
srd_bit_index++;
}
/* Set unused subregion bits. */
while(srd_bit_index < 16)
{
srd_bits = srd_bits | (0x1 << srd_bit_index);
srd_bit_index++;
}
}
return(srd_bits);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_mm_register_setup Cortex-M3/MPU */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function sets up the Cortex-M3 MPU register definitions based */
/* on the module's memory characteristics. */
/* */
/* INPUT */
/* */
/* module_instance Pointer to module instance */
/* */
/* OUTPUT */
/* */
/* MPU specifications for module in module_instance */
/* */
/* CALLS */
/* */
/* _txm_module_manager_region_size_get */
/* */
/* CALLED BY */
/* */
/* _txm_module_manager_thread_create */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Scott Larson Initial Version 6.1 */
/* */
/**************************************************************************/
VOID _txm_module_manager_mm_register_setup(TXM_MODULE_INSTANCE *module_instance)
{
ULONG code_address;
ULONG code_size;
ULONG data_address;
ULONG data_size;
ULONG start_stop_stack_size;
ULONG callback_stack_size;
ULONG block_size;
ULONG base_address_register;
ULONG base_attribute_register;
ULONG region_size;
ULONG srd_bits = 0;
UINT mpu_register = 0;
UINT mpu_table_index;
UINT i;
/* Setup the first region for the ThreadX trampoline code. */
/* Set base register to user mode entry, which is guaranteed to be at least 32-byte aligned. */
base_address_register = (ULONG) _txm_module_manager_user_mode_entry;
/* Mask address to proper range, region 0, set Valid bit. */
base_address_register = (base_address_register & 0xFFFFFFE0) | mpu_register | 0x10;
module_instance -> txm_module_instance_mpu_registers[0] = base_address_register;
/* Attributes: read only, write-back, shareable, size 32 bytes, region enabled. */
module_instance -> txm_module_instance_mpu_registers[1] = 0x06070009;
/* Initialize the MPU register. */
mpu_register = 1;
/* Initialize the MPU table index. */
mpu_table_index = 2;
/* Setup values for code area. */
code_address = (ULONG) module_instance -> txm_module_instance_code_start;
code_size = module_instance -> txm_module_instance_preamble_ptr -> txm_module_preamble_code_size;
/* Check if shared memory was set up. If so, only 3 entries are available for
code protection. If not set up, 4 code entries are available. */
if(module_instance -> txm_module_instance_mpu_registers[TXM_MODULE_MANAGER_SHARED_MPU_INDEX] == 0)
{
/* Determine code block sizes. Minimize the alignment requirement.
There are 4 MPU code entries available. The following is how the code size
will be distributed:
1. 1/4 of the largest power of two that is greater than or equal to code size.
2. 1/4 of the largest power of two that is greater than or equal to code size.
3. Largest power of 2 that fits in the remaining space.
4. Smallest power of 2 that exceeds the remaining space, minimum 32. */
/* Now loop through to setup MPU protection for the code area. */
for (i = 0; i < TXM_MODULE_MANAGER_CODE_MPU_ENTRIES; i++)
{
/* First two MPU blocks are 1/4 of the largest power of two
that is greater than or equal to code size. */
if (i < 2)
{
block_size = _txm_power_of_two_block_size(code_size) >> 2;
}
/* Third MPU block is the largest power of 2 that fits in the remaining space. */
else if (i == 2)
{
/* Subtract (block_size*2) from code_size to calculate remaining space. */
code_size = code_size - (block_size << 1);
block_size = _txm_power_of_two_block_size(code_size) >> 1;
}
/* Last MPU block is the smallest power of 2 that exceeds the remaining space, minimum 32. */
else
{
/* Calculate remaining space. */
code_size = code_size - block_size;
block_size = _txm_power_of_two_block_size(code_size);
srd_bits = _txm_module_manager_calculate_srd_bits(block_size, code_size);
}
/* Build the base address register. */
base_address_register = (code_address & ~(block_size - 1)) | mpu_register | 0x10;
/* Calculate the region size information. */
region_size = (_txm_module_manager_region_size_get(block_size) << 1);
/* Build the base attribute register. */
base_attribute_register = region_size | srd_bits | 0x06070001;
/* Setup the MPU Base Address Register. */
module_instance -> txm_module_instance_mpu_registers[mpu_table_index] = base_address_register;
/* Setup the MPU Base Attribute Register. */
module_instance -> txm_module_instance_mpu_registers[mpu_table_index+1] = base_attribute_register;
/* Adjust the code address. */
code_address = code_address + block_size;
/* Move MPU table index. */
mpu_table_index = mpu_table_index + 2;
/* Increment the MPU register index. */
mpu_register++;
}
}
/* Only 3 code entries available. */
else
{
/* Calculate block size, one code entry taken up by shared memory. */
block_size = _txm_power_of_two_block_size(code_size / (TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1));
/* Calculate the region size information. */
region_size = (_txm_module_manager_region_size_get(block_size) << 1);
/* Now loop through to setup MPU protection for the code area. */
for (i = 0; i < TXM_MODULE_MANAGER_CODE_MPU_ENTRIES - 1; i++)
{
/* Build the base address register. */
base_address_register = code_address & ~(block_size - 1) | mpu_register | 0x10;
/* Check if SRD bits need to be set. */
if (code_size < block_size)
{
srd_bits = _txm_module_manager_calculate_srd_bits(block_size, code_size);
}
/* Build the base attribute register. */
base_attribute_register = region_size | srd_bits | 0x06070000;
/* Is there still some code? If so set the region enable bit. */
if (code_size)
{
/* Set the region enable bit. */
base_attribute_register = base_attribute_register | 0x1;
}
/* Setup the MPU Base Address Register. */
module_instance -> txm_module_instance_mpu_registers[mpu_table_index] = base_address_register;
/* Setup the MPU Base Attribute Register. */
module_instance -> txm_module_instance_mpu_registers[mpu_table_index+1] = base_attribute_register;
/* Adjust the code address. */
code_address = code_address + block_size;
/* Decrement the code size. */
if (code_size > block_size)
{
code_size = code_size - block_size;
}
else
{
code_size = 0;
}
/* Move MPU table index. */
mpu_table_index = mpu_table_index + 2;
/* Increment the MPU register index. */
mpu_register++;
}
/* Adjust indeces to pass over the shared memory entry. */
/* Move MPU table index. */
mpu_table_index = mpu_table_index + 2;
/* Increment the MPU register index. */
mpu_register++;
}
/* Setup values for data area. */
data_address = (ULONG) module_instance -> txm_module_instance_data_start;
/* Adjust the size of the module elements to be aligned to the default alignment. We do this
so that when we partition the allocated memory, we can simply place these regions right beside
each other without having to align their pointers. Note this only works when they all have
the same alignment. */
data_size = module_instance -> txm_module_instance_preamble_ptr -> txm_module_preamble_data_size;
start_stop_stack_size = module_instance -> txm_module_instance_preamble_ptr -> txm_module_preamble_start_stop_stack_size;
callback_stack_size = module_instance -> txm_module_instance_preamble_ptr -> txm_module_preamble_callback_stack_size;
data_size = ((data_size + TXM_MODULE_DATA_ALIGNMENT - 1)/TXM_MODULE_DATA_ALIGNMENT) * TXM_MODULE_DATA_ALIGNMENT;
start_stop_stack_size = ((start_stop_stack_size + TXM_MODULE_DATA_ALIGNMENT - 1)/TXM_MODULE_DATA_ALIGNMENT) * TXM_MODULE_DATA_ALIGNMENT;
callback_stack_size = ((callback_stack_size + TXM_MODULE_DATA_ALIGNMENT - 1)/TXM_MODULE_DATA_ALIGNMENT) * TXM_MODULE_DATA_ALIGNMENT;
/* Update the data size to include thread stacks. */
data_size = data_size + start_stop_stack_size + callback_stack_size;
block_size = _txm_power_of_two_block_size(data_size / TXM_MODULE_MANAGER_DATA_MPU_ENTRIES);
/* Reset SRD bitfield. */
srd_bits = 0;
/* Calculate the region size information. */
region_size = (_txm_module_manager_region_size_get(block_size) << 1);
/* Now loop through to setup MPU protection for the data area. */
for (i = 0; i < TXM_MODULE_MANAGER_DATA_MPU_ENTRIES; i++)
{
/* Build the base address register. */
base_address_register = (data_address & ~(block_size - 1)) | mpu_register | 0x10;
/* Check if SRD bits need to be set. */
if (data_size < block_size)
{
srd_bits = _txm_module_manager_calculate_srd_bits(block_size, data_size);
}
/* Build the base attribute register. */
base_attribute_register = region_size | srd_bits | 0x13070000;
/* Is there still some data? If so set the region enable bit. */
if (data_size)
{
/* Set the region enable bit. */
base_attribute_register = base_attribute_register | 0x1;
}
/* Setup the MPU Base Address Register. */
module_instance -> txm_module_instance_mpu_registers[mpu_table_index] = base_address_register;
/* Setup the MPU Base Attribute Register. */
module_instance -> txm_module_instance_mpu_registers[mpu_table_index+1] = base_attribute_register;
/* Adjust the data address. */
data_address = data_address + block_size;
/* Decrement the data size. */
if (data_size > block_size)
{
data_size = data_size - block_size;
}
else
{
data_size = 0;
}
/* Move MPU table index. */
mpu_table_index = mpu_table_index + 2;
/* Increment the MPU register index. */
mpu_register++;
}
}

141
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/**************************************************************************/
/* */
/* 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 */
/** */
/**************************************************************************/
/**************************************************************************/
.text
.align 4
.syntax unified
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_thread_stack_build Cortex-M3/MPU/AC6 */
/* 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 *))
// {
.global _txm_module_manager_thread_stack_build
.thumb_func
_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
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
// }