1/**************************************************************************/
2/*                                                                        */
3/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
4/*                                                                        */
5/*       This software is licensed under the Microsoft Software License   */
6/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
7/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
8/*       and in the root directory of this software.                      */
9/*                                                                        */
10/**************************************************************************/
11
12
13/**************************************************************************/
14/**************************************************************************/
15/**                                                                       */
16/** ThreadX Component                                                     */
17/**                                                                       */
18/**   Thread                                                              */
19/**                                                                       */
20/**************************************************************************/
21/**************************************************************************/
22
23#ifdef TX_INCLUDE_USER_DEFINE_FILE
24#include "tx_user.h"
25#endif
26
27    EXTERN  _tx_execution_isr_enter
28    SECTION `.text`:CODE:NOROOT(2)
29    THUMB
30/**************************************************************************/
31/*                                                                        */
32/*  FUNCTION                                               RELEASE        */
33/*                                                                        */
34/*    _tx_thread_context_save                           Cortex-Mxx/IAR    */
35/*                                                           6.1          */
36/*  AUTHOR                                                                */
37/*                                                                        */
38/*    Scott Larson, Microsoft Corporation                                 */
39/*                                                                        */
40/*  DESCRIPTION                                                           */
41/*                                                                        */
42/*    This function is not needed for Cortex-M.                           */
43/*                                                                        */
44/*  INPUT                                                                 */
45/*                                                                        */
46/*    None                                                                */
47/*                                                                        */
48/*  OUTPUT                                                                */
49/*                                                                        */
50/*    None                                                                */
51/*                                                                        */
52/*  CALLS                                                                 */
53/*                                                                        */
54/*    [_tx_execution_isr_enter]             Execution profiling ISR enter */
55/*                                                                        */
56/*  CALLED BY                                                             */
57/*                                                                        */
58/*    ISRs                                                                */
59/*                                                                        */
60/*  RELEASE HISTORY                                                       */
61/*                                                                        */
62/*    DATE              NAME                      DESCRIPTION             */
63/*                                                                        */
64/*  09-30-2020      Scott Larson            Initial Version 6.1           */
65/*                                                                        */
66/**************************************************************************/
67// VOID   _tx_thread_context_save(VOID)
68// {
69    PUBLIC  _tx_thread_context_save
70_tx_thread_context_save:
71
72#if (defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY) || defined(TX_EXECUTION_PROFILE_ENABLE))
73    /* Call the ISR enter function to indicate an ISR is starting.  */
74    PUSH    {r0, lr}                                // Save return address
75    BL      _tx_execution_isr_enter                 // Call the ISR enter function
76    POP     {r0, lr}                                // Recover return address
77#endif
78
79    BX      lr
80// }
81    END
82