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#ifdef TX_INCLUDE_USER_DEFINE_FILE
23#include "tx_user.h"
24#endif
25
26
27INT_MASK        =   0x03F
28
29@
30@/* Define the 16-bit Thumb mode veneer for _tx_thread_interrupt_control for
31@   applications calling this function from to 16-bit Thumb mode.  */
32@
33    .text
34    .align 2
35    .global $_tx_thread_interrupt_control
36$_tx_thread_interrupt_control:
37        .thumb
38     BX        pc                               @ Switch to 32-bit mode
39     NOP                                        @
40    .arm
41     STMFD     sp!, {lr}                        @ Save return address
42     BL        _tx_thread_interrupt_control     @ Call _tx_thread_interrupt_control function
43     LDMFD     sp!, {lr}                        @ Recover saved return address
44     BX        lr                               @ Return to 16-bit caller
45@
46@
47    .text
48    .align 2
49@/**************************************************************************/
50@/*                                                                        */
51@/*  FUNCTION                                               RELEASE        */
52@/*                                                                        */
53@/*    _tx_thread_interrupt_control                         ARM9/GNU       */
54@/*                                                           6.2.1        */
55@/*  AUTHOR                                                                */
56@/*                                                                        */
57@/*    William E. Lamie, Microsoft Corporation                             */
58@/*                                                                        */
59@/*  DESCRIPTION                                                           */
60@/*                                                                        */
61@/*    This function is responsible for changing the interrupt lockout     */
62@/*    posture of the system.                                              */
63@/*                                                                        */
64@/*  INPUT                                                                 */
65@/*                                                                        */
66@/*    new_posture                           New interrupt lockout posture */
67@/*                                                                        */
68@/*  OUTPUT                                                                */
69@/*                                                                        */
70@/*    old_posture                           Old interrupt lockout posture */
71@/*                                                                        */
72@/*  CALLS                                                                 */
73@/*                                                                        */
74@/*    None                                                                */
75@/*                                                                        */
76@/*  CALLED BY                                                             */
77@/*                                                                        */
78@/*    Application Code                                                    */
79@/*                                                                        */
80@/*  RELEASE HISTORY                                                       */
81@/*                                                                        */
82@/*    DATE              NAME                      DESCRIPTION             */
83@/*                                                                        */
84@/*  09-30-2020     William E. Lamie         Initial Version 6.1           */
85@/*  03-08-2023     Cindy Deng               Modified comment(s), added    */
86@/*                                            #include tx_user.h,         */
87@/*                                            resulting in version 6.2.1  */
88@/*                                                                        */
89@/**************************************************************************/
90@UINT   _tx_thread_interrupt_control(UINT new_posture)
91@{
92    .global _tx_thread_interrupt_control
93    .type   _tx_thread_interrupt_control,function
94_tx_thread_interrupt_control:
95@
96@    /* Pickup current interrupt lockout posture.  */
97@
98    MRS     r3, CPSR                    @ Pickup current CPSR
99    MOV     r2, #INT_MASK               @ Build interrupt mask
100    AND     r1, r3, r2                  @ Clear interrupt lockout bits
101    ORR     r1, r1, r0                  @ Or-in new interrupt lockout bits
102@
103@    /* Apply the new interrupt posture.  */
104@
105    MSR     CPSR, r1                    @ Setup new CPSR
106    BIC     r0, r3, r2                  @ Return previous interrupt mask
107#ifdef __THUMB_INTERWORK
108    BX      lr                          @ Return to caller
109#else
110    MOV     pc, lr                      @ Return to caller
111#endif
112@}
113
114