1;/***************************************************************************
2; * Copyright (c) 2024 Microsoft Corporation
3; *
4; * This program and the accompanying materials are made available under the
5; * terms of the MIT License which is available at
6; * https://opensource.org/licenses/MIT.
7; *
8; * SPDX-License-Identifier: MIT
9; **************************************************************************/
10;
11;
12;/**************************************************************************/
13;/**************************************************************************/
14;/**                                                                       */
15;/** ThreadX Component                                                     */
16;/**                                                                       */
17;/**   Thread                                                              */
18;/**                                                                       */
19;/**************************************************************************/
20;/**************************************************************************/
21;
22;#define TX_SOURCE_CODE
23;
24;
25;/* Include necessary system files.  */
26;
27;#include "tx_api.h"
28;#include "tx_thread.h"
29;
30;
31        AREA ||.text||, CODE, READONLY
32;/**************************************************************************/
33;/*                                                                        */
34;/*  FUNCTION                                               RELEASE        */
35;/*                                                                        */
36;/*    _tx_thread_interrupt_restore                        ARM11/AC5       */
37;/*                                                            6.1         */
38;/*  AUTHOR                                                                */
39;/*                                                                        */
40;/*    William E. Lamie, Microsoft Corporation                             */
41;/*                                                                        */
42;/*  DESCRIPTION                                                           */
43;/*                                                                        */
44;/*    This function is responsible for restoring interrupts to the state  */
45;/*    returned by a previous _tx_thread_interrupt_disable call.           */
46;/*                                                                        */
47;/*  INPUT                                                                 */
48;/*                                                                        */
49;/*    old_posture                           Old interrupt lockout posture */
50;/*                                                                        */
51;/*  OUTPUT                                                                */
52;/*                                                                        */
53;/*    None                                                                */
54;/*                                                                        */
55;/*  CALLS                                                                 */
56;/*                                                                        */
57;/*    None                                                                */
58;/*                                                                        */
59;/*  CALLED BY                                                             */
60;/*                                                                        */
61;/*    Application Code                                                    */
62;/*                                                                        */
63;/*  RELEASE HISTORY                                                       */
64;/*                                                                        */
65;/*    DATE              NAME                      DESCRIPTION             */
66;/*                                                                        */
67;/*  09-30-2020     William E. Lamie         Initial Version 6.1           */
68;/*                                                                        */
69;/**************************************************************************/
70;UINT   _tx_thread_interrupt_restore(UINT old_posture)
71;{
72    EXPORT  _tx_thread_interrupt_restore
73_tx_thread_interrupt_restore
74;
75;    /* Apply the new interrupt posture.  */
76;
77    MSR     CPSR_cxsf, r0                       ; Setup new CPSR
78    IF  {INTER} = {TRUE}
79    BX      lr                                  ; Return to caller
80    ELSE
81    MOV     pc, lr                              ; Return to caller
82    ENDIF
83;}
84;
85    END
86
87