101 lines
5.3 KiB
Plaintext
101 lines
5.3 KiB
Plaintext
;/***************************************************************************
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; * Copyright (c) 2024 Microsoft Corporation
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; *
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; * This program and the accompanying materials are made available under the
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; * terms of the MIT License which is available at
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; * https://opensource.org/licenses/MIT.
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; *
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; * SPDX-License-Identifier: MIT
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; **************************************************************************/
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;
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;
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;/**************************************************************************/
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;/**************************************************************************/
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;/** */
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;/** ThreadX Component */
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;/** */
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;/** Thread */
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;/** */
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;/**************************************************************************/
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;/**************************************************************************/
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;
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;#define TX_SOURCE_CODE
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;
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;
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;/* Include necessary system files. */
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;
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;#include "tx_api.h"
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;#include "tx_thread.h"
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;
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;
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.SECTION P,CODE
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;/**************************************************************************/
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;/* */
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;/* FUNCTION RELEASE */
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;/* */
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;/* _tx_thread_interrupt_control RXc2/CCRX */
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;/* 6.1.11 */
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;/* AUTHOR */
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;/* */
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;/* William E. Lamie, Microsoft Corporation */
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;/* */
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;/* DESCRIPTION */
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;/* */
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;/* This function is responsible for changing the interrupt lockout */
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;/* posture of the system. */
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;/* */
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;/* INPUT */
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;/* */
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;/* new_posture New interrupt lockout posture */
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;/* */
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;/* OUTPUT */
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;/* */
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;/* old_posture Old interrupt lockout posture */
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;/* */
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;/* CALLS */
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;/* */
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;/* None */
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;/* */
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;/* CALLED BY */
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;/* */
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;/* Application Code */
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;/* */
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;/* RELEASE HISTORY */
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;/* */
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;/* DATE NAME DESCRIPTION */
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;/* */
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;/* 12-30-2020 William E. Lamie Initial Version 6.1.3 */
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;/* 10-15-2021 William E. Lamie Modified comment(s), */
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;/* resulting in version 6.1.9 */
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;/* 01-31-2022 William E. Lamie Modified comment(s), */
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;/* resulting in version 6.1.10 */
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;/* 04-25-2022 William E. Lamie Modified comment(s), */
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;/* resulting in version 6.1.11 */
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;/* */
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;/**************************************************************************/
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;UINT _tx_thread_interrupt_control(UINT new_posture)
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;{
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.GLB __tx_thread_interrupt_control
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__tx_thread_interrupt_control:
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;
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; /* Pickup current interrupt lockout posture. */
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;
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MVFC PSW, R2 ; Save PSW to R2
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MOV.L R2, R3 ; Make a copy of PSW in r3
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;
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; /* Apply the new interrupt posture. */
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;
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BTST #16, R1 ; Test I bit of PSW of "new posture"
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BMNE #16, R2 ; Conditionally set I bit of intermediate posture
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MVTC R2, PSW ; Save intermediate posture to PSW
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MOV.L R3,R1 ; Get original SR
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RTS ; Return to caller
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;}
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.END
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