/**************************************************************************/
/*                                                                        */
/*       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                                                              */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/
#ifdef TX_INCLUDE_USER_DEFINE_FILE
#include "tx_user.h"
#endif

/* Define the 16-bit Thumb mode veneer for _tx_thread_interrupt_disable for
   applications calling this function from to 16-bit Thumb mode.  */

    .text
    .align 2
    .global $_tx_thread_interrupt_disable
$_tx_thread_interrupt_disable:
        .thumb
     BX        pc                               // Switch to 32-bit mode
     NOP                                        //
    .arm
     STMFD     sp!, {lr}                        // Save return address
     BL        _tx_thread_interrupt_disable     // Call _tx_thread_interrupt_disable function
     LDMFD     sp!, {lr}                        // Recover saved return address
     BX        lr                               // Return to 16-bit caller


    .text
    .align 2
/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _tx_thread_interrupt_disable                         ARMv7-A        */
/*                                                           6.3.0        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    William E. Lamie, Microsoft Corporation                             */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function is responsible for disabling interrupts               */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  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           */
/*  04-25-2022     Zhen Kong                Updated comments,             */
/*                                            resulting in version 6.1.11 */
/*  10-31-2023     Tiejun Zhou              Modified comment(s), added    */
/*                                            #include tx_user.h,         */
/*                                            resulting in version 6.3.0  */
/*                                                                        */
/**************************************************************************/
    .global _tx_thread_interrupt_disable
    .type   _tx_thread_interrupt_disable,function
_tx_thread_interrupt_disable:

    /* Pickup current interrupt lockout posture.  */

    MRS     r0, CPSR                            // Pickup current CPSR

    /* Mask interrupts.  */

#ifdef TX_ENABLE_FIQ_SUPPORT
    CPSID   if                                  // Disable IRQ and FIQ
#else
    CPSID   i                                   // Disable IRQ
#endif

#ifdef __THUMB_INTERWORK
    BX      lr                                  // Return to caller
#else
    MOV     pc, lr                              // Return to caller
#endif