/* CMSIS-DAP Interface Firmware
 * Copyright (c) 2009-2013 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef CORTEX_M_H
#define CORTEX_M_H

#include <stdint.h>

typedef int cortex_int_state_t;

__attribute__((always_inline))
static cortex_int_state_t cortex_int_get_and_disable(void)
{
    cortex_int_state_t state;
    state = __disable_irq();
    return state;
}

__attribute__((always_inline))
static void cortex_int_restore(cortex_int_state_t state)
{
    if (!state) {
        __enable_irq();
    }
}

#endif

Add functions to disable and restore interrupts
Add functions to disable and restore interrupts

Add the two functions cortex_int_get_and_disable and
cortex_int_restore.  This allows interrupts to be disabled globally.
