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/************************************************************************************
* arch/arm/src/armv6-m/psr.h
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_COMMON_ARMV6_M_PSR_H
#define __ARCH_ARM_SRC_COMMON_ARMV6_M_PSR_H
/************************************************************************************
* Included Files
************************************************************************************/
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Application Program Status Register (APSR) */
#define ARMV6M_APSR_V (1 << 28) /* Bit 28: Overflow flag */
#define ARMV6M_APSR_C (1 << 29) /* Bit 29: Carry/borrow flag */
#define ARMV6M_APSR_Z (1 << 30) /* Bit 30: Zero flag */
#define ARMV6M_APSR_N (1 << 31) /* Bit 31: Negative, less than flag */
/* Interrupt Program Status Register (IPSR) */
#define ARMV6M_IPSR_ISR_SHIFT 0 /* Bits 5-0: ISR number */
#define ARMV6M_IPSR_ISR_MASK (31 << ARMV6M_IPSR_ISR_SHIFT)
/* Execution PSR Register (EPSR) */
#define ARMV6M_EPSR_T (1 << 24) /* Bit 24: T-bit */
/* Save xPSR bits */
#define ARMV6M_XPSR_ISR_SHIFT ARMV6M_IPSR_ISR_SHIFT
#define ARMV6M_XPSR_ISR_MASK ARMV6M_IPSR_ISR_MASK
#define ARMV6M_XPSR_T ARMV6M_EPSR_T
#define ARMV6M_XPSR_V ARMV6M_APSR_V
#define ARMV6M_XPSR_C ARMV6M_APSR_C
#define ARMV6M_XPSR_Z ARMV6M_APSR_Z
#define ARMV6M_XPSR_N ARMV6M_APSR_N
/************************************************************************************
* Inline Functions
************************************************************************************/
#endif /* __ARCH_ARM_SRC_COMMON_ARMV6_M_PSR_H */
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