/************************************************************************************ * arch/arm/src/armv7-m/psr.h * * Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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_ARMV7_M_PSR_H #define __ARCH_ARM_SRC_COMMON_ARMV7_M_PSR_H /************************************************************************************ * Included Files ************************************************************************************/ /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ /* Application Program Status Register (APSR) */ #define ARMV7M_APSR_Q (1 << 27) /* Bit 27: Sticky saturation flag */ #define ARMV7M_APSR_V (1 << 28) /* Bit 28: Overflow flag */ #define ARMV7M_APSR_C (1 << 29) /* Bit 29: Carry/borrow flag */ #define ARMV7M_APSR_Z (1 << 30) /* Bit 30: Zero flag */ #define ARMV7M_APSR_N (1 << 31) /* Bit 31: Negative, less than flag */ /* Interrupt Program Status Register (IPSR) */ #define ARMV7M_IPSR_ISR_SHIFT 0 /* Bits 8-0: ISR number */ #define ARMV7M_IPSR_ISR_MASK (0x1ff << ARMV7M_IPSR_ISR_SHIFT) /* Execution PSR Register (EPSR) */ #define ARMV7M_EPSR_ICIIT1_SHIFT 10 /* Bits 15-10: Interrupt-Continuable-Instruction/If-Then bits */ #define ARMV7M_EPSR_ICIIT1_MASK (3 << ARMV7M_EPSR_ICIIT1_SHIFT) #define ARMV7M_EPSR_T (1 << 24) /* Bit 24: T-bit */ #define ARMV7M_EPSR_ICIIT2_SHIFT 25 /* Bits 26-25: Interrupt-Continuable-Instruction/If-Then bits */ #define ARMV7M_EPSR_ICIIT2_MASK (3 << ARMV7M_EPSR_ICIIT2_SHIFT) /* Save xPSR bits */ #define ARMV7M_XPSR_ISR_SHIFT ARMV7M_IPSR_ISR_SHIFT #define ARMV7M_XPSR_ISR_MASK ARMV7M_IPSR_ISR_MASK #define ARMV7M_XPSR_ICIIT1_SHIFT ARMV7M_EPSR_ICIIT1_SHIFT/ #define ARMV7M_XPSR_ICIIT1_MASK ARMV7M_EPSR_ICIIT1_MASK #define ARMV7M_XPSR_T ARMV7M_EPSR_T #define ARMV7M_XPSR_ICIIT2_SHIFT ARMV7M_EPSR_ICIIT2_SHIFT #define ARMV7M_XPSR_ICIIT2_MASK ARMV7M_EPSR_ICIIT2_MASK #define ARMV7M_XPSR_Q ARMV7M_APSR_Q #define ARMV7M_XPSR_V ARMV7M_APSR_V #define ARMV7M_XPSR_C ARMV7M_APSR_C #define ARMV7M_XPSR_Z ARMV7M_APSR_Z #define ARMV7M_XPSR_N ARMV7M_APSR_N /************************************************************************************ * Inline Functions ************************************************************************************/ #endif /* __ARCH_ARM_SRC_COMMON_ARMV7_M_PSR_H */