7a9457bb07
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5145 42af7a65-404d-4744-a932-0658087f49c3
88 lines
4.2 KiB
C
88 lines
4.2 KiB
C
/************************************************************************************
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* arch/arm/src/armv7-m/psr.h
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*
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* Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_COMMON_ARMV7_M_PSR_H
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#define __ARCH_ARM_SRC_COMMON_ARMV7_M_PSR_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Application Program Status Register (APSR) */
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#define ARMV7M_APSR_Q (1 << 27) /* Bit 27: Sticky saturation flag */
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#define ARMV7M_APSR_V (1 << 28) /* Bit 28: Overflow flag */
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#define ARMV7M_APSR_C (1 << 29) /* Bit 29: Carry/borrow flag */
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#define ARMV7M_APSR_Z (1 << 30) /* Bit 30: Zero flag */
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#define ARMV7M_APSR_N (1 << 31) /* Bit 31: Negative, less than flag */
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/* Interrupt Program Status Register (IPSR) */
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#define ARMV7M_IPSR_ISR_SHIFT 0 /* Bits 8-0: ISR number */
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#define ARMV7M_IPSR_ISR_MASK (0x1ff << ARMV7M_IPSR_ISR_SHIFT)
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/* Execution PSR Register (EPSR) */
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#define ARMV7M_EPSR_ICIIT1_SHIFT 10 /* Bits 15-10: Interrupt-Continuable-Instruction/If-Then bits */
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#define ARMV7M_EPSR_ICIIT1_MASK (3 << ARMV7M_EPSR_ICIIT1_SHIFT)
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#define ARMV7M_EPSR_T (1 << 24) /* Bit 24: T-bit */
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#define ARMV7M_EPSR_ICIIT2_SHIFT 25 /* Bits 26-25: Interrupt-Continuable-Instruction/If-Then bits */
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#define ARMV7M_EPSR_ICIIT2_MASK (3 << ARMV7M_EPSR_ICIIT2_SHIFT)
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/* Save xPSR bits */
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#define ARMV7M_XPSR_ISR_SHIFT ARMV7M_IPSR_ISR_SHIFT
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#define ARMV7M_XPSR_ISR_MASK ARMV7M_IPSR_ISR_MASK
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#define ARMV7M_XPSR_ICIIT1_SHIFT ARMV7M_EPSR_ICIIT1_SHIFT/
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#define ARMV7M_XPSR_ICIIT1_MASK ARMV7M_EPSR_ICIIT1_MASK
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#define ARMV7M_XPSR_T ARMV7M_EPSR_T
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#define ARMV7M_XPSR_ICIIT2_SHIFT ARMV7M_EPSR_ICIIT2_SHIFT
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#define ARMV7M_XPSR_ICIIT2_MASK ARMV7M_EPSR_ICIIT2_MASK
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#define ARMV7M_XPSR_Q ARMV7M_APSR_Q
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#define ARMV7M_XPSR_V ARMV7M_APSR_V
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#define ARMV7M_XPSR_C ARMV7M_APSR_C
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#define ARMV7M_XPSR_Z ARMV7M_APSR_Z
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#define ARMV7M_XPSR_N ARMV7M_APSR_N
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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#endif /* __ARCH_ARM_SRC_COMMON_ARMV7_M_PSR_H */
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