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nuttx/arch/arm/include/armv7-m/irq_cmnvector.h

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/****************************************************************************
* arch/arm/include/armv7-m/irq_cmnvector.h
*
* Copyright (C) 2012 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_INCLUDE_ARMV7_M_IRQ_CMNVECTOR_H
#define __ARCH_ARM_INCLUDE_ARMV7_M_IRQ_CMNVECTOR_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* IRQ Stack Frame Format: */
/* The following additional registers are stored by the interrupt handling
* logic.
*/
#define REG_R13 (0) /* R13 = SP at time of interrupt */
#ifdef CONFIG_ARMV7M_USEBASEPRI
# define REG_BASEPRI (1) /* BASEPRI */
#else
# define REG_PRIMASK (1) /* PRIMASK */
#endif
#define REG_R4 (2) /* R4 */
#define REG_R5 (3) /* R5 */
#define REG_R6 (4) /* R6 */
#define REG_R7 (5) /* R7 */
#define REG_R8 (6) /* R8 */
#define REG_R9 (7) /* R9 */
#define REG_R10 (8) /* R10 */
#define REG_R11 (9) /* R11 */
#define REG_EXC_RETURN (10) /* EXC_RETURN */
#define SW_INT_REGS (11)
#ifdef CONFIG_ARCH_FPU
/* If the MCU supports a floating point unit, then it will be necessary
* to save the state of the non-volatile registers before calling code
* that may save and overwrite them.
*/
# define REG_S16 (SW_INT_REGS+0) /* S16 */
# define REG_S17 (SW_INT_REGS+1) /* S17 */
# define REG_S18 (SW_INT_REGS+2) /* S18 */
# define REG_S19 (SW_INT_REGS+3) /* S19 */
# define REG_S20 (SW_INT_REGS+4) /* S20 */
# define REG_S21 (SW_INT_REGS+5) /* S21 */
# define REG_S22 (SW_INT_REGS+6) /* S22 */
# define REG_S23 (SW_INT_REGS+7) /* S23 */
# define REG_S24 (SW_INT_REGS+8) /* S24 */
# define REG_S25 (SW_INT_REGS+9) /* S25 */
# define REG_S26 (SW_INT_REGS+10) /* S26 */
# define REG_S27 (SW_INT_REGS+11) /* S27 */
# define REG_S28 (SW_INT_REGS+12) /* S28 */
# define REG_S29 (SW_INT_REGS+13) /* S29 */
# define REG_S30 (SW_INT_REGS+14) /* S30 */
# define REG_S31 (SW_INT_REGS+15) /* S31 */
# define SW_FPU_REGS (16)
#else
# define SW_FPU_REGS (0)
#endif
/* The total number of registers saved by software */
#define SW_XCPT_REGS (SW_INT_REGS + SW_FPU_REGS)
#define SW_XCPT_SIZE (4 * SW_XCPT_REGS)
/* On entry into an IRQ, the hardware automatically saves the following
* registers on the stack in this (address) order:
*/
#define REG_R0 (SW_XCPT_REGS+0) /* R0 */
#define REG_R1 (SW_XCPT_REGS+1) /* R1 */
#define REG_R2 (SW_XCPT_REGS+2) /* R2 */
#define REG_R3 (SW_XCPT_REGS+3) /* R3 */
#define REG_R12 (SW_XCPT_REGS+4) /* R12 */
#define REG_R14 (SW_XCPT_REGS+5) /* R14 = LR */
#define REG_R15 (SW_XCPT_REGS+6) /* R15 = PC */
#define REG_XPSR (SW_XCPT_REGS+7) /* xPSR */
#define HW_INT_REGS (8)
#ifdef CONFIG_ARCH_FPU
/* If the FPU is enabled, the hardware also saves the volatile FP registers.
*/
# define REG_S0 (SW_XCPT_REGS+8) /* S0 */
# define REG_S1 (SW_XCPT_REGS+9) /* S1 */
# define REG_S2 (SW_XCPT_REGS+10) /* S2 */
# define REG_S3 (SW_XCPT_REGS+11) /* S3 */
# define REG_S4 (SW_XCPT_REGS+12) /* S4 */
# define REG_S5 (SW_XCPT_REGS+13) /* S5 */
# define REG_S6 (SW_XCPT_REGS+14) /* S6 */
# define REG_S7 (SW_XCPT_REGS+15) /* S7 */
# define REG_S8 (SW_XCPT_REGS+16) /* S8 */
# define REG_S9 (SW_XCPT_REGS+17) /* S9 */
# define REG_S10 (SW_XCPT_REGS+18) /* S10 */
# define REG_S11 (SW_XCPT_REGS+19) /* S11 */
# define REG_S12 (SW_XCPT_REGS+20) /* S12 */
# define REG_S13 (SW_XCPT_REGS+21) /* S13 */
# define REG_S14 (SW_XCPT_REGS+22) /* S14 */
# define REG_S15 (SW_XCPT_REGS+23) /* S15 */
# define REG_FPSCR (SW_XCPT_REGS+24) /* FPSCR */
# define REG_FPReserved (SW_XCPT_REGS+25) /* Reserved */
# define HW_FPU_REGS (18)
#else
# define HW_FPU_REGS (0)
#endif
#define HW_XCPT_REGS (HW_INT_REGS + HW_FPU_REGS)
#define HW_XCPT_SIZE (4 * HW_XCPT_REGS)
#define XCPTCONTEXT_REGS (HW_XCPT_REGS + SW_XCPT_REGS)
#define XCPTCONTEXT_SIZE (4 * XCPTCONTEXT_REGS)
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Inline functions
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#endif /* __ARCH_ARM_INCLUDE_ARMV7_M_IRQ_CMNVECTOR_H */
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