120 lines
4.8 KiB
C
120 lines
4.8 KiB
C
/****************************************************************************
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* arch/arm/src/armv7-a/arm.h
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* References:
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* "Cortex-A5™ MPCore, Technical Reference Manual", Revision: r0p1,
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* Copyright © 2010 ARM. All rights reserved. ARM DDI 0434B (ID101810)
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* "ARM® Architecture Reference Manual, ARMv7-A and ARMv7-R edition",
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* Copyright © 1996-1998, 2000, 2004-2012 ARM. All rights reserved.
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* ARM DDI 0406C.b (ID072512)
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*/
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#ifndef __ARCH_ARM_SRC_ARMV7_A_ARM_H
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#define __ARCH_ARM_SRC_ARMV7_A_ARM_H
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* ARMv7-A ******************************************************************/
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/* PSR bits */
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#define PSR_MODE_SHIFT (0) /* Bits 0-4: Mode fields */
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#define PSR_MODE_MASK (31 << PSR_MODE_SHIFT)
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# define PSR_MODE_USR (16 << PSR_MODE_SHIFT) /* User mode */
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# define PSR_MODE_FIQ (17 << PSR_MODE_SHIFT) /* FIQ mode */
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# define PSR_MODE_IRQ (18 << PSR_MODE_SHIFT) /* IRQ mode */
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# define PSR_MODE_SVC (19 << PSR_MODE_SHIFT) /* Supervisor mode */
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# define PSR_MODE_MON (22 << PSR_MODE_SHIFT) /* Monitor mode */
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# define PSR_MODE_ABT (23 << PSR_MODE_SHIFT) /* Abort mode */
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# define PSR_MODE_HYP (26 << PSR_MODE_SHIFT) /* Hyp mode */
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# define PSR_MODE_UND (27 << PSR_MODE_SHIFT) /* Undefined mode */
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# define PSR_MODE_SYS (31 << PSR_MODE_SHIFT) /* System mode */
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#define PSR_T_BIT (1 << 5) /* Bit 5: Thumb execution state bit */
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#define PSR_MASK_SHIFT (6) /* Bits 6-8: Mask Bits */
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#define PSR_MASK_MASK (7 << PSR_GE_SHIFT)
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# define PSR_F_BIT (1 << 6) /* Bit 6: FIQ mask bit */
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# define PSR_I_BIT (1 << 7) /* Bit 7: IRQ mask bit */
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# define PSR_A_BIT (1 << 8) /* Bit 8: Asynchronous abort mask */
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#define PSR_E_BIT (1 << 9) /* Bit 9: Endianness execution state bit */
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#define PSR_GE_SHIFT (16) /* Bits 16-19: Greater than or Equal flags */
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#define PSR_GE_MASK (15 << PSR_GE_SHIFT)
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/* Bits 20-23: Reserved. RAZ/SBZP */
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#define PSR_J_BIT (1 << 24) /* Bit 24: Jazelle state bit */
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#define PSR_IT01_SHIFT (25) /* Bits 25-26: If-Then execution state bits IT[0:1] */
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#define PSR_IT01_MASK (3 << PSR_IT01_SHIFT)
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#define PSR_Q_BIT (1 << 27) /* Bit 27: Cumulative saturation bit */
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#define PSR_V_BIT (1 << 28) /* Bit 28: Overflow condition flag */
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#define PSR_C_BIT (1 << 29) /* Bit 29: Carry condition flag */
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#define PSR_Z_BIT (1 << 30) /* Bit 30: Zero condition flag */
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#define PSR_N_BIT (1 << 31) /* Bit 31: Negative condition flag */
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#endif /* __ASSEMBLY__ */
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: arm_data_initialize
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*
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* Description:
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* Clear all of .bss to zero; set .data to the correct initial values
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void arm_data_initialize(void);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_ARMV7_A_ARM_H */
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