82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/***************************************************************************
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* Copyright (C) 2014 by Marian Cingel *
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* cingel.marian@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "rtos.h"
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#include "target/armv7m.h"
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/*
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* standard exception stack
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* ( stack base, higher memory address )
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* - xpsr - 0x48
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* - pc - 0x44
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* - lr - 0x40
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* - r12 - 0x3C
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* - r3 - 0x38
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* - r2 - 0x34
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* - r1 - 0x30
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* - r0 - 0x2C
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* extended stack in svc_pending handler
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* - lr - 0x28
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* - r11 - 0x24
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* - r10 - 0x20
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* - r9 - 0x1C
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* - r8 - 0x18
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* - r7 - 0x14
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* - r6 - 0x10
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* - r5 - 0x0C
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* - r4 - 0x08
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* - BASEPRI - 0x04
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* - SHPR3 - 0x00 ( contains pend_svc exception priority )
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* ( stack head, lower address, stored in 'task->STACK_PTR' )
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*/
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static const struct stack_register_offset rtos_mqx_arm_v7m_stack_offsets[ARMV7M_NUM_CORE_REGS] = {
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{ 0x2C, 32 }, /* r0 */
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{ 0x30, 32 }, /* r1 */
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{ 0x34, 32 }, /* r2 */
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{ 0x38, 32 }, /* r3 */
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{ 0x08, 32 }, /* r4 */
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{ 0x0C, 32 }, /* r5 */
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{ 0x10, 32 }, /* r6 */
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{ 0x14, 32 }, /* r7 */
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{ 0x18, 32 }, /* r8 */
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{ 0x1C, 32 }, /* r9 */
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{ 0x20, 32 }, /* r10 */
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{ 0x24, 32 }, /* r11 */
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{ 0x3C, 32 }, /* r12 */
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{ -2 , 32 }, /* sp */
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{ 0x28, 32 }, /* lr */
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{ 0x44, 32 }, /* pc */
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{ 0x48, 32 }, /* xPSR */
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};
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const struct rtos_register_stacking rtos_mqx_arm_v7m_stacking = {
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0x4C, /* stack_registers_size, calculate offset base address */
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-1, /* stack_growth_direction */
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ARMV7M_NUM_CORE_REGS, /* num_output_registers */
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NULL, /* stack_alignment */
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rtos_mqx_arm_v7m_stack_offsets /* register_offsets */
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};
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