68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/***************************************************************************
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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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#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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{ ARMV7M_R0, 0x2C, 32 }, /* r0 */
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{ ARMV7M_R1, 0x30, 32 }, /* r1 */
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{ ARMV7M_R2, 0x34, 32 }, /* r2 */
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{ ARMV7M_R3, 0x38, 32 }, /* r3 */
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{ ARMV7M_R4, 0x08, 32 }, /* r4 */
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{ ARMV7M_R5, 0x0C, 32 }, /* r5 */
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{ ARMV7M_R6, 0x10, 32 }, /* r6 */
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{ ARMV7M_R7, 0x14, 32 }, /* r7 */
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{ ARMV7M_R8, 0x18, 32 }, /* r8 */
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{ ARMV7M_R9, 0x1C, 32 }, /* r9 */
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{ ARMV7M_R10, 0x20, 32 }, /* r10 */
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{ ARMV7M_R11, 0x24, 32 }, /* r11 */
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{ ARMV7M_R12, 0x3C, 32 }, /* r12 */
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{ ARMV7M_R13, -2, 32 }, /* sp */
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{ ARMV7M_R14, 0x28, 32 }, /* lr */
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{ ARMV7M_PC, 0x44, 32 }, /* pc */
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{ ARMV7M_xPSR, 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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.stack_registers_size = 0x4C, /* calculate offset base address */
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.stack_growth_direction = -1,
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.num_output_registers = ARMV7M_NUM_CORE_REGS,
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.register_offsets = rtos_mqx_arm_v7m_stack_offsets
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};
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