1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 /***************************************************************************
4 * Copyright (C) 2014 by Marian Cingel *
5 * cingel.marian@gmail.com *
6 ***************************************************************************/
13 #include "target/armv7m.h"
17 * standard exception stack
18 * ( stack base, higher memory address )
27 * extended stack in svc_pending handler
38 * - SHPR3 - 0x00 ( contains pend_svc exception priority )
39 * ( stack head, lower address, stored in 'task->STACK_PTR' )
42 static const struct stack_register_offset rtos_mqx_arm_v7m_stack_offsets[ARMV7M_NUM_CORE_REGS] = {
43 { ARMV7M_R0, 0x2C, 32 }, /* r0 */
44 { ARMV7M_R1, 0x30, 32 }, /* r1 */
45 { ARMV7M_R2, 0x34, 32 }, /* r2 */
46 { ARMV7M_R3, 0x38, 32 }, /* r3 */
47 { ARMV7M_R4, 0x08, 32 }, /* r4 */
48 { ARMV7M_R5, 0x0C, 32 }, /* r5 */
49 { ARMV7M_R6, 0x10, 32 }, /* r6 */
50 { ARMV7M_R7, 0x14, 32 }, /* r7 */
51 { ARMV7M_R8, 0x18, 32 }, /* r8 */
52 { ARMV7M_R9, 0x1C, 32 }, /* r9 */
53 { ARMV7M_R10, 0x20, 32 }, /* r10 */
54 { ARMV7M_R11, 0x24, 32 }, /* r11 */
55 { ARMV7M_R12, 0x3C, 32 }, /* r12 */
56 { ARMV7M_R13, -2, 32 }, /* sp */
57 { ARMV7M_R14, 0x28, 32 }, /* lr */
58 { ARMV7M_PC, 0x44, 32 }, /* pc */
59 { ARMV7M_XPSR, 0x48, 32 }, /* xPSR */
62 const struct rtos_register_stacking rtos_mqx_arm_v7m_stacking = {
63 .stack_registers_size = 0x4C, /* calculate offset base address */
64 .stack_growth_direction = -1,
65 .num_output_registers = ARMV7M_NUM_CORE_REGS,
66 .register_offsets = rtos_mqx_arm_v7m_stack_offsets