src/rtos/rtos_embkernel_stackings.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2011 by Broadcom Corporation                            *
   5  *   Evan Hunter - ehunter@broadcom.com                                    *
   6  ***************************************************************************/
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include "config.h"
  10 #endif
  11
  12 #include "rtos.h"
  13 #include "target/armv7m.h"
  14 #include "rtos_standard_stackings.h"
  15 #include "rtos_embkernel_stackings.h"
  16
  17 static const struct stack_register_offset rtos_embkernel_cortex_m_stack_offsets[ARMV7M_NUM_CORE_REGS] = {
  18         { ARMV7M_R0,   0x24, 32 },              /* r0   */
  19         { ARMV7M_R1,   0x28, 32 },              /* r1   */
  20         { ARMV7M_R2,   0x2c, 32 },              /* r2   */
  21         { ARMV7M_R3,   0x30, 32 },              /* r3   */
  22         { ARMV7M_R4,   0x00, 32 },              /* r4   */
  23         { ARMV7M_R5,   0x04, 32 },              /* r5   */
  24         { ARMV7M_R6,   0x08, 32 },              /* r6   */
  25         { ARMV7M_R7,   0x0c, 32 },              /* r7   */
  26         { ARMV7M_R8,   0x10, 32 },              /* r8   */
  27         { ARMV7M_R9,   0x14, 32 },              /* r9   */
  28         { ARMV7M_R10,  0x18, 32 },              /* r10  */
  29         { ARMV7M_R11,  0x1c, 32 },              /* r11  */
  30         { ARMV7M_R12,  0x34, 32 },              /* r12  */
  31         { ARMV7M_R13,  -2,   32 },          /* sp   */
  32         { ARMV7M_R14,  0x38, 32 },              /* lr   */
  33         { ARMV7M_PC,   0x3c, 32 },              /* pc   */
  34         { ARMV7M_XPSR, 0x40, 32 },              /* xPSR */
  35 };
  36
  37 const struct rtos_register_stacking rtos_embkernel_cortex_m_stacking = {
  38         .stack_registers_size = 0x40,
  39         .stack_growth_direction = -1,
  40         .num_output_registers = ARMV7M_NUM_CORE_REGS,
  41         .calculate_process_stack = rtos_generic_stack_align8,
  42         .register_offsets = rtos_embkernel_cortex_m_stack_offsets
  43 };