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   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Broadcom Corporation                            *
   3  *   Evan Hunter - ehunter@broadcom.com                                    *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  17  ***************************************************************************/
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22
  23 #include "rtos.h"
  24 #include "target/armv7m.h"
  25 #include "rtos_standard_stackings.h"
  26
  27 static const struct stack_register_offset rtos_embkernel_cortex_m_stack_offsets[ARMV7M_NUM_CORE_REGS] = {
  28         { ARMV7M_R0,   0x24, 32 },              /* r0   */
  29         { ARMV7M_R1,   0x28, 32 },              /* r1   */
  30         { ARMV7M_R2,   0x2c, 32 },              /* r2   */
  31         { ARMV7M_R3,   0x30, 32 },              /* r3   */
  32         { ARMV7M_R4,   0x00, 32 },              /* r4   */
  33         { ARMV7M_R5,   0x04, 32 },              /* r5   */
  34         { ARMV7M_R6,   0x08, 32 },              /* r6   */
  35         { ARMV7M_R7,   0x0c, 32 },              /* r7   */
  36         { ARMV7M_R8,   0x10, 32 },              /* r8   */
  37         { ARMV7M_R9,   0x14, 32 },              /* r9   */
  38         { ARMV7M_R10,  0x18, 32 },              /* r10  */
  39         { ARMV7M_R11,  0x1c, 32 },              /* r11  */
  40         { ARMV7M_R12,  0x34, 32 },              /* r12  */
  41         { ARMV7M_R13,  -2,   32 },          /* sp   */
  42         { ARMV7M_R14,  0x38, 32 },              /* lr   */
  43         { ARMV7M_PC,   0x3c, 32 },              /* pc   */
  44         { ARMV7M_xPSR, 0x40, 32 },              /* xPSR */
  45 };
  46
  47 const struct rtos_register_stacking rtos_embkernel_cortex_m_stacking = {
  48         .stack_registers_size = 0x40,
  49         .stack_growth_direction = -1,
  50         .num_output_registers = ARMV7M_NUM_CORE_REGS,
  51         .calculate_process_stack = rtos_generic_stack_align8,
  52         .register_offsets = rtos_embkernel_cortex_m_stack_offsets
  53 };