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   1 /***************************************************************************
   2  *                                                                         *
   3  *   This program is free software; you can redistribute it and/or modify  *
   4  *   it under the terms of the GNU General Public License as published by  *
   5  *   the Free Software Foundation; either version 2 of the License, or     *
   6  *   (at your option) any later version.                                   *
   7  *                                                                         *
   8  *   This program is distributed in the hope that it will be useful,       *
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  11  *   GNU General Public License for more details.                          *
  12  *                                                                         *
  13  *   You should have received a copy of the GNU General Public License     *
  14  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  15  ***************************************************************************/
  16
  17 #ifdef HAVE_CONFIG_H
  18 #include "config.h"
  19 #endif
  20
  21 #include "rtos.h"
  22 #include "rtos_standard_stackings.h"
  23 #include "target/armv7m.h"
  24
  25 static const struct stack_register_offset rtos_ecos_cortex_m3_stack_offsets[ARMV7M_NUM_CORE_REGS] = {
  26         { ARMV7M_R0,   0x0c, 32 },              /* r0   */
  27         { ARMV7M_R1,   0x10, 32 },              /* r1   */
  28         { ARMV7M_R2,   0x14, 32 },              /* r2   */
  29         { ARMV7M_R3,   0x18, 32 },              /* r3   */
  30         { ARMV7M_R4,   0x1c, 32 },              /* r4   */
  31         { ARMV7M_R5,   0x20, 32 },              /* r5   */
  32         { ARMV7M_R6,   0x24, 32 },              /* r6   */
  33         { ARMV7M_R7,   0x28, 32 },              /* r7   */
  34         { ARMV7M_R8,   0x2c, 32 },              /* r8   */
  35         { ARMV7M_R9,   0x30, 32 },              /* r9   */
  36         { ARMV7M_R10,  0x34, 32 },              /* r10  */
  37         { ARMV7M_R11,  0x38, 32 },              /* r11  */
  38         { ARMV7M_R12,  0x3c, 32 },              /* r12  */
  39         { ARMV7M_R13,  -2,   32 },              /* sp   */
  40         { ARMV7M_R14,  -1,   32 },              /* lr   */
  41         { ARMV7M_PC,   0x40, 32 },              /* pc   */
  42         { ARMV7M_xPSR, -1,   32 },              /* xPSR */
  43 };
  44
  45 const struct rtos_register_stacking rtos_ecos_cortex_m3_stacking = {
  46         .stack_registers_size = 0x44,
  47         .stack_growth_direction = -1,
  48         .num_output_registers = ARMV7M_NUM_CORE_REGS,
  49         .calculate_process_stack = rtos_generic_stack_align8,
  50         .register_offsets = rtos_ecos_cortex_m3_stack_offsets
  51 };