src/rtos/rtos_chibios_stackings.c

   1 /***************************************************************************
   2  *   Copyright (C) 2012 by Matthias Blaicher                               *
   3  *   Matthias Blaicher - matthias@blaicher.com                             *
   4  *                                                                         *
   5  *   Copyright (C) 2011 by Broadcom Corporation                            *
   6  *   Evan Hunter - ehunter@broadcom.com                                    *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  20  ***************************************************************************/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include "rtos.h"
  27 #include "target/armv7m.h"
  28
  29 static const struct stack_register_offset rtos_chibios_arm_v7m_stack_offsets[ARMV7M_NUM_CORE_REGS] = {
  30         { -1,   32 },           /* r0   */
  31         { -1,   32 },           /* r1   */
  32         { -1,   32 },           /* r2   */
  33         { -1,   32 },           /* r3   */
  34         { 0x00, 32 },           /* r4   */
  35         { 0x04, 32 },           /* r5   */
  36         { 0x08, 32 },           /* r6   */
  37         { 0x0c, 32 },           /* r7   */
  38         { 0x10, 32 },           /* r8   */
  39         { 0x14, 32 },           /* r9   */
  40         { 0x18, 32 },           /* r10  */
  41         { 0x1c, 32 },           /* r11  */
  42         { -1,   32 },           /* r12  */
  43         { -2,   32 },           /* sp   */
  44         { -1,   32 },           /* lr   */
  45         { 0x20, 32 },           /* pc   */
  46         { -1,   32 },           /* xPSR */
  47 };
  48
  49 const struct rtos_register_stacking rtos_chibios_arm_v7m_stacking = {
  50         0x24,                                   /* stack_registers_size */
  51         -1,                                             /* stack_growth_direction */
  52         ARMV7M_NUM_CORE_REGS,   /* num_output_registers */
  53         NULL,                                   /* stack_alignment */
  54         rtos_chibios_arm_v7m_stack_offsets      /* register_offsets */
  55 };
  56
  57 static const struct stack_register_offset rtos_chibios_arm_v7m_stack_offsets_w_fpu[ARMV7M_NUM_CORE_REGS] = {
  58         { -1,   32 },           /* r0   */
  59         { -1,   32 },           /* r1   */
  60         { -1,   32 },           /* r2   */
  61         { -1,   32 },           /* r3   */
  62         { 0x40, 32 },           /* r4   */
  63         { 0x44, 32 },           /* r5   */
  64         { 0x48, 32 },           /* r6   */
  65         { 0x4c, 32 },           /* r7   */
  66         { 0x50, 32 },           /* r8   */
  67         { 0x54, 32 },           /* r9   */
  68         { 0x58, 32 },           /* r10  */
  69         { 0x5c, 32 },           /* r11  */
  70         { -1,   32 },           /* r12  */
  71         { -2,   32 },           /* sp   */
  72         { -1,   32 },           /* lr   */
  73         { 0x60, 32 },           /* pc   */
  74         { -1,   32 },           /* xPSR */
  75 };
  76
  77 const struct rtos_register_stacking rtos_chibios_arm_v7m_stacking_w_fpu = {
  78         0x64,                                                                           /* stack_registers_size */
  79         -1,                                                                                     /* stack_growth_direction */
  80         ARMV7M_NUM_CORE_REGS,                                           /* num_output_registers */
  81         NULL,                                                                           /* stack_alignment */
  82         rtos_chibios_arm_v7m_stack_offsets_w_fpu        /* register_offsets */
  83 };