tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/TOOLCHAIN_ARM_STD/sys.cpp

   1 /* mbed Microcontroller Library - stackheap
   2  * Copyright (C) 2009-2011 ARM Limited. All rights reserved.
   3  *
   4  * Setup a fixed single stack/heap memory model,
   5  *  between the top of the RW/ZI region and the stackpointer
   6  */
   7
   8 #ifdef __cplusplus
   9 extern "C" {
  10 #endif
  11
  12 #include <rt_misc.h>
  13 #include <stdint.h>
  14
  15 extern char Image$$RW_IRAM1$$ZI$$Limit[];
  16
  17 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
  18     uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
  19     uint32_t sp_limit = __current_sp();
  20
  21     zi_limit = (zi_limit + 7) & ~0x7;    // ensure zi_limit is 8-byte aligned
  22
  23     struct __initial_stackheap r;
  24     r.heap_base = zi_limit;
  25     r.heap_limit = sp_limit;
  26     return r;
  27 }
  28
  29 #ifdef __cplusplus
  30 }
  31 #endif