shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/cmsis/TARGET_NORDIC/TARGET_NRF51822/TOOLCHAIN_ARM_STD/sys.cpp@85:e1a8e879a6a9, 2014-02-07 (annotated)

Committer:
mbed_official
Date:
Fri Feb 07 18:00:11 2014 +0000
Revision:
85:e1a8e879a6a9
Synchronized with git revision 4b2b368a6a3b1f0fd33d99917981c67436c4aebe



Full URL: https://github.com/mbedmicro/mbed/commit/4b2b368a6a3b1f0fd33d99917981c67436c4aebe/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 85:e1a8e879a6a9 1 /* mbed Microcontroller Library - stackheap
mbed_official 85:e1a8e879a6a9 2 * Copyright (C) 2009-2011 ARM Limited. All rights reserved.
mbed_official 85:e1a8e879a6a9 3 *
mbed_official 85:e1a8e879a6a9 4 * Setup a fixed single stack/heap memory model,
mbed_official 85:e1a8e879a6a9 5 * between the top of the RW/ZI region and the stackpointer
mbed_official 85:e1a8e879a6a9 6 */
mbed_official 85:e1a8e879a6a9 7
mbed_official 85:e1a8e879a6a9 8 #ifdef __cplusplus
mbed_official 85:e1a8e879a6a9 9 extern "C" {
mbed_official 85:e1a8e879a6a9 10 #endif
mbed_official 85:e1a8e879a6a9 11
mbed_official 85:e1a8e879a6a9 12 #include <rt_misc.h>
mbed_official 85:e1a8e879a6a9 13 #include <stdint.h>
mbed_official 85:e1a8e879a6a9 14
mbed_official 85:e1a8e879a6a9 15 extern char Image$$RW_IRAM1$$ZI$$Limit[];
mbed_official 85:e1a8e879a6a9 16
mbed_official 85:e1a8e879a6a9 17 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
mbed_official 85:e1a8e879a6a9 18 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
mbed_official 85:e1a8e879a6a9 19 uint32_t sp_limit = __current_sp();
mbed_official 85:e1a8e879a6a9 20
mbed_official 85:e1a8e879a6a9 21 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
mbed_official 85:e1a8e879a6a9 22
mbed_official 85:e1a8e879a6a9 23 struct __initial_stackheap r;
mbed_official 85:e1a8e879a6a9 24 r.heap_base = zi_limit;
mbed_official 85:e1a8e879a6a9 25 r.heap_limit = sp_limit;
mbed_official 85:e1a8e879a6a9 26 return r;
mbed_official 85:e1a8e879a6a9 27 }
mbed_official 85:e1a8e879a6a9 28
mbed_official 85:e1a8e879a6a9 29 #ifdef __cplusplus
mbed_official 85:e1a8e879a6a9 30 }
mbed_official 85:e1a8e879a6a9 31 #endif