shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/cmsis/TARGET_NXP/TARGET_LPC15XX/TOOLCHAIN_ARM_MICRO/sys.cpp@103:9b881da47c92, 2014-02-20 (annotated)

Committer:
mbed_official
Date:
Thu Feb 20 23:00:08 2014 +0000
Revision:
103:9b881da47c92
Synchronized with git revision 1f2da5f6047218c8c45334c11bdaaaeab3c18841



Full URL: https://github.com/mbedmicro/mbed/commit/1f2da5f6047218c8c45334c11bdaaaeab3c18841/



NXP master merge

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 103:9b881da47c92 1 /* mbed Microcontroller Library - stackheap
mbed_official 103:9b881da47c92 2 * Copyright (C) 2009-2011 ARM Limited. All rights reserved.
mbed_official 103:9b881da47c92 3 *
mbed_official 103:9b881da47c92 4 * Setup a fixed single stack/heap memory model,
mbed_official 103:9b881da47c92 5 * between the top of the RW/ZI region and the stackpointer
mbed_official 103:9b881da47c92 6 */
mbed_official 103:9b881da47c92 7
mbed_official 103:9b881da47c92 8 #ifdef __cplusplus
mbed_official 103:9b881da47c92 9 extern "C" {
mbed_official 103:9b881da47c92 10 #endif
mbed_official 103:9b881da47c92 11
mbed_official 103:9b881da47c92 12 #include <rt_misc.h>
mbed_official 103:9b881da47c92 13 #include <stdint.h>
mbed_official 103:9b881da47c92 14
mbed_official 103:9b881da47c92 15 extern char Image$$RW_IRAM1$$ZI$$Limit[];
mbed_official 103:9b881da47c92 16
mbed_official 103:9b881da47c92 17 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
mbed_official 103:9b881da47c92 18 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
mbed_official 103:9b881da47c92 19 uint32_t sp_limit = __current_sp();
mbed_official 103:9b881da47c92 20
mbed_official 103:9b881da47c92 21 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
mbed_official 103:9b881da47c92 22
mbed_official 103:9b881da47c92 23 struct __initial_stackheap r;
mbed_official 103:9b881da47c92 24 r.heap_base = zi_limit;
mbed_official 103:9b881da47c92 25 r.heap_limit = sp_limit;
mbed_official 103:9b881da47c92 26 return r;
mbed_official 103:9b881da47c92 27 }
mbed_official 103:9b881da47c92 28
mbed_official 103:9b881da47c92 29 #ifdef __cplusplus
mbed_official 103:9b881da47c92 30 }
mbed_official 103:9b881da47c92 31 #endif