Janek Mann / mbed-src-openwear

mbed library sources modified for open wear

Dependents:   openwear-lifelogger-example

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F407VG/TOOLCHAIN_ARM_STD/sys.cpp@310:6188e0254baa, 2014-09-16 (annotated)

Committer:
janekm
Date:
Tue Sep 16 22:42:01 2014 +0000
Revision:
310:6188e0254baa
Parent:
297:ec1b66a3d094 
N/A

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 282:2aafb3236a60 1 /* mbed Microcontroller Library - stackheap
mbed_official 282:2aafb3236a60 2 * Copyright (C) 2009-2011 ARM Limited. All rights reserved.
mbed_official 282:2aafb3236a60 3 *
mbed_official 282:2aafb3236a60 4 * Setup a fixed single stack/heap memory model,
mbed_official 282:2aafb3236a60 5 * between the top of the RW/ZI region and the stackpointer
mbed_official 282:2aafb3236a60 6 */
mbed_official 282:2aafb3236a60 7
mbed_official 282:2aafb3236a60 8 #ifdef __cplusplus
mbed_official 282:2aafb3236a60 9 extern "C" {
mbed_official 282:2aafb3236a60 10 #endif
mbed_official 282:2aafb3236a60 11
mbed_official 282:2aafb3236a60 12 #include <rt_misc.h>
mbed_official 282:2aafb3236a60 13 #include <stdint.h>
mbed_official 282:2aafb3236a60 14
mbed_official 282:2aafb3236a60 15 extern char Image$$RW_IRAM1$$ZI$$Limit[];
mbed_official 282:2aafb3236a60 16
mbed_official 282:2aafb3236a60 17 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
mbed_official 282:2aafb3236a60 18 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
mbed_official 282:2aafb3236a60 19 uint32_t sp_limit = __current_sp();
mbed_official 282:2aafb3236a60 20
mbed_official 282:2aafb3236a60 21 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
mbed_official 282:2aafb3236a60 22
mbed_official 282:2aafb3236a60 23 struct __initial_stackheap r;
mbed_official 282:2aafb3236a60 24 r.heap_base = zi_limit;
mbed_official 282:2aafb3236a60 25 r.heap_limit = sp_limit;
mbed_official 282:2aafb3236a60 26 return r;
mbed_official 282:2aafb3236a60 27 }
mbed_official 282:2aafb3236a60 28
mbed_official 282:2aafb3236a60 29 #ifdef __cplusplus
mbed_official 282:2aafb3236a60 30 }
mbed_official 282:2aafb3236a60 31 #endif