Thor Hall / mbed-dev_mbed_lib_v125

This fork captures the mbed lib v125 for ease of integration into older projects.

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_NXP/TARGET_LPC11XX_11CXX/TOOLCHAIN_ARM_STD/sys.cpp@187:92cbb9eec47b, 2018-07-20 (annotated)

Committer:
apluscw
Date:
Fri Jul 20 21:24:42 2018 +0000
Revision:
187:92cbb9eec47b
Mbed library with source code from mbed lib v125. Posted to ease integration with some older projects.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
apluscw 187:92cbb9eec47b 1 /* mbed Microcontroller Library - stackheap
apluscw 187:92cbb9eec47b 2 * Copyright (C) 2009-2011 ARM Limited. All rights reserved.
apluscw 187:92cbb9eec47b 3 *
apluscw 187:92cbb9eec47b 4 * Setup a fixed single stack/heap memory model,
apluscw 187:92cbb9eec47b 5 * between the top of the RW/ZI region and the stackpointer
apluscw 187:92cbb9eec47b 6 */
apluscw 187:92cbb9eec47b 7
apluscw 187:92cbb9eec47b 8 #ifdef __cplusplus
apluscw 187:92cbb9eec47b 9 extern "C" {
apluscw 187:92cbb9eec47b 10 #endif
apluscw 187:92cbb9eec47b 11
apluscw 187:92cbb9eec47b 12 #include <rt_misc.h>
apluscw 187:92cbb9eec47b 13 #include <stdint.h>
apluscw 187:92cbb9eec47b 14
apluscw 187:92cbb9eec47b 15 extern char Image$$RW_IRAM1$$ZI$$Limit[];
apluscw 187:92cbb9eec47b 16
apluscw 187:92cbb9eec47b 17 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
apluscw 187:92cbb9eec47b 18 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
apluscw 187:92cbb9eec47b 19 uint32_t sp_limit = __current_sp();
apluscw 187:92cbb9eec47b 20
apluscw 187:92cbb9eec47b 21 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
apluscw 187:92cbb9eec47b 22
apluscw 187:92cbb9eec47b 23 struct __initial_stackheap r;
apluscw 187:92cbb9eec47b 24 r.heap_base = zi_limit;
apluscw 187:92cbb9eec47b 25 r.heap_limit = sp_limit;
apluscw 187:92cbb9eec47b 26 return r;
apluscw 187:92cbb9eec47b 27 }
apluscw 187:92cbb9eec47b 28
apluscw 187:92cbb9eec47b 29 #ifdef __cplusplus
apluscw 187:92cbb9eec47b 30 }
apluscw 187:92cbb9eec47b 31 #endif