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mbed library sources

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targets/cmsis/TARGET_NXP/TARGET_LPC11UXX/TOOLCHAIN_ARM_MICRO/sys.cpp@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
13:0645d8841f51 
l053

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library - stackheap
emilmont 10:3bc89ef62ce7 2 * Copyright (C) 2009-2011 ARM Limited. All rights reserved.
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Setup a fixed single stack/heap memory model,
emilmont 10:3bc89ef62ce7 5 * between the top of the RW/ZI region and the stackpointer
emilmont 10:3bc89ef62ce7 6 */
emilmont 10:3bc89ef62ce7 7
emilmont 10:3bc89ef62ce7 8 #ifdef __cplusplus
emilmont 10:3bc89ef62ce7 9 extern "C" {
emilmont 10:3bc89ef62ce7 10 #endif
emilmont 10:3bc89ef62ce7 11
emilmont 10:3bc89ef62ce7 12 #include <rt_misc.h>
emilmont 10:3bc89ef62ce7 13 #include <stdint.h>
emilmont 10:3bc89ef62ce7 14
emilmont 10:3bc89ef62ce7 15 extern char Image$$RW_IRAM1$$ZI$$Limit[];
emilmont 10:3bc89ef62ce7 16
emilmont 10:3bc89ef62ce7 17 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
emilmont 10:3bc89ef62ce7 18 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
emilmont 10:3bc89ef62ce7 19 uint32_t sp_limit = __current_sp();
emilmont 10:3bc89ef62ce7 20
emilmont 10:3bc89ef62ce7 21 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
emilmont 10:3bc89ef62ce7 22
emilmont 10:3bc89ef62ce7 23 struct __initial_stackheap r;
emilmont 10:3bc89ef62ce7 24 r.heap_base = zi_limit;
emilmont 10:3bc89ef62ce7 25 r.heap_limit = sp_limit;
emilmont 10:3bc89ef62ce7 26 return r;
emilmont 10:3bc89ef62ce7 27 }
emilmont 10:3bc89ef62ce7 28
emilmont 10:3bc89ef62ce7 29 #ifdef __cplusplus
emilmont 10:3bc89ef62ce7 30 }
emilmont 10:3bc89ef62ce7 31 #endif