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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_NXP/TARGET_LPC176X/TOOLCHAIN_GCC_CS/sys.cpp@13:0645d8841f51, 2013-08-05 (annotated)

Committer:
bogdanm
Date:
Mon Aug 05 14:12:34 2013 +0300
Revision:
13:0645d8841f51
Parent:
vendor/NXP/LPC1768/cmsis/GCC_CS/sys.cpp@10:3bc89ef62ce7 
Update mbed sources to revision 64

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 #include "cmsis.h"
emilmont 10:3bc89ef62ce7 2 #include <sys/types.h>
emilmont 10:3bc89ef62ce7 3 #include <errno.h>
emilmont 10:3bc89ef62ce7 4
emilmont 10:3bc89ef62ce7 5 extern "C" {
emilmont 10:3bc89ef62ce7 6
emilmont 10:3bc89ef62ce7 7 struct SCS3Regions {
emilmont 10:3bc89ef62ce7 8 unsigned long Dummy;
emilmont 10:3bc89ef62ce7 9 unsigned long* InitRam;
emilmont 10:3bc89ef62ce7 10 unsigned long* StartRam;
emilmont 10:3bc89ef62ce7 11 unsigned long InitSizeRam;
emilmont 10:3bc89ef62ce7 12 unsigned long ZeroSizeRam;
emilmont 10:3bc89ef62ce7 13 };
emilmont 10:3bc89ef62ce7 14
emilmont 10:3bc89ef62ce7 15 extern unsigned long __cs3_regions;
emilmont 10:3bc89ef62ce7 16 extern unsigned long __cs3_heap_start;
emilmont 10:3bc89ef62ce7 17
emilmont 10:3bc89ef62ce7 18 int main(void);
emilmont 10:3bc89ef62ce7 19 void __libc_init_array(void);
emilmont 10:3bc89ef62ce7 20 void exit(int ErrorCode);
emilmont 10:3bc89ef62ce7 21
emilmont 10:3bc89ef62ce7 22 static void *heap_pointer = NULL;
emilmont 10:3bc89ef62ce7 23
emilmont 10:3bc89ef62ce7 24 void __cs3_start_c(void) {
emilmont 10:3bc89ef62ce7 25 static SCS3Regions* pCS3Regions = (SCS3Regions*)&__cs3_regions;
emilmont 10:3bc89ef62ce7 26 unsigned long* pulDest;
emilmont 10:3bc89ef62ce7 27 unsigned long* pulSrc;
emilmont 10:3bc89ef62ce7 28 unsigned long ByteCount;
emilmont 10:3bc89ef62ce7 29 unsigned long i;
emilmont 10:3bc89ef62ce7 30
emilmont 10:3bc89ef62ce7 31 pulSrc = pCS3Regions->InitRam;
emilmont 10:3bc89ef62ce7 32 pulDest = pCS3Regions->StartRam;
emilmont 10:3bc89ef62ce7 33 ByteCount = pCS3Regions->InitSizeRam;
emilmont 10:3bc89ef62ce7 34 if (pulSrc != pulDest) {
emilmont 10:3bc89ef62ce7 35 for(i = 0 ; i < ByteCount ; i += sizeof(unsigned long)) {
emilmont 10:3bc89ef62ce7 36 *(pulDest++) = *(pulSrc++);
emilmont 10:3bc89ef62ce7 37 }
emilmont 10:3bc89ef62ce7 38 } else {
emilmont 10:3bc89ef62ce7 39 pulDest = (unsigned long*)(void*)((char*)pulDest + ByteCount);
emilmont 10:3bc89ef62ce7 40 }
emilmont 10:3bc89ef62ce7 41
emilmont 10:3bc89ef62ce7 42 ByteCount = pCS3Regions->ZeroSizeRam;
emilmont 10:3bc89ef62ce7 43 for(i = 0 ; i < ByteCount ; i += sizeof(unsigned long)) {
emilmont 10:3bc89ef62ce7 44 *(pulDest++) = 0;
emilmont 10:3bc89ef62ce7 45 }
emilmont 10:3bc89ef62ce7 46
emilmont 10:3bc89ef62ce7 47 heap_pointer = &__cs3_heap_start;
emilmont 10:3bc89ef62ce7 48 __libc_init_array();
emilmont 10:3bc89ef62ce7 49
emilmont 10:3bc89ef62ce7 50 exit(main());
emilmont 10:3bc89ef62ce7 51 }
emilmont 10:3bc89ef62ce7 52
emilmont 10:3bc89ef62ce7 53 int _kill(int pid, int sig) {
emilmont 10:3bc89ef62ce7 54 errno = EINVAL;
emilmont 10:3bc89ef62ce7 55 return -1;
emilmont 10:3bc89ef62ce7 56 }
emilmont 10:3bc89ef62ce7 57
emilmont 10:3bc89ef62ce7 58 void _exit(int status) {
emilmont 10:3bc89ef62ce7 59 exit(status);
emilmont 10:3bc89ef62ce7 60 }
emilmont 10:3bc89ef62ce7 61
emilmont 10:3bc89ef62ce7 62 int _getpid(void) {
emilmont 10:3bc89ef62ce7 63 return 1;
emilmont 10:3bc89ef62ce7 64 }
emilmont 10:3bc89ef62ce7 65
emilmont 10:3bc89ef62ce7 66 void *_sbrk(unsigned int incr) {
emilmont 10:3bc89ef62ce7 67 void *mem;
emilmont 10:3bc89ef62ce7 68
emilmont 10:3bc89ef62ce7 69 unsigned int next = ((((unsigned int)heap_pointer + incr) + 7) & ~7);
emilmont 10:3bc89ef62ce7 70 if (next > __get_MSP()) {
emilmont 10:3bc89ef62ce7 71 mem = NULL;
emilmont 10:3bc89ef62ce7 72 } else {
emilmont 10:3bc89ef62ce7 73 mem = (void *)heap_pointer;
emilmont 10:3bc89ef62ce7 74 }
emilmont 10:3bc89ef62ce7 75 heap_pointer = (void *)next;
emilmont 10:3bc89ef62ce7 76
emilmont 10:3bc89ef62ce7 77 return mem;
emilmont 10:3bc89ef62ce7 78 }
emilmont 10:3bc89ef62ce7 79
emilmont 10:3bc89ef62ce7 80 }