Piyamate Wisanuvej / mbed-src-overclock

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-src by mbed official

vendor/NXP/LPC11U24/cmsis/GCC_CS/sys.cpp@10:3bc89ef62ce7, 2013-06-14 (annotated)

Committer:
emilmont
Date:
Fri Jun 14 17:49:17 2013 +0100
Revision:
10:3bc89ef62ce7
Unify mbed library sources

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 exit(main());
emilmont 10:3bc89ef62ce7 50 }
emilmont 10:3bc89ef62ce7 51
emilmont 10:3bc89ef62ce7 52 int _kill(int pid, int sig) {
emilmont 10:3bc89ef62ce7 53 errno = EINVAL;
emilmont 10:3bc89ef62ce7 54 return -1;
emilmont 10:3bc89ef62ce7 55 }
emilmont 10:3bc89ef62ce7 56
emilmont 10:3bc89ef62ce7 57 void _exit(int status) {
emilmont 10:3bc89ef62ce7 58 exit(status);
emilmont 10:3bc89ef62ce7 59 }
emilmont 10:3bc89ef62ce7 60
emilmont 10:3bc89ef62ce7 61 int _getpid(void) {
emilmont 10:3bc89ef62ce7 62 return 1;
emilmont 10:3bc89ef62ce7 63 }
emilmont 10:3bc89ef62ce7 64
emilmont 10:3bc89ef62ce7 65 void *_sbrk(unsigned int incr) {
emilmont 10:3bc89ef62ce7 66 void *mem;
emilmont 10:3bc89ef62ce7 67
emilmont 10:3bc89ef62ce7 68 unsigned int next = ((((unsigned int)heap_pointer + incr) + 7) & ~7);
emilmont 10:3bc89ef62ce7 69 if (next > __get_MSP()) {
emilmont 10:3bc89ef62ce7 70 mem = NULL;
emilmont 10:3bc89ef62ce7 71 } else {
emilmont 10:3bc89ef62ce7 72 mem = (void *)heap_pointer;
emilmont 10:3bc89ef62ce7 73 }
emilmont 10:3bc89ef62ce7 74 heap_pointer = (void *)next;
emilmont 10:3bc89ef62ce7 75
emilmont 10:3bc89ef62ce7 76 return mem;
emilmont 10:3bc89ef62ce7 77 }
emilmont 10:3bc89ef62ce7 78
emilmont 10:3bc89ef62ce7 79 }