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mbed library sources

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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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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

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 }