mbed library sources. Supersedes mbed-src.
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targets/cmsis/TARGET_NXP/TARGET_LPC176X/TOOLCHAIN_GCC_CS/sys.cpp
- Committer:
- rodriguise
- Date:
- 2016-10-17
- Revision:
- 148:4802eb17e82b
- Parent:
- 144:ef7eb2e8f9f7
File content as of revision 148:4802eb17e82b:
#include "cmsis.h" #include <sys/types.h> #include <errno.h> extern "C" { struct SCS3Regions { unsigned long Dummy; unsigned long* InitRam; unsigned long* StartRam; unsigned long InitSizeRam; unsigned long ZeroSizeRam; }; extern unsigned long __cs3_regions; extern unsigned long __cs3_heap_start; int main(void); void __libc_init_array(void); void exit(int ErrorCode); static void *heap_pointer = NULL; void __cs3_start_c(void) { static SCS3Regions* pCS3Regions = (SCS3Regions*)&__cs3_regions; unsigned long* pulDest; unsigned long* pulSrc; unsigned long ByteCount; unsigned long i; pulSrc = pCS3Regions->InitRam; pulDest = pCS3Regions->StartRam; ByteCount = pCS3Regions->InitSizeRam; if (pulSrc != pulDest) { for(i = 0 ; i < ByteCount ; i += sizeof(unsigned long)) { *(pulDest++) = *(pulSrc++); } } else { pulDest = (unsigned long*)(void*)((char*)pulDest + ByteCount); } ByteCount = pCS3Regions->ZeroSizeRam; for(i = 0 ; i < ByteCount ; i += sizeof(unsigned long)) { *(pulDest++) = 0; } heap_pointer = &__cs3_heap_start; __libc_init_array(); exit(main()); } int _kill(int pid, int sig) { errno = EINVAL; return -1; } void _exit(int status) { exit(status); } int _getpid(void) { return 1; } void *_sbrk(unsigned int incr) { void *mem; unsigned int next = ((((unsigned int)heap_pointer + incr) + 7) & ~7); if (next > __get_MSP()) { mem = NULL; } else { mem = (void *)heap_pointer; } heap_pointer = (void *)next; return mem; } }