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mbed library sources

Fork of mbed-src by mbed official

targets/cmsis/TARGET_NXP/TARGET_LPC11XX_11CXX/TOOLCHAIN_GCC_CS/sys.cpp@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
30:91c1d09ada54 
l053

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 30:91c1d09ada54 1 #include "cmsis.h"
mbed_official 30:91c1d09ada54 2 #include <sys/types.h>
mbed_official 30:91c1d09ada54 3 #include <errno.h>
mbed_official 30:91c1d09ada54 4
mbed_official 30:91c1d09ada54 5 extern "C" {
mbed_official 30:91c1d09ada54 6
mbed_official 30:91c1d09ada54 7 struct SCS3Regions {
mbed_official 30:91c1d09ada54 8 unsigned long Dummy;
mbed_official 30:91c1d09ada54 9 unsigned long* InitRam;
mbed_official 30:91c1d09ada54 10 unsigned long* StartRam;
mbed_official 30:91c1d09ada54 11 unsigned long InitSizeRam;
mbed_official 30:91c1d09ada54 12 unsigned long ZeroSizeRam;
mbed_official 30:91c1d09ada54 13 };
mbed_official 30:91c1d09ada54 14
mbed_official 30:91c1d09ada54 15 extern unsigned long __cs3_regions;
mbed_official 30:91c1d09ada54 16 extern unsigned long __cs3_heap_start;
mbed_official 30:91c1d09ada54 17
mbed_official 30:91c1d09ada54 18 int main(void);
mbed_official 30:91c1d09ada54 19 void __libc_init_array(void);
mbed_official 30:91c1d09ada54 20 void exit(int ErrorCode);
mbed_official 30:91c1d09ada54 21
mbed_official 30:91c1d09ada54 22 static void *heap_pointer = NULL;
mbed_official 30:91c1d09ada54 23
mbed_official 30:91c1d09ada54 24 void __cs3_start_c(void) {
mbed_official 30:91c1d09ada54 25 static SCS3Regions* pCS3Regions = (SCS3Regions*)&__cs3_regions;
mbed_official 30:91c1d09ada54 26 unsigned long* pulDest;
mbed_official 30:91c1d09ada54 27 unsigned long* pulSrc;
mbed_official 30:91c1d09ada54 28 unsigned long ByteCount;
mbed_official 30:91c1d09ada54 29 unsigned long i;
mbed_official 30:91c1d09ada54 30
mbed_official 30:91c1d09ada54 31 pulSrc = pCS3Regions->InitRam;
mbed_official 30:91c1d09ada54 32 pulDest = pCS3Regions->StartRam;
mbed_official 30:91c1d09ada54 33 ByteCount = pCS3Regions->InitSizeRam;
mbed_official 30:91c1d09ada54 34 if (pulSrc != pulDest) {
mbed_official 30:91c1d09ada54 35 for(i = 0 ; i < ByteCount ; i += sizeof(unsigned long)) {
mbed_official 30:91c1d09ada54 36 *(pulDest++) = *(pulSrc++);
mbed_official 30:91c1d09ada54 37 }
mbed_official 30:91c1d09ada54 38 } else {
mbed_official 30:91c1d09ada54 39 pulDest = (unsigned long*)(void*)((char*)pulDest + ByteCount);
mbed_official 30:91c1d09ada54 40 }
mbed_official 30:91c1d09ada54 41
mbed_official 30:91c1d09ada54 42 ByteCount = pCS3Regions->ZeroSizeRam;
mbed_official 30:91c1d09ada54 43 for(i = 0 ; i < ByteCount ; i += sizeof(unsigned long)) {
mbed_official 30:91c1d09ada54 44 *(pulDest++) = 0;
mbed_official 30:91c1d09ada54 45 }
mbed_official 30:91c1d09ada54 46
mbed_official 30:91c1d09ada54 47 heap_pointer = &__cs3_heap_start;
mbed_official 30:91c1d09ada54 48 __libc_init_array();
mbed_official 30:91c1d09ada54 49 exit(main());
mbed_official 30:91c1d09ada54 50 }
mbed_official 30:91c1d09ada54 51
mbed_official 30:91c1d09ada54 52 int _kill(int pid, int sig) {
mbed_official 30:91c1d09ada54 53 errno = EINVAL;
mbed_official 30:91c1d09ada54 54 return -1;
mbed_official 30:91c1d09ada54 55 }
mbed_official 30:91c1d09ada54 56
mbed_official 30:91c1d09ada54 57 void _exit(int status) {
mbed_official 30:91c1d09ada54 58 exit(status);
mbed_official 30:91c1d09ada54 59 }
mbed_official 30:91c1d09ada54 60
mbed_official 30:91c1d09ada54 61 int _getpid(void) {
mbed_official 30:91c1d09ada54 62 return 1;
mbed_official 30:91c1d09ada54 63 }
mbed_official 30:91c1d09ada54 64
mbed_official 30:91c1d09ada54 65 void *_sbrk(unsigned int incr) {
mbed_official 30:91c1d09ada54 66 void *mem;
mbed_official 30:91c1d09ada54 67
mbed_official 30:91c1d09ada54 68 unsigned int next = ((((unsigned int)heap_pointer + incr) + 7) & ~7);
mbed_official 30:91c1d09ada54 69 if (next > __get_MSP()) {
mbed_official 30:91c1d09ada54 70 mem = NULL;
mbed_official 30:91c1d09ada54 71 } else {
mbed_official 30:91c1d09ada54 72 mem = (void *)heap_pointer;
mbed_official 30:91c1d09ada54 73 }
mbed_official 30:91c1d09ada54 74 heap_pointer = (void *)next;
mbed_official 30:91c1d09ada54 75
mbed_official 30:91c1d09ada54 76 return mem;
mbed_official 30:91c1d09ada54 77 }
mbed_official 30:91c1d09ada54 78
mbed_official 30:91c1d09ada54 79 }