Hi,
I'm trying to simulate C and Assembly code on DS-5 Simulator with Cortex-A8 as a bare metal application on Linux. Im having issue with the memcpy.
Im trying to use Memcpy( a, b, size). Here source and destinations, a and b are pointers to the same structure of size 31 bytes. Address of a is 0x0014 b1a4 and b is 0x0014 b183. Size is 31 bytes. So is the problem due to non-alignment of memory or anything else. Can anyone help me out to resolve this issue?
Thanks in advance .
Pavitra
Chrish,
Below is the code added by me and the one which is giving problem. Rest of the code is the example code ( strings and strings_copy ara already in the example)
int nParts = 28;
int location = 4;
MY_STR *pBase;
MY_STR *pCurrLoc;
MY_STR *pLeftLoc;
pBase = (MY_STR *) malloc(nParts * sizeof (MY_STR));
if (pBase == NULL)
{
printf("\n Failed to allocate memory for pBase of type MY_STR in file sorts.c \n");
return -1;
}
pCurrLoc = &pBase[ location ];
pLeftLoc = &pBase[ location - 1 ];
memcpy(pCurrLoc, pLeftLoc, sizeof (MY_STR));--------------------> Added by me
Pls try to help me out reg this???
Thanks for posting the code. Are you able to say what error occurs when you try to run it?
Chris,
When my code is encountering the line containing memcpy, its going to infinite loop( THE ERROR : NO STACK) and getting crashed.
Thx
Is the address returned by malloc valid on your platform? Have you correctly configured the heap in the C library init routine?
Peter,
Yes, the address returned by malloc is perfectly valid and it is working fine when I initially added small piece of code, but later when 've added few more files and also I've modified the scatter file as below and configured the heap here.
APP_DATA +0
* (+RW, +ZI) ; Application RW (.data) and ZI (.bss) data
ARM_LIB_HEAP 0x00040000 EMPTY 0x05FC0000 ; Application heap
{ }
ARM_LIB_STACK 0x07000000 EMPTY -0x01000000 ; Application (SVC mode) stack
IRQ_STACK 0x08000000 EMPTY -0x01000000 ; IRQ mode stack
TTB 0x09000000 EMPTY 0x40000 ; Level-1 Translation Table for MMU