Compiler/TDA4VMXEVM: TDA4VM: C7x memcpy doesn't work properly

Part Number: TDA4VMXEVM

Tool/software: TI C/C++ Compiler

Hi~

Recently we found that func memcpy in C7x did  not work properly，especially at the moment that C7x was receving IPC messages  in a high frequency.

we produced a memcpy_test like this:

void memcoy_test()

{

    int size, offset1, offset2;

    int data1[DATA_LEN_TEST*2];

    int data2[DATA_LEN_TEST*2];

    for ( size = 1; size < DATA_LEN_TEST; size++) {

        for ( offset1= 1; offset1< DATA_LEN_TEST; offset1++) {

            for ( offset2= 1; offset2< DATA_LEN_TEST; offset2++) {

               memset(data1, 0, sizeof(data1));

               memset(data2, 0xa3, sizeof(data2));

               // Hwi_disable()

               memcpy(&data1[offset1], &data2[offset2], size);

               // mymemcpy(&data1[offset1], &data2[offset2], size);

               //Hwi_enable();

               checkout(data1, data2, size, offset1, offset2);

            }

        }

    }

}

especially at the moment that C7x was receving IPC messages  in a high frequency, we sometimes got results likes this:.

data1 =>> |  0 0 0 0 0 ...0  |  0xa3 0xa3 0xa3 (copy from data2, length = size)... | 0xa3 0xa3(overflow, which was wrong)....| 0 0 0 0 .... |

data2 =>> | 0xa3 0xa3 0xa3 .......................................................................................................................................................................|

If we did Hwi_disable/Hwi_enable， func memcpy could work well, result:

data1 =>> |  0 0 0 0 0 ...0  |  0xa3 0xa3 0xa3 (copy from data2, length = size)... | 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 .... |

data2 =>> | 0xa3 0xa3 0xa3 .......................................................................................................................................................................|

Or, we used func mymemcpy,  also work well.

int mymemcpy(void* dst, void* src, int size)

{

  char *p, *q;

  int k = 0;

  p = (char*)dst;

  q = (char*)src;

  for (k=0; k<size; k++) {

    p[k] = q[k];

  }

  return size;

}

So, wo doubted that memcpy do not work properly, while it enter/exit  a Interrupt context..

We need promptly  support to solve this problem, please reply as soon as possible.