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Memcpy

Pavi

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

Parents
  • 0 in reply to Peter Harris

    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

      { }

    }

Reply
  • 0 in reply to Peter Harris

    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

      { }

    }

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