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lib_mem.h

Prototypes

MEM_VAL_COPY_GET_INT08U_BIG(addr_dest, addr_src);
MEM_VAL_COPY_GET_INT16U_BIG(addr_dest, addr_src);
MEM_VAL_COPY_GET_INT32U_BIG(addr_dest, addr_src);
MEM_VAL_COPY_GET_INTU_BIG(addr_dest, addr_src, val_size);

MEM_VAL_COPY_GET_INT08U_LITTLE(addr_dest, addr_src);
MEM_VAL_COPY_GET_INT16U_LITTLE(addr_dest, addr_src);
MEM_VAL_COPY_GET_INT32U_LITTLE(addr_dest, addr_src);
MEM_VAL_COPY_GET_INTU_LITTLE(addr_dest, addr_src, val_size);

MEM_VAL_COPY_GET_INT08U(addr_dest, addr_src);
MEM_VAL_COPY_GET_INT16U(addr_dest, addr_src);
MEM_VAL_COPY_GET_INT32U(addr_dest, addr_src);
MEM_VAL_COPY_GET_INTU(addr_dest, addr_src, val_size);

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MEM_VAL_COPY_GET_xxx() macros are more efficient than MEM_VAL_GET_xxx() macros (see section 4-2-4) and are also fully independent of CPU data-word-alignment and should be used whenever possible. Fixed-size copy MEM_VAL_COPY_GET_INTxxU_xxx() macros are more efficient than dynamic-size copy MEM_VAL_COPY_GET_INTU_xxx() macros and should be used whenever possible.

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Since octet-order copy/conversion are inverse operations, MEM_VAL_COPY_GET_xxx() and MEM_VAL_COPY_SET_xxx() memory data-copy get/set macros are inverse, but identical, operations and are provided in both forms for semantics and consistency. See also section 4-2-7.

Example Usage

          CPU_INT16U  *pmem;
          CPU_INT16U  *pval;
          CPU_INT08U   buf[SIZE];


                    pmem = &SomeAddr;                    /* Any CPU address */
          pval = &SomeVal;                     /* Any CPU address */
          MEM_VAL_COPY_GET_INT16U(pmem, pval);
          MEM_VAL_COPY_GET_INTU(&buf[0], pmem, sizeof(buf));