MEMORY{  R_TEXTMEM (ARX) : ORIGIN = 0x100, LENGTH = 16K  R_DATAMEM (AW)  : org = 0x1000, l = (4 * 1024)} REGION_ALIAS ("A_TEXTMEM", R_TEXTMEM);REGION_ALIAS ("A_DATAMEM", R_DATAMEM); REGION_ALIAS ("TEXTMEM", A_TEXTMEM);REGION_ALIAS ("DATAMEM", A_DATAMEM); SECTIONS{  . = 0;  .text :  {    text_start = ORIGIN (TEXTMEM);    *(.text)    *(.pr)    text_end = .;  } > TEXTMEM    data_start = ORIGIN (DATAMEM);  .data :  {    *(.data)    *(.rw)    data_end = .;  } >DATAMEM   fred = ORIGIN(DATAMEM) + LENGTH(DATAMEM);  tred = ORIGIN(TEXTMEM) + LENGTH(TEXTMEM);}