RTEMS 4.6.0pre5 On-Line Library

Initialization Code Data Section Recopy

BSP and Device Driver Development Guide

7.7: Data Section Recopy

The next initialization part can be found in $BSP340_ROOT/start340/init68340.c. First the Interrupt Vector Table is copied into RAM, then the data section recopy is initiated (_CopyDataClearBSSAndStart in $BSP340_ROOT/start340/startfor340only.s).

This code performs the following actions:

copies the .data section from ROM to its location reserved in RAM (see Linker Script Initialized Data for more details about this copy),
clear .bss section (all the non-initialized data will take value 0).

BSP and Device Driver Development Guide