arm-elf-objcopy create a 200MB binary from a 200K elf image!!

[Cliff Tsai]

Hi:
    
    I'm trying to converter a elf image to 
binary format
    $arm-elf-objcopy -I elf-littlearm -O binary 
testarm.elf testarm.bin
 
    But testarm.bin is almost 200M,but my 
testarm.elf only has 200K.
    Why?
 
    Thanks!
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