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Kernel and Embedded Linux
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SECTIONS { .text : { *(.text) sym1 = 3 - DEFINED (x); } .data : { *(.data) } .bss : { *(.bss) *(COMMON) } } defined1 = !DEFINED (x); defined2 = DEFINED (defined1) + 16; defined3 = DEFINED (defined2) * 256; defined4 = 0x200 - DEFINED (defined3);