请教CCS4调试6748时的relocation from function ....overflow的warning问题的解决办法？

Hi all，
warning: relocation from function "main" to symbol "_close_flash" overflowed; the 31-bit relocated address 0xdffffb00 is too large to encode in the 21-bit signed PC-Relative field (type = 'R_C60PCR21' (82), file = "./main.obj", offset = 0x0000008c, section = ".text")
warning: relocation from function "main" to symbol    "_GPIO_Init" overflowed; the 31-bit relocated address 0xdffffb00 is too    large to encode in the 21-bit signed PC-Relative field (type = 'R_C60PCR21'    (82), file = "./main.obj", offset = 0x00000090, section = ".text")
。。。。。
在调试过程中遇到了很多这种relocation overflow的问题，不知该从何下手，请各位高手指教一下。谢谢！