请教编译出错！

out文件出不来，提示的错误是symbol referencing errors
编译提示：
-------------------------- carrier64161.pjt - Debug --------------------------
\"d:\\ti\\c6000\\cgtools\\bin\\cl6x\" -g -q -fr\"D:/ti/myprojects/carrier/carrier64161/Debug\" -d\"_DEBUG\" -mv6400 -@\"Debug.lkf\" \"init.c\"

\"d:\\ti\\c6000\\cgtools\\bin\\cl6x\" -g -q -fr\"D:/ti/myprojects/carrier/carrier64161/Debug\" -d\"_DEBUG\" -mv6400 -@\"Debug.lkf\" \"main.c\"

\"d:\\ti\\c6000\\cgtools\\bin\\cl6x\" -g -q -fr\"D:/ti/myprojects/carrier/carrier64161/Debug\" -d\"_DEBUG\" -mv6400 -@\"Debug.lkf\" \"start.asm\"

\"d:\\ti\\c6000\\cgtools\\bin\\cl6x\" -@\"Debug.lkf\"

undefined first referenced
symbol in file
--------- ----------------
_load D:\\ti\\myprojects\\carrier\\carrier64161\\Debug\\main.obj
>> error: symbol referencing errors - \'sine.out\' not built

Build Complete,
1 Errors, 0 Warnings, 0 Remarks.
高手解决下

我的函数没有定义不过没看懂load函数干什么的
后来把load.asm添加以后就好了
附_load.sam

.global _load

.text

N .set 1000

;
; ======== _load ========
; This function simulates a load on the DSP by executing N * loopCount
; instructions, where loopCount is the input parameter to load().
;
; void _load(int loopCount)
;
; The loop is using 8 instructions. One instruction for sub, nop and
; b, plus nop 5. The extra nop added after sub is to make the number
; of instructions in the loop a power of 2.
;
_load:

mv a4, b0 ; use b0 as loop counter
[!b0] b lend
mvk N,b1
mpy b1,b0,b0
nop
shru b0,3,b0 ; (loop counter)= (# loops)/8

loop:
sub b0,1,b0

我看此load函数的说明，它什么都不做的，只是增加DSP的计算负担，可能是用来模拟负载的。