reorder.asm

基于TMS320F2812的AMR+RS编解码+OFDM调制解调源程序。是stand alone运行版本

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** Description:     reorder() in reorder.c                              **
**                                                                         **
** Inputs                                                                  **
**                                                                         **
**   xar7---Word16 *lsf                                                    **
**   ar1 ---Word16 min_dist                                                **
**   ar2 ---word16 n                                                       **
** Outputs:     none                                                       **
**                                                                         **
** Return value :       xar3                                               **
**                                                                         **
** Attribute    :       Cycles: 100       Pm: 9                          **
**                      Modified Registers:  all                           **
**                                                                         **
** Programmer   :       xiewei                                     **
*****************************************************************************

  .global _reorder
_reorder: 

		MOV   AH,     @AR1    ;lsf_min = min_dist; 
        DEC   @AR2            ;for (i = 0; i < n; i++) 
LOOP:                         ; if (sub (lsf[i], lsf_min) < 0)
		CMP   AH,     *XAR7   ;{lsf[i] = lsf_min;}      
		SB    L1,     LEQ     ;lsf_min = add (lsf[i], min_dist);
		MOV   *XAR7,  AH
L1:     MOV   AH,     @AR1
        ADD   AH,     *XAR7++
        BANZ  LOOP,    AR2--
   		LRETR