rfft.asm

来自「TI公司5000系列DSP（TMS320C5416)原装DSK板的全部试验程序」· 汇编 代码 · 共 56 行

*********************************************************************************
*       (C) COPYRIGHT TEXAS INSTRUMENTS, INC. 1996                              *
*********************************************************************************
*                                                                               *
* FILE NAME:    rfft.asm                                                        *
*                                                                               *
* AUTHORS:      Simon Lau and Nathan Baltz                                      *
*                                                                               *
* DESCRIPTION:  The following code implements a Radix-2, DIT, 2N-point Real FFT *
*               for the TMS320C54x.  This main program makes four function      *
*               calls, each corresponds to a different phase of the algorithm.  *
*               For more details about how each phase is implemented, see       *
*               bit_rev.asm, fft.asm, unpack.asm, and power.asm assembly files. *                  *
*                                                                               *
* DATE:         7-16-1996                                                       *
*                                                                               *
*********************************************************************************

        .def        _rfft_task
        .ref        bit_rev, fft, unpack, power

        .text

_rfft_task: 
        PSHM    AR0
        PSHM    AR1
        PSHM    AR2
        PSHM    AR3
        PSHM    AR4
        PSHM    AR5 
        PSHM    AR6
        PSHM    AR7
        NOP
        NOP
        CALL    bit_rev
        CALL    fft
        CALL    unpack
        CALL    power
       
_rfft_end:
        NOP
        NOP
        NOP
        POPM    AR7
        POPM    AR6
        POPM    AR5
        POPM    AR4
        POPM    AR3
        POPM    AR2 
        POPM    AR1
        POPM    AR0 
    RET       
       ;B  _rfft_task
      
        .end