📄 pre_proc_asm.asm
字号:
.mmregs
FP .set AR7
.bss _y2_hi,1,0,0
.bss _y2_lo,1,0,0
.bss _y1_hi,1,0,0
.bss _y1_lo,1,0,0
.bss _x0,1,0,0
.bss _x1,1,0,0
.sect ".text"
.global _Pre_Process
;----------------------------------------------------------------------
; 60 | void Pre_Process(
; 61 | Word16 signal[], /* input/output signal */
; 62 | Word16 lg) /* length of signal */
;----------------------------------------------------------------------
_Pre_Process:
PSHM AR1
PSHM AR6
PSHM AR7
FRAME #-8
NOP
MVDK *SP(12),*(AR6) ;ar6 = lg
;----------------------------------------------------------------------
; 67 | for(i=0; i<lg; i++)
;----------------------------------------------------------------------
SSBX SXM
LD *(AR6),B
BC L2,BLEQ
STLM A,AR1 ;ar1 = signal[]
LD #_y1_hi,A
STL A,*SP(2) ;sp(2) = y1_hi
LD #_y1_lo,A
STL A,*SP(3) ;sp(3) = y1_lo
L1:
;----------------------------------------------------------------------
; 69 | x2 = x1;
;----------------------------------------------------------------------
LD *(_x1),A
STL A,*SP(4) ;sp(4) = x1
MVDK *(_x0),*(_x1) ;x1 = x0
MVDK *AR1,*(_x0) ;x0 = signal[0]
;----------------------------------------------------------------------
; 76 | L_tmp = Mpy_32_16(y1_hi, y1_lo, a140[1]);
;----------------------------------------------------------------------
STM #_a140,AR7
;RSBX FRCT
;RSBX OVM
;MVKD *(_y1_lo),*SP(0)
;LD *AR7(1),A
;STL A,*SP(1)
LD *AR7(1), B
;LD *(_y1_hi),A
MVDK *(_y1_hi),*(AR4) ;****
;CALL #_Mpy_32_16
;------------------- Mpy_32_16 --------------------------------------
;LD *SP(0),T ; T = lo
LD *(_y1_lo), T
;LD *SP(1),B ; B = n
;STLM A,AR4 ; ar1 = hi
SSBX SXM
SSBX FRCT
SSBX OVM
LD *(BL),16,A ; ah = n
NOP
MPYA A ; a = L_mult(lo, n)
STLM B,T ; T = n
STH A,*(AR2) ; (ar2) = L_mult(lo, n)
MPY *(AR4),A ; a = L_mult(hi, n)
MVMD AR2,T
MAC #1, A
;------------------- Mpy_32_16 End ----------------------------------
DST A,*SP(6) ;sp(6) = L_tmp
;----------------------------------------------------------------------
; 77 | L_tmp = L_add(L_tmp, Mpy_32_16(y2_hi, y2_lo, a140[2]));
;----------------------------------------------------------------------
;MVKD *(_y2_lo),*SP(0)
;RSBX FRCT
;LD *AR7(2),A
;RSBX OVM
;STL A,*SP(1)
;LD *(_y2_hi),A
;CALL #_Mpy_32_16
;------------------- Mpy_32_16 --------------------------------------
LD *AR7(2), B
;LD *(_y1_hi),A
MVDK *(_y2_hi),*(AR4) ;****
;LD *SP(0),T ; T = lo
LD *(_y2_lo), T
;LD *SP(1),B ; B = n
;STLM A,AR4 ; ar1 = hi
;SSBX SXM
;SSBX FRCT
;SSBX OVM
LD *(BL),16,A ; ah = n
NOP
MPYA A ; a = L_mult(lo, n)
STLM B,T ; T = n
STH A,*(AR2) ; (ar2) = L_mult(lo, n)
MPY *(AR4),A ; a = L_mult(hi, n)
MVMD AR2,T
MAC #1, A
;------------------- Mpy_32_16 End ----------------------------------
;SSBX SXM
;SSBX OVM
DLD *SP(6),B
;RSBX SXM
NOP
ADD A,B ; b = L_tmp
;----------------------------------------------------------------------
; 78 | L_tmp = L_mac(L_tmp, x0, b140[0]);
; 79 | L_tmp = L_mac(L_tmp, x1, b140[1]);
; 80 | L_tmp = L_mac(L_tmp, x2, b140[2]);
;----------------------------------------------------------------------
LD B,A
;RSBX OVM
;SSBX SXM
;SFTA A,8
STM #_b140,AR2
;SFTA A,-8
LD *(_x0),T
;ORM #2,*(PMST)
;SSBX OVM
;SSBX FRCT
ORM #2,*(PMST)
MAC *(_b140), A
;RSBX OVM
LD *(_x1),T
;SFTA A,8
;SFTA A,-8
;SSBX OVM
MAC *AR2(1), A
;RSBX OVM
;NOP
;SFTA A,8
;SSBX OVM
;SFTA A,-8
LD *SP(4),T
MAC *AR2(2), A
;----------------------------------------------------------------------
; 81 | L_tmp = L_shl(L_tmp, 3); /* Q28 --> Q31 (Q12 --> Q15) */
;----------------------------------------------------------------------
;RSBX FRCT
;RSBX OVM
;ST #3,*SP(0)
;CALL #_L_shl
SFTA A,3
NOP
DST A,*SP(6)
;----------------------------------------------------------------------
; 82 | signal[i] = round(L_tmp);
;----------------------------------------------------------------------
;RSBX OVM
;SSBX SXM
;SFTA A,8
;SFTA A,-8
;SSBX OVM
ADD #1,#15,A,A
STH A,*AR1+
;----------------------------------------------------------------------
; 84 | y2_hi = y1_hi;
;----------------------------------------------------------------------
MVDK *(_y1_hi),*(_y2_hi)
;----------------------------------------------------------------------
; 85 | y2_lo = y1_lo;
;----------------------------------------------------------------------
MVDK *(_y1_lo),*(_y2_lo)
;----------------------------------------------------------------------
; 86 | L_Extract(L_tmp, &y1_hi, &y1_lo);
;----------------------------------------------------------------------
;LD *SP(2),A
;STL A,*SP(0)
;LD *SP(3),A
;RSBX OVM
;STL A,*SP(1)
;RSBX FRCT
DLD *SP(6),A
;CALL #_L_Extract
;----------------- L_Extract inline ---------------------------------
;SSBX SXM ; ****
;RSBX OVM
;SSBX FRCT
;SFTA A,8
;SFTA A,-8
;SSBX OVM
MVDK *SP(3),*(AR4)
MVDK *SP(2),*(AR2)
LD A,B
SFTL B,#-16,B
STLM B,AR3
MVKD *(AR3),*AR2
SFTA A,-1
MVMD AR3,T
LD #16384,B
ORM #2,*(PMST)
MAS *(BL), A
STL A,*AR4
;----------------- L_Extract End ---------------------------------
NOP
;----------------------------------------------------------------------
; 88 | return;
;----------------------------------------------------------------------
BANZ L1,*+AR6(-1)
L2:
ANDM #-833,*(ST1)
ANDM #-4,*(PMST)
FRAME #8
POPM AR7
POPM AR6
POPM AR1
RET
.sect ".text"
.global _Init_Pre_Process
;----------------------------------------------------------------------
; 49 | void Init_Pre_Process(void)
;----------------------------------------------------------------------
_Init_Pre_Process:
;----------------------------------------------------------------------
; 51 | y2_hi = 0;
;----------------------------------------------------------------------
ST #0,*(_y2_hi) ; |51|
;----------------------------------------------------------------------
; 52 | y2_lo = 0;
;----------------------------------------------------------------------
ST #0,*(_y2_lo) ; |52|
;----------------------------------------------------------------------
; 53 | y1_hi = 0;
;----------------------------------------------------------------------
ST #0,*(_y1_hi) ; |53|
;----------------------------------------------------------------------
; 54 | y1_lo = 0;
;----------------------------------------------------------------------
ST #0,*(_y1_lo) ; |54|
;----------------------------------------------------------------------
; 55 | x0 = 0;
;----------------------------------------------------------------------
ST #0,*(_x0) ; |55|
;----------------------------------------------------------------------
; 56 | x1 = 0;
;----------------------------------------------------------------------
ST #0,*(_x1) ; |56|
RET
;***************************************************************
;* UNDEFINED EXTERNAL REFERENCES *
;***************************************************************
.global _b140
.global _a140
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