📄 fft.lis
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0280 46A2 std z+38,R4
0282 57A2 std z+39,R5
0284 21C0 xjmp L9
0286 L8:
0286 .dbline 23
0286 .dbline 24
0286 FE01 movw R30,R28
0288 24A0 ldd R2,z+36
028A 35A0 ldd R3,z+37
028C 46A0 ldd R4,z+38
028E 57A0 ldd R5,z+39
0290 FE01 movw R30,R28
0292 6080 ldd R6,z+0
0294 7180 ldd R7,z+1
0296 8280 ldd R8,z+2
0298 9380 ldd R9,z+3
029A 6218 sub R6,R2
029C 7308 sbc R7,R3
029E 8408 sbc R8,R4
02A0 9508 sbc R9,R5
02A2 FE01 movw R30,R28
02A4 6082 std z+0,R6
02A6 7182 std z+1,R7
02A8 8282 std z+2,R8
02AA 9382 std z+3,R9
02AC .dbline 25
02AC FE01 movw R30,R28
02AE 24A0 ldd R2,z+36
02B0 35A0 ldd R3,z+37
02B2 46A0 ldd R4,z+38
02B4 57A0 ldd R5,z+39
02B6 5694 lsr R5
02B8 4794 ror R4
02BA 3794 ror R3
02BC 2794 ror R2
02BE FE01 movw R30,R28
02C0 24A2 std z+36,R2
02C2 35A2 std z+37,R3
02C4 46A2 std z+38,R4
02C6 57A2 std z+39,R5
02C8 .dbline 26
02C8 L9:
02C8 .dbline 22
02C8 ; while (m >= 2 && j > m)
02C8 42E0 ldi R20,2
02CA 50E0 ldi R21,0
02CC 60E0 ldi R22,0
02CE 70E0 ldi R23,0
02D0 FE01 movw R30,R28
02D2 24A0 ldd R2,z+36
02D4 35A0 ldd R3,z+37
02D6 46A0 ldd R4,z+38
02D8 57A0 ldd R5,z+39
02DA 2416 cp R2,R20
02DC 3506 cpc R3,R21
02DE 4606 cpc R4,R22
02E0 5706 cpc R5,R23
02E2 80F0 brlo L11
02E4 FE01 movw R30,R28
02E6 24A0 ldd R2,z+36
02E8 35A0 ldd R3,z+37
02EA 46A0 ldd R4,z+38
02EC 57A0 ldd R5,z+39
02EE FE01 movw R30,R28
02F0 6080 ldd R6,z+0
02F2 7180 ldd R7,z+1
02F4 8280 ldd R8,z+2
02F6 9380 ldd R9,z+3
02F8 2614 cp R2,R6
02FA 3704 cpc R3,R7
02FC 4804 cpc R4,R8
02FE 5904 cpc R5,R9
0300 08F4 brsh X1
0302 C1CF xjmp L8
0304 X1:
0304 L11:
0304 .dbline 27
0304 FE01 movw R30,R28
0306 24A0 ldd R2,z+36
0308 35A0 ldd R3,z+37
030A 46A0 ldd R4,z+38
030C 57A0 ldd R5,z+39
030E FE01 movw R30,R28
0310 6080 ldd R6,z+0
0312 7180 ldd R7,z+1
0314 8280 ldd R8,z+2
0316 9380 ldd R9,z+3
0318 620C add R6,R2
031A 731C adc R7,R3
031C 841C adc R8,R4
031E 951C adc R9,R5
0320 FE01 movw R30,R28
0322 6082 std z+0,R6
0324 7182 std z+1,R7
0326 8282 std z+2,R8
0328 9382 std z+3,R9
032A .dbline 28
032A L3:
032A .dbline 16
032A 42E0 ldi R20,2
032C 50E0 ldi R21,0
032E 60E0 ldi R22,0
0330 70E0 ldi R23,0
0332 FE01 movw R30,R28
0334 2480 ldd R2,z+4
0336 3580 ldd R3,z+5
0338 4680 ldd R4,z+6
033A 5780 ldd R5,z+7
033C 240E add R2,R20
033E 351E adc R3,R21
0340 461E adc R4,R22
0342 571E adc R5,R23
0344 FE01 movw R30,R28
0346 2482 std z+4,R2
0348 3582 std z+5,R3
034A 4682 std z+6,R4
034C 5782 std z+7,R5
034E L5:
034E .dbline 16
034E FE01 movw R30,R28
0350 248C ldd R2,z+28
0352 358C ldd R3,z+29
0354 468C ldd R4,z+30
0356 578C ldd R5,z+31
0358 FE01 movw R30,R28
035A 6480 ldd R6,z+4
035C 7580 ldd R7,z+5
035E 8680 ldd R8,z+6
0360 9780 ldd R9,z+7
0362 6214 cp R6,R2
0364 7304 cpc R7,R3
0366 8404 cpc R8,R4
0368 9504 cpc R9,R5
036A 08F4 brsh X2
036C 77CE xjmp L2
036E X2:
036E .dbline 29
036E ; {
036E ; j -= m;
036E ; m >>= 1; //将m除以2的值赋给m
036E ; }
036E ; j += m;
036E ; }
036E ; mmax=2;
036E 42E0 ldi R20,2
0370 50E0 ldi R21,0
0372 60E0 ldi R22,0
0374 70E0 ldi R23,0
0376 FE01 movw R30,R28
0378 408F std z+24,R20
037A 518F std z+25,R21
037C 628F std z+26,R22
037E 738F std z+27,R23
0380 52C3 xjmp L13
0382 L12:
0382 .dbline 30
0382 ; while (n > mmax) {
0382 .dbline 31
0382 ; istep=mmax << 1;
0382 FE01 movw R30,R28
0384 208C ldd R2,z+24
0386 318C ldd R3,z+25
0388 428C ldd R4,z+26
038A 538C ldd R5,z+27
038C 220C lsl R2
038E 331C rol R3
0390 441C rol R4
0392 551C rol R5
0394 FE01 movw R30,R28
0396 20A2 std z+32,R2
0398 31A2 std z+33,R3
039A 42A2 std z+34,R4
039C 53A2 std z+35,R5
039E .dbline 32
039E ; theta=isign*(6.28318530717959/mmax);
039E 8501 movw R16,R10
03A0 0E940000 xcall int2fp
03A4 3A93 st -y,R19
03A6 2A93 st -y,R18
03A8 1A93 st -y,R17
03AA 0A93 st -y,R16
03AC 00E0 ldi R16,<L15
03AE 10E0 ldi R17,>L15
03B0 0E940000 xcall lpm32
03B4 3A93 st -y,R19
03B6 2A93 st -y,R18
03B8 1A93 st -y,R17
03BA 0A93 st -y,R16
03BC 00E0 ldi R16,<L16
03BE 10E0 ldi R17,>L16
03C0 0E940000 xcall lpm32
03C4 3A93 st -y,R19
03C6 2A93 st -y,R18
03C8 1A93 st -y,R17
03CA 0A93 st -y,R16
03CC FE01 movw R30,R28
03CE ; stack offset 12
03CE 24A0 ldd R2,z+36
03D0 35A0 ldd R3,z+37
03D2 46A0 ldd R4,z+38
03D4 57A0 ldd R5,z+39
03D6 5694 lsr R5
03D8 4794 ror R4
03DA 3794 ror R3
03DC 2794 ror R2
03DE 8101 movw R16,R2
03E0 9201 movw R18,R4
03E2 0E940000 xcall long2fp
03E6 3A93 st -y,R19
03E8 2A93 st -y,R18
03EA 1A93 st -y,R17
03EC 0A93 st -y,R16
03EE 0E940000 xcall empy32fs
03F2 41E0 ldi R20,1
03F4 50E0 ldi R21,0
03F6 60E0 ldi R22,0
03F8 70E0 ldi R23,0
03FA FE01 movw R30,R28
03FC ; stack offset 12
03FC 24A0 ldd R2,z+36
03FE 35A0 ldd R3,z+37
0400 46A0 ldd R4,z+38
0402 57A0 ldd R5,z+39
0404 2422 and R2,R20
0406 3522 and R3,R21
0408 4622 and R4,R22
040A 5722 and R5,R23
040C 8101 movw R16,R2
040E 9201 movw R18,R4
0410 0E940000 xcall long2fp
0414 3A93 st -y,R19
0416 2A93 st -y,R18
0418 1A93 st -y,R17
041A 0A93 st -y,R16
041C 0E940000 xcall add32fs
0420 0E940000 xcall div32fs
0424 0E940000 xcall empy32f
0428 FE01 movw R30,R28
042A 04AB std z+52,R16
042C 15AB std z+53,R17
042E 26AB std z+54,R18
0430 37AB std z+55,R19
0432 .dbline 33
0432 ; wtemp=sin(0.5*theta);
0432 00E0 ldi R16,<L17
0434 10E0 ldi R17,>L17
0436 0E940000 xcall lpm32
043A 3A93 st -y,R19
043C 2A93 st -y,R18
043E 1A93 st -y,R17
0440 0A93 st -y,R16
0442 FE01 movw R30,R28
0444 ; stack offset 4
0444 20AC ldd R2,z+56
0446 31AC ldd R3,z+57
0448 42AC ldd R4,z+58
044A 53AC ldd R5,z+59
044C 5A92 st -y,R5
044E 4A92 st -y,R4
0450 3A92 st -y,R3
0452 2A92 st -y,R2
0454 0E940000 xcall empy32f
0458 0E940000 xcall _sin
045C FE01 movw R30,R28
045E 00A7 std z+40,R16
0460 11A7 std z+41,R17
0462 22A7 std z+42,R18
0464 33A7 std z+43,R19
0466 .dbline 34
0466 ; wpr = -2.0*wtemp*wtemp;
0466 00E0 ldi R16,<L18
0468 10E0 ldi R17,>L18
046A 0E940000 xcall lpm32
046E 3A93 st -y,R19
0470 2A93 st -y,R18
0472 1A93 st -y,R17
0474 0A93 st -y,R16
0476 FE01 movw R30,R28
0478 ; stack offset 4
0478 24A4 ldd R2,z+44
047A 35A4 ldd R3,z+45
047C 46A4 ldd R4,z+46
047E 57A4 ldd R5,z+47
0480 5A92 st -y,R5
0482 4A92 st -y,R4
0484 3A92 st -y,R3
0486 2A92 st -y,R2
0488 0E940000 xcall empy32fs
048C FE01 movw R30,R28
048E ; stack offset 4
048E 24A4 ldd R2,z+44
0490 35A4 ldd R3,z+45
0492 46A4 ldd R4,z+46
0494 57A4 ldd R5,z+47
0496 5A92 st -y,R5
0498 4A92 st -y,R4
049A 3A92 st -y,R3
049C 2A92 st -y,R2
049E 0E940000 xcall empy32f
04A2 FE01 movw R30,R28
04A4 04A7 std z+44,R16
04A6 15A7 std z+45,R17
04A8 26A7 std z+46,R18
04AA 37A7 std z+47,R19
04AC .dbline 35
04AC ; wpi=sin(theta);
04AC FE01 movw R30,R28
04AE 04A9 ldd R16,z+52
04B0 15A9 ldd R17,z+53
04B2 26A9 ldd R18,z+54
04B4 37A9 ldd R19,z+55
04B6 0E940000 xcall _sin
04BA FE01 movw R30,R28
04BC 00AB std z+48,R16
04BE 11AB std z+49,R17
04C0 22AB std z+50,R18
04C2 33AB std z+51,R19
04C4 .dbline 36
04C4 ; wr=1.0;
04C4 00E0 ldi R16,<L19
04C6 10E0 ldi R17,>L19
04C8 0E940000 xcall lpm32
04CC FE01 movw R30,R28
04CE 048B std z+20,R16
04D0 158B std z+21,R17
04D2 268B std z+22,R18
04D4 378B std z+23,R19
04D6 .dbline 37
04D6 ; wi=0.0;
04D6 00E0 ldi R16,<L20
04D8 10E0 ldi R17,>L20
04DA 0E940000 xcall lpm32
04DE FE01 movw R30,R28
04E0 008B std z+16,R16
04E2 118B std z+17,R17
04E4 228B std z+18,R18
04E6 338B std z+19,R19
04E8 .dbline 38
04E8 41E0 ldi R20,1
04EA 50E0 ldi R21,0
04EC 60E0 ldi R22,0
04EE 70E0 ldi R23,0
04F0 FE01 movw R30,R28
04F2 44A3 std z+36,R20
04F4 55A3 std z+37,R21
04F6 66A3 std z+38,R22
04F8 77A3 std z+39,R23
04FA 7BC2 xjmp L24
04FC L21:
04FC .dbline 38
04FC ; for (m=1;m<mmax;m+=2) {
04FC .dbline 39
04FC FE01 movw R30,R28
04FE 24A0 ldd R2,z+36
0500 35A0 ldd R3,z+37
0502 46A0 ldd R4,z+38
0504 57A0 ldd R5,z+39
0506 FE01 movw R30,R28
0508 2482 std z+4,R2
050A 3582 std z+5,R3
050C 4682 std z+6,R4
050E 5782 std z+7,R5
0510 D0C1 xjmp L28
0512 L25:
0512 .dbline 39
0512 .dbline 40
0512 FE01 movw R30,R28
0514 208C ldd R2,z+24
0516 318C ldd R3,z+25
0518 428C ldd R4,z+26
051A 538C ldd R5,z+27
051C FE01 movw R30,R28
051E 6480 ldd R6,z+4
0520 7580 ldd R7,z+5
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