forked from KolibriOS/kolibrios
fast Hartley transform presented
git-svn-id: svn://kolibrios.org@2210 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Artem Jerdev (art_zh)
parent
6bbd71b6f8
commit
6641043d17
@ -79,7 +79,7 @@ end if
|
||||
;{
|
||||
include "..\..\..\macros.inc"
|
||||
; purge mov
|
||||
include "debug.inc"
|
||||
include "..\..\debug.inc"
|
||||
include 'dump.inc'
|
||||
;}
|
||||
end if
|
||||
|
||||
@ -1,137 +1,137 @@
|
||||
macro debug_print str
|
||||
{
|
||||
local ..string, ..label
|
||||
|
||||
jmp ..label
|
||||
..string db str,0
|
||||
..label:
|
||||
|
||||
pushf
|
||||
pushad
|
||||
mov edx,..string
|
||||
call debug_outstr
|
||||
popad
|
||||
popf
|
||||
}
|
||||
|
||||
dps fix debug_print
|
||||
|
||||
macro debug_print_dec arg
|
||||
{
|
||||
pushf
|
||||
pushad
|
||||
if ~arg eq eax
|
||||
mov eax,arg
|
||||
end if
|
||||
call debug_outdec
|
||||
popad
|
||||
popf
|
||||
}
|
||||
|
||||
dpd fix debug_print_dec
|
||||
|
||||
;---------------------------------
|
||||
debug_outdec: ;(eax - num, edi-str)
|
||||
push 10 ;2
|
||||
pop ecx ;1
|
||||
push -'0' ;2
|
||||
.l0:
|
||||
xor edx,edx ;2
|
||||
div ecx ;2
|
||||
push edx ;1
|
||||
test eax,eax ;2
|
||||
jnz .l0 ;2
|
||||
.l1:
|
||||
pop eax ;1
|
||||
add al,'0' ;2
|
||||
call debug_outchar ; stosb
|
||||
jnz .l1 ;2
|
||||
ret ;1
|
||||
;---------------------------------
|
||||
|
||||
debug_outchar: ; al - char
|
||||
pushf
|
||||
pushad
|
||||
mov cl,al
|
||||
mov eax,63
|
||||
mov ebx,1
|
||||
mcall
|
||||
popad
|
||||
popf
|
||||
ret
|
||||
|
||||
debug_outstr:
|
||||
mov eax,63
|
||||
mov ebx,1
|
||||
@@:
|
||||
mov cl,[edx]
|
||||
test cl,cl
|
||||
jz @f
|
||||
int 40h
|
||||
inc edx
|
||||
jmp @b
|
||||
@@:
|
||||
ret
|
||||
|
||||
_debug_crlf db 13, 10, 0
|
||||
|
||||
macro newline
|
||||
{
|
||||
pushf
|
||||
pushad
|
||||
mov edx, _debug_crlf
|
||||
call debug_outstr
|
||||
popad
|
||||
popf
|
||||
}
|
||||
|
||||
macro print message
|
||||
{
|
||||
dps message
|
||||
newline
|
||||
}
|
||||
|
||||
macro pregs
|
||||
{
|
||||
dps "EAX: "
|
||||
dpd eax
|
||||
dps " EBX: "
|
||||
dpd ebx
|
||||
newline
|
||||
dps "ECX: "
|
||||
dpd ecx
|
||||
dps " EDX: "
|
||||
dpd edx
|
||||
newline
|
||||
}
|
||||
|
||||
macro debug_print_hex arg
|
||||
{
|
||||
pushf
|
||||
pushad
|
||||
if ~arg eq eax
|
||||
mov eax, arg
|
||||
end if
|
||||
call debug_outhex
|
||||
popad
|
||||
popf
|
||||
}
|
||||
dph fix debug_print_hex
|
||||
|
||||
debug_outhex:
|
||||
; eax - number
|
||||
mov edx, 8
|
||||
.new_char:
|
||||
rol eax, 4
|
||||
movzx ecx, al
|
||||
and cl, 0x0f
|
||||
mov cl, [__hexdigits + ecx]
|
||||
pushad
|
||||
mcall 63, 1
|
||||
popad
|
||||
dec edx
|
||||
jnz .new_char
|
||||
ret
|
||||
|
||||
__hexdigits:
|
||||
macro debug_print str
|
||||
{
|
||||
local ..string, ..label
|
||||
|
||||
jmp ..label
|
||||
..string db str,0
|
||||
..label:
|
||||
|
||||
pushf
|
||||
pushad
|
||||
mov edx,..string
|
||||
call debug_outstr
|
||||
popad
|
||||
popf
|
||||
}
|
||||
|
||||
dps fix debug_print
|
||||
|
||||
macro debug_print_dec arg
|
||||
{
|
||||
pushf
|
||||
pushad
|
||||
if ~arg eq eax
|
||||
mov eax,arg
|
||||
end if
|
||||
call debug_outdec
|
||||
popad
|
||||
popf
|
||||
}
|
||||
|
||||
dpd fix debug_print_dec
|
||||
|
||||
;---------------------------------
|
||||
debug_outdec: ;(eax - num, edi-str)
|
||||
push 10 ;2
|
||||
pop ecx ;1
|
||||
push -'0' ;2
|
||||
.l0:
|
||||
xor edx,edx ;2
|
||||
div ecx ;2
|
||||
push edx ;1
|
||||
test eax,eax ;2
|
||||
jnz .l0 ;2
|
||||
.l1:
|
||||
pop eax ;1
|
||||
add al,'0' ;2
|
||||
call debug_outchar ; stosb
|
||||
jnz .l1 ;2
|
||||
ret ;1
|
||||
;---------------------------------
|
||||
|
||||
debug_outchar: ; al - char
|
||||
pushf
|
||||
pushad
|
||||
mov cl,al
|
||||
mov eax,63
|
||||
mov ebx,1
|
||||
mcall
|
||||
popad
|
||||
popf
|
||||
ret
|
||||
|
||||
debug_outstr:
|
||||
mov eax,63
|
||||
mov ebx,1
|
||||
@@:
|
||||
mov cl,[edx]
|
||||
test cl,cl
|
||||
jz @f
|
||||
mcall
|
||||
inc edx
|
||||
jmp @b
|
||||
@@:
|
||||
ret
|
||||
|
||||
_debug_crlf db 13, 10, 0
|
||||
|
||||
macro newline
|
||||
{
|
||||
pushf
|
||||
pushad
|
||||
mov edx, _debug_crlf
|
||||
call debug_outstr
|
||||
popad
|
||||
popf
|
||||
}
|
||||
|
||||
macro print message
|
||||
{
|
||||
dps message
|
||||
newline
|
||||
}
|
||||
|
||||
macro pregs
|
||||
{
|
||||
dps "EAX: "
|
||||
dpd eax
|
||||
dps " EBX: "
|
||||
dpd ebx
|
||||
newline
|
||||
dps "ECX: "
|
||||
dpd ecx
|
||||
dps " EDX: "
|
||||
dpd edx
|
||||
newline
|
||||
}
|
||||
|
||||
macro debug_print_hex arg
|
||||
{
|
||||
pushf
|
||||
pushad
|
||||
if ~arg eq eax
|
||||
mov eax, arg
|
||||
end if
|
||||
call debug_outhex
|
||||
popad
|
||||
popf
|
||||
}
|
||||
dph fix debug_print_hex
|
||||
|
||||
debug_outhex:
|
||||
; eax - number
|
||||
mov edx, 8
|
||||
.new_char:
|
||||
rol eax, 4
|
||||
movzx ecx, al
|
||||
and cl, 0x0f
|
||||
mov cl, [__hexdigits + ecx]
|
||||
pushad
|
||||
mcall 63, 1
|
||||
popad
|
||||
dec edx
|
||||
jnz .new_char
|
||||
ret
|
||||
|
||||
__hexdigits:
|
||||
db '0123456789ABCDEF'
|
||||
28
programs/other/fft/FHT.txt
Normal file
28
programs/other/fft/FHT.txt
Normal file
@ -0,0 +1,28 @@
|
||||
This is a draft version of my Fast Hartley Transform (FHT) routine for KolibriOS
|
||||
|
||||
Hartley transform is a real-basis version of well-known Fourier transform:
|
||||
|
||||
1) basis function: cas(x) = cos(x) + sin(x);
|
||||
2) forward transform: H(f) = sum(k=0..N-1) [X(k)*cas(kf/(2*pi*N))]
|
||||
3) reverse transform: X(k) = 1/N * sum(f=0..N-1) [H(f)*cas(kf/(2*pi*N))]
|
||||
|
||||
FHT is known to be faster than most conventional fast Fourier transform (FHT) methods.
|
||||
It also uses half-length arrays due to no need of imaginary data storage.
|
||||
|
||||
FHT can be easily converted to FFT (and back) with no loss of information.
|
||||
Most of general tasks FFT used for (correlation, convolution, energy spectra, noise
|
||||
filtration, differential math, phase detection ect.) may be done directly with FHT.
|
||||
|
||||
====================================================================================
|
||||
|
||||
Copyright (C) A. Jerdev 1999, 2003 and 2010.
|
||||
|
||||
The code can be used, changed and redistributed in any KolibriOS application
|
||||
with only two limitations:
|
||||
|
||||
1) the author's name and copyright information cannot be deleted or changed;
|
||||
|
||||
2) the code is not allowed to be ported to or distributed with other operation systems.
|
||||
|
||||
18/09/2010
|
||||
Artem Jerdev <kolibri@jerdev.co.uk>
|
||||
203
programs/other/fft/FHT4A.asm
Normal file
203
programs/other/fft/FHT4A.asm
Normal file
@ -0,0 +1,203 @@
|
||||
;========================================================================
|
||||
;= =
|
||||
;= Fast Hartley Transform demo for KolibriOS =
|
||||
;= =
|
||||
;= Copyright (C) 2010, Artem Jerdev <kolibri@jerdev.co.uk> =
|
||||
;= =
|
||||
;= refer to wiki.kolibtios.org for all details =
|
||||
;= =
|
||||
;========================================================================
|
||||
|
||||
|
||||
|
||||
|
||||
use32
|
||||
|
||||
org 0x0
|
||||
|
||||
db 'MENUET01' ; 8 byte id
|
||||
dd 0x01 ; header version
|
||||
dd START ; start of code
|
||||
dd I_END ; size of image
|
||||
dd 0x100000 ; memory for app
|
||||
dd 0xbfffc ; esp
|
||||
dd 0x0 , 0x0 ; I_Param , I_Icon
|
||||
|
||||
include '../../macros.inc'
|
||||
include '../debug.inc'
|
||||
include 'FHT4i.inc'
|
||||
|
||||
|
||||
START: ; start of execution
|
||||
|
||||
call main
|
||||
|
||||
|
||||
mov eax,-1 ; close this program
|
||||
int 0x40
|
||||
|
||||
|
||||
;=============================================================
|
||||
;Func: calculates a simple function
|
||||
; ff = (512*2^(-t) * cos (2.5*t))
|
||||
; uses: eax, ebx
|
||||
;------------
|
||||
Func:
|
||||
|
||||
; 9 : {
|
||||
|
||||
; 10 : double x,t;
|
||||
; 11 : int f;
|
||||
; 12 :
|
||||
; 13 : x = (i < N2) ? i : i - NUM_POINTS;
|
||||
mov eax, [ii]
|
||||
cmp eax, 512
|
||||
jge .index_negative
|
||||
jmp .index_correct
|
||||
.index_negative:
|
||||
sub eax, 1024
|
||||
.index_correct:
|
||||
mov [temp], eax
|
||||
; fild [temp]
|
||||
|
||||
; 14 : t = x / 16.0;
|
||||
; f2xm1 argument (abs) must be less than 1, so
|
||||
mov [t_mod], eax
|
||||
and [t_mod], 0x0F ; x % 16
|
||||
shr eax, 4 ; x / 16
|
||||
mov [t_div], eax
|
||||
fild [temp]
|
||||
|
||||
; 15 : if (t<0) t = -t;
|
||||
fabs
|
||||
exp_ok:
|
||||
; 16 : f = (512*2^(-t) * cos (2.5*t));
|
||||
fchs
|
||||
f2xm1
|
||||
fmul [f500]
|
||||
fstp [tv93]
|
||||
fld [f2_5]
|
||||
fmul [tt]
|
||||
fcos
|
||||
fmul [tv93]
|
||||
fstp [tt]
|
||||
mov bx, word[tt+6]
|
||||
shr bx,4
|
||||
and bx,0x07FF
|
||||
add ax,bx
|
||||
shl ax,4
|
||||
and word[tt+6], 0x800F
|
||||
or word[tt+6], ax
|
||||
fld [tt]
|
||||
fstp [ff]
|
||||
|
||||
; 17 : return f;
|
||||
; 18 : }
|
||||
ret
|
||||
;---------------------------------------------------------
|
||||
; test data filler
|
||||
;
|
||||
; uses eax, ebx, ecx
|
||||
FillData:
|
||||
; 29 : for (i=0; i<NUM_POINTS; i++)
|
||||
; here : ecx = i
|
||||
xor ecx, ecx
|
||||
.funcloop:
|
||||
; 30 : {
|
||||
; 31 : ia[i] = Func(i);
|
||||
mov [ii], ecx
|
||||
call Func
|
||||
fld [ff]
|
||||
fstp qword [edx+ecx*8]
|
||||
; 32 : }
|
||||
inc ecx
|
||||
cmp ecx, [_in] ; ecx == N ?
|
||||
jne .funcloop
|
||||
ret
|
||||
|
||||
;====================================================================
|
||||
; main
|
||||
;====================================================================
|
||||
|
||||
_ia dd 0
|
||||
_ii dd 0
|
||||
_ip dd 0
|
||||
_in dd 0
|
||||
_it dd 0
|
||||
;-----------------
|
||||
|
||||
main:
|
||||
mov eax, 68
|
||||
mov ebx, 11
|
||||
int 0x40
|
||||
fninit
|
||||
mov cl, 2 ; power of 4
|
||||
mov byte[_ip], cl
|
||||
mov eax, 1
|
||||
shl eax, cl
|
||||
shl eax, cl
|
||||
mov [_in], eax
|
||||
mov dl, cl
|
||||
call CreateSinCosTable
|
||||
mov [_it], edx
|
||||
mov ecx, [_in]
|
||||
shl ecx, 3
|
||||
mov ebx, 12
|
||||
mov eax, 68
|
||||
int 0x40
|
||||
mov [_ia], eax
|
||||
mov edx, eax
|
||||
|
||||
call FillData
|
||||
|
||||
cpuid
|
||||
rdtsc
|
||||
mov [t_0], eax
|
||||
|
||||
push [_it]
|
||||
push [_ia]
|
||||
push [_ip]
|
||||
push [_in]
|
||||
call FHT_4
|
||||
add esp, 16
|
||||
cpuid
|
||||
rdtsc
|
||||
mov [t_1], eax
|
||||
|
||||
sub eax, [t_0]
|
||||
debug_print_hex eax
|
||||
print '<- fht time'
|
||||
|
||||
mov edx, [_it]
|
||||
call DestroySinCosTable
|
||||
mov ecx, [_ia]
|
||||
mov ebx, 13
|
||||
mov eax, 68
|
||||
int 0x40
|
||||
ret
|
||||
|
||||
|
||||
; ========================================================
|
||||
; static data
|
||||
;----------------
|
||||
|
||||
align 8
|
||||
|
||||
;f18 dq 0x4032000000000000
|
||||
f256 dq 256.01f
|
||||
f14_2 dq 14.2f
|
||||
f500 dq 0x407f400000000000
|
||||
f2_5 dq 0x4004000000000000
|
||||
tt dq ?
|
||||
tv93 dq ?
|
||||
t_div dd ?
|
||||
t_mod dd ?
|
||||
temp dd ?
|
||||
ff dq ? ; return value (int)
|
||||
ii dd ? ; argument (int) = array index
|
||||
t_1 dd ?
|
||||
t_0 dd ?
|
||||
fcontrol dw 0x0037f
|
||||
title db ' Fast Hartley Transform Test - A.Jerdev 2010'
|
||||
|
||||
I_END:
|
||||
841
programs/other/fft/FHT4i.inc
Normal file
841
programs/other/fft/FHT4i.inc
Normal file
@ -0,0 +1,841 @@
|
||||
; Fast Hartley Transform routine
|
||||
; Copyright (C) 1999, 2004, 2010
|
||||
; Artem Jerdev artem@jerdev.co.uk
|
||||
;
|
||||
; free KolibriOS version - not to be ported to other OSes
|
||||
; ==========================================================
|
||||
|
||||
|
||||
; global constants
|
||||
align 8
|
||||
_r dq 1.41421356237309504880169 ; = sqrt(2)
|
||||
_r2 dq 0.70710678118654752440084 ; = sqrt(2)/2
|
||||
_c1 dq 0.92387953251128675612818 ; = cos(pi/8)
|
||||
_s1 dq 0.38268343236508977172846 ; = sin(pi/8)
|
||||
|
||||
;=================================================================
|
||||
; parameter1:
|
||||
; -- reg dl (bits[3:0]) = Power_of_4
|
||||
; returns:
|
||||
; -- reg edx = _CosTable address (4k-aligned)
|
||||
; assumes: _SinTable = _CosTable + (N/2)*8
|
||||
; user heap has to be initialized
|
||||
; destroys:
|
||||
; -- eax, ebx, ecx
|
||||
;; ==========================
|
||||
align 4
|
||||
CreateSinCosTable:
|
||||
xor eax, eax
|
||||
inc eax
|
||||
mov cl, dl
|
||||
and cl, 15
|
||||
shl eax, cl
|
||||
shl eax, cl
|
||||
mov ecx, eax ; now ecx = N
|
||||
shl ecx, 3
|
||||
mov ebx, 12
|
||||
mov eax, 68
|
||||
int 0x40 ; getmem(N*sizeof(double))
|
||||
|
||||
mov edx, eax ; edx = _CosTable
|
||||
shr ecx, 1
|
||||
mov ebx, eax
|
||||
add ebx, ecx ; ebx = _SinTable
|
||||
shr ecx, 3
|
||||
push ecx ; [esp] = ecx = N/2
|
||||
|
||||
xor eax, eax
|
||||
fldpi
|
||||
fidiv dword[esp] ; st : dx = 2*pi/N
|
||||
pop ecx
|
||||
fldz ; st : 0, dx
|
||||
.loop:
|
||||
fld st0 ; st : x, x, dx
|
||||
FSINCOS ; st : cos, sin, x, dx
|
||||
fstp qword [edx+eax*8] ; st : sin, x, dx
|
||||
fstp qword [ebx+eax*8] ; st : x, dx
|
||||
fadd st0, st1 ; st : x+dx, dx
|
||||
|
||||
inc eax
|
||||
cmp eax, ecx
|
||||
jne .loop
|
||||
fstp st0 ; st : dx
|
||||
fstp st0 ; st : <empty>
|
||||
ret
|
||||
|
||||
;=================================================================
|
||||
; parameter1:
|
||||
; -- reg edx = _CosTable address
|
||||
; destroys:
|
||||
; -- eax, ebx, ecx
|
||||
;; ==========================
|
||||
align 4
|
||||
DestroySinCosTable:
|
||||
mov ecx, edx
|
||||
mov ebx, 13
|
||||
mov eax, 68
|
||||
int 0x40 ; free(SinCosTable)
|
||||
ret
|
||||
|
||||
;=================================================================
|
||||
; parameter1:
|
||||
; -- reg dl (bits[3:0]) = Power_of_4
|
||||
; -- reg edx && (-16) = 4k-aligned data array address
|
||||
; returns:
|
||||
; -- edx = Power_of_4
|
||||
; -- ecx = N
|
||||
; destroys:
|
||||
; -- eax, ebx, ecx, edx, esi
|
||||
;; ==========================
|
||||
align 4
|
||||
BitInvert:
|
||||
mov esi, edx
|
||||
and esi, 0xFFFFFFF0
|
||||
and edx, 0x0F
|
||||
push edx
|
||||
mov cl, dl
|
||||
xor eax, eax
|
||||
inc eax
|
||||
shl eax, cl
|
||||
shl eax, cl
|
||||
push eax
|
||||
xor ecx, ecx ; index term
|
||||
.newterm:
|
||||
inc ecx
|
||||
cmp ecx, [esp] ; N
|
||||
jge .done
|
||||
|
||||
xor eax, eax
|
||||
mov edx, ecx
|
||||
xor bl, bl
|
||||
|
||||
.do_invert:
|
||||
inc bl
|
||||
cmp bl, byte[esp+4] ; Power_of_4
|
||||
jg .switch
|
||||
|
||||
mov bh, dl
|
||||
and bh, 3
|
||||
shl eax, 2
|
||||
or al, bh
|
||||
shr edx, 2
|
||||
jmp .do_invert
|
||||
|
||||
.switch:
|
||||
cmp eax, ecx
|
||||
jle .newterm
|
||||
|
||||
fld qword [esi+eax*8]
|
||||
fld qword [esi+ecx*8]
|
||||
fstp qword [esi+eax*8]
|
||||
fstp qword [esi+ecx*8]
|
||||
jmp .newterm
|
||||
|
||||
.done:
|
||||
pop ecx
|
||||
pop edx
|
||||
ret
|
||||
|
||||
;=================================================================
|
||||
|
||||
|
||||
;=================================================================
|
||||
; stdcall parameters:
|
||||
; -- [esp+4] = N
|
||||
; -- [esp+8] = 4k-aligned data array address
|
||||
; returns:
|
||||
; -- nothing
|
||||
; destroys:
|
||||
; -- ebx, esi
|
||||
;; ==========================
|
||||
align 4
|
||||
step1:
|
||||
mov ebx, [esp+8]
|
||||
mov esi, [esp+4]
|
||||
shl esi, 3
|
||||
add esi, ebx
|
||||
|
||||
.loop:
|
||||
fld qword[ebx]
|
||||
fld qword[ebx+8]
|
||||
fld st1
|
||||
fsub st0, st1 ; st : t2, f[i+1], f[i]
|
||||
fxch st1 ; st : f[i+1], t2, f[i]
|
||||
faddp st2, st0 ; st : t2, t1
|
||||
fld qword[ebx+16]
|
||||
fld qword[ebx+24]
|
||||
fld st1 ; st : f[i+2], f[i+3], f[i+2], t2, t1
|
||||
fadd st0, st1 ; st : t3, f[i+3], f[i+2], t2, t1
|
||||
fxch st2 ; st : f[i+2], f[i+3], t3, t2, t1
|
||||
fsub st0, st1 ; st : t4, f[i+3], t3, t2, t1
|
||||
fstp st1 ; st : t4, t3, t2, t1
|
||||
fld st2 ; st : t2, t4, t3, t2, t1
|
||||
fadd st0, st1 ; st : t2+t4, t4, t3, t2, t1
|
||||
fstp qword[ebx+16] ; st : t4, t3, t2, t1
|
||||
fsubp st2, st0 ; st : t3, t2-t4, t1
|
||||
fld st2 ; st : t1, t3, t2-t4, t1
|
||||
fadd st0, st1 ; st : t1+t3, t3, t2-t4, t1
|
||||
fstp qword[ebx] ; st : t3, t2-t4, t1
|
||||
fsubp st2, st0 ; st : t2-t4, t1-t3
|
||||
fstp qword[ebx+24] ; st : t1-t3
|
||||
fstp qword[ebx+8] ; st : <empty>
|
||||
|
||||
add ebx, 32
|
||||
cmp ebx, esi
|
||||
jnz .loop
|
||||
ret
|
||||
|
||||
; local stack definitions
|
||||
;===========================================================================
|
||||
_t0 equ dword [esp]
|
||||
_t1 equ dword[esp+4]
|
||||
_t2 equ dword[esp+8]
|
||||
_t3 equ dword[esp+12]
|
||||
_t4 equ dword[esp+16]
|
||||
_t5 equ dword[esp+20]
|
||||
_t6 equ dword[esp+24]
|
||||
_t7 equ dword[esp+28]
|
||||
_t8 equ dword[esp+32]
|
||||
_t9 equ dword[esp+36]
|
||||
|
||||
_l1 equ dword[esp+40]
|
||||
_l2 equ dword[esp+44]
|
||||
_l3 equ dword[esp+48]
|
||||
_l4 equ dword[esp+52]
|
||||
_l5 equ dword[esp+56]
|
||||
_l6 equ dword[esp+60]
|
||||
_l7 equ dword[esp+64]
|
||||
_l8 equ dword[esp+68]
|
||||
_l9 equ dword[esp+72]
|
||||
_l0 equ dword[esp+76]
|
||||
_d1 equ dword[esp+80]
|
||||
_d2 equ dword[esp+84]
|
||||
_d3 equ dword[esp+88]
|
||||
_d4 equ dword[esp+92]
|
||||
_d5 equ dword[esp+96]
|
||||
_d6 equ dword[esp+100]
|
||||
_j5 equ dword[esp+104]
|
||||
_jj equ dword[esp+108]
|
||||
_end_of_array equ dword[esp+112]
|
||||
_step equ word [esp+116]
|
||||
|
||||
|
||||
;=================================================================
|
||||
; cdecl parameters:
|
||||
; -- [ebp+8] = N
|
||||
; -- [ebp+12] = 4k-aligned data array address
|
||||
; returns:
|
||||
; -- nothing
|
||||
; destroys:
|
||||
; -- eax, ebx
|
||||
; locals:
|
||||
; -- 10 stack-located dwords (_t0 ... _t9)
|
||||
;; ==========================
|
||||
align 4
|
||||
step2:
|
||||
push ebp
|
||||
mov ebp, esp
|
||||
sub esp, 40
|
||||
mov ebx, [ebp+12]
|
||||
mov eax, [ebp+ 8]
|
||||
shl eax, 3
|
||||
add eax, ebx
|
||||
|
||||
.loop_i:
|
||||
|
||||
; -- quad subelements +0, +4, +8 and +12 (simpliest operations)
|
||||
fld qword[ebx]
|
||||
fld qword[ebx+8*4]
|
||||
fld st0
|
||||
fadd st0, st2 ; st : t1, f_4, f_0
|
||||
fxch st1
|
||||
fsubp st2, st0 ; st : t1, t2
|
||||
fld qword[ebx+8*8]
|
||||
fld qword[ebx+8*12]
|
||||
fld st0
|
||||
fadd st0, st2 ; st : t3, f_12, t1, t2
|
||||
fxch st1
|
||||
fsubp st2, st0 ; st : t3, t4, t1, t2
|
||||
; ------
|
||||
fld st2 ; st : t1, t3, t4, t1, t2
|
||||
fadd st0, st1
|
||||
fstp qword[ebx] ; st : t3, t4, t1, t2
|
||||
fsub st0, st2 ; st : t3-t1, t4, t1, t2
|
||||
fchs ; st : t1-t3, t4, t1, t2
|
||||
fstp qword[ebx+8*4] ; st : t4, t1, t2
|
||||
fst st1 ; st : t4, t4, t2
|
||||
fadd st0, st2 ; st : t2+t4, t4, t2
|
||||
fstp qword[ebx+8*8] ; st : t4, t2
|
||||
fsubp st1, st0 ; st : t2-t4
|
||||
fstp qword[ebx+8*12] ; st : <empty>
|
||||
|
||||
; -- even subelements +2, +6, +10 and +14 (2 multiplications needed)
|
||||
fld qword[ebx+8*2]
|
||||
fld qword[ebx+8*6]
|
||||
fld [_r]
|
||||
fmul st1, st0 ; st : r, t2, t1
|
||||
fld qword[ebx+8*10]
|
||||
fxch st1 ; st : r, t3, t2, t1
|
||||
fmul qword[ebx+8*14] ; st : t4, t3, t2, t1
|
||||
; ------
|
||||
fld st3 ; st : t1, t4, t3, t2, t1
|
||||
fadd st0, st3 ;
|
||||
fadd st0, st2 ;
|
||||
fst qword[ebx+8*2] ; store f[i+8] = t1+t2+t3
|
||||
fsub st0, st3 ;
|
||||
fsub st0, st3 ;
|
||||
fstp qword[ebx+8*10] ; store f[i+10]= t1-t2+t3
|
||||
fld st3 ; st : t1, t4, t3, t2, t1
|
||||
fsub st0, st2 ;
|
||||
fsub st0, st1 ;
|
||||
fst qword[ebx+8*14] ; store f[i+14]= t1-t3-t4
|
||||
fadd st0, st1 ;
|
||||
faddp st1, st0 ; st : t1-t3+t4, t3, t2, t1
|
||||
fstp qword[ebx+8*6] ; store f[i+6]
|
||||
fstp st0 ; st : t2, t1
|
||||
fstp st0 ; st : t1
|
||||
fstp st0 ; st : <empty>
|
||||
|
||||
; -- odd subelements
|
||||
fld qword[ebx+8*9]
|
||||
fld qword[ebx+8*11]
|
||||
fld st1
|
||||
fsub st0, st1
|
||||
fxch st1
|
||||
faddp st2, st0 ; st : (f[l3]-f[l7]), (f[l3]+f[l7])
|
||||
fld [_r2]
|
||||
fmul st2, st0
|
||||
fmulp st1, st0 ; st : t9, t6
|
||||
fld qword[ebx+8*3]
|
||||
fld st0
|
||||
fadd st0, st2 ; st : t1, f[l5], t9, t6
|
||||
fstp _t1
|
||||
fsub st0, st1
|
||||
fstp _t2
|
||||
fstp _t9 ; (t9 never used)
|
||||
fstp _t6 ; st : <empty>
|
||||
|
||||
fld [_c1]
|
||||
fld [_s1]
|
||||
fld qword[ebx+8*5]
|
||||
fld qword[ebx+8*7]
|
||||
fld st3 ; st: c1, f[l6], f[l2], s1, c1
|
||||
fmul st0, st2 ; st: f_2*c, f_6, f_2, s, c
|
||||
fld st1 ; st: f_6, f_2*c, f_6, f_2, s, c
|
||||
fmul st0, st4 ; st: f_6*s, f_2*c, f_6, f_2, s, c
|
||||
faddp st1, st0 ; st: t5, f_6, f_2, s, c
|
||||
fstp _t5 ; st: f_6, f_2, s, c
|
||||
fld st3 ; st: c, f_6, f_2, s, c
|
||||
fmul st0, st1
|
||||
fld st3
|
||||
fmul st0, st3 ; st: f_2*s, f_6*c, f_6, f_2, s, c
|
||||
fsubp st1, st0 ; st: t8, f_6, f_2, s, c
|
||||
fstp _t8 ; st: f_6, f_2, s, c
|
||||
fstp st0 ; st: f_2, s, c
|
||||
fstp st0 ; st: s, c
|
||||
|
||||
fld qword[ebx+8*13]
|
||||
fld qword[ebx+8*15]
|
||||
fld st3 ; st: c1, f[l8], f[l4], s1, c1
|
||||
fmul st0, st1
|
||||
fld st3
|
||||
fmul st0, st3 ; st: f_4*s, f_8*c, f_8, f_4, s, c
|
||||
faddp st1, st0 ; st: t7, f_8, f_4, s, c
|
||||
fld _t5 ; st: t5, t7, f_8, f_4, s, c
|
||||
fsub st0, st1 ; st: t4, t7, f_8, f_4, s, c
|
||||
fstp _t4
|
||||
fstp _t7 ; st: f_8, f_4, s, c
|
||||
fld st3 ; st: c, f_8, f_4, s, c
|
||||
fmul st0, st2
|
||||
fld st3
|
||||
fmul st0, st2 ; st: f_8*s, f_4*c, f_8, f_4, s, c
|
||||
fsubp st1, st0 ; st:-t0, f_8, f_4, s, c
|
||||
fchs
|
||||
fld _t8
|
||||
fchs ; st:-t8, t0, f_8, f_4, s, c
|
||||
fsub st0, st1 ; st: t3, t0, f_8, f_4, s, c
|
||||
fstp _t3
|
||||
fstp _t0 ; st: f_8, f_4, s, c
|
||||
fstp st0 ; st: f_4, s, c
|
||||
fstp st0 ; st: s, c
|
||||
fstp st0 ; st: c
|
||||
fstp st0 ; st: <empty>
|
||||
|
||||
fld _t1
|
||||
fld _t4
|
||||
fld st1
|
||||
fsub st0, st1
|
||||
fstp qword[ebx+8*11] ; f[l7] = t1-t4
|
||||
faddp st1, st0
|
||||
fstp qword[ebx+8*3] ; f[l5] = t1+t4
|
||||
fld _t2
|
||||
fld _t3
|
||||
fld st1
|
||||
fsub st0, st1
|
||||
fstp qword[ebx+8*15] ; f[l8]
|
||||
faddp st1, st0
|
||||
fstp qword[ebx+8*7] ; f[l6]
|
||||
|
||||
fld _t6
|
||||
fld qword[ebx+8]
|
||||
fld st1
|
||||
fsub st0, st1
|
||||
fxch st1
|
||||
faddp st2, st0 ; st : t2, t1
|
||||
fld _t8
|
||||
fsub _t0
|
||||
fld _t5
|
||||
fadd _t7 ; st : t4, t3, t2, t1
|
||||
|
||||
fld st3
|
||||
fsub st0, st1
|
||||
fstp qword[ebx+8*9] ; f[l3] = t1-t4
|
||||
fadd st0, st3
|
||||
fstp qword[ebx+8] ; f[l1] = t1+t4
|
||||
fld st1 ; st : t2, t3, t2, t1
|
||||
fsub st0, st1 ; f[l4] = t2-t3
|
||||
fstp qword[ebx+8*13] ; st : t3, t2, t1
|
||||
faddp st1, st0 ; st : t2+t3, t1
|
||||
fstp qword[ebx+8*5] ; f[l2] = t2+t3
|
||||
fstp st0 ; st : <empty>
|
||||
|
||||
add ebx, 16*8
|
||||
cmp ebx, eax
|
||||
jb .loop_i
|
||||
|
||||
mov esp, ebp
|
||||
pop ebp
|
||||
ret
|
||||
|
||||
|
||||
|
||||
|
||||
;=================================================================
|
||||
; cdecl parameters:
|
||||
; -- [ebp+8] = N
|
||||
; -- [ebp+12] = p
|
||||
; -- [ebp+16] = 4k-aligned data array address
|
||||
; -- [ebp+20] = 4k-aligned SinCosTable address
|
||||
; returns:
|
||||
; -- nothing
|
||||
; destroys:
|
||||
; -- all GPRegs
|
||||
; locals:
|
||||
; -- 120 stack-located dwords (_t0 ... _t9, _l0..._step)
|
||||
;; ==========================
|
||||
align 4
|
||||
step3:
|
||||
push ebp
|
||||
mov ebp, esp
|
||||
sub esp, 120
|
||||
; 283 : {
|
||||
|
||||
|
||||
; 293 : for (l=3; l<=p; l++)
|
||||
mov cx, 0x0200
|
||||
.newstep:
|
||||
inc ch
|
||||
cmp ch, byte[ebp+12]
|
||||
jg .done
|
||||
mov _step, cx
|
||||
|
||||
; 294 : {
|
||||
; 295 : d1 = 1 << (l + l - 3);
|
||||
|
||||
mov cl, ch
|
||||
add cl, cl
|
||||
sub cl, 3
|
||||
mov edx, 1
|
||||
shl edx, cl
|
||||
mov _d1, edx
|
||||
|
||||
; 296 : d2 = d1 << 1;
|
||||
shl edx, 1
|
||||
mov _d2, edx
|
||||
mov eax, edx
|
||||
|
||||
; 297 : d3 = d2 << 1;
|
||||
shl edx, 1
|
||||
mov _d3, edx
|
||||
|
||||
; 298 : d4 = d2 + d3;
|
||||
add eax, edx
|
||||
mov _d4, eax
|
||||
|
||||
; 299 : d5 = d3 << 1;
|
||||
shl edx, 1
|
||||
mov _d5, edx
|
||||
shl edx, 3
|
||||
mov _d6, edx ; d6 = d5*8 to simplify index operations
|
||||
|
||||
; 339 : j5 = N / d5; ; moved out of internal loop
|
||||
mov cl, [ebp+12]
|
||||
sub cl, ch
|
||||
add cl, cl
|
||||
mov edx, 1
|
||||
shl edx, cl
|
||||
mov _j5, edx
|
||||
|
||||
; 300 :
|
||||
; 301 : for (j=0; j<N; j+=d5)
|
||||
mov ebx, [ebp+16]
|
||||
mov esi, [ebp+8]
|
||||
shl esi, 3
|
||||
add esi, ebx
|
||||
mov _end_of_array, esi
|
||||
|
||||
.next_j:
|
||||
|
||||
; {
|
||||
; t1 = f[j] + f[j+d2];
|
||||
mov eax, _d2
|
||||
fld qword[ebx]
|
||||
fld qword[ebx+eax*8]
|
||||
fld st1
|
||||
fadd st0, st1
|
||||
fstp _t1
|
||||
|
||||
; t2 = f[j] - f[j+d2];
|
||||
fsubp st1, st0
|
||||
fstp _t2
|
||||
|
||||
; t3 = f[j+d3] + f[j+d4];
|
||||
mov edi, _d3
|
||||
fld qword[ebx+edi*8]
|
||||
mov edx, _d4
|
||||
fld qword[ebx+edx*8]
|
||||
fld st1
|
||||
fsub st0, st1 ; st : t4, f4, f3
|
||||
fxch st1 ; st : f4, t4, f3
|
||||
|
||||
; t4 = f[j+d3] - f[j+d4];
|
||||
faddp st2, st0 ; st : t4, t3
|
||||
|
||||
; f[j+d4] = t2 - t4;
|
||||
; f[j+d3] = t2 + t4;
|
||||
fld _t2
|
||||
fld st0
|
||||
fsub st0, st2 ; st : f4, t2, t4, t3
|
||||
fstp qword[ebx+edx*8] ; st : t2, t4, t3
|
||||
fadd st0, st1 ; st : f3, t4, t3
|
||||
fstp qword[ebx+edi*8] ; st : t4, t3
|
||||
|
||||
; f[j+d2] = t1 - t3;
|
||||
; f[j] = t1 + t3;
|
||||
fld _t1
|
||||
fst st1
|
||||
fsub st0, st2 ; st : f2, t1, t3
|
||||
fstp qword[ebx+eax*8] ; st : t1, t3
|
||||
fadd st0, st1 ; st : f0, t3
|
||||
fstp qword[ebx] ; st : t3
|
||||
fstp st0
|
||||
|
||||
; jj = j + d1; / ??
|
||||
mov edi, _d1
|
||||
shl edi, 3 ; = d1*8
|
||||
mov edx, edi
|
||||
mov eax, edi
|
||||
add eax, eax ; eax = d2*8
|
||||
shl edx, 2 ; = d3*8
|
||||
add edi, ebx ; now [edi] points to f[jj]
|
||||
add edx, edi ; and [edx] points to f[jj+d3]
|
||||
|
||||
; t1 = f[jj];
|
||||
fld qword [edi] ; st : t1
|
||||
; t3 = f[jj+d3];
|
||||
fld qword [edx] ; st : t3, t1
|
||||
|
||||
; t2 = f[jj+d2] * r;
|
||||
fld qword [edi+eax]
|
||||
fld [_r]
|
||||
fmul st1, st0 ; st : r, t2, t3, t1
|
||||
; t4 = f[jj+d4] * r
|
||||
fmul qword [edx+eax] ; st : t4, t2, t3, t1
|
||||
|
||||
; f[jj] = t1 + t2 + t3;
|
||||
fld st3 ; st : t1, t4, t2, t3, t1
|
||||
fadd st0, st3
|
||||
fadd st0, st2
|
||||
fstp qword [edi]
|
||||
|
||||
; f[jj+d2] = t1 - t3 + t4;
|
||||
fld st3
|
||||
fsub st0, st3 ; st : (t1-t3), t4, t2, t3, t1
|
||||
fld st0
|
||||
fadd st0, st2 ; st : f2, (t1-t3), t4, t2, t3, t1
|
||||
fstp qword [edi+eax]
|
||||
; f[jj+d4] = t1 - t3 - t4;
|
||||
fsub st0, st1 ; st : f4, t4, t2, t3, t1
|
||||
fstp qword [edx+eax]
|
||||
|
||||
; f[jj+d3] = t1 - t2 + t3;
|
||||
fstp st0 ; st : t2, t3, t1
|
||||
fsubp st1, st0 ; st : (t3-t2), t1
|
||||
faddp st1, st0 ; st : f3
|
||||
fstp qword [edx]
|
||||
|
||||
; for (k=1; k<d1; k++)
|
||||
xor ecx, ecx ; ecx = k
|
||||
mov _jj, ecx
|
||||
.next_k:
|
||||
inc ecx
|
||||
cmp ecx, _d1
|
||||
jge .done_k
|
||||
; {
|
||||
mov eax, _d2 ; the sector increment
|
||||
; l1 = j + k;
|
||||
mov edx, ecx
|
||||
mov _l1, edx ; [ebx+edx*8] --> f[j+k]
|
||||
; l2 = l1 + d2;
|
||||
add edx, eax
|
||||
mov _l2, edx
|
||||
; l3 = l1 + d3;
|
||||
add edx, eax
|
||||
mov _l3, edx
|
||||
; l4 = l1 + d4;
|
||||
add edx, eax
|
||||
mov _l4, edx
|
||||
|
||||
; l5 = j + d2 - k;
|
||||
mov edx, eax
|
||||
sub edx, ecx
|
||||
mov _l5, edx
|
||||
; l6 = l5 + d2;
|
||||
add edx, eax
|
||||
mov _l6, edx
|
||||
; l7 = l5 + d3;
|
||||
add edx, eax
|
||||
mov _l7, edx
|
||||
; l8 = l5 + d4;
|
||||
add edx, eax
|
||||
mov _l8, edx
|
||||
|
||||
|
||||
; 340 : j5 *= k; // add-substituted multiplication
|
||||
mov eax, _jj
|
||||
add eax, _j5
|
||||
mov _jj, eax
|
||||
|
||||
; c1 = C[jj];
|
||||
; s1 = S[jj];
|
||||
mov edi, [ebp+20]
|
||||
fld qword[edi+eax*8]
|
||||
mov esi, [ebp+8]
|
||||
shl esi, 2
|
||||
add esi, edi
|
||||
fld qword[esi+eax*8] ; st : s1, c1
|
||||
|
||||
; t5 = f[l2] * c1 + f[l6] * s1;
|
||||
; t8 = f[l6] * c1 - f[l2] * s1;
|
||||
mov edx, _l6
|
||||
fld qword[ebx+edx*8]
|
||||
mov edx, _l2
|
||||
fld st0
|
||||
fmul st0, st2
|
||||
fxch st1
|
||||
fmul st0, st3
|
||||
fld qword[ebx+edx*8] ; st : f[l2], f[l6]*c, f[l6]*s, s, c
|
||||
fmul st4, st0
|
||||
fmulp st3, st0 ; st : f[l6]*c, f[l6]*s, f[l2]*s, f[l2]*c
|
||||
fsub st0, st2 ; st : t8, f[l6]*s, f[l2]*s, f[l2]*c
|
||||
fstp _t8
|
||||
faddp st2, st0 ; st : f[l2]*s, t5
|
||||
fstp st0 ; st : t5
|
||||
fstp _t5 ; st : <empty>
|
||||
|
||||
; c2 = C[2*jj];
|
||||
; s2 = S[2*jj];
|
||||
shl eax, 1
|
||||
fld qword[edi+eax*8]
|
||||
fld qword[esi+eax*8] ; st : s2, c2
|
||||
|
||||
; t6 = f[l3] * c2 + f[l7] * s2;
|
||||
; t9 = f[l7] * c2 - f[l3] * s2;
|
||||
mov edx, _l7
|
||||
fld qword[ebx+edx*8]
|
||||
mov edx, _l3
|
||||
fld st0
|
||||
fmul st0, st2
|
||||
fxch st1
|
||||
fmul st0, st3
|
||||
fld qword[ebx+edx*8] ; st : f[l3], f[l7]*c, f[l7]*s, s, c
|
||||
fmul st4, st0
|
||||
fmulp st3, st0 ; st : f[l7]*c, f[l7]*s, f[l3]*s, f[l3]*c
|
||||
fsub st0, st2 ; st : t9, f[l7]*s, f[l3]*s, f[l3]*c
|
||||
fstp _t9
|
||||
faddp st2, st0 ; st : f[l2]*s, t6
|
||||
fstp st0 ; st : t6
|
||||
fstp _t6 ; st : <empty>
|
||||
|
||||
; c3 = C[3*jj];
|
||||
; s3 = S[3*jj];
|
||||
add eax, _jj
|
||||
fld qword[edi+eax*8]
|
||||
fld qword[esi+eax*8] ; st : s3, c3
|
||||
|
||||
; t7 = f[l4] * c3 + f[l8] * s3;
|
||||
; t0 = f[l8] * c3 - f[l4] * s3;
|
||||
mov edx, _l8
|
||||
fld qword[ebx+edx*8]
|
||||
mov edx, _l4
|
||||
fld st0
|
||||
fmul st0, st2
|
||||
fxch st1
|
||||
fmul st0, st3
|
||||
fld qword[ebx+edx*8] ; st : f[l4], f[l8]*c, f[l8]*s, s, c
|
||||
fmul st4, st0
|
||||
fmulp st3, st0 ; st : f[l8]*c, f[l8]*s, f[l4]*s, f[l4]*c
|
||||
fsub st0, st2 ; st : t9, f[l8]*s, f[l4]*s, f[l4]*c
|
||||
fstp _t0
|
||||
faddp st2, st0 ; st : f[l2]*s, t7
|
||||
fstp st0 ; st : t7
|
||||
fstp _t7 ; st : <empty>
|
||||
|
||||
; t1 = f[l5] - t9;
|
||||
; t2 = f[l5] + t9;
|
||||
mov eax, _l5
|
||||
fld qword [ebx+eax*8]
|
||||
fld _t9
|
||||
fld st0
|
||||
fadd st0, st2
|
||||
fstp _t2
|
||||
fsubp st1, st0
|
||||
fstp _t1
|
||||
|
||||
; t3 = - t8 - t0;
|
||||
fld _t8
|
||||
fadd _t0
|
||||
fchs
|
||||
fstp _t3
|
||||
; t4 = t5 - t7;
|
||||
fld _t5
|
||||
fsub _t7
|
||||
fstp _t4
|
||||
|
||||
; f[l5] = t1 + t4;
|
||||
fld _t1
|
||||
fld _t4
|
||||
fld st0
|
||||
fadd st0, st2
|
||||
fstp qword [ebx+eax*8]
|
||||
; f[l7] = t1 - t4;
|
||||
mov eax, _l7
|
||||
fsubp st1, st0
|
||||
fstp qword [ebx+eax*8]
|
||||
|
||||
; f[l6] = t2 + t3;
|
||||
mov eax, _l6
|
||||
fld _t2
|
||||
fld _t3
|
||||
fld st0
|
||||
fadd st0, st2
|
||||
fstp qword [ebx+eax*8]
|
||||
; f[l8] = t2 - t3;
|
||||
mov eax, _l8
|
||||
fsubp st1, st0
|
||||
fstp qword [ebx+eax*8]
|
||||
|
||||
; t1 = f[l1] + t6;
|
||||
mov eax, _l1
|
||||
fld qword [ebx+eax*8]
|
||||
fld _t6
|
||||
fld st0
|
||||
fadd st0, st2
|
||||
fstp _t1
|
||||
; t2 = f[l1] - t6;
|
||||
fsubp st1, st0
|
||||
fstp _t2
|
||||
|
||||
; t3 = t8 - t0;
|
||||
fld _t8
|
||||
fsub _t0
|
||||
fstp _t3
|
||||
; t4 = t5 + t7;
|
||||
fld _t5
|
||||
fadd _t7
|
||||
fstp _t4
|
||||
|
||||
; f[l1] = t1 + t4;
|
||||
mov eax, _l1
|
||||
fld _t1
|
||||
fld _t4
|
||||
fld st0
|
||||
fadd st0, st2
|
||||
fstp qword [ebx+eax*8]
|
||||
; f[l3] = t1 - t4;
|
||||
mov eax, _l3
|
||||
fsubp st1, st0
|
||||
fstp qword [ebx+eax*8]
|
||||
|
||||
; f[l2] = t2 + t3;
|
||||
mov eax, _l2
|
||||
fld _t2
|
||||
fld _t3
|
||||
fld st0
|
||||
fadd st0, st2
|
||||
fstp qword [ebx+eax*8]
|
||||
; f[l4] = t2 - t3;
|
||||
mov eax, _l4
|
||||
fsubp st1, st0
|
||||
fstp qword [ebx+eax*8]
|
||||
|
||||
; 374 : }
|
||||
jmp .next_k
|
||||
|
||||
.done_k:
|
||||
; 375 : }
|
||||
add ebx, _d6 ; d6 = d5*8
|
||||
cmp ebx, _end_of_array
|
||||
jb .next_j
|
||||
|
||||
; 376 : }
|
||||
mov cx, _step
|
||||
jmp .newstep
|
||||
.done:
|
||||
mov esp, ebp
|
||||
pop ebp
|
||||
; 377 : }
|
||||
ret
|
||||
|
||||
|
||||
;=========== Step3 ends here ===========
|
||||
|
||||
|
||||
; =================================================================
|
||||
|
||||
;=================================================================
|
||||
; parameters:
|
||||
; -- [ebp+8] = N
|
||||
; -- [ebp+12] = p
|
||||
; -- [ebp+16] = 4k-aligned data array address
|
||||
; -- [ebp+20] = 4k-aligned SinCosTable address
|
||||
; returns:
|
||||
; -- nothing
|
||||
; destroys:
|
||||
; -- all GPRegs
|
||||
;; ==========================
|
||||
|
||||
align 4
|
||||
|
||||
FHT_4:
|
||||
|
||||
push ebp
|
||||
mov ebp, esp
|
||||
mov edx, [ebp+16]
|
||||
add edx, [ebp+12]
|
||||
call BitInvert
|
||||
push dword[ebp+16]
|
||||
push dword[ebp+8]
|
||||
call step1
|
||||
call step2
|
||||
pop edx ; N
|
||||
pop ecx ; a
|
||||
push dword[ebp+20] ; t
|
||||
push ecx
|
||||
push dword[ebp+12] ; p
|
||||
push edx ; N
|
||||
call step3
|
||||
mov esp, ebp
|
||||
pop ebp
|
||||
|
||||
ret
|
||||
@ -69,7 +69,7 @@ include '../../../develop/libraries/box_lib/load_lib.mac'
|
||||
|
||||
@use_library
|
||||
|
||||
;include 'debug.inc'
|
||||
;include '../../debug.inc'
|
||||
|
||||
if ~ RENDER eq PIX
|
||||
TOP=TOP+4
|
||||
|
||||
Loading…
Reference in New Issue
Block a user