forked from KolibriOS/kolibrios
136 lines
2.4 KiB
NASM
136 lines
2.4 KiB
NASM
;; CPU latency test -- Art J ;;
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use32 ;
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org 0x0 ;
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db 'MENUET01' ;
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dd 0x01 ;
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dd START ;
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dd I_END ;
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dd 0x4000 ;
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dd 0x4000 ;
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dd 0x0 ;
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dd 0x0 ;
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include '..\..\..\macros.inc' ;
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START:
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call draw_win
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rdtsc
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main_loop:
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mov ecx, eax ; ecx = previous timestamp
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rdtsc ; new timestamp
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cmp eax, ecx
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jb main_loop ; tsc overflow?
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mov ebx, eax ;
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sub ebx, ecx ; net clocks
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cmp ebx, [max]
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jb @f
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mov [max], ebx
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; mcall 13, 200*65536+60, 500*65536+20, 0x00EEEEEEEE
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; mcall 47, 0x800A0001, max, 200*65536+501
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@@:
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push ebx
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fldlg2 ; lg(2)
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fild dword[esp]
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fyl2x
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fimul [yscale]
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fistp dword[esp]
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pop ebx ; ebx = lg(time/100) * yscale
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sub ebx, [yscale]
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sub ebx, [yscale]
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jb main_loop
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cmp ebx, 512
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ja main_loop
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mov edx, [ebx*4+data_]
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inc edx
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mov [ebx*4+data_], edx
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push edx
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fld qword[xscale]
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fild dword[esp]
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fyl2x
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fistp dword[esp]
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pop edx ; edx = log2(counts) * xscale
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cmp edx, 300
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jge main_loop
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shl ebx, 12 ; 1 line = 1024 pixels
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add ebx, 1024*4*30 + 17*4
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mov dword[ebx + edx*4 + 0xFE000000], 0x00703030
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jmp main_loop
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;------------------------------------------------
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draw_win:
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;------------------------------------------------
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mcall 12, 1
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mcall 0, 300, 590, 0x14BAA6A0,,title
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; -----------------------------------------------------------------
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mov ecx, [yscale]
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shl ecx, 16
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mov cx, word[yscale]
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mov [ytick], ecx
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mcall 38, 16*65536+16, 30*65536+530, 0
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mov cx, 30
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@@:
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mcall , 14*65536+16
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add ecx, [ytick]
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cmp cx, 512
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jb @b
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mcall 4, 0x00100230, 0x80000000, advise
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mov eax, 47
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mov ebx, 0x00010000
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mov ecx, 2
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mov edx, 7*65536+30
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mov esi, 0
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@@:
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mcall
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add dx, word[yscale]
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inc ecx
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cmp dx, 512
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jb @b
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mcall 40, 0xC0000000 ; ignore sys messages
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mcall 12, 2
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ret
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align 4
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;-------------------------------------------------
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data_ dd 512 dup 1 ; hysto
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max dd 0
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xscale dq 7.2
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yscale dd 80
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ytick dd 0
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title db ' Latency test ',0
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advise db 'Use CPU process manager to close this window)',0
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I_END: ; end of program
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rd 256
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align 256
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st_0:
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