| 1 | ;; THIS SOFTWARE IS SUBJECT TO COPYRIGHT PROTECTION AND IS OFFERED ONLY
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| 2 | ;; PURSUANT TO THE 3DFX GLIDE GENERAL PUBLIC LICENSE. THERE IS NO RIGHT
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| 3 | ;; TO USE THE GLIDE TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF 3DFX
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| 4 | ;; INTERACTIVE, INC. A COPY OF THIS LICENSE MAY BE OBTAINED FROM THE
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| 5 | ;; DISTRIBUTOR OR BY CONTACTING 3DFX INTERACTIVE INC(info@3dfx.com).
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| 6 | ;; THIS PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
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| 7 | ;; EXPRESSED OR IMPLIED. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A
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| 8 | ;; FULL TEXT OF THE NON-WARRANTY PROVISIONS.
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| 9 | ;;
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| 10 | ;; USE, DUPLICATION OR DISCLOSURE BY THE GOVERNMENT IS SUBJECT TO
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| 11 | ;; RESTRICTIONS AS SET FORTH IN SUBDIVISION (C)(1)(II) OF THE RIGHTS IN
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| 12 | ;; TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 252.227-7013,
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| 13 | ;; AND/OR IN SIMILAR OR SUCCESSOR CLAUSES IN THE FAR, DOD OR NASA FAR
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| 14 | ;; SUPPLEMENT. UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF
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| 15 | ;; THE UNITED STATES.
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| 16 | ;;
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| 17 | ;; COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
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| 18 |
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| 19 | ;;
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| 20 | ;; Assembly Function for reading the Time Stamp Counter
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| 21 | ;;
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| 22 | TITLE utsc.asm
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| 23 | .586P
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| 24 | ;include listing.inc
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| 25 | if @Version gt 510
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| 26 | .model FLAT, C
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| 27 | else
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| 28 | _TEXT SEGMENT PARA USE32 PUBLIC 'CODE'
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| 29 | _TEXT ENDS
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| 30 | _DATA SEGMENT DWORD USE32 PUBLIC 'DATA'
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| 31 | _DATA ENDS
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| 32 | CONST SEGMENT DWORD USE32 PUBLIC 'CONST'
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| 33 | CONST ENDS
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| 34 | _BSS SEGMENT DWORD USE32 PUBLIC 'BSS'
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| 35 | _BSS ENDS
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| 36 | _TLS SEGMENT DWORD USE32 PUBLIC 'TLS'
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| 37 | _TLS ENDS
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| 38 | FLAT GROUP _DATA, CONST, _BSS
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| 39 | ASSUME CS: FLAT, DS: FLAT, SS: FLAT
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| 40 | endif
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| 41 |
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| 42 | ; some useful floating load and store macros <ala gmt>
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| 43 | flds TEXTEQU <fld DWORD PTR>
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| 44 | fsubs TEXTEQU <fsub DWORD PTR>
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| 45 | fmuls TEXTEQU <fmul DWORD PTR>
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| 46 | fstsp TEXTEQU <fstp DWORD PTR>
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| 47 |
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| 48 | _DATA SEGMENT
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| 49 | One DD 03f800000r
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| 50 | Dummy DD ?
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| 51 | _DATA ENDS
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| 52 |
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| 53 | _TEXT SEGMENT
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| 54 |
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| 55 | ;; Fxu32 tscReadTSC( void )
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| 56 | ;; Reads the pentium time stamp counter and returns
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| 57 | ;; the low 32bits
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| 58 |
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| 59 | align 4
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| 60 | PUBLIC tscReadTSC
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| 61 | tscReadTSC PROC NEAR
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| 62 |
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| 63 | .586
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| 64 | rdtsc ; Read the time stamp counter
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| 65 |
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| 66 | ret
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| 67 | tscReadTSC ENDP
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| 68 |
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| 69 | _TEXT ENDS
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| 70 | END
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