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/* This is file CLOCK.S */

/*

** Copyright (C) 1993 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954

**

** This file is distributed under the terms listed in the document

** "copying.dj", available from DJ Delorie at the address above.

** A copy of "copying.dj" should accompany this file; if not, a copy

** should be available from where this file was obtained.  This file

** may not be distributed without a verbatim copy of "copying.dj".

**

** This file is distributed WITHOUT ANY WARRANTY; without even the implied

** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

**

** Modified by C. Sandmann for DPMI support (sandmann@clio.rice.edu)

*/

        .data

clock_init:

        .long   0

        .text

        .globl _clock

_clock:

        call    _rawclock

        imull   $54931,%eax,%eax

        ret

        .align  4,0x90

        .globl  _rawclock

_rawclock:

        movzwl  __core_select,%eax

        testl   %eax,%eax

        je      old_clock       /* Image run with pre-DPMI extender */

        movw    %ax,%gs

        movl    %gs:0x46c(,1),%eax

        jmp     check_initted

old_clock:

        movl    0xe000046c,%eax

check_initted:

        cmp     $0,clock_init

        jne     clock_initted

        movl    %eax,clock_init

clock_initted:

        subl    clock_init,%eax

        ret