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/* This is file CLOCK.S */
/*
** Copyright (C) 1993 DJ Delorie
**
** This file is distributed under the terms listed in the document
** "copying.dj".
** 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