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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
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