X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/060df5ea7c632b1ac8cc8aac1fb59758165c2084..6d2010ae8f7a6078e10b361c6962983bab233e0f:/osfmk/i386/rtclock.h

diff --git a/osfmk/i386/rtclock.h b/osfmk/i386/rtclock.h
deleted file mode 100644
index d98b8808f..000000000
--- a/osfmk/i386/rtclock.h
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Copyright (c) 2004-2010 Apple Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- * 
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- * 
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-/*
- * @OSF_COPYRIGHT@
- */
-/*
- * @APPLE_FREE_COPYRIGHT@
- */
-/*
- *	File:		rtclock.h
- *	Purpose:	Routines for handling the machine dependent
- *				real-time clock.
- */
-
-#ifndef _I386_RTCLOCK_H_
-#define _I386_RTCLOCK_H_
-
-#ifndef ASSEMBLER
-typedef struct rtc_nanotime {
-	volatile uint64_t	tsc_base;	/* timestamp */
-	volatile uint64_t	ns_base;	/* nanoseconds */
-	uint32_t		scale;		/* tsc -> nanosec multiplier */
-	uint32_t		shift;		/* tsc -> nanosec shift/div */
-						/* shift is overloaded with
-						 * lower 32bits of tsc_freq
-						 * on slower machines (SLOW_TSC_THRESHOLD) */
-	volatile uint32_t	generation;	/* 0 == being updated */
-	uint32_t		spare1;
-} rtc_nanotime_t;
-
-#if 0
-#include <kern/etimer.h>
-#endif
-
-struct cpu_data;
-
-extern uint64_t tsc_rebase_abs_time;
-
-extern void	_rtc_nanotime_store(
-			uint64_t	tsc,
-			uint64_t	nsec,
-			uint32_t	scale,
-			uint32_t	shift,
-			rtc_nanotime_t	*dst);
-
-extern void	_rtc_nanotime_adjust(
-			uint64_t	tsc_base_delta,
-			rtc_nanotime_t	*dst);
-
-extern uint64_t	_rtc_nanotime_read(
-			rtc_nanotime_t	*rntp,
-			int		slow);
-
-extern rtc_nanotime_t rtc_nanotime_info;
-#endif
-
-#define	SLOW_TSC_THRESHOLD	1000067800	/* TSC is too slow for regular nanotime() algorithm */
-
-#if defined(__i386__)
-/*
- * Assembly snippet included in exception handlers and rtc_nanotime_read()
- * %edi points to nanotime info struct
- * %edx:%eax returns nanotime
- */
-#define RTC_NANOTIME_READ_FAST()					  \
-0:	movl	RNT_GENERATION(%edi),%esi	/* being updated? */	; \
-	testl	%esi,%esi						; \
-	jz	0b				/* wait until done */	; \
-	lfence								; \
-	rdtsc								; \
-	lfence								; \
-	subl	RNT_TSC_BASE(%edi),%eax					; \
-	sbbl	RNT_TSC_BASE+4(%edi),%edx	/* tsc - tsc_base */	; \
-	movl	RNT_SCALE(%edi),%ecx		/* * scale factor */	; \
-	movl	%edx,%ebx						; \
-	mull	%ecx							; \
-	movl	%ebx,%eax						; \
-	movl	%edx,%ebx						; \
-	mull	%ecx							; \
-	addl	%ebx,%eax						; \
-	adcl	$0,%edx							; \
-	addl	RNT_NS_BASE(%edi),%eax		/* + ns_base */		; \
-	adcl	RNT_NS_BASE+4(%edi),%edx				; \
-	cmpl	RNT_GENERATION(%edi),%esi	/* check for update */	; \
-	jne	0b				/* do it all again */
-
-#elif defined(__x86_64__)
-
-/*
- * Assembly snippet included in exception handlers and rtc_nanotime_read()
- * %rdi points to nanotime info struct.
- * %rax returns nanotime
- */
-#define RTC_NANOTIME_READ_FAST()					  \
-0:	movl	RNT_GENERATION(%rdi),%esi				; \
-	test	%esi,%esi			/* info updating? */	; \
-	jz	0b				/* - wait if so */	; \
-	lfence								; \
-	rdtsc								; \
-	lfence								; \
-	shlq	$32,%rdx						; \
-	orq	%rdx,%rax			/* %rax := tsc */	; \
-	subq	RNT_TSC_BASE(%rdi),%rax		/* tsc - tsc_base */	; \
-	xorq	%rcx,%rcx						; \
-	movl	RNT_SCALE(%rdi),%ecx					; \
-	mulq	%rcx				/* delta * scale */	; \
-	shrdq	$32,%rdx,%rax			/* %rdx:%rax >>= 32 */	; \
-	addq	RNT_NS_BASE(%rdi),%rax		/* add ns_base */	; \
-	cmpl	RNT_GENERATION(%rdi),%esi	/* repeat if changed */ ; \
-	jne	0b
-
-#endif
-
-#endif /* _I386_RTCLOCK_H_ */