1/*
2 * Copyright (c) 2003-2012 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#include <machine/cpu_capabilities.h>
30#include <machine/commpage.h>
31#include <machine/asm.h>
32#include <assym.s>
33
34/*
35 * extern void	commpage_sched_gen_inc(void);
36 */
37	.text
38
39	.globl	_commpage_sched_gen_inc
40_commpage_sched_gen_inc:
41	FRAME
42
43	/* Increment 32-bit commpage field if present */
44	movq	_commPagePtr32(%rip),%rdx
45	testq	%rdx,%rdx
46	je	1f
47	subq	$(ASM_COMM_PAGE32_BASE_ADDRESS),%rdx
48	lock
49	incl	ASM_COMM_PAGE_SCHED_GEN(%rdx)
50
51	/* Increment 64-bit commpage field if present */
52	movq	_commPagePtr64(%rip),%rdx
53	testq	%rdx,%rdx
54	je	1f
55	subq	$(ASM_COMM_PAGE32_START_ADDRESS),%rdx
56	lock
57	incl	ASM_COMM_PAGE_SCHED_GEN(%rdx)
581:
59	EMARF
60	ret
61
62/* pointers to the 32-bit commpage routine descriptors */
63/* WARNING: these must be sorted by commpage address! */
64	.const_data
65	.align	3
66	.globl	_commpage_32_routines
67_commpage_32_routines:
68	COMMPAGE_DESCRIPTOR_REFERENCE(preempt)
69	COMMPAGE_DESCRIPTOR_REFERENCE(backoff)
70	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue)
71	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue)
72	.quad	0
73
74
75/* pointers to the 64-bit commpage routine descriptors */
76/* WARNING: these must be sorted by commpage address! */
77	.const_data
78	.align	3
79	.globl	_commpage_64_routines
80_commpage_64_routines:
81	COMMPAGE_DESCRIPTOR_REFERENCE(preempt_64)
82	COMMPAGE_DESCRIPTOR_REFERENCE(backoff_64)
83	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue_64)
84	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue_64)
85	.quad	0
86
87