1/*
2 * Copyright (c) 2003-2009 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#if defined (__x86_64__)
42	FRAME
43
44	/* Increment 32-bit commpage field if present */
45	movq	_commPagePtr32(%rip),%rdx
46	testq	%rdx,%rdx
47	je	1f
48	subq	$(ASM_COMM_PAGE32_BASE_ADDRESS),%rdx
49	lock
50	incl	ASM_COMM_PAGE_SCHED_GEN(%rdx)
51
52	/* Increment 64-bit commpage field if present */
53	movq	_commPagePtr64(%rip),%rdx
54	testq	%rdx,%rdx
55	je	1f
56	subq	$(ASM_COMM_PAGE32_START_ADDRESS),%rdx
57	lock
58	incl	ASM_COMM_PAGE_SCHED_GEN(%rdx)
591:
60	EMARF
61	ret
62#elif defined (__i386__)
63	FRAME
64
65	/* Increment 32-bit commpage field if present */
66	mov	_commPagePtr32,%edx
67	testl	%edx,%edx
68	je	1f
69	sub	$(ASM_COMM_PAGE32_BASE_ADDRESS),%edx
70	lock
71	incl	ASM_COMM_PAGE_SCHED_GEN(%edx)
72
73	/* Increment 64-bit commpage field if present */
74	mov	_commPagePtr64,%edx
75	testl	%edx,%edx
76	je	1f
77	sub	$(ASM_COMM_PAGE32_START_ADDRESS),%edx
78	lock
79	incl	ASM_COMM_PAGE_SCHED_GEN(%edx)
801:
81	EMARF
82	ret
83#else
84#error unsupported architecture
85#endif
86
87/* pointers to the 32-bit commpage routine descriptors */
88/* WARNING: these must be sorted by commpage address! */
89	.const_data
90	.align	3
91	.globl	_commpage_32_routines
92_commpage_32_routines:
93	COMMPAGE_DESCRIPTOR_REFERENCE(preempt)
94	COMMPAGE_DESCRIPTOR_REFERENCE(backoff)
95	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue)
96	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue)
97	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_mutex_lock)
98#if defined (__i386__)
99	.long	0
100#elif defined (__x86_64__)
101	.quad	0
102#else
103#error unsupported architecture
104#endif
105
106
107/* pointers to the 64-bit commpage routine descriptors */
108/* WARNING: these must be sorted by commpage address! */
109	.const_data
110	.align	3
111	.globl	_commpage_64_routines
112_commpage_64_routines:
113	COMMPAGE_DESCRIPTOR_REFERENCE(preempt_64)
114	COMMPAGE_DESCRIPTOR_REFERENCE(backoff_64)
115	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue_64)
116	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue_64)
117	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_mutex_lock_64)
118#if defined (__i386__)
119	.long	0
120#elif defined (__x86_64__)
121	.quad	0
122#else
123#error unsupported architecture
124#endif
125
126